CN205876912U

CN205876912U - Auto -lock rivet

Info

Publication number: CN205876912U
Application number: CN201620189235.4U
Authority: CN
Inventors: 杨云
Original assignee: Shenzhen Dehong Electromechanical Industry Co ltd
Current assignee: Dongguan Aitan Hardware Technology Co ltd
Priority date: 2016-03-11
Filing date: 2016-03-11
Publication date: 2017-01-11
Anticipated expiration: 2026-03-11

Abstract

The utility model discloses an auto -lock rivet contains casing, expanding element, mandrel, elastic component and handle, be equipped with internal diameter first, two through -holes inequality in the casing, form first step face between first, two through -holes, the expanding element equipment is on the up end of first through -hole and extend the free terminal surface of second through -hole, has still installed first elastic component at first step face between the subassembly with expanding, the mandrel includes the inconsistent cylinder of two sections diameters, handing -over department of the cylinder of diameter nonconformity is formed with second step face, has still installed the second elastic component between second step face and inflation subassembly, rotatory handle has been installed through the rotation axis to the one end of mandrel, and the other end runs through to whole expanding element. The utility model discloses a benefit lies in: under the condition that does not need the instrument, just go up the handle that sets up through rotatory auto -lock rivet easily, alright with the pulling or put down the mandrel, the toper form end that makes the mandrel struts or loosens the double -layered jaw on the expanding element.

Description

Self-lock rivet

[technical field]

This utility model belongs to technical field of fastening, particularly relates to a kind of self-lock rivet.

[background technology]

Blind rivet is a kind of securing member being permanently mounted in workpiece, and it generally comprises one end and has horn-like convex The head of a nail of the hollow of edge portion and the mandrel composition through the head of a nail.Generally, workpiece is by two parts or layer group Become, it is also possible to be the parts forms to multiple parts, when group connects these parts, through the mandrel of the head of a nail The opposite side of workpiece is installed and passes, owing to opposite side can't see the head of a nail, commonly referred to as from the side of workpiece For blind side, then pull mandrel, extrude the head of a nail part in blind side by the small lugs of mandrel head and make it be subject to Expand to extruding, form heading.

The riveting method of this kind of blind rivet has the following disadvantages: 1) mandrel head is solid and close head Place is provided with breakaway neck, pulls mandrel to make head rupture, and the head of fracture is typically left in the head of a nail after deformation In, it is also possible to drop in the product installed, there is the potential safety hazard causing voltage generation circuit short circuit.2) This kind of riveting method can not inversion, say, that after two or more parts assemble, want to be torn open again Open, then must destroy blind rivet, it could even be possible to damage assembly；3), when installing, mandrel all can be destroyed, I.e. one the necessary corresponding mandrel of the head of a nail, so, causes waste of material, cost up；4) riveting dynamics is complete The full intensity by formed heading, is significantly limited by the selected strength of materials.

Sign in disadvantages described above, be necessary in fact to provide a kind of can overcome above-mentioned technical problem of the prior art from Lock rivet.

[utility model content]

The purpose of this utility model is to provide one and designs simple, low cost of manufacture and can guarantee that locking firmly, Can also the self-lock rivet of Reusability.

To achieve these goals, this utility model provides a kind of self-lock rivet, and it comprises housing, expansion Part, mandrel, elastic component and handle, be provided with first and second through hole that internal diameter differs, institute in described housing Stating formation First terrace between first and second through hole, expansion piece is assembled on the upper surface of the first through hole and prolongs Stretch out the free end face of the second through hole, between First terrace and expansion assembly, be also installed on the first elastic component, Described mandrel includes the cylinder that two sections of diameters are inconsistent, the cylindrical junction shape that described diameter is inconsistent Become to have second step face, between second step face and expansion assembly, be also installed on the second elastic component, the described heart One end of axle is installed on rotation handle by rotary shaft, and the other end is through to whole expansion piece.

As a kind of improvement of this utility model self-lock rivet, described expansion piece include an annular matrix and From the outward extending jaw surrounding discontinuous circle of the end face of matrix.

As a kind of improvement of this utility model self-lock rivet, described rotation handle includes the handle of growth strip With the rotary body of the bulk that takes the shape of the letter U, described rotary body offers the perforation of accommodating rotary shaft.

As a kind of improvement of this utility model self-lock rivet, described rotary body includes the first contact surface and second Contact surface, wherein, the distance at the center of perforation to the first contact surface is less than its distance to the second contact surface.

As a kind of improvement of this utility model self-lock rivet, one end of described mandrel is connected to expander jaw Inner side, and the tapered shape of this end.

Compared with prior art, this utility model self-lock rivet has the advantage that: need not any work Under conditions of tool, just can easily pass through the handle arranged on rotary self-locking rivet, just can pull or put Lower spindle, makes the jaw that the cone-shaped end of mandrel struts or unclamps on expansion piece, thus by two or more portions Part locks or takes apart, all without damaging self-lock rivet during whole, additionally, first and second bullet arranged Gonosome can select the spring of different coefficient of elasticity as required, thus improves the intensity of locking.

[accompanying drawing explanation]

Fig. 1 is this utility model self-lock rivet sectional view when locking；

Fig. 2 is the three-dimensional exploded view of this utility model self-lock rivet.

[detailed description of the invention]

In order to make the purpose of this utility model, technical scheme and Advantageous Effects become apparent from understanding, below tie Close the drawings and specific embodiments, this utility model is further elaborated.It should be appreciated that Detailed description of the invention described in this specification is only used to explain this utility model, is not intended to limit This utility model.

Refer to shown in Fig. 1 to Fig. 2, this utility model provides a kind of self-lock rivet 100, and it comprises housing 10, expansion piece 20, mandrel 30, elastic component and handle 40.Described housing 10 is in cylindrical shape, in it It is provided with first and second through hole (11,12) that internal diameter differs, between described first and second through hole (11,12) Form First terrace 13.

Expansion piece 20 includes that an annular matrix 21 and outward extending the surrounding of the end face from matrix do not connect The jaw 22 of continuous circle, described jaw includes extension arm 221 and termination 222.Expansion piece 20 is assembled in first On the upper surface of through hole 11 and extend the free end face of the second through hole 12, at First terrace 13 with expand Also being installed on the first elastic component 51 between part 20, described first elastic component 51 is generally selected as spring.

Mandrel 30 includes the cylinder that two sections of diameters are inconsistent, the cylindrical junction that described diameter is inconsistent Being formed with second step face 31, the second elastic component 52 (this utility model selection is also spring) is enclosed within mandrel On the cylinder of 30, its one end is connected to second step face 31, and other end is connected to expansion piece 20.Mandrel One end be installed on handle 40 by rotary shaft 60, the other end is through to whole expansion piece 20, and mandrel 30 is passed through The one end worn to whole expansion piece 20 is connected to the inner side of expander jaw 22, and this tapered shape in end 32.

Handle 40 includes handle 41 and the rotary body 42 of the bulk that takes the shape of the letter U, the described rotary body 42 of growth strip Offer the perforation 421 of accommodating rotary shaft.Described rotary body 42 includes that the first contact surface 422 contacts with second Face 423, wherein, the distance at the center of perforation 421 to the first contact surface 422 is less than it to the second contact surface The distance of 423.

This utility model self-lock rivet is not when using, and handle 41 and the mandrel 30 of handle 40 is generally in same On one straight line, now, the first contact surface 422 of rotary body 42 contacts with the upper surface of expansion piece, then, Above-mentioned self-lock rivet 100 is assigned in the corresponding aperture that two-layer needs locking board, and by the jaw of expansion piece 20 22 stretch out two-ply, now, rotate handle 40 to handle substantially vertical with mandrel, now, and rotary body 42 The second contact surface 422 contact with the upper surface of expansion piece 20, due in the perforation 421 of rotary body 42 The heart is less than its distance to the second contact surface 423, therefore, in this process to the distance of the first contact surface 422 In, mandrel 30 will be lifted up, and one end 32 of the tapered shape of mandrel 30 will the jaw of extrusion expansion body Inner side so that it is form heading, thus two plates be fixed together.Dismounting self-lock rivet is simpler, only needs Handle to be rotated is to initial position, it can be seen that, the portion locked all without destruction during whole Part, also without compromising on self-lock rivet.

This utility model self-lock rivet, is not restricted to described in description and embodiment, the most right Additional advantage and amendment it is easily achieved for the personnel of familiar field, therefore without departing substantially from claim And in the case of the spirit and scope of general concept that limited of equivalency range, this utility model is not limited to spy Fixed details, representational equipment and shown here as with describe examples shown.

Claims

1. a self-lock rivet, it is characterised in that: comprise housing, expansion piece, mandrel, elastic component and handle Handle, is provided with first and second through hole that internal diameter differs in described housing, formed between described first and second through hole First terrace, expansion piece is assembled on the upper surface of the first through hole and extends the free end face of the second through hole, Also being installed on the first elastic component between First terrace and expansion assembly, described mandrel includes two sections of diameters not Consistent cylinder, the inconsistent cylindrical junction of described diameter is formed with second step face, second Also being installed on the second elastic component between step surface and expansion assembly, one end of described mandrel is installed by rotary shaft Having rotation handle, the other end is through to whole expansion piece.

2. self-lock rivet as claimed in claim 1, it is characterised in that: described expansion piece includes a ring-shaped Matrix and the outward extending jaw surrounding discontinuous circle of end face from matrix.

3. self-lock rivet as claimed in claim 1, it is characterised in that: described rotation handle includes strip The handle of shape and the rotary body of the bulk that takes the shape of the letter U, described rotary body offers the perforation of accommodating rotary shaft.

4. self-lock rivet as claimed in claim 3, it is characterised in that: described rotary body includes the first contact Face and the second contact surface, wherein, the distance at the center of perforation to the first contact surface is less than it to the second contact surface Distance.

5. the arbitrary self-lock rivet as described in claim 2-4, it is characterised in that: one end of described mandrel is supported It is connected to the inner side of expander jaw, and the tapered shape of this end.