JP2009240479A - Table and fitting type auxiliary device used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fix a wiring processing duct which is fitted to the opening of a table from the upper part, to a top plate without causing any deformation. <P>SOLUTION: The wiring processing duct 5 is disposed in the state of being projecting from the lower side of the top plate 1. A flange 16 is formed at the upper end of a body 6 configuring the wiring processing duct 5, and a pressing member 17 is fixed with a machine screw 18 at the outside of the part projecting from the lower side of the top plate 1 of the body 6. The pressing member 17 has a cam-like pressurizing surface 21 extending around the axis of the machine screw 18, and by the abutment of the pressurizing surface 21 onto the top plate 1 from the lower part, the body 6 is held without play. Even when the machine screw 18 is strongly screwed, since the rotary torque does not act as strong strut force to the top plate 1, the body 6 is not deformed even when it is made of a thin resin. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an auxiliary device such as a wiring processing duct that is used by being fitted into a top plate of a table (desk), and a table provided with the auxiliary device.

  In offices, stores, and various facilities, a table that supports a top plate with legs is used, and a wiring processing duct is provided in this opening by opening a wiring opening. In this case, since the table surrounds the person (or faces the person), generally a rectangular opening is formed in the center of the top plate in plan view, and wiring is provided at the opening. The processing duct is fitted and arranged.

  The wiring processing duct needs a certain amount of capacity. For this reason, the wiring processing duct has a depth protruding below the top plate. Note that the wiring processing duct includes a bottomed type and a bottomless type, and when there is no bottom, a wiring receiving material may be disposed below the wiring processing duct.

  It is necessary to attach the wiring processing duct to the top plate without any backlash, and since there are multiple types of top plates with different thicknesses, consideration is given that they can be fixed regardless of the thickness of the top plate. Is requested. With respect to this point, in Patent Document 1, a flange to be applied to the upper surface of the top plate is formed at the upper end of the main body constituting the wiring processing duct, and a bracket projecting below the top plate is provided at the lower end portion of the main body. It is described that a holding screw that contacts the lower surface of the top plate is screwed into the bracket.

In Patent Document 1, the main body of the wiring processing duct is fixed without rattling because the top plate is sandwiched from above and below by the flange and the holding screw, and can be fixed regardless of the thickness of the top plate.
JP 2002-136353 A

  By the way, the main body of the wiring processing duct is often made of a molded product such as resin or aluminum from the viewpoint of aesthetics or workability, and therefore the strength is not so strong (in the first place, the wiring processing duct is subjected to a large load). Because it is not a thing, high strength is not necessary.) For this reason, if a certain amount of force is applied, it will be deformed, and if it is severe, it will be damaged. In particular, in the case of resin, the problem of deformation appears remarkably.

  And, in the case of the fixing method using the holding screw as in Patent Document 1, when the person rotates the holding screw to fix the main body, it may be difficult to grasp the tension of the holding screw with respect to the top plate with the hand feeling. There is a concern that the holding screw may be further screwed into contact with the lower surface of the top plate and deform the main body and the bracket of the wiring processing duct. In other words, since the main body and bracket of the wiring processing duct are easily deformed, the set screw can rotate even though it hits the lower surface of the top plate. This is a possibility that the phenomenon of deformation occurs.

  Furthermore, since the bracket to which the set screw is attached protrudes sideways from the main body and is in a cantilever state, the reaction force due to the set screw hitting the top plate acts as a moment on the bracket, For this reason, even if the rotational torque of the holding screw is not so large, a large force acts on the bracket and the main body, and as a result, the bracket and the main body are easily deformed.

  The present invention has been made to improve the current situation.

  The inventor of the present application has made studies based on the above knowledge and completed the invention of each claim. That is, the invention of claim 1 relates to a table-fitting auxiliary device such as a wiring processing duct, and this invention includes a main body that enters from above into an opening provided in the top plate of the table. A flange that overlaps the upper surface of the top plate is formed at the upper end, and a pressing member having a pressing surface that hits the lower surface of the top plate from below is rotated on the outer peripheral portion of the main body by rotating the pressing surface. The pressing surface of the pressing member extends in the circumferential direction and the distance from the rotation center gradually increases from one end to the other end. It has a circumferential cam shape.

  The invention of claim 2 is a preferred embodiment of claim 1, and this invention is the invention according to claim 1, wherein the main body is rectangular in plan view and has a depth that protrudes below the top plate, The pressing member is disposed so as to overlap a portion of the main body that protrudes below the top plate. The pressing member is fastened to the main body with a screw that penetrates the pressing member, and the pressing member is a screw. The pressing surface of the pressing member is gradually increased in distance from the screw shaft from the front side toward the rear side in the screwing direction of the screw. Is set to

  The invention according to claim 3 is the one in which the invention according to claim 1 or 2 is applied to a wiring processing duct. In claim 1 or 2, the upper surface of the main body is provided with a lid that can be opened and closed or detached. The cables can be taken in and out by opening / closing or removing the lid. As described in claim 4, the present invention also includes a table to which the auxiliary device described in any one of claims 1 to 3 is attached.

  In the present invention, the main body is fixed by stretching the pressing member below the top plate, but since the pressing surface of the pressing member is cam-shaped, the difference in the thickness of the top plate is the contact position. Can respond by change. Therefore, one type of device can be attached to a desk with a different top plate thickness without backlash.

  And, in the present invention, as one of the methods for fixing the pressing member in a state of being in contact with the top plate, there is a method of fixing while holding the state where the pressing member is applied to the top plate, in this case, Since the holding member has a certain distance from the center of rotation to the pressing surface, a person can reliably grasp the state where the pressing surface is in contact with the top plate as a feel, and excessively pushes the top plate upward. Even if the presser member is fastened to the main body, the fastening force does not act at all or almost as a pushing force of the presser member against the top plate, so it can be fastened even if the main body is not manufactured with high strength. There is no such thing as deformation.

  On the other hand, when a certain member is fastened to another member with a screw, there is a phenomenon in which a certain member rotates with the screw. In the configuration of claim 2, the phenomenon is used to manually hold the pressing member by hand. Even if the state of contact with the plate is not maintained, there is an advantage that the pressing member can be automatically changed and fixed to the posture of contacting the top plate only by screwing the screw.

  In this case, the screwing torque of the screw does not act as a strong tension force on the top plate, and the pressing force of the holding member against the top plate by the accompanying rotation of the screw is not so high. The main body is not stretched and a large force does not act on the main body. Therefore, even if the main body is not manufactured with high strength, the main body is not deformed.

  Next, an embodiment of the present invention will be described with reference to the drawings. 1A is a perspective view of the table, FIG. 1B is a plan view of the main part of the table, FIG. 2A is a cross-sectional view taken along the line IIA-IIA in FIG. 1B, and FIG. (A) is a partial enlarged view, (C) is a cross-sectional view taken along the line CC in (A), (D) is another example view, and FIG. 3 is a partially separated schematic cross-sectional view as seen from the IIB-IIB view direction in FIG. is there.

(1). Configuration The table is used, for example, for meetings, business negotiations and conversations. As shown in FIG. 1, the table has a basic configuration in which a rectangular top (left and right horizontally) top plate 1 is supported by left and right legs 2. It has become. The top plate is made of wood (may be made of steel), while the left and right legs 2 are connected by reinforcing bars 3. A horizontally long opening 4 is open in the middle of the top plate 1, and a wiring processing duct 5, which is an example of an auxiliary device, is fitted in and attached to the opening 4. The wiring processing duct 5 includes a main body 6 opened up and down, and two front and rear lids 7 disposed on the upper surface of the main body 6.

  The wiring processing duct 5 protects cables and is pulled out from below and prevents the object from falling into the opening 4. The wiring processing duct 5 has a depth more than twice the thickness of the top plate 1. For this reason, the wiring processing duct 5 protrudes greatly below the top plate 1. A receiving plate 8 is suspended below the wiring processing duct 5 by left and right suspension members 9. The receiving plate 8 is provided with extra cable portions, power supply taps, communication connectors such as a LAN port terminal, and the like.

  As shown in FIGS. 2A and 3, the main body 6 includes front and rear side plates 10, an end cap 11 having an outward opening fixed to the left and right ends of the front and rear side plates 10, and the end cap 11 from the left and right outer sides. It consists of an attached end plate 12. The lid 7 can be rotated from the closed position indicated by the solid line in FIG. 3 to the open position indicated by the dotted line. The lid 7 has a foot portion 7a located inside the main body 6. A circular guide projection 7b is projected outward from the lower end of the foot portion 7a, while the end cap 11 has a guide projection. An arcuate elongated hole 13 is provided which guides the movement of 7b and moves the lid 7 between the closed position and the open position.

  In the hollow portion surrounded by the end cap 11 and the end plate 12, two first links 14 and second links 15 for defining the movement trajectory of the movement of the lid 7 are arranged. The description is omitted because it is not related to the present invention. In FIG. 3, the first link 14 and the second link 15 are indicated by solid lines, but this is for convenience in understanding the shape. It is hidden behind the cap 11.

  The lid 7 of the present embodiment is an extruded product and is formed in a hollow shape. The lid 7 may be detachable, and there may be a configuration in which the lid 7 is not provided. Needless to say, an arbitrary mechanism can be adopted in the case of opening and closing. As shown in FIG. 3, a ridge 10a having a substantially circular hollow hole is formed in the lower part of the side plate 10, and the end cap 11 is fixed to the side plate 10 with screws screwed into the ridge 10a. Each member constituting the main body 6 is made of aluminum, but may be made of resin, or the side plate 10 and the lid 7 may be made of aluminum, and the end cap 11 and the end plate 12 may be made of resin. Is possible.

  The side plate 10 constituting the main body 6 is manufactured by extrusion molding, and a narrow flange 16 that overlaps the upper surface of the top plate 1 is integrally formed at the upper end thereof. Then, two right and left pressing members 17 are arranged on the outer surface portion of the front and rear side plates 10 and protruding below the top plate 1, and each pressing member 17 is a countersunk screw 18 at a position near the lower end of the side plate 10. It is concluded with. The countersunk screw 18 is a right-handed commercial product, and its axis is orthogonal to the wide surface of the side plate 10. In the side plate 10, a protrusion 19 is projected inwardly at a portion where a female screw hole into which the countersunk screw 18 is screwed is formed to ensure the depth of the female screw hole.

  As shown in FIGS. 2A and 2B, the pressing member 17 has a plate shape that can overlap the outer surface of the side plate 10. The pressing member 17 is a resin molded product, and has a screw hole 20 into which the countersunk screw 18 is fitted, and a pressing surface that extends around the axis of the countersunk screw 18 (that is, extends in the rotational direction of the pressing member 17). 21.

  The pressing surface 21 is in contact with the lower surface of the top plate 1, spreads in a range of approximately 90 ° of the countersunk screw 18, and from the front end (one end) with reference to the screwing rotation direction of the countersunk screw 18. The cam surface is such that the distance L from the axial center of the countersunk screw 18 gradually changes toward the end portion (the other end portion). The outer peripheral surface excluding the pressing surface is orthogonal, so that the pressing member 17 has a generally fan-like shape as a whole.

(2). Summary As can be understood from the above description, the pressing member 17 is fastened to the side plate 10 of the main body 6 with the countersunk screw 18 with the pressing surface 20 in contact with the top plate 1 from below. The main body 6 of the wiring processing duct 5 is held (fixed) in a state where there is no backlash with respect to the top plate 1. And since the press surface 20 is a cam surface, even if the thickness of the top plate 1 differs, it can respond automatically by changing a contact position.

  In fastening the pressing member 17 to the side plate 10, it is possible to screw the countersunk screw 18 with the driver 22 while holding the pressing member 17 against the top plate 1 by hand. As indicated by the alternate long and short dash line in FIG. 2 (B), the screw can be fastened in a predetermined state simply by screwing the countersunk screw 18 into a free state without touching the pressing member 17.

  That is, when the countersunk screw 18 is screwed while the presser member 17 remains free, the frictional force of the countersunk screw 18 acts on the tapered counterbore surface of the screw hole 20 of the presser member 17 at the end of screwing. A phenomenon occurs in which the pressing member 17 automatically rotates in the screwing direction of the countersunk screw 18 and comes into contact with the lower surface of the top plate 1. For this reason, the presser member 17 is fixed to the top plate 1 so as to be stretched from below only by screwing the countersunk screw 18 with the driver 22.

  The pressing member 17 merely abuts against the top plate 1 due to the frictional force with the countersunk screw 18, and even if the countersunk screw 18 is screwed in strongly, the screwing torque of the countersunk screw 18 is a force that causes the pressing member 17 to overlap the side plate 10. Since it only acts and does not act as an external force that deforms the side plate 10, the main body 6 of the wiring processing duct 5 is not deformed by fixing the countersunk screw 18 by screwing.

  It is possible to use a screw whose seat surface is orthogonal to the axial center, such as a pan head or a hexagon head, but when the countersunk screw 18 is used as in this embodiment, the holding member 17 is rotated. The effect appeared properly and was suitable. Further, as shown in FIG. 2D as a modified example, a spacer such as a washer 23 can be interposed between the pressing member 17 and the side plate 10.

  In this case, when the washer 23 is used, a flat washer or a spring washer may be used. When the washer 23 is interposed as in this embodiment, the holding member 17 rotates together with the washer 23. The washer 23 rotates relative to the holding member 17 and the side plate 10, so that the accompanying rotation phenomenon due to screwing of the countersunk screw 18 occurs. Since it appears conspicuously, it is more certain that the pressing member 17 is automatically in the pressing posture (when the spring washer is used, the accompanying rotation is further ensured). Although not shown in the drawing, when the countersunk screw 18 is used, it is possible to use a conical washer.

  It is also possible to position the screw head inside the main body 6 and screw the screw into the holding member 17 (in this case, the screw is preferably a hexagonal head type or one with a hexagonal hole). Further, the holding member 17 can be fastened to the screw, nut and side plate 10, and in this case, the screw selects either the posture in which the head is positioned outside the main body 6 or the posture in which the head is positioned inside. it can.

(3). Others The present invention can be embodied in various ways other than the above embodiment. For example, the form of the opening in the table is not limited to the closed system as in the embodiment, and may be formed between the two front and rear top plates so as to extend along the entire length of the left and right. Further, the auxiliary device targeted by the present invention is not limited to a wiring processing duct for cables, and can be applied to, for example, an article storage case, a head portion of a tobacco purification device, and the like.

  The arrangement position and the number of pressing members can be arbitrarily set according to the shape and size of an auxiliary member such as a wiring processing duct. Further, in the above embodiment, the function of rotating the pressing member and the function of fastening to the main body are secured by screws, but both functions can be secured by separate members.

(A) is a perspective view of the table which concerns on this embodiment, (B) is a principal part top view of a table. IIA-IIA sectional view of (A) in FIG. 1 (B), (B) is a partially enlarged view of (A), (C) is a sectional view of CC in (A), and (D) is another example. FIG. It is the partial isolation | separation schematic sectional drawing which looked at FIG. 2 from the IIB-IIB viewing direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 4 Opening part 5 Wiring processing duct as an example of auxiliary device 6 Wiring processing duct main body 7 Wiring processing duct lid 10 Side plate constituting main body 16 Side plate flange 17 Holding member 18 Countersunk screw as an example of screw 21 Press surface

Claims (4)

A main body that enters from above into an opening provided in the top plate of the table is provided, and a flange that overlaps an upper surface of the top plate is formed at an upper end portion of the main body. A pressing member having a pressing surface that hits the lower surface of the pressing member from below is fastened so that the pressing surface contacts and separates from the top plate by rotating, and the pressing surface of the pressing member is in the circumferential direction. It has a circumferential cam shape that extends and gradually changes its distance from the center of rotation as it goes from one end to the other.
Table fitting type auxiliary device. The main body is rectangular in plan view and has a depth that protrudes below the top plate, while the pressing member is disposed so as to overlap a portion of the main body that protrudes below the top plate. The member is fastened to the main body with a screw that penetrates the pressing member, and the pressing member rotates about the axis of the screw. The pressing surface of the pressing member faces the screwing direction of the screw. The distance from the screw shaft center is gradually increased from the front side to the rear side.
The table fitting type auxiliary device according to claim 1. A lid is provided on the upper surface of the main body so that the lid can be opened and closed, or detachable, and cables can be taken in and out by opening and closing or removing the lid.
A wiring processing duct as a table fitting type auxiliary device according to claim 1 or 2.   A table to which the auxiliary device according to claim 1 is attached.

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