JP6949355B2 - Support structure of the supported body - Google Patents

Description

The present invention has a support structure for a supported body such as a support such as a support column, a support arm, or a universal arm, in which a supported body such as a fluorescent lamp, an illumination lamp, an LED, a magnifying glass, or a microscope lens is cantilevered. Regarding.

For assembly and inspection of precision parts, surgery in the medical field, and simulated practice, a support structure with a lighting lamp placed around the magnifying glass is used to support it with a cantilever. There is a magnifying glass stand that makes it easy to work under lighting. (See, for example, Patent Document 1).

In the magnifying glass stand shown in Patent Document 1, a support column is erected on a stand integrated with a work table, a support arm is vertically attached to the support column, and a support arm projecting horizontally from the support arm is attached to the tip of the support arm. A magnifying glass unit that integrally covers a magnifying glass using a circular convex lens and an annular illuminating lamp that surrounds the outer periphery of the magnifying glass with a lamp shade is supported by using a support structure.

The above-mentioned support arm corresponds to the support of the present invention, and the magnifying glass unit corresponds to the supported body of the present invention. A U-shaped retainer is fixed to the tip of the support arm, and one side of the outer peripheral surface of the lamp shade. A plate-shaped mounting boss portion is projected from the end, and the mounting boss portion is inserted between a pair of parallel holding pieces of the retainer, and a support with a knob is attached to these mounting boss portions and the pair of holding pieces. A shaft screw was screwed in to form a support structure for the magnifying glass unit, and when the support shaft screw was loosened, the magnifying glass unit could be rotated around the support shaft screw, and the support shaft screw was screwed in. In some cases, the magnifying glass unit can be moved to an arbitrary position around the support shaft screw to enhance the convenience of the magnifying glass stand, and the magnifying glass unit is supported by a cantilever that occupies a small space, thereby supporting the work table. A wider work space can be secured around it.

Japanese Patent No. 4241971

In the magnifying glass stand shown in Patent Document 1, the position of the magnifying glass unit is frequently changed (angle changed) depending on the work content, and the loosening operation and the tightening operation of the support shaft screw are repeated each time the change is made. Since this magnifying glass stand has a structure that supports the magnifying glass unit with a cantilever as described above, the entire load of the magnifying glass unit acts on one point of the support structure, so that the support shaft screw is considerably tightened. It takes power.

For this reason, when the support shaft screw is strongly tightened, the tip side of both holding pieces is pushed inward from the parallel, and the holding piece, the mounting boss, the head of the support shaft screw, etc. are in a so-called one-sided contact state, and the support shaft screw The tightening force may not be sufficiently transmitted to the holding piece or the mounting boss, and the magnifying glass unit may not be supported securely. This will hinder the support of the mirror unit itself.

Furthermore, when the retainer of the support arm and the mounting boss of the lamp shade are made of metal, if the position change operation of the magnifying glass unit is repeated frequently, both holding pieces of the retainer and the mounting boss are twisted and wear debris is generated. Not only does it stain the area around the magnifying glass stand, but it also accelerates the wear of the support structure. Further, even if the retainer of the support arm and the mounting boss portion of the lamp shade are made of synthetic resin, there is a risk that the holding piece and the mounting boss portion may come into contact with each other, and the holding piece or the mounting boss portion may be made of metal. Since it is not possible to apply such a strong tightening force, it is not suitable for supporting a heavy magnifying glass unit, and the degree of freedom in design is impaired.

The present invention has been made in the context of such circumstances, and an object of the present invention is to apply an excessive load to a holding piece, a mounting boss portion, and a support shaft screw, which are supporting structures of a support and a supported body. The supported body can be reliably and easily rotated or fixed to an arbitrary position around the support shaft screw, and the degree of freedom in design can be improved regardless of the material of the support structure. The purpose is to provide a support structure for the body.

In order to achieve the above object, the support structure of the supported body of the present invention has a pair of parallel holding pieces projecting from either the tip of the support or the outer end of the supported body, and the other. A male screw having a mounting boss portion sandwiched between a pair of sandwiching pieces, a shaft portion, a head formed on one end side of the shaft portion, and a screw portion formed on the other end side of the shaft portion. The shaft portion of the male screw of a support shaft screw composed of a female screw attached to the screw portion of the male screw is inserted from one holding piece into the mounting boss portion and the pair of holding pieces, and the shaft portion protrudes from the other holding piece. The female screw is screwed to the threaded portion, and when the supporting shaft screw is loosened, the supported body can be rotated around the supporting shaft screw, and when the supporting shaft screw is screwed in, the supported body can be rotated. In the support structure of the supported body in which the supported body is cantilevered at an arbitrary position around the support shaft screw, the supported body is supported by the support shaft screw on the tip end side of the pair of holding pieces. While supporting it, an adjusting screw for retightening was screwed between the base end sides of the pair of holding pieces, and the supporting shaft screw was screwed in so that the tip side of the holding piece and the mounting boss portion touched each other due to the tightening force. At that time, it is characterized in that the adjusting screw for retightening is screwed in and the base end side of both holding pieces is pulled toward each other by the tightening force so that both holding pieces and the mounting boss portion come into contact with each other.

Further, in the support structure of the supported body of the present invention, the pair of holding pieces and the mounting boss portion are each made of metal, and a non-metal washer is interposed between the pair of holding pieces and the mounting boss portion, respectively. When the adjusting screw is screwed in, the pair of holding pieces, the mounting boss portion, and the washer can be brought into contact with each other.

In the support structure of the supported body of the present invention, the support shaft screw is located on the tip end side of both holding pieces, and the adjusting screw is located on the base end side of both holding pieces. By loosening or tightening the support shaft screw located on the tip side of the support body, the supported body rotates around the support shaft screw or is fixed at a desired position (angle). When fixing the supported body, it is not necessary to tighten the adjusting screw when both holding pieces are parallel and the holding piece, the mounting boss, the head of the support shaft screw, etc. are in contact with each other without any gap. Is simply bridged over both holding pieces and does not give a tightening force to the base end side of the holding pieces.

In addition, if the supported body has a considerable weight, the holding piece, the mounting boss, or the supporting shaft screw has a manufacturing error, or if these parts are worn out, the tip of both holding pieces is tightened by tightening the supporting shaft screw. The sides may tilt inward rather than parallel, and the holding piece, mounting boss, head of the support shaft screw, etc. may be in a so-called one-sided contact state, but in this case, on the base end side of both holding pieces. By retightening the position adjusting screw, the base end sides of both holding pieces are attracted to each other, and the entire holding pieces of both sides are parallel or as close to parallel as possible, and the holding pieces, the mounting boss, and the head of the supporting shaft screw are brought closer to each other. Touch the parts, etc. without any gaps. By this surface contact, the tightening force of the support shaft screw is transmitted to both holding pieces and the mounting boss without loss, so that the supported body can be securely fixed even if the tightening force of the support shaft screw is not strong. Become.

Further, the pair of holding pieces and the mounting boss portion are formed of metal, and a non-metal washer is interposed between both holding pieces and the mounting boss portion, respectively, and when the adjusting screw is tightened, the pair of holding pieces is held. By bringing the piece, the mounting boss portion, and the non-metal washer into contact with each other, the position of the supported body is frequently changed, and even if the support shaft screw loosening operation and tightening operation are repeated each time, the holding piece Wear powder is less likely to be generated from the mounting boss, and a stronger tightening force can be obtained.

According to the present invention, it is excellent in operability when fixing the supported body, and is covered without giving an excessive load to the holding piece, the mounting boss portion, and the support shaft screw, which are the supporting structures of the supported body and the supported body. Not only can the support be reliably and easily rotated or fixed, but the degree of freedom in design can be improved regardless of the material of the support structure. In addition, the durability can be improved because the parts are prevented from being twisted together. Further, since the tightening force of the support shaft screw is effectively applied to the holding piece and the mounting boss portion without loss, it can be applied to a heavy supported body.

Further, the pair of holding pieces and the mounting boss portion are formed of metal, and a non-metal washer is interposed between both holding pieces and the mounting boss portion, respectively, and when the adjusting screw is retightened, the pair of holding pieces And the mounting boss and the non-metal washer are brought into contact with each other without a gap, so that the position of the supported body is changed (angle is changed) frequently, and each time the support shaft screw is loosened and tightened repeatedly. However, since the twisting of the holding piece and the mounting boss is suppressed, abrasion powder is less likely to occur, and even if the support shaft screw is tightened strongly, the twisting of the holding piece and the mounting boss is suppressed, so it fits smoothly. You can operate the feeling. In addition, it is possible to support an even heavier supported body.

It is sectional drawing of the main part of the support structure of the magnifying glass stand which shows one embodiment of this invention. It is a perspective view of the magnifying glass stand which shows one embodiment of this invention. It is a top view of the support structure of the magnifying glass stand and the magnifying glass unit which show one embodiment of this invention.

Hereinafter, an example in which the present invention is applied to a magnifying glass stand will be described with reference to the drawings.

As shown in FIG. 2, in the magnifying glass stand 1, a support column 4 is erected on the rear portion of a pedestal 3 integrated with the work table 2, and a support arm 5 serving as a support of the present invention is attached to the support arm 4 as an arm fixing knob. The magnifying glass unit 7, which is the supported body of the present invention, is attached to the tip of the support arm 5 which is vertically mounted by using the work table 2 and projects horizontally upward toward the work table 2, via the support structure 8. Cantilevered support.

A metal retainer 10 is projected from the tip of the support arm 5, and the retainer 10 has a connecting piece 10a fixed to the tip of the support arm 5 and above the work table 2 from both ends of the connecting piece 10a. It is formed in a U shape with a pair of holding pieces 10b and 10c protruding in parallel to.

First screw insertion holes 12a and 12b for mounting the support shaft screws 9 are coaxially bored on the tip side of the holding pieces 10b and 10c, and on the base end side of the holding pieces 10b and 10c. A second screw insertion hole 14 and a female screw hole 15 for mounting the adjusting screw 13 are coaxially bored.

The magnifying glass unit 7 is formed by covering a magnifying glass LE using a circular convex lens and an annular illumination lamp (not shown) that surrounds the outside of the magnifying glass LE with a metal lamp shade 16 in a ring shape. A plate-shaped mounting boss portion 16a is projected in the vertical direction at the rear end of the shade 16, and a screw insertion hole 17 for mounting the support shaft screw 9 is bored in the mounting boss portion 16a.

As shown in FIGS. 1 and 3, the magnifying glass unit 7 is rotatably cantilevered and supported by the retainer 10 of the support arm 5 by using the support shaft screw 9. The support shaft screw 9 includes a male screw 11 including a shaft portion 11a having a threaded portion at the tip and a hexagonal head portion 11b at the base end of the shaft portion 11a, a collar 18 mounted on the tip end side of the shaft portion 11a, and the shaft portion. It is composed of a knob 19 which is a female screw that can be screwed to 11a. Further, as the adjusting screw 13, a general machine screw having a head portion 13b at the base end of the shaft portion 13a is used, and there is no particular combination configuration with other parts such as the support shaft screw 9.

As shown in FIG. 1, the above-mentioned support structure 8 is formed on the retainer 10 at the tip of the support arm 5, the mounting boss portion 16a of the lamp shade 16 of the magnifying glass unit 7, and the tip side of the holding pieces 10b and 10c of the retainer 10. Supporting shaft screws 9 and washers 20 and 20 that rotatably cantilever support the holding pieces 10b and 10c and the mounting boss portion 16a, and adjusting screws 13 bridged to the base end side of the holding pieces 10b and 10c. Includes.

As shown in FIGS. 1 and 3, in order to attach the magnifying glass unit 7 to the retainer 10 of the support arm 5, the attachment boss portion 16a of the lamp shade 16 is inserted between the holding pieces 10b and 10c of the retainer 10. The first screw insertion holes 12a and 12b of the holding pieces 10b and 10c and the screw insertion holes 17 of the mounting boss portion 16a are aligned coaxially, and further, in the gap between the holding pieces 10b and 10c and the mounting boss portion 16a. Each of the washer 20 made of synthetic resin is interposed, the shaft portion 11a of the male screw 11 is inserted from the first screw insertion hole 12a of one holding piece 10b, and the shaft portion 11a of the male screw 11 protrudes from the first screw insertion hole 12b of the other holding piece 10c. The collar 18 is externally attached to the tip of the shaft portion 11a, and the knob 19 is screwed to the outside thereof. The boss portion 16a and the washers 20 and 20 are sandwiched.

As described above, the magnifying glass unit 7 is cantilevered by the retainer 10 of the support arm 5 using the support shaft screw 9, and can be rotated around the support shaft screw 9 by loosening the screwing of the knob 19. After rotating to a desired position (desired angle), the knob 19 is screwed into the position to fix the knob 19. In the screwing or loosening operation of the knob 19 described above, the shaft portion 11a and the hexagonal head 11b are only moved to be pulled in the knob direction or returned in the opposite knob direction, and the shaft portion 11a and the hexagonal head 11b are moved. Does not rotate.

Reference numeral 10d shown in FIGS. 2 and 3 is a protrusion formed by projecting from the holding piece 10b of the retainer 10 in order to hold the hexagonal head 11b of the male screw 11 non-rotatably, and the protrusion 10d is formed. As a result, the male screw 11 can be reliably pulled in the knob direction or returned in the anti-knob direction without rotating.

The adjusting screw 13 is obtained by inserting the shaft portion 13a into the second screw insertion hole 14 of one holding piece 10b and screwing the shaft portion 13a into the female screw hole 15 of the other holding piece 10c, thereby holding both holding pieces 10b. , 10c is bridged in parallel with the support shaft screw 9.

In this state, when the holding pieces 10b and 10c tightened to the support shaft screw 9 are parallel to each other and the holding pieces 10b and 10c and the mounting boss portions 16a and washers 20 and 20 are in contact with each other without a gap, the adjusting screw. Reference numeral 13 denotes a state in which the two holding pieces 10b and 10c are simply bridged to each other, and no tightening force is applied to the base end side of the holding pieces 10b and 10c.

Further, if there is a manufacturing error in the holding pieces 10b, 10c, the mounting boss portion 16a, and the washers 20, 20 or the wear progresses, the tip side of the holding pieces 10b, 10c tilts inward, and the holding pieces 10b, 10c and the mounting boss portion 16a , A so-called one-sided contact state occurs due to an inclined gap between the washers 20 and 20, but in this case, the adjusting screw 13 is screwed in to tighten the base end side of the holding pieces 10b and 10c to the base end side. Narrow the interval as well as the tip side. As a result, the intervals between the holding pieces 10b and 10c are returned to parallel again, and the holding pieces 10b and 10c and the mounting boss portions 16a and the washers 20 and 20 are in a surface contact state without any gaps.

According to the support structure 8 of this embodiment, even if the screwing force of the knob 19 is normal, the holding pieces 10b and 10c easily and surely hold the mounting boss portion 16a, so that the magnifying glass is the supported body. Not only can the unit 7 be easily and surely cantilevered, but also a heavier magnifying glass unit 7 can be supported, which improves the degree of freedom in design. Further, it is excellent in operability when fixing or rotating the magnifying glass unit 7. Further, since the knob 19 is not subjected to an excessive screwing force, the durability of the component parts is improved.

Further, a pair of holding pieces 10b and 10c and a mounting boss portion 16a are formed of metal, and washers 20 and 20 made of synthetic resin are interposed between both holding pieces 10b and 10c and the mounting boss portion 16a, respectively. Therefore, even if the knob 19 is strongly tightened, there is no twist between the holding pieces 10b and 10c and the mounting boss portion 16a, and a smooth and soft fit can be obtained. Further, since wear powder is less likely to be generated from the holding pieces 10b and 10c and the mounting boss portion 16a, the magnifying glass stand 1 and its surroundings are not contaminated, and the magnifying glass unit 7 which is even heavier can be supported. can.

In the above-mentioned adjustment operation using the support structure 8, the holding pieces 10b and 10c, the mounting boss portions 16a, and the washers 20 and 20 are worn, and the holding pieces 10b and 10c and the mounting boss portions 16a and the washer 20 are worn. It can be repeated every time 20 hits one side.

Further, in the above-described embodiment, the shaft portion of the support shaft screw and its head are not rotated, and the magnifying glass unit, which is the supported body, is rotated and fixed by the rotation operation of the knob. In the present invention, the support shaft screw may be formed in a shape in which a large-diameter knob is provided on the head of the shaft portion, and the knob and the shaft portion may be rotated integrally.

Further, in the above-described embodiment, the support arm has been described as having a rod shape protruding horizontally from the support column, but the present invention can also be applied to a free arm type support arm in which two arms are swingably connected. Is.

The present invention can be applied to a magnifying glass stand shown in a morphological example, a desk lighting stand using a fluorescent lamp or an LED lamp, a microscope, or a support structure having a structure in which a supported object is cantilevered.

1 magnifying glass stand, 2 work table, 3 pedestal, 4 columns, 5 support arm (support of the present invention), 6 arm fixing knob, 7 magnifying glass unit (supported body of the present invention), 8 support structure, 9 Support shaft screw, 10 retainer, 10a connecting piece, 10b holding piece, 10c holding piece, 11 male screw, 11a shaft part, 11b hexagonal head, 12 magnifying glass stand, 12a first screw insertion hole, 12b first screw insertion hole, 13 Adjusting Screw, 13a Shaft, 13b Head, 14 Second Thread Insertion Hole, 15 Female Thread Hole, 16 Lamp Shade, 16a Mounting Boss, 17 Thread Insertion Hole, 18 Collar, 19 Knob (Female Screw of the Present Invention), 20 washer

Claims (2)

A pair of parallel holding pieces are projected from either the tip of the support or the outer end of the supported body, and a mounting boss portion to be sandwiched between the pair of holding pieces is projected from the other, and a shaft portion is provided. Of the male screw of a supporting shaft screw consisting of a male screw having a head formed on one end side of the shaft portion and a screw portion formed on the other end side of the shaft portion, and a female screw attached to the screw portion of the male screw. The female screw was screwed into the screw portion protruding from the other holding piece while inserting the shaft portion from one holding piece into the mounting boss portion and the pair of holding pieces, and the supporting shaft screw was loosened. In this case, the supported body can be rotated around the support shaft screw, and when the support shaft screw is screwed in, the supported body is cantilevered at an arbitrary position around the support shaft screw. In the support structure of the supported body as described above,
The screwed an adjusting screw for tightening between the base end side of the pair of holding pieces while supporting the tip end of the pair of clamping pieces to be support by the support shaft screw,
When the support shaft screw is screwed in and the tightening force causes the tip end side of the holding piece and the mounting boss to come into contact with each other, the adjusting screw for retightening is screwed in and the tightening force is applied to the base end side of the holding piece. A support structure for a supported body, which is attracted to each other so that the holding piece and the mounting boss portion come into contact with each other. The pair of holding pieces and the mounting boss portion were each made of metal, a non-metal washer was interposed between the pair of holding pieces and the mounting boss portion, and the adjusting screw for retightening was screwed. The supported body according to claim 1, wherein the base end side of the holding piece is attracted to each other by the tightening force, and the pair of holding pieces, the mounting boss portion, and the washer are brought into surface contact with each other. Support structure.

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