CN217271281U

CN217271281U - Anti-falling rivet

Info

Publication number: CN217271281U
Application number: CN202221252658.8U
Authority: CN
Inventors: 温鸿辉; 李超新; 罗英海; 陈达波
Original assignee: Dongguan Jingzhong Plastic Co ltd
Current assignee: Dongguan Jingzhong Plastic Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-08-23
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to an anti-drop rivet. Anti-drop rivet include: the nail sleeve is provided with a first jack, the lower end face of the nail sleeve is provided with a lower column part, the lower column part is provided with a third jack which is coaxial and communicated with the first jack, the peripheral wall of the lower end of the lower column part is provided with a lower notch communicated with the third jack, and the peripheral wall of the third jack is provided with a groove; the nail core comprises a nail cap and a nail column arranged on the nail cap, the nail column is inserted into the first insertion hole and the third insertion hole, the nail column abuts against the inner wall face of the lower column portion to prop open the lower end of the lower column portion, a mounting groove is formed in the peripheral wall face of the nail column, a protruding block matched with the groove is installed in the mounting groove in a sliding mode, and an elastic piece used for driving the protruding block to be inserted into the groove is arranged in the mounting groove.

Description

Anti-falling rivet

Technical Field

The utility model relates to a connecting piece technical field especially relates to an anti-drop rivet.

Background

The rivet is a nail-shaped object used for connecting two parts (or components) with through holes and caps at one ends, and in the riveting process, the riveted parts are connected by self deformation or interference, so that the rivet is various in types and in any form.

The prior art rivets are easy to fall off during fastening, and designers have made many improvements on the rivets in order to prevent the rivets from falling off. But still fails to address the problem of rivet dropping.

For this reason, it is necessary to develop a new rivet structure to solve such problems.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing an anti-drop rivet, this anti-drop rivet can prevent the rivet from droing effectively.

A drop resistant rivet, comprising: the nail sleeve is provided with a first jack, the lower end face of the nail sleeve is provided with a lower column part, the lower column part is provided with a third jack which is coaxial and communicated with the first jack, the peripheral wall of the lower end of the lower column part is provided with a lower notch communicated with the third jack, and the peripheral wall of the third jack is provided with a groove; the nail core, the nail core includes the nail cap and sets up nail post on the nail cap, the nail post is inserted and is established first jack in the third jack, the nail post offset in the internal face of lower column part is in order to strut the lower extreme of lower column part the perisporium face of nail post is provided with the mounting groove the sliding installation in the mounting groove with recess matched with lug be provided with in the mounting groove and be used for the drive the lug inserts the elastic component in the recess.

Furthermore, the elastic part is located between the convex block and the end face of the mounting groove, one end of the elastic part is connected with the convex block, and the other end of the elastic part is connected with the end face of the mounting groove.

Further, the end part, far away from the nail core, of the lug is provided with a guide inclined plane.

Furthermore, a guide groove is arranged in the nail sleeve, the guide groove vertically extends downwards from the upper end of the inner wall of the first insertion hole to the inner wall of the third insertion hole, a guide piece is arranged on the peripheral wall surface of the nail column, and the guide piece moves up and down in the guide groove.

Further, the groove is located above the lower notch, and the lower end of the guide groove is located above the lower notch.

Furthermore, an upper column part is arranged on the upper end face of the nail sleeve, the upper column part is provided with a second insertion hole which is coaxial and communicated with the first insertion hole, and an upper notch communicated with the second insertion hole is arranged on the peripheral side of the upper column part; the lower end of the inner peripheral wall surface of the nail cap is provided with a clamping piece, the middle position of the inner top wall surface of the nail cap is provided with a circular table portion, the circular table portion and the inner wall surface of the nail cap are arranged to form an accommodating space capable of accommodating the upper column portion, the circular table portion is inserted into the second insertion hole, the circular table portion abuts against the inner wall surface of the upper column portion to prop open the upper end of the upper column portion, and the propped-open part of the upper column portion is fixedly connected with the clamping piece in a fastening mode.

Further, the diameter of the end, close to the nail head, of the circular table part is larger than the diameter of the end, far away from the nail head, of the circular table part.

Further, the nail post is arranged in the middle of the lower end face of the circular boss portion, and the diameter of the nail post is smaller than that of the end portion, far away from the nail head, of the circular boss portion.

Further, the upper notch extends from an upper end surface of the upper pillar portion to a lower end of the upper pillar portion.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a drop-proof rivet according to an embodiment;

FIG. 2 is a sectional view of the drop-preventing rivet according to the embodiment;

reference numerals:

11. nailing a sleeve; 111. a first jack; 112. a groove; 113. a guide groove; 12. an upper column portion; 121. a second jack; 122. an upper notch; 13. a lower column portion; 131. a third jack; 132. a lower notch; 21. a nail cap; 211. a fastener; 212. a circular table portion; 213. an accommodating space; 22. nailing columns; 221. mounting grooves; 222. a bump; 223. an elastic member; 224. a guide member.

Detailed Description

An anti-drop rivet, see figure 1, comprises a rivet sleeve 11 and a rivet core. Wherein the core is inserted in the tack sleeve 11.

Referring to fig. 1 and 2, the pin sleeve 11 is provided with a first insertion hole 111, and the first insertion hole 111 extends from the upper end of the pin sleeve 11 to the lower end of the pin sleeve 11. An upper column part 12 and a lower column part 13 are respectively arranged at the upper end and the lower end of the nail sleeve 11. The upper column part 12 is provided with a second insertion hole 121, the second insertion hole 121 extends from the upper end of the upper column part 12 to the lower end of the upper column part 12, the lower end of the second insertion hole 121 is communicated with the upper end of the first insertion hole 111, the axis of the second insertion hole 121 and the axis of the first insertion hole 111 are located on the same straight line, and the aperture of the second insertion hole 121 is larger than that of the first insertion hole 111. An upper notch 122 communicating with the second insertion hole 121 is provided on the circumferential side of the upper pillar portion 12, and the upper notch 122 extends from the upper end surface of the upper pillar portion 12 toward the lower end of the upper pillar portion 12. The lower column part 13 is provided with a third insertion hole 131, the third insertion hole 131 extends from the upper end of the lower column part 13 to the lower end of the lower column part 13, the upper end of the third insertion hole 131 is communicated with the upper end of the first insertion hole 111, the axis of the third insertion hole 131 and the axis of the first insertion hole 111 are positioned on the same straight line, and the hole diameter of the third insertion hole 131 is equal to that of the first insertion hole 111. Lower notch 132 communicating with third insertion hole 131 is provided on the peripheral side of lower column portion 13, and lower notch 132 extends from a predetermined position of lower column portion 13 to the lower end surface of lower column portion 13.

Referring to fig. 1 and 2, the mandrel includes a nut 21 and a post 22 disposed at a middle position of the nut 21. A snap 211 is provided at a lower end of the inner peripheral wall surface of the nail cap 21. A boss portion 212 is provided at a central portion of an inner top wall surface of the nut 21, and the boss portion 212 and an inner wall surface of the nut 21 form an accommodation space 213 in which the upper column portion 12 can be accommodated. The diameter of the end of the circular truncated cone 212 close to the nut 21 is larger than the diameter of the end of the circular truncated cone 212 far from the nut 21, i.e., the upper end diameter of the circular truncated cone 212 is larger than the lower end diameter of the circular truncated cone 212. The axis of the circular table portion 212 is on the same line as the axis of the second insertion hole 121, the circular table portion 212 is inserted into the second insertion hole 121, the circular table portion 212 abuts against the inner wall surface of the upper column portion 12 to expand the upper end of the upper column portion 12, and the expanded portion of the upper column portion 12 is fastened and fixed to the fastener 211. The post 22 is arranged at the middle position of the lower end face of the circular table part 212, and the diameter of the post 22 is smaller than that of the end part of the circular table part 212 far away from the nut 21. The axis of the nail post 22 and the axis of the first insertion hole 111 are positioned on the same straight line, the nail post 22 is inserted into the second insertion hole 121, the first insertion hole 111 and the third insertion hole 131 in sequence, the nail post 22 abuts against the inner wall surface of the lower column part 13 to prop open the lower end of the lower column part 13, and the lower end surface of the nail cap 21 and the propped-open part of the lower column part 13 clamp the workpiece together.

Referring to fig. 1 and 2, the nail sleeve 11 and the nail core are also connected through an elastic buckling structure. Specifically, the elastic snap structure includes a groove 112, a bump 222, and an elastic member 223. Wherein the groove 112 is provided on the inner circumferential wall of the third insertion hole 131. An installation groove 221 is provided on the outer peripheral wall surface of the stud 22. The projection 222 is slidably disposed in the mounting groove 221, and the projection 222 slides along the radial direction of the stud 22. The elastic member 223 is disposed in the mounting groove 221, the elastic member 223 is located between the protrusion 222 and the end surface of the mounting groove 221, one end of the elastic member 223 is connected with the protrusion 222, the other end of the elastic member 223 is connected with the end surface of the mounting groove 221, and the elastic member 223 is used for driving the protrusion 222 to be inserted into the groove 112. In the process of assembling the nail sleeve 11 and the nail core, the inner wall of the first insertion hole 111 or the third insertion hole 131 abuts against the projection 222 to drive the projection 222 to slide into the installation groove 221, after the projection 222 moves to the position of the groove 112 along with the movement of the nail core, the elastic piece 223 drives the projection 222 to slide outwards, and the projection 222 is in snap fit with the groove 112.

Further, in order to facilitate the pushing of the projection 222 to slide into the mounting groove 221, the end of the projection 222 away from the mandrel is provided with a guide slope.

Further, in order to ensure that the protrusion 222 can move to the position of the groove 112, the elastic snap structure further includes a guide groove 113 and a guide 224. Wherein, the guide groove 113 is arranged on the nail sleeve 11, the guide groove 113 vertically extends downwards from the upper end of the inner wall of the first insertion hole 111, the lower end of the guide groove 113 extends to the inner wall of the third insertion hole 131, and the guiding direction of the guide groove 113 is parallel to the axis of the first insertion hole 111. A guide 224 is provided on the stem, the guide 224 is provided on the outer peripheral wall surface of the post 22, and the guide 224 moves up and down in the guide groove 113.

The working process is as follows: a through hole is formed in a workpiece to be fixed; firstly, placing a nail sleeve 11 into a through hole of a workpiece, wherein the lower end surface of the nail sleeve 11 is abutted against a first side surface of the workpiece; then the stud 22 is inserted into the second insertion hole 121, the stud 22 sequentially passes through the second insertion hole 121 and the first insertion hole 111 and then is inserted into the third insertion hole 131, so that the stud 22 props up the lower end of the lower column part 13, and the propped-up part of the lower column part 13 props against the second side surface of the workpiece; meanwhile, the circular table part 212 is also inserted into the second insertion hole 121, so that the circular table part 212 expands the upper end of the upper column part 12, the expanded part of the upper column part 12 is buckled with the buckling part 211 of the nut 21, the nut 21 abuts against the first side surface of the workpiece, and the lower end surface of the nut 21 and the expanded part of the lower column part 13 clamp the workpiece together; in the process that the stud 22 enters the first insertion hole 111 and the third insertion hole 131, the guide piece 224 moves vertically and downwards along the guide groove 113, the inner wall of the first insertion hole 111 or the third insertion hole 131 abuts against the projection 222, the projection 222 is pressed into the installation groove 221, and after the projection 222 moves to the position of the groove 112, the projection 222 is matched with the groove 112 under the action of the elastic piece 223.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A drop-proof rivet, characterized in that it comprises:

the nail sleeve (11), the nail sleeve (11) is provided with a first insertion hole (111), the lower end face of the nail sleeve (11) is provided with a lower column part (13), the lower column part (13) is provided with a third insertion hole (131) which is coaxial and communicated with the first insertion hole (111), the peripheral wall of the lower end of the lower column part (13) is provided with a lower notch (132) communicated with the third insertion hole (131), and the peripheral wall of the third insertion hole (131) is provided with a groove (112);

the nail core, the nail core includes nail cap (21) and sets up nail post (22) on the nail cap (21), nail post (22) are inserted and are established in first jack (111) in third jack (131), nail post (22) offset in the internal wall face of lower post portion (13) is in order to strut the lower extreme of lower post portion (13) the perisporium face of nail post (22) is provided with mounting groove (221) the sliding installation in mounting groove (221) with recess (112) matched with lug (222) be provided with in mounting groove (221) and be used for the drive lug (222) insert elastic component (223) in recess (112).

2. A drop-proof rivet according to claim 1, wherein: the elastic piece (223) is located between the protruding block (222) and the end face of the installation groove (221), one end of the elastic piece (223) is connected with the protruding block (222), and the other end of the elastic piece (223) is connected with the end face of the installation groove (221).

3. A drop-preventing rivet according to claim 1, wherein: the end part of the lug (222) far away from the nail core is provided with a guide inclined plane.

4. A drop-preventing rivet according to claim 1, wherein: a guide groove (113) is arranged in the nail sleeve (11), the guide groove (113) vertically extends downwards from the upper end of the inner wall of the first insertion hole (111) to the inner wall of the third insertion hole (131), a guide piece (224) is arranged on the peripheral wall surface of the nail column (22), and the guide piece (224) moves up and down in the guide groove (113).

5. The drop-proof rivet according to claim 4, wherein: the groove (112) is positioned above the lower notch (132), and the lower end of the guide groove (113) is positioned above the lower notch (132).

6. A drop-preventing rivet according to claim 1, wherein:

an upper column part (12) is arranged on the upper end face of the nail sleeve (11), the upper column part (12) is provided with a second insertion hole (121) which is coaxial and communicated with the first insertion hole (111), and an upper notch (122) communicated with the second insertion hole (121) is arranged on the periphery side of the upper column part (12);

the nail head comprises a nail head (21), and is characterized in that a clamping piece (211) is arranged at the lower end of the inner peripheral wall surface of the nail head (21), a circular table portion (212) is arranged in the middle of the inner top wall surface of the nail head (21), an accommodating space (213) capable of accommodating the upper column portion (12) is formed between the circular table portion (212) and the inner wall surface of the nail head (21), the circular table portion (212) is inserted into the second insertion hole (121), the circular table portion (212) abuts against the inner wall surface of the upper column portion (12) to brace the upper end of the upper column portion (12), and the braced portion of the upper column portion (12) is fixedly fastened with the clamping piece (211).

7. A drop-preventing rivet according to claim 6, wherein: the diameter of the end, close to the nail cap (21), of the circular table part (212) is larger than that of the end, far away from the nail cap (21), of the circular table part (212).

8. A drop-proof rivet according to claim 7, wherein: the nail post (22) is arranged in the middle of the lower end face of the circular table portion (212), and the diameter of the nail post (22) is smaller than that of the end portion, far away from the nail cap (21), of the circular table portion (212).

9. The drop-proof rivet according to claim 6, wherein: the upper notch (122) extends from an upper end surface of the upper pillar portion (12) to a lower end of the upper pillar portion (12).