JP2010213803A - Mounting structure of leg for furniture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new mounting structure in which there is no fault which is seen in the mounting structure of a conventional leg for furniture and a cylindrical leg is attached to a bracket for leg mounting which supports a member such as a top plate. <P>SOLUTION: In the mounting structure of the leg which is fixed by forming the bracket 1 for leg mounting, which supports the top plate, etc. in the mounting part, in a leg mounting part such as the top plate of a desk and attaching the leg to the bracket 1, the bracket 1 has as a leg mounting part 54 a fixed part 4 equipped with a slope guide, in which a leg tube body 6 is inserted, and a movable part 5 equipped with a slide slope 51 slidably combined to the slope guide 41 of the fixed part, the movable part 5 is positioned by making a slide means move it along the slope guide 41 of the fixed part in the slide slope 51, and the leg is attached to the bracket by pressing the outside face of the leg mounting part 54 by a fixed part 4 and the movable part 5 to the inside of the leg tube body 6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention is for attaching a leg of a furniture such as a table or a desk to a mounting bracket provided at a part to which the leg such as a top plate is attached (hereinafter referred to as a leg mounting part) with a strong and high accuracy. Regarding the structure, more specifically, the leg tube body is firmly and accurately coupled to the mounting bracket without using a screw mounting ring or the like for attaching the leg welded to the inside of the leg tube body. It is related with the leg mounting structure which can do.

  Conventionally, for example, in a desk having a structure in which a top plate is supported by columnar legs, the top plate and legs are lightened, and a frame member is provided on the back of the top plate to supplement the coupling strength of both members. In order to make the coupling between the leg attachment portion and the leg rigid, a metal member such as a leg attachment bracket for supporting the top plate is known at the corner portion of the frame member.

  In particular, when it is necessary for the design or for design reasons, for example, to place the legs with the four corner edges of the rectangular top plate or the outside as the leg attachment part, the leg attachment strength (especially from the lateral direction). In order to maintain the stability against the acting force, it is necessary to firmly integrate the lower frame of the top plate, the mounting bracket and the leg.

As an example of a technique for this purpose, a technique has been adopted in which a leg mounting bracket is fixed to the upper surface of the leg cylinder body by a screwing ring provided by welding or the like inside the leg cylinder body, thereby securing a coupling strength. Yes.
Also known are a flange portion that is fixed to a leg mounting portion of the top plate, and a leg mounting bracket that includes a leg mounting tube portion on the lower surface of the flange portion (see Patent Documents 1 to 3). .

  However, in the known method, the heat of welding the screw ring for screwing the mounting bracket to the inside of the leg tube body causes a weld mark on the leg body surface, detracting from aesthetics, and has a special cross-sectional structure. A leg cylinder is required, resulting in high manufacturing costs and material costs. Furthermore, the known leg mounting bracket has a problem in that a solid leg mounting state cannot be maintained.

  On the other hand, in order to use the screwed ring welded to the inside of the leg tube body in a stable manner corresponding to the threaded portion of the leg mounting bracket that supports the top plate, high positioning accuracy is required for mounting the ring. If this condition is not satisfied, it is not possible to obtain a highly rigid unity between the top plate and the legs via the bracket, and there is a problem that rattling occurs during use.

  In addition, in the case of a thin cylindrical leg that cannot be welded internally with a screw ring, the above-mentioned coupling method cannot be adopted in the first place, and the frame attached to the lower surface of the top plate and the leg are firmly coupled to make it rigid. It was quite difficult.

Japanese Examined Patent Publication No. 7-49012 Japanese Patent No. 3685048 Japanese Patent No. 3610035

  Therefore, the present invention provides a new mounting structure in which a cylindrical leg is attached to a leg mounting bracket that supports a member such as a top plate, which does not have the disadvantages found in conventional furniture leg mounting structures. Let it be an issue.

  The structure of the leg mounting structure of the present invention, which has been made for the purpose of solving the above problems, is provided with a leg mounting bracket that supports a top plate or the like at the mounting site, such as a desk top plate, and the leg is attached to the bracket. In the leg mounting structure for mounting and fixing, the bracket includes a fixed portion having a slope guide into which the leg tube body is inserted, and a slide slope that is slidably combined with the slope guide of the fixed portion. The movable portion is provided as a leg attachment portion, and the movable portion is moved and positioned on the slide slope along the slope guide of the fixed portion by sliding means, and the outer surface of the leg attachment portion by the fixed portion and the movable portion is positioned. The leg is attached to the bracket by being pressed against the inner surface of the leg cylinder.

  In the present invention, in the structure of the leg mounting portion, the slope guide of the fixed portion and the slide slope of the movable portion corresponding to the guide are placed in a slidable loosely-fitted state by a combination of a convex shape and a concave shape. On the other hand, by moving the movable part so as to approach, a wedge action for increasing the outer peripheral diameter of the combined fixed part and movable part is achieved.

  The fixed portion of the leg mounting portion is formed with a receiving peripheral edge that contacts the entire circumference of the inner peripheral surface of the upper end portion of the leg tube body and a flange portion that contacts the upper end surface of the leg tube body. It is preferable.

  Further, in the above leg mounting structure, a part of the wall surface of the leg tube body is bulged to the inner surface side at the portion that contacts the fixing portion of the leg tube body, and the outer peripheral surface (leg tube) of the fixing portion The leg tube body is prevented from being inclined by the punching taper portion for die cutting attached to the inner surface of the body).

  Further, in the mounting structure of the present invention, as an example of the slide means for moving the movable portion, a screw member provided through the fixed portion and the movable portion from the outside of the mounting bracket and screwed to the movable portion. Is used. Examples of other means for pulling (sliding) the movable part toward the fixed part include a wire such as a wire coupled to the movable part, freely connecting to a lower end of a screw threaded through the fixed part, The movable part can be brought close to the fixed part by pulling up the wire by the rotation of raising the screw.

  The bracket for mounting a leg used in the mounting structure of the present invention includes a fixed portion having a slope guide inserted into the leg cylinder, and a slide slope that is slidably combined with the slope guide of the fixed portion. The movable part is provided as a leg attachment part, and the movable part is moved and positioned by the sliding means along the slope guide of the fixed part on the slide slope, thereby positioning the whole leg attachment part by the fixed part and the movable part. The outer surface is strongly pressed against the inner surface of the leg tube body.

  In the leg mounting structure of the present invention, a mounting bracket for supporting a top plate or the like at the mounting portion is provided on a leg mounting portion such as a top plate of a desk, and the leg mounting structure for mounting and fixing the leg to the bracket. The mounting bracket includes, as leg mounting portions, a fixed portion having a slope guide inserted into the leg cylinder and a movable portion having a slide slope slidably combined with the slope guide of the fixed portion. The movable portion is positioned by moving the movable portion along the slope guide of the fixed portion by sliding means on the slide slope, and pressing the outer surface of the leg mounting portion by the fixed portion and the movable portion against the inner surface of the leg cylinder body Since the leg cylinder is attached to the mounting bracket, the outer surface of the leg mounting portion (fixed portion and movable portion) of the mounting bracket that supports the top plate or the like is firmly pressed and fixed to the inner surface of the leg cylindrical body. thing It can be.

  In particular, in the leg mounting structure of the present invention, since the abutting portion that slightly bulges inside the leg tube body is formed on the side (wall surface) that abuts on the back surface of the fixed portion of the leg tube body, the outer peripheral surface of the fixing portion is Even if it is formed in a tapered shape for punching, the leg tube body can be firmly fixed to the mounting bracket with high precision perpendicularity.

  Furthermore, according to the present invention, it is possible to easily and surely attach the leg firmly to the leg mounting bracket even to a thin leg cylinder that cannot be welded with the screw ring.

The side view which decomposed | disassembled and showed an example of this invention leg attachment structure. The expanded side view of the state which assembled the leg mounting structure of this invention of FIG. The right view which represented the leg cylinder body in the cross section in the leg attachment structure of FIG. The bottom view which looked at the leg attachment part which abbreviate | omitted the movable part of FIG. 2 from the lower end side of the leg cylinder. The right view of the leg cylinder used for the leg mounting structure of this invention of FIGS. The disassembled perspective view of the state which turned over the 2nd example of the bracket for leg attachments used for this invention. FIG. 8 is a perspective view in which a fixed portion and a movable portion of the bracket of FIG. 7 are assembled to constitute a leg mounting portion. The perspective view of the state in which the leg cylinder was attached to the bracket for attachment of FIG. 7, FIG.

Embodiments of the present invention will be described below with reference to the drawings.
In the example shown in FIG. 1 to FIG. 5, 1 includes a flat top plate mounting portion 2 that is screwed and fixed to the back surface of the top plate, and the short beam portion 3 is integrally formed on the lower surface of the mounting portion 2. The leg mounting bracket of the present invention (hereinafter simply referred to as “bracket”) comprising a fixed portion 4 formed downward on the distal end side of the short beam portion 3 and a movable portion 5 that cooperates in combination with the fixed portion 4. Is the first example). Reference numeral 6 denotes a round pipe-like leg tube body in which the fixed portion 4 and the movable portion 5 are accommodated. In addition, the rear end of the short beam portion 3 in the bracket 1 in FIGS. A frame mounting portion 3b having a substantially L-shaped side cross section of 90 degrees is formed.

In the state in which the fixed portion 4 and the movable portion 5 are inserted into the leg tube body 6, the bracket 1 operates the screw rod 7 which is an example of the sliding means to couple the leg tube body 6, so that the screw rod 7 The insertion hole 8 passes through the fixing portion 4 from the upper surface of the short beam portion 3 at a position corresponding to the fixing portion 4, and a female screw portion 5 a into which the male screw portion 7 a of the screw 7 is screwed is formed in the movable portion 5. Yes.
With this configuration, the fixed portion 4 integral with the short beam portion 3 and the movable portion 5 that cooperates in combination with the fixed portion 4 function as the leg mounting portion 54 in the bracket 1.

  That is, the leg attaching portion 54 is formed by screwing the fixed portion 4 and the movable portion 5 into the leg cylinder 6 and the male screw portion 7a of the screw rod 7 into the female screw 5a provided in the movable portion 5 shallowly. By inserting the screw rod 7 into the leg tube body 6 in a loosely connected state and fastening the screw rod 7, the screw rod 7 is fixedly attached to the inside of the leg tube body 6.

  As described above, the fixing portion 4 is coupled so as to cooperate with the movable portion 5 by screwing the screw rod 7, which is an example of a sliding means, into the female screw portion 5 a provided in the movable portion 5. Is done. Therefore, the fixed portion 4 is provided with a convex slope guide 41 formed in a tapered shape so that the movable portion 5 can slide up and down by forward and reverse rotation of the screw rod 7. In addition, as shown in FIG. 1 (see also FIGS. 2 and 5), the slope guide 41 includes a tapered guide surface 41a having a substantially mountain-shaped cross section. On the other hand, the movable part 5 to be combined with the fixed part 4 is formed with a guided groove 51 having a substantially concave flat cross section formed in an inversely tapered shape so as to correspond to the guide surface 41a. Acts as a slide surface 51a corresponding to the guide surface 41a. In the present invention, the convex slope guide 41 provided on the fixed portion 4 and the concave guided groove 51 provided on the movable portion can be provided on the other side, contrary to the above embodiment. .

The fixed portion 4 and the movable portion 5 have the following configuration in addition to the tapered guide surface 41a and the reverse tapered slide surface 51a.
That is, the opposite side (the side of the short beam portion 3) of the guide portion 41 a in the fixed portion 4 is formed on the arcuate contact surface 42 having a substantially arcuate cross section that contacts the inner wall surface of the leg cylinder 6. . A tongue-shaped contact surface 43 that protrudes downward from the lower end surface of the fixed portion 4 is formed at the lower portion of the substantially central portion of the contact surface 42.

  On the other hand, a receiving recess 53 for receiving the abutment surface 43 is formed at a portion of the movable portion 5 corresponding to the tongue-like abutment surface 43, and behind the slide surface 51a (right side in FIG. 1). The outer peripheral surface is formed on an arcuate contact surface 52 that contacts the inner peripheral surface of the leg cylinder 6.

  A leg mounting portion 54 is formed by the fixed portion 4 and the movable portion 5 having the above-described configuration. With the above-described configuration of the fixed portion 4 and the movable portion 5 in the leg attachment portion 54, when the screw rod 7 is rotated, the movable portion 5 can be slid upward or downward with respect to the fixed portion 4. As a result, the leg mounting portion 54 has arcuate contact surfaces 42 and 52 in which each of the fixed portion 4 and the movable portion 5 contacts the inner wall surface of the leg cylinder 6 and a tongue-like contact surface 43 as a whole. The outer diameter or width to be formed can be increased or decreased. In other words, by rotating the screw rod 7, the movable portion 5 is slid so as to approach the fixed portion 4, whereby the leg mounting portion 54 can be pressed against the inner surface of the leg cylinder 6. .

In the leg attachment portion 54, the fixing portion 4 has the following configuration in addition to the above basic configuration. That is, the upper end portion of the fixing portion 4 is formed in a flange-like portion 44 having an outer diameter commensurate with the outer diameter of the leg tube body 6 except for a portion integrated with the short beam portion 3. A receiving peripheral edge 44 a is formed on the lower surface side of the portion 44 so as to be in close contact with the inner surface 6 a of the upper end portion of the leg cylinder 6.
In addition, an inner edge 3 a parallel to the lower surface 44 b of the flange-shaped portion 44 is formed on the lower surface of the short beam portion 3 at a portion coupled to the fixing portion 4.

  On the other hand, the upper end portion of the leg tube body 6 fitted on the fixed portion 4 has a portion (inner edge 3a) in which the fixed portion 4 and the short beam portion 3 are combined to bulge downward in the leg tube body 6. A concave notch 6b is formed to receive the (part) (see FIGS. 1 and 5). Further, a screw insertion hole 6e for temporarily positioning and fixing the leg cylinder body 6 fitted into the fixing portion 4 is formed in the upper part of the leg cylinder body 6 below the notch 6b. A screw hole 45 for screwing a positioning screw 9 (see FIG. 8) is provided in the fixed portion 4.

  In the present invention, a contact bulging portion 6f is formed below the screw insertion hole 6e of the leg cylinder body 6 so that the wall surface of the leg cylinder body 6 bulges to the inside of the cylinder body. The abutment bulging portion 6f abuts on a shallow punching taper surface for die cutting formed on the surface of the fixed portion 4 on which the tongue-like contact surface 43 is provided. It is ensured that the leg cylinder 6 fitted into the leg mounting portion 45 is fixed in a vertical posture. By the way, if this bulging portion 6f is not present, the lower half side of the leg cylinder 6 is opened and adjusted by the action of the taper surface when the screw rod 7 is rotated and fastened and the movable portion 5 is called into the fixed portion 4. (Inclined to the left in FIG. 1).

  With the above configuration, when the leg cylinder 6 is attached and fixed to the bracket 1, (a) the inner edge 3a of the fixing part 4 and the notch 6b at the upper end of the leg cylinder 6, and (b) the arc shape of the fixing part 4 The contact surface 42 and the arcuate contact surface 52 of the movable portion 5 and the inner peripheral surface of the leg cylinder 6; (c) the lower surface 44b of the flange-like portion 44 of the fixed portion 4 and the receiving peripheral edge 44a and the leg cylinder body therebelow. The upper end surface 6c and the inner surface 6a at the upper end of 6 cooperate with each other to reliably and effectively suppress the rattling of the leg cylinder 6 in the inner and outer directions (left and right directions in FIGS. 1 and 2). Can do. Moreover, when the movable part 5 is called to the fixed part 4 side by the rotation of the screw rod 7, (d) the contact bulging part 6f provided on the leg cylinder 6 is formed on the tongue-like contact surface 43 of the fixed part 4. Since it contacts the vicinity, even if the screw rod 7 is tightened, the leg tube body 6 does not tilt (open outward) by the action of the taper of the fixing portion 4.

  On the other hand, for the rattling of the leg cylinder 6 in the left-right direction (perpendicular to the plane of FIG. 1 and FIG. 2), (e) the outer surface of the lower surface 44b of the flange-shaped portion 44 and the outer periphery of the receiving peripheral edge 44a. The left and right sides of the surface (in FIG. 1 and FIG. 2, the front side and the other side of the page), the upper end surface 6 c and the left and right sides of the inner surface 6 a at the upper end of the leg cylinder 6, (f) The vertical notch side edge 6d of the frame and the short beam part 3 positioned above the inner edge 3a of the short beam part 3 held by the side edge 6d and the vertical joint part 3c of the fixing part cooperate with each other. And the backlash between the bracket 1 and the leg cylinder 6 can be suppressed similarly to the above.

  In the present invention, since the configurations (a) to (f) are provided, it is possible to say that the play in the entire circumferential direction of the leg cylinder 6 with respect to the leg mounting portion 54 of the leg cylinder 6 is almost complete. In addition, since the verticality of the leg cylinder body 6 to be attached can be secured, the leg cylinder body 6 can be fixed to the bracket 1 vertically and firmly.

Next, an example of the attachment procedure of the attachment bracket 1 in the present embodiment will be described with reference to FIGS. 1 to 5 and FIGS. The bracket 1 shown in FIGS. 6 to 8 is a second example of the bracket in the present invention that does not include the frame attachment portion 3b included in the bracket 1 shown in FIGS.
First, the fixed portion 4 and the movable portion 5 separated in FIG. 6 are integrally connected in advance by a screw rod 7 loosely screwed into the screw hole 5a through the insertion hole 8 (see FIG. 7, FIG. 6). FIG. 8 shows the leg mounting bracket of the present invention in an inverted state). Subsequently, the upper opening of the leg cylinder 6 is inserted into the leg mounting portion 54 in which the fixed portion 4 and the movable portion 5 are integrated (see FIG. 8). In FIG. 7, the leg cylinder 6 is shown in an inverted state.

  When the leg tube body 6 is inserted into the leg mounting portion 54, the screw insertion hole 6e of the leg tube body 6 and the screw hole 45 of the fixing portion 4 are positioned in a penetrating state, and the positioning screw 9 is screwed and tightened into the screw hole 45 The leg tube body 6 is positioned on the leg mounting portion 54 by wearing.

  Here, since the positioning screw 9 is screwed into the screw hole 45 of the fixed portion 4 in the leg mounting portion 54, the screw rod 7 that tightens the fixed portion 4 and the movable portion 5 is temporarily caused by some factor. The leg tube body 6 does not fall off the mounting portion 54 even if it is loosened.

  Next, the screw rod 7 loosely screwed into the screw hole 5a through the insertion hole 8 penetrating the top plate mounting portion 2 and the fixing portion 4 is tightened up by an appropriate screwing means, and the movable portion 5 is moved to its cover. When the guide groove 51 slides and rises along the guide surface 41 provided on the fixed portion 4, the contact surface including the tongue-shaped contact surface 43 of the fixed portion 4 by the cooperative action of the fixed portion 4 and the movable portion 5. Since the outer diameter formed by 42 and the contact surface 52 of the movable portion 5 is increased, the outer surface of the leg mounting portion 54 is firmly pressed against the inner wall surface of the leg cylinder 6, and the leg mounting portion 54 is in contact with the leg mounting portion 54. The cylindrical body 6 can be fixed in a vertical posture.

  The above-described leg mounting structure of the present invention is not limited to the above-described embodiment, but for mounting a leg or a leg-like column on a leg mounting part such as a furniture such as a desk or chair, for example, a cabinet or a chair. It can be implemented as a structure.

  In the above-described embodiment, the leg mounting bracket 1 of the present invention is applied to a top plate such as a desk. Therefore, the leg mounting portion 54 (the movable portion 4 and the fixed portion 5) has a flat top plate mounting portion. 2 and the short beam portion 3 for connecting and integrating the fixing portion 5 in the leg attachment portion 54 are provided. However, in the present invention, although the mounting portion 2 and the short beam portion 3 integral with the mounting portion 2 are not shown, for example, a short columnar portion orthogonal to the fixed portion 5 can be formed, and the columnar portion can be inserted into the short columnar portion. A bracket for connecting a vertical pipe-shaped leg cylinder and a horizontal pipe-shaped horizontal member orthogonally or crosswise by inserting and connecting tubular horizontal members (for example, pipe-like beams). Can be deployed as

  The present invention is as described above, and in a leg mounting structure such as a desk top plate, the leg mounting bracket includes a fixed portion having a slope guide inserted into the leg cylinder, and a slope of the fixed portion. A movable portion having a slide slope that is slidably assembled with the guide is provided as a leg mounting portion, and the movable portion is moved by the slide means along the slope guide of the fixed portion on the slide slope and positioned. Since the leg is attached to the mounting bracket by pressing the outer surface of the leg mounting portion formed by the fixed portion and the movable portion against the inner surface of the leg tube body, the leg mounting portion of the mounting bracket that supports the top plate ( The outer surface of the fixed part and the movable part) can be firmly pressed and fixed to the inner surface of the leg cylinder. In particular, in the leg mounting structure of the present invention, since the abutting portion that slightly bulges inside the leg tube body is formed on the side (wall surface) that abuts on the back surface of the fixed portion of the leg tube body, the outer peripheral surface of the fixing portion is Even if it is formed in a tapered shape for punching, the leg cylinder can be firmly fixed to the mounting bracket with a high degree of vertical accuracy. Is extremely useful.

DESCRIPTION OF SYMBOLS 1 Leg mounting bracket 2 Top plate mounting part 3 Short beam part 4 Fixed part 5 Movable part
54 Leg mount
44a Perimeter
41 Slope guide of fixed part 4
51 Sliding slope of movable part 5 6 Leg cylinder
6f Contact bulge

Claims (6)

  A leg mounting bracket for supporting a top plate or the like at a mounting portion of a leg mounting portion such as a top plate of a desk, and a leg mounting structure in which a leg is mounted and fixed to the bracket. A fixed portion having a slope guide into which the guide is inserted and a movable portion having a slide slope that is slidably combined with the slope guide of the fixed portion as a leg mounting portion, and the movable portion is a slide slope In this case, the positioning unit is moved by the sliding means along the inclined surface guide of the fixed part and positioned, and the outer surface of the leg mounting part by the fixed part and the movable part is pressed against the inner surface of the leg tube body to fix the leg to the bracket. Furniture leg mounting structure, characterized in that it can be mounted.   The leg mounting structure according to claim 1, wherein a contact portion in which a part of a wall surface of the leg tube body is bulged to the inner surface side is provided at a portion that contacts the fixed portion of the leg tube body.   The fixing portion is provided with a screw hole for positioning through the screw insertion hole of the leg tube body, and the positioning screw is inserted into the screw hole through the screw insertion hole so that the fixing portion and the leg cylinder body are positioned. The leg mounting structure according to claim 1 or 2.   4. The leg mounting structure according to claim 2, wherein the bulging contact portion and the screw insertion hole provided in the leg cylinder are positioned on the back side of the leg cylinder.   A mounting portion that is attached to the top plate or the like, a fixing portion that includes a tapered slope guide that is integrated with the mounting portion and is inserted into the leg tube body, and a slidable combination with respect to the slope guide of the fixing portion A leg mounting bracket comprising: a movable portion having a reverse tapered slide slope, and the fixed portion and the movable portion as leg mounting portions. By combining the slope guide of the fixed part and the slide slope of the movable part corresponding to the guide into a slidable loose fit state of the convex part and the concave part, and moving the movable part so as to approach the fixed part, The leg mounting bracket according to claim 5, wherein the outer peripheral diameter of the leg mounting portion by the combined fixed portion and movable portion is increased so as to act as a wedge that is crimped to the inner surface of the leg cylinder.

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