Linkage mechanism
The connecting mechanism simplifies the assembly of multiple members by using a protrusion and engaging portion to facilitate easy and stable attachment, addressing the inefficiencies of conventional bolt-and-nut methods.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- GIFU PLAST IND CO LTD
- Filing Date
- 2022-05-27
- Publication Date
- 2026-06-15
Smart Images
Figure 0007873844000001 
Figure 0007873844000002 
Figure 0007873844000003
Abstract
Description
【Technical Field】 【0001】 The present invention relates to a coupling mechanism. 【Background Art】 【0002】 When connecting a plurality of members, bolts and nuts are used, or an adhesive is applied for joining. Patent Document 1 discloses an invention related to an assembled shelf with a plurality of shelf boards assembled. Shelf supports for supporting the shelf boards are provided with shelf receivers and horizontal rails. And, the plurality of shelf boards are placed on the shelf receivers and horizontal rails attached to the supports. When assembling the assembled shelf, bolts are inserted into these holes and tightened in a state where the holes formed in the connecting fitting supporting the horizontal rail, the holes formed in the shelf receiver, the holes formed in the support, and the screw holes of the nut are aligned with each other. After fixing the bearing and the horizontal rail to the support, the shelf boards are sequentially placed. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Utility Model Publication No. 54-5220 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 By the way, in the conventional connection with bolts and nuts, accurate alignment of a plurality of holes and bolts is required. Also, if there are a plurality of connection points, connection work at the connection points is necessary. There is a demand for improvement in the connection workability when connecting a plurality of members. 【Means for Solving the Problems】 【0005】 To solve the above problems, the present invention provides a connecting mechanism for connecting a plurality of members, comprising: a hole formed through the first member; a protrusion formed on the second member; and a fixing member inserted from one side of the hole in the first member and attached to the protrusion protruding from the other side, wherein the fixing member is provided with an engaging portion that engages with an engaging portion formed on the protrusion, and the movement of the second member relative to the first member is restricted by the engagement of the engaging portion with the engaging portion. 【0006】 According to the above configuration, by inserting the protrusion formed on the second member into the hole formed through the first member, the first member and the second member can be temporarily fixed in a positioned state. Then, by engaging the fixing member with the protrusion that is protruding from the hole, the first member and the second member can be fixed in a connected state. This improves the ease of connecting the first member and the second member. 【0007】 In the above configuration, the fixing member is a restricting member having a cylindrical portion having an inner surface that abuts against the outer surface of the protrusion, the cylindrical portion is provided with a projection that protrudes inward from the inner surface and serves as the engaging portion, the engaged portion is a groove provided on the outer surface of the protrusion, and the restricting member preferably restricts the movement of the second member relative to the first member by the projection engaging with the groove. 【0008】 With the above configuration, the protrusion of the protrusion is prevented from coming out of the hole by a simple operation of engaging the projection of the regulating member with the groove of the protrusion. The regulating member can be easily attached to the protrusion. 【0009】 In the above configuration, the protrusion is formed in a cylindrical shape, the cylindrical portion is formed in such a way that its inner surface is rotatable along the outer surface of the protrusion when the regulating member is attached to the protrusion that protrudes from the other side, and a plurality of relatively large diameter protrusions are formed on the outer surface of the protrusion, the groove extends in a direction perpendicular to the protrusion direction of the protrusion at the base end of the protrusion, and it is preferable that the protrusion engages with the groove when the regulating member is attached to the protrusion that protrudes from the other side and rotates. 【0010】 According to the above configuration, the projection formed on the inner surface of the cylindrical portion of the restricting member is aligned with a position other than the protrusion formed on the outer surface of the protrusion, and the cylindrical portion of the restricting member is moved toward the base end of the protrusion. Then, by rotating the cylindrical portion of the restricting member at the position of the groove formed in the protrusion, the restricting member can be fixed to the protrusion. With a simple operation, the protrusion is prevented from coming out of the hole. The restricting member can be easily attached to the protrusion. 【0011】 In the above configuration, it is preferable that the protrusion has a transverse hole formed through it, which serves as the engaged portion and extends intersecting the direction of protrusion of the protrusion, and that the side wall of the cylindrical portion has a through hole formed in it that extends intersecting the cylindrical portion, and that the through hole communicates with the transverse hole when the projection is engaged with the groove, and that the fixing member further comprises a rod-shaped member having a rod-shaped engaging portion that is inserted into the transverse hole and the through hole and serves as the engaged portion that restricts the protrusion from coming out of the hole. 【0012】 According to the above configuration, the rod-shaped engaging portion of the rod-shaped member is inserted into the lateral hole of the protrusion inserted into the hole, and into the through hole of the cylindrical portion of the regulating member attached to the protrusion. As a result, the regulating member is firmly fixed to the protrusion, and the connection between the first member and the second member is stabilized. 【0013】 In the above configuration, it is preferable that the first member comprises a pair of holes formed through it, a pair of protrusions formed protruding from the second member, and a regulating member attached to each of the pair of protrusions that are inserted into the holes in the first member from one side and protruding from the other side, wherein the regulating member has an arm that extends radially from the outer surface of the cylindrical portion and has a length between the opposing outer surfaces of the pair of cylindrical portions attached to the pair of protrusions. 【0014】 According to the above configuration, when a restricting member is attached to a pair of protrusions, the arm portion can be positioned between the opposing outer surfaces of the protrusions. By covering the space between the pair of protrusions with the arm portion, the external shape of the connecting mechanism can be improved. 【0015】 In the above configuration, it is preferable that an engaging projection is formed on either the tip or base end of the arm, and an engaging recess that engages with the engaging projection is formed on the other end. 【0016】 With the above configuration, the same restricting member can be attached to each of the pair of protrusions, allowing them to engage with each other at the tip and base of the arm. This ensures that the restricting member is securely fixed. 【0017】 In the above configuration, the protrusion has a lateral hole formed therein, which serves as the engaged portion and extends intersecting the direction of protrusion of the protrusion. The fixing member is a rod-shaped member having a rod-shaped engaging portion that is inserted into the lateral hole of the protrusion protruding from the other side and restricts the protrusion from coming out of the hole. Preferably, the rod-shaped engaging portion is longer than the opening diameter of the hole. 【0018】 According to the above configuration, inserting a rod-shaped member into the lateral hole formed in the protrusion restricts the protrusion from coming out of the hole. By using a rod-shaped member inserted into the lateral hole as the fixing member, it can be easily installed with a simple configuration. The ease of connecting the first member and the second member can be improved. 【0019】 In the above configuration, it is preferable to include a plurality of the hole portions formed through the first member, a plurality of the convex portions protruding from the second member, and a single rod-shaped member that is inserted from one surface side of the hole portions in the first member and inserted into the lateral holes of the plurality of the convex portions protruding from the other surface side. 【0020】 According to the above configuration, a plurality of convex portions can be fixed with a single rod-shaped member. The connection mechanism is simplified, and the connection workability can be improved. 【Effects of the Invention】 【0021】 According to the present invention, the connection workability when connecting a plurality of members can be improved. 【Brief Description of the Drawings】 【0022】 [Figure 1] It is a perspective view of a shelf having the connection mechanism of the present embodiment. [Figure 2] It is a perspective view of the connection mechanism. [Figure 3] It is an exploded perspective view of the connection mechanism. [Figure 4] It is a perspective view of the convex portion. [Figure 5] It is a front-side perspective view of a regulating member as a fixing member. [Figure 6] It is a back-side perspective view of the regulating member. [Figure 7] It is a perspective view of a regulating member of a modification example. [Figure 8] It is a perspective view of a regulating member of a modification example. [Figure 9] It is a perspective view of a connection mechanism as a modification example having a rod-shaped member as a fixing member. [Figure 10] It is a perspective view of a modification example of the connection mechanism. [Figure 11] It is a diagram for explaining a modification example of the connection mechanism. <https: / / patentscope.wipo.int / search / en / detail.jsf?docId=WO2019073424A1&recNum= [Figure 12] It is a diagram for explaining a modification example of the connection mechanism. 【Modes for Carrying Out the Invention】 【0023】 A coupling mechanism C, which is one embodiment of the present invention, will now be described. <About coupling mechanism C> As shown in Figure 1, the connecting mechanism C of this embodiment is applied to a shelf 1 in which three shelf boards 3 are stretched between a pair of side panels 2. The connecting mechanism C connects the side panels 2 and the shelf boards 3. 【0024】 As shown in Figures 1 to 3, the side plate 2 is a rectangular plate. Multiple holes 21 are formed through the side plate 2. The shelf board 3 has a mounting portion 31 made of a rectangular plate extending horizontally and connecting portions 32 hanging down from both longitudinal ends of the mounting portion 31. A protrusion 40 is integrally formed on the connecting portion 32, which protrudes in the longitudinal direction of the mounting portion 31. 【0025】 The shelf board 3 is assembled to the side plate 2 with the protrusions 40 of the connecting portion 32 inserted into the holes 21 of the side plate 2. Each of the protrusions 40 that protrude from the holes 21 is fitted with a restricting member 50, which serves as a fixing member to restrict the movement of the shelf board 3 relative to the side plate 2. 【0026】 As shown in Figure 3, a rod-shaped member 60 is inserted inside the protrusion 40 inserted into the hole 21, and inside the regulating member 50 attached to the protrusion 40. The connecting mechanism C of this embodiment is composed of a hole 21, a protrusion 40, a restricting member 50, and a rod-shaped member 60. The side plate 2 in which the hole 21 is formed corresponds to the first member as defined in the claim, and the shelf plate 3 in which the protrusion 40 is formed corresponds to the second member as defined in the claim. The following describes each component of the connecting mechanism C. 【0027】 <Regarding hole 21> As shown in Figure 3, the holes 21 are provided at both ends of the side plate 2 in the short direction and are arranged side by side in the short direction (horizontal direction). As shown in Figure 1, the side plate 2 has three pairs of holes 21 arranged side by side in the short direction (horizontal direction) in the longitudinal direction (vertical direction). The horizontal spacing D1 between each pair of holes 21 is the same. Also, the opening diameter D2 of all holes 21 is the same. In the following, the horizontal direction and vertical direction will be based on the state in which the shelf 1 is placed on the floor and the side plate 2 and the shelf board 3 are connected by the connecting mechanism C. 【0028】 <Regarding the protruding part 40> As shown in Figures 3 and 4, the protrusions 40 are provided at both horizontal ends of the connecting portion 32 of the shelf board 3. A pair of protrusions 40 are arranged side by side horizontally. All the protrusions 40 on the shelf board 3 are the same shape and size. The horizontal spacing between pairs of protrusions 40 is also the same. 【0029】 As shown in Figure 4, the protrusion 40 is cylindrical overall. If the side of the protrusion 40 that is connected to the shelf board 32 is considered the base end and the side opposite the connecting part 32 is considered the tip end, then a base portion 41 is formed on the base end of the protrusion 40. The part of the protrusion 40 other than the base portion 41 that is on the tip end of the protrusion 40 is referred to as the protrusion body 42. 【0030】 The outer diameter of the base portion 41 is slightly smaller than the opening diameter D2 of the hole portion 21. Also, the protruding length of the base portion 41 is approximately the same as the thickness of the side plate 2. A pair of protrusions 43 are formed on the outer surface of the main body 42 of the protrusion, extending in the direction of projection of the protrusion 40. The pair of protrusions 43 are formed at horizontally opposing positions on the protrusion 40. The outer diameter of the protrusions 43 is approximately the same as the outer diameter of the base 41. Due to the formation of the pair of protrusions 43, a relatively smaller diameter recessed ridge 44 is formed at vertically opposing positions on the protrusion 40. The circumferential length of the pair of protrusions 43 is approximately 1 / 4 of the outer circumference of the protrusion 40. Similarly, the circumferential length of the pair of recessed ridges 44 is approximately 1 / 4 of the outer circumference of the protrusion 40. 【0031】 As shown in Figure 4, a groove 45 is formed at the base end of the protrusion 43, extending in a direction perpendicular to the protruding direction of the protrusion 40. The groove 45 is formed along the entire length of the protrusion 43 in the radial direction of the protrusion 40. The outer diameter of the protrusion 40 in the portion where the groove 45 is formed is the same as the outer diameter of the recessed groove 44. In other words, the groove 45 is formed to extend from the recessed groove 44. The groove 45 functions as an engaged portion into which the projection 53, which will be described later, engages. 【0032】 A horizontally extending lateral hole 46 is formed through the protrusion 40. The lateral hole 46 is formed at the positions of a pair of protrusions 43 on the main body 42 of the protrusion. The opening diameter of the lateral hole 46 is constant. The lateral hole 46 functions as an engaged portion into which the rod-shaped engaging portion 61 of the rod-shaped member 60, which will be described later, engages. 【0033】 <Regarding the regulatory member 50> As shown in Figures 5 and 6, the regulating member 50 has a cylindrical tube portion 51 and an arm portion 52 extending radially outward from the outer surface 51a of the tube portion 51. In the arm portion 52, the side facing the tube portion 51 is referred to as the base end, and the side opposite the tube portion 51 is referred to as the tip end. 【0034】 As shown in Figure 6, the cylindrical portion 51 is formed in a substantially cylindrical shape. A pair of projections 53 are formed on one end edge of the cylindrical portion 51, extending radially inward from the inner surface 51b of the cylindrical portion 51. This one end edge is the end edge located on the base 41 side of the projection 40 when the regulating member 50 is attached to the projection 40. This one end edge side is referred to as the back side of the regulating member 50, and the other end edge side is referred to as the front side of the regulating member 50. The back surface of the cylindrical portion 51 and the back surface of the projections 53 are formed flush with each other. 【0035】 As shown in Figure 6, the pair of projections 53 are formed on the inner surface 51b of the cylindrical portion 51 at opposing positions. The pair of projections 53 are facing each other in the horizontal direction (the direction in which the arm portion 52 extends). 【0036】 The inner diameter of the projection 53 is slightly larger than the outer diameter of the groove 44 of the convex portion 40, and smaller than the outer diameter of the groove 43. In other words, the inner diameter of the projection 53 is slightly larger than the outer diameter of the convex portion 40 in the area where the groove 45 is formed, and smaller than the outer diameter of the groove 44. The circumferential length of each pair of projections 53 is about 1 / 4 of the circumferential length of the inner surface 51b of the cylindrical portion 51. Also, the inner diameter of the cylindrical portion 51 is slightly larger than the outer diameter of the groove 43 of the convex portion 40. Therefore, if the projection 53 of the regulating member 50 is moved toward the base portion 41 along the groove 44 to match the position of the groove 44 of the convex portion 40, and the projection 53 is fitted so that it is in the position of the groove 45, the inner surface 51b of the cylindrical portion 51 becomes rotatable along the outer surface 43a of the groove 43 of the convex portion 40. 【0037】 A pair of through holes 54 are formed in the side wall of the cylindrical portion 51, penetrating the side wall. The pair of through holes 54 are opposite each other in the horizontal direction (the direction in which the arm portion 52 extends). The opening diameter of the through holes 54 is approximately the same as the opening diameter of the lateral hole 46 of the protrusion 40. 【0038】 As shown in Figures 5 and 6, the arm portion 52 has a semi-cylindrical arm body portion 55 and a covering plate portion 56 provided on the tip side of the arm body portion 55. The arm body portion 55 has a semi-circular insertion portion 57 that communicates with the through hole 54. The through hole 54 and the insertion portion 57 function as engaged portions that engage with the rod-shaped engaging portion 61 of the rod-shaped member 60, which will be described later. The inner diameter of the insertion portion 57 is about the same as the opening diameter of the lateral hole 46 of the protrusion 40 and the opening diameter of the through hole 54. 【0039】 As shown in Figure 5, the covering plate portion 56 extends along the surface end face of the cylindrical portion 51 on the surface side of the arm body portion 55. The horizontal length D3 of the covering plate portion 56 is about half the horizontal length of the arm portion 52. As shown in Figures 5 and 6, the vertical length D4 of the covering plate portion 56 is about twice the vertical length D5 of the arm body portion 55. 【0040】 <Regarding the rod-shaped member 60> As shown in Figure 3, the rod-shaped member 60 is formed in a long, cylindrical or columnar shape. Its length is approximately the same as the horizontal length of the side plate 2. Its diameter is slightly smaller than the opening diameter of the lateral hole 46 of the protrusion 40, the opening diameter of the through hole 54, and the inner diameter of the insertion portion 57. 【0041】 The rod-shaped member 60 functions as an engaging part that is inserted into and engages with the lateral hole 46 of the protrusion 40 of the shelf board 3, the through hole 54 of the cylindrical portion 51 of the restricting member 50, and the insertion portion 57 of the arm portion 52. In this embodiment, the rod-shaped member 60 has a rod-shaped engaging part 61 whose almost entire length engages with the lateral hole 46, the through hole 54, and the insertion portion 57. 【0042】 <Regarding the operation of coupling mechanism C> Next, the operation of the coupling mechanism C will be explained along with the coupling method. As shown in Figure 3, one side panel 2 is held upright, and a protrusion 40 formed on one end of one shelf board 3 is inserted into a pair of holes 21 arranged horizontally side by side. This temporarily fixes one end of the shelf board 3 to the side panel 2. Next, the other side panel 2 is held upright, and a protrusion 40 formed on the other end of the shelf board 3 that was temporarily fixed earlier is inserted. This holds the two temporarily fixed side panels 2 and the one shelf board 3 upright. The same procedure is followed for the other two pairs of holes 21 arranged side by side in the side panel 2, and the shelf boards 3 are temporarily fixed in place. 【0043】 The outer diameter of the base 41 of the protrusion 40 is slightly smaller than the opening diameter D2 of the hole 21. Also, the protruding length of the base 41 is about the same as the thickness of the side plate 2. Therefore, when the protrusion 40 is inserted into the hole 21 and temporarily fixed, the base 41 of the protrusion 40 is held within the hole 21 with play suppressed. In addition, the main body 42 of the protrusion 40 protrudes from the outer surface of the side plate 2. 【0044】 Next, the restricting member 50 is attached to the protruding convex body 42. With the back side of the restricting member 50 facing the side plate 2, the projection 53 formed on the cylindrical portion 51 is aligned with the position of the groove 44 on the convex body 42. In other words, it is positioned on the convex 40 so that the arm portion 52 extends in the vertical direction. The restricting member 50 is moved toward the base portion 41 while the projection 53 follows the groove 44. 【0045】 The inner diameter of the projection 53 is slightly larger than the outer diameter of the groove 44 of the convex portion 40, and smaller than the outer diameter of the groove 43. Also, the circumferential length of the projection 53 is about 1 / 4 of the circumferential length of the inner surface 51b of the cylindrical portion 51, and the circumferential length of the groove 44 is about 1 / 4 of the outer circumference of the convex portion 40. Therefore, the projection 53 of the regulating member 50 moves toward the base end of the convex portion 40 along the groove 44 while suppressing rattle. 【0046】 Once the projection 53 has moved to the base end of the convex body 42, the regulating member 50 is rotated. The regulating member 50, which is attached to one of the pair of convex parts 40, is rotated so that the arm portion 52 extends toward the other convex part 40. The outer diameter of the groove 45 formed on the base end side of the convex ridge 43 is the same as the outer diameter of the concave ridge 44. Therefore, as the regulating member 50 rotates, the projection 53 moves along the groove 45, and the projection 53, as the engaging portion, engages with the groove 45, which is the engaged portion. 【0047】 The restricting members 50 attached to the pair of protrusions 40 are rotated so that the arms 52 of the pair of restricting members 50 extend parallel to each other. The circumferential length of the projection 53 is about 1 / 4 of the circumferential length of the inner surface 51b of the cylindrical portion 51, and the circumferential length of the protrusion 43 is about 1 / 4 of the outer circumference of the protrusion 40. In addition, the pair of projections 53 face each other in the horizontal direction (the direction in which the arms 52 extend), and the pair of protrusions 43 face each other in the horizontal direction on the protrusion 40. Therefore, when the arms 52 of the pair of restricting members 50 extend parallel to each other, the projections 53 engage with the groove 45 along their entire length. The engagement of the projections 53 with the groove 45 restricts the protrusion 40 from coming out of the hole 21, thereby restricting the movement of the shelf 3 relative to the side plate 2. 【0048】 The cylindrical portion 51 of the restricting member 50 has a pair of through holes 54 formed opposite each other in the horizontal direction (the direction in which the arm portion 52 extends). The arm body portion 55 of the restricting member 50 has a semicircular insertion portion 57 in the direction in which the arm portion 52 extends, communicating with the through holes 54. Furthermore, the protrusion 40 of the shelf board 3 has a horizontally extending lateral hole 46 formed through it. Therefore, when the arm portions 52 of the pair of restricting members 50 extend parallel to each other, a cylindrical space is formed by the pair of insertion portions 57, the through holes 54, and the lateral hole 46, which communicate with each other. 【0049】 Next, the rod-shaped member 60 is inserted into the cylindrical space formed by the pair of insertion portions 57, the through hole 54, and the lateral hole 46. The rod-shaped member 60 (rod-shaped engaging portion 61), which acts as the engaging portion, engages with the insertion portion 57, the through hole 54, and the lateral hole 46, which act as the engaged portion. 【0050】 The diameter of the rod-shaped member 60 (rod-shaped engaging portion 61) is slightly smaller than the opening diameter of the lateral hole 46, the opening diameter of the through hole 54, and the inner diameter of the insertion portion 57 of the protrusion 40. Therefore, the rod-shaped engaging portion 61 is held in a cylindrical space with play suppressed. In addition, the length of the rod-shaped member 60 is approximately the same as the horizontal length of the side plate 2. Therefore, the rod-shaped member 60 is engaged without protruding from the horizontal edge of the side plate 2. The engagement of the rod-shaped member 60 with the insertion portion 57, the through hole 54, and the lateral hole 46 restricts the rotation of the regulating member 50, and stabilizes the engagement state of the regulating member 50 with respect to the protrusion 40. 【0051】 As shown in Figures 2, 5, and 6, the horizontal length D3 of the covering plate portion 56 of the restricting member 50 is approximately half the horizontal length of the arm portion 52. Also, the vertical length D4 of the covering plate portion 56 is approximately twice the vertical length D5 of the arm body portion 55. Therefore, when the rod-shaped member 60 is engaged, the surface side of the arm portion 52 of the restricting member 50 is covered by the covering plate portion 56 of one restricting member 50 and the covering plate portion 56 of the other restricting member 50. The inserted rod-shaped member 60 is covered and its exposure to the outside is suppressed. 【0052】 According to this embodiment, the following effects can be obtained. (1) The connecting mechanism C of this embodiment includes a hole 21 formed through the side plate 2, a protrusion 40 formed on the shelf plate 3, and a restricting member 50 that is inserted from one side of the hole 21 in the side plate 2 and attached to the protrusion 40 that protrudes from the other side. The restricting member 50 is provided with a projection 53 that engages with a groove 45 in the protrusion 40. The movement of the shelf plate 3 relative to the side plate 2 is restricted by the engagement of the projection 53 with the groove 45. 【0053】 Therefore, by inserting the protrusion 40 into the hole 21, the side plate 2 and the shelf plate 3 can be temporarily fixed in a positioned state. After temporary fixing, by engaging the regulating member 50 with the protrusion 40 that is protruding from the hole 21, the side plate 2 and the shelf plate 3 can be fixed in a connected state. Since a temporarily fixed state can be created before engaging the regulating member 50, the installation of the regulating member 50 is easy. This improves the ease of connecting the side plate 2 and the shelf plate 3. 【0054】 (2) After inserting the protrusion 40 into the hole 21 and temporarily fixing it, the projection 53 of the restricting member 50 and the groove 45 of the protrusion 40 are engaged to fix the protrusion 40 in a non-detachable state. Therefore, there is no need to prepare additional tools during the connection process. Furthermore, as with connections using screws and bolts, precise positioning of screw holes and nuts is not required. This improves the efficiency of the connection process. 【0055】 (3) The regulating member 50 has a cylindrical tube portion 51. The inner surface 51b of the tube portion 51 abuts against the outer surface 43a of the protrusion 43 of the protrusion 40. Therefore, the cylindrical portion 51 can rotate smoothly along the outer surface 43a of the protrusion 43. This improves the ease of connection. 【0056】 (4) The cylindrical portion 51 of the restricting member 50 is provided with a projection 53 that protrudes inward from the inner surface 51b as an engaging portion. The projection 53 engages with the groove 45, which is an engaged portion, as the cylindrical portion 51 rotates. This restricts the movement of the shelf board 3 relative to the side board 2. 【0057】 The protrusion 40 can be prevented from coming out of the hole 21 by the simple operation of engaging the projection 53 with the groove 45. The regulating member 50 is easy to attach to the protrusion 40, and the connection work between the side plate 2 and the shelf plate 3 is easy. 【0058】 (5) Multiple protrusions 43 are formed on the outer surface of the protrusion 40, extending in the direction of projection of the protrusion 40 and having a relatively large diameter. The groove 45, which serves as the engaging portion, extends at the base end of the protrusion 43 in a direction perpendicular to the direction of projection of the protrusion 40. In addition, the parts other than the protrusions 43 are recessed grooves 44 with a relatively small diameter. 【0059】 Therefore, by aligning the projection 53 with the position of the groove 44, inserting the cylindrical portion 51 of the restricting member 50 towards the base end of the protrusion 40, and rotating the cylindrical portion 51 at the position of the groove 45 formed in the protrusion 40, the restricting member 50 can be fixed to the protrusion 40. The restricting member 50 can be attached to the protrusion 40 with a simple operation. 【0060】 (6) A transverse hole 46 is formed through the protrusion 40, extending perpendicular to the direction of protrusion of the protrusion 40. In addition, a through hole 54 is formed in the side wall of the cylindrical portion 51 of the restricting member 50, extending perpendicular to the cylindrical portion 51. The through hole 54 communicates with the transverse hole 46 when the projection 53 is engaged with the groove 45. The rod-shaped member 60 is inserted into the communicating transverse hole 46 and through hole 54 to restrict the protrusion 40 from coming out of the hole 21. 【0061】 Therefore, the restricting member 50 is firmly fixed to the protrusion 40. The engagement of the rod-shaped member 60 stabilizes the connection between the side plate 2 and the shelf plate 3. (7) A pair of holes 21 are formed in the side plate 2, and a pair of protrusions 40 are formed in the shelf plate 3. The same restricting member 50 is attached to each of the pair of protrusions 40. 【0062】 Therefore, the number of parts can be reduced. (8) A protrusion 40 is inserted into each of the pair of holes 21, the same restricting member 50 is attached to each of the protrusions 40, and a single rod-shaped member 60 is inserted into each of the pair of protrusions 40. 【0063】 Therefore, the number of parts can be reduced compared to the case where a rod-shaped member 60 is inserted into each of the protrusions 40. (9) The regulating member 50 has an arm portion 52 that extends radially from the outer surface 51a of the cylindrical portion 51. The arm portion 52 has a length between the opposing outer surfaces 51a of the cylindrical portion 51 of the pair of regulating members 50 that are attached to the pair of protrusions 40. 【0064】 Therefore, when the restricting member 50 is attached to the pair of protrusions 40, the arm portion 52 of the restricting member 50 is positioned between the pair of protrusions 40. By covering the space between the pair of protrusions 40 with the arm portion 52, the exposure of the rod-shaped member 60 can be suppressed. The external shape of the connecting mechanism C can be improved. 【0065】 (10) The arm portion 52 has a semi-cylindrical arm body portion 55 and a covering plate portion 56. The covering plate portion 56 has a length D3 that is about half the length of the arm portion 52 and a vertical length D4 that is about twice the length of the arm body portion 55. 【0066】 Therefore, when the restricting member 50 is attached to the pair of protrusions 40, the exposure of the rod-shaped member 60 can be further suppressed. The external shape of the connecting mechanism C can be improved. The above embodiment can be modified as follows. Note that the above embodiment and the following modifications can be combined and applied to the extent that they do not contradict each other technically. 【0067】 The shape of the restricting member 50 is not limited to that of the above embodiment. For example, as shown in Figure 7, an engaging projection 58 extending along the protruding direction of the arm 52 may be formed on the covering plate portion 56 at the tip of the arm portion 52, and an engaging recess 59 extending along the protruding direction of the arm portion 52 may be formed on the base end of the arm body portion 55 of the arm portion 52. By rotating the restricting member 50 and engaging the engaging projection 58 with the engaging recess 59, the rotation of the pair of restricting members 50 is restricted and fixed. With such a shape, the connected state of the connecting mechanism C can be stabilized without using a rod-shaped member 60. 【0068】 • When engagement recesses 59 and engagement protrusions 58 are provided, they do not have to be shaped to extend along the protruding direction of the arm portion 52. For example, they may be point-shaped engagement recesses 59 and engagement protrusions 58. Also, multiple engagement recesses 59 and engagement protrusions 58 may be formed. 【0069】 The arm portion 52 does not necessarily have to be provided. In this case, the regulating member 50 consists only of the cylindrical portion 51, and the cylindrical portion 51 is engaged with one protrusion 40 and fixed to one protrusion 40 with a single rod-shaped member 60. 【0070】 - The main arm portion 55 does not necessarily need to have an insertion portion 57. In this case as well, one rod-shaped member 60 can be fixed to one protrusion 40 and one restricting member 50. If the rod-shaped member 60 has a length that allows it to be inserted into a pair of opposing through holes 54 in one cylindrical portion 51, the restricting member 50 will be fixed to the protrusion 40. 【0071】 • The covering plate portion 56 does not necessarily have to be provided. The cylindrical portion 51 of the restricting member 50 does not necessarily have to be cylindrical. For example, it may be rectangular. The restricting member 50 does not necessarily have to be rotatable relative to the protrusion 40. 【0072】 Instead of the restricting member 50, a restricting member 70 as shown in Figure 8 may be attached. The restricting member 70 has an arm portion 72 that has a different shape from the arm portion 52 of the restricting member 50. The insertion portion 77 into which the rod-shaped member 60 is inserted has a cylindrical tip and a semi-cylindrical base. The rod-shaped member 60 is inserted into the through hole 74 formed through the cylindrical portion 71 of the restricting member 70, the lateral hole 46 of the protrusion 40, and the insertion portion 77 to fix the restricting member 70 and the protrusion 40. At this time, in the pair of restricting members 70, the arm portions 72 which are formed in a stepped shape when viewed from the side interlock, filling the space between the pair of cylindrical portions 71 and covering the rod-shaped member 60 so that it is not exposed to the outside. 【0073】 The rod-shaped member 60 may be omitted. As shown in Figure 9, the restricting members 50 and 70 may be omitted. In this case, the connecting mechanism C consists of a hole 21, a protrusion 40, and a rod-shaped member 60. By attaching the rod-shaped member 60 with the protrusion 40 inserted into the hole 21, it is possible to restrict the protrusion 40 from coming out of the hole 21. In this case, a groove 45 is not necessary for the protrusion 40, and it is preferable that the lateral hole 46 is formed at a position offset towards the base end of the protrusion 40 compared to the above embodiment. 【0074】 With this configuration, the rod-shaped member 60 only needs to be inserted into the lateral hole 46 formed in the protrusion 40, thus simplifying the configuration of the connecting mechanism C. This further improves the ease of connecting the side plate 2 and the shelf plate 3. 【0075】 In the connecting mechanism C shown in Figure 9, one rod-shaped member 60 may be engaged with one hole 21 and one protrusion 40. In this case, if the rod-shaped member 60 is longer than the opening diameter D2 of the hole 21, it can restrict the protrusion 40 from coming out of the hole 21. 【0076】 In the above embodiment, the protrusion 40 has a lateral hole 46 that extends perpendicular to the direction of protrusion of the protrusion 40, but the lateral hole 46 does not necessarily have to be perpendicular. It is sufficient that it extends in a direction intersecting the direction of protrusion of the protrusion 40. The same applies to the through hole 54 formed in the cylindrical portion 51. The through hole 54 also needs to extend so as to intersect with the cylindrical portion 51 and be able to communicate with the lateral hole 46. 【0077】 As shown in Figure 10, the rod-shaped member 60 does not have to be a straight rod. For example, it may have a bent shape. When the rod-shaped member 60 has such a shape, the portion inserted into the through hole 54, the lateral hole 46, and the insertion portion 57 constitutes the rod-shaped engaging portion 61. 【0078】 The engagement between the protrusion 40 and the cylindrical portion 51 does not necessarily have to be between the projection 53 and the groove 45. In the restricting member 80 shown in Figure 11, a female thread 82 is formed on the cylindrical portion 81. It is then attached by screwing it onto a male thread 84 formed on the protrusion 83 of the shelf board 3. In this case as well, temporary fixing is possible by inserting the protrusion 83 into the hole 21 of the side plate 2. Furthermore, connection is possible without using any additional tools by rotating the restricting member 80. Note that in this case, the male thread 84 does not have to be cut around the entire circumference of the protrusion 83. If it is about 1 / 4 to 1 / 2 of the circumference, connection can be made with a small rotation. 【0079】 The connecting mechanism C is not limited to its application to shelf 1 as shown in Figure 1. It can be applied to any mechanism that connects multiple components together. When applying the connecting mechanism C to a storage case 90 as shown in Figure 12, a single rod-shaped member 60 may be inserted into the connecting parts arranged vertically. The storage case 90 has multiple side panels 91 and a back panel 92 arranged in the vertical direction. A connecting mechanism C1 connects the top side panel 91 and the back panel 92, a connecting mechanism C2 connects the middle side panel 91 and the back panel 92, and a connecting mechanism C3 connects the bottom side panel 91 and the back panel 92. The rod-shaped member 60 has a length equal to the vertical height of the three side panels 91, and the rod-shaped member 60 for connecting mechanisms C1, C2, and C3 is composed of a single piece. This reduces the number of parts and improves the ease of connection. 【0080】 Although the connecting mechanism C has been described as a connecting mechanism for connecting the side plate 2 and the shelf plate 3, it may also be used to connect other members in addition to the side plate 2 and the shelf plate 3. For example, a plate material with holes 21 formed through it, similar to those of the side plate 2, may be connected together with the side plate 2. In this case, for example, the protrusion 40 can be inserted with the holes 21 of the side plate 2 and the holes 21 of the plate material aligned, and the restricting member 50 can be attached. 【0081】 The number of protrusions 43 and recesses 44 on the protrusion 40 is not limited to two. There may be one or three or more. Also, the circumferential length of the protrusions 43 and recesses 44 may be longer or shorter than 1 / 4 of the outer circumference of the protrusion 40. 【0082】 The lower part of the projection 53 is not limited to two. There may be one or three or more. Also, the circumferential length of the projection 53 may be longer or shorter than 1 / 4 of the circumferential length of the inner surface 51b of the cylindrical portion 51. 【0083】 The technical concept understood from the above embodiments is described below. (i) A connecting mechanism for connecting a plurality of members, comprising a hole formed through a first member, a protrusion formed protruding from a second member, and a fixing member inserted from one side of the hole in the first member and attached to the protrusion protruding from the other side, wherein the fixing member is provided with an engaging portion that engages with an engaging portion formed on the protrusion, and the movement of the second member relative to the first member is restricted by the engagement of the engaging portion with the engaging portion. 【0084】 (b) The fixing member is a regulating member having a cylindrical portion having an inner surface that abuts against the outer surface of the protrusion, the cylindrical portion is provided with a projection that protrudes inward from the inner surface and serves as the engaging portion, and the engaged portion is a groove provided on the outer surface of the protrusion, as described in (a) above. 【0085】 (c) The coupling mechanism according to (b) above, wherein the protrusion is formed in a cylindrical shape, the cylindrical part is formed in such a way that its inner surface is rotatable along the outer surface of the protrusion when the regulating member is attached to the protrusion that protrudes from the other surface, a plurality of protrusions that are relatively large in diameter are formed on the outer surface of the protrusion, the groove extends in a direction perpendicular to the protrusion direction of the protrusion at the base end of the protrusion, and the protrusion engages with the groove when the regulating member is attached to the protrusion that protrudes from the other surface and rotates. 【0086】 (ii) The coupling mechanism according to (b) or (c) above, characterized in that a transverse hole is formed through the protrusion, which extends intersecting the direction of protrusion of the protrusion and serves as the engaged portion; a through hole is formed in the side wall of the cylindrical portion, which extends intersecting the cylindrical portion; the through hole communicates with the transverse hole when the projection is engaged with the groove; and the fixing member further comprises a rod-shaped member having a rod-shaped engaging portion that is inserted into the transverse hole and the through hole and serves as the engaged portion that restricts the protrusion from coming out of the hole. 【0087】 (e) The coupling mechanism according to any one of (b) to (d) above, comprising a pair of holes formed through the first member, a pair of protrusions formed protruding from the second member, and a regulating member inserted from one side of the holes in the first member and attached to each of the pair of protrusions protruding from the other side, wherein the regulating member has an arm portion that extends radially from the outer surface of the cylindrical portion and has a length between the opposing outer surfaces of the pair of cylindrical portions attached to the pair of protrusions. 【0088】 (f) The coupling mechanism according to (e) above, characterized in that an engaging projection is formed on either the tip or base end of the arm, and an engaging recess that engages with the engaging projection is formed on the other end. 【0089】 (t) The connecting mechanism according to any one of (a) to (f) above, wherein the protrusion has a lateral hole formed therein as the engaged portion, extending in a direction perpendicular to the direction of protrusion of the protrusion, the fixing member is a rod-shaped member having a rod-shaped engaging portion that is inserted into the lateral hole of the protrusion protruding from the other side and restricts the protrusion from coming out of the hole, and the rod-shaped engaging portion is longer than the opening diameter of the hole. 【0090】 (h) The coupling mechanism according to (t) above, characterized by comprising a plurality of holes formed through the first member, a plurality of protrusions formed protruding from the second member, and a single rod-shaped member inserted from one side of the holes in the first member and inserted into the lateral holes of the plurality of protrusions protruding from the other side. [Explanation of Symbols] 【0091】 C, C1, C2, C3…Connection mechanism D2…Opening diameter 2…Side panel (first component) 3…Shelf board (second component) 21...hole 40, 83... protruding part 43…Convex 43a…Outer surface 45… groove (engaging part) 46… transverse hole (engaging part) 50, 70, 80… regulating member (fixing member) 51, 71, 81… cylindrical part 52, 72… arm part 51a… outer surface 51b… inner surface 53… tab (engaging part) 54, 74… through hole (engaging part) 58… engaging convex part 59… engaging concave part 60… rod-shaped member (fixing member) 61… rod-shaped engaging part (engaging part) 82… female thread (engaging part) 84… male thread (engaging part)
Claims
[Claim 1] A connecting mechanism for connecting multiple members, The first member comprises a hole formed through it, a protrusion formed on the second member, and a fixing member that is inserted from one side of the hole in the first member and attached to the protrusion that protrudes from the other side. The fixing member is provided with an engaging portion that engages with the engaged portion formed on the protrusion, When the engaging portion engages with the engaged portion, the movement of the second member relative to the first member is restricted. The fixing member comprises a regulating member having a cylindrical portion having an inner surface that abuts against the outer surface of the protrusion, The cylindrical portion is provided with a projection that protrudes inward from the inner surface and serves as the engaging portion. The engaged portion is a groove provided on the outer surface of the protrusion, The restricting member restricts the movement of the second member relative to the first member by the engagement of the projection with the groove. A transverse hole, which serves as the engaged portion, is formed through the aforementioned protrusion, extending intersecting the direction of protrusion of the protrusion. A through hole is formed in the side wall of the cylindrical portion, extending intersecting the cylindrical portion. The through hole communicates with the transverse hole with the projection engaged in the groove. The connecting mechanism is characterized in that the fixing member further comprises a rod-shaped member having a rod-shaped engaging portion that is inserted into the lateral hole and the through hole and serves as the engaging portion that restricts the protrusion from coming out of the hole. [Claim 2] A connecting mechanism for connecting multiple members, The first member comprises a pair of holes formed through it, a pair of protrusions formed on the second member, and a pair of fixing members that are inserted from one side of the holes in the first member and attached to each of the protrusions that protrude from the other side. The fixing member is provided with an engaging portion that engages with the engaged portion formed on the protrusion, When the engaging portion engages with the engaged portion, the movement of the second member relative to the first member is restricted. The fixing member is a regulating member having a cylindrical portion with an inner surface that abuts against the outer surface of the protrusion, The cylindrical portion is provided with a projection that protrudes inward from the inner surface and serves as the engaging portion. The engaged portion is a groove provided on the outer surface of the protrusion, The restricting member restricts the movement of the second member relative to the first member by the engagement of the projection with the groove. The connecting mechanism is characterized in that the restricting member has an arm portion that extends radially from the outer surface of the cylindrical portion and has a length between the opposing outer surfaces of the pair of cylindrical portions attached to the pair of protrusions. [Claim 3] The coupling mechanism according to claim 2, characterized in that an engaging projection is formed on either the tip or base end of the arm, and an engaging recess that engages with the engaging projection is formed on the other end. [Claim 4] A connecting mechanism for connecting multiple members, The first member comprises a hole formed through it, a protrusion formed on the second member, and a fixing member that is inserted from one side of the hole in the first member and attached to the protrusion that protrudes from the other side. The fixing member is provided with an engaging portion that engages with the engaged portion formed on the protrusion, When the engaging portion engages with the engaged portion, the movement of the second member relative to the first member is restricted. The protrusion has a transverse hole formed therein, which serves as the engaged portion and extends intersecting the direction of protrusion of the protrusion. The fixing member is a rod-shaped member having a rod-shaped engaging portion that is inserted into the lateral hole of the protrusion that protrudes from the other side and restricts the protrusion from coming out of the hole. The rod-shaped engaging portion is longer than the opening diameter of the hole. A connecting mechanism characterized by comprising a plurality of holes formed through the first member, a plurality of protrusions formed protruding from the second member, and a single rod-shaped member inserted from one side of the holes in the first member and inserted into the lateral holes of the plurality of protrusions protruding from the other side.