Hollow rod connecting device

Abstract

The utility model provides a hollow rod connecting device which comprises a first inner supporting piece, a second inner supporting piece and a locking screw rod, the second inner supporting piece and the first inner supporting piece are oppositely arranged, the locking screw rod penetrates through the first inner supporting piece, one end of the locking screw rod can be in contact with the second inner supporting piece, and the other end of the locking screw rod can be in contact with the second inner supporting piece. The locking screw rod is in threaded connection with the first inner supporting piece; and the locking screw rod can rotate under stress, so that the second inner supporting piece and the first inner supporting piece are far away from each other or close to each other. The connecting stability of the hollow rod can be improved.

Description

Technical Field

[0001] The utility model relates to a connecting device, in particular to a hollow rod connecting device. Background Art

[0002] A hollow rod is a rod-shaped object with a cavity inside, which has characteristics such as being light and strong, and plays an important role in the field of daily necessities such as clothes hangers. According to different needs of users, some clothes hangers need to use hollow rods with a larger length. For the convenience of transportation or manufacturing, usually, multiple shorter hollow rods are connected and assembled into a longer rod for use. In the prior art, two hollow rods are usually connected by a snap button. For example, the publication number CN206239051U discloses a load-bearing clothes hanger, and the mounting frame of its base includes a connecting pipe and an inserting pipe. The connecting pipe has a receiving end, and the inserting pipe has a coupling part; a locking hole is provided on the receiving end, and a snap button is installed at a position corresponding to the locking hole of the receiving end on the coupling part. When connecting, the coupling part is inserted into the receiving end, and the snap button is fixed in the locking hole of the receiving end by pushing, so that the receiving end and the coupling part are matched and installed, and the connecting pipe and the inserting pipe can be connected together. However, for the convenience of inserting the coupling part into the receiving end, generally, there is a large gap between the coupling part and the receiving end, and its stability of the connected hollow rod is poor only relying on the support of the snap button after insertion, resulting in the connected hollow rod being prone to shaking. Summary of the Invention

[0003] The utility model aims to solve the above-mentioned technical problems and provides a hollow rod connecting device capable of improving connection stability.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] A hollow rod connecting device includes a first inner support member, a second inner support member and a locking screw. The second inner support member is arranged opposite to the first inner support member. The locking screw passes through the first inner support member and one end thereof can contact the second inner support member. The locking screw is threadedly connected with the first inner support member; the locking screw can rotate self-driven under force, so that the second inner support member and the first inner support member move away from or close to each other.

[0006] Furthermore, limiting flanges are convexly provided on the outer peripheral walls of the first inner support member and the second inner support member. The first inner support member and the second inner support member are separated into two insertion parts by the corresponding limiting flanges. The two insertion parts are respectively used for being inserted into the hollow cavities of two hollow rods.

[0007] Furthermore, the height of the limiting flange protruding from the outer peripheral wall is equal to the wall thickness of the hollow rod.

[0008] Further, a positioning hole is recessed in the side surface of the second inner support member facing the first inner support member, and one end of the locking screw is movably inserted into the positioning hole.

[0009] Further, both the first inner support member and the second inner support member include a support plate and a reinforcing block. A receiving cavity is provided on one side of the support plate facing the other support plate. The reinforcing block is fixedly connected to the inner wall of the receiving cavity, and the positioning hole is provided on the corresponding reinforcing block; a limiting flange is protruded on the outer peripheral wall of the support plate.

[0010] Further, a threaded hole is provided on the first inner support member corresponding to the locking screw. The threaded hole sequentially penetrates through the corresponding limiting flange, the support plate and the reinforcing block, and the locking screw is threadedly connected to the threaded hole.

[0011] Further, when the second inner support member and the first inner support member are in a state of being away from each other, the end of the locking screw away from the second inner support member is received in the threaded hole.

[0012] Further, both the first inner support member and the second inner support member include stiffening plates, and the stiffening plates are fixedly connected to the reinforcing block and the inner wall of the receiving cavity.

[0013] Further, the support plate is an arc-shaped plate, and the protruding directions of the two support plates are opposite. The support plates enclose to form the receiving cavity with both ends open; the support plate further includes two end plates, and the two end plates are respectively fixed at both ends of the support plate.

[0014] Further, a wrench opening is further provided at the end of the locking screw away from the second inner support member.

[0015] Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0016] When the above hollow rod connecting device is in use, the opposite ends of the first inner support member are respectively inserted into the hollow cavities of the two hollow rods, and the opposite ends of the second inner support member are respectively inserted into the hollow cavities of the two hollow rods. The locking screw is rotated to make the second inner support member and the first inner support member move away from each other, so that the second inner support member and the first inner support member respectively abut against the opposite sides of the inner wall of the hollow rod, and thus the two hollow rods to be connected can be quickly connected. And by the second inner support member and the first inner support member respectively abutting against the opposite sides of the inner wall of the hollow rod, compared with the elastic buckle in the prior art, the contact area between the second inner support member, the first inner support member and the hollow rod is increased, and further the connection is more stable, and the connected hollow rod is not easy to shake. Description of the Drawings

[0017] Figure 1Structural schematic diagram of the hollow rod connection device according to a preferred embodiment of the present utility model;

[0018] Figure 2 is Figure 1 Structural schematic diagram of the first inner support member in the shown hollow rod connection device;

[0019] Figure 3 is Figure 2 Structural diagram from another perspective;

[0020] Figure 4 is Figure 1 Structural schematic diagram of the second inner support member in the shown hollow rod connection device;

[0021] Figure 5 is Figure 4 Structural diagram from another perspective;

[0022] Figure 6 is Figure 1 Cross-sectional structural schematic diagram of the shown hollow rod connection device along the longitudinal section;

[0023] Figure 7 is Figure 6 Structural schematic diagram of the shown hollow rod connection device in another usage state;

[0024] Figure 8 is Figure 7 Usage state schematic diagram of the shown hollow rod connection device;

[0025] In the drawings, 100, hollow rod connection device; 11, first inner support member; 110, screw hole; 12, second inner support member; 120, positioning hole; 13, support plate; 130, receiving cavity; 132, insertion part; 14, reinforcing block; 15, end plate; 16, stiffening plate; 17, limiting flange; 50, locking screw; 51, wrench opening; 200, hollow rod; 210, hollow cavity. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] Please refer to Figure 1 and Figure 8 , a hollow rod connecting device 100 provided by a preferred embodiment of the present utility model is used to connect two hollow rods 200 having a hollow cavity 210. In this embodiment, the hollow rod 200 is generally in a hollow cylindrical structure. The hollow rod connecting device 100 includes a first inner support member 11, a second inner support member 12 and a locking screw 50. The second inner support member 12 is disposed opposite to the first inner support member 11. The locking screw 50 passes through the first inner support member 11 and one end thereof can contact the second inner support member 12. The locking screw 50 is threadedly connected to the first inner support member 11. The locking screw 50 can rotate under force so that the second inner support member 12 and the first inner support member 11 move away from or approach each other.

[0030] Please refer to together Figure 2 and Figure 3, the opposite ends of the first inner support member 11 are respectively adapted to be inserted into the hollow cavities 210 of the two hollow rods 200. The first inner support member 11 is generally in the structure of a hollow semi-cylindrical body. Specifically, the first inner support member 11 includes a support plate 13 and a reinforcing block 14. A receiving cavity 130 is provided on the side of the support plate 13 facing the second inner support member 12. In this embodiment, the support plate 13 of the first inner support member 11 is an arc-shaped plate protruding away from the second inner support member 12, and the shape of the outer peripheral wall of the support plate 13 of the first inner support member 11 matches the inner wall of the hollow cavity 210 of the hollow rod 200. The arc-shaped support plate 13 encloses to form the receiving cavity 130 with two open ends. The reinforcing block 14 is fixedly connected to the inner wall of the receiving cavity 130. The first inner support member 11 further includes two end plates 15 and two stiffening plates 16. Among them, the two end plates 15 are respectively fixed to the two ends of the support plate 13; in this embodiment, the end plates 15 and the support plate 13 are connected by a fillet transition to make it easier to insert the first inner support member 11 into the hollow rod 200. The two stiffening plates 16 are respectively arranged on the opposite sides of the reinforcing block 14, and each stiffening plate 16 is fixedly connected to the reinforcing block 14 and the inner wall of the receiving cavity 130.

[0031] A limiting flange 17 is further protruded on the outer peripheral wall of the support plate 13 of the first inner support member 11. The support plate 13 of the first inner support member 11 is separated into two insertion parts 132 by the limiting flange 17, and the two insertion parts 132 are respectively adapted to be inserted into the hollow cavities 210 of the two hollow rods 200. In this embodiment, the height that the limiting flange 17 protrudes from the outer peripheral wall of the support plate 13 is equal to the wall thickness of the hollow rod 200.

[0032] A screw hole 110 corresponding to the locking screw 50 is provided on the first inner support member 11. In this embodiment, the screw hole 110 sequentially penetrates through the limiting flange 17, the support plate 13 and the reinforcing block 14 along the radial direction of the first inner support member 11.

[0033] Please refer to Figure 4 and Figure 5, the opposite ends of the second inner support member 12 are respectively adapted to be inserted into the hollow cavities 210 of the two hollow rods 200. In the present embodiment, the second inner support member 12 is generally in the structure of a hollow semi-cylindrical body. The structure of the second inner support member 12 is substantially the same as that of the first inner support member 11, and both include a support plate 13 and a reinforcing block 14. A receiving cavity 130 is provided on the side of the support plate 13 facing the first inner support member 11. In the present embodiment, the support plate 13 of the second inner support member 12 is an arc-shaped plate protruding away from the first inner support member 11, that is, the protruding direction of the support plate 13 of the second inner support member 12 is opposite to that of the support plate 13 of the first inner support member 11. The support plate 13 encloses to form the receiving cavity 130 with two open ends. The shape of the outer peripheral wall of the support plate 13 of the second inner support member 12 matches the inner wall of the hollow cavity 210 of the hollow rod 200. The reinforcing block 14 is fixedly connected to the inner wall of the receiving cavity 130. The second inner support member 12 further includes two end plates 15 and two stiffening plates 16. Among them, the two end plates 15 are respectively fixed to the two ends of the support plate 13. In the present embodiment, the end plate 15 and the support plate 13 are connected by a fillet transition to make it easier to insert the second inner support member 12 into the hollow rod 200. The two stiffening plates 16 are respectively disposed on the opposite sides of the reinforcing block 14, and each stiffening plate 16 is fixedly connected to the reinforcing block 14 and the inner wall of the receiving cavity 130.

[0034] A limiting flange 17 is further protruded on the outer peripheral wall of the support plate 13 of the second inner support member 12. The support plate 13 of the second inner support member 12 is separated into two insertion portions 132 by the limiting flange 17, and the two insertion portions 132 are respectively adapted to be inserted into the hollow cavities 210 of the two hollow rods 200. In the present embodiment, the height of the limiting flange 17 protruding from the outer peripheral wall of the corresponding support plate 13 is equal to the wall thickness of the hollow rod 200.

[0035] A positioning hole 120 for positioning the locking screw 50 is recessed on the side surface of the second inner support member 12 facing the first inner support member 11. In the present embodiment, the positioning hole 120 is recessed on the reinforcing block 14 of the second inner support member 12, and is recessed on the side surface of the reinforcing block 14 facing the first inner support member 11, and the positioning hole 120 and the screw hole 110 are substantially on the same straight line.

[0036] The locking screw 50 is threadedly connected to the screw hole 110, and one end of the locking screw 50 is movably inserted into the positioning hole 120 of the first inner support member 11. In the present embodiment, the locking screw 50 can be rotated in the positioning hole 120 under force. A wrench opening 51 is further provided at the end of the locking screw 50 away from the second inner support member 12. The wrench opening 51 can cooperate with a wrench (not shown in the figure) in the prior art to facilitate the user to screw the locking screw 50 with the wrench.

[0037] The locking screw 50 can rotate self - sufficiently in two opposite directions under force: When the locking screw 50 rotates self - sufficiently in a first direction, the second inner support member 12 and the first inner support member 11 move away from each other, so that the second inner support member 12 and the first inner support member 11 respectively abut against opposite sides of the inner wall of the hollow rod 200, thereby realizing the stable connection of the two hollow rods 200; When the locking screw 50 rotates self - sufficiently in a second direction opposite to the first direction, the second inner support member 12 and the first inner support member 11 can move closer to each other to release the hollow rod 200. At this time, the two hollow rods 200 can be removed from the hollow rod connecting device 100.

[0038] Please refer to Figures 6 to 8 , more specifically, in the initial state, the first inner support member 11 and the second inner support member 12 are in a state of being close to each other ( Figure 6 ). At this time, the support plates 13 of the first inner support member 11 and the support plates 13 of the second inner support member 12 form a cylinder, and the outer diameter of this cylinder is smaller than the inner diameter of the hollow rod 200 to facilitate inserting the hollow rod connecting device 100 into the hollow rod 200 to be connected. During use, insert the insertion parts 132 of the first inner support member 11 and the second inner support member 12 below the limit flange 17 into the hollow cavity 210 of one of the hollow rods 200 until the top end of this hollow rod 200 abuts against the bottom surface of the limit flange 17, and insert the other insertion parts 132 of the first inner support member 11 and the second inner support member 12 above the limit flange 17 into the hollow cavity 210 of the other hollow rod 200 until the bottom end of this hollow rod 200 supports on the top surface of the limit flange 17. Finally, insert a wrench into the wrench opening 51 of the locking screw 50 and rotate the wrench. By driving the locking screw 50 to rotate self - sufficiently in the first direction through the wrench, when the locking screw 50 rotates self - sufficiently in a first direction, the second inner support member 12 and the first inner support member 11 move away from each other, so that the second inner support member 12 and the first inner support member 11 respectively abut against opposite sides of the inner wall of the hollow rod 200, thereby realizing the stable connection of the two hollow rods 200. And in this embodiment, when the second inner support member 12 and the first inner support member 11 are in a state of moving away from each other, the end of the locking screw 50 away from the second inner support member 12 is received in the screw hole 110, which can prevent the protruding locking screw 50 from causing accidental injury to the human body.

[0039] When it is necessary to disconnect the two hollow rods 200, insert a wrench into the wrench opening 51 of the locking screw 50 and rotate the wrench. By driving the locking screw 50 to rotate self - sufficiently in the second direction through the wrench, the second inner support member 12 and the first inner support member 11 move closer to each other. At this time, the second inner support member 12 and the first inner support member 11 are separated from the inner wall of the hollow rod 200 to release the hollow rod 200, and the user can remove the two hollow rods 200 from the hollow rod connecting device 100.

[0040] When the above-mentioned hollow rod connecting device 100 is in use, the opposite ends of the first inner support member 11 are respectively inserted into the hollow cavities 210 of the two hollow rods 200, and the opposite ends of the second inner support member 12 are respectively inserted into the hollow cavities 210 of the two hollow rods 200. Rotate the locking screw 50 so that the second inner support member 12 and the first inner support member 11 move away from each other, so that the second inner support member 12 and the first inner support member 11 respectively abut against the opposite sides of the inner wall of the hollow rod 200, and the two hollow rods 200 to be connected can be quickly connected. And by the second inner support member 12 and the first inner support member 11 respectively abutting against the opposite sides of the inner wall of the hollow rod 200, compared with the snap fasteners in the prior art, the contact area between the second inner support member 12, the first inner support member 11 and the hollow rod 200 is increased, and thus the connection is more stable, and the connected hollow rod 200 is not easy to shake.

[0041] In the above-mentioned hollow rod connecting device 100, limiting flanges 17 are convexly provided on the outer peripheral walls of the first inner support member 11 and the second inner support member 12. The limiting flanges 17 can limit the depth of insertion of the first inner support member 11 and the second inner support member 12 into the hollow rod 200, and can prevent the first inner support member 11 and the second inner support member 12 from accidentally falling into the hollow rod 200. In addition, since the height of the limiting flange 17 protruding from the outer peripheral wall of the first inner support member 11 or the second inner support member 12 is equal to the wall thickness of the hollow rod 200, the overall outer diameter of the connected hollow rod 200 can be made consistent, and the appearance is more beautiful.

[0042] In the prior art, when using snap fasteners to connect the hollow rod 200, some snap fastener structures will be exposed outside the hollow rod 200 through the locking holes, which not only affects the beauty of the hollow rod 200, but also the snap fastener structure protruding outside the hollow rod 200 is likely to cause accidental injury to the human body; in the hollow rod connecting device 100 of this embodiment, when the second inner support member 12 and the first inner support member 11 are in a state of moving away from each other to connect the two hollow rods 200, the end of the locking screw 50 away from the second inner support member 12 is received in the screw hole 110, which not only makes the connected hollow rod 200 more beautiful, but also the locking screw 50 received in the screw hole 110 will not cause accidental injury to the human body.

[0043] In the above-mentioned hollow rod connecting device 100, by providing the end plate 15, the strength of the first inner support member 11 and the second inner support member 12 can be improved; by providing the reinforcing block 14 and the stiffening plate 16 at the positions where the positioning holes 120 and the screw holes 110 are opened, cracking of the support plate 13 caused by drilling can be avoided.

[0044] In the above-mentioned hollow rod connecting device 100, by providing the positioning hole 120 on the second inner support member 12, the locking screw 50 can be supported and the movement of the locking screw 50 can be positioned.

[0045] It can be understood that the shapes of the first inner support member 11 and the second inner support member 12 are not limited to this embodiment, and they can be designed into other shapes according to the shape of the hollow cavity 210 of the central rod to be connected.

[0046] The above description is a detailed description of the preferred and feasible embodiment of the present utility model. However, the embodiment is not intended to limit the scope of the patent application of the present utility model. Any equivalent changes or modifications made under the technical spirit disclosed by the present utility model shall fall within the scope of the patent covered by the present utility model.

Claims

1. A hollow rod connecting device, characterized in that: It includes a first inner support member, a second inner support member and a locking screw. The second inner support member is disposed opposite to the first inner support member. The locking screw penetrates through the first inner support member and one end thereof can contact the second inner support member. The locking screw is threadedly connected to the first inner support member. The locking screw can rotate self-driven under force so that the second inner support member and the first inner support member move away from or close to each other.

2. The hollow rod connecting device according to claim 1, characterized in that: Limit flanges are respectively protruded on the outer peripheral walls of the first inner support member and the second inner support member. The first inner support member and the second inner support member are separated into two insertion parts by the corresponding limit flanges. The two insertion parts are respectively used for being inserted into the hollow cavities of two hollow rods.

3. The hollow rod connecting device according to claim 2, characterized in that: The height that the limit flange protrudes from the outer peripheral wall is equal to the wall thickness of the hollow rod.

4. The hollow rod connecting device according to claim 2, characterized in that: A positioning hole is recessed on the side of the second inner support member facing the first inner support member. One end of the locking screw is movably inserted into the positioning hole.

5. The hollow rod connecting device according to claim 4, characterized in that: Both the first inner support member and the second inner support member include a support plate and a reinforcing block. A receiving cavity is provided on one side of the support plate facing the other support plate. The reinforcing block is fixedly connected to the inner wall of the receiving cavity. The positioning hole is provided on the corresponding reinforcing block. The limit flange is protruded on the outer peripheral wall of the support plate.

6. The hollow rod connecting device according to claim 5, characterized in that: A screw hole corresponding to the locking screw is provided on the first inner support member. The screw hole sequentially penetrates through the corresponding limit flange, the support plate and the reinforcing block. The locking screw is threadedly connected to the screw hole.

7. The hollow rod connecting device according to claim 6, characterized in that: When the second inner support member and the first inner support member are in a state of moving away from each other, one end of the locking screw away from the second inner support member is received in the screw hole.

8. The hollow rod connecting device according to claim 5, characterized in that: Both the first inner support member and the second inner support member include stiffening plates. The stiffening plates are fixedly connected to the reinforcing block and the inner wall of the receiving cavity.

9. The hollow rod connecting device according to claim 5, characterized in that: The support plate is an arc-shaped plate. The protruding directions of the two support plates are opposite. The support plates surround to form the receiving cavity with two open ends. The support plate further includes two end plates which are respectively fixed at two ends of the support plate.

10. The hollow rod connecting device according to claim 1, characterized in that: A wrench opening is further provided at one end of the locking screw away from the second inner support member.

Images