CN103938927B - Key expander - Google Patents

Abstract

The invention discloses a key expander, comprising: a housing, a pair of opposite sides of the housing are provided with fixing plates outward, a main lock hole and several auxiliary lock holes are arranged in the housing, the housing The center of the opposite long side of the body is provided with a slider limiting plate inward; several lock cores, the lock cores are provided with rotating shafts, and the lock cores include a main lock core and a secondary lock core, and the main lock core and all lock cores The auxiliary lock core is respectively installed in the main lock hole and the auxiliary lock hole; several dead bolts are provided with rotating shaft connection holes, and the rotating shaft connecting holes are connected with the rotating shaft; a slider , the slider includes a front limiting surface and a rear limiting surface parallel to each other, the slider is placed in the housing, and is located between the main lock cylinder and the auxiliary lock cylinder. Through the above method, the key expander of the present invention adopts a purely mechanical design, has a high safety factor, and can satisfy the interlocking of multiple locks at the same time.

Description

key extender

technical field

The invention relates to the field of door locks, in particular to a key expander.

Background technique

In the purely mechanical interlocking system of "two locks sharing one key", sometimes "one control and one" cannot satisfy the needs of its users. For example, the "special program lock for isolating switch" needs to be interlocked with two cabinet doors, that is, three locks are interlocked, and the isolating switch can only be closed when both doors are closed; the two doors can only be opened after the isolating switch is in place. Doors, this "one control and many" operation has brought a lot of trouble to the operator.

Contents of the invention

The main technical problem to be solved by the present invention is to provide a key extender, which adopts a purely mechanical design, has a high safety factor, and can satisfy the interlocking of multiple locks at the same time.

In order to solve the above technical problems, a technical solution adopted by the present invention is: a key extender, characterized in that it includes:

A housing, the housing is rectangular, a pair of opposite sides of the housing are provided with a fixing plate outward, the fixing plate is provided with a fixing hole, and a main body is provided in the housing near the fixing plate. A lock hole, a side opposite to the main lock hole is provided with a number of auxiliary lock holes arranged parallel to the fixed plate, and a slider limit plate is arranged inwardly at the center of the opposite long side of the housing;

A plurality of lock cores, the lock core is provided with a rotating shaft, the lock core includes a main lock core and an auxiliary lock core, and the main lock core and the auxiliary lock core are respectively installed in the main lock hole and the auxiliary lock in the hole;

a plurality of lock tongues, the lock tongues are provided with rotating shaft connection holes, and the rotating shaft connecting holes are connected with the rotating shafts;

A slider, the slider includes a front limiting surface and a rear limiting surface parallel to each other, the slider is placed in the housing, and is located between the main lock cylinder and the auxiliary lock cylinder, the The front limiting surface cooperates with the main lock cylinder, and the rear limiting surface cooperates with several auxiliary lock cylinders.

In a preferred embodiment of the present invention, the front limiting surface and the rear limiting surface of the slider which are parallel to each other are connected through the bottom surface of the slider, and the bottom surface of the slider is matched with the housing, The slider is pressed by the slider limiting plate.

In a preferred embodiment of the present invention, the number of the auxiliary lock cylinder is the same as that of the auxiliary lock holes, and the number is greater than or equal to two.

The beneficial effect of the present invention is that: the key expander of the present invention adopts a purely mechanical design, has a high safety factor, and can satisfy the interlocking of multiple locks at the same time.

Description of drawings

Fig. 1 is the general assembly drawing of the key extender of the present invention.

Fig. 2 is a schematic diagram of the housing of the key extender of the present invention.

Fig. 3 is a schematic diagram of a slider of the key extender of the present invention.

Fig. 4 is a schematic diagram of the lock tongue of the key extender of the present invention.

Fig. 5 is a working principle diagram of the key extender of the present invention.

The marks of each part in the drawings are as follows: 1. Housing; 2. Lock cylinder; 3. Lock bolt; 4. Slider; 5. Fixing plate; 6. Fixing hole; 7. Main lock hole; 8. Auxiliary lock hole ; 9, slider limiting plate; 10, rotating shaft; 11, connecting hole of rotating shaft; 12, front limiting surface; 13, rear limiting surface; 14, slider bottom surface.

detailed description

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Referring to Fig. 1 to Fig. 5, the embodiment of the present invention includes: a key extender, including:

A housing 1, the housing 1 is rectangular, a pair of opposite sides of the housing 1 is provided with a fixing plate 5 outward, the fixing plate 5 is provided with a fixing hole 6, and the fixing plate 5 passes through the The fixing hole 6 fixes the casing 1 on the door.

A main lock hole 7 is provided in the housing 1 close to the fixed plate 5, and a number of secondary lock holes 8 arranged parallel to the fixed plate 5 are arranged on the side opposite to the main lock hole 7. The main lock hole 7 and the auxiliary lock hole 8 are used for placing the main lock and the auxiliary lock.

The center of the opposite long side of the housing 1 is provided with a slider limit plate 9 inwardly, and the slider limit plate 9 is used to limit the horizontal plane of the slider 4 so that it can only move on the vertical plane. Sliding, the slider limit plate 9 has played the function of the lock cover, but the material required to make is greatly reduced, more material is saved, and repair and replacement are more convenient.

Several lock cores 2, the lock core is provided with a rotating shaft 10, the lock core 2 includes a main lock core and a secondary lock core, and the main lock core and the secondary lock core are installed in the main lock hole 7 and the secondary lock core respectively. In the auxiliary lock hole 8, the number of the auxiliary lock cylinder is the same as that of the auxiliary lock hole 8, and the number is greater than or equal to 2, which greatly increases its versatility.

A plurality of deadbolts 3, the deadbolt 3 is provided with a rotating shaft connecting hole 11, the rotating shaft connecting hole 11 is connected with the rotating shaft 10, and the rotating shaft connecting hole 11 is matched with the rotating shaft 10 to make it rotate Can promote the sliding back and forth of described slide block 4 during.

A slider 4, the slider 4 includes a front limiting surface 12 and a rear limiting surface 13 that are parallel to each other, and the front limiting surface 12 and the rear limiting surface 13 of the slider 4 that are parallel to each other pass through The bottom surface 14 of the slider is connected, the slider 4 is placed in the housing 1, and is located between the main lock cylinder and the auxiliary lock cylinder, the bottom surface 14 of the slider is in contact with the housing 1 Cooperate, the front limiting surface 12 is matched with the main lock cylinder, and the rear limiting surface 13 is matched with several auxiliary lock cylinders.

The working principle of the key extender of the present invention will be introduced in detail below.

The lock core 2 is respectively installed in the main lock hole 7 and the auxiliary lock hole 8 on the housing 1, and the slider 4 is inserted between the bottom of the housing 1 and the slider limit plate 9, so that the bottom surface of the slider 4 is in line with the The housing 1 is in contact, the front limiting surface 12 is facing the main lock hole 7, the rear limiting surface 13 is facing the auxiliary locking hole 8, the front limiting surface 12 and the rear limiting surface 13 are connected through the bottom surface 14 of the slider, and the slider limit The position plate 9 limits the horizontal plane of the slider 4 so that it can only slide on the vertical plane, cooperates with the connecting hole 11 of the rotating shaft through the rotating shaft 10, and installs the dead bolt 3 on the main lock cylinder and the auxiliary lock cylinder respectively, and finally passes through the shell The fixing hole 6 on the fixing plate 5 outside the body 1 fixes the whole key extender on the door.

The deadbolt 3 on the main lock can only push the slider 4 to the right when the deadbolt 3 on the auxiliary lock is all retracted, that is, only when the auxiliary lock doors are all locked (equivalent to a series state), The key on the door is inserted into the key box and rotated 90 degrees clockwise (the key is fixed on the lock and cannot be pulled out), retracting the lock 3 on the main lock, and the key of the main lock can be rotated 90 degrees left (the key can be pulled out) , pull out the key to open the program lock of the isolating switch, while turning left, push the slider 4 to the right, close to the 3 sides of the deadbolt of the secondary lock, do not let their keys turn left and pull out the key, the door will not be opened, guarantee Absolute safety for operators. In the same way, if you need "one control and multiple", you only need to lengthen the slider 4 and add secondary locks.

Compared with the prior art, the key expander of the present invention adopts a purely mechanical design, has a high safety factor, and can satisfy the interlocking of multiple locks at the same time.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, are all included in the scope of patent protection of the present invention in the same way.

Claims (3)

1. a key expander, it is characterised in that including:

One housing, described housing is rectangle, the opposite side that described housing is relative is outwards provided with fixed plate, described fixed plate is provided with fixing hole, at described fixed plate, it is provided with a main lockhole in described housing, relative with described main lockhole while being provided with and some being arranged in the secondary lockhole parallel with described fixed plate, the center, long limit that described housing is relative is inwardly provided with slide block limiting plate；

Some lock cores, described lock core is provided with rotating shaft, and described lock core includes that main lock core and auxiliary lock core, described main lock core and described auxiliary lock core are respectively arranged in described main lockhole and described secondary lockhole；

Some dead bolts, described dead bolt is provided with rotating shaft connecting hole, and described rotating shaft connecting hole is connected with described rotating shaft；

One slide block, described slide block includes the front limit face that is parallel to each other and rear confined planes, and described slide block is placed in described housing, and between described main lock core and described auxiliary lock core, matching with described main lock core in described front limit face, described rear confined planes matches with some described auxiliary lock cores.

Key expander the most according to claim 1, it is characterized in that: the described front limit face that described slide block is parallel to each other is connected by slide block bottom surface with described rear confined planes, matching with described housing in described slide block bottom surface, described slide block is pushed down by described slide block limiting plate.

Key expander the most according to claim 1, it is characterised in that: described auxiliary lock core is identical with the quantity of described secondary lockhole, and quantity is more than or equal to 2.