CN202578166U - Violent-opening preventing lock head - Google Patents

Abstract

The utility model discloses a violent-opening preventing lock head, which comprises a lock head body and a lock cylinder, wherein ball holes and a key hole which are communicated with each other are formed in the lock cylinder, each ball in the ball holes is provided with a slot, a chute communicated with the ball holes is formed in the lock cylinder, a ferrule is arranged between the lock head body and the lock cylinder, an insert is arranged in the chute, the insert can be inserted into the slot, and the size of the insert along the internal and external opening directions of the chute is equal to the distance between the internal and external openings of the chute; a stop block is arranged in the wall body of the ferrule at interval, and the size S of the stop block along the radial direction of the ferrule is greater than the thickness A of the wall body of the ferrule; the depth of the slot is D, D is more than or equal to the difference between S and A and smaller than the sum of S and D, the stop block has the tendency of moving inwards along the radial direction of the ferrule, and the insert is separated from the slot by axial motion of the balls in the ball holes; and a limiting structure for limiting the sliding distance of the insert towards the ball direction is arranged between the inner wall of the chute and the surface of the insert. The lock head has a good violent-opening preventing effect, so that the theft-proof effect of a theft-proof door lock is effectively improved.

Description

Tapered end is opened in anti-violence

Technical field

The utility model relates to a kind of anti-violence that is applied on the safe-guard door lock and opens tapered end.

Background technology

The structure of existing theftproof lock tapered end mainly comprises tapered end and lock core; Lock core is arranged in the lock core hole in the tapered end rotationally; Be provided with keyhole and some pellets shot from a slingshot hole in the lock core; The pellet shot from a slingshot hole communicates with keyhole, is provided with a pellet shot from a slingshot and spring in each pellet shot from a slingshot hole, has differential between these pellets shot from a slingshot.For increasing the anti-intensity of turning round of lock core; It is axially arranged with V-shaped groove in the inwall upper edge of lock core hole; Be provided with inserted sheet and spring in the lock core; Spring action is used to make the radial outside protrusion of inserted sheet towards lock core on inserted sheet, the inserted sheet that protrudes into the lock core outside is through being plugged in the described V-shaped groove, and effectively increases the torsional strength between lock core and the tapered end.On the outer peripheral face of pellet shot from a slingshot, be provided with the slot of rectangle, the position of slot on pellet shot from a slingshot separately is differential corresponding with pellet shot from a slingshot, after lock core inserts key; Under the promotion of key; Slot on all pellets shot from a slingshot all is on the same position, radially inserts along lock core for inserted sheet, when key; The inserted sheet outside receive V-shaped groove shearing force and fully in lock core with not ing, thereby remove inserted sheet to blocking in relative rotation between lock core and the tapered end.This tapered end is when realizing locking; Mainly be to utilize inserted sheet and/or pellet shot from a slingshot to stop the rotation of lock core in tapered end; If tapered end is carried out the violence unlatching but utilize instrument to be inserted in the keyhole, still can open tapered end, the theftproof performance that has the safe-guard door lock of this tapered end is still waited to improve.

The utility model content

For overcoming above-mentioned defective, the purpose of the utility model is: provide a kind of anti-violence to open tapered end, the anti-violence of this tapered end is opened effective, can improve the theftproof performance of the safe-guard door lock that has this tapered end.

The technical measures of taking for achieving the above object: tapered end is opened in a kind of anti-violence, comprises tapered end and lock core, is provided with keyhole and some pellets shot from a slingshot hole in the lock core; The pellet shot from a slingshot hole communicates with keyhole, is provided with pellet shot from a slingshot and spring in the pellet shot from a slingshot hole, and the outer peripheral face of pellet shot from a slingshot is provided with slot; Be provided with the chute that communicates with the pellet shot from a slingshot hole in the lock core; The outer port part of chute is positioned on the cylindrical of lock core, between tapered end and lock core, is provided with lasso, is provided with inserted sheet in the chute; Inserted sheet can be plugged in the slot, and inserted sheet equals the distance between the inside and outside oral area of chute along the size on the inside and outside oral area direction of chute; The wall body internal clearance of lasso be provided with block, the size S that block directly makes progress along lasso is greater than the wall thickness A of lasso; The degree of depth of said slot is D, and S-A≤D＜S+D, block have the trend of radially inwardly moving along lasso, and the pellet shot from a slingshot axially-movable in the pellet shot from a slingshot hole impelling inserted sheet and slot are separated; Between chute inwall and inserted sheet surface, be provided with and be used to limit the position limiting structure of inserted sheet to pellet shot from a slingshot direction sliding distance.Block has the trend of radially inwardly moving along lasso, is meant that block and spring link, and the elastic force of spring impels block along radially inwardly the moving of lasso, and this spring can be arranged on the lasso, also can be the spring that pushes away that is arranged on the tapered end described as follows.Pellet shot from a slingshot axially-movable in the pellet shot from a slingshot hole can impelling inserted sheet and slot are separated; Be meant that inserted sheet has inclined-plane or convex globoidal fit structure between end of pellet shot from a slingshot and socket sidewalls; The sidewall of slot can be with respect to the setting of pellet shot from a slingshot axioversion, or the said end of inserted sheet has the fillet surface on inclined-plane or has the fillet surface of convex.In this tapered end, the shifting block on described lasso and the tapered end links, and only when lasso held together through block and lock core, lasso just can be followed lock core and rotated together, and then drives the action of shifting block on the tapered end.When not utilizing key that tapered end is opened; Owing to can not guarantee that all pellets shot from a slingshot all are on the correct position; Under the barrier effect of pellet shot from a slingshot outer peripheral face; Inserted sheet just not in lock core, the contact surface flush between contact surface between inserted sheet and the block and lock core and the tapered end, lock core can only dally in lasso.

Described D=S-A is provided with in the said tapered end and pushes away spring, and the elastic force that pushes away spring can act on the described inserted sheet.Push away spring and impel inserted sheet to have through in tapered end, being provided with, and the dimensional requirement that directly makes progress along lasso of slot, lasso wall thickness and block, can effectively simplify the internal construction of this tapered end, to make things convenient for the assembling of tapered end towards the trend of pellet shot from a slingshot direction motion.

The said spring that pushes away is provided with mobilizable block body towards an end of lasso.This has made things convenient for and has pushed away the effect of spring to block, is convenient to make things convenient for lasso to follow lock core and rotate together pushing away the good slideable fitting face of formation between spring and the inserted sheet.

The truncation surface of said block body is " [" shape.This be convenient to push away spring stably roof pressure on block body.

The peripheral region of said block body outer bottom is level and smooth cambered surface.Smoothness when this has improved block body and inserted sheet and slides relatively.

Described pellet shot from a slingshot hole is a blind hole.This is convenient to the processing in pellet shot from a slingshot hole, pellet shot from a slingshot and the spring good stability in the pellet shot from a slingshot hole.

Said keyhole has along the axially extended opening of lock core at the cylindrical place of lock core, and this opening is towards the inner peripheral surface of lasso.Keyhole is arranged on the cylindrical place of lock core, convenient processing to keyhole and pellet shot from a slingshot hole.

Said position limiting structure comprises the convex body of being located in the chute, on inserted sheet, has convex shoulder, and convex body can stop inserted sheet through convex shoulder.This position limiting structure simple in structure can effectively stop the distance that inserted sheet slides to the pellet shot from a slingshot direction.

Said convex body and convex shoulder near the surface be the cambered surface of coincideing each other.This is convenient to the disengaging between convex body and the convex shoulder, the stability in the time of effectively improving tapered end work.

The beneficial effect of the utility model is: because when not utilizing key that tapered end is carried out the violence unlatching; Lock core can only be to dally at lasso; It is effective that this makes the anti-violence of tapered end open, and can effectively improve the theftproof performance of the safe-guard door lock that has this tapered end.Described position limiting structure is set between chute and inserted sheet, through qualification to the inserted sheet sliding distance, in order to avoid the excessive roof pressure of inserted sheet on the bottom surface of slot on the pellet shot from a slingshot, makes things convenient for pellet shot from a slingshot in the pellet shot from a slingshot hole during axially-movable, the disengaging between slot and the inserted sheet.

Description of drawings

Fig. 1 is the transverse sectional view that tapered end is opened in this anti-violence.

Fig. 2 is that the transverse sectional view after tapered end is inserted into key is opened in this anti-violence.

Fig. 3 is the A portion structure for amplifying sketch map among Fig. 2.

The specific embodiment

This anti-violence is opened tapered end and mainly is made up of tapered end 1, lasso 3 and lock core 2, and lasso 3 all is plugged in the tapered end 1 with lock core 2 rotationally, and lasso 3 is between tapered end 1 and lock core 2.Radially be provided with some pellets shot from a slingshot hole along it in the lock core 2, be provided with pellet shot from a slingshot 4 and spring 5 in the pellet shot from a slingshot hole.Cylindrical place at lock core 2 is axially arranged with keyhole 11 along it, and keyhole 11 is formed with along lock core 2 axially extended openings with the position that lock core 2 cylindricals intersect, and this opening is towards the inner peripheral surface of lasso 3, and the pellet shot from a slingshot hole communicates with keyhole 11.

In lock core 2, radially be provided with chute 13 along it, intersect in the interior oral area of chute 13 and pellet shot from a slingshot hole, and outer port part is positioned on the cylindrical of lock core 2.In chute 13, be provided with inserted sheet 6, inserted sheet 6 can be in chute 13 along the radially sliding of lock core 2, the inner end of inserted sheet 6 can be plugged in the slot set on the pellet shot from a slingshot 4 10, this slot 10 ringwise.Inserted sheet 6 equals the distance between the chute 13 inside and outside oral areas along the size on the chute 13 inside and outside oral area directions, and promptly inserted sheet 6 can be contained in the chute 13 fully just.After in keyhole 11, inserting key 12, the slot 10 on all pellets shot from a slingshot 4 all is on the same position, and inserted sheet 6 can be plugged in these slots 10.After in inserted sheet 6 is plugged on the slot 10 on the pellet shot from a slingshot 4, during axially-movable, inserted sheet 6 can be separated with slot 10 pellet shot from a slingshot 4 in the pellet shot from a slingshot hole.

In the wall body of lasso 3, be provided with block 9, the size that block 9 makes progress along lasso 3 footpath is greater than the thickness of lasso 3 wall bodies, block 9 can be in the wall body of lasso 3 along the radial direction activity of lasso 3.The position of block 9 on lasso 3 is corresponding with the position of said inserted sheet 6, block 9 can with outer distolateral the leaning together of inserted sheet 6.The size that the degree of depth of slot 10, block 9 make progress along lasso 3 footpaths, and the size between the wall thickness three of lasso 3 has certain requirement.The degree of depth of supposing slot 10 is that D, lasso 3 wall thickness are that A, block 9 make progress along lasso 3 footpaths and be of a size of S, and then S is greater than A, and S-A≤D＜S+A.

Under the situation of D=S-A, in tapered end 1, be provided with and push away spring 8, this elastic force that pushes away spring 8 acts on 6 last times of inserted sheet through block 9, and inserted sheet 6 has towards the trend of pellet shot from a slingshot 4 directions motion.Be provided with block body 7 pushing away the end of spring 8 towards block 9 this moment, and the truncation surface of block body 7 is that " [" shape, block body 7 are socketed in this end that pushes away spring 8.The outer bottom of block body 7 is used for contacting with the corresponding end-faces of block 9, and for improving the smoothness of sliding between block 9 and the block body 7, the outer peripheral edges place of block body 7 outer bottoms is level and smooth cambered surface.

Under the situation of D＞S-A, when inserted sheet 6 was inserted into the basal surface position place of pellet shot from a slingshot 4 upper grooves, block 9 should be positioned at the thickness range of lasso 3 towards an end face of tapered end 1, and this just requires D＜S+A.In this case, after inserted sheet 6 was separated with pellet shot from a slingshot 4, block 9 protruded into the outside of lasso 3 possibly towards the end of tapered end 1, can be through on the internal face of tapered end 1, forming the cannelure that supplies block 9 these ends to peg graft.For impelling inserted sheet 6 to have trend, in lasso 3, need be provided with the elastic component that acts on the inserted sheet 6 to the motion of pellet shot from a slingshot 4 directions.

Between the surface of chute 13 inwalls and inserted sheet 6, be provided with barrier structure, this barrier structure is used to limit the distance that inserted sheet 6 slides to pellet shot from a slingshot 4 directions, can make inserted sheet 6 between the bottom surface of slot 10 on the end of pellet shot from a slingshot 4 and the pellet shot from a slingshot 4, have certain interval.This position limiting structure comprises the convex body 14 that is connected as a single entity with lock core 2, convex body 14 in chute 13 near the side in pellet shot from a slingshot hole.On inserted sheet 6, be provided with convex shoulder 15, the distance to the said slip of inserted sheet 6 limits convex body 14 through stopping convex shoulder 15.Convex body 14 and convex shoulder 15 both near the surface be arcwall face, the arcwall face on they both matches.

Claims (9)

1. tapered end is opened in an anti-violence, comprises tapered end and lock core, is provided with keyhole and some pellets shot from a slingshot hole in the lock core; The pellet shot from a slingshot hole communicates with keyhole, is provided with pellet shot from a slingshot and spring in the pellet shot from a slingshot hole, and the outer peripheral face of pellet shot from a slingshot is provided with slot; Be provided with the chute that communicates with the pellet shot from a slingshot hole in the lock core; The outer port part of chute is positioned on the cylindrical of lock core, it is characterized in that: between tapered end and lock core, be provided with lasso, be provided with inserted sheet in the chute; Inserted sheet can be plugged in the slot, and inserted sheet equals the distance between the inside and outside oral area of chute along the size on the inside and outside oral area direction of chute; The wall body internal clearance of lasso be provided with block, the size S that block directly makes progress along lasso is greater than the wall thickness A of lasso; The degree of depth of said slot is D, and S-A≤D＜S+D, block have the trend of radially inwardly moving along lasso, and the pellet shot from a slingshot axially-movable in the pellet shot from a slingshot hole impelling inserted sheet and slot are separated; Between chute inwall and inserted sheet surface, be provided with and be used to limit the position limiting structure of inserted sheet to pellet shot from a slingshot direction sliding distance.

2. open tapered end by the described anti-violence of claim 1, it is characterized in that: described D=S-A, be provided with in the said tapered end and push away spring, the elastic force that pushes away spring can act on the described inserted sheet.

3. open tapered end by the described anti-violence of claim 2, it is characterized in that: the said spring that pushes away is provided with mobilizable block body towards an end of lasso.

4. open tapered end by the described anti-violence of claim 3, it is characterized in that: the truncation surface of said block body is " [" shape.

5. open tapered end by the described anti-violence of claim 4, it is characterized in that: the peripheral region of said block body outer bottom is level and smooth cambered surface.

6. open tapered end by claim 1,2,3,4 or 5 described anti-violences, it is characterized in that: described pellet shot from a slingshot hole is a blind hole.

7. open tapered end by the described anti-violence of claim 6, it is characterized in that: said keyhole has along the axially extended opening of lock core at the cylindrical place of lock core, and this opening is towards the inner peripheral surface of lasso.

8. open tapered end by claim 1,2,3 or 4 described anti-violences, it is characterized in that: said position limiting structure comprises the convex body of being located in the chute, on inserted sheet, has convex shoulder, and convex body can stop inserted sheet through convex shoulder.

9. open tapered end by the described anti-violence of claim 8, it is characterized in that: said convex body and convex shoulder near the surface be mutual identical cambered surface.

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