Assembled furniture frame

Abstract

To provide a frame body of knockdown furniture that can prevent a rigidity decline and the play in the knockdown furniture, by suppressing rotation displacement around the shaft center of a beam member for a frame member, even in the occasion of a twisting force added to the beam member.SOLUTION: A frame body 1 includes: a frame member 10L; a first beam member 21 that is put across the frame member 10L; and a fitting member 30 that connects the first beam member 21 and the frame member 10L. The fitting member 30 comprises: a sheet metal member 31 that is engaged with the frame member 10L; a first resin member 32 that is fixed on the sheet metal member 31; and a second resin member 33 that is fixed to the end part of the first beam member 21. With the insertion part 31d of the sheet metal member 31 inserted in the insertion groove 32e of the first resin member 32, relative rotation is regulated around the shaft center of the first beam member 21, of the sheet metal member 31 and the first resin member 32.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a frame for knockdown furniture, and more particularly to a technique for simplifying the work involved in assembling the frame for knockdown furniture. [Background technology]

[0002] Conventionally, there has been known prefabricated furniture constructed by connecting a plurality of frame members (see, for example, Patent Documents 1 and 2). The prefabricated furniture described in Patent Documents 1 and 2 describes a configuration in which a beam member is spanned horizontally across frame members whose axial center direction is oriented vertically, and a member such as a tabletop is placed on the beam member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-61759 A [Patent Document 2] JP 2007-195721 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the structure in which the beam member is connected to the frame member as in the above-mentioned patent document, when a torsional force is applied to the beam member, the beam member may be displaced in a rotational motion about an axis relative to the frame member. Such a rotational motion of the beam member causes a decrease in rigidity and a rattle in the assembled furniture.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and the problem which the present invention aims to solve is to provide a frame body for assembly furniture which can prevent a decrease in rigidity and rattling in the assembly furniture by suppressing the rotational displacement of the beam member about its axis relative to the frame member even when a torsional force is applied to the beam member. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a frame for knockdown furniture having the following configuration.

[0007] The present invention comprises a plurality of frame members which are square tube members extending in a vertical direction, a beam member which is a square tube member extending in a horizontal direction and is bridged between adjacent frame members in parallel, and an assembly member which connects the beam member and the frame members, the assembly member having a hook portion which engages with a connecting hole formed in the frame members, and the beam member is The mounting member is accommodated inside the beam member so as to be displaceable in the axial direction; When the hook portion is engaged with the connecting hole, The screw member is inserted into the mounting member, and the frame member and the beam member are brought close to each other via the mounting member, so that the beam member is A frame body of an assembled furniture which is connected to the frame member. Effect of the Invention

[0008] The frame of the knockdown furniture according to the present invention described above has the following advantages.

[0009] According to the frame body of the prefabricated furniture of the present invention, even if a torsional force is applied to the beam member, the rotational displacement of the beam member about its axis relative to the frame member can be suppressed, thereby preventing a decrease in rigidity and rattling in the prefabricated furniture. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing an assembly furniture using a frame according to an embodiment of the present invention. [Diagram 2] 13 is a perspective view showing a connection structure of a beam member to a frame member by an assembly member. FIG. [Diagram 3] 4A is a perspective view showing a connecting structure between a second resin member and a beam member, and FIG. 4B is a perspective view showing a connecting structure between a sheet metal member and a first resin member. [Figure 4] 6A and 6B are top-down perspective views showing a second resin member. [Diagram 5] 11 is a perspective view showing a procedure for connecting a beam member to a frame member. FIG. [Figure 6] 6A to 6C are cross-sectional views showing a procedure for connecting a beam member to a frame member. [Figure 7] 4 is a cross-sectional view showing a connection structure of a beam member to a frame member. FIG. [Figure 8] FIG. 4 is a cross-sectional view showing a support structure for a sheet metal member in an assembly member. [Figure 9] FIG. 4 is a rear view showing a support structure for the sheet metal member in the assembly member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, with reference to FIG. 1, a frame body (hereinafter, simply referred to as a "frame body") 1 of a prefabricated furniture according to one embodiment of the present invention and prefabricated furniture 1A assembled using the frame body 1 will be described. In this specification, the direction of the frame body 1 is defined by the arrows shown in each figure. The frame body 1 according to this embodiment can be used to configure a wide variety of prefabricated furniture according to the user's wishes by assembling and arranging various options (additional parts, devices, etc.) inside. In addition, by connecting frame bodies 1 that configure the same or multiple types of prefabricated furniture, the user can freely customize the space.

[0012] The frame body 1 comprises a number of frame members (a first frame member 10S, a second frame member 10L, and a third frame member 10M) which are square tube members connected perpendicular to each other, a first connecting member 12 and a second connecting member 13 which are metal members which connect these frame members 10S, 10L, and 10M to each other, a first beam member 21 which spans between adjacent parallel second frame members 10L with its axial direction extending in the front-to-rear direction, and an assembly member 30 which connects the first beam member 21 and the second frame member 10L.

[0013] As shown in Fig. 1, the frame body 1 includes four first frame members 10S arranged in parallel along the front-rear direction, four second frame members 10L arranged in parallel along the up-down direction, and two third frame members 10M arranged in parallel along the left-right direction at the top of the frame body 1. The frame members 10S, 10L, and 10M are arranged perpendicular to each other in the frame body 1. More specifically, each of the first frame members 10S connects the upper end and the lower end of the second frame member 10L in the front-rear direction via a first connecting member 12 and a second connecting member 13. Moreover, the third frame member 10M connects the upper end of the second frame member 10L in the left-right direction via the first connecting member 12.

[0014] In this embodiment, the third frame member 10M is disposed only on the upper part of the frame body 1, but the third frame member 10M may also be provided on the lower part of the frame body 1. Moreover, it is also possible to provide only the third frame member 10M on the lower part of the frame body 1 in place of the first frame member 10S.

[0015] In the frame body 1, the frame members 10S, 10L, and 10M are formed to have substantially the same cross-sectional shape perpendicular to the axial direction, except that the lengths of the frame members 10S, 10L, and 10M are different from one another. Therefore, by standardizing the processing steps for manufacturing the frame members 10S, 10L, and 10M, it is possible to reduce processing costs, etc. In this embodiment, among the frame members 10S, 10L, and 10M, the first frame member 10S is formed to be the shortest and the second frame member 10L is formed to be the longest. In addition, the cross-sectional shape of each of the frame members 10S, 10L, and 10M in the frame body 1 is formed to be a common square shape with each side measuring several tens of millimeters.

[0016] As shown in Fig. 1, in the first frame member 10S, one of the four faces (the upper face of the lower first frame member 10S) has two small holes, i.e., connecting holes 11, opened at three locations. In the second frame member 10L, the connecting holes 11 are formed side by side in the axial direction in two adjacent faces out of the four faces. In the second frame member 10L, the connecting holes 11 are two small holes that open along the vertical direction and are provided close to each other and parallel to each other. The connecting holes 11 are used when assembling the first beam member 21 to the frame body 1.

[0017] The frame members 10S, 10L, and 10M are connected by a first connecting member 12 and a second connecting member 13. Specifically, as shown in Fig. 1, at the four upper corners of the frame body 1, the first frame member 10S, the second frame member 10L, and the third frame member 10M are each connected by one first connecting member 12. Also, at the four lower corners of the frame body 1, the first frame member 10S and the second frame member 10L are each connected by one second connecting member 13.

[0018] As shown in Fig. 1, a total of four leg members 14 are attached to the underside of the first frame member 10S at the bottom of the frame body 1. The frame body 1 can be placed horizontally on the floor surface by adjusting the extension length of each of the leg members 14 from the first frame member 10S. In addition, the frame body 1 has improved rigidity by connecting the center portions of the two first frame members 10S facing each other on the upper side with an intermediate frame member 15.

[0019] In the frame 1, first beam members 21, whose axial direction faces the front-rear direction, are attached to both the left and right sides of the second frame member 10L adjacent to the front and rear. The first beam member 21 is an example of a beam member according to the present invention. Specifically, as shown in Fig. 2, an end of the first beam member 21 and the second frame member 10L are connected via an assembly member 30. The first beam member 21, like each of the frame members 10S, 10L, and 10M, is a square tube member formed by bending a metal plate.

[0020] The knockdown furniture 1A according to this embodiment is configured as a desk unit. Specifically, in the frame 1, the support beam member 22 is connected to the center of the two first beam members 21 via the assembly member 30. Then, the knockdown furniture 1A is configured as a desk unit by fixing the top plate 51 to the upper surfaces of the two first beam members 21 and the support beam member.

[0021] Moreover, the central portions of the two first frame members 10S facing each other on the lower side of the frame body 1 are connected by an intermediate beam member 23. The intermediate beam member 23 and the support beam members 22 are joined by a support member 24, thereby forming a configuration in which the load applied to the top plate 25 is supported.

[0022] The type of prefabricated furniture constructed using the frame 1 is not limited to the desk unit according to this embodiment, and can be configured in a wide variety of ways according to the user's wishes. For example, by changing the options to be assembled to the frame 1, it is possible to configure the prefabricated furniture as a chair unit, an office automation equipment unit, a bookshelf unit, a wardrobe shelf unit, a display shelf unit, a dining table unit, a storage unit, etc.

[0023] Next, a connection structure of the first beam member 21 to the second frame member 10L by the mounting members 30 in the frame body 1 will be described with reference to Figures 2 to 9. Note that Figures 2 to 9 show the mounting members 30 at the left rear of the frame body 1. In this embodiment, all of the mounting members 30 are configured similarly.

[0024] As shown in Fig. 2, the assembly member 30 includes a sheet metal member 31, a first resin member 32, and a second resin member 33. As shown in Fig. 5, the first resin member 32 is assembled to the second frame member 10L via the sheet metal member 31. As shown in Fig. 3(a), the second resin member 33 is fixed to an end of the first beam member 21. In this state, the first resin member 32 and the second resin member 33 are connected by a screw member S and a nut member N, whereby the first beam member 21 is fixed to the second frame member 10L.

[0025] The sheet metal member 31 is formed by bending one metal plate as shown in Fig. 3(b). The sheet metal member 31 includes a base portion 31a fixed to the first resin member 32, a rising portion 31b that is vertically raised and bent relative to the base portion 31a, and two hook portions 31c that are formed by bending both sides of the rising portion 31b to the opposite side to the base portion 31a. The two hook portions 31c extend upward in the sheet metal member 31. The upper side of the connecting portion between the rising portion 31b and the hook portion 31c is formed as a contact surface 31g. A through hole 31f that penetrates the base portion 31a is opened in the approximate center of the base portion 31a.

[0026] In the sheet metal member 31, a first insertion portion 31d is formed between the base portion 31a and the rising portion 31b, the first insertion portion 31d being parallel to the surface in which the connecting hole 11 in the second frame member 10L is opened. Similarly, a second insertion portion 31e is formed at the upper end of the rising portion 31b, the second insertion portion 31e being parallel to the surface in which the connecting hole 11 in the second frame member 10L is opened.

[0027] The sheet metal member 31 is engaged with connecting holes 11 that open on opposing surfaces of the second frame member 10L (surfaces facing inward in the front-rear direction of the frame 1). In detail, as shown in Fig. 5, the two hook portions 31c are engaged with two narrow holes in the connecting hole 11, whereby the sheet metal member 31 is assembled to the second frame member 10L.

[0028] 3(b), the first resin member 32 is a member formed in a substantially plate shape. The first resin member 32 includes a plate-shaped support portion 32a, two inclined protrusions 32b erected at the front end of the support portion 32a, and two locking claws 32c formed on the opposite side of the inclined protrusions 32b. A first inclined surface 32g is formed on the upper surface of the inclined protrusions 32b, which is inclined downward toward the rear side (the outer side in the axial direction of the first beam member 21).

[0029] In the first resin member 32, a through hole 32d penetrating the support portion 32a is opened in the approximate center of the support portion 32a. Between the two inclined protrusions 32b, an abutment portion 32f is formed against which the tip of the base portion 31a of the sheet metal member 31 abuts. In addition, between the two locking claw portions 32c, an insertion groove 32e into which the first insertion portion 31d of the sheet metal member 31 can be inserted is formed.

[0030] As shown in Fig. 5, the first resin member 32 is fixed to the sheet metal member 31. Specifically, with the tip of the substrate portion 31a of the sheet metal member 31 abutting against the abutment portion 32f, the other end of the substrate portion 31a is locked to the locking claw portion 32c. At this time, as shown in Fig. 9, the first insertion portion 31d of the sheet metal member 31 is inserted into the insertion groove 32e of the first resin member 32. This restricts the relative rotation of the sheet metal member 31 and the first resin member 32 around a rotation axis whose axial direction is oriented in the front-rear direction (around the axis of the first beam member 21).

[0031] As shown in Fig. 2, the second resin member 33 is a rectangular columnar member fixed to the end of the first beam member 21. In detail, as shown by the dashed arrow in Fig. 3(b), the second resin member 33 is inserted in the axial direction of the first beam member 21 from an opening 21a at the end of the first beam member 21. A notched groove 21b is formed in the lower surface of the first beam member 21 near the opening 21a. Furthermore, an engaged hole 21c is opened in the lower surface of the first beam member 21 adjacent to the notched groove 21b.

[0032] As shown in Fig. 4(a) and (b), the second resin member 33 has a case portion 33a that defines the outer shape of the second resin member 33. A housing portion 33b that is a recess that houses the substrate portion 31a of the sheet metal member 31 and the first resin member 32 is formed on the lower surface of the second resin member 33. As shown in Fig. 6, a second inclined surface 33i that inclines downward toward the rear side (outside in the axial direction of the first beam member 21) is formed on the upper surface (lower surface of the second resin member 33) of the housing portion 33b. The first inclined surface 32g of the first resin member 32 and the second inclined surface 33i of the second resin member 33 come into contact with each other when the first resin member 32 and the second resin member 33 are assembled as shown in Fig. 7.

[0033] The rear end surface of the second resin member 33 is formed with an inserted portion 33c which is a recess into which the rising portion 31b of the sheet metal member 31 is inserted. The front end portion on the lower surface of the second resin member 33 is formed with an engaging protrusion 33d which protrudes downward. When the second resin member 33 is inserted into the opening 21a of the first beam member 21, the engaging protrusion 33d engages with the engaged hole 21c as shown in FIG. 7, whereby the second resin member 33 is fixed to the first beam member 21.

[0034] A nut insertion portion 33e for inserting the nut member N is formed below the inserted portion 33c on the rear end surface of the second resin member 33. As shown in Fig. 5, the nut member N inserted into the nut insertion portion 33e from the rear of the second resin member 33 abuts against the inner walls of the nut insertion portion 33e at the front, rear, left and right sides, thereby restricting relative displacement and fixing the nut member N inside the second resin member 33. Below the portion where the nut member N is fixed, a through hole 33g through which the screw member S is inserted is opened.

[0035] As shown in Fig. 4(b), two abutment portions 33f are formed downward on the upper surface of the inserted portion 33c. As shown in Fig. 8, when the first resin member 32 and the second resin member 33 are assembled, the abutment portions 33f abut against the abutment surface 31g of the sheet metal member 31. This restricts the relative displacement of the second resin member 33 with respect to the sheet metal member 31.

[0036] In the second resin member 33, a second insertion groove 33h into which the second insertion portion 31e of the sheet metal member 31 can be inserted is formed at an upper end of the inserted portion 33c. When the first resin member 32 and the second resin member 33 are assembled, the second insertion portion 31e is inserted into the second insertion groove 33h, thereby restricting the relative rotation of the sheet metal member 31 and the second resin member 33 about a rotation axis whose axial direction is oriented in the front-rear direction (about the axis of the first beam member 21).

[0037] The second resin member 33 is joined to the sheet metal member 31 and the first resin member 32 in a state where it is fixed to the end of the first beam member 21. Specifically, as shown in Fig. 5, the first resin member 32 and the sheet metal member 31 are fixed, and in a state where the hook portion 31c of the sheet metal member 31 is engaged with the connecting hole 11, the first beam member 21 and the second resin member 33 are placed on the first resin member 32 and the sheet metal member 31 from above. At this time, the substrate portion 31a of the sheet metal member 31 and the first resin member 32 are inserted into the cutout groove 21b and are accommodated in the accommodation portion 33b of the second resin member 33 as shown in Fig. 7.

[0038] As described above, when the first beam member 21 and the second resin member 33 are placed on the first resin member 32 and the sheet metal member 31, the first inclined surface 32g of the first resin member 32 and the second inclined surface 33i of the second resin member 33 abut against each other as shown in Fig. 7. In addition, the abutting portion 33f of the second resin member 33 abuts against the abutted surface 31g of the sheet metal member 31. Furthermore, the second insertion portion 31e of the sheet metal member 31 is inserted into the second insertion groove 33h of the second resin member 33.

[0039] 5 and 7, screw members S are inserted from below into through holes 32d, 31f, and 33g, and screwed into nut members N fixed inside second resin member 33. As a result, sheet metal member 31, first resin member 32, and second resin member 33 are firmly connected, and first beam member 21 is assembled to second frame member 10L.

[0040] When the first beam member 21 is assembled to the second frame member 10L, as shown in Fig. 9, the first insertion portion 31d of the sheet metal member 31 is inserted into the insertion groove 32e of the first resin member 32. This restricts the relative rotation of the sheet metal member 31 and the first resin member 32 about the axis of the first beam member 21. This makes it possible to suppress the rotational displacement of the first beam member 21 about the axis relative to the second frame member 10L even if a torsional force is applied to the first beam member 21. In other words, it is possible to prevent a decrease in rigidity and rattling in the prefabricated furniture 1A.

[0041] When the first beam member 21 is assembled to the second frame member 10L, as shown in FIG. 9, the second insertion portion 31e of the sheet metal member 31 is inserted into the second insertion groove 33h of the second resin member 33. Therefore, the relative rotation of the sheet metal member 31 and the second resin member 33 around the axis of the first beam member 21 is restricted. This makes it possible to further suppress the rotational displacement of the first beam member 21 around the axis of the first beam member 21 relative to the second frame member 10L. In detail, since the rotational displacement of the first beam member 21 is restricted at a location farther away from the lower end of the hook portion 31c, which is the axis of the rotational displacement of the first beam member 21, the force generated in the second insertion portion 31e and the second insertion groove 33h when the first beam member 21 rotates can be reduced. It is also possible to configure the sheet metal member 31 without forming the second insertion portion 31e and the second insertion groove 33h without forming the second insertion groove 33h in the second resin member 33.

[0042] 7, when the first beam member 21 is assembled to the second frame member 10L, the first inclined surface 32g of the first resin member 32 and the second inclined surface 33i of the second resin member 33 come into sliding contact with each other. This defines the relative positions of the first resin member 32 and the second resin member 33 in the axial direction of the first beam member 21. In this way, according to the frame 1 according to this embodiment, the axial position of the first beam member 21 relative to the second frame member 10L can be easily determined.

[0043] 8, when the first beam member 21 is assembled to the second frame member 10L, the abutting portion 33f of the second resin member 33 comes into contact with the abutted surface 31g of the sheet metal member 31. In this manner, in this embodiment, the relative displacement of the second resin member 33 with respect to the sheet metal member 31 is restricted. As a result, when a downward load is applied to the first beam member 21, the assembly member 30 can integrally support the load, thereby preventing the bending load from concentrating on the sheet metal member 31.

[0044] As shown in FIG. 2, the connecting hole 11 formed in the second frame member 10L in the frame body 1 has two narrow holes that open along the vertical direction and are provided close to each other and parallel to each other. Also, as shown in FIG. 3(b), the sheet metal member 31 has two hook portions 31c formed by bending a single sheet metal. Then, the two hook portions 31c are engaged with the two narrow holes in the connecting hole 11, so that the sheet metal member 31 is assembled to the second frame member 10L. Thus, by forming the connecting hole 11 with two narrow holes, it is possible to ensure the connecting strength of the sheet metal member 31 more than by forming it with one hole. Also, by forming the connecting hole 11 with narrow holes, it is possible to prevent foreign matter from entering the connecting hole 11.

[0045] 5, in this embodiment, the hook portion 31c of the sheet metal member 31 extends upward. As a result, even if the first beam member 21 receives a force from below and the mounting member 30 is displaced upward, the sheet metal member 31 continues to engage with the connecting hole 11, so that the first beam member 21 can be prevented from coming off the second frame member 10L.

[0046] 7 and 8, in this embodiment, the lower surface of the mounting member 30 (the lower surfaces of the first resin member 32 and the second resin member 33) and the lower surface of the first beam member 21 are configured to be located on the same plane. This allows the lower surface of the first beam member 21 to be formed flat, improving the design of the prefabricated furniture 1A. [Explanation of symbols]

[0047] 1. Frame (frame for assembled furniture) 10S First frame member 10L Second frame member 10M Third frame member 11 Connection hole 12 First connecting member 13 Second connecting member 14 Leg member 15 Intermediate frame member 21 First beam member (beam member) 21a Opening 21b Notch groove 21c engaged hole 22 second beam member 23 intermediate beam member 24 support member 25 Top plate 30 Assembly parts 31 sheet metal member 31a substrate portion 31b Rising part 31c Hook part 31d First insertion part (insertion part) 31e second insertion portion 31f through hole 31g: abutment surface; 32: first resin member 32a Support part 32b Slanted projection part 32c Locking claw part 32d Through hole 32e Inserted groove 32f Abutted part 32g: first inclined surface; 33: second resin member 33a Case part 33b Storage part 33c Inserted part 33d Engagement projection 33e Nut insertion portion 33f Contact portion 33g Through hole 33h Second insertion groove 33i Second inclined surface S Screw member N Nut material

Claims

1. The present invention comprises a plurality of frame members which are square tube members extending in a vertical direction, beam members which are square tube members extending in a horizontal direction and which are bridged between adjacent frame members in parallel, and assembly members which connect the beam members and the frame members, The mounting member has a hook portion that engages with a connecting hole formed in the frame member, The beam member accommodates the mounting member so as to be displaceable in the axial direction inside the beam member, a screw member is inserted into the mounting member with the hook portion engaged with the connecting hole, and the frame member and the beam member are brought close to each other via the mounting member, thereby connecting the beam member to the frame member. The frame of assembled furniture.

2. The mounting member is formed with the hook portion facing upward. A frame for knockdown furniture according to claim 1.

3. The connecting holes are two parallel pores opening along a vertical direction, The hook portion is provided in two pieces corresponding to the two holes. A frame for knockdown furniture according to claim 1 or 2.

4. The hook portion is formed from a single piece of metal plate. A frame for knockdown furniture according to claim 3.

5. The beam member is connected to the frame member by inserting the screw member from below through the assembly member. A frame for knockdown furniture according to any one of claims 1 to 4.

6. The screw member is set so as not to protrude from a lower surface of the beam member when the beam member and the frame member are connected to each other. A frame for knockdown furniture according to any one of claims 1 to 5.

Images