JP7283996B2 - concatenated structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a connecting structure that can be used for assembling various structures such as fixtures.

2. Description of the Related Art Conventionally, as fixtures used in stores and the like, tubular supports are connected to each other to form a frame, and shelves, plate members, and the like are provided on the frame. For example, Japanese Patent Laid-Open No. 2002-100000 discloses a connection structure for such fixture posts. The connection structure described in Patent Document 1 includes a connection mechanism that is welded to one support and inserted into the other support. a base material, an adjusting male screw which is screwed into the female thread of the base material and has a hole formed in the end face of the concave portion side for inserting a wrench, and a concave part of the base material arranged above the adjusting male screw, It comprises a lock member that moves up and down by screwing in and out, and a holding member that is attached to the substrate while holding the lock member so that it can move up and down. With the connecting mechanism inserted into the other post, the adjusting male screw is screwed out from the hole having the female thread of the base material, thereby raising the locking member relative to the base material and causing the locking member to move to the other post. By pressing the inside of the cylinder in the opening direction, the other strut is connected.

Japanese Patent No. 4272003

However, the connection structure described in Patent Document 1 has a problem that the connection mechanism must be welded to the strut, which is troublesome. Moreover, the connecting mechanism is composed of a base material, an adjusting male screw, a locking member, and a holding member, and there is a problem that the structure of the connecting structure is complicated. SUMMARY OF THE INVENTION The present invention has been made in view of the above problem, and an object of the present invention is to provide a connecting structure that allows a connecting member to be easily connected to a surface to be connected.

A connecting structure according to the present invention is such that a connecting member is connected to a connecting surface of a wall via a joint member, the wall has a first hole opening to the connecting surface, and the connecting member is a cylindrical part having a hollow inside at least at the end on the side connected to the non-connecting surface, the cylindrical part having an end face having an opening communicating with the hollow part and the connected surface one of the connecting member and the wall has a second hole opening to the contacting surface of the connecting member or the connected surface of the wall, and the other has the second hole. The joint member includes a base portion that is inserted into the hollow portion from the opening of the cylindrical portion and is fitted to the cylindrical portion over the entire length, and a base portion that is provided on one end side of the base portion. a hook portion that is engaged in the first hole in a retaining state, and the base portion of the joint member and the cylindrical portion of the connecting member are connected by a connecting means.

In order to assemble the connection structure of the present invention, first, the hook portion of the joint member is inserted into the first hole of the connection surface of the wall to lock the joint member to the connection surface, and then the tube of the connection member is inserted. By inserting the base portion of the joint member from the opening into the hollow portion of the shaped portion and fitting it, and by fitting the projection of the connecting member into the second hole of the connecting surface, the contact surface of the connecting member becomes the connecting surface. abut. Then, the base portion of the joint member and the cylindrical portion of the connecting member are connected by the connecting means.

According to the connecting structure, the connecting member can be easily connected to the connecting surface by simply locking the joint member to the connecting surface, fitting the connecting member to the joint member, and fixing the connecting member with the fixing means. can be done.

The connecting means is provided in a second screw hole provided in the cylindrical portion of the connecting member and the base portion of the joint member in a state where the base portion of the joint member and the cylindrical portion of the connecting member are fitted. A screw may pass through a first screw hole provided.

The second screw hole may be provided at a position shifted in a direction away from the connecting surface from the position at which the first screw hole is provided.

According to the connecting structure of the present invention, the connecting member can be easily connected to the connecting surface.

1 is a cross-sectional view of a portion of a connecting structure according to an embodiment of the invention; FIG. It is an exploded perspective view of a connection structure. FIG. 4 is a rear view of a portion of a strut having a connecting surface; (A) of the connecting member is a partial side view, (B) is a front view, and (C) is a partial plan view. (A) is a side view, (B) is a rear view, (C) is a plan view, (D) is a bottom view, and (E) is a front view of the joint member. FIG. 2 is a cross-sectional view taken along line AA of FIG. 1; FIG. 4 is an enlarged view of a part of the joint member and the connecting member; It is explanatory drawing which shows an example of the frame of fixtures.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a connection structure 1 of one embodiment of the invention. In the connection structure 1 of the present embodiment, the connection member 20 is connected to the connected surface 11 of the wall 10 via the joint member 30 . The connection structure 1 of this embodiment is used for a frame 2 of furniture or fixtures. For example, as shown in FIG. , it is used for connecting the strut 3 and the connecting member 20 . Note that the connection structure 1 is not limited to the frame 2 of furniture or fixtures, and may be used, for example, to connect pillars and crosspieces of a wooden building, and the application is not limited.

The connecting surface 11 is part of one surface of a plate-like wall 10 that constitutes a plate-like member, a pillar, or the like. The wall 10 has a pair of first holes 12, 12 and a second hole 13, and the pair of first holes 12, 12 and the second hole 13 penetrate from the connected surface 11 to the other surface. , and open on the connection surface 11 and the other surface. On the other side of the wall 10, there is a space 14 in which hook portions 36, 36 (described later) of the joint member 30 inserted into the pair of first holes 12, 12 are positioned. In this embodiment, the connecting surface 11 is a part of the outer surface of the peripheral wall 10 of the support 3, and the support 3 is a tubular prism having a space 14 inside. In the following description, the direction in which the connecting member 20 and the joint member 30 are inserted into the connecting surface 11 is called the front side or the tip side, and the side opposite to the front side is called the rear side. Moreover, let the direction where the support|pillar 3 is extended be an up-down direction.

The first holes 12, 12 are vertically long rectangular holes having the same shape, and are arranged side by side with a predetermined interval in the horizontal direction in FIG. be stopped. The second hole 13 is a laterally long rectangular hole, is provided below the pair of first holes 12, 12, and is fitted with a projection 24 of the connecting member 20, which will be described later. The pair of first holes 12, 12 and the second hole 13 are provided line-symmetrically with the same axis of symmetry.

As shown in FIGS. 4(A) to 4(C), the connecting member 20 has a cylindrical portion 21 having a hollow portion 22 inside at least at the end portion of the side connected to the connecting surface 11, In this embodiment, it is a cylindrical bar having a square cross-sectional shape and having a cylindrical portion 21 formed over its entire length. The end surface 23 of the connecting member 20 has an opening 23 a communicating with the hollow portion 22 and an annular contact surface 23 b contacting the connected surface 11 . A protrusion 24 protruding along the length direction of the connecting member 20 is provided on the lower side of the contact surface 23b. The protrusion 24 has a thickness and a width corresponding to the second hole 13 of the peripheral wall 10 of the post 3 , and the protrusion 24 is fitted into the second hole 13 to restrict movement of the connecting member 20 in the vertical and horizontal directions. As shown in FIG. 1 , when the protrusion 24 is fitted into the second hole 13 , the contact surface 23 b of the connecting member 20 contacts the connected surface 11 . A second screw hole 25 for passing a screw 40 is formed in the bottom wall 33 of the connecting member 20 . Details of the second screw hole 25 will be described later.

As shown in FIGS. 5(A) to 5(E), the joint member 30 is inserted into the hollow portion 22 through the opening 23a of the tubular portion 21 of the connecting member 20 and fitted over the entire length of the tubular portion 21. It is provided with a base portion 31 and a pair of hook portions 36 , 36 which are provided on one end side of the base portion 31 and are engaged with the first holes 12 , 12 of the connecting surface 11 so as to be retained. The base portion 31 has a substantially U shape in the rear view shown in FIG. . As shown in FIG. 5C, the rear end of the bottom wall 33 and the rear ends of the pair of side walls 32, 32 are aligned, and the front ends of the side walls 32, 32 protrude beyond the front end of the bottom wall 33. The length of the bottom wall 33 in the front-rear direction is shorter than the length of the pair of side walls 32 , 32 in the front-rear direction. The base portion 31 has a width and a height corresponding to the hollow portion 22 of the member of the connecting member 20, and when the base portion 31 is fitted to the cylindrical portion 21 of the connecting member 20, the outer surfaces and upper surfaces of the side walls 32, 32, The bottom surface of the bottom wall 33 contacts the inner surface of the tubular portion 21 of the connecting member 20 . The left side of the joint member 30 appears symmetrical to the right side shown in FIG. 5(A).

A nut 34 having a screw hole 34a is attached to the inner surface of the bottom wall 33 by welding or the like. A first screw hole 35 for communicating with the screw hole 34 a is formed in the bottom wall 33 at a position corresponding to the screw hole 34 a of the nut 34 . Details of the first screw hole 35 will be described later.

As shown in FIG. 5(A), each of the side walls 32, 32 has a substantially rectangular shape when viewed from the side, and the upper corners on the front side are obliquely cut off at an angle of approximately 30 degrees with respect to the vertical direction. This is the inclined portion 32a. A notch 32b is formed at the lower edges of the side walls 32, 32 and in front of the front end of the bottom wall 33 so that the metal plate can be easily bent when the joint member 30 is manufactured.

Each hook portion 36, 36 is provided continuously with the pair of side walls 32, 32, and has the same thickness as the side walls 32, 32 and a thickness that can be inserted into the pair of first holes 12, 12. ing. As shown in FIG. 5(A), the hook portions 36, 36 have a base end portion 37 provided at the lower end position of the inclined portion 32a of the side walls 32, 32, and a locking portion provided at the front end surface of the base end portion 37. 38.

As shown in FIG. 1, the vertical length d2 of the base end portion 37 is set smaller than the length d10 of the first holes 12, 12 (FIG. 3). The locking portion 38 has a length d3 in the vertical direction set longer than the length d10 of the first holes 12, 12, and has a semi-elliptical shape with an arcuate tip side when viewed from the side. , an upper end portion 38a projecting upward from the base end portion 37, and a lower end portion 38b projecting downward from the base end portion 37. As shown in FIG. The rear end surface 38c of the lower end portion 38b of the engaging portion 38 and the front end surface 32c of the side walls 32, 32 are opposed to each other, and the distance d4 between the opposed surfaces is equal to the thickness d11 of the peripheral wall 10 of the column 3 (FIG. 1). is set slightly larger than

As shown in FIG. 1 , when the hook portions 36 , 36 are locked in the first holes 12 , 12 of the peripheral wall 10 of the support 3 , the locking portion 38 is positioned inside the peripheral wall 10 of the support 3 . , the base end portion 37 is positioned in the first holes 12, 12, and the space between the rear end surface 38c of the lower end portion 38b of the locking portion 38 and the front end surface 32c of the side walls 32, 32 The peripheral wall 10 of the support 3 is positioned between the upper rear end surface of the engaging portion 38 and the front end surface of the inclined portion 32a of the side walls 32,32.

Next, coupling between the base portion 31 of the joint member 30 and the cylindrical portion 21 of the connecting member 20 will be described. As shown in FIGS. 1 and 7, the joint member 30 is engaged with the first holes 12, 12 of the peripheral wall 10 of the post 3, and the projection 24 of the connecting member 20 is engaged with the second hole 13 of the peripheral wall 10 of the post 3. , and the second screw hole 25 of the connecting member 20 is aligned with the screw hole of the nut 34 of the joint member 30 in a state where the base portion 31 of the joint member 30 and the cylindrical portion 21 of the connecting member 20 are fitted. 34a and the first screw hole 35, and the second screw hole 25 of the connecting member 20 and the screw hole 34a of the nut 34 of the joint member 30 and the first screw hole 35 communicate with each other. It is a series. As shown in FIG. 1, the screw 40 is passed through the second screw hole 25 of the connecting member 20 and the first screw hole 35 of the joint member 30, and screwed into the screw hole 34a of the nut 34. The joint member 30 and the connecting member 20 are coupled.

The screw 40 is a countersunk screw having a threaded portion 41 and a head portion 42. The head portion 42 has a flat bottom surface and a truncated cone-shaped bearing surface 42a. The second screw hole 25 and the first screw hole 35 can integrally accommodate the head 42 of the countersunk screw, and have a truncated cone shape corresponding to the shape of the bearing surface 42a of the head 42 of the countersunk screw. The tapered hole is counterbored. The diameter d1 (FIG. 5) of the upper surface of the first screw hole 35 is set slightly larger than the diameter d40 (FIG. 1) of the threaded portion 41 of the screw 40 so that the threaded portion 41 of the screw 40 can pass therethrough. ing.

Specifically, as shown in FIG. 7 , the front end surfaces 32 c of the side walls 32 , 32 of the joint member 30 abut against the connected surface 11 of the peripheral wall 10 of the support 3 , and are connected to the connected surface 11 of the peripheral wall 10 of the support 3 . With the contact surface 23b of the member 20 in contact, the second screw hole 25 of the connecting member 20 is further away from the connecting surface 11 than the position where the first screw hole 35 of the joint member 30 is provided. The length from the end surface 23 of the connecting member 20 to the axial center of the second screw hole 25 is set so that the second screw hole 25 is provided at a position shifted in the direction.

The displacement distance D, that is, the distance D between the axis of the second screw hole 25 and the axis of the first screw hole 35 is the diameter d1 of the upper surface of the first screw hole 35 and the screw 40 between the diameter d40 of the screw portion 41 and the thickness d11 of the peripheral wall 10 of the support 3 and the rear end surface 38c of the lower end portion 38b of the locking portion 38 of the joint member 30 and the front end surface 32c of the side walls 32, 32 It is set shorter than the sum of the difference from the distance d4. That is, when the screw 40 is screwed into the nut 34, the distance D is the difference between the diameter d1 of the upper surface of the first screw hole 35 and the diameter d40 of the threaded portion 41 of the screw 40, The difference between the thickness d11 of the joint member 30 and the distance d4 of the joint member 30 is set to a distance that can absorb the displacement. In this embodiment, the screw 40 is a countersunk screw with a nominal diameter of M6. 3.4 mm, the vertical length of the second screw hole 25 of the connecting member 20 is 1.4 mm, the vertical length of the first screw hole 35 of the joint member 30 is 2 mm, the first The diameter d1 of the upper surface of the screw hole 35 is set to 6.5 mm, the thickness d11 of the peripheral wall 10 of the support 3 is set to 1.6 mm, the distance d4 is set to 2 mm, and the deviation distance D is set to 0.6 mm. For convenience of explanation, FIG. 7 shows the displacement distance D enlarged, but the figure is not on an actual scale.

When the threaded portion 41 of the screw 40 is passed through the second screw hole 25 of the connecting member 20 and the first screw hole 35 of the joint member 30 in this order and screwed into the screw hole 34a of the nut 34, the head of the screw 40 is Portion 42 enters second screw hole 25 . At this time, the bearing surface 42a of the head 42 of the screw 40 hits the inner surface 25a of the second screw hole 25 of the connecting member 20 on the side of the connected surface 11, and presses the inner surface 25a toward the connected surface 11, that is, toward the front side. . Thereby, the connecting member 20 is firmly pressed against the connected surface 11 . Also, the bearing surface 42a of the head 42 of the screw 40 hits the inner surface 35a on the rear end side of the first screw hole 35 of the joint member 30, and presses the inner surface 35a in the direction away from the connecting surface 11, that is, toward the rear side. As a result, the joint member 30 moves away from the connected surface 11 until the rear end surfaces 38c of the lower ends 38b of the hooks 36, 36 come into contact with the peripheral wall 10 of the post 3. As shown in FIG. In this manner, the connecting member 20 and the joint member 30 are connected by the screw 40 in a state in which the second screw hole 25 and the first screw hole 35 are provided at displaced positions. 20 is rigidly connected to the strut 3;

Next, a method of connecting the connecting member 20 to the connecting surface 11 of the wall 10 via the joint member 30 to configure the connecting structure 1 will be described. First, as shown in FIG. 2, the upper ends 38a of the locking portions 38 of the hooks 36, 36 of the joint member 30 are inserted into the first holes 12, 12 of the peripheral wall 10 of the support 3 from an obliquely upward direction. It is made to pass through the holes 12, 12 of 1 and enter the space 14 inside the column 3. At this time, the inclined portions 32a of the side walls 32, 32 of the joint member 30 widen the gaps between the upper ends 38a of the engaging portions 38 of the hook portions 36, 36 and the side walls 32, 32. The upper end portion 38a of is easily inserted into the first holes 12, 12. As shown in FIG.

Then, by rotating the joint member 30 downward, the lower end portion 38b of the locking portion 38 of the hook portions 36, 36 is inserted into the first holes 12, 12 and passes through the first holes 12, 12. do. Since the front ends of the hooks 36, 36 are substantially arc-shaped, the lower ends 38b of the engaging portions 38 of the hooks 36, 36 do not contact the peripheral walls 10 around the first holes 12, 12, and thus the first holes 12, 12 are closed. It passes through the holes 12 and 12 and is located in the space 14 inside the column 3 . As a result, the joint member 30 is prevented from coming out of the first holes 12 , 12 . When the joint member 30 is further lowered, the peripheral wall 10 of the post 3 is positioned between the rear end surface 38c of the lower end portion 38b of the locking portion 38 and the front end surfaces 32c of the side walls 32, 32, and the lower surface of the base end portion 37 is It is supported by contacting the lower peripheral wall 10 of the first holes 12 , 12 . In this state, since the base ends 37 of the hooks 36, 36 are shorter than the length d10 of the first holes 12, 12, the joint member 30 can move vertically.

Next, the base portion 31 of the joint member 30 is inserted through the opening 23a of the tubular portion 21 of the connecting member 20, and the base portion 31 is fitted into the hollow portion 22 of the tubular portion 21 over its entire length. The protrusion 24 of the connecting member 20 is inserted into the second hole 13 of the peripheral wall 10 of the support 3 . This restricts the vertical movement of the joint member 30 and the connecting member 20 .

Then, the threaded portion 41 of the screw 40 is screwed into the threaded hole 34 a of the nut 34 through the second threaded hole 25 of the connecting member 20 and the first threaded hole 35 of the joint member 30 . At this time, the second screw hole 25 of the connecting member 20 is at a position shifted in the direction away from the connected surface 11 from the position where the first screw hole 35 of the joint member 30 is provided. The seat surface 42a of the head 42 presses the inner surface 35a on the rear end side of the first screw hole 35 of the joint member 30 in the direction away from the connecting surface 11, i.e., the rear side. While moving slightly, the inner surface 25 a of the second screw hole 25 of the connecting member 20 on the side of the connecting surface 11 is pressed in a direction approaching the connecting surface 11 . The difference between the diameter d1 of the upper surface of the first screw hole 35 and the diameter d40 of the threaded portion 41 of the screw 40, and the difference between the thickness d11 of the peripheral wall 10 of the support 3 and the distance d4 of the joint member 30 causes the deviation. The screw 40 is screwed into the nut 34 while absorbing the distance D. As a result, the connecting member 20 is pressed against the connecting surface 11 and firmly connected.

According to the above-described embodiment, the connecting member 20 can be easily connected simply by locking the joint member 30 to the connected surface 11, fitting the connecting member 20 to the joint member 30, and connecting with a connecting means such as the screw 40. can be connected to the connected surface 11 . In addition, since it is not necessary to weld the joint member 30 to the connected surface 11 of the column 3 in advance, the labor for assembling is simplified.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention. For example, in the present embodiment, the second hole 13 is provided in the wall 10 and the protrusion 24 is provided in the contact surface 23b of the connecting member 20. 23 b , and the projection 24 may be provided on the connecting surface 11 of the wall 10 .

Also, in the present embodiment, the second hole 13 is provided below the pair of first holes 12, 12, but may be provided above the pair of first holes 12, 12. , 12 may be provided side by side. In this case, the protrusion 24 of the connecting member 20 fitted in the second hole 13 is provided at a position corresponding to the second hole 13 .

Further, in the present embodiment, the first holes 12, 12 are provided so that the length direction of the first holes 12, 12 is aligned with the length direction of the support column 3. On the other hand, the first holes 12, 12 may be provided so that the length direction of the first holes 12, 12 is along the oblique direction. In this case, the connecting member 20 is attached to the strut 3 while being rotated around the longitudinal direction.

Furthermore, the cross-sectional shape of the connecting member 20 is not limited to a square shape, and may be of any shape as long as the base portion 31 of the joint member 30 can be fitted into the cylindrical portion 21 of the connecting member 20. For example, the cross-sectional shape of the connecting member 20 may be rectangular. may be circular.

1 Connection structure 3 Support 10 Wall 11 Connected surfaces 12, 12 First hole 13 Second hole 20 Connection member 21 Cylindrical part 22 Hollow part 23 End surface 23a Opening 23b Contact surface 24 Projection 25 For second screw Hole 30 Joint member 31 Base portion 35 First screw holes 36, 36 Hook portion 38 Locking portion 38a Upper end portion 38b Lower end portion 40 Screw (coupling means)

Claims (3)

A connection structure in which a connection member is connected to a connection surface of a wall via a joint member,
The wall has a first hole opening to the connecting surface,
The connecting member has a cylindrical portion having a hollow portion therein at least at an end thereof connected to the connecting surface. A contact surface that contacts the connected surface,
Either the connecting member or the wall is provided with a second hole that opens to the contact surface of the connecting member or the connected surface of the wall, and the other is provided with a projection that is fitted into the second hole. ,
The joint member includes a base portion which is inserted into the hollow portion through an opening of the cylindrical portion and is fitted over the entire length of the cylindrical portion, and a first hole provided on one end side of the base portion which prevents the joint member from coming off. and a hook portion to be locked,
A connection structure in which a base portion of the joint member and a cylindrical portion of the connection member are connected by a connecting means. The coupling means are
In a state where the base of the joint member and the tubular portion of the connecting member are fitted together, a second screw hole provided in the tubular portion of the connecting member and a first screw hole provided in the base of the joint member. 2. A connecting structure according to claim 1, wherein the connecting structure is a screw passing through a screw hole. 3. The connection structure according to claim 2, wherein said second screw hole is provided at a position shifted in a direction away from said connecting surface from a position at which said first screw hole is provided.

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