CN111663857B - Passive lock with antitheft function - Google Patents

Abstract

The present invention provides a passive lock with an anti-theft function, comprising a housing, a bolt hole is provided on the housing for the main bolt of the active lock to be inserted, and a sky lock and a ground lock, wherein the sky lock and the ground lock perform locking or unlocking movements synchronously, a locking groove is provided on the ground lock, a linkage mechanism and a rotating connector are provided inside the housing, the rotating connector is connected to the handle of the passive lock and controls the sky lock and the ground lock to perform locking or unlocking movements, the linkage mechanism comprises a locking block, after the sky lock and the ground lock complete the locking movement, the main bolt is inserted into the bolt hole and then drives the linkage mechanism, so that the locking block moves to be connected with the locking groove, so that the ground lock and the sky lock cannot move. The sky lock and the ground lock in the present invention are locked when the active door is closed, and the bolt of the sky lock and the ground lock cannot be retracted, so the safety is high and the anti-theft effect is good.

Description

A passive lock with anti-theft function

Technical Field

The invention belongs to the technical field of locks, and in particular relates to a passive lock with an anti-theft function.

Background Art

A double door, such as a residential entrance door, has an active door (a door used for regular entry and exit) and a passive door (usually fixed, but can be opened if necessary). The passive lock on the passive door usually includes an upper latch and a lower latch (i.e., a lock tongue of a floor lock) that extend into the top or bottom of the door frame to form a stable connection. Common locking elements, such as a deadbolt and a bolt (or a lock tongue), are provided on the active lock of the active door and extend into the passive lock to secure the double door when locked.

However, the traditional passive lock has a lack of locking function and has a poor anti-theft effect.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a passive lock with anti-theft function. The top and bottom locks are locked when the active door is closed, and the lock tongue of the top and bottom locks cannot be retracted, which has high safety and good anti-theft effect.

The technical solution adopted by the present invention to solve its technical problem is:

A passive lock with anti-theft function comprises a housing, and a lock tongue hole is arranged on the housing for the main lock tongue of the active lock to be inserted;

It also includes a sky lock and a ground lock, wherein the sky lock and the ground lock perform locking or unlocking movements synchronously, and a locking groove is provided on the ground lock;

A linkage mechanism and a rotating connector are provided inside the shell, the rotating connector is connected to the handle of the passive lock and controls the sky lock and the ground lock to perform locking or unlocking movements, the linkage mechanism includes a locking block, after the sky lock and the ground lock complete the locking movement, the main lock tongue is inserted into the lock tongue hole and drives the linkage mechanism, so that the locking block moves to be connected with the locking groove, so that the ground lock and the sky lock cannot move.

Preferably, the linkage mechanism also includes a first transmission rod slidably arranged in the shell, one end of the first transmission rod extends into the lock tongue hole, the locking block is slidably connected to the first transmission rod, and an elastic member is arranged on the locking block. After the sky lock and the ground lock complete the locking movement, the elastic member drives the locking block to move with the sliding of the first transmission rod until it is clamped and connected with the locking groove.

Preferably, the first transmission rod slides linearly in a direction away from the lock tongue hole, a sliding groove is arranged on the first transmission rod, and the sliding groove is sequentially segmented along the sliding direction of the first transmission rod to provide a first sliding section, a second sliding section, and a third sliding section that are connected, the first sliding section and the third sliding section are both horizontally arranged, and the horizontal plane of the first sliding section is higher than the horizontal plane of the third sliding section, the second sliding section is inclined, and the first sliding section, the second sliding section, and the third sliding section sequentially slide under the locking block during the insertion process of the main lock tongue;

The locking block is arranged inside the housing and is fixed in the horizontal direction, and the elastic member is vertically arranged between the locking block and the housing;

After the sky lock and the ground lock complete the locking movement, the locking groove is located below the locking block, and after the main lock tongue is inserted into the lock tongue hole, the elastic member drives the locking block to move downward to be engaged with the locking groove.

Preferably, the linkage mechanism also includes a second transmission rod, a first return spring is provided at the other end of the first transmission rod, and a receiving groove is provided on the second transmission rod corresponding to the other end of the first transmission rod, and when the main lock tongue withdraws from the lock tongue hole, the first return spring resets the first transmission rod to separate the locking block from the locking groove.

Preferably, the sky lock is provided with a sky lock transmission end and a sky lock tongue end, the ground lock is provided with a ground lock transmission end and a ground lock tongue end, the locking groove is provided on the ground lock, the sky lock transmission end and the ground lock transmission end are both transmission connected to the rotating connecting head, the sky lock tongue end and the ground lock tongue end extend out of the shell, the sky lock tongue end moves upward during the locking movement, and the ground lock tongue end moves downward during the locking movement.

Preferably, a gear set is also provided inside the shell, and the sky lock transmission end and the ground lock transmission end are both transmission-connected to the rotating connector through the gear set, so that the rotating connector controls the sky lock and the ground lock to perform locking movement or unlocking movement.

Preferably, the gear set includes a first gear, a second gear and a third gear, the sky lock transmission end is provided with a first spur rack, the ground lock transmission end is provided with a second spur rack, the first gear is provided on the rotating connection head and rotates in the same direction as the rotating connection head, the second gear is meshed with the first gear and the first spur rack respectively, the third gear is provided between the first spur rack and the second spur rack, and the third gear is meshed with the first spur rack and the second spur rack respectively;

When the rotating connector rotates counterclockwise, the first spur rack is driven to move upward and the second spur rack is driven to move downward. When the rotating connector rotates clockwise, the first spur rack is driven to move downward and the second spur rack is driven to move upward.

Preferably, a pushing block is provided on the rotating connector, and an open slot is provided on the first gear. The pushing block moves with the rotation of the rotating connector to contact with both ends of the open slot, so that the rotating connector drives the first gear to rotate.

Preferably, a second reset spring is provided on the rotating connector, and the second reset spring is used to reset the rotating connector after the rotating connector rotates.

Preferably, an auxiliary spring is further provided in the shell, and a protrusion is provided on the edge of the rotating connector. When the rotating connector rotates clockwise, the protrusion moves to conflict with the auxiliary spring, forming an elastic force to reset the rotating connector.

Compared with the prior art, the present invention has the following beneficial effects:

In this solution, a lock tongue hole is provided on the shell of the passive lock for the insertion of the main lock tongue of the active lock. The rotating connecting head is connected to the handle of the passive lock and controls the sky lock and ground lock of the passive lock to perform locking or unlocking movement. The linkage mechanism includes a locking block. After the sky lock and ground lock complete the locking movement, the locking groove on the ground lock moves to a position corresponding to the locking block. After the main lock tongue is inserted into the lock tongue hole, the linkage mechanism is driven so that the locking block moves to be connected with the locking groove, thereby making the ground lock and sky lock unable to move, completing the locking of the sky lock and ground lock, with high safety and good anti-theft effect. A first reset spring is provided to reset the linkage mechanism so that the locking block is separated from the locking groove, thereby releasing the lock of the sky lock and ground lock.

It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as embodiments) can be combined with each other to form a new or preferred technical solution. Due to space limitations, they will not be described one by one here.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the sky and earth locking structure of the present invention.

FIG. 3 is a schematic structural diagram of a first transmission rod of the present invention.

FIG. 4 is a schematic diagram of the three-dimensional structure of the locking block of the present invention.

in:

1-passive lock, 11-housing, 111-rotating connector, 1111-pushing block, 1112-protruding portion, 112-first gear, 113-second gear, 114-third gear, 115-auxiliary spring, 116-blocking block, 117-second return spring, 12-sky lock, 121-first straight rack, 13-ground lock, 131-second straight rack, 132-locking groove, 14-first transmission rod, 141-sliding groove, 1411-first sliding section, 1412-second sliding section, 1413-third sliding section, 142-first return spring, 15-locking block, 151-elastic member, 16-second transmission rod, 161-accommodating groove;

2-active lock, 21-main lock tongue.

DETAILED DESCRIPTION

In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Example 1

As shown in Figures 1 to 4, this embodiment discloses a passive lock 2 with a locking function of a sky lock 13, including a shell 11, a lock tongue hole (not shown in the figure) is provided on the shell 11 for the main lock tongue 21 of the active lock 2 to be inserted, and also includes a sky lock 12 and a ground lock 13. The sky lock 12 and the ground lock 13 perform locking or unlocking movements synchronously, and a locking groove 132 is provided on the ground lock 13. A linkage mechanism and a rotating connector 111 are provided inside the shell 11. The rotating connector 111 is connected to the handle of the passive lock 2 and controls the sky lock 12 and the ground lock 13 to perform locking or unlocking movements. The linkage mechanism includes a locking block 15. After the sky lock 12 and the ground lock 13 complete the locking movement, the main lock tongue 21 is inserted into the lock tongue hole and drives the linkage mechanism to make the locking block 15 move to be connected with the locking groove 132 so that the ground lock 13 and the sky lock 12 cannot move. Unless the active lock 2 is unlocked, the sky lock 12 and the ground lock 13 of the passive lock 2 will always be in a locked state, which has high security and good anti-theft effect.

Preferably, in the present embodiment, the linkage mechanism also includes a first transmission rod 14 slidably arranged in the shell 11, one end of the first transmission rod 14 extends into the lock tongue hole, the locking block 15 is slidably connected to the first transmission rod 14, and an elastic member 151 is arranged on the locking block 15. After the sky lock 12 and the ground lock 13 complete the locking movement, the elastic member 151 drives the locking block 15 to move with the sliding of the first transmission rod 14 until it is clamped and connected with the locking groove 132.

Specifically in the present embodiment, the first transmission rod 14 slides linearly in a direction away from the lock tongue hole, and a sliding groove 141 is provided on the first transmission rod 14. The sliding groove 141 is sequentially segmented along the sliding direction of the first transmission rod 14 and is provided with a first sliding section 1411, a second sliding section 1412, and a third sliding section 1413 connected to each other. The first sliding section 1411 and the third sliding section 1413 are both horizontally arranged, and the horizontal plane of the first sliding section 1411 is higher than the horizontal plane of the third sliding section 1413. The second sliding section 1412 is obliquely arranged between the first sliding section 1411 and the third sliding section 1413. Before the main lock tongue 21 is inserted, the locking block 15 is in contact with the first sliding section 1411. During the insertion of the main lock tongue 21, the first sliding section 1411 and the third sliding section 1413 are in contact with each other. The second sliding section 1412 and the third sliding section 1413 slide under the locking block 15 in sequence. Because the locking block 15 is arranged inside the shell 11 and is fixed in the horizontal direction, and the elastic member 151 is vertically arranged between the locking block 15 and the shell 11, the elastic member 151 is specifically a spring, and the elastic force generated causes the locking block 15 to move downward from the plane where the first sliding section 1411 is located to the plane where the third sliding section 1413 is located. When the sky lock 12 and the ground lock 13 complete the locking movement, the locking groove 132 is located under the locking block 15. After the main lock tongue 21 is fully inserted into the lock tongue hole, the locking block 15 is driven by the elastic member 151 to move down to complete the card connection with the locking groove 132, thereby completing the locking of the sky lock 12 and the ground lock 13.

Preferably, in the present embodiment, the linkage mechanism further includes a second transmission rod 16, a first return spring 142 is provided at the other end of the first transmission rod 14, and a receiving groove 161 is provided on the second transmission rod 16 corresponding to the other end of the first transmission rod 14, and when the main lock tongue 21 withdraws from the lock tongue hole, the first return spring 142 resets the first transmission rod 14 to separate the locking block 15 from the locking groove 132.

Specifically, in this embodiment, the first transmission rod 14 moves under the drive of the main lock tongue 21, and one end of the first return spring 142 is gradually inserted into the receiving groove 161. The first return spring 142 is compressed under the joint action of the receiving groove 161 and the first transmission rod 14. When the main lock tongue 21 completely withdraws from the passive lock 2, the elastic force generated by the first return spring 142 causes the first transmission rod 14 to return to the original position. At the same time, the locking block 15 slides relative to the sliding groove 141, and the locking block 15 moves up from the plane where the third sliding section 1413 is located to the plane where the first sliding section 1411 is located, so that the locking block 15 is separated from the locking groove 132, and the locking of the sky lock 12 and the ground lock 13 is released. At this time, the unlocking movement of the sky lock 12 and the ground lock 13 can be performed.

Preferably, in this embodiment, a gear set is further provided inside the housing 11, the sky lock 12 is provided with a sky lock 12 transmission end and a sky lock 12 tongue end, the ground lock 13 is provided with a ground lock 13 transmission end and a ground lock 13 tongue end, a locking groove 132 is provided on the ground lock 13, and the sky lock 12 tongue end and the ground lock 13 tongue end extend out of the housing 11. The sky lock 12 transmission end and the ground lock 13 transmission end are both transmission-connected to the rotating connector 111 through the gear set, so that the rotating connector 111 controls the sky lock 12 and the ground lock 13 to perform locking or unlocking movements, the sky lock 12 tongue end moves upward when performing the locking movement, and the ground lock 13 tongue end moves downward when performing the locking movement.

Specifically, in the present embodiment, the gear set includes a first gear 112, a second gear 113 and a third gear 114. The transmission end of the sky lock 12 is provided with a first spur rack 121, and the transmission end of the ground lock 13 is provided with a second spur rack 131. The first gear 112 is provided on the rotating connector 111, and a push block 1111 is provided on the rotating connector 111. An open slot is provided on the first gear 112. The push block 1111 moves with the rotation of the rotating connector 111 to conflict with both ends of the open slot. The push block 1111 pushes the open slot so that the rotating connector 111 drives the first gear 112 to rotate in the same direction. The second gear 113 is respectively meshed with the first gear 112, and the second gear 113 is also meshed with the first spur rack 121. The third gear 114 is provided between the first spur rack 121 and the second spur rack 131, and the third gear 114 is respectively meshed with the first spur rack 121 and the second spur rack 131.

Through the connection relationship of the above gear sets, when the rotating connecting head 111 rotates counterclockwise, the first gear 112 rotates synchronously counterclockwise with the rotating connecting head 111, and the second gear 113 meshing with the first gear 112 rotates synchronously clockwise, and the second gear 113 drives the first spur rack 121 to move upward, and the first rack moving upward drives the third gear 114 to rotate counterclockwise, and then the second spur rack 131 moves downward, so that the sky lock 12 gradually performs an upward locking movement, and the ground lock 13 gradually performs a downward locking movement; when the rotating connecting head 111 rotates clockwise, the first gear 112 rotates synchronously clockwise with the rotating connecting head 111, and the second gear 113 meshing with the first gear 112 rotates synchronously counterclockwise, the second gear 113 drives the first spur rack 121 to move downward, and the first rack moving downward drives the third gear 114 to rotate clockwise, and then the second spur rack 131 moves upward, so that the sky lock 12 gradually performs an downward unlocking movement, and the ground lock 13 gradually performs an upward unlocking movement. By twisting the handle, the sky lock 12 and the ground lock 13 can be locked or unlocked by rotating the transmission relationship between the connecting head 111 and the gear set. The operation is simple and fast, and the applicability is good.

Preferably, in this embodiment, a second reset spring 117 is provided on the rotating connector 111, and the second reset spring 117 is used to reset the rotating connector 111 after the rotating connector 111 rotates. An auxiliary spring 115 is also provided in the housing 11, and a protrusion 1112 is provided on the edge of the rotating connector 111. When the rotating connector 111 rotates clockwise, the protrusion 1112 moves to conflict with the auxiliary spring 115, forming an elastic force to reset the rotating connector 111.

Specifically in this embodiment, a blocking block 116 is provided inside the shell 11 beside the rotating connector 111 , one end of the second return spring 117 abuts against one side of the blocking block 116 , and the other end of the second return spring 117 abuts against the other side of the blocking block 116 . When the handle is lifted, the rotating connector 111 rotates counterclockwise, and the second return spring 117 rotates counterclockwise synchronously. The end of the second return spring 117 located on the lower side generates an interaction force with the blocking block 116 to generate elastic deformation. After the handle is released, the elastic deformation causes the second return spring 117 to rotate clockwise, thereby driving the rotating connector 111 to rotate synchronously clockwise, and the handle follows the rotation and moves down to the initial position, which is generally a horizontal position; and when the handle is pressed down, the rotating connector 111 rotates clockwise, and the second return spring 117 rotates clockwise synchronously. The end of the second return spring 117 located on the upper side generates an interaction force with the blocking block 116 to generate elastic deformation. After the handle is released, the elastic deformation causes the second return spring 117 to rotate counterclockwise, thereby driving the rotating connector 111 to rotate synchronously counterclockwise, and the handle follows the rotation and moves up to the initial position.

In addition, when the handle is pressed down, the rotating connector 111 rotates clockwise, and the protrusion 1112 moves up and contacts the auxiliary spring 115, causing the auxiliary spring 115 to deform. When the handle is released, the elastic force of the auxiliary spring 115 pushes the protrusion 1112 down and drives the rotating connector 111 to rotate counterclockwise, and the handle is reset.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims (9)

1. A passive lock with anti-theft function, comprising a housing, characterized in that a bolt hole is provided on the housing for inserting a main bolt of the active lock; It also includes a sky lock and a ground lock, wherein the sky lock and the ground lock perform locking or unlocking movements synchronously, and a locking groove is provided on the ground lock; A linkage mechanism and a rotating connector are provided inside the housing, the rotating connector is connected to the handle of the passive lock and controls the sky lock and the ground lock to perform locking or unlocking movements, the linkage mechanism includes a locking block, after the sky lock and the ground lock complete the locking movement, the main lock tongue is inserted into the lock tongue hole and then drives the linkage mechanism, so that the locking block moves to be connected with the locking groove, so that the ground lock and the sky lock cannot move; The linkage mechanism also includes a first transmission rod slidably arranged in the shell, one end of the first transmission rod extends into the lock tongue hole, the locking block is slidably connected to the first transmission rod, and an elastic member is arranged on the locking block, and the elastic member is a spring. After the sky lock and the ground lock complete the locking movement, the elastic member drives the locking block to move with the sliding of the first transmission rod until it is clamped and connected with the locking groove. 2. A passive lock with an anti-theft function according to claim 1, characterized in that the first transmission rod slides linearly in a direction away from the lock tongue hole, a sliding groove is arranged on the first transmission rod, and the sliding groove is sequentially segmented along the sliding direction of the first transmission rod to have a first sliding section, a second sliding section, and a third sliding section connected to each other, the first sliding section and the third sliding section are both horizontally arranged and the horizontal plane of the first sliding section is higher than the horizontal plane of the third sliding section, the second sliding section is inclined, and the first sliding section, the second sliding section, and the third sliding section sequentially slide under the locking block during the insertion of the main lock tongue; The locking block is arranged inside the housing and is fixed in the horizontal direction, and the elastic member is vertically arranged between the locking block and the housing; After the sky lock and the ground lock complete the locking movement, the locking groove is located below the locking block, and after the main lock tongue is inserted into the lock tongue hole, the elastic member drives the locking block to move downward to be engaged with the locking groove. 3. A passive lock with anti-theft function according to claim 1 or 2, characterized in that the linkage mechanism also includes a second transmission rod, a first return spring is provided at the other end of the first transmission rod, and a receiving groove is provided on the second transmission rod corresponding to the other end of the first transmission rod, and when the main lock tongue withdraws from the lock tongue hole, the first return spring resets the first transmission rod to separate the locking block from the locking groove. 4. A passive lock with anti-theft function according to any one of claims 1-2, characterized in that the sky lock is provided with a sky lock transmission end and a sky lock tongue end, the ground lock is provided with a ground lock transmission end and a ground lock tongue end, the locking groove is provided on the ground lock, the sky lock transmission end and the ground lock transmission end are both transmission-connected to the rotating connecting head, the sky lock tongue end and the ground lock tongue end extend out of the shell, the sky lock tongue end moves upward during locking movement, and the ground lock tongue end moves downward during locking movement. 5. A passive lock with anti-theft function according to claim 4, characterized in that a gear set is also provided inside the shell, and the sky lock transmission end and the ground lock transmission end are both transmission-connected to the rotating connector through the gear set, so that the rotating connector controls the sky lock and the ground lock to perform locking movement or unlocking movement. 6. A passive lock with an anti-theft function according to claim 5, characterized in that the gear set comprises a first gear, a second gear and a third gear, the sky lock transmission end is provided with a first spur rack, the ground lock transmission end is provided with a second spur rack, the first gear is provided on the rotating connector and rotates in the same direction as the rotating connector, the second gear is meshed with the first gear and the first spur rack respectively, the third gear is provided between the first spur rack and the second spur rack, and the third gear is meshed with the first spur rack and the second spur rack respectively; When the rotating connector rotates counterclockwise, the first spur rack is driven to move upward and the second spur rack is driven to move downward. When the rotating connector rotates clockwise, the first spur rack is driven to move downward and the second spur rack is driven to move upward. 7. A passive lock with anti-theft function according to claim 6, characterized in that a pushing block is provided on the rotating connecting head, an open groove is provided on the first gear, and the pushing block moves with the rotation of the rotating connecting head until it conflicts with the two ends of the open groove, so that the rotating connecting head drives the first gear to rotate. 8. A passive lock with an anti-theft function according to claim 1, characterized in that a second reset spring is provided on the rotating connector, and the second reset spring is used to reset the rotating connector after the rotating connector rotates. 9. A passive lock with an anti-theft function according to claim 8, characterized in that an auxiliary spring is also arranged in the shell, and a protrusion is arranged on the edge of the rotating connector, and when the rotating connector rotates clockwise, the protrusion moves to conflict with the auxiliary spring, forming an elastic force to reset the rotating connector.