Self-plugging rivet

Abstract

The utility model discloses a self-plugging rivet which comprises a rivet sleeve, a movable block is arranged on the outer side of the rivet sleeve and located above a first workpiece, a second workpiece is attached to the bottom of the first workpiece, the self-plugging rivet is provided with an isolating ring and a rubber sealing ring, and the thickness of the isolating ring is smaller than that of the rubber sealing ring. It is guaranteed that in the riveting process of the first workpiece and the second workpiece, the rubber sealing ring is extruded by the movable block to deform, the bottom of the rubber sealing ring makes close contact with the top of the first workpiece, and meanwhile the top of the rubber sealing ring makes close contact with the bottom of the movable block; the inner side of the rubber sealing ring is in close contact with the outer side of the rivet sleeve, the sealing performance between the first workpiece and the rivet sleeve is improved, the water leakage condition is prevented, meanwhile, under blocking of the isolating ring, the movable block cannot excessively extrude the rubber sealing ring, damage to the rubber sealing ring cannot be caused, and the service life of the first workpiece is prolonged. And the rubber sealing ring can effectively seal the first workpiece and the rivet sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of rivets, in particular to a blind rivet. Background Art

[0002] Blind rivets, also known as pull rivets, are a type of rivets used for single-sided riveting, but they must be riveted using a special tool, a rivet gun.

[0003] For example, the Chinese utility model patent with authorization announcement number CN216768023U discloses a rotary blind rivet, wherein a core rod is provided inside the shell, the core rod penetrates the inside of the shell and extends to the outside of the left and right walls of the shell, a nail head is provided on the right side of the core rod, and a hollow tube is provided on the left wall of the nail head, the inner wall of the hollow tube is provided with a first internal thread, the outer wall of the shell is provided with an external thread on the left side, a nail cap is screwed on the left side of the outer wall of the shell, a screw hole is provided inside the nail cap, and the screw hole has a second internal thread, and the outer wall of the core rod is provided with a twist-off groove on the right side, the twist-off groove is close to the nail head, and the twist-off groove is located inside the hollow tube. Through the cooperation between the hollow tube and the first internal thread inside the hollow tube, when the core rod is disconnected from the twist-off groove, a screw rod can be screwed into the hollow tube, and the screwed-in screw rod can replace the broken core rod, thereby ensuring the stability of the structure of the hollow part, and preventing debris from entering easily and the screw rod from falling off.

[0004] Although the above-mentioned authorized patent can rivet two workpieces together with blind rivets, there is a gap between the blind rivet and the workpiece, resulting in poor sealing. It is easy to leak when used on rainy days. Moreover, when the workpiece needs to be disassembled later, it is inconvenient to remove the blind rivet from the workpiece, which affects the disassembly efficiency of the workpiece.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original blind rivets. Utility Model Content

[0006] The purpose of the utility model is to provide a blind rivet to solve the problems raised by the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blind rivet, comprising a rivet sleeve, a movable block is arranged on the outer side of the rivet sleeve above a first workpiece, a second workpiece is fitted on the bottom of the first workpiece, through holes are provided on the first workpiece and the second workpiece, a rivet sleeve passes through the interior of the through hole, a core shaft passes through the interior of the rivet sleeve, an extrusion block is fixed to the lower end of the core shaft, a fracture groove is provided on the outer side of the core shaft near the extrusion block, an isolation ring is fixed on the bottom of the movable block located on the outer side of the rivet sleeve, a rubber sealing ring is provided inside the isolation ring, and the inner side of the rubber sealing ring is fitted with the outer side of the rivet sleeve.

[0008] Preferably, a fixing plate is fixed on the top of the movable block, a through slot is provided in the middle of the fixing plate, a groove is provided inside the through slot, and the upper end of the core shaft passes through the inside of the through slot.

[0009] Preferably, the top of the through slot is flush with the top of the fixing plate, and there are four grooves distributed at equal angles with respect to the central axis of the through slot.

[0010] Preferably, the movable block and the rivet sleeve are threadedly connected, and the rivet sleeve and the movable block form a "T"-shaped structure.

[0011] Preferably, the movable block is designed as a regular hexagonal structure.

[0012] Preferably, the thickness of the isolation ring is smaller than the thickness of the rubber sealing ring.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the core-pulling rivet is provided with an isolation ring and a rubber sealing ring, and the thickness of the isolation ring is less than the thickness of the rubber sealing ring, which ensures that during the riveting process between the first workpiece and the second workpiece, the rubber sealing ring is squeezed and deformed by the movable block, so that the bottom of the rubber sealing ring is in close contact with the top of the first workpiece, and at the same time, the top of the rubber sealing ring is in close contact with the bottom of the movable block, and the inner side of the rubber sealing ring is in close contact with the outer side of the rivet sleeve, thereby improving the sealing between the first workpiece and the rivet sleeve and preventing water leakage. At the same time, under the blocking of the isolation ring, the movable block will not cause excessive squeezing of the rubber sealing ring, and will not cause damage to the rubber sealing ring, so that the rubber sealing ring can effectively seal between the first workpiece and the rivet sleeve;

[0014] A movable block in a regular hexagonal shape is provided, and the movable block and the rivet sleeve are threadedly connected. Therefore, the movable block is fixed with a wrench, and the movable block is rotated with the wrench to remove the movable block from the rivet sleeve, thereby facilitating the removal of the rivet sleeve from the first workpiece and the second workpiece, thereby improving the disassembly efficiency of the first workpiece and the second workpiece. Since there are four grooves distributed at equal angles about the central axis of the through groove, a flat-blade screwdriver can be inserted into the inside of the groove, and the fixed plate and the movable block are rotated by the flat-blade screwdriver to remove the movable block from the rivet sleeve. In summary, the disassembly between the movable block and the rivet sleeve can be completed by using different tools, which is beneficial for workers to complete the disassembly of the first workpiece and the second workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the isolation ring and the rubber sealing ring of the utility model when viewed from above;

[0017] Figure 3This is a schematic diagram of the top view distribution structure of the grooves of the utility model;

[0018] Figure 4 This is a schematic diagram of the installation structure of the rivet sleeve of the utility model from a top view.

[0019] In the figure: 1, first workpiece; 2, second workpiece; 3, through hole; 4, rivet sleeve; 5, mandrel; 6, extrusion block; 7, fracture groove; 8, movable block; 9, isolation ring; 10, rubber sealing ring; 11, fixing plate; 12, through groove; 13, groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a blind rivet, including a rivet sleeve 4, a movable block 8 is arranged on the outer side of the rivet sleeve 4 above the first workpiece 1, a second workpiece 2 is fitted on the bottom of the first workpiece 1, through holes 3 are provided on the first workpiece 1 and the second workpiece 2, a rivet sleeve 4 is passed through the through hole 3, a core shaft 5 is passed through the inside of the rivet sleeve 4, an extrusion block 6 is fixed to the lower end of the core shaft 5, a fracture groove 7 is provided on the outer side of the core shaft 5 near the extrusion block 6, an isolation ring 9 is fixed on the bottom of the movable block 8 on the outer side of the rivet sleeve 4, a rubber sealing ring 10 is provided inside the isolation ring 9, and the inner side of the rubber sealing ring 10 is fitted with the outer side of the rivet sleeve 4.

[0022] A fixing plate 11 is fixed on the top of the movable block 8 . A through slot 12 is formed in the middle of the fixing plate 11 . A groove 13 is formed inside the through slot 12 . The upper end of the core shaft 5 passes through the inside of the through slot 12 .

[0023] The movable block 8 and the rivet sleeve 4 are threadedly connected, and the rivet sleeve 4 and the movable block 8 form a "T"-shaped structure. The movable block 8 is designed as a regular hexagonal structure. The movable block 8 can be rotated by a wrench so that the movable block 8 and the rivet sleeve 4 can be disassembled, thereby allowing the rivet sleeve 4 to be removed from the first workpiece 1 and the second workpiece 2, thereby facilitating the disassembly between the first workpiece 1 and the second workpiece 2.

[0024] The top of the through slot 12 is flush with the top of the fixed plate 11, and there are four grooves 13 distributed at equal angles about the central axis of the through slot 12. A flat-blade screwdriver is inserted into the inside of the groove 13 to twist the fixed plate 11 and the movable block 8 to rotate, so that the movable block 8 can be disassembled from the rivet sleeve 4, so that the disassembly between the movable block 8 and the rivet sleeve 4 can be completed by using different tools, which is beneficial for workers to complete the disassembly of the first workpiece 1 and the second workpiece 2.

[0025] The thickness of the isolation ring 9 is less than that of the rubber sealing ring 10, which ensures that after the movable block 8 presses the isolation ring 9 onto the first workpiece 1, the rubber sealing ring 10 is squeezed and deformed by the movable block 8, so that the bottom of the rubber sealing ring 10 is in close contact with the top of the first workpiece 1, and at the same time, the top of the rubber sealing ring 10 is in close contact with the bottom of the movable block 8, and the inner side of the rubber sealing ring 10 is in close contact with the outer side of the rivet sleeve 4, thereby improving the sealing between the first workpiece 1 and the rivet sleeve 4. At the same time, under the obstruction of the isolation ring 9, the movable block 8 will not over-extrude the rubber sealing ring 10, and the rubber sealing ring 10 will not be damaged, so that the rubber sealing ring 10 can effectively seal between the first workpiece 1 and the rivet sleeve 4.

[0026] Working principle: When using the blind rivet, first pass the rivet sleeve 4 through the inside of the through hole 3 on the first workpiece 1 and the second workpiece 2, and then use the rivet gun to pull the mandrel 5 and the extrusion block 6 upward, the extrusion block 6 deforms the bottom of the rivet sleeve 4, and at the same time the movable block 8 applies pressure to the isolation ring 9 and the rubber sealing ring 10, so that the bottom of the isolation ring 9 is in close contact with the top of the first workpiece 1, and the rubber sealing ring 10 is squeezed and deformed, completing the sealing between the first workpiece 1 and the rivet sleeve 4. When the mandrel 5 is subjected to sufficient pulling force from the rivet gun, it will cause the mandrel 5 to be divided into two sections at the fracture groove 7, and the riveting fixation between the first workpiece 1 and the second workpiece 2 is completed at this time;

[0027] When the first workpiece 1 and the second workpiece 2 need to be disassembled, fix the movable block 8 with a wrench, and rotate the movable block 8 with the wrench. Since the movable block 8 and the rivet sleeve 4 are threadedly connected, the movable block 8 is removed from the rivet sleeve 4, and then the rivet sleeve 4 is taken off the first workpiece 1 and the second workpiece 2 to complete the disassembly of the first workpiece 1 and the second workpiece 2. When the worker does not have a wrench, insert a flat-blade screwdriver into the groove 13, and use the flat-blade screwdriver to rotate the fixed plate 11 and the movable block 8, so that the movable block 8 and the rivet sleeve 4 are disassembled, and the disassembly of the first workpiece 1 and the second workpiece 2 is completed.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A blind rivet, comprising a rivet sleeve (4), characterized in that: A movable block (8) is arranged on the outer side of the rivet sleeve (4) above the first workpiece (1); a second workpiece (2) is fitted on the bottom of the first workpiece (1); a through hole (3) is provided on both the first workpiece (1) and the second workpiece (2); a rivet sleeve (4) is passed through the interior of the through hole (3); a core shaft (5) is passed through the interior of the rivet sleeve (4); an extrusion block (6) is fixed to the lower end of the core shaft (5); a fracture groove (7) is provided on the outer side of the core shaft (5) near the extrusion block (6); an isolation ring (9) is fixed on the bottom of the movable block (8) on the outer side of the rivet sleeve (4); a rubber sealing ring (10) is provided inside the isolation ring (9); the inner side of the rubber sealing ring (10) is fitted with the outer side of the rivet sleeve (4).

2. A blind rivet according to claim 1, characterized in that: A fixed plate (11) is fixed on the top of the movable block (8), a through slot (12) is provided in the middle of the fixed plate (11), a groove (13) is provided inside the through slot (12), and the upper end of the core shaft (5) passes through the interior of the through slot (12).

3. A blind rivet according to claim 2, characterized in that: The top of the through slot (12) is flush with the top of the fixing plate (11), and four grooves (13) are distributed at equal angles with respect to the central axis of the through slot (12).

4. A blind rivet according to claim 1, characterized in that: The movable block (8) and the rivet sleeve (4) are threadedly connected, and the rivet sleeve (4) and the movable block (8) form a "T"-shaped structure.

5. The blind rivet according to claim 1, characterized in that: The movable block (8) is designed as a regular hexagonal structure.

6. A blind rivet according to claim 1, characterized in that: The thickness of the isolation ring (9) is smaller than the thickness of the rubber sealing ring (10).

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