Door lock

Abstract

The embodiment of the utility model provides a door lock, which comprises a first lock box, a second lock box and a second lock box, wherein the first lock box comprises a first lock shell, and the first lock shell is provided with a first center hole; the second lock box comprises a second lock shell, and the second lock shell is provided with a second center hole. The knob is rotatably positioned in the second lock box; the knob comprises a connecting end, and the connecting end extends into the second center hole so as to be located in the second lock box; the lock cylinder structure comprises a lock cylinder barrel and a linkage shaft. The lock cylinder barrel penetrates into the first center hole and is rotatably located in the first lock box. One end of the linkage shaft is connected with the connecting end, and the other end is inserted into the lock cylinder barrel; the shifting structure is located in the second lock box and connected with the connecting end. The spring bolt structure is located in the second lock box in a sliding mode. The lock cylinder barrel and the rotary knob are linked through the linkage shaft, and under the condition that the lock cylinder barrel or the rotary knob rotates, the shifting structure rotates along with the lock cylinder barrel or the rotary knob and controls the lock tongue mechanism to enter and exit at a preset position. According to the technical scheme, the door lock can be simpler in structure, more efficient in installation and more convenient to use.

Description

Technical Field

[0001] The present application relates to the technical field of locks, and in particular to a door lock. Background Art

[0002] Locks have a history of thousands of years. Although technology is changing with each passing day and locks are constantly evolving, traditional mechanical locks are still widely used due to their reliability and security. The existing double-sided floor locks have a complex structure, which makes them difficult to install and inconvenient to use.

[0003] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0004] The embodiments of the present application provide a door lock to solve or alleviate one or more of the technical problems mentioned above.

[0005] As one aspect of an embodiment of the present application, an embodiment of the present application provides a door lock, including:

[0006] A first lock box, comprising a first lock shell, wherein the first lock shell is provided with a first central hole;

[0007] A second lock box, comprising a second lock shell, wherein the second lock shell is provided with a second central hole, and the first lock box and the second lock box are supported on two sides of the bottom of the door panel;

[0008] A knob rotatably located in the second lock box; the knob comprises a rotation control end and a connection end, the rotation control end is located outside the second lock box, and the connection end extends into the second center hole so as to be located in the second lock box;

[0009] The lock core structure comprises a lock core barrel and a linkage shaft; the lock core barrel penetrates into the first central hole and is rotatably located in the first lock box; one end of the linkage shaft is connected to the connecting end, and the other end is inserted into the lock core barrel;

[0010] A toggle structure, located in the second lock box, the toggle structure is connected to the connecting end;

[0011] a locking tongue structure, the locking tongue structure being slidably disposed in the second lock box;

[0012] The linkage shaft links the lock cylinder and the knob, and when the lock cylinder or the knob rotates, the toggle structure follows the rotation and controls the entry and exit of the lock tongue structure at a preset position.

[0013] Optionally, the toggle structure includes a first linkage ring and a second linkage ring;

[0014] The first linkage ring is fixedly sleeved on the connection end, and the second linkage ring is slidably sleeved on the connection end; the first linkage ring and the second linkage ring are stacked and arranged, and the second linkage ring is closer to the connection end than the first linkage ring;

[0015] A protrusion is provided on the outer edge of the first linkage ring, and the protrusion faces the second linkage ring;

[0016] A first limiting hook and an extension portion are provided on the outer edge of the second linkage ring; the first limiting hook faces the first linkage ring;

[0017] Correspondingly, the locking tongue structure includes a pushing portion and a locking tongue;

[0018] The pushing portion is provided with a connecting portion, a first side wing and a second side wing; one side of the connecting portion is connected to the locking tongue, and the other side is connected to the first side wing and the second side wing, and the first side wing and the second side wing form a passage for the connecting end to pass through; wherein a limiting hole is provided on the first side wing, and the limiting hole is used to accommodate a first limiting hook;

[0019] Among them, when the knob rotates and drives the first linkage ring to rotate a certain angle, the protrusion presses against the extension part and then drives the second linkage ring to rotate, the first limiting hook of the second linkage ring moves from the first position of the limiting hole to the second position, and then pushes the pushing part to move, thereby driving the lock tongue to enter and exit the second lock box.

[0020] Optionally, the toggle structure further includes a tension spring;

[0021] The tension spring is provided with a first hook ring at one end and a second hook ring at the other end;

[0022] Correspondingly, the second linkage ring is provided with a second limiting hook, and the second limiting hook and the first limiting hook are arranged opposite to each other on the second linkage ring;

[0023] The second side wing is provided with a third limiting hook;

[0024] Wherein, the first hook ring is inserted into the second limiting hook, and the second hook ring is inserted into the third limiting hook.

[0025] Optionally, the first lock box is provided with a first fixing block, the first fixing block is located in the first center hole, and the lock cylinder is positioned in the first center hole;

[0026] A key slot is provided in the axial direction of the lock core cylinder, and a lock pin is provided inside the key slot;

[0027] When the key is inserted into the lock cylinder, the tooth shape of the key pushes the lock pin, so that the dividing line of the lock pin is aligned on the shear line, causing the lock cylinder to rotate.

[0028] Optionally, the linkage shaft includes an inner shaft and an outer shaft;

[0029] Wherein, the outer shaft is connected to the connecting end; one end of the inner shaft is inserted into the lock cylinder, and the other end is inserted into the outer shaft.

[0030] Optionally, the outer shaft is provided with a spring, an open groove, an annular groove and a retaining spring; wherein:

[0031] The spring abuts between the bottom of the outer shaft and the inner shaft;

[0032] The opening groove is arranged on the side wall of the outer shaft, and the notch of the opening groove faces the lock cylinder;

[0033] The annular groove is arranged on the outer wall of the outer shaft, and the annular groove is located at one end of the outer shaft close to the lock cylinder;

[0034] The clamping ring is arranged in the annular groove to block the notch of the opening groove;

[0035] Correspondingly, a limit pin is provided at one end of the inner shaft close to the knob, and the inner shaft is also provided with a groove for inserting a key;

[0036] The limit pin is matched with the opening slot, the limit pin can slide in the opening slot, and the maximum stroke is limited by the retaining spring.

[0037] Optionally, the second lock box is provided with a second fixing block, the second fixing block is located in the second center hole, and the connecting end is positioned in the second center hole;

[0038] A first protrusion is provided on a side of the second fixing block close to the first lock box, and a second protrusion is provided on a circumferential surface of the connecting end;

[0039] When the knob is rotated by a certain angle, the first protrusion resists the rotation of the second protrusion to limit further rotation of the knob.

[0040] Optionally, the first lock box further comprises a first lock cover, and the first lock cover is provided with a first through hole;

[0041] Wherein, the lock core tube passes through the first through hole.

[0042] Optionally, the second lock box further includes a second lock cover, and the second lock cover is further provided with a second through hole;

[0043] Wherein, the linkage shaft passes through the second through hole.

[0044] Optionally, the first lock box and the second lock box are both made of metal material.

[0045] The above technical solution adopted in the embodiment of the present application may have the following advantages:

[0046] The lock cylinder and the knob are linked by the linkage shaft, and when the lock cylinder or the knob rotates, the toggle structure follows the rotation and controls the in and out of the lock tongue mechanism at a preset position. In this way, the door lock structure can be simpler, the installation is more efficient and the use is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0048] Figure 1 It is a schematic diagram of the structure of the door lock provided in an embodiment of the present application.

[0049] Figure 2 It is a schematic diagram of the structure of the first lock box provided in an embodiment of the present application.

[0050] Figure 3 It is an exploded view of the first lock box provided in the embodiment of the present application.

[0051] Figure 4 It is a schematic diagram of the structure of the second lock box provided in an embodiment of the present application.

[0052] Figure 5 It is a schematic diagram of the internal structure of the second lock box provided in an embodiment of the present application.

[0053] Figure 6 It is an exploded view of the second lock box provided in the embodiment of the present application.

[0054] Figure 7 It is a schematic diagram of the structure of the linkage shaft provided in an embodiment of the present application.

[0055] Description of reference numerals:

[0056] 1. First lock box; 11. First lock shell; 111. First center hole; 12. First fixing block; 13. First lock cover; 131. First through hole; 2. Second lock box; 21. Second lock shell; 211. Second center hole; 22. Second fixing block; 221. First convex block; 23. Second lock cover; 231. Second through hole; 3. Knob; 31. Second convex block; 4. Lock core structure; 41. Lock core cylinder; 411. Key slot; 42. Linkage shaft; 421. Inner shaft; 4211. Limit pin; 4212. Groove; 422. Outer shaft; 4 221. spring; 4222. opening groove; 4223. annular groove; 4224. retaining spring; 5. toggle structure; 51. first linkage ring; 511. protrusion; 52. second linkage ring; 521. first limiting hook; 522. extension part; 523. second limiting hook; 53. tension spring; 531. first hook ring; 532. second hook ring; 6. locking tongue structure; 61. pushing part; 611. connecting part; 612. first side wing; 6121. limiting hole; 613. second side wing; 6131. ​​third limiting hook; 62. locking tongue. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0059] To this end, the embodiment of the present application provides a door lock technical solution. The lock cylinder and the knob are linked by the linkage shaft. When the lock cylinder or the knob rotates, the toggle structure follows the rotation and controls the in and out of the lock tongue mechanism at a preset position. In this way, the door lock structure can be simpler, the installation is more efficient, and the use is more convenient. See below for details.

[0060] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0061] like Figures 1 to 7 As shown, the door lock may include: a first lock box 1, a second lock box 2, a knob 3, a lock core structure 4, a toggle structure 5 and a lock tongue structure 6.

[0062] In an optional embodiment, the first lock box 1 includes a first lock housing 11, and the first lock housing 11 is provided with a first central hole 111. The first central hole 111 is rectangular, and may also be other shapes.

[0063] The second lock box 2 includes a second lock shell 21, and the second lock shell 21 is provided with a second central hole 211. The first lock box 1 and the second lock box 2 are supported on both sides of the bottom of the door panel. The first lock box 1 and the second lock box 2 are fixed on both sides of the bottom of the door panel. The first lock box 1 can be installed on the inner side of the door panel, and the second lock box 2 can be installed on the inner side of the door panel.

[0064] The knob 3 is rotatably located in the second lock box 2. The knob 3 includes a rotation control end and a connection end, the rotation control end is located outside the second lock box 2, and the connection end extends into the second center hole 211 so as to be located in the second lock box 2. The knob 3 is a T-shaped knob, and the knob 3 can be made of nylon material.

[0065] The lock core structure 4 includes a lock core barrel 41 and a linkage shaft 42. The lock core barrel 41 penetrates the first central hole 111 and is rotatably located in the first lock box 1. One end of the linkage shaft 42 is connected to the connecting end, and the other end is inserted into the lock core barrel 41. The lock core barrel 41 of the lock core structure 4 extends into the first lock box, and the linkage shaft 42 of the lock core structure 4 extends into the second lock box 2. The first lock box 1 and the second lock box 2 provide support and partial accommodation space for the lock core structure 4. The lock core structure 4 can be made of brass.

[0066] The toggle structure 5 is located in the second lock box 2 and is connected to the connection end. The toggle structure 5 is used to toggle the lock tongue structure 6 so as to enable the lock tongue structure 6 to enter and exit.

[0067] The locking tongue structure 6 is slidably located in the second lock box 2 .

[0068] The linkage shaft 42 links the lock cylinder 41 and the knob 3. When the lock cylinder 41 or the knob 3 rotates, the toggle structure 5 follows the rotation and controls the in and out of the lock tongue structure 6 at a preset position. The linkage shaft 42 is connected to the knob 3 and links with the lock cylinder 41 to form an integral linkage relationship. When the key is inserted into the lock cylinder 41 and rotated, the lock cylinder 41 will drive the linkage shaft 42 to rotate and then drive the knob 3 to rotate. When the knob 3 is rotated, the knob 3 transmits the rotation action to the lock cylinder 41 through the linkage shaft 42. When the lock cylinder structure 4 rotates to the preset position, the lock tongue structure 5 will extend or retract in the second lock box 2 to complete the locking or unlocking operation of the door.

[0069] In this embodiment, the lock cylinder 41 and the knob 3 are linked by the linkage shaft 42. When the lock cylinder 41 or the knob 3 rotates, the toggle structure 5 rotates accordingly and controls the in and out of the lock bolt mechanism 6 at a preset position. In this way, the door lock structure can be simpler, the installation is more efficient, and the use is more convenient.

[0070] In an optional embodiment, the toggle structure 5 includes a first linkage ring 51 and a second linkage ring 52 .

[0071] The first linkage ring 51 is fixedly sleeved on the connection end, and the second linkage ring 52 is slidably sleeved on the connection end. The first linkage ring 51 and the second linkage ring 52 are stacked and arranged, and the second linkage ring 52 is closer to the connection end than the first linkage ring 51. A snap ring can also be arranged closer to the connection end, and the snap ring, the first linkage ring 51 and the second linkage ring 52 are stacked, and the snap ring can further limit the first linkage ring 51 and the second linkage ring 52.

[0072] The outer edge of the first linkage ring 51 is provided with a protrusion 511, and the protrusion 511 faces the second linkage ring 52. The number of protrusions 511 is two, or other numbers. The protrusion 511 is linked with the extension part 522 of the second linkage ring 52.

[0073] The outer edge of the second linkage ring 52 is provided with a first limiting hook 521 and an extension portion 522. The first limiting hook 521 faces the first linkage ring 51. The extension portion 522 is matched with the protrusion 511 to achieve a better matching effect.

[0074] Correspondingly, the locking tongue structure 6 includes a pushing portion 61 and a locking tongue 62 .

[0075] The pushing portion 61 is provided with a connecting portion 611, a first side wing 612 and a second side wing 613. One side of the connecting portion 611 is connected to the locking tongue 62, and the other side is connected to the first side wing 612 and the second side wing 613. The first side wing 612 and the second side wing 613 form a passage for the connecting end to pass through. Among them, the first side wing 612 is provided with a limiting hole 6121, and the limiting hole 6121 is used to accommodate the first limiting hook 521. The pushing portion 61 is used to push the locking tongue 62 in and out. The first side wing 612 and the second side wing 613 are symmetrically distributed.

[0076] When the knob 3 rotates to drive the first linkage ring 51 to rotate a certain angle, the protrusion 511 abuts against the extension part 522 and drives the second linkage ring 52 to rotate, and the first limiting hook 521 of the second linkage ring 52 moves from the first position of the limiting hole 6121 to the second position, and then pushes the pushing part 61 to move, thereby driving the lock tongue 62 to enter and exit the second lock box 2. In this process, the first limiting hook 521 pushes the pushing part 61 to move along the preset track, thereby driving the lock tongue 62 to enter and exit the second lock box 2, thereby realizing the locking or unlocking operation of the door lock.

[0077] In this embodiment, the first linkage ring 51 and the second linkage ring 52 are linked to drive the bolt connection structure 6 to move in and out, thereby realizing effective linkage between the operation of the knob 3 and the control of the bolt. This structural design makes the operation of the door lock more accurate and reliable, and enhances the safety and convenience of the door lock.

[0078] In an optional embodiment, the toggle structure 5 further includes a tension spring 53 .

[0079] One end of the extension spring 53 is provided with a first hook ring 531, and the other end is provided with a second hook ring 532. The extension spring is used to apply a pulling force between the second linkage ring 52 and the pushing portion 61 to maintain or restore their relative positions.

[0080] Correspondingly, the second linkage ring 52 is provided with a second limiting hook 523, and the second limiting hook 523 and the first limiting hook 521 are arranged opposite to each other on the second linkage ring 52. The second limiting hook 523 is used to hook the first hook ring 531 of the tension spring 53.

[0081] The second side wing 613 is provided with a third limiting hook 6131 .

[0082] The first hook 531 is inserted into the second limit hook 523, and the second hook 532 is inserted into the third limit hook 6131. ​​The extension and retraction strokes of the tension spring 53 and the locking tongue structure 6 are just in a steady state. When extending, the position of the tension spring 53 is just not too compressed or deformed, and the same is true when retracting. In this way, the tension spring 53 is not easily damaged by long-term extension and retraction.

[0083] In this embodiment, the tension spring 53 applies appropriate tension when the lock tongue structure 6 moves, making the entire operating system more stable and smooth. The tension of the spring can reduce the impact of the knob operation and keep the lock tongue structure 6 in the preset position of locking or unlocking, thereby avoiding sudden movement to cause wear or damage to the components and keeping the lock tongue structure 6 in the preset position, thereby improving the stability and service life of the door lock system.

[0084] In an optional embodiment, the first lock box 1 is provided with a first fixing block 12, which is located in the first center hole 111 and positions the lock cylinder 41 in the first center hole 111. The first fixing block 12 is used to limit the lock cylinder 41, which can further improve the stability during use and prevent the lock cylinder 41 from shaking or falling off.

[0085] A key slot 411 is provided in the axial direction of the lock cylinder 41, and a lock pin is provided inside the key slot 411. A plurality of lock pins are installed inside the key slot 411, and these lock pins prevent the lock cylinder 41 from rotating when no key is inserted.

[0086] When the key is inserted into the lock cylinder 41, its tooth shape pushes the lock pin so that the dividing line of the lock pin is aligned on the shear line, so that the lock cylinder 41 rotates. After the lock pin is aligned, when the key drives the lock cylinder 41 to rotate, the linkage shaft 42 drives the lock tongue structure 6 to complete the opening and closing operation of the door lock.

[0087] In this embodiment, the design of the first lock box 1 and the first fixing block 12 can stably and accurately install the lock cylinder 41 in the first lock box 1. The key slot 411 guides the key to be inserted, and only a matching key can push the lock pin to the correct position, which can improve the safety of the door lock.

[0088] In an optional embodiment, the linkage shaft 42 includes an inner shaft 421 and an outer shaft 422 .

[0089] The outer shaft 422 is connected to the connecting end. One end of the inner shaft 421 is inserted into the lock cylinder 41, and the other end is inserted into the outer shaft 422. The linkage shaft 42 can realize the rotational motion transmission between the lock cylinder 41 and the knob 3 through the cooperation of the inner shaft 421 and the outer shaft 422. The inner shaft 421 is inserted into the lock cylinder 41, so that the rotation of the lock cylinder 41 can directly drive the movement of the linkage shaft 42.

[0090] In this embodiment, the inner shaft 421 is respectively linked with the lock cylinder 41 and the outer shaft 42, and the outer shaft is connected with the knob 3. When the lock cylinder 41 or the knob 3 is rotated, the two rotate together to control the entry and exit of the lock tongue structure 6 at a preset position, thereby realizing the linkage between the first lock box 1 and the second lock box 2, thereby making the door lock structure simpler and more convenient to use.

[0091] In an optional embodiment, the outer shaft 422 is provided with a spring 4221, an opening groove 4222, an annular groove 4223 and a retaining spring 4224; wherein:

[0092] The spring 4221 abuts against the bottom of the outer shaft 422 and between the inner shaft 421. The spring 4221 is installed between the bottom of the outer shaft 422 and the inner shaft 421 to provide elastic force to adapt to door panels of different thicknesses.

[0093] The opening groove 4222 is arranged on the side wall of the outer shaft 422, and the notch of the opening groove 4222 faces the lock cylinder 41. The opening groove 4222 is used to provide a sliding path for the limiting pin 4211 of the inner shaft 421.

[0094] The annular groove 4223 is arranged on the outer wall of the outer shaft 422, and the annular groove 4223 is located at one end of the outer shaft 422 close to the lock cylinder 41. The annular groove 4223 provides a fixed position for installing a retaining ring 4224 to limit the sliding range of the inner shaft 421.

[0095] The clamping spring 4224 is disposed in the annular groove 4223 to block the notch of the opening groove 4222. The clamping spring 4224 can prevent the limiting pin 4211 of the inner shaft 421 from exceeding a predetermined sliding range.

[0096] Correspondingly, a stop pin 4211 is provided at one end of the inner shaft 421 close to the knob 3, and the inner shaft 421 is also provided with a groove 4212 for inserting a key. After the key is inserted into the groove 4212, the sliding and rotation of the inner shaft 421 can be directly controlled, further driving the operation of the outer shaft 422 and the lock cylinder 41.

[0097] The limiting pin 4211 is matched with the opening slot 4222, and the limiting pin 4211 can slide in the opening slot 4222, and the maximum stroke is limited by the clamping spring 4224. The limiting pin 4211 is matched with the opening slot 4222 to achieve a better limiting effect.

[0098] In this embodiment, the design of the opening groove 4222 and the limit pin 4211 allows the inner shaft 421 to slide in the outer shaft 422, but its travel is limited by the retaining spring 4224, thereby preventing the inner shaft from moving excessively and improving the safety of the door lock. The combined design of the annular groove 4223 and the retaining spring 4224 can improve the stability of the inner and outer shafts and achieve control of their relative motion range, thereby improving the safety and reliability of the entire lock.

[0099] In an optional embodiment, the second lock box 2 is provided with a second fixing block 22, which is located in the second center hole 211 and positions the end of the knob 3 in the second center hole 211. The second fixing block 22 provides support for the knob 3. The second fixing block 22 limits the end of the knob 3 in the second center hole 211 by fastening or snapping.

[0100] A first protrusion 221 is provided on one side of the second fixing block 22 close to the first lock box 1, and a second protrusion 31 is provided on the circumferential surface of the end of the knob 3. The first protrusion 221 interacts with the second protrusion 31 at the end of the knob 3 to form a limiting structure.

[0101] When the knob 3 rotates to a certain angle, the first protrusion 221 resists the rotation of the second protrusion 31, thereby limiting further rotation of the knob 3. The mutual resistance between the first protrusion 221 and the second protrusion 31 limits the maximum rotation angle of the knob 3, preventing the knob 3 from exceeding the preset operating range.

[0102] In this embodiment, the cooperation between the first protrusion 221 and the second protrusion 31 forms a mechanical limit structure to limit the rotation angle of the knob 3. The limit structure prevents excessive rotation of the knob 3 and avoids malfunction or damage of the lock due to excessive operation.

[0103] In an optional embodiment, the first lock box 1 further includes a first lock cover 13, and the first lock cover 13 is provided with a first through hole 131. The first lock cover 13 is adapted to the first lock housing 12, and the first through hole 131 is reserved for the lock cylinder 41. The lock cylinder 41 passes through the first through hole 131.

[0104] In an optional embodiment, the second lock box 2 includes a second lock cover 23, and the second lock cover 23 is further provided with a second through hole 231. The second lock cover 23 is adapted to the second lock housing 21, and the second through hole 231 is reserved for the linkage shaft 42. The linkage shaft 42 passes through the second through hole 231.

[0105] In an optional embodiment, the first lock box 1 and the second lock box 2 are both made of metal materials. The first lock box 1 and the second lock box 2 can also be made of other materials according to actual conditions.

[0106] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0107] For the convenience of description, the orientation or position relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" is usually based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these directional words 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 cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0108] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0109] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0110] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0111] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0112] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0113] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A door lock, characterized in that: include: A first lock box (1) comprises a first lock shell (11), wherein the first lock shell (11) is provided with a first central hole (111); The second lock box (2) comprises a second lock shell (21), the second lock shell (21) is provided with a second central hole (211), the first lock box (1) and the second lock box (2) are supported on two side surfaces of the bottom of the door panel; a knob (3) rotatably located in the second lock box (2); the knob (3) comprises a rotation control end and a connection end, the rotation control end is located outside the second lock box (2), and the connection end extends into the second center hole (211) and is thus located inside the second lock box (2); The lock core structure (4) comprises a lock core barrel (41) and a linkage shaft (42); the lock core barrel (41) penetrates into the first central hole (111) and is rotatably located in the first lock box (1); one end of the linkage shaft (42) is connected to the connecting end, and the other end is inserted into the lock core barrel (41); A toggle structure (5) is located in the second lock box (2), and the toggle structure (5) is connected to the connection end; A locking tongue structure (6), wherein the locking tongue structure (6) is slidably located in the second lock box (2); The linkage shaft (42) links the lock cylinder (41) and the knob (3), and when the lock cylinder (41) or the knob (3) rotates, the toggle structure (5) follows the rotation and controls the entry and exit of the lock tongue structure (6) at a preset position.

2. The door lock according to claim 1, characterized in that: The toggle structure (5) comprises a first linkage ring (51) and a second linkage ring (52); The first linkage ring (51) is fixedly sleeved on the connection end, and the second linkage ring (52) is slidably sleeved on the connection end; the first linkage ring (51) and the second linkage ring (52) are stacked and arranged, and the second linkage ring (52) is closer to the connection end than the first linkage ring (51); A protrusion (511) is provided on the outer edge of the first linkage ring (51), and the protrusion (511) faces the second linkage ring (52); The outer edge of the second linkage ring (52) is provided with a first limiting hook (521) and an extension portion (522); the first limiting hook (521) faces the first linkage ring (51); Correspondingly, the locking tongue structure (6) comprises a pushing portion (61) and a locking tongue (62); The pushing portion (61) is provided with a connecting portion (611), a first side wing (612) and a second side wing (613); one side of the connecting portion (611) is connected to the locking tongue (62), and the other side is connected to the first side wing (612) and the second side wing (613), and the first side wing (612) and the second side wing (613) form a passage for the connecting end to pass through; wherein a limiting hole (6121) is provided on the first side wing (612), and the limiting hole (6121) is used to accommodate the first limiting hook (521); When the knob (3) rotates to drive the first linkage ring (51) to rotate by a certain angle, the protrusion (511) abuts against the extension portion (522) and thereby drives the second linkage ring (52) to rotate, and the first limiting hook (521) of the second linkage ring (52) moves from the first position of the limiting hole (6121) to the second position, and then pushes the pushing portion (61) to move, thereby driving the lock tongue (62) to enter and exit the second lock box (2).

3. The door lock according to claim 2, characterized in that: The toggle structure (5) further includes a tension spring (53); The tension spring (53) is provided with a first hook ring (531) at one end and a second hook ring (532) at the other end; Correspondingly, the second linkage ring (52) is provided with a second limiting hook (523), and the second limiting hook (523) and the first limiting hook (521) are arranged opposite to each other on the second linkage ring (52); The second side wing (613) is provided with a third limiting hook (6131); Wherein, the first hook ring (531) is inserted into the second limiting hook (523), and the second hook ring (532) is inserted into the third limiting hook (6131).

4. The door lock according to claim 1, characterized in that: The first lock box (1) is provided with a first fixing block (12), the first fixing block (12) is located in the first center hole (111), and the lock cylinder (41) is positioned in the first center hole (111); The lock core barrel (41) is provided with a key slot (411) in the axial direction, and a lock pin is provided inside the key slot (411); When the key is inserted into the lock cylinder (41), the tooth shape thereof pushes the lock pin, so that the dividing line of the lock pin is aligned on the shear line, causing the lock cylinder (41) to rotate.

5. The door lock according to claim 1, characterized in that: The linkage shaft (42) comprises an inner shaft (421) and an outer shaft (422); The outer shaft (422) is connected to the connecting end; one end of the inner shaft (421) is inserted into the lock cylinder (41), and the other end is inserted into the outer shaft (422).

6. The door lock according to claim 5, characterized in that: The outer shaft (422) is provided with a spring (4221), an opening groove (4222), an annular groove (4223) and a retaining spring (4224); wherein: The spring (4221) abuts against the bottom of the outer shaft (422) and between the inner shaft (421); The opening groove (4222) is arranged on the side wall of the outer shaft (422), and the notch of the opening groove (4222) faces the lock cylinder (41); The annular groove (4223) is arranged on the outer wall of the outer shaft (422), and the annular groove (4223) is located at one end of the outer shaft (422) close to the lock cylinder (41); The clamping ring (4224) is arranged in the annular groove (4223) to seal the notch of the opening groove (4222); Correspondingly, a stop pin (4211) is provided at one end of the inner shaft (421) close to the knob (3), and the inner shaft (421) is also provided with a groove (4212) for inserting a key; The limit pin (4211) is matched with the opening slot (4222), the limit pin (4211) is slidable in the opening slot (4222), and the maximum stroke is limited by the retaining spring (4224).

7. The door lock according to claim 1, characterized in that: The second lock box (2) is provided with a second fixing block (22), the second fixing block (22) is located in the second center hole (211), and the connecting end is positioned in the second center hole (211); A first convex block (221) is provided on a side of the second fixing block (22) close to the first lock box (1), and a second convex block (31) is provided on a circumferential surface of the connecting end; When the knob (3) is rotated by a certain angle, the first protrusion (221) resists the rotation of the second protrusion (31) to limit further rotation of the knob (3).

8. The door lock according to claim 1, characterized in that: The first lock box (1) further comprises a first lock cover (13), wherein the first lock cover (13) is provided with a first through hole (131); Wherein, the lock core barrel (41) passes through the first through hole (131).

9. The door lock according to claim 1, characterized in that: The second lock box (2) further comprises a second lock cover (23), and the second lock cover (23) is further provided with a second through hole (231); Wherein, the linkage shaft (42) passes through the second through hole (231).

10. The door lock according to claim 1, characterized in that: The first lock box (1) and the second lock box (2) are both made of metal material.

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