CN201173008Y - Anti-theft door lock core - Google Patents

Abstract

The utility model relates to a lock core of a burglarproof door lock, whose structure comprises a lock core shell, marbles and a positioning mechanism which is used for inserting and pulling a key, wherein the positioning mechanism which is used for inserting and pulling a key comprises inserting plates which are arranged inside the lock core shell at intervals along the axial direction of the lock core shell, a plurality of slots which are parallel to each other are arranged on the lock core shell, sheet-like movable plates are arranged in the slots at intervals, notches are arranged on the movable plates, the inserting plates can be inserted in the notches at intervals, and convex bodies are arranged on one sides of the movable plates, which are opposite to the notches, wherein the movable plates can be formed by one-shot through adopting the stamping mode. The utility model has the advantages of convenient production, process saving and low production cost.

Description

Antitheft door lock core

Technical field

The utility model relates to the lock core in a kind of safe-guard door lock.

Background technology

Lock core is the important composition parts of door lock, plays the opening and closing door lock.The structure of lock core comprises lock core shell and is located at the interior pellet shot from a slingshot of lock core shell, in order to increase the anti-function of turning round of lock core, also is provided with key plug detent mechanism on lock core.The structure of key plug detent mechanism comprises the inserted sheet that is provided with along lock core end play, be provided with the inserted sheet spring between inserted sheet and the lock core, the outside at inserted sheet is provided with ball, in the time of in lock core is assembled to tapered end, ball is under the effect of inserted sheet thrust, can snap fit onto in the V-shaped groove set in the tapered end, this has increased the anti-function of turning round of lock core, and is convenient to key and when plug a position reference can be arranged.

Also be provided with columniform removable pin in the key push-pull structure of the antitheft door lock core of existing structure, on lock core, be provided with the hard work cylindrical hole, these cylindrical holes are perpendicular to the axis of lock core, described removable pin is located in the cylindrical hole slidably, be processed with the open slot of the above-mentioned inserted sheet that is used to peg graft on the removable pin, on removable pin, also be provided with little convex body.Little convex body can with corresponding construction interoperation on the key, in key is inserted into lock core and after putting in place, removable pin moves to the operating position, this moment, the open recess on the removable pin was in the position of inserted sheet.The shearing force that V-shaped groove when lock core begins to rotate on the tapered end is applied on the ball makes ball oppress inserted sheet, and the open recess on the removable pin is that space has been reserved in the motion of inserted sheet, and inserted sheet enters in the open recess, and lock core can freely rotate in tapered end.

But the plug of the key on this lock core detent mechanism is adding requirement in man-hour height, need get out cylindrical hole on the lock core, process columniform removable pin, weld little convex body on removable pin.This processing mode complex process, required precision height, very easily the quality problems of property in batches appear.

The utility model content

The purpose of this utility model is the problem at the plug of the key on existing antitheft door lock core detent mechanism processing inconvenience, and provide a kind of easy to process, precision to be easy to guarantee, antitheft door lock core that cost of production is low.

The purpose of this utility model can realize by following technical proposal: a kind of antitheft door lock core, comprise lock core shell, pellet shot from a slingshot, key plug detent mechanism, key plug detent mechanism comprises inserted sheet, inserted sheet along the end play of lock core shell be located in the lock core shell, described lock core shell is provided with some grooves that are parallel to each other, be provided with the activity template of sheet the groove internal clearance, activity template is provided with recess, described inserted sheet can be plugged in this recess with gap, is provided with convex body on a side relative with recess on the activity template.

In this lock core, be provided with little recess on activity template, little recess is positioned at by the side of recess, and the degree of depth of little recess is less than the degree of depth of recess.

In this lock core, be provided with barrier sheet in the described groove, barrier sheet is positioned at the outside of inserted sheet, and the position in barrier sheet on inserted sheet is equipped with breach corresponding to each barrier sheet.

In this lock core, described barrier sheet is bridge shape, locates to be provided with opening at barrier sheet near the centre position of inserted sheet one side.

In this lock core, described barrier sheet outer side edges is curved, and its radian is consistent with the radian at slot opening place.

In this lock core, described pellet shot from a slingshot is the ladder cylinder, has the step that cooperates with pellet shot from a slingshot in lock core shell.

Compared with prior art, the beneficial effects of the utility model are:

The activity template of sheet can be by the mode one-shot forming of punching press in this lock core, than cylindrical processing, its precision is easier to control, do not need to adopt separately welding procedure, with regard to same set of mould, the structure of the activity template that institute's punching press is come out has good uniformity, has made things convenient for the assembling of lock core, has reduced the cost of production of lock core.The groove that is used for the assembling activity sheet on the lock core can adopt the mode of milling to process, and is convenient and swift, and precision is easy to guarantee.

Description of drawings

Fig. 1 is that this lock core is assemblied in the local longitudinal sectional view on the tapered end.

Fig. 2 is the longitudinal sectional view of lock core shell in this lock core.

Fig. 3 is that this lock core is assemblied in the transverse sectional view on the tapered end.

Fig. 4 is the structure for amplifying schematic diagram of activity template in this lock core.

Fig. 5 is the structure for amplifying schematic diagram of barrier sheet in this lock core.

The specific embodiment

In conjunction with Fig. 1, Fig. 2, Fig. 3, the structure of the utility model antitheft door lock core comprises lock core shell 2 and is located at the interior pellet shot from a slingshot 3 of lock core shell.

Lock core shell is columniform, and it is used to be assemblied in the tapered end 4, and can rotate in tapered end 4.Be provided with key plug detent mechanism on lock core shell, the structure of this detent mechanism comprises the inserted sheet of being located in the lock core shell 26, and inserted sheet 6 is along the axial setting of lock core shell, and inserted sheet 6 in the course of the work can be in the motion in the radial direction of lock core shell 2.Also be provided with inserted sheet spring 9 and ball 7 in lock core shell, the elastic force of inserted sheet spring 9 acts on the inserted sheet 6, and ball 7 is positioned at the outside of inserted sheet 6.Be provided with V-shaped groove 12 on tapered end 4, V-shaped groove 12 is positioned at the position of matching with lock core shell 2, and V-shaped groove 12 is along the axis direction setting of lock core shell 2.Under the effect of the elastic force of inserted sheet spring 9, inserted sheet 6 can force ball 7 roof pressures in V-shaped groove 12.

Be provided with several parallel grooves 13 in lock core shell 2, these grooves 13 are perpendicular to the axis of lock core shell 2, and groove 13 is arc on the cross section perpendicular to the lock core shell axis.See Fig. 4, be equipped with the activity template 10 of a sheet in each groove 13, activity template 10 can slide in groove 13.The side that activity template 10 is provided with near inserted sheet 6 is provided with recess 101, and described inserted sheet 6 can be plugged in the recess 101 with gap.In order to increase the anti-performance of dialling of lock core, also be provided with a little recess 102 at the side of recess 101, the degree of depth of little recess 102 is less than the degree of depth of recess 101.The little recess 102 that is provided with can be upset the sensation of burglar when utilizing instrument to push lock core aside, has increased the difficulty of pushing lock core aside.On the relative side of recess 101, be provided with convex body 103 on the activity template 10, convex body 103 be used for key 1 on curved groove match, in the process in the key 5 that key 1 inserts in the lock core shell 2, convex body 103 slides in curved groove, and makes activity template 10 swing in groove 13.After key 1 inserts and puts in place, activity template 10 remains static, recess 101 on the activity template 10 is positioned at the position of inserted sheet 6 at this moment, when rotational lock core, ball 7 is compressing inserted sheet 6 oppositely, inserted sheet is entered in the recess 101, also make ball 7 be separated from V-shaped groove 12 simultaneously, lock core can freely rotate in tapered end 4.When lock core turns to when making ball 7 be positioned at the position of V-shaped groove 12, under the effect of inserted sheet spring 9 elastic force, ball 7 enters in the V-shaped groove 12, and the inserted sheet 6 of this moment also is separated from the recess 101 on the activity template 10, at plug key 1 be, activity template 10 can and key 1 between realize accessible interlock.After extracting key 1, can not realize relatively rotating owing to the clamping of ball 7 between lock core and the tapered end 4.

In order to make activity template 10 motion stabilization in groove 13, the outside in activity template 10 in groove 13 embeds barrier sheet 8, the outward flange of barrier sheet 8 is curved, its radian is consistent with the radian of groove 13 opening parts, after barrier sheet 8 embedded in the groove 13, the outer edge of barrier sheet 8 was in the outer peripheral face of lock core shell 2.In order to satisfy the space requirement in activity template 10, inserted sheet 6 courses of work, be provided with breach 11 at inserted sheet 6 in the position of barrier sheet 8, and described barrier sheet 8 is bridge shape, locate to be provided with opening 81 near the centre position of inserted sheet side at barrier sheet, opening 81 and breach 11 are positioned at same axial positions on the lock core shell 2.

For the position of above-mentioned recess 101 on activity template 10, the curved groove on it and the key 1 structurally associated is set, and activity template 10 its side when motion can not be projected into the outside of groove 13, these requirements are easy to realize in design.

Described pellet shot from a slingshot 3 is the ladder cylinder, be provided with the step that cooperates with pellet shot from a slingshot 3 in the pellet shot from a slingshot hole in lock core shell 2, the bottom of pellet shot from a slingshot 3 can not lean against the bottom of keyhole in the lock core shell 2 like this, and the leading section of key 1 need not be made very sharp, has made things convenient for the processing of key 1.

Claims (6)

1, a kind of antitheft door lock core, comprise lock core shell, pellet shot from a slingshot, key plug detent mechanism, key plug detent mechanism comprises inserted sheet, inserted sheet along the end play of lock core shell be located in the lock core shell, it is characterized in that described lock core shell is provided with some grooves that are parallel to each other, be provided with the activity template of sheet the groove internal clearance, activity template is provided with recess, and described inserted sheet can be plugged in this recess with gap, is provided with convex body on a side relative with recess on the activity template.

2, antitheft door lock core as claimed in claim 1 is characterized in that being provided with little recess on activity template, little recess is positioned at by the side of recess, and the degree of depth of little recess is less than the degree of depth of recess.

3, antitheft door lock core as claimed in claim 1 or 2 is characterized in that being provided with barrier sheet in the described groove, and barrier sheet is positioned at the outside of inserted sheet, and the position in barrier sheet on inserted sheet is equipped with breach corresponding to each barrier sheet.

4, antitheft door lock core as claimed in claim 3 is characterized in that described barrier sheet is bridge shape, locates to be provided with opening at barrier sheet near the centre position of inserted sheet one side.

5, antitheft door lock core as claimed in claim 4 is characterized in that described barrier sheet outer side edges is curved, and its radian is consistent with the radian at slot opening place.

6, antitheft door lock core as claimed in claim 1 or 2 is characterized in that described pellet shot from a slingshot is the ladder cylinder, has the step that cooperates with pellet shot from a slingshot in lock core shell.

Images