JP6939355B2 - Wiring duct cover device - Google Patents

Description

The present invention relates to a cover device for a wiring duct, and more particularly to a cover device for opening and closing a duct opening in furniture or furniture provided with a wiring duct.

Various furniture and fixtures equipped with a wiring function have been conventionally provided. In particular, a duct opening is provided between a part of the top plate or the rear end of the top plate and the rear curtain plate, or between the front and rear top plates, and the duct opening is provided. Desks and tables with a structure provided with a wiring cover that can be opened and closed are well known.

In Patent Document 1, a duct opening is provided between the front and rear top plates, a support member is provided along the central portion of the duct opening, and both edges of the support member have arcuate side surfaces, such as aluminum. Described is a structure in which an arc-shaped circumscribed surface of a wiring cover made of an extruded material is rotatably fitted onto the arc-shaped side surface, and the wiring cover is rotatably supported between a horizontal state and a substantially vertical state. In this case, when the vertical wiring cover is rotated in the horizontal state to close the duct opening, the arc-shaped side surface is used to suppress the sudden rotation of the wiring cover and to keep the wiring cover in the horizontal state and the vertical state. Two recesses are provided, an elastic arc-shaped circumscribed surface is provided on the end cap attached to the end of the wiring cover, and a convex portion that engages with the recess is provided at the tip of the circumscribed surface. It is configured to be in sliding contact with the arcuate side surface.

Further, in Patent Document 2, a plurality of wiring covers are arranged in the longitudinal direction of the duct opening, and each wiring cover has a structure in which end members are attached to both ends of a cover body of an extruded mold material. A structure is described in which the end member is rotatably supported by an end support and an intermediate support arranged in the duct opening. Here, the reason why the wiring cover is divided into a plurality of parts and the intermediate bearing is used is that the bending of the wiring cover becomes a problem when the width of the desk is widened, and the weight becomes too heavy when the rigidity is increased so as not to bend. This is to solve the problem. Of course, if the weight of the wiring cover becomes heavy, the opening / closing operation becomes heavy and the usability deteriorates, and it is assumed that when the wiring cover is closed from the open state, it suddenly rotates and a loud collision noise is generated.

Patent Document 3 describes a structure in which a rotating damper is provided in a rotating portion of a wiring cover, but the structure becomes complicated and the number of parts increases. There are many furniture and fixtures that have a rotating damper on a heavy door or a hinge of a movable part to limit the rotation speed, but the rotating damper is generally expensive. When used for office furniture, etc., the cost tends to be high.

Japanese Unexamined Patent Publication No. 2006-006770 Japanese Unexamined Patent Publication No. 2012-045115 Japanese Unexamined Patent Publication No. 2006-149733

Therefore, in view of the above situation, the present invention attempts to solve the problem in furniture and fixtures provided with wiring ducts such as desks, tables, and benches, even if the wiring cover has low bending and high rigidity. The point is to provide a wiring duct cover device capable of lightly rotating and opening and closing the opening and suppressing the generation of collision noise.

The present invention provides a wiring duct cover device having the following configuration in order to solve the above-mentioned problems.

(1)
A wiring duct cover device in which a wiring cover is provided so as to be rotatable and openable at a duct opening provided at an appropriate position in furniture or furniture. The base end portion is supported by a shaft support portion so as to be vertically rotatable, and a stroke type damper is supported vertically at a position near the shaft support portion of the support tool, and a hemispherical contact portion is provided at the upper end portion. The actuating pins of the stroke damper are arranged upward so that the actuating pins come into contact with the receiving surface of the wiring cover until the wiring cover is tilted at a predetermined angle to a horizontal state to open the wiring cover. A wiring duct cover device characterized by elastic urging.

(2)
The wiring duct cover device according to (1), wherein the receiving surface of the wiring cover to which the contact portion of the operating pin abuts is a downwardly convex arc surface.

(3)
The wiring duct cover device according to (2), wherein the wiring cover is in a horizontal state when it is completely closed, and the contact portion of the operation pin is in contact with the horizontal plane of the receiving surface.

(4)
The cover body of the wiring cover is made of an extruded aluminum mold material, the bearing is a molded product of synthetic resin, and the shaft support is formed in a shaft groove having a substantially C-shaped cross section formed at the base of the cover body. The wiring duct cover device according to any one of (1) to (3), which has a structure in which a support shaft having a slit formed in a support portion with an axial direction oriented horizontally is rotatably tightly fitted.

(5)
The support shaft of the support tool is provided on a support base projecting upward from the support tool with both ends protruding sideways, and a notch for receiving the support base is provided in a part of the shaft groove of the cover body. The wiring duct cover device according to (4), wherein the lateral movement of the wiring cover is restricted by contacting the edge of the notch with the support base.

The wiring duct cover device of the present invention as described above has the following effects.

According to the configuration of (1), since the stroke type damper is provided at a position close to the shaft support, the damper function can be used from an early stage of the operation of closing the wiring cover, and the difference in the weight of the wiring cover is absorbed. be able to. Further, the contact noise between the operating pin of the stroke type damper and the wiring cover can be reduced by contacting the operation pin and the wiring cover before the acceleration is applied. By using a stroke type damper, which is cheaper than a rotary damper, it is possible to obtain quietness when the wiring cover is closed, which is comparable to that of a rotary damper, even though the cost can be reduced. Further, when the wiring cover is lifted and opened from the closed state, it can be opened lightly with the support of the elastic urging force of the stroke type damper. Further, since it is difficult for a load to be applied to the operating pin of the stroke type damper from an oblique direction, the stroke type damper can be arranged at a position closer to the shaft support portion. The following effects can be achieved by sliding and releasing the diagonal load that is originally applied to the damper body.

According to the configuration of (2), since it is difficult for a load to be applied to the operating pin of the stroke type damper from an oblique direction, the stroke type damper can be arranged at a position closer to the shaft support portion. In particular, the upper end of the working pin is a hemispherical contact portion, and the receiving surface with which the upper end of the working pin of the wiring cover is in contact is a downwardly convex arc surface, so that the sliding between the working pin and the wiring cover receiving surface is formed. The dynamic resistance can be significantly reduced. In addition, the durability of the stroke type damper can be improved.

According to the configuration of (3), when the wiring cover is completely closed and the wiring cover is in a horizontal state, the contact portion of the working pin comes into contact with the horizontal plane of the receiving surface, so that only an axial force acts on the working pin. Even if the posture is maintained for a long time, no excessive force is applied to the stroke type damper.

According to the configuration of (4), even if the wiring cover is long, the rigidity is high, so that the bending can be prevented, and the rotation operation without rattling of the shaft support can be realized. When fitting the support shaft of the bearing tool into the shaft groove of the wiring cover, it is easy because the outer diameter of the support shaft is elastically reduced due to the presence of the slit, and the support shaft is the original after fitting. Since it tries to restore the shape, the tightly fitted state can be maintained.

According to the configuration of (5), the length of the cover body can be appropriately cut to form a wiring cover having a desired length, and a notch is formed in the shaft groove of the cover body according to the position where the support tool is arranged. This is sufficient, the degree of freedom in design is high, and the lateral displacement of the wiring cover can be regulated by accepting the support base in the notch.

It is a perspective view which shows an example of the furniture or furniture to which the cover device of the wiring duct which concerns on this invention is applied. It is an enlarged partial perspective view of a wiring duct. It is an exploded perspective view which shows the relationship between a bearing and a wiring cover. It is a partial vertical sectional view which shows the state which fully opened the wiring cover in the vertical state. It is a partial vertical cross-sectional view which shows the state which the receiving surface of a wiring cover is in contact with the actuating pin of a stroke type damper in the middle of closing a wiring cover. It is a partial vertical sectional view which shows the state which the wiring cover is fully closed in a horizontal state.

Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. FIG. 1 shows bench A as an example of furniture or furniture to which the wiring duct cover device of the present invention is applied, FIGS. 3 is a wiring duct, 4 is a duct opening, 5 is a wiring cover, and 6 is a support tool.

In the bench A of the present embodiment, the top plates 1 and 1 are supported by the legs 2 at intervals in the front and rear, and a duct opening 4 is provided between the front and rear top plates 1 and 1. The configuration is the same, but the height of the leg 2 is set to be low. The structure is such that the wiring covers 5 and 5 are arranged in the front and rear of the duct opening 4, respectively. The wiring cover 5 is divided into half the width of the top plate 1 and arranged.

In the wiring duct cover device of the present invention, the wiring cover 5 is provided in the duct opening 4 provided at an appropriate position in furniture or furniture so as to be rotatable and openable, and at least two support tools 6 arranged in the duct opening 4 are provided. The base end portion of the wiring cover 5 is supported by the shaft support portion 7 so as to be vertically rotatable, and a stroke type damper 8 is placed in the vicinity of the shaft support portion 7 of the support tool 6 with its operating pin 9 facing up and down. Arranged in the direction, the operating pin 9 abuts on the receiving surface 10 of the wiring cover 5 from the tilted state to the horizontal state of the wiring cover 5 at a predetermined angle, and is elastically attached in the direction of opening the wiring cover 5. It is characterized by the momentum.

Specifically, as shown in FIGS. 3 and 4, the wiring cover 5 has a structure in which caps 12 are attached to both ends of the cover main body 11, and the cover main body 11 is made of an extruded aluminum mold material. A cap 12, which is a synthetic resin molded product, is fixed to an end cut to a predetermined length. Here, the receiving surface 10 may be formed of a lower surface formed on the entire surface of the back surface side of the cover main body 11, but may be composed of a contact piece provided at least in a portion close to the shaft support portion 7. Is also good. Further, a shaft groove 13 having a substantially C-shaped cross section is formed at the base of the cover body 11, and a dovetail groove 14 is formed at the tip thereof, and a soft piece 15 made of synthetic resin or rubber is attached. ..

The bearing 6 is a molded product of synthetic resin, and a support 16 projecting upward is provided at one end thereof, and a support shaft 17 is integrally provided on the support 16 with both ends projecting sideways. There is. That is, the support base 16 and the support shaft 17 form a substantially T-shape. Further, the support shaft 17 is formed with a slit 18 that opens upward and extends in the axial direction so that the outer diameter of the support shaft 17 can be elastically reduced. Further, the support tool 6 is integrally provided with a support cylinder 19 for holding the stroke type damper 8 in the vertical direction at a position near the support shaft 17, and is buffered at a position away from the support cylinder 19. Holds the member 20.

In the shaft support portion 7, a support shaft 17 having a slit formed in the support tool 6 with the axial direction oriented horizontally is rotatably and tightly fitted into the shaft groove 13 having a substantially C-shaped cross section of the cover main body 11. It is composed. Here, a notch 21 for receiving the support 16 of the bearing 6 is formed by cutting in a part of the shaft groove 13 of the cover main body 11. Then, with the wiring cover 5 in a vertical state or with the tip tilted forward, while accepting the support base 16 in the notch portion 21, both ends of the support shaft 17 are fitted into the shaft grooves 13 on both sides of the notch portion 21. do. When the support shaft 17 is fitted into the shaft groove 13, the outer diameter of the support shaft 17 is elastically reduced by the presence of the slit 18, so that the support shaft 17 can be fitted relatively easily. Since it is elastically restored to its original shape, it is tightly fitted in the shaft groove 13, and the wiring cover 5 is supported by the bearing 6 so as to be rotatable with an appropriate frictional resistance. Here, the position where the notch 21 is formed is arbitrary, and is determined according to the position where the support 6 is attached. Then, the edge portion of the notch portion 21 comes into contact with the support base 16 to regulate the lateral movement of the wiring cover 5.

Since the stroke type damper 8 is normally used by applying a load in the axial direction, it is not used for a rotating member, but the present invention is devised so that a load other than the axial direction is not applied to the operating pin 9 as much as possible. .. One of them is to arrange the stroke type damper 8 at a position near the shaft support portion 7. The second is that the upper end portion of the actuating pin 9 of the stroke type damper 8 is a hemispherical contact portion 22, and the receiving surface 10 with which the upper end portion of the actuating pin 9 of the wiring cover 5 abuts is convex downward. It is said that the arc surface 23 of the above is used.

In the present invention, "at a position near the shaft support" means that the distance between the center of the shaft support 7 and the stroke damper 8 is within 1/3, more preferably within 1/4 of the width of the cover body 11. Is the distance.

The mouth of the support cylinder 19 of the support tool 6 is provided with a friction contact portion or an engaging protrusion so that the stroke type damper 8 is not dropped even if it is turned upside down with the stroke damper 8 inserted, and the bottom portion thereof. Is provided with a hole 24 so that a tool such as a screwdriver can be inserted through the hole 24 when the stroke type damper 8 is removed from the support cylinder 19. Further, when the weight of the wiring cover 5 is heavy, a rubber shock absorber 25 is interposed at the bottom of the support cylinder 19 in order to alleviate the initial impact. Here, the shock absorber 25 has a structure in which a flat cylindrical rubber material having a diameter smaller than that of the discs is sandwiched between two discs and laminated.

In the present embodiment, a support rod 26 having the same height as the top plate 1 is passed between the legs 2 and 2 and fixed to the center of the duct opening 4, the duct opening 4 is divided into front and rear parts, and the duct opening 4 is divided into front and rear parts. A holding member 27 is provided between the front and rear top plates 1 and 1 so as to intersect the lower surface side of the support rod 26, and the support tool 6 is attached to the upper surface of the holding member 27.

FIG. 4 shows a state in which the wiring cover 5 is in a vertical state and the duct opening 4 is fully opened. Here, in the present invention, "vertical" is a concept including substantially vertical. FIG. 5 shows a state in which the receiving surface 10 of the cover main body 11 is in contact with the upper end of the operating pin 9 of the stroke type damper 8 while the wiring cover 5 is being rotated and closed. FIG. 6 shows a state in which the wiring cover 5 is in a horizontal state and the duct opening 4 is fully closed. From the state of FIG. 5 to the state of FIG. 6, the hemispherical contact portion 22 of the operating pin 9 of the stroke type damper 8 is in sliding contact with the arcuate surface 23 of the receiving surface 10 of the cover body 11, and the wiring cover. A part of the rotational moment due to the weight of the wiring cover 5 is offset, and the wiring cover 5 is slowly closed even when the hand is released. In the fully closed state of FIG. 6, the receiving surface 10 of the wiring cover 5 is in contact with the cushioning member 20. Here, when the wiring cover 5 is completely closed, the hemispherical contact portion 22 of the operating pin 9 is finally brought into a horizontal plane through the arc surface 23 of the receiving surface 10 in the process of closing the wiring cover 5. It will be in a state of contact.

Instead of providing the cushioning member 20, a leaf spring portion 6A integrally molded with the support tool 6 and having elasticity in the vertical direction is used to hit the wiring cover 5, specifically, the free end portion of the cover body 11. You may make contact.

Further, in order to hold the wiring cover 5 in the fully open state (vertical state) or to give a click feeling, a claw piece 28 is provided at the end of the support tool 6, and the wiring cover 5, that is, a cover. A recess 29 for engaging the claw piece 28 is provided at the base end of the main body 11.

When the wiring cover 5 in the fully closed state is opened, the operating pin 9 of the stroke type damper 8 is elastically urged in the protruding direction, so that the opening operation becomes lighter.

A bench,
1 Top plate,
2 legs,
3 Wiring duct,
4 Duct opening,
5 Wiring cover,
6 Bearings,
7 axis branch,
8-stroke damper,
9 Acting pin,
10 receiving surface,
11 Cover body,
12 caps,
13 shaft groove,
14 ant groove,
15 soft pieces,
16 support stand,
17 Support shaft,
18 slits,
19 Support tube,
20 cushioning member,
21 notch,
22 Contact part,
23 Arc plane,
24 holes,
25 buffer,
26 Support rod,
27 Holding member,
28 nail pieces,
29 Recess.

Claims (5)

A wiring duct cover device in which a wiring cover is provided so as to be rotatable and openable at a duct opening provided at an appropriate position in furniture or furniture. The base end portion is supported by a shaft support portion so as to be vertically rotatable, and a stroke type damper is supported in the vertical direction near the shaft support portion of the support tool, and a hemispherical contact portion is provided at the upper end portion. The actuating pins of the stroke damper are arranged upward so that the actuating pins come into contact with the receiving surface of the wiring cover until the wiring cover is tilted at a predetermined angle to a horizontal state to open the wiring cover. A wiring duct cover device characterized by elastic urging. The wiring duct cover device according to claim 1, wherein the receiving surface to which the contact portion of the operating pin of the wiring cover abuts is a downwardly convex arc surface. The wiring duct cover device according to claim 2, wherein the wiring cover is in a horizontal state when it is completely closed, and the contact portion of the operating pin is in contact with the horizontal surface of the receiving surface. The cover body of the wiring cover is made of an extruded aluminum mold material, the bearing is a molded product of synthetic resin, and the shaft support is formed in a shaft groove having a substantially C-shaped cross section formed at the base of the cover body. The wiring duct cover device according to any one of claims 1 to 3, which has a structure in which a support shaft having a slit formed in a support portion with an axial direction oriented horizontally is rotatably tightly fitted. The support shaft of the support tool is provided on a support base projecting upward from the support tool with both ends protruding sideways, and a notch for receiving the support base is provided in a part of the shaft groove of the cover body. The wiring duct cover device according to claim 4, wherein the lateral movement of the wiring cover is restricted by contacting the edge of the notch with the support base.

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