JP2021019117A - Moving tool of spherical magnetic component - Google Patents

Abstract

To provide a tool which attracts only one spherical magnetic component with magnetic force and remove the attracted component with simple operation.SOLUTION: A moving tool 10 of a spherical magnetic component includes: a hollow columnar body part 11 having a front end part 32 and a rear end part 24; a movable shaft part 40 which is inserted into the body part 11 and may move in an axis C1 direction of the body part 11; a permanent magnet 60 held by a front end part 32 side end part of the movable shaft part 40; and an elastic member 70 which applies biasing force for moving the movable shaft part 40 rearward to the movable shaft part 40. A diameter φ7 of an edge part 39 of a hole 37 formed at the front end part 32 is smaller than a diameter φ10 of a spherical component 100. The moving tool 10 is configured so that the permanent magnet 60 and the spherical component 100 do not contact with each other when the spherical component 100 is placed in contact with the edge part 39 of the hole 37 and the movable shaft part 40 is moved to a second position where control force is applied by the outside.SELECTED DRAWING: Figure 1

Description

The present invention relates to a moving device used for moving a spherical component (spherical magnetic component) having magnetism and having a first diameter.

Conventionally, there have been known instruments that attract and collect scattered iron pieces such as needles and nails by using the magnetic force of a permanent magnet in order to collect them and move them to another place. One of such instruments (hereinafter referred to as "conventional instrument") is a non-magnetic pipe having a bottom, a push rod inserted into the pipe, and a permanent fixed to one end of the push rod. It includes a magnet and a push spring. When the operator presses the other end of the push rod, the push spring is compressed and the permanent magnet comes into contact with the inside of the bottom. As a result, the iron pieces are attracted to the outside of the bottom by the magnetic force of the permanent magnet. In this state, when the operator releases the push rod, the permanent magnet is separated from the inside of the bottom by the restoring force of the push spring. As a result, the adsorbed iron pieces are released from the bottom (see, for example, Patent Document 1).

Jikkai Sho 53-152070

By the way, iron balls (hereinafter, referred to as "steel balls") are often used for mechanical switches that switch contacts by mechanically moving an operator. When assembling such a switch, the operator takes out one steel ball from a large number of steel balls contained in the container and places the taken-out steel ball in a predetermined position in the switch. There is a need to do.

Since the diameter of the steel ball is, for example, 4 to 8 mm, tweezers are used for the above work. However, when tweezers are used, the time required for the above work varies greatly depending on the skill level of the operator. Further, when tweezers are used, it is easy for the operator to drop the steel ball while moving it. On the other hand, when the above-mentioned work is performed using the above-mentioned conventional equipment, a large number of steel balls are adsorbed on the bottom when the steel balls are taken out from the container, so that the above-mentioned work cannot be substantially performed. Furthermore, the conventional instruments described above are not suitable for the operator to grasp and operate with one hand.

The present invention has been made to address the above problems. That is, one of the objects of the present invention is that only one of the "spherical and magnetic parts" such as a steel ball is adsorbed by a simple operation with one hand of the operator by using a magnetic force. The purpose of the present invention is to provide a "moving device for spherical magnetic parts" capable of separating (releasing) the parts.

The "tool for moving spherical magnetic parts (hereinafter, also referred to as" the device of the present invention ") (10)" of the present invention for achieving the above object is magnetic and has a first diameter (φ10). An instrument that can be grasped and operated by an operator with one hand to move the spherical part (100).
A hollow columnar main body (11 (20, 30)) having a front end and a rear end,
A rod-shaped movable shaft portion (40, 50, 80, 90) that is inserted into the main body portion and can move with respect to the main body portion in the axial (C1) direction of the main body portion.
A permanent magnet (60) that is held at the end of the movable shaft portion on the front end side and can move in the axial direction integrally with the movable shaft portion.
An elastic member (70) that applies an urging force to the movable shaft portion to move the movable shaft portion from the front end portion to the rear end portion with respect to the main body portion.
To be equipped.

The movable shaft portion "counters the urging force" for moving the movable shaft portion in the direction from the rear end portion toward the front end portion (direction from the front side, the rear end portion side to the front end portion side). The "operating force" can be input from the outside of the main body.

The main body portion and the movable shaft portion include a first regulating portion (22, 41) and a second regulating portion (24, 95).
The first regulating unit regulates the movable shaft portion so that it does not move toward the rear end portion side from the first position due to the urging force when the operating force is not applied to the movable shaft portion.
The second regulating unit regulates the movable shaft portion so as not to move toward the front end portion side from the second position when the operating force is applied to the movable shaft portion. The second position is a position on the front end side with respect to the first position.

A hole (37) is formed in the front end portion of the main body portion, and the diameter (φ7) of a circle inscribed in the edge portion (39) at the front end portion of the formed hole is the first diameter (φ10). ) Is formed to be smaller than.

When the spherical component is brought into contact with the edge of the hole and the movable shaft portion is moved to the second position, the second regulating portion hits the permanent magnet and the spherical component with each other. It is designed not to touch.

According to this configuration, when the operating force is not applied to the movable shaft portion, the movable shaft portion is positioned at the first position by the urging force of the elastic member. On the other hand, when an operating force larger than the urging force of the elastic member is applied to the movable shaft portion, the movable shaft portion moves to the second position. Therefore, the distance between the permanent magnet and the front end portion of the main body portion is relatively long when the movable shaft portion is in the first position, and relatively short when the movable shaft portion is in the second position. On the other hand, since the diameter of the spherical component to be moved (that is, the first diameter) is larger than the diameter of the hole formed at the front end of the main body, only one spherical component hits the edge of the hole. Get in touch.

Therefore, for example, if the operator presses the front end portion against one spherical component while grasping the main body portion and does not input the operating force to the movable shaft portion, the operator can press the front end portion against one spherical component, and the one spherical component from among many spherical components. Can be easily set at a predetermined position on the front end (that is, the edge of the hole). At this time, since the movable shaft portion is in the first position, the distance between the permanent magnet and the set spherical component is long. Therefore, the spherical part is not attracted (held) to the main body.

In this state, when the movable shaft portion moves to the second position by applying an operating force to the movable shaft portion, the distance between the permanent magnet and the set spherical part becomes short, so that the spherical part is relative to the main body portion. It is adsorbed (held). Therefore, for example, the operator applies an operating force to the movable shaft portion to move the movable shaft portion to the second position in a state where the spherical component is in contact with the edge of the hole formed at the front end portion, thereby moving the main body. Spherical parts can be adsorbed on the portion. Then, the operator maintains this state, moves the spherical part together with the instrument of the present invention to a predetermined place, and then stops (releases) the input of the operating force to the movable shaft portion. As a result, the movable shaft portion returns from the second position to the first position due to the urging force of the elastic member, so that the distance between the permanent magnet and the spherical component becomes long, and as a result, the spherical component is separated from the main body.

Further, in the instrument of the present invention, when the movable shaft portion moves to the second position, the spherical component in contact with the edge portion of the hole does not abut (do not directly contact) the permanent magnet. Therefore, since the permanent magnets and the spherical parts do not abut against each other, the possibility of damage to them can be reduced. Moreover, in the instrument of the present invention, even when a sticky substance such as grease adheres to the spherical part, the sticky substance does not easily adhere to the permanent magnet, so that a large amount of the adhesive substance adheres to the permanent magnet after long-term use. It is also possible to reduce the possibility that the sticky substance will hinder the movement of the permanent magnet.

As described above, the instrument of the present invention can make the work of taking out only one of the spherical parts from one place (for example, a container) and moving it to another place extremely easy work.

In the instrument of the present invention, the permanent magnet is selected to meet the following two requirements (1) and (2).
(1) When the spherical component is brought into contact with the edge portion of the hole and the movable shaft portion is in the first position, the spherical component is lifted upward while being in contact with the edge portion. I can't.
(2) When the spherical component is brought into contact with the edge portion of the hole and the movable shaft portion is in the second position, the spherical component is lifted upward while being in contact with the edge portion. Can be done.

One aspect of the instrument of the present invention includes a position adjusting mechanism (40, 43, 50, 80, 83) capable of adjusting the axial position of the permanent magnet with respect to the movable shaft portion.

There are many types of spherical parts in diameter, weight and material. For example, the larger the diameter of the spherical part, the smaller the curvature. Therefore, when the spherical part comes into contact with the edge portion, the shortest distance between the surface of the spherical part and the permanent magnet becomes longer as the diameter of the spherical part increases. Further, the larger the diameter of the spherical component, the heavier the weight tends to be. Further, the degree of magnetization by the permanent magnet differs depending on the material. From the above, the larger the diameter of the spherical part, the heavier the weight of the spherical part, and / or the more difficult the material to be magnetized, the more the permanent magnet and the front end portion when the movable shaft portion moves to the second position. It is desirable to reduce the distance from and (that is, to increase the magnetic force acting on the spherical part). Since the above aspect can easily meet the demand, it is possible to make an instrument having one type of permanent magnet compatible with many types of spherical parts.

In one aspect of the instrument of the invention
The main body portion has a predetermined wall thickness (D1) in a section from a predetermined position (33) on the rear end portion side of the front end portion to the front end portion, and gradually reduces in diameter toward the front end portion. It has a hollow cone-shaped tip (34). Further, the hole (37) is a through hole that penetrates the front end portion (that is, the front end portion of the main body portion) of the tip portion (34). In addition, a plurality of notches (38) extending from the front end portion to the rear end portion side are formed in the tip portion.

The tip portion of this embodiment has a predetermined wall thickness. Therefore, for example, when the front end is brought into contact with one specific spherical part among a large number of spherical parts housed in the container, the specific spherical part and the spherical part adjacent to the specific spherical part The tip cuts in between. Therefore, these spherical parts can be separated from each other. As a result, after the movable shaft portion moves to the second position and the specific spherical part is attracted, when the moving device according to this embodiment is lifted upward by the operator, the spherical part adjacent to the specific spherical part It is difficult for parts to be in a stringed state due to magnetic force. Therefore, there is a high possibility that only a specific spherical part is lifted, so that the work efficiency can be further improved.

Further, according to this aspect, the shape of the edge portion at the front end portion of the hole is circular. Therefore, when the spherical component is brought into contact with the front end portion, the spherical component is brought into contact with the entire edge portion. On the other hand, as described above, adhesive substances such as grease may adhere to the spherical parts. In this case, the sticky substance may leave the spherical part stuck to the edge.

Therefore, in the above aspect, a plurality of notches are formed at the tip portion. Therefore, the region where the spherical component and the edge contact with each other can be reduced. As a result, the force with which the spherical component adheres to the edge portion is reduced by the adhesive, so that the possibility that the spherical component will not come off when the movable shaft portion is returned to the first position can be reduced.

In one aspect of the instrument of the present invention, the main body portion includes a barrel main body (20) including the rear end portion and a tip member (30) including the tip portion, and the barrel main body is the tip member. Is held detachably.

According to this aspect, a plurality of types of tip members having different hole sizes and shapes according to the type (for example, diameter) of the spherical part are prepared in advance, and the “type of spherical part to be moved” is selected from these. It is possible to select a tip member according to the above and attach the selected tip member to the barrel body. As a result, since it is not necessary to prepare the entire device of the present invention for each of a plurality of types of spherical parts, it is possible to easily provide a device suitable for the spherical parts to be moved.

In one aspect of the instrument of the present invention, the movable shaft portion holds the permanent magnet detachably.

According to this aspect, a plurality of types of permanent magnets capable of generating a magnetic force suitable for the diameter, weight and material of the spherical part are prepared in advance, and among these, permanent magnets corresponding to the "type of spherical part to be moved" are prepared. Can be selected and the selected permanent magnet can be attached to the movable shaft portion. As a result, since it is not necessary to prepare the entire device of the present invention for each of a plurality of types of spherical parts, it is possible to easily provide a device suitable for the spherical parts to be moved.

In the above description, in order to help the understanding of the present invention, the names and / or symbols used in the embodiments are added in parentheses to the configurations of the invention corresponding to the embodiments described later. However, each component of the present invention is not limited to the embodiment defined by the above name and / or reference numeral. Furthermore, the numerical values indicating various dimensions and weights disclosed in the present specification are merely examples, and the moving device for spherical magnetic parts of the present invention is not limited by these numerical values.

FIG. 1 is a cross-sectional view of a moving device for spherical magnetic parts according to an embodiment of the present invention. 2A and 2B are views for explaining the shape of the tip member shown in FIG. 1, FIG. 2A is a perspective view, and FIG. 2B is a view of a front end portion viewed from the front. FIG. 3 is an enlarged cross-sectional view of the front portion of the moving device for the spherical magnetic component shown in FIG. FIG. 4 is a perspective view when the cap shown in FIG. 1 is removed from the barrel main body. FIG. 5 is a cross-sectional view of the spherical magnetic component shown in FIG. 1 when the cap of the moving device is pressed. FIG. 6 is a diagram showing a part of a process of placing the spherical component on the product, and particularly shows a process of adsorbing the spherical component. FIG. 7 is an enlarged cross-sectional view of the spherical magnetic component shown in FIG. 1 when the spherical component is brought into contact with the front end of the moving device. FIG. 8 is a diagram showing a part of a process of placing the spherical component on the product, and particularly shows a process of releasing (releasing) the spherical component. FIG. 9 is a cross-sectional view of the moving instrument for the spherical magnetic component shown in FIG. 1 when the adjusting screw is in the rearmost retracted position for adjustment. FIG. 10 is a cross-sectional view of the moving instrument for the spherical magnetic component shown in FIG. 1 when the adjusting screw is in the adjustment last retracted position and the cap is pressed. 11A and 11B are views for explaining the shape of the tip member of the moving device for moving the spherical magnetic part according to one of the modified examples, FIG. 11A is a perspective view, and FIG. 11B is a front end of the tip member viewed from the front. It is a figure of a part. FIG. 12 is a diagram for explaining the shape of the front end portion of the tip member of the moving device for moving the spherical magnetic part according to one of the modified examples, and FIG. 12 (A) is a front view when the front end portion has a square shape. A visual view, (B) is a front view when the front end is square. FIG. 13 is a cross-sectional view of a moving device for spherical magnetic parts according to one of the modified examples. FIG. 14 is a cross-sectional view of a moving device for spherical magnetic parts according to one of the modified examples. FIG. 15 is an enlarged cross-sectional view of a moving device for spherical magnetic parts according to one of the modified examples.

(Constitution)
Hereinafter, a device for moving spherical magnetic parts (hereinafter, also referred to as “the device”) according to the embodiment of the present invention will be described. The instrument 10 takes out only one magnetic (that is, magnetized in a magnetic field) spherical component from a container in which a large number of the spherical components are accumulated, and places the component in another place. It is a device for moving. The instrument 10 has a shape and dimensions that can be grasped and operated by an operator with one hand.

As shown in FIG. 1, the instrument 10 includes a barrel body 20, a tip member 30, a movable shaft 40, a holding member 50, a permanent magnet 60, a coil spring 70, an adjusting screw 80, and a cap 90. The barrel body 20 and the tip member 30 form the body 11 of the instrument 10.

The barrel main body 20 is a cylindrical member (hollow columnar member) having a predetermined wall thickness. That is, the barrel main body 20 is a cylindrical body having a central shaft C1 having an outer diameter of φ1 and an inner diameter of φ2. Both ends of the barrel body 20 are open. A tip member 30 is attached to one end of the barrel body 20. A cap 90 is attached to the other end of the barrel body 20. Hereinafter, the side on which the tip member 30 is mounted (lower side of the paper surface in FIG. 1) is the "front side or front end side", and the side on which the cap 90 is mounted (upper side of the paper surface in FIG. 1) is the "rear side or rear end". It is called "department side".

The barrel body 20 is made of a non-magnetic material (resin in this example). The barrel body 20 is transparent but may be opaque. As shown in FIGS. 1 and 3, the diameter of the outer peripheral portion 21 near the front end (one side) of the barrel main body 20 is slightly smaller than the outer diameter φ1. A "thread groove (male screw)" is formed on the outer peripheral portion 21.

A ring-shaped first protruding portion 22 that protrudes inward in the radial direction is formed at a predetermined portion on the front side of the axial center of the barrel body 20. A non-slip member 23 having a rough outer surface is mounted on the outer peripheral surface of the barrel body 20. The non-slip member 23 is made of, for example, silicon, rubber, resin, or the like.

As shown in FIGS. 1 to 3, the tip member 30 is a "tapered cylindrical member (so-called" tapered cylinder ")" having a predetermined wall thickness. Both ends of the tip member 30 are open.

More specifically, the outer diameter of the base end portion (rear end portion) 31 of the tip member 30 is φ1 which is the same as the outer diameter of the barrel main body 20, and the outer diameter of the tip member 30 is the front end portion (front end portion). The diameter gradually decreases toward the side end) 32 (the diameter is reduced). In other words, the tip member 30 has a hollow cone shape having a predetermined wall thickness D1 and gradually reducing in diameter toward the front end portion 32 in the section from the predetermined position 33 on the rear side of the front end portion 32 to the front end portion 32. It has a tip portion 34 of.

The tip member 30 is made of the same "non-magnetic resin" as the resin constituting the barrel body 20. The resin constituting the tip member 30 is transparent, but it does not have to be transparent. Further, the tip member 30 may be made of a material different from the resin constituting the barrel main body 20.

The wall thickness in the vicinity of the base end portion 31 of the tip member 30 is thinner than the wall thickness of the other parts. That is, the tip member 30 has a thin-walled portion and a stepped portion 35 that forms a surface orthogonal to the axial direction. The outer diameter of this thin portion is equal to the outer diameter φ1 of the barrel body 20. The inner diameter of this thin-walled portion is substantially equal to the outer diameter of the outer peripheral portion 21 near the end of the barrel body 20. A "thread groove (female screw)" is formed in the inner peripheral portion 36 of the thin portion of the tip member 30. The tip member 30 is detachably attached to the barrel main body 20 by screwing the screw groove formed in the inner peripheral portion 36 into the screw groove formed in the outer peripheral portion 21.

As described above, the tip portion 34 of the tip member 30 is open. That is, a circular hole (through hole) 37 concentric with the central axis C1 is formed in the front end portion 32 of the tip portion 34. Further, the tip portion 34 is formed with a notch (recess) 38 having a predetermined length extending rearward from the front end portion 32. As shown in FIGS. 2A and 2B, four notches 38 are formed at equal intervals in the circumferential direction of the tip portion 34. The number of notches 38 is not limited to four, and may be any number of two or more.

The movable shaft 40 is a cylindrical member having a predetermined wall thickness. Both ends of the movable shaft 40 are open. Is the outer diameter of the movable shaft 40 slightly smaller than the inner diameter of the first protruding portion 22 and substantially the same as the inner diameter of the base end portion 31 which is the rear end portion of the tip member 30 as shown in FIG. Slightly small. The movable shaft 40 is made of a non-magnetic material (resin in this example).

As shown in FIG. 3, a ring-shaped second projecting portion 41 projecting radially outward and inward is formed at a predetermined portion on the front side of the movable shaft 40 in the axial direction. The outer diameter of the second protruding portion 41 is larger than the inner diameter of the first protruding portion 22 and smaller than the inner diameter φ2 of the barrel main body 20. The movable shaft 40 is housed inside the barrel body 20 and the tip member 30.

When the movable shaft 40 moves to the rear side, the rear surface 41a of the second protrusion 41 comes into contact with the front surface of the first protrusion 22 of the barrel body 20. That is, the movement of the movable shaft 40 to the rear side in the axis C1 direction is restricted by the first protruding portion 22 and the second protruding portion 41. The front side of the movable shaft 40 with respect to the second protruding portion 41 constitutes an insertion portion 42 into which the holding member 50 is inserted.

The holding member 50 is a solid columnar member. The holding member 50 is made of a non-magnetic material (resin in this example). The outer diameter of the holding member 50 is substantially equal to or slightly smaller than the inner diameter of the insertion portion 42 of the movable shaft 40. The holding member 50 has a cylindrical sleeve 52 formed on the front end surface 51 of the holding member 50. The outer diameter of the sleeve 52 is slightly smaller than the outer diameter of the holding member 50. The sleeve 52 projects forward from the front end surface 51 in a direction parallel to the axis C1 direction. A cylindrical recess having a predetermined depth is formed on the rear side of the holding member 50, and a female screw 53 is formed on the inner peripheral portion of the recess.

The magnet 60 is a columnar permanent magnet (for example, a neodymium magnet having Nd ₂ Fe ₁₄ B as the main phase). The outer diameter of the magnet 60 is substantially equal to the inner diameter of the sleeve 52. The magnet 60 is press-fitted into the sleeve 52 of the holding member 50, thereby being held by the holding member 50. The magnet 60 is removable from the holding member 50.

As shown in FIG. 3, the coil spring (compression coil spring) 70 is arranged in a compressed state between the front surface 41b of the second protruding portion 41 and the stepped portion 35 of the tip member 30. Therefore, the movable shaft 40 is always urged to the rear side by the restoring force (urging force) of the coil spring 70.

As shown in FIG. 1, the adjusting screw 80 has a head portion 81, a shaft portion 82, and a male screw portion 83. The adjusting screw 80 is made of an alloy. The head 81 is formed at the rear end of the adjusting screw 80. The outer diameter of the head 81 is larger than the outer diameter of the shaft portion 82 and smaller than the inner diameter φ2 of the shaft cylinder body 20. A groove for a Phillips screwdriver is formed on the rear side surface of the head 81 (see FIG. 4).

The rear end of the shaft 82 is continuous with the head 81. The outer diameter of the shaft portion 82 is smaller than the inner diameter of the movable shaft 40. The shaft portion 82 is housed in the movable shaft 40. The front end of the shaft 82 is continuous with the male thread 83.

As shown in FIG. 3, the male screw portion 83 is formed in the vicinity of the front end portion of the adjusting screw 80. The male threaded portion 83 is screwed into the female threaded portion 43 formed on the inner peripheral surface of the second protruding portion 41 of the movable shaft 40. Further, the male screw portion 83 is screwed into the female screw 53 of the holding member 50, so that the holding member 50 is held by the adjusting screw 80. That is, the adjusting screw 80 and the holding member 50 move integrally. The adjusting screw 80 and the holding member 50 are removable.

When the head 81 is rotated by a Phillips screwdriver, the adjusting screw 80 moves inside the movable shaft 40 in the axial direction with respect to the movable shaft 40 while the male screw portion 83 is screwed into the female screw portion 43. As shown in FIG. 1, when the adjusting screw 80 moves forward by a predetermined amount or more with respect to the movable shaft 40, the head 81 comes into contact with the rear end 44 of the movable shaft 40. As a result, the forward movement of the adjusting screw 80 with respect to the movable shaft 40 is restricted. The position of the adjusting screw 80 with respect to the movable shaft 40 in the axis C1 direction at this time is also referred to as "adjustment most advanced position". As shown in FIG. 3, when the adjusting screw 80 is in the adjustment most advanced position, a predetermined length is provided between the bottom surface 54 on the rear side of the holding member 50 and the front surface 41b of the second protruding portion 41. There is a void of L1 (about 3 mm).

As shown in FIG. 1, the cap 90 includes a head 91 and a cylindrical portion 92. The cap 90 is made of a non-magnetic material (resin in this example), and the head 91 and the cylindrical portion 92 are integrated. The head 91 is a solid cylindrical cylinder, and the rear side thereof has a substantially hemispherical shape. The rear end face of the cylindrical portion 92 is continuous with the front end face of the head 91, and the front end face is open. The inner diameter φ3 of the cylindrical portion 92 is substantially equal to or slightly smaller than the outer diameter φ4 of the movable shaft 40. Further, the inner diameter φ3 is larger than the outer diameter of the head 81. Therefore, the cylindrical portion 92 and the movable shaft 40 are detachably fitted to each other. The outer diameter φ5 of the cylindrical portion 92 is substantially equal to or slightly smaller than the inner diameter φ2 of the barrel main body 20. Therefore, the cylindrical portion 92 can be inserted into the barrel main body 20.

As shown in FIG. 4, the cylindrical portion 92 is formed with a notched portion 93 in which a part of the cylinder is cut out. Although not shown, another notch 93 is also provided at a position opposite to the notch 93 shown. As a result, the cylindrical portion 92 is easily elastically deformed. Therefore, the cap 90 can be easily attached to and detached from the movable shaft 40.

Referring to FIG. 1 again, a ring-shaped third projecting portion 45 projecting outward in the radial direction is formed at a predetermined portion on the rear side of the center of the movable shaft 40 in the axial direction. When the movable shaft 40 enters the inside of the cylindrical portion 92 of the cap 90 by a predetermined distance, the front end portion 94 of the cylindrical portion 92 comes into contact with the third protruding portion 45 (rear side surface). At this time, a gap is formed between the rear side surface of the head 81 and the front end surface of the head 91.

The outer diameter φ6 of the head 91 is substantially equal to the outer diameter φ1 of the barrel main body 20, and is larger than the outer diameter φ5 of the cylindrical portion 92. Therefore, a stepped portion 95 is formed between the head portion 91 and the cylindrical portion 92.

When the cap 90 is not pressed by the operator (that is, when no operating force toward the front side is applied to the cap 90), the second protrusion 41 of the movable shaft 40 is the first protrusion of the barrel body 20. The movable shaft 40 is moved rearward by the urging force of the coil spring 70 until it comes into contact with the portion 22 (see FIG. 3). The position of the movable shaft 40 in the axis C1 direction with respect to the barrel main body 20 at this time is referred to as an "initial position (or first position) of the movable shaft". Further, the position of the magnet 60 in the axis C1 direction with respect to the barrel body 20 when the movable shaft 40 is located at the initial position of the movable shaft is referred to as a "magnet initial position". As described above, in the first protruding portion 22 and the second protruding portion 41, when the operating force is not applied to the movable shaft 40, the movable shaft 40 is more than the first position due to the urging force (restoring force) of the coil spring 70. It constitutes a "first regulation unit" that regulates the rear end portion 24 so as not to move to the side. The coil spring 70 may be any elastic member that urges the movable shaft 40 to move rearward, and may be composed of, for example, a leaf spring.

When the cap 90 is pushed forward by the operator against the urging force (restoring force) of the coil spring 70 (that is, when an operating force toward the front side acts on the cap 90), the cap 90 is stepped. The front end 94 of the cap 90 pushes the third protrusion 45 of the movable shaft 40 forward until the portion 95 comes into contact with the rear end 24 of the barrel body 20. Therefore, the cap 90, the movable shaft 40, the holding member 50, and the magnet 60 move integrally to the front side with respect to the barrel main body 20. In other words, the movement of the movable shaft 40, the holding member 50, the magnet 60, etc. to the front side is regulated by the stepped portion 95 and the rear end portion 24.

Therefore, the "distance L2 between the stepped portion 95 and the rear end portion 24" when the cap 90 is not pressed and the movable shaft 40 is located at the initial position (first position) of the movable shaft is "movable". It corresponds to the stroke amount (maximum movement amount) of the shaft 40.

The instrument 10 has the following dimensions similar to a general writing instrument so that the operator can grasp and operate it with one hand.

The length L3 of the main body 11 including the barrel main body 20 and the tip member 30 is preferably in the range of 90 mm to 170 mm, more preferably in the range of 100 mm to 140 mm. In the present embodiment, the length L3 of the main body 11 is 115 mm. The total length L4 of the instrument 10 is 142 mm. When the adjusting screw 80 is in the adjustment maximum forward position and the movable shaft 40 is located in the movable shaft initial position (that is, when the magnet 60 is located in the magnet initial position), the front of the magnet 60 The distance L5 between the end 61 and the front end 32 of the tip member 30 (hereinafter referred to as “initial magnet separation distance”) is 7 mm. Further, the maximum movement amount L2 of the movable shaft 40 described above is 6 mm.

The outer diameter φ1 of the barrel main body 20 is preferably in the range of 5 mm to 20 mm, more preferably in the range of 7 mm to 15 mm. The outer diameter φ1 of the barrel body 20 of this embodiment is 11 mm.

The diameter φ7 of the hole 37 is 3.4 mm. The thickness (thickness) D1 of the tip member 30 at the front end 32 of the tip 34 is 1.1 mm. Therefore, the outer diameter φ8 of the front end portion 32 of the tip portion 34 is 5.6 mm. The diameter φ9 of the magnet 60 is 3 mm. The depth (length in the axis C1 direction) L8 of the notch 38 is 3 mm.

Next, the state of the instrument 10 when the cap 90 is pressed will be described.

FIG. 5 shows the instrument 10 when the operator presses the cap 90 toward the front side to the limit (that is, when an operating force is applied) while grasping the barrel main body 20 (main body portion 11). Indicates the state. In this state, the rear end portion 24 of the barrel main body 20 and the stepped portion 95 of the cap 90 are in contact with each other. The position of the movable shaft 40 in the axis C1 direction with respect to the barrel body 20 at this time is hereinafter referred to as a "movable shaft suction position (or a second position)". As described above, in the rear end portion 24 of the barrel body 20 and the stepped portion 95 of the cap 90, when the operating force is applied to the movable shaft 40, the movable shaft 40 is closer to the front end portion 32 than the second position. It constitutes the "Second Regulatory Department" that regulates the movement. When the operator releases the finger from the cap 90 while grasping the barrel main body 20 (main body portion 11), the movable shaft 40 moves to the initial position of the movable shaft by the urging force of the coil spring 70. In this way, the operator can easily operate the instrument 10 like a knock-type ballpoint pen. In the above description, the position of the adjusting screw 80 is the "adjustment most advanced position".

(Operation of this device)
The instrument 10 adsorbs a magnetic spherical component. More specifically, having magnetism means having paramagnetism, and means the property of being attracted by a magnet. The spherical component is, for example, a steel ball (iron sphere), a SUS ball (stainless steel sphere), or the like. Further, the diameter (also referred to as "first diameter" in the present specification) φ10 of the spherical component 100 to which the instrument 10 is adsorbed is, for example, about 4 mm. The weight of the spherical component 100 is, for example, about 0.3 g. The diameter φ7 of the hole 37 is set to be smaller than the diameter (first diameter) of the spherical component 100.

In one of the steps of manufacturing a product (for example, a mechanical switch) using the spherical part 100, the operator uses the instrument 10 to accommodate a large number of the spherical parts 100 in one of the spherical parts 100. Remove from the container and place it in place on the product. This step will be described with reference to FIGS. 6 to 8. In addition, in FIGS. 6 to 8, the adjusting screw 80 is adjusted to the “adjustment most advanced position”.

(Work procedure)
(Step 1) As shown in (1) of FIG. 6, the operator (not shown) holds the instrument 10 with one hand so that the tip member 30 thereof is vertically downward, and a large number of spheres are formed. It is brought close to the container 200 in which the part 100 is housed. At this time, the worker does not press the cap 90. That is, the movable shaft 40 is in the initial position of the movable shaft.

(Step 2) As shown in (2) of FIG. 6, the operator lowers the instrument 10 from above the container 200, and sets the front end portion 32 of the tip member 30 as “an arbitrary component in the component 100”. Press against. At this time, one component to which the front end portion 32 is pressed is hereinafter referred to as "specific component 101".

As a result, the edge 39 of the hole 37 and the specific component 101 come into contact with each other. Since the tip portion 34 has the thickness (thickness) D1 of the tip member 30 on its end face, other parts 100 (for example, parts 102 and 103) adjacent to the specific part 101 can be specified. It is separated from the component 101.

As shown in FIG. 7, in the case of this embodiment, the diameter φ10 of the spherical parts 101 to 103 is 4 mm, so that the specific part 101 and the part 102 (and the part 103) are at least a distance L6 (about 0. Separate by 5 mm). At this time, as described above, the initial magnet separation distance L5 is 7 mm. In this state, the vertically upward component of the force acting on the specific component 101 by the magnet 60 is smaller than the gravity component acting on the specific component 101. Therefore, the vertically upward component of the force acting on the component 102 (or the component 103) by the magnet 60 is naturally smaller than the gravity component acting on the component 102 (or the component 103).

(Step 3) As shown in (3) of FIG. 6, the operator maintains the state in which the edge portion 39 and the specific component 101 are in contact with each other, and the stepped portion 95 is the barrel main body 20. The cap 90 is pressed with one finger (typically one of the thumb, index finger and middle finger) of the hand holding the barrel body 20 until it abuts on the rear end 24. As a result, the movable shaft 40 moves from the movable shaft initial position (first position) to the movable shaft suction position (second position). At this time, since the movable shaft 40 moves toward the lower end side with respect to the barrel body 20 by the maximum movement amount L2 (= 6 mm), the distance between the front end 61 of the magnet 60 and the front end 32 of the tip member 30 ( The magnet separation distance) is 1 mm (see L5A in FIG. 5). In this state, the vertically upward component of the force acting on the specific component 101 by the magnet 60 is larger than the gravity component acting on the specific component 101. On the other hand, the vertically upward component of the force acting on the component 102 (or the component 103) by the magnet 60 remains smaller than the gravitational component acting on the component 102 (or the component 103).

(Step 4) As shown in (4) of FIG. 6, the operator holds down the cap 90 (that is, keeps the position of the movable shaft 40 at the movable shaft suction position (second position)). The instrument 10 is moved upward. As a result, the specific component 101 is lifted together with the instrument 10. On the other hand, the parts 100 other than the specific parts 101 such as the parts 102 and 103 cannot be lifted together with the instrument 10.

(Step 5) As shown in (5) of FIG. 8, the operator moves a specific part 101 vertically above a predetermined position or a predetermined position of the product 300 while pressing the cap 90.

(Step 6) As shown in (6) of FIG. 8, the operator stops pressing the cap 90 (removes the finger from the cap 90). As a result, the movable shaft 40 moves from the movable shaft suction position (second position) to the movable shaft initial position (first position). At this time, since the distance between the front end 61 of the magnet 60 and the front end 32 of the tip member 30 returns to the initial magnet separation distance L5, the vertically upward component of the force acting on the specific component 101 by the magnet 60 is released. It is smaller than the component of gravity acting on the specific component 101. As a result, the specific component 101 is detached (released) from the instrument 10.

(Step 7) As shown in (7) of FIG. 8, the operator raises the instrument 10. As a result, the specific component 101 is left behind (placed) in a predetermined position on the product 300.

In this way, by using the present instrument 10, the spherical magnetic component can be efficiently moved from the first place to the second place. For example, the time required for the work of taking out only one steel ball having a diameter of 4 mm stored in the container and placing it in a predetermined position was as follows. The worker at the time of measuring this time is a skilled person in the work of placing the steel ball in a predetermined position using tweezers.
Total time when the above work is performed 10 times continuously using the instrument 10: Approximately 20 seconds Total time when the above work is performed 10 times continuously using the tweezers: Approximately 30 seconds That is, the instrument 10 According to this, the working time could be shortened by about 33% as compared with the case of using tweezers.

(Operation of position adjustment mechanism)
Next, the operation of the position adjusting mechanism for adjusting the magnetic force acting on the specific component 101 will be described. The position adjusting mechanism adjusts the position of the magnet 60 with respect to the movable shaft 40 in the axis C1 direction.

As described above, the female threaded portion 43 of the movable shaft 40 and the male threaded portion 83 of the adjusting screw 80 are screwed together (see FIG. 3). Therefore, the rotational movement of the adjusting screw 80 is converted into a linear motion of the adjusting screw 80 in the axis C1 direction (front-back direction). For example, when the adjusting screw 80 is rotated counterclockwise by a Phillips screwdriver, the holding member 50 moves (backward) along the shaft C1 while rotating integrally with the adjusting screw 80. To do. When the holding member 50 is retracted by a predetermined amount, as shown in FIG. 9, the bottom surface 54 on the rear side of the holding member 50 comes into contact with the front surface 41b inside the second protrusion 41 of the movable shaft 40. As a result, one of the adjustment ranges by the adjusting screw 80 is restricted. In FIG. 9, the cap 90 is not pressed. That is, the movable shaft 40 is in the "movable shaft initial position (first position)".

At this time, the head 81 of the adjusting screw 80 is located at the position farthest from the rear end 44 of the movable shaft 40 to the rear side. Compared to the state shown in FIG. 1, the head 81 is retracted by 3 mm. That is, the distance L7 between the head 81 and the rear end 44 of the movable shaft 40 is 3 mm. The position of the adjusting screw 80 in the axis C1 direction at this time is also referred to as "adjustment last retracting position". At this time, the initial magnet separation distance L5 is 10 mm.

As shown in FIG. 10, when the position of the adjusting screw 80 in the axis C1 direction is in the adjustment last retracting position, the cap 90 is pushed forward and the movable shaft 40 moves to the movable shaft suction position (second position). When doing so, the magnet separation distance L5A is 4 mm. In this way, the adjusting screw 80 can move relative to the movable shaft 40 in the range from the adjustment most forward position to the adjustment last retracted position, whereby the magnet 60 fixed to the holding member 50 and the front end portion 32 The distance to and can be adjusted. As a result, when the movable shaft 40 is in the "movable shaft initial position (first position)" and the "movable shaft attraction position (second position)" without changing the magnet 60 to a magnet having a different magnetic force. In addition, the magnetic force acting on the specific component 101 (and the component 100 around the specific component 101) can be adjusted.

As described above, the present instrument (moving instrument) 10 is an instrument that can be grasped and operated by an operator with one hand in order to move the spherical part 100 having magnetism and having a first diameter of φ10.

The magnet 60 abuts the spherical part 100 on the front end 32 when the movable shaft 40 is in the "movable shaft initial position (first position)" when the spherical part 100 is brought into contact with the edge 39 of the hole 37. Although it cannot be lifted upward while being allowed to move, when the movable shaft 40 is in the "movable shaft suction position (second position)" when the spherical component 100 is brought into contact with the edge 39 of the hole 37, the spherical component 100 Is selected so that it can be lifted upward while in contact with the front end 32, and / or its position with respect to the movable shaft 40 is adjusted.

In addition, the main body portion 11 has a hollow cone shape having a predetermined wall thickness D1 in a section from a predetermined position 33 on the rear side of the front end portion 32 to the front end portion 32 and gradually reducing the diameter toward the front end portion 32. It has a tip 34. The hole 37 is a through hole penetrating the front end portion 32 of the tip portion 34, and the tip portion 34 is formed with a plurality (four) notches 38 extending rearward from the front end portion 32. The main body portion 11 includes a barrel main body 20 including a rear end portion 24 and a tip member 30 including a tip portion 34, and the barrel main body 20 holds the tip member 30 detachably.

According to this configuration, only one of the spherical parts is adsorbed by the magnetic force of the magnet 60 from the container containing a large number of magnetic spherical parts 100 by a simple operation by the operator, and this is adsorbed. The spherical component 100 can be detached (released) at a predetermined position.

Further, the notch 38 provided in the tip portion 34 reduces the area in which the edge portion 39 and the spherical component 100 come into contact with each other. Therefore, even when grease adheres to the spherical component 100, it is possible to prevent the spherical component from adhering to the edge portion 39 due to the adhesive force of the grease. Further, according to this configuration, it is possible to appropriately perform suction and detachment (release) according to the type (diameter / weight) of the spherical component. In addition, according to this configuration, it is possible to replace the tip member with an appropriate shape and / or a magnet with an appropriate magnetic force.

As described above, the holding member 50 is replaceable. Therefore, for example, a holding member to which a magnet having a magnetic force suitable for attracting steel balls is attached and a holding member to which a magnet having a magnetic force suitable for attracting SUS balls is attached are prepared in advance. Thereby, the optimum holding member can be selected according to the application.

As described above, the tip member 30 is replaceable. Therefore, for example, by preparing in advance several tip members having different hole inner diameters or hole shapes, the tip member having the optimum shape can be selected according to the outer diameter of the steel ball or SUS ball to be handled. Can be done. The diameter of the spherical component handled in the above embodiment was about 4 mm and the weight was about 0.3 mm. For example, the largest spherical component used in the mechanical switch has a diameter of about 8 mm. It weighs about 2.1 g. Therefore, the moving device for the spherical magnetic component according to the modified example can handle a large spherical component by replacing the tip member 30 with another tip member.

<Modification example>
The present invention is not limited to the above embodiment, and various modifications can be adopted within the scope of the present invention.

For example, in the above embodiment, the shape of the barrel body 20 is cylindrical, but the barrel body has, for example, a cylindrical body having a cross section orthogonal to the axial direction such as an equilateral triangle, a regular quadrangle, or a regular hexagon. It may be a polygonal tubular body).

In the above embodiment, a plurality of (four) notches 38 are formed in the tip portion 34 of the tip member 30. On the other hand, as shown in FIG. 11, the front portion of the tip member 30A instead of the tip member 30 has a plurality of (in this case, four) claw portions 391 extending forward around the hole 37A. It may be formed.

In the above embodiment, the tip member 30 is a hollow cone having a predetermined wall thickness D1 and gradually reducing in diameter toward the front end portion 32 in a section from a predetermined position 33 on the rear side of the front end portion to the front end portion 32. It had a shape. However, the shape of the tip member may be a shape in which the diameter is reduced stepwise, and the cross section orthogonal to the axial direction thereof may not necessarily be circular.

In the above embodiment, the hole 37 and the edge 39 of the tip member 30 are formed in a circular shape when viewed forward (see (B) in FIG. 2). However, the shapes of these holes and edges may be equilateral polygonal shapes (eg, equilateral triangles and squares), as shown in FIGS. 12A and 12B.

When the holes 37 and the edges 39 of the tip member 30 are the regular triangular holes 37B and the edges 39B, as shown in FIG. 12 (A), the spherical component 100 has substantially three points in them. Make point contact. Similarly, when the holes 37 and edges 39 of the tip member 30 are square holes 37C and edges 39C, as shown in FIG. 12B, the spherical component 100 has substantially four points in them. Make point contact with. Therefore, it is possible to further prevent the adsorbed spherical component 100 from remaining attached to the edge portion due to the viscosity of the grease adhering to the spherical component 100. The diameter φ8B of the circular ICB inscribed in the edge 39B and the diameter φ8C of the circular ICC inscribed in the edge 39C are set smaller than the diameter of the spherical component 100 to be attracted. The regular polygon may be a regular polygon of a regular pentagon or more.

In the above embodiment, the magnet 60 is made by adding an alnico magnet made of aluminum (Al), nickel (Ni), cobalt (Co) or the like, or barium (Ba) and strontium (Sr) using iron oxide as a main raw material. It may be a sintered ferrite magnet.

In the above embodiment, the movable shaft 40 is moved by pushing the cap 90 forward. Instead of this structure, as shown in FIG. 13, a sliding knob 26 that can move in the axial direction integrally with the movable shaft 40 may be provided on the side surface of the barrel main body 20D. In this case, the barrel main body 20D and the non-slip member 23D are provided with slit-shaped through holes 27 parallel to the axial direction so that the knob 26 can move in the axial direction. According to the moving device 10D according to this modification, the adjusting screw 80 can be operated without attaching / detaching the cap 90. Further, according to this modification, even an operator who has a small hand and has difficulty in operating the cap 90 can easily operate the knob 26.

Further, one of the moving devices for spherical magnetic parts according to the modified example may include both a cap 90 and a knob 26. According to this, the worker can select a holding method that is easy to work with, and workability is improved.

As shown in FIG. 14, a flange 28 may be provided on the outer peripheral surface of the barrel main body 20E for the operator to hang the side surface of the finger or the hand. According to the moving device 10E according to this modification, the operator can also operate the moving device 10E like a syringe. That is, the operator can put the index finger and the middle finger on the flange 28 and press the cap 90 with the thumb. This makes it easier to place the spherical component 100 in a narrow space. Further, by providing the flanges 28 at two locations on the left and right instead of the entire circumference of the barrel body 20E, for example, it is possible to prevent the moving tool 10E placed on the workbench from rolling down from the workbench. ..

In the above embodiment, the non-slip member 23 is provided on the outer peripheral surface of the barrel main body 20, but instead, a part of the outer peripheral surface may be roughened. According to this, when the worker grips the instrument, it becomes difficult to slip, so that the workability is expected to be improved.

In the above embodiment, the adjusting screw 80 is provided, but the adjusting screw 80 may be omitted. In this case, for example, the holding member may be press-fitted and fixed to the insertion portion of the movable shaft from the front. At this time, the relative position of the magnet 60 in the axis C1 direction can be easily adjusted by adjusting the depth at which the holding member is press-fitted into the insertion portion. According to this modification, the number of parts can be reduced and a cheaper magnetic adsorption device can be realized.

In the above embodiment, the hole 37 is a through hole that penetrates the front end portion 32 and communicates the inside and the outside of the barrel body 20. On the other hand, as shown in FIG. 15, the hole 37 communicates the inside and the outside of the barrel body 20 if the spherical part is formed so as to be in contact with the edge of the hole 37. There is no need. In other words, the main body portion 11F may have a hollow columnar shape in which the tip portion 34F is closed.

In the above embodiment, the movable shaft 40, the holding member 50 and the cap 90 are separate bodies, but when the adjusting screw 80 is omitted, even if the movable shaft 40 and the holding member 50 are integrally formed. Good. That is, the magnet 60 may be directly fixed to the movable shaft 40. Further, the movable shaft 40 and the cap 90 may be integrally formed, or the movable shaft 40, the holding member 50 and the cap 90 may be integrally formed.

In the above embodiment, the main body 11 is composed of the barrel main body 20 and the tip member 30, but the barrel main body 20 and the tip member 30 may be integrally formed.

10 ... Moving equipment, 11 ... Main body, 20 ... Shaft cylinder body, 22 ... First protrusion, 24 ... Rear end, 30 ... Tip member, 32 ... Front end, 33 ... Predetermined position, 34 ... Tip, 37 ... hole, 38 ... notch, 39 ... edge, 40 ... movable shaft, 41 ... second protrusion, 42 ... insertion part, 43 ... female screw part, 50 ... holding member, 52 ... sleeve, 60 ... permanent magnet ( Magnet), 70 ... Coil spring, 80 ... Adjustment screw, 81 ... Head, 83 ... Male screw part, 90 ... Cap, 95 ... Stepped part, 100 ... Spherical part, C1 ... Shaft (central axis), D1 ... Tip Member thickness, φ7… outer diameter of hole, φ10… diameter of spherical part (first diameter).

Claims (6)

A tool for moving spherical magnetic parts that can be grasped and operated by an operator with one hand in order to move a spherical part having magnetism and having a first diameter.
A hollow columnar main body having a front end and a rear end,
A rod-shaped movable shaft portion that is inserted into the main body portion and can move with respect to the main body portion in the axial direction of the main body portion,
A permanent magnet that is held at the end of the movable shaft portion on the front end side and can move in the axial direction integrally with the movable shaft portion.
An elastic member that applies an urging force to the movable shaft portion to move the movable shaft portion from the front end portion to the rear end portion with respect to the main body portion.
With
The movable shaft portion is configured so that an operating force that opposes the urging force for moving the movable shaft portion from the rear end portion toward the front end portion can be input from the outside of the main body portion.
The main body and the movable shaft are regulated so that the movable shaft does not move to the rear end side from the first position due to the urging force when the operating force is not applied to the movable shaft. When the operating force is applied to the movable shaft portion, the movable shaft portion moves to the front end portion side of the first position rather than the second position on the front end portion side. Equipped with a second regulatory department that regulates not to
The main body has a hole formed in the front end portion, and the diameter of a circle inscribed in the edge portion of the formed hole at the front end portion is smaller than the first diameter.
When the spherical component is brought into contact with the edge of the hole and the movable shaft portion is moved to the second position, the second regulating portion hits the permanent magnet and the spherical component with each other. It was configured not to touch,
Mobile equipment. In the moving device for spherical magnetic parts according to claim 1,
The permanent magnet is
When the spherical component is brought into contact with the edge portion of the hole and the movable shaft portion is in the first position, the spherical component cannot be lifted upward while being in contact with the edge portion. ,
When the spherical component is brought into contact with the edge portion of the hole, when the movable shaft portion is in the second position, the spherical component can be lifted upward while being in contact with the edge portion. Selected for,
Mobile equipment. The moving device for spherical magnetic parts according to claim 2.
Further provided with a position adjusting mechanism capable of adjusting the axial position of the permanent magnet with respect to the movable shaft portion.
Mobile equipment. In the moving device for spherical magnetic parts according to claim 2 or 3.
The main body
In the section from the predetermined position on the rear end portion side of the front end portion to the front end portion, the tip portion has a hollow cone shape having a predetermined wall thickness and gradually reducing in diameter toward the front end portion.
The hole is a through hole that penetrates the front end portion of the tip portion.
A plurality of notches extending from the front end portion to the rear end portion side are formed in the tip portion.
Mobile equipment. The moving device for spherical magnetic parts according to any one of claims 1 to 4.
The main body portion includes a barrel main body including the rear end portion and a tip member including the tip end portion.
The barrel body holds the tip member detachably.
Mobile equipment. The moving device for spherical magnetic parts according to any one of claims 1 to 5.
The movable shaft portion holds the permanent magnet detachably.
Mobile equipment.

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