Abstract:
A foldable bed frame comprising two symmetrically arranged unit bed frames is provided. The two unit bed frames are hinged to each other at their connection. A unit bed frame is further provided with a first plurality of support legs in hinge connection with the unit bed frame. The direction in which the plurality of first support legs fold is perpendicular to the direction in which the unit bed frame folds. Both the folding and unfolding of the foldable bed frame are very simple and convenient, and the volume after folding is small, which facilitates storage and transport.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    The present application claims priority to Chinese Application No. 201620691110.1, filed Jul. 4, 2016, the entire contents of which are hereby incorporated by reference herein for all purposes. 
       TECHNICAL FIELD 
       [0002]    The present disclosure relates to a bed frame, and in particular to a foldable bed frame. 
       BACKGROUND 
       [0003]    A foldable bed frame is designed according to the principle that is can be folded and unfolded in a variety of ways, which has advantages of convenient and practical use, and convenient storage, and is particularly suitable for outdoor recreation and recess. 
         [0004]    An existing foldable bed frame typically comprises a side support frame, a connection frame, a side frame and a middle frame. For example, Chinese patent no. 201420443185.9 discloses a foldable bed frame, which comprises a side support frame, a connection frame, a side frame and a middle frame, all positions where a transverse support is connected to a transverse connection bar are provided with a fixing and mounting part for the end surface of the transverse connection bar to be detachably snapped inside, the lower end of an inclined bar is movably hinged to a side vertical support, the upper end of the inclined bar is detachably connected to the transverse support, the middle frame is detachably connected to two middle vertical supports, and the side frame is detachably connected to the side vertical support. It is time-consuming and difficult to unfold and fold this foldable bed frame, which is not convenient in use, has a relatively large size after being folded, and is not convenient to store and transport. 
         [0005]    The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art. 
       SUMMARY 
       [0006]    To solve the above technical problems in the art, the object of the present disclosure is to provide a foldable bed frame. Both the folding and unfolding of the foldable bed frame are very simple and convenient, and the volume after folding is small, which facilitates storage and transport. 
         [0007]    The present disclosure is implemented through the following technical solution: a foldable bed frame, comprising two symmetrically arranged unit bed frames is provided. The two unit bed frames are hinged to each other at a connection. The unit bed frame is further provided with first support legs in hinge connection with the unit bed frame, and the direction in which the first support legs fold is perpendicular to the direction in which the unit bed frame folds. 
         [0008]    Preferably, the unit bed frame comprises a first bed frame body and a second bed frame body. The first bed frame body and the second bed frame body are hinged to each other. The first support legs are disposed on the first bed frame body. The first support legs are hinged to the first bed frame body. 
         [0009]    Preferably, the first support leg comprises a first support bar, a second support bar, connection pieces and an elastic piece. The connection pieces are symmetrically arranged on the left edge and the right edge of the inner side of the first bed frame body. The first support bar and the second support bar are each hinged to the connection pieces. One end of the elastic piece is connected to the connection piece. The other end thereof is connected to the support bar. A connection bar is further disposed between the first support bar and the second support bar. 
         [0010]    In some embodiments, the support bar is provided with a boss, the elastic piece is provided with a slide groove, and the boss can be snapped into the slide groove and slide inside the slide groove. 
         [0011]    In some embodiments, the elastic piece is provided with a boss, the support bar is provided with a slide groove, and the boss can be snapped into the slide groove and slide inside the slide groove. 
         [0012]    Preferably, when the support bar is folded, the top surface and the bottom surface of the support bar do not go beyond the top surface and the bottom surface of the first bed frame body. 
         [0013]    Compared with the prior art, the present utility model has the following advantages: the present utility model provides a foldable bed frame, which divides the bed frame into 4 parts that are horizontally symmetrical, and all folded support legs are retracted inside the bed frame, such that the overall folded bed frame takes up a small volume to facilitate storage and transport. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0014]      FIG. 1  is a schematic diagram of a foldable bed frame in accordance with a first embodiment of the present disclosure. 
           [0015]      FIG. 2  is a schematic diagram of the folding direction of support legs of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0016]      FIG. 3  is a schematic diagram of another implementation of support legs of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0017]      FIG. 4  is an enlarged view of Part A in  FIG. 1 . 
           [0018]      FIG. 5  is an enlarged view of Part B in  FIG. 3 . 
           [0019]      FIG. 6  is a schematic diagram of a folding step of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0020]      FIG. 7  is a schematic diagram of a folding step of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0021]      FIG. 8  is a schematic diagram of a folding step of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0022]      FIG. 9  is a schematic diagram of a folding step of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0023]      FIG. 10  is a schematic diagram of a folding step of the foldable bed frame in accordance with the first embodiment of the present disclosure. 
           [0024]      FIG. 11  is a schematic diagram of a foldable bed frame in accordance with a second embodiment of the present disclosure. 
           [0025]      FIG. 12  is a schematic diagram of the folding direction of support legs of the foldable bed frame in accordance with the second embodiment of the present disclosure. 
       
    
    
       [0026]    It should be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the present invention as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes will be determined in part by the particular intended application and use environment. 
         [0027]    In the figures, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. 
       DETAILED DESCRIPTION 
       [0028]    Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawing and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that the present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is/are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the present invention as defined by the appended claims. 
         [0029]    It will also be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first subject could be termed a second subject, and, similarly, a second subject could be termed a first subject, without departing from the scope of the present disclosure. The first subject and the second subject are both subjects, but they are not the same subject. Furthermore, the terms “subject” and “user” are used interchangeably herein. 
         [0030]    The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “comprises” and or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
         [0031]    As used herein, the term “if” may be construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” may be construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context. 
         [0032]    In the description of details below, part legends will be marked in the accompanying drawings and become a part thereof, and moreover, they will be presented through description of a specific example capable of implementing said embodiment. This type of embodiment will provide sufficient details such that those skilled in the art will be able to implement the same. Readers must understand that other embodiments may also be used in the present utility model, or structural, logical and electrical changes may be made without departing from the embodiments. Therefore, the detailed description below may not be construed as a limitation. On the contrary, embodiments comprised therein shall be defined by the claims. 
       Embodiment 1 
       [0033]    As shown in  FIG. 1  and  FIG. 2 , a foldable bed frame comprises two unit bed frames  10  arranged horizontally. The two unit bed frames are hinged to each other at their connection. As illustrated in  FIG. 1 , each unit bed frame  10  comprises a first bed frame body  100  and a second bed frame body  110 . The first bed frame body  100  and the second bed frame body  110  are hinged to each other. Also, first support legs  20  are disposed on the first bed frame body. These first support legs  20  are hinged to the first bed frame body  100 . Referring to  FIG. 2 , the first support legs  20  can be folded toward respective front and back directions. 
         [0034]    Referring to  FIG. 1  to  FIG. 5 , the first support leg  20  comprises a first support bar  200 , a second support bar  202 , connection pieces  210  and an elastic piece  220 . The connection pieces  210  are symmetrically arranged on the left edge and the right edge of the inner side of the first bed frame body  100 . The first support bar  200  and the second support bar  202  are each hinged to these two connection pieces  210 . One end of the elastic piece  220  is connected to the connection piece  210 , and the other end thereof is connected to the support bar  200 . A connection bar  204  is further disposed between the first support bar  200  and the second support bar  202 . 
         [0035]    Referring to  FIG. 4 , the support bar  200  is provided with a boss  202 A, the elastic piece  220  is provided with a slide groove  222 A, and the boss  202 A can be snapped into the slide groove  222 A and slide inside the slide groove  222 A. When the support bar  200  is unfolded, the boss  202 A is snapped into the groove at one end of the slide groove  222 A, such that the support bar  200 , the elastic piece  220 , and the connection piece  210  are fixed as a triangle, and the support bar will not shake, thereby ensuring the stability of the foldable bed frame. 
         [0036]    Referring to  FIG. 5 , the elastic piece  220  is provided with a boss  202 B, the support bar  200  is provided with a slide groove  222 B, and the boss  202 B can be snapped into the slide groove  222 B and slide inside the slide groove. When the support bar  200  is unfolded, the boss is snapped into the groove at one end of the slide groove, such that the support bar  200 , the elastic piece  220 , and the connection piece  210  are fixed as a triangle, and the support bar will not shake, thereby ensuring the stability of the foldable bed frame. 
         [0037]    Referring to  FIG. 1  to  FIG. 10 , when the support bar  200  is folded, the top surface and the bottom surface of the support bar do not go beyond the top surface and the bottom surface of the first bed frame body, namely the width L 1  of the support bar  200  is smaller than or equal to the height L 2  of the first reference side frame. 
       Embodiment 2 
       [0038]    Referring to  FIG. 1  to  FIG. 10 , the foldable bed frame divides the bed frame into 4 parts that are horizontally symmetrical, and all folded support legs are retracted inside the bed frame, such that the overall folded bed frame takes up a small volume to facilitate storage and transport. 
         [0039]    Referring to  FIG. 11  to  FIG. 12 , the difference between Embodiment 2 and Embodiment 1 lies in that the foldable bed frame in Embodiment 1 has 4 bed frame bodies after being folded, while the foldable bed frame in Embodiment 2 has only 2 bed frame bodies after being folded, the folding steps for Embodiment 1 can be found in  FIG. 1  to  FIG. 10 , while the folding steps for Embodiment 2 are just as follows: the first support legs  20  are folded, and then the two unit bed frames  10  are folded over to complete the folding. 
         [0040]    The description above only lists embodiments of the present utility model, which are not used to limit the scope of the present utility model. Equivalent substitutions, such as variations and modifications, made by those skilled in the art without departing from the spirit and scope of the present utility model shall be encompassed by the scope of the present utility model.