CN204436052U - A kind of three layers of blade-type lock core - Google Patents

Abstract

The utility model discloses a three-layer blade type lock core, which comprises a lock shell and a key. Two left and right lock cores are installed in the lock shell through a snap spring, and a shift fork and a lock core are installed between the two lock cores. For the transmission part, a key hole is opened in the lock cylinder in the axial direction, and a blade groove is opened in the radial direction. The first layer of blades, the second layer of blades and the third layer of blades are inserted into the blade grooves. The first layer of blades, the second layer of blades The blades and the third layer of blades are equipped with tooth flower blocks and side column notches, the first leaf spring is installed between the first layer of blades and the second layer of blades and the blade grooves, and the third layer of blades is installed between the blade grooves. There is a second leaf spring, and a lock cylinder side column is arranged between the lock cylinder and the lock case, and a side column pin, a side post spring, and a lock case sealing steel ball are installed in the side wall of the lock case, and a supporting lock is installed in the side wall of the lock case. A pointed marble for the core; beneficial effects: practicality, low production cost, convenient use, improved technical difficulty in unlocking, good anti-theft effect, and more secure.

Description

A three-layer blade lock cylinder

technical field

The utility model relates to an inner part of a lock, in particular to a three-layer blade type lock cylinder.

Background technique

Any type of blade lock cylinder currently on the market, its blades are designed to slide left and right on the same plane, and most of the structures still use the inherent double-sided blade type, which has certain limitations. As far as the society is concerned, it undoubtedly provides an opportunity to take advantage of. This type of lock is easy to open through technical unlocking, and it is not safe enough to use.

Utility model content

The technical problem to be solved by the utility model is to provide a three-layer blade type lock cylinder for the deficiencies of the prior art.

In order to achieve the above object, the measures taken by the utility model:

A three-layer blade type lock cylinder, including a lock case and a key, two left and right lock cylinders are installed in the lock case through a circlip, a shift fork and a transmission part are installed between the two lock cylinders, and the lock cylinder A key hole is opened in the axial direction, and a blade groove is opened in the radial direction. The first layer of blades, the second layer of blades and the third layer of blades are inserted into the blade slots. The first layer of blades, the second layer of blades and the third layer of blades The blades are all provided with tooth flower blocks and side column notches, the first leaf spring is installed between the first layer of blades and the second layer of blades and the blade groove, and the second leaf spring is installed between the third layer of blades and the blade groove , between the lock cylinder and the lock case, there is a lock cylinder side post, and the side post pins, side post springs and lock case sealing steel balls are installed in the side wall of the lock case, and the side post pins are pressed against the side of the lock cylinder by the elastic force of the side post springs On the column, the side wall of the lock case is installed with a pointed pin used to withstand the lock cylinder, and the outside of the pointed pin is sequentially provided with a ball, a flat pin, a pin spring and a lock shell sealing steel ball;

There are five blade slots in the lock core, each blade slot is inserted with a first layer of blades, a second layer of blades and a third layer of blades, and fifteen blades are arranged in the lock core;

The first layer of blades, the second layer of blades and the third layer of blades are all provided with four extreme differences, and among the three blades of the first layer of blades, the second layer of blades and the third layer of blades, two of the blades are The outer milling groove of the key is matched, and the other one is matched with the inner milling groove of the key;

The tooth flower blocks on the first layer of blades, the second layer of blades and the third layer of blades are respectively set to three different heights, and the key is milled with three grooves corresponding to the depth of the tooth flower blocks;

The side column notches on the first layer of blades, the second layer of blades and the third layer of blades are respectively set to three different heights;

The side column of the lock cylinder has a rectangular cross-section, and the notch of the side column has a trapezoidal structure.

The beneficial effects of the utility model are: practicality, low production cost, convenient use, increased technical difficulty in unlocking, good anti-theft effect and more safety.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of the utility model.

Fig. 2 is a schematic diagram of the assembly plane structure of the utility model.

Fig. 3 is a schematic diagram of the planar structure of the first layer of blades of the present invention.

Fig. 4 is a schematic diagram of the planar structure of the second layer of blades of the present invention.

Fig. 5 is a schematic diagram of the planar structure of the third layer of blades of the present invention.

Detailed ways

A three-layer blade type lock cylinder, including a lock case 1 and a key 6, in the lock case 1, two left and right lock cylinders 3 are installed through a snap spring 2, and a shift fork is installed between the two lock cylinders 3 4 and the transmission part 5, a key hole is opened in the lock cylinder 3 in the axial direction, and a blade groove is opened in the radial direction, and the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 are inserted in the blade grooves, and the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 The first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 are all provided with tooth flower blocks and side column notches, and the first layer of blades 7 and the second layer of blades 8 are installed between the blade grooves. Spring 10, a second blade spring 11 is installed between the third blade 9 and the blade groove, a lock cylinder side post 12 is arranged between the lock cylinder 3 and the lock case 1, and a side post pin 13 is installed in the side wall of the lock case 1 , side post spring 14 and lock case sealing steel ball 15, side post pin 13 is pressed on the lock core side post 12 by the elastic force of side post spring 14, and the side wall of lock case 1 is installed with and is installed with withstood the usefulness of lock core 3 Point pin 16, the outside of pin pin 16 is provided with ball 17, flat pin 18, pin spring 19 and lock casing sealing steel ball 15 in sequence.

The lock core 3 is provided with five blade grooves, each blade groove is inserted with a first layer of blades 7, a second layer of blades 8 and a third layer of blades 9, and the lock core 3 is provided with fifteen blades .

In each blade groove, three blades of the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 form a blade group, five blade grooves, a total of five blade groups, fifteen blades, the first The layer blades 7, the second layer blades 8 and the third layer blades 9 are all provided with four poles, and the blades slide under the driving conditions of the spring force respectively, wherein the first layer blades 7 and the second layer blades 8 share the first The elastic force of the leaf spring 10, the elastic force of the second leaf spring 11 for the third layer of blades 9.

The benefit obtained is: the number of blades increases, and the difficulty of opening increases, and return springs (the first leaf spring 10 and the second leaf spring 11) are all equipped. If the correct key 6 is not used, if you want to control the additional structure through tools, The difficulty of unlocking is greatly increased.

The first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 are all provided with four extreme differences. Among the three blades of the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9, Wherein two blades are to cooperate with the outer milling groove of key 6, and another one is to cooperate with the inner milling groove of key 6.

The first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 respectively adopt three different structures, two of which are matched with the outer milling groove of the key 6, and the other is matched with the inner milling groove of the key 6 , the above-mentioned first layer of blades 7, second layer of blades 8 and third layer of blades 9 are all provided with four extreme differences, then the inner blades of the assembled lock cylinder 3 have 3*4=12 kinds of blade structure combinations, choose Fifteen pieces are randomly arranged.

Advantages: The amount of keys is large, exceeding billions. The blade structure is chaotic, avoiding the original principle of symmetrical combination of blade structure, and it is difficult to detect data, so it is almost impossible to design an opening tool.

The teeth flower blocks on the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 are respectively set to three different heights (high, medium, low), and the key 6 is milled with three depths and teeth. The slot corresponding to the flower block.

When the correct key 6 is inserted, the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 are at different heights respectively, and move along the notch of the key 6 by their respective tooth flower blocks until they reach the unlocked position.

Advantages: It avoids the defect of the original blade lock cylinder adopting the same height tooth flower design. In terms of designing the opening tool, as long as the original structure is based on the height of the tooth flower, the characteristics of the opposite arrangement of the same blades and the spatial position of the keyhole, it may be possible to design the corresponding plane opening tool. When you open the tool, you can only touch one layer of leaf tooth flower at most, and the two layers higher than the lowest end cannot be touched. Even if the tool is designed so that the teeth and flower blocks of high and low blades can be touched, it will not be able to be inserted because the keyhole is stepped in the shape of a "Z". Picking the lock, except with the correct key 6, is next to impossible.

The side column notches on the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 are respectively set to three different heights (high, middle, low).

The notches of the side columns are set at three different heights. When criminals want to use a tool to open the lock, they must first set the blade on the highest layer, otherwise the side columns will not touch the edge of the lower blade at all. Post notch, even alignment does not help. Because each layer of blades is provided with back-moving springs (the first leaf spring 10 and the second leaf spring 11), if the highest layer is set right, the middle layer will be touched, and the previous layer will not let go, and then the middle layer will be set right. Adjust from the middle layer and then fix it, and then adjust the lowest layer..., such a cycle, the purpose of unlocking cannot be achieved, and it is safe to use.

The cross-section of the side column 12 of the lock cylinder is a rectangular structure, and the notch of the side column is a trapezoidal structure.

Only after the relative sliding of the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9, after the edge column notches on the first layer of blades 7, the second layer of blades 8 and the third layer of blades 9 overlap each other, When its width is enough to make the lock cylinder side post 12 slide down, the lockset can be opened.

Advantages: It avoids the defect that the bottom of the side column of the blade lock cylinder fits with the triangle top angle of the blade notch, eliminates the possibility of idle rotation of the lock cylinder when the range is small, and increases the difficulty of opening considerably.

Claims (6)

1. A three-layer blade type lock cylinder, comprising a lock case (1) and a key (6), is characterized in that: left and right two locks are installed in the described lock case (1) by a snap spring (2) A shift fork (4) and a transmission member (5) are installed between the two lock cylinders (3). A key hole is provided in the lock cylinder (3) along the axial direction, and a blade groove is provided along the radial direction. The first layer of blades (7), the second layer of blades (8) and the third layer of blades (9) are inserted in the blade groove, and the first layer of blades (7), the second layer of blades (8) and the third layer of blades ( 9) are provided with tooth pattern blocks and side column notches, the first leaf spring (10) is installed between the first layer of blades (7) and the second layer of blades (8) and the blade groove, and the third layer of blades ( 9) A second leaf spring (11) is installed between the blade groove, a lock cylinder side column (12) is arranged between the lock cylinder (3) and the lock housing (1), and a lock cylinder side column (12) is installed in the side wall of the lock housing (1). Side post slingshot (13), side post spring (14) and lock casing sealing steel ball (15), side post slingshot (13) is pressed on the lock core side post (12) by the elastic force of side post spring (14), lock The shell (1) side wall is equipped with a pointed marble (16) that is installed to withstand the usefulness of the lock core (3), and the pointed marble (16) is provided with a ball (17), a flat marble (18), a pin spring ( 19) and lock housing sealing steel ball (15). 2. A three-layer blade lock cylinder according to claim 1, characterized in that: five blade grooves are opened in the lock cylinder (3), and the first layer of blades is inserted into each blade groove (7), the second layer of blades (8) and the third layer of blades (9), fifteen blades are arranged in the lock cylinder (3). 3. A three-layer blade lock cylinder according to claim 1 or 2, characterized in that: the first layer of blades (7), the second layer of blades (8) and the third layer of blades (9) All are equipped with four poles, among the three blades of the first layer of blades (7), second layer of blades (8) and third layer of blades (9), two of the blades are external milling grooves with the key (6) Cooperate, and another one is to cooperate with the inner milling groove of key (6). 4. A three-layer blade lock cylinder according to claim 3, characterized in that: the first layer of blades (7), the second layer of blades (8) and the third layer of blades (9) The tooth flower blocks are respectively set to three different heights, and the key (6) is milled with three grooves corresponding to the tooth flower blocks. 5. A three-layer blade lock cylinder according to claim 3, characterized in that: the first layer of blades (7), the second layer of blades (8) and the third layer of blades (9) The side post notches are individually set to three different heights. 6. A three-layer blade type lock cylinder according to claim 5, characterized in that: the cross-section of the side column (12) of the lock cylinder is a rectangular structure, and the notch of the side column is a trapezoidal structure.