Extensible self-plugging rivet

Abstract

The utility model relates to the field of rivets, and discloses an extensible self-plugging rivet which comprises a rivet sleeve, a rivet rod is connected to the inner wall of the rivet sleeve in a sliding mode, a fracture groove is formed in the outer wall of the rivet rod, an extension assembly is arranged at the bottom end of the rivet sleeve, and the extension assembly comprises a connecting sleeve. The top end of the connecting sleeve is fixedly connected to the bottom end of the rivet sleeve, locking rings are fixedly connected to the two sides of the connecting sleeve, an extrusion groove is formed in the inner wall of the bottom end of the connecting sleeve, an expansion sleeve is arranged at the bottom end of the connecting sleeve, and a mounting groove is formed in the top end of the expansion sleeve. According to the self-plugging rivet, the expansion assembly and the rivet sleeve are used in cooperation, after the self-plugging rivet is expanded and installed, the rivet sleeve and the expansion sleeve are extruded, so that the connecting sleeve and the locking ring are inserted into the installation groove, the upper side and the lower side of the expansion sleeve are deformed, the number of acting points is increased, and the service life of the self-plugging rivet is prolonged. And the stability of rivet installation is effectively improved.

Description

Technical Field

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

[0002] In the field of riveting technology, blind rivets are an important connecting element, widely used in many industries such as construction, automobiles, aviation, shipbuilding, and machinery manufacturing. They use special riveting tools (such as manual, electric or pneumatic rivet guns) to pull the rivet core to expand the rivet body, thereby forming a firm connection between the connected parts.

[0003] When riveting operations are required, due to the thickness of the materials to be connected or the particularity of the structure, standard length blind rivets may not meet the needs. When the existing expandable blind rivets are used for riveting operations, the blind rivets have increased length, so that the blind rivets may not provide sufficient support, thereby reducing the stability of the installation of the blind rivets. Therefore, an expandable blind rivet is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an expandable blind rivet, which aims to improve the problem in the prior art that "due to the increased length of the blind rivet, the blind rivet may not provide sufficient support points, resulting in reduced stability in the installation of the blind rivet".

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an expandable blind rivet, comprising a rivet sleeve, a rivet rod is slidably connected to the inner wall of the rivet sleeve, a fracture groove is provided on the outer wall of the rivet rod, an expansion component is arranged at the bottom end of the rivet sleeve, the expansion component comprises a connecting sleeve, the top end of the connecting sleeve is fixedly connected to the bottom end of the rivet sleeve, locking rings are fixedly connected on both sides of the connecting sleeve, and an extrusion groove is provided on the inner wall of the bottom end of the connecting sleeve.

[0006] As a further description of the above technical solution:

[0007] An extension sleeve is arranged at the bottom end of the connecting sleeve, and a mounting groove is arranged at the top end of the extension sleeve.

[0008] As a further description of the above technical solution:

[0009] The outer wall of the bottom end of the connecting sleeve slides on the inner wall of the top end of the installation groove, and a fixing ring is fixedly connected to the middle of the bottom end of the installation groove.

[0010] As a further description of the above technical solution:

[0011] The top end of the fixing ring is arranged as an inclined surface.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the extension sleeve slides on the outer wall of the rivet rod, and the locking ring is configured in a semicircular ring shape.

[0014] As a further description of the above technical solution:

[0015] An extension component is arranged at the top end of the rivet rod, and the extension component comprises a connecting groove, which is opened at the top end of the rivet rod, and a connecting block is arranged on the inner wall of the connecting groove.

[0016] As a further description of the above technical solution:

[0017] The top of the connection block is fixedly connected with an extension rod, and the top of the connection block is fixedly connected with protrusions near both sides of the extension rod.

[0018] As a further description of the above technical solution:

[0019] A clamping groove is formed on the inner wall of the connecting groove near the top of the protrusion, and the top of the protrusion slides on the inner wall of the clamping groove.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by using the expansion assembly and the rivet sleeve in coordination, after the rivet device is expanded and installed, the rivet sleeve and the expansion sleeve are squeezed so that the connecting sleeve and the locking ring are inserted into the installation groove, thereby causing deformation of the upper and lower sides of the expansion sleeve, increasing the number of fulcrum points, and effectively improving the stability of the rivet installation.

[0022] 2. In the utility model, by using the extension assembly and the rivet rod in coordination, the rivet sleeve can be extended and the extension rod and the rivet rod can be quickly brought close together, and the length of the rivet rod can be adjusted to adapt to different needs and scenarios, thereby improving work efficiency and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the overall device in the utility model;

[0024] Figure 2 It is a schematic diagram of the split three-dimensional structure of the overall device in the utility model;

[0025] Figure 3 It is a front view three-dimensional structural cross-sectional diagram of the rivet sleeve and the extension sleeve in the utility model;

[0026] Figure 4 It is a partial cross-sectional schematic diagram of the front three-dimensional structure of the rivet rod in the utility model.

[0027] Legend:

[0028] 1. Rivet sleeve; 2. Rivet rod; 31. Connecting sleeve; 32. Locking ring; 33. Extrusion groove; 34. Extension sleeve; 35. Mounting groove; 36. Fixing ring; 41. Connecting groove; 42. Connecting block; 43. Bump; 44. Extension rod; 5. Fracture groove. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1 and Figure 2 The utility model provides an embodiment: an expandable blind rivet, including a rivet sleeve 1, which provides a sliding space for a rivet rod 2. The inner wall of the rivet sleeve 1 is slidably connected with the rivet rod 2, which can slide in the rivet sleeve 1 and serve as the main fixing component during installation. The outer wall of the rivet rod 2 is provided with a breaking groove 5. During the riveting process, the rivet rod 2 breaks at a predetermined position. An expansion component is provided at the bottom end of the rivet sleeve 1. The expansion component includes a connecting sleeve 31, which can be inserted into the installation groove 35 during installation. The rivet sleeve 1 and The extension sleeve 34 is connected, the top of the connecting sleeve 31 is fixedly connected to the bottom end of the rivet sleeve 1, and locking rings 32 are fixedly connected on both sides of the connecting sleeve 31. The locking rings 32 are arranged on the inner and outer sides of the connecting sleeve 31. During installation, the locking rings 32 can be inserted into the installation groove 35 to squeeze the extension sleeve 34, thereby causing the extension sleeve 34 to deform, increasing the fulcrum points, and thus improving its stability. An extrusion groove 33 is provided on the inner wall of the bottom end of the connecting sleeve 31, which is used in conjunction with the fixing ring 36 to improve the stability of the connection between the rivet sleeve 1 and the extension sleeve 34.

[0031] Reference Figure 2 and Figure 3The bottom end of the connecting sleeve 31 is provided with an extension sleeve 34 for connecting the connecting sleeve 31, so as to limit the rivet sleeve 1. The top end of the extension sleeve 34 is provided with a mounting groove 35 for sleeve connection with the connecting sleeve 31. During the connection process, the outer wall of the extension sleeve 34 is deformed, and the outer wall of the bottom end of the connecting sleeve 31 slides on the inner wall of the top end of the mounting groove 35. A fixing ring 36 is fixedly connected to the middle of the bottom end of the mounting groove 35. The top end of the fixing ring 36 is set as an inclined surface, and is inserted into the extrusion groove 33 through the inclined surface. The two sides of the bottom end of the connecting sleeve 31 are slid toward the two sides of the fixing ring 36 respectively, which increases the friction between the connecting sleeve 31 and the extension sleeve 34 and enables the extension sleeve 34 to produce a certain deformation, thereby increasing the number of force application points and effectively improving the stability of the installation of the rivet device. The inner wall of the extension sleeve 34 slides on the outer wall of the rivet rod 2, and the extension sleeve 34 is limited by the bottom end of the rivet rod 2. The locking ring 32 is set to a semi-arc shape to fix the extension sleeve 34 during the installation process to prevent it from slipping.

[0032] Reference Figure 2 and Figure 4 An extension component is provided at the top of the rivet rod 2, and the extension component includes a connecting groove 41. The connecting groove 41 is opened at the top of the rivet rod 2 for connecting with other parts of the extension component. A connecting block 42 is provided on the inner wall of the connecting groove 41 for limiting the extension rod 44. The top of the connecting block 42 is fixedly connected with the extension rod 44, and the length of the rivet rod 2 can be increased when needed, so as to adapt to different needs and scenarios and improve work efficiency and practicality. The top of the connecting block 42 is fixedly connected with a protrusion 43 on both sides of the extension rod 44, which is used to provide stability and positioning for the connecting block 42. A card slot is opened on the inner wall of the connecting groove 41 near the top of the protrusion 43, and the top of the protrusion 43 slides on the inner wall of the card slot to ensure the stability between the extension rod 44 and the rivet rod 2.

[0033] Working principle: When in use, first insert the extension rod 44 into the inner wall of the connecting groove 41 at the top of the rivet rod 2 until the bottom of the connecting groove 41, then rotate the extension rod 44 to drive the connecting block 42 to rotate on the inner wall of the connecting groove 41, and slide the protrusion 43 at the top of the connecting block 42 in the groove on the inner wall of the connecting groove 41 to limit the connection block 42, thereby limiting the extension rod 44, and then insert the extension sleeve 34 from the top of the extension rod 44, and then insert the rivet sleeve 1 from the top of the extension rod 44, so that the outer wall of the bottom end of the connecting sleeve 31 slides into the inner wall of the mounting groove 35 on the extension sleeve 34.

[0034] At this time, the device is placed in the hole that needs to be fixed, and the expansion rod 44 is fixed and stretched by the rivet gun, driving the rivet rod 2 to extrude the inner wall of the bottom end of the expansion sleeve 34, causing the bottom end of the expansion sleeve 34 to deform, and at the same time driving the connecting sleeve 31 to insert into the inner wall of the installation groove 35, and at the same time, the connecting sleeve 31 drives the locking ring 32 to extrude the inner wall of the installation groove 35, causing the outer wall of the expansion sleeve 34 close to the locking ring 32 to deform, thereby increasing the force application point and improving the installation stability. While the connecting sleeve 31 slides, the fixing ring 36 is inserted into the inner wall of the extrusion groove 33, so that the bottom end of the connecting sleeve 31 is wrapped around the two sides of the fixing ring 36, thereby improving the stability of the connection between the connecting sleeve 31 and the expansion sleeve 34. At the same time, the expansion sleeve 34 can produce a certain deformation to improve the stability. While driving the rivet rod 2 to stretch, the expansion rod 44 causes the rivet rod 2 to break from the breaking groove 5, and the installation of the rivet is completed.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. An expandable blind rivet, comprising a rivet sleeve (1), characterized in that: The inner wall of the rivet sleeve (1) is slidably connected to a rivet rod (2), the outer wall of the rivet rod (2) is provided with a fracture groove (5), the bottom end of the rivet sleeve (1) is provided with an extension component, the extension component comprises a connecting sleeve (31), the top end of the connecting sleeve (31) is fixedly connected to the bottom end of the rivet sleeve (1), locking rings (32) are fixedly connected to both sides of the connecting sleeve (31), and the inner wall of the bottom end of the connecting sleeve (31) is provided with an extrusion groove (33).

2. The expandable blind rivet according to claim 1, characterized in that: An extension sleeve (34) is provided at the bottom end of the connecting sleeve (31), and a mounting groove (35) is provided at the top end of the extension sleeve (34).

3. The expandable blind rivet according to claim 1, characterized in that: The outer wall of the bottom end of the connecting sleeve (31) slides on the inner wall of the top end of the mounting groove (35), and a fixing ring (36) is fixedly connected to the middle of the bottom end of the mounting groove (35).

4. The expandable blind rivet according to claim 3, characterized in that: The top end of the fixing ring (36) is arranged as an inclined surface.

5. The expandable blind rivet according to claim 2, characterized in that: The inner wall of the expansion sleeve (34) slides on the outer wall of the rivet rod (2), and the locking ring (32) is configured in a semicircular ring shape.

6. The expandable blind rivet according to claim 1, characterized in that: An extension component is provided at the top end of the rivet rod (2), the extension component comprising a connection groove (41), the connection groove (41) is opened at the top end of the rivet rod (2), and a connection block (42) is provided on the inner wall of the connection groove (41).

7. The expandable blind rivet according to claim 6, characterized in that: The top end of the connection block (42) is fixedly connected to an extension rod (44), and the top end of the connection block (42) is fixedly connected to protrusions (43) on both sides close to the extension rod (44).

8. The expandable blind rivet according to claim 7, characterized in that: A clamping groove is provided on the inner wall of the connection groove (41) near the top of the protrusion (43), and the top of the protrusion (43) slides on the inner wall of the clamping groove.

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