Fastener convenient to disassemble and assemble

Abstract

The fastener convenient to disassemble and assemble comprises a nut and a bolt, the nut is composed of a hexagonal block and a cylindrical block, a sliding sleeve is made to move downwards all the time through the elastic force effect of a spring, the inner wall of the sliding sleeve limits outward movement of a plurality of ejector blocks, and therefore a plurality of fan-shaped screw rings contract inwards, and the bolt is fixed to the nut. The internal thread is matched with the threaded section of the bolt, so that the fastening effect between the bolt and the nut is achieved, the sliding sleeve moves upwards, the ejector block loses the limitation of the inner wall of the sliding sleeve, the fan-shaped threaded ring can push the ejector block to move outwards under the action of external force, and the nut is fastened. The fan-shaped threaded ring is arranged on the threaded section of the bolt, so that the gap between the fan-shaped threaded ring and the threaded section of the bolt is enlarged, the nut and the bolt can be separated without screwing the nut in the dismounting process, the number of turns of screwing of the nut can be effectively reduced after the bolt is wrapped in the manner in the mounting process, and the bolt and the nut are more convenient and faster to dismount and mount.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field especially relates to a fastener convenient to dismouting. BACKGROUND

[0002] Fastener is the general term of a kind of mechanical parts when two or more than two parts (or component) is fastened and connected to become a whole, usually including bolt, stud, screw, nut, self-tapping screw, wood screw, washer, check ring, pin, rivet, assembly and connecting pair and welding peg.

[0003] Bolt and nut as common fastener, when fastening and disassembling, by screwing mode is carried out, but the number of turns is more, it is more time-consuming, leading to disassembly is inconvenient, therefore need a kind of fastener convenient to dismouting to meet people's needs. UTILITY MODEL CONTENT

[0004] The utility model is to provide a kind of fastener convenient to dismouting to solve the problem raised in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of fastener convenient to dismouting, including nut and bolt, the nut is composed of hexagonal block and cylindrical block, identical specification through-hole is set up on hexagonal block and cylindrical block, ring groove is set up on the middle part outer wall of cylindrical block, the top of ring groove is connected with spring, the bottom of spring is connected with sliding sleeve, sliding sleeve is slidably connected in ring groove, the inner wall of through-hole is slidably connected with several top blocks, several top blocks are evenly arranged in circumferential shape, one end of several top blocks is in contact with the inner wall of sliding sleeve, the other end of several top blocks is connected with fan-shaped screw ring, several fan-shaped screw rings are arranged in through-hole, the threaded section of bolt is threadedly connected between several fan-shaped screw rings.

[0006] Preferably, the top of sliding sleeve is connected with collar, the outer diameter of collar is same with the outer diameter of sliding sleeve, the inner diameter is same with the inner diameter of cylindrical block, and the collar is sleeved on the outside of spring.

[0007] Preferably, the bottom of sliding sleeve is connected with blocking ring, the outer diameter of blocking ring is same with the outer diameter of sliding sleeve, the inner diameter is same with the inner diameter of cylindrical block, and the blocking ring is sleeved on the lower part outer wall of cylindrical block.

[0008] Preferably, the outer wall of sliding sleeve, collar and blocking ring is set up with several buckling grooves, the buckling grooves are annular, and several buckling grooves are evenly arranged in the axial direction of sliding sleeve.

[0009] Preferably, several sliding holes are set up between through-hole and ring groove, each top block is slidably connected in corresponding sliding hole, and the cross section of sliding hole and top block is rectangular.

[0010] Preferably, the middle part of the sliding hole gradually reduces the inner hole specification of the sliding hole in the direction of the through hole, and the middle part of the top block gradually reduces the outer dimension of the top block in the direction of the connecting end of the fan-shaped screw ring.

[0011] Preferably, the upper end of the top block in contact with the sliding sleeve is in a circular arc shape.

[0012] The utility model discloses beneficial effect is:

[0013] In the utility model, the sliding sleeve is always moved downward by the elastic force of the spring, and the inner wall of the sliding sleeve limits the outward movement of the plurality of top blocks, so that the plurality of fan-shaped screw rings are inwards contracted to form a relatively complete internal thread, and the internal thread is matched with the threaded section of the bolt, so that the fastening effect between the bolt and the nut is realized, and by moving the sliding sleeve upwards, the top blocks are out of the limitation of the inner wall of the sliding sleeve, so that the fan-shaped screw rings can push the top blocks to move outward under the action of external force, so that the gap between the fan-shaped screw rings and the threaded section of the bolt is enlarged, so that the nut and the bolt can be separated without rotating the nut during the dismounting process, and when installing, the bolt can be wrapped by the mode, the number of rotation of the nut can be effectively reduced, and the dismounting between the bolt and the nut is more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structural schematic diagram of the fastener convenient to dismount is provided for the utility model;

[0015] Figure 2 A side view sectional structural schematic diagram of the fastener convenient to dismount is provided for the utility model;

[0016] Figure 3 A structural schematic diagram of the fastener convenient to dismount is provided for the utility model; Figure 2 An enlarged structural schematic diagram of A in the middle is provided;

[0017] Figure 4 A top block overhead view sectional structural schematic diagram of the fastener convenient to dismount is provided for the utility model.

[0018] In the drawing: 1, nut; 2, bolt; 3, hexagonal block; 4, cylindrical block; 5, through hole; 6, ring groove; 7, spring; 8, sliding sleeve; 9, top block; 10, fan-shaped screw ring; 11, sleeve ring; 12, stop ring; 13, buckle groove; 14, sliding hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0020] Reference Figures 1-4The utility model provides a fastener convenient to dismount, including nut 1 and bolt 2, nut 1 is composed of hexagonal block 3 and cylindrical block 4, and the same specification through -hole 5 is seted up on hexagonal block 3 and cylindrical block 4, and the outer wall of the middle part of cylindrical block 4 is seted up with ring groove 6, and the top of ring groove 6 is connected with spring 7, and the bottom of spring 7 is connected with sliding sleeve 8, and sliding sleeve 8 is slidably connected on ring groove 6, and the inner wall of through -hole 5 is slidably connected with a plurality of top block 9, and a plurality of top block 9 are evenly arranged in circumferential shape, and one end of a plurality of top block 9 is in contact with the inner wall of sliding sleeve 8, and the other end of a plurality of top block 9 is connected with sector screw ring 10, and a plurality of sector screw ring 10 are arranged in through -hole 5, and the threaded section of bolt 2 is threadedly connected between a plurality of sector screw ring 10.

[0021] The sliding sleeve 8 is always moved downward by the elastic force of the spring 7, the inner wall of the sliding sleeve 8 limits the outward movement of the plurality of top blocks 9, so that the plurality of sector screw rings 10 are inwards contracted to form a relatively complete internal thread, and are matched with the threaded section of the bolt 2, thereby realizing the fastening effect between the bolt 2 and the nut 1, and by moving the sliding sleeve 8 upward, the top block 9 loses the limitation of the inner wall of the sliding sleeve 8, so that the sector screw ring 10 can push the top block 9 to move outward under the action of external force, thereby making the gap between the sector screw ring 10 and the threaded section of the bolt 2 larger, so that the nut 1 and the bolt 2 can be separated without rotating the nut 1 during disassembly, and when installing, the bolt 2 can be wrapped in this way, which can effectively reduce the number of turns of the nut 1, so that the disassembly of the bolt 2 and the nut 1 is more convenient and fast.

[0022] Specifically, in the embodiment, the top end of the sliding sleeve 8 is connected with a sleeve ring 11, the outer diameter of the sleeve ring 11 is the same as the outer diameter of the sliding sleeve 8, the inner diameter of the sleeve ring 11 is the same as the inner diameter of the cylindrical block 4, the sleeve ring 11 is sleeved on the outside of the spring 7, and the sleeve ring 11 protects the spring 7.

[0023] Specifically, in the embodiment, the bottom end of the sliding sleeve 8 is connected with a stop ring 12, the outer diameter of the stop ring 12 is the same as the outer diameter of the sliding sleeve 8, the inner diameter of the stop ring 12 is the same as the inner diameter of the cylindrical block 4, the stop ring 12 is sleeved on the lower outer wall of the cylindrical block 4, and the stop ring 12 serves as an extension of the sliding sleeve 8, providing a space for the outward movement of the top block 9.

[0024] Specifically, in the embodiment, the outer wall of the sliding sleeve 8, the sleeve ring 11 and the stop ring 12 is provided with a plurality of buckle grooves 13, the buckle grooves 13 are annular, and the plurality of buckle grooves 13 are evenly arranged in the axial direction of the sliding sleeve 8, the buckle grooves 13 facilitate the installation personnel to exert a pulling force on the sliding sleeve 8, preventing the outer wall from being too smooth to cause slipping.

[0025] Specifically, in the embodiment, a plurality of sliding holes 14 are arranged between the through hole 5 and the annular groove 6, each top block 9 is slidably connected in the corresponding sliding hole 14, the cross section of the sliding hole 14 and the top block 9 is rectangular, which ensures the horizontal movement of the top block 9, and thus ensures the horizontal movement of the fan-shaped screw ring 10, and prevents the rotation from causing the mismatch with the screw thread of the bolt 2.

[0026] Specifically, in the embodiment, the inner hole size of the sliding hole 14 gradually decreases in the direction from the middle part of the sliding hole 14 to the through hole 5, and the outer size of the top block 9 gradually decreases in the direction from the middle part of the top block 9 to the end connected with the fan-shaped screw ring 10, which effectively prevents the top block 9 from separating from the cylindrical block 4 in the direction of the through hole 5, and improves the overall connection effect.

[0027] Specifically, in the embodiment, the upper end of the top block 9 in contact with the sliding sleeve 8 is arc-shaped, so that the downward movement of the sliding sleeve 8 can automatically push the top block 9 to move inward.

[0028] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A fastener that is easy to assemble and disassemble, comprising a nut (1) and a bolt (2), characterized in that: The nut (1) is composed of a hexagonal block (3) and a cylindrical block (4). The hexagonal block (3) and the cylindrical block (4) are provided with through holes (5) of the same specifications. The cylindrical block (4) has an annular groove (6) on its outer wall in the middle. A spring (7) is connected to the top of the annular groove (6). A sliding sleeve (8) is connected to the bottom of the spring (7). The sliding sleeve (8) is slidably connected to the annular groove (6). Several top blocks (9) are slidably connected to the inner wall of the through hole (5). The several top blocks (9) are evenly arranged in a circumferential shape. One end of each of the several top blocks (9) is in contact with the inner wall of the sliding sleeve (8). A fan-shaped helical ring (10) is connected to the other end of each of the several top blocks (9). The several fan-shaped helical rings (10) are arranged in the through hole (5). The threaded section of the bolt (2) is threadedly connected between the several fan-shaped helical rings (10).

2. The fastener for easy assembly and disassembly according to claim 1, characterized in that: A collar (11) is connected to the top of the sliding sleeve (8). The outer diameter of the collar (11) is the same as the outer diameter of the sliding sleeve (8), and the inner diameter is the same as the inner diameter of the cylindrical block (4). The collar (11) is sleeved on the outside of the spring (7).

3. The fastener for easy assembly and disassembly according to claim 1, characterized in that: A retaining ring (12) is connected to the bottom end of the sliding sleeve (8). The outer diameter of the retaining ring (12) is the same as the outer diameter of the sliding sleeve (8), and the inner diameter is the same as the inner diameter of the cylindrical block (4). The retaining ring (12) is sleeved on the lower outer wall of the cylindrical block (4).

4. The fastener for easy assembly and disassembly according to claim 1, characterized in that: The outer walls of the sliding sleeve (8), collar (11) and retaining ring (12) are provided with a number of fastening grooves (13), which are annular and are evenly arranged along the axial direction of the sliding sleeve (8).

5. The fastener for easy assembly and disassembly according to claim 1, characterized in that: A plurality of sliding holes (14) are provided between the through hole (5) and the annular groove (6), and each top block (9) is slidably connected in the corresponding sliding hole (14). The cross sections of the sliding hole (14) and the top block (9) are both rectangular.

6. A fastener that is easy to assemble and disassemble according to claim 5, characterized in that: The inner diameter of the sliding hole (14) gradually decreases towards the through hole (5) in the middle part, and the outer diameter of the top block (9) gradually decreases towards the connection end with the fan-shaped helical ring (10) in the middle part.

7. The fastener for easy assembly and disassembly according to claim 1, characterized in that: The upper end of the top block (9) that contacts the sliding sleeve (8) is arc-shaped.

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