Patent Publication Number: US-2022225758-A1

Title: Adjustable desk easy to disassemble

Description:
BACKGROUND OF THE INVENTION 
     1. Technical Field 
     The invention belongs to the technical field of adjustable office desks, and relates to an adjustable desk, in particular to an adjustable desk easy to disassemble. 
     2. Description of Related Art 
     Electric adjustable desks can be used by people of different heights because of their adjustable height, and typically comprise a crossbeam, and desk legs and brackets connected to two ends of the crossbeam, wherein the desk legs are detachably connected to the crossbeam, and the brackets are also detachably connected to the crossbeam. When the adjustable desk is to be assembled, the components are assembled on the crossbeam one by one. When the adjustable desk is to be disassembled, the components are disassembled from the crossbeam one-by-one. So, the operation steps are complicated, and it takes a long time to assemble and disassemble the adjustable desk. 
     BRIEF SUMMARY OF THE INVENTION 
     The objective of the invention is to solve the above-mentioned problems of the prior art by providing an adjustable desk easy to disassemble to improve the disassembly efficiency of the adjustable desk. 
     The objective of the invention is realized through the following technical solution: 
     an adjustable desk easy to disassemble, comprising: 
     a crossbeam used as a bearing structure of an adjustable desk; 
     two desk legs disposed at two ends of the crossbeam, pivotably connected to the crossbeam and used to stabilize relative positions of the desk legs and the crossbeam through first locking parts; and 
     two brackets disposed at the two ends of the crossbeam, and fixed to the crossbeam through second locking parts, wherein when the adjustable desk needs to be assembled or disassembled, the first locking parts and the second locking parts are removed to allow the two desk legs to rotate towards or opposite to each other to complete assembly or disassembly of the adjustable desk. 
     According to an adjustable desk easy to disassemble, the two desk legs are cross-stacked in an initial state. 
     According to an adjustable desk easy to disassemble, the first locking parts overlap with the second locking parts after the adjustable desk is assembled. 
     According to an adjustable desk easy to disassemble, first locking holes are formed in the crossbeam, second locking holes are formed in the brackets, and screws are screwed on the desk legs; the first locking holes are matched with the screws to form the first locking parts between the crossbeam and the desk legs, and the second locking holes are matched with the screws to form the second locking parts between the brackets and the crossbeam. 
     According to an adjustable desk easy to disassemble, an end of each said first locking hole and an end of each said second locking hole are open, and another end of each said first locking hole and another end of each said locking hole are closed; and after the adjustable desk is assembled, the first locking holes and the second locking holes are open towards the desk legs. 
     According to an adjustable desk easy to disassemble, corners of the crossbeam are wrapped in the brackets and the second locking holes are farther away from the desk legs than the first locking holes and are counter bores. 
     According to an adjustable desk easy to disassemble, each said bracket comprises a horizontal plate and a vertical plate the horizontal plates are inserted into and matched with the crossbeam, and the second locking holes are located in the vertical plates. 
     According to an adjustable desk easy to disassemble, insertion plates are mounted on the horizontal plates, guide slots are formed in the crossbeam, and the insertion plates are inserted into the guide slots to enable the brackets to be inserted into and matched with the crossbeam. 
     According to an adjustable desk easy to disassemble, notches allowing the horizontal plates to be mounted therein are formed in openings of the guide slots. 
     According to an adjustable desk easy to disassemble, connecting plates are disposed at the two ends of the crossbeam, a side of each said connecting plate is provided with a guide surface and is connected to the corresponding slot, and another side of each said connecting plate is formed with one said first locking hole; and after the insertion plates are inserted into the guide slots along the guide surfaces, the horizontal plates are flush with a surface, away from the desk legs, of the crossbeam. 
     According to an adjustable desk easy to disassemble, a mounting cavity is formed in the crossbeam in a lengthwise direction, and the two desk legs are rotatably connected to two ends of the mounting cavity, respectively. 
     According to an adjustable desk easy to disassemble, a motor housing which is embedded in the mounting cavity and rotatably connected to a cavity wall of the mounting cavity is disposed at an end of each said desk leg; and the motor housings are connected to the cavity wall of the mounting cavity through pins, and the screws are mounted on the motor housings. 
     According to an adjustable desk easy to disassemble, adjusting holes corresponding to the pins in position are formed in the crossbeam. 
     According to an adjustable desk easy to disassemble, the crossbeam comprises a plurality of telescopic tubes, each of which is formed by bending a metal sheet, and every two adjacent said telescopic tubes are detachably connected. 
     According to an adjustable desk easy to disassemble, a reinforcing plate is disposed at the joint of two connected telescopic tubes, wherein a closed end of the reinforcing plate is flush with a plane where a horizontal plate is located. 
     Compared with the prior art, the invention has the following beneficial effects: 
     (1) According to the adjustable desk easy to disassemble of the invention, the adjustable desk can be easily assembled and disassembled by rotating two desk legs towards or opposite to each other by means of first locking parts and second locking parts, and the assembly and disassembly efficiency of the adjustable desk is improved. 
     (2) Screws between a crossbeam and the desk legs are shared by brackets and the crossbeam, so that fixing positions between the crossbeam and the desk legs overlap with fixing positions between the brackets and the crossbeam; and the crossbeam, the desk legs and the brackets can be fixed and disassembled synchronously by rotating the screws, so that the disassembly efficiency of the adjustable desk is further improved. 
     (3) First locking holes and second locking holes are of the semi-open structure, so that when the desk legs are unfolded or folded, the screws screwed on the desk legs can be synchronously clamped into or slid out of the first locking holes and the second locking holes along with the rotation of the desk legs, and thus, the crossbeam and the desk legs can be connected easily, and the brackets and the crossbeam can be connected easily. Moreover, both the first locking holes and the second locking holes are open towards the desk legs after the adjustable desk is assembled, and the screws are clamped in and matched with the closed ends of the first locking holes and the closed ends of the second locking holes after the adjustable desk is assembled, so the bearing capacity of the adjustable desk is further improved. 
     (4) The corners of the crossbeam are wrapped in the brackets, so that both ends and the corners of the crossbeam are protected; in addition, the second locking holes are counter bores, so that the end faces of the screws are flush with the surfaces of the brackets when the screws are tightened, and thus, the appearance of the lifting desk is improved. 
     (5) Horizontal plates are inserted into and matched with the crossbeam, so that the brackets are accurately positioned when connected to the crossbeam, it is ensured that the second locking holes are coaxial with the first locking holes, the screws can be synchronously clamped into or slid out of the first locking holes and the second locking holes, the crossbeam, the desk legs and the brackets can be fixed and disassembled rapidly, and thus, the assembly and disassembly efficiency of the adjustable desk is further improved. 
     (6) The brackets can be horizontally pushed to insert insertion plates into guide slots through the guide surfaces, so that the connection firmness between the brackets and the crossbeam is guaranteed. In addition, connecting plates are arranged, so that it is ensured that horizontal plates are flush with the crossbeam when the insertion plates are inserted into the guide slots, in this way, the contact area of a desk board with the brackets and the crossbeam is enlarged, the bearing capacity of the whole adjustable desk is improved, and the levelness of the adjustable desk is guaranteed after installation. 
     (7) The crossbeam is divided into a plurality of telescopic tubes, so that the manufacturing process and manufacturing cost of the crossbeam are reduced; and on the other hand, the length of the crossbeam can be adjusted to adjust the dimensions of the adjustable desk, so that users can select the dimensions of the desk according to personnel requirements. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         FIG. 1  is a structural view of an adjustable desk easy to disassemble according to the invention in an unfolded state. 
         FIG. 2  is an enlarged structural view of part A in  FIG. 1 . 
         FIG. 3  is a structural view from another perspective view of the adjustable desk easy to disassemble according to the invention in an unfolded state. 
         FIG. 4  is an enlarged structural view of part B in  FIG. 3 . 
         FIG. 5  is a structural view of a bracket in a preferred embodiment of the invention. 
         FIG. 6  is a structural view of a crossbeam in a preferred embodiment of the invention. 
         FIG. 7  is a partially exploded view of an adjustable desk easy to disassemble of the present invention in an initial state. 
     
    
    
     In the figures:  100 , crossbeam;  110 , first locking hole;  120 , guide slot;  130 , mounting cavity;  140 , pin;  150 , adjusting hole;  160 , telescopic tube;  170 , connecting plate;  171 , guide surface;  180 , notch;  190 , reinforcing plate;  200 , desk leg;  210 , screw;  220 , motor housing;  300 , bracket;  310 , second locking hole;  320 , horizontal plate;  330 , vertical plate;  340 , insertion plate. 
     DETAILED DESCRIPTION OF THE INVENTION 
     The technical solution of the invention will be further described below in conjunction with the specific embodiments and accompanying drawings of the invention. However, the invention is not limited to these embodiments. 
     It should be noted that all directional indications (such as “above” “upper”, “lower”, “left”, “right”, “front” and “back”) in the embodiments of the invention are merely used to explain relative positional relations and motions of elements at a specific pose (as shown in the figures). If the specific pose changes, the directional indications will change accordingly. 
     As shown in  FIG. 1  to  FIG. 6 , the invention provides an adjustable desk easy to disassemble. The adjustable desk easy to disassemble comprises: a strip-shaped crossbeam  100  used as a bearing structure of the adjustable desk; two desk legs  200  disposed at two ends of the crossbeam  100 , pivotably connected to the crossbeam  100  and used to stabilize relative positions of the desk legs  200  and the crossbeam  100  through first locking parts; and two brackets  300  disposed at the two ends of the crossbeam  100 , located above the corresponding desk legs  200 , and fixed to the crossbeam  100  through second locking parts. When the adjustable desk needs to be disassembled, the first locking parts and the second locking parts are removed, and then the two desk legs  200  are rotated towards each other, so that the adjustable desk is stored. 
     According to the adjustable desk easy to disassemble of the invention, the adjustable desk can be easily assembled and disassembled by rotating the two desk legs  200  towards or opposite to each other by means of the first locking parts and the second locking parts, and the assembly and disassembly efficiency of the adjustable desk is improved. 
     To further improve the disassembly efficiency of the adjustable desk, the first locking parts may overlap with the second locking parts. 
     Further preferably, first locking holes  110  are formed in the crossbeam  100 , second locking holes  310  are formed in the brackets  300 , and screws  210  are screwed on the desk legs  200 ; wherein, the first locking holes  110  are matched with the screws  210  to form the first locking parts between the crossbeam  100  and the desk legs  200 , and the second locking holes  310  are matched with the screws  210  to form the second locking parts between the brackets  300  and the crossbeam  100 . 
     In this embodiment, the screws  210  between the crossbeam  100  and the desk legs  200  are shared by the brackets  300  and the crossbeam  100 , so that fixing positions between the crossbeam  100  and the desk legs  200  overlap with fixing positions between the brackets  300  and the crossbeam  100 ; and the crossbeam  100 , the desk legs  200  and the brackets  300  can be fixed and disassembled synchronously by rotating the screws  210 , so that the disassembly efficiency of the adjustable desk is further improved. 
     Because of the small size of the screws  210 , the screws  210  may be lost if they are stored separately after being disassembled from the desk legs  200  when the adjustable desk is not used (in a folded state), so a better method for storing the screws  210  is to keep then screwed on the desk legs  200  all the time. However, if the screws  210  are always screwed on the desk legs  200 , the crossbeam  100  will be connected to the desk legs  200 ; or, when the brackets  300  are connected to the crossbeam  100 , the screws  210  need to be unscrewed at first and are then screwed on the desk legs  200  via the first locking holes  110  and the second locking holes  310 , which will take a long time; and when the adjustable desk is assembled and disassembled, the screws  210  have to be placed aside, which is not beneficial to assembly and disassembly. 
     So, to further improve the assembly and disassembly efficiency of the adjustable desk, the first locking holes  110  and the second locking holes  310  are of a semi-open structure, that is, one end of each first locking hole  110  and one end of each second locking hole  310  are closed, and the other end of each first locking hole  110  and the other end of each second locking hole  310  are open. Wherein, after the adjustable desk is assembled, both the first locking holes  110  and the second locking holes  310  are open toward the desk legs  200 . 
     In this embodiment, the first locking holes  110  and the second locking holes  310  are of the semi-open structure, so that when the desk legs  200  are unfolded or folded, the screws  210  screwed on the desk legs  200  can be synchronously clamped into or slid out of the first locking holes  110  and the second locking holes  310  along with the rotation of the desk legs  200 , and thus, the crossbeam  100  and the desk legs  200  can be connected easily, and the brackets  300  and the crossbeam  100  can be connected easily. 
     Moreover, both the first locking holes  110  and the second locking holes  310  are open towards the desk legs  200  after the adjustable desk is assembled, and the screws  210  are clamped in and matched with the closed ends of the first locking holes  110  and the closed ends of the second locking holes  310  after the adjustable desk is assembled, so the bearing capacity of the adjustable desk is further improved. 
     Preferably, corners of the crossbeam  100  are wrapped in the brackets  300 , wherein the second locking holes  310  are farther away from the desk legs  200  than the first locking holes  110 , and the second locking holes  310  are counter bores. 
     In this embodiment, the corners of the crossbeam  100  are wrapped in the brackets  300 , so that both ends and the corners of the crossbeam  100  are protected; in addition, the second locking holes  310  are counter bores, so that the end faces of the screws  210  are flush with the surfaces of the brackets  300  when the screws  210  are tightened, and thus, the appearance of the lifting desk is improved. 
     Further preferably, the brackets  300  are L-shaped and each comprise a horizontal plate  320  and a vertical plate  330 , wherein the horizontal plates  320  are inserted into and matched with the crossbeam  100 , and the second locking holes  310  are located in the vertical plates  330 . 
     In this embodiment, the horizontal plates  320  are inserted into and matched with the crossbeam  100 , so that the brackets  300  are accurately positioned when connected to the crossbeam  100 , it is ensured that the second locking holes  310  are coaxial with the first locking holes  110 , the screws  210  can be synchronously clamped into or slid out of the first locking holes  110  and the second locking holes  310 , the crossbeam  100 , the desk legs  200  and the brackets  300  can be fixed and disassembled rapidly, and thus, the assembly and disassembly efficiency of the adjustable desk is further improved. 
     Further preferably, insertion plates  340  are mounted on the horizontal plates  320 , and guide slots  120  are formed in the crossbeam  100 , wherein the insertion plates  340  are inserted into the guide slots  120  to enable the brackets  300  to be inserted into and matched with the crossbeam  100 . 
     In this embodiment, the insertion plates  340  are mounted on the horizontal plates  320 , so that the thickness of the horizontal plates  320  is increased, it is ensured that the horizontal plates  320  of the brackets  300  are located on the same plane as the crossbeam  100  after the brackets  300  are connected to the crossbeam  100 , in this way, the contact area of a desk board with the brackets  300  and the crossbeam  100  is enlarged, and the bearing capacity of the whole adjustable desk is improved; in addition, to guarantee the levelness of the adjustable desk after installation, notches  180  are formed in openings of the guide slots  120  of the crossbeam  100  to allow the horizontal plates  320  of the brackets  300  to be mounted therein. 
     Preferably, the crossbeam  100  is a frame structure formed by bending a metal sheet, and a mounting cavity  130  is formed in the crossbeam  100  in a lengthwise direction of the crossbeam  100 ; wherein, the two desk legs  200  are mounted at two ends of the mounting cavity  130  respectively to be inserted into and matched with the crossbeam  100 , and thus, the degree of freedom of the desk legs  200  in the vertical direction of the horizontal plane is limited. 
     Further preferably, a motor housing  220  which is embedded in the mounting cavity  130  and is rotatably connected to a cavity wall of the mounting cavity  130  is disposed at one end of each desk leg  200  and is connected to the cavity wall of the mounting cavity  130  through a pin  140 , and the screws  210  are mounted on the motor housings  220 . One the one hand, the two desk legs  200  can be rotated towards or opposite to each other through the pins  140 ; and on the other hand, the degree of freedom of the desk legs  200  in the horizontal direction of the horizontal plane is limited by the pins  140 . 
     Further preferably, to allow the tightness of the motor housings  220  and the crossbeam  100  to be adjusted easily to avoid the situation where the desk legs  200  rotate when the adjustable desk is assembled or disassembled due to the fact that the pins  140  are too tight or the situation where the motor housings  220  shake in the mounting cavity  130  due to the fact that the pins  140  are too loose, adjusting holes  150  are formed in the crossbeam  100  and correspond to the pins  140  in position, so that users can rotate the pins  140  correspondingly through the adjusting holes  150  to adjust the tightness of the motor housings  220  and the crossbeam  100 . 
     Preferably, because of the large horizontal span of the crossbeam  100 , if the crossbeam  100  is integrally formed by bending, the manufacturing difficulty of the crossbeam  100  will be increased, and the manufacturing cost of the crossbeam  100  will be increased. In view of this, the crossbeam  100  is divided into a plurality of telescopic tubes  160 , each of which is formed by bending a metal sheet, wherein every two adjacent telescopic tubes  160  are detachably connected. By dividing the crossbeam  100  into a plurality of telescopic tubes  160 , the manufacturing process and manufacturing cost of the crossbeam  100  are reduced; and on the other hand, the length of the crossbeam  100  can be adjusted to adjust the dimensions of the adjustable desk, so that users can select the dimensions of the desk according to personnel requirements. 
     Further preferably, connecting plates  170  are mounted at the ends, close to the motor housings  220 , of the telescopic tubes  160  and are of an L-shaped structure, wherein one side of each connecting plate  170  is provided with a guide surface  171  and is connected to the corresponding notch  180 , and the first locking holes  110  are located in the other side of the connecting plates  170 . 
     In this embodiment, the brackets  300  can be horizontally pushed to insert the insertion plates  340  into the guide slots  120  through the guide surfaces  171 , so that the connection firmness between the brackets  300  and the crossbeam  100  is guaranteed. 
     The crossbeam  100  is divided into a plurality of telescopic tubes  160  and every two adjacent telescopic tubes  160  are detachably connected, so that the strength of the crossbeam  100  is reduced to some extent. In order to improve the strength of the crossbeam  100  to prevent the middle of the crossbeam  100  from bending, a reinforcing plate  190  is mounted at the joint of every two adjacent telescopic tubes  160  and is of a U-shaped structure, wherein closed ends of the reinforcing plates  190  are flush with the horizontal plates  320 . 
     The operating principle of the adjustable desk easy to disassemble of the invention is as follows: in general conditions, the motor housings  220  in the desk legs  200  are always rotatably connected to the crossbeam  100 , so the two desk legs  200  at the two ends of the crossbeam  100  are cross-stacked in an initial state; when the adjustable desk needs to be assembled, the crossbeam  100  is turned to face downwards at first, and the two cross-stacked desk legs  200  face upwards; then, the users pull one desk leg  200  to enable the desk leg  200  to rotate around the pin  140 , and when the desk leg  200  is rotated by a certain angle and the screw  210  on the motor housing  220  has not been clamped in the first locking hole  110  in the crossbeam  100 , the insertion plate  340  on the bracket  300  is inserted into the guide slot  120  along the connecting plate  170 , and at this moment, the second locking hole  310  in the bracket  300  is coaxial with the first locking hole  110 ; the desk leg  200  is further rotated to enable the screw  210  to be synchronously clamped in the first locking hole  110  and the second locking hole  310 , and finally, the screw  210  is rotated with a tool to fixedly connect the crossbeam  100 , the desk leg  200  and the bracket  300 ; and finally, the adjustable desk is assembled. 
     It should be noted that descriptive terms such as “first” and “second” involved in the invention are only used for the purpose of description and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Thus, a feature defined by “first” or “second” may explicitly or implicitly refer to the inclusion of at least one said feature. Unless otherwise clearly and specifically defined, “a plurality of” in the description of the invention refers to at least two, such as two or three. Unless otherwise clearly defined, terms such as “connect” and “fix” should be broadly understood. For example, “fix” may refer to fixed connection, detachable connection or integrated connection, or mechanical connection or electrical connection, or direct connection or indirect connection via an intermediate medium, or internal communication or interaction of two elements. Those ordinarily skilled in the art can appreciate the specific meanings of these terms in the invention as the case may be. 
     In addition, the technical solutions of the embodiments of the invention can be combined as long as the combinations can be realized by those ordinarily skilled in the art. When the combinations of the technical solutions conflict or cannot be realized, these combinations should be regarded as not existing and are not within the protection scope of the invention. 
     The specific embodiments described in the specification are merely illustrative ones for explaining the spirit of the invention. Those skilled in the art can make different amendments, supplements, or similar substitutions to these specific embodiments without departing from the spirit or going beyond the scope defined by the appended claims.