CN106193812B - Safety lock and tapered end thereof - Google Patents

Abstract

The invention discloses a lock head, which comprises a lock core and a lock sleeve. A key insertion hole is arranged in the center of the lock core. At least one intermediate sleeve is sleeved between the lock core and the lock sleeve. The lock core and the middle A plurality of first locking components and at least one limiting component are provided between the sleeves, and a plurality of second locking components are provided between the intermediate sleeve and the locking sleeve; the lock head has a locking position and at least a second locking component. An unlocking position and a second unlocking position, the first unlocking position and the second unlocking position are separated by a predetermined angle α, and are separated by a predetermined distance in the depth direction of the key insertion hole. The present invention has a simple structure, realizes the design of two unlocking programs through an ingenious structure, two unlocking programs need to be completed in the unlocking process to finally realize the unlocking, greatly improves the difficulty of technical unlocking, improves the safety and anti-theft performance, and adopts pure mechanical Type structure design, high reliability and low cost. The invention further discloses a safety lock adopting the above-mentioned lock head.

Description

Safety lock and its lock head

technical field

The invention relates to a lock, in particular to a safety lock and a lock head thereof.

Background technique

Locks are the first line of defense against theft. People have higher and higher requirements for their anti-theft performance. Pin locks are the most widely used locks. However, due to the relatively simple structure of traditional pin locks, the anti-theft performance, especially the performance of anti-technical opening Poor, leading to frequent theft incidents, seriously affecting social security.

In order to improve the anti-theft performance of locks, various anti-theft locks are emerging in the market, such as various electronic locks, fingerprint locks, combination locks, etc. Although they can improve the anti-theft performance to a certain extent, the general structure design is complicated, the cost is high, and it needs to rely on Advanced electronic technology is prone to failure, low reliability and high maintenance cost.

Contents of the invention

In view of this, the present invention proposes a safety lock and its head with a simple structure and ingenious design, which adopts a purely mechanical structure and has the advantages of good anti-theft performance, high reliability, and low cost.

According to the first aspect of the present invention, a lock head is provided, including a lock core and a lock sleeve, the center of the lock core is provided with a key insertion hole, and at least one intermediate sleeve is set between the lock core and the lock sleeve, so that A plurality of first locking components and at least one limiting component are arranged between the lock cylinder and the middle sleeve, and a plurality of second locking components are arranged between the middle sleeve and the lock sleeve;

The lock head has a locking position and at least a first unlocking position and a second unlocking position, the first unlocking position and the second unlocking position are separated by a predetermined angle α, and are separated by a predetermined distance in the depth direction of the key insertion hole;

In the locked position, the lock core and the middle sleeve are connected and locked through a plurality of first locking components, and the middle sleeve and the lock sleeve are connected and locked through a plurality of second locking components, and the plurality of first locking components are connected with The plurality of second locking components are separated by a predetermined angle α;

In the first unlocking position, the lock cylinder and the intermediate sleeve are unlocked by the first locking component, and the lock core can rotate relative to the intermediate sleeve; in the second unlocking position, the first locking component and the limiting component are set at The part of the lock core and the second locking component are spliced correspondingly, the lock core and the middle sleeve are connected and locked, the second locking component releases the locking of the middle sleeve and the lock sleeve, and the lock core and the middle sleeve can rotate relative to the lock sleeve.

Further, the plurality of first locking components are arranged along the depth direction of the key insertion hole, and the limiting component is arranged below the plurality of first locking components, and is used to limit the key from entering the key insertion hole. Insertion depth in .

Further, both the first locking component and the second locking component use a combination of spring pins.

Further, the limiting component adopts a combination of marbles.

Further, the predetermined angle α is 90 degrees.

Further, a limit pin for limiting the rotation angle of the lock core relative to the middle sleeve is provided between the lock core, the middle sleeve and the lock sleeve.

The second aspect of the present invention also provides a safety lock, including a housing, a lock head and a lock pin, the lock head is any one of the lock heads described above, and the lock head is installed in the lock housing Inside, the lock pin is installed on the middle sleeve of the lock head.

The structure of the lock head of the present invention is simple, and the design of two unlocking procedures is realized through an ingenious structure. In the process of unlocking, two unlocking procedures need to be completed to finally realize unlocking, which greatly improves the difficulty of technical unlocking and improves the safety and anti-theft performance. Purely mechanical structure design, high reliability, low cost, has broad market prospects.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the sectional structure schematic diagram of lock head of the present invention in the initial state of unlocking;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the cross-sectional structure schematic diagram of place a-a in Fig. 1;

Fig. 4 is a schematic cross-sectional structure diagram of the lock head unlocking realization state of the present invention;

Figure 5 is a top view of Figure 4;

Fig. 6 is a schematic cross-sectional structure diagram at b-b in Fig. 4 .

Explanation of reference signs:

1. Lock cylinder; 11. Key jack; 2. Intermediate sleeve; 3. Lock sleeve; 41. First locking component; 42. Limiting component; 43. Second locking component; 5. Limiting pin; 6 ,key.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in Figure 1 and Figure 4, the lock head of this embodiment includes a lock cylinder 1 and a lock sleeve 3, the center of the lock cylinder 1 is provided with a key socket 11, and an intermediate sleeve is provided between the lock cylinder 1 and the lock sleeve 3 2. A plurality of first locking components 41 and a limiting component 42 are arranged between the lock cylinder 1 and the middle sleeve 2 , and a plurality of second locking components 43 are arranged between the middle sleeve 2 and the lock sleeve 3 . A plurality of first locking components 41 are arranged along the depth direction of the key insertion hole 11 , and a limiting component 42 is disposed below the plurality of first locking components 41 for limiting the insertion depth of the key 6 in the key insertion hole 11 . The plurality of first locking components 41 and the plurality of second locking components 43 are separated by a predetermined angle α, and in this embodiment, the predetermined angle α is preferably set to 90 degrees. A limit pin 5 for limiting the rotation angle of the lock core 1 relative to the middle sleeve 2 is provided between the lock core 1 , the middle sleeve 2 and the lock sleeve 3 .

In this embodiment, both the first locking component 41 and the second locking component 43 use a combination of spring pins formed by a combination of springs and multiple pins, and the limiting component 42 uses a combination of pins formed by a combination of multiple pins.

The lock head of this embodiment has a locking position, a first unlocking position and a second unlocking position. Locking is realized at the locking position, pre-unlocking is realized at the first unlocking position, and unlocking action is finally realized at the second unlocking position. 1-6 describe the working principle of this embodiment and the structural changes during the unlocking process in detail.

In the locked position, the lock head is in the locked state, the lock core 1 and the middle sleeve 2 are connected and locked by a plurality of first locking assemblies 41, and the middle sleeve 2 and the lock sleeve 3 are connected and locked by a plurality of second locking assemblies 43. The plurality of first locking components 41 and the plurality of second locking components 43 are separated by a predetermined angle α, and in this embodiment, the predetermined angle α is preferably set to 90 degrees.

When unlocking, as shown in Figures 1, 2, and 3, after inserting the key 6 into the key socket 11 of the lock cylinder 1 to a certain depth, due to the blocking effect of the limit assembly 42, the key 6 cannot continue to be inserted. At this time, the key 6 In the first unlocking position, as shown at point A in Figure 1, the length of the first locking component 41 changes with the insertion of the key 6, and unlocks the lock cylinder 1 and the middle sleeve 2, so that the lock cylinder 1 can be locked relative to the middle The sleeve 2 rotates, but the middle sleeve 2 and the lock sleeve 3 are still connected and locked together by the second locking component 43, and the unlocking action cannot be realized.

Turn the key 6 to drive the lock cylinder 1 to rotate. Due to the effect of the limit pin 5, the key 6 is rotated to a predetermined angle α, which is preferably set to 90 degrees in this embodiment, as shown in Figures 4, 5 and 6. At this time, A When the point and point B are on the same straight line, the part 41-1 of the first locking assembly 41 arranged on the lock cylinder 1 and the part of the limit assembly 42 arranged on the lock cylinder 1 follow the lock cylinder 1 to rotate to point B, and the The two locking components 43 are spliced together to form a new and complete spring pin combination. At this time, continue to insert the key 6 downwards, and the limit component 42 is squeezed into the hole of the second locking component 43, while the first locking component After the part 41-1 of the component located on the lock core 1 is engaged with the second locking component 43, the length of the lock core 1 and the middle sleeve 2 are locked together as the key 6 continues to be inserted, and the middle sleeve 2 and the lock are locked together. When the locked state is released between the sleeves 3, the lock head enters the second unlocking position. At this time, by turning the key 6, the lock core 1 and the middle sleeve 2 can be driven to rotate relative to the lock sleeve 3, thereby realizing the final unlocking action.

On the contrary, the operation steps of locking and pulling out the key 6 are basically opposite to the operation steps of unlocking. After locking the door, turn the key 6 until point A and point B are in a straight line, pull out a tooth, and then reversely turn 90 degree, you can pull out the key 6.

The structure of the lock head of this embodiment is simple, and the design of two unlocking procedures is realized through an ingenious structure. In the process of unlocking, two unlocking procedures need to be completed to finally realize unlocking, which greatly increases the difficulty of technical unlocking and improves the safety and anti-theft performance. Moreover, it adopts a purely mechanical structure design, has high reliability, low cost, and has broad market prospects.

It is worth noting that, the quantity of the middle cover 2 can also refer to the same principle of this embodiment to set more layers according to actual needs, so as to set more unlocking programs and further improve the anti-theft safety performance.

On this basis, this embodiment further provides a safety lock, including a housing, the lock head and a lock pin, the lock head is installed in the lock housing, and the lock pin is installed on the middle sleeve 2 of the lock head. Owing to adopting above-mentioned lock end, has all its advantages, therefore repeats no more here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (7)

1. A lock head, comprising a lock core (1) and a lock sleeve (3), the center of the lock core (1) is provided with a key socket (11), it is characterized in that: the lock core (1) and the lock At least one intermediate sleeve (2) is sleeved between the sleeves (3), and a plurality of first locking components (41) and at least one limiting component (42), a plurality of second locking components (43) are arranged between the middle sleeve (2) and the lock sleeve (3); The lock head has a locking position and at least a first unlocking position and a second unlocking position, the first unlocking position and the second unlocking position are separated by a predetermined angle α, and are separated by a predetermined distance in the depth direction of the key insertion hole (11); In the locked position, the lock cylinder (1) and the middle sleeve (2) are connected and locked through a plurality of first locking components (41), and the middle sleeve (2) and the lock sleeve (3) are locked through a plurality of second lock components. The locking components (43) are connected and locked, and the plurality of first locking components (41) and the plurality of second locking components (43) are separated by a predetermined angle α; In the first unlocking position, the locking of the lock core (1) and the middle sleeve (2) by the first locking assembly (41) is released, and the lock core (1) can rotate relative to the middle sleeve (2); position, the first locking component (41) and the limit component (42) are arranged on the part of the lock core (1) and the second locking component (43) is spliced correspondingly, the lock core (1) and the middle sleeve (2 ) is connected and locked, the second locking assembly (43) releases the locking of the middle sleeve (2) and the lock sleeve (3), and the lock core (1) and the middle sleeve (2) can rotate relative to the lock sleeve (3). 2. The lock cylinder according to claim 1, characterized in that: the plurality of first locking components (41) are arranged along the depth direction of the key insertion hole (11), and the limiting component (42) It is arranged under the plurality of first locking components (41), and is used to limit the insertion depth of the key (6) in the key insertion hole (11). 3. The lock head according to claim 1 or 2, characterized in that: both the first locking component (41) and the second locking component (43) are combined with spring pins. 4. The lock head according to claim 3, characterized in that: the limiting component (42) is a combination of marbles. 5. The lock head according to claim 1, characterized in that: the predetermined angle α is 90 degrees. 6. The lock head according to claim 1, characterized in that: between the lock cylinder (1), the middle sleeve (2) and the lock sleeve (3), there is a device for limiting the relative distance between the lock cylinder (1) and the lock cylinder (3). Describe the limit pin (5) of the rotation angle of the middle sleeve (2). 7. A safety lock, comprising a housing, a lock head and a lock pin, characterized in that: the lock head adopts the lock head according to any one of claims 1-6, and the lock head is installed on the lock In the shell, the lock pin is installed on the middle sleeve (2) of the lock head.