Rod fixing structure

Abstract

A rod fixing structure, comprising a connecting sleeve (1), wherein the connecting sleeve is provided with a sleeve hole (11) with two ends in communication with each other, the sleeve hole being a tapered hole with a narrow upper part and a wide lower part; at least two connecting wings (2) are provided on an outer wall of the connecting sleeve; the connecting wings rotate around a central line of the sleeve hole and are distributed on the periphery of the connecting sleeve at intervals; and the connecting sleeve is configured to be sleeved on a vertically-arranged supporting rod (5), and each connecting wing is configured to be fixed to a horizontally-arranged horizontal support rod (6) in a locked or snap-fit manner. The connecting sleeve is of an independent structure and can be detachably connected to the support rod. Thanks to the fact that the connecting wings are provided on the connecting sleeve, the vertically-arranged support rod can be conveniently connected to the horizontally-arranged supporting rods by means of the connecting sleeve, and a frame structure such as a storage rack or a bedstead can be conveniently formed.

Description

Rod fixing structure Technical Field

[0001] The invention relates to the technical field of hardware connectors, in particular to a rod fixing structure. Background Art

[0002] As a commonly used storage rack for items, storage racks are widely used for goods storage in supermarkets, warehouses, express delivery points, etc. Common storage racks include corrugated racks, angle steel racks, etc. For example, the storage device disclosed in Chinese patent CN2263478Y includes a plurality of support rods and a plurality of horizontal racks, and the horizontal racks and the support rods are usually connected by connecting parts; the horizontal racks in this solution are integrally fixed with a trumpet-shaped sleeve, which can be adjustably fixedly connected to the support rods through the trumpet-shaped sleeve and the fitting element; however, since the trumpet-shaped sleeve is integrally located on the horizontal rack, when the product is installed, it is necessary to accurately position the positions of the support rods relative to each other, otherwise the trumpet-shaped sleeve cannot be smoothly inserted into the support rods, which makes the installation and disassembly of the storage device more difficult. Summary of the Invention

[0003] The object of the present invention is to provide a rod fixing structure which has the advantage of being easy to install and disassemble.

[0004] In order to achieve the above object, the solution of the present invention is:

[0005] A rod fixing structure includes a connecting sleeve; the connecting sleeve has a sleeve hole with two ends passing through, and the sleeve hole is a tapered hole that is narrow at the top and wide at the bottom; the outer wall of the connecting sleeve is provided with at least two connecting wings; each connecting wing rotates around the center line of the sleeve hole and is distributed on the outer periphery of the connecting sleeve at intervals; the connecting sleeve is used to be sleeved on a vertically arranged support rod, and the connecting wings are used to lock or clamp with a horizontal support rod arranged horizontally.

[0006] The horizontal cross-section of the sleeve hole is circular, elliptical, triangular or rectangular; the outer wall of the connecting sleeve is cylindrical, frustum or prism-shaped; and the connecting wing is welded and fixed to the outer wall of the connecting sleeve.

[0007] The connecting wing is perpendicular to the outer wall of the connecting sleeve. The inner side of the connecting wing is connected to a locking portion that abuts against the outer wall of the connecting sleeve and is locked and fixed to the outer wall of the connecting sleeve. A connecting screw is also included. The locking portion is provided with at least two connecting holes spaced vertically apart. The outer wall of the connecting sleeve is provided with locking holes corresponding to the connecting holes, and the locking holes are provided with internal threads. The number of connecting screws corresponds to the number of connecting holes. The connecting screws pass through the connecting holes and lock into the locking holes, thereby locking the connecting wing to the connecting sleeve.

[0008] The connecting wing includes a first side panel and a second side panel that are spaced apart and parallel to each other, and the locking portion is between the inner side edges of the first side panel and the second side panel; the first side panel and the second side panel are both provided with the quick-connect holes or quick-connect fasteners; a reinforcing plate is connected between the outer sides of the first side panel and the second side panel; a clearance hole is provided on the reinforcing plate corresponding to the connecting hole; the connecting screw passes through the clearance hole and is locked with the connecting hole and the lock hole.

[0009] There are two to four connecting fins, which are distributed on the outer wall of the connecting sleeve at 90-degree intervals.

[0010] The connecting sleeve is a split structure, including a first arc piece and a second arc piece that are interlocked with each other in the radial direction and can be detachably locked together, and the sleeve hole is formed between the interlocked first arc piece and the second arc piece.

[0011] At least one connecting lock hole is respectively provided on the two circumferential edges of the first arc piece and the second arc piece, and the connecting lock hole passes through the circumferential end surface and the edge arc surface of the circumferential edge. When the first arc piece and the second arc piece are buckled and engaged with each other, the connecting lock holes on the mutually docking circumferential edges are aligned with each other, and a locking screw is movably inserted into each of the aligned connecting lock holes to lock and fix them.

[0012] At least one locking block is circumferentially extended and protruded on one of the circumferential edges of the first arc piece and the second arc piece, and at least one locking groove is recessed on the other circumferential edge of the first arc piece and the second arc piece. At the same time, locking through holes are respectively provided on the axial end faces of the first arc piece and the second arc piece corresponding to the locking grooves, and the locking through holes are provided with axially connected locking grooves; when the first arc piece and the second arc piece are buckled and engaged, the locking block of the first arc piece is embedded in the locking groove of the second arc piece, and the locking block of the second arc piece is correspondingly embedded in the locking groove of the first arc piece, and each locking block is respectively provided with a locking bottom hole corresponding to each locking through hole, and locking screws are movably locked in the corresponding locking through holes and locking bottom holes.

[0013] After buckling, any one end face of the first arc piece and the second arc piece is locked and fixed by two semi-ring locking pieces; the two locking piece connecting parts distributed circumferentially on the semi-ring locking piece are respectively fitted with the end faces of the first arc piece and the second arc piece, and at the same time, a locking piece through hole is provided on the locking piece connecting part, and the end faces of the first arc piece and the second arc piece are respectively provided with arc piece locking holes corresponding to the locking piece through holes. The fastener passes through the locking piece through hole and is locked into the arc piece locking hole, so that the semi-ring locking piece is respectively locked and fixed with the first arc piece and the second arc piece.

[0014] It also includes a fitting assembly; an annular groove is provided on the outer wall of the support rod; the fitting assembly includes two half-sleeves that are movably snap-fitted; the inner wall of the fitting assembly is movably fitted to the outer wall of the support rod, and the inner wall of the fitting assembly is protruded with an annular rib embedded in the annular groove; the outer wall of the fitting assembly is a conical wall that fits into the sleeve hole.

[0015] The device further comprises connecting members; the connecting wing is provided with a connecting through-hole; the end of the horizontal support rod is provided with a connecting through-hole corresponding to the connecting through-hole of the connecting wing; the number of the connecting members corresponds to the number of the connecting through-holes, and the connecting members sequentially pass through the connecting through-holes and the connecting through-holes to lock and secure the horizontal support rod and the connecting wing. The connecting members are bolts and nuts.

[0016] The horizontal support rod is a square tube horizontal support rod, and its two ends are extruded to form a concave-shaped closing. The concave-shaped closing of the horizontal support rod is provided with a connecting through-hole corresponding to the connecting through-hole. When the connecting wing is locked and fixed to the horizontal support rod, the connecting wing extends into and abuts the bottom of the concave-shaped closing.

[0017] Two flanges are formed on the upper and lower edges of the connecting wing, so that a "C"-shaped opening is formed on one side of the connecting wing; when the connecting wing is locked and fixed to the horizontal support rod, the "C"-shaped opening faces and extends into the "concave" closing, and the outer side walls of the two flanges elastically press against the upper and lower edges of the "concave" closing respectively; and the connecting piece passes through the connecting through hole and the connecting through hole in sequence, so that the "concave" closing of the connecting wing and the horizontal support rod are tightly fitted and connected.

[0018] The connecting wing is provided with a quick-connect hole or a quick-connect fastener; the ends of the horizontal support rods are provided with quick-connect fasteners or quick-connect holes corresponding to the quick-connect holes or quick-connect fasteners of the connecting wing, which can be quickly assembled and disassembled. The quick-connect hole is a gourd-shaped hole, a teardrop-shaped hole, a vertically long rectangular hole, or a horizontally wide rectangular hole; the corresponding quick-connect fastener is a protruding structure in the shape of a bolt, a bolt, a "7" shape, or a tapered insert; or the quick-connect hole is a plug-in slot, and the corresponding quick-connect fastener is a plug-in tongue.

[0019] The support rod is the bed foot rod, and the horizontal support rod is the crossbeam rod; the connecting sleeve is sleeved on the top of the bed foot rod, and a fitting assembly is provided between the connecting sleeve and the bed foot rod; the top outer wall of the bed foot rod is provided with an annular groove; the fitting assembly includes two semi-sleeves that are movably fitted together; the inner wall of the fitting assembly is movably fitted to the outer wall of the bed foot rod, and the inner wall of the fitting assembly is protruded with an annular rib embedded in the annular groove; the outer wall of the fitting assembly is a conical wall that fits into the sleeve hole; the connecting sleeve is sleeved outside the fitting assembly.

[0020] The connecting wing includes a fixing plate and a connecting plate which are parallel to each other and spaced apart. The inner side of the fixing plate is connected to the outer wall of the connecting sleeve at the top of the bed foot rod. The outer side of the fixing plate and the outer side of the connecting plate are integrally connected through an arc-shaped connecting section. A quick-connect hole is provided on the connecting plate.

[0021] With the above technical solution, the connecting sleeve is an independent structure that can be removably connected to the support rod. Since the connecting sleeve is provided with a connecting tab, the connecting tab can be quickly fastened or locked to the horizontal support rod. Thus, the vertical support rod can be conveniently connected and removed from the horizontal support rod via the connecting sleeve. By providing four support rods, and the connecting sleeve that is mounted on the support rods has two connecting tabs, a horizontal support rod can be conveniently installed between two support rods. The ends of the horizontal support rod are respectively connected to the connecting tabs of the support rods on both sides to form a frame structure. This frame structure can form a storage rack or even a bed frame structure. Compared to existing storage rack structures, it is more convenient to install and remove, and the overall product structure is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a perspective view of a frame structure applied to a first embodiment of the present invention;

[0023] FIG2 is a schematic diagram of a partial structure of Example 1 of the present invention;

[0024] FIG3 is a cross-sectional view of the frame structure of Example 1 of the present invention;

[0025] FIG4 is a schematic diagram of a storage rack according to embodiment 1 of the present invention (I);

[0026] FIG5 is a schematic diagram (II) of the storage rack according to embodiment 1 of the present invention;

[0027] FIG6 is a schematic diagram of a partial structure of Example 2 of the present invention;

[0028] FIG7 is a schematic diagram of a partial structure of Example 3 of the present invention;

[0029] FIG8 is a partial structural perspective view of Example 4 of the present invention;

[0030] FIG9 is a partial structural exploded view of Example 4 of the present invention;

[0031] FIG10 is a partial structural perspective view of Example 5 of the present invention;

[0032] FIG11 is a partial structural exploded view of Example 5 of the present invention;

[0033] FIG12 is a perspective view of a storage rack in accordance with Embodiment 6 of the present invention;

[0034] FIG13 is a partial structural exploded view of Example 6 of the present invention;

[0035] FIG14 is a cross-sectional view of Example 6 of the present invention;

[0036] FIG15 is a partial structural perspective view of Example 7 of the present invention;

[0037] FIG16 is a partial structural exploded view of Example 7 of the present invention;

[0038] FIG17 is a partial structural perspective view of Example 8 of the present invention;

[0039] FIG18 is a partial structural exploded view of Example 8 of the present invention;

[0040] FIG19 is a top view of Example 8 of the present invention;

[0041] FIG20 is a perspective view of a connecting sleeve and a horizontal support rod according to Example 9 of the present invention;

[0042] FIG21 is a perspective view of a connecting sleeve and a horizontal support rod according to embodiment 10 of the present invention;

[0043] FIG22 is a perspective view of a connecting sleeve and a horizontal support rod according to Example 11 of the present invention;

[0044] FIG23 is a schematic diagram of the use of the connecting sleeve of Example 12 of the present invention;

[0045] FIG24 is a schematic diagram of the use of a connecting sleeve according to embodiment 13 of the present invention;

[0046] FIG25 is a schematic diagram showing the use of the connecting sleeve according to embodiment 14 of the present invention.

[0047] FIG26 is a perspective and exploded schematic diagram of a partial structure of Example 15 of the present invention;

[0048] FIG27 is a schematic top view of a partial structure of Example 15 of the present invention. Modes for Carrying Out the Invention

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0050] Example 1

[0051] As shown in FIG. 1 to FIG. 3 , they are schematic diagrams of a rod fixing structure according to the present invention, which is applied to a frame structure 10 .

[0052] The rod fixing structure includes a connecting sleeve 1; the connecting sleeve 1 has a sleeve hole 11 with two ends passing through, and the sleeve hole 11 is a tapered hole that is narrow at the top and wide at the bottom; the outer wall of the connecting sleeve 1 is provided with at least two connecting wings 2; each connecting wing 2 rotates around the center line of the sleeve hole 11 and is distributed on the outer periphery of the connecting sleeve 1 at intervals; a connecting through hole 22 is provided on the connecting wing 2; the connecting sleeve 1 is used to be sleeved on the vertically arranged support rod 5, and the connecting wing 2 is used to be locked and fixed with the horizontal support rod 6 arranged horizontally.

[0053] Hereby, the connecting sleeve 1 is an independent structure and can be detachably connected to the support rod 5. Since the connecting sleeve 1 is provided with a connecting wing 2, and the connecting wing 2 is provided with a connecting through hole 22, the connecting wing 2 and the horizontal support rod 6 can be locked and fixed by means of connecting parts 91 such as screws, bolts a and nuts b. Therefore, the vertical support rod 5 can be conveniently connected to the horizontal support rod 6 by means of the connecting sleeve 1.

[0054] In this way, four support rods 5 can be set up, and the connecting sleeve 1 placed on the support rod 5 has two connecting wings 2, so that a horizontal support rod 6 can be conveniently installed between the two support rods 5, and the two ends of the horizontal support rod 6 are respectively connected to the connecting wings 2 of the support rods 5 on both sides to form a frame structure 10.

[0055] Referring again to Figures 2, 4, and 5, the horizontal support rods 6 may have a "7"-shaped protrusion protruding from their central portions, thereby forming a step 62 on the horizontal support rods 6 after installation. Consequently, the frame structure 10 can be configured as a storage rack 100 by placing a support net 81 (as shown in Figure 4) or a storage board 82 (as shown in Figure 5) on the steps 62 of each horizontal support rod 6. In this embodiment, each step 62 may also be provided with a positioning hole 621 to facilitate placement of the support net 81. Alternatively, a slatted frame (not shown) or a bed board (not shown) may be placed on the steps 62 of each horizontal support rod 6 to form a bed frame. Connecting members 91 are also used to lock and secure the connecting wing 2 and the horizontal support rods 6, making the overall structure of the storage rack or bed frame more stable and reliable.

[0056] As shown in FIG. 2 and FIG. 3 , the rod fixing structure further includes a sleeve assembly 4 .

[0057] The outer wall of the support rod 5 is provided with a plurality of annular slots 51. Thus, when the frame structure 10 is formed into a storage rack, multiple connecting sleeves 1 can be provided on each support rod 5, and each connecting sleeve 1 of the same height can form a storage area in conjunction with the horizontal support rod 6 and the support net 81.

[0058] Moreover, the tapered hole structure of the connecting sleeve 1 also facilitates rapid adjustment of the upper and lower spacings of the supporting nets 81 of the storage rack. For this part, reference may be made to the prior art.

[0059] The nested component 4 includes two semi - bodies 41 that are movably snap - fitted; the inner wall of the nested component 4 is movably fitted to the outer wall of the support rod 5, and an annular rib 42 that is embedded in the annular groove 51 protrudes from the inner wall of the nested component 4; the outer wall of the nested component 4 is a tapered wall that fits into the sleeve hole 11.

[0060] At the end of the horizontal support rod 6, connection through - holes 61 are provided corresponding to the connection through - holes 22 of the connection wing 2; the number of the connecting members 91 corresponds to the number of the connection through - holes 22, and the connecting members 91 pass through the connection through - holes 22 and the connection through - holes 61 in sequence to lock and fix the horizontal support rod 6 and the connection wing 2.

[0061] In this embodiment, two connection through - holes 22 are provided on the connection wing 2, and correspondingly, two connection through - holes 61 distributed vertically are provided at either end of the horizontal support rod 6. The connecting member 91 can be a bolt a and a nut b. After the bolt a passes through the connection through - holes 22 and the connection through - holes 61, the nut b is tightened to achieve detachable locking and fixing of the horizontal support rod 6 and the connection wing 2 on the connection sleeve 1.

[0062] In this embodiment, the horizontal cross - section of the sleeve hole 11 is circular. Since the sleeve hole 11 is a tapered hole, the outer wall of the connection sleeve 1 can be the side surface of a frustum of a cone. Of course, the horizontal cross - section of the sleeve hole 11 can also be oval, triangular or rectangular; as long as the inner wall of the sleeve hole 11 has a taper, the effect of抱紧 the nested component 4 can also be achieved, and the outer wall of the connection sleeve 1 is not limited by the shape of the sleeve hole 11. That is, the connection sleeve 1 can be in the form of the side surface of a cylinder, the side surface of a frustum of a cone or the side surface of a prism. The shape of the cross - section of the sleeve hole 11 and the outer wall of the connection sleeve 1 can be independent of each other. (注:原文中“抱紧”未明确英文,这里保留中文,可根据实际情况替换为合适英文,如“clamping tightly”等)

[0063] In this embodiment, the connection wing 2 is welded and fixed to the outer wall of the connection sleeve 1.

[0064] Embodiment 2

[0065] As shown in FIG. 6, the structure of this embodiment is similar to the above - mentioned embodiment. The main difference is that in this embodiment, the horizontal support rod 6 is taken as an example of a "U" - shaped one and also has a step 62.

[0066] Embodiment 3

[0067] As shown in FIG. 7, the structure of this embodiment is similar to the above - mentioned embodiment. The main difference is that the connection wing 2 in this embodiment is detachably connected to the outer wall of the connection sleeve 1 and can be detachably locked and fixed by a connection screw 23.

[0068] Specifically, four connecting wings 2 are taken as an example, and are respectively perpendicular to the outer wall of the connecting sleeve 1. The inner side edge of the connecting wing 2 is connected to a locking portion 21 that is close to the outer wall of the connecting sleeve 1, and the locking portion 21 is locked and fixed to the outer wall of the connecting sleeve 1. In this embodiment, two connecting wings 2 share one locking portion 21, that is, one connecting wing 2 is connected to each side of a locking portion 21.

[0069] The locking portion 21 may be provided with at least two connection holes 211 spaced apart from each other. A locking hole 12 is provided on the outer wall of the connecting sleeve 1 corresponding to the connection holes 211 , and an internal thread is provided in the locking hole 12 .

[0070] The number of the connecting screws 23 corresponds to the number of the connecting holes 211 , and the connecting screws 23 pass through the connecting holes 211 and are locked in the locking hole 12 , thereby locking and fixing the connecting wing 2 and the connecting sleeve 1 .

[0071] In this embodiment, there are four connecting fins 2, spaced 90 degrees apart on the outer wall of the connecting sleeve 1. This allows the support rod 5 to have connecting fins 2 in all four directions. Thus, the connecting sleeve 1 and the support rod 5 it houses can serve as the intermediate structure for the four racks on the front, back, left, and right sides. This saves on support rods 5 and connecting sleeves 1, while also connecting the four racks into one, improving the rack's stability and enabling its expansion and extension.

[0072] Example 4

[0073] As shown in FIG8 and FIG9 , the structure of this embodiment is similar to that of the above embodiment, with the main difference being that the horizontal support rod 6 in this embodiment is a square tube horizontal support rod 6 to have stronger supporting force and structural strength.

[0074] In addition, both ends of the square tube horizontal support rod 6 are squeezed to form a "concave" closure 63; the "concave" closure 63 of the horizontal support rod 6 is provided with the connecting through hole 61 corresponding to the connecting through hole 22.

[0075] Thus, when the connecting wing 2 is locked and fixed to the horizontal support rod 6 , the connecting wing 2 extends into and adheres to the bottom of the “concave” closure 63 .

[0076] In this embodiment, the connecting wing 2 is provided with two horizontally spaced connecting through holes 22, and the corresponding connecting through holes 61 in the concave opening 63 are also horizontally spaced. Inserting the connecting wing 2 into the concave opening 63 can achieve a tighter connection between the two while maintaining an aesthetically pleasing appearance.

[0077] Example 5

[0078] As shown in FIG10 and FIG11 , the structure of this embodiment is substantially the same as that of the above-mentioned embodiment, with the main difference being that the horizontal support rod 6 in this embodiment is a square tube horizontal support rod 6 to provide stronger supporting force and structural strength.

[0079] In addition, both ends of the square tube horizontal support rod 6 are squeezed to form a "concave" closure 63; the "concave" closure 63 of the horizontal support rod 6 is provided with the connecting through hole 61 corresponding to the connecting through hole 22.

[0080] Two flanges 24 are formed on the upper and lower edges of the connecting wing 2, so that a "C"-shaped opening is formed on one side of the connecting wing 2; when the connecting wing 2 is locked and fixed to the horizontal support rod 6, the "C"-shaped opening faces and extends into the "concave"-shaped closing 63, and the outer side walls of the two flanges 24 elastically press against the upper and lower edges of the "concave"-shaped closing 63 respectively; and the connecting piece 91 passes through the connecting through hole 22 and the connecting through hole 61 in sequence, so that the connecting wing 2 and the "concave"-shaped closing 63 of the horizontal support rod 6 are tightly fitted and connected.

[0081] Moreover, when the connecting member 91 adopts bolt a and nut b, the tight fit between the connecting wing 2 and the horizontal support rod 6 can also provide a reaction force to the bolt a and nut b, preventing the nut b and the bolt a from loosening and separating from each other, thereby improving the connection stability of the connecting wing 2 and the horizontal support rod 6.

[0082] Example 6

[0083] As shown in FIG. 12 to FIG. 14 , there are schematic diagrams of a rod fixing structure according to this embodiment, which is applied to a storage rack 100 .

[0084] The rod fixing structure also includes a connecting sleeve 1; the connecting sleeve 1 has a sleeve hole 11 that passes through both ends, and the sleeve hole 11 is a tapered hole that is narrow at the top and wide at the bottom, that is, the inner wall of the tapered hole has a certain taper; the outer wall of the connecting sleeve 1 is provided with at least two connecting wings 2; each connecting wing 2 rotates around the center line of the sleeve hole 11 and is distributed at intervals on the outer periphery of the connecting sleeve 1; the connecting wing 2 of this embodiment is provided with a quick-connect hole 31.

[0085] By this, the connecting sleeve 1 is an independent structure, which can be pre-matched with the following sleeve assembly 4 and the support rod 5 for detachable connection. Since the connecting sleeve 1 is provided with a connecting wing 2, and the connecting wing 2 is provided with a quick-connect hole 31, the quick-connect fastener 32 provided with the horizontal support rod 6 can also be quickly matched and connected to the connecting wing 2. Please refer to Figure 12 for details. Through four support rods 5 and four connecting sleeves 1, each connecting sleeve 1 has two connecting wings 2, which respectively match the four horizontal support rods 6. At the same time, an independent support net 81 or partition can be installed between each horizontal support rod 6, thereby forming a complete storage rack 100 structure. That is, the use of this connecting sleeve 1 can make the installation operation of the corresponding storage rack 100 structure simple and quick.

[0086] As shown in Figures 12 and 13, the rod fixing structure also includes a support rod 5, a sleeve assembly 4 and a horizontal support rod 6. Two connecting wings 2 are provided on the outside of the connecting sleeve 1. The two connecting wings 2 are spaced 90 degrees apart, that is, they are arranged perpendicular to each other.

[0087] The support rod 5 and the sleeve assembly 4 can adopt existing structures. Specifically, the outer wall of the support rod 5 is provided with a plurality of annular grooves 51 at intervals above and below; the sleeve assembly 4 includes two half-sleeves 41 that are movably engaged with each other; the inner wall of the sleeve assembly 4 is movably engaged with the outer wall of the support rod 5, and the inner wall of the sleeve assembly 4 is provided with an annular rib 42 that is engaged with the annular grooves 51; the outer wall of the sleeve assembly 4 is a conical wall that is engaged with the sleeve hole 11; thereby, the two half-sleeves 41 are engaged with each other on the support rod 5, and the annular ribs 42 pairs of annular grooves 51 are located at selected positions of the support rod 5, referring to FIG3 . When the connecting sleeve 1 is placed on the periphery of the support rod 5 and the sleeve assembly 4 from top to bottom, the tapered hole 11 of the connecting sleeve 1 will squeeze the sleeve assembly 4 downward under the action of downward gravity or pressure, so that the outer wall of the sleeve assembly 4 is compressed to form an inward clamping force, so that the more the connecting sleeve 1 is pressed downward, the tighter the sleeve assembly 4 clamps the support rod 5, thereby making the connecting sleeve 1 and the support rod 5 adjustable and stably connected and fixed.

[0088] The ends of the horizontal support rods 6 are provided with quick-connect fasteners 32 corresponding to the quick-connect holes 31 of the connecting wing pieces 2, allowing for quick assembly and disassembly. In this embodiment, the quick-connect holes 31 of the connecting wing pieces 2 are gourd-shaped, with two gourd-shaped holes spaced apart vertically on the connecting wing pieces 2. The corresponding quick-connect fasteners 32 of the horizontal support rods 6 are bolt-shaped, with the bolt-shaped heads snap-fitting into the gourd-shaped holes for quick assembly and disassembly, effectively improving the speed and convenience of installing the connecting sleeve 1 and the horizontal support rods 6.

[0089] As shown in FIG13 , the horizontal cross-section of the sleeve hole 11 of this embodiment may be circular, and the outer wall of the connecting sleeve 1 may be a frustum side or a cylindrical side; and the connecting wing 2 may be welded and fixed to the outer wall of the connecting sleeve 1 .

[0090] Example 7

[0091] As shown in FIG. 15 and FIG. 16 , the structure of this embodiment is similar to that of the above-mentioned embodiment, with the main difference being that the connecting wing 2 of this embodiment is detachably connected to the connecting sleeve 1 .

[0092] The connecting wing 2 can be perpendicular to the outer wall of the connecting sleeve 1 , and the inner side of the connecting wing 2 is connected to a locking portion 21 that is close to the outer wall of the connecting sleeve 1 ; the locking portion 21 is locked and fixed to the outer wall of the connecting sleeve 1 .

[0093] Specifically, it also includes a connecting screw (not shown); the locking portion 21 is provided with at least two connecting holes 211 spaced vertically apart; the outer wall of the connecting sleeve 1 is provided with a locking hole 12 corresponding to the connecting holes 211, and the locking hole 12 is internally threaded; the connecting screw is locked with the connecting hole 211 and the locking hole 12. By providing detachable connecting wings 2, the number of connecting wings 2 on the outer side of the connecting sleeve 1 can be increased or decreased according to actual needs, thereby allowing each shelf 100 to be extended horizontally and vertically, effectively improving the practicality of the connecting sleeve 1.

[0094] For example, as shown in FIG15 , the number of the connecting wings 2 can be four, which are distributed on the outer wall of the connecting sleeve 1 at 90 degrees intervals from each other. Thus, the connecting sleeve 1 and the sleeved support rod 5 can serve as the intermediate structure of the four front, rear, left and right storage racks 100. While saving the support rod 5 and the connecting sleeve 1, the four storage racks 100 are connected as one, thereby improving the stability of the storage rack 100 itself.

[0095] In this embodiment, the locking portion 21 is connected to one connecting wing 2 on each side along the circumference of the connecting sleeve 1. Thus, the two connecting wings 2 sharing the locking portion 21 can be fixed with one locking, making the installation operation more convenient.

[0096] Of course, each locking portion 21 may also be independently connected to a connecting wing 2 , that is, the four connecting wings 2 each have an independent locking portion 21 .

[0097] Example 8

[0098] As shown in FIG. 17 to FIG. 19 , the structure of this embodiment is similar to that of the above-mentioned embodiment. The connecting wing 2 of this embodiment is also detachably connected to the connecting sleeve 1 .

[0099] The connecting wing 2 of this embodiment includes a first side plate 25 and a second side plate 26 that are spaced apart and parallel to each other. The first side plate 25 and the second side plate 26 are both provided with a quick-connect hole 31 or a quick-connect fastener 32 .

[0100] The locking portion 21 is located between the inner sides of the first side plate 25 and the second side plate 26. The locking portion 21 is locked against the outer wall of the connecting sleeve 1.

[0101] Specifically, it also includes a connecting screw (not shown in the figure); the locking portion 21 is provided with at least two connecting holes 211 spaced apart from each other in an upper and lower direction; a locking hole 12 is provided on the outer wall of the connecting sleeve 1 corresponding to the connecting hole 211, and an internal thread is provided in the locking hole 12; in this embodiment, a reinforcing plate 27 is connected between the outer edges of the first side plate 25 and the second side plate 26 to enhance the structural stability of the first side plate 25 and the second side plate 26; a clearance hole 271 is provided on the reinforcing plate 27 corresponding to the connecting hole 211; the connecting screw passes through the clearance hole 271 and is locked and fixed with the connecting hole 211 and the locking hole 12.

[0102] A gap is formed between the first side panel 25 and the second side panel 26. Thus, when the quick-connect fastener 32 of the horizontal support rod 6 is inserted into the quick-connect hole 31 of the first side panel 25 or the second side panel 26, it can be hidden in the gap, avoiding accidental scratch damage caused by the protruding quick-connect fastener 32 being exposed.

[0103] Example 9

[0104] As shown in FIG. 20 , the structure of this embodiment is similar to that of the above embodiment, with the main difference being that the quick-connect hole 31 is a vertically long rectangular hole, and the corresponding quick-connect fastener 32 is a “7”-shaped protruding structure.

[0105] Example 10

[0106] As shown in FIG. 21 , the structure of this embodiment is similar to that of the above embodiment, with the main difference being that the quick-connect hole 31 is a horizontally wide rectangular hole, and the corresponding quick-connect fastener 32 is a tapered insert-shaped protruding structure.

[0107] Example 11

[0108] As shown in FIG22 , the structure of this embodiment is similar to that of the above embodiment, with the main difference being that the quick-connect hole 31 is a plug-in slot, and the corresponding quick-connect fastener 32 is a plug-in tongue. When the two are plugged into each other, they provide a good fastening effect.

[0109] In summary, the present invention, by providing a connecting sleeve 1 with a connecting tab 2, facilitates the rapid assembly and disassembly of assembled products with pipe fittings, such as a storage rack 100, thereby improving product installation efficiency and enhancing the user experience. The connecting tab 2 is provided with a quick-connect hole 31, while the horizontal support rod 6 is provided with a quick-connect fastener 32. Of course, the two can also be reversed to achieve a quick-disassembly and quick-assembly connection.

[0110] The quick-connect hole 31 may also be a teardrop-shaped hole, and the quick-connect fastener 32 corresponding to the teardrop-shaped hole may be a bolt-shaped protruding structure.

[0111] Example 12

[0112] As shown in FIG. 23 , the structure of this embodiment is similar to that of the above embodiment, with the main difference being that the connecting sleeve 1 can be a split structure.

[0113] Specifically, the connecting sleeve 1 includes a first arc piece 13 and a second arc piece 14 that can be interlocked with each other in the radial direction and can be detachably locked together. The sleeve hole 11 is formed between the interlocked first arc piece 13 and the second arc piece 14.

[0114] A connecting lock hole 153 is respectively provided on the two circumferential edges 15 of the first arc piece 13 and the second arc piece 14, which passes through the circumferential end surface 151 and the edge arc surface 152 of the circumferential edge 15. When the first arc piece 13 and the second arc piece 14 are engaged with each other, the connecting lock holes 153 on the mutually docking circumferential edges 15 are aligned with each other, and then a locking screw 92 is respectively inserted into the two aligned connecting lock holes 153 to lock and fix them, so that the first arc piece 13 and the second arc piece 14 can be firmly locked together.

[0115] Among them, the connecting lock hole 153 on the first arc piece 13 is provided with an internal thread, while the connecting lock hole 153 on the second arc piece 14 is a smooth hole and the side close to the edge arc surface 152 is a recessed groove for the screw head of the locking wire 92 to limit the position, and to make the first arc piece 13 and the second arc piece 14 more tightly connected.

[0116] The two connecting wings 2 of the connecting sleeve 1 of this embodiment can be provided on the first arc piece 13 or the second arc piece 14 .

[0117] In this way, the connecting sleeve 1 is set to a detachable structure, so that when a new support net 81 needs to be added between the two existing support nets 81 of the storage rack 100, there is no need to remove the upper support net 81. It is only necessary to split the connecting sleeve 1, fit the first arc piece 13 and the second arc piece 14 to the outer periphery of the two half sleeves 41 of the support rod 5, and then tighten the locking screw 92 to achieve the socket connection between the connecting sleeve 1 and the support rod 5, and then use the connecting wings 2 to quickly connect the horizontal support rods 6 to achieve the installation of the new support net 81.

[0118] In this embodiment, one connecting lock hole 153 is provided in the middle of each circumferential edge 15 . Of course, a plurality of connecting lock holes 153 may be provided at intervals along the axial direction to enhance the locking effect of the first arc piece 13 and the second arc piece 14 .

[0119] Example 13

[0120] As shown in FIG. 24 , the structure of this embodiment is similar to that of the above embodiment, with the main difference being that the connecting sleeve 1 can be a split structure.

[0121] Specifically, the connecting sleeve 1 includes a first arc piece 13 and a second arc piece 14 that can be interlocked with each other in the radial direction and can be detachably locked together. The sleeve hole 11 is formed between the interlocked first arc piece 13 and the second arc piece 14.

[0122] Two axially spaced locking blocks 154 are circumferentially extended and protruded on one circumferential edge 15 of the first arc piece 13 and the second arc piece 14, and two axially spaced locking grooves 155 are recessed on the other circumferential edge 15 of the first arc piece 13 and the second arc piece 14. At the same time, two axial end faces 16 of the first arc piece 13 and the second arc piece 14 are respectively provided with locking through holes 161 axially connected to the locking grooves 155. When the first arc piece 13 and the second arc piece 14 are buckled together, the locking blocks 154 of the first arc piece 13 are embedded in the locking grooves 155 of the second arc piece 14, and the locking blocks 154 of the second arc piece 14 are correspondingly embedded in the locking grooves 155 of the first arc piece 13. Moreover, each locking block 154 is provided with a locking bottom hole 1541 corresponding to each locking through hole 161. Then, four locking screws 92 are passed through the locking through holes 161 and locked in the locking bottom holes 1541, so that the first arc piece 13 and the second arc piece 14 can be butt-locked and fixed.

[0123] In this way, the connecting sleeve 1 is set to a detachable structure, so that when a new support net 81 needs to be added between the two existing support nets 81 of the storage rack 100, there is no need to remove the upper support net 81. It is only necessary to split the connecting sleeve 1, fit the first arc piece 13 and the second arc piece 14 to the outer periphery of the two half sleeves 41 of the support rod 5, and then tighten the locking screw 92 to achieve the socket connection between the connecting sleeve 1 and the support rod 5, and then use the connecting wings 2 to quickly connect the horizontal support rods 6 to achieve the installation of the new support net 81.

[0124] In this embodiment, two locking blocks 154 or two locking grooves 155 are provided on each circumferential edge 15. Of course, only one locking groove 155 and locking block 154 can be provided, and one corresponding locking through hole 161 can also be provided, which can also realize the locking and fixation of the first arc piece 13 and the second arc piece 14.

[0125] Example 14

[0126] As shown in FIG. 25 , the structure of this embodiment is similar to that of the above-mentioned embodiment 1, with the main difference being that the connecting sleeve 1 can be a split structure.

[0127] The connecting sleeve 1 includes a first arc piece 13 and a second arc piece 14 that can be radially interlocked with each other. After interlocking, any end surface of the first arc piece 13 and the second arc piece 14 is locked with two semi-ring locking pieces 17, and the sleeve hole 11 is formed between the first arc piece 13 and the second arc piece 14.

[0128] The two circumferentially distributed locking piece connecting portions 171 on the semi-ring locking piece 17 are respectively fitted with the end surfaces of the first arc piece 13 and the second arc piece 14. At the same time, a locking piece through hole 172 is provided on the locking piece connecting portion 171, and the end surfaces of the first arc piece 13 and the second arc piece 14 are respectively provided with arc piece locking holes 18 corresponding to the locking piece through holes 172. Fasteners 19 such as screws can be passed through the locking piece through holes 172 and locked into the arc piece locking holes 18, so that the semi-ring locking piece 17 is respectively locked and fixed to the first arc piece 13 and the second arc piece 14.

[0129] The first arc piece 13 and the second arc piece 14 can be locked at one end by two semi-ring locking pieces 17. Thus, a total of four semi-ring locking pieces 17 are provided on the upper and lower end surfaces of the first arc piece 13 and the second arc piece 14, so that the first arc piece 13 and the second arc piece 14 can be fixed by snapping together to form the connecting sleeve 1 structure.

[0130] The two connecting wings 2 of the connecting sleeve 1 of this embodiment can be provided on the first arc piece 13 or the second arc piece 14 .

[0131] In this way, the connecting sleeve 1 is set to a detachable structure, so that when a new support net 81 needs to be added between the two existing support nets 81 of the storage rack 100, there is no need to remove the upper support net 81. It is only necessary to disassemble the connecting sleeve 1, fit the first arc piece 13 and the second arc piece 14 to the outer periphery of the two half sleeves 41 of the support rod 5, and then lock the four half-ring locking pieces 17 to achieve the socket connection between the connecting sleeve 1 and the support rod 5. Then, the new support net 81 can be installed by quickly connecting the connecting wings 2 to the horizontal support rods 6.

[0132] Example 15

[0133] As shown in FIG. 26 and FIG. 27 , the structure of this embodiment is similar to that of the above-mentioned embodiment, with the main difference being that the rod fixing structure of this embodiment is applied to the bed frame.

[0134] Let the support rod 5 be the bed foot rod 52, and the horizontal support rod 6 be the crossbeam rod 64;

[0135] The top of the bed foot rod 52 can be sleeved with a connecting sleeve 1, and a sleeve assembly 4 is provided between the connecting sleeve 1 and the bed foot rod 52.

[0136] By providing the connecting sleeve 1 , the top of the bed foot rod 52 is exposed, and can be connected to a headboard structure or a footboard structure (not shown).

[0137] Under the action of gravity or the pressure of the crossbeam 64, the connecting sleeve 1 will squeeze the sleeve assembly 4 downward, and the outer wall of the sleeve assembly 4 is squeezed by the tapered hole while the inner wall squeezes the bed foot rod 52 inward, so that the annular rib 42 fits tightly in the annular groove 51, ensuring the stability of the connection between the connecting sleeve 1 and the bed foot rod 52.

[0138] Thus, a bed frame employing this solution requires no tools during assembly. Users can simply and easily connect the foot bars 52 and crossbars 64 by hand using the quick-connect holes 31 and fasteners 32, making installation of the bed frame simple and hassle-free, allowing for easy, user-friendly assembly. A slatted frame or rib rods (not shown) are then placed between the crossbars 64, followed by a mattress (not shown). The weight of the mattress compresses the foot bars 52 and crossbars 64, preventing them from separating.

[0139] The connecting wing 2 of this embodiment includes a fixing piece 28 and a connecting piece 29 which are parallel to each other and spaced apart. The inner side of the fixing piece 28 is connected to the top of the bed foot rod 52 and can be fixed by welding.

[0140] The outer side of the fixing piece 28 and the outer side of the connecting piece 29 are integrally connected via an arc-shaped connecting section 30. Specifically, the fixing piece 28 and the connecting piece 29 can be formed by bending a whole plate-like structure.

[0141] The connecting piece 29 is provided with a quick-connect hole 31 of the quick-connect assembly 4. Therefore, when the quick-connect fastener 32 correspondingly provided at the end of the crossbeam 64 is buckled into the quick-connect hole 31, it can be shielded and concealed by the fixing piece 28, thereby ensuring the beauty of the product while preventing the protruding quick-connect fastener 32 from scratching the user and causing injury, etc.

Claims

1. A rod fixing structure, characterized in that: It includes a connecting sleeve; the connecting sleeve has a sleeve hole with two ends passing through, and the sleeve hole is a tapered hole that is narrow at the top and wide at the bottom; the outer wall of the connecting sleeve is provided with at least two connecting wings; each connecting wing rotates around the center line of the sleeve hole and is distributed on the outer periphery of the connecting sleeve at intervals; the connecting sleeve is used to be sleeved on the vertically arranged support rod, and the connecting wing is used to lock or clamp with the horizontal support rod.

2. The rod fixing structure according to claim 1, characterized in that: The horizontal cross-section of the sleeve hole is circular, elliptical, triangular or rectangular; the outer wall of the connecting sleeve is a cylindrical side, a frustum side or a prism side.

3. The rod fixing structure according to claim 1, characterized in that: The connecting fins are welded and fixed to the outer wall of the connecting sleeve.

4. The rod fixing structure according to claim 1, characterized in that: The connecting wing is perpendicular to the outer wall of the connecting sleeve. The inner side of the connecting wing is connected to a locking portion that is close to the outer wall of the connecting sleeve, and the locking portion is locked and fixed to the outer wall of the connecting sleeve.

5. The rod fixing structure according to claim 4, characterized in that: It also includes connecting screws; the locking part is provided with at least two connecting holes spaced apart up and down; the outer wall of the connecting sleeve is provided with locking holes corresponding to the connecting holes, and the locking holes are provided with internal threads; the number of connecting screws corresponds to the number of connecting holes, and they pass through the connecting holes and are locked in the locking holes to lock and fix the connecting wing and the connecting sleeve.

6. The rod fixing structure according to claim 5, characterized in that: The connecting wing includes a first side panel and a second side panel that are spaced apart and parallel to each other, and the locking portion is between the inner side edges of the first side panel and the second side panel; the first side panel and the second side panel are both provided with the quick-connect holes or quick-connect fasteners; a reinforcing plate is connected between the outer sides of the first side panel and the second side panel; a clearance hole is provided on the reinforcing plate corresponding to the connecting hole; the connecting screw passes through the clearance hole and is locked with the connecting hole and the lock hole.

7. The rod fixing structure according to claim 1, characterized in that: There are two to four connecting wings, which are distributed on the outer wall of the connecting sleeve at 90-degree intervals.

8. The rod fixing structure according to claim 1, characterized in that: The connecting sleeve is a split structure, including a first arc piece and a second arc piece that are interlocked with each other in the radial direction and can be detachably locked together, and the sleeve hole is formed between the interlocked first arc piece and the second arc piece.

9. The rod fixing structure according to claim 8, characterized in that: At least one connecting lock hole is respectively provided on the two circumferential edges of the first arc piece and the second arc piece, and the connecting lock hole passes through the circumferential end surface and the edge arc surface of the circumferential edge. When the first arc piece and the second arc piece are buckled and engaged with each other, the connecting lock holes on the mutually docking circumferential edges are aligned with each other, and a locking screw is movably inserted into each of the aligned connecting lock holes to lock and fix them.

10. The rod fixing structure according to claim 8, characterized in that: At least one locking block is circumferentially extended and protruded on one of the circumferential edges of the first arc piece and the second arc piece, and at least one locking groove is recessed on the other circumferential edge of the first arc piece and the second arc piece. At the same time, locking through holes are respectively provided on the axial end faces of the first arc piece and the second arc piece corresponding to the locking grooves, and the locking through holes are provided with axially connected locking grooves; when the first arc piece and the second arc piece are buckled and engaged, the locking block of the first arc piece is embedded in the locking groove of the second arc piece, and the locking block of the second arc piece is correspondingly embedded in the locking groove of the first arc piece, and each locking block is respectively provided with a locking bottom hole corresponding to each locking through hole, and locking screws are movably locked in the corresponding locking through holes and locking bottom holes.

11. The rod fixing structure according to claim 8, characterized in that: After buckling, any one end face of the first arc piece and the second arc piece is locked and fixed by two semi-ring locking pieces; the two locking piece connecting parts distributed circumferentially on the semi-ring locking piece are respectively fitted with the end faces of the first arc piece and the second arc piece, and at the same time, a locking piece through hole is provided on the locking piece connecting part, and the end faces of the first arc piece and the second arc piece are respectively provided with arc piece locking holes corresponding to the locking piece through holes. The fastener passes through the locking piece through hole and is locked into the arc piece locking hole, so that the semi-ring locking piece is respectively locked and fixed with the first arc piece and the second arc piece.

12. The rod fixing structure according to claim 1, characterized in that: It also includes a fitting assembly; an annular groove is provided on the outer wall of the support rod; the fitting assembly includes two half-sleeves that are movably snap-fitted; the inner wall of the fitting assembly is movably fitted to the outer wall of the support rod, and the inner wall of the fitting assembly is protruded with an annular rib embedded in the annular groove; the outer wall of the fitting assembly is a conical wall that fits into the sleeve hole.

13. The rod fixing structure according to claim 1, characterized in that: It also includes a connecting piece; a connecting through-hole is provided on the connecting wing; a connecting through-hole is provided at the end of the horizontal support rod corresponding to the connecting through-hole of the connecting wing; the number of the connecting pieces corresponds to the number of the connecting through-holes, and the connecting piece passes through the connecting through-holes and the connecting through-holes in sequence to lock and fix the horizontal support rod and the connecting wing.

14. The rod fixing structure according to claim 13, characterized in that: The horizontal support rod is a square tube horizontal support rod, and both ends of the square tube horizontal support rod are respectively extruded to form a "concave" closure; the "concave" closure of the horizontal support rod is provided with the connecting through hole corresponding to the connecting through hole.

15. The rod fixing structure according to claim 14, characterized in that: When the connecting wing is locked and fixed with the horizontal support rod, the connecting wing extends into and is tightly attached to the bottom of the "concave" closure.

16. The rod fixing structure according to claim 14, characterized in that: Two flanges are formed on the upper and lower edges of the connecting wing, so that a "C"-shaped opening is formed on one side of the connecting wing; when the connecting wing is locked and fixed to the horizontal support rod, the "C"-shaped opening faces and extends into the "concave"-shaped closing, and the outer side walls of the two flanges elastically press against the upper and lower edges of the "concave"-shaped closing respectively; and the connecting piece passes through the connecting through hole and the connecting through hole in sequence, so that the "concave"-shaped closing of the connecting wing and the horizontal support rod are tightly fitted and connected.

17. The rod fixing structure according to claim 1, characterized in that: The connecting wing is provided with a quick-connect hole or a quick-connect fastener; the end of the horizontal support rod is provided with a quick-connect fastener or a quick-connect hole that can be quickly disassembled and assembled with each other, corresponding to the quick-connect hole or quick-connect fastener of the connecting wing.

18. The rod fixing structure according to claim 17, characterized in that: The quick-connect hole is a gourd-shaped hole, a teardrop-shaped hole, a vertically long rectangular hole or a horizontally wide rectangular hole; the corresponding quick-connect fastener is a protruding structure in the shape of a bolt, a bolt, a "7" shape or a conical insert; or the quick-connect hole is a plug-in slot, and the corresponding quick-connect fastener is a plug-in tongue.

19. The rod fixing structure according to claim 17, characterized in that: The support rod is the bed foot rod, and the horizontal support rod is the crossbeam rod; the connecting sleeve is sleeved on the top of the bed foot rod, and a fitting assembly is provided between the connecting sleeve and the bed foot rod; the top outer wall of the bed foot rod is provided with an annular groove; the fitting assembly includes two semi-sleeves that are movably fitted together; the inner wall of the fitting assembly is movably fitted to the outer wall of the bed foot rod, and the inner wall of the fitting assembly is protruded with an annular rib embedded in the annular groove; the outer wall of the fitting assembly is a conical wall that fits into the sleeve hole; the connecting sleeve is sleeved outside the fitting assembly.

20. The rod fixing structure according to claim 19, characterized in that: The connecting wing includes a fixing plate and a connecting plate which are parallel to each other and spaced apart. The inner side of the fixing plate is connected to the outer wall of the connecting sleeve at the top of the bed foot rod. The outer side of the fixing plate and the outer side of the connecting plate are integrally connected through an arc-shaped connecting section. A quick-connect hole is provided on the connecting plate.

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