JP5719485B1 - Member coupling structure and assembly structure including the same - Google Patents

Abstract

A member coupling structure that can be easily assembled is provided as a member coupling structure applicable to assembly furniture and the like. A joint member (10) inserted into an assembly structure (51) is inserted into an opening of an engagement member (20) inserted into the assembly structure (52), and the assembly structure ( The joint member (10) is pressed against the engaging member (20) until the flat surfaces 51) and (52) come into close contact with each other. Thereby, the hook part formed on the inner surface of the engaging member (20) and elastically deformed and the joint member engaging part formed on the outer surface of the joint member (10) are fitted, and the hook part is elastically deformed. By expanding, the joint member (10) and the engaging member (20) can be smoothly coupled with one touch. For this reason, the strength work is unnecessary for the assembling work, and the assembling work can be easily performed without using an assembling tool such as a driver. [Selection] Figure 5

Description

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

  Assembly-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 because of 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 left and right side plates, a top plate, and a 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.

  In addition, as a second conventional technique, there is a joint structure described in Patent Document 2 (Japanese Unexamined Patent Application Publication No. 2009-47231), and when the engagement convex portion of the joint member is passed from the outside of the opening toward the engagement 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 made while sliding the inclined surface of each crest. 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.

  The present invention provides a member coupling structure and an assembly structure including the member coupling structure that solve the above-mentioned problems.

  A connecting structure for connecting two members by connecting the joint member and the engaging member by including a rod-shaped joint member and a hollow engaging member into which the joint member is inserted; A joint member engaging portion is formed on the outer peripheral portion of the joint member. The inner diameter of the inlet of the engaging member into which the joint member is inserted is substantially equal to the outer shape of the joint member. The engaging member includes a plurality of elastic hooks arranged on an inner surface and toward a center direction of the inner surface, and both surfaces of the hook in a central axis direction of the engaging member are provided on the engaging member. The hooks are formed at an acute angle with respect to the depth direction of the inner surface of the first hook group, the first hook group formed on the same plane, and the second hook formed on the same plane at a predetermined distance from the plane. It solves the problem by coupling structure member, characterized in comprising a click group.

  Further, the joint member engaging portion is formed on both sides of the joint member, and each inclination angle formed from the concave portion and the convex portion is opposite to each other with respect to the longitudinal direction of the joint member. The problem is solved by the connecting structure of the members.

  Further, the problem is solved by a member coupling structure characterized in that a depression is provided in the central portion of the joint member along the longitudinal direction of the joint member.

  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.

  In addition, an engagement member end surface support portion for supporting the joint member having a plurality of concave portions and convex portions as viewed from the upper surface of the engagement member is provided at the inlet, and the base of the hook is planar. The problem is solved by a member coupling structure formed between the projections.

  In addition, the problem is solved by a member coupling structure characterized in that a line formed by the base of the hook and the inner surface of the engaging member is substantially a straight line.

  Further, the assembly structure includes the engagement member and the joint member, and the assembly structure includes a first coupled member into which the engagement member is inserted and the joint member. The problem is solved by an assembly structure including the second coupled member.

  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.

  Further, it is possible to adjust the pressing force when fitting the joint member to the engaging 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 engaging 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 purchases 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. 2A is a perspective view of the engaging member according to the embodiment of the present invention, FIG. 2B is a side view, FIG. 2C is a plan view of the engaging member viewed from above, FIG. d) is a plan view of the engaging member as viewed from below, FIG. 2 (e) is a cross-sectional view taken along line CC in FIG. 2 (c), and FIG. 2 (f) is D- in FIG. It is a cross-sectional perspective view along the D line. It is explanatory drawing for demonstrating the method of engagement with the joint member and engagement member by embodiment of this invention. (A) is the top view which looked at the engaging member concerning other embodiment of this invention from the upper part, (b) is sectional drawing along CC line of (a), (c) is (a). It is sectional drawing along line DD. (D) is a top view of the engagement member end surface 22 including the engagement member end surface support part 48, (e) is sectional drawing along the EE line of FIG. 4A (a), (f) is a hook. 43A, 43B, 44A, and 44B are schematic enlarged plan views showing the planar shapes, and (f) ′ is a schematic enlarged plan view showing the planar shapes of the hooks 23a to 23c and 24A to 24C shown in FIG. 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.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a member coupling structure according to the present invention will be described below 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. From the viewpoint of properties and the like, an appropriate resin, metal, or composite material is selected.

  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. 1B, 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. On the other hand, the first inclined surface 11a is formed at a predetermined angle.

  Moreover, the 1st inclined surface 11a formed in the two joint member engaging parts 11 provided in the both sides is formed so that it may become mutually opposite direction with respect to a BB line, 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 engaging member 20 of the present invention. The engaging member 20 is formed on the outer surface of a ring-shaped member formed of resin, metal, composite material, or the like, and the engaging member outer locking portion. 21 and an engaging member end face 22 are provided. FIG. 2B is a side view of the engaging member 20, and the engaging member outer locking portion 21 has a third inclined surface 21a and a fourth inclined surface 21b, and the fourth inclined surface 21b is engaged. On the other hand, the third inclined surface 21a is formed at a predetermined angle substantially perpendicular to the longitudinal direction of the combined member 20.

  2 (c) is a plan view of the engaging member 20 as viewed from above, FIG. 2 (d) is a plan view of the engaging member 20 as viewed from below, and FIG. 2 (e) is C in FIG. 2 (c). FIG. 2F is a cross-sectional perspective view taken along the line DD of FIG. 2C. FIG. 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 engaging 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 material such as resin, metal, or composite material and the structural parameters of the hook. When the joint member 10 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. Further, 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 engaging member 20, the hook 23c is smooth and stable. To 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 inlet of the engaging member 20 is made to be substantially the same as or slightly wider than the outer diameter of the joint member 10. The joint member 10 is pressed toward the center of the engagement member 20 at a plurality of positions in the depth direction of the engagement member 20 by the insertion port inner surface, the first hook groups 23a, 23b, 23c, and the second hook groups 24a, 24b, 24c. The central axis of the joint member 10 is arranged in a well-balanced manner so as to substantially coincide with the central axis of the engaging member 20, and the structural mechanics of the central axis of the joint member 10 with respect to the central axis of the engaging member 20 is reduced. Consideration has been given.

  In this embodiment, the interval between the two horizontal planes where the first hook groups 23a, 23b, and 23c and the second hook groups 24a, 24b, and 24c are formed is shifted from the relation of the integer ratio. To do. 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 engaging member 20 as seen from above, as in FIG. 2C, but the shaded second hook groups 24a, 24b, and 24c are connected to the recesses of the joint member engaging portion 11. FIG. The fitting state is shown. FIG. 3D shows the next engagement state in which the joint member 10 is further inserted by 1/2 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. 3D is the vertical tip position of the joint member 10 in FIG. 3D, and 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.

(Another embodiment of the engaging member)
Next, another embodiment of the engaging member according to the present invention will be described with reference to FIG. The same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted. 4A is a plan view of an engaging member 40 according to another embodiment of the present invention as viewed from above, FIG. 4B is a cross-sectional view taken along the line CC in FIG. 4A, and FIG. 4C is a cross-sectional view taken along the line DD in FIG. 4A, and FIG. 4D is a plan view of the engaging member end surface 22 including the engaging member end surface supporting portion 48. FIG. ) Is a cross-sectional view taken along line EE of FIG. 4A, FIG. 4F is an enlarged plan view of hooks 43a, 43b, 44a, and 44b, and FIG. 4F is the first embodiment. It is an enlarged plan view of hooks 23a to 23c and 24a to 24c described in FIGS. 2C and 2D related to the engaging member 20 according to an example.

  The engagement member 40 shown in FIG. 4 (a) includes a first hook group 43a, 43b formed on the first horizontal plane and spaced apart from each other by 180 degrees, and a second hook separated by a predetermined dimension from the first horizontal plane. The second hook groups 44a and 44b are formed on a horizontal plane and are positioned 180 degrees apart from each other, and the hooks 43a and 44a are positioned 90 degrees apart from each other. Accordingly, the first hook groups 43a and 43b and the second hook groups 44a and 44b constitute hook groups that are 90 degrees apart from each other.

  In the first embodiment, the first hook groups 23a, 23b, and 23c are positioned 120 degrees apart from each other, and the second hook groups 24a, 24b, and 24c are positioned 120 degrees apart from each other. In the second embodiment, the number of the three hooks in the first embodiment is reduced to two each. By reducing the number of hooks, the distance between the hooks can be increased. Specifically, the distance between the hook 43a and the hook 44a can be increased. If the distance between the hooks is narrowed, the side surfaces of the adjacent hooks may come into contact with each other when the molten thermosetting resin is injected and filled into the mold for manufacturing the engaging member 40. In this case, each hook cannot be elastically deformed independently, and there is a problem that the elastic characteristics of the hook are hindered. In the second embodiment of the engaging member 40, for the reasons described above, the number of hooks is smaller than that in the first embodiment, and two hooks are provided on each plane so that the distance between adjacent hooks is widened. Configure. Thereby, it is possible to prevent the adjacent hooks from being connected by the sealing resin due to variation in the manufacturing process, and each hook can be elastically deformed independently.

Further, the hook thickness t of each of the first hook groups 43a and 43b and the second hook groups 44a and 44b shown in FIGS. 4B and 4C is more elastic than the hook thickness of the first embodiment. Thicken to increase strength when performing. The bending stiffness ρ of plastic is known to be proportional to the cube of the thickness t, the width W, and the Young's modulus E as shown in the following equation (1). For example, when the thickness t is increased to 1.2 times The bending rigidity ρ is 1.73 times. On the other hand, since the bending rigidity ρ is linearly proportional to the hook width W, increasing the hook thickness t is extremely effective in improving the bending rigidity ρ when the hook width cannot be increased as described above. . Specifically, when the resin is determined, the Young's modulus E is determined, and when the number of hooks on the same plane and the hook interval are determined, the hook width W is substantially determined. Therefore, when the required bending rigidity ρ is obtained from experiments, the required hook thickness t can be calculated using the equation (1).
^{ρ = E · W · t 3} /12 ··· (1)

  Next, with reference to FIGS. 4F and 4F, the shape of the hook constituting the engaging member 40 of the second embodiment will be described. Here, FIG. 4 (f) is a schematic enlarged plan view showing the planar shape of the hooks 43a, 43b, 44a, 44b, and FIG. 4 (f) ′ is a hook of the first embodiment shown in FIG. 2 for reference. It is a typical enlarged plan view showing the plane shape of 23a-23c and 24a-24c. In the hook of the first embodiment, the line between the inner surface of the engagement member 20 and the base of the hook is formed with a curve as indicated by 410 in FIG. A line between the inner surface of the engaging member 40 and the base of the hook is linearly formed as indicated by 49 in FIG. The inventor created and evaluated a prototype in which the shape of the hook base with respect to the inner surface of the engaging member was changed from a curve to a straight line, and found that the elasticity of the hook increased. In consideration of the effect of the hook base shape on the elasticity of the hook, when the elasticity of the hook larger than the elasticity of the hook in the first embodiment is required, as adopted in the hook of the second embodiment The base shape of the hook is configured linearly.

  Next, with reference to FIGS. 4A, 4 </ b> D, and 4 </ b> E, the engagement member end surface support portion 48 provided in the vicinity of the engagement member end surface 22 will be described. FIG. 4D is a plan view of the engagement member end surface 22 including the engagement member end surface support portion 48. The engagement member end surface support portion 48 has eight convex portions 481 to 488 on the inner surface of the engagement member. It is formed. As shown in FIG. 4 (e), the inner diameter r of the engaging member end surface support portion 48 is formed to be substantially equal to or slightly wider than the outer diameter of the joint member 10 of FIG. 1, and the thickness d is 1 mm. Formed at ˜5 mm. That is, the convex portions 481 to 488 are formed along the inner surface 47 of the engaging member 40 from the engaging member end surface 22 to the depth d in the depth direction.

  When the joint member 10 shown in FIG. 1 is inserted from the engaging member end face 22 side of the engaging member 40 shown in FIGS. 4 (a) to 4 (e), the first of the locking portions with respect to the convex portions 481 to 482. The inclined surface 11a slides smoothly in the back direction. Furthermore, when the hooks 43 a and 43 b are pressed toward the back by the joint member 10, the hooks 43 a and 43 b expand by elastic deformation, and the joint member 10 is smoothly inserted toward the back of the engagement member 40.

  When the distal end portion P1 of the engaging portion constituting the joint member engaging portion 11 exceeds the distal end portion R1 of the hook 43a and the distal end portion R1 ′ of the hook 43b, the hook 43a and the hook 43b are in contact with the engaging portion. Is released, and the leading end portions R1, R1 ′ move inward along the second inclined surface 11b of the locking portion, and return to their original positions due to elasticity. Therefore, the forward movement of the joint member 10 is blocked by the hook 43a and the hook 43b, and once the joint member 10 and the engagement member 40 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 40 of the present invention. Further, since both the hook 43a and the hook 43b, for example, the hook first inclined surface 45 and the surface opposite to this surface are formed at an acute angle with respect to the inner surface of the engaging member 40, the hook according to the second embodiment. 43a and the hook 43b are elastically deformed smoothly and stably. This effect is the same for the other hooks.

  When the joint member 10 is pushed further in the back direction, the engaging portions constituting the joint member engaging portion 11 abut on the hooks 44a and 44b, and the operation of the engaging portions and the hooks 43a and 43b described above is performed. The locking portion is locked by the hook 44a and the hook 44b by an operation mechanism similar to the mechanism. As described above, the joint member 10 is sequentially engaged from the engaging portion provided on the distal end side to the engaging portion provided on the near side, the engaging member end surface support portion 48, the first hook groups 43a and 43b, The engagement with the second hook groups 44a, 44b is alternately repeated and inserted toward the back of the engaging member 40, and finally the insertion is completed.

  The inlet inner diameter r of the engaging member is formed to be substantially equal to or slightly wider than the outer diameter of the joint member 10, and the inserted joint member 10 includes the engaging member end surface support portion 48, the first member 1. The hook groups 43a and 43b and the second hook groups 44a and 44b are pressed toward the center of the engaging member at a plurality of positions in the depth direction of the engaging member 40, and the central axis of the joint member 10 is not inclined and is engaged. Consideration in structural mechanics is made so as to substantially coincide with the central axis of the joint member 40. That is, in the compound member end surface support portion 48, the joint member 10 is pressed almost uniformly in the center direction of the engaging member by the convex portions 481 to 488, and the first hook groups 43a and 43b and the second hook groups 44a and 44b. It is pressed toward the center of the engaging member in directions orthogonal to each other, and the balance in structural mechanics is suitably maintained.

  As can be seen from FIG. 4A, the base portions of the hooks 43a, 43b, 44a, and 44b are formed between the convex portions 481 to 488 in a plan view, and the center of the engaging member 40 is formed from these base portions. Hooks 43a, 43b, 44a, 44b are formed in the direction. Next, the length from the base of each hook 43a, 43b, 44a, 44b to the tip of each hook in the planar direction will be considered.

  In the present embodiment, the bases of the hooks 43a, 43b, 44a, 44b are provided on the inner surface side of the engaging member 40 rather than the tips of the convex portions 481-488. The length of each hook 43a, 43b, 44a, 44b can be made longer than forming 43a, 43b, 44a, 44b. Since the elastic characteristics of the hook can be improved by increasing the length of the hook, the joint member 10 can be stably inserted into the engaging member 40. That is, in this embodiment, by providing the engagement member end surface support portion 48, the joint member 10 is smoothly inserted and supported stably from the engagement member end surface 22, and the hooks 43a, 43b, 44a, 44b It has a feature that the elastic characteristics of the hooks 43a, 43b, 44a, 44b are improved while keeping the length long.

  In the above description, the engaging member end surface support portion 48 has been described as being point-symmetric, but it is not necessarily required to have symmetry such as point symmetry. Further, the engaging member end surface support portion 48 is provided with a concave portion and a convex portion so that the joint member 10 is supported by the convex portion, and a base portion of each hook is formed in the concave portion so that the length of the hook length is increased. And it is a technical point to comprise so that the joint member 10 may be inserted smoothly in an end surface of an engagement member. Further, the shape of the unevenness is not particularly limited, but it may be point symmetric or line symmetric.

  Next, referring to FIGS. 5 (a) and 5 (b), a method of manufacturing an assembly structure by attaching the connecting structure of members according to the first embodiment of the present invention to a member such as a plate, and the assembly thereof. A method for manufacturing a composite assembly structure by joining structures together will be described. In FIG. 5A, 51 is an assembly structure in which the joint member 10 is inserted, and 52 is an assembly structure in which the engagement member 20 is inserted. As a method for manufacturing an assembly structure 51 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 51 so that the joint member 10 does not come out of the assembly structure 51.

  On the other hand, the assembly structure 52 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 52, so that the engaging member outer locking portion 21 becomes the member 52. 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 51 and 52 at the factory, respectively, and these are the assembly structures. Sold as.

  Next, as shown in FIG. 5B, the customer who purchased the assembly structure inserts the joint member 10 into the opening of the engagement member 20, and performs the assembly structure by 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 51 and 52 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 51 from the surface of the assembly structure 51 varies, and if the effective pitch between the hook groups is large, there is a gap between each plane of the assembly structures 51 and 52. 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, a second 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 second embodiment of the present invention and a method of attaching the assembly structures 62 and 63 using the joint member 60. 60 is a male screw on both sides. The joint members 61a and 61b are formed, and the male screw 61a and the male screw 61b are formed in the reverse direction. Reference numerals 20A and 20B denote engaging members inserted into the members 62 and 63, respectively. First, the assembly structures 62 and 63 are brought close to the joint member 60 from both sides, the male screw 61a is inserted into the engaging member 20A, the male screw 61b is inserted into the engaging member 20B, and then the male screw 61a, The male screws 61a and 61b are pushed into the hooks provided inside the engaging members 20A and 20B so that at least one peak of 61b is located behind the position of the hooks formed on the engaging members 20A and 20B. Perform assembly work.

  Next, when the joint member 60 is rotated, the male screw 61a and the hook provided inside the engaging member 20A continue to be spirally engaged, and the male screw 61a is inserted into the back of the engaging member 20A. The male screw 61b is spirally engaged with the hook in the engagement member 20B and inserted into the back of the engagement member 20B. In this manner, the member 62 and the member 63 can be easily coupled to each other with a predetermined distance without using a tool such as a screwdriver by the joint member 60 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. 7 is an explanatory view showing a structure of a joint member 70 according to the third embodiment of the present invention and a method of attaching an assembly structure comprising the assembly structure 74 and members 75a and 75b using the joint member 70. , 70 is a joint member formed with a male screw 71 on one end side and a head 72 having a hexagonal hole on the other end side, 75a is a plate-like member, 75b is an opening 76 for penetrating the joint member 70. It is a member provided. Reference numeral 74 denotes a member into which the engaging member 20 is inserted. First, the joint member 60 is inserted into the opening 76 and further inserted into the engagement member 20.

  Subsequently, the male screw 71 is pushed into the hook provided inside the engaging member 20 so that at least one mountain of the male screw 71 is located behind the position of the hook formed on the engaging member 20. Perform assembly work. Next, when the hexagon 73 is fitted into a hexagon hole (not shown) and rotated, the male screw 71 and the hook provided inside the engagement member 20 continue to be spirally engaged, It is inserted into the back of the engaging member 20. In the present embodiment, the male screw 71 is spirally inserted into the engaging member 20, whereby the assembly structure 74 and the assembly structure composed of the members 75a and 75b can be firmly coupled. Further, since the joint member 70 is configured so as not to be seen by the plate-like member 75a, 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 75a and 75b. There is an effect that can be.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 8 (a) to 8 (f). FIG. 8A is a perspective view of a joint member 80 used in the present embodiment. The joint member 80 includes a joint coupling portion 81 having an external thread formed on the outer surface, and a head portion 82 that fixes the joint coupling portion 81. And a flange 83 that is fixed to the head portion and is rotated by pinching the joint coupling portion 81 by hand, and an upper surface 84 of the head portion 82.

  Next, with reference to FIGS. 8B to 8F, the structure of the joint member 80 according to the fourth embodiment, and the assembly structure 86 and the assembly structure 87 using the joint member 80 are attached. A method will be described. First, as shown in FIG. 8 (b), the flange 83 is grasped by hand, the joint coupling portion 81 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. 8C and 8D, the joint coupling portion 81 is rotated until the side surface flat portion 85 of the head portion 82 contacts the surface of the assembly structure 86. Subsequently, as shown in FIG. 8E, an assembly structure 87 provided with a recess 88 for inserting the head portion 82 and an opening 89 for penetrating the joint coupling portion 81 is obtained as shown in FIG. As shown in FIG. 4, the head portion 82 is covered with the recess 88, and the joint coupling portion 81 is assembled so as to penetrate the opening portion 89. The assembly structure 86 and the assembly structure 87 can be firmly coupled without using an assembly tool such as a hexagon. Moreover, since the whole joint member 80 is completely accommodated in the recessed part 88 provided in the assembly structure 87, the beauty | look 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, a plurality of hooks constituting the same hook group press the joint member from at least two places in a balanced manner in the central axis direction, so that the joint member is stably engaged. It can be held by.

  Further, in the second to fourth embodiments, the joint members 60, 70, 80 have been described as being provided with male screws. However, the joint members 60, 70, 80 are configured to be provided with locking portions 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. Moreover, although it demonstrated using the engaging member 20 in the above, it is the same even if the engaging member 40 is used.

  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 surfaces 23a, 23b, 23c First hook groups 24a, 24b, 24c Second hook groups 43a, 43b, 44a, 44b Hook 45 Hook first inclined surface 47 Inner surface 48 of engaging member Engaging member end surface support portions 481-488 Protrusions 49, 410 Lines 51, 52 between the inner surface of the engagement member and the base of the hook 51, 52 Assembly structure 60 Joint members 61a, 61b Male screw 62, 63 Assembly structure 70 Joint member 71 Male screw 72 Head 73 Hexagon 74 Assembly structure Object 75a, 75b Member 76 Opening 80 Joint member 81 Joint coupling part 82 Head part 83 Flange 86, 87 sets Standing structure 88 Recess 89 Opening

Claims (5)

A rod-shaped joint member;
A coupling structure for connecting two members by connecting the joint member and the engagement member, and a hollow engagement member for inserting the joint member;
A joint member engaging portion is formed on the outer peripheral portion of the joint member.
An inner diameter of an inlet of the engagement member into which the joint member is inserted is substantially equal to an outer diameter 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,
Both sides of the hook in the central axis direction of the engagement member are formed at an acute angle with respect to the depth direction of the inner surface of the engagement member,
The hook includes a first hook group formed on the same plane and a second hook group formed on the same plane separated by a predetermined distance from the plane,
An engagement member end surface support portion for supporting the joint member having a plurality of concave portions and convex portions as viewed from the upper surface of the engagement member is provided at the inlet.
The base of the hook is formed between the convex portions in a plane,
A member coupling structure, wherein a line formed by a base of the hook and an inner surface of the engaging member is substantially a straight line.   The joint member engaging portion is formed on both sides of the joint member, and each inclination angle formed by the concave portion and the convex portion is opposite to the longitudinal direction of the joint member. The member coupling structure according to claim 1.   The member coupling structure according to claim 1, wherein a recess is provided in a central portion of the joint member along a longitudinal direction of the joint member. The pitch Lf between the hook groups and the pitch D between the concave portions or the convex portions of the joint members are provided according to the following formulas, and the hook groups and the joint members are provided. The member connection structure according to any one of the preceding claims.
Lf = D × (K ± α)
Here, K is an integer and α is a fraction. An assembly structure having the engagement member and the joint member according to claim 1,
The assembly structure includes a first coupled member into which the engagement member is inserted,
A second coupled member into which the joint member is inserted;
The assembly structure characterized by having.

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