Joint connecting structure, folding structure, butt joint structure, hoop and dip net

Abstract

The utility model provides a connector connecting structure, a folding structure, a butt joint structure, a net ring and a dip net, and belongs to the technical field of dip nets. The connector connecting structure comprises the connector and the rod head serving as the end of the hoop unit, the end of the rod head is closed, the connector is integrally connected to the end of the rod head in an injection molding mode, no basis for mutual movement exists between the connector and the rod head, and no matter the rod head is linear or bent, the connector can be tightly connected with the rod head without gaps. And the joint and the rod head cannot shake. The closed rod head can prevent unsolidified materials from jumping out along the interior of the hollow rod head during injection molding. The structure can be applied to the folding structure of the net ring of the dip net and the butt joint structure of the net ring and the handle. Therefore, the dip net can be stable and does not shake or deform when unfolded, and the stability is high when the dip net is used.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of dip nets, and more particularly relates to a joint connecting structure, a folding structure, a butt joint structure, a net ring and a dip net. BACKGROUND

[0002] A dip net is a common tool for catching fish. In order to reduce the volume and facilitate carrying, the net ring of the dip net is often provided as a plurality of net ring units, and the net ring units are provided with a folding structure. In order to facilitate connection, the net ring unit and the handle are provided as a detachable butt joint structure. The end of the net ring unit is connected through a specific joint, and adjacent net ring units are connected to each other through the joint to realize the folding structure and the butt joint structure.

[0003] In the prior art, the utility model patent with publication number CN201323820Y discloses a folding dip net. In order to realize folding, the connecting pipes are connected through pipe adapters and adapter connecting blocks. In the disclosed patent, the pipe adapter is the joint, and the connecting pipe is the net ring unit. After the connecting pipe and the pipe adapter are inserted and connected, the connection is fastened through a fastening screw.

[0004] For example, the utility model patent with publication number CN212573922U discloses a novel dip net ring device. In order to realize the connection between the net ring and the handle, locking blocks one and two are respectively connected to the ends of the arc ring one and the arc ring four. In the disclosed patent, the locking blocks one and two are the joints, and the arc ring one and the arc ring four are the net ring units. The locking blocks one and two are respectively inserted into the holes in the ends of the arc ring one and the arc ring four, and are connected through rivets.

[0005] As can be seen from the above two existing disclosed patents, the joints are all independent components connected to the ends of the net ring units through screw connection or riveting. The disadvantage of this is that since circular net rings are very common, the rod ends of the arc-shaped net ring units also do not extend along a straight line, but have an arc structure. However, the insertion holes for the joint ends to butt joint with the net ring units are mostly straight hole structures processed through drilling. When the arc-shaped ends of the net ring units are inserted into the straight insertion holes, a gap will occur. Even if the joint is locked through a screw or a rivet, the entire net ring will still easily shake at the folding structure or the butt joint structure, making the shape of the net ring very unstable. SUMMARY

[0006] To solve the problems of the prior art, the application provides a joint connecting structure, a folding structure, a butt joint structure, a net ring and a dip net. The joint is integrally injection molded on the end of the rod head, completely avoiding the shaking between the joint and the rod head, and ensuring the stability of the net ring.

[0007] To achieve the above object, the technical scheme of the present application provides a joint connecting structure, comprising a joint and a rod head as an end of a mesh loop unit, the end of the rod head is closed, and the joint is integrally injection molded at the end of the rod head. Since the joint and the rod head are integrally injection molded, there is no basis for movement of each other between the two, so that the joint and the rod head cannot shake and rotate relative to each other. The structure can ensure the stability of the mesh loop after being arranged on the mesh loop. The closed rod head can avoid the un-solidified material from flowing into the inside of the rod head during injection molding, avoid the material from flowing out of the other end of the rod head, and ensure the smooth injection molding.

[0008] Optionally, the joint connecting structure further comprises a fixing pin, the rod head is a hollow tubular structure, the inside of the rod head is blocked by a blocking piece to realize the closure of the end of the rod head. The fixing pin passes through the side wall of the rod head and the blocking piece to fixedly connect the blocking piece with the rod head. The fixing pin can fix the position of the blocking piece to avoid the movement of the blocking piece towards the inside of the rod head due to high pressure during injection molding.

[0009] Optionally, the end of the blocking piece is recessed at the end of the rod head, the rod head and the blocking piece surround a containing cavity, and the joint has an extension part extending into the containing cavity. After the injection molding is completed, the extension part and the inside of the rod head are embedded with each other, which improves the connection firmness between the joint and the rod head.

[0010] Optionally, the end of the blocking piece is flush with the end of the rod head.

[0011] Optionally, the joint covers the outside of both ends of the fixing pin to completely shield the fixing pin to avoid the falling of the fixing pin.

[0012] Optionally, the rod head is a solid structure, so that the end of the rod head is naturally closed, and the material will not flow out during injection molding of the joint.

[0013] A folding structure comprises a hinge shaft and two groups of the above-mentioned joint connecting structures, wherein the joint in one group of the joint connecting structures is a first joint, and the joint in the other group of the joint connecting structures is a second joint; the end of the first joint away from the rod head connected thereto is provided with a rotating groove, the end of the second joint away from the rod head connected thereto is provided with a plug-in part matching the width of the rotating groove, the plug-in part is rotatably installed in the rotating groove through the hinge shaft, and the two rod heads are folded or unfolded through the plug-in part and the rotating groove. Since the first joint and the corresponding rod head, and the second joint and the corresponding rod head are connected with each other through the above-mentioned joint connecting structure, the folding or unfolding of the two rod heads greatly reduces the shaking of each other.

[0014] The end of the insertion part is provided with a first abutting end, the root of the insertion part is provided with a first abutting wall, the end of the rod head is provided with a second abutting end, the inner end of the rotating groove has a second abutting wall, when the two rod heads are unfolded, the first abutting end abuts against the second abutting wall, or the second abutting end abuts against the first abutting wall, thereby limiting the maximum rotation angle.

[0015] The docking structure comprises a docking screw and two groups of the joint connecting structure, wherein the joint in one group of the joint connecting structure is a third joint, and the joint in the other group of the joint connecting structure is a fourth joint; the third joint and the fourth joint are both in a stepped shape and are embedded with each other, the docking screw is installed on the bottom wall of the third joint and the fourth joint which are embedded with each other, the fourth joint is provided with a through hole, and the docking screw is arranged through the through hole. The docking screw is used for being threadedly connected with a handle, so that the docking screw is convenient to assemble and disassemble. Since the third joint and the corresponding rod head and the fourth joint and the corresponding rod head are connected with each other by using the above-mentioned joint connecting structure, when the two rod heads are connected, the shaking of the two rod heads is greatly reduced.

[0016] The net ring comprises at least three net ring units arranged in a ring shape in sequence, and the above-mentioned folding structure and the above-mentioned docking structure are adopted; the two end portions of each net ring unit have the joint connecting structure, one group of adjacent two net ring units are connected with each other by using the docking structure, and all the other adjacent net ring units are connected with each other by using the folding structure, so that the ring-shaped net ring is formed. The net ring can be folded by using the folding structure, so that the volume is reduced and the net ring is convenient to carry, and the net ring can be detachably connected with the handle by using the docking structure, so that the net ring is convenient to assemble. Since all the movable folding structures and the docking structures adopt the above-mentioned joint connecting structure, when the net ring is unfolded, the net ring is stable and is not deformed.

[0017] The dip net comprises a net bag, a handle and the above-mentioned net ring, the net bag is installed on the inner side of the net ring, the end of the handle is provided with a threaded hole, and the docking screw is screw-coupled with the threaded hole. The dip net is convenient to fold, carry and assemble, the net ring is stable and is not easy to shake and deform, and the dip net has high stability during use.

[0018] The technical scheme of the present application has the following beneficial effects over the prior art:

[0019] In the joint connecting structure, the joint is integrally injection-molded on the end of the rod head, and the joint and the rod head have no basis for moving with each other, and no matter whether the rod head is in a straight shape or a curved shape, the joint can be tightly connected with the rod head without a gap, so that the joint and the rod head do not shake. The closed rod head can avoid that the un-solidified material flows out along the inside of the hollow rod head during injection molding. The structure can be applied to the folding structure of the net ring of the dip net and the docking structure of the net ring and the handle. The dip net is stable and does not shake and deform when unfolded, and has high stability during use. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0021] Figure 1 Front view of the first joint connecting structure;

[0022] Figure 2 Split structure diagram of the first joint connecting structure;

[0023] Figure 3 Top view of the first joint connecting structure;

[0024] Figure 4 Front view of the second joint connecting structure;

[0025] Figure 5 Split structure diagram of the second joint connecting structure;

[0026] Figure 6 Front view of the third joint connecting structure;

[0027] Figure 7 Folding structure diagram;

[0028] Figure 8 Butt joint structure diagram;

[0029] Figure 9 Split structure diagram of the butt joint structure;

[0030] Figure 10 Net ring structure diagram;

[0031] Figure 11 Screen structure diagram.

[0032] Fig. 10, joint connecting structure; 11, joint; 12, rod head; 13, fixing pin; 14, plugging piece; 15, accommodating cavity; 16, extension; 20, folding structure; 21, first joint; 22, second joint; 23, hinged shaft; 24, rotating groove; 25, plug-in part; 26, first abutting end; 27, first abutting wall; 28, second abutting end; 29, second abutting wall; 261, first fillet; 281, second fillet; 30, butt joint structure; 31, butt joint screw; 32, third joint; 33, fourth joint; 34, perforation; 40, net ring; 41, net ring unit; 51, mesh bag; 52, handle. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0034] Embodiment 1

[0035] The present embodiment provides a joint connecting structure used on the wire loop 40 of a wire mesh. Based on the drawings shown in Figure 1 , Figure 2 and Figure 3 , the joint connecting structure 10 comprises a joint 11 and a rod head 12 as the end of the wire loop unit 41. The end of the rod head 12 is closed, and the joint 11 is integrally injection molded on the end of the rod head 12. Since the joint 11 is integrally injection molded with the rod head 12, there is no basis for movement between them, and no matter whether the rod head 12 is linear or curved, the joint 11 can be tightly connected with the rod head 12 without gaps. Compared with the existing riveting or bolt connecting method, there is no shaking between the joint 11 and the rod head 12, and the structure can ensure the stability of the wire loop 40 after being arranged on the wire loop 40.

[0036] In the present embodiment, in order to reduce the weight of the wire mesh, the rod head 12 is a hollow tubular structure. The inside of the rod head 12 is blocked by a blocking piece 14 to achieve the closure of the end of the rod head 12. The closed rod head 12 can avoid the un-solidified material from flowing into the inside of the hollow rod head 12 during injection molding, avoid the material from flowing out from the other end of the rod head 12, and ensure the smooth progress of injection molding. The joint connecting structure 10 further comprises a fixing pin 13, which fixes and connects the blocking piece 14 with the rod head 12 by penetrating through the side wall of the rod head 12 and the blocking piece 14. The fixing pin 13 can fix the position of the blocking piece 14 to avoid the situation that the blocking piece 14 moves towards the inside of the rod head 12 due to high pressure during injection molding.

[0037] Preferably, the end of the blocking piece 14 is recessed at the end of the rod head 12, the rod head 12 and the blocking piece 14 form a containing cavity 15, and the joint 11 has an extension 16 extending into the containing cavity 15. After the injection molding is completed, the extension 16 and the inside of the rod head 12 are embedded with each other, which improves the connection firmness between the joint 11 and the rod head 12, and greatly increases the bearing capacity. At the same time, after injection molding, the joint 11 covers the outside of both ends of the fixing pin 13 to completely shield the fixing pin 13, avoiding the falling off of the fixing pin 13.

[0038] In the present embodiment, the rod head 12 can be a carbon fiber tube, a metal tube or a plastic tube. The tube blocking piece 14 is preferably made of glass fiber nylon or carbon fiber nylon material. The joint 11 is preferably installed at the end of the rod head 12 by carbon fiber injection molding to ensure its mechanical properties and reduce weight.

[0039] In other embodiments, the blocking piece 14 can be fixed inside the rod head 12 by adhesion or screwing or other ways. It should be noted that whether the blocking piece 14 shakes or not does not affect the normal injection molding and the stable connection of the joint 11 on the rod head 12, as long as the blocking piece 14 can block the injection molding material from entering the inside of the rod head 12. At the same time, as shown in Figure 4 and Figure 5 , the end of the blocking piece 14 can also be flush with the end of the rod head 12, which does not affect the normal connection of the rod head 12 and the joint 11. Alternatively, based on Figure 6 , the rod head 12 is a solid structure, and the end of the rod head 12 is naturally closed, so there is no material leakage during the injection of the joint 11, and no additional blocking piece 14 is needed to block the end to ensure the integral injection molding connection of the joint 11 and the end of the rod head 12.

[0040] Embodiment 2:

[0041] This embodiment provides a folding structure for folding and unfolding between two adjacent mesh units 41 on the mesh ring 40. Based on Figure 7 , the folding structure includes a hinge shaft 23 and two groups of joint connection structures 10 shown in embodiment 1, wherein the joint 11 in one group of joint connection structures 10 is a first joint 21, and the joint 11 in the other group of joint connection structures 10 is a second joint 22. The first joint 21 is provided with a rotating groove 24 at the end away from the rod head 12, and the second joint 22 is provided with a plug-in part 25 matching the width of the rotating groove 24 at the end away from the rod head 12. The plug-in part 25 is rotatably installed in the rotating groove 24 through the hinge shaft 23, so that the two groups of joint connection structures 10 are rotatably connected to each other. The two rod heads 12 are folded or unfolded through the rotating plug-in part 25 and the rotating groove 24. The end of the plug-in part 25 is provided with a first abutting end 26, the root of the plug-in part 25 is provided with a first abutting wall 27, the end of the rod head 12 is provided with a second abutting end 28, and the inner end of the rotating groove 24 has a second abutting wall 29. When the two rod heads 12 are unfolded, the first abutting end 26 abuts against the second abutting wall 29, or the second abutting end 28 abuts against the first abutting wall 27, to limit the maximum rotation angle. Of course, when the two rod heads 12 are unfolded and the first abutting end 26 abuts against the second abutting wall 29, the second abutting end 28 can also abut against the first abutting wall 27 at the same time.

[0042] In this embodiment, the hinge shaft 23 can adopt a mother screw, which can adjust the abutting and pressing degree between the side wall of the rotating groove 24 and the insertion part 25, and ensure the stable position between them after unfolding. Since the first joint 21 and the corresponding rod head 12, and the second joint 22 and the corresponding rod head 12 are connected by the joint connection structure 10, the shaking between the two rod heads 12 is greatly reduced when the two rod heads 12 are unfolded. Meanwhile, the first rounded corner 261 is arranged at the corner of the first abutting end 26 to avoid interference with the second abutting wall 29 during rotation, and the second rounded corner 281 is arranged at the corner of the second abutting end 28 to avoid interference with the first abutting wall 27 during rotation.

[0043] Embodiment 3

[0044] This embodiment provides a docking structure used in the connection between the net ring 40 and the handle 52. Based on the structure shown in Figure 8 and Figure 9 The docking structure includes a docking screw 31 and two groups of joint connection structures 10 shown in embodiment 1. The joint 11 in one group of joint connection structures 10 is a third joint 32, and the joint 11 in the other group of joint connection structures 10 is a fourth joint 33. The third joint 32 and the fourth joint 33 are both stepped and embedded with each other to realize alignment and reduce shaking between them.

[0045] The docking screw 31 is installed on the bottom wall of the third joint 32 and the fourth joint 33, and the fourth joint 33 is provided with a through hole 34, and the docking screw 31 passes through the through hole 34. The docking screw 31 is used for threaded connection with the handle 52, which is convenient for assembly and disassembly. Since the third joint 32 and the corresponding rod head 12, and the fourth joint 33 and the corresponding rod head 12 are connected by the joint connection structure 10, compared with the connection structure of the prior art by bolts or rivets, the shaking between the two rod heads 12 is greatly reduced after the two rod heads 12 are connected.

[0046] Embodiment 4

[0047] This embodiment provides a net ring, which includes at least three net ring units 41 arranged in a ring shape in sequence, and adopts the folding structure 20 in embodiment 2 and the docking structure 30 in embodiment 3.

[0048] In this embodiment, based on Figure 10As shown, the number of the net ring units 41 is four. Of course, the number of the net ring units 41 can also be set to three or five according to the actual folding requirements. Each of the two ends of the net ring unit 41 has the joint connecting structure 10, i.e. a total of eight groups of joint connecting structures 10. Two adjacent net ring units 41 are connected to each other through the butt joint structure 30 for connecting the handle 52. The rest of the adjacent net ring units 41 are connected to each other through the folding structure 20, so as to form the annular net ring 40. The net ring 40 is folded and unfolded through three folding structures 20 to reduce the volume for convenient carrying, and is detachably connected to the handle 52 through the butt joint structure 30 for convenient assembly. Since all the movable folding structures 20 and the butt joint structure 30 adopt the above-mentioned joint connecting structure 10, the net ring 40 can be stable and not deformed when unfolded.

[0049] The net ring unit 41 is preferably made of a carbon fiber hollow tube to ensure its strength and reduce weight. Of course, the net ring unit 41 can also be made of a metal tube, a plastic tube, a solid carbon fiber rod, a solid metal rod or a solid plastic rod, etc.

[0050] Preferably, the net ring unit 41 is in a circular arc shape, and the first joint 21, the second joint 22, the third joint 32 and the fourth joint 33 are all in a circular arc shape smoothly transitioned with the corresponding net ring unit 41. When the net ring 40 is unfolded, a complete circle can be formed. Compared with the prior art in which the arc-shaped rod head 12 is inserted into the straight insertion hole, the technical scheme of the present embodiment will not appear a shape transition that is not smooth at the folding structure 20 and the butt joint structure 30, and is not easy to hang on foreign matters under water.

[0051] Of course, in other embodiments, the net ring 40 can also be a triangular net ring 40 or other polygonal net ring 40, which has a plurality of straight edges, and the first joint 21, the second joint 22, the third joint 32 and the fourth joint 33 are all located at the straight edges and connected with the straight rod head 12 to achieve smooth transition.

[0052] Embodiment 5:

[0053] The present embodiment provides a screen based on the screen of the above-mentioned embodiment 4. Figure 11 As shown, it comprises the net bag 51, the handle 52 and the net ring 40 shown in the above-mentioned embodiment 4. The net bag 51 is installed inside the net ring 40, and the end of the handle 52 is provided with a threaded hole (not shown in the drawing), and the butt joint screw 31 is screwed with the threaded hole for convenient assembly and disassembly of the handle 52. Since the above-mentioned joint connecting structure 10 is adopted, the net ring 40 is stable and not easy to shake and deform, and has high stability during use.

[0054] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A joint connection structure comprising a joint and a rod head as an end portion of a netting unit, characterized by: The end of the club head is closed, and the joint is integrally injection-molded on the end of the club head.

2. The joint connection structure of claim 1, wherein: The club head is a hollow tubular structure, the inside of the club head is blocked by a blocking piece, and the fixing pin is used to fixedly connect the blocking piece and the club head by penetrating the sidewall of the club head and the blocking piece.

3. The joint connection structure of claim 2, wherein: The end of the blocking piece is recessed on the end of the club head, the club head and the blocking piece form a containing cavity, and the joint has an extension part extending into the containing cavity.

4. The joint connection structure of claim 2, wherein: The end of the blocking piece is flush with the end of the club head.

5. The joint connection structure according to claim 2 or 3 or 4, characterized by: The joint covers the outside of both ends of the fixing pin.

6. The joint connection structure of claim 1, wherein: The club head is a solid structure.

7. A foldable structure, characterized by: The joint connecting structure comprises a hinge shaft and two groups of joints as claimed in any one of claims 1-6, wherein the joint in one group of the joint connecting structure is a first joint, and the joint in the other group of the joint connecting structure is a second joint. The first joint is provided with a rotating groove away from the end of the club head connected thereto, the second joint is provided with an insertion part matching the width of the rotating groove away from the end of the club head connected thereto, the insertion part is rotatably installed in the rotating groove through the hinge shaft, and the two club heads are folded or unfolded through the insertion part and the rotating groove. The end of the insertion part is provided with a first abutting end, the root of the insertion part is provided with a first abutting wall, the end of the club head is provided with a second abutting end, and the inner end of the rotating groove is provided with a second abutting wall, and when the two club heads are unfolded, the first abutting end abuts against the second abutting wall, or the second abutting end abuts against the first abutting wall.

8. A docking structure, characterized by: The joint connecting structure comprises a butt screw and two groups of joints as claimed in any one of claims 1-6, wherein the joint in one group of the joint connecting structure is a third joint, and the joint in the other group of the joint connecting structure is a fourth joint. The third joint and the fourth joint are both stepped and embedded in each other, the butt screw is installed on the bottom wall of the third joint and the fourth joint embedded in each other, the fourth joint is provided with a through hole, and the butt screw is arranged through the through hole.

9. A mesh loop characterized by: The joint connecting structure comprises at least three net ring units arranged in a ring shape in sequence, and the folding structure in claim 7 and the butt joint structure in claim 8 are adopted. The ends of two adjacent net ring units are connected to each other through the butt joint structure, and the ends of all other adjacent net ring units are connected to each other through the folding structure.

10. A wire mesh characterized in that: The joint connecting structure comprises a net bag, a handle, and a net ring as claimed in claim 9, the net bag is installed on the inside of the net ring, the end of the handle is provided with a screw hole, and the butt screw is screw-connected with the screw hole.

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