CN2766087Y

CN2766087Y - Easily screwed in and out wood screw

Info

Publication number: CN2766087Y
Application number: CN 200520055011
Authority: CN
Inventors: 曾启丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-21
Filing date: 2005-02-21
Publication date: 2006-03-22
Anticipated expiration: 2015-02-21

Abstract

The utility model discloses a wood screw easily screwed in and out, which comprises a screw head, a rod body and a plurality of screw teeth, wherein one end of the rod body is fixedly arranged on the screw head, the other end is a free end, and meanwhile, the screw teeth are spirally and circularly arranged on the rod body around the central line of the rod body. Especially, a hole expanding area is formed on the screw teeth closing to the free end of the rod body, rib blocks tilted to the central line of the rod body are convexly arranged on the rod body between any two screw teeth in the hole expanding area, the end edges of any adjacent two rib blocks are tightly abutted on the same screw tooth. Therefore, in the process of screwing, when the rib blocks are carried out auxiliary cutting, objects to be screwed are carried out with gradual hole expansion so that torque force generated by the process of screwing in and out is reduced; the utility model not only can smoothly achieve the efficacy of easily screwing in and out, but also can prevent the inner parts of the objects from cracking, etc.

Description

The WOOD SCREWS of easily locking, withdrawing from

Technical field

The utility model relates to the design of a kind of screw, particularly can effectively reduce screw-ins, screws out torsion and prevent the WOOD SCREWS of easily locking, withdrawing from that the sealed object of desire chaps when sealed about a kind of.

Background technique

Consult Fig. 1, known screw 1 comprises a spiral shell head 11, a body of rod 12 and plural thread 13, and wherein, an end of this body of rod 12 is to be fixedly arranged on the spiral shell head 11, and the other end then is a free end 121, should plural number thread 13 be that whorl is located on this body of rod 12 simultaneously; Be with, when sealed, by the wood fiber of the winding in this thread 13 these fibrous objects 2 of cutting, and the wood fiber bits that the mat cutting produces accumulate, to reach screw 1 sealed, positioning function.

Yet, because this thread 13 is because of production problem when sharp inadequately, the cutting effect of this thread 13 will be influenced, and the incomplete wood fiber of cutting is wound on the body of rod 12, so the builder need bestow bigger screw-in torsion, beginning can allow this body of rod 12 be screwed into smoothly in this object 2, except that being easy to generate the anxiety that causes screw 1 fracture because of sealed torsion is excessive, also can influence the efficient of sealed process.

For this reason, the dealer develops another improvement screw 3; Consult Fig. 2, this screw 3 still includes a spiral shell head 31, a body of rod 32 and plural thread 33; Wherein, the lower surface 332 of the one thread 33 at contiguous these free end 321 places, and the upper surface 331 of corresponding thread 33 have protruded out a rib piece 34 respectively, simultaneously on this body of rod 32 and protruded out a connection piece 35, and this link 35 two ends and being connected with this rib piece 34 respectively; Therefore, during sealed operation, this rib piece 34 of mat is leading with connection piece 35, and this object 4 is produced the reaming effects, to reduce sealed resistance, reaches effects such as sealed process is rapid, laborsaving.

Only in view of of the design of this rib piece 34 with link 35, making this rib piece 34 is to be vertical aspect with the both sides of link 35 with the body of rod 32 surfaces, so work as this screw 3 in being screwed into process, this rib piece 34 is with the direct pushing tow extruded object 4 of vertical surface aspect with link 35, though can reach object 4 reaming effects, but because of this rib piece 34 and excessive contact of link 35 vertical surfaces, easily make sealed resistance still have excessive anxiety, except that the torsion that increases sealed moment, and torsion that should moment very easily cause object 4 split the material phenomenon; Otherwise when this screw 3 is desired to withdraw from, its rib piece 34 also is with the direct pushing tow extruded object 4 of vertical surface aspect with link 35, the resistance that withdraws from that causes this thread 33 to produce relatively increases, adding this screw 3 is being coated by the wood fiber of object 4 is staggered, and this rib piece 34 there is no shear action with link 35, causes in the process of withdrawing from, and the builder must bestow bigger back-out torsion, beginning can allow this body of rod 32 withdraw from this object 4 smoothly, causes awkward disappearance.

The model utility content

Therefore, the purpose of this utility model is the WOOD SCREWS of easily locking, withdrawing from providing a kind of, and the reaming effect of mat rib piece when it is sealed except that the torsion that tool reduce to screw in and screws out, also has concurrently and prevents that the sealed object of desire from producing effect such as split.

For achieving the above object, solution of the present utility model is: a kind of WOOD SCREWS of easily locking, withdrawing from, it includes a spiral shell head, a body of rod and plural thread, wherein, one end of this body of rod is to be fixedly arranged on Luo Toushang, the other end then is a free end, simultaneously should the plural number thread is to be that center convolution is located on this body of rod with body of rod center line; Particularly: be formed with a reaming district on the free-ended thread of the nearly body of rod, and convex with one and the rib piece that is inclined to set of body of rod center line on the body of rod between wantonly two threads this reaming district in, and this adjacent both sides of the chest piece ora terminalis and being closely against on the same thread.

This rib piece is the triangle cone.

Offer on this rib piece so that rib piece surface forms jagged plural groove.

Be formed with a reaming district on the thread of this nearly spiral shell head in addition, and convex with a rib piece that is inclined to set with body of rod center line on the body of rod between wantonly two threads in this reaming district, and both sides of the chest piece ora terminalis that should be adjacent and being closely against on the same thread.

After having adopted such scheme, in sealed process, when this rib piece of mat carries out assisted machining, and the sealed object of desire carried out gradual reaming, the torsion that produces when locking and withdrawing from reduction, except that can successfully reaching the effect of easily locking and withdrawing from, also prevented the inner phenomenon such as split that produces of this object simultaneously.

Description of drawings

Fig. 1 is the locked state schematic representation of known screw;

Fig. 2 is the locked state schematic representation of another known screw;

Fig. 3 is the locked state schematic representation of first preferred embodiment of the present utility model;

Fig. 4 is the schematic representation of second preferred embodiment of the present utility model;

Fig. 5 is the 3rd preferred embodiment of the present utility model.

5 WOOD SCREWS of easily locking, withdrawing from, 51 spiral shell heads

52 bodies of rod, 53 threads

54,54 ' reaming district, 521 free ends

541 rib pieces, 542 grooves

6 fibrous object a body of rod center lines

Embodiment

About aforementioned and other technology contents, characteristics and effect of the present utility model, in the following detailed description that cooperates with reference to graphic preferred embodiment, can clearly understand.

Before the utility model is described in detail, be noted that in the following description similarly assembly is to represent with identical numbering.

Consult Fig. 3, first preferred embodiment of the WOOD SCREWS 5 that the utility model is easily locked, withdrawed from, it includes a spiral shell head 51, a body of rod 52 and plural thread 53, wherein, one end of this body of rod 52 is to be fixedly arranged on the spiral shell head 51, the other end then is a free end 521, simultaneously should plural number thread 53 is to be that center convolution is located on this body of rod 52 with body of rod center line a; Particularly, be formed with a reaming district 54 on the thread 53 of the free end 521 of the nearly body of rod 52, and convex with one and the rib piece 541 that is inclined to set of body of rod center line a on the body of rod 52 that wantonly two threads in this reaming district 54 are 53, and aforementioned this rib piece 541 is to be the triangle taper designs, and this adjacent appointed both sides of the chest piece 541 ora terminalis and be closely against on the same thread 53 simultaneously.

When this screw 5 carries out sealed operation on treating sealed object 6, when being screwed into gradually along with thread 53, utilize this rib piece that is obliquely installed 541 effects, decapacitation assisted machining object 6, be able to the most laborsaving and gradual pushing tow simultaneously and push this object 6, mat makes sealed process produce the effect of moment reaming, to reach the effect of leading open circuit, following sealed path in order to do the follow-up thread 53 of profit promptly enters outside this object 6, and can effectively reduce this thread 53 and be screwed into the resistance that is produced, relatively, this thread 53 required sealed moment of torsion that bears in sealed process also can reduce, so the builder can reduce the required screw-in torsion of bestowing, with obvious this screw 5 of extruding degree improve to(for) the integral body of this object 6, avoid this object 6 to produce and split the material situation, and reach better sealed location effect.

Otherwise, when this screw 5 was desired to withdraw from, the rib piece 54 pushing tow extruded objects 6 that mat should oppositely be provided with also can produce outside the reaming effect, cooperate 54 pairs of objects 6 of this rib piece to do gradual cutting again, cause follow-up thread 53 to withdraw from this object 6 smoothly, reduce the resistance that this thread 53 is produced in withdrawing from process, relatively, the builder can reduce the back-out torsion of being bestowed, also say it, the builder only need bestow a less strength, can make this screw 5 withdraw from this object 6 easily, reaches effect such as easy to use.

Consult Fig. 4, second preferred embodiment of the present utility model, it still includes members such as a spiral shell head 51, a body of rod 52 and plural thread 53; Wherein, the mutual pass that links is between aforementioned each member structure and each member, and it is described all to be same as first preferred embodiment, does not give unnecessary details for this reason, and particularly, present embodiment is to offer in addition on this rib piece 541 plural groove 542 again, so that these rib piece 541 surface formation flexuoses; So when sealed, except that producing the effect of moment reaming by this rib piece 54, cooperate simultaneously these rib piece 541 surface institute's flexuose aspects that form again and to object 6 generation sawing effects, more can effectively reduce this thread 53 and be screwed into the resistance that is produced, and it is reduce the required screw-in torsion of bestowing of builder really, so more rapid, laborsaving on using.

Consult Fig. 5, the 3rd preferred embodiment of the present utility model, it still includes members such as a spiral shell head 51, a body of rod 52 and plural thread 53; Wherein, link mutually to close between aforementioned each member structure and each member and be, it is described all to be same as first preferred embodiment, do not give unnecessary details for this reason, particularly, be formed with in addition on the thread 53 of this nearly spiral shell head 51 a reaming district 54 ', also convex with a rib piece 541 that is inclined to set with body of rod center line a on the body of rod 52 that wantonly two threads in and this reaming district 54 ' interior are 53, and both sides of the chest piece 541 ora terminalis that should be adjacent and being closely against on the same thread 53; Therefore, when these screw 5 length are longer, just can by another reaming district 54 ' design so that this screw 5 produces moment reaming effect in sealed process, promote the effect easily lock, withdraw from more.

Conclude aforementioned, the WOOD SCREWS that the utility model is easily locked, withdrawed from, utilize on the body of rod between these wantonly two threads and convex with the rib piece that is obliquely installed, and this is adjacent appoints both sides of the chest piece ora terminalis and is closely against design on the same thread, so that it is sealed and withdraw from the process and to produce moment reaming effect, enter smoothly and withdraw from order to do the follow-up thread of profit,, screw-in when withdrawing from sealed, screw out torsion to reduce, prevented the effects such as situation generation of the sealed object be full of cracks of desire simultaneously, mat and reach easily the purpose of locking, withdraw from this object etc., file an application in the whence in accordance with the law.

The above person of thought, only be explanation preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this, promptly the simple equivalent of doing according to the utility model claim and description generally changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1, a kind of WOOD SCREWS of easily locking, withdrawing from, it includes a spiral shell head, a body of rod and plural thread, and wherein, an end of this body of rod is to be fixedly arranged on Luo Toushang, the other end then is a free end, simultaneously should the plural number thread is to be that center convolution is located on this body of rod with body of rod center line; It is characterized in that: be formed with a reaming district on the free-ended thread of the nearly body of rod, and convex with a rib piece that is inclined to set with body of rod center line on the body of rod between wantonly two threads in this reaming district, and both sides of the chest piece ora terminalis that should be adjacent and being closely against on the same thread.

2, the WOOD SCREWS of easily locking, withdrawing from as claimed in claim 1 is characterized in that: this rib piece is the triangle cone.

3, the WOOD SCREWS of easily locking, withdrawing from as claimed in claim 1 is characterized in that: offer on this rib piece so that rib piece surface forms jagged plural groove.

4, the WOOD SCREWS of easily locking, withdrawing from as claimed in claim 1, it is characterized in that: be formed with a reaming district on the thread of this nearly spiral shell head in addition, and convex with a rib piece that is inclined to set with body of rod center line on the body of rod between wantonly two threads in this reaming district, and both sides of the chest piece ora terminalis that should be adjacent and being closely against on the same thread.