Quick-release type fixing pin structure of folding base

Abstract

The utility model discloses a quick release type fixing pin structure of a folding base, which comprises a first fixing pin single body and a second fixing pin single body, and the second fixing pin single body is rotatably connected to one end of the first fixing pin single body. A rotating shaft rod matched with the second fixing pin single body is welded to the middle position of one end of the first fixing pin single body. By installing the worm gear and the like, when the fixing pin assembly is used, a user grabs an operation hand disc on the machine shell to rotate, the transmission effect of the worm and the worm gear is matched, the lead screw in the guide sliding rail is driven to rotate, and therefore the driving arm arranged on the lead screw in a threaded and sleeved mode can be driven to slide up and down along the guide sliding rail; and therefore, the locking insertion rods evenly welded to the bottom of one end of the driving arm are inserted into the locking insertion holes in the rotating shaft rod, rapid locking and fixing between the first fixing pin single body and the second fixing pin single body can be achieved, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of folding base structures, and particularly relates to a quick-release fixing pin structure for a folding base. Background Technique

[0002] Folding bases are very popular among consumers because of their foldable nature, convenience in storage and portability. The fixing pin structure is a commonly used connecting part on folding bases. It is a mechanical part used to position and fasten corresponding movable arms on the folding base. It is installed on two corresponding movable arms of the folding base to achieve relative flipping and locking fixation of the two movable arms.

[0003] Since this type of fixing pin structure for folding bases often requires the use of screws, washers, etc. to achieve the locking operation function during actual operation, this method is inconvenient to operate, has poor self-locking performance, and is prone to loosening problems, which can no longer meet people's needs. Therefore, we propose a new quick-release fixing pin structure for folding bases to solve the above-mentioned drawbacks and provide a more convenient and stable locking and fixing effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a quick-release fixing pin structure for a folding base to solve the problems mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A quick-release fixing pin structure for a folding base, including a first fixing pin monomer, and further including

[0006] A second fixing pin monomer, the second fixing pin monomer is rotatably connected to one end of the first fixing pin monomer, and a rotating shaft rod matching the second fixing pin monomer is welded at the middle position of one end of the first fixing pin monomer;

[0007] A housing, the housing is welded to the top of the second fixing pin monomer, a worm and a worm gear are movably connected inside the housing, and an operating hand disk welded to the worm is arranged on one side of the housing;

[0008] A guide rail is arranged at the bottom of the housing, a lead screw welded to the worm gear is connected inside the guide rail, and a driving arm is threadedly connected to the lead screw;

[0009] Locking insertion rods are evenly welded to the bottom of one end of the driving arm, and locking insertion holes matching the locking insertion rods are arranged on the rotating shaft rod.

[0010] Furthermore, bearings are arranged between both the worm and the worm gear and the inner side wall of the housing, and a sliding connection is formed between the driving arm and the guide rail, optimizing the structure of the fixing pin assembly.

[0011] Further, a spring seat is connected to one side of the casing.

[0012] Further, a pressing block matching the operating hand disk is arranged on the side of the spring seat away from the casing.

[0013] Further, mounting plates are welded to the top and bottom of the first fixing pin monomer and the second fixing pin monomer, and screw holes are arranged on the mounting plates, so that it is convenient to fixedly install the first fixing pin monomer and the second fixing pin monomer on the corresponding folding base by using screws through the mounting plates.

[0014] Further, second guiding balls matching the inner side wall of the second fixing pin monomer are evenly and movably connected to the outer side wall of the rotating shaft rod.

[0015] Further, first guiding balls matching one end of the second fixing pin monomer are evenly and movably connected to one end of the rotating shaft rod.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The quick-release type fixing pin structure of the folding base is provided with a worm gear and the like, so that the fixing pin assembly optimizes its own structure. The user grabs the operating hand disk on the casing and rotates it. With the transmission of the worm and the worm gear, the lead screw inside the guiding slide rail is driven to rotate. This can drive the driving arm sleeved on the lead screw in a threaded manner to slide up and down along the guiding slide rail, so that the locking insertion rods uniformly welded to the bottom of one end of the driving arm are inserted into the locking insertion holes on the rotating shaft rod, which can realize the quick locking and fixing between the first fixing pin monomer and the second fixing pin monomer. Compared with the locking operation through screws and washers, it realizes the advantages of quick disassembly and block assembly, has strong practicability, and also improves the stability performance of the locking structure and avoids loosening problems by using the self-locking property of transmission mechanisms such as worm and worm gear. Description of the Drawings

[0018] Figure 1 is a front view structural schematic diagram of the present utility model;

[0019] Figure 2 is a partial top view sectional structural schematic diagram of the second casing of the present utility model;

[0020] Figure 3 is a front view structural schematic diagram of the first fixing pin monomer of the present utility model;

[0021] Figure 4 is of the present utility model Figure 2 The enlarged structural schematic diagram at position A.

[0022] In the figure: 1. First fixing pin monomer; 2. Second fixing pin monomer; 3. Mounting piece; 4. Rotating shaft rod; 5. Locking insertion rod; 6. Lead screw; 7. Guide slide rail; 8. Driving arm; 9. Operating hand disk; 10. Machine housing; 12. Worm; 13. Worm gear; 14. Locking insertion hole; 15. First guide ball; 16. Second guide ball; 17. Pressure block; 18. Spring seat. Detailed implementation manner

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail the present utility model.

[0024] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0025] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are usually in reference to the direction shown in the drawings, or in reference to the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer relative to the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0026] Please refer to Figures 1-4 , an embodiment provided by the present utility model: A quick-release type fixing pin structure for a folding base, including a first fixing pin monomer 1, and further including

[0027] A second fixing pin monomer 2, the second fixing pin monomer 2 is rotatably connected to one end of the first fixing pin monomer 1, and a rotating shaft rod 4 matching the second fixing pin monomer 2 is welded at the middle position of one end of the first fixing pin monomer 1;

[0028] A machine housing 10, the machine housing 10 is welded to the top of the second fixing pin monomer 2, a worm 12 and a worm gear 13 are movably connected inside the machine housing 10, and an operating hand disk 9 welded to the worm 12 is arranged on one side of the machine housing 10;

[0029] A guide slide rail 7 is arranged at the bottom of the machine housing 10, a lead screw 6 welded to the worm gear 13 is connected inside the guide slide rail 7, and a driving arm 8 is threadedly connected to the lead screw 6;

[0030] Locking insertion rods 5 are evenly welded to the bottom of one end of the driving arm 8, and locking insertion holes 14 matching the locking insertion rods 5 are arranged on the rotating shaft rod 4;

[0031] During use, the user holds the operating handwheel 9 on the casing 10 and rotates it. With the transmission of the worm 12 and the worm wheel 13, the lead screw 6 inside the guide rail 7 is driven to rotate. This can drive the driving arm 8 with a threaded sleeve on the lead screw 6 to slide up and down along the guide rail 7, so that the locking insertion rod 5 evenly welded to the bottom of one end of the driving arm 8 is inserted into the locking jack 14 on the rotating shaft rod 4. This can achieve quick locking and fixing between the first fixed pin unit 1 and the second fixed pin unit 2. Compared with the locking operation through screws and washers, it realizes the advantages of quick disassembly and block assembly, has strong practicability, and also improves the stability performance of the locking structure and avoids loosening problems by using the self-locking property of transmission mechanisms such as the worm 12 and the worm wheel 13;

[0032] Bearings are provided between both the worm 12 and the worm wheel 13 and the inner side wall of the casing 10. A sliding connection is formed between the driving arm 8 and the guide rail 7, optimizing the structure of the fixed pin assembly;

[0033] One side of the casing 10 is connected with a spring seat 18;

[0034] On the side of the spring seat 18 away from the casing 10, a pressing block 17 matching the operating handwheel 9 is provided;

[0035] During use, after completing a locking and fixing operation, the pressing block 17 will press the operating handwheel 9 under the elastic action of the spring seat 18. When it is necessary to rotate the operating handwheel 9 for adjustment, only need to manually separate the pressing block 17 and the rotating operating handwheel 9;

[0036] Mounting plates 3 are welded to the top and bottom of both the first fixed pin unit 1 and the second fixed pin unit 2. Screw holes are provided on the mounting plates 3, making it convenient to fix and install the first fixed pin unit 1 and the second fixed pin unit 2 on the corresponding folding base by using screws through the mounting plates 3;

[0037] Second guide balls 16 matching the inner side wall of the second fixed pin unit 2 are evenly and movably connected to the outer side wall of the rotating shaft rod 4;

[0038] First guide balls 15 matching one end of the second fixed pin unit 2 are evenly and movably connected to one end of the rotating shaft rod 4;

[0039] During use, the second guide ball 16 that is evenly and movably connected to the outer sidewall of the rotating shaft rod 4 and matches the inner sidewall of the second fixed pin unit 2, and the first guide ball 15 that is evenly and movably connected to one end of the rotating shaft rod 4 and matches one end of the second fixed pin unit 2 are used to convert the sliding friction between the second fixed pin unit 2 and the first fixed pin unit 1 into rolling friction, reducing the influence of frictional resistance, thereby reducing the resistance when the second fixed pin unit 2 and the first fixed pin unit 1 rotate to achieve the flipping movement of the movable arm on the folding base, and further improving the smoothness of the flipping and folding operation of the folding base.

[0040] The working principle of the present utility model is as follows: First, the user uses the mounting pieces 3 welded to the top and bottom of the first fixed pin unit 1 and the second fixed pin unit 2. By matching the screw holes provided on the mounting pieces 3, the first fixed pin unit 1 and the second fixed pin unit 2 can be fixedly installed on two corresponding movable arms of the corresponding folding base through screws. Through the rotational connection between the rotating shaft rod 4 on the first fixed pin unit 1 and the second fixed pin unit 2, it is convenient to achieve the flipping operation between two corresponding movable arms on the folding base. At the same time, the user rotates the operating hand disk 9 on the casing 10. With the transmission of the worm 12 and the worm gear 13, it drives the screw rod 6 inside the guide rail 7 to rotate, which drives the driving arm 8 sleeved with a thread on the screw rod 6 to slide up and down along the guide rail 7. As a result, the locking insertion rods 5 evenly welded to the bottom of one end of the driving arm 8 are inserted into the locking insertion holes 14 on the rotating shaft rod 4, which can achieve the quick locking and fixing between the first fixed pin unit 1 and the second fixed pin unit 2. Compared with the locking operation through screws and washers, it realizes the advantages of quick disassembly and block assembly, with strong practicability. And by utilizing the self-locking property of the transmission mechanism such as the worm 12 and the worm gear 13, the stability of the locking structure is also improved, avoiding loosening problems. At the same time, the second guide ball 16 that is evenly and movably connected to the outer sidewall of the rotating shaft rod 4 and matches the inner sidewall of the second fixed pin unit 2, and the first guide ball 15 that is evenly and movably connected to one end of the rotating shaft rod 4 and matches one end of the second fixed pin unit 2 are used to convert the sliding friction between the second fixed pin unit 2 and the first fixed pin unit 1 into rolling friction, reducing the influence of frictional resistance, thereby reducing the resistance when the second fixed pin unit 2 and the first fixed pin unit 1 rotate to achieve the flipping movement of the movable arm on the folding base, and further improving the smoothness of the flipping and folding operation of the folding base.

[0041] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0044] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A quick-release fixing pin structure for a folding base, comprising a first fixing pin unit (1), characterized in that: It further includes a second fixed pin unit (2), the second fixed pin unit (2) is rotatably connected to one end of the first fixed pin unit (1), and a rotating shaft rod (4) matching the second fixed pin unit (2) is welded at the middle position of one end of the first fixed pin unit (1); a housing (10), the housing (10) is welded to the top of the second fixed pin unit (2), a worm (12) and a worm wheel (13) are movably connected inside the housing (10), and an operating hand disc (9) welded to the worm (12) is arranged on one side of the housing (10); a guiding slide rail (7) is arranged at the bottom of the housing (10), a lead screw (6) welded to the worm wheel (13) is connected inside the guiding slide rail (7), and a driving arm (8) is threadedly connected to the lead screw (6); locking insertion rods (5) are uniformly welded to the bottom of one end of the driving arm (8), and locking insertion holes (14) matching the locking insertion rods (5) are arranged on the rotating shaft rod (4).

2. The quick-release fixing pin structure of a folding base according to claim 1, characterized in that, Bearings are arranged between both the worm (12) and the worm wheel (13) and the inner side wall of the housing (10), and a sliding connection is formed between the driving arm (8) and the guiding slide rail (7).

3. The quick-release fixing pin structure of a folding base according to claim 1, wherein, A spring seat (18) is connected to one side of the housing (10).

4. The quick-release fixing pin structure of a folding base according to claim 3, characterized in that, A pressing block (17) matching the operating hand disc (9) is arranged on the side of the spring seat (18) away from the housing (10).

5. A quick-release fixing pin structure for a folding base according to claim 1, characterized in that, Mounting plates (3) are welded to the top and bottom of both the first fixed pin unit (1) and the second fixed pin unit (2), and screw holes are arranged on the mounting plates (3).

6. The quick-release fixing pin structure of a folding base according to claim 1, characterized in that, Second guiding balls (16) matching the inner side wall of the second fixed pin unit (2) are uniformly movably connected to the outer side wall of the rotating shaft rod (4).

7. The quick-release fixing pin structure of a folding base according to claim 1, characterized in that, First guiding balls (15) matching one end of the second fixed pin unit (2) are uniformly movably connected to one end of the rotating shaft rod (4).

Images