Foldable horizontal bar
By improving the structural design of the foldable bar, and utilizing folding rod assemblies and conversion nuts, the folding and unfolding process is simplified, solving the problems of complex operation and missing parts, and providing a convenient user experience.
Patent Information
- Application Number
- CN202520399218.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing foldable horizontal bars are complicated to operate during folding and unfolding, and parts are easily lost.
The design incorporates first and second uprights, first and second bases, folding rod assemblies, and conversion nuts and bolt knobs. Simple folding and unfolding are achieved through the folding base rod and folding rod. The bolt knobs have corresponding mounting through holes in different states to prevent the loss of accessories.
It achieves a simple and convenient folding and unfolding process, avoiding the problem of lost accessories.
Smart Images
Figure CN223944843U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to body -building equipment technical field especially is involved in a kind of foldable horizontal bar. BACKGROUND
[0002] Horizontal bar is a very common body-building equipment, and the traditional horizontal bar is fixed horizontal bar, and its base is fixed on the ground, not easy to disassemble and move, more suitable for professional fitness venues such as square or playground, to meet the needs of users for home use, a foldable horizontal bar gradually appears, for users to use at home.
[0003] In the prior art, the structure of the foldable horizontal bar usually includes a horizontal bar, two vertical columns connected to the two ends of the horizontal bar, and two bases connected to the bottoms of the two vertical columns. The structure of the base is usually triangular or flat plate type. The two bases connected to the bottoms of the two vertical columns are fixedly connected together by a bottom cross beam parallel to the horizontal bar. In the prior art, the base is usually an integrally manufactured structure, and the base and the two vertical columns are connected together by a bolt structure. When the horizontal bar is folded, the bolt between the base and the corresponding vertical column is disassembled, the base and the corresponding vertical column are completely separated, and then the corresponding folding is stored. There are at least the problems of inconvenient disassembly and assembly and easy loss of bolt accessories after disassembly. UTILITY MODEL CONTENT
[0004] The purpose of the present application is to provide a foldable horizontal bar to alleviate the technical problems of complex operation and easy loss of accessories in the prior art.
[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:
[0006] The present application provides a foldable horizontal bar, which comprises a horizontal bar, a first vertical column, a second vertical column, a first base and a second base.
[0007] The first vertical column and the second vertical column are spaced apart, and the top end of the first vertical column and the top end of the second vertical column are connected to the horizontal bar.
[0008] The first base and the second base respectively comprise a support column and two folding rod groups symmetrically arranged on both sides of the support column.
[0009] The bottom end of the first vertical column is mounted or integrally connected to the top end of the support column of the first base, and the bottom end of the second vertical column is mounted or integrally connected to the top end of the support column of the second base.
[0010] Each of the folding rod groups comprises a respective bottom rod, a conversion nut, a bolt knob, a first folding rod and a second folding rod; one end of the bottom rod is hingedly connected to the bottom end of the support column; the first end of the first folding rod and the first end of the second folding rod are hingedly connected to each other, one of the second end of the first folding rod and the second end of the second folding rod is hingedly connected to the bottom rod, and the other is hingedly connected to the support column;
[0011] In the open state, the first end of the first folding rod and the first end of the second folding rod are hingedly connected to each other, one of the second end of the first folding rod and the second end of the second folding rod is hingedly connected to the bottom rod, and the other is hingedly connected to the support column;
[0012] In the open state, the rod portion of the bolt knob passes through the first through hole and the second through hole and is threadedly connected to the conversion nut; during the transition from the open state to the folded state, the first folding rod and the second folding rod are respectively folded around the hingedly connected part of the first end of the two, and the end of the bottom rod away from the support column is folded upward around the hingedly connected part of the support column; in the folded state, the rod portion of the bolt knob passes through the third through hole and the second through hole and is threadedly connected to the conversion nut.
[0013] In some optional technical solutions of the present application, the accommodating groove on the first folding rod is arranged on the folding inner side surface of the first end of the first folding rod, and in the transition from the unfolded state to the folded state, the first folding rod and the second folding rod are respectively folded from the folding outer side surface to the folding inner side surface around the part where the first ends of the two folding rods are hingedly connected to each other (the first end of the first folding rod and the first end of the second folding rod move upward, and the two folding rods are folded into an "inverted V" shape). In some other optional embodiments of the present application, the accommodating groove on the first folding rod is arranged on the folding outer side surface of the first end of the first folding rod, and in the transition from the unfolded state to the folded state, the first folding rod and the second folding rod are respectively folded from the folding inner side surface to the folding outer side surface around the part where the first ends of the two folding rods are hingedly connected to each other (the first end of the first folding rod and the first end of the second folding rod move downward, and the two folding rods are folded into a "V" shape).
[0014] In some optional technical solutions of the present application, the first through hole and the third through hole both pass through the folding inner side surface and the folding outer side surface of the first folding rod; and the second through hole passes through the folding inner side surface and the folding outer side surface of the second folding rod. In some other optional technical solutions of the present application, the first through hole and the third through hole both pass through the first folding rod along the axial direction of the cross rod; and the second through hole passes through the second folding rod along the axial direction of the cross rod.
[0015] In some optional technical solutions of the present application, the accommodating groove has a first side wall and a second side wall extending along the axial direction of the first folding rod and opposite to each other in the radial direction of the first folding rod; a hinge shaft is arranged between the first side wall and the second side wall; the part of the second folding rod inside the accommodating groove is provided with a hinge hole passing through the second folding rod in the radial direction of the second folding rod; and the hinge shaft comprises a bolt passing through the first side wall and the second side wall, and a nut threadedly connected to the bolt, wherein the rod part of the bolt passes through the hinge hole.
[0016] In some optional technical solutions of the present application, one of the first folding rod and the second folding rod hingedly connected to the bottom rod is a lower folding rod, and one of the first folding rod and the second folding rod hingedly connected to the support column is an upper folding rod.
[0017] The side surface of the bottom rod facing the lower folding rod is provided with a first connecting piece with a U-shaped cross section, a first rotating shaft is arranged inside the first connecting piece, and the second end of the lower folding rod is provided with a first mounting hole passing through the lower folding rod in the radial direction of the lower folding rod, and the first rotating shaft passes through the first mounting hole.
[0018] The support column is provided with a second connecting piece in U-shaped section on one side surface of the upper folding rod, a second rotating shaft is arranged in the second connecting piece, and the upper folding rod is provided with a second mounting hole penetrating the upper folding rod along the radial direction of the upper folding rod, and the second rotating shaft penetrates the second mounting hole.
[0019] Further, the first rotating shaft and the second rotating shaft each include a bolt penetrating the corresponding connecting piece and a nut threadedly connected to the bolt, and the rod portion of the bolt penetrates the mounting hole of the end portion of the corresponding folding rod.
[0020] In some optional technical solutions of the present application, a plurality of first fixing holes extending along the respective radial directions are arranged on the first upright column and the second upright column at intervals along the respective axial directions, a second fixing hole penetrating the support column along the radial direction of the support column is arranged at the top end of the support column, and a locking nut coaxial with the second fixing hole is fixedly connected to the outer peripheral surface of the support column.
[0021] The bottom end of the first upright column and the bottom end of the second upright column are respectively sleeved with the top end of the support column of the corresponding base and are fixed together by a second bolt knob, the rod portion of the second bolt knob penetrates the second fixing hole arranged in the corresponding support column and any first fixing hole arranged in the corresponding upright column and is threadedly mounted to the locking nut.
[0022] In some optional technical solutions of the present application, the top end of the first upright column and the top end of the second upright column are respectively connected to the two ends of the crossbar along the axial direction by end connecting assemblies.
[0023] The end connecting assembly includes a U-shaped mounting seat, an end bolt and an end nut.
[0024] The top end of the first upright column and the top end of the second upright column are respectively provided with mounting holes extending along the respective radial directions, the U-shaped mounting seat is fixed to the end lower surface of the crossbar in an opening-down manner, the top end of the first upright column and the top end of the second upright column are respectively inserted into the U-shaped space of the corresponding U-shaped mounting seat, and the end bolt is threadedly connected with the end nut after penetrating the U-shaped mounting seat and the mounting hole of the top end of the corresponding upright column.
[0025] In some optional technical solutions of the present application, the foldable single bar is further provided with a bottom reinforcing beam parallel to the crossbar, one end of the bottom reinforcing beam along the axial direction is mounted or integrally connected to the bottom end of the support column of the first base, and the other end of the bottom reinforcing beam along the axial direction is mounted or integrally connected to the bottom end of the support column of the second base.
[0026] Further optionally, a T-shaped sleeve pipe fitting is fixedly connected to the bottom end of the support column, and one end of each of the two bottom rods and one end of the bottom reinforcing beam are respectively installed on corresponding interfaces of the T-shaped sleeve pipe fitting through bolt-nut assemblies.
[0027] The present application can achieve the following beneficial effects:
[0028] For the foldable single bar provided by the present application, when switching from the open state to the folded state, only the bolt knob needs to be unscrewed, the bottom rod, the first folding rod and the second folding rod are folded, and after folding in place, the bolt knob is screwed into the corresponding through hole, which is simple and convenient to operate, and during the process, the conversion nut is fixed to the first folding rod and / or the second folding rod, and the bolt knob has corresponding installation through holes in the open state and the folded state, so that the problem of missing accessories is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0029] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0030] Figure 1 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application.
[0031] Figure 2 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application. Figure 1 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application.
[0032] Figure 3 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application. Figure 2 An exploded schematic diagram of the structure is provided.
[0033] Figure 4 An enlarged view of the local structure of part A in the foldable single bar is provided. Figure 1 An enlarged view of the local structure of part A in the foldable single bar is provided.
[0034] Figure 5 An enlarged view of the local structure of part A in the foldable single bar is provided. Figure 1 A schematic diagram of the overall structure of the foldable single bar in the folded state is provided for the embodiments of the present application.
[0035] Figure 6 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application. Figure 5 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application.
[0036] Figure 7 A schematic diagram of the overall structure of the foldable single bar in the open state is provided for the embodiments of the present application.
[0037] Figure 8 For Figure 7 The overall structure schematic diagram of the second base in the second embodiment of the utility model;
[0038] Figure 9 For Figure 8 The explosion schematic diagram of the structure;
[0039] Figure 10 For Figure 7 The overall structure schematic diagram of the foldable horizontal bar in the folded state in the second embodiment of the utility model;
[0040] Figure 11 For Figure 7 The overall structure schematic diagram of the second base in the second embodiment of the utility model.
[0041] Figure legend: 1-horizontal rod; 21-first vertical column; 22-second vertical column; 23-first fixed hole; 31-first base; 32-second base; 300-folded rod group; 301-abutment; 310-lower folded rod; 311-first through hole; 312-third through hole; 3101-receiving groove; 31011-protruding part; 320-upper folded rod; 321-second through hole; 323-hinge hole; 324-hinge shaft; 330-bottom rod; 340-support column; 341-second fixed hole; 350-conversion nut; 360-bolt knob; 371-first connecting sheet; 372-second connecting sheet; 380-locking nut; 381-second bolt knob; 390-T-shaped sleeve pipe fitting; 5-bottom reinforcing beam; 41-U-shaped mounting seat; 42-end bolt; 6-anti-skid foot sleeve. DETAILED DESCRIPTION
[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0043] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.
[0044] It should be noted that: similar labels and letters represent similar items in the drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0045] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, and are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed in a particular orientation and be operated, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are merely used for differentiation in description and cannot be understood as indicating or implying relative importance.
[0046] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" merely means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0047] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0048] Some embodiments of the application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.
[0049] The application provides a foldable single bar, referring to Figures 1 to 6 , which is an optional embodiment of the foldable single bar, referring to Figures 7 to 11 , which is another optional embodiment of the foldable single bar. Referring to Figures 1 to 11 The foldable single bar provided by the application comprises a crossbar 1, a first stand 21, a second stand 22, a first base 31 and a second base 32; the first stand 21 and the second stand 22 are arranged at intervals, and the top end of the first stand 21 and the top end of the second stand 22 are both connected to the crossbar 1.
[0050] The first base 31 and the second base 32 respectively comprise a support column 340 and two folding rod groups 300 symmetrically arranged on both sides of the support column 340; the bottom end of the first stand 21 is mounted or integrally connected to the top end of the support column 340 of the first base 31, and the bottom end of the second stand 22 is mounted or integrally connected to the top end of the support column 340 of the second base 32.
[0051] Each folding rod set 300 comprises a respective bottom rod 330, a conversion nut 350, a bolt knob 360, a first folding rod and a second folding rod; one end of the bottom rod 330 is hinged to the bottom end of the support column 340; the first end of the first folding rod and the first end of the second folding rod are hinged to each other, one of the second end of the first folding rod and the second end of the second folding rod is hinged to the bottom rod 330, and the other is hinged to the support column 340.
[0052] In the open state shown in Figures 1 to 3 and Figures 7 to 9 , the side surface of the first folding rod and the second folding rod towards the bottom rod 330 and the support column 340 is the respective folding inner side surface, and the opposite side surface opposite to the folding inner side surface is the respective folding outer side surface; the folding inner side surface or the folding outer side surface of the first end of the first folding rod is provided with a receiving groove 3101, and one end of the receiving groove 3101 penetrates the end surface of the first end of the first folding rod; the first folding rod is provided with a first through hole 311 and a third through hole 312 arranged along the axial direction of the first folding rod and penetrating the first folding rod along the radial direction of the first folding rod, and at least the first through hole 311 penetrates the side wall of the receiving groove 3101. The first end of the second folding rod is inserted into the receiving groove 3101 of the first folding rod and is hinged to the side wall of the receiving groove 3101 between the first through hole 311 and the third through hole 312; the second folding rod is provided with a second through hole 321 penetrating the second folding rod along the radial direction of the second folding rod at the position inside the receiving groove 3101. The conversion nut 350 coaxial with the second through hole 321 is fixed to the position inside or on one side of the second folding rod at the position inside the second through hole 321, and / or the conversion nut 350 coaxial with the corresponding through hole is fixed to the position inside or on one side of the first folding rod at the position inside the first through hole 311 and the third through hole 312 respectively; ("and / or" means that the structure before "and / or" and the structure after "and / or" are arranged simultaneously or selectively).
[0053] In the open state, as shown in Figures 1 to 3 and Figures 7 to 9 , the rod part of the bolt knob 360 penetrates the first through hole 311 and the second through hole 321 and is threadedly connected to the conversion nut 350; during the transition from the open state to the folding state, the first folding rod and the second folding rod are respectively folded around the hinged part of the first end of the two, and the end of the bottom rod 330 away from the support column 340 is folded upwards around the hinged part with the support column 340; in the folding state, as shown in Figure 5 , Figure 6 in combination with Figure 3 , and as shown in Figure 10 , Figure 11 in combination with Figure 9 , the rod part of the bolt knob 360 penetrates the third through hole 312 and the second through hole 321 and is threadedly connected to the conversion nut 350.
[0054] For the foldable single bar provided by the embodiment, when switching from the open state to the folded state, only the bolt knob 360 needs to be unscrewed, the bottom bar 330, the first folding bar and the second folding bar are folded, and after folding in place, the bolt knob 360 is screwed into the corresponding through hole, which is simple and convenient to operate, and during the process, the conversion nut 350 is fixed to the first folding bar and / or the second folding bar, and the bolt knob 360 has corresponding mounting through holes in the open state and the folded state, so that the problem of missing accessories is avoided.
[0055] In addition, for the foldable single bar provided by the embodiment, the structures of the remaining bars or columns other than the horizontal bar 1 can be selected but are not limited to being made of stainless steel pipes, and the cross section of the pipe can be a circular pipe or a square pipe or other shapes.
[0056] In some optional embodiments of the present application, as shown in Figures 1 to 11 In the open state to the folded state transition process, the first folding bar and the second folding bar are respectively folded from the folding outer side surface to the folding inner side surface around the part where the first ends of the two are hinged to each other (the first end of the first folding bar and the first end of the second folding bar move upward, and the two folding bars are folded into an "inverted V" shape); in another optional embodiment of the present application, the receiving groove 3101 on the first folding bar is arranged on the folding outer side surface of the first end of the first folding bar, and in the open state to the folded state transition process, the first folding bar and the second folding bar are respectively folded from the folding inner side surface to the folding outer side surface around the part where the first ends of the two are hinged to each other (the first end of the first folding bar and the first end of the second folding bar move downward, and the two folding bars are folded into a "V" shape).
[0057] Referring to Figures 1 to 6 In an optional embodiment of the application, the first through hole 311 and the third through hole 312 both pass through the folding inner side surface and the folding outer side surface of the first folding bar; the second through hole 321 passes through the folding inner side surface and the folding outer side surface of the second folding bar, and the bolt knob 360 is rotated on the inner side surface or the outer side surface of each folding bar. Referring to Figures 7 to 11 In another optional embodiment of the application, the first through hole 311 and the third through hole 312 both pass through the first folding bar along the axial direction of the horizontal bar 1; the second through hole 321 passes through the second folding bar along the axial direction of the horizontal bar 1, and the bolt knob 360 is rotated on the left side surface or the right side surface of each folding bar extending along the axial direction of the horizontal bar 1.
[0058] In any of the above optional embodiments, further:
[0059] Optionally, continuing to refer to Figures 1 to 3 and Figures 7 to 9The accommodating groove 3101 has a first side wall and a second side wall extending along the first folding rod in the axial direction and opposite to each other in the radial direction of the first folding rod; the hinge shaft 324 is arranged between the first side wall and the second side wall; the second folding rod is provided with a hinge hole 323 penetrating the second folding rod in the radial direction of the second folding rod at a position inside the accommodating groove 3101; the hinge shaft 324 comprises a bolt penetrating the first side wall and the second side wall of the accommodating groove 3101, and a nut threadedly connected to the bolt, the rod portion of the bolt penetrating the hinge hole 323, so as to realize the mutual hinge connection between the first end of the first folding rod and the first end of the second folding rod. For the accommodating groove 3101, it can be directly arranged on the first folding rod, or as shown in Figures 1 to 3 , the butt joint 301 is fixedly connected to the first end of the first folding rod, and the accommodating groove 3101 and the first through hole 311 are formed in the butt joint 301; in addition, whether the butt joint 301 is arranged or not, in order to enhance the structural strength of the folding rod and facilitate the manufacturing, a protruding portion 31011 protruding towards the folding inner side surface can be further arranged at the middle of the first side wall and the second side wall of the accommodating groove 3101, and the hinge shaft 324 is arranged in the protruding portion 31011; or as shown in Figure 8 and Figure 9 , the protruding portion is arranged at one side of the accommodating groove 3101, and the third through hole 312 is arranged in the protruding portion.
[0060] Continuing to refer to Figures 1 to 6 and Figures 7 to 11 , of the first folding rod and the second folding rod, the one hinged to the bottom rod 330 is the lower folding rod 310, and the one hinged to the support column 340 is the upper folding rod 320:
[0061] Optionally, the first connecting piece 371 in the U-shaped cross section is arranged on the side surface of the bottom rod 330 facing the lower folding rod 310, the first rotating shaft is arranged inside the first connecting piece 371, the second end (the bottom end) of the lower folding rod 310 is provided with the first mounting hole penetrating the lower folding rod 310 in the radial direction of the lower folding rod 310, and the first rotating shaft penetrates the first mounting hole, so as to realize the hinge connection between the second end of the lower folding rod 310 and the bottom rod 330; the second connecting piece 372 in the U-shaped cross section is arranged on the side surface of the support column 340 facing the upper folding rod 320, the second rotating shaft is arranged inside the second connecting piece 372, the second end (the top end) of the upper folding rod 320 is provided with the second mounting hole penetrating the upper folding rod 320 in the radial direction of the upper folding rod 320, and the second rotating shaft penetrates the second mounting hole, so as to realize the hinge connection between the second end of the upper folding rod 320 and the support column 340. Preferably, the first rotating shaft and the second rotating shaft each comprise a bolt penetrating the corresponding connecting piece and a nut threadedly connected to the bolt, and the rod portion of the bolt penetrates the mounting hole of the corresponding folding rod end.
[0062] Optionally, as shown in Figures 1 to 11As shown, a plurality of first fixing holes 23 extending along respective radial directions are arranged on the first upright column 21 and the second upright column 22 at respective axial intervals, the top end of the support column 340 is provided with a second fixing hole 341 penetrating through the support column 340 along the radial direction of the support column 340, and a locking nut 380 coaxial with the second fixing hole 341 is fixedly connected to the outer circumferential surface of the support column 340. The bottom end of the first upright column 21 and the bottom end of the second upright column 22 are respectively sleeved with the top end of the support column 340 of the corresponding base and are fixed together by a second screw knob 381, the shank of the second screw knob 381 penetrates through the second fixing hole 341 arranged on the corresponding support column 340 and any first fixing hole 23 arranged on the corresponding upright column and is threadedly installed in the locking nut 380. Through the structure, the height of the first upright column 21 and the second upright column 22 can be adaptively adjusted according to the needs of the user to meet different operation requirements.
[0063] In addition, in the present application, if the top end of the first upright column 21 and the top end of the second upright column 22 are fixedly connected with the crossbar 1, it is not conducive to adjusting the height of the first upright column 21 and the second upright column 22 respectively. In contrast, in some optional embodiments of the present application, the top end of the first upright column 21 and the top end of the second upright column 22 are respectively connected to the two ends in the axial direction of the crossbar 1 through an end connecting assembly. Referring to Figure 4 , in combination with Figure 1 and Figure 5 , the end connecting assembly comprises a U-shaped mounting seat 41, an end bolt 42 and an end nut. The top end of the first upright column 21 and the top end of the second upright column 22 are respectively provided with mounting holes extending along respective radial directions. The U-shaped mounting seat 41 is fixed to the end lower surface of the crossbar 1 in a downward opening manner. The top end of the first upright column 21 and the top end of the second upright column 22 are respectively inserted into the U-shaped space of the corresponding U-shaped mounting seat 41. The end bolt 42 is threadedly connected with the end nut after penetrating through the U-shaped mounting seat 41 and the mounting hole of the top end of the corresponding upright column. When it is necessary to adjust the height of the upright column, the end bolt 42 is loosened for adjustment. After adjustment, it can be tightened. The adjustment process is more flexible. It should be noted that when the crossbar 1 adopts a common wooden structure, a sleeve provided with the above-mentioned U-shaped mounting seat 41 can be sleeved at the two ends in the axial direction of the crossbar 1 as an end connecting member to realize the above-mentioned connecting structure.
[0064] In addition, referring to Figure 1 and Figure 5 , in order to strengthen the stability of the opened single bar, in some optional embodiments of the present application, the foldable single bar is further provided with a bottom reinforcing beam 5 parallel to the crossbar 1. One end in the axial direction of the bottom reinforcing beam 5 is mounted or integrally connected to the bottom end of the support column 340 of the first base 31. The other end in the axial direction of the bottom reinforcing beam 5 is mounted or integrally connected to the bottom end of the support column 340 of the second base 32.
[0065] Preferably, as Figure 2 andFigure 3 As shown, the bottom end of the support column 340 is fixedly connected with a T-shaped sleeve pipe fitting 390, and one end of each of the two bottom bars 330 and one end of the bottom reinforcing beam 5 are respectively installed on the corresponding interfaces of the T-shaped sleeve pipe fitting 390 through bolt-nut assemblies.
[0066] In addition, in order to prevent the bottom bar from sliding during use, optionally, an anti-skid foot sleeve 6 can also be sleeved on the end of the bottom bar 330 axially away from the support column 340, and the anti-skid foot sleeve 6 is provided with anti-skid lines on the bottom surface after the horizontal bar is opened.
[0067] Finally, it should be pointed out that:
[0068] 1. The drawings in the specification only show the structure view of the first folding bar as the lower folding bar and the second folding bar as the upper folding bar, and the actual application also includes the technical solution of the first folding bar as the upper folding bar and the second folding bar as the lower folding bar, which can be obtained by structural transformation according to the above-mentioned embodiments, and both solutions are within the protection scope of the application;
[0069] 2. Each application in the specification is described in a progressive manner, and each application mainly explains the differences from other applications, and the same and similar parts between each application can be referred to each other. The above applications in the specification are only used to explain the technical solutions of the application, but not to limit them. Although the application has been described in detail with reference to the foregoing applications, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing applications can still be modified, or some or all of the technical features can be replaced by equivalents. The modification or replacement does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the applications.
Claims
1. A foldable horizontal bar, characterized by: The crossbar (1), the first upright (21), the second upright (22), the first base (31) and the second base (32); The first upright (21) and the second upright (22) are spaced apart, and the top end of the first upright (21) and the top end of the second upright (22) are connected to the crossbar (1); The first base (31) and the second base (32) respectively comprise a support column (340) and two folding rod groups (300) symmetrically arranged on both sides of the support column (340); The bottom end of the first upright (21) is mounted or integrally connected to the top end of the support column (340) of the first base (31), and the bottom end of the second upright (22) is mounted or integrally connected to the top end of the support column (340) of the second base (32); Each folding rod group (300) respectively comprises a respective bottom rod (330), a conversion nut (350), a bolt knob (360), a first folding rod and a second folding rod; one end of the bottom rod (330) is hinged to the bottom end of the support column (340); the first end of the first folding rod and the first end of the second folding rod are hinged to each other, and one of the second end of the first folding rod and the second end of the second folding rod is hinged to the bottom rod (330), and the other is hinged to the support column (340); In the open state, the first folding rod and the second folding rod each have a folding inner side surface facing one side surface of the bottom rod (330) and the support column (340), and an opposite side surface opposite to the folding inner side surface as a folding outer side surface, and: The folding inner side surface or the folding outer side surface of the first end of the first folding rod is provided with a containing groove (3101), and one end of the containing groove (3101) penetrates the end face of the first end of the first folding rod; the first folding rod is provided with a first through hole (311) and a third through hole (312) arranged along the axial direction of the first folding rod and penetrating the first folding rod in the radial direction, and at least the first through hole (311) penetrates the side wall of the containing groove (3101); The first end of the second folding rod is inserted into the containing groove (3101) of the first folding rod and is hinged to the side wall of the containing groove (3101) between the first through hole (311) and the third through hole (312); the second folding rod is provided with a second through hole (321) penetrating the second folding rod in the radial direction at the part inside the containing groove (3101) or on one side of the second folding rod; The conversion nut (350) coaxial with the second through hole (321) is fixed on the part inside the second through hole (321) or on one side of the second folding rod, and / or the conversion nut (350) coaxial with the corresponding through hole is fixed on the part inside or on one side of the first through hole (311) and the third through hole (312) of the first folding rod, respectively. In the open state, the rod of the bolt knob (360) passes through the first through hole (311) and the second through hole (321) and is screwed to the conversion nut (350); in the transition from the open state to the folded state, the first folding rod and the second folding rod are folded around the part where the two first ends are hinged to each other, respectively, and the end of the bottom rod (330) away from the support column (340) is folded upward around the hinged part with the support column (340); in the folded state, the rod of the bolt knob (360) passes through the third through hole (312) and the second through hole (321) and is screwed to the conversion nut (350).
2. The foldable horizontal bar of claim 1, wherein: The first through hole (311) and the third through hole (312) both pass through the folded inner side surface and the folded outer side surface of the first folding rod; the second through hole (321) passes through the folded inner side surface and the folded outer side surface of the second folding rod.
3. The foldable horizontal bar of claim 1, wherein: The first through hole (311) and the third through hole (312) both pass through the first folding rod along the axial direction of the crossbar (1); the second through hole (321) passes through the second folding rod along the axial direction of the crossbar (1).
4. The foldable horizontal bar according to any one of claims 1-3, characterized in that: The accommodating groove (3101) has a first side wall and a second side wall extending along the axial direction of the first folding rod and being opposite in the radial direction of the first folding rod; a hinge shaft (324) is arranged between the first side wall and the second side wall; the part of the second folding rod inside the accommodating groove (3101) is provided with a hinge hole (323) passing through the second folding rod in the radial direction of the second folding rod; The hinge shaft (324) comprises a bolt passing through the first side wall and the second side wall, and a nut screwed to the bolt, the rod of the bolt passing through the hinge hole (323).
5. The foldable horizontal bar according to any one of claims 1-3, wherein: one of the first folding rod and the second folding rod hinged to the bottom rod (330) is a lower folding rod (310), and the other is an upper folding rod (320) hinged to the support column (340); a first connecting piece (371) with a U-shaped cross section is arranged on the side surface of the bottom rod (330) facing the lower folding rod (310), a first rotating shaft is arranged inside the first connecting piece (371), and a first mounting hole passing through the lower folding rod (310) in the radial direction of the lower folding rod (310) is arranged at the second end of the lower folding rod (310), and the first rotating shaft passes through the first mounting hole; a second connecting piece (372) with a U-shaped cross section is arranged on the side surface of the support column (340) facing the upper folding rod (320), a second rotating shaft is arranged inside the second connecting piece (372), and a second mounting hole passing through the upper folding rod (320) in the radial direction of the upper folding rod (320) is arranged at the second end of the upper folding rod (320), and the second rotating shaft passes through the second mounting hole.
6. The foldable horizontal bar of claim 5, wherein: The first rotating shaft and the second rotating shaft each include a bolt passing through a corresponding connecting sheet and a nut screwed to the bolt, a rod portion of the bolt passing through a mounting hole of a corresponding folding rod end portion.
7. The foldable horizontal bar according to any one of claims 1-3, characterized in that: The first upright column (21) and the second upright column (22) each have a plurality of first fixing holes (23) extending in a respective radial direction and spaced apart in a respective axial direction, the top end of the support column (340) has a second fixing hole (341) extending in a radial direction of the support column (340) and penetrating through the support column (340), and the outer circumferential surface of the support column (340) is fixedly connected with a locking nut (380) coaxial with the second fixing hole (341). The bottom end of the first upright column (21) and the bottom end of the second upright column (22) are respectively sleeved with the top end of the support column (340) of a corresponding base and are fixed together by a second bolt knob (381), a rod portion of the second bolt knob (381) passes through the second fixing hole (341) provided in the corresponding support column (340) and any first fixing hole (23) provided in the corresponding upright column and is screwed to the locking nut (380).
8. The foldable horizontal bar according to any one of claims 1-3, wherein: The top end of the first upright column (21) and the top end of the second upright column (22) are respectively connected to two ends of the horizontal bar (1) in an axial direction by end connection assemblies. The end connection assembly includes a U-shaped mounting seat (41), an end bolt (42) and an end nut. The top end of the first upright column (21) and the top end of the second upright column (22) are respectively provided with mounting holes extending in a respective radial direction, the U-shaped mounting seat (41) is fixed to the end lower surface of the horizontal bar (1) in a downward opening manner, the top end of the first upright column (21) and the top end of the second upright column (22) are respectively inserted into the U-shaped space of the corresponding U-shaped mounting seat (41), and the end bolt (42) passes through the mounting holes of the U-shaped mounting seat (41) and the top end of the corresponding upright column and is screwed to the end nut.
9. The foldable horizontal bar according to any one of claims 1-3, wherein: The foldable horizontal bar further has a bottom reinforcing beam (5) parallel to the horizontal bar (1), one end of the bottom reinforcing beam (5) in an axial direction is mounted or integrally connected to the bottom end of the support column (340) of the first base (31), and the other end of the bottom reinforcing beam (5) in the axial direction is mounted or integrally connected to the bottom end of the support column (340) of the second base (32).
10. The foldable horizontal bar of claim 9, wherein: The bottom end of the support column (340) is fixedly connected with a T-shaped sleeve pipe fitting (390), one end of each of the two bottom rods (330) in an axial direction and one end of the bottom reinforcing beam (5) in an axial direction are respectively mounted to corresponding interfaces of the T-shaped sleeve pipe fitting (390) by bolt and nut assemblies.