CN208686771U

CN208686771U - Backing-up screw

Info

Publication number: CN208686771U
Application number: CN201721925171.0U
Authority: CN
Inventors: 凌青海; 李金印; 张琛
Original assignee: Chongqing Sokon Industry Group Co Ltd
Current assignee: Chongqing Sokon Industry Group Co Ltd
Priority date: 2017-12-31
Filing date: 2017-12-31
Publication date: 2019-04-02
Anticipated expiration: 2027-12-31

Abstract

The utility model discloses a kind of backing-up screws, it is provided with the land for sawing thorn and one end including side and is fixed on the screw rod of land bottom, the interaction of screw hole inner sidewall corresponding with backing-up screw is pierced by the saw, to increase the frictional force between backing-up screw and screw hole inner sidewall, to have the function that reliably to be fastenedly connected.

Description

Backing-up screw

Technical field

The utility model relates to automobile manufacturing field more particularly to a kind of backing-up screws.

Background technique

With the continuous development of auto manufacturing, the certainty of auto manufacturing instantly is had become to the exploitation of automotive light weight technology Trend.

In the design of the bent position signal panels of current automobile engine, the country has used integrated fixed lightweight and has set It sets, although such set-up mode meets automotive light weight technology design standard, also usually because crankshaft high-speed is operated and operated There is the phenomenon that signal panels toner screw causes engine can not operate normally in vibration influence.

Therefore, it is necessary to a kind of screws, under the premise of guaranteeing automotive light weight technology design standard, moreover it is possible to it is locking to play fastening Effect.

Summary of the invention

The purpose of this utility model is to provide a kind of Novel anti-loose screw nails, it is intended to solve space arc in the prior art Docking point fixed technical problem when column class workpiece segmented is welded.

To achieve the above object, the backing-up screw that the utility model uses, the backing-up screw includes that side is provided with saw The screw rod of land bottom is fixed in the land and one end of thorn.

Wherein, the upper surface in the land is equipped with for the groove with the conformal contraposition of driver bit,

Wherein, the side in the land is up big and down small tapered surface,

Wherein, the saw thorn includes multiple and is circumferentially evenly distributed on tapered surface outside land,

Wherein, the shaft of the screw rod is equipped with the outer tooth of screw thread,

Wherein, the junction of the screw rod and land bottom is provided with annular groove,

A kind of backing-up screw of the utility model pierces the phase of screw hole inner sidewall corresponding with backing-up screw by the saw Interaction, so that the frictional force between backing-up screw and screw hole inner sidewall is increased, to reach the work being reliably fastenedly connected With.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model backing-up screw；

Fig. 2 is the top view of the utility model backing-up screw；

Fig. 3 is the sectional view in the land of the utility model backing-up screw；

Fig. 4 is the sectional view of the saw thorn of the utility model backing-up screw；

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term " length ", " width ", " upper ", " under ", " preceding ", " Afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " bottom " " it is interior ", " " orientation or positional relationship of equal instructions is based on attached outside Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of utility model.In addition, " multiple " are meant that two or more in the description of the present invention, unless separately There is clearly specific restriction.

Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, the backing-up screw 100 includes 10 He of land that side is provided with saw thorn 11 The screw rod 20 of 10 bottom of land is fixed in one end.

In the present embodiment, the section of the saw thorn 11 is triangle, when backing-up screw 100 rotate into it is corresponding During screw hole, since the inner sidewall of saw 11 pairs of screw holes of thorn constantly supports, make the positive pressure between screw hole and tapered surface 13 Power greatly increases, and the frictional force between the tapered surface 13 and the inner sidewall of screw hole is also increase accordingly, can to reach By the effect being fastenedly connected.

A kind of backing-up screw 100 of the utility model is pierced in 11 screw holes corresponding with backing-up screw 100 by the saw The interaction of side wall, so that the frictional force between backing-up screw 100 and screw hole inner sidewall is increased, so that reaching can be close to The effect being solidly connected.

Further, the upper surface in the land 10 is equipped with for the groove 12 with the conformal contraposition of driver bit,

In the present embodiment, the groove 12 is the groove 12 of hexagram shape, relative to traditional linear type and cross For groove 12, the cutter head impetus of corresponding screwdriver is more, thus effectively prevent conventional grooves 12 be destroyed without The phenomenon that capable of being taken out with screwdriver appearance.

Further, the side in the land 10 is up big and down small tapered surface 13,

Further, the saw thorn 11 includes multiple and is circumferentially evenly distributed on tapered surface 13 outside land 10,

Further, the shaft of the screw rod 20 is equipped with the outer tooth 21 of screw thread,

In the present embodiment, the backing-up screw 100 can also be flexible in one end setting of the screw rod 20 far from land 10 Head of screw, after backing-up screw 100 screws, the bottom hole of the elasticity head of screw and screw hole mutually supports extruding, the elasticity Head of screw has occurred elastic deformation and generates the power pushed out to screw rod 20, to make the back side and the screw hole of the outer tooth 21 of screw thread Screw thread interior tooth between normal pressure increase, correspondingly, frictional force between the two is consequently increased, to reach locking fastening Effect.

In the present embodiment, the also settable latticed non-slip texture in the back side of the outer tooth 21 of the screw thread, thus into one Step increases the frictional force between the outer back side of tooth 21 of screw thread and the screw thread interior tooth of screw hole.

In the present embodiment, the inside of the backing-up screw 100 is along the also settable oiling groove of 20 axis direction of screw rod, institute It states and is additionally provided with multiple oil filler points on the inner sidewall of oiling groove, the oil filler point, which runs through oiling groove with the external world, to be connected to, the note Oilhole is located between the outer tooth 21 of two neighboring screw thread, and threadingly outer 21 hand of spiral of tooth is uniformly distributed the oil filler point, the note The opening of oil groove is set to 12 lower section of groove and is in communication with the outside, and when backing-up screw 100 can not normally take out, staff can To pass through gap lube oil injection of the oiling groove to outside screw thread between tooth 21 and the screw thread interior tooth of screw hole, to make the outer tooth of screw thread It is lubricated between 21 and the screw thread interior tooth of screw hole, so that backing-up screw 100 be facilitated to take out.

Further, the screw rod 20 and the junction of 10 bottom of land are provided with annular groove 22,

In the present embodiment, the effect of the annular groove 22 is that backing-up screw 100 expands with heat and contract with cold in order to prevent, from And cause that the component that it is fastened is caused to damage, to reduce the service life of component.

Above disclosed is only a kind of preferred embodiment of the utility model, certainly cannot be practical to limit with this Novel interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to Equivalent variations made by the utility model claims, still belongs to the scope covered by the invention.

Claims

1. a kind of backing-up screw, which is characterized in that side is provided with the land of saw thorn and land bottom is fixed in one end Screw rod；Flexible head of screw is arranged far from the one end in land in screw rod；The junction of the screw rod and land bottom is provided with annular Slot；The side in the land is up big and down small tapered surface；The saw thorn includes multiple and is uniformly distributed circumferentially outside land On tapered surface；The shaft of the screw rod is equipped with the outer tooth of screw thread, and the back side of the outer tooth of screw thread is provided with latticed non-slip texture, The inside of backing-up screw is provided with oiling groove along screw axis direction, and multiple oilings are additionally provided on the inner sidewall of the oiling groove Hole, the oil filler point, which runs through oiling groove with the external world, to be connected to, and the oil filler point is located between the outer tooth of two neighboring screw thread, the note Threadingly the outer tooth hand of spiral is uniformly distributed oilhole, and the opening of the oiling groove is set to below groove and is in communication with the outside.

2. backing-up screw as described in claim 1, which is characterized in that the upper surface in the land be equipped with for screwdriver knife The groove of conformal contraposition.

3. backing-up screw as described in claim 1, which is characterized in that the shaft of the screw rod is equipped with the outer tooth of screw thread.