door lock

Abstract

The application discloses a door lock, which comprises a front lock, a rear lock and a lock body, the lock body is arranged between the front lock and the rear lock, and a square shaft assembly hole and a reverse lock piece assembly hole are respectively arranged on the lock body; the front lock is provided with a fixed part; the rear lock comprises a rear lock panel, a square shaft and a reverse lock piece; the rear lock panel is fixedly connected with the fixed part; one or two avoiding holes are arranged in the rear lock panel along the thickness direction; one avoiding hole is arranged opposite to the square shaft assembly hole or the reverse lock piece assembly hole, so that the square shaft or the reverse lock piece is assembled on the lock body through the avoiding hole after the rear lock panel is fixedly connected with the fixed part; or two avoiding holes are arranged opposite to the square shaft assembly hole and the reverse lock piece assembly hole respectively; and the rear lock can be connected with the lock body through the square shaft and / or the reverse lock piece. According to the technical scheme, the square shaft, the reverse lock piece and the motor rotating hole do not need to be respectively aligned with the square shaft assembly hole, the reverse lock piece assembly hole and the lock core rotating piece on the lock body in the assembly process of the rear lock panel, so that the assembly difficulty of the door lock is reduced.

Description

Technical Field

[0001] This application relates to the field of door lock device technology, and in particular to a door lock. Background Technology

[0002] With the development of society and economy and the progress of technology, the gradual development of door lock devices has made door locks increasingly complex, especially smart door locks, which not only have complex mechanical structures, but also intelligent electronic components.

[0003] Door locks typically consist of a front lock, a rear lock, and a lock body located between the front and rear locks. During assembly, the front lock and lock body are usually fixed first, and then the rear lock is installed and fixed. The square shaft, deadbolt plate, and motor rotation hole of the rear lock are all mounted on the rear lock panel. Therefore, when installing the rear lock, the square shaft, deadbolt plate, and motor rotation hole must be aligned with the square shaft mounting hole, deadbolt plate mounting hole, and lock cylinder rotation plate on the lock body to ensure accurate installation and fixation.

[0004] However, the square shaft and the deadbolt are long and of different lengths. Aligning the square shaft, the deadbolt, and the motor rotation hole with the square shaft mounting hole, the deadbolt mounting hole, and the lock cylinder rotation hole on the lock body is quite difficult. This makes installation very difficult for installers, which greatly affects the assembly efficiency of the door lock. Summary of the Invention

[0005] The main purpose of this application is to provide a door lock that eliminates the need to simultaneously align the square shaft, the deadbolt plate, and the motor rotation hole with the square shaft assembly hole, the deadbolt plate assembly hole, and the lock cylinder rotation plate on the lock body during the assembly process of the rear lock panel, thereby reducing the assembly difficulty of the door lock.

[0006] To achieve the above objectives, the door lock proposed in this application includes a front lock, a rear lock, and a lock body; wherein,

[0007] The lock body is located between the front lock and the rear lock, and the lock body is provided with a square shaft mounting hole and a deadbolt mounting hole respectively.

[0008] The front lock is provided with a fixing part, and the front lock is also linked with the lock body;

[0009] The rear lock includes a rear lock panel, a square shaft, and a deadbolt. The rear lock panel is fixedly connected to the fixing part, and the rear lock panel is provided with one or two clearance holes through the thickness direction.

[0010] When there is one clearance hole, the clearance hole is set directly opposite the square shaft mounting hole or the anti-lock plate mounting hole, so that after the rear lock panel is fixedly connected to the fixing part, the square shaft or the anti-lock plate can be assembled on the lock body through the clearance hole;

[0011] When there are two clearance holes, the two clearance holes are respectively positioned opposite the square shaft mounting hole and the anti-lock plate mounting hole, so that after the rear lock panel is fixedly connected to the fixing part, the square shaft and the anti-lock plate can be assembled on the lock body through the corresponding clearance holes;

[0012] The rear lock can be linked to the lock body via the square shaft and / or the anti-lock plate.

[0013] In some embodiments of this application, the rear lock panel is provided with a first clearance hole through the thickness direction, the rear lock also includes a handle, one end of the square shaft passes through the first clearance hole and is fitted into the square shaft mounting hole, and the other end of the square shaft is connected to the handle.

[0014] In some embodiments of this application, the rear lock further includes a bushing, which is rotatably mounted on the rear lock panel. The bushing has a through groove along its length, and the groove is positioned opposite the first clearance hole. The handle is fixedly connected to the end of the bushing away from the lock body.

[0015] The end of the square shaft away from the lock body is slidably installed in the groove so as to be connected to the handle through the bushing;

[0016] The square shaft is provided with a stop boss in the circumference. The stop boss abuts against the side of the lock body near the rear lock to limit the length of the square shaft entering the square shaft mounting hole.

[0017] In some embodiments of this application, the rear lock further includes a first elastic member, which is installed in the groove, one end of which elastically abuts against the square shaft, and the other end of which elastically abuts against the handle.

[0018] In some embodiments of this application, the bushing has a limiting groove at one end away from the lock body, the handle includes a handle body and a nut, the handle body has a mounting hole, the mounting hole has a positioning protrusion on its periphery, a portion of the bushing extends into the handle body through the mounting hole, and the positioning protrusion cooperates with the limiting groove, and the nut is threaded to the outer periphery of the bushing.

[0019] In some embodiments of this application, the rear lock panel is provided with a second clearance hole through the thickness direction, the rear lock also includes a knob, one end of the anti-lock plate passes through the second clearance hole and is fitted into the anti-lock plate mounting hole, and the other end of the anti-lock plate is connected to the knob.

[0020] In some embodiments of this application, the anti-lock plate is provided with a plurality of adjustment holes along the length direction, the knob includes a rotating body and a mounting rod connected to each other, the rotating body is rotatably mounted on the rear lock panel, and the rotating body also covers the second clearance hole;

[0021] The mounting rod extends into the second clearance hole, and the mounting rod is provided with a sliding groove along its length, with the sliding groove extending through one end near the lock body.

[0022] The slide groove is also provided with a fixing pin, and part of the anti-locking plate is installed in the slide groove. The fixing pin can cooperate with any of the adjustment holes.

[0023] In some embodiments of this application, the mounting rod is provided with a receiving groove at one end near the rotating body, and the knob further includes a limiting block and a second elastic member. The limiting block is movably disposed in the receiving groove, and the second elastic member is elastically supported between the limiting block and the bottom of the receiving groove, so as to drive the limiting block to always have a tendency to extend out of the receiving groove. The second clearance hole is provided with an annular protrusion that cooperates with the limiting block.

[0024] In some embodiments of this application, a guide ramp is provided around the periphery of the second clearance hole.

[0025] In some embodiments of this application, the rotating body has a catch ball on the side facing the rear lock panel, and the rear lock panel has a locking hole that engages with the catch ball.

[0026] Through the above-described technical solution, the user of this door lock can first fix the front lock and the lock body, and then fix the rear lock panel and the front lock using the fixing part. In the assembly process of the rear lock panel, since the rear lock panel is provided with one or two clearance holes through the thickness direction, one clearance hole is set opposite to the square shaft assembly hole or the deadbolt plate assembly hole, or the two clearance holes are respectively set opposite to the square shaft assembly hole and the deadbolt plate assembly hole, the assembly process of the rear lock panel does not require simultaneously aligning the square shaft, the deadbolt plate, and the motor rotation hole with the square shaft assembly hole, the deadbolt plate assembly hole, and the lock cylinder rotation plate on the lock body. The rear lock panel can be fixed to the front lock, and then the square shaft and / or the deadbolt plate is assembled onto the lock body. This reduces the assembly difficulty of the door lock and thus greatly improves the assembly efficiency of the door lock. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is an exploded view of an embodiment of the door lock of this application;

[0029] Figure 2 for Figure 1 Assembly sectional view of the central door lock;

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 for Figure 1 Explosion-proof diagram of the central locking body and the rear locking body;

[0032] Figure 5 for Figure 4 Exploded view of the center bushing and handle;

[0033] Figure 6 for Figure 1 Another assembly section view of the central door lock;

[0034] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0035] Figure 8 for Figure 1 Another exploded diagram of the central locking body and the rear locking body;

[0036] Figure 9 for Figure 8 Schematic diagram of the middle shell structure;

[0037] Figure 10 for Figure 8 An explosion diagram of the middle knob.

[0038] Explanation of icon numbers:

[0039] 100. Door lock; 10. Front lock; 11. Fixing part; 20. Rear lock; 21. Rear lock panel; 211. Bracket; 212. Housing; 213. Annular protrusion; 214. Locking hole; 22. Square shaft; 221. Stop boss; 23. Anti-lock plate; 231. Adjustment hole; 24. First clearance hole; 25. Second clearance hole; 251. Guide ramp; 26. Handle; 261. Handle body; 2611. Mounting hole; 2612. Positioning protrusion 262. Handle cover; 263. Nut; 27. Bushing; 271. Groove; 272. Limiting groove; 28. First elastic element; 29. ​​Knob; 291. Rotating body; 295. Cushion; 292. Mounting rod; 2921. Slide groove; 2922. Fixing pin; 2923. Receiving groove; 293. Limiting block; 294. Second elastic element; 30. Lock body; 31. Square shaft mounting hole; 32. Anti-lock plate mounting hole; 33. Lock cylinder rotating plate.

[0040] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0044] This invention proposes a door lock 100, which can be applied to door lock devices with intelligent electronic components, as well as door lock devices with purely mechanical mechanisms. Please refer to the references. Figures 1 to 6 In this embodiment of the invention, the door lock 100 includes a front lock 10, a rear lock 20, and a lock body 30.

[0045] The lock body 30 is located between the front lock 10 and the rear lock 20, and the lock body 30 has a square shaft mounting hole 31 and a deadbolt mounting hole 32 respectively. The lock body 30 is usually embedded in the door panel, with one side exposed on the side of the door panel so that the bolt of the lock body 30 can extend and cooperate with the door frame. The front lock 10 is usually located on the front side of the door panel. In the intelligent door lock 100 device, the front lock 10 may have modules such as face recognition, fingerprint recognition, and mechanical structure. The rear lock 20 is usually located on the rear side of the door panel.

[0046] The front lock 10 is provided with a fixing part 11, and the front lock 10 is also linked with the lock body 30. When the front lock 10 is assembled on the door panel, the length direction of the front lock 10 is usually perpendicular to the horizontal plane. The fixing part 11 may include two or more sub-fixing parts, and the sub-fixing parts are spaced apart. The upper end and the lower end of the front lock 10 may each have at least one sub-fixing part. It is understood that the fixing part 11 usually avoids the lock body 30, but it may also pass through the lock body 30.

[0047] It should be noted that the linkage between the front lock 10 and the lock body 30 means that the facial recognition, fingerprint recognition, mechanical structure and other modules of the front lock 10 can control the lock body 30, so that the front lock 10 can control the closing or opening of the lock body 30.

[0048] The rear lock 20 includes a rear lock panel 21, a square shaft 22, and a deadbolt 23. The rear lock panel 21 is fixedly connected to the fixing part 11. The rear lock panel 21 is provided with one or two clearance holes through its thickness direction. When there is only one clearance hole, the clearance hole is set opposite to the square shaft mounting hole 31 or the deadbolt mounting hole 32, so that after the rear lock panel 21 is fixedly connected to the fixing part 11, the square shaft 22 or the deadbolt 23 can be assembled onto the lock body 30 through the clearance hole. When there are two clearance holes, the two clearance holes are respectively set opposite to the square shaft mounting hole 31 and the deadbolt mounting hole 32, so that after the rear lock panel 21 is fixedly connected to the fixing part 11, the square shaft 22 and the deadbolt 23 can be assembled onto the lock body 30 through the corresponding clearance holes. The rear lock 20 can be linked with the lock body 30 through the square shaft 22 and / or the deadbolt 23.

[0049] In one embodiment, the fixing part 11 is a threaded hole on the front lock 10, and the rear lock panel 21 is fixedly connected to the threaded hole by screws. In another embodiment, the fixing part 11 is a sleeve on the front lock 10, which extends toward the rear lock panel 21, and the rear lock panel 21 is fixedly connected to the sleeve by screws. In this way, the screws on the rear lock panel 21 can be shorter, making installation easier.

[0050] If the door lock 100 is applied to a door lock 100 device with intelligent electronic components, the rear lock panel 21 is also provided with a motor rotation hole, and the lock body 30 is also provided with a lock cylinder rotation plate 33. It is understandable that the motor rotation hole is usually set on the rear lock panel 21. Although there is no structure that needs to extend out, the lock cylinder rotation plate 33 extends out in the lock body 30. Therefore, when installing the rear lock 20, it is still necessary to align it with the motor rotation hole before the rear lock 20 can be fixed.

[0051] Through the above technical solution, the user of the door lock 100 can first fix the front lock 10 and the lock body 30, and then fix the rear lock panel 21 and the front lock 10 through the fixing part 11. In the assembly process of the rear lock panel 21, since the rear lock panel 21 is provided with one or two clearance holes through the thickness direction, one clearance hole is set to the square shaft assembly hole 31 or the anti-lock plate assembly hole 32, or the two clearance holes are respectively set to the square shaft assembly hole 31 and the anti-lock plate assembly hole 32, the assembly process of the rear lock panel 21 does not require the square shaft 22, the anti-lock plate 23, and the motor rotation hole to be aligned with the square shaft assembly hole 31, the anti-lock plate assembly hole 32, and the lock cylinder rotation plate 33 on the lock body 30. The rear lock panel 21 can be fixed to the front lock 10, and then the square shaft 22 and / or the anti-lock plate 23 are assembled to the lock body 30. This reduces the assembly difficulty of the door lock 100 and greatly improves the assembly efficiency of the door lock 100.

[0052] In some examples, such as Figures 1 to 4 As shown, the rear lock panel 21 has a first clearance hole 24 through it along the thickness direction. The rear lock 20 also includes a handle 26. One end of the square shaft 22 passes through the first clearance hole 24 and is fitted into the square shaft mounting hole 31. The other end of the square shaft 22 is connected to the handle 26, and the handle 26 covers the first clearance hole 24.

[0053] In one embodiment, after the square shaft 22 is fitted into the square shaft mounting hole 31 on the lock body 30 via the first clearance hole 24 on the rear lock panel 21, the end of the square shaft 22 away from the lock body 30 is connected to the handle 26. The handle 26 can extend into the first clearance hole 24 to connect with the square shaft 22, or the square shaft 22 can extend out of the first clearance hole 24 through some structure to connect with the handle 26. This application does not impose specific limitations here.

[0054] In another embodiment, one end of the square shaft 22 can be first assembled onto the handle 26, and then the other end of the square shaft 22 can be assembled onto the lock body 30 through the first clearance hole 24.

[0055] With this configuration, the rotation of the handle 26 can drive the rotation of the square shaft 22, thereby controlling the opening or closing of the lock body 30, and further improving the assembly efficiency of the door lock 100.

[0056] In some examples, such as Figures 2 to 5As shown, the rear lock 20 also includes a bushing 27, which is rotatably mounted on the rear lock panel 21. The bushing 27 has a through groove 271 along its length, and the groove 271 is positioned opposite the first clearance hole 24. The handle 26 is fixedly connected to the end of the bushing 27 away from the lock body 30. The end of the square shaft 22 away from the lock body 30 is slidably mounted in the groove 271 to be connected to the handle 26 through the bushing 27. The square shaft 22 has a stop boss 221 in its circumference, which abuts against the side of the lock body 30 near the rear lock 20 to limit the length of the square shaft 22 entering the square shaft mounting hole 31.

[0057] There are several ways to rotatably mount the bushing 27 onto the rear lock panel 21. In one configuration, the rear lock panel 21 is provided with a mounting bracket, and the bushing 27 is rotatably connected to the mounting bracket, allowing the bushing 27 to rotate relative to the rear lock panel 21. In another configuration, a bearing is fitted around the periphery of the bushing 27, and the bushing 27 is rotatably mounted onto the rear lock panel 21 via the bearing.

[0058] It should be noted that when the groove 271 is set directly opposite the first clearance hole 24, the length direction of the bushing 27 coincides with the thickness direction of the rear lock panel 21, and the shape of the groove 271 is adapted to the square shaft 22 and the stop boss 221. The square shaft 22 can enter the groove 271 through the first clearance hole 24.

[0059] Specifically, in this embodiment, the square shaft 22 is in the shape of a quadrangular prism, the stop boss 221 is a protrusion arranged on the four edges, and the groove 271 is also adapted to fit, so that when the square shaft 22 is assembled, the square shaft 22 can slide along the groove 271.

[0060] With this configuration, during the assembly process of the square shaft 22, the square shaft 22 can enter the groove 271 through the first clearance hole 24. Then, the square shaft 22 can continue to slide forward along the groove 271 and slide to the lock body 30 to be assembled on the square shaft assembly hole 31. Due to the action of the stop boss 221, the square shaft 22 can only partially enter the square shaft assembly hole 31 and cannot fully enter. By controlling the length of the square shaft 22 entering the square shaft assembly hole 31, it can be ensured that the end of the square shaft 22 away from the lock body 30 is slidably installed in the slide groove 2921, thereby preventing the square shaft 22 from detaching from the bushing 27 or passing through the lock body 30. The handle 26 is fixedly connected to the end of the bushing 27 away from the lock body 30. After the square shaft 22 is assembled, the handle 26 can be rotated to drive the bushing 27 and the square shaft 22 to rotate together. In this way, the square shaft 22 can be used for door panels of different thicknesses.

[0061] In some examples, such as Figure 2 and Figure 3As shown, the rear lock 20 also includes a first elastic element 28, which is installed in the groove 271. One end of the first elastic element 28 elastically abuts against the square shaft 22, and the other end of the first elastic element 28 elastically abuts against the handle 26.

[0062] The first elastic element 28 can be a spring or an elastic body.

[0063] With this configuration, the stop boss 221 on the square shaft 22 can always abut against the lock body 30 through the elastic action of the first spring, preventing the square shaft 22 from retracting into the slide groove 2921 and disengaging from the lock body 30, which would cause the rear lock 20 to lose control of the lock body 30.

[0064] In some examples, such as Figures 3 to 5 As shown, the end of the bushing 27 away from the lock body 30 is provided with a limiting groove 272. The handle 26 includes a handle body 261 and a nut 263. The handle body 261 is provided with a mounting hole 2611. The circumference of the mounting hole 2611 is provided with a positioning protrusion 2612. A part of the bushing 27 extends into the handle body 261 through the mounting hole 2611, and the positioning protrusion 2612 cooperates with the limiting groove 272. The nut 263 is threaded to the outer circumference of the bushing 27.

[0065] The limiting groove 272 is cross-shaped, and the positioning protrusion 2612 is adapted to the limiting groove 272 as four protrusions. In other embodiments, the limiting groove 272 and the positioning protrusion 2612 may be arranged in other shapes. This application does not specifically limit the specific shape of the limiting groove 272 and the positioning protrusion 2612.

[0066] In some embodiments, the handle body 261 is further provided with a connecting cylinder communicating with the mounting hole 2611. The connecting cylinder extends toward the front lock 10 panel and extends into the first clearance hole 24 to be sleeved on the bushing 27.

[0067] The nut 263 also has a cross groove on the side opposite to the bushing 27 to facilitate tightening with a flathead or Phillips screwdriver.

[0068] This configuration allows the handle 26 to be fixed relative to the bushing 27 by tightening the nut 263, preventing the handle 26 from shaking. It also facilitates the installation of the square shaft 22 and the aforementioned first elastic element 28.

[0069] In summary, during the assembly of the handle 26, the handle body 261 can be first fitted onto the bushing 27, that is, part of the bushing 27 is first inserted into the handle body 261 through the mounting hole 2611. In this step, the positioning protrusion 2612 is simultaneously engaged with the limiting groove 272 to initially fix the relative position of the handle body 261 and the bushing 27. Then, the first elastic member 28 is assembled into the groove 271, so that one end of the first elastic member 28 abuts against the square shaft 22. Next, the nut 263 is threadedly connected to the outer circumference of the bushing 27, so that the nut 263 can elastically abut against the other end of the first elastic member 28 and fix the relative position of the handle body 261 and the bushing 27.

[0070] In some embodiments, the handle 26 further includes a handle cover 262 that covers the side of the handle body 261 having a nut 263 to cover the nut.

[0071] In some examples, such as Figure 1 , Figure 6 and Figure 7 As shown, the rear lock panel 21 has a second clearance hole 25 through it along the thickness direction. The rear lock 20 also includes a knob 29. One end of the anti-lock plate 23 passes through the second clearance hole 25 and is fitted into the anti-lock plate mounting hole 32. The other end of the anti-lock plate 23 is connected to the knob 29, and the knob 29 covers the second clearance hole 25.

[0072] In one embodiment, the deadbolt 23 is first installed on the knob 29, and then assembled into the deadbolt mounting hole 32 on the lock body 30 through the second clearance hole 25.

[0073] With this configuration, the locking plate 23 can be rotated by turning the knob 29, thereby controlling the closing or opening of the lock body 30, and further improving the assembly efficiency of the door lock 100.

[0074] In some examples, such as Figures 6 to 8 As shown, the anti-lock plate 23 has multiple adjustment holes 231 along its length. The knob 29 includes a rotating body 291 and a mounting rod 292 connected to each other. The rotating body 291 is rotatably mounted on the rear lock panel 21. The rotating body 291 also covers the second clearance hole 25. The mounting rod 292 extends into the second clearance hole 25. The mounting rod 292 has a sliding groove 2921 along its length. The end of the sliding groove 2921 near the lock body 30 is through-hole. A fixing pin 2922 is also provided in the sliding groove 2921. Part of the anti-lock plate 23 is installed in the sliding groove 2921, and the fixing pin 2922 can cooperate with any one of the adjustment holes 231.

[0075] In one embodiment, the retaining pin 2922 is detachably mounted in the slide groove 2921 through a hole in the mounting rod 292. In another embodiment, the retaining pin 2922 is a protrusion, and pressing the locking tab 23 allows the adjusting hole 231 to be press-fitted with the protrusion.

[0076] With this configuration, the appropriate adjustment hole 231 can be selected to cooperate with the fixing pin 2922 according to the thickness of the door panel, and then the deadbolt 23 can be assembled into the deadbolt mounting hole 32 of the lock body 30 through the second clearance hole 25, so that the door lock 100 can be used for door panels of different thicknesses.

[0077] In some examples, such as Figure 6 , Figure 7 and Figure 10 As shown, the mounting rod 292 has a receiving groove 2923 at one end near the rotating body 291. The knob 29 also includes a limiting block 293 and a second elastic member 294. The limiting block 293 is movably disposed in the receiving groove 2923, and the second elastic member 294 is elastically supported between the limiting block 293 and the bottom of the receiving groove 2923, so as to drive the limiting block 293 to always have the tendency to extend out of the receiving groove 2923. The second clearance hole 25 has an annular protrusion 213 that cooperates with the limiting block 293.

[0078] There are several ways in which the limiting block 293 can be movably disposed within the receiving groove 2923. In one configuration, the limiting block 293 has a horizontally penetrating movable hole that extends vertically. A movable pin is disposed within the receiving groove 2923 to engage with the movable hole, allowing the limiting block 293 to move vertically up and down. In another configuration, a guide rail is provided on the periphery of the limiting block 293, and a guide groove is provided on the side wall of the receiving groove to engage with the guide rail, allowing the limiting block 293 to move along the guide groove under the action of the guide rail.

[0079] With this configuration, when the rotating body 291 is rotated and installed on the rear lock panel 21, the limit block 293 can restrict the knob 29 from disengaging from the second clearance hole 25, so that the clearance hole can only rotate within the second clearance hole 25.

[0080] Considering that the deadbolt plate 23 and knob 29 are installed after the rear lock panel 21, they may need to be disassembled, replaced, or maintained. There are several ways to disassemble the deadbolt plate 23 and knob 29. In one configuration, the second clearance hole 25 has a larger opening on the side of the rear lock panel 21 away from the knob 29, allowing a tool to be inserted into the opening to press the limit block 293.

[0081] In another configuration, the rear lock panel 21 includes a bracket 211 and a housing 212. The housing 212 is detachably mounted on the bracket 211, with an annular protrusion 213 formed on the housing 212. Thus, the knob 29 and the deadbolt 23 can be removed at the same time by removing the housing 212. To further facilitate disassembly, the housing 212 is separated from the first clearance hole 24 to avoid interference from the handle 26.

[0082] In some examples, such as Figure 9 As shown, a guide ramp 251 is provided around the periphery of the second clearance hole 25. This arrangement provides guidance for the limiting block 293 to slide into the second clearance hole 25, thereby further improving assembly efficiency. Furthermore, a matching guide ramp can also be provided on the limiting block 293.

[0083] In some examples, such as Figure 9 and Figure 10 As shown, the rotating body 291 has a catch ball 295 on the side facing the rear lock panel 21, and the rear lock panel 21 has a locking hole 214 that cooperates with the catch ball 295.

[0084] There are several ways to install the catch ball 295. In one installation, the rotating body 291 has a blind hole recessed on the side facing the rear lock panel 21, and the catch ball 295 is embedded in the blind hole. In another installation, the catch ball 295 is installed on the side of the rotating body 291 facing the rear lock panel 21 by adhesive bonding.

[0085] With this configuration, rotating the knob 29 can drive the ball 295 to rotate. When the ball 295 enters and leaves the slot 214, it can generate feedback, providing tactile and informational feedback for the knob 29 to be rotated into place.

[0086] In this embodiment, the rotating body 291 is provided with two ball bearings 295, and the rear lock panel 21 is provided with four locking holes 214 at corresponding positions. This application does not specifically limit the number of ball bearings 295 and locking holes 214.

[0087] In summary, during the assembly process of the knob 29, the limiting block 293 can be movably set in the receiving groove 2923 first, and then the ball catch 295 can be assembled on the side of the rotating body 291 facing the rear lock panel 21. Next, the corresponding adjustment hole 231 is selected according to the thickness of the door panel, and the anti-lock plate 23 is assembled on the knob mounting rod 292. Specifically, the anti-lock plate 23 is partially fixed in the slide groove by the fixing pin 2921, and finally the anti-lock plate 23 is assembled into the anti-lock plate assembly hole 32 on the lock body 30 through the second clearance hole 25.

[0088] In one embodiment, the rear lock panel 21 has two clearance holes extending through its thickness direction. The first clearance hole 24 is directly opposite the square shaft mounting hole 31, and the second clearance hole 25 is directly opposite the anti-locking plate mounting hole 32. It is understood that the first mounting hole 24 and the second mounting hole 25 are independent of each other, allowing the square shaft 22 and the anti-locking plate 23 to be simultaneously mounted in the square shaft mounting hole 31 and the anti-locking plate mounting hole 32 by different workers. Alternatively, the square shaft 22 can be mounted in the square shaft mounting hole 31 via the first clearance hole 24, and then the anti-locking plate 23 can be mounted in the anti-locking plate mounting hole 31 via the second clearance hole 24. Or, the anti-locking plate 23 can be mounted in the anti-locking plate mounting hole 31 via the second clearance hole 24, and then the square shaft 22 can be mounted in the square shaft mounting hole 31 via the first clearance hole 24.

[0089] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A door lock, characterized in that, The door lock includes a front lock, a rear lock, and a lock body; wherein... The lock body is located between the front lock and the rear lock, and the lock body is provided with a square shaft mounting hole and a deadbolt mounting hole respectively. The front lock is provided with a fixing part, and the front lock is also linked with the lock body; The rear lock includes a rear lock panel, a square shaft, and a deadbolt. The rear lock panel is fixedly connected to the fixing part, and the rear lock panel is provided with one or two clearance holes through the thickness direction. When there is one clearance hole, the clearance hole is set directly opposite the square shaft mounting hole or the anti-lock plate mounting hole, so that after the rear lock panel is fixedly connected to the fixing part, the square shaft or the anti-lock plate can be assembled on the lock body through the clearance hole; When there are two clearance holes, the two clearance holes are respectively positioned opposite the square shaft mounting hole and the anti-lock plate mounting hole, so that after the rear lock panel is fixedly connected to the fixing part, the square shaft and the anti-lock plate can be assembled on the lock body through the corresponding clearance holes; The rear lock can be linked to the lock body via the square shaft and / or the anti-lock plate; The rear lock panel has a first clearance hole extending through it along the thickness direction. The rear lock also includes a handle. One end of the square shaft passes through the first clearance hole and is fitted into the square shaft mounting hole. The other end of the square shaft is connected to the handle. The rear lock also includes a bushing, which is rotatably mounted on the rear lock panel. The bushing has a through groove along its length, and the groove is positioned opposite the first clearance hole. The handle is fixedly connected to the end of the bushing that is away from the lock body. The end of the square shaft away from the lock body is slidably installed in the groove so as to be connected to the handle through the bushing; The square shaft is provided with a stop boss in the circumference. The stop boss abuts against the side of the lock body near the rear lock to limit the length of the square shaft entering the square shaft mounting hole.

2. The door lock as described in claim 1, characterized in that, The rear lock also includes a first elastic element, which is installed in the groove. One end of the first elastic element elastically abuts against the square shaft, and the other end of the first elastic element elastically abuts against the handle.

3. The door lock as described in claim 1, characterized in that, The bushing has a limiting groove at one end away from the lock body. The handle includes a handle body and a nut. The handle body has a mounting hole and a positioning protrusion on the periphery of the mounting hole. A portion of the bushing extends into the handle body through the mounting hole, and the positioning protrusion cooperates with the limiting groove. The nut is threaded to the outer periphery of the bushing.

4. The door lock as described in claim 1, characterized in that, The rear lock panel has a second clearance hole extending through it along the thickness direction. The rear lock also includes a knob. One end of the anti-lock plate passes through the second clearance hole and is fitted into the anti-lock plate mounting hole. The other end of the anti-lock plate is connected to the knob.

5. The door lock as described in claim 4, characterized in that, The anti-lock plate has multiple adjustment holes along its length. The knob includes a rotating body and a mounting rod connected to each other. The rotating body is rotatably mounted on the rear lock panel. The rotating body also covers the second clearance hole. The mounting rod extends into the second clearance hole, and the mounting rod is provided with a sliding groove along its length, with the sliding groove extending through one end near the lock body. The slide groove is also provided with a fixing pin, and part of the anti-locking plate is installed in the slide groove. The fixing pin can cooperate with any of the adjustment holes.

6. The door lock as described in claim 5, characterized in that, The mounting rod has a receiving groove at one end near the rotating body. The knob also includes a limiting block and a second elastic element. The limiting block is movably disposed in the receiving groove, and the second elastic element is elastically supported between the limiting block and the bottom of the receiving groove, so as to drive the limiting block to always have the tendency to extend out of the receiving groove. The second clearance hole has an annular protrusion that cooperates with the limiting block.

7. The door lock as described in claim 6, characterized in that, The periphery of the second clearance hole is provided with a guide ramp.

8. The door lock as described in claim 5, characterized in that, The rotating body has a catch ball on the side facing the rear lock panel, and the rear lock panel has a locking hole that engages with the catch ball.

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