CN212202776U

CN212202776U - Fastening piece

Info

Publication number: CN212202776U
Application number: CN202020704939.7U
Authority: CN
Inventors: 张亮辉
Original assignee: Hebei Jinan Standard Component Co ltd
Current assignee: Hebei Jinan Standard Component Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-22
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a fastener, belonging to the field of fasteners, comprising a nail, an inner sleeve detachably sleeved on the nail, and an outer sleeve detachably sleeved on the inner sleeve and used for fastening the inner sleeve; the nail comprises a nail head and a nail body, the contour lines of the outer wall of the nail body are straight lines, anti-skidding lines are arranged on the inner wall of the inner sleeve, and the inner sleeve is in interference fit with the nail body. The utility model relates to an ingenious, easy to use, locking effectual has avoided the processing of screw thread and nut in the bolt and nut production, has saved raw and other materials, has reduced the environmental pollution in the course of working, is applicable to the connecting piece of all needs fastenings.

Description

Fastening piece

Technical Field

The utility model belongs to the fastener field relates to a fastener.

Background

The bolt and the nut are convenient to connect and disassemble, and the bolt and the nut are fastening modes which are widely applied. However, the fastening mode has a plurality of defects, firstly, the fastening mode is easy to loosen in the using process, so that the fastening failure is caused; secondly, the machining process of the threads needs engine oil for lubrication, the continuous production of the machine can cause the temperature of the die to rise, the engine oil can generate oil smoke after contacting the high-temperature die, and similarly, the cutting process of the hexagon bolt can generate the oil smoke due to high temperature to pollute air; moreover, as the hexagon machining of the bolt is removal type machining, the raw materials are wasted; in addition, the threaded connection is complicated in the subsequent assembly process.

SUMMERY OF THE UTILITY MODEL

For solving exist among the prior art more than not enough, the utility model aims at providing a fastener to it is effectual to reach locking, and the installation is simple, and reduces the purpose to the pollution of environment.

In order to achieve the above object, the utility model adopts the following technical scheme: a fastener comprises a nail, an inner sleeve detachably sleeved on the nail, and an outer sleeve detachably sleeved on the inner sleeve and used for fastening the inner sleeve; the nail comprises a nail head and a nail body, the contour lines of the outer wall of the nail body are straight lines, anti-skidding lines are arranged on the inner wall of the inner sleeve, and the inner sleeve is in interference fit with the nail body.

As to the utility model limit: the inner sleeve is cut into at least two locking sheets along the length direction of the nail, and the locking rings arranged on the outer wall of the inner sleeve are spliced.

As to the utility model limit: the inner sleeve is of a circular truncated cone-shaped structure with a through hole in the axis, and the inner wall of the outer sleeve is an inclined plane matched with the outer wall of the inner sleeve.

As to the utility model limit: one end of the inner sleeve corresponding to the end part of the nail body extends out in the direction of increasing the diameter to form a limiting ring.

As a further limitation to the present invention: the locking ring is a circular ring formed by winding an annular coil.

As a further limitation to the present invention: the inclination angle of the outer wall of the circular truncated cone structure of the inner sleeve is 5-8 degrees.

As a further limitation to the present invention: the anti-slip threads are annular threads which extend out from the inner wall of the inner sleeve in a direction away from the nail head in an inclined mode.

As to the utility model discloses a further limit again: the outer wall of the inner sleeve is provided with an annular groove, and the locking ring is arranged on the outer wall of the inner sleeve through the annular groove ring.

As to the utility model discloses a further limit again: the outer wall inclination angle of the inner sleeve circular truncated cone structure is 7 degrees.

Since the technical scheme is used, compared with the prior art, the utility model, the beneficial effect who gains lies in:

(1) the utility model discloses be equipped with smooth nail, inner wall has inner skleeve and outer sleeve of anti-skidding line, will treat that adapting unit connects through the nail, the outer sleeve that cup joints outside the inner skleeve holds the inner skleeve tightly on the nail, through the cooperation of inner skleeve lower extreme face and pin fin, will treat that adapting unit fastens, the processing of screw thread and nut in bolt production has been avoided to this kind of fastening mode, both avoided the waste to raw and other materials in the formula processing of getting rid of, pollution to the environment in the screw thread processing has been avoided, and fasten the inner skleeve through the outer sleeve, the phenomenon that can become flexible after a period of time of connecting in the bolt nut has been avoided, can be anti-loose effectively, in addition through cup jointing the back on the nail by the inner skleeve that will be formed by the locking plate, use;

(2) the inner sleeve and the nail body are in interference fit, the inner sleeve is cut into at least two halves along the length direction of the nail, and the inner sleeve and the nails with different diameters can be matched in a certain range through the splicing of the locking rings, so that the applicability is strong, and the action of sleeving the inner sleeve on the nail is more convenient and labor-saving; the locking ring of the utility model is a circular ring formed by winding the annular coil, and the diameter of the circular ring can be adjusted according to the different nail diameters, so that the inner sleeve can be matched with nails with different diameters, and the inner sleeve sleeved on the nail can be ensured to compress the nail; the utility model has the advantages that the annular groove is arranged on the outer wall of the inner sleeve, the locking ring tightly encircles the inner sleeve in the annular groove, and the axial displacement of the locking ring can be effectively prevented;

(3) the inner sleeve of the utility model is in a round table structure, the inner wall of the outer sleeve is an inclined plane matched with the outer wall of the inner sleeve, so that the outer sleeve is more easily sleeved on the inner sleeve, the inclination angle of the outer wall of the round table structure of the inner sleeve is 5-8 degrees, and multiple tests prove that the outer sleeve can be more easily sleeved on the inner sleeve within the angle range, and the outer sleeve can effectively fasten the inner sleeve;

(4) the utility model discloses the one end that inner skleeve and nail body tip correspond stretches out to the direction that the diameter grow, forms the spacing ring, and when the outer sleeve cup joints on the inner skleeve, form the effective fastening to the nail body after, this spacing ring can carry on spacing to the outer sleeve, has played locking effect to the fastening of outer sleeve effectively;

(5) the utility model provides a nail is the mushroom head nail, and the pin fin terminal surface is the cambered surface, can make pressure apply effectively at the center of nail when exerting pressure to nail and outer sleeve in the installation, has guaranteed the installation effect.

To sum up, the utility model relates to an ingenious, easy to use, locking effectual has avoided the processing of screw thread and nut in the bolt and nut production, has saved raw and other materials, has reduced the environmental pollution in the course of working, is applicable to all connecting pieces that need the fastening.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a half-section structure of an assembled state of an embodiment of the present invention;

FIG. 2 is a schematic front view of the inner sleeve 2 according to the embodiment of the present invention;

fig. 3 is a schematic top view of the embodiment of the present invention fig. 2.

In the figure: 1-nail, 11-nail head, 12-nail body, 2-inner sleeve, 3-outer sleeve, 4-locking ring, 5-annular groove, 6-limiting ring, 7-to-be-connected part and 8-locking piece.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the fasteners described herein are preferred embodiments, are provided for illustration and explanation of the present invention only, and do not constitute limitations of the present invention.

The terms such as "upper", "lower", "left", "right" and the like or the positional relationship of the present invention are based on the positional relationship of fig. 1 and fig. 2 of the drawings of the present invention, and are only for convenience of description of the present invention and for simplification of description, and are not intended to indicate or imply that a device or an element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the protection of the present invention.

Example fastener

The present embodiment is shown in fig. 1-3, and is a fastener, which includes a nail 1, an inner sleeve 2 detachably sleeved on the nail 1, and an outer sleeve 3 detachably sleeved on the inner sleeve 2 and used for fastening the inner sleeve 2.

Nail 1 is the mushroom head nail, including pin fin 11 and nail body 12, and nail body 12 is for not establishing the threaded cylinder structure, and the contour line of its outer wall is the straight line.

The inner sleeve 2 is a round table-shaped structure with a vertical through hole at the axis, the inclination angle of the outer wall of the inner sleeve is 7 degrees, and the inner diameter of the central through hole is smaller than the diameter of the nail body 12, namely, the inner sleeve 2 and the nail body 12 are in interference fit. In the present embodiment, the material of the inner socket 2 is a gear steel (20 CrMnTi) having high plasticity. The inner wall of the inner sleeve 2 is provided with anti-skid grains which are annular grains extending upwards from the inner wall of the inner sleeve 2 in an inclined way. The inner sleeve 2 is cut into three locking tabs 8 in the vertical direction, and the three locking tabs 8 are spliced by the locking ring 4 arranged on the outer wall of the inner sleeve 2. The locking ring 4 is a ring formed by winding a tension annular metal coil, and the number of winding turns of the locking ring 4 is one and a half in the embodiment. The lower half part of the outer wall of the inner sleeve 2 is provided with an annular groove 5, and the locking ring 4 is encircled on the outer wall of the inner sleeve 2 through the annular groove 5. The upper end of the inner sleeve 2 extends in the direction of increasing diameter to form a limit ring 6.

The outer sleeve 3 is a cylindrical structure with a through hole at the axis, the inner wall of the outer sleeve 3 has an inclination angle of 7 degrees, and the size of the inner wall of the outer sleeve is matched with the inclined plane of the outer wall of the inner sleeve 2.

When the fastening device is used, the to-be-connected component 7 is sequentially penetrated through the nail 1, the inner sleeve 2 is sleeved on the nail 1, the inner sleeve 2 is matched with the nail head 11 to compress the to-be-connected component 7, the outer sleeve 3 is sleeved on the inner sleeve 2, and finally the outer sleeve 3 is sleeved on the limiting ring 6 by using the reverse hydraulic pliers and extends out of the upper end of the outer sleeve 3 to finish fastening.

Claims

1. A fastener, characterized by: the nail-free fastening device comprises a nail, an inner sleeve detachably sleeved on the nail, and an outer sleeve detachably sleeved on the inner sleeve and used for fastening the inner sleeve; the nail comprises a nail head and a nail body, the contour lines of the outer wall of the nail body are straight lines, anti-skidding lines are arranged on the inner wall of the inner sleeve, and the inner sleeve is in interference fit with the nail body.

2. The fastener of claim 1, wherein: the inner sleeve cuts into two at least locking pieces along the length direction of the nail, and the locking pieces are spliced through locking rings arranged on the outer wall of the inner sleeve.

3. The fastener of claim 2, wherein: the locking ring is a circular ring formed by winding an annular coil.

4. The fastener of claim 3, wherein: the outer wall of the inner sleeve is provided with an annular groove, and the locking ring is arranged on the outer wall of the inner sleeve through the annular groove ring.

5. The fastener of any one of claims 1 to 4, wherein: the inner sleeve is of a circular truncated cone-shaped structure with a through hole in the axis, and the inner wall of the outer sleeve is an inclined plane matched with the outer wall of the inner sleeve.

6. The fastener of claim 5, wherein: the inclination angle of the outer wall of the circular truncated cone structure of the inner sleeve is 5-8 degrees.

7. The fastener of claim 6, wherein: the outer wall inclination angle of the inner sleeve circular truncated cone structure is 7 degrees.

8. The fastener of any one of claims 1-4, 6 and 7, wherein: one end of the inner sleeve corresponding to the end part of the nail body extends out in the direction of increasing the diameter to form a limiting ring.

9. The fastener of claim 8, wherein: the anti-slip threads are annular threads which extend out from the inner wall of the inner sleeve in a direction away from the nail head in an inclined mode.

10. The fastener of claim 5, wherein: one end of the inner sleeve, which is far away from the nail head, extends out in the direction of increasing the diameter to form a limiting ring.