A joint for fixing rib rods

Abstract

This utility model relates to the field of bed frame technology, specifically to a connector for fixing rib rods, comprising a connector body, wherein the connector body has a first connector groove and a second connector groove, the first connector groove and the second connector groove are arranged side by side, and the orientation of the opening of the first connector groove is opposite to the orientation of the opening of the second connector groove; wherein, a fixing member is provided at the bottom of the connector body, and the fixing member has a snap-fit ​​protrusion. With the above technical solution, after the entire bed frame is installed, if the connector is damaged during use, the damaged connector can simply be pulled out of the bed frame and a new connector inserted, making the installation process simple and convenient, and facilitating bed frame maintenance.

Description

Technical Field

[0001] This utility model relates to the field of bed frame technology, specifically to a joint for fixing rib rods. Background Technology

[0002] A slatted bed frame is a component of modern bed furniture, serving a load-bearing function to support the mattress. Slatted bed frames are divided into two types based on materials: wooden bed frames and metal bed frames. Metal bed frames are more stable than wooden bed frames and are therefore more widely used.

[0003] For example, Chinese utility model patent CN219895184U discloses a fully foldable bed frame. The bed frame includes a foldable first folding crossbeam, a foldable second folding crossbeam located on a first side of the first folding crossbeam, a foldable third folding crossbeam located on a second side of the first folding crossbeam, a foldable first folding end frame located at a first end of the first folding crossbeam, and a foldable second folding end frame located at a second end of the first folding crossbeam. The two ends of the first folding crossbeam are detachably and fixedly connected to the middle of the first folding crossbeam and the middle of the second folding crossbeam, respectively. The two ends of the second folding crossbeam are detachably and fixedly connected to the first side of the first folding crossbeam and the first side of the second folding crossbeam, respectively. The two ends of the third folding crossbeam are detachably and fixedly connected to the second side of the first folding crossbeam and the second side of the second folding crossbeam, respectively. The bed frame also includes multiple first ribs detachably disposed between the first folding crossbeam and the second folding crossbeam, and multiple second ribs detachably disposed between the first folding crossbeam and the third folding crossbeam. The first and second crossbeams are fixedly provided with a plurality of first brackets for supporting one end of the first rib strip on their first side, and the third and fourth crossbeams are fixedly provided with a plurality of second brackets for supporting the other end of the first rib strip on their second side; the first and second crossbeams are fixedly provided with a plurality of third brackets for supporting one end of the second rib strip on their second side, and the fifth and sixth crossbeams are fixedly provided with a plurality of fourth brackets for supporting the other end of the second rib strip on their first side.

[0004] However, the above-mentioned bed frame has the following shortcomings: The bed frame supports one end of the first row of ribs by fixing a first bracket on the first side of the first and second crossbeams. In the actual manufacturing process, the first bracket often needs to be welded on. During use, if the weld between the first bracket and the first crossbeam or the weld between the first bracket and the second crossbeam fails, the first row of ribs supported on the first bracket will directly lose its support, affecting normal use. If normal use is to be restored, it needs to be re-welded. However, most households do not have welding tools, which makes the maintenance of the bed frame relatively troublesome.

[0005] In view of this, the applicant has conducted in-depth research on the above-mentioned issues, which led to this case. Utility Model Content

[0006] The purpose of this invention is to provide a joint that facilitates bed frame maintenance.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A splice for fixing a rib rod includes a splice body, on which a first splice groove and a second splice groove are formed. The first splice groove and the second splice groove are arranged side by side, and the orientation of the opening of the first splice groove is opposite to the orientation of the opening of the second splice groove. The bottom of the splice body is further provided with a fixing member, on which a snap-fit ​​protrusion is formed.

[0009] Preferably, a first reinforcing wall is provided on the outer side wall of the lap joint body, the first reinforcing wall being adjacent to the first joint groove and away from the second joint groove; and / or a second reinforcing wall is provided on the outer side wall of the lap joint body, the second reinforcing wall being adjacent to the second joint groove and away from the first joint groove.

[0010] Preferably, the thickness of the first reinforcing wall gradually decreases from one end near the bottom of the lap joint body to the other end; and / or, the thickness of the second reinforcing wall gradually decreases from one end near the bottom of the lap joint body to the other end.

[0011] Preferably, the first reinforcing wall is provided with a first stiffening strip, the first end of the first stiffening strip being close to the bottom of the lap joint body, and the arrangement direction of the first end of the first stiffening strip towards the second end being along a direction away from the bottom of the lap joint body; and / or, the second reinforcing wall is provided with a second stiffening strip, the first end of the second stiffening strip being close to the bottom of the lap joint body, and the arrangement direction of the first end of the second stiffening strip towards the second end being along a direction away from the bottom of the lap joint body.

[0012] Preferably, the cross-section of the first stiffening strip is semi-circular; and / or the cross-section of the second stiffening strip is semi-circular.

[0013] Preferably, the fastener is a plastic fastener.

[0014] Preferably, there are two fasteners, one of which is arranged corresponding to the first connector groove, and the other of which is arranged corresponding to the second connector groove.

[0015] Preferably, the fastener includes a first elastic piece and a second elastic piece. One end of the first elastic piece is connected to the body of the joint, and the other end of the first elastic piece is configured as the snap-fit ​​protrusion. One end of the second elastic piece is connected to the body of the joint, and the other end of the second elastic piece is configured as the snap-fit ​​protrusion. The first elastic piece and the second elastic piece are arranged opposite to each other, and a clearance space is formed between the first elastic piece and the second elastic piece.

[0016] Preferably, a reinforcing section is further provided between the first elastic sheet and the second elastic sheet, one end of the reinforcing section being fixedly connected to the snap-fit ​​protrusion on the first elastic sheet, and the other end of the reinforcing section being fixedly connected to the snap-fit ​​protrusion on the second elastic sheet.

[0017] Preferably, the first elastic sheet is integrally connected to the reinforcing segment, and the second elastic sheet is integrally connected to the reinforcing segment.

[0018] The beneficial effects of adopting the above technical solution are as follows: by opening the first joint groove and the second joint groove on the joint body, and setting the fixing component at the bottom of the joint body, the fixing component is inserted and fixed on the bed frame during installation, and then the rib rods are fixed on the first joint groove and the second joint groove respectively; after the entire bed frame is installed, if the joint is damaged during use, the damaged joint can be simply pulled out from the bed frame and a new joint can be inserted. The installation process is simple and convenient, and it is easy to maintain the bed frame.

[0019] To elaborate further, the clearance space is provided to facilitate installation. During the insertion process, the clearance space provides deformation space for the first and second elastic sheets.

[0020] Furthermore, by setting up a reinforcing section, the first and second elastic plates are made into a whole, which helps to improve the rigidity of the fastener and thus helps to prevent the fastener from detaching from the snap-fit ​​mounting hole during normal use.

[0021] Furthermore, by setting the first reinforcing wall and the second reinforcing wall, it is beneficial to improve the rigidity of the lap joint body, thereby improving the stress performance of the first joint groove and the second joint groove. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the bed frame structure of this utility model (the first connecting cap and the third connecting cap are omitted in the figure).

[0023] Figure 2 This is a partially exploded structural diagram of the bed frame of this utility model at the overlapping joint position;

[0024] Figure 3This is a partially exploded structural diagram of the bed frame of this utility model at the first joint position;

[0025] Figure 4 This is a schematic diagram of the lap joint of this utility model;

[0026] Figure 5 This is a structural schematic diagram of the lap joint of this utility model from another perspective;

[0027] Figure 6 This is a schematic diagram of the structure of the connector of this utility model;

[0028] Figure 7 This is a structural schematic diagram of the first reinforcing connector of this utility model;

[0029] Figure 8 This is a structural schematic diagram of the second reinforcing connector of this utility model;

[0030] Figure 9 This is a structural schematic diagram of the third reinforcing connector of this utility model;

[0031] Figure 10 This is a schematic diagram of the structure of the first limiting member of this utility model.

[0032] In the picture:

[0033] 10 - First square tube; 12 - First lap plate;

[0034] 13-First limiting component; 13a-Matching connecting plate;

[0035] 13b - Stop plate;

[0036] 20 - Second square tube; 21 - Overlap joint;

[0037] 23-First joint groove; 231-First reinforcing wall;

[0038] 24-Second joint groove; 241-Second reinforcing wall;

[0039] 25 - First stiffening strip; 26 - Second stiffening strip;

[0040] 27-Fixed component; 271-First elastic sheet;

[0041] 272 - Second elastic sheet; 273 - Reinforcing section;

[0042] 28-Snap-fit ​​Protrusion;

[0043] 29 - Make room for improvement;

[0044] 30 - Third-party tube; 33 - Third limiting component;

[0045] 40 - First end frame; 41 - First L-shaped frame;

[0046] 42-Second L-shaped frame; 43-Reinforcing foot;

[0047] 44 - Second limiting component;

[0048] 50 - Second end frame;

[0049] 60 - First rib rod; 61 - First connecting cap;

[0050] 62 - Second connecting cap;

[0051] 70 - Second row of ribs; 71 - Third connecting cap;

[0052] 72-Fourth connecting cap;

[0053] 80-Reinforced foot; 81-First reinforcing beam;

[0054] 82 - Second reinforcing beam;

[0055] 90 - Connector; 91 - First connecting plate;

[0056] 92 - Second connecting plate; 93 - Third connecting plate;

[0057] 94 - Fourth connecting plate;

[0058] 110 - First reinforcing connector; 111 - First reinforcing plate;

[0059] 112 - Second reinforcing plate; 113 - Third reinforcing plate;

[0060] 114 - First Reinforcing Plate Sub-plate;

[0061] 120 - Second reinforcing connector; 121 - Fourth reinforcing plate;

[0062] 122 - Fifth reinforcing plate; 123 - Sixth reinforcing plate;

[0063] 130 - Third reinforcing connector; 131 - Seventh reinforcing plate;

[0064] 132 - Eighth reinforcing plate; 133 - Ninth reinforcing plate;

[0065] 134 - Second reinforcing plate sub-plate. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0067] like Figures 1-10 As shown, this embodiment provides a bed frame, including a bed frame body, which includes a first square tube 10, a second square tube 20, a first end frame 40, a second end frame 50 arranged side by side with the first end frame 40, and multiple first row of bone rods 60. The first square tube 10 and the second square tube 20 are arranged side by side.

[0068] The first square tube 10 and the second square tube 20 are both hollow square tubes. The first square tube 10 and the second square tube 20 each have a first end and a second end. The first end of the first square tube 10 and the first end of the second square tube 20 are detachably connected together by the first end bracket 40. The second end of the first square tube 10 and the second end of the second square tube 20 are detachably connected together by the second end bracket 50.

[0069] For ease of description, the orientation of the bed frame body during normal use is taken as the reference direction of this utility model, and the width direction of the bed frame body is taken as the transverse direction, and the length direction of the bed frame body is taken as the longitudinal direction.

[0070] The first end frame 40 and the second end frame 40 have the same structure, so the first end frame 40 will be used as an example for explanation.

[0071] The first end frame 40 includes a first L-shaped frame 41 and a second L-shaped frame 42. The first L-shaped frame 41 includes a first crossbeam and a first bed leg. Each of the second L-shaped frames includes a second crossbeam and a second bed leg. Both the first and second crossbeams have a first end and a second end, and are aligned on the same straight line. The first end of the first crossbeam is detachably connected to the first end of the second crossbeam. The first bed leg is vertically arranged, and its upper end is fixedly installed at the second end of the first crossbeam. The second bed leg is also vertically arranged, and its upper end is fixedly installed at the second end of the second crossbeam, resulting in the first end frame 40 having an overall U-shape with an opening facing downwards. Preferably, the first bed leg and the first crossbeam are integrally connected, and the second bed leg and the second crossbeam are also integrally connected. It should be noted that the first bed leg and the first crossbeam can also be welded together, and the second bed leg and the second crossbeam can also be welded together.

[0072] Furthermore, the detachable connection structure of the first and second crossbeams is as follows: the first and second crossbeams are respectively installed together by connectors 90, which include a first connecting plate 91 and a second connecting plate 92 arranged opposite to each other; the first end face of the first crossbeam and the first end face of the second crossbeam are close to or in close contact with each other; the first crossbeam has a longitudinally arranged first through hole, and the second crossbeam has a longitudinally arranged second through hole. The first connecting plate 91 is located on the side of the first end frame 40 facing the second end frame 50, and the second connecting plate 92 is located on the side of the first end frame 40 away from the second end frame 50. The first connecting plate 91 has a first matching hole at the position corresponding to the first through hole, and a second matching hole at the position corresponding to the second through hole; the second connecting plate 92 has a first mating hole at the position corresponding to the first through hole, and a second mating hole at the position corresponding to the second through hole. The first through hole, the first matching hole, and the first mating hole are on the same straight line, and all three are fitted with the same bolt fixing assembly (not shown in the figure). Similarly, the second through hole, the second matching hole, and the second mating hole are on the same straight line, and all three are fitted with the same bolt fixing assembly (not shown in the figure). It should be noted that the bolt fixing assembly is a conventional structure, and the installation method of each bolt fixing assembly is also a conventional installation method, which will not be described in detail here.

[0073] Preferably, in order to improve the stress performance of the connection node between the first crossbeam and the second crossbeam, the connector 90 further includes a third connecting plate 93. The third connecting plate 93 is located below the connection position of the first crossbeam and the second crossbeam. The lower ends of the first connecting plate 91 and the second connecting plate 92 are respectively fixedly connected to the third connecting plate 93. In this embodiment, the third connecting plate 93 is integrally connected to the first connecting plate 91 and integrally connected to the second connecting plate 92.

[0074] The first end frame 40 and the second end frame 50 are arranged longitudinally at intervals, and the first connecting plate 91 adjacent to the second end frame 50 is located on the side of the second end frame 50 facing the first end frame 40, and the second connecting plate 92 adjacent to the second end frame 50 is located on the side of the second end frame 50 away from the first end frame 40.

[0075] For ease of explanation, in this embodiment, the first end frame 40 and the second end frame 50 are collectively referred to as end frames. In order to improve the stability of the two end frames, reinforcing feet 43 are respectively installed below the two connecting parts 90. In this embodiment, each reinforcing foot 43 is arranged vertically, and each reinforcing foot 43 is installed together with the third connecting plate 93 on the corresponding connecting part 90 in a conventional manner, such as by welding or bolting.

[0076] The first square tube 10 and the second square tube 20 are arranged sequentially at a distance along the lateral direction. The first end of the first square tube 10 is detachably and fixedly connected to the first L-shaped frame 41 of the first end bracket 40, and the second end of the first square tube 10 is detachably and fixedly connected to the first L-shaped frame 41 of the second end bracket 50. The first end of the second square tube 20 is detachably and fixedly connected to the first end bracket 40, and the second end of the second square tube 20 is detachably and fixedly connected to the second end bracket 50.

[0077] Multiple first overlapping interfaces are provided on the side of the first square tube 10 near the second square tube 20. Each first overlapping interface is arranged sequentially at intervals along the length of the first square tube 10. Each first overlapping interface is interconnected with the interior of the first square tube 10. Each first overlapping interface is connected to a first overlapping plate 12. Each first overlapping plate 12 is located inside the first square tube 10 and together with the corresponding first overlapping interface, forms a first connection position for installing the first rib rod 60. In other words, in this embodiment, each first overlapping plate 12 is arranged horizontally and is fixedly connected to the lower edge of the first overlapping interface of the first square tube 10. Preferably, each first overlapping plate 12 is integrally connected to the first square tube 10. Each first rib rod 60 has a first end and a second end. The first end of each first rib rod 60 is detachably connected to the second square tube 20, and the second end of each first rib rod 60 is installed on the first square tube 10.

[0078] In this embodiment, each first row of ribs 60 is paired with each first interlocking interface. The installation structure between the second end of each first row of ribs 60 and the first square tube 10 is the same. The installation structure between the second end of one of the first row of ribs 60 and the first square tube 10 is described as an example.

[0079] The installation structure between the second end of the first rib rod 60 and the first square tube 10 is as follows: the second end of the first rib rod 60 is inserted into the corresponding first lap joint, and the lower side of the second end of the first rib rod 60 abuts against the corresponding first lap plate 12. Since the first lap plate 12 is fixed at the lower edge of the first lap joint of the first square tube 10, the first rib rod 60 can be better fixed in the first lap joint under the action of gravity, thereby enabling the first rib rod 60 to be installed more stably at the first connection position.

[0080] To facilitate the installation of the first rib rod 60 into the first lap joint, a first extension opening is provided on the side of the first square tube 10 near the first lap joint. The first extension opening is interconnected with the interior of the first square tube 10. The first lap joint is located between the first extension opening and the first lap plate 12. Specifically, in this embodiment, the first extension opening is located directly above the first lap plate 12. The first extension opening and the first lap joint are interconnected in close proximity, forming an L-shaped first mounting opening together. Preferably, the first mounting opening is adapted to the second end of the first rib rod 60.

[0081] The bed frame body also includes a third-party tube 30 and multiple second-row bone rods 70. The third-party tube 30 is a hollow square tube with a first end and a second end. The third-party tube 30 and the second square tube 20 are arranged side by side, with the second square tube 20 located between the first square tube 10 and the third-party tube 30. The first end of the third-party tube 30 is detachably and fixedly connected to the second L-shaped frame 42 of the first end frame 40, and the second end of the third-party tube 30 is detachably and fixedly connected to the second L-shaped frame 42 of the second end frame 50.

[0082] The detachable connection structure between the first square tube 10 and the first L-shaped frame 41 of the first end frame 40, the detachable connection structure between the first square tube 10 and the first L-shaped frame 41 of the second end frame 50, the detachable connection structure between the third third tube 30 and the second L-shaped frame 42 of the first end frame 40, and the detachable connection structure between the third third tube 30 and the second L-shaped frame 42 of the second end frame 50 are the same. Therefore, the detachable connection structure between the first square tube 10 and the first L-shaped frame 41 of the first end frame 40 is used as an example for explanation.

[0083] The detachable connection structure between the first square tube 10 and the first L-shaped frame 41 of the first end bracket 40 can adopt a conventional detachable connection structure. For example, in this embodiment, the first end of the first square tube 10 is mounted on a first mounting plate by conventional methods such as welding. The first mounting plate and the first L-shaped frame 41 of the first end bracket 40 are fixed together by first mounting screws. Specifically, the first mounting plate and the first L-shaped frame 41 of the first end bracket 40 are respectively provided with corresponding first mounting holes. The first mounting hole on the first L-shaped frame 41 of the first end bracket 40 is located at the upper end of the first bed leg, and the first mounting hole on the first mounting plate is provided with internal threads. Thus, during installation, the first mounting screw passes through the first mounting hole of the first L-shaped frame 41 of the first end bracket 40 and is then screwed into the first mounting hole of the first mounting plate. Preferably, to ensure the stable installation of the first square tube 10 and the first L-shaped frame 41 of the first end bracket 40, there are two first mounting holes on both the first mounting plate and the first L-shaped frame 41.

[0084] The detachable connection structure between the second square tube 20 and the first end frame 40 and the detachable connection structure between the second square tube 20 and the second end frame 50 are the same. The detachable connection structure between the second square tube 20 and the first end frame 40 will be used as an example for explanation.

[0085] The aforementioned connector 90 also includes a fourth connecting plate 94, which is fixedly installed on the side of the first connecting plate 91 away from the second connecting plate 92. The fourth connecting plate 94 is in the shape of an upward-opening U-shape, thus forming an upward-opening U-shaped square tube mounting position.

[0086] In this embodiment, the second square tube 20 and the first end frame 40 are detachably mounted together via a fourth connecting plate 94 on the connector 90. Specifically, the first end of the second square tube 20 is mounted on the square tube mounting position in a conventional manner, for example, by fixing it with a second mounting screw. Specifically, the fourth connecting plate 94 and the first end of the second square tube 20 each have corresponding second mounting holes. The square tube mounting hole on the fourth connecting plate 94 of the connector 90 on the first end frame 40 has an internal thread. Thus, during installation, the second mounting screw passes through the second mounting hole on the second square tube 20 and is then screwed into the second mounting hole of the fourth connecting plate 94. It should be noted that the detachable connection structure between the second square tube 20 and the first end frame 40 can also adopt a conventional detachable connection structure.

[0087] The third-party tube 30 has multiple second overlapping interfaces on the side near the second square tube 20. These second overlapping interfaces are arranged sequentially at intervals along the length of the third-party tube 30, and each interface is interconnected with the interior of the third-party tube 30. Each second overlapping interface is connected to a second overlapping plate, which is located inside the third-party tube 30 and, together with the corresponding second overlapping interface, forms a second connection position for installing the second rib rod 70. In this embodiment, each second overlapping plate is horizontally arranged and fixedly connected to the lower edge of the second overlapping interface of the third-party tube 30. Preferably, each second overlapping plate is integrally connected to the third-party tube 30. Each second rib rod 70 has a first end and a second end. The first end of each second rib rod 70 is detachably connected to the second square tube 20, and the second end is installed on the third-party tube 30.

[0088] In this embodiment, each second row of ribs 70 is paired with each second interlocking interface. The installation structure between the second end of each second row of ribs 70 and the third-party tube 30 is the same. The installation structure between the second end of one of the second row of ribs 70 and the third-party tube 30 will be described as an example.

[0089] The installation structure between the second end of the second rib rod 70 and the third-party tube 30 is as follows: the second end of the second rib rod 70 is inserted into the corresponding second lap joint, and the lower side of the second end of the second rib rod 70 abuts against the corresponding second lap plate. Since the second lap plate is fixed at the lower edge of the second lap joint of the third-party tube 30, the third-party tube 30 can be better fixed in the second lap joint under the action of gravity, thereby enabling the third-party tube 30 to be installed more stably on the second connection position.

[0090] To facilitate the installation of the second rib rod 70 into the second lap joint, the third-party tube 30 has a second extension port on the side adjacent to the second lap joint. The second extension port is interconnected with the interior of the third-party tube 30. The second lap joint is located between the second extension port and the second lap plate, and the second extension port and the second lap plate are arranged opposite to each other. Specifically, in this embodiment, the second extension port is located directly above the second lap plate. The second extension port and the second lap joint are interconnected in close proximity, and the second extension port and the second lap joint together form an L-shaped second mounting opening. Preferably, the second mounting opening is adapted to the second end of the second rib rod 70.

[0091] This utility model also provides a splice connector 21 for mounting the first end of the first row of rib rods 60 and the first end of the second row of rib rods 70 onto the second square tube 20, respectively.

[0092] At least one of the aforementioned overlapping joints 21 is installed on the upper side of the second square tube 20. In this embodiment, the number of first overlapping joints and the number of second overlapping joints are the same as the number of overlapping joints 21. In this embodiment, ten overlapping joints 21 are used as an example for explanation. Each overlapping joint 21 is arranged at intervals along the length direction of the second square tube 20.

[0093] It should be noted that the installation structure of each joint 21 is the same, so one joint 21 is used as an example for explanation; the detachable connection structure between the first end of each first row of ribs 60 and the second square tube 20 is the same, so one detachable connection structure between the first end of each first row of ribs 60 and the second square tube 20 is used as an example for explanation; the detachable connection structure between the first end of each second row of ribs 70 and the second square tube 20 is the same, so one detachable connection structure between the first end of each second row of ribs 70 and the second square tube 20 is used as an example for explanation.

[0094] The detachable connection structure between the first end of the first row of ribs 60 and the second square tube 20, and the detachable connection structure between the first end of the second row of ribs 70 and the second square tube 20 are as follows: The lap joint 21 includes a lap joint body fixed to the second square tube 20. The lap joint body has a first joint groove 23 and a second joint groove 24. The first joint groove 23 is used to install the first row of ribs 60, and the second joint groove 24 is used to install the second row of ribs 70. The first joint groove 23 and the second joint groove 24 are arranged side-by-side longitudinally. The opening of the first joint groove 23 faces the first square tube 10, and the opening of the second joint groove 24 faces the third square tube 30; that is, the orientation of the opening of the first joint groove 23 and the opening of the second joint groove 24 are arranged in opposite directions.

[0095] The first connector groove 23 corresponds to one of the first interlocking interfaces, and the first end of the corresponding first rib rod 60 is inserted into the first connector groove 23; the second connector groove 24 corresponds to one of the second interlocking interfaces, and the first end of the corresponding second rib rod 70 is inserted into the second connector groove 24.

[0096] The fixing structure between the lap joint body and the second square tube 20 is as follows: a fixing member 27 is integrally connected to the bottom of the lap joint body, the upper end of the fixing member 27 is fixedly connected to the lap joint body, a snap-fit ​​protrusion 28 is formed on the fixing member 27, a snap-fit ​​mounting hole is opened on the upper side of the second square tube 20, the snap-fit ​​mounting hole is interconnected with the hollow cavity of the second square tube 20, and the fixing member 27 is inserted into the snap-fit ​​mounting hole; the fixing member 27 is a deformable fixing member, for example, the fixing member 27 can be a plastic fixing member; a clearance space 29 is formed on the fixing member 27 to allow the fixing member 27 to deform during the insertion process. During installation, when the snap-fit ​​protrusion 28 passes through the tube wall of the second square tube 20, it enters the second square tube 20 due to the action of the clearance space 29. When the snap-fit ​​protrusion 28 is completely inside the second square tube 20, the clearance space 29 resets, so that the snap-fit ​​protrusion 28 is snapped into the second square tube 20.

[0097] Preferably, the fastener 27 includes a first elastic piece 271 and a second elastic piece 272. The upper ends of the first elastic piece 271 and the second elastic piece 272 are integrally connected to the body of the lap joint. The first elastic piece 271 and the second elastic piece 272 are arranged opposite to each other, and the aforementioned clearance space 29 is formed between the first elastic piece 271 and the second elastic piece 272. The clearance space 29 is provided to facilitate installation. During the insertion process, the clearance space 29 provides elastic deformation space for the first elastic piece 271 and the second elastic piece 272. The lower ends of the first elastic plate 271 and the second elastic plate 272 are respectively configured as the aforementioned snap-fit ​​protrusions 28. The snap-fit ​​protrusions 28 on the first elastic plate 271 and the second elastic plate 272 together form a snap-fit ​​protrusion group. When the two snap-fit ​​protrusions 28 are closed together, the maximum outer diameter of the snap-fit ​​protrusion group is smaller than the diameter of the snap-fit ​​mounting hole, facilitating the passage of the snap-fit ​​protrusion group through the snap-fit ​​mounting hole. When the snap-fit ​​protrusion group is in its natural state, the maximum outer diameter of the snap-fit ​​protrusion group is larger than the diameter of the snap-fit ​​mounting hole, so that the fastener 27 snaps into the second square tube 20. The snap-fit ​​protrusions 28 on the first elastic plate 271 are located on the side of the first elastic plate 271 opposite to the second elastic plate 272, and the snap-fit ​​protrusions 28 on the second elastic plate 272 are located on the side of the second elastic plate 272 opposite to the first elastic plate 271. During installation, the snap-fit ​​protrusion 28 on the first elastic plate 271 and the snap-fit ​​protrusion 28 on the second elastic plate 272 deform towards the clearance space 29 under the action of external force, so that the snap-fit ​​protrusion assembly enters the second square tube through the snap-fit ​​mounting hole. Then, after the external force is withdrawn, the first elastic plate 271 and the second elastic plate 272 are reset, so that the snap-fit ​​protrusion assembly is snapped into the second square tube 20.

[0098] Furthermore, to improve the snap-fit ​​stability between the lap joint body and the second square tube 20, a reinforcing section 273 is provided between the first elastic piece 271 and the second elastic piece 272. One end of the reinforcing section 273 is fixedly connected to the lower end of the first elastic piece 271, and the other end of the reinforcing section 273 is fixedly connected to the lower end of the second elastic piece 272. Preferably, the first elastic piece 271 and the reinforcing section 273 are integrally connected, and the second elastic piece 272 and the reinforcing section 273 are integrally connected. By providing the reinforcing section 273, the first elastic piece 271 and the second elastic piece 272 form a whole, which helps to improve the rigidity of the fastener 27, thereby helping to prevent the fastener 27 from detaching from the snap-fit ​​mounting hole during normal use.

[0099] Furthermore, on one of the joints 21, there are two fasteners 27. One fastener 27 is arranged corresponding to the first joint groove 23, and the other fastener 27 is arranged corresponding to the second joint groove 24. Specifically, one fastener 27 is located directly below the first joint groove 23, and the other fastener 27 is located directly below the second joint groove 24. Obviously, the second square tube 20 also has two snap-fit ​​mounting holes for fixing the joint 21. The two snap-fit ​​mounting holes correspond one-to-one with the two fasteners 27, and each fastener 27 is inserted into the corresponding snap-fit ​​mounting hole. By setting two fasteners 27, it is helpful to prevent the joint 21 from rotating.

[0100] To facilitate the installation of the first row of ribs 60 and the second row of ribs 70, the first joint groove 23 has a first joint groove extension opening on the side away from the bottom of the joint body. The first joint groove extension opening is connected to the first joint groove, and the first joint groove extension opening is connected to the groove opening of the first joint groove, so that the first joint groove extension opening and the groove opening of the first joint groove together form an L-shaped joint groove installation opening; the second joint groove 24 has a second joint groove extension opening on the side away from the bottom of the joint body. The second joint groove extension opening is connected to the second joint groove, and the second joint groove extension opening is connected to the groove opening of the second joint groove, so that the second joint groove extension opening and the groove opening of the second joint groove together form an L-shaped joint groove installation opening.

[0101] Furthermore, to improve the load-bearing performance of the first joint groove 23 and the second joint groove 24, a first reinforcing wall 231 is provided on the outer wall of the lap joint body. The first reinforcing wall 231 is adjacent to the first joint groove 23 and away from the second joint groove 24. The wall thickness of the first reinforcing wall 231 gradually decreases from one end near the bottom of the lap joint body to the other end; in other words, the wall thickness of the first reinforcing wall 231 gradually decreases along the direction away from the second square tube 20. A second reinforcing wall 241 is provided on the outer wall of the lap joint body. The second reinforcing wall 241 is adjacent to the second joint groove 24 and away from the first joint groove 23. The wall thickness of the second reinforcing wall 241 gradually decreases from one end near the bottom of the lap joint body to the other end; in other words, the wall thickness of the second reinforcing wall 241 gradually decreases along the direction away from the second square tube 20.

[0102] Furthermore, a first stiffening strip 25 is provided on the first reinforcing wall 231. The first stiffening strip 25 has a first end and a second end. The first end of the first stiffening strip 25 is close to the bottom of the lap joint body. The direction of arrangement of the first end of the first stiffening strip 25 towards the second end is along a direction away from the bottom of the lap joint body. In other words, the first end of the first stiffening strip 25 is close to the second square tube 20. The direction of arrangement of the first end of the first stiffening strip 25 towards the second end is along a direction away from the second square tube 20. A second stiffening strip 26 is provided on the second reinforcing wall 241. The first stiffening strip 25 has a first end and a second end. The first end of the second stiffening strip 26 is close to the bottom of the lap joint body. The direction of arrangement of the first end of the second stiffening strip 26 towards the second end is along a direction away from the bottom of the lap joint body. In other words, the first end of the second stiffening strip 26 is close to the second square tube 20. The direction of arrangement of the first end of the second stiffening strip 26 towards the second end is along a direction away from the second square tube 20. As a preferred technical solution, the cross-section of the first stiffening bar 25 is semi-circular; the cross-section of the second stiffening bar 26 is semi-circular.

[0103] For ease of explanation, the first row of rib rods 60 and the second row of rib rods 70 are collectively referred to as rib rods.

[0104] After adopting the above technical solution, by opening the first joint groove 23 and the second joint groove 24 on the joint body, and setting the fixing member 27 at the bottom of the joint body, during installation, the fixing member 27 of the joint 21 is inserted into the corresponding snap-fit ​​mounting hole on the second square tube 20, and then the first end of the first rib rod 60 is installed into the first joint groove 23 of the joint 21 and the second end of the second rib rod 70 is installed into the second joint groove 24 of the joint 21, the rib rod can be fixed. After the entire bed frame is installed, if the joint 21 is damaged during use, the damaged joint 21 can be pulled out from the bed frame and a new joint 21 can be inserted. The installation process is simple and convenient, and it is easy to maintain the bed frame.

[0105] Furthermore, each of the first row of rib rods 60 is provided with a first connecting cap 61 at its first end, and each corresponding first connecting cap 61 is tightly inserted into the first joint groove 23; each of the first row of rib rods 60 is provided with a second connecting cap 62 at its second end, and each second connecting cap 62 is inserted into the corresponding first overlapping interface, and the lower side of each second connecting cap 62 abuts against the corresponding first overlapping plate 12.

[0106] In this embodiment, each first connecting cap 61 is respectively sleeved on the first end of the first rib rod 60, and each first connecting cap 61 is tightly fitted with the first end of the corresponding first rib rod 60; each second connecting cap 62 is respectively sleeved on the second end of the first rib rod 60, and each second connecting cap 62 is tightly fitted with the second end of the corresponding first rib rod 60. Preferably, the outer periphery of each first connecting cap 61 and the outer periphery of each second connecting cap 62 are integrally connected with limiting flanges. The limiting flanges of each first connecting cap 61 abut against the side of the lap joint body near the first square tube 10, and the limiting flanges of each second connecting cap 62 abut against the periphery of the first square tube 10 corresponding to the first lap joint.

[0107] Furthermore, each of the second row of rib rods 70 is provided with a third connecting cap 71 at its first end, and each corresponding third connecting cap 71 is tightly inserted into the second connector groove 24; each of the second row of rib rods 70 is provided with a fourth connecting cap 72 at its second end, and each fourth connecting cap 72 is inserted into the corresponding second lap joint and the lower side of each fourth connecting cap 72 abuts against the corresponding second lap joint plate.

[0108] In this embodiment, each third connecting cap 71 is respectively sleeved on the first end of the second rib rod 70, and each third connecting cap 71 is tightly fitted with the first end of the corresponding second rib rod 70; each fourth connecting cap 72 is respectively sleeved on the second end of the second rib rod 70, and each fourth connecting cap 72 is tightly fitted with the second end of the corresponding second rib rod 70. Preferably, the outer periphery of each third connecting cap 71 and the outer periphery of each fourth connecting cap 72 are integrally connected with limiting flanges. The limiting flanges of each third connecting cap 71 abut against the side of the lap joint body near the third-party tube 30, and the limiting flanges of each fourth connecting cap 72 abut against the periphery of the third-party tube 30 corresponding to the second lap joint.

[0109] The first square tube 10, the second square tube 20 and the third square tube 30 are respectively equipped with reinforcing feet 80. For ease of explanation, the reinforcing foot 80 on the first square tube 10 is defined as the first reinforcing foot, the reinforcing foot 80 on the second square tube 20 is defined as the second reinforcing foot, and the reinforcing foot 80 on the third square tube 30 is defined as the third reinforcing foot.

[0110] The connection structure between the first square tube 10 and the first reinforcing leg is as follows: a first reinforcing connector 110 is fixed to the upper side of the first reinforcing leg. The first reinforcing connector 110 includes a first reinforcing plate 111, a second reinforcing plate 112, and a third reinforcing plate 113. The first reinforcing plate 111 and the third reinforcing plate 113 are arranged opposite to each other, and the first reinforcing plate 111 and the third reinforcing plate 113 are connected together by the second reinforcing plate 112. The first reinforcing plate 111, the second reinforcing plate 112, and the third reinforcing plate 113 together... A first mounting groove is formed for fixing the first square tube 10. The first mounting groove is an open-ended U-shaped groove. The second reinforcing plate 112 is welded to the upper end of the first reinforcing support. The first reinforcing plate 111 is located on the side of the first square tube 10 away from the second square tube 20. The third reinforcing plate 113 is located on the side of the first square tube 10 close to the second square tube 20. The lower end of the first reinforcing plate 111 is integrally connected to the second reinforcing plate 112. The lower end of the third reinforcing plate 113 is integrally connected to the second reinforcing plate 112. The first square tube 10 is inserted into the first mounting slot. The lower side of the middle position of the first square tube 10 abuts against the second reinforcing plate 112. A third through hole arranged horizontally is opened at the middle position of the first square tube 10. The first reinforcing plate 111 has a third mating hole at the position corresponding to the third through hole. The third reinforcing plate 113 has a third matching hole at the position corresponding to the third through hole. The third through hole, the third matching hole, and the third mating hole are on the same straight line, and all three are installed with the same bolt fixing assembly (not shown in the figure). It should be noted that the bolt fixing assembly is a conventional structure, and the installation method of each bolt fixing assembly is also a conventional installation method, which will not be described in detail.

[0111] The connection structure between the second square tube 20 and the second reinforcing leg is as follows: a second reinforcing connector 120 is fixed to the upper side of the second reinforcing leg. The second reinforcing connector 120 includes a fourth reinforcing plate 121, a fifth reinforcing plate 122, and a sixth reinforcing plate 123. The fourth reinforcing plate 121 and the sixth reinforcing plate 123 are arranged opposite to each other, and the fourth reinforcing plate 121 and the sixth reinforcing plate 123 are connected together by the fifth reinforcing plate 122. The fourth reinforcing plate 121, the fifth reinforcing plate 122, and the sixth reinforcing plate 123 together... A second mounting groove is formed for fixing the second square tube 20. The second mounting groove is an open-ended U-shaped groove. The fifth reinforcing plate 122 is welded to the upper end of the second reinforcing support. The fourth reinforcing plate 121 is located on the side of the second square tube 20 near the first square tube 10. The sixth reinforcing plate 123 is located on the side of the second square tube 20 near the third square tube 30. The lower end of the fourth reinforcing plate 121 is integrally connected to the fifth reinforcing plate 122. The lower end of the sixth reinforcing plate 123 is integrally connected to the fifth reinforcing plate 122. The second square tube 20 is inserted into the second mounting slot. The lower side of the middle position of the second square tube 10 abuts against the fifth reinforcing plate 122. A fourth through hole is horizontally arranged in the middle position of the second square tube 20. The fourth reinforcing plate 121 has a fourth mating hole at the position corresponding to the fourth through hole. The sixth reinforcing plate 123 has a fourth matching hole at the position corresponding to the fourth through hole. The fourth through hole, the fourth matching hole, and the fourth mating hole are on the same straight line, and all three are installed with the same bolt fixing assembly (not shown in the figure). It should be noted that the bolt fixing assembly is a conventional structure, and the installation method of each bolt fixing assembly is also a conventional installation method, which will not be described in detail.

[0112] The connection structure between the third-party pipe 30 and the third reinforcing leg is as follows: a third reinforcing connector 130 is fixed to the upper side of the third reinforcing leg. The structure of the third reinforcing connector 130 is the same as that of the first reinforcing connector 110. Specifically, the third reinforcing connector 130 includes a seventh reinforcing plate 131, an eighth reinforcing plate 132, and a ninth reinforcing plate 133. The seventh reinforcing plate 131 and the ninth reinforcing plate 133 are arranged opposite to each other, and the seventh reinforcing plate 131 and the ninth reinforcing plate 133 are connected together by the eighth reinforcing plate 132. The reinforcing plate 132 and the ninth reinforcing plate 133 together form a third mounting groove for fixing the third third tube 30. The third mounting groove is in the shape of an upward-opening U-shape. The eighth reinforcing plate 132 is welded to the upper end of the third reinforcing support. The seventh reinforcing plate 131 is located on the side of the third third tube 30 closer to the second square tube 20. The ninth reinforcing plate 133 is located on the side of the third third tube 30 away from the second square tube 20. The lower end of the seventh reinforcing plate 131 is integrally connected to the eighth reinforcing plate 132. The lower end of the ninth reinforcing plate 133 is integrally connected to the eighth reinforcing plate 132. The third-party tube 30 is inserted into the third mounting slot. The lower side of the middle position of the third-party tube 30 abuts against the eighth reinforcing plate 132. A fifth through hole is horizontally arranged at the middle position of the third-party tube 30. The seventh reinforcing plate 131 has a fifth mating hole at the position corresponding to the fifth through hole. The ninth reinforcing plate 133 has a fifth matching hole at the position corresponding to the fifth through hole. The fifth through hole, the fifth matching hole, and the fifth mating hole are on the same straight line, and all three are installed with the same bolt fixing assembly (not shown in the figure). It should be noted that the bolt fixing assembly is a conventional structure, and the installation method of each bolt fixing assembly is also a conventional installation method, which will not be described in detail.

[0113] A first reinforcing beam 81 is provided between the first square tube 10 and the second square tube 20. The first reinforcing beam 81 is a hollow square tube with a first end and a second end. The first end of the first reinforcing beam 81 is detachably and fixedly connected to the middle of the first square tube 10, and the second end of the first reinforcing beam 81 is detachably and fixedly connected to the middle of the second square tube 20.

[0114] A second reinforcing beam 82 is provided between the third-party tube 30 and the second square tube 20. The second reinforcing beam 82 is a hollow square tube with a first end and a second end. The first end of the second reinforcing beam 82 is detachably and fixedly connected to the middle of the third-party tube 30, and the second end of the second reinforcing beam 82 is detachably and fixedly connected to the middle of the second square tube 20.

[0115] The connection structure between the first reinforcing beam 81 and the first square tube 10 is as follows: a horizontally arranged first reinforcing plate sub-plate 114 is provided on the side of the third reinforcing plate 113 away from the first reinforcing plate 111. The first reinforcing plate sub-plate 114 is integrally connected with the third reinforcing plate 113. The first end of the first reinforcing beam 81 is installed on the first reinforcing plate sub-plate 114 through a bolt assembly, thereby indirectly fixing it to the first square tube 10.

[0116] The connection structure between the second reinforcing beam 82 and the third-party pipe 30 is as follows: a horizontally arranged second reinforcing plate sub-plate 134 is provided on the side of the seventh reinforcing plate 131 away from the ninth reinforcing plate 133. The second reinforcing plate sub-plate 134 is integrally connected with the seventh reinforcing plate 131. The second reinforcing beam 82 is installed on the second reinforcing plate sub-plate 134 by bolt assembly, thereby indirectly fixing it to the third-party pipe 30.

[0117] The connection structure between the first reinforcing beam 81 and the second square tube 20 is as follows: the second end of the first reinforcing beam 81 is fixedly connected to the second square tube 20 by a conventional bolt assembly.

[0118] The connection structure between the second reinforcing beam 82 and the second square tube 20 is as follows: the first reinforcing beam 81 and the second reinforcing beam 82 are on the same straight line, the second end face of the second reinforcing beam 82 is close to or in close contact with the second end face of the first reinforcing beam 81, and the same connecting tube is inserted in the second reinforcing beam 82 and the first reinforcing beam 81. That is, the first reinforcing beam 81 and the second reinforcing beam 82 are connected together by the connecting tube. One end of the connecting tube is fixedly connected to the second reinforcing beam 82 by a conventional bolt structure, and the other end is fixedly connected to the first reinforcing beam 81 by a conventional bolt structure. The second reinforcing beam 82 is indirectly fixed to the second square tube 20 by being fixedly connected to the first reinforcing beam 81.

[0119] Furthermore, a first limiting member 13 is provided on the first square tube 10, and a third limiting member 33 is provided on the third square tube 30. A second limiting member 44 is provided on the first end frame 40. In this embodiment, the first crossbeam and the second crossbeam of the first end frame 40 are respectively provided with second limiting members 44. The first square tube 10 is provided with two first limiting members 13, and the third square tube 30 is provided with two third limiting members 33. The two first limiting members 13 are arranged sequentially along the longitudinal direction, and the two third limiting members 33 are arranged sequentially along the longitudinal direction. Each first limiting member 13, each second limiting member 44, and each third limiting member 33 together form a limiting assembly for preventing the mattress from slipping when used with the bed frame.

[0120] The first limiting member 13, the third limiting member 33, and the second limiting member 44 have the same structure, so the first limiting member 13 will be used as an example for explanation.

[0121] The first limiting member 13 includes a mating connecting plate 13a with a U-shaped structure and a stop plate 13b located on the upper side of the mating connecting plate and arranged vertically. The mating connecting plate 13a forms a mating mounting groove with an opening facing away from the second square tube 20. The first square tube 10 passes through the mating mounting groove and is tightly fitted with the mating connecting plate 13a. One end of the stop plate 13b is fixedly connected to the mating connecting plate 13a. It should be noted that after installation, the opening of the mating connecting plate 13a on the second limiting member 44 faces away from the second end frame 50; similarly, the opening of the mating connecting plate 13a on the third limiting member 33 also faces away from the second square tube 20.

[0122] In use, this bed frame typically requires a mattress. The mattress is placed on the first row of frame members 60 and the second row of frame members 70. A first limiting member 13, a third limiting member 33, and a second limiting member 44 are used to fix the position of the mattress and prevent it from slipping. It should be noted that the mattress is not part of the bed frame of this invention.

[0123] By adopting the above technical solution, the first row of ribs 60, the first overlapping interface, and the first overlapping plate 12 cooperate with each other, which facilitates the installation of the first row of ribs 60. During the production of the bed frame, it is not necessary to weld U-shaped blocks on the first square tube 10 for the first row of ribs 60 to be placed and fixed, thus saving welding steps and welding costs, and reducing production costs, especially in mass production in the factory. In addition, the first overlapping plate 12 can provide a relatively large support surface, which is conducive to improving the connection stability between the first row of ribs 60 and the first overlapping plate 12, and also helps to disperse pressure and reduce pressure. This makes the assembled bed frame more stable and the assembly operation simple and convenient.

[0124] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0125] The present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, and these modifications all fall within the protection scope of the present invention.

Claims

1. A lap joint for securing a rack bone rod, characterized by: The device includes a connector body, on which a first connector groove and a second connector groove are formed. The first connector groove and the second connector groove are arranged side by side, and the orientation of the opening of the first connector groove is opposite to the orientation of the opening of the second connector groove. The bottom of the connector body is also provided with a fixing member, on which a snap-fit ​​protrusion is formed.

2. The lap joint for fixing rib rods as described in claim 1, characterized in that: A first reinforcing wall is provided on the outer side wall of the lap joint body, the first reinforcing wall being adjacent to the first joint groove and far away from the second joint groove; and / or, a second reinforcing wall is provided on the outer side wall of the lap joint body, the second reinforcing wall being adjacent to the second joint groove and far away from the first joint groove.

3. A lap joint for securing a rack rod as defined in claim 2, wherein: The thickness of the first reinforcing wall gradually decreases from one end near the bottom of the lap joint body to the other end; and / or, the thickness of the second reinforcing wall gradually decreases from one end near the bottom of the lap joint body to the other end.

4. A lap joint for securing a rack rod as claimed in claim 2 or 3, characterised in that: The first reinforcing wall is provided with a first stiffening strip, the first end of the first stiffening strip being close to the bottom of the lap joint body, and the arrangement direction of the first end of the first stiffening strip towards the second end being along a direction away from the bottom of the lap joint body; and / or, the second reinforcing wall is provided with a second stiffening strip, the first end of the second stiffening strip being close to the bottom of the lap joint body, and the arrangement direction of the first end of the second stiffening strip towards the second end being along a direction away from the bottom of the lap joint body.

5. A lap joint for securing a rack rod as defined in claim 4, wherein: The first stiffening strip has a semi-circular cross-section, and / or the second stiffening strip has a semi-circular cross-section.

6. The lap joint for fixing rib rods as described in claim 1, characterized in that: There are two fasteners, one of which is arranged corresponding to the first connector groove, and the other of which is arranged corresponding to the second connector groove.

7. A joint for fixing rib rods as described in claim 1, characterized in that: The fastener is a plastic fastener.

8. A lap joint for securing a rack rod as claimed in claim 6 or 7, characterised in that: The fastener includes a first elastic piece and a second elastic piece. One end of the first elastic piece is connected to the body of the joint, and the other end of the first elastic piece is configured as the snap-fit ​​protrusion. One end of the second elastic piece is connected to the body of the joint, and the other end of the second elastic piece is configured as the snap-fit ​​protrusion. The first elastic piece and the second elastic piece are arranged opposite to each other, and a clearance space is formed between the first elastic piece and the second elastic piece.

9. A lap joint for securing a rack rod as defined in claim 8, wherein: A reinforcing section is also provided between the first elastic sheet and the second elastic sheet. One end of the reinforcing section is fixedly connected to the snap-fit ​​protrusion on the first elastic sheet, and the other end of the reinforcing section is fixedly connected to the snap-fit ​​protrusion on the second elastic sheet.

10. A joint for fixing rib rods as described in claim 9, characterized in that: The first elastic sheet is integrally connected to the reinforcing segment, and the second elastic sheet is integrally connected to the reinforcing segment.

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