Lock with internal lock protection structure

Abstract

The utility model discloses a lockset with an internal lock protection structure, which comprises a lock shell, an internal handle, a driving tooth, a driven tooth and a stop block, the internal handle is rotatably connected onto the lock shell, the driving tooth is arranged on the internal handle and can rotate along with the internal handle, the driven tooth is rotatably connected onto the lock shell and is meshed with the driving tooth, a stop groove is arranged on the driven tooth, and the stop block is arranged on the lock shell. The stop block can move into the stop groove along the lock shell to limit rotation of the driven teeth or move away from the stop groove along the lock shell to release the driven teeth. The inner handle is provided with the driving teeth, the lock shell is provided with the driven teeth meshed with the driving teeth, the driven teeth are provided with the stop grooves, and the lock shell is provided with the stop blocks capable of moving into or away from the driven grooves, so that the inner handle is locked when the stop blocks move into the stop grooves; a thief is prevented from opening the door body by rotating the inner handle by stretching an iron wire into the cat eye, and the anti-theft capability is good.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to locks with an internal locking protection structure. Background Technology

[0002] A lock is a device installed on a door to prevent thieves from entering a house. Existing locks include an outer locking assembly and an inner locking assembly. The outer locking assembly includes an outer lock housing located on the outside of the door and an outer handle rotatably connected to the outer lock housing. The inner locking assembly includes an inner lock housing located on the inside of the door and an inner handle rotatably connected to the inner lock housing. The inner and outer handles can rotate synchronously. Existing locks lack an inner locking protection structure. Thieves can open the door by removing the peephole and inserting a wire through the peephole mounting hole to turn the inner handle, resulting in inadequate anti-theft performance. Utility Model Content

[0003] The purpose of this utility model is to provide a lock with an internal locking protection structure to solve the problem that existing locks lack an internal locking protection structure, allowing thieves to insert a wire through the peephole mounting hole to turn the inner handle and open the door, resulting in poor anti-theft effect.

[0004] This utility model is achieved through the following technical solution:

[0005] A lock with an internal locking protection structure includes a lock housing, an inner handle, a driving tooth, a driven tooth, and a stop block. The inner handle is rotatably connected to the lock housing. The driving tooth is located on the inner handle and can rotate with the inner handle. The driven tooth is rotatably connected to the lock housing and meshes with the driving tooth. The driven tooth has a stop groove. The stop block can move along the lock housing into the stop groove to restrict the rotation of the driven tooth, or move along the lock housing away from the stop groove to release the driven tooth.

[0006] Furthermore, the lock housing is provided with a guide hole, and the stop block is slidably connected to the guide hole and can move into or out of the stop groove along the guide hole.

[0007] Furthermore, the stop block has an outward pushing part and a stop part. The stop part is slidably connected in the guide hole and can move into or out of the stop groove along the guide hole. The outward pushing part is provided on one side of the stop part and partially abuts against the lock housing.

[0008] Furthermore, the lock housing has a stop post, and a stop member is connected to the stop post and the stop block. The stop member restricts the stop block from moving along the guide hole when the stop block moves into or out of the stop groove.

[0009] Furthermore, one end of the limiting member passes through the limiting post and the other end passes through the stop block. The limiting member elastically expands and contracts in the direction of the line connecting the limiting post and the stop block, causing the stop block to abut against the wall of the guide hole.

[0010] Furthermore, the inner handle has an upper connecting shaft connected to the active gear, the upper connecting shaft is provided with a polygonal insertion hole, and a torsion spring is passed through the upper connecting shaft to rotate and reset the inner handle.

[0011] Furthermore, the driving tooth, the driven tooth, and the stop block are arranged sequentially from top to bottom. The driven tooth has a toothed portion at its upper end that meshes with the driving tooth, and a stop groove at its lower end.

[0012] Furthermore, the lock housing is provided with a lower connecting shaft that is rotatably connected to the driven gear, and the center lines of the upper connecting shaft and the lower connecting shaft are collinear in the vertical direction.

[0013] Furthermore, the inner handle is provided with a reversing component, and the driving gear is rotatably connected to the inner handle and detachably fixedly connected to the reversing component.

[0014] Furthermore, the upper connecting shaft has a slot, the reversing member passes through the upper connecting shaft and has a plug that engages with the slot, and the reversing member is provided with a bolt that is threadedly connected to the drive tooth.

[0015] The advantage of this technical solution is that by configuring an active tooth on the inner handle, a driven tooth on the lock housing that meshes with the active tooth, a stop groove on the driven tooth, and a stop block on the lock housing that can move into or out of the driven groove, the inner handle is locked when the stop block moves into the stop groove, preventing thieves from opening the door by inserting a wire through the peephole to turn the inner handle. This provides excellent anti-theft capability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional representation of the lock with an internal locking protection structure disclosed in the embodiments. Figure 1 ;

[0019] Figure 2This is a three-dimensional representation of the lock with an internal locking protection structure disclosed in the embodiments. Figure 2 (Hidden part of the lock shell);

[0020] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0022] Figure 5 This is a rear view (with the lock housing partially hidden) of a lock with an internal locking protection structure disclosed in the embodiment.

[0023] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0024] Figure 7 This is an exploded view of a lock with an internal locking protection structure disclosed in the embodiment. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example: Figure 1-7 As shown, the lock with an internal locking protection structure includes a lock housing 1, an inner handle 2, a driving tooth 3, a driven tooth 4, and a stop block 5. The inner handle 2 is rotatably connected to the lock housing 1. The driving tooth 3 is located on the inner handle 2 and can rotate with the inner handle 2. The driven tooth 4 is rotatably connected to the lock housing 1 and meshes with the driving tooth 3. The driven tooth 4 is provided with a stop groove 401. The stop block 5 can move along the lock housing 1 into the stop groove 401 to restrict the rotation of the driven tooth 4, or move away from the stop groove 401 to release the driven tooth 4.

[0027] The aforementioned lock with an inner locking protection structure is located inside the door. Correspondingly, the outer lock (not shown in the figure) used in conjunction with it is located outside the door. The outer lock has an outer handle and a polygonal connecting rod (not shown in the figure) connected to the outer handle. The inner handle 2 has an upper connecting shaft 201 connected to the drive gear 3. The upper connecting shaft 201 is provided with a polygonal insertion hole 202 for the polygonal connecting rod to be inserted, so that the inner and outer handles can rotate synchronously.

[0028] The movement relationship of the lock with the internal locking protection structure is as follows: When the stop block 5 moves away from the stop groove 401, the inner handle 2 rotates, driving the active tooth 3 to rotate and the driven tooth 4 to rotate, realizing the opening and locking of the door. When the stop block 5 moves into the stop groove 401, the stop block 5 and the stop groove 401 cooperate to restrict the rotation of the driven tooth 4, thereby restricting the rotation of the active tooth 3 and the inner handle 2, realizing the internal locking.

[0029] In summary, this embodiment provides a lock with an internal locking protection structure to solve the problem that existing locks lack an internal locking protection structure, allowing thieves to insert a wire through the peephole to turn the internal handle and open the door, resulting in poor anti-theft performance. This is mainly achieved by configuring an active tooth 3 on the internal handle 2, a driven tooth 4 meshing with the active tooth 3 on the lock housing 1, a stop groove 401 on the driven tooth 4, and a stop block 5 that can move into or out of the driven groove on the lock housing 1. This locks the internal handle 2 when the stop block 5 moves into the stop groove 401, preventing thieves from inserting a wire through the peephole to turn the internal handle 2 and open the door, thus providing excellent anti-theft capabilities.

[0030] In this embodiment of the invention, the lock housing 1 is provided with a guide hole 101, and the stop block 5 is slidably connected in the guide hole 101 and can move into or out of the stop groove 401 along the guide hole 101. The above arrangement, by configuring the guide hole 101 on the lock housing 1 to be slidably connected with the stop block 5, makes the assembly of the stop block 5 and the lock housing 1 stable and the movement smooth.

[0031] In this embodiment of the invention, the stop block 5 has an outward pushing portion 501 and a stop portion 502. The stop portion 502 is slidably connected within the guide hole 101 and can move into or out of the stop groove 401 along the guide hole 101. The outward pushing portion 501 is located on one side of the stop portion 502 and partially abuts against the lock housing 1. The outward pushing portion 501 is exposed outside the lock housing 1 for the user to push and pull. The above arrangement, by configuring the stop block 5 as a stop portion 502 that moves along the guide hole 101 and an outward pushing portion 501 that abuts against the lock housing 1 when the stop portion 502 moves, ensures stable assembly and smooth movement of the stop block 5 and the lock housing 1.

[0032] In this embodiment of the utility model, the stop block 5 also has a stop block 503. The stop block 503 is located at the end of the stop part 502 away from the push part 501. The stop block 503 cooperates with the push part 501 to restrict the stop block 5 from disengaging from the lock shell 1. The stop block 503 and the stop part 502 are detachably fixedly connected.

[0033] In this embodiment of the invention, the lock housing 1 has a stop post 102, and a stop member 6 is connected to the stop post 102 and the stop block 5. The stop member 6 restricts the movement of the stop block 5 along the guide hole 101 when the stop block 5 moves into or out of the stop groove 401. This arrangement, by configuring the stop post 102 on the lock housing 1 and the stop member 6 on the stop post 102 and the stop block 5 to restrict the movement of the stop block 5 along the guide hole 101, allows the stop block 5 to remain stationary relative to the lock housing 1 (locked onto the lock housing 1) after being driven into or out of the stop groove 401 by external force, resulting in excellent anti-theft performance.

[0034] In this embodiment of the invention, one end of the limiting member 6 passes through the limiting post 102 and the other end passes through the stop block 5. The limiting member 6 elastically extends and retracts in the direction of the line connecting the limiting post 102 and the stop block 5, causing the stop block 5 to abut against the wall of the guide hole 101. This arrangement, by configuring the limiting member 6 so that one end passes through the limiting post 102 and the other end passes through the stop block 5, and elastically extends and retracts in the direction of the line connecting the limiting post 102 and the stop block 5, locks the stop block 5 onto the lock housing 1, preventing the stop block 5 from moving relative to the lock housing 1 after it has moved into place, thus providing excellent anti-theft performance.

[0035] In this embodiment of the invention, a torsion spring 7 is mounted on the upper connecting shaft 201 to allow the inner handle 2 to rotate and reset. This arrangement, by configuring the torsion spring 7 on the upper connecting shaft 201 to drive the inner handle 2 to rotate and reset, ensures that the inner handle 2 can rotate and reset after the door is opened.

[0036] In this embodiment of the invention, the driving tooth 3, the driven tooth 4, and the stop block 5 are arranged sequentially from top to bottom. The driven tooth 4 has a toothed portion 402 at its upper end that meshes with the driving tooth 3, and a stop groove 401 at its lower end. By arranging the driving tooth 3, the driven tooth 4, and the stop block 5 sequentially from top to bottom, and with the stop groove 401 positioned at the lower end of the driven tooth 4, the arrangement makes the driving tooth 3, the driven tooth 4, and the stop block 5 fit together compactly and reasonably.

[0037] In this embodiment of the invention, the lock housing 1 is provided with a lower connecting shaft 103 that is rotatably connected to the driven gear 4, and the center lines of the upper connecting shaft 201 and the lower connecting shaft 103 are collinear in the vertical direction. The above arrangement, by configuring the upper connecting shaft 201 and the lower connecting shaft 103 with their center lines collinear in the vertical direction, makes the assembly of the driving gear 3, the driven gear 4, and the stop block 5 compact and reasonable.

[0038] In this embodiment of the invention, the inner handle 2 is provided with a reversing component 8, and the driving gear 3 is rotatably connected to the inner handle 2 and detachably fixedly connected to the reversing component 8. Specifically, the upper connecting shaft 201 has a slot 203, the reversing component 8 passes through the upper connecting shaft 201 and has a plug block 801 that engages with the slot 203, and the reversing component 8 is provided with a bolt 9 that is threadedly connected to the driving gear 3. When reversing, the bolt 9 is loosened to release the driving gear 3, allowing the inner handle 2 and the driving gear 3 to rotate relative to each other to adjust the opening direction of the door (left opening or right opening). The above arrangement, by configuring the reversing component 8 detachably fixedly connected to the driving gear 3 on the inner handle 2, allows the inner handle 2 and the driving gear 3 to rotate synchronously or relative to each other, making the opening direction adjustable and providing flexible and convenient use.

[0039] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered as protected by this utility model.

Claims

1. A lock with an internal locking protection structure, characterized in that, The lock includes a lock housing, an inner handle, a driving tooth, a driven tooth, and a stop block. The inner handle is rotatably connected to the lock housing. The driving tooth is located on the inner handle and can rotate with the inner handle. The driven tooth is rotatably connected to the lock housing and meshes with the driving tooth. The driven tooth has a stop groove. The stop block can move along the lock housing into the stop groove to restrict the rotation of the driven tooth, or move along the lock housing away from the stop groove to release the driven tooth.

2. The lock with an internal locking protection structure according to claim 1, characterized in that, The lock housing is provided with a guide hole, and the stop block is slidably connected to the guide hole and can move into or out of the stop groove along the guide hole.

3. The lock with an internal locking protection structure according to claim 2, characterized in that, The stop block has an outward pushing part and a stop part. The stop part is slidably connected in the guide hole and can move into or out of the stop groove along the guide hole. The outward pushing part is located on one side of the stop part and partially abuts against the lock housing.

4. The lock with an internal locking protection structure according to claim 3, characterized in that, The lock housing has a stop post, and a stop member is connected to the stop post and the stop block. The stop member restricts the stop block from moving along the guide hole when the stop block moves into or out of the stop groove.

5. The lock with an internal locking protection structure according to claim 4, characterized in that, One end of the limiting member passes through the limiting post and the other end passes through the stop block. The limiting member elastically expands and contracts in the direction of the line connecting the limiting post and the stop block, causing the stop block to abut against the wall of the guide hole.

6. The lock with an internal locking protection structure according to claim 1, characterized in that, The inner handle has an upper connecting shaft that is connected to the active gear. The upper connecting shaft has a polygonal insertion hole, and a torsion spring that rotates the inner handle to return to its original position passes through the upper connecting shaft.

7. The lock with an internal locking protection structure according to claim 6, characterized in that, The driving tooth, the driven tooth, and the stop block are arranged sequentially from top to bottom. The driven tooth has a toothed portion at its upper end that meshes with the driving tooth, and a stop groove at its lower end.

8. The lock with an internal locking protection structure according to claim 7, characterized in that, The lock housing is provided with a lower connecting shaft that is rotatably connected to the driven gear, and the center lines of the upper connecting shaft and the lower connecting shaft are collinear in the vertical direction.

9. The lock with an internal locking protection structure according to claim 6, characterized in that, The inner handle is provided with a reversing component, and the driving gear is rotatably connected to the inner handle and detachably fixedly connected to the reversing component.

10. The lock with an internal locking protection structure according to claim 9, characterized in that, The upper connecting shaft has a slot, the reversing member passes through the upper connecting shaft and has a plug that engages with the slot, and the reversing member is provided with a bolt that is threadedly connected to the drive tooth.

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