CN109184335B - Lock and key thereof - Google Patents

Abstract

The invention provides a lock and a key thereof. The lock comprises a lock body, a primary lock cylinder, a secondary lock cylinder, an output lock cylinder and a clutch mechanism, wherein the primary lock cylinder, the secondary lock cylinder, the output lock cylinder and the clutch mechanism are arranged on the lock body; the primary lock cylinder is provided with a primary key hole, the secondary lock cylinder is provided with a secondary key hole, and the primary key hole and the secondary key hole are in different forms; the primary lock cylinder, the secondary lock cylinder and the output lock cylinder can rotate relative to the lock body; the clutch mechanism can control the secondary lock cylinder and the lock body to form non-rotary connection or control the secondary lock cylinder and the output lock cylinder to form non-rotary connection. The lock has the advantages of complex lock core structure, high reliability and high safety, and can prevent technical unlocking and violent unlocking. The key matched with the lock has a complex structure and is not easy to imitate.

Description

Lock and key thereof

Technical Field

The invention relates to the field of opening and closing locking devices, in particular to a lock and a key thereof.

Background

The lock is applied to an openable and closable object, is limited by aligning the opening and closing state, needs to be unlocked by a key corresponding to the lock to realize the opening, and is a device with a safety guarantee function.

The mechanical lock core in the lockset has the advantage of reliable work, the typical structure is a yeru lock of the yeru invention, and various forms are derived afterwards, and most of the mechanical lock core is still the locking and unlocking principle of the yeru lock. The Yes spring lock is characterized in that an inner lock cylinder with a key hole is arranged in a round hole-shaped lock cylinder hole of a lock cylinder body, a through key hole and a spring hole on the outer side surface of the inner lock cylinder are arranged in the inner lock cylinder, spring holes corresponding to the spring holes of the inner lock cylinder one by one are arranged in the lock cylinder body, two cylindrical springs are arranged in each butt joint spring hole of the inner lock cylinder and the lock cylinder body, a spring acting on the spring is arranged in the spring hole of the outer lock cylinder, when a matched key is inserted into the key hole of the inner lock cylinder, teeth with different heights are arranged on the key to just drive the outer ends of the springs in the key hole to the hole surface where the inner lock cylinder and the lock cylinder are in butt joint, so that the inner lock cylinder can rotate relative to the lock cylinder body to drive a lockset to unlock; when the matched key is withdrawn from the inner lock cylinder or an illegal key is inserted into the key hole of the inner lock cylinder, the joint surfaces of two pins in each pin hole cannot be exactly aligned with the joint surfaces of the lock cylinder body and the inner lock cylinder due to the action of the spring in the pin hole, so that at least one pin is blocked in the joint surface to lock the lock cylinder body and the inner lock cylinder.

The lock with the existing structure has the advantages that the key hole is single in structure in the extending direction, the arrangement mode of the unlocking plate is simple, the structure is used for unlocking illegally or technically, the theft prevention performance is poor, the unlocking can be realized only by a few seconds by using a technical unlocking tool such as an unlocking gun or a universal key, the illegal key with high strength can be pried by violent rotation, and the theft prevention performance is not strong.

Disclosure of Invention

Accordingly, the present invention is directed to a lock and a key thereof, which overcome the shortcomings of the prior art.

The invention provides the following technical scheme:

a lock comprises a lock body, a primary lock cylinder, a secondary lock cylinder, an output lock cylinder and a clutch mechanism, wherein the primary lock cylinder, the secondary lock cylinder, the output lock cylinder and the clutch mechanism are arranged on the lock body;

the primary lock cylinder is provided with a primary key hole, the secondary lock cylinder is provided with a secondary key hole, and the primary key hole and the secondary key hole are in different forms;

the primary lock cylinder, the secondary lock cylinder and the output lock cylinder can rotate relative to the lock body;

the clutch mechanism can control the secondary lock cylinder and the lock body to form non-rotary connection or control the secondary lock cylinder and the output lock cylinder to form non-rotary connection.

As a further alternative scheme of the lock, the primary lock core includes a primary unlocking plate and a primary elastic member, the plurality of primary elastic members are stacked along the extending direction of the primary keyhole, the primary elastic member enables the primary unlocking plate to shrink relative to the wall of the primary keyhole, and the primary unlocking plate can be abutted to the lock body;

the secondary lock core comprises a secondary unlocking plate and a secondary elastic piece, a plurality of secondary elastic pieces are stacked along the extending direction of the secondary key hole, the secondary elastic piece enables the secondary unlocking plate to shrink relative to the hole wall of the secondary key hole, and the secondary unlocking plate can be abutted to the lock body.

As a further alternative scheme to the lock, the primary keyhole is an L-shaped hole, the primary unlocking piece comprises a primary transverse unlocking piece and a primary vertical unlocking piece, the primary elastic piece comprises a primary transverse elastic piece and a primary vertical elastic piece, the primary transverse elastic piece enables the primary transverse unlocking piece to transversely shrink relative to the hole wall of the primary keyhole, and the primary vertical elastic piece enables the primary vertical unlocking piece to vertically shrink relative to the hole wall of the primary keyhole.

As a further alternative to the lock, the secondary keyhole is a straight hole, and the projection of the straight hole falls into the projection of the transverse hole of the L-shaped hole.

As a further alternative to the lock described above, the clutch mechanism includes a clutch member, and a clutch elastic member, the clutch member being floatable between the secondary lock cylinder and the lock body by the elastic member;

and the movement of the secondary unlocking piece can enable the clutch piece to connect the secondary lock cylinder and the output lock cylinder in a non-rotary way or connect the secondary lock cylinder and the lock body in a non-rotary way.

As a further alternative scheme of the lock, the output lock core is provided with a first clutch groove, and the lock body is provided with a second clutch groove;

when a plurality of stacked secondary unlocking plates form a decoding groove, the clutch elastic piece drives the clutch piece to be embedded in the decoding groove and simultaneously embedded in the first clutch groove;

when a plurality of stacked secondary unlocking plates are disordered, the secondary unlocking plates push the clutch piece to be separated from the first clutch groove and are engaged with the second clutch groove.

As a further alternative scheme of the lock, a lock body blade and a lock body elastic member are arranged in the lock body, the lock body blade is floatingly connected to the lock body through the lock body elastic member, and the lock body blade is stacked and arranged and corresponds to the primary unlocking plate which is stacked and arranged;

the clutch mechanism comprises a locking piece, the locking piece is arranged between the clutch elastic piece and the clutch piece, and the locking piece drives the lock body blade to move towards the primary unlocking piece when the clutch piece enables the secondary lock core and the output lock core to form non-rotary connection.

As a further alternative scheme of the lock, a locking groove is formed in the lock body, and when the primary unlocking piece is embedded in the locking groove, the primary lock core and the lock body form non-rotary connection.

As a further alternative scheme of the lock, the primary lock cylinder and the secondary lock cylinder are arranged on the same lock barrel, or the lock barrel of the primary lock cylinder is sleeved outside the lock barrel of the secondary lock cylinder, and the clutch mechanism enables the primary lock cylinder and the secondary lock cylinder to form non-rotary connection with the lock body.

As a further extension of the above-described technical solution: the invention also provides a key for unlocking the lock, wherein the key comprises a primary key section and a secondary key section which are connected with each other;

when the first-stage key section is inserted into the first-stage key hole and the second-stage key section is inserted into the second-stage key hole, the clutch mechanism enables the second-stage lock cylinder to form non-rotary connection with the output lock cylinder, and the key can drive the output lock cylinder to rotate.

The lock and the key thereof have the following advantages:

the lock comprises a lock body, a primary lock cylinder, a secondary lock cylinder, an output lock cylinder and a clutch mechanism, wherein the primary lock cylinder, the secondary lock cylinder, the output lock cylinder and the clutch mechanism are arranged on the lock body; the primary lock cylinder is provided with a primary key hole, the secondary lock cylinder is provided with a secondary key hole, and the primary key hole and the secondary key hole are in different forms; the primary lock cylinder, the secondary lock cylinder and the output lock cylinder can rotate relative to the lock body; the clutch mechanism can control the secondary lock cylinder and the lock body to form non-rotary connection or control the secondary lock cylinder and the output lock cylinder to form non-rotary connection.

The different forms of the primary lock core and the secondary lock core of the lock can verify the key twice, the complexity of the key hole is improved in the radial direction and the axial extension direction of the key hole, when the technology is unlocked, the tool is difficult to enter, and when the technology is unlocked, the difficulty of three-time transmission of the primary lock core, the secondary lock core and the output lock core which are required to be linked is high, the difficulty of the technology unlocking is multiplied, and the technology unlocking is almost impossible. Meanwhile, the secondary lock cylinder is idle, even if the primary lock cylinder is opened violently, the violent opening of the secondary lock cylinder is very difficult, the difficulty of the anti-theft opening of the lock is further improved, and the lock is complex in lock cylinder structure, high in reliability and high in safety, and has technical unlocking prevention and violent unlocking prevention.

The invention also provides a key matched with the lock, which has a complex structure and is not easy to imitate.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an isometric view of the overall structure of a lock provided in embodiment 1 of the present invention;

FIG. 2 is a front view showing the overall structure of the lock according to embodiment 1 of the present invention;

FIG. 3 is a right side view showing the overall structure of the lock according to embodiment 1 of the present invention;

FIG. 4 is a schematic view of the lock body of FIG. 3 with the lock body removed;

FIG. 5 is a schematic view of the cross-sectional structure of FIG. 2;

FIG. 6 is a schematic diagram of the cross-sectional structure B-B of FIG. 4;

FIG. 7 is a schematic view showing an exploded structure of a lock according to embodiment 1 of the present invention;

fig. 8 shows an isometric view of a key provided in embodiment 2 of the present invention.

Icon:

1-a lock body; 11-a second clutch groove; 12-lock body blades; 13-a lock body elastic member; 14-a blade seat; 15-a locking groove;

2-a primary lock cylinder; 21-a first-level keyhole; 22-a first-order transverse unlocking piece; 23-first-level vertical unlocking plates; 24-primary transverse elastic members; 25-primary vertical elastic elements;

3-a secondary lock cylinder; 31-a secondary keyhole; 32-a secondary unlocking piece; 321-a decoding slot; 33-two-stage elastic member

4-outputting a lock cylinder; 41-a first clutch groove;

5-a clutch mechanism; 51-clutch; 511-a first clutch; 512-a second clutch portion; 52-clutch elastic member; 53-locking member; 54-locking lever;

6-key.

Detailed Description

In order to facilitate an understanding of the present application, the lock and its key will be described more fully below with reference to the accompanying drawings. A preferred embodiment of a lock and its key is shown in the drawings. However, the lock and its key may be implemented in many different forms and are not limited to the embodiments described herein. Rather, the purpose of these embodiments is to provide a more thorough and complete disclosure of the lock and its key.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of locks and their keys is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1 to 6, the present embodiment provides a lock, which includes a lock body 1, a primary lock cylinder 2, a secondary lock cylinder 3, an output lock cylinder 4 and a clutch mechanism 5. The primary lock cylinder 2 is provided with a primary key hole 21, the secondary lock cylinder 3 is provided with a secondary key hole 31, and the primary key hole 21 and the secondary key hole 31 are in different forms; the primary lock cylinder 2, the secondary lock cylinder 3 and the output lock cylinder 4 can rotate relative to the lock body 1. The clutch mechanism 5 can control the secondary lock cylinder 3 and the lock body 1 to form non-rotary connection or control the secondary lock cylinder 3 and the output lock cylinder 4 to form non-rotary connection.

In the above-mentioned, in the normal state or in the locked state, the clutch mechanism 5 makes the secondary lock cylinder 3 and the lock body 1 in the engaged state, so as to form non-rotary connection, that is, the secondary lock cylinder 3 is fixed relative to the rotation of the lock body 1, at this time, the clutch mechanism 5 makes the secondary lock cylinder 3 and the output lock cylinder 4 in the disengaged state, and the secondary lock cylinder 3 and the output lock cylinder 4 can rotate relatively, that is, the secondary lock cylinder 3 idles; when a key 6 (mentioned below) is inserted or in an unlocking state, the clutch mechanism 5 enables the secondary lock cylinder 3 and the output lock cylinder 4 to be in a combined state, so that non-rotary connection is formed, namely, the secondary lock cylinder 3 can drive the output lock cylinder 4 to rotate, at the moment, the clutch mechanism 5 enables the secondary lock cylinder 3 and the lock body 1 to be in a separated state, the secondary lock cylinder 3 and the lock body 1 can rotate relatively, and accordingly the output lock cylinder 4 can be driven to rotate through the secondary lock cylinder 3, and unlocking of the lock is completed.

The different forms of the primary lock cylinder 2 and the secondary lock cylinder 3 can verify the key 6 twice, the complexity of the key hole is improved in the radial direction and the axial extension direction of the key hole, when the technology is unlocked, the tool is difficult to enter, and when the technology is unlocked, the difficulty of three-time transmission of the primary lock cylinder 2, the secondary lock cylinder 3 and the output lock cylinder 4 is required to be linked, the difficulty of the technology unlocking is multiplied, and the technology unlocking is almost impossible. Meanwhile, the secondary lock cylinder 3 is idle, even if the primary lock cylinder 2 is opened by violence, the violence opening of the secondary lock cylinder 3 is very difficult, and the difficulty of anti-theft opening of the lock is further improved.

The lock body 1 is a lock shell and is used for installing and bearing other parts of the lock, and the primary lock cylinder 2, the secondary lock cylinder 3, the clutch mechanism 5 and the output lock cylinder 4 are arranged on the lock body 1 or in the lock body 1. The two ends of the lock body 1 are opened, and the primary lock cylinder 2, the secondary lock cylinder 3 and the output lock cylinder 4 are coaxially arranged in the lock body 1 in sequence. The primary keyhole 21 of the primary lock cylinder 2 is exposed from the opening surface of the lock body 1, and the output lock cylinder 4 extends from the other opening of the lock body 1 and is used for locking or unlocking the linkage locking mechanism. The clutch mechanism 5 is arranged on the secondary lock cylinder 3 and is used for enabling the secondary lock cylinder 3 to be connected with the output lock cylinder 4 or enabling the secondary lock cylinder 3 to be connected with the lock body 1, the lock is in a locking state when the secondary lock cylinder 3 is connected with the lock body 1, and the lock is in an unlocking state when the secondary lock cylinder 3 is connected with the output lock cylinder 4.

As shown in fig. 7, in this embodiment, the primary lock core 2 includes a primary unlocking plate and a primary elastic member, where a plurality of primary elastic members are stacked along an extending direction of the primary keyhole 21, and the primary elastic member enables the primary unlocking plate to shrink relative to a wall of the primary keyhole 21, and the primary unlocking plate can be abutted with the lock body 1. The secondary lock cylinder 3 comprises a secondary unlocking piece 32 and a secondary elastic piece 33, the plurality of secondary elastic pieces 33 are stacked along the extending direction of the secondary key hole 31, the secondary elastic piece 33 enables the secondary unlocking piece 32 to shrink relative to the hole wall of the secondary key hole 31, and the secondary unlocking piece 32 can be abutted with the lock body 1.

The primary unlocking plate is sheet-shaped, is stacked along the extending direction of the primary keyhole 21, forms protruding features on the wall of the primary keyhole 21 by pushing the primary unlocking plate away from the lock body 1 through the primary elastic piece, and can push the primary unlocking plate to move towards the lock body 1 when a key is inserted, so as to compress the primary elastic piece.

The first-stage decoding sheet can be sheet bodies with the same shape and thickness, and also can be sheet bodies with different shapes and thicknesses, and in a normal state, the first-stage decoding sheet is in a messy code state through the driving of the first-stage elastic piece. When the key is inserted, the primary unlocking piece is abutted with the lock body 1 or is won, so that the key cannot be inserted, and when the key is small in size and the structural characteristics are not matched with the primary key hole 21, the primary unlocking piece cannot be effectively decoded.

Similarly, the secondary unlocking piece 32 may be a sheet body with the same shape and thickness, or a sheet body with a different shape and thickness, and in a normal state, the secondary unlocking piece 32 is in a disorder state by driving the secondary elastic member 33. When the key is inserted, the secondary unlocking plate 32 is abutted with the lock body 1 or win-win, the key cannot be inserted, when the size of the key is smaller, the secondary unlocking plate 32 cannot be effectively decoded when the structural characteristics are not matched with the secondary key hole 31, the secondary unlocking plate 32 cannot be decoded, the clutch mechanism 5 cannot be driven to act, and the secondary lock cylinder 3 and the output lock cylinder 4 form non-rotary connection, namely unlocking cannot be realized.

Above-mentioned, adopt the setting of stacked unlocking piece, can make the unblock structure in the keyhole more complicated, can obtain high key secret volume through adopting the unlocking piece of thickness weak point, can promote the complexity of keyhole structure through adopting the unlocking piece that thickness is different, the structure is different, the arrangement mode is different, the range interval is different, and then promotes the unblock complexity.

The shapes of the primary keyhole 21 and the secondary keyhole 31 are different, the primary keyhole 21 and the secondary keyhole 31 can be cross-shaped, flower-shaped, special-shaped, straight-shaped and other keyhole, and the unlocking plates can be distributed in a plurality of phases in the direction/radial direction of the cross section of the keyhole according to the shape of the keyhole, namely, a plurality of groups of stacked unlocking plates are distributed in the circumferential direction of the keyhole.

In this embodiment, the primary keyhole 21 is an L-shaped hole, the primary unlocking piece comprises a primary transverse unlocking piece 22 and a primary vertical unlocking piece 23, the primary elastic piece comprises a primary transverse elastic piece 24 and a primary vertical elastic piece 25, and the primary transverse elastic piece 24 enables the primary transverse unlocking piece 22 to transversely retract relative to the hole wall of the primary keyhole 21. The primary vertical elastic piece 25 enables the primary vertical unlocking piece 23 to vertically retract relative to the hole wall of the primary keyhole 21.

The primary keyhole 21 is an L-shaped hole, i.e. the cross section is L-shaped, and comprises a transverse bar hole and a vertical bar hole which are mutually perpendicular and are communicated at the end parts. The primary transverse unlocking piece 22 and the primary vertical unlocking piece 23 are two unlocking pieces with vertical phases arranged in the primary keyhole 21, the primary transverse unlocking piece 22 transversely contracts in the transverse bar-shaped hole, and the primary vertical unlocking piece 23 vertically contracts in the vertical bar-shaped hole, so that double encryption is formed on the primary keyhole 21.

Specifically, the unlocking surface of the primary transverse unlocking piece 22 is arranged towards the transverse bar-shaped hole of the primary keyhole 21, and is in a ladder shape, and the adjacent primary transverse unlocking pieces 22 are reversely stacked, so that two adjacent primary transverse unlocking pieces 22 are arranged in a ladder shape in the primary keyhole 21, and the encryption of the primary lock core 2 is further increased on the premise of selecting the primary transverse unlocking pieces 22 with the same shape.

The primary lock cylinder 2 comprises a primary lock cylinder 20, a primary transverse unlocking plate 22 and a primary vertical unlocking plate 23 are arranged in the primary lock cylinder 20, a primary transverse elastic piece 24 is arranged between the primary lock cylinder 20 and the primary transverse unlocking plate 22, and a primary vertical elastic piece 25 is arranged between the primary lock cylinder 20 and the primary vertical unlocking plate 23. The primary key hole 21 is arranged on the primary lock cylinder 20, and the primary lock cylinder 20 can rotate relative to the lock body 1.

The primary lock cylinder 20 is provided with a mounting position for the primary transverse unlocking piece 22, so that after the two primary transverse unlocking pieces 22 are stacked, the two primary transverse unlocking pieces 22 which are reversely mounted are arranged at intervals, thereby providing a mounting position for the primary transverse elastic piece 24.

The primary transverse elastic member 24 is stretched and contracted in the transverse direction, and is disposed between the primary transverse unlocking plate 22 and the primary lock cylinder 20, and is used for driving the primary transverse unlocking plate 22 to transversely shrink.

In this embodiment, the unlocking surface of the primary vertical unlocking plate 23 is set towards the vertical bar-shaped hole of the primary keyhole 21, and is in a hook shape, the adjacent primary vertical unlocking plates 23 are stacked reversely, the hooks of the stacked primary vertical unlocking plates 23 extend into the primary keyhole 21 at intervals, that is, the two primary vertical unlocking plates 23 which are set reversely are used as a group, and the hooks of one primary vertical unlocking plate 23 in the group of vertical unlocking plates extend into the primary keyhole 21. It can be appreciated that the same structure of the primary vertical unlocking piece 23 is adopted, the primary vertical elastic piece 25 can be installed forward and backward through the primary vertical unlocking piece 23 to provide an installation gap, and meanwhile, the unlocking structure in the primary keyhole 21 can be changed more variously through the different-direction arrangement of the same primary vertical unlocking piece 23.

The primary lock cylinder 20 is provided with a mounting position of the primary vertical unlocking piece 23, and after the two primary vertical unlocking pieces 23 are stacked, the two reverse mounting primary vertical unlocking pieces 23 are arranged at intervals, so that a mounting position is provided for the primary vertical elastic piece 25.

The primary vertical elastic piece 25 stretches vertically and is arranged between the primary vertical unlocking piece 23 and the primary lock cylinder 20 and is used for driving the primary vertical unlocking piece 23 to shrink vertically, in the embodiment, the primary vertical elastic piece 25 is a spring, and in other embodiments, the primary vertical elastic piece 25 is an elastic piece with single-direction stretching characteristics such as an elastic sheet or an elastic column.

In this embodiment, the secondary keyhole 31 is a straight-line shaped hole, and the projection of the straight-line shaped hole falls into the projection of the transverse hole of the L-shaped hole, that is, the straight-line shaped hole is directly communicated with the transverse bar-shaped hole of the L-shaped hole, and the cross-sectional area of the straight-line shaped hole is not larger than the cross-sectional area of the transverse bar-shaped hole.

Specifically, the unlocking surface of the secondary unlocking plate 32 is arranged towards the secondary keyhole 31, the adjacent secondary unlocking plates 32 are stacked reversely, the unlocking surface of the secondary unlocking plate 32 is formed by grooves on the secondary unlocking plate 32, the length of the groove is larger than that of the linear hole, and grooves of the secondary unlocking plates 32 which are stacked in a multi-stack manner are penetrated when the key 6 is inserted. In other embodiments, the unlocking surface of the secondary unlocking plate 32 may have other shapes.

The secondary lock cylinder 3 comprises a secondary 30 lock cylinder, a secondary unlocking plate 32 is arranged in the secondary 30 lock cylinder, a secondary elastic piece 33 is arranged between the secondary 30 lock cylinder and the secondary unlocking plate 32, a secondary key hole 31 is arranged on the secondary lock cylinder 30, and the secondary lock cylinder 30 can rotate relative to the lock body 1.

The secondary lock cylinder 30 is provided with mounting locations for the secondary unlocking plates 32 such that after stacking of the two secondary unlocking plates 32, the two reversely mounted secondary unlocking plates 32 are arranged at intervals to provide mounting locations for the secondary elastic members 33.

The secondary elastic member 33 is vertically telescopic, and is disposed between the secondary unlocking plate 32 and the secondary lock cylinder 30, and is used for driving the secondary unlocking plate 32 to vertically retract, in this embodiment, the secondary elastic member 33 is a spring, and in other embodiments, the secondary elastic member 33 is an elastic member having a single-direction telescopic characteristic, such as an elastic sheet or an elastic column.

In the present embodiment, the clutch mechanism 5 includes a clutch member 51 and a clutch elastic member 52. The clutch member 51 is floatable between the secondary lock cylinder 3 and the lock body 1 by a clutch elastic member 52. The movement of the secondary unlocking piece 32 enables the clutch piece 51 to connect the secondary lock cylinder 3 and the output lock cylinder 4 non-rotatably or connect the secondary lock cylinder 3 with the lock body 1 non-rotatably.

The movement of the clutch member 51 is controlled by the movement of the secondary unlocking plate 32 and the clutch elastic member 52, when the secondary unlocking plate 32 moves in place to decode, the clutch elastic member 52 drives the clutch member 51 to move, the clutch member 51 fixes the rotation of the secondary lock cylinder 3 and the output lock cylinder 4, and the rotation fixation between the secondary lock cylinder 3 and the lock body 1 is released, so that the secondary lock cylinder 3 and the lock body 1 can rotate together; when the secondary unlocking piece 32 is in disorder, the secondary unlocking piece 32 pushes the clutch piece 51 to move, the clutch elastic piece 52 is compressed, and the clutch piece 51 enables rotation fixation of the secondary lock cylinder 3 and the output lock cylinder 4 to be released, and rotation fixation of the secondary lock cylinder 3 and the lock body 1 is achieved.

Further, the output lock cylinder 4 is provided with a first clutch groove 41, and the lock body 1 is provided with a second clutch groove 11. When the stacked plurality of secondary unlocking plates 32 form the decoding groove 321, the clutch elastic member 52 drives the clutch member 51 to be inserted into the decoding groove 321 while being inserted into the first clutch groove 41. When the stacked plurality of secondary unlocking pieces 32 are scrambled, the secondary unlocking pieces 32 push the clutch piece 51 to be separated from the first clutch groove 41 and engaged with the second clutch groove 11.

The movement of the secondary unlocking piece 32 is transverse movement, the secondary elastic piece 33 stretches and contracts transversely, a groove is formed in one side of the secondary unlocking piece 32 in the vertical direction, the secondary unlocking piece is an unlocking surface, and a groove is formed in the other side of the secondary unlocking piece in the vertical direction. Normally, the grooves on the second unlocking plate 32 are not aligned and are in a messy code shape, when a key matched with the lock is inserted, the key pushes the second unlocking plate 32 to move, so that the second unlocking plate 32 decodes, the grooves on the second unlocking plate 32 are aligned and decoded, and decoding grooves 321 distributed along the extending direction of the second key hole are formed.

In this embodiment, the groove on the secondary unlocking plate 32 is a V-shaped groove, the decoding groove 321 is a V-shaped groove, and the clutch member 51 has a structure embedded in the decoding groove 321, i.e. has a matching embedded structure of the decoding groove 321.

The second-stage unlocking piece 32 can move so that the clutch piece 51 moves along the radial direction of the second-stage lock cylinder 3, namely along the lock cylinder, the clutch piece 51 is embedded in the decoding groove 321 and is also embedded in the first clutch groove, the first clutch groove and the decoding groove 321 are distributed along the axial direction of the lock cylinder, the clutch piece 51 is embedded in the second clutch groove when being separated from the decoding groove 321, the second clutch groove and the decoding groove 321 are distributed along the radial direction of the lock cylinder, and the second clutch groove is arranged on the lock body 1 corresponding to the position of the decoding groove 321.

The clutch elastic member 52 pushes the clutch member 51 toward the secondary lock cylinder 3, and in this embodiment, the clutch elastic member 52 is a spring, and in other embodiments, the clutch elastic member 52 is an elastic member having a single-direction expansion characteristic, such as a spring plate or an elastic column.

The lock body 1 is internally provided with a lock body blade 12 and a lock body elastic piece 13, the lock body blade 12 is floatingly connected to the lock body 1 through the lock body elastic piece 13, and the lock body blade 12 is stacked and corresponds to the primary unlocking piece which is stacked. The clutch mechanism 5 comprises a locking piece 53, the locking piece 53 is arranged between the clutch elastic piece 52 and the clutch piece 51, and when the clutch piece 51 enables the secondary lock cylinder 3 and the output lock cylinder 4 to form non-rotary connection, the locking piece 53 drives the lock body blade 12 to move towards the primary unlocking piece.

Further, the lock body 1 is also provided with a blade seat 14, the lock body blade 12 is installed in the blade seat 14, a lock body elastic piece 13 is arranged between the blade seat 14 and the lock body blade 12, the lock body blade 12 and the primary vertical unlocking pieces 23 which are stacked are arranged in a one-to-one correspondence manner in the vertical direction, and the lock body elastic piece 13 pushes the lock body blade 12 towards the primary vertical unlocking pieces 23.

Normally, the second level unlocking plate 32 pushes the clutch member 51 vertically, the clutch member 51 pushes the locking member 53 to compress the clutch elastic member 52, when the second level unlocking plate 32 forms the decoding groove 321, the clutch elastic member 52 pushes the clutch member 51 to move vertically downwards, meanwhile pushes the locking member 53 to move downwards, the locking member 53 is provided with a locking rod 54, the locking rod 54 is embedded with each lock body blade 12, and then the locking member 53 enables the movement of each lock body blade 12 to be fixed, so that rigid support is provided for the lock body blade 12, and the positions of the lock body blades 12 are fixed when the first-level lock cylinder 2 and the second-level lock cylinder 3 rotate relative to the lock body 1.

The lock body 1 is provided with a locking groove 15, and when the primary unlocking piece is embedded in the locking groove 15, the primary lock cylinder 2 and the lock body 1 form non-rotary connection.

Further, the lock body 1 is provided with a transverse locking groove 15 and a vertical locking groove 15, two transverse sides of the lock body 1 are provided with the transverse locking grooves 15, and the bottom of the lock body 1 is provided with the vertical locking grooves 15. If the inserted key 6 is not the key 6 corresponding to the lock, the lock cylinder rotates too much upon violent turning of the lock cylinder, so that the primary transverse unlocking plate 22 or primary will always unlock the plate or embed in the locking groove 15, seizing the lock cylinder to a point of scrapping.

In this embodiment, the primary lock cylinder 20 is sleeved outside the secondary lock cylinder 30, and the clutch member 51 makes the secondary lock cylinder 30 and the primary lock cylinder 20 form a non-rotary connection. The primary lock cylinder 2 and the secondary lock cylinder 3 are arranged on the primary lock cylinder 30, the clutch mechanism 5 enables the primary lock cylinder 30 and the lock body 1 to form non-rotary connection, and idle running between the secondary lock cylinder 3 and the output lock cylinder 4 can effectively prevent the primary lock cylinder 2 from being forcibly rotated to unlock.

Meanwhile, the clutch member 51 includes a first clutch portion 511 and a second clutch portion 512, which are a separate structure, the first clutch portion 511 is configured to be engaged with the first clutch groove, and the second clutch portion 512 is configured to be engaged with the second clutch groove. When the second cylinder is rotated, the first clutch portion 511 is always engaged with the lock cylinder and the output cylinder 4, and is separated from the second clutch portion 512 along with the rotation of the second cylinder 3 and the output cylinder 4, and when the first cylinder 2 and the second cylinder 3 are rotated together, the first clutch portion 511 and the second clutch portion 512 can be rotated together with the first cylinder 20, and when the second clutch portion 512 is rotated, the second clutch portion is separated from the locking member 53.

The output lock cylinder 4 is in a shaft shape and is provided with a clamping groove with a locking mechanism, and the clamping groove enables the output lock cylinder 4 to act in linkage with the locking mechanism when rotating, so that locking or unlocking is realized. The output lock cylinder 4 is rotatably connected to the primary lock cylinder 20 through a snap spring, and when the clutch mechanism 5 engages the secondary lock cylinder 3 with the output lock cylinder 4, the output lock cylinder 4 can rotate together with the primary lock cylinder 20.

Example 2

As shown in fig. 8, the present embodiment provides a key 6 for unlocking the lock in embodiment 1, the key 6 including a primary key section 61 and a secondary key section 62 connected to each other. When the primary key section 61 is inserted into the primary key hole 21 and the secondary key section 62 is inserted into the secondary key hole 31, the clutch mechanism 5 enables the secondary lock cylinder 3 and the output lock cylinder 4 to form non-rotary connection, and the key 6 can drive the output lock cylinder 4 to rotate.

The second-stage key section 62 is inserted into the second-stage key hole 31 through the first-stage key section 61, the first-stage key section 61 is inserted into the first-stage key hole 21, the second-stage key section 62 decodes the second-stage unlocking piece 32 to form the decoding slot 321, and the clutch piece 51 is embedded into the decoding slot 321, so as to realize non-rotary connection between the second lock cylinder and the output lock cylinder 4.

In this embodiment, the primary key section 61 is L-shaped and is a right-angle bending plate, and the secondary key section 62 is flat and coplanar with one face of the right-angle bending plate. The primary key section 61 and the secondary key section 62 are of an integrally formed structure.

Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (10)

1. The lock is characterized by comprising a lock body, a primary lock cylinder, a secondary lock cylinder, an output lock cylinder and a clutch mechanism, wherein the primary lock cylinder, the secondary lock cylinder, the output lock cylinder and the clutch mechanism are arranged on the lock body;

the primary lock cylinder is provided with a primary key hole, the secondary lock cylinder is provided with a secondary key hole, and the primary key hole and the secondary key hole are in different forms;

the primary lock cylinder, the secondary lock cylinder and the output lock cylinder can rotate relative to the lock body;

the clutch mechanism can control the secondary lock cylinder and the lock body to form non-rotary connection or control the secondary lock cylinder and the output lock cylinder to form non-rotary connection.

2. The lock according to claim 1, wherein the primary lock cylinder comprises a primary unlocking plate and a primary elastic member, a plurality of primary elastic members are stacked along the extending direction of the primary keyhole, the primary elastic member enables the primary unlocking plate to retract relative to the wall of the primary keyhole, and the primary unlocking plate can be abutted with the lock body;

the secondary lock core comprises a secondary unlocking plate and a secondary elastic piece, a plurality of secondary elastic pieces are stacked along the extending direction of the secondary key hole, the secondary elastic piece enables the secondary unlocking plate to shrink relative to the hole wall of the secondary key hole, and the secondary unlocking plate can be abutted to the lock body.

3. The lock of claim 2, wherein the primary keyhole is an L-shaped hole, the primary unlocking tab comprises a primary transverse unlocking tab and a primary vertical unlocking tab, the primary elastic member comprises a primary transverse elastic member and a primary vertical elastic member, the primary transverse elastic member enables the primary transverse unlocking tab to be laterally retracted relative to a hole wall of the primary keyhole, and the primary vertical elastic member enables the primary vertical unlocking tab to be vertically retracted relative to the hole wall of the primary keyhole.

4. A lock according to claim 3, wherein the secondary keyhole is a straight-shaped hole and the projection of the straight-shaped hole falls into the projection of the transverse hole of the L-shaped hole.

5. The lock of claim 2, wherein the clutch mechanism includes a clutch member, and a clutch spring member by which the clutch member is floatable between the secondary lock cylinder and the lock body;

and the movement of the secondary unlocking piece can enable the clutch piece to connect the secondary lock cylinder and the output lock cylinder in a non-rotary way or connect the secondary lock cylinder and the lock body in a non-rotary way.

6. The lock of claim 5, wherein the output lock cylinder is provided with a first clutch groove, and the lock body is provided with a second clutch groove;

when a plurality of stacked secondary unlocking plates form a decoding groove, the clutch elastic piece drives the clutch piece to be embedded in the decoding groove and simultaneously embedded in the first clutch groove;

when a plurality of stacked secondary unlocking plates are disordered, the secondary unlocking plates push the clutch piece to be separated from the first clutch groove and are engaged with the second clutch groove.

7. The lock according to claim 5, wherein a lock body blade and a lock body elastic member are provided in the lock body, the lock body blade is floatingly connected to the lock body through the lock body elastic member, and the lock body blade is stacked and arranged corresponding to the primary unlocking plate;

the clutch mechanism comprises a locking piece, the locking piece is arranged between the clutch elastic piece and the clutch piece, and the locking piece drives the lock body blade to move towards the primary unlocking piece when the clutch piece enables the secondary lock core and the output lock core to form non-rotary connection.

8. The lock of claim 2, wherein the lock body is provided with a locking groove, and the primary lock cylinder forms a non-rotary connection with the lock body when the primary unlocking piece is embedded in the locking groove.

9. The lock of claim 1, wherein the primary lock cylinder and the secondary lock cylinder are disposed on a same lock barrel, or the lock barrel of the primary lock cylinder is sleeved outside the lock barrel of the secondary lock cylinder, and the clutch mechanism enables the primary lock cylinder and the secondary lock cylinder to form non-rotary connection with the lock body.

10. A key for unlocking a lock according to any one of claims 1-9, said key comprising a primary key section and a secondary key section connected to each other;

when the first-stage key section is inserted into the first-stage key hole and the second-stage key section is inserted into the second-stage key hole, the clutch mechanism enables the second-stage lock cylinder to form non-rotary connection with the output lock cylinder, and the key can drive the output lock cylinder to rotate.