JP2006014467A - Bottom protecting device of telescopic type expansion work rod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a decorative cap which covers the aperture bottom of a thickest hand straight rod from being early damaged owing to the dragging and moving on a road surface. <P>SOLUTION: In the telescopic type expansion work rod (A) in which the decorative cap (C) made of a hard synthetic resin is covered integrally with the aperture bottom of the thickest hand straight rod (P1), a pair of left and right ground rolling wheels (20a)(20b) made of the hard synthetic resin or rubber are supported to the decorative cap (C). And, the separate base end of the pedal frame (B) bent and formed in a substantially U shape from one metal wire material is inserted into and locked to the outer peripheral surface of the decorative cap (C). Thus, the pedal frame (B) is set so that a rotating operation can be performed up and down only at about 90 degrees (θ) of a folding state to be fitted in the outer peripheral surface of the hand straight rod (P1) and a stepping grounding state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a telescope-type telescopic work bottom protection device for use in collecting work for distribution lines, communication cables, trolley lines, and other overhead lines, and for picking up objects at high places or far away that cannot be reached by human hands.

  Telescopic telescopic work rods in which a plurality of straight rods made from FRP are sequentially connected by joints are well known. For electrical installation work to prevent drooping when the overhead wire is extended, it has a total length of about 6 m. Is the most used.

  A hard synthetic resin cosmetic cap having a substantially U-shaped cross section is integrally attached to the bottom of the opening of the thickest hand ridge that forms such a telescopic work basket.

  However, as a method of handling the telescopic work rod, when moving to change its work place, despite being instructed to temporarily shorten and carry it, the operator can relax the joints one by one, It is very annoying to re-tighten and repeat the expansion / contraction operation, so in the stretched and long state, drag the bottom of the thickest (heavy) straight hand to the road surface and move the work place. ing. As a result, there are many cases in which early damage accidents and dropping accidents of the cosmetic cap due to rubbing against the road surface frequently occur.

  In this regard, as an emergency measure, the cover (1) cut and bent from the metal plate as shown in FIG. 13 is also fixedly covered and fixed to the damaged synthetic resin decorative cap. Even so, as long as the bottom of the thick handed nails is still dragged to the road surface, it is inevitable that the metal cover (1) will be unsightly damaged or fallen off early on.

  In addition, since the metal cover (1) is improperly deformed, there is a danger to the operator's operator, and a large discomfort is generated due to rubbing against the concrete road surface. There is also a problem that becomes difficult to use.

  The present invention aims to drastically solve such problems, and in order to achieve the object, in claim 1, a hard synthetic resin cosmetic cap is attached to the opening bottom of the thickest hand towel. In an integrated telescopic telescopic work rod,

  A rolling wheel for grounding made of hard synthetic resin or rubber is pivotally supported on the decorative cap.

  In the second aspect, as a configuration dependent on the first aspect, a pair of left and right rolling wheel relief notches or one rolling wheel relief arranged in parallel at a portion eccentric from the vertical center line of the decorative cap to either the front or the rear. Forming a notch and a bearing boss that remains relatively to the rolling wheel relief notch,

  A pair of left and right rolling wheels or one rolling wheel corresponding to the inside of the rolling wheel escape notch is pivotally supported by a horizontal axle passing through the bearing boss,

  Similarly, a stable leg seat for grounding that can maintain the telescopic work rod in a substantially vertical standing state in combination with the rolling wheel from the portion eccentric to the other side of the cosmetic cap is integrally projected downward. Features.

  Moreover, in Claim 3, as a structure dependent on the said Claim 1 or 2, while cutting out the fitting ditch | groove to a hand ridge in the upper half part of a cosmetic cap,

  Similarly, an air release hole communicating with the fitting groove is formed in the remaining lower half portion of the decorative cap along the vertical center line of the decorative cap.

  Further, in claim 4, as a configuration subordinate to claim 1, 2, or 3, the separation base end portion of the pedal frame bent in a substantially U shape from one metal wire is parallel to the axle of the rolling wheel. As a pair of left and right pivots, by inserting and locking to the outer peripheral surface of the makeup cap,

  The pedal frame is set so that it can be rotated up and down by about 90 degrees between a folded state in which the pedal frame is fitted to the outer peripheral surface of the hand and a stepping grounding state.

  According to the above configuration of claim 1, the synthetic cap or the synthetic cap made of hard synthetic resin, which is integrally adhered to the bottom of the opening of the thickest hand straight rod forming the telescopic telescopic work basket, is also made of hard synthetic resin or rubber. The grounding rolling wheel is pivotally supported, so that when changing the work place, the grounding rolling wheel makes the road surface easy and different even if the telescopic work rod is extended. It can be moved without generating chords, will not cause damage to the cosmetic cap as in the past, can remain forever, and is light in weight, making it convenient for use. And outstanding durability.

  In particular, if the above configuration of claim 2 is adopted, the rolling wheel escape notch provided to the decorative cap functions as a fender of the rolling wheel, and the rolling wheel protrudes from the outer peripheral surface of the decorative cap. Therefore, there is no risk that the sleeves of clothes will be caught on the rolling wheels during work, or the rolling wheels will collide with other objects while moving to the work place. The seat is very convenient because the telescopic work rod can be kept stationary in a substantially vertical standing state.

  In addition, if the above configuration of claim 3 is adopted, an air removal hole reaching from the fitting groove to the bottom face of the cosmetic cap to the bottom is formed so as to penetrate along the vertical center line of the cosmetic cap. Therefore, the air can be smoothly pulled out from the inside of the telescopic work rod, and there is an effect that the telescopic operation of the work rod can be easily performed without resistance.

  Furthermore, if the said structure of Claim 4 is employ | adopted, while raising the pedal frame to the outer peripheral surface of the hand straight rod in a telescopic work rod in the folding state which fits, the movement of a work place can be performed conveniently, With the pedal frame in a prone state where the pedal frame is grounded, the operator can step and fix the pedal frame, so that there is an effect that the telescopic operation of the telescopic work rod can be quickly and easily performed using both free hands.

  Hereinafter, the specific configuration of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2 showing the entire extended state and shortened state of the telescopic work rod, (P1), (P2), and (P3) are relative to each other. A plurality of (three in the illustrated example) straight rods fitted in a stretchable manner. These adjacent pairs are sequentially connected via joints (J1) (J2), for example, about 6 m. A multi-stage telescopic telescopic work rod (A) having a full length will be finished.

  The above-mentioned straight bowls (P1), (P2) and (P3) having different thicknesses are made of prepregs each made of a glass fiber cloth or other FRP cloth impregnated with a thermosetting resin such as phenol resin or epoxy resin. The cross prepreg is heat-cured to form a hollow single tube formed into a laminated state having a cross-sectional circle or a regular polygonal cross-section corresponding to each other. ) As a partially thick laminated state.

  In addition, the joints (J1) and (J2) mentioned above are used as the expansion / contraction operation ring of the expansion / contraction work rod (A), and a pair of adjacent straight rods (P1) (P2) (P3) are tightened and locked. Since it consists of a mechanism for releasing the lock state, it is a matter of course that these thicknesses also change correspondingly with the above-mentioned straight plate (P1) (P2) (P3).

  (11) is a fixed bush that covers the top of the opening of the narrowest straight end (P3). To this, an overhead wire receiving hook (12) such as a communication cable or a distribution line is screwed in a detachable and replaceable manner from above. Jointly concluded. On the other hand, the overhead wire receiving hook (12) is merely an example of the extension work of the overhead wire as an attachment of the telescopic work rod (A), and a cutter, a camera, or other work tools are attached and used instead. Sometimes.

  On the other hand, (C) is a cosmetic cap that covers the opening bottom of the thickest hand ridge (P1), and is integrally molded from ABS resin, nylon, or other hard synthetic resin as shown in FIGS. In this case, various colored colors such as red and blue may be applied to the joints (J1) and (J2).

  In other words, the cosmetic cap (C) on the heel has a constant thickness (D) and a constant height (H) that is slightly larger than this, as a cylindrical shape substantially corresponding to the above-mentioned direct nails (P1). The fitting groove (13) having a constant depth (S) cut out in the upper half of the groove is fitted into the bottom of the direct flange (P1) from below as shown in FIGS. The fixing bolt (14) that is screwed in from the direction is attached and integrated to the direct flange (P1). However, the decorative cap (C) can be replaced by removing the fixing bolt (14). (15) is an insertion hole for the fixing bolt (14).

  (16a) and (16b) are a pair of left and right rolling wheel escape notches arranged in parallel, and are eccentric from the vertical center line (OO) of the decorative cap (C) to either the front or rear (front side in the illustrated example). An intermediate portion that is relatively raised with respect to the depression of the flat bottom surface (17) of the cosmetic cap (C). It remains as a bearing boss (18).

  Then, rolling contact wheels (20a) (20b) made of hard rubber, preferably nylon, or other hard synthetic resin are provided at both ends of a horizontal axle (19) passing through the bearing boss (18). ) Are pivotally supported, and the rolling wheels (20a) and (20b) are positioned corresponding to the inside of the relief notches (16a) and (16b) and left and right from the outer peripheral surface of the cosmetic cap (C). Since the rolling wheels (20a) and (20b) do not protrude in the lateral direction, the rolling wheels (20a) and (20b) collide with other objects during the movement of the work place, and the sleeves of clothes and the like are rolling wheels (20a) and (20b) during the work. There is no risk of getting caught. The arcuate ceiling surface of the rolling wheel relief notches (16a) and (16b) functions as a fender of the rolling wheels (20a and 20b).

  Furthermore, the axle (19) has a continuous stepped form with a relatively thick intermediate portion and narrow left and right end portions as shown in FIG. 9, while the center of the rolling wheels (20a) (20b). Screw recesses (21a) and (21b) are notched in the part, and the above-mentioned rolling is performed by screws (22a) and (22b) respectively screwed into the left and right ends of the axle (19) from here. The wheels (20a) and (20b) are restrained in the retaining state. (23a) and (23b) are washers inserted in the screws (22a) and (22b), and (24a) and (24b) are a pair of left and right spacers inserted in the stepped boundary portion of the axle (19). .

  Similarly, (25) protrudes downward from the flat bottom surface (17) integrally at the part eccentric from the vertical center line (OO) of the cosmetic cap (C) to the other side (the rear side in the figure). This is a stable grounding seat for grounding, and in combination with the pair of left and right rolling wheels (20a) and (20b), the telescopic work rod (A) is maintained in a substantially vertical standing state. By bringing the total of three points of the stable leg seat (25) and the rolling wheels (20a) and (20b) into contact with the road surface (G), the telescopic work rod (A) can be kept stationary in a stable standing state. It has become.

  In this respect, in the illustrated example, one of the stable leg seats (25) shaped in a substantially crescent shape as viewed from the bottom is protruded from the flat bottom surface (17) of the cosmetic cap (C), but performs the above function. As long as the contour shape, the number, and the arrangement of the stable leg seat (25) can be freely selected.

  (26) is along the vertical center line (OO) of the cosmetic cap (C) from the groove bottom surface of the fitting concave groove (13) cut out in the upper half of the cosmetic cap (C). This is an air vent hole that penetrates to the flat bottom surface (17). By removing the air from the inside of the telescopic work rod (A), the telescopic operation can be easily performed without resistance of internal pressure. At the same time, the bottom surface (17) of the decorative cap (C) floats by a certain height (h) from the road surface (G) by the grounding stable leg seat (25) and the rolling wheels (20a) (20b). In combination with the fact that it is kept in the position, it is possible to prevent a foreign matter such as muddy water and dust on the road surface (G) from being sucked during the extension operation of the telescopic work rod (A).

  Further, (B) is a pedal bent from a single piano wire or other metal wire material into a U-shape that maintains a spacing (W) substantially corresponding to the constant thickness (D) of the decorative cap (C). The frames, (27a) and (27b) are flat surfaces cut on the outer peripheral surface of the cosmetic cap (C) as a pair of left and right positions corresponding to the inwardly separated base end of the pedal frame (B), Here, a pair of opposing locking holes (28a) and (28b) are distributed.

  Then, the pair of left and right inwardly disconnecting proximal end portions of the pedal frame (B) are forcedly opened once, and by the restoring repulsive force, the corresponding locking holes (28a) (28a) ( 28b) is inserted and locked so as to be freely disengageable from the lateral direction, and the pedal frame (B) is shown in FIG. The folding operation is performed by about 90 degrees (θ) between the folded state in which the fitting is pressed against the outer peripheral surface of the hand straight rod (P1) as shown in FIG. Can be done.

  In this case, as understood from the above description based on the drawings, the pivotal axes (29a) and (29b) of the pedal frame (B) are parallel to the axles (19) of the rolling wheels (20a) and (20b). The U-shaped tip (30) has a certain length (L) from the outer peripheral surface of the decorative cap (C) in the opposite direction (rear side) to the position of the rolling wheels (20a) (20b). Because it is extended only by extension, the operator can step on and fix the ground to the road surface (G), and the telescopic operation of the telescopic work rod (A) can be quickly and easily performed using both free hands. be able to.

  On the other hand, the front end portion (30) of the pedal frame (B) is raised from a horizontal grounding state, and is moved to the working place as a folded state in which the telescopic work rod (A) is fitted to the direct arm (P1). Can be done conveniently.

  In the above-described basic embodiment of FIGS. 1 to 10, the pair of right and left rolling wheels (20a) and (20b) arranged in parallel are pivotally supported on the decorative cap (C) via the axle (19). 11 is advantageous in that the telescopic work rod (A) can be stably rolled along the road surface (G) without fear of lateral swinging in the horizontal direction. As shown in the embodiment, one of the wide rolling wheels (20) of the tread is installed in the middle part of the horizontal axle (19) that passes through the pair of left and right bearing bosses (18a) (18b). You may do it.

  Incidentally, (16) is one rolling wheel escape notch corresponding to the rolling wheel (20), and (31a) and (31b) are notched to the pair of left and right bearing bosses (18a) and (18b). The screw escape groove is the same as that of FIG. 9 of the basic embodiment, and therefore, only the corresponding reference numerals to those of FIG. 9 are entered in FIG. Detailed description is omitted.

  In any case, in the configuration of the present invention, the hard synthetic resin cosmetic cap (C) that covers the thickest hand straight collar (P1) of the telescopic telescopic work basket (A) is made of a hard synthetic resin or rubber. Since the grounding rolling wheels (20), (20a) and (20b) are pivotally supported, the telescopic work rod (A) is of course shortened as shown in FIG. In addition, even if this is in the extended state as shown in FIG. 12, the work place can be moved easily by the rolling wheels (20) (20a) (20b) of the pedal frame (B). There is no risk of damage to the cosmetic cap (C) or even a drop-off accident, which is useful for improving durability.

  Further, even if the rolling wheels (20), (20a), (20b) of the decorative cap (C) are worn due to long-term use, only this is replaced with a new one quickly and easily on the operator side. As a result, it is no longer necessary to send a telescopic work rod with a damaged cosmetic cap to the manufacturer and repair it by the manufacturer, and it is necessary to interrupt the extension work and other work of the overhead wire during the repair period. It is never done.

FIG. 3 is a half-broken cross-sectional view showing an extended state of a telescopic telescopic work rod according to the present invention. It is a half notched cross-sectional view showing a shortened state of the telescopic work rod. FIG. 2 is a partially enlarged side view of FIG. 1. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is a side view which extracts and shows the bottom part cosmetic cap of a hand nagasaki. FIG. 6 is a plan view of FIG. 5. FIG. 6 is a bottom view of FIG. 5. FIG. 6 is a front view of FIG. 5. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 5. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 6. It is sectional drawing which shows the deformation | transformation embodiment corresponding to FIG. It is a side view of the process of moving an expansion-contraction work rod in an extended state. It is a perspective view which shows the emergency metal cover which covers the conventional bottom part cosmetics cap.

Explanation of symbols

(13) ・ Fitting groove (16) (16a) (16b) ・ Rolling wheel escape notch (17) ・ Bottom surface (18) (18a) (18b) ・ Bearing boss (19) ・ Axle (20) ( 20a) (20b) Rolling wheel (21a) (21b) (31a) (31b) Screw escape groove (22a) (22b) Screw (25) Stabilizing leg seat (26) Air hole ( 28a) (28b) · Locking hole (29a) (29b) · Rotating pivot (30) · Tip (A) · Telescopic work rod (B) · Pedal frame (C) · Cosmetic cap (G) · Road surface ( P1) ・ Hand Naosuke (J1) (J2) ・ Fitting (OO) ・ Vertical centerline of decorative cap

Claims (4)

In the telescopic telescopic work rod (A) in which a decorative cap (C) made of a hard synthetic resin is attached to and integrated with the bottom of the opening of the thickest hand straight bowl (P1),
A telescope type telescopic work basket bottom protecting device characterized in that a grounding rolling wheel (20) (20a) (20b) made of hard synthetic resin or rubber is pivotally supported on the decorative cap (C). A pair of left and right rolling wheel relief notches (16a) and (16b) or one rolling wheel escape in parallel at a position eccentric from the vertical center line (OO) of the decorative cap (C) to either the front or rear. Forming a notch (16) and a bearing boss (18) (18a) (18b) that remains relatively to the rolling wheel relief notch (16) (16a) (16b);
A pair of left and right rolling wheels (20a) (20b) or one rolling wheel (20) corresponding to the inside of the rolling wheel relief notch (16) (16a) (16b) is connected to the bearing boss (18 ) (18a) (18b) is supported by a horizontal axle (19) passing through and horizontally,
Similarly, from the part eccentric to the other side of the cosmetic cap (C), in combination with the rolling wheels (20), (20a) and (20b), the telescopic work rod (A) can be maintained in a substantially vertical standing state. 2. The telescopic telescopic work rod bottom protection device according to claim 1, wherein said stable leg seat (25) is integrally projected downward. While notching the fitting groove (13) to the hand ridge (P1) in the upper half of the cosmetic cap (C),
Similarly, the remaining half of the cosmetic cap (C) has an air vent hole (26) communicating with the fitting groove (13) along the vertical center line (OO) of the cosmetic cap (C). The bottom protective device for a telescopic telescopic work rod according to claim 1 or 2, wherein an opening is formed. A pair of left and right pivots parallel to the axle (19) of the rolling wheels (20) (20a) (20b) are separated from the base end of the pedal frame (B) bent from a single metal wire into a substantially U-shape. 29a) (29b) by inserting and locking the outer peripheral surface of the cosmetic cap (C),
The pedal frame (B) is set so as to be able to be rotated up and down by about 90 degrees (θ) between the folded state in which the pedal frame (B) is fitted to the outer peripheral surface of the hand pallet (P1) and the stepping grounding state. The bottom protecting device for a telescopic telescopic work rod according to claim 1, 2, or 3.

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