Plug self-plugging rivet for sealing air hole

Abstract

The plug self-plugging rivet comprises a rivet core body and a cap body, the cap body is provided with a hollow sleeve through which the rivet core body can penetrate, the rivet core body penetrates through the hollow sleeve and is connected with the cap body in a matched mode, the rivet core body is provided with a plug part, a fracture part and a core rod part which are integrally formed, and the fracture part is connected with the core rod part. The breaking part is formed between the plug part and the core rod part, the breaking part is installed in an inner cavity of the hollow sleeve in a matched mode, a blocking edge bent inwards is formed at the tail of the hollow sleeve, and the blocking edge is arranged to be capable of being tightly matched with the breaking part. By means of the mode, the plug self-plugging rivet for sealing the air hole is simple in structure, easy to install, low in cost, stable in connection and smoother and more stable in extrusion, the situations of blocking and cracking are avoided, efficient sealing performance can be guaranteed in the whole rivet pulling process, and it is guaranteed that plugging of the air hole is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a plugging core-pulling rivet for pore sealing. Background Art

[0002] Plug rivets are widely used for sealing redundant fluid passages in engines, hydraulic and pneumatic components (valve groups, oil cylinders or air cylinders, etc.). They can replace various comprehensive plugging methods such as steel ball plugs, conical screw plugs, welding pin plugs and screw plugs with sealing pads. Their superiority is particularly evident in the sealing of deep holes.

[0003] In the prior art, plug rivets generally consist of a core body and a cap body. When fixing, the core is pulled by a special rivet gun to expand the rivet body for riveting. However, after the core of the existing plug rivet is pulled out, the connection between the cap body and the core body at the break point is not airtight, and there is still a partial gap, and the overall sealing connection effect is not good. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a plugging core-pulling rivet for pore sealing. The product has a simple structure, is easy to install, has a low cost, and has a firm connection. It is smoother and more stable during extrusion, and can avoid jamming and cracking. The entire riveting process can ensure efficient sealing, ensuring that the sealing of the pores is stable and reliable.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a plugging core-pulling rivet for air hole sealing, comprising: a nail core body and a cap body, wherein the cap body has a hollow sleeve through which the nail core body can pass, and the nail core body passes through the hollow sleeve and is connected with the cap body.

[0006] The nail core body comprises an integrally formed plugging portion, a breaking portion and a core rod portion, wherein the breaking portion is formed between the plugging portion and the core rod portion, and the breaking portion is cooperated and installed in the inner cavity of the hollow sleeve, and an inwardly bent blocking edge is formed at the tail portion of the hollow sleeve, and the blocking edge is configured to be able to fit tightly with the breaking portion.

[0007] In a preferred embodiment of the present invention, the plugging portion is arranged in a truncated cone shape, including a small diameter end and a large diameter end arranged oppositely, wherein the small diameter end is arranged adjacent to the hollow sleeve head.

[0008] In a preferred embodiment of the present invention, the radial dimension of the large diameter end of the plugging portion is greater than the radial dimension of the breaking portion.

[0009] In a preferred embodiment of the present invention, the head of the hollow sleeve is truncated cone-shaped, and the inner cavity of the hollow sleeve is in the shape of a stepped hole.

[0010] In a preferred embodiment of the present invention, the transition between the small diameter end of the plugging portion and the head of the hollow sleeve is in an arc shape.

[0011] In a preferred embodiment of the present invention, reinforcing ribs are evenly distributed at intervals on the periphery of the fracture portion, and the tail ends of the reinforcing ribs extend out of the hollow sleeve.

[0012] In a preferred embodiment of the present invention, a plurality of circles of anti-slip teeth are evenly distributed on the outer circumference of the core rod portion of the nail core body, and the bottom end of the core rod portion is arranged in a truncated cone shape.

[0013] The beneficial effects of the utility model are:

[0014] It is widely used in various high-pressure and low-pressure air holes, most of which are used in engines and other parts. It is easy to install and can be installed on one side. It does not require other matching parts and has low cost. The product structure is simple and the cost is low. The connection is stable and the extrusion is smoother and more stable to avoid jamming and cracking. The entire riveting process can ensure efficient sealing and ensure that the sealing of the air holes is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of the nail core body of the plugging core-pulling rivet for pore sealing of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a preferred embodiment of the cap body of the plugging core-pulling rivet for pore sealing of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a preferred embodiment of the connection between the rivet core body and the cap body of the plugging core blind rivet for pore sealing of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a preferred embodiment of the utility model in which the plugging core-pulling rivet for pore sealing cooperates with the pore plugging;

[0020] The markings of the components in the accompanying drawings are as follows:

[0021] 100, nail core body, 110, plugging head, 111, small diameter end, 112, large diameter end, 120, fracture part, 121, reinforcing rib, 130, core rod part, 131, anti-slip teeth, 140, transition part,

[0022] 200, cap body, 210, hollow sleeve, 211, blocking edge. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 4 The utility model relates to a preferred embodiment of a plugging core-pulling rivet for pore sealing.

[0026] The pore sealing plugging blind rivet comprises: a nail core body 100 and a cap body 200 . The cap body 200 has a hollow sleeve 210 through which the nail core body can pass. The nail core body 100 passes through the hollow sleeve 210 to be matched and connected with the cap body 200 .

[0027] In an exemplary embodiment, the nail core body 100 has an integrally formed plugging portion 110 , a breaking portion 120 and a core rod portion 130 , wherein the breaking portion 120 is formed between the plugging portion 110 and the core rod portion 130 , and the breaking portion 120 is cooperatively installed in the inner cavity of the hollow sleeve 210 .

[0028] In an exemplary embodiment, the plugging portion 110 is configured in a truncated cone shape, including a small diameter end 111 and an oppositely disposed large diameter end 112 , wherein the small diameter end 111 is disposed adjacent to the head of the hollow sleeve 210 .

[0029] Furthermore, the transition point 140 between the small diameter end 111 of the plugging part 110 and the head of the hollow sleeve 210 is in an arc shape, so that when the nail core body 100 is squeezed toward the hollow sleeve 210 by the pulling force of the rivet gun, it can be smoother and more stable, avoiding jamming and cracking.

[0030] Furthermore, the head of the hollow sleeve 210 is truncated cone-shaped, the inner cavity of the hollow sleeve 210 is a stepped hole, and the radial dimension of the large diameter end 112 of the plugging part 110 is larger than the radial dimension of the broken part 120, so that the expansion of the cap body 200 is smoother, ensuring that the pores can be reliably sealed.

[0031] Furthermore, the outer periphery of the breaking portion 120 is evenly distributed with spaced reinforcing ribs 121, and the tail end of the reinforcing rib 121 extends out of the hollow sleeve 210, that is, the length of the reinforcing rib 121 is greater than the height of the hollow sleeve 210. This can improve the connection stability between the plugging portion 110 and the core rod portion 130 on the one hand, and ensure that the entire nail core body will not be easily broken when pulled by the rivet gun on the other hand.

[0032] In an exemplary embodiment, a blocking edge 211 bent inwardly is formed at the rear of the hollow sleeve 210 , and the blocking edge 211 is configured to be tightly matched with the breaking portion 120 .

[0033] In this way, when the nail core body 100 is squeezed downward by the pulling force of the rivet gun, it can ensure that the cap body 200 is always closely matched with the broken part 120 during the expansion process until the whole action is completed. The plugging part 110 and the expanded cap body 200 can fully block the air hole, and the whole process ensures strong sealing, ensuring that the sealing of the air hole is stable and reliable.

[0034] Furthermore, the outer circumference of the core rod portion 130 of the nail core body 100 is evenly distributed with a plurality of circles of anti-slip teeth 131, and the bottom end of the core rod portion 130 is arranged in a truncated cone shape, which will not easily slide during the riveting process to cause the nail core body to break, thereby ensuring the stability and reliability of the riveting process.

[0035] The beneficial effects of the plugging core-pulling rivet for pore sealing of the utility model are:

[0036] Easy installation, can be installed on one side, no other matching parts are required, low cost, simple product structure and low cost;

[0037] The connection is firm, and the extrusion is smoother and more stable, avoiding jamming and cracking;

[0038] The entire riveting process can guarantee efficient sealing and ensure that the sealing of the pores is stable and reliable.

[0039] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A plugging blind rivet for pore sealing, characterized in that: include: Nail core body and cap body, The cap body has a hollow sleeve through which the nail core body can pass, and the nail core body passes through the hollow sleeve and is connected with the cap body in cooperation. The nail core body comprises an integrally formed plugging portion, a breaking portion and a core rod portion, wherein the breaking portion is formed between the plugging portion and the core rod portion, and the breaking portion is cooperated and installed in the inner cavity of the hollow sleeve, and an inwardly bent blocking edge is formed at the tail portion of the hollow sleeve, and the blocking edge is configured to be able to fit tightly with the breaking portion.

2. The blind rivet for pore sealing according to claim 1, characterized in that: The plugging portion is arranged in a truncated cone shape, including a small-diameter end and a large-diameter end arranged oppositely, wherein the small-diameter end is arranged adjacent to the hollow sleeve head.

3. The blind rivet for pore sealing according to claim 1, characterized in that: The radial dimension of the large diameter end of the plugging portion is greater than the radial dimension of the breaking portion.

4. The blind rivet for pore sealing according to claim 1, characterized in that: The head of the hollow sleeve is in a truncated cone shape, and the inner cavity of the hollow sleeve is in a stepped hole shape.

5. The blind rivet for pore sealing according to claim 1, characterized in that: The transition point between the small diameter end of the plugging part and the head of the hollow sleeve is in an arc shape.

6. The blind rivet for pore sealing according to claim 1, characterized in that: The outer periphery of the fracture portion is evenly distributed with reinforcing ribs arranged at intervals, and the tail ends of the reinforcing ribs extend out of the hollow sleeve.

7. The blind rivet for pore sealing according to claim 1, characterized in that: The outer circumference of the core rod portion of the nail core body is evenly distributed with a plurality of circles of anti-slip teeth, and the bottom end of the core rod portion is arranged in a truncated cone shape.

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