CN212273335U - Blind plate lock - Google Patents

Abstract

The utility model provides a blind plate lock. The blind plate lock includes: a fixing portion having a first receiving portion for receiving a portion of a member to be fixed; one end of the sliding rod is connected with the fixed part; the movable part is provided with a second accommodating part for accommodating the other part of the part to be fixed, the movable part is connected with one end of the sliding rod, which is far away from the fixed part, and can move along the length direction of the sliding rod so as to adjust the distance between the first accommodating part and the second accommodating part; the movable part of the locking structure is provided with an accommodating cavity, at least one part of the locking structure is arranged in the accommodating cavity, at least one locking groove is arranged in the length direction of the sliding rod, and the locking structure has a locking state and an unlocking state. The utility model provides an among the prior art can't lock the blind plate that is in maintenance state to carry out the problem of maloperation to the blind plate.

Description

Blind plate lock

Technical Field

The utility model relates to a tool to lock equipment field particularly, relates to a blind plate lock.

Background

The blind plate, also called flange lid, mainly used keeps apart the production medium completely, prevents because the trip valve is closed untight, influences production, causes the accident even. The blind plate is generally arranged at the position of a pipe orifice of equipment, in front of and behind a shut-off valve or between two flanges, and the blind plate has good sealing performance and is generally used as a reliable isolation means for a system needing complete isolation. During maintenance, a blind plate is inserted between the two flanges and locked through bolts, so that production media in the pipeline can be completely isolated from a maintenance pipeline region. However, at the present stage, an effective management and control means is lacked for the blind plate in the maintenance state, and the blind plate is frequently detached by mistake by an unknown person, so that a medium flows to a maintenance pipeline area or is leaked to the outside, and property loss and even serious personal safety accidents are caused.

Therefore, the problem that the blind plate in the overhauling state cannot be locked in the prior art so as to carry out misoperation on the blind plate exists.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a blind plate lock to can't lock the blind plate that is in maintenance state among the solution prior art, thereby carry out the problem of maloperation to the blind plate.

In order to achieve the above object, according to an aspect of the present invention, there is provided a blind lock, including: a fixing portion having a first receiving portion for receiving a portion of a member to be fixed; one end of the sliding rod is connected with the fixed part, and a plurality of locking grooves are formed in the length direction of the sliding rod; the movable part is provided with a second accommodating part for accommodating the other part of the part to be fixed, one end of the sliding rod, which is far away from the fixed part, penetrates through the movable part, and the movable part can move along the length direction of the sliding rod so as to adjust the distance between the first accommodating part and the second accommodating part; the movable part is provided with a containing cavity, at least one part of the locking structure is arranged in the containing cavity, the locking structure is provided with a locking state and an unlocking state, the locking structure comprises a locking component, and the locking component can enter or exit the locking groove; when the locking structure is in a locking state, the locking component extends into the locking groove and cannot be withdrawn from the locking groove, and when the locking structure is switched from the locking state to an unlocking state, the part of the locking component extending into the locking groove can be withdrawn or enter different locking grooves, so that the movable part can move along the sliding rod.

Further, the latching structure further comprises: the movable part is also provided with a key inserting opening communicated with the accommodating cavity, the lock cylinder assembly is arranged in the accommodating cavity, and the key inserting end of the lock cylinder assembly faces the key inserting opening; the limiting assembly is arranged on one side, away from the key socket, of the lock cylinder assembly, the limiting assembly is provided with a limiting position and a stepping position, the lock cylinder assembly is in driving connection with the limiting assembly so as to drive the limiting assembly to switch between the limiting position and the stepping position, and the locking assembly is arranged on one side, away from the lock cylinder assembly, of the limiting assembly; when the limiting component is located at the limiting position, the locking component extends into the inner part of the locking groove and cannot be withdrawn from the locking groove, and when the limiting component is located at the abdicating position, the part of the locking component extending into the inner part of the locking groove can be withdrawn or enter different locking grooves.

Further, after the limiting component is switched from the limiting position to the yielding position, the locking component only exits or enters different locking grooves after being pressed by the movement of the movable part.

Furthermore, the movement directions of the limiting assembly and the locking assembly are mutually vertical; and/or the movement direction of the locking component is perpendicular to the length direction of the sliding rod.

Further, spacing subassembly includes: the connecting piece is provided with a connecting groove, the lock cylinder assembly can extend into the connecting groove and drive the connecting piece to rotate, and the connecting piece is also provided with a driving head; the limiting part is provided with a driving groove, the driving head extends into the driving groove, and when the lock core assembly drives the connecting piece to rotate, the driving head drives the limiting part to switch between the limiting position and the yielding position.

Further, the drive head is eccentrically disposed on the connecting piece.

Furthermore, the connecting piece is also provided with a limiting bulge, and the inner side wall of the accommodating cavity is provided with a limiting structure matched with the limiting bulge so as to limit the rotation angle of the connecting piece; and/or the limiting component also comprises a limiting rod, and the limiting part is also provided with a stopping step matched with the limiting rod so as to prevent the limiting part from rotating.

Further, the latch assembly includes: one end of the locking pin, which is far away from the limiting component, is provided with a pressing surface; the ball is abutted against the extrusion surface, part of the ball can enter or exit the locking groove, and when the ball exits the locking groove, the ball extrudes the extrusion surface; and one end of the resetting piece is abutted with the latching pin, and the other end of the resetting piece is abutted with the movable part so as to provide resetting force moving towards the latching groove for the latching pin.

Further, the latch assembly includes: the end, far away from the limiting component, of the locking pin is provided with an arc-shaped bulge, and at least one part of the arc-shaped bulge can enter or exit the locking groove; and one end of the resetting piece is abutted with the latching pin, and the other end of the resetting piece is abutted with the movable part so as to provide resetting force moving towards the latching groove for the latching pin.

Furthermore, the blind plate lock also comprises a dustproof cover which is arranged at the key insertion hole of the movable part.

Furthermore, a plurality of locking grooves are sequentially arranged along the length direction of the sliding rod; and/or the locking slot is an arc-shaped slot.

Further, the blind plate lock also comprises a wireless code chip, and the wireless code chip is arranged between the dustproof cover and the locking structure.

Further, the blind lock further comprises a detachable fastener detachably disposed on the fixed portion to keep the fixed portion connected with the slide bar.

Furthermore, the fixed part is provided with a slot, one end of the slide rod extends into the slot, the part of the slide rod extending into the slot is provided with a first fixed hole, the fixed part is also provided with a second fixed hole communicated with the slot, and the detachable fastener penetrates through the second fixed hole to extend into the first fixed hole so as to fix the slide rod on the fixed part.

Further, the blind lock further includes a removal-preventing cap provided on the second fixing hole to seal the removable fastener inside the fixing portion.

Furthermore, the slide bar is provided with at least one limiting hole, the blind plate lock is also provided with a limiting pin matched with the limiting hole, and at least one part of the limiting pin is matched with the movable part in a stopping way, so that the movable part is stopped by the limiting pin.

Further, the first and/or second receiving portion is a stepped bore.

Use the technical scheme of the utility model, blind plate lock in this application includes fixed part, slide bar, movable part and shutting structure. The fixing part is provided with a first accommodating part for accommodating a part of the piece to be fixed; one end of the sliding rod is connected with the fixed part, and a plurality of locking grooves are formed in the length direction of the sliding rod; the movable part is provided with a second accommodating part for accommodating the other part of the part to be fixed, one end of the sliding rod, which is far away from the fixed part, penetrates through the movable part, and the movable part can move along the length direction of the sliding rod so as to adjust the distance between the first accommodating part and the second accommodating part; the movable part is provided with a containing cavity, at least one part of the locking structure is arranged in the containing cavity, the locking structure is provided with a locking state and an unlocking state, the locking structure comprises a locking component, and the locking component can enter or exit the locking groove; when the locking structure is in a locking state, the locking component extends into the locking groove and cannot be withdrawn from the locking groove, and when the locking structure is switched from the locking state to an unlocking state, the part of the locking component extending into the locking groove can be withdrawn or enter different locking grooves, so that the movable part can move along the sliding rod.

When the blind plate lock with the structure is used, the blind plate lock is firstly installed on the to-be-fixed piece through the fixing part, and in the installation process, the first accommodating part is sleeved on the to-be-fixed piece, so that the locking of one end of the to-be-fixed piece is realized. And the movable part is driven to move along the slide bar, so that the distance between the first accommodating part and the second accommodating part can be adjusted according to different lengths of the to-be-fixed parts, the second accommodating part is sleeved at the other end of the to-be-fixed part, the locking structure is adjusted to be in a locking state, locking between the movable part and the slide bar is realized, locking of the to-be-fixed part is realized, and the to-be-fixed part can be effectively prevented from being taken out. Therefore, the blind plate lock effectively solves the problem that the blind plate in the overhauling state cannot be locked in the prior art, so that misoperation is carried out on the blind plate.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, 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 shows an exploded view of a blind plate lock according to an embodiment of the present invention;

FIG. 2 is a schematic view of the blind lock of the present application in a locked position with respect to a member to be fastened;

FIG. 3 is a schematic diagram illustrating the position of a blind lock according to the present application when unlocking a member to be fastened;

FIG. 4 illustrates a cross-sectional view of the blind lock of the present application locking the member to be secured;

FIG. 5 illustrates a cross-sectional view of a blind lock of the present application unlocking a member to be secured;

FIG. 6 is a schematic diagram illustrating the position relationship between the position limiting assembly and the locking assembly when the position limiting assembly of the locking structure of the blind plate lock of the present application is in the position limiting position and the locking assembly is in the locking position;

fig. 7 is a schematic diagram illustrating a position relationship between a limiting assembly and a locking assembly when the limiting assembly of the locking structure of the blind plate lock in the application is in a yield position and the locking assembly is in an unlocked position;

FIG. 8 is a schematic view showing the positional relationship between the tamper cap and the releasable fastener of the blind panel lock of the present application.

Wherein the figures include the following reference numerals:

10. a fixed portion; 11. a first receptacle portion; 12. a slot; 13. a second fixing hole; 20. fixing the part; 30. a slide bar; 31. a locking groove; 32. a first fixing hole; 33. a limiting hole; 40. a movable portion; 41. a second receptacle portion; 42. a through hole; 43. an accommodating chamber; 50. a latching structure; 51. a plug assembly; 52. a limiting component; 521. a connecting member; 5211. connecting grooves; 5212. a drive head; 5213. a limiting bulge; 522. a limiting member; 5221. a drive slot; 5222. a stopping step; 523. a limiting rod; 53. a locking assembly; 531. a locking pin; 5311. extruding surface; 532. a ball bearing; 533. a reset member; 60. a dust cover; 70. a wireless chip; 80. a removable fastener; 90. a tamper cap; 100. and a limiting pin.

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 accompanying drawings in conjunction with embodiments.

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 application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; 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 problem that the blind plate in the overhauling state can not be locked in the prior art, and therefore misoperation is carried out on the blind plate, the blind plate lock is provided.

It should be noted that the blind plate lock in the present application is mainly used for locking the bolt and nut of the blind plate. Meanwhile, the blind plate lock in the application can also be applied to occasions needing to lock other objects, wherein the other objects can be rod-shaped objects and the like.

As shown in fig. 1 to 8, the blind latch of the present application includes a fixed portion 10, a slide bar 30, a movable portion 40, and a latch structure 50. The fixing portion 10 has a first accommodating portion 11 for accommodating a part of the member to be fixed 20; one end of the slide bar 30 is connected to the fixed portion 10; the movable portion 40 has a second accommodating portion 41 for accommodating another portion of the member to be fixed 20, one end of the slide bar 30 away from the fixed portion 10 passes through the movable portion 40, and the movable portion 40 can move in the length direction of the slide bar 30 to adjust the distance between the first accommodating portion 11 and the second accommodating portion 41; the movable part 40 is provided with a containing cavity 43, at least one part of a locking structure 50 is arranged in the containing cavity 43, a plurality of locking grooves 31 are arranged in the length direction of the slide rod 30, the locking structure 50 comprises a lock cylinder component 51, a limiting component 52 and a locking component 53, the limiting component 52 is provided with a limiting position and a yielding position, the lock cylinder component 51 is in driving connection with the limiting component 52 so as to drive the limiting component 52 to switch between the limiting position and the yielding position, the locking component 53 is arranged on one side of the limiting component 52 away from the lock cylinder component 51, and the locking component 53 can enter or exit the locking grooves 31; when the locking structure 50 is in the locked state, the limiting component 52 is in the limiting position, the locking component 53 extends into the locking groove 31 and cannot be withdrawn from the locking groove 31, when the locking structure 50 is switched from the locked state to the unlocked state, the limiting component 52 is switched from the limiting position to the abdicating position, and the part of the locking component 53 extending into the locking groove 31 can be withdrawn or enter into a different locking groove 31, so that the movable part 40 can move along the slide rod 30.

When the blind plate lock with the structure is used, the blind plate lock is firstly installed on the to-be-fixed piece 20 through the fixing part 10, and in the installation process, the first accommodating part 11 is sleeved on the to-be-fixed piece 20, so that one end of the to-be-fixed piece 20 is locked. And the movable part 40 is driven to move along the slide bar 30, so that the distance between the first accommodating part 11 and the second accommodating part 41 can be adjusted according to different lengths of the to-be-fixed piece 20, the second accommodating part 41 is sleeved at the other end of the to-be-fixed piece 20, and the locking structure 50 is adjusted to be in a locking state, so that the movable part 40 and the slide bar 30 are locked, and the to-be-fixed piece 20 can be effectively prevented from being taken out. Therefore, the blind plate lock effectively solves the problem that the blind plate in the overhauling state cannot be locked in the prior art, so that misoperation is carried out on the blind plate.

As shown in fig. 1, 4 and 5, the latching structure 50 includes a plug assembly 51, a stop assembly 52 and a latching assembly 53. The movable portion 40 also has a key insertion opening communicating with the accommodating chamber 43, the plug assembly 51 is disposed inside the accommodating chamber 43, and the key insertion end of the plug assembly 51 faces the key insertion opening; the limiting assembly 52 is arranged on one side, away from the key socket, of the lock cylinder assembly 51, the limiting assembly 52 is provided with a limiting position and a yielding position, and the lock cylinder assembly 51 is in driving connection with the limiting assembly 52 so as to drive the limiting assembly 52 to switch between the limiting position and the yielding position; the locking assembly 53 is arranged on one side of the limiting assembly 52 far away from the lock cylinder assembly 51, the locking assembly 53 is provided with a locking position and an unlocking position, when the limiting assembly 52 is in the limiting position, the locking assembly 53 is kept in the locking position, and after the limiting assembly 52 is switched from the limiting position to the yielding position, the locking assembly 53 can be switched between the locking position and the unlocking position.

Specifically, when the limiting member 52 is switched from the limiting position to the receding position, the latching member 53 exits or enters the different latching groove 31 only after being pressed by the movement of the movable portion 40; when the locking assembly 53 is in the unlocking position, the limiting assembly 52 is in the abdicating position; when the locking assembly 53 is switched from the unlocking position to the locking position, the limiting assembly 52 is switched from the abdicating position to the limiting position by the lock cylinder assembly 51.

With this arrangement, when the movable portion 40 moves along the slide bar 30 to adjust the distance between the movable portion 40 and the fixed portion 10 as required, the plug assembly 51 can be unlocked by a key and the plug assembly 51 can be driven to rotate, so that the plug assembly 51 can drive the spacing assembly 52 to move, thereby enabling the spacing assembly 52 to be switched from the spacing position to the abdicating position, and after the spacing assembly 52 moves to the abdicating position, the locking assembly 53 can be switched between the locking position and the unlocking position in the process of pushing the movable portion 40 and moving the movable portion 40 along the slide bar 30. When the movable portion 40 moves to the set position, the locking assembly 53 is switched to the locking position, and at this time, the key is rotated, so that the lock cylinder assembly 51 drives the limiting assembly 52 to move, the limiting assembly 52 is switched to the limiting position from the abdicating position to limit the locking assembly 53, so that the locking assembly 53 can be kept at the locking position, and the movable portion 40 and the slide rod 30 are kept locked.

Optionally, the movement directions of the limiting component 52 and the locking component 53 are perpendicular to each other.

Optionally, the direction of movement of the locking assembly 53 is perpendicular to the length direction of the slide bar 30.

By means of the arrangement, the stability of mutual matching between the limiting component 52 and the locking component 53 can be effectively ensured, and therefore the performance failure of the locking structure 50 can be effectively prevented.

As shown in fig. 4 to 7, the limiting assembly 52 includes a connecting member 521 and a limiting member 522. The coupling member 521 has a connecting groove 5211, the plug assembly 51 can extend into the connecting groove 5211 and drive the coupling member 521 to rotate, and the coupling member 521 also has a driving head 5212; the retainer 522 has a driving slot 5221, and the driving head 5212 extends into the driving slot 5221, so that the driving head 5212 drives the retainer 522 to switch between the retaining position and the abdicating position when the plug assembly 51 drives the connecting member 521 to rotate. By so doing, the plug assembly 51 can be inserted into the connecting groove 5211 to maintain the connection with the spacing assembly 52, and can drive the spacing assembly 52. Furthermore, the space occupied by the position-limiting component 52 can be smaller by the cooperation between the driving head 5212 and the driving groove 5221, and the overall structure of the locking structure 50 can be more compact.

Specifically, the drive head 5212 is eccentrically disposed on the coupling member 521. Through the arrangement, the lock cylinder assembly 51 can be ensured to drive the limiting member 522 to move through the driving head 5212 in the process of driving the connecting member 521 to rotate, so that the situation that the connecting member 521 idles and the limiting member 522 does not move can be avoided.

Of course, in addition to the eccentric arrangement of the driving head 5212 on the connecting member 521, the driving head 5212 may be further configured to be a special-shaped structure as long as it is ensured that the connecting member 521 can drive the limiting member 522 to move without idling in the rotating process. Also, the driving head 5212 may be disposed at the center of the link 521 at this time.

As shown in fig. 4 to 7, the connecting member 521 further has a limiting protrusion 5213, and the inner sidewall of the accommodating cavity 43 has a limiting structure engaged with the limiting protrusion 5213 to limit the rotation angle of the connecting member 521. Through setting up like this, can inject the turned angle of lock core subassembly 51 and connecting piece 521 simultaneously to not only can increase the feel that the unblock targets in place, but also can guarantee that the motion range of locating part 522 can not exceed spacing position of spacing subassembly 52 and let the distance between the position, thereby can guarantee the stability of spacing subassembly 52 operation.

Specifically, the limiting structure is a limiting groove formed in the inner side wall of the accommodating cavity 43, and when the connecting member 521 rotates, the limiting protrusion 5213 slides in the limiting groove, and two ends of the limiting groove in the sliding direction limit and stop the limiting protrusion 5213.

In one embodiment of the present application, the limiting protrusion 5213 is in a fan-shaped structure, and the limiting groove is a fan-shaped groove. Moreover, the radian of the fan-shaped groove is larger than that of the fan-shaped structure.

Optionally, the direction of projection of the stop protrusion 5213 is perpendicular to the direction of projection of the drive head 5212. With this arrangement, when the limit protrusion 5213 performs the limit stop with the limit groove, it can be ensured that the driving head 5212 does not continue to rotate under the action of the inertia force, so that the sensitivity of the limit component 52 can be ensured.

As shown in fig. 4 to 7, the limiting component 52 further includes a limiting rod 523, and the limiting member 522 further has a stopping step 5222 engaged with the limiting rod 523 to prevent the limiting member 522 from rotating. Through setting up like this, can make the gag lever post 523 carry out circumference spacing to locating part 522 to at the in-process that connecting piece 521 drove the motion of locating part 522, avoid locating part 522 to appear rotating.

In one embodiment of the present application, the stopping step 5222 is disposed at one end of the stopper 522 close to the locking member 53 and protrudes toward the locking member 53.

Optionally, the length direction of the limiting rod 523 is perpendicular to the movement direction of the limiting member 522.

As shown in fig. 4-7, in one embodiment of the present application, latch assembly 53 includes a latch pin 531, a ball 532, and a reset member 533. The end of the locking pin 531 remote from the stop component 52 has a pressing surface 5311; the ball 532 abuts against the pressing surface 5311, a part of the ball 532 can enter or exit the locking groove 31, when the locking component 53 is located at the locking position, a part of the ball 532 can extend into the locking groove 31 to lock the movable part 40 and the slide rod 30, and when the limiting component 52 is switched from the limiting position to the abdicating position, the ball 532 exits the locking groove 31 and presses the pressing surface 5311 under the action of external force, so that the locking component 53 is switched from the locking position to the unlocking position; one end of the restoring member 533 abuts the latching pin 531, and the other end of the restoring member 533 abuts the movable portion 40 to provide the latching pin 531 with a restoring force moving toward the latching groove 31. It is noted that, in order to ensure that the ball 532 can exit the latching groove 31 by the pressing action of the movable portion 40, it is necessary to provide the latching groove 31 as an arc-shaped groove, and the groove surface of the arc-shaped groove matches the surface of the ball 532.

Preferably, the latching groove 31 has a hemispherical shape.

Also, it should be noted that the balls 532 may be steel balls in this embodiment.

In one embodiment of the present application, not shown, latch assembly 53 includes a latch pin 531 and a reset member 533. The end of the locking pin 531 away from the position limiting component 52 has an arc-shaped protrusion, when the locking component 53 is located at the locking position, at least a part of the arc-shaped protrusion extends into the locking groove 31, and when the locking component 53 is switched from the locking position to the unlocking position, the arc-shaped protrusion exits from the locking groove 31; one end of the restoring member 533 abuts the latching pin 531, and the other end of the restoring member 533 abuts the movable portion 40 to provide the latching pin 531 with a restoring force moving toward the latching groove 31.

As shown in fig. 1 to 5, the blind lock further includes a dust cover 60, and the dust cover 60 is provided at the key insertion hole of the movable portion 40. With this arrangement, when the key is not used to unlock the plug assembly 51, dust can be prevented from entering the inside of the locking structure 50 by the dust cap 60, so that the usability of the locking structure 50 can be extended.

In one embodiment of the present application, a plurality of latching grooves 31 are sequentially provided along the length direction of the slide bar 30. It should be noted that, in the present application, the moving range of the movable portion 40 needs to be limited to the portion of the slide bar 30 having the locking groove 31, so that it is ensured that the locking structure 50 can lock the movable portion 40 and the slide bar 30.

Therefore, when the slide bar 30 has only one locking groove 31, the blind lock of the present application can still be used, but the blind lock can lock only a specific length of the member to be fastened 20, and cannot lock a plurality of lengths of the members to be fastened 20. Therefore, by providing a plurality of locking grooves 31, it is possible to lock the blind lock to various lengths of the member to be fastened 20.

As shown in fig. 1, the blind latch further includes a wireless chip 70, the wireless chip 70 being disposed between the dust cover 60 and the latch structure 50. Through the wireless code sheet 70, the key for unlocking can be identified and authorized, and therefore the safety performance of the blind plate lock can be improved.

As shown in fig. 5, the movable portion 40 has a through hole 42, the movable portion 40 is sleeved on the sliding rod 30 through the through hole 42, and the through hole 42 is communicated with the accommodating cavity 43. By this arrangement, when the locking structure 50 is switched from the unlocked state to the locked state, the ball 532 of the locking structure 50 can enter the through hole 42 from the accommodating cavity 43, thereby achieving locking of the movable portion 40 and the slide bar 30.

As shown in fig. 1, 4, 5 and 8, the blind latch further comprises a detachable fastener 80, the detachable fastener 80 being detachably provided on the fixed portion 10 to keep the fixed portion 10 connected with the slide bar 30. It is noted that the slider bar 30 can be separated from the fixed portion 10 when and when the removable fastener 80 is detached from the fixed portion 10. The fixing portion 10 has a slot 12, one end of the slide bar 30 extends into the slot 12, a portion of the slide bar 30 extending into the slot 12 has a first fixing hole 32, the fixing portion 10 further has a second fixing hole 13 communicating with the slot 12, and the detachable fastener 80 extends into the first fixing hole 32 through the second fixing hole 13 to fix the slide bar 30 to the fixing portion 10. By so doing, it is possible to effectively prevent the disconnection between the slide bar 30 and the fixed portion 10, thereby effectively ensuring the usability of the safety latch.

As shown in fig. 8, the blind lock further includes a removal-preventing cap 90, and the removal-preventing cap 90 is placed over the second fixing hole 13 to seal the removable fastener 80 inside the fixing portion 10. With this arrangement, when the blind lock needs to be urgently unlocked, the removal-preventing cap 90 can be broken, so that the removable fastener 80 can be removed, and the connection between the slide bar 30 and the fixed portion 10 can be released, thereby releasing the blind lock from locking the fixed member 20.

In one particular embodiment of the present application, the tamper cap 90 is made of a plastic material.

Specifically, the slide rod 30 is provided with at least one limiting hole 33, the blind plate lock further has a limiting pin 100 engaged with the limiting hole 33, and at least a portion of the limiting pin 100 is engaged with the movable portion 40 to stop the movable portion 40 by the limiting pin 100. By so arranging, the sliding distance of the movable portion 40 on the slide bar 30 can be effectively defined. Also, in an embodiment of the present application, the two limiting holes 33 are provided, and the two limiting holes 33 are disposed at both sides of two locking grooves at both ends among the plurality of locking grooves.

Optionally, the first receptacle 11 is a stepped bore.

Optionally, the second receiving portion 41 is a stepped hole.

In one particular embodiment of the application itself, the first and second housing portions 11, 41 each have a large hole section and a small hole section, and the large hole section of the first housing portion 11 and the large hole section of the second housing portion 41 are disposed close to each other. By the arrangement, the to-be-fixed piece 20 can be locked through the large hole section, and when the part of the to-be-fixed piece extending out of the large hole section is too long, the too long part can be avoided and protected through the small hole section.

When the blind plate lock in the present application is unlocked, an operator rotates to open the dust cover 60, the keyhole of the key assembly 51 is exposed, a key is inserted into the keyhole of the key assembly 51, the key reads the code value of the wireless code sheet 70, after the verification is passed, the operator rotates the key, the key assembly 51 drives the limiting assembly 52 to move, the limiting assembly 52 is switched to the abdicating position from the limiting position, at this time, the movable part 40 is moved along the sliding rod 30 towards the direction far away from the fixed part 10, the ball 532 exits the locking groove 31 and pushes the locking pin 531 to move towards the direction far away from the locking groove 31 against the elastic force of the resetting piece 533, along with the movement of the movable part 40, the ball 532 enters another locking groove 31 after exiting one locking groove 31, and the locking assembly 53 is switched between the locking position and the unlocking position until the movable part 40 stops moving; at this time, the operator can take out both ends of the member to be fixed 20 from the first accommodating portion 11 and the second accommodating portion 41, respectively, so that the fixing member for fixing the blind plate can be operated, and the blind plate can be operated to complete the whole unlocking process.

In closing the blind lock of the present application, the operator rotates the dust cap 60 to open the locking hole of the cylinder assembly 51, and moves the movable portion 40 along the slide rod 30 in a direction away from the fixed portion 10 to have a sufficient operating space for the fixing member 20. At this time, the ball 532 is disengaged from the latching grooves 31 and pushes the latching pin 531 to move in a direction away from the latching grooves 31 against the elastic force of the restoring member 533, and the ball 532 moves between exiting one latching groove 31 and entering the other latching groove 31 as the movable part 40 moves until the movable part 40 stops moving, and the ball 532 falls into one of the latching grooves 31; meanwhile, the latching pin 531 also moves up and down with the up and down movement of the ball 532, and when the ball 532 finally falls into the latching groove 31, the latching pin 531 returns to the latching position under the elastic force of the restoring member 533; when the movable portion 40 moves to a distance between the first accommodating portion 11 and the second accommodating portion 41 sufficient to accommodate both ends of the member to be fixed 20, the movable portion 40 stops moving; at this moment, the operator inserts the key in the lockhole of lock core subassembly 51, the code value of wireless code piece 70 is read to the key, after the verification passes, the operator reverse rotation key, lock core subassembly 51 drives locating part 522 and switches to limiting position by the position of stepping down to make shutting subassembly 53 keep at the shutting position, and then lock ball 532 in this shutting groove 31, make movable assembly and slide bar 30 keep locking, thereby the blind plate lock can't be taken off from treating the both ends of stationary part 20, avoided irrelevant personnel to the maloperation of the stationary part of locking the blind plate, accomplish whole shutting process.

When an emergency accident occurs and the blind plate lock needs to be disassembled emergently, or when the blind plate lock fails to be unlocked due to mechanical failure, the anti-disassembly cap 90 is broken through by using a sharp tool such as a screwdriver, and after the anti-disassembly cap 90 is removed, the detachable fastener 80 is removed from the fixing part 10, so that the fixing part 10 is separated from the slide bar 30, and both ends of the member to be fixed 20 are taken out from the first accommodating part 11 and the second accommodating part 41 respectively, thereby completing the whole emergency unlocking operation process.

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

1. the problem that the blind plate in the overhauling state cannot be locked in the prior art so that the blind plate is operated by mistake is effectively solved;

2. the structure is simple, and the operation is easy;

3. the safety is strong.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to 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.

Claims (17)

1. A blind latch comprising:

a fixing portion (10), the fixing portion (10) having a first receiving portion (11) for receiving a portion of a member to be fixed (20);

the sliding rod (30), one end of the sliding rod (30) is connected with the fixed part (10), and a plurality of locking grooves (31) are formed in the length direction of the sliding rod (30);

a movable part (40), wherein the movable part (40) is provided with a second accommodating part (41) for accommodating another part of the piece to be fixed (20), one end of the slide rod (30) far away from the fixed part (10) penetrates through the movable part (40), and the movable part (40) can move along the length direction of the slide rod (30) to adjust the distance between the first accommodating part (11) and the second accommodating part (41);

a latching structure (50), the movable portion (40) having a receiving cavity (43), at least a portion of the latching structure (50) being disposed within the receiving cavity (43), the latching structure (50) having a latched state and an unlatched state, the latching structure (50) including a latching component (53), and the latching component (53) being capable of entering or exiting the latching slot (31);

when the locking structure (50) is in the locking state, the locking component (53) extends into the locking groove (31) and cannot be withdrawn from the locking groove (31), and when the locking structure (50) is switched from the locking state to the unlocking state, the part of the locking component (53) extending into the locking groove (31) can be withdrawn or enter different locking grooves (31) so that the movable part (40) can move along the slide rod (30).

2. The blind latch of claim 1 wherein said latch structure (50) further comprises:

a plug assembly (51), said movable part (40) further having a key insertion opening communicating with said accommodation chamber (43), said plug assembly (51) being disposed inside said accommodation chamber (43) with a key insertion end of said plug assembly (51) facing said key insertion opening;

the limiting assembly (52), the limiting assembly (52) is arranged on one side, away from the key socket, of the lock cylinder assembly (51), the limiting assembly (52) is provided with a limiting position and a yielding position, the lock cylinder assembly (51) is in driving connection with the limiting assembly (52) so as to drive the limiting assembly (52) to switch between the limiting position and the yielding position, and the locking assembly (53) is arranged on one side, away from the lock cylinder assembly (51), of the limiting assembly (52); when the limiting component (52) is located at the limiting position, the locking component (53) extends into the locking groove (31) and cannot be withdrawn from the locking groove (31), and when the limiting component (52) is located at the abdicating position, the part of the locking component (53) extending into the locking groove (31) can be withdrawn or enter different locking grooves (31).

3. Blind lock according to claim 2, characterized in that the blocking element (53) only exits or enters the different blocking groove (31) when forced by the movement of the movable part (40) after the stop element (52) has been switched from the stop position to the run-out position.

4. The blind latch of claim 2 wherein,

the movement directions of the limiting assembly (52) and the locking assembly (53) are mutually perpendicular; and/or

The movement direction of the locking component (53) is perpendicular to the length direction of the sliding rod (30).

5. The blind latch of claim 2 wherein the stop assembly (52) comprises:

a connecting member (521), wherein the connecting member (521) is provided with a connecting groove (5211), the lock cylinder assembly (51) can extend into the connecting groove (5211) and drive the connecting member (521) to rotate, and the connecting member (521) is further provided with a driving head (5212);

locating part (522), locating part (522) have drive groove (5221), drive head (5212) stretch into drive groove (5221), work as lock core subassembly (51) drive connecting piece (521) when rotating, drive head (5212) drive locating part (522) are in spacing position with switch between the position of stepping down.

6. The blind plate lock according to claim 5, characterized in that the drive head (5212) is eccentrically arranged on the connecting piece (521).

7. The blind panel lock of claim 5,

the connecting piece (521) is also provided with a limiting protrusion (5213), and the inner side wall of the accommodating cavity (43) is provided with a limiting structure matched with the limiting protrusion (5213) so as to limit the rotating angle of the connecting piece (521); and/or

The limiting component (52) further comprises a limiting rod (523), and the limiting member (522) further comprises a stopping step (5222) matched with the limiting rod (523) to prevent the limiting member (522) from rotating.

8. The blind latch according to claim 2 wherein said latch assembly (53) comprises:

a latching pin (531), wherein one end of the latching pin (531) far away from the limiting component (52) is provided with a pressing surface (5311);

a ball (532), the ball (532) abutting the pressing surface (5311), and a portion of the ball (532) being able to enter or exit the latching groove (31), the ball (532) pressing the pressing surface (5311) when the ball (532) exits the latching groove (31);

a reset member (533), one end of the reset member (533) abutting against the latching pin (531), the other end of the reset member (533) abutting against the movable portion (40), to provide the latching pin (531) with a reset force moving towards the latching groove (31).

9. The blind latch according to claim 2 wherein said latch assembly (53) comprises:

a latching pin (531), wherein one end of the latching pin (531) far away from the limiting component (52) is provided with an arc-shaped bulge, and at least one part of the arc-shaped bulge can enter or exit the latching groove (31);

a reset member (533), one end of the reset member (533) abutting against the latching pin (531), the other end of the reset member (533) abutting against the movable portion (40), to provide the latching pin (531) with a reset force moving towards the latching groove (31).

10. The blind lock according to any of claims 1 to 9, further comprising a dust cover (60), said dust cover (60) covering a key receptacle provided in said movable part (40).

11. The blind latch of any one of claims 1 to 9,

the locking grooves (31) are sequentially arranged along the length direction of the sliding rod (30); and/or

The locking groove (31) is an arc-shaped groove.

12. The blind latch according to any of claims 1 to 9 further comprising a wireless chip (70), the wireless chip (70) being disposed between a dust cover (60) and the latch structure (50).

13. The blind latch according to any of claims 1 to 9, further comprising a detachable fastener (80), said detachable fastener (80) being detachably disposed on said stationary portion (10) to maintain said stationary portion (10) in connection with said slider bar (30).

14. The blind lock according to claim 13, characterized in that the fixing portion (10) has a slot (12), one end of the slide rod (30) extends into the slot (12), and the portion of the slide rod (30) extending into the slot (12) has a first fixing hole (32), the fixing portion (10) further having a second fixing hole (13) communicating with the slot (12), the detachable fastener (80) extending through the second fixing hole (13) into the first fixing hole (32) to fix the slide rod (30) to the fixing portion (10).

15. The blind plate lock according to claim 14, further comprising a tamper cap (90), the tamper cap (90) covering the second fixing hole (13) to seal the detachable fastener (80) inside the fixing portion (10).

16. The blind lock according to any of claims 1 to 9, characterized in that at least one limiting hole (33) is provided on the slide bar (30), and the blind lock further has a limiting pin (100) engaged with the limiting hole (33), at least a part of the limiting pin (100) being in stop engagement with the movable part (40) such that the limiting pin (100) stops the movable part (40).

17. The blind lock according to any of claims 1 to 9, characterized in that the first receptacle (11) and/or the second receptacle (41) is a stepped bore.

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