Lock

Abstract

The utility model provides a lock which is suitable for various application scenes such as doors and windows, has good safety and can effectively prevent the spring bolt from being jacked back by the sheet. The lock comprises a lock box, wherein a first side of the lock box is provided with a first through hole and a second through hole; the spring bolt is configured to be capable of being switched between a locking position and an unlocking position; the stop plate is configured to rotate around a first axis so as to be switched between a limiting position and an avoiding position; the stop plate reset spring is configured to enable the stop plate to reset to the limiting position; and a detection tongue configured to be switchable between a first position and a second position. Wherein the detection tongue can detect whether the door / window is closed or not. When the door / window is closed, the detection tongue moves to the second position under the extrusion action of the door frame / window frame; at the moment, the detection tongue does not interfere with movement of the stop piece any more, the stop piece is driven by the stop piece reset spring to the limiting position, then the spring bolt is limited to the locking position, and therefore the lock is effectively prevented from being illegally opened by the thin piece.

Description

Technical Field

[0001] This utility model relates to the field of security protection technology, and in particular to a lock. Background Technology

[0002] Currently, most common door locks on the market are equipped with a latch to achieve automatic locking. Specifically, when the door is closed, the latch automatically pops out under the action of a spring and inserts into the keyhole on the door frame, thus providing initial locking. This design is widely used due to its simplicity and ease of use. However, this traditional latch design is relatively vulnerable to certain illegal opening methods, especially the thin-plate technique. The thin-plate technique is a common illegal unlocking method. By inserting a thin plate (such as a plastic card or metal sheet) into the gap between the door and the lock body, the elasticity or rigidity of the plate is used to apply appropriate force to push the latch back into the lock body, thus easily opening the lock. This technique does not require complex tools or advanced skills and can even be completed in a short time, significantly compromising the security of the door lock.

[0003] Therefore, current door locks have significant shortcomings in preventing them from being opened using slat technology. As people's demands for security continue to increase, there is an urgent need in the market for an improved door lock structure that can effectively prevent the latch from being pushed back by slats, thereby improving the security and reliability of door locks and meeting people's security requirements.

[0004] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Utility Model Content

[0005] To address one or more deficiencies in the prior art, this utility model provides a lock, including a lock box, wherein a first through hole and a second through hole are provided on a first side of the lock box;

[0006] A latch is slidably disposed within the lock housing and configured to switch between a locked position and an unlocked position, wherein, in the locked position, one end of the latch extends out of the lock housing via a first through hole;

[0007] A stop plate is disposed within the lock housing and configured to rotate about a first axis to switch between a limiting position and a clearance position. In the limiting position, the stop plate can limit the bolt to a locked position; in the clearance position, the stop plate and the bolt do not interfere with each other.

[0008] A stop plate return spring, connected to the stop plate and configured to cause the stop plate to return to its limit position; and

[0009] A detection tongue is slidably disposed within the lock housing and configured to switch between a first position and a second position. In the first position, one end of the detection tongue extends out of the lock housing through a second through hole, and the other end of the detection tongue causes the stop plate to be in an avoidance position. In the second position, the detection tongue and the stop plate do not interfere with each other.

[0010] According to one aspect of the present invention, a first sliding groove is provided on the second side and / or the third side of the lock box;

[0011] The latch includes a lock head, a lock bar, and a connecting part connected in sequence, and the connecting part is slidably connected to the first slide groove.

[0012] According to one aspect of the present invention, the lock further includes a latch return spring, which is connected to the latch and configured to cause the latch to return to the locked position.

[0013] According to one aspect of the present invention, a second sliding groove is provided on the second side and / or the third side of the lock box;

[0014] The detection tongue is provided with a protrusion, which is slidably connected to the second groove.

[0015] According to one aspect of the present invention, the lock further includes a detection tongue return spring, the detection tongue return spring being connected to the detection tongue and configured to cause the detection tongue to return to a first position.

[0016] According to one aspect of the present invention, the lock further includes:

[0017] A pivot, disposed within the lock housing, is configured to be manually rotatable; and

[0018] A drive disc, connected to the rotating shaft, is configured to be driven by the rotating shaft to cause the stop plate to switch to the avoidance position and the bolt to switch to the unlock position.

[0019] According to one aspect of the present invention, the drive disc has a first paddle portion and a second paddle portion, the first paddle portion being configured to cause the stop plate to switch to an avoidance position; the second paddle portion being configured to cause the bolt to switch to an unlock position.

[0020] According to one aspect of the present invention, the lock further includes a handle connected to the pivot.

[0021] According to one aspect of the present invention, the lock further includes:

[0022] A lock cylinder is disposed within the lock housing, the lock cylinder being configured such that at least some of its components can rotate about a third axis;

[0023] A transmission component is connected between the lock cylinder and the drive disc, so that the lock cylinder can drive the drive disc to rotate about a second axis.

[0024] According to one aspect of the present invention, the drive disk is provided with a spline groove, and one end of the rotating shaft is provided with a spline structure. The spline structure is inserted into the spline groove, and there is a clearance between the spline structure and the spline groove, so that the drive disk can rotate relative to the rotating shaft.

[0025] Compared with existing technologies, the embodiments of this utility model provide a lock applicable to various application scenarios such as doors and windows, with good security and effectively preventing the bolt (slanted bolt) from being pushed back by the thin plate. Specifically, the lock is equipped with a detection tongue that can detect whether the door / window is closed. When the door / window is closed, the detection tongue moves to a second position under the pressure of the door / window frame; at this time, the detection tongue no longer interferes with the movement of the stop plate, and the stop plate is driven to the limit position by the stop plate return spring, thereby limiting the bolt to the locked position, thus effectively preventing the lock from being illegally opened by the thin plate. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 A schematic diagram of a lock according to an embodiment of the present invention is shown;

[0028] Figure 2 A schematic diagram of a detection tongue according to an embodiment of the present invention is shown;

[0029] Figure 3 and Figure 4 A schematic diagram of a lock according to an embodiment of the present invention in a door / window application scenario is shown;

[0030] Figure 5 A schematic diagram of a lock box according to an embodiment of the present invention is shown.

[0031] In the diagram: 100, Lock; 110, Lock box; 111, First side; 112, First through hole; 113, Second through hole; 114, Second side; 115, First slide groove; 116, Abutment; 117, Second slide groove; 120, Lock tongue; 121, Lock head; 122, Lock rod; 123, Connecting part; 124, Lock tongue return spring; 130, Stop plate; 131, Stop plate return spring; 140, Detection tongue; 141, Protrusion; 142, Detection tongue return spring; 150, Rotating shaft; 151, Spline structure; 160, Drive disc; 161, First lever part; 162, Second lever part; 163, Spline groove; 170, Lock cylinder; 180, Transmission component. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0038] Figure 1 A schematic diagram of a lock 100 according to an embodiment of the present invention is shown below, in conjunction with... Figure 1 Provide a detailed description.

[0039] like Figure 1 As shown, the lock 100 mainly includes a lock box 110, a bolt 120, a stop plate 130, a stop plate return spring 131, and a detection tongue 140. The lock box 110 has an internal mounting cavity for accommodating components such as the bolt 120, the stop plate 130, the stop plate return spring 131, and the detection tongue 140. On the first side 111 of the lock box 110... Figure 1 The upper side of the cavity is provided with an adjacent first through hole 112 and a second through hole 113, both of which are connected to the mounting cavity.

[0040] The latch 120 is a beveled latch, which is slidably disposed within the lock housing 110 and configured to switch between a locked position and an unlocked position. For example... Figure 1 As shown, when the latch 120 is in the locked position, one end of the latch 120 ( Figure 1The upper end of the lock plate extends out of the lock box 110 through the first through hole 112. The unlocked position of the lock tongue 120 is located directly below the locked position. When the lock tongue 120 is in the unlocked position, the lock tongue 120 is basically retracted into the mounting cavity.

[0041] Both the stop plate 130 and the stop plate return spring 131 are disposed within the lock housing 110, and the stop plate 130 is connected to the stop plate return spring 131. Furthermore, the stop plate 130 is pivotally connected within the lock housing 110 via a pivot, allowing the stop plate 130 to rotate within the lock housing 110 about a first axis (the axis of the pivot), thereby enabling switching between a limited position and a clearance position. The stop plate return spring 131 can cause the stop plate 130 to return to the limited position. Figure 1 As shown, when the stop plate 130 is in the clearance position, there is a certain gap between the stop plate 130 and the bolt 120, and the two do not interfere with each other. The bolt 120 can freely switch between the locked position and the unlocked position. The limiting position of the stop plate 130 is closer to the bolt 120 than the clearance position. When the stop plate 130 is in the limiting position, the stop plate 130 interferes with the bolt 120, thus limiting the bolt 120 to the locked position. At this time, the thin plate technology cannot be used to push the bolt 120 to the unlocked position.

[0042] Figure 2 A schematic diagram of a detection tongue 140 according to an embodiment of the present invention is shown. Figure 1 and Figure 2 As shown, the detection tongue 140 can be a slanted tongue, which is slidably disposed within the lock box 110 and configured to switch between a first position and a second position. Figure 1 As shown, when the detection tongue 140 is in the first position, one end of the detection tongue 140 ( Figure 1 The upper end of the detection tongue 140 extends out of the lock box 110 through the first through hole 112 to detect whether the door / window is closed; the other end of the detection tongue 140 contacts the stop plate 130 and causes the stop plate 130 to be in a clearance position. The second position of the detection tongue 140 is located directly below the first position. When the detection tongue 140 is in the second position, the detection tongue 140 is basically retracted into the mounting cavity, and the detection tongue 140 and the stop plate 130 do not interfere with each other. At this time, the stop plate 130 is in a limited position under the action of the stop plate return spring 131.

[0043] The basic structure of the lock 100 of this utility model has been roughly introduced above. Next, we will explain how the lock 100 effectively prevents it from being opened by "thin-plate technology" in the context of its use in door / window applications.

[0044] Figure 3 and Figure 4A schematic diagram of a lock 100 according to an embodiment of the present invention in a door / window application scenario is shown. Figure 3 As shown, when the door / window is open, the latch 120 is in the locked position, the detection latch 140 is in the first position, and the stop plate 130 is in the avoidance position. At this time, the stop plate 130 and the latch 120 do not interfere with each other, and the door / window can be closed smoothly. Figure 4 As shown, when the door / window is closed, the latch 120 returns to the locked position and engages with the lock hole on the door / window frame to lock the door / window. The detection latch 140 moves to the second position due to the pressure from the door / window frame. At this time, the stop plate 130 rotates to the limit position under the action of the stop plate return spring 131. At the same time, the stop plate 130 limits the latch 120 to the locked position, ensuring that the latch 120 will not be pushed to the unlocked position by the thin plate.

[0045] According to one embodiment of the present invention, such as Figure 1 As shown, the lock tongue 120 may include a lock head 121, a lock bar 122 and a connecting part 123 connected in sequence. The lock head 121 is located at the first through hole 112 of the lock box 110 and can move up and down along the first through hole 112. Figure 5 A schematic diagram of a lock box 110 according to an embodiment of the present invention is shown. Figure 1 and Figure 5 As shown, on the second side 114 and / or the third side of the lock box 110 ( Figure 1 (Not shown in the diagram, the third side is the side of the lock box 110 opposite to the second side 114) is provided with a first slide groove 115, the first slide groove 115 extends along a first direction, and the connecting part 123 is slidably connected to the first slide groove 115.

[0046] According to one embodiment of the present invention, such as Figure 1 As shown, the lock 100 may further include a bolt return spring 124. The bolt return spring 124 is connected to the bolt 120 and is configured to cause the bolt 120 to return to the locked position. Specifically, a stop member 116 is fixedly provided inside the lock housing 110, and the bolt return spring 124 is sleeved on the locking rod portion 122 of the bolt 120, with one end abutting against the lock head 121 and the other end abutting against the stop member 116. When the bolt 120 switches from the locked position to the unlocked position under the action of an external force, the bolt return spring 124 is compressed and accumulates elastic potential energy; when the external force disappears, the bolt return spring 124 releases the elastic potential energy and extends, thereby causing the bolt 120 to return to the locked position.

[0047] According to one embodiment of the present invention, such as Figure 1 , Figure 2 and Figure 5As shown, on the second side 114 and / or the third side of the lock box 110 ( Figure 1 (Not shown in the diagram, the third side being the side of the lock box 110 opposite to the second side 114) is provided with a second sliding groove 117, which extends along a first direction. A protrusion 141 is provided on the detection tongue 140 at a position corresponding to the second sliding groove 117. The protrusion 141 extends into the corresponding second sliding groove 117 and slides in cooperation with it, allowing the detection tongue 140 to slide freely along the second sliding groove 117. Preferably, the lock 100 may further include a detection tongue return spring 142. The detection tongue return spring 142 is connected to the detection tongue 140 and configured to cause the detection tongue 140 to return to a first position. The installation method of the detection return spring can refer to that of the lock tongue return spring 124; both can adopt the same or similar installation methods, therefore, it will not be repeated here.

[0048] According to one embodiment of the present invention, such as Figure 1 As shown, the lock 100 may further include a pivot 150 and a drive disc 160, wherein the pivot 150 is pivotally mounted within the lock housing 110 and configured to be manually operated. For example, the lock 100 may also include a handle (not shown) connected to the pivot 150, allowing the user to rotate the pivot 150 by operating the handle. The drive disc 160 is mounted on the pivot 150 and configured to be driven by the pivot 150 to cause the stop plate 130 to switch to the clearance position and the bolt 120 to switch to the unlock position. Specifically, as... Figure 1 As shown, a first paddle portion 161 and a second paddle portion 162 are provided on the drive disk 160. When the drive disk 160 rotates clockwise, firstly, the first paddle portion 161 contacts the stop plate 130 and pushes the stop plate 130 to switch to the avoidance position; then, the second paddle portion 162 contacts the bolt 120, especially the connecting portion 123 of the bolt 120, and pushes the bolt 120 to switch to the unlock position, thereby realizing the manual opening of the lock 100.

[0049] According to one embodiment of the present invention, such as Figure 1As shown, the lock 100 may further include a lock cylinder 170 and a transmission component 180. The lock cylinder 170 is installed within the lock housing 110 and can be driven by a key, allowing at least a portion of its components to rotate about a third axis (the axis of the lock cylinder 170). The transmission component 180 connects the lock cylinder 170 and the drive disc 160, enabling the lock cylinder 170 to drive the drive disc 160 to rotate about a second axis (the axis of the rotating shaft 150). Preferably, a spline groove 163 is provided in the middle of the drive disc 160, and a corresponding spline structure 151 is provided at one end of the rotating shaft 150. The spline structure 151 is inserted into the spline groove 163 of the drive disc 160, and there is a clearance between the spline structure 151 and the spline groove 163, allowing the drive disc 160 to rotate relative to the rotating shaft 150. Specifically, when a user turns the lock cylinder 170 with the key, the lock cylinder 170 drives the drive disc 160 to rotate around the second axis via the transmission component 180. During this process, the drive disc 160 drives the stop plate 130 and the bolt 120 sequentially via the first paddle part 161 and the second paddle part 162. At the same time, the idle travel design comes into play, allowing the drive disc 160 to rotate independently relative to the rotating shaft 150 (the rotating shaft 150 and the handle will not rotate with it), which allows the user to easily turn the key and achieve a relaxed and convenient operating experience.

[0050] Compared with the prior art, the embodiments of this utility model provide a lock 100 applicable to various application scenarios such as doors and windows, with good security, and can effectively prevent the bolt 120 (slanted bolt) from being pushed back by the thin plate. Specifically, the lock 100 is equipped with a detection bolt 140, which can detect whether the door / window is closed. When the door / window is closed, the detection bolt 140 will move to a second position under the squeezing action of the door / window frame; at this time, the detection bolt 140 no longer interferes with the movement of the stop plate 130, and the stop plate 130 is driven to the limit position by the stop plate return spring 131, thereby limiting the bolt 120 to the locked position, thus effectively preventing the lock 100 from being illegally opened by the thin plate.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lock, characterized in that, include A lock box, wherein a first through hole and a second through hole are provided on a first side of the lock box; A latch is slidably disposed within the lock housing and configured to switch between a locked position and an unlocked position, wherein, in the locked position, one end of the latch extends out of the lock housing via a first through hole; A stop plate is disposed within the lock housing and configured to rotate about a first axis to switch between a limiting position and a clearance position. In the limiting position, the stop plate can limit the bolt to a locked position; in the clearance position, the stop plate and the bolt do not interfere with each other. A stop plate return spring, connected to the stop plate and configured to cause the stop plate to return to its limit position; and A detection tongue is slidably disposed within the lock housing and configured to switch between a first position and a second position. In the first position, one end of the detection tongue extends out of the lock housing through a second through hole, and the other end of the detection tongue causes the stop plate to be in an avoidance position. In the second position, the detection tongue and the stop plate do not interfere with each other.

2. The lock of claim 1, wherein, The second and / or third sides of the lock box are respectively provided with first sliding grooves; The latch includes a lock head, a lock bar, and a connecting part connected in sequence, and the connecting part is slidably connected to the first slide groove.

3. The lock of claim 1 or 2, wherein, The lock also includes a latch return spring, which is connected to the latch and configured to cause the latch to return to the locked position.

4. The lock of claim 1, wherein, The second side and / or the third side of the lock box are respectively provided with a second sliding groove; The detection tongue is provided with a protrusion, which is slidably connected to the second groove.

5. The lock of either claim 1 or 4, wherein, The lock also includes a detection tongue return spring, which is connected to the detection tongue and configured to cause the detection tongue to return to a first position.

6. The lock of claim 1, wherein, The lock also includes: A pivot, disposed within the lock housing, is configured to be manually rotatable; and A drive disc, connected to the rotating shaft, is configured to be driven by the rotating shaft to cause the stop plate to switch to the avoidance position and the bolt to switch to the unlock position.

7. The lock of claim 6, wherein, The drive disc has a first paddle portion and a second paddle portion. The first paddle portion is configured to cause the stop plate to switch to the avoidance position; the second paddle portion is configured to cause the bolt to switch to the unlock position.

8. The lock of claim 6, wherein, The lock also includes a handle, which is connected to the pivot.

9. The lock of any of claims 6-8, wherein, The lock also includes: A lock cylinder is disposed within the lock housing, the lock cylinder being configured such that at least some of its components can rotate about a third axis; A transmission component is connected between the lock cylinder and the drive disc, so that the lock cylinder can drive the drive disc to rotate about a second axis.

10. The lock of claim 9, wherein, The drive disk is provided with a spline groove, and one end of the rotating shaft is provided with a spline structure. The spline structure is inserted into the spline groove, and there is a clearance between the spline structure and the spline groove, so that the drive disk can rotate relative to the rotating shaft.

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