CN1262724C

CN1262724C - Anti high tension structure of lock core of door lock

Info

Publication number: CN1262724C
Application number: CN 200310111962
Authority: CN
Inventors: 阮家强
Original assignee: HUAYI HARDWARE PRODUCT CO Ltd TAISHAN
Current assignee: Huamei Hardware Product Co., Ltd., Taishan
Priority date: 2003-10-27
Filing date: 2003-10-27
Publication date: 2006-07-05
Anticipated expiration: 2023-10-27
Also published as: CN1540122A

Abstract

The present invention relates to an anti-strong tension structure of a lock core of a door lock. The door lock comprises a lock body, a lock core arranged in the lock body, a deflector rod connected with the lock core and spring groups respectively arranged in the lock body and the lock core. The present invention is characterized in that a fixing piece for resisting axial tension is arranged between the lock core and the lock body, and the fixing piece is an annular body with an elastic opening; the inner wall of the annular body is provided with at least one rotation stopping bulge for preventing the fixing piece and the lock core from generating corresponding rotation, and the rotation stopping bulge is arranged in a rear end cover connected to the rear part of the lock core; the part of the annular surface of the fixing piece, which is adjacent to an internal diameter, is embedded into an annular groove arranged in the lock core, the edge of one side of the part adjacent to an external diameter is positioned in the position of a positioning step of the rear end cover, and the edge of the other side adjacent to an external diameter is tightly in contact with the outer edge of a lock hole of the lock body; the rotation stopping bulge of the fixing piece is embedded into a positioning hole arranged in the lock core, and a strutting piece for preventing the radial deformation of the lock core is arranged in the inner hole of the rear end part of the lock core. The present invention can effectively improve the tensile strength and the safety of the lock core and defend against the breakage of the strong tension of an axial direction.

Description

The anti drawing strongly power structure of door lock lock gall

Technical field

The present invention relates to door lock, particularly relate to a kind of tensile strength and reach the American National primary standard, can prevent the anti drawing strongly power structure of the door lock lock gall that lock gall is pulled out in the lock body vertically under forceful action.

Background technology

Lock is the most general a kind of safety appliance that people use, and has a wide range of applications on the object of building needs keyings such as door, body door and case, bag or utensil.The common lock of people mainly contain be fixed in the door or objects such as case, bag on fixed lock and the padlock of free-standing, and these locks can be divided into key operated lock with the lock of password unlatching, wherein door lock is that people contact and use maximum locks, although form is different, but its basic structure comprises lock body, is contained in lock gall in the lock body, is contained in the pellet shot from a slingshot group in lock body and the lock gall and the driving lever that is connected with lock gall etc.Traditional door lock is not owing to have tensile structure between lock body and lock gall, thereby lock gall does the time spent and very easily pull out from lock body being subjected to axial strong pulling force, thereby is damaged, and loses safety effect.Arrive user's safety in utilization based on the security protection interactively of door lock, various countries have all formulated the concrete standard and the method for test to the tensile strength of lock gall, as in the U.S. BHMA national standard this tensile strength being divided into three grades, wherein the standard one-level is 11000N, two 4800N very, three grades is 2300N.Traditional door lock is because no tensile structure, thereby all can't reach the primary standard of anti drawing strongly power, therefore use safety inadequately still.

Summary of the invention

The present invention is intended to address the above problem, and a kind of tensile structure that is provided with between lock gall and lock body is provided, thereby can effectively improve the tensile strength and the safety of lock gall, makes it to resist the anti drawing strongly power structure of the door lock lock gall that axial strong pulling force destroys.

For achieving the above object, the invention provides a kind of anti drawing strongly power structure of door lock lock gall, this structure comprises lock body, be contained in lock gall, the driving lever that links to each other with lock gall in the lock body and be contained in pellet shot from a slingshot group in lock body and the lock core respectively, it is characterized in that, between lock gall and lock body, be provided with the fixture that the opposing axial tension is used, this fixture is contained in the rear end cap that is connected in the lock gall rearward end, and in lock gall rearward end endoporus the support member that prevents that its radial deformation from using is housed.

The nearly rear end outer wall of lock gall is provided with the annular groove that embeds for fixture, is provided with the annular support member positioning step in the endoporus of end thereafter.

The rear end cap inwall is provided with the internal thread that is connected usefulness with lock gall, and its bottom is provided with the hole of passing for driving lever, and it is provided with the annular fixing member positioning step by inboard, opening end end.

Fixture is a rubber-like opening ring bodies, and its inner wall of ring body is provided with at least one spline projection that prevents that itself and lock gall from producing relative rotation.In the annular groove on the inner path portion embedding lock gall of the anchor ring of fixture, its outer path portion one lateral edges is positioned the positioning step place of rear end cap, the opposite side edge is closely attached on the outward flange of the lockhole of lock body, and the spline projection of fixture then embeds in the locating hole on the lock gall.

Support member is circular blocks, and it is contained in the support member positioning step place of lock gall.

Contribution of the present invention is that it efficiently solves the anti drawing strongly power problem of door lock, has increased substantially the tensile strength and the security performance thereof of door lock.Owing between lock gall and lock body, be provided with tensile structure, and this structure organically incorporates in the overall structure of lock, can effectively limit moving axially of lock gall by this structure, and greatly improved the supporting capacity of lock gall to axial tension, the lock gall tensile test (as Fig. 3) of being undertaken by U.S. BHMA national standard shows, the tensile strength of this lock reaches the primary standard of defined, and promptly lock gall can bear the pulling force of 11000N.Significantly improving of lock gall tensile strength also makes the security performance of lock improve greatly.Characteristics such as the present invention also has simple in structure, and is easy to implement, with low cost.

Description of drawings

Fig. 1 is a parts exploded perspective schematic diagram of the present invention.

Fig. 2 is a partial sectional view of the present invention.

Fig. 3 is a lock gall tensile test schematic diagram of the present invention.

The specific embodiment

The following example is to further explanation of the present invention and explanation, and the present invention is not constituted any limitation.

As shown in Figure 1, the anti drawing strongly power structure of door lock lock gall of the present invention comprises lock body 10, lock gall 20, driving lever 30, pellet shot from a slingshot group 40, rear end cap 50, fixture 60 and support member 70, above-mentioned member connects into door lock as shown in Figure 2, wherein, lock gall 20 is contained in the lock body 10, pellet shot from a slingshot group 40 is contained in lock body 10 and the lock gall 20, and the lock gall rear end is connected with rear end cap 50, and lock gall and lock body are fixing by fixture 60.As Fig. 1, lock body 10 is made of the rectangular block flank 12 that shoots sub-usefulness of dress lock gall cylindrical body of using 11 and the one with it of being located at its outside, have row's pellet shot from a slingshot hole 121 on the flank 12, " worker " font pellet shot from a slingshot 42A and a marble spring 43 are housed respectively in each pellet shot from a slingshot hole from the bottom to top, a cylinder-shaped marble 42B and a marble spring 43 wherein are housed in the pellet shot from a slingshot hole of rearmost end, and 121 outsides, pellet shot from a slingshot hole are sealed by mounting 44.In the cylinder 11 of lock body, lock gall 20 is housed, have the row pellet shot from a slingshot hole 23 corresponding on this lock gall with the pellet shot from a slingshot hole 121 on the lock body, this pellet shot from a slingshot hole is connected with axial key hole 24 on the lock gall, a cylindrical pellet shot from a slingshot 41 down is housed in each pellet shot from a slingshot hole, and the difference of pellet shot from a slingshot is arranged and is constituted different passwords.Be provided with the external screw thread 25 that is connected usefulness with rear end cap 50 in the lock gall rearward end outside, be provided with the annular groove 21 that embeds for fixture 60 near the nearly rear end of externally threaded lock gall outer wall, be provided with a fixture locating hole (not shown) at this bottom portion of groove, and be provided with circular orientation step 22 in the endoporus of end thereafter, be used for the placement and the location of support member 70.Stretch out outside the lock body rear end of lock gall 20, its extension and rear end cap 50 form and are threaded by outer, internal thread 25,51 separately, and by shop bolt 54 and spring 55 stationary positioned, shop bolt and spring are contained in the pin hole (not shown) on the lock gall, the pin rearward end is passed the opening part that places the snap ring 31 in the rear end cap, the edge of the perforation 52 of rear end cap is fixed at its place, end axis rank, relatively rotates to prevent rear end cap and lock gall.Described rear end cap 50 inwalls are provided with the internal thread 51 that is connected usefulness with lock gall, its bottom is provided with the hole of passing for driving lever 30 52, the edge in this hole is dentation, the front end of driving lever 30 is connected with lock gall, stretch out outside the rear end cap in the hole 52 of its rear end on bottom, rear end cap is provided with circular orientation step 53 by inboard, opening end end, is used for fixing the location of part.

In order to improve the tensile strength of lock gall, the present invention is provided with tensile structure between lock gall and lock body, this structure as shown in Figure 2, it is at

lock gall

20 and 10 of lock bodies the fixture 60 that the opposing axial tension is used to be housed, the rubber-like opening ring bodies that this fixture 60 is made for brass, its inner wall of ring body is provided with a spline projection 61, is used to prevent that itself and lock gall from producing relative rotation.As Fig. 2, in the annular groove 21 on the inner path portion embedding lock gall of the anchor ring of fixture 60, its 61 of spline projection embeds in the locating hole (not shown) of these bottom portion of groove, produces relative rotation when rotating with lock gall to avoid fixture 60.The outer path portion posterior edges of fixture places positioning step 53 places of rear end cap 50 ends, makes it to be fixed in the rear end cap and can not be subjected to the axial tension distortion and outwards deviate from.The fixture forward edge is closely attached on the outward flange of the lockhole of lock body 10, makes it be subjected to stopping of lock body and the lock gall that is attached thereto is deviate from from lock body.

Be out of shape to the inside for preventing lock gall its part of stretching out the lock body rear end under tension, in lock gall rearward end endoporus, support member 70 is housed, this support member is circular blocks, it is contained in support member positioning step 22 places in the lock gall 20 rearward end lockholes, and it can stop lock gall to produce radial deformation to the lockhole direction under the radial pull effect.

As seen from Figure 2, in the above-mentioned tensile structure, because the inner path portion of fixture 60 embeds in the annular groove 21 on the lock gall 20 deeply, its outer path portion then is close to the lockhole edge on the lock body 10, makes can not deviate from from lock body owing to stopping of fixture when lock gall is subjected to axial strong pulling force.And because fixture is fastened onto in the rear end cap, the axial deformation that therefore can prevent fixture owing to be subjected to strong pulling force or outwards deviate from.In addition, the support member 70 that is contained in the lock gall 20 rearward end lockholes can stop lock gall to produce radial deformation to the lockhole direction.

Fig. 3 shows the method for testing of the lock gall tensile strength of being done by U.S.'s BHMA national standard of the present invention, during test, on lock gall, bore an instrument connection 80 vertically, bolt 90 is screwed in the instrument connection, carry out axial tension by testing standard by 90 pairs of lock galls of bolt with puller system, test shows that the tensile strength of this lock reaches the primary standard of defined.

Claims

1, a kind of anti drawing strongly power structure of door lock lock gall, comprise lock body (10), be contained in the lock gall (20) in the lock body, the driving lever that links to each other with lock gall (30) and be contained in lock body respectively and lock core in pellet shot from a slingshot group (40), it is characterized in that, between lock gall (20) and lock body (10), be provided with fixture (60), described fixture (60) is a rubber-like opening ring bodies, its inner wall of ring body is provided with at least one spline projection (61), this fixture is contained in the rear end cap (50) that is connected in lock gall (20) rearward end, and support member (70) is housed in lock gall rearward end endoporus, described support member (70) is circular blocks, and it is contained in the support member positioning step (22) of lock gall (20) and locates.

2, the anti drawing strongly power structure of door lock lock gall according to claim 1, it is characterized in that, the nearly rear end outer wall of described lock gall (20) is provided with the annular groove (21) that embeds for fixture (60), is provided with annular support member positioning step (22) thereafter in the endoporus of end.

3, the anti drawing strongly power structure of door lock lock gall according to claim 1, it is characterized in that, rear end cap (50) inwall is provided with the internal thread (51) that is connected usefulness with lock gall, the bottom of rear end cap is provided with the hole of passing for driving lever (30) (52), and rear end cap is provided with annular fixing member positioning step (53) by inboard, opening end end.

4, the anti drawing strongly power structure of door lock lock gall according to claim 1, it is characterized in that, in the annular groove (21) on the inner path portion embedding lock gall of the anchor ring of described fixture (60), the positioning step (53) that its outer path portion one lateral edges is positioned rear end cap (50) is located, the opposite side edge is closely attached on the outward flange of the lockhole of lock body (10), and the spline projection (61) of fixture then embeds in the locating hole on the lock gall.