JP2006162187A - Suspension device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension device with a simple constitution capable of easily adjusting a distance from the ceiling. <P>SOLUTION: This suspension device 1 has an upper side arm 12, and a lower side arm 13 capable of adjusting the length by sliding to this arm. The lower side arm 13 is formed into a structure rockable by a first support means 21. Since a projection part 35 and a hook part 25 for fixing the length can be engaged and disengaged by rocking the lower side arm 13, a distance up to an object from the ceiling 3 can be easily adjusted with a simple constitution. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a ceiling suspension device for suspending an object such as a far infrared heater from a ceiling.

  There is a demand to install various objects such as a far-infrared heater, a liquid crystal panel display, a plasma display, a speaker and the like suspended from the ceiling. For this purpose, a ceiling suspension bracket (device for ceiling suspension), which is an instrument for suspending an object from the ceiling, is used. As the ceiling suspension device, a device that can adjust the length from the ceiling to the object is convenient. If the bracket is adjustable in length, the far-infrared heater can be extended from the ceiling down to the operator when heating is necessary and close to the operator when heating is not needed, and removed from the field of view. It can be stored in a heavy ceiling.

The simplest structure of the ceiling suspension device of the type that can adjust the length from the ceiling is the same as that of a coaxial combination and can change the position of two slidable arms. It is fixed at the specified position. Thereby, the length of a ceiling suspension apparatus can be changed and the distance of a target object and a ceiling can be adjusted in several steps.
JP 2004-53708 A

  However, the screw-type ceiling suspension device has a poor operability because it is necessary to attach and detach the screw every time the distance from the ceiling is adjusted. Furthermore, when the screw is removed, there is a possibility that the object that the arms slide and hang down may fall off, which is dangerous. Japanese Patent Application Laid-Open No. 2004-53708 discloses a ceiling suspension device for a display. In this ceiling suspension device, the length of the entire arm expands and contracts when the cylindrical inner arm slides with respect to the cylindrical outer arm. The positions of the outer arm and the inner arm are fixed by fitting a locking piece protruding outward from the inner arm into a groove provided on the inner surface of the outer arm. The locking piece is pressed against the groove side (outside) by a spring, and is further connected to a traction handle provided at the lower end of the inner arm via a wire. When the pulling handle is pulled, the locking piece is pulled inward by the wire and removed from the groove, so that the inner arm can slide with respect to the outer arm. Since this ceiling suspension device supports the object by holding the handle and can adjust the length by operating the handle, the suspending device has better operability than the above-described screwing method.

  However, the method of pressing the locking piece against the spring is complicated in structure, and it is necessary to increase the strength of the spring to achieve a stable state. However, a great deal of force is required to attach and detach the locking piece. Therefore, even if it is said that the operability is better than that of a ceiling suspension device that attaches and detaches screws, it does not have the operability that anyone can easily change the length of the ceiling suspension device. For example, it is often difficult for a woman or a child to slide.

  Therefore, an object of the present invention is to provide a ceiling suspension device that can more easily adjust the distance (length) from the ceiling and has a simple configuration.

  For this reason, in the present invention, in the ceiling suspension device having the upper arm and the lower arm that can be adjusted in length by sliding relative to it, at least one of the upper arm and the lower arm can be swung, By swinging the upper arm or the lower arm, the pin for fixing the length and the hook can be engaged or removed. That is, the ceiling suspension device of the present invention for suspending an object from the ceiling includes an upper arm and a lower arm that can slide in the vertical direction with respect to the upper arm. Further, this ceiling suspension device is a first combination of a long hole provided in either one of the upper arm and the lower arm and extending vertically and a pin provided in the other and moving up and down in the long hole. 1 support means. Therefore, by moving the pin relatively in the elongated hole, the ceiling suspension device can be safely expanded and contracted in the vertical direction. Furthermore, at least one of the upper arm and the lower arm of the ceiling suspension device can swing in a predetermined direction. In order to be able to swing the upper arm, the upper arm may be attached so as to be swingable with respect to the upper arm or the ceiling. Even if the upper arm is fixed to the ceiling or the upper arm, the lower arm can be swung around a pin that moves relatively in the elongated hole.

  In addition, the ceiling suspension device includes a vertically extending slit provided in one of the upper arm and the lower arm, at least one hook portion provided along the slit, and the other provided in the slit. Is moved up and down, and the second support means is combined with a protrusion that can be attached to and detached from the hook by swinging the upper arm or the lower arm in a predetermined direction. Therefore, when making the length of the ceiling suspension device the longest, the object can be held with a pin at the lower end of the elongated hole of the first support means. By engaging the protrusions, the upper arm and the lower arm can be combined at a desired length, and the length of the ceiling suspension device can be adjusted. Since the hook part and the protrusion part can be attached and detached by swinging the upper arm or the lower arm, complicated parts such as a spring are unnecessary. Furthermore, the force for extending and contracting the spring is not necessary, and anyone can easily adjust the length of the ceiling suspension device as long as it has the force to lift the object. And this ceiling suspension device is highly reliable because of its simple structure.

  There may be one or more hook portions of the slit. By providing a plurality of hook portions in the vertical direction, the length of the bracket can be adjusted in multiple stages. In addition, the shape of the lower part of the hook part is such that when the lower arm is moved upward and the protruding part hits the lower part of the hook part, the upper arm or the lower arm is swung in a predetermined direction. It is desirable to be inclined to enter the hook portion. If it has such a shape, a protrusion part can be engaged with a hook part only by moving a lower arm upwards, and the length of a ceiling suspension apparatus can be fixed in the position of a hook part.

  The shape of the upper part of the hook part is that the lower arm is moved upward and the upper arm or lower arm swings in a predetermined direction when the protrusion hits the upper part of the hook part. It is desirable to tilt it so that it is off If it has such a shape, a protrusion part can be removed from a hook part only by moving a lower arm upwards, and the length of a ceiling suspension apparatus can be changed.

  The upper arm and the lower arm may be cylindrical or prismatic, but it is necessary to provide a gap for swinging between them. On the other hand, of the upper arm and the lower arm, the outer arm is formed by a member having a C-shaped (C-shaped) cross section, and the direction in which the C-shape is opened and the direction in which the arm swings are determined. By matching, a gap for swinging the arm can be omitted.

  Furthermore, by providing a switching means operated by a pin at the lower end of the elongated hole, the object to be suspended can be brought into operation only when the ceiling suspension device is extended to the longest. For example, if the object is a far-infrared heater, it can be turned on and operated as a heater only when the ceiling suspension device is extended and the heater is lowered. Safety can be improved by preventing the power from being turned on.

  According to the ceiling suspension device of the present invention, the suspension length or distance from the ceiling can be adjusted very easily, and a ceiling suspension device excellent in durability and reliability can be provided. Therefore, it is possible for anyone to easily and safely adjust the distance from the ceiling to the object, and to provide a ceiling suspending device with extremely good operability. The ceiling suspension device of the present invention is not limited to the far-infrared heater, and can be used to suspend all products such as liquid crystal panel displays, plasma displays, projectors, electric bulletin boards, watches, and speakers from the ceiling.

  Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 shows a use state of a ceiling suspension device 1 according to the present invention. FIG. 1A shows a state in which the length of the ceiling suspension device 1 is extended, and FIG. 1B shows a state in which the length of the ceiling suspension device 1 is shortened. The ceiling-suspended device 1 of this example is a device for suspending the far-infrared heater 2 from the ceiling 3 as an object to be suspended from the ceiling. As shown in FIG. 1A, in the winter season, when the ceiling suspension device 1 is extended, the far-infrared heater 2 can be separated from the ceiling 3 and placed near the worker 4 below. Therefore, the periphery of the worker 4 can be warmed intensively. In addition, the floor-mounted heater occupies the floor, which is a work space, and therefore easily disturbs the work, whereas the ceiling-mounted heater is convenient because it does not interfere with the work.

  In this example, a storage shelf 5 that is one step lower is provided on the ceiling 3, and the ceiling suspension device 1 is contracted and placed in the storage shelf 5 including the heater 2 during a period when a heater is unnecessary, such as in summer. be able to. Therefore, the heater 2 does not get in the way during work and does not get in the way, the work space looks good, and further, storing the heater 2 when not in use can prevent damage in summer. In addition, the ceiling suspension device 1 is provided with a power switch 45 that is turned on when the ceiling suspension device 1 is extended to connect the heater 2 and the power source, and the heater 2 is only extended when the ceiling suspension device 1 is extended. Can be used. Therefore, in a state where the ceiling suspension device 1 is contracted and the heater 2 is stored, the connection with the power source is automatically cut off, so that it can be stored safely.

  FIG. 2A is a perspective view showing a state in which the heater 2 is supported by the ceiling suspension device 1. The ceiling suspension device 1 has a base 11 fixed to the ceiling 3, an upper end 12 a fixed to the base 11, an upper arm 12 extending vertically, and a vertical slide with respect to the upper arm 12. It has a linear lower arm 13 that can expand and contract in steps. Each of the upper arm 12 and the lower arm 13 is configured by a linear member having a C-shaped cross section, and the far-infrared heater 2 is attached to the lower end of the lower arm 13 via a connecting portion 14. In addition, the angle of the heater 2 can be adjusted by adjusting the angle of the connecting portion 14.

  FIG. 3A shows a state in which the ceiling suspension device 1 is extended in cross section, and FIG. 3B shows a state in which the ceiling suspension device 1 is contracted in cross section. Long holes 23 extending vertically are formed in both side walls 31 of the upper arm 12 formed of a C-shaped member. Further, pins 41 are attached to the upper portions of both side walls 33 of the lower arm 13 formed of a C-shaped member. The upper arm 12 and the lower arm 13 are combined so that the pin 41 moves up and down in the elongated hole 23. In this example, the lower arm 13 is superposed on the outside of the upper arm 12, that is, the central wall 34 of the lower arm 13 and the central wall 32 of the upper arm 12 are combined so as to be located on the same side. Yes. In this combination, one of the combinations becomes an opening, so that the switch box 45 can be attached thereto. For this reason, the whole ceiling suspension device including the switch box 45 can be thinly and nicely put together. One side of the opening can be blocked by fixing the cover 49 to the upper arm 12. Note that the central wall 32 of the upper arm 12 and the central wall 34 of the lower arm 13 face each other, that is, the C-shape of the upper arm 12 and the C-shape of the lower arm 13 face each other. You may combine so that it may form.

  In the ceiling suspension device 1, the pin 41 of the lower arm 13 moves up and down in the elongated hole 23 of the upper arm 12, so that the lower arm 13 slides up and down without coming off the upper arm 12. Further, when the pin 41 reaches the lower end 23b of the elongated hole 23, the pin 41 is fully extended and always stops. Therefore, the lower arm 13 does not fall from the upper arm 12 and is safe. In this example, the long hole 23 of the upper arm 12 and the pin 41 of the lower arm 13 constitute the first support means 21 of the ceiling suspension device 1 of this example in which the arms slide smoothly up and down. is doing. Further, the lower arm 13 is attached to the outside of the upper arm 12, and the pin 41 has a shaft structure that connects both side walls 33 of the lower arm 13. Therefore, the pin (hereinafter referred to as the shaft) 41 has a structure that penetrates the upper arm 12 through the elongated hole 23, and the lower arm 13 and the upper arm 12 do not come off in either direction and are safe. It has become. The upper arm 12 is fixed to the base plate 11 and does not swing, but the lower arm 13 can swing back and forth (in the direction of the center wall 34) about the shaft 41.

  In this example, the upper arm 12 and the lower arm 13 are combined in the same direction so that their center walls overlap each other, so that the lower arm 13 overlaps the upper arm 12 after swinging forward. When returning, the central walls come into contact with each other. For this reason, the upper arm 12 and the lower arm 13 are combined straightly in the vertical direction with the central walls facing each other in parallel without being twisted. Therefore, the stability in the steady state where the length of the ceiling hanger 1 is not changed is good. On the other hand, it is possible to combine the upper arm 12 and the lower arm 13 in opposite directions. In this case, the tip of the side wall 31 of the upper arm 12 contacts the central wall 34 of the lower arm 13 with a line in a steady state. Therefore, if there is a gap between both arms 12 and 13 or if there is a slight inclination during mounting, rattling may occur.

  As shown in FIG. 2B, the ceiling suspension device 1 includes a switch 46 that is operated when the pin 41 reaches the lower end 23 b of the long hole 23. The switch 46 is housed in a switch box 45 attached to the upper arm 12 and is turned on when pressed by the shaft 41. Then, the cord 47 connected to the power supply side and the cord 48 connected to the heater 2 are electrically connected, and the heater 2 is turned on by turning on the heater 2. On the other hand, when the shaft 41 is disengaged from the lower end 23b of the long hole 23, the switch 46 is turned off, so that the heater 2 cannot be used.

  As shown in FIG. 3B, the one side wall 31 of the upper arm 12 is provided with a slit 28 extending upward from the lower end 12b, and the slit 28 is provided with a one-stage hook portion 25. . In addition, a protrusion 35 is provided at a position where the slit 28 is entered at the lower portion of the side wall 33 of the lower arm 13 on the side where the slit 28 of the upper arm 12 is provided. Therefore, as shown in FIG. 3B, when the lower arm 13 is slid upward and the lower arm 13 is swung rearward, the protrusion 35 enters the slit 28 and engages with the hook 25. And stop. For this reason, the ceiling suspension apparatus 1 can be fixed in a contracted state. On the other hand, when the lower arm 13 is swung forward, the projection 35 can be removed from the hook 25 and the lower arm 13 can be slid downward to extend the ceiling suspension device 1. Therefore, the slit 28 and the hook portion 25 of the upper arm 12 and the projection portion 35 of the lower arm 13 constitute the second support means 22 of the ceiling suspension device 1 of this example.

  In FIG. 4, the lower end 12b of the upper arm 12 is shown enlarged. The hook portion 25 has a hook shape, and a concave portion 25a is formed on the lower side. When the protrusion 35 enters the recess 25a, the hook portion 25 is stabilized by the weight of the heater 2, and the protrusion 35 is carelessly formed. Thus, the ceiling suspension device 1 is not extended. The lower side of the hook portion 25 of the slit 28 is a portion 25b that is cut obliquely so that the lower side becomes wider. For this reason, when the lower arm 13 is moved upward and the protruding portion 35 hits the lower portion 25 b of the hook portion 25, the lower arm 13 swings (turns) around the shaft 41, and the protruding portion enters the slit 28. 35 enters, and then the projection 35 enters the hook portion 25 by turning back. In this example, the opposite side 26 b of the slit 28 is also inclined in a symmetric shape, so that the protrusion 35 can be easily guided into the slit 28.

  FIG. 5 shows a movement when the ceiling suspension device 1 is extended by removing the protrusion 35 from the hook portion 25 using the cross section of the ceiling suspension device 1. First, as shown in FIG. 5A, the lower arm 13 is slightly slid upward, and the protruding portion 35 is lifted from the hook portion 25. In this state, as shown in FIG. 5B, when the lower arm 13 is swung forward about the shaft 41, the protrusion 35 is detached from the hook portion 25. Therefore, as shown in FIG. 5C, the protrusion 35 can be moved up and down inside the slit 28, and the lower arm 13 can be slid downward. As described above, the ceiling suspension device 1 of the present example can attach and detach the protrusion 35 to and from the hook portion 25 by swinging the lower arm 13, and can easily be performed with the lower arm 13 contracted upward. Can be fixed to. Therefore, it is not necessary to insert or remove the protrusions against the springs or to tighten the screws. After the protrusion 35 is hooked on the hook portion 25 to stop the movement, the lower arm 13 and the upper arm 12 may be further fixed with screws for safety.

  In the ceiling-suspended device 1 of this example, only one hook portion 25 is provided, but it is possible to provide a plurality of hook portions 25 by extending the slit 28 upward. And by attaching / detaching the projection part 35 to / from each hook part 25, it becomes possible to set the ceiling suspension device to a length between the longest and shortest. In this case, in the ceiling suspension device 1 of the present example, the upper portion 27 of the hook portion 25 is flat, but the shape of the upper portion of the hook portion of the slit is the protrusion 35 by moving the lower arm 13 upward. It is desirable that the lower arm 13 is tilted so as to swing in the center direction of the slit 28 when it hits the upper portion of the hook portion. By adopting such a shape, it is possible to swing the lower arm 13 by simply sliding the lower arm 13 upward, remove the protrusion from the hook, and hang the protrusion on the upper hook. It becomes.

  In the above example, the long hole 23 is provided in the upper arm 12 and the pin (shaft) 41 is provided in the lower arm 13. Conversely, the long arm 23 is provided in the lower arm 13 and the upper arm 12. It is also possible to form the first support means 21 by providing a pin (shaft) 41 on the front side. In this case, when the pin 41 reaches the upper end of the long hole 23, the ceiling suspension device is fully extended. Therefore, it is desirable to operate the safety switch 46 in this state. Further, in the above example, the slit 28 and the hook portion 25 are provided at the lower end 12 b of the upper arm 12, and the protrusion 35 is provided at the lower arm 13, but conversely, the slit is formed at the upper end of the lower arm 13. It is also possible to form the second support means 22 by providing the hook portion 25 and the protrusion 35 on the upper arm 12. Further, the upper arm 12 is supported so as to pivot with respect to the ceiling 3, and the protrusion 35 of the hook portion 25 is attached or detached by swinging instead of the lower arm 13 or in the direction opposite to the lower arm 13. You may make it do.

  Moreover, the ceiling suspension apparatus of the present invention is not limited to the use of hanging the far infrared heater 2 from the ceiling 3 as an object, but an apparatus for installing all objects such as a liquid crystal display, a plasma display, a projector, and a speaker. It is applicable to. Moreover, if the place where the bracket is installed is a place that can be used as a ceiling such as a factory, office, house, vehicle, roof, etc., it can be installed and used regardless of whether it is indoors or outdoors.

It is a figure which shows the use condition of the ceiling suspension apparatus to which this invention is applied. FIG. 2A is a perspective view showing an external appearance of a ceiling suspension device to which the present invention is applied, and FIG. 2B is a diagram showing an outline of a control box of the ceiling suspension device. FIG. 3A is a cross-sectional view of the ceiling suspension device, FIG. 3A is a diagram illustrating a state in which the ceiling suspension device is extended, and FIG. 3B is a diagram illustrating a state in which the ceiling suspension device is contracted. It is a figure which expands and shows the lower end of an upper arm. It is sectional drawing which shows operation | movement when extending a ceiling suspension apparatus, Fig.5 (a) is the state which floated the protrusion part from the hook part, FIG.5 (b) is a front lower arm from the state of Fig.5 (a). FIG. 5C is a diagram showing a state in which the lower arm is slid down.

Explanation of symbols

1 Ceiling suspension 2 Far-infrared heater (object)
3 Ceiling 12 Upper arm 13 Lower arm 21 First support means 22 Second support means 23 Long hole 25 Hook part 28 Slit 35 Projection part 41 Shaft 45 Control box

Claims (6)

A ceiling suspension device for hanging an object from the ceiling,
An upper arm;
A lower arm that can slide vertically with respect to the upper arm;
The first support means is a combination of a vertically extending elongated hole provided in one of the upper arm and the lower arm and a pin provided in the other and moving up and down in the elongated hole. And at least one of the upper arm and the lower arm is swingable in a predetermined direction, and
A vertically extending slit provided in one of the upper arm and the lower arm, and at least one hook portion provided along the slit, and provided in the other, moving up and down in the slit; A ceiling suspension device comprising second support means in combination with a protrusion that can be attached to and detached from the hook by swinging the upper arm or the lower arm in the predetermined direction.   The shape of the lower part of the hook part of the slit according to claim 1, wherein the upper arm or the lower arm is formed when the lower arm is moved upward and the protrusion hits the lower part of the hook part. A ceiling suspension device that swings in the predetermined direction and is inclined so that the protrusion enters the hook portion.   The shape of the upper part of the hook part of the slit according to claim 1, wherein the upper arm or the lower arm is formed when the lower arm is moved upward and the protrusion hits the upper part of the hook part. A ceiling suspension device that swings in the predetermined direction and is tilted so that the protruding portion is detached from the hook portion.   2. The ceiling suspension apparatus according to claim 1, wherein an arm that is outside of the upper arm and the lower arm is configured by a member having a C-shaped cross section.   2. A ceiling suspension apparatus according to claim 1, further comprising switching means operated by the pin at a lower end of the elongated hole.   The ceiling suspension apparatus according to claim 1, wherein the object is a far infrared heater.

Images