WO2015015603A1

WO2015015603A1 - Member-coupling structure, and assembly structure provided with same

Info

Publication number: WO2015015603A1
Application number: PCT/JP2013/070790
Authority: WO
Inventors: 浩介白井; 高橋　克実
Original assignee: 株式会社白井産業
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2015-02-05
Also published as: CN105431642B; WO2015015857A1; CN105431642A; HK1222425A1

Abstract

　A joint member (10) inserted into an assembly structure (41) is inserted through an opening of an engaging member (20) inserted into an assembly structure (42), and the joint member (10) is pressed against the engaging member (20) until the flat surfaces of the assembly structures (41, 42) come together. An elastically deformable hook part formed in the inner surface of the engaging member (20) and a joint-member-engaging part formed in the outer surface of the joint member (10) are thereby engaged together and the hook part elastically deforms and spreads, whereby the joint member (10) and the engaging member (20) can smoothly be coupled together with one touch. Therefore, an operation of strong force is not needed for an assembly operation, and assembly can be performed easily without using an assembly implement such as a screwdriver, even within a household.

Description

Member coupling structure and assembly structure including the same

The present invention relates to a versatile member joining structure that is simple to join and an assembly structure including the joining structure.

Assembling-type furniture is furniture that can be assembled in various forms by freely combining and connecting a plurality of plate materials, and is widely used due to its high versatility. Such assembly furniture is generally assembled by a user in accordance with the instructions in the home, so that it is required to be easily assembled without any special technique.

For example, in assembling a shelf, a frame is formed by the left and right side plates, top plate, and bottom plate, a back plate is attached to the frame, and several shelf plates are attached to the frame. As an example of a conventional assembly method, the plate members are assembled at right angles to each other and screwed or screwed. However, the screw has to be inserted from the back side of the plate material. For this reason, it involves a troublesome work such as turning over the plate material many times during the assembly, which is a problem in performing the assembly work easily. Further, when the plate members are coupled by screwing, a force is required for screwing them using a screwdriver, which is a burden for women. Furthermore, since this screw head appears on the outer surface of the assembly furniture and the appearance is poor and the commercial value is lowered, this screw head is concealed with a decorative cover. However, even if the screw head can be concealed, the decorative cover and the plate material do not fit in design, which causes a problem that the quality and high quality of the shelf are impaired.

As a first prior art for solving the above problem, there is a joint material described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-48049), and this joint material is at least both side edges of a base portion made of a hard resin. A surface layer made of a soft resin is formed on the surface of the joint material, and a plurality of protrusions are provided on the surface of the joint material so as to be fitted over the groove provided on the joint target member side. Thereby, a long member is simply attached via a joint material without using a screw or a screw, and the screw head is prevented from being exposed to the long member surface.

Further, as a second conventional technique, there is a joint structure described in Patent Document 2 (Japanese Patent Laid-Open No. 2009-47231), and when the engaging convex portion of the joint member is passed from the outside of the opening portion toward the engaging concave portion, Since the first claw portion elastically expands and passes through the engaging convex portion, the engaging convex portion can be easily inserted into the engaging concave portion without using a tool or the like. And if an engagement convex part is inserted in an engagement recessed part, extraction will be blocked | prevented by the 1st nail | claw part which returned to the original position by the elastic effect, and it is comprised so that an engagement state may not be cancelled | released.

JP 2010-48049 A

JP 2009-47231 A

In the first prior art described in Patent Document 1, a soft resin surface layer is formed on at least both side edges of a base portion made of a hard resin. When the joint material is repeatedly attached and detached, the surface layer is There is a possibility that the joint material may be detached from the concave groove due to deterioration due to wear. In addition, when the overlap between the crest of the base formed of hard resin at the center of the joint material and the crest of the groove that fits in the center is large, the base and the ditch are While it is difficult to fit, there is a problem that when the overlap between the crests of the base and the crests of the groove is small, the fitting becomes loose and the joint material is easily detached from the groove.

That is, since the central part of the joint material is made of hard resin, the rigidity is high, and when the rigidity of the member in which the groove is formed is high, it is practically difficult to fit the joint material into the groove. . In other words, in the long member mounting structure described in this publication, the entire joint material is made of hard resin and soft resin is formed on both side edges, but the concave grooves are formed directly on the member. The rigidity directly determines the strength of fitting between the joint material and the groove and the ease of dropping the joint material. For this reason, applying the mounting structure described in this publication to a member to be coupled having a wide rigidity has a great problem in terms of reliability. Moreover, as explained above, in the concave groove into which the joint material described in this publication is inserted, there is a mechanism for inserting the protrusion formed on the joint material flexibly using elasticity while sliding into the concave groove. For this reason, it is necessary to push the joint material into the groove with a strong force. Accordingly, it is required to easily combine assembled furniture and the like, and it is difficult to use the joint material disclosed in this publication for applications intended for general customers.

The second prior art described in Patent Document 2 is based on the inclined surface of the first claw portion provided at the tip of the engaging member when the engaging convex portion of the joint member is inserted into the engaging concave portion. While the inclined surface of the engaging convex portion slides, the tip of the first claw portion is elastically expanded, and the engaging convex portion is inserted into the engaging concave portion.

When a synthetic resin such as vinyl chloride or EDPM described in this publication is used for the first claw portion, the first claw portion is provided facing the tip of the opening of the engaging member, so that it elastically expands from the tip. It is extremely difficult to design the structure so that the engaging convex portion is opened and smoothly inserted into the engaging concave portion. That is, the joint structure described in this publication has a structural mechanical technical idea that the tip end of the first claw portion is elastically expanded and can be easily assembled even by a weak customer. In other words, in the case of furniture that is assembled by a customer who does not have specialized tools at home even if there is no particular problem in the case of a panel that is specially assembled by an expert in the exhibition hall using the joint structure of this gazette Even if it is a customer, it must be easy to assemble, and even if the assembled members are impacted by an earthquake, they must be permanently and firmly connected. It is not easy to apply the joint structure of this publication. Furthermore, the first claw portion and the engaging convex portion are parallel to one side of the panel, and are not suitable for small furniture. Moreover, since the above joint structure is finally exposed after assembly, it is also an aesthetic problem.

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a member coupling structure that suitably solves the above problems, and an assembly structure including the same.

A joint structure of a member comprising a rod-shaped joint member and a hollow engaging member into which the joint member is inserted, and connecting two members by connecting the joint member and the engaging member, A joint member engaging portion in which a convex portion and a concave portion are continuously formed is formed on the outer peripheral portion of the joint member, and the engaging member has a plurality of elasticity arranged on the inner surface and toward the center of the inner surface. The hook includes a first hook group formed on the same plane and a second hook group formed on the same plane separated from the plane by a predetermined distance, and the joint member engaging portion and the The problem is solved by a member coupling structure characterized in that two members are connected with three or more hooks in contact with each other on the same plane.

The problem is solved by a member coupling structure in which N hooks are provided apart from each other by 360 degrees / N (N is an integer of 2 or more) on the same plane.

Further, the problem is solved by a member coupling structure comprising three or more hook groups formed on the same plane.

In addition, the hook group and the joint member are provided according to a pitch Lf between the hook groups and a pitch D between the concave portions or convex portions of the joint member according to the formula: Lf = D × (K ± α). The problem is solved by the connecting structure of the members. In the formula, K represents an integer, and α represents a fraction.

Further, the convex portion of the joint member engaging portion is engaged with the hook, and further, the hook is expanded by pressing in the back direction of the engaging member, and the hook of the joint member engaging portion is expanded. The problem is solved by a member coupling structure characterized in that the joint member and the engagement member are coupled by fitting into a recess.

Also, the problem is solved by an assembly structure having a connecting structure of the members.

Since the member coupling structure of the present invention couples a plurality of members without using screws or screws, it is not necessary to perform troublesome work such as turning the plate upside down during assembly in order to insert screws from the back side of the plate. Easy assembly work. That is, the above-mentioned two members can be easily coupled without using a tool such as a screwdriver by pressing and fitting a joint member incorporated in one member into an engagement member incorporated in the other member. be able to. For this reason, the assembly work efficiency is greatly improved.

The member coupling structure according to the present invention employs a mechanism in which a hook portion that is formed on the inner surface of the engaging member and elastically deforms, and a joint member engaging portion that is formed on the outer surface of the joint member are fitted. If the hook member is pushed in while being slid to an engaging member with an appropriate force, the hook portion is elastically deformed and expanded, so that the joint member and the engaging member can be smoothly connected with one touch. For this reason, the force work strong to an assembly work is unnecessary, and it can assemble easily at home. Further, since no screws or screws are used, there is an excellent feature that the aesthetic appearance is not impaired. In addition, the joint member and the engagement member used in the present invention do not protrude on the surface of the assembled product, so that they do not get in the way of use and are excellent in appearance. Furthermore, once the hook portion and the joint member engaging portion are fitted, the hook portion is restored to its original shape by the elastic force, and the joint member is not pulled out. For this reason, it is possible to couple a plurality of members stably.

Also, it is possible to adjust the pressing force when fitting the joint member to the engagement member by changing the material such as the elastic modulus of the hook portion. Further, when the joint member engaging portion is pushed in while expanding the hook portion, there is a problem that a gap is generated between the members to be joined if the pitch between the engaging portions constituting the joint member engaging portion is rough. However, since narrowing the pitch between the engaging portions is structurally limited, the member coupling structure according to the present invention includes a hook group including a plurality of hooks on the same horizontal plane, and different horizontal planes. Another hook group is provided on the top, so that one of the plurality of hook groups and the engaging portion are fitted to each other, and the effective effective pitch of the engaging portion with respect to the hook group is reduced. . With such a configuration, it is possible to join the surfaces of the members to be joined together without a gap.

According to another embodiment of the present invention, there is provided a member coupling structure in which a male screw is formed on the joint member as an engaging portion, and the hook member formed on the engaging member is expanded by the male screw while the engaging member is expanded. After the joint member is pushed in, the joint member is rotated, whereby the male screw and the hook are screwed together, and the members to be joined can be further firmly joined. In addition, it is comprised so that the rotation direction of the external thread formed in the both sides of a joint member may become reverse direction mutually.

In addition, a member coupling structure according to still another embodiment of the present invention uses a male screw in which a hexagonal hole or the like is formed in the head and a thread is formed in the shaft portion as a joint member, and this male screw is used as an engaging member. It can also be configured to fit. That is, when joining the L-shaped member provided with an opening in the part and the other member, by passing the joint member through the opening, and further screwing the joint member into the engaging member using hexagon or the like, Even when the joint member cannot be inserted in advance at the factory like the L-shaped member, the coupling structure according to the present invention can be applied.

According to still another embodiment of the present invention, a member coupling structure includes a rod-like portion formed with a male screw that fits with an engaging member, a head portion formed integrally therewith, and a head integrated with the head. Using the joint member having the flange formed in the above, the rod-like portion can be rotated by manually rotating the flange without using a tool such as a driver, and the joint member can be fitted to the coupling member. Furthermore, since the member is provided with a concave portion for accommodating the rod-like portion and the head portion so that the rod-like portion and the head portion cannot be seen from the outside of the assembled product after assembly, the design is excellent.

Further, a customer who has purchased the assembly structure of the present invention can easily assemble assembly-type furniture and the like without using an assembly tool or the like by connecting the connection structures incorporated in the assembly structure. Furthermore, assembled furniture after assembly is excellent in design because the coupling structure is not exposed to the exterior.

FIG. 1A is a perspective view of a joint member according to a first embodiment of the present invention, and FIG. 2 (a) is a perspective view of the coupling member according to the embodiment of the present invention, FIG. 2 (b) is a side view, FIG. 2 (c) is a plan view of the coupling member from above, and FIG. 2 (d). Is a plan view of the coupling member as viewed from below, FIG. 2 (e) is a sectional view taken along the line CC of FIG. 2 (c), and FIG. 2 (f) is a line DD in FIG. 2 (c). FIG. It is explanatory drawing for demonstrating the method of engagement with the joint member and engagement member by embodiment of this invention. It is explanatory drawing which shows the attachment method of the joint member in connection with the 1st Example of this invention. It is explanatory drawing which shows the attachment method of the joint member in connection with the 2nd Example of this invention. It is explanatory drawing which shows the attachment method of the joint member in connection with the 3rd Example of this invention. It is explanatory drawing which shows the attachment method of the joint member in connection with the 4th Example of this invention.

Hereinafter, embodiments of the member coupling structure of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1A is a perspective view of a joint member according to the first embodiment of the present invention, and FIG. 1B is a side view, and the material of the joint member is rigidity, hardness, strength, bending elastic modulus, processing. An appropriate resin or metal is selected from the viewpoint of properties.

As shown in FIG. 1 (a), the joint member 10 of the present invention is a rod-shaped member having a fixed length. Locking portions having concentric concavities and convexities are formed on the outer surfaces of both sides, and the locking portions are continuous. The joint member engaging portion 11 is formed. Further, a recess 12 is provided in the central portion along the longitudinal axis of the joint member 10 to improve the efficiency and weight of the material. As can be seen from FIG. 1 (b), the locking portion has a first inclined surface 11 a and a second inclined surface 11 b, and the second inclined surface 11 b is substantially perpendicular to the longitudinal direction of the joint member 10. The first inclined surface 11a is formed at a predetermined angle.

The first inclined surfaces 11a formed on the two joint member engaging portions 11 provided on both sides are formed so as to be opposite to each other with respect to the line BB, and the engagement shown in FIG. The joint member 10 can be inserted into the member 20 from either side.

Next, the engaging member 20 of the present invention will be described with reference to FIG. FIG. 2A is a perspective view of the coupling member 20 of the present invention. The coupling member 20 is formed on the outer surface of a ring-shaped member made of resin or metal, on the engagement member outer locking portion 21 and the engagement member end surface 22. And are provided. FIG. 2B is a side view of the coupling member 20, and the engagement member outer locking portion 21 has a third inclined surface 21a and a fourth inclined surface 21b, and the fourth inclined surface 21b is the coupling member. On the other hand, the third inclined surface 21a is formed at a predetermined angle substantially perpendicularly to the longitudinal direction of 20.

2 (c) is a plan view of the coupling member 20 as viewed from above, FIG. 2 (d) is a plan view of the coupling member 20 as viewed from below, and FIG. 2 (e) is a cross-sectional view of FIG. FIG. 2F is a cross-sectional perspective view taken along the line DD of FIG. 2C. The engaging member 20 according to the present invention is formed on a first horizontal plane, and the

first hook groups

23a, 23b, and 23c are positioned 120 degrees apart from each other, and a second horizontal plane that is a predetermined dimension away from the first horizontal plane. The

second hook groups

24a, 24b, and 24c are formed in a positional relationship 120 degrees apart from each other, and the

hooks

23a and 24a are in a positional relationship 60 degrees apart from each other. Therefore, the

first hook groups

23a, 23b, and 23c and the

second hook groups

24a, 24b, and 24c form a hook group that is 60 degrees apart.

As can be seen from FIG. 2 (e), the hook 23 c and the hook 24 b have hook first inclined surfaces 25 and 25 ′ and hook second inclined surfaces 26 and 26 ′, respectively. , 26 ′ are substantially perpendicular to the longitudinal direction of the coupling member 20, while the hook first inclined surfaces 25, 25 ′ are formed at a predetermined angle. That is, tip portions Q1 and Q1 ′ composed of the hook first inclined surfaces 25 and 25 ′ and the hook second inclined surfaces 26 and 26 ′ of the

first hook groups

23a, 23b and 23c and the

second hook groups

24a, 24b and 24c are provided. As seen from the end face 22 of the engaging member, it is formed toward the inner side of the ring in the back direction. The

first hook groups

23a, 23b, 23c and the

second hook groups

24a, 24b, 24c are set to a predetermined rigidity determined by the type of resin or metal and the structural parameters of the hooks. When the joint member 20 shown in FIG. 1 is inserted from the engagement member end face 22 side shown in FIG. 2 (e), the first inclined surface 11a of the locking portion is behind the hook first inclined surface 25 of the hook 23c. The hook 23c is pushed in the back direction while sliding in the direction. The hook 23c is expanded by elastic deformation, and the joint member 10 is smoothly inserted toward the back direction of the engagement member 20.

When the distal end portion P1 of the engaging portion constituting the joint member engaging portion 11 exceeds the distal end Q1 of the hook 23c, the contact state between the hook 23c and the engaging portion is released, and the distal end portion Q1 is a portion of the engaging portion. It moves inward along the second inclined surface 11b and returns to its original position by elasticity. For this reason, the movement of the joint member 10 in the forward direction is prevented by the hook 23c, and once the joint member 10 and the engagement member 20 are fitted, the joint member 10 does not come out of the fitted state. For this reason, between the members can be stably coupled using the joint member 10 and the engaging member 20 of the present invention. Moreover, since both surfaces of the hook 23c, that is, the hook first inclined surface 25 and the surface opposite to this surface are formed at an acute angle with respect to the inner surface of the coupling member 20, the hook 23c is smooth and stable. Perform elastic deformation. This effect is the same for the other hooks.

In FIG. 2 (e), when the joint member 10 is further pushed forward, the engaging portion constituting the joint member engaging portion 11 comes into contact with the hook 24b, and the engaging portion described above and the hook 23c are in contact with each other. The locking portion is locked by the hook 24b by an operating mechanism similar to the operating mechanism. That is, when the tip portion P1 of the locking portion exceeds the tip Q1 ′ of the hook 24b, the contact state between the hook 24b and the locking portion is released, and the tip portion Q1 ′ is brought into contact with the second inclined surface 11b of the locking portion. It moves inward along and returns to the original position, and the locking portion is firmly locked by the hook 24b. As described above, the

first hook group

23a, 23b, 23c and the

second hook group

24a, 24b, 24c are sequentially moved from the locking part provided on the front end side toward the locking part provided on the front side. The engagement is repeated alternately and inserted toward the back of the engagement member 20, and finally the insertion is completed.

Further, the inner diameter of the engagement member 20 is made slightly larger than the outer diameter of the joint member 10, and the inserted joint member 10 is inserted into the insertion port inner surface of the engagement member 20, the first The

hook group

23a, 23b, 23c and the

second hook group

24a, 24b, 24c are pressed toward the center of the engagement member 20 at a plurality of positions in the depth direction of the engagement member 20, and the central axis of the joint member 10 is engaged. Consideration is given to the structural mechanics so that the center axis of the joint member 10 is less wobbling with respect to the center axis of the engaging member 20 and is arranged in a well-balanced manner so as to substantially coincide with the center axis of the combined member 20.

In the present embodiment, the two horizontal planes on which the

first hook groups

23a, 23b, 23c and the

second hook groups

24a, 24b, 24c are formed are shifted from each other. The reason for this will now be described. If the pitch between the leading ends P1 or between the leading ends Q1 (between the leading ends Q1 ') is rough, there is a problem that a gap is generated between the members coupled using the joint member 10 and the engaging member 20 of the present invention. However, simply narrowing these pitches has structural mechanical limitations. Therefore, in the coupling structure of the members of the present invention, a hook group consisting of a plurality of hooks is formed on the same horizontal plane, and further on different horizontal planes. Another hook group is provided so that one of the plurality of hook groups and the locking portion are fitted to each other, and the substantial effective pitch of the locking portion with respect to the hook group is reduced. With such a configuration, it is possible to join the surfaces of the members to be joined together without a gap. In the case of the present embodiment, a pitch of about ½ is effectively realized with respect to the pitch of only the

first hook groups

23a, 23b, 23c or the pitch of only the

second hook groups

24a, 24b, 24c. With such a configuration, it is possible to join the surfaces of the members to be joined together without a gap.

Next, referring to FIG. 3, the pitch between the concave portions or the convex portions of the joint member 10 described above, and the pitch between the

first hook groups

23a, 23b, 23c and the

second hook groups

24a, 24b, 24c, The relationship will be described in more detail. FIG. 3A is an explanatory diagram showing a state before the joint member 10 is inserted into the engaging member 20. FIG. 3B shows a state in which the joint member 10 is inserted into the engaging member 20 and the hook 24 b and the concave portion of the joint member engaging portion 11 are fitted. 3C is a plan view of the coupling member 20 as viewed from above, as in FIG. 2C, but the shaded

second hook groups

24a, 24b, and 24c are fitted with the recesses of the joint member engaging portion 11. FIG. It shows a state of matching. FIG. 3D shows the next engagement state in which the joint member 10 is further inserted by one pitch from the engagement state shown in FIG. That is, the hook 23c and the concave portion of the joint member engaging portion 11 are fitted, and FIG. 3 (e) shows the

first hook group

23a, 23b, 23c shaded as the joint member engaging portion 11. The state of fitting with the recess is shown in a plan view.

Here, Lf is the distance between the first hook group and the second hook group, D is the pitch between the concave portions or the convex portions of the joint member 10, d1 is the vertical tip position of the joint member 10 in FIG. Is the vertical tip position of the joint member 10 in FIG. 3 (d), d, that is, | d2-d1 | is the pitch between the concave portions or convex portions of the joint member 10 and the pitch between the hook groups provided on the engaging member 20. The effective pitch d is expressed by the difference between the tip position of the joint member 10 in FIG. 3B and the tip position of the joint member 10 in FIG.

The relationship between the distance Lf between the first hook group and the second hook group and the pitch D between the concave portions or the convex portions of the joint member 10 is calculated by the following formula (1), and the effective pitch d is calculated by the formula (2). Is done.
Lf = D × (K ± α) (1)
d = D × α (2)
Here, K is an integer, and α is a fraction such as 1/2, 1/3, 1/4. From the above equation, the effective pitch d is α times the pitch D between the concave portions or the convex portions of the joint member 10.

Next, referring to FIGS. 4A and 4B, a method of manufacturing an assembly structure by attaching the member coupling structure according to the first embodiment of the present invention to a member such as a plate, and the assembly structure. A method of manufacturing a composite assembly structure by bonding objects to each other will be described. 4A, reference numeral 41 denotes an assembly structure into which the joint member 10 is inserted, and reference numeral 42 denotes an assembly structure into which the engagement member 20 is inserted. As a method for manufacturing an assembly structure 41 such as a particle board into which the joint member 10 is inserted, an opening having an inner diameter slightly smaller than the outer dimension of the joint member 10 is provided in a member constituting the assembly structure, and the joint member 10 is inserted into the opening. At this time, the joint member engaging portion 11 is configured to be firmly fitted to the inner surface of the opening provided in the assembly structure 41 so that the joint member 10 does not come out of the assembly structure 41.

On the other hand, the assembly structure 42 is provided with an opening having an inner diameter slightly smaller than the outer dimension of the engagement member 20, and the engagement member 20 is inserted into the opening. At this time, the engaging member outer locking portion 21 provided on the outer surface of the engaging member 20 is strongly fitted to the inner surface of the opening provided in the assembly structure 42, so that the engaging member outer locking portion 21 is the member 42. It is configured not to come off. As described above, the joint member 10 and the engagement member 20 according to the present invention are inserted into the openings provided in the respective members constituting the

assembly structures

41 and 42 at the factory, respectively, and these are the assembly structures. Sold as.

Next, as shown in FIG. 4B, the customer who purchased the assembly structure inserts the joint member 10 into the opening of the engagement member 20, and uses the method described with reference to FIG. The joint member 10 is pressed against the engaging member 20 until the flat surfaces of the

objects

41 and 42 come into close contact with each other, and the joint member 10 is fitted to the engaging member 20. The height of the joint member 10 inserted and fitted into the assembly structure 41 from the surface of the assembly structure 41 varies, and if the effective pitch between the hook groups is large, there is a gap between each plane of the

assembly structures

41 and 42. However, in the engaging member 20 according to this embodiment, any one of the first hook group and the second hook group having different positions in the longitudinal direction of the engaging member 20 and the joint member engaging portion. 11 is fitted so that the effective pitch of the hook is reduced. With such a configuration, it is possible to join the surfaces of the assembly structures to be joined together without a gap. As the member, particle board, oriented strand board (OSB), medium density fiber board (MDF), or the like can be used.

(Second embodiment)
Next, the second embodiment of the present invention will be described with reference to FIG. FIG. 5 is an explanatory view showing the structure of the joint member 50 according to the second embodiment of the present invention and a method of attaching the

assembly structures

52 and 53 using the joint member 50. 50 is a male screw on both sides. The

joint members

51a and 51b are formed, and the male screw 51a and the male screw 51b are formed in the reverse direction.

Reference numerals

20A and 20B denote engaging members inserted into the

members

52 and 53, respectively. First, the

assembly structures

52 and 53 are brought close to the joint member 50 from both sides, the male screw 51a is inserted into the engaging member 20A, the male screw 51b is inserted into the engaging member 20B, and then the male screw 51a, The

male screws

51a and 51b are pushed into the hooks provided inside the engaging

members

20A and 20B so that at least one peak of 51b is located behind the position of the hooks formed on the engaging

members

20A and 20B. Perform assembly work.

Next, when the joint member 50 is rotated, the male screw 51a and the hook provided inside the engaging member 20A continue to be spirally engaged, and the male screw 51a is inserted into the back of the engaging member 20A. The male screw 51b is spirally engaged with the hook in the engaging member 20B and inserted into the engaging member 20B. In this manner, the member 52 and the member 53 can be easily coupled to each other while maintaining a predetermined distance without using a tool such as a screwdriver by the joint member 50 and the engaging

members

20A and 20B.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 6 is an explanatory view showing the structure of the joint member 60 according to the third embodiment of the present invention and a method for mounting the assembly structure comprising the assembly structure 64 and

members

65a and 65b using the joint member 60. , 60 is a joint member formed with a male screw 61 on one end side and a head 62 having a hexagonal hole on the other end side, 65a is a plate-like member, and 65b has an opening 66 for passing through the joint member 60. It is a member provided. Reference numeral 64 denotes a member into which the engaging member 20 is inserted. First, the joint member 60 is inserted into the opening 66 and further inserted into the engagement member 20.

Subsequently, the male screw 61 is pushed into the hook provided inside the engaging member 20 so that at least one mountain of the male screw 61 is located behind the position of the hook formed on the engaging member 20. Perform assembly work. Next, when the hexagon 63 is fitted into a hexagon hole (not shown) and rotated, the male screw 61 and the hook provided in the engaging member 20 continue to be spirally engaged, and the male screw 51a becomes It is inserted into the back of the engaging member 20A. In the present embodiment, the male screw 61 is spirally fitted into the engaging member 20, whereby the assembly structure 64 and the assembly structure composed of the

members

65a and 65b can be firmly coupled. Further, since the joint member 60 is configured so as not to be seen by the plate-like member 65a, the design is excellent. The coupling structure according to the present embodiment applies the coupling structure according to the present invention even when the joint member cannot be inserted in advance at the factory like an L-shaped assembly structure composed of the

members

65a and 65b. There is an effect that can be.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 7 (a) to 7 (f). FIG. 7A is a perspective view of the joint member 70 used in this embodiment. The joint member 70 has a joint coupling portion 71 having an external thread formed on the outer surface, and a head portion 72 that fixes the joint coupling portion 71. And a flange 73 that is fixed to the head portion and is rotated by pinching the joint coupling portion 71 by hand, and an upper surface 74 of the head portion 72.

Next, referring to FIGS. 7B to 7F, the structure of the joint member 70 according to the fourth embodiment, and the assembly structure 76 and the assembly structure 77 using the joint member 70 are attached. A method will be described. First, as shown in FIG. 7 (b), the flange 73 is grasped by hand, the joint coupling portion 71 is inserted into the engaging member 20, and a hook (at least one thread of a male screw is formed on the engaging member 20). The operation is performed so that the male screw is pushed into the hook provided inside the engaging member 20 so as to be located behind the position of (not shown).

Next, in FIGS. 7C and 7D, the joint coupling portion 71 is rotated until the side surface flat portion 75 of the head portion 72 comes into contact with the surface of the assembly structure 76. Subsequently, as shown in FIG. 7E, an assembly structure 77 provided with a recess 78 for inserting the head portion 72 and an opening 79 for penetrating the joint coupling portion 71 is formed as shown in FIG. As shown in FIG. 4, the head portion 72 is covered with the concave portion 78 and assembled so as to penetrate the joint coupling portion 71 from the opening 79. The assembly structure 76 and the assembly structure 77 can be firmly coupled without using an assembly tool such as a hexagon. In addition, since the entire joint member 70 is completely accommodated in the recess 78 provided in the assembly structure 77, the aesthetic appearance is not impaired.

In the above description, the

first hook groups

23a, 23b, and 23c and the

second hook groups

24a, 24b, and 24c have been described as being disposed at an angle of 120 degrees on the same horizontal plane. First, a group of L (L is an integer of 2 or more) first hook groups and a group of M (M is an integer of 2 or more) second hook groups are each 360 degrees / L, 360 degrees on different horizontal planes. You may make it arrange | position in the positional relationship distant by the angle of / M. In addition to the

first hook group

23a, 23b, 23c and the

second hook group

24a, 24b, 24c, a third hook group to an Nth (an integer greater than or equal to 4) hook group is provided in the back direction. You may do it. Further, the second hook group may not be provided and only the first hook group may be used. At this time, in order to stably hold the joint member by the hooks constituting the same hook group, particularly when L or M is 2, both end portions of the hook when the hook is viewed in plan protrude, and this protruding portion Thus, the joint member is configured to be pressed toward the central axis of the engaging member. That is, for all L and M, the plurality of hooks constituting the same hook group press the joint member from at least three locations in a balanced manner in the central axis direction, thereby stably engaging the joint member. It can be held by.

Further, in the second to fourth embodiments, the

joint members

50, 60, and 70 are described as being provided with male threads. However, the engaging members as shown in FIG. Also good. At this time, even if a locking portion is formed on the distal end side of the joint member and then a male screw is formed on the outer surface of the joint member, a male screw is formed on the distal end side of the joint member, and then the locking portion is continued. Either method may be used. According to this method, after the male screw is rotated and the joint member is inserted into the back of the engaging member 20, as described in the first embodiment, the locking portion is moved in the forward direction by the hook. Therefore, once the joint member and the engagement member 20 are fitted, the joint member is not detached from the engagement member 20, and the coupling can be stably maintained.

Further, when the engaging member 20 is inserted into a member such as a particle board, an oriented strand board (OSB), or a medium density fiber board (MDF), the concave portion into which the engaging member 20 is inserted depending on the required bonding strength. An adhesive may be applied to the inner surface. That is, when it is necessary to increase the coupling strength with the member into which the engaging member 20 is inserted, the adhesive member is applied to the inner surface of the concave portion into which the engaging member 20 is inserted, and then the engaging member 20 is made into the concave portion. When the coupling strength between the engagement member 20 and the member to be coupled with the engagement member 20 is not so required, the engagement member 20 is inserted into the recess as it is without applying an adhesive to the inner surface of the recess. May be.

DESCRIPTION OF SYMBOLS 10 Joint member 11 Joint member engaging part 11a 1st inclined surface 11b 2nd inclined surface 12 hollow 20,20A, 20B engaging member 21 engaging member outer side locking part 21a 3rd inclined surface 21b 4th inclined surface 22 engagement Member end faces 23a, 23b, 23c

First hook group

24a, 24b, 24c

Second hook group

41, 42 Assembly structure 50

Joint member

51a,

51b Male screw

52, 53 Assembly structure 60 Joint member 61 Male screw 62 Head 63 Hexagon 64

Assembly structure

65a, 65b Member 66, 66 'Opening 70 Joint member 71 Joint coupling part 72 Head part 73

Flange

76, 77 Assembly structure 78 Recess 79 Opening

Claims

A rod-shaped joint member;
A coupling structure for connecting two members by connecting the joint member and the engaging member, and a hollow engaging member for inserting the joint member.
A joint member engaging portion is formed on the outer peripheral portion of the joint member.
The engagement member includes a plurality of elastic hooks arranged on the inner surface and toward the center of the inner surface,
The hook includes a first hook group formed on the same plane and a second hook group formed on the same plane at a predetermined distance from the plane, and the joint member engaging portion and the hook are the same. A connecting structure of members, wherein two members are connected in contact with each other at three or more locations on a plane.
2. The member coupling structure according to claim 1, wherein N hooks are provided on the same plane so as to be separated from each other by 360 degrees / N (N is an integer of 2 or more).
3. The member coupling structure according to claim 1, further comprising three or more hook groups formed on the same plane.
4. The hook group and the joint member are provided according to the following formula, wherein the pitch Lf between the hook groups and the pitch D between the concave portions or convex portions of the joint member are as follows. Connecting structure of members.
Lf = D × (K ± α)
Here, K is an integer and α is a fraction.
The convex portion of the joint member engaging portion is engaged with the hook, further pressed in the depth direction of the engaging member to expand the hook, and the hook is moved into the concave portion of the joint member engaging portion. 5. The member coupling structure according to claim 1, wherein the joint member and the engagement member are connected by fitting.
An assembly structure comprising the member coupling structure according to claim 1.