阅读说明：本技术 盲板锁 (Blind plate lock ) 是由 陈钦文 梁涛 文琪 周子敬 于 2020-06-30 设计创作，主要内容包括：本发明提供了一种盲板锁。盲板锁,包括：第一锁定部,第一锁定部具有第一容纳槽；第二锁定部,第二锁定部具有第二容纳槽,且第一容纳槽的槽口和第二容纳槽的槽口相向设置；伸缩部,伸缩部的两端分别与第一锁定部和第二锁定部连接,且伸缩部能够伸长或者收缩以改变第一锁定部和第二锁定部之间的距离；锁定组件,锁定组件的至少一部分设置在第二锁定部的内部,且锁定组件具有锁定状态和解锁状态,当锁定组件由锁定状态切换至解锁状态时,锁定组件解除对伸缩部的锁定以使伸缩部能够伸长或者收缩。本发明解决了现有技术中盲板锁携带不方便以及滑杆占用空间大的问题。(The invention provides a blind plate lock. A blind panel lock comprising: a first locking part having a first receiving groove; the second locking part is provided with a second accommodating groove, and the notch of the first accommodating groove and the notch of the second accommodating groove are oppositely arranged; the telescopic part is connected with the first locking part and the second locking part at two ends respectively and can extend or contract to change the distance between the first locking part and the second locking part; and the locking assembly is at least partially arranged inside the second locking part and has a locking state and an unlocking state, and when the locking assembly is switched from the locking state to the unlocking state, the locking assembly releases the locking of the telescopic part so as to enable the telescopic part to extend or contract. The invention solves the problems that the blind plate lock in the prior art is inconvenient to carry and the slide bar occupies a large space.)

1. A blind latch comprising:

a first locking portion (10), the first locking portion (10) having a first accommodation groove (11);

a second locking part (20), the second locking part (20) having a second receiving groove (21), and a notch of the first receiving groove (11) and a notch of the second receiving groove (21) being disposed opposite to each other;

a telescopic part (30), both ends of the telescopic part (30) are respectively connected with the first locking part (10) and the second locking part (20), and the telescopic part (30) can be extended or contracted to change the distance between the first locking part (10) and the second locking part (20);

a locking assembly (40), at least a part of the locking assembly (40) being disposed inside the second locking portion (20), and the locking assembly (40) having a locked state and an unlocked state, when the locking assembly (40) is switched from the locked state to the unlocked state, the locking assembly (40) releasing the locking of the telescopic portion (30) to enable the telescopic portion (30) to be extended or contracted.

2. The blind latch of claim 1 wherein said locking assembly (40) comprises:

a plug assembly (41);

spacing subassembly (42), lock core subassembly (41) with spacing subassembly (42) pivotal connection, pars contractilis (30) are passed spacing subassembly (42), just spacing subassembly (42) have a limit position and a position of stepping down, work as locking subassembly (40) by the unblock state switches over to during the lock-out state, lock core subassembly (41) drive spacing subassembly (42) rotate, spacing subassembly (42) by the position of stepping down switches over to limit position makes at least some emergence of pars contractilis buckled so that the length of pars contractilis (30) can not be adjusted.

3. The blind latch of claim 2 wherein said stop assembly (42) comprises:

the transmission gear (421), the lock cylinder component (41) is in driving connection with the transmission gear (421);

the driven gear (422) is meshed with the transmission gear (421), a limiting column (4221) extending along the thickness direction of the driven gear (422) is arranged on the gear surface of the driven gear (422), and the telescopic portion (30) penetrates through the limiting column (4221) along the radial direction of the limiting column (4221).

4. A blind plate lock according to claim 3, characterized in that the second locking portion (20) comprises:

a housing (22), the housing (22) having the second receiving slot (21), and at least a portion of the locking assembly (40) being disposed inside the housing (22);

a reel (23), the reel (23) being disposed inside the housing (22), the extendable portion (30) being connected to the reel (23), the reel (23) being rotatable relative to the housing (22) to enable the extendable portion (30) to be extended or retracted.

5. The blind plate lock according to claim 4, wherein the second locking portion (20) further comprises a coil spring (24), one end of the coil spring (24) abuts against the housing (22), the other end of the coil spring (24) abuts against the reel (23), and when the limiting assembly (42) is located at the abdicating position, the coil spring (24) drives the reel (23) to rotate so as to contract the telescopic portion (30).

6. The blind plate lock according to claim 4, wherein the housing (22) comprises a body part (221), the body part (221) has the second receiving groove (21), and the body part (221) further has a first mounting groove (2211) and a second mounting groove (2212), one end of the stopper assembly (42) protrudes into the inside of the first mounting groove (2211), and one end of the reel (23) protrudes into the inside of the second mounting groove (2212).

7. The blind latch of claim 6 wherein,

the bottom of the first mounting groove (2211) is provided with a first positioning column (22111) extending towards the notch of the first mounting groove (2211), and the driven gear (422) is sleeved on the first positioning column (22111);

the bottom of the second mounting groove (2212) is provided with a second positioning column (22121) extending towards the notch of the second mounting groove (2212), and one end of the reel (23) is sleeved on the second positioning column (22121).

8. The blind plate lock according to claim 7, wherein the first positioning columns (22111) and the second positioning columns (22121) are arranged at intervals along the telescopic direction of the telescopic part (30).

9. The blind latch of claim 7 wherein the housing (22) further comprises a cover (222), the cover (222) being disposed over the housing (22) such that the locking assembly (40) and the spool (23) are disposed between the cover (222) and the housing (22).

10. The blind lock of claim 9 wherein the side of the cover (222) facing the housing (22) has a first receiving cavity (2221) and a second receiving cavity (2222) spaced apart, at least a portion of the plug assembly (41) is disposed in the first receiving cavity (2221), the other end of the retainer assembly (42) is disposed in the second receiving cavity (2222), and the second receiving cavity (2222) has a third positioning post (22221) extending toward the housing (22), and the other end of the spool (23) is fitted over the third positioning post (22221).

11. Blind plate lock according to any of claims 1 to 9, characterized in that the axes of the first receiving groove (11) and the second receiving groove (21) are located on the same straight line.

12. Blind plate lock according to one of claims 1-9, characterized in that the telescopic part (30) has a fixing section (31) at its end close to the second locking part (20),

the fixed segment (31) is wound on the reel (23) of the second locking portion (20); or

The fixing segment (31) is fixedly connected with the reel (23) of the second locking part (20).

13. Blind latch according to any of claims 1 to 9, characterized in that the outer jacket of the telescopic part (30) is provided with a protective sleeve made of polycarbonate material.

Technical Field

The invention relates to the field of lockset equipment, in particular to a blind plate lock.

Background

The blind plate lock is mainly used for industrial pipelines such as petroleum, chemical engineering and the like, when the pipelines are overhauled, a blind plate is generally arranged between the pipelines to plug the pipelines, and a nut on a pipeline flange provided with the blind plate needs to be locked, so that accidents caused by mistaken drawing of the blind plate due to manual disassembly of the flange nut are avoided; common blind plate lock all adopts the slide bar structure in the market, and the activity hood through the slide bar locks on the nut, locks and generally adopts the padlock mode, and the operation is inconvenient, and its slide bar sets up longer, and the movable block is great, is difficult to the shutting to some narrow and small flange nuts in space.

Therefore, the problems that the blind plate lock is inconvenient to carry and the occupied space of the sliding rod is large exist in the prior art.

Disclosure of Invention

The invention mainly aims to provide a blind plate lock, and aims to solve the problems that the blind plate lock in the prior art is inconvenient to carry and a sliding rod occupies a large space.

To achieve the above object, according to one aspect of the present invention, there is provided a blind plate lock including: a first locking part having a first receiving groove; the second locking part is provided with a second accommodating groove, and the notch of the first accommodating groove and the notch of the second accommodating groove are oppositely arranged; the telescopic part is connected with the first locking part and the second locking part at two ends respectively and can extend or contract to change the distance between the first locking part and the second locking part; and the locking assembly is at least partially arranged inside the second locking part and has a locking state and an unlocking state, and when the locking assembly is switched from the locking state to the unlocking state, the locking assembly releases the locking of the telescopic part so as to enable the telescopic part to extend or contract.

Further, the locking assembly includes: a plug assembly; spacing subassembly, lock core subassembly and spacing subassembly pivotal connection, the pars contractilis passes spacing subassembly, and spacing subassembly has limiting position and the position of stepping down, and when locking subassembly switched to the locking state by the unblock state, lock core subassembly drove spacing subassembly and rotates, and spacing subassembly switches to limiting position and makes at least some emergence of pars contractilis buckle so that the length of pars contractilis can not adjust by the position of stepping down.

Further, spacing subassembly includes: the lock core assembly is in driving connection with the transmission gear; the driven gear is meshed with the transmission gear, a limiting column extending along the thickness direction of the driven gear is arranged on the gear surface of the driven gear, and the telescopic part penetrates through the limiting column along the radial direction of the limiting column.

Further, the second locking portion includes: the shell is provided with a second accommodating groove, and at least one part of the locking assembly is arranged in the shell; the reel, the reel setting is in the inside of casing, and the pars contractilis is connected with the reel, and the reel can rotate so that the pars contractilis can extend or contract relatively the casing.

Further, the second locking portion further comprises a coil spring, one end of the coil spring is abutted to the shell, the other end of the coil spring is abutted to the reel, and when the limiting assembly is located at the abdicating position, the coil spring drives the reel to rotate so that the telescopic portion contracts.

Further, the casing includes this somatic part, and this somatic part has the second holding tank, and this somatic part still has first mounting groove and second mounting groove, and the one end of spacing subassembly stretches into the inside of first mounting groove, and the one end of reel stretches into the inside of second mounting groove.

Furthermore, a first positioning column extending towards the notch of the first mounting groove is arranged at the bottom of the first mounting groove, and the driven gear is sleeved on the first positioning column; the bottom of the second mounting groove is provided with a second positioning column extending towards the notch of the second mounting groove, and one end of the reel is sleeved on the second positioning column.

Furthermore, the first positioning columns and the second positioning columns are arranged at intervals along the telescopic direction of the telescopic part.

Further, the housing further comprises a cover body which covers the housing, so that the locking assembly and the reel are arranged between the cover body and the housing.

Furthermore, the lid has the first chamber and the second chamber that holds that the interval set up towards one side of casing, and at least a part setting of lock core subassembly is in the first intracavity that holds, and the other end setting of spacing subassembly holds the intracavity at the second, and the second holds the chamber and has the third reference column that extends towards the casing, and the other end cover of reel is established on the third reference column.

Further, the axes of the first accommodating groove and the second accommodating groove are located on the same straight line.

Furthermore, one end of the telescopic part close to the second locking part is provided with a fixed section which is wound on the reel of the second locking part; or the fixed segment is fixedly connected with the reel of the second locking part.

Further, the outside cover of pars contractilis is equipped with the protective sheath, and the protective sheath is made by the polycarbonate material.

By applying the technical scheme of the invention, the blind plate lock comprises a first locking part, a second locking part, a telescopic part and a locking assembly, wherein the first locking part is provided with a first accommodating groove; the second locking part is provided with a second accommodating groove, and the notch of the first accommodating groove and the notch of the second accommodating groove are oppositely arranged; the two ends of the telescopic part are respectively connected with the first locking part and the second locking part, and the telescopic part can extend or contract to change the distance between the first locking part and the second locking part; at least a part of the locking assembly is arranged inside the second locking part, the locking assembly has a locking state and an unlocking state, and when the locking assembly is switched from the locking state to the unlocking state, the locking assembly releases the locking of the telescopic part so that the telescopic part can extend or contract.

When the blind plate lock with the structure is used, the first locking part and the second locking part can limit the bolts and nuts of the flange blind plate through the first accommodating groove and the second accommodating groove respectively, and due to the fact that the telescopic part and the locking assembly are arranged, after the telescopic part is locked by the locking assembly, the telescopic part can not stretch out and draw back any more, the relative distance between the first locking part and the second locking part can not be adjusted any more, the first locking part and the second locking part can not be taken down from the bolts and the nuts, and then the bolts and the nuts are locked. When the blind plate lock locks the bolt and the nut, the redundant part of the telescopic part is accommodated in the second locking part, so that the space occupied by the blind plate lock is reduced. Therefore, the telescopic part is used for replacing the original slide bar, and the problems that the slide bar of the original blind plate lock cannot be telescopic, so that the blind plate lock is inconvenient to carry and the slide bar occupies a large space are effectively solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates an exploded view of a blind plate lock according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a cover body of a blind plate lock in the present application;

FIG. 3 is a schematic diagram illustrating the relationship of the stop assembly of the blind plate lock of the present application in a yield position;

FIG. 4 is a schematic diagram showing the relationship of the stop assembly of the blind latch of the present application in the stop position;

FIG. 5 is a schematic diagram illustrating the position relationship between the blind plate lock and the blind plate when the blind plate lock does not lock the blind plate;

fig. 6 is a schematic diagram illustrating a position relationship between a blind plate lock and a blind plate when the blind plate lock locks the blind plate in the present application.

Wherein the figures include the following reference numerals:

10. a first locking section; 11. a first accommodating groove; 20. a second locking portion; 21. a second accommodating groove; 22. a housing; 221. a body portion; 2211. a first mounting groove; 22111. a first positioning post; 2212. a second mounting groove; 22121. a second positioning column; 222. a cover body; 2221. a first accommodating chamber; 2222. a second accommodating chamber; 22221. a third positioning column; 23. coiling; 24. a coil spring; 30. a telescopic part; 31. a fixed section; 40. a locking assembly; 41. a plug assembly; 42. a limiting component; 421. a transmission gear; 422. a driven gear; 4221. a limiting column.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, 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.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problems that a blind plate lock in the prior art is inconvenient to carry and a sliding rod occupies a large space, the application provides a blind plate lock.

As shown in fig. 1 to 6, the blind plate lock of the present application includes a first locking part 10, a second locking part 20, a telescopic part 30, and a locking assembly 40, the first locking part 10 having a first receiving groove 11; the second locking portion 20 has a second receiving groove 21, and a notch of the first receiving groove 11 and a notch of the second receiving groove 21 are oppositely disposed; both ends of the telescopic part 30 are connected with the first locking part 10 and the second locking part 20, respectively, and the telescopic part 30 can be extended or contracted to change the distance between the first locking part 10 and the second locking part 20; at least a part of the locking assembly 40 is disposed inside the second locking portion 20, and the locking assembly 40 has a locked state and an unlocked state, and when the locking assembly 40 is switched from the locked state to the unlocked state, the locking assembly 40 releases the locking of the telescopic part 30 to enable the telescopic part 30 to be extended or contracted.

When the blind plate lock with the structure is used, the first locking part 10 and the second locking part 20 can limit the bolts and nuts of the flange blind plate through the first accommodating groove 11 and the second accommodating groove 21 respectively, and due to the telescopic part 30 and the locking assembly 40, after the telescopic part 30 is locked by the locking assembly 40, the telescopic part 30 can not be stretched any more, and the relative distance between the first locking part 10 and the second locking part 20 can not be adjusted any more, so that the first locking part 10 and the second locking part 20 can not be taken down from the bolts and nuts, and the bolts and nuts can be locked. And when the blind lock locks the bolt and the nut, the surplus portion of the expansion part 30 is accommodated inside the second locking part 20, thereby reducing the space occupied by the blind lock. Therefore, the telescopic part 30 is used for replacing the original slide bar, and the problems that the slide bar of the original blind plate lock cannot be telescopic, so that the blind plate lock is inconvenient to carry and the space occupied by the slide bar is large are effectively solved.

As shown in fig. 1, the locking assembly 40 includes a plug assembly 41 and a stop assembly 42. The lock core assembly 41 is pivotally connected with the limiting assembly 42, the telescopic part 30 penetrates through the limiting assembly 42, the limiting assembly 42 is provided with a limiting position and a yielding position, when the locking assembly 40 is switched to the locking state from the unlocking state, the lock core assembly 41 drives the limiting assembly 42 to rotate, and the limiting assembly 42 is switched to the limiting position from the yielding position and enables at least one part of the telescopic part 30 to be bent so that the length of the telescopic part 30 cannot be adjusted. With such a configuration, after the first locking portion 10 and the second locking portion 20 respectively engage with the flange and cover the bolt and the nut respectively in the first receiving groove 11 and the second receiving groove 21 and complete the locking thereof, the lock cylinder assembly 41 is driven to rotate by using the unlocking key, and the position limiting assembly 42 is switched from the abdicating position to the position limiting position, so that the telescopic portion 30 cannot be extended, and the first locking portion 10 and the second locking portion 20 cannot be removed from the bolt and the nut.

As shown in fig. 1, 3 and 4, the limiting assembly 42 includes a driving gear 421 and a driven gear 422. The lock core assembly 41 is in driving connection with the transmission gear 421; the driven gear 422 is engaged with the transmission gear 421, a limit column 4221 extending along the thickness direction of the driven gear 422 is arranged on the gear surface of the driven gear 422, and the telescopic part 30 penetrates through the limit column 4221 along the radial direction of the limit column 4221. Through the arrangement, when the unlocking key drives the lock cylinder assembly 41 to rotate, and the limiting assembly 42 is switched to the limiting position from the abdicating position, the lock cylinder assembly 41 can drive the transmission gear 421 to rotate, and drive the driven gear 422 to rotate through the transmission gear 421, and the limiting column 4221 can transmit along with the driven gear 422, so that the part of the telescopic part 30, which is positioned inside the limiting column 4221, can rotate along with the limiting column 4221, and further the telescopic part 30 is bent, so that the part of the telescopic part 30, which penetrates through the limiting column 4221, cannot extend out of the second locking part 20 from the limiting column 4221, that is, the part of the telescopic part 30, which is positioned inside the second locking part 20, cannot extend out of the second locking part 20, and therefore the telescopic part 30 cannot extend out of the second locking part. When the limiting assembly 42 is switched from the limiting position to the abdicating position, the driven gear 422 is driven by the transmission gear 421 to rotate, and the axis of the hole of the limiting portion through which the telescopic portion 30 passes is located on the same straight line with the axis of the part of the telescopic portion 30 located outside the second locking portion 20, at this time, a part of the telescopic portion 30 located inside the second locking portion 20 can extend outside the second locking portion 20 under the action of external force, so that the first locking portion 10 and the second locking portion 20 can be removed from the bolt and the nut, and the bolt and the nut are unlocked.

As shown in fig. 1, 3 and 4, the second lock portion 20 includes a housing 22 and a reel 23. The housing 22 has a second receiving groove 21, and at least a portion of the locking assembly 40 is disposed inside the housing 22; the reel 23 is provided inside the housing 22, the extendable portion 30 is connected to the reel 23, and the reel 23 is rotatable relative to the housing 22 so that the extendable portion 30 can be extended or retracted. By this arrangement, when the position limiting assembly 42 is located at the abdicating position, the telescopic part 30 can be partially wound on the reel 23 by the rotation of the reel 23, so as to realize the contraction of the length of the telescopic part 30, and when the first locking part 10 moves towards the direction away from the second locking part 20 under the action of external force, the part of the telescopic part 30 wound on the reel 23 can be extended out of the second locking part 20. When the position limiting assembly 42 is located at the position limiting position, the part of the telescopic part 30 located outside the second locking part 20 can not enter the second locking part 20 and is wound on the reel 23, and the part of the telescopic part 30 wound on the reel 23 also partially extends out of the second locking part 20.

As shown in fig. 1, 3 and 4, the second locking portion 20 further includes a coil spring 24, one end of the coil spring 24 abuts against the housing 22, the other end of the coil spring 24 abuts against the reel 23, and when the limiting assembly 42 is located at the abdicating position, the coil spring 24 rotates the reel 23 to contract the telescopic portion 30. It should be noted that, when the first locking portion 10 is moved away from the second locking portion 20 by the external force, the coil spring 24 is compressed, and when the external force disappears, the coil spring 24 provides the return force to the reel 23, so that the reel 23 is rotated, and the telescopic portion 30 can enter the inside of the second locking portion 20 and wind onto the reel 23.

It should be noted that the total length of the telescopic part 30 cannot be changed in the present application, and the telescopic part is realized mainly by extending the length wound on the reel 23 or shortening the length wound on the reel 23.

As shown in fig. 1, 3 and 4, the housing 22 includes a main body 221, the main body 221 has a second receiving groove 21, the main body 221 further has a first mounting groove 2211 and a second mounting groove 2212, one end of the limiting assembly 42 extends into the first mounting groove 2211, and one end of the reel 23 extends into the second mounting groove 2212. Can play certain positioning action to spacing subassembly 42 and reel 23 respectively through setting up first mounting groove 2211 and second mounting groove 2212 to can prevent effectively that spacing subassembly 42 and reel 23 from appearing rocking.

As shown in fig. 1, 3 and 4, the bottom of the first mounting groove 2211 has a first positioning column 22111 extending toward the opening of the first mounting groove 2211, and the driven gear 422 is sleeved on the first positioning column 22111; the bottom of the second mounting groove 2212 has a second positioning column 22121 extending toward the opening of the second mounting groove 2212, and one end of the reel 23 is sleeved on the second positioning column 22121. Can play the positioning action to driven gear 422 and reel 23 through setting up first reference column 22111 and second reference column 22121 to make driven gear 422 and reel 23 only can rotate and can not remove, thereby guaranteed the stability of performance of blind plate lock in this application effectively.

Specifically, the first positioning columns 22111 and the second positioning columns 22121 are arranged at intervals along the expansion and contraction direction of the expansion and contraction part 30. By this arrangement, when the position-limiting assembly 42 is located at the abdicating position, it can be effectively ensured that the telescopic part 30 can be wound on the reel 23 under the action of the reel 23 or the part located on the reel 23 can be extended out of the second locking part 20 under the action of external force.

In one embodiment of the present application, as shown in fig. 1-4, the housing 22 further includes a cover 222, the cover 222 covering the housing 22 such that the locking assembly 40 and the reel 23 are disposed between the cover 222 and the housing 22. Through setting up like this, can play the guard action to locking Assembly 40 and reel 23 effectively, make unable direct contact of operating personnel locking Assembly 40 and reel 23, and then guarantee the security performance of blind plate lock.

In an embodiment of the present application, one side of the cover 222 facing the housing 22 has a first receiving cavity 2221 and a second receiving cavity 2222 spaced apart from each other, at least a portion of the plug assembly 41 is disposed in the first receiving cavity 2221, the other end of the limiting assembly 42 is disposed in the second receiving cavity 2222, the second receiving cavity 2222 has a third positioning post 22221 extending toward the housing 22, and the other end of the reel 23 is sleeved on the third positioning post 22221.

Alternatively, the axes of the first receiving groove 11 and the second receiving groove 21 are located on the same straight line.

Specifically, one end of the telescopic part 30 close to the second locking part 20 has a fixing segment 31, and the fixing segment 31 is wound on the reel 23 of the second locking part 20; or the fixed segment 31 is fixedly connected with the reel 23 of the second locking part 20. By doing so, it is ensured that the length of the extendable portion 30 extending out of the second locking portion 20 is maximized, and the extendable portion 30 can still be connected to the reel 23, so that the extendable portion 30 can be wound onto the reel 23 more easily when the extendable portion 30 is required to be extended and retracted.

In one embodiment of the present application, the outer sleeve of the telescoping portion 30 is provided with a protective sleeve made of polycarbonate material. Through setting up like this, can guarantee that the blind plate tool to lock of this application has high impact resistance, wear-resisting, resistant high low temperature performance, adapts to various industry places.

Preferably, the telescoping portion 30 is a steel wire.

In one embodiment of the present application, when the blind plate lock is locked, the first locking portion 10 and the second locking portion 20 are respectively covered on the nut or bolt head at both ends of the flange through the first receiving groove 11 and the second receiving groove 21, and the wire is tightened by the coil spring 24, so that the first locking portion 10 and the second locking portion 20 are respectively attached to both ends of the flange. At this time, the unlocking key is inserted into the lock core assembly 41, the lock core assembly 41 is rotated counterclockwise, the lock core assembly 41 drives the transmission gear 421 to rotate counterclockwise, the transmission gear 421 drives the driven gear 422 to rotate clockwise, so that the driven gear rotates by a certain angle with respect to the limiting post 4221, at this time, the steel wire is twisted under the action of the threading hole of the limiting post 4221, the twisted steel wire is limited and locked, and the steel wire cannot be stretched, meanwhile, since the first accommodating groove of the first locking portion 10 and the second accommodating groove of the second locking portion 20 are just matched with the size of the nut or the bolt head, no shaking space exists between the first locking portion 10 and the second locking portion 20 and the nut or the bolt head, so the first locking portion 10 and the second locking portion 20 are locked on the nut or the bolt head at two ends of the flange through the steel wire.

In an embodiment of the present application, when the blind plate lock is unlocked, the unlocking key is inserted into the lock cylinder assembly 41, the lock cylinder assembly 41 is rotated clockwise, the lock cylinder assembly 41 drives the transmission gear 421 to rotate, the transmission gear 421 drives the driven gear 422 to rotate, so that the axis of the threading hole of the limiting column 4221 on the driven gear 422 is parallel to the axis of the steel wire, the steel wire can freely pass through the threading hole of the limiting column 4221 of the driven gear 422 at this time, the limitation of the steel wire is removed, the first locking portion 10 and the second locking portion 20 can move back to back, the first accommodating groove of the first locking portion 10 and the second accommodating groove of the second locking portion 20 are separated from the nuts or the bolt heads at the two ends of the flange, the blind plate lock can be detached from the flange, and.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problems that the sliding rod of the original blind plate lock cannot be stretched and the blind plate lock is inconvenient to carry and large in occupied space of the sliding rod are effectively solved;

2. the structure is simple, and the carrying is convenient;

3. stable performance and high safety.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.