JP2012243440A - Tool for attaching and detaching electric bulb - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool for attaching and detaching an electric bulb capable of avoiding breakage of the electric bulb and a receiving part and the like of the electric bulb, and easily replacing the electric bulb.SOLUTION: A tool 10 for attaching and detaching an electric bulb comprises a handle part 12 having a predetermined length, and a cup-shaped recess body 14 mounted to one end 12a of the handle part 12 and having an opening edge 14b that can tightly contact a surface of an electric bulb E. Air is sucked by suction means from a sealed space 16 in the recess body 14 tightly contacting the surface of the electric bulb E via a hole part 14d formed on a bottom 14a of the recess body 14. The electric bulb E can be sucked and held to the recess body 14 by a negative pressure generated by this suction, and can be easily replaced. Furthermore, there is no need of pressing the recess body 14 to the electric bulb E with an excessive force, and therefore, breakage of the electric bulb E due to the excessive force can be prevented. Also, an outside diameter, a length and the like of the handle part 12 can be appropriately adjusted, so as to easily replace the electric bulb E provided at a recess, in which a hand cannot be inserted, or a high place, to which a hand cannot reach.

Description

  The present invention relates to a light bulb attachment / detachment tool, and more particularly, to a light bulb attachment / detachment tool for attaching / detaching a light bulb attached to a recess that cannot be reached or a high place that cannot be reached.

  Conventionally, instead of grasping the light bulb directly by hand, instead of grasping the light bulb directly by hand, instead of grasping the light bulb directly by hand, such as a light bulb for a signal lamp embedded in the recess of the switchboard, it is a rubber or vinyl tube And press it against the bulb's spherical surface to rotate the bulb and remove it from the socket, or replace it by screwing a new bulb into the socket. However, the rubber attached to the tip of the rod slides with respect to the spherical surface of the bulb, making it difficult for the bulb to rotate, and it has taken a long time to remove and install the bulb.

  A similar problem has been reported when replacing a light bulb mounted in a high place where the hand cannot reach such as the ceiling of the room. In response to this problem, for example, it has been proposed to use a light bulb replacement tool in which a concave gripping portion capable of gripping a spherical surface of a light bulb is attached to the tip of a rod-like body (for example, Patent Document 1). According to this light bulb replacement tool, first, the one end side of the rod-like body is held, and the concave grip portion on the other end side is pressed against the spherical surface of the light bulb provided at a high place to hold the light bulb. Then, while maintaining this pressing force, rotate the bulb with respect to the socket of the bulb to remove the bulb, and press and hold the new bulb against the socket again through the gripping part to maintain the pressing force. Rotate the light bulb that is gripped and attach it to the socket. Thus, by maintaining the state where the grip portion is pressed against the spherical surface of the bulb, the grip portion can grip the bulb, and the bulb can be rotated without slipping and smoothly exchanged.

Utility model registration No.3081334

  However, according to the light bulb replacement tool described in Patent Document 1, when the light bulb is attached and detached, the grip portion is maintained in a state of being pressed against the spherical surface of the light bulb by a strong pressing force. Therefore, if this pressing force is excessive, the bulb may be damaged. Furthermore, not only the light bulb but also the socket receiving the pressing force via the light bulb and the socket receiving portion are sequentially applied with a pressing force, and there is a possibility that the fragile portion of any member is damaged or deformed.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a light bulb attachment / detachment tool that avoids breakage of a light bulb and a light receiving portion of the light bulb and that allows easy replacement of the light bulb.

  The invention according to claim 1 for solving the above object is a light bulb attachment / detachment tool for attaching / detaching a light bulb, wherein a handle having a predetermined length is attached to one end of the handle, and is attached to the surface of the light bulb. A bottomed concave body having an opening edge that can be closely contacted, a hole formed in a part of the concave body, and a closed space in the concave body in a state where the opening edge is in close contact with the surface of the bulb. A suction means for sucking air through the hole, and the suction means is provided on the other end side of the handle and has an operation part for operating the suction.

  According to this configuration, the air in the sealed space formed by the close contact between the opening edge portion and the surface of the bulb is sucked by the suction means through the hole formed in the concave body to be in a negative pressure state. And since the light bulb is attracted and held by the concave body by this negative pressure, the concave body rotates together by rotating the handle as it is, and the light bulb held by the concave body also rotates. This allows the bulb to be replaced to be easily rotated and removed in the direction of removal relative to the socket, as well as easily holding a new bulb in the concave body and rotating the handle in the direction of bulb attachment. Can be attached.

  That is, when the concave body rotates with the rotation of the handle due to the suction of the concave body, sufficient frictional force is secured against the surface of the bulb, and it is not necessary to press the concave body against the bulb with excessive force. The bulb is prevented from being damaged by this excessive pressing force.

  Furthermore, if the handle is thin and the width of the concave body is reduced, the light bulb attaching / detaching tool can be inserted into a concave portion that cannot be reached. Can be exchanged. Further, if the handle is made long, the concave body can reach a high place where the hand cannot reach such as a ceiling, and the light bulb provided at this high place can be easily replaced.

  According to a second aspect of the present invention, in the electric bulb attaching / detaching tool according to the first aspect, the concave body is formed of a material having elasticity.

  According to this configuration, when the air in the space formed by the close contact between the opening edge and the bulb surface is sucked by the suction means, the opening edge is elastically deformed so as to follow the shape of the bulb surface by the elasticity of the concave body. The opening edge portion can take a wide area in close contact with the bulb spherical surface. Therefore, the frictional force against the surface of the light bulb is also improved, and the light bulb can be held more strongly without damaging the light bulb.

  According to a third aspect of the present invention, in the electric bulb attaching / detaching tool according to the first or second aspect, the suction means configures the handle as a syringe with the other end open, and from the other end side of the handle. It has a structure in which a plunger is inserted, and the hole is provided at a position where the space in the syringe communicates with the sealed space.

  According to this configuration, the negative pressure state by the suction means in the space formed by the close contact between the opening edge and the bulb surface is simply pulled by pulling the plunger inserted into the handle portion configured as a syringe in the pulling direction. The negative pressure state can be released by the operation of pushing the plunger back in the insertion direction. Therefore, the structure of the suction means can be simplified without using a particularly large pump mechanism. Furthermore, since the suction means is composed of a handle (ie, a syringe) and an internal member (ie, a plunger), the entire configuration of the bulb attaching / detaching tool is slimmed down. Optimized for use in rough recesses.

  According to a fourth aspect of the present invention, in the light bulb attaching / detaching tool according to the first or second aspect, the handle portion has a telescopic structure, and the suction means is provided on the other end side of the handle portion, A suction part having a syringe formed separately from the handle part, a plunger inserted from the proximal end side of the syringe, and a tubular communication pipe communicating between the hole part and the distal end opening of the syringe And.

  According to this structure, the handle can be adjusted to an appropriate length, and the handle can be expanded and contracted according to the height of the place where the light bulb is attached, for example, the ceiling. This makes it easier to replace the bulb. Furthermore, since the handle can be stored with the shortest length when not in use, the space required for storage can be reduced.

  According to the present invention, the bulb can be attracted and held in the concave body by the negative pressure generated in the sealed space, and the frictional force between the opening edge and the bulb surface can be sufficiently secured. Therefore, it is not necessary to secure the frictional force by pressing the concave body against the light bulb with an excessive force, so that the light bulb is prevented from being damaged due to the excessive pressing force. There is no need to purchase a new light bulb for the damaged part.

  Furthermore, by appropriately adjusting the outer diameter, length, etc. of the handle, it becomes possible to easily replace light bulbs provided in recesses that cannot be reached or high places that cannot be reached. Can be widely used in places.

It is a figure for demonstrating the bulb | ball installation / removal tool 10 which concerns on embodiment of this invention. It is the elements on larger scale for demonstrating the structure of a latch mechanism. It is a figure which shows the light bulb attachment / detachment tool 30 which concerns on other embodiment of this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram for explaining a light bulb attaching / detaching tool 10 according to an embodiment of the present invention. As shown in the figure, the light bulb attaching / detaching tool 10 has a bowl-like shape at one end 12a of the handle 12 formed as a cylindrical tubular body (for example, a length of about 30 cm and an outer diameter of about 0.5 to 2.0 cm). The bottom portion 14a of the bottomed concave body 14 formed in is connected to the bottom portion 14a. The upper side of the concave body 14 in the drawing is an opening edge 14b having a substantially circular shape (for example, an outer diameter of about 0.5 to 2.0 cm) that can be in close contact with the surface of the substantially spherical bulb E. The concave surface of the concave body 14 facing the light bulb E is further provided with a concave stepped portion 14c. When the light bulb E comes into close contact with the opening edge portion 14b, a sealed space 16 is formed in the concave body 14. It has become. The concave body 14 is formed of an elastic material (for example, a polymer material such as natural rubber or synthetic rubber), and the vicinity of the opening edge 14b is thinned. Therefore, when the opening edge portion 14b comes into contact with the light bulb E, the vicinity of the opening edge portion 14b is elastically deformed so that the light bulb E is in close contact. Further, a hole 14 d that penetrates the concave body 14 is provided in the bottom 14 a of the concave body 14.

  Further, the bulb attaching / detaching tool 10 has suction means for sucking air from the sealed space 16. This suction means constitutes the handle portion 12 as a syringe with the other end open, and a rod-like body that is in sliding contact with the inner peripheral surface of the handle portion 12 from the other end side of the handle portion 12 in a state where the tip portion 18a is in close contact therewith. The plunger 18 configured as is inserted. The hole 14d of the concave body is located at a position where the inner space 20 of the syringe, which can be surrounded by the tip 18a of the plunger 18, the handle 12 and the bottom 14a of the concave body 14, and the sealed space 16 in the concave body 14 communicate with each other. Is provided. Further, the suction means has an operation portion for operating the suction of air from the sealed space 16 on the other end side of the handle portion 12. The operating portion includes a grip portion 12b made of minute unevenness provided on the outer peripheral surface of the other end side of the handle portion 12 over the entire circumference, and a substantially disc-shaped handle 18b provided at the proximal end of the plunger 18. Have The operator operates the suction of air from the sealed space 16 by grasping the grip portion 12b with one hand, grasping the handle 18b with the other hand, and sliding the plunger 18 up and down in the direction of the arrow 100 or vice versa. .

  The operation unit may have a latch mechanism for stabilizing the suction state by the suction means. The latch mechanism basically includes a groove portion described later provided at the side portion of the plunger 18 and a latch portion 22 provided at the other end of the handle portion 12. Hereinafter, the latch mechanism will be described in detail. FIG. 2 is a partially enlarged view for explaining the configuration of the latch mechanism. As shown in the drawing, the side portion 18c of the plunger 18 has a check groove portion 18d, which is a groove portion that is formed so as to be indented into the side portion 18c while being narrowed from the upper side to the lower side in the drawing. A plurality of stages are provided in a multistage manner along the length direction of the plunger 18. A latch portion 22 that is also a part of the latch mechanism is provided so as to protrude in the radial direction of the handle portion 12 from the other end of the handle portion 12. The latch portion 22 includes a rod-shaped latch 26 having a shape that fits into the check groove portion 18 d inside the casing 24. The latch 26 is provided with an operation protrusion 26 a that protrudes outward from the casing 24. Further, the operation protrusion 26 a is urged in the direction of the arrow 200 by a latch spring 28 provided in the casing 24. Due to this urging force, the latch 26 is maintained in a state of being in contact with any one of the check groove portions 18d. By these latch mechanisms, the upward movement of the plunger 18 is stopped, and the suction state by the suction means is stably maintained.

  Next, the attachment / detachment operation of the light bulb E using the light bulb attachment / detachment apparatus 10 according to the embodiment of the present invention will be described. The light bulb E is, for example, a signal lamp light bulb embedded in a recess of the switchboard, that is, a recess that cannot be accessed. First, the bulb attaching / detaching device 10 is inserted into such a narrow recess from the concave body 14 side, and the plunger 18 is inserted into the handle 12 until the tip 18a of the plunger 18 abuts against the bottom 14a of the concave body 14. In the inserted state, the opening edge 14b is brought into close contact with the surface of the bulb E to be replaced. At this time, it is preferable that the opening edge portion 14b is pushed slightly toward the surface of the light bulb E to elastically deform the vicinity of the opening edge portion 14b so that the contact area between the opening edge portion 14b and the surface of the light bulb E is increased. This is because the frictional force between the opening edge 14b and the light bulb E can be increased. Thereafter, the grip portion 12b is grasped with one hand, the handle 18b is grasped with the other hand, and the handle 18b is pulled in the direction of the arrow 100. As a result, the plunger 18 slides in the direction of the arrow 100 to increase the volume of the syringe inner space 20, and accordingly, air in the sealed space 16 communicating with the syringe inner space 20 is sucked and negative pressure is generated in the sealed space 16. The bulb E is attracted and held in the concave body 14. In this holding state, the latch 26 is brought into contact with the check groove portion 18d and the upward movement of the plunger 18 is stopped, so that the suction holding state of the light bulb E with respect to the concave body 14 is stably maintained. In this state, the bulb E held in the concave body 14 is rotated by rotating the handle 12 in a direction to remove the bulb E from the socket (not shown), and the bulb E can be easily removed from the socket. After the light bulb E is removed from the socket, the operation projection 26a is pushed down in the direction opposite to the arrow 200 in FIG. 2 against the urging force of the latch spring 28 to release the engagement state between the latch 26 and the check groove 18d. . Accordingly, the plunger 18 can slide in the direction opposite to the arrow 100 in FIG. 1 and the decompressed state of the sealed space 16 can be released, so that the light bulb E can be easily removed from the concave body 14.

  The operation of attaching the new light bulb E can be performed in the reverse flow to the operation of removing the light bulb E described above. That is, a new bulb E is attracted and held to the concave body 14 by the action of the suction means, the held bulb E is brought into contact with the socket, and the handle 12 is rotated in the mounting direction of the bulb E with respect to the socket as it is. The bulb E can be attached to the socket by rotating the bulb E held in the concave body 14. Thereafter, the suction state between the attached light bulb E and the concave body 14 is released, and the concave body 14 is separated from the light bulb E.

  Therefore, according to the bulb attaching / detaching tool 10 according to the present invention, the bulb E can be strongly adsorbed and held by the negative pressure generated in the sealed space 16 formed by the close contact between the concave body 14 and the bulb E, and can be easily replaced. It becomes possible. And since it is not necessary to press the concave body 14 with the excessive force with respect to the light bulb E, the breakage | damage of the light bulb E by this excessive pressing force is avoided. Furthermore, the light bulb attaching / detaching tool 10 has a slim structure in which the suction means is constituted by the handle portion 12 and a member (plunger 18) inside the handle portion, and the handle portion 12 and the concave body 14 are arranged as described above. Since it has a diameter, a light bulb provided in a narrow recess that cannot be accessed, such as a light bulb for a signal lamp embedded in a recess in a switchboard, can be easily replaced.

  In the present embodiment, the suction means has a structure in which the handle 12 is configured as a syringe with the other end open, and the plunger 18 is inserted from the other end of the handle 12. The present invention is not limited, and various modifications can be applied.

  FIG. 3 is a diagram showing a light bulb attaching / detaching tool 30 according to another embodiment of the present invention. In the figure, elements similar to those of the embodiment shown in FIG.

  As shown in the figure, the handle 12 has a first handle 12-1 formed in a hollow cylindrical shape with an open end at the other end 12a attached to the bottom 14a of the concave body 14, and a first handle 12-. 1 has a nesting structure including a second handle portion 12-2 formed in a cylindrical shape with both ends open and a cylindrical shape having an outer diameter and an insertable length. The first handle portion 12-1 and the second handle portion 12-2 are fixed by, for example, a set screw 32 provided at an upper end in the drawing of the second handle portion, and the set screw 32 is fixed to the first handle portion 12-. The length of the handle 12 can be adjusted by adjusting the position in contact with 1 by moving it in the direction of the arrow 300 or in the direction opposite to the arrow 300. The lengths of the first handle portion 12-1 and the second handle portion 12-2 are, for example, about 1 m50 cm, respectively. Thereby, the length of the handle can be adjusted within a range of about 1 m50 cm to 3 m. The handle portion 12 may have a nested structure with three or more handle portion 12 members, for example. This allows for a wider range of length adjustments.

  In the present embodiment, the suction means is formed as a separate body independently of the handle 12. That is, the suction means includes a hollow cylindrical syringe 34 provided to the handle portion 12-2 on the lower side of the handle portion 12-2 in the drawing, and a proximal end 34a of the syringe 34 in the syringe 34. And a plunger 18 inserted in the direction of the arrow 300. Further, the suction means has a tubular communication pipe 36 that communicates between the tip opening 34 b that is the opening of the tip of the syringe 34 and the hole 14 d of the concave body 14. Through this communication pipe 36, the syringe inner space 20 communicates with the sealed space 16 in the concave body 14 in close contact with the surface of the light bulb E. The communication pipe 36 is made of a material having a certain pressure resistance.

  According to this configuration, since the handle portion 12 has the above-described stretchable structure and length, the handle portion can be applied to a light bulb E provided at a high place out of reach, for example, a light bulb E installed on the ceiling of a room. By extending the portion 12, the concave body 14 can be brought into close contact with the light bulb E, and the handle portion 12 can be expanded and contracted according to the height of the height, and the workability of exchanging the light bulb E is also improved. improves. Further, when the light bulb attaching / detaching tool 30 is not used, the handle portion 12 can be retracted to accommodate the extra space.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.

  For example, the stretchable structure of the handle 12 in the other embodiments may use any conventionally known stretchable structure other than the above structure. For example, a lattice structure such as a magic hand or a bellows structure may be used.

10, 30 Light bulb attachment / detachment tool 12 Handle (suction means)
12-1, 12-2 Handle (stretchable structure)
12b Grip part (operation part)
14 Concave body 14b Opening edge 14d Hole 16 Sealed space 18 Plunger (suction means or suction part)
18b Handle (operation part)
20 Syringe inner space 34 Syringe (suction part)
36 communication pipe

Claims (4)

In the bulb attachment / detachment tool for attaching / detaching the bulb,
A handle having a predetermined length;
A bottomed concave body attached to one end of the handle and having an opening edge that can be in close contact with the bulb surface;
A hole formed in a part of the concave body;
Suction means for sucking air through the hole from the sealed space in the concave body in a state where the opening edge is in close contact with the surface of the bulb,
The suction means is provided on the other end side of the handle part, and has an operation part for operating the suction.   The light bulb attaching / detaching tool according to claim 1, wherein the concave body is formed of a material having elasticity. The suction means is
The handle is configured as a syringe with the other end open, and a plunger is inserted from the other end side of the handle,
The said hole part was provided in the position which connects the said syringe inner space and the said sealed space, The light bulb attachment / detachment tool of Claim 1 or 2 characterized by the above-mentioned. The handle part has an elastic structure,
The suction means is
A suction part provided on the other end side of the handle part, and having a syringe formed separately from the handle part, and a plunger inserted from the base end side of the syringe;
The light bulb attachment / detachment tool according to claim 1, further comprising a tubular communication tube communicating between the hole and the tip opening of the syringe.

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