阅读说明：本技术 基于锁心更换的隐藏式锁钩挂锁 (Hidden latch hook padlock based on lock core is changed ) 是由 刘天靠 于 2019-04-04 设计创作，主要内容包括：本发明公开了一种基于锁心更换的隐藏式锁钩挂锁,包括：锁体,其于第一端面的轴向方向凹设有锁槽、承接槽、滑槽及通槽；锁体于第二端面的轴向方向凹设有锁心槽；锁体侧缘于一径向方向设有连通于锁槽及通槽的锁钩槽；锁心设置于锁心槽,锁心末端设有传动部；锁片设置于承接槽,锁片设有连接部及挡片,连接部对应传动接设于传动部,且该挡片受该锁片转动而滑动于滑槽,并于一第一位置时遮蔽于通槽,而于第二位置时非遮蔽于通槽；锁块设置于通槽；锁钩,其配置于锁钩槽内,锁钩设有一对应于通槽及锁块的凹部。本发明可提升本发明整体的安全性,并可降低使用者的购置成本及业者的研发、制造及库存成本。(The invention discloses a hidden shackle padlock based on lock core replacement, which comprises: the lock body is provided with a locking groove, a bearing groove, a sliding groove and a through groove in a concave mode in the axial direction of the first end face; the lock body is concavely provided with a lock core groove in the axial direction of the second end surface; the lock body side edge is provided with a lock hook groove communicated with the lock groove and the through groove in a radial direction; the lock core is arranged in the lock core groove, and the tail end of the lock core is provided with a transmission part; the locking plate is arranged in the bearing groove, the locking plate is provided with a connecting part and a blocking piece, the connecting part is correspondingly connected with the transmission part in a transmission way, and the blocking piece slides in the sliding groove by being rotated by the locking plate and is shielded in the through groove at a first position and is not shielded in the through groove at a second position; the locking block is arranged in the through groove; and the lock hook is arranged in the lock hook groove and is provided with a concave part corresponding to the through groove and the lock block. The invention can improve the overall safety of the invention and can reduce the purchase cost of users and the research, development, manufacture and inventory cost of manufacturers.)

1. The utility model provides a hidden shackle padlock based on lock core is changed which characterized in that includes:

the lock body is provided with a first end face and a second end face which correspond to each other, and a locking groove, a bearing groove, a sliding groove and a through groove are concavely arranged in the axial direction of the first end face, the bearing groove is communicated with the sliding groove, and the through groove is concavely arranged on the wall surface of the bottom of the sliding groove; the lock body is concavely provided with a lock core groove in the axial direction of the second end surface, and the tail end of the lock core groove is communicated with the bearing groove; the lock body lateral margin is provided with a lock hook groove communicated with the lock groove and the through groove in a radial direction;

the lock core is arranged in the lock core groove, the tail end of the lock core is provided with a transmission part, and one end of the lock core, which is opposite to the transmission part, is provided with a lock hole;

the locking plate is arranged in the bearing groove and provided with a connecting part and a blocking piece, the connecting part is correspondingly connected with the transmission part in a transmission way, and the blocking piece slides in the sliding groove by being rotated by the locking plate and is shielded in the through groove at a first position and is not shielded in the through groove at a second position;

the locking block is arranged in the through groove and corresponds to the blocking piece;

a lock hook, which is arranged in the lock hook groove, is provided with a concave part corresponding to the through groove and the lock block, and is locked in the lock groove when in a locking position, and the concave part is positioned at the through groove; when the locking plate is at the second position, the locking block protrudes out of the through groove to be separated from the concave part, so that the locking hook can move to an unlocking position, and when the locking hook is at the unlocking position, the locking hook is not locked in the locking groove.

2. The concealed shackle padlock of claim 1, wherein the lock body has a groove axially recessed at the first end surface, and the lock body has a positioning groove axially recessed at the second end surface, the positioning groove communicating with the groove, and the shackle groove is recessed in a bottom wall surface of the positioning groove; the positioning groove is provided with a positioning cover which correspondingly covers the lock core and the positioning groove, and the positioning cover is provided with a through hole corresponding to the lock hole; the fixing groove is provided with a fixed connection component, and one end of the fixing groove is correspondingly and fixedly provided with the positioning cover.

3. The concealed shackle padlock as defined by claim 2, wherein the positioning cover further comprises a ring step surface at one end of the cylinder corresponding to the locking hole, the ring step surface comprises a knock preventing plate correspondingly covering the cylinder, and the knock preventing plate comprises a channel corresponding to the locking hole.

4. The concealed shackle padlock of claim 1, wherein the first end surface further comprises at least one protection plate that covers the receiving groove, the sliding groove and the through groove.

5. The concealed shackle padlock of claim 1, wherein the first end surface further axially defines a recess communicating with the shackle groove, a stop pin is disposed in the recess, and a guide groove corresponding to the stop pin is disposed on a lateral edge of the shackle in a recessed manner to limit sliding movement of the shackle between the locked position and the unlocked position.

6. The cylinder replacement based concealed shackle padlock of claim 5, wherein the lock body further comprises a stop surface in the shackle groove, and a collar portion is disposed at the top of the shackle, and a pre-resiliently compressible resilient member is disposed between the collar portion and the stop surface.

7. The concealed shackle padlock of claim 1, wherein the lock slot further comprises a set of receiving slots formed in a wall surface of the lock slot opposite to one end of the shackle slot, and the shackle is assembled with the set of receiving slots in the locked position.

8. The concealed shackle padlock of claim 1, wherein a bushing is further assembled at a radial end of the cylinder, and the cylinder slot corresponds to the profile of the cylinder and the bushing.

9. The cylinder replacement-based concealed shackle padlock of claim 1, wherein the bushing further defines a coupling hole at an end of the first end surface, the first end surface of the lock body further defines a combination hole corresponding to the coupling hole, and the combination hole defines a coupling member coupled to the coupling hole from an end of the first end surface.

10. The concealed shackle padlock of claim 1, wherein an elastic member is disposed between the receiving slot wall and the side edge of the blocking plate, the elastic member being configured to elastically urge the blocking plate to return to the first position.

11. The heart-replacement-based concealed shackle padlock of claim 10, wherein the elastomer is a volute spring.

12. The heart-replacement-based concealed shackle padlock as recited in claim 1, wherein the lock block is spherically shaped.

13. The concealed shackle padlock of claim 1, wherein the first end surface of the lock body is further recessed to form a recessed surface, and the lock slot is disposed on the recessed surface.

14. The lock cylinder replacement-based concealed shackle padlock as recited in claim 1, wherein the second end surface of the lock body is further provided with a cover, the cover correspondingly covers the lock cylinder and the lock hole when in a closed position, and the cover does not cover the lock cylinder and the lock hole when in an open position; one end of the protecting cover is provided with a positioning shaft, the first end surface and the second end surface of the lock body are provided with positioning holes corresponding to the positioning shaft in a penetrating way, the wall surface of each positioning hole is provided with a fixing hole, and each positioning hole is provided with a positioning component correspondingly connected with the positioning shaft; and a first elastic unit with elastic force in rotation direction, one end of the first elastic unit is assembled on the positioning shaft, the other end is assembled on the fixing hole, the first elastic unit elastically supports against the positioning shaft, so that the positioning shaft is driven by the protecting cover to move towards the covering position.

15. The cylinder replacement-based concealed shackle padlock as defined in claim 14, wherein the second end of the lock body further axially defines a shaft hole, a shaft sleeve is disposed in the shaft hole, a second resilient unit and a stop member are sequentially disposed in the shaft sleeve from an inner wall of the shaft hole, a ring step portion is formed in the shaft sleeve to be correspondingly positioned on the stop member, a protruding wall is disposed at a top end of the stop member and is capable of protruding from the ring step portion, the protruding wall is disposed in an arc shape corresponding to the protecting cover; the stop piece is elastically propped against by the second elastic unit to enable the convex wall to protrude out of the shaft hole and the ring step part, and when the stop piece is at the opening position, the protective cover is propped against the side edge of the convex wall by the elasticity of the first elastic unit.

16. The concealed shackle padlock of claim 1, wherein the connecting portion and the transmission portion are a protrusion and a recess having corresponding profiles.

17. The padlock of claim 1, wherein the driving portion is a groove, and the driving portion has a driving member correspondingly connected to the connecting portion, and the connecting portion and the driving member are a protrusion and a recess with corresponding profiles.

18. The concealed shackle padlock of claim 1, wherein the connecting portion and the transmission portion are two corresponding through holes, and a transmission pin is disposed between the two corresponding through holes for transmission.

Technical Field

The invention relates to a hidden shackle padlock based on lock core replacement, in particular to a hidden shackle padlock (Hockey L ock) with a lock core parallel to a lock groove and capable of replacing the lock core.

Background

As shown in FIGS. 1 and 2, a hidden padlock (Hockey L ock) is commonly used to lock large doors such as containers and cargo holds, and includes a lock body 10 having a lock slot 101, a connecting hole 102 disposed at one end of a side wall of the lock slot 101, a lock core 20 disposed in the connecting hole 102, a sliding slot 201 disposed at one end of the lock core 20, a lock hook 202 fixedly connected to the lock core 20, a locking slot 101 having a locking recess 103 disposed at an end opposite to the connecting hole 102, the lock hook 202 being rotated by the lock core 20 and locked in the locking recess 103 through the connecting hole 102, a screw hole 104 disposed on the same side of the lock slot 101 of the lock body 10 corresponding to the sliding slot 201, and a screw 30 locked by the screw hole 104, such that the screw 30 extends into the sliding slot 201 to limit the movement of the lock core 20.

However, in the conventional hidden padlock with a lock hook, the lock core 20 is installed on the lateral edge of the lock body 10, so that the position of the lock core 20 and the lock hole 203 thereof cannot be directly observed during unlocking, and the key cannot directly extend into the lock hole 203, so that the position of the lock core 20 and the direction of the lock hole 203 need to be repeatedly searched, which delays the unlocking time; in addition, the lock core 20 and the lock hook 202 are fixed to each other and cannot be detached, so that the user cannot replace the lock core according to the requirement; for example, the hidden padlock is used in a factory building, and is inconsistent with the lock core 20 of the home door and garage of the user, so that different locks need to be opened by using different keys, and the user needs to carry a plurality of keys at any time, which not only causes trouble in carrying by the user, but also causes the cooperation confusion between the locks and the keys of the user, further delays a plurality of unlocking times of the user, and brings great trouble to the user; furthermore, if the core 20 is cracked or damaged, it is necessary to purchase the core 20 and the lock body 10 again, and it is impossible to purchase and replace only the core 20 of a different key system, which will increase the extra cost for the user and the manufacturer will consume a lot of inventory cost.

In view of the above, the inventors of the present invention have made extensive studies on concealed padlock hooks, and have proceeded with research, development and improvement to solve the above problems, and have made the present invention after continuous experiments and modifications.

Disclosure of Invention

To solve the above problems, the present invention provides a hidden shackle padlock based on lock cylinder replacement, comprising: a lock body, which has a first end face and a second end face corresponding to each other, and is provided with a lock groove, a receiving groove, a sliding groove and a through groove in a concave manner in the axial direction of the first end face, wherein the receiving groove is communicated with the sliding groove, and the through groove is arranged on the wall surface of the bottom of the sliding groove in a concave manner; the lock body is concavely provided with a lock core groove in the axial direction of the second end surface, and the tail end of the lock core groove is communicated with the bearing groove; the lock body lateral margin is provided with a lock hook groove communicated with the lock groove and the through groove in a radial direction; the lock core is arranged in the lock core groove, the tail end of the lock core is provided with a transmission part, and one end of the lock core, which is opposite to the transmission part, is provided with a lock hole; the locking plate is arranged in the bearing groove and provided with a connecting part and a blocking piece, the connecting part is correspondingly connected with the transmission part in a transmission way, and the blocking piece slides in the sliding groove under the rotation of the locking plate and is shielded in the through groove at a first position and is not shielded in the through groove at a second position; the locking block is arranged in the through groove and corresponds to the blocking piece; a lock hook, which is arranged in the lock hook groove, is provided with a concave part corresponding to the through groove and the lock block, and is locked in the lock groove when in a locking position, and the concave part is positioned at the through groove; when the locking plate is at the second position, the locking block protrudes the through groove to separate from the concave part, so that the locking hook can move to an unlocking position, and when the locking hook is at the unlocking position, the locking hook is not locked in the locking groove.

According to the hidden shackle padlock based on lock cylinder replacement, a fixing groove is axially and concavely arranged at the first end face of the lock body, a positioning groove communicated with the fixing groove is concavely arranged at the axial direction of the second end face of the lock body, and the lock cylinder groove is concavely arranged on the wall surface at the bottom of the positioning groove; the positioning groove is provided with a positioning cover which correspondingly covers the lock core and the positioning groove, and the positioning cover is provided with a through hole corresponding to the lock hole; the fixing groove is provided with a fixed connection component, and one end of the fixing groove is correspondingly and fixedly provided with the positioning cover.

According to the hidden shackle padlock based on lock core replacement, a ring step surface is further arranged at one end of the positioning cover corresponding to the lock hole, an anti-knocking piece correspondingly covering the lock core is arranged on the ring step surface, and a channel corresponding to the lock hole is formed in the anti-knocking piece.

According to the hidden shackle padlock based on lock core replacement, at least one protection sheet is fixedly arranged on the first end face and correspondingly covers the bearing groove, the sliding groove and the through groove.

According to the hidden shackle padlock based on lock core replacement, a concave hole communicated with the shackle groove is axially and concavely arranged on the first end surface, a stop pin is arranged in the concave hole, and a guide groove corresponding to the stop pin is concavely arranged on the side edge of the shackle, so that the shackle slides between the locking position and the unlocking position in a limiting manner.

According to the hidden shackle padlock based on lock core replacement, the lock body is further provided with a stop step surface in the shackle groove, the top end of the shackle is provided with a convex ring part, and an elastic assembly which is elastically compressed in advance is arranged between the convex ring part and the stop step surface.

According to the hidden shackle padlock based on lock core replacement, a group of connecting grooves are further formed in the wall surface of the lock groove, which is opposite to one end of the lock groove, and the shackle is assembled in the group of connecting grooves when the shackle is located at the locking position.

According to the hidden shackle padlock based on lock core replacement, a bushing is further assembled at one radial end of the lock core, and the lock core groove corresponds to the outlines of the lock core and the bushing.

According to the hidden shackle padlock based on lock cylinder replacement, a group of connecting holes are further formed in one end, located on the first end face, of the bushing, a combination hole corresponding to the group of connecting holes is further formed in the first end face of the lock body, a assembling piece is arranged in the combination hole, and one end of the first end face of the assembling piece is assembled in the group of connecting holes.

According to the concealed shackle padlock based on lock core replacement, an elastic body is further arranged between the wall surface of the bearing groove and the side edge of the blocking piece, and the elastic body is configured to elastically push the blocking piece to reset towards the first position.

The hidden shackle padlock based on the lock cylinder replacement is characterized in that the elastic body is a volute spring.

According to the hidden shackle padlock based on lock core replacement, the lock block is arranged in a spherical shape.

According to the hidden shackle padlock based on lock core replacement, the first end surface of the lock body is further concavely arranged to form a concave step surface, and the lock groove is arranged on the concave step surface.

According to the hidden shackle padlock based on lock cylinder replacement, a protecting cover is further arranged on the second end face of the lock body, the protecting cover correspondingly shields the lock cylinder and the lock hole when in a covering position, and the protecting cover does not shield the lock cylinder and the lock hole when in an opening position; one end of the protecting cover is provided with a positioning shaft, the first end face of the lock body is provided with a positioning hole corresponding to the positioning shaft, the wall surface of the positioning hole is provided with a fixing hole, and the positioning hole is provided with a positioning component correspondingly connected with the positioning shaft; and a first elastic unit with elastic force in rotation direction, one end of the first elastic unit is assembled on the positioning shaft, the other end is assembled on the fixing hole, the first elastic unit is elastically propped against the positioning shaft, so that the positioning shaft is driven by the protective cover to move towards the covering position.

According to the hidden shackle padlock based on lock core replacement, the second end face of the lock body is also axially and concavely provided with a shaft hole, a shaft sleeve is arranged in the shaft hole, a second elastic unit and a stop part are sequentially arranged in the shaft sleeve from the inner wall surface of the shaft hole, a ring step part is formed in the shaft sleeve to be correspondingly limited on the stop part, a convex wall capable of protruding out of the ring step part is arranged at the top end of the stop part, and the convex wall is arranged in an arc shape corresponding to the protecting cover; the stop piece is elastically propped against by the second elastic unit to enable the convex wall to protrude out of the shaft hole and the ring step part, and when the stop piece is at the opening position, the protective cover is propped against the side edge of the convex wall by the elasticity of the first elastic unit.

According to the hidden shackle padlock based on lock core replacement, the connecting part and the transmission part are the convex block and the concave hole with corresponding outlines.

According to the hidden shackle padlock based on lock core replacement, the transmission part is a groove, the transmission part is provided with a transmission assembly, the transmission assembly is correspondingly connected to the connecting part in a transmission manner, and the connecting part and the transmission assembly are lugs with corresponding outlines.

According to the hidden shackle padlock based on lock core replacement, wherein the connecting part and the transmission part are respectively two corresponding through holes, and a transmission pin is respectively arranged between the corresponding through holes in a transmission manner.

It is apparent from the above description and arrangement that the present invention has the following advantages and effects, which are described in detail one by one:

1. the first end face is provided with a lock groove, the opposite second end face is provided with a lock core groove for installing a lock core, and the direction of a lock hole of the lock core and the direction of the lock groove are both axial, so when the door is locked, the lock groove and the guard sheet are tightly attached to the door, components in the bearing groove, the sliding groove and the through groove cannot be removed, and the anti-theft effect is achieved.

2. After the lock is unlocked, the lock core of various different key systems can be replaced directly by removing the positioning cover without replacing the lock shell, so that the effects of control and theft prevention are achieved, and the purchase cost of a user and the research, development, manufacturing and inventory cost of a manufacturer can be reduced; and the user can replace the lock core with the same lock core of the user door lock, so as to be beneficial to unifying the lock core system, and the user can open locks of different places and types only by wearing a key, thereby greatly improving the convenience and wide applicability in use and carrying, and effectively reducing the inventory and purchase cost.

3. The anti-knock sheet can be arranged, the lock core can be prevented from being damaged by external force, and the integral strength and the anti-theft performance of the scheme can be greatly improved.

4. The invention is provided with the protecting cover to correspondingly shield the lock core and the lock hole when the lock is closed, thereby effectively preventing liquid or dust from invading, achieving the probability of preventing the lock from being rusted, rusted and embrittled or stuck, and further improving the service life of the whole lock; when the lock is to be unlocked, the protecting cover can be pivoted to enable the protecting cover not to be shielded in the lock core and the lock hole, so that a user can unlock the lock through the lock hole.

Drawings

Fig. 1 is a perspective view of a conventional concealed padlock.

Fig. 2 is a perspective exploded view of a conventional concealed padlock.

Fig. 3 is a perspective view of the present invention.

Fig. 4 is a perspective view of another aspect of the present invention.

Fig. 5 is a schematic perspective exploded view of the present invention.

Fig. 6 is a perspective exploded view of another aspect of the present invention.

FIG. 7 is a cross-sectional view of FIG. 3 at the position A-A and at the detent position.

FIG. 8 is a front view of the present invention showing the protective plate hidden and the locking plate in the first position.

FIG. 9 is a front view of the present invention with the protective plate hidden and the locking plate in the second position and the present invention in the unlocked position.

FIG. 10 is a schematic cross-sectional view of FIG. 3 in the A-A position and in the unlocked position.

Fig. 11 is a cross-sectional view of fig. 3 at a-a position with the latch hook at the latching position and the blocking plate not moved to the first position.

FIG. 12 is a perspective exploded view of the different lock barrel and bushing of the present invention.

FIG. 13 is a perspective exploded view of another different lock cylinder and bushing of the present invention.

FIG. 14 is a perspective exploded view of another different lock cylinder of the present invention, wherein the transmission portion is a groove.

FIG. 15 is a perspective exploded view of another different lock cylinder of the present invention with a through hole in the transmission portion.

Fig. 16 is a perspective view of the present invention with the cover in the closed position.

Fig. 17 is a schematic cross-sectional view of fig. 4 at position B-B.

Wherein: 10. a lock body 101, a lock hole 102, a connecting hole 103, a clamping groove 104, a screw hole 20, a lock core 201, a sliding groove 202, a lock hook 203, a lock hole 30, a screw 1, 1 ', 1 ", a lock body 11, a first end face 111, a lock groove 112, a receiving groove 113, a sliding groove 114, a through groove 115, a concave step face 116, an assembling groove 117, a concave hole 118, a stop step face 119, a fixing groove 12, a second end face 121, a lock core groove 122, a positioning groove 123, a shaft hole 13, a lock hook groove 14, a combining hole 141, a combining piece 15, a positioning hole 151, a fixing hole 2, a lock core 21, 21', 21", a transmission part 211, a transmission assembly 212, a transmission pin 22, a lock hole 23, a positioning cover 231, a stop face 24, a through hole 25, a fixing assembly 26, a ring step face 27, a knock-proof piece 271, a channel 28, a bush, 281. the locking device comprises a combination hole, 3, a locking piece, 31', a connecting part, 32, a blocking piece, 33, an elastic body, 4, a locking piece, 5, a locking hook, 51, a concave part, 52, a stop pin, 53, a guide groove, 54, a convex ring part, 55, an elastic component, 6, a protective piece, 7, a protective cover, 71, a positioning shaft, 72, a positioning component, 73, a first elastic unit, 8, a shaft sleeve, 81, a second elastic unit, 82, a stop part, 821, a convex wall, 83 and a ring step part.

Detailed Description

In the following detailed description, numerous preferred embodiments are described with reference to the accompanying drawings to provide a thorough understanding of the invention.

Referring to fig. 3 to 6, the present invention is a concealed shackle padlock based on lock core replacement, which includes:

a lock body 1 having a first end face 11 and a second end face 12 corresponding to each other, and a locking groove 111, a receiving groove 112, a sliding groove 113 and a through groove 114 being recessed in an axial direction of the first end face 11, wherein the receiving groove 112 is communicated with the sliding groove 113, and the through groove 114 is recessed in a bottom wall surface of the sliding groove 113; the lock body 1 is provided with a lock cylinder groove 121 in a concave manner in the axial direction of the second end face 12, and the tail end of the lock cylinder groove 121 is communicated with the receiving groove 112; the lock body 1 has a radial side edge provided with a lock hook slot 13 communicated with the lock slot 111 and the through slot 114; in order to match the locking form of the existing hidden shackle padlock, the first end surface 11 of the lock body 1 is further recessed to form a recessed surface 115, and the lock groove 111 is disposed on the recessed surface 115;

a lock core 2 disposed in the lock core groove 121, wherein a transmission portion 21 is disposed at a tail end of the lock core 2, and a lock hole 22 is disposed at an end of the lock core 2 opposite to the transmission portion 21;

a locking plate 3 disposed in the receiving groove 112, the locking plate 3 having a connecting portion 31 and a blocking piece 32, the connecting portion 31 being correspondingly connected to the transmission portion 21, and the blocking piece 32 being rotated by the locking plate 3 to slide in the sliding groove 113, and covering the through groove 114 at a first position, and not covering the through groove 114 at a second position;

a locking piece 4 disposed in the through slot 114, wherein the locking piece 4 corresponds to the blocking piece 32;

a locking hook 5 disposed in the locking hook slot 13, the locking hook 5 having a concave portion 51 corresponding to the through slot 114 and the locking block 4;

the lock core 2 can be driven by the driving portion 21 to the connecting portion 31 to rotate the lock plate 3, and when the lock plate 3 is at a locking position, as shown in fig. 7, the lock hook 5 is locked in the lock groove 111, and the recess 51 is located at the through groove 114, and when the lock plate 3 is at the first position, as shown in fig. 8, the blocking piece 32 blocks the protruding through groove 114 of the lock block 4, so that the lock block 4 is locked in the recess 51; in order to increase the positioning ability of the locking hook 5 at the locking position, a set of connecting grooves 116 is further formed on the wall surface of the locking groove 111 opposite to one end of the locking hook groove 13, and the locking hook 5 is assembled in the set of connecting grooves 116 at the locking position; as shown in fig. 9, when the lock core 2 rotates the lock plate 3 to the second position, the lock block 4 is forced to protrude the through slot 114 to disengage from the recess 51 as shown in fig. 10, so that the lock hook 5 can move to an unlocking position as shown in fig. 9 and 10, and when the locking position is reached, the lock hook 5 is not locked in the lock slot 111.

As for the positioning of the locking plate 3 and the locking block 4, in a preferred embodiment, at least one protection plate 6 is further fixedly disposed on the first end surface 11, and the protection plate 6 is correspondingly covered on the receiving groove 112, the sliding groove 113 and the through groove 114, so as to reliably position the locking plate 3 and the locking block 4 in the receiving groove 112, the sliding groove 113 and the through groove 114, respectively; in addition, the moving position of the locking piece 4 can be limited, so that when the locking piece 3 is at the second position, the locking piece 4 protrudes out of the through groove 114 to be separated from the concave part 51, and is also limited on the wall surface of the protection piece 6, as shown in fig. 10, when the locking piece 3 is rotated from the second position to the first position, the blocking piece 32 can force the locking piece 4 into the through groove 114 to be located at the locking position; in order to make the rotation of the locking plate 3 can force the locking block 4 into the through groove 114 easily, therefore, in a preferred mode, the locking block 4 is arranged in a spherical shape, so that the locking plate 3 can force the locking block 4 by a spherical surface, therefore, it can be known that when the locking block 4 protrudes out of the through groove 114, the position of the spherical center of the locking block 4 does not exceed the locking plate 3, and the arrangement of the protection plate 6 can not only protect and position the locking plate 3 and the locking block 4, but also limit the position of the locking block 4 protruding out of the through groove 114; the positioning manner of the protection plate 6 is, in the present embodiment, fixed to the lock body 1 through screws, and it is understood that the lock body 1 may be provided with corresponding screw holes, which is merely illustrative and not limited thereto.

In order to prevent the locking hook 5 from completely separating from the locking hook groove 13 in the unlocking position, it is preferable that, as shown in fig. 5 to 7, the first end surface 11 is further axially recessed with a recess 117 communicating with the locking hook groove 13, the recess 117 is provided with a stop pin 52, and the side edge of the locking hook 5 is recessed with a guide groove 53 corresponding to the stop pin 52, so as to make the locking hook 5 slide between the locking position and the unlocking position in a limited manner as shown in fig. 7 and 10; in order to further enable the locking hook 5 to be separated from the locking groove 111 and move to the unlocking position when the locking plate 3 is rotated to the second position at the locking position, in a preferred embodiment, the lock body 1 is further provided with a stop step surface 118 in the locking groove 13, the top end of the locking hook 5 is provided with a convex ring portion 54, the convex ring portion 54 and the stop step surface 118 are provided with an elastic component 55 which is elastically compressed in advance, so that when the locking piece 4 is separated from the concave portion 51 of the locking hook 5, the locking hook 5 can move to the unlocking position by the elastic force of the elastic component 55 which is elastically reset.

As mentioned above, in order to facilitate the locking hook 5 to push the locking hook 5 protruding from the locking hook groove 13 into the locking hook groove 13 from the unlocking position and lock the locking hook 5 in the locking groove 111, the locking plate 3 can be immediately and automatically moved to the first position, so that the elastic body 33 is further disposed between the wall surface of the receiving groove 112 and the side edge of the blocking piece 32, the elastic body 33 is configured to elastically abut against the blocking piece 32 to return to the first position, in a specific embodiment, the elastic body 33 can be a volute spring, so that when the locking hook 5 is located at the locking position, as shown in fig. 11, the concave portion 51 is located at the locking piece 4, and at this time, the elastic force caused by the return of the elastic body 33 can drive the locking plate 3 to rotate, so that the blocking piece 32 is moved to the first position as shown in fig. 7 and 8, and as mentioned above, the locking piece 4 is pushed into the through groove 114 and located at the concave portion 51 of the locking hook 5 to position the locking hook 5; in addition, since the lock plate 3 is driven and connected to the driving portion 21 by the connecting portion 31, the lock core 2 is driven by the lock plate 3 to rotate correspondingly.

Regarding the fixing and replacing manner of the lock cylinder 2, in a preferred embodiment, as shown in fig. 5 and 6, a fixing groove 119 is axially recessed at the first end surface 11 of the lock body 1, a positioning groove 122 communicated with the fixing groove 119 is recessed in the axial direction of the second end surface 12 of the lock body 1, and the lock cylinder groove 121 is recessed on the bottom wall surface of the positioning groove 122; the positioning slot 122 is provided with a positioning cover 23, the positioning cover 23 correspondingly covers the lock core 2 and the positioning slot 122, and the positioning cover 23 is provided with a through hole 24 corresponding to the lock hole 22; the fixing slot 119 is provided with a fixing component 25, which is formed by fixing the positioning cover 23 at one end of the fixing slot 119; therefore, when the lock core 2 needs to be replaced, the lock core 2 and the positioning cover 23 can be removed and replaced by only removing the fixing component 25 from the fixing groove 119 of the first end surface 11; after the lock core 2 is replaced, the lock core 2 is only required to be placed into the lock core groove 121, the transmission part 21 of the lock core 2 is in transmission connection with the connecting part 31 of the lock plate 3, the positioning cover 23 can be installed in the positioning groove 122, and then the fixing component 25 is positioned on the positioning cover 23 through the fixing groove 119, so that the positioning of the lock core 2 can be completed.

In another preferred embodiment, in order to further prevent the lock core 2 from being damaged by being knocked by force and losing the locking function, the positioning cover 23 is further provided with a ring step surface 26 at one end of the lock core 2 corresponding to the lock hole 22, the ring step surface 26 is provided with a knock preventing piece 27 correspondingly covering the lock core 2, the knock preventing piece 27 is provided with a channel 271 corresponding to the lock hole 22, and when the key is inserted into the lock hole 22 and the lock core 2 is rotated, because the knock preventing piece 27 is only arranged on the ring step surface 26, the knock preventing piece 27 will be clamped by the key against the inner wall surface of the channel 271, so as to rotate together with the lock core 2.

In order to further fix the lock core 2 stably, and because the lock core 2 is usually configured with lock balls, the lock core 2 is usually in a gourd shape, and the lock balls of different types of the lock cores 2 are different in form and configuration, in order to make the lock core groove 121 of the lock body 1 can reliably receive and fix the lock core 2 of each form, a bush 28 is further assembled at one radial end of the lock core 2, and the lock core groove 121 corresponds to the outlines of the lock core 2 and the bush 28; therefore, in the present embodiment, the bush 28 corresponding to the lock cylinder groove 121 can be disposed on the outer profile of each different lock cylinder 2 to be assembled on the lock cylinder 2, as shown in fig. 12 and 13, so as to enhance the overall applicability of the present invention; in another preferred embodiment, the bushing 28 further has a connecting hole 281 at one end of the first end surface 11, the first end surface 11 of the lock body 1 further has a combining hole 14 corresponding to the connecting hole 281, and the combining hole 14 has a connecting member 141, the connecting member 141 is assembled in the connecting hole 281 from one end of the first end surface 11, so as to further increase the positioning capability of the lock cylinder 2, and prevent the lock cylinder 2 or the positioning cover 23 from being damaged by external force and the lock cylinder 2 from being removed.

As mentioned above, since the transmission forms of the existing lock cores 2 are different, as shown in the present embodiment, the connecting portion 31 and the transmission portion 21 are convex blocks and concave holes with corresponding profiles, and the convex blocks and concave holes may be disposed in corresponding semi-circles, and in an embodiment, may also be in geometric shapes capable of being assembled correspondingly; in another embodiment, as shown in fig. 15, if the transmission portion 21 'is a groove, a transmission component 211 can be disposed on the transmission portion 21', the transmission component 211 is correspondingly connected to the connection portion 31 in a transmission manner, and the connection portion 31 and the transmission component 211 are bumps and recesses having corresponding profiles, so that the lock core 2 with the transmission portion 21 as the groove can still be applied to the present invention; in another embodiment, as shown in fig. 16, the transmission portion 21 "has two through holes, and at this time, the connection portion 31 'should also be configured as corresponding through holes, and a transmission pin 212 is respectively disposed between the corresponding through holes for transmission, and the transmission portion 21" and the connection portion 31' can still be transmitted by the transmission pin 212; therefore, it is obvious that the present invention can be applied to various lock cores 2 with different transmission types.

If the lock core 2 and the bush 28 with special specifications have the outlines, so that the lock core 2 cannot be reliably assembled in the lock core groove 121 of the present invention, the lock body 1, 1', 1 ″ of the present invention can be additionally provided with the lock core groove 121 corresponding to the outlines of the lock core 2 and the bush 28, as shown in fig. 6, 14, and 15, the outlines of the longitudinal lock core 2, the bush 28, and the lock core groove 121 are different, but the present invention can also be applied to the structural mechanism of the lock catch and the lock core 2 replacement of the present invention.

In another embodiment, in order to increase the service life of the lock cylinder 2, in one embodiment, the second end face 12 of the lock body 1 is further provided with a protecting cover 7, and when the protecting cover 7 is in a covering position, as shown in fig. 16, the protecting cover correspondingly covers the lock cylinder 2 and the lock hole 22 to prevent external liquid, dust and foreign matters from invading the lock cylinder 2; when the protecting cover 7 is at an open position, as shown in fig. 4, it is not covered on the lock core 2 and the lock hole 22, so that when the user pivots the protecting cover 7 to the open position, the lock hole 22 is exposed, which is favorable for inserting a key to unlock; specifically, a positioning shaft 71 is disposed at one end of the protecting cover 7, a positioning hole 15 corresponding to the positioning shaft 71 is disposed through the first end surface 11 and the second end surface 12 of the lock body 1, a fixing hole 151 is disposed on a wall surface of the positioning hole 15, and a positioning assembly 72 correspondingly connected to the positioning shaft 71 is disposed on the positioning hole 15; and a first elastic unit 73, it has elastic force in the direction of rotation, and the first elastic unit 73 is a end group locates the locating shaft 71, another end group locates the fixed hole 151, the first elastic unit 73 supports the locating shaft 71 by elasticity, make the locating shaft 71 transmit and move towards the closed position in the protecting cover 7, when making the position to be unlocked, will make the protecting cover 7 shield the lock core 2 and the lock hole 22 correspondingly by the elasticity of the first elastic unit 73 automatically, in order to prevent users from forgetting to make the protecting cover 7 move to the closed position and cause to lose its lock core 2 protective function.

In order to ensure that the protecting cover 7 can reliably shield the lock hole 22 in the unlocking position, in an embodiment, a stop surface 231 is further axially recessed in the positioning cover 23, and in the covering position, the protecting cover 7 abuts against the stop surface 231.

Since the elastic force of the first elastic unit 73 continuously moves the protecting cover 7 toward the covering position, in order to prevent the protecting cover from interfering the rotation of the lock core 2 by the user, in an embodiment, as shown in fig. 4 to 6, 16, and 17, an axial hole 123 may also be axially recessed in the second end face 12 of the lock body 1, a shaft sleeve 8 is disposed in the axial hole 123, a second elastic unit 81 and a stopper 82 are sequentially disposed in the shaft sleeve 8 from the inner wall surface of the axial hole 123, a ring step portion 83 is formed in the shaft sleeve 8 to correspond to the stopper 82, a convex wall 821 capable of protruding in the ring step portion 83 is disposed at the top end of the stopper 82, and the convex wall 821 is disposed in an arc shape corresponding to the protecting cover 7; the stopper 82 is elastically pressed by the second elastic unit 81 to make the protruding wall 821 protrude in the shaft hole 123 and the annular step portion 83, so that when a user inserts a key and rotates the lock core 2, the protective cover 7 can be moved to the open position, and the protective cover 7 is pressed against the side edge of the protruding wall 821 by the elastic force of the first elastic unit 73; when the cover is to be moved to the covering position, only a slight force needs to be applied to the protecting cover 7, so that the protecting cover 7 presses the protruding wall 821 to extend into the shaft sleeve 8, so that the protecting cover 7 can automatically return to the covering position by the elastic force of the first elastic unit 73; it can be known that, in order to make the protective cover 7 capable of pressing the raised wall 821, the raised wall 821 has a corresponding curved surface, which is configured in the prior art and thus will not be described herein.

In summary, the present invention is only a few preferred embodiments, but should not be limited by the scope of the invention, and all equivalent changes and modifications made in the claims and the specification should be considered within the scope of the invention.