Double-tail-tooth short-tail rivet

Abstract

The utility model relates to a double-tail-tooth short-tail rivet, which belongs to the technical field of rivets and comprises two connecting plates, a rivet component which penetrates through the two connecting plates and can ensure that the two connecting plates are tightly attached is arranged on the inner sides of the two connecting plates, and a lantern ring which can be sleeved on the outer surface of the rivet component is arranged above the rivet component. A mounting tool used for mounting the rivet assembly and the lantern ring is further arranged above the rivet assembly. According to the double-tail-tooth short-tail rivet, the problem that the tooth width of a four-tooth rivet is insufficient is solved, the problem that a tool and the rivet are prone to being eccentric and not concentric is solved, the reliability of rivet mounting and dismounting can be greatly improved, the service life of the tool can be greatly prolonged, meanwhile, the anvil moves forwards to extrude the lantern ring, and after a connected piece is tightly pressed by the rivet assembly and the lantern ring, the rivet assembly and the lantern ring can be fixed. The lantern ring is extruded in the locking thread groove of the rivet to form permanent deformation connection, if the pulling force is continuously applied, the lantern ring is broken at the first tooth bottom, and the installation size is shorter after the lantern ring is broken.

Description

TECHNICAL FIELD

[0001] The utility model relates to rivet technical field, concretely is a kind of double tail tooth short tail rivet. BACKGROUND

[0002] Rivet is a kind of mechanical fastener by its own deformation or interference realizes connection, mainly used to fix two or more parts with hole, rivet as the key element of mechanical connection, its own structure determines the reliability and stability of mechanical connection.

[0003] The tail tooth of current short tail rivet has four teeth and single tooth two kinds, due to the limitation of total length of tail tooth, leading to the rivet of four teeth design, the width of each tooth is smaller, the strength of single tooth is lower, rivet tail tooth is easy to damage during installation, leading to installation failure, and single tooth design solves the width problem of rivet tail tooth, but during installation, tool and rivet are easy to eccentric, tool and rivet are not on the same axis, tool jaw bears all tensile force only with one tooth, jaw bears larger tensile force, eccentricity and larger tensile force lead to the service life of installation tool jaw is lower, due to tool and rivet are easy to eccentric, it can lead to rivet disassembly, disassembly tool bit is offset and cut on rivet, leading to disassembly failure and tool damage.

[0004] The above four teeth or single tooth short tail rivet cannot consider installation life and installation reliability, so a double tail tooth short tail rivet is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a double tail tooth short tail rivet, has the advantages such as considering installation life and installation reliability, solves the problem that traditional rivet cannot consider installation life and installation reliability.

[0006] To achieve the above object, the utility model provides the following technical scheme: a double tail tooth short tail rivet, including two connecting plates, the inner side of two connecting plates is equipped with rivet assembly that can guarantee that two connecting plates are closely attached and is penetrated through two connecting plates, the upper of rivet assembly is equipped with sleeve ring that can be set on the outer surface of rivet assembly, the upper of rivet assembly is also equipped with installation tool for installing rivet assembly and sleeve ring.

[0007] Further, the rivet assembly includes head, the head is below two connecting plates, the top of head is fixed with rivet body that is penetrated through two connecting plates, the outer surface of rivet body is equipped with locking screw groove, the top of rivet body is fixed with double tail tooth body, the sleeve ring is composed of flange and circular tube.

[0008] Further, the sleeve ring is set on the outer surface of rivet assembly, and the sleeve ring is above two connecting plates.

[0009] Further, the top of the flange is fixed with the circular tube, the bottom of the flange abuts against the top of the upper connecting plate, and the top of the head abuts against the bottom of the lower connecting plate.

[0010] Further, the sleeve is sleeved on the outer surface of the rivet assembly, and the sleeve penetrates the two connecting plates.

[0011] Further, the bottom of the flange is fixed with the circular tube penetrating the two connecting plates, the bottom of the flange abuts against the top of the upper connecting plate, and the bottom of the circular tube abuts against the top of the head.

[0012] Further, the installation tool comprises a jaw matched with the double-tail tooth body, and an anvil is sleeved on the outer surface of the jaw.

[0013] Compared with the prior art, the technical scheme has the following beneficial effects:

[0014] The double-tail tooth short-tail rivet solves the problems of insufficient width of the four-tooth rivet and eccentricity of the tool and the rivet, and the new scheme can greatly improve the reliability of rivet installation and disassembly and the service life of the tool. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic diagram of the utility model;

[0016] Fig. 2 It is an installation flowchart of the embodiment 1 of the utility model;

[0017] Fig. 3 It is an installation flowchart of the embodiment 2 of the utility model;

[0018] Fig. 4 It is a comparison diagram of installation angles of the single-tail tooth and the double-tail tooth;

[0019] Fig. 5 It is a comparison diagram of installation stress of the single-tail tooth and the double-tail tooth.

[0020] In the figure: 1 connecting plate, 2 rivet assembly, 201 rivet body, 202 locking screw groove, 203 head, 204 double-tail tooth body, 3 sleeve, 301 flange, 302 circular tube, 4 installation tool, 401 jaw, 402 anvil. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Embodiment

[0022] Please refer to Figs. 1-2 The double-tail tooth short-tail rivet in the embodiment comprises two connecting plates 1, the inner sides of the two connecting plates 1 are provided with rivet assemblies 2 penetrating through the two connecting plates 1 and capable of ensuring that the two connecting plates 1 are tightly attached, the upper sides of the rivet assemblies 2 are provided with sleeve rings 3 capable of being sleeved on the outer surfaces of the rivet assemblies 2, and the upper sides of the rivet assemblies 2 are further provided with installation tools 4 for installing the rivet assemblies 2 and the sleeve rings 3.

[0023] In addition, the rivet assembly 2 comprises a head 203, the head 203 is located below the two connecting plates 1, the top of the head 203 is fixed with a rivet body 201 penetrating through the two connecting plates 1, the outer surface of the rivet body 201 is provided with a locking thread groove 202, the locking thread groove 202 can provide an embedding space for the deformation of the sleeve ring 3, thereby improving the connection stability, the top of the rivet body 201 is fixed with a double-tail tooth body 204, the sleeve ring 3 is composed of a flange 301 and a circular tube 302, the tooth height of the double-tail tooth body 204 is higher than that of a single tooth, which can improve the service life of a mold and reduce production cost in the production process, the top of the double-tail tooth body 204 is designed as a round corner plus an inclined surface, which can reduce stress concentration and improve fatigue life by more than ten times, and can better fit the angle inclined surface of the installation tool 4, thereby avoiding line contact to cause tooth deformation.

[0024] It should be further explained that the top of the flange 301 is fixed with the circular tube 302, the bottom of the flange 301 abuts against the upper connecting plate 1, the top of the head 203 abuts against the bottom of the lower connecting plate 1, and the sleeve ring 3 is extruded in the locking thread groove 202 by the installation tool 4 during use, so as to form a permanent deformation connection, thereby realizing a stable and fixed connection effect.

[0025] In addition, the installation tool 4 comprises a clamping jaw 401 matched with the double-tail tooth body 204, and an anvil 402 is sleeved on the outer surface of the clamping jaw 401.

[0026] In the embodiment, if there is a requirement for the size of the installed rivet body 201, the pulling force can be improved, the rivet is pulled off at the position of the first tail tooth of the double-tail tooth body 204 on the rivet body 201 after the deformation of the sleeve ring 3 is completed, and there is no tail tooth after installation, which is suitable for narrow spaces and does not interfere with other components. Embodiment

[0027] Please refer to Fig. 3 , the sleeve 3 is sleeved on the outer surface of the rivet assembly 2, the sleeve 3 penetrates the two connecting plates 1, the bottom of the flange 301 is fixed with the circular tube 302 penetrating the two connecting plates 1, the bottom of the flange 301 abuts against the top of the upper connecting plate 1, and the bottom of the circular tube 302 abuts against the top of the head 203.

[0028] Another scheme based on the first embodiment is provided, the flange 301 is arranged above the circular tube 302, the circular tube 302 penetrates the two connecting plates 1, and the lower part of the circular tube 302 abuts against the head 203, when the installation tool 4 is used, the claw 401 pulls the rivet body 201 to move upward, at this time, the circular tube 302 is deformed under the extrusion of the head 203, and the sleeve 3 is deformed into the locking thread groove 202 under the extrusion of the anvil 402, through the superposition of the two deformations, the fixing effect is further improved.

[0029] It can be understood that the second embodiment is a variation of the first embodiment, and provides multiple schemes for the double-tail short-tail rivet, optimizes the stability, and can take into account the installation life and installation reliability.

[0030] The locking thread groove 202 used in the application adopts a round corner design, please refer to Fig. 5 , compared with trapezoidal teeth, the stress concentration is smaller, the fatigue performance is more than 10 times that of trapezoidal teeth, the production mold life is improved by more than 3 times, the manufacturing cost is greatly reduced, and please refer to Fig. 4 and Fig. 5 , the double-tail teeth used in the application play a role in sharing the tensile force compared with single-tail teeth.

[0031] The working principle of the above embodiments is as follows:

[0032] When installed, the claw 401 on the installation tool 4 grabs the double-tail body 204 of the rivet assembly 2 and pulls it backward, and the anvil 402 moves forward to extrude the sleeve 3, the rivet assembly 2 and the sleeve 3 are pressed tightly by the connecting piece, the sleeve 3 is extruded into the locking thread groove 202 of the rivet, a permanent deformation connection is formed, if the pulling force continues to be applied, the first tooth bottom will be broken, and the installation size will be shorter after the breakage.

[0033] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0034] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application.

Claims

1. A double-tailed short-tail rivet comprising two connecting plates (1), characterized in that: The inner side of the two connecting plates (1) is provided with a rivet assembly (2) penetrating through the two connecting plates (1) and capable of ensuring the close adhesion of the two connecting plates (1), the upper side of the rivet assembly (2) is provided with a sleeve ring (3) capable of being sleeved on the outer surface of the rivet assembly (2), and the upper side of the rivet assembly (2) is further provided with a mounting tool (4) for mounting the rivet assembly (2) and the sleeve ring (3).

2. A double-tailed, short-tailed rivet according to claim 1, wherein: The rivet assembly (2) comprises a head (203) located below the two connecting plates (1), the top of the head (203) is fixed with a rivet body (201) penetrating through the two connecting plates (1), the outer surface of the rivet body (201) is provided with a locking thread groove (202), and the top of the rivet body (201) is fixed with a double-tail tooth body (204), and the sleeve ring (3) is composed of a flange (301) and a circular tube (302).

3. A double-tailed, short-tailed rivet according to claim 2, wherein: The sleeve ring (3) is sleeved on the outer surface of the rivet assembly (2), and the sleeve ring (3) is located above the two connecting plates (1).

4. A double-tailed, short-tailed rivet according to claim 3, wherein: The top of the flange (301) is fixed with the circular tube (302), the bottom of the flange (301) abuts against the upper connecting plate (1), and the top of the head (203) abuts against the bottom of the lower connecting plate (1).

5. A double-tailed, short-tailed rivet according to claim 2, wherein: The sleeve ring (3) is sleeved on the outer surface of the rivet assembly (2), and the sleeve ring (3) penetrates through the two connecting plates (1).

6. A double-tailed, short-tailed rivet according to claim 5, wherein: The bottom of the flange (301) is fixed with the circular tube (302) penetrating through the two connecting plates (1), the bottom of the flange (301) abuts against the top of the upper connecting plate (1), and the bottom of the circular tube (302) abuts against the top of the head (203).

7. A double-tailed dental rivet according to claim 4 or 6, wherein: The mounting tool (4) comprises a jaw (401) matched with the double-tail tooth body (204), and the outer surface of the jaw (401) is sleeved with an anvil (402).

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