JP2996453B2 - Furniture fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for furniture,
For example, the present invention relates to a method of fixing opposed plate-like members constituting furniture such as a side plate and a top plate or a side plate and a bottom plate of furniture.

[0002]

2. Description of the Related Art Conventionally, as a fixing device for furniture of this type, for example, when a top plate is fixed to a side plate of furniture,
At the end of the side plate, an embedded fixing part in the axial direction formed below the bolt member is embedded and fixed, and a hollow insertion part is formed in the upper part of the bolt member in the axial direction. A plurality of insertion pieces that can be moved forward and backward in the radial direction with a groove in the direction, and a locking projection is formed at the insertion end of each of the insertion pieces. An insertion hole for inserting the portion and an annular locking step for locking the locking projection of each of the insertion pieces above the insertion hole are formed in a shape larger than the hole shape of the insertion hole,
Then, when the insertion end of the insertion portion of the bolt member fixed to the side plate is press-fitted into the insertion hole of the top plate, each of the insertion pieces is radially inserted into the insertion hole through the corresponding locking projection. It is inserted in a state of being contracted inward, and the locking projections of the respective insertion pieces penetrate the insertion holes, and the respective insertion pieces are expanded outward in the radial direction. There is a structure in which a projection is locked to a locking step and a top plate is connected to a side plate with the bolt member.

[0003]

In the above-mentioned structure, it is necessary to perform a step-by-step drilling of an insertion hole having a large locking step on the top plate for inserting and locking the fitting portion of the bolt member into the top plate. In addition, since each locking projection is only locked to the locking step of the insertion hole by radial expansion and contraction of the respective insertion piece, each locking projection is held by the locking step. If the force is weak and the side plate and top plate are acted in the separating direction, each fitting piece will be reduced inward in the radial direction and each locking projection will easily come off from the locking step. There is a problem that the side plate and the top plate cannot be securely connected so as not to be easily separated.

[0004] The present invention has been made in view of such a point, and it is possible to reliably connect a fixed plate to a fixed plate with a strong holding force, and the fixed plate and the fixed plate act in a separating direction. In this case, the fixing members can be easily attached to the fixing plate and the plate to be fixed, and the insertion locking portions having different sizes can be formed step by step. An object of the present invention is to provide a fixing device for furniture which does not require a number of steps for drilling holes, and thus can easily and surely fix the fixing plates to each other.

[0005]

According to the present invention, there is provided a furniture fixing device comprising: a bolt member attached to a fixing plate; and a nut member embedded in the fixed plate fixed to the fixing plate and fitted with the bolt member. A pin member for fixing the bolt member and the nut member, and the bolt member is formed of a synthetic resin in a cylindrical shape, and has a buried fixing portion that is press-fitted into the fixing plate from an intermediate portion to one end portion, It has a fitting portion for fitting into the nut member from the middle portion to the other end portion, and the fitting portion is formed by being divided by an axial groove, and is outwardly formed on each of the insertion ends. The nut member is formed in a hollow cylindrical shape, having a plurality of insertion pieces having protruding locking projections, and an insertion hole formed by opening an end of the plurality of insertion pieces. The outer peripheral portion has a plurality of locking projections that are press-fitted into the fixed plate, An insertion hole for inserting the insertion portion of the bolt member therein is provided, and an insertion edge of the insertion hole for engaging the engagement protrusion of the plurality of insertion pieces is provided at an insertion end of the insertion hole. The pin member has a driving shaft portion that is inserted into the insertion hole of the insertion portion of the bolt member inserted through the insertion hole of the nut member and expands each insertion piece outward. It has a flange integrally formed at the base end of the shaft portion.

[0006]

In the fixing device for furniture according to the present invention, when the buried fixing portion of the bolt member is buried into the end portion of the fixing plate by press-fitting from one end portion, the buried fixing portion is prevented from falling off at the end portion of the fixing plate. , And the insertion portion of the bolt member is projected above the end of the fixing plate. Further, when the nut member was buried in the mounting portion of the fixed plate from the insertion end by press-fitting, the nut member was prevented from coming off from the fixed plate by a plurality of locking projections formed on the outer peripheral portion. Fixed to state.

When the insertion end of the fitting portion of the bolt member fixed to the fixing plate is press-fitted into the insertion hole of the nut member fixed to the plate to be fixed, each member inserted into the insertion hole is pressed. At the stop projection, each fitting insert is inserted in a state of being reduced inward in the radial direction, and each locking projection penetrates the insertion hole, and each fitting insert is radially inserted. It is expanded outward, each of the locking projections is locked to the locking edge of the insertion hole, and the fitting portion of the bolt member is locked in the insertion hole of the nut member.

When the driving shaft portion of the pin member is driven into the insertion hole of the bolt member and inserted, the respective insertion pieces of the bolt member are pressed outward by the driving shaft portion in the radial direction. ,
The locking projection of each of the insertion pieces is held in a state of being locked to the locking edge of the insertion hole.

Therefore, the inserted and locked state of the bolt member and the nut member is maintained by the driving shaft portion of the pin member, and the bolt member and the nut member are fixed without being separated from each other. Is securely held.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a bolt member, which is formed of a synthetic resin into a vertically long cylindrical shape, and a flange 2 is integrally formed at an intermediate portion thereof. In addition to the embedded fixing portion 3 which is press-fitted into the side plate A of the furniture as a fixing plate, the fitting portion 4 is inserted from the flange 2 at the intermediate portion to the other end portion of the furniture to be described later. .

In the buried fixing portion 3, a plurality of annular locking ridges 5 are integrally formed on an outer peripheral portion of the intermediate fixing portion 3 at one end from an intermediate portion thereof, leaving an annular concave portion 6 therebetween.
Each of the locking ridges 5 has an inclined portion 7 in which one end of the insertion portion 4 is inclined low and a horizontal portion 8 at a continuous portion connecting the inclined portion 7 and the annular concave portion 6. It is formed in a shape. The buried fixing portion 3 is formed with a communication groove 9 common to each of the annular recesses 6 by axially notching the locking projections 5 at the same location on both sides. Then, the embedded fixing portion 3 is prevented from coming off by the locking projections 5 in a state of being pressed into the side plate A of the furniture.

The fitting portion 4 has four fitting pieces divided by four cutting grooves 10 formed in the axial direction from the front, rear, right and left positions from the vicinity of the flange 2 to the other end. Each of the insertion pieces 11 is formed so as to be capable of expanding and contracting in the radial direction, and each of the insertion ends 12 has a locking portion 13 which protrudes outwardly and inclines and expands. The protrusions 14 are formed integrally, and guide surfaces 15 inclined inward are formed at the insertion ends of the locking protrusions 14, respectively. A hole 16 is formed. An elongated projection 17 is formed in the locking portion 13 of each of the locking projections 14 so as to protrude in the axial direction. Further, a continuous thread groove 18 is formed on the inner wall surface of each of the fitting pieces 11.

Reference numeral 19 denotes a nut member.
Is formed in a hollow cylindrical shape with a synthetic resin, and has a multi-stage annular member which is press-fitted into the outer peripheral portion from the insertion end portion 20 at one end to the top plate B of the furniture as a plate to be fixed at the other end portion. Stop projections 21 are formed integrally with each other, leaving an annular recess 22 therebetween,
Each of the locking ridges 21 has an inclined portion 23 in which the insertion end portion 20 is inclined low and a horizontal portion 24 at a continuous portion connecting the inclined portion 23 and the annular concave portion 22 to have a mountain-shaped cross section. Is formed. The nut member 19 has an insertion hole 25 through which the insertion portion 4 of the bolt member 1 is inserted.
At the end portion that is continuous with the insertion end portion 20, the plurality of fitting pieces
A locking edge 26 for locking the locking portion 13 of the 11 locking projections 14 is formed. A flange 27 is formed in an annular shape at the other end of the nut member 19. Then, the nuts 19 are prevented from coming off by the locking projections 21 in a state where the nut members 19 are pressed into the top plate B of the furniture.

Reference numeral 28 denotes a pin member.
And a driving shaft portion 29 that is inserted into the insertion hole 16 of the insertion portion 4 of the bolt member 1 inserted into the insertion hole 25 of the nut member 19 and expands each insertion piece 11 outward. The base end of the driving shaft 29 has a flange 30 integrally formed with the insertion end 12 of the bolt member 1. Also,
The driving shaft portion 29 is inserted from the substantially middle portion to the insertion end portion 31.
It has a tapered insertion portion 32 with a narrow side.
Further, the tapered insertion portion in the driving shaft portion 29
A thread groove 33 is formed from the upper end of 32 toward the flange 30 to engage with the thread groove 18 formed on the inner wall of each fitting piece 11 of the bolt member 1. Further, a + groove 34 for a + driver is formed in the center of the upper surface of the flange 30.

Next, the operation of the above embodiment will be described.

At the side plate A of the furniture, mounting holes 35 large enough to press-fit the bolt member 1 are formed in the left and right portions of the upper end surface a, and an adhesive is injected into the left and right mounting holes 35. In addition, mounting holes 36 large enough to press-fit the nut member 19 are formed in the left and right portions of the top plate B of the furniture at positions corresponding to the left and right mounting holes 35 of the side plate A. Inject adhesive into 36.

When the embedded fixing portion 3 of the bolt member 1 is inserted into the left and right mounting holes 35 of the side plate A by press-fitting from the insertion end of one end, the flanges 2 of the embedded fixing portion 3 are attached to the respective mounting holes. The buried fixing portion 3 is engaged with the opening edge of the opening 35, and is fixed in a state where it is prevented from being removed from the side plate A by the locking ridges 5 and the adhesive which are locked to the inner wall of each mounting hole 35. Then, the insertion portion 4 of the bolt member 1 is vertically projected onto the upper end surface a of the side plate A.

When the nut member 19 is buried in the left and right mounting holes 36 of the top plate B from the insertion end 20 by press-fitting, the flanges 27 at the ends of the nut member 19 are attached to the respective mounting holes.
The nut member 19 is engaged with the opening edge portion of the mounting hole 36, and each of the locking ridges 21 on the outer peripheral portion locked on the inner wall of the mounting hole 36.
And it is fixed in a state where it is prevented from falling off from the top plate B with an adhesive.

When the insertion ends 12 of the fitting portions 4 of the left and right bolt members 1 fixed to the side plate A are pressed into the insertion holes 25 of the left and right nut members 19 fixed to the top plate B, Locking projections of the right and left insertion portions 4 inserted into the insertion holes 25
At 14, the respective insertion pieces 11 are inserted in a state of being reduced inward in the radial direction, and the locking projections 14 of the left and right insertion sections 4 penetrate through the respective insertion holes 25, Each fitting piece 11 is expanded outward in the radial direction, and each locking projection 14
The locking portions 13 are locked to the locking edges 26 of the respective insertion holes 25, and the insertion portions 4 of the left and right bolt members 1 are locked in the insertion holes 25 of the right and left nut members 19. At this time, since the locking portion 13 of each of the left and right locking projections 14 has a projection 17,
And the locking edge 26 of each insertion hole 25 is locked in a stable state with good adhesion without surface contact.

Next, when the driving shaft portion 29 of the pin member 28 is driven into the insertion hole 16 of the bolt member 1 from the insertion portion 32 and inserted, the fitting of the bolt member 1 by the driving shaft portion 29 is performed. The insertion piece 11 is pressed outward in the radial direction, and the locking portion 13 of the locking projection 14 of each of the fitting pieces 11 is engaged with the locking edge of the insertion hole 25 of the nut member 19 via each projection 17. Locked tight against 26
11 is held so as not to be reduced inward in the radial direction. In this case, that is, when the driving shaft portion 29 of the pin member 28 is driven into the insertion hole 16 of the bolt member 1, the driving degree of the driving shaft portion 29 into the insertion hole 16 depends on the thickness of the top plate B. When the top plate B is relatively thin, the insertion hole 16
When the driving shaft portion 29 is driven deep inside, the pin member 28
Of the bolt member 1 is brought into contact with the insertion end portion 12 of the fitting portion 4 of the bolt member 1. The left and right mounting holes 36 formed in the top plate B are closed by the flanges 30 of the pin members 28, respectively, and depending on the thickness of the top plate B, the flange 30 and the top plate B
Is closed on the same surface as the upper surface portion of.

When the thickness of the top plate B is relatively large, if the driving shaft 29 of the pin member 28 is driven shallowly into the insertion hole 16 of the bolt member 1, the driving shaft 29 Bolt member 1
Of the pin member 28 is held in a state in which the flange 30 of the pin member 28 is separated upward from the insertion end portion 12 of the insertion portion 4 of the bolt member 1. Becomes Then, the left and right mounting holes 36 formed in the top plate B are closed by the flanges 30 of the pin members 28, respectively, and
Depending on the thickness of the top plate B, the flange 30 and the upper surface of the top plate B are closed in the same plane. Therefore, the pin member 28
The degree of driving of the bolt member 1 into the insertion hole 16 can sufficiently correspond to the thickness of the top plate B by the length of the driving shaft portion 29, and the top plate having a desired thickness with respect to the side plate A of the furniture. B can be connected.

When the driving shaft portion 29 of the pin member 28 is driven into the insertion hole 16 of the bolt member 1, the screw groove 33 of the driving shaft portion 29 engages with each fitting of the bolt member 1. The screw groove 18 formed on the inner wall of the insertion piece 11 is forcibly driven over and driven, and the driving position of the driving shaft portion 29 into the insertion hole 16 is
The driving shaft portion 29 is held at the set position by the engagement of the mutual thread grooves 18 and 33, and the driving shaft portion 29 is prevented from being pulled out. Therefore, the fixed state of the bolt member 1 and the nut member 19 is maintained by the driving shaft portion 29 of the pin member 28, these are connected without being separated from each other, and the side plate A and the top plate B of the furniture are securely connected. Is fixedly held.

Next, when disassembling the side plate A and the top plate B of the furniture, the + groove formed in the flange 30 of the pin member 28 is used.
When a screwdriver is fitted into the screwdriver 34 and the pin member 28 is rotated by the screwdriver in a direction in which the screw groove 33 of the driving shaft 29 is relaxed, the screw groove 33 of the driving shaft 29 is The driving shaft portion 29 is gradually moved away from the screw insertion portion 4 of the bolt member 1 while being disengaged from the screw groove 18 of each of the insertion pieces 11, so that when the mutual screw grooves 18, 33 are disengaged from each other. By pulling out the driving shaft portion 29 from the inside of the fitting portion 4 of the bolt member 1, the pressing of the fitting portion 4 of the fitting portion 4 toward the outside in the radial direction by the driving shaft portion 29 is released. Is done.

When both or one of the side plate A and the top plate B is pulled in the separating direction, each locking portion 13 of each fitting piece 11 of the bolt member 1 gradually comes off from the locking edge 26 of the nut member 19. At the same time, the large-sized portion of each of the locking projections 14 engages with the locking edge 26, and each of the fitting pieces 11 is reduced inward in the radial direction at each of the locking projections 14, Each locking projection 14 is a locking edge 26
And each of the locking projections 14 is slid in the pulling-out direction along the inner surface of each of the fitting pieces 11, and therefore,
The bolt member 1 is separated from the nut member 19, and the side plate A and the top plate B are disassembled.

[0026]

According to the present invention, the buried fixing portion of the bolt member is buried and fixed to the fixing plate by press fitting, the nut member is buried and fixed to the fixed plate by press fitting, and the bolt member is inserted into the insertion hole of the nut member. By inserting the insertion shaft portion of the pin member into the insertion hole of the insertion portion through the insertion portion including the plurality of insertion portions, the respective insertion portions of the insertion portion can be easily expanded. When opened, the locking projections of the fittings can be securely locked to the locking edges of the nut member, and the fixed plate having the nut member has a stronger holding force than the fixing plate having the bolt member. The fixing plate and the plate to be fixed do not come off easily even when they are acted in the separating direction, and the fixing plate and the plate to be fixed are fixed to each other. A member that can be easily attached, and a step-by-step drilling process for insertion locks of different sizes. The without requiring, therefore, opposite fixing plates mutually can be easily and reliably fixed in, and can provide a furniture fixation device capable of holding the secured state reliably.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an exploded state of a furniture fixing device according to an embodiment of the present invention.

FIG. 2 is a front view of the first connector according to the first embodiment;

FIG. 3 is a plan view of the same.

FIG. 4 is a front view of the second connector with a part cut away.

FIG. 5 is a plan view of the same.

FIG. 6 is a front view of the third connector according to the first embodiment;

FIG. 7 is a plan view of the same.

FIG. 8 is a perspective view showing a state in which the connecting plates are separated from each other.

FIG. 9 is a cross-sectional view showing the connection state of the above.

FIG. 10 is a sectional view showing another connection state of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bolt member 3 Embedded fixing part 4 Fitting part 10 Cut groove 11 Fitting piece 12 Insertion end 14 Locking projection 16 Inserting hole 19 Nut member 21 Locking ridge 25 Inserting hole 26 Locking edge 28 Pin member 29 Driving shaft 30 Flange A Fixed plate B Fixed plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16B 5/00-5/12 F16B 12/00-12/60 F16B 17/00-21/00 F16B 21 / 06-21/09

Claims (1)

(57) [Claims] 1. A bolt member attached to a fixing plate, a nut member embedded in a fixed plate fixed to the fixing plate and fitted with the bolt member, and a pin member fixing the bolt member and the nut member. The bolt member is formed of a synthetic resin in a cylindrical shape, and has a buried fixing portion which is press-fitted into the fixing plate from one end to a middle portion, and is inserted into the nut member from the middle portion to the other end. A plurality of insertion pieces, each of which is formed by being divided by an axial groove and each having an engagement projection projecting outward at each insertion end. And an insertion hole formed by opening an end portion of the plurality of fitting pieces. The nut member is formed in a hollow cylindrical shape, and has a plurality of stages of press-fitting the outer peripheral portion into the fixed plate. With a locking ridge,
An insertion hole for inserting the insertion portion of the bolt member therein is provided, and an insertion edge of the insertion hole is provided with a locking edge for locking the locking projection of the plurality of insertion pieces. The pin member has a driving shaft portion that is inserted into the insertion hole of the insertion portion of the bolt member inserted through the insertion hole of the nut member and expands each insertion piece outward. A fixing device for furniture, comprising a flange integrally formed at a base end of a shaft portion.