JPWO2011104899A1 - Ceiling pendant - Google Patents

Abstract

In the ceiling pendant (2), which is attached in a form suspended from the ceiling (1) and used to install various devices floating from the floor surface, the ceiling pendant comprises a horizontal arm (4) having a horizontal component. The horizontal arm is an elliptical cross section made of carbon fiber reinforced resin. By making the horizontal arm into an elliptical cross section made of carbon fiber reinforced resin, it is possible to provide a ceiling pendant that is light and hardly bends and is not easily affected by vibration.

Description

  The present invention relates to a ceiling pendant.

  A ceiling pendant is known as an apparatus that suspends and holds various apparatuses (for example, a medical power supply apparatus, a medical gas apparatus, an image processing apparatus, an information processing apparatus, and a lighting fixture) from the ceiling. When a ceiling pendant is used, various devices need not be installed directly on the floor. Therefore, the floor surface can be effectively used. Furthermore, accidents that catch the cord / hose are less likely to occur. The apparatus can be prevented from falling. Therefore, it is no exaggeration to say that there is no operating room without a ceiling pendant today. Specific examples of the ceiling pendant are shown in FIGS. The ceiling pendant includes a horizontal arm having a horizontal component and a vertical arm having a vertical component. In addition, a table on which various devices are mounted is provided as required (see FIGS. 3, 4, and 5). Of course, when there is no need to place a device, there is no need for a table.

  Up to now, the ceiling pendant has been made of a light metal material (for example, aluminum or an aluminum alloy (hereinafter simply referred to as Al)). In other words, the ceiling pendant was made of Al in order to reduce the load on the ceiling.

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  Due to the advancement of medical instruments and the increase in inspection items, more instruments will be mounted on the ceiling pendant in the future. When the number of mounted instruments increases and the mounted instruments are concentrated in one place, a large load (rotational moment) acts on the ceiling pendant. As a result, there is a concern that bending may occur. In particular, there is a concern that the horizontal arm of the ceiling pendant may be bent. When the horizontal arm is bent, the table tilts. As a result, the device mounted on the table falls off.

  In order to solve such a problem, it is necessary to improve the mechanical strength of the arm. In order to improve the mechanical strength of the arm, it is conceivable to increase the thickness of the arm. However, increasing the arm thickness increases the weight. As a result, the load on the ceiling increases. Furthermore, vibration is likely to occur with a slight impact. There is concern that the occurrence of vibrations may interfere with the operation.

  Therefore, the problem to be solved by the present invention is to solve the above problems. That is, it is to provide a ceiling pendant that is light in weight, hardly bent, and hardly affected by vibration.

  The above-mentioned problem has been studied with eagerness. As a result, the following has been found. That is, the vertical arm was hardly bent even at the site of the ceiling pendant. In other words, the inventors have realized that the problem of bending is a unique problem that occurs in the horizontal arm.

  By the way, carbon fiber reinforced resin is lightweight and has bending resistance.

  In view of the above, the present inventor has obtained a revelation that the above problem can be solved if the horizontal arm of the ceiling pendant is made of carbon fiber reinforced resin.

  Now, many cables (power cords) are usually built in the arm of the ceiling pendant. If this arm is made of carbon fiber reinforced resin, it can be expected to shield electromagnetic waves generated from the cable. As a result, we have received a revelation that the adverse effects on the electronic equipment installed in the operating room will be reduced.

  The present invention has been achieved based on the above revelation.

That is, the above problem is
In the ceiling pendant that is mounted in a form that hangs from the ceiling and is used to install the device floating from the floor,
The ceiling pendant comprises a horizontal arm having a horizontal component;
The horizontal arm is
Cross-sectional elliptic cylinder,
It is solved by a ceiling pendant characterized by comprising a carbon fiber reinforced resin.

  The subject is the sealing pendant, wherein the ceiling pendant comprises a vertical arm having a vertical component, and the vertical arm is made of a carbon fiber reinforced resin. Solved by pendant.

  The above problem is solved by the ceiling pendant, wherein the ceiling pendant includes a vertical arm having a vertical component, and the vertical arm is made of a light metal. Is done.

  The subject is the ceiling pendant, wherein the ceiling pendant comprises a vertical arm having a vertical component, and preferably the vertical arm and the horizontal arm are connected via a metal connector. The connection form of the metal connecting body and the horizontal arm is such that the metal connecting body is inserted and fitted into the horizontal arm (carbon fiber reinforced resin cross-sectional elliptic cylinder), and the metal A concave groove extending in the circumferential direction is formed on the surface of the insertion fitting portion of the manufactured connecting body, and the concave groove is filled with an adhesive.

  The above-mentioned problem is solved by the above-mentioned ceiling pendant, preferably the horizontal arm is a cross-sectional elliptical cylinder having a long axis in the vertical direction.

  Since the horizontal arm of the ceiling pendant is made of carbon fiber reinforced resin, the problem of bending has been improved. That is, problems such as tilting and slipping of devices due to bending have been improved. As a result, for example, it was possible to reduce the attention required for surgery. In other words, you can concentrate your feelings on surgery. In other words, you can concentrate on surgery.

  Because it is lighter than Al, the load on the ceiling is small.

  Even if electromagnetic waves are generated from the cable built in the horizontal arm, the horizontal arm is made of carbon fiber reinforced resin, so that external leakage of electromagnetic waves is effectively shielded. Therefore, the risk of malfunction of electronic equipment due to leaked electromagnetic waves is reduced.

  The carbon fiber reinforced resin sealing pendant was less affected by vibration than the Al sealing pendant. There is concern that the vibration may interfere with the operation. Also from this point, the sealing pendant of the present invention is preferable.

Illustration of the ceiling pendant according to the present invention Explanatory drawing which shows the structure of the horizontal arm connection part of the ceiling pendant which becomes this invention. Illustration of the ceiling pendant Illustration of the ceiling pendant Illustration of the ceiling pendant

  The present invention is a ceiling pendant. For example, a ceiling pendant installed in an operating room. In particular, it is a ceiling pendant used to hold (install) various devices such as medical devices and lighting devices by floating from the floor surface. It is a ceiling pendant in which power cords (cables) of the various devices are incorporated. One end side (base side) of the ceiling pendant is attached to the ceiling. That is, the ceiling pendant is attached in a form of being suspended from the ceiling. The ceiling pendant includes a horizontal arm having a horizontal component. This horizontal arm has an elliptical cross section. This horizontal arm is, in particular, an elliptical cross section having a long axis in the vertical direction. This elliptical cross section is made of carbon fiber reinforced resin. The ceiling pendant includes a vertical arm having a vertical component. The vertical arm is a cylinder. The vertical arm is made of carbon fiber reinforced resin or light metal (for example, Al). The vertical arm and the horizontal arm are connected via a metal connecting body. The connection between the metal connector and the horizontal arm is a form in which the metal connector is inserted and fitted into the horizontal arm (carbon fiber reinforced resin cross-sectional elliptic cylinder). A concave groove along the circumferential direction is formed on the surface of the insertion fitting portion of the metal connector. The concave groove is filled with an adhesive. For the connection between the vertical arm and the metal connection body, a connection technique between the metal connection body and the horizontal arm is employed. A technique different from the technique for connecting the metal connector and the horizontal arm may be employed.

  This will be described in more detail below.

  FIG.1 and FIG.2 is explanatory drawing of one Embodiment of the ceiling pendant which becomes this invention.

  In each figure, 1 is a ceiling. 2 is a ceiling pendant attached to the ceiling 1. The ceiling pendant 2 has a vertical arm 3 and a horizontal arm 4. The vertical arm 3 has a component in a direction perpendicular to the ceiling 1. The horizontal arm 4 has a component in a direction parallel (horizontal) to the ceiling 1. The vertical arm 3 and the horizontal arm 4 are connected to each other. Since it is known that the ceiling pendant has a vertical arm and a horizontal arm, a detailed description is omitted.

  One major feature of the present invention is that the horizontal arm 4 is made of carbon fiber reinforced resin. In particular, the horizontal arm 4 is formed into a cylindrical body having an elliptical cross section using a carbon fiber reinforced resin. This elliptical cross section has a major axis in the vertical direction (up and down direction). Since the carbon fiber is used, the surface of the cylindrical body (horizontal arm 4) in a state where the surface coating is not performed is black in which the attached dust / dust is conspicuous. Also in FIG. 1, the horizontal arm 4 made of carbon fiber reinforced resin is displayed in black.

  Instead of carbon fibers, glass fibers, aramid fibers (for example, Kevlar (registered trademark)), and metal fibers can be used. However, in order to improve the weight and mechanical strength of the horizontal arm, it is desirable to use a fiber having a higher elastic modulus than Al. From this point of view, carbon fiber was optimal. Therefore, the present invention makes the carbon fiber reinforced resin an essential requirement.

  The horizontal arm 4 made of carbon fiber reinforced resin is obtained by molding a prepreg obtained by impregnating carbon fiber with resin. Carbon fibers are classified into a high elasticity type, a high strength type, and a general-purpose pitch type. The form of the fiber includes a unidirectional fiber, a woven type, and a paper type. Any form may be used. However, from the viewpoint of improving the mechanical strength, the fiber is preferably a planar (two-dimensional) type (for example, cloth or paper). Various resins are used as the resin. For example, an epoxy resin or a phenol resin is appropriately selected and used. Since these resins are uncured, they can be molded into a desired shape such as a pipe. The horizontal arm 4 of the present invention can be easily obtained by forming a carbon fiber reinforced resin prepreg into a pipe having an elliptical cross section and heat-treating it.

  The horizontal arm 4 made of carbon fiber reinforced resin is obtained as described above. On the other hand, the vertical arm 3 is made of Al. Since it is made of Al, the vertical arm 3 is displayed in white in FIG. The light metal vertical arm 3 and the carbon fiber reinforced resin horizontal arm 4 are coupled to each other by a light metal (for example, Al) connecting body 5 attached integrally (or separately) to the vertical arm 3. Is done through. A conventional technique of connecting an Al horizontal arm and an Al vertical arm is used to connect the connecting body 5 and the vertical arm 3.

  By inserting and fitting an end portion of a light metal coupling body (tubular body) 5 into a cylindrical carbon fiber reinforced resin horizontal arm 4, both are coupled (see FIG. 2). At this time, a plurality of ring-shaped concave grooves 6 are formed on the surface of the end portion of the light metal connector 5. An adhesive (for example, epoxy adhesive) 7 is filled in the ring-shaped concave groove 6. Accordingly, the light metal connector 5 and the carbon fiber reinforced resin horizontal arm 4 are firmly bonded to each other by the cooperative action of the fitting force (physical force) and the adhesive force (chemical (or physical force)) ( Integrated).

  The carbon fiber reinforced resin horizontal arm 4 produced in the above embodiment was 6.65 kg. The Al horizontal arm of the same shape was 8.05 kg. It can be seen that the horizontal arm of the present invention can be significantly reduced in weight (1.4 kg: 21%).

  One end of the horizontal arm was fixed, a load of 70 kg was applied to the other end, and the amount of deflection was examined. The horizontal arm made of carbon fiber reinforced resin of the present embodiment had a deflection of 7 mm. The Al horizontal arm of the same shape had a deflection of 13 mm. It can be seen that the horizontal arm of the present invention is not easily bent.

  Apply vibration to the ceiling pendant of the present invention in which a horizontal arm made of carbon fiber reinforced resin is incorporated and a ceiling pendant made entirely of Al (no horizontal arm made of carbon fiber reinforced resin is incorporated). The characteristic (damping property) was investigated. As a result, the sealing pendant of the present invention in which a horizontal arm made of carbon fiber reinforced resin was incorporated was excellent in vibration damping properties. This means that vibration is not easily transmitted to the mounted electronic devices during surgery. Therefore, for example, observation of a display image on a liquid crystal screen is very easy to make mistakes, which is convenient.

  Furthermore, since the horizontal arm 4 is made of carbon fiber reinforced resin, the shielding effect against electromagnetic waves from the built-in cable was great. Therefore, it is difficult to cause noise for electronic devices.

  In the above embodiment, the vertical arm 3 is made of Al. However, the vertical arm 3 may be made of carbon fiber reinforced resin. In this case, the electromagnetic wave shielding effect is even greater.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2010-41011 for which it applied on February 25, 2010, and takes in those the indications of all here.

DESCRIPTION OF SYMBOLS 1 Ceiling 2 Ceiling pendant 3 Light metal vertical arm 4 Carbon fiber reinforced resin horizontal arm 5 Light metal coupling body 6 Ring-shaped concave groove 7 Adhesive

Claims (5)

In the ceiling pendant that is mounted in a form that hangs from the ceiling and is used to install the device floating from the floor,
The ceiling pendant comprises a horizontal arm having a horizontal component;
The horizontal arm is
Cross-sectional elliptic cylinder,
A ceiling pendant comprising a carbon fiber reinforced resin. The ceiling pendant comprises a vertical arm having a vertical component;
2. The ceiling pendant according to claim 1, wherein the vertical arm is made of carbon fiber reinforced resin. The ceiling pendant comprises a vertical arm having a vertical component;
The ceiling pendant according to claim 1, wherein the vertical arm is made of a light metal. The ceiling pendant comprises a vertical arm having a vertical component;
The vertical arm and the horizontal arm are connected via a metal connector,
The connection form of the metal connection body and the horizontal arm is such that the metal connection body is inserted and fitted into the carbon fiber reinforced resin cross-sectional elliptic cylinder, and the surface of the insertion connection portion of the metal connection body The sealing pendant according to claim 1, wherein a concave groove is formed in the circumferential direction, and the concave groove is filled with an adhesive. 2. The ceiling pendant according to claim 1, wherein the elliptical cross section is an elliptical cross section having a major axis in the vertical direction.

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