Patent Publication Number: US-2022213913-A1

Title: Mounting structure for bedstead

Description:
CROSS REFERENCE TO THE RELATED APPLICATIONS 
     This is a continuation-in-part application of U.S. patent Ser. No. 16/882,776, which is based upon and claims priority to Chinese Patent Application No. 201920775150.8, filed on May 27, 2019, the entire contents of which are incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present invention relates to a mounting structure for a bedstead. 
     BACKGROUND 
     Beds are ubiquitous in people&#39;s daily life and provide comfortable places for people to rest or sleep. The bed in the prior art generally includes a bedstead, and a cross rail is arranged at the hollow position in the middle of the bedstead to stably support the mattress in place. For the folding bed in the prior art, the bedstead is generally a rectangle formed by two side rails on both sides of the bedstead and two short rails at the front end and the rear end of the bedstead. The side rail and the cross rail are generally perpendicular to each other after being connected. Both the side rail and the cross rail, however, are metal parts and need to be welded together when assembled. This not only increases labor and manufacturing costs, but welding presents risks of injury to persons and property. 
     SUMMARY 
     In order to solve the above-mentioned technical problems, an objective of the present invention is to provide a mounting structure for a bedstead. 
     The present invention is realized by the following technical solutions: 
     A mounting structure for a bedstead includes a side rail and a cross rail of the bedstead. The side rail and the cross rail are connected by a connecting member. The connecting member includes a body. 
     In an embodiment of the present invention, the body is provided with a first U-shaped groove in which the side rail is clamped. A second U-shaped groove in which the cross rail is clamped is provided on one side of the body beside the first U-shaped groove. The opening of the second U-shaped groove faces sideward relative to the first U-shaped groove. 
     In an embodiment of the present invention, the opening of the first U-shaped groove faces downward. 
     In an embodiment of the present invention, the body includes a first piece body, a second piece body and a third piece body. The first piece body, the second piece body and the third piece body are connected to form the first U-shaped groove. The first piece body and the third piece body are located at two sides of the side rail, respectively, and contact two side end surfaces of the side rail, respectively. The second piece body is located above the side rail and contacts the upper end surface of the side rail. 
     In an embodiment of the present invention, the first piece body is provided with a first hole, the side rail is provided with a second hole, and the first hole coincides with the second hole. An inserting member passes through the first hole and the second hole. Preferably, the inserting member can be a connecting screw or a connecting bolt. 
     In an embodiment of the present invention, the end surface of the first piece body and/or the third piece body in contact with the side rail is provided with a protruding column. The side rail is provided with the second hole matched with the protruding column. 
     In an embodiment of the present invention, the outer diameter of the protruding column gradually increases from one end of the protruding column inserted into the second hole to the other end of the protruding column. 
     In an embodiment of the present invention, the other end surface of the third piece body is provided with a fourth piece body, a fifth piece body and a sixth piece body, wherein the other end surface of the third piece body is opposite to the end surface of the third piece body in contact with the side rail. The fourth piece body, the fifth piece body and the sixth piece body are connected to form the second U-shaped groove. The fourth piece body and the sixth piece body contact the front end surface and the rear end surface of the cross rail, respectively. The upper end surface of the fifth piece body contacts the lower end surface of the cross rail. 
     In an embodiment of the present invention, one end of each of the fourth piece body and the sixth piece body away from the fifth piece body is provided with a curved surface. 
     In an embodiment of the present invention, the opening of the first U-shaped groove faces laterally relative to the side rail. 
     In an embodiment of the present invention, the body includes a seventh piece body, an eighth piece body, and a ninth piece body. The seventh piece body, the eighth piece body and the ninth piece body are connected to form the first U-shaped groove. The seventh piece body and the ninth piece body are located at the upper side and the lower side of the side rail, respectively, and contact the upper end surface and the lower end surface of the side rail, respectively. The eighth piece body is located at the side of the side rail and contacts the side end surface of the side rail. 
     In an embodiment of the present invention, the body does not have the first U-shaped groove but only includes a tenth piece body. The second U-shaped groove and the first hole are provided on the tenth piece body, and the end of the cross rail can be provided with a third hole matching with the first hole and the second hole. The inserting member can pass through the first hole, the second hole, and the third hole to achieve a detachable connection of the side rail, the connecting member, and the cross rail. The inserting member is preferably a connecting screw or a connecting bolt. 
     In an embodiment of the present invention, the body does not have the first U-shaped groove but includes the tenth piece body and an eleventh piece body that form an L-shaped configuration. 
     In an embodiment of the present invention, an aligning structure is further provided between the connecting member and the side rail to realize a quick alignment of the first hole and the second hole. 
     In an embodiment of the present invention, the aligning structure includes a protruding block and an aligning hole. The protruding block is provided on the side of the tenth piece body opposite to the second U-shaped groove, and the aligning hole is provided on the side rail for matching with the protruding block to realize the alignment. 
     In an embodiment of the present invention, the protruding block is provided adjacent to the first hole but not overlapped with the first hole. 
     In an embodiment of the present invention, the first hole is overlapped with the protruding block, and the aligning hole is overlapped with the second hole. 
     In an embodiment of the present invention, both the protruding block and the aligning hole are in a cylindrical shape. 
     In an embodiment of the present invention, the protruding block and the aligning hole each are in a polygon shape, and the polygon shape includes but not limited to rectangle, square, triangle, hexagon, and star shape. 
     In an embodiment, the first hole is in a stepped configuration, a diameter of which at the side adjacent to the second U-shaped groove is larger than a diameter of which at the side adjacent to the side rail. 
     The mounting structure for the bedstead of the present invention has the following advantages. 1. The cross rail and the side rail are connected by a connecting member rather than a welding process, which not only diminishes the difficulty in production, but also avoids potential injury to workers during the welding process. 2. The cross rail and the side rail can be quickly, simply and conveniently connected by the snap-fit connection. 3. The combined use of the connecting member and the inserting member achieves a rapid and detachable connection of the side rail and the cross rail, which facilitates storage and transportation. 4. The arrangement of the alignment structure between the connecting member and the side rail enables a quick alignment of the first hole and the second hole, thereby simplifying the connection. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to more clearly explain the technical solutions of the present invention, the drawings for the description of the prior art and the embodiments will be briefly illustrated hereinafter. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts. 
         FIG. 1  is a schematic diagram showing the present invention before the installation of the side rail and the cross rail. 
         FIG. 2  is a schematic view showing the present invention after the installation of the side rail and the cross rail. 
         FIG. 3  is a perspective view of the connecting member according to the first embodiment of the present invention. 
         FIG. 4  is a schematic diagram showing the connecting member according to the first embodiment of the present invention. 
         FIG. 5  is a schematic diagram showing the connecting member according to the second embodiment of the present invention. 
         FIG. 6  is a schematic diagram showing the fit of the connecting member according to the third embodiment of the present invention. 
         FIG. 7  is a schematic diagram showing the connecting member according to the third embodiment of the present invention. 
         FIG. 8  is a cross-sectional view of the connecting member along the A-A direction in  FIG. 7  assembled with the side rail 
         FIG. 9  is a schematic view showing the bedstead being assembled according to the fourth embodiment of the present invention after the installation of the side rail and the cross rail. 
         FIG. 10  is a perspective view of the connecting member according to the fourth embodiment of the present invention. 
         FIG. 11  is a cross-sectional view of the connecting member along the A-A direction in  FIG. 10  assembled with the side rail and the cross rail. 
         FIG. 12  is a perspective view of the connecting member according to the fifth embodiment of the present invention. 
         FIG. 13  is a cross-sectional view of the connecting member along the A-A direction in  FIG. 12  assembled with the side rail. 
         FIG. 14  is a schematic view showing the connecting member mounted on the side rail according to the sixth embodiment of the present invention. 
         FIG. 15  is a perspective view of the connecting member according to the sixth embodiment of the present invention. 
         FIG. 16  is a cross-sectional view of the connecting member along the A-A direction in  FIG. 15  assembled with the side rail. 
         FIG. 17  is a schematic view showing the connecting member mounted on the side rail according to the seventh embodiment of the present invention. 
         FIG. 18  is a perspective view of the connecting member according to the seventh embodiment of the present invention. 
         FIG. 19  is a cross-sectional view of the connecting member along the A-A direction in  FIG. 18  assembled with the side rail. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The technical solutions of the embodiments of the present invention will be described clearly and completely below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention. 
     The “embodiment(s)” herein refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms “upper”, “lower”, “top”, “bottom”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, which is only intended to facilitate the description of the present invention and simplify the description, not to indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms “first”, “second”, etc. are only used for the purpose of description, and should not be construed as indicating or implying relative importance or implicitly expressing the number of indicated technical features. Thus, a feature defined by “first” or “second” may expressly or implicitly include one or more of the feature. Also, the terms “first,” “second,” etc. are used to distinguish similar objects, and are not necessarily used to describe a particular order or precedence. It is understandable that such features may be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. 
     Referring to  FIG. 1  and  FIG. 2 , a mounting structure for a bedstead includes the side rail  10  and the cross rail  20  of the bedstead. In normal use, the side rail  10  and the cross rail  20  are perpendicularly connected. The side rail  10  extends along the length direction of the bedstead, that is, at the front end and the rear end of the bedstead. The cross rail  20  is located in the width direction of the bedstead, that is, at the left side end and the right side end of the bedstead. The side rail  10  and the cross rail  20  are connected by the connecting member  30 . The connecting member  30  includes the body  1 . 
     In the first embodiment of the present invention, further referring to  FIG. 3  and  FIG. 4 , the body  1  is provided with the first U-shaped groove  31  in which the side rail  10  is clamped. The opening of the first U-shaped groove  31  faces downward. The body  1  lateral to the first U-shaped groove  31  is further provided with the second U-shaped groove  32  in which the cross rail  20  is clamped. The opening of the second U-shaped groove  32  faces sideward. In the present invention, the first U-shaped groove  31  is tightly connected to the side rail  10 , and then one end of the cross rail  20  is clamped in the second U-shaped groove  32 . In use, the bedstead includes two side rails  10  parallel to each other, the connecting member  30  is connected to the corresponding position of each side rail  10 , and then the two ends of the cross rail  20  are connected to the second U-shaped grooves  32  of the two connecting members  30 , respectively. 
     Specifically, the body  1  includes the first piece body  41 , the second piece body  42  and the third piece body  43 . The first piece body  41 , the second piece body  42  and the third piece body  43  are connected to form the first U-shaped groove  31 . The first piece body  41  and the third piece body  43  are located at the two sides of the side rail  10 , respectively, and contact two side end surfaces of the side rail  10 , respectively. The second piece body  42  is located above the side rail  10  and contacts the upper end surface of the side rail  10 . 
     Further, the third piece body  43  is provided with the fourth piece body  46 , the fifth piece body  47  and the sixth piece body  48 . The fourth piece body  46 , the fifth piece body  47  and the sixth piece body  48  are connected to form the second U-shaped groove  32 . The fourth piece body  46  and the sixth piece body  48  contact the front end surface  21  and the rear end surface  22  of the cross rail  20 , respectively. The upper end surface  50  of the fifth piece body  47  contacts the lower end surface  23  of the cross rail  20 . 
     One end of each of the fourth piece body  46  and the sixth piece body  48  away from the fifth piece body  47  is provided with the curved surface  49 . 
     The first piece body  41  is provided with the first hole  44 , the side rail  10  is provided with the second hole  11 , and the first hole  44  coincides with the second hole  11 . The inserting member  40  passes through the first hole  44  and the second hole  11 . The inserting member  40  is preferably a connecting screw or a connecting bolt. Alternatively, the third piece body  43  can also be provided with a first hole corresponding to the first hole  44  of the first piece body  41 . 
     In the second embodiment of the present invention, referring to  FIG. 5 , the only difference from the first embodiment is that the first hole  44  is not provided, instead, the end surface of the first piece body  41  and/or the third piece body  43  in contact with the side rail  10  is provided with the protruding column  45 . The second hole  11  provided on the side rail  10  can be matched with the protruding column  45 . The outer diameter of the protruding column  45  gradually increases from one end inserted into the second hole  11  to the other end, to allow the protruding column  45  to smoothly slide into and be clamped inside the second hole  11 . In other words, the two ends of the protruding column  45  form a guide surface, and the guide surface can be a curved surface. 
     In the third embodiment of the present invention, referring to  FIG. 6 - FIG. 8 , the opening of the first U-shaped groove  31  faces laterally relative to the side rail  10 . In the present embodiment, the body  1  includes the seventh piece body  51 , the eighth piece body  52  and the ninth piece body  53  instead of the first piece body  41 , the second piece body  42  and the third piece body  43 . The seventh piece body  51 , the eighth piece body  52  and the ninth piece body  53  are connected to form the first U-shaped groove  31 . The seventh piece body  51  and the ninth piece body  53  are located at the upper side and the lower side of the side rail  10 , respectively, and contact the upper end surface and the lower end surface of the side rail  10 , respectively. The eighth piece body  52  is located at the side of the side rail  10  and contacts the side end surface of the side rail  10 . For a better fit, the eighth piece body  52  is provided with the first hole  44 , and the connecting member  30  is fastened with the side rail  10  by the inserting member  40  passing through the first hole  44 . The inserting member  40  is preferably a connecting screw or a connecting bolt. The end surface of the eighth piece body  52  facing opposite to the side rail  10  is provided with the fourth piece body  46 , the fifth piece body  47  and the sixth piece body  48  that are connected to form the second U-shaped groove  32 . The same parts and structures described above with respect to the first U-shaped groove  31  may be equally applied to the description of the second U-shaped groove  32 . 
     In the fourth embodiment of the present invention, referring to  FIG. 9 - FIG. 11 , the body  1  only includes the tenth piece body  56 , the second U-shaped groove  32  and the first hole  44  are provided on the tenth piece body  56 . The second hole  11  on the side rail  10  coincides with the first hole  44 , and the end of the cross rail  20  can be provided with the third hole  24  matching the first hole  44  and the second hole  11 . The inserting member  40  sequentially passes through the second hole  11 , the first hole  44 , and the third hole  24  to fasten the side rail  10 , the connecting member  30 , and the cross rail  20  together. The first hole  44  is in a stepped configuration, a diameter of which at the side adjacent to the second U-shaped groove  32  is larger than a diameter of which at the side adjacent to the side rail  10 . The inserting member  40  is preferably a connecting screw or a connecting bolt. The cooperation of the inserting member  40  and the holes realizes a detachable connection of the side rail  10 , the connecting member  30 , and the cross rail  20 . 
     In the fifth embodiment of the present invention, referring to  FIG. 12  and  FIG. 13 , the difference from the fourth embodiment is that the body further includes the eleventh piece body  57  which forms an L-shaped configuration with the tenth piece body  56 . The L-shaped configuration enables the connecting member  30  to fit with and hang on the side rail  10 , so as to prevent the connecting member  30  from moving relative to the side rail  10 . 
     In the sixth embodiment of the present invention, referring to  FIG. 14 - FIG. 16 , the difference from the fifth embodiment is that the aligning structure  37  is provided between the connecting member  30  and the side rail  10  to realize a quick alignment of the first hole  44  and the second hole  11 . The aligning structure  37  includes the protruding block  36  and the aligning hole  12 . The protruding block  36  is provided on the side of the tenth piece body  56  opposite to the second U-shaped groove  32 , and the aligning hole  12  is provided on the side rail  10  for matching with the protruding block  36  to realize the alignment. The protruding block  36  is provided adjacent to the first hole  44  but not overlapped with the first hole  44 . The protruding block  36  is in a cylindrical shape. When the protruding block  36  is engaged into the aligning hole  12 , the first hole  44  coincides with the second hole  11 , and the inserting member  40  can pass through the first hole  44  and the second hole  11 . 
     In the seventh embodiment of the present invention, referring to  FIG. 17 - FIG. 19 , the difference from the sixth embodiment is that the first hole  44  is overlapped with the protruding block  36 , and the aligning hole  12  is overlapped with the second hole  11 . The protruding block  36  and the aligning hole  12  each are in a polygon shape, and the polygon shape includes but not limited to rectangle, square, triangle, hexagon, and star shape. 
     The preferred embodiments of the present invention have been described by the foregoing description. As mentioned above, it should be understood that the present invention is not limited to the preferred embodiments disclosed herein and should not be construed as an exclusion from other embodiments. The present invention can be used in various other combinations, modifications, and environments, and can be modified within the scope of the present invention described herein based on the above teachings or technology or knowledge in the related field. The modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the scope of protection of the appended claims of the present invention.