JP2008198549A - Bulb attachment / detachment replacement - Google Patents

Abstract

An object of the present invention is to provide a chuck that can stably and securely hold a glass bulb of a light bulb or can be easily attached and detached.
SOLUTION: At least three chuck arms 2a, 2b, 2c each including a vertically long U-shaped arm portion 20 and a base frame portion 21 for holding the arm portion 20 are provided. Are pivotally attached to a bracket portion 30 provided on the side surface near the distal end of the base frame portion, and the base frame portions are tensioned and supported by tension springs 22a, 22b, and 22c extending between the side portions of the base frame portion 21, and the distal end of the arm portion 20 is supported. A chuck device 2 is provided in which the chuck arms 2a, 2b, 2c are assembled at regular intervals around the side surface near the tip of the handle bar 1 with the side facing the surrounding direction of the glass bulb.
[Selection] Figure 1

Description

  The present invention relates to a light bulb attaching / detaching / changing device used for attaching / detaching a light bulb installed at a relatively high place such as a ceiling.

  As a light bulb attachment / detachment / replacement device, four scissor plates having a curved shape corresponding to the vertical curve of the glass bulb are provided, and the base end side of each scissor plate is pivotally supported by a support pin on a base, and each scissor plate is attached. Standing from four directions at intervals of approximately 90 ° of the pedestal and extending the tension spring between the ends of the adjacent scissor plates, and each scissor plate is expanded or displaced by the tension springs, so that the light bulbs are There is known one provided with a chucking tool that can be gripped or taken out (Patent Document 1).

  In the chuck, the scissor plate is a thin plate that touches the side of the glass bulb, and the tension spring is stretched around the tip of the scissor plate so that it has four sides. Therefore, when the glass balls are received between the scissors, the glass springs are not easily received because the tension spring extends while sliding on the glass balls.

In addition, the tension springs are located on the side of the base that is relatively smaller in diameter than the glass balls between the ends of the scissors plate. Is required. Further, after the bulb is replaced and attached, the tension springs need to be extended in order to remove the chuck from the glass bulb.
JP-A-7-6741

  An object of the present invention is to constitute a light bulb attachment / detachment exchange device including a chuck that can stably and securely hold a glass bulb of a light bulb or can be easily attached / detached.

  In addition, it is an object of the present invention to provide a light bulb attaching / detaching / replacement device including a chuck that can stably and securely hold several types of light bulbs having different diameters of glass bulbs.

Claim 1 of the present application provides a vertically long U-shaped arm portion whose front end is curved in an arc shape corresponding to the spherical surface of the glass sphere, and a laterally U-shaped base that holds the arm portion on the shaft end side. At least three chuck arms consisting of a frame part,
A bracket part that fits in the U-shape of the base frame part is provided on the side surface near the tip of the handle bar, and the base frame part is pivotally attached to the bracket part by a support shaft, and the side adjacent to the base frame part above the pivot position The base frame parts are tensioned and supported by a tension spring that spans between the parts, and the chuck arms are assembled at regular intervals around the side surface near the tip of the handle bar with the tip side of the arm part facing the glass bulb. A chuck is provided.

  According to claim 2 of the present application, a cylindrical holder is fitted and fixed to the tip side of the handle bar, each chuck arm is assembled at regular intervals around the side surface near the tip of the holder, and the non-slip for receiving the top surface of the glass bulb is received. A ring pad is provided on the cylindrical end side of the holder.

  According to claim 3 of the present application, a vertically long chuck arm whose tip end side of the arm portion extends to a spherical position close to the base of a large-diameter glass sphere is assembled at regular intervals around the side surface near the tip of the holder, and a cylindrical slide cylinder is attached to the holder. A non-slip ring pad for receiving the top surface of the glass bulb is attached to the end of the slide barrel so that the height can be adjusted according to the large and small diameter of the glass bulb. It is characterized by.

  Claim 4 of the present application includes a cylindrical slide cylinder that can be extended upward from the inside of the holder cylinder with an extension spring, and a tightening bolt that sets the extension length of the slide cylinder from the side surface of the holder. A non-slip ring pad for receiving the top surface of the glass bulb is attached to the tube end side of the slide tube whose height can be adjusted according to the large and small diameter of the glass bulb. It is characterized by.

  According to the light bulb replacement device according to claim 1 of the present application, the periphery of the glass bulb is provided by the arm portion of the chuck arm that has a vertically long U-shape whose front end is curved in an arc shape corresponding to the spherical surface of the glass bulb. Can be stably gripped over a wide range with a small contact surface. In addition, since a tension spring that expands or closes the chuck arm is stretched between adjacent side portions above the pivot position of the base frame portion, the tension spring is not obstructed at the tip of the arm that faces the surrounding direction of the glass bulb. In addition, it is possible to hold a light bulb in a high place stably and securely with a chuck or to attach or remove it easily.

  According to the light bulb replacement device of claim 2 of the present application, the cylindrical holder is fitted and fixed to the tip side of the handle bar, and each chuck arm is assembled around the side surface near the tip of the holder at regular intervals. The arm can be placed around the circumference of the glass bulb, and the ring pad for slipping to catch the top surface of the glass bulb is placed on the tube end side of the holder. In this case, the glass ball is prevented from slipping with a ring pad and can be securely held with a chuck or can be attached or removed easily.

  According to the light bulb replacement device according to claim 3 of the present application, the longitudinally long chuck arm that extends to the spherical surface position near the base of the large-diameter glass bulb is assembled at regular intervals around the side surface near the distal end of the holder, A cylindrical slide tube can be extended upward from the inside of the holder tube, and a non-slip ring pad for receiving the top surface of the glass bulb can be adjusted in height according to the size of the glass bulb. Because it is attached to the side, even glass bulbs with different diameters can be gripped stably and securely with a chuck or can be attached or removed easily.

  According to the light bulb replacement device of claim 4 of the present application, the cylindrical slide tube can be extended upward from the inside of the holder cylinder by the extension spring, and the clamping bolt for setting the extension length of the slide cylinder is provided in the holder. Therefore, the height of the ring pad can be easily adjusted according to the glass bulbs having different large and small diameters.

  The illustrated light bulb exchange device is configured to attach and detach a light bulb provided at a relatively high place. Moreover, it is comprised so that several types of light bulbs from which the diameter of a glass bulb | ball differs may be attached or removed.

  As shown in FIG. 1, this bulb attaching / detaching / replacement device holds a handle bar 1 that is held by a worker (not shown) by hand to rotate the shaft to screw or unscrew the base, and a glass bulb. The chuck tool 2 is provided. The handle bar 1 is a round pipe member, and is provided as a single long bar or a plurality of stretchable connecting bars. The handle bar 1 is provided with a cylindrical holder 3 fitted on the tip side, and the chucking tool 2 is assembled on the basis of the holder 3.

  The chuck tool 2 is assembled from three chuck arms 2a, 2b, 2c. Each of the chuck arms 2a, 2b, 2c has the same shape and structure, and is assembled from an arm portion 20 and a base frame portion 21 when a reference numeral is given to one chuck arm 2a.

  The arm portion 20 is formed by bending a horizontal axis portion 20a on the front end side and left and right vertical axis portions 20b and 20c bent at right angles in the same direction from both axial ends of the horizontal axis portion 20a from a metal wire. Moreover, it forms so that the front end side of the vertical axis | shaft parts 20b and 20c including the horizontal axis | shaft part 20a may be exhibiting the vertically long U-shape curved in the circular arc shape corresponding to the spherical surface of a glass sphere.

  As shown in FIG. 2, the base frame portion 21 is continuously connected to the inner and outer holding plates 21a and 21b sandwiched by the arm portion 20 on the shaft end side and fixed to the lower side of the holding plates 21a and 21b. Each of which is formed from a metal plate material, each of which includes a frame substrate 21c that bends in a lateral U shape and a reinforcing plate 21d that is screwed to the upper side of the frame substrate 21c from the lower side of the holding plates 21a and 21b. Has been.

  Around the side surface near the tip of the holder 3, three bracket portions 30 (see FIG. 2) are attached at regular intervals. A frame substrate 21c of the base frame portion 21 is pivotally attached to each bracket portion 30 with a support pin 21e (see FIG. 1). The bracket portion 30 is a relative U-shape that can be fitted in the U-shape of the frame substrate 21c, and is fixed to the side surface of the holder 3 with press-fit pins 31 (see FIG. 2).

  The base frame portion 21 is mutually supported by tension coil springs 22a, 22b, and 22c as shown in FIG. Each of the tension coil springs 22a, 22b, and 22c is stretched between side portions of the holding plates 21a and 21b adjacent to each other above the pivot position by the support pin 21e (see FIG. 1). In addition, a stopper ring 32 that receives the base frame portion 21 is fitted and fixed around the holder 3 so that the standing postures of the chuck arms 2a, 2b, and 2c can be kept upright.

  In addition to the arm portion 20 and the base frame portion 21 described above, tension coil springs 22a, 22b, and 22c are included, and the chuck arms 2a, 2b, and 2c face the curved distal end side of the arm portion 20 in the surrounding direction of the glass bulb. The holder 3 is assembled at regular intervals around the side surface near the tip. Further, the length is set to be a vertically long one from the pivot position by the support pin 21e to the tip end side of the arm portion 20 up to the spherical position close to the base of the large-diameter glass sphere.

  In addition to the above-described parts, a non-slip ring pad 4 for receiving the top surface of the glass bulb is disposed on the cylinder end side of the holder 3. The ring pad 4 (see FIG. 2) is formed by attaching an elastic ring 40 to the end surface of the cylinder 41. A cylindrical slide cylinder 42 is provided so as to extend upward from the cylinder of the holder 3, and is attached to the cylinder end side of the slide cylinder 42 so that the height can be adjusted according to the size of the glass bulb. The receiving cylinder 41 has the same diameter as the holder 3 and is fitted and fixed to the outside of the slide cylinder 42.

  The slide cylinder 42 includes an extension coil spring 43 that urges and supports the holder 3 so as to extend upward from the inside of the holder 3, and a tightening bolt 44 that can be screwed or screwed back to the side of the slide cylinder 42 from the side of the holder 3. Are assembled. The extension coil spring 43 is compressed and held between a stop seat 47 that is fitted into the support shaft 46 of the receiving seat 45 that is fitted and fixed within the diameter of the slide cylinder 42 and is fitted and fixed within the diameter of the holder 3. . In addition, a concave groove 48 for receiving the shaft end of the tightening bolt 44 is provided on the side surface of the slide cylinder 42.

The removable exchange apparatus of bulbs such a configuration, when removal of the existing light bulb, until the operator directly under the glass bulb L ₁ remains in the normal state of the chuck device 2 by hand the handle bar 1 (see Figure 1) portable, operating as pushing up the chuck arms 2a, 2b, the chuck device 2 held against the spherical surface of the glass bulb L ₁ the distal end side of 2c in the handle bar 1.

When the chuck tool 2 is pushed up, the chuck arms 2a, 2b, 2c are made of glass from the front end side of the arm portion 20 with the support pin 21e as a fulcrum while extending the tension coil springs 22a, 22b, 22c as shown in FIG. The glass sphere L ₁ is expanded along the spherical surface of the sphere L ₁ , and the glass sphere L ₁ is slid inside the arm portion 20 and received. With this glass spheres L ₁ accepted, it Ategae combined ring pad 4 on the top surface of the glass bulb L _1.

When receiving a bulb _{L 1} is the tension coil spring 22a, 22b, because 22c is stretched between the base frame portion 21 at the bottom side of the respective chuck arms 2a, 2b, 2c, each chuck arms 2a, 2b, 2c Can be easily enlarged greatly from the distal end side of the arm portion 20. Further, over the tip-side arm portion 20 to exhibit a vertical downward U shape which is curved in an arc shape corresponding to the spherical surface of the glass bulb L _1, a wide range with a small contact surface of the circumferential around the glass bulb L ₁ And can be inserted stably.

After acceptance of the glass bulb _{L 1,} each chuck arms 2a as shown in Figure 5, 2b, 2c are tension coil springs 22a, 22b, proximate displaced 22c, mouthpiece _{L 2} of the glass bulb _{L 1} tip side of the arm portion 20 is Hasamikomeru stably and reliably the bulb L ₁ over to a spherical surface near to.

From the grip state of the glass bulb L ₁ by the chuck device 2, when the operator manipulates the shaft turning the handle bar 1 in reverse screw direction, the glass bulb L ₁ each chuck arms 2a, 2b, is sandwiched reliably by 2c ring pad from where are slip at 4, removal of the entire bulb of the cap L ₂ are returned easily threaded from the socket. Thereafter, the handle bar 1 is pulled down while the light bulb is held by the chuck tool 2 and the light bulb is carried to the hand, so that it may be removed from the chuck tool 2.

When installing a new light bulb, the glass bulb of the new light bulb is gripped by the chuck tool 2 and carried to the ceiling socket position with the handle bar 1 and screwed with the handle bar 1 with the base aligned with the socket. That's fine. During this screwing operation, the glass bulb L ₁ each chuck arms 2a, 2b, together with being sandwiched stably and reliably at 2c, can be easily screwed attachment from where are slip ring pad 4.

When the handle bar 1 is pulled down after the new light bulb is attached, each chuck arm 2a, 2b, 2c extends the tension coil springs 22a, 22b, 22c and extends the arm portion around the support pin 21e as a fulcrum as in the case of removing the existing light bulb. to expanding along the spherical surface of the glass bulb L ₁ from the tip side of the 20, take off the chuck device 2 easier than glass bulb L _1.

When replacing a small bulb of glass spheres, when loosening the bolt 44 tightened by gripping the bulb l ₁ of the new bulb into the chuck device 2 as shown in Figure 6, the slide cylinder 42 is the glass ring pad 4 in extension coil spring 43 until Ategau the top surface of the sphere l ₁ extend out above the inner cylinder of the holder 3. After the slide cylinder 42 extends, the tightening bolt 44 is screwed to set the ring pad 4 to a height corresponding to the glass bulb having a small diameter.

  Since the new light bulb is once removed from the chuck device 2 from the initial setting of the chuck device 2, and the chuck device 2 is carried to the direct part of the existing light bulb with the handle bar, the old and new light bulbs can be attached and detached as described above.

  The above-described embodiment is configured to be compatible with several types of light bulbs with different glass bulb diameters. However, the chuck arm is aligned with a glass bulb of a predetermined diameter and the ring pad is omitted, so that it is a dedicated type for a specific light bulb. Can also be configured. Although the case where three chuck arms are provided has been described, four chuck arms may be provided.

It is a side view which shows the attachment / detachment exchange instrument of the light bulb which concerns on this invention. It is sectional drawing which shows the instrument of FIG. It is a top view which shows the instrument of FIG. It is explanatory drawing which shows the removal initial procedure of the light bulb by the instrument of FIG. It is explanatory drawing which shows the removal procedure of the light bulb following the initial procedure of FIG. It is explanatory drawing which shows the removal initial procedure of the small diameter light bulb of the glass bulb | ball by the instrument of FIG.

Explanation of symbols

L ₁ , 1 ₁ Glass ball L ₁ , 1 ₁ Cap 1 Handle bar 2 Chuck 2a, 2b, 2c Chuck arm 20 Arm part 21 Base frame part 22a, 22b, 22c Tension spring 3 Holder 30 Bracket part 4 Ring pad 42 Slide Tube 43 Extension spring 44 Tightening bolt

Claims (4)

A light bulb attaching / detaching / replacement device provided on the tip side of a handle bar for rotating a chuck for gripping a glass bulb of a light bulb by screwing or unscrewing a base,
A chuck arm comprising a vertically long U-shaped arm portion whose front end is curved in an arc shape corresponding to the spherical surface of a glass sphere, and a laterally U-shaped base frame portion that holds the arm portion on the shaft end side With at least three
A bracket part that fits in the U-shape of the base frame part is provided on the side surface near the tip of the handle bar, and the base frame part is pivotally attached to the bracket part by a support shaft, and the side adjacent to the base frame part above the pivot position The base frame parts are tensioned and supported by a tension spring that spans between the parts, and the chuck arms are assembled at regular intervals around the side surface near the tip of the handle bar with the tip side of the arm part facing the glass bulb. A light bulb attaching / detaching / replacement device comprising a chuck device.   A cylindrical holder is fitted and fixed to the tip of the handle bar, and each chuck arm is assembled at regular intervals around the side near the tip of the holder, and a non-slip ring pad for receiving the top surface of the glass ball is attached to the holder. The light bulb attaching / detaching / replacement device according to claim 1, wherein the light bulb attaching / detaching / replacing device is disposed on a tube end side.   Assemble a vertically long chuck arm with the tip end side of the arm section extending to the spherical surface near the base of the large glass ball at regular intervals around the side surface near the tip of the holder, and extend the cylindrical slide cylinder upward from the inside of the holder cylinder. 3. A non-slip ring pad for receiving the top surface of the glass bulb is provided on the tube end side of the slide barrel so that the height can be adjusted according to the size of the glass bulb. Detachable bulb replacement device described in 1. A cylindrical slide cylinder can be extended upward from the inside of the holder cylinder with an extension spring, and a tightening bolt that sets the extension length of the slide cylinder is screwed or screwed from the side of the holder toward the side of the slide cylinder. 4. A non-slip ring pad for receiving the top surface of the glass bulb is attached to the tube end side of the slide tube, the height of which can be adjusted according to the size of the glass bulb. Detachable bulb replacement device described in 1.

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