CN215521558U - Anti-drop knurled screw - Google Patents

Abstract

The utility model discloses an anti-drop knurled screw which comprises a knurled shell and a screw, wherein the knurled shell is made of plastic, the screw comprises a pad, the pad is provided with anti-skid convex patterns, and the knurled shell and the pad are connected in an injection molding embedding mode and are wrapped by the anti-skid convex patterns. The knurling shell buckle is connected with the connection lantern ring, but the connection lantern ring is relative knurling shell axial slip, but connection lantern ring tip is equipped with connecting portion, connecting portion be used for with the connection lantern ring is fixed on the work piece. The inner wall of the connecting lantern ring comprises a stepped hole, and the stepped hole comprises a screw guide hole and a weight reduction hole. The screw has a driving groove. The utility model can ensure that the injection molding embedding connection of the screw and the knurled shell is firmer, the antiskid convex patterns prevent the screw and the knurled shell from skidding through the friction principle, the knurled shell can not drive the screw to rotate when the screw is screwed by hand for a plurality of times of disassembly and assembly, the service life of the knurled screw is prolonged, and resources are saved.

Description

Anti-drop knurled screw

Technical Field

The application relates to the technical field of fasteners, in particular to an anti-falling knurled screw.

Background

Note that the contents described in this section do not represent all the related art.

The screw that the operation and design are twisted to the special use of knurling screw for making things convenient for the hand, the knurling line of head plays the effect of increase friction power, and is more efficient when making the hand twist dismantle.

The annular knurl shell of annular knurl screw head portion is plastics at present, inlays technology through moulding plastics and becomes an organic whole with annular knurl shell and screw, dismantles the back repeatedly, and the annular knurl shell is connected between screw and appears becoming flexible skidding easily, and the annular knurl shell can't drive the screw rotatory, causes the screw to scrap, the wasting of resources.

Disclosure of Invention

The utility model provides an anti-drop knurled screw, which mainly aims to improve the connection strength between a knurled shell and the screw and prolong the service life of the knurled screw.

In order to achieve the above object, the present invention provides an anti-drop knurled screw, comprising: knurling shell and screw, knurling shell material is the plastic, the screw includes the rim plate, the rim plate has anti-skidding burr, the knurling shell with the rim plate is moulded plastics and is inlayed the connection, will anti-skidding burr parcel.

Further, the knurled shell is connected with a connecting sleeve ring in a buckling mode, the connecting sleeve ring can axially slide relative to the knurled shell, a connecting portion is arranged at the end portion of the connecting sleeve ring, and the connecting portion is used for fixing the connecting sleeve ring on a workpiece.

Further, the inner wall of the connecting sleeve ring comprises a stepped hole, and the stepped hole comprises a screw guide hole and a weight reducing hole.

Further, the screw has a driving groove.

Further, the screw and the connecting sleeve are made of metal.

Compared with the prior art, the anti-drop knurled screw provided by the utility model has the advantages that the anti-slip convex patterns can be designed on the pad disc of the screw, the plastic of the knurled shell permeates into the concave-convex patterns wrapping the anti-slip convex patterns during injection molding, the screw and the knurled shell can be more firmly connected in an injection molding embedding manner, the anti-slip convex patterns prevent the screw and the knurled shell from slipping through a friction principle, the condition that the knurled shell cannot drive the screw to rotate when the hand-screwed screw is repeatedly disassembled and assembled is avoided, the service life of the knurled screw is prolonged, and resources are saved.

Drawings

Fig. 1 is a schematic view of an anti-drop knurled screw structure according to the present application.

Fig. 2 is a half-section schematic view of an anti-drop knurled screw of the present application.

Fig. 3 is a schematic view of an anti-drop knurled screw structure according to the present application.

Fig. 4 is a screw structure schematic diagram of an anti-drop knurled screw according to the present application.

Fig. 5 is a schematic view of a connecting sleeve structure of an anti-drop knurled screw according to the present application.

Reference numerals shown in the drawings: 1. knurling the outer shell; 2. a screw; 210. a pad disc; 211. anti-skid wales; 220. screwing the groove; 3. a connecting lantern ring; 310. a connecting portion; 320. a stepped hole; 321. a screw guide hole; 322. lightening holes; 4. and (5) a workpiece.

Detailed Description

The present invention will be described in detail below with reference to the attached drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, the present embodiment provides an anti-drop knurled screw, including a knurled housing 1 and a screw 2, wherein the knurled housing 1 is made of plastic, the screw 2 includes a pad 210, the pad 210 has an anti-slip ridge 211, the knurled housing 1 and the pad 210 are connected by injection molding and embedding, and the anti-slip ridge 211 is wrapped. The anti-skid convex patterns 211 are designed on the pad plates 210 of the screws 2, and plastic of the knurled shell 1 permeates into concave-convex patterns wrapping the anti-skid convex patterns 211 during injection molding, so that the injection molding, embedding and connection of the screws 2 and the knurled shell 1 are firmer; antiskid convex line 211 prevents to skid between screw 2 and the annular knurl shell 1 through the friction principle, and annular knurl shell 1 can't drive screw 2 rotatory when avoiding hand screw 2 to carry out a lot of dismouting, prolongs the life of annular knurl screw, resources are saved.

Referring to fig. 1-5, the knurled casing 1 is snap-connected to the connecting collar 3, the knurled casing 1 is axially slidable with respect to the connecting collar 3, the connecting portion 310 is disposed at an end of the connecting collar 3, and the connecting portion 310 is used to fix the connecting collar 3 to the workpiece 4. The knurled shell 1 can be conveniently screwed by a user through manual operation, and the screw 2 is fastened with a connected product. The connecting lantern ring 3 is fixed on the workpiece 4 through the connecting part 310, the connecting part 310 and the workpiece 4 are connected into a whole in a pressing rivet, expansion joint, glue joint, thread connection or other equivalent fixed connection modes, but in practical application, the connection is not limited to the above, and the connection can be implemented by welding, snap fitting, heat welding or other equivalent modes of combining the connecting part 310 of the connecting lantern ring 3 and the workpiece 4, so that the connecting lantern ring 3 is not easy to rotate or loosen, a stable location is formed, and the stability of the structure is ensured;

the knurled shell 1 and the connecting lantern ring 3 are sleeved into a whole after being buckled and pressed through the inverted buckle structure, the inverted buckle is used as a limit, the knurled shell 1 can axially slide along the connecting lantern ring 3 within the wall height range of the connecting lantern ring 3, the buckle connection can be assembled without tools, and the knurled shell and the connecting lantern ring can be buckled conveniently and quickly as long as the buckling positions on two sides needing to be combined are matched with each other; preferably, the inverted hook of the inverted buckle connection of the knurled shell 1 and the connection sleeve ring 3 is designed without a lead-out angle, so as to form a permanent buckle position. This kind of design can prevent effectively that 1 of annular knurl shell and the back-off of the connection lantern ring 3 from withholding and cup jointing an organic whole, and 1 of annular knurl shell is connected lantern ring 3 axial displacement to extreme position back relatively, and 1 of annular knurl shell and the connection lantern ring 3 break away from each other because the locking degree leads to inadequately. The plastic material is selected for use to the material of annular knurl shell 1, and the plastic material has certain strong malleability, and its elastic performance is better, and when annular knurl shell 1 was pressed the time with the back-off of being connected the lantern ring 3, plastic takes place elastic deformation and dodges, can prevent back-off overhead kick structure because the rupture of fit-up gap undersize, back-off restorable normal position after the assembly finishes.

When the anti-drop knurled screw is used, the knurled shell 1 is screwed, the knurled shell 1 drives the screw 2 to rotate, and when the screw 2 is screwed out of a corresponding threaded connecting hole, the connecting sleeve ring 3 and the workpiece 4 have a connecting and fixing relationship, and the connecting sleeve ring 3 and the knurled shell 1 have buckle limitation, so that the screw 2 can still be kept on the workpiece 4 without separation; the design can lead the product using the anti-drop knurled screw to avoid storing the screw after removing the screw when the product needs to be repeatedly disassembled and assembled, and lead the screw to be found at the screw storing position when the product needs to be assembled, and lead the screw to be regarded as the connecting threaded hole and then screwed down; traditional screw and product disconnect-type connected form have unnecessary a great deal of assembly steps, have torn open the screw at every turn, have and lose the risk, need notice and deposit, when product screw specification is more moreover, the screw mixes together and is difficult to classify, influences dismouting efficiency. This anticreep annular knurl screw is effective to solve this kind of pain point, makes the product dismouting more convenient, and screw 2 can stay on product work piece 4 throughout and not separate, especially when dismantling and repairing the equipment in aerospace field, prevents that the screw of pulling down from because weightlessness is irregularly floated and takes place the accident.

Preferably, the knurled housing 1 and the connecting collar 3 are connected in a dead-lock structure. This kind of design can prevent effectively that 1 of annular knurl shell and the back-off of the connection lantern ring 3 from withholding and cup jointing an organic whole, and 1 of annular knurl shell is connected lantern ring 3 axial displacement to extreme position back relatively, and 1 of annular knurl shell and the connection lantern ring 3 break away from each other because the locking degree leads to inadequately. The plastic material is selected for use to the material of annular knurl shell 1, and the plastic material has certain strong malleability, and its elastic performance is better, and when annular knurl shell 1 was pressed the time with the back-off of being connected the lantern ring 3, plastic takes place elastic deformation and dodges, can prevent back-off overhead kick structure because the rupture of fit-up gap undersize, back-off restorable normal position after the assembly finishes.

Referring to fig. 2 and 5, the inner wall of the connection collar 3 includes a stepped hole 320, and the stepped hole 320 includes a screw guide hole 321 and a weight reduction hole 322. The screw guide hole 321 and the screw 2 have a small gap, the screw guide hole 321 can enable the screw 2 to pass through the connecting sleeve ring 3 and be screwed, the threaded rod part of the guide screw 2 is not deflected, the screw can quickly enter the corresponding threaded connecting hole to be assembled, the lightening holes 322 are formed by reducing and reaming the inner hole of the connecting sleeve ring 3 on the premise of not influencing the rigidity strength of the connecting sleeve ring 3, the whole weight of the screw 2 is lightened due to the design of the lightening holes 322, and particularly, the anti-drop knurled screw has extremely high advantages when being applied to equipment in the aerospace field which has a high probability of heavy weight.

Referring to fig. 1 and 4, the screw 2 has a driving groove 220. By designing the screwing groove 220 on the screw 2, a user can conveniently screw the knurled shell 1 by hand to fasten the screw 2 to the manual screwing limit, and then continue to use the screwdriver to be matched with the screwing groove 220 to increase the force arm to further screw and fasten the screw 2, or use the electric screwdriver to be matched with the screwing groove 220 to fasten the screw 2 with time and labor saving; in practical application, the screwing groove 220 may be a cross groove, a straight groove, or an inner hexagonal groove, as required, but not limited thereto, and the structure of the screwing groove 220 may be designed in other equivalent structures.

Preferably, the material of the screw 2 and the connecting collar 3 is metal. The materials of the screw 2 and the connecting lantern ring 3 are metal commonly used by hardware tools, the strength performance is good, and the materials are easy to obtain, process and manufacture.

The technical utility model is not limited to the above embodiment, when the anti-drop knurled screw is processed and manufactured, the knurled shell 1 is connected with the connecting sleeve ring 3 through a buckle, the structure can be designed in such a way that the knurled shell 1 is sleeved with the connecting sleeve ring 3, and the connecting sleeve ring 3 is arranged in the knurled shell 1; it is also possible to design the structure such that the connection collar 3 is looped around the knurled housing 1, the knurled housing 1 being inside the connection collar 3. In some embodiments, the screw 2 does not include the pad 210, the anti-slip ribs 211 are designed on the nut of the screw 2, and the knurled housing 1 is connected with the nut of the screw 2 by injection molding.

The present invention is not limited to the above embodiments, and any embodiments mentioned in the description fall within the scope of the present invention.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.

Claims (5)

1. The utility model provides an anticreep annular knurl screw, a serial communication port, including annular knurl shell and screw, annular knurl shell material is the plastic, the screw includes the rim plate, the rim plate has anti-skidding burr, the annular knurl shell with the rim plate is for moulding plastics to inlay the connection, will anti-skidding burr parcel.

2. The anti-drop knurled screw according to claim 1, wherein the knurled housing is snap-fitted with a connection collar axially slidable with respect to the knurled housing, and a connection portion is provided at an end of the connection collar for fixing the connection collar to a workpiece.

3. The anti-drop knurled screw according to claim 2, wherein the inner wall of the connecting collar comprises a stepped hole, and the stepped hole comprises a screw guide hole and a weight-reducing hole.

4. The anti-drop knurled screw according to claim 1, wherein the screw has a driving groove.

5. The anti-drop knurled screw according to claim 1, wherein the screw and the connecting collar are made of metal.

Images