Self-plugging rivet

Abstract

The utility model discloses a self-plugging rivet, and particularly relates to the technical field of rivets, the self-plugging rivet comprises a rivet cap and an expansion pipe, one end of the expansion pipe far away from the rivet cap is movably connected with an expansion head, the bottom of the expansion head is fixedly connected with a rivet core, the rivet core is internally provided with a cavity communicated with the outside, the cavity is internally provided with an extrusion block, and the extrusion block is fixedly connected with the rivet cap. A breaking block is fixedly connected to the bottom of the extrusion block, a pull rod is fixedly connected to the bottom of the breaking block, a fixing assembly is arranged at the joint of the rivet core and the expansion pipe, and extension assemblies are arranged on the two sides of the top of the rivet cap. According to the rivet, the connecting strength of the rivet core and the expansion pipe can be effectively enhanced, the service life of the rivet is prolonged, and the size of the rivet cap can be adjusted, so that the rivet can be used for riveting connecting pieces with different holes.

Description

Technical Field

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

[0002] Blind rivets are a type of rivet used for single-sided riveting, but they must be riveted using a special tool - a rivet gun (manual, electric, or pneumatic). During riveting, the rivet core is pulled by a special rivet gun to expand the rivet body and play a riveting role. This type of rivet is particularly suitable for riveting occasions where it is inconvenient to use ordinary rivets (which must be riveted from both sides), so it is widely used in construction, automobiles, ships, aircraft, machinery, electrical appliances, furniture and other products. Among them, open-type flat round head blind rivets are the most widely used, countersunk head blind rivets are suitable for riveting occasions that require smooth surfaces, and closed-type blind rivets are suitable for riveting occasions that require higher loads and certain sealing properties.

[0003] Today's blind rivets can only rivet connectors through the deformation of the expansion tube. Since the strength of the deformable material itself is not high enough, the strength of the blind rivets will gradually decrease with the increase of usage time, thereby shortening the service life. At the same time, most blind rivets are fixed in size and cannot be used to rivet connectors with larger holes, so their scope of application is small. Utility Model Content

[0004] Technical problems solved: The service life of deformation riveting is short and it is impossible to rivet holes of different sizes.

[0005] In view of the deficiencies in the prior art, the utility model provides a blind rivet, which solves the problems mentioned in the background technology.

[0006] Technical solution:

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A blind rivet comprises a nail cap and an expansion tube, wherein an expansion head is movably connected to one end of the expansion tube away from the nail cap, a nail core is fixedly connected to the bottom of the expansion head, a cavity connected to the outside is provided inside the nail core, an extrusion block is arranged inside the cavity, a breaking block is fixedly connected to the bottom of the extrusion block, a pull rod is fixedly connected to the bottom of the breaking block, a fixing component is arranged at the connection between the nail core and the expansion tube, and extension components are arranged on both sides of the top of the nail cap.

[0009] In a possible implementation, the fixing assembly includes a fixing hole, a through hole, a fixing rod, a limiting groove and a limiting block, the fixing holes are opened on the inner walls on both sides of the expansion tube, the through holes penetrate the inner walls on both sides of the bottom of the cavity, the fixing rod is movably connected to the through hole and is adapted to the size of the fixing hole, the inner end of the fixing rod and the bottom of the extrusion block are both hemispherical, the limiting groove is opened on the top and bottom inner walls of the through hole, and the limiting block is fixedly connected to the top and bottom of the fixing rod and slidably connected to the limiting groove.

[0010] In a possible implementation, the fixing assembly further includes a positioning groove and a positioning block, the positioning groove is L-shaped and is opened on the inner walls on both sides of the cavity, and the positioning block is fixedly connected to both sides of the extrusion block and slidably connected to the positioning groove.

[0011] In one possible implementation, the extension component includes a mounting groove, a mounting block, a guide groove and a guide block, the mounting groove is opened on both sides of the top of the nail cap, the mounting block is movably connected to the mounting groove, the guide groove is opened on the inner walls on both sides of the mounting groove, and the guide block is fixedly connected to both sides of the mounting block and slidably connected to the guide groove.

[0012] In a possible implementation, the extension assembly also includes a connecting groove, an adjustment block, a socket, a mounting seat and an insertion rod, the connecting groove is opened at the bottom of the nail cap and is connected to the mounting groove, the adjustment block is fixedly connected to the bottom of the mounting block and is slidably connected to the connecting groove, the sockets are provided in several groups and are opened on both sides of the connecting groove, the mounting seat is sleeved and slidably connected to the outer periphery of the adjustment block, and the insertion rod is fixedly connected to both sides of the top of the mounting seat and is adapted to the size of the socket.

[0013] In a possible implementation, the extension assembly also includes a slide groove, a slider and a spring, the slide groove is opened on one side surface of the adjustment block, the slider is fixedly connected to the inner side of the mounting seat and is slidably connected to the slide groove, and the spring is fixedly installed inside the slide groove and its two ends are respectively fixedly connected to the bottom of the slider and the inner wall of the bottom of the slide groove.

[0014] Beneficial effects:

[0015] First, by providing a fixing assembly, when it is necessary to rivet the connecting piece, first push the fixing rod toward the inside of the cavity to make it immersed in the through hole, then insert the nail core into the expansion tube, and then pass the expansion tube through the connecting piece to be riveted, then pull the pull rod downward to drive the extrusion block to move downward along the cavity, when the extrusion block contacts the fixing rod, the extrusion block will push the fixing rod out to both sides, when the expansion head squeezes the expansion tube to fit tightly with the connecting piece, the extrusion block moves to the bottom of the cavity and the positioning block slides to the bottom of the positioning groove, the fixing rod and the fixing hole are on the same axis and inserted into the fixing hole, then rotate the pull rod to drive the extrusion block to rotate synchronously through the breaking block, when the positioning block rotates to the innermost side of the bottom of the positioning groove with the extrusion block, the extrusion block can be fixed in the current position, then pull the pull rod downward again until the breaking block breaks, at this time the riveting of the connecting piece can be completed, this design can effectively enhance the connection strength between the nail core and the expansion tube, thereby extending the service life of the rivet;

[0016] Second, by providing an extension component, the mounting seat is pulled downward to drive the slider to slide downward along the slide groove and squeeze the spring. When the insertion rod moves downward with the mounting seat to be removed from the socket, the adjustment block is slid along the connecting groove to drive the mounting block to move synchronously along the mounting groove. When the mounting block moves to a point where the length between it and the nail cap is greater than the diameter of the hole, the mounting seat is released, the spring rebounds and drives the mounting seat to move upward through the slider. When the insertion rod moves upward with the mounting seat to be inserted into the socket at the current position, the mounting block can be fixed at the current position. This design can adjust the size of the nail cap so that it can rivet connectors with different holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the expansion head and nail core structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the pull rod and extrusion block structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the expansion tube structure of the utility model;

[0022] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic diagram of the nail cap structure of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the regulating block of the utility model.

[0025] Description of reference numerals:

[0026] 1. Nail cap; 2. Expansion tube; 3. Expansion head; 4. Nail core; 5. Cavity; 6. Extrusion block; 7. Breaking block; 8. Pull rod; 9. Fixing assembly; 91. Fixing hole; 92. Through hole; 93. Fixing rod; 94. Limiting groove; 95. Limiting block; 96. Positioning groove; 97. Positioning block; 10. Extension assembly; 101. Mounting groove; 102. Mounting block; 103. Guide groove; 104. Guide block; 105. Connecting groove; 106. Adjusting block; 107. Socket; 108. Mounting seat; 109. Insert rod; 1010. Slide groove; 1011. Slider; 1012. Spring. DETAILED DESCRIPTION

[0027] The embodiments of the present application solve the problems in the prior art by providing a blind rivet.

[0028] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0029] The specific structure of this embodiment is as follows: Figures 1 to 7 As shown, a blind rivet comprises a nail cap 1 and an expansion tube 2, wherein an expansion head 3 is movably connected to one end of the expansion tube 2 away from the nail cap 1, a nail core 4 is fixedly connected to the bottom of the expansion head 3, a cavity 5 connected to the outside is opened inside the nail core 4, an extrusion block 6 is arranged inside the cavity 5, a breaking block 7 is fixedly connected to the bottom of the extrusion block 6, a pull rod 8 is fixedly connected to the bottom of the breaking block 7, a fixing component 9 is arranged at the connection between the nail core 4 and the expansion tube 2, and extension components 10 are arranged on both sides of the top of the nail cap 1.

[0030] In some examples, the fixing assembly 9 includes a fixing hole 91, a through hole 92, a fixing rod 93, a limiting groove 94 and a limiting block 95. The fixing hole 91 is opened on the inner walls on both sides of the expansion tube 2, and the through hole 92 passes through the inner walls on both sides of the bottom of the cavity 5. The fixing rod 93 is movably connected to the through hole 92 and is adapted to the size of the fixing hole 91. The inner end of the fixing rod 93 and the bottom of the extrusion block 6 are both hemispherical. The limiting groove 94 is opened on the top and bottom inner walls of the through hole 92. The limiting block 95 is fixedly connected to the top and bottom of the fixing rod 93 and is slidably connected to the limiting groove 94. The fixing rod 93 can be inserted into the fixing hole 91 to fix the nail core 4 in the current position, thereby increasing the connection strength between the nail core 4 and the expansion tube 2.

[0031] In some examples, the fixing component 9 also includes a positioning groove 96 and a positioning block 97. The positioning groove 96 is L-shaped and is opened on the inner walls on both sides of the cavity 5. The positioning block 97 is fixedly connected to both sides of the extrusion block 6 and is slidably connected to the positioning groove 96. Pulling the extrusion block 6 downward can drive the positioning block 97 to slide downward along the positioning groove 96. When the positioning block 97 slides to the bottom, the extrusion block 6 is rotated to drive the positioning block 97 to rotate synchronously along the positioning groove 96. When the positioning block 97 is rotated to the innermost side of the bottom of the positioning groove 96, the extrusion block 6 can be fixed at the current position.

[0032] In some examples, the extension component 10 includes a mounting groove 101, a mounting block 102, a guide groove 103 and a guide block 104. The mounting groove 101 is opened on both sides of the top of the nail cap 1, the mounting block 102 is movably connected to the mounting groove 101, and the guide groove 103 is opened on the inner walls on both sides of the mounting groove 101. The guide block 104 is fixedly connected to both sides of the mounting block 102 and is slidably connected to the guide groove 103. The mounting block 102 can be moved outward along the mounting groove 101 to adjust the length of the nail cap 1 so that it can be riveted to holes of different sizes. During the movement of the mounting block 102, the guide block 104 slides synchronously along the guide groove 103 and limits the moving trajectory of the mounting block 102.

[0033] In some examples, the extension component 10 also includes a connecting groove 105, an adjustment block 106, a socket 107, a mounting seat 108 and an insertion rod 109. The connecting groove 105 is opened at the bottom of the nail cap 1 and is connected to the mounting groove 101. The adjustment block 106 is fixedly connected to the bottom of the mounting block 102 and is slidably connected to the connecting groove 105. The socket 107 is provided in several groups and is opened on both sides of the connecting groove 105. The mounting seat 108 is sleeved and slidably connected to the outer periphery of the adjusting block 106. The insertion rod 109 is fixedly connected to both sides of the top of the mounting seat 108 and is adapted to the size of the socket 107. By removing the insertion rod 109 from the socket 107, the adjustment block 106 can be slid along the connecting groove 105 and the position of the mounting block 102 can be adjusted. By inserting the insertion rod 109 into the socket 107, the mounting block 102 can be fixed at the current position.

[0034] In some examples, the extension component 10 also includes a slide groove 1010, a slider 1011 and a spring 1012. The slide groove 1010 is opened on one side surface of the adjustment block 106, the slider 1011 is fixedly connected to the inner side of the mounting seat 108 and is slidably connected to the slide groove 1010, and the spring 1012 is fixedly installed inside the slide groove 1010 and its two ends are respectively fixedly connected to the bottom of the slider 1011 and the inner wall of the bottom of the slide groove 1010. Pulling the mounting seat 108 downward can drive the slider 1011 to slide downward along the slide groove 1010 and squeeze the spring 1012. Release the mounting seat 108, the spring 1012 rebounds and drives the mounting seat 108 to move upward through the slider 1011.

[0035] In a specific application scenario, first push the fixing rod 93 toward the inside of the cavity 5 to make it sink into the through hole 92, then insert the nail core 4 into the expansion tube 2, and then pass the expansion tube 2 through the connecting piece to be riveted, then pull the pull rod 8 downward to drive the extrusion block 6 to move downward along the cavity 5. When the extrusion block 6 contacts the fixing rod 93, since the inner end of the fixing rod 93 and the bottom of the extrusion block 6 are both hemispherical, the extrusion block 6 will push the fixing rod 93 out to both sides. In this process, the limit block 95 slides synchronously to both sides along the limit groove 94 and fixes the fixing rod 93. The positioning block 97 is preferably a stopper, so as to prevent the fixing rod 93 from falling out of the through hole 92. When the expansion head 3 squeezes the expansion tube 2 to fit tightly with the connector, the extrusion block 6 moves to the bottom of the cavity 5 and the positioning block 97 slides to the bottom of the positioning groove 96. The fixing rod 93 is on the same axis as the fixing hole 91 and is inserted into the fixing hole 91. Then, the pull rod 8 is rotated to drive the extrusion block 6 to rotate synchronously through the breaking block 7. When the positioning block 97 rotates to the innermost side of the bottom of the positioning groove 96 with the extrusion block 6, the extrusion block 6 can be fixed in the current position. Then, the pull rod 8 is pulled down again until the breaking block 7 is broken, and the riveting of the connecting piece can be completed at this time. At the same time, the fixing rod 93 and the fixing hole 91 can effectively increase the connection strength between the nail core 4 and the expansion tube 2, thereby extending the service life of the rivet. When it is necessary to rivet the connecting pieces with different holes, first pull the mounting seat 108 downward to drive the slider 1011 to slide downward along the slide groove 1010 and squeeze the spring 1012. When the insertion rod 109 moves downward with the mounting seat 108 to move out of the insertion hole 107, the adjustment block 106 is slid along the connecting groove 105 to drive the mounting block 102 along The mounting groove 101 moves synchronously, during which the guide block 104 slides synchronously along the guide groove 103 and limits the moving trajectory of the mounting block 102. When the mounting block 102 moves to a point where the length thereof and the nail cap 1 is greater than the diameter of the hole, the mounting seat 108 is released, the spring 1012 rebounds and drives the mounting seat 108 to move upward through the slider 1011. When the insertion rod 109 moves upward with the mounting seat 108 to be inserted into the socket 107 at the current position, the mounting block 102 can be fixed at the current position, and the hole of the new size can be riveted at this time.

[0036] By adopting the above technical solution: not only can the connection strength between the nail core and the expansion tube be effectively enhanced and the service life of the rivet be extended, but the size of the nail cap can also be adjusted so that it can be riveted to connectors with different holes.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the scope of protection of the present invention.

Claims

1. A blind rivet, comprising a rivet cap (1) and an expansion tube (2), characterized in that: The expansion tube (2) is movably connected to an expansion head (3) at one end away from the nail cap (1); a nail core (4) is fixedly connected to the bottom of the expansion head (3); a cavity (5) communicating with the outside is provided inside the nail core (4); an extrusion block (6) is provided inside the cavity (5); a breaking block (7) is fixedly connected to the bottom of the extrusion block (6); a pull rod (8) is fixedly connected to the bottom of the breaking block (7); a fixing component (9) is provided at the connection between the nail core (4) and the expansion tube (2); and extension components (10) are provided on both sides of the top of the nail cap (1).

2. A blind rivet according to claim 1, characterized in that: The fixing assembly (9) comprises a fixing hole (91), a through hole (92), a fixing rod (93), a limiting groove (94) and a limiting block (95); the fixing hole (91) is formed on the inner walls on both sides of the expansion tube (2); the through hole (92) penetrates the inner walls on both sides of the bottom of the cavity (5); the fixing rod (93) is movably connected to the through hole (92) and is adapted to the size of the fixing hole (91); the inner end of the fixing rod (93) and the bottom of the extrusion block (6) are both hemispherical; the limiting groove (94) is formed on the inner walls at the top and bottom of the through hole (92); the limiting block (95) is fixedly connected to the top and bottom of the fixing rod (93) and is slidably connected to the limiting groove (94).

3. A blind rivet according to claim 2, characterized in that: The fixing assembly (9) further comprises a positioning groove (96) and a positioning block (97); the positioning groove (96) is L-shaped and is provided on the inner walls on both sides of the cavity (5); the positioning block (97) is fixedly connected to both sides of the extrusion block (6) and is slidably connected to the positioning groove (96).

4. A blind rivet according to claim 1, characterized in that: The extension assembly (10) comprises a mounting groove (101), a mounting block (102), a guide groove (103) and a guide block (104); the mounting groove (101) is provided at two sides of the top of the nail cap (1); the mounting block (102) is movably connected to the mounting groove (101); the guide groove (103) is provided on inner walls at two sides of the mounting groove (101); and the guide block (104) is fixedly connected to two sides of the mounting block (102) and slidably connected to the guide groove (103).

5. A blind rivet according to claim 4, characterized in that: The extension assembly (10) further comprises a connecting groove (105), an adjusting block (106), a plug hole (107), a mounting seat (108) and an insertion rod (109); the connecting groove (105) is arranged at the bottom of the nail cap (1) and is connected to the mounting groove (101); the adjusting block (106) is fixedly connected to the bottom of the mounting block (102) and is slidably connected to the connecting groove (105); a plurality of groups of the plug holes (107) are arranged and are arranged at both sides of the connecting groove (105); the mounting seat (108) is sleeved and slidably connected to the outer periphery of the adjusting block (106); and the insertion rod (109) is fixedly connected to both sides of the top of the mounting seat (108) and is adapted to the size of the plug hole (107).

6. A blind rivet according to claim 5, characterized in that: The extension assembly (10) further comprises a slide groove (1010), a slider (1011) and a spring (1012); the slide groove (1010) is provided on a surface of one side of the adjustment block (106); the slider (1011) is fixedly connected to the inner side of the mounting seat (108) and is slidably connected to the slide groove (1010); the spring (1012) is fixedly installed inside the slide groove (1010) and has two ends fixedly connected to the bottom of the slider (1011) and the inner wall of the bottom of the slide groove (1010), respectively.

Images