An adjustable square rod and door lock

Abstract

This invention belongs to the field of lock technology, specifically disclosing an adjustable square rod and a door lock. The adjustable square rod includes a front rod, a rear rod, an adjusting rod, an elastic element, and a positioning element. The front rod has a through hole; the rear rod has a main body section and an insertion section, the insertion section extending along a front-back direction and extending into the through hole; the insertion section or the main body section has a sliding groove running front-back; the adjusting rod is slidably connected to the sliding groove, and the adjusting rod rotates coaxially with the rear rod; one end of the elastic element abuts against the front end of the adjusting rod, and the other end abuts against the insertion section; the positioning element is located on the outside of the front rod; the positioning element is used to position the door lock body, so that the front rod and the rear rod are positioned and connected to the door lock body, thus fixing the positions of the front rod and the rear rod. This allows the front handle and the adjustable square rod to connect, eliminating the need to position and install a spring at the front or rear handle, reducing installation steps, making door lock installation more convenient and faster, and improving installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of lock technology, and in particular to an adjustable square bar and door lock. Background Technology

[0002] Door locks typically have a front handle and a rear handle. When using an electronic lock body, the emergency lock cylinder is usually located on the front handle, allowing unlocking via the emergency lock cylinder and clutch mechanism. Because the emergency lock cylinder is on the front handle, the length of the adjustable square bar must be adapted to the distance between the front and rear handles. Therefore, adjustable square bars have appeared on the market to allow the lock to be installed on doors of various thicknesses. However, most adjustable square bars on the market have a relatively complex structure. The adjustment mechanism requires a spring to adjust the length of the square bar so that it can abut against the front and rear handles. This necessitates additional spring installation on either the front or rear handle to connect the square bar, requiring a high level of installation skill from the installer. During on-site installation, misalignment of the square bar or missing springs can easily occur, resulting in low installation efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable square rod and door lock to solve the technical problems of difficult door lock installation, complex installation steps, and low installation efficiency in the prior art.

[0004] To achieve the above objectives, a first aspect of the present invention provides an adjustable square rod for connecting a front handlebar and a rear handlebar, comprising:

[0005] A front rod for connecting to the front handle; the front rod has a through hole running forward and backward, and a first limiting step facing forward is provided in the through hole;

[0006] A rear rod for connecting to the rear handle; the rear rod has a main body section and an insertion section, the insertion section extending along a front-rear direction and extending into the through hole, and the outer side of the insertion section is provided with a second limiting step for cooperating with the first limiting step; the insertion section is rotatable relative to the front rod; the insertion section or the main body section is provided with a front-rear sliding groove;

[0007] An adjusting rod is slidably connected to the slide groove, and the adjusting rod rotates coaxially with the rear rod; the front end of the adjusting rod extends to the front side of the through hole;

[0008] An elastic element has one end abutting against the front end of the adjusting rod and the other end abutting against the insertion section; the elastic element is used to drive the adjusting rod to extend forward.

[0009] Preferably, the groove is disposed on the insertion section and is located within the through hole.

[0010] Preferably, the insertion section is provided with a limiting groove running along the front-back direction in the length direction, the limiting groove is connected to the sliding groove, and the adjusting rod is provided with a first limiting member for inserting into the limiting groove.

[0011] Preferably, the adjusting rod is provided with a first mounting hole for installing the first limiting member.

[0012] Preferably, there are two limiting grooves, and the two limiting grooves are respectively disposed on both sides of the slide groove.

[0013] Preferably, the front end of the adjusting rod is provided with an abutment portion, and the rear side of the abutment portion abuts against the elastic element.

[0014] Preferably, the front side of the front end of the adjusting rod is provided with a transmission part for engaging with the front handle for transmission.

[0015] Preferably, it further includes: a positioning element; the positioning element is disposed on the outer side of the front rod; the outer side of the front rod is provided with a mounting groove, and the positioning element is disposed in the mounting groove.

[0016] Preferably, the positioning element is a snap ring.

[0017] Preferably, the rear end of the insertion segment is a connecting end, and the connecting end is detachably connected to the main body segment.

[0018] Preferably, it further includes a second limiting member; the main body segment is provided with a connecting hole, the connecting end is inserted into the connecting hole, the main body segment is provided with a positioning hole connected to the connecting hole, and the connecting end is provided with a second mounting hole; the second limiting member is inserted into the second mounting hole and the positioning hole so that the connecting end is positioned and connected to the main body segment.

[0019] Preferably, the elastic element is a compression spring, which is sleeved on the outside of the adjusting rod.

[0020] A second aspect of the present invention provides a door lock comprising: a front handle, a rear handle, a lock body, a lock cylinder, and an adjustable square rod as described above. The front handle is connected to the front rod, the rear handle is connected to the main body section, the lock cylinder is disposed on the front handle, and the lock cylinder has a telescopic block located in front of the adjusting rod and abutting against the adjusting rod. The lock body has a clutch fork and a square rod hole disposed on the clutch fork. A positioning member abuts against the front side of the lock body, and the main body section is located in the square rod hole and is throttle-connected to the clutch fork. When the lock cylinder drives the telescopic block to extend or retract, the adjusting rod is throttle-connected to the front handle.

[0021] Preferably, after the lock head drives the telescopic block to retract, the adjusting rod is connected to the front handle in a transmission manner.

[0022] Preferably, the front side of the front end of the adjusting rod is provided with a transmission part for abutting against the telescopic block, and the front handle is provided with a transmission groove for transmission connection with the transmission part; the retraction of the telescopic block can allow the transmission part to extend into the transmission groove, so that the front handle is transmissionally connected to the adjusting rod.

[0023] Preferably, the transmission part is in the shape of an "I" and the transmission groove is in the shape of a cross.

[0024] Preferably, the clutch fork includes a rotating block, a clutch, and a clutch rotor; the clutch is used to engage the rotating block and the clutch rotor or to disengage the rotating block and the clutch rotor; the square rod hole is provided on the rotating block, and the clutch rotor is drivenly connected to the front rod.

[0025] The adjustable square rod and door lock provided by this invention have the following advantages: During door lock installation, the positioning component of the adjustable square rod is used to position it with the lock body, so that the front rod and the rear rod are positioned and connected with the lock body, thus fixing the position of the front rod and the rear rod. This ensures that the front handle and the adjustable square rod are connected, guaranteeing accurate installation of the front handle and the square rod. Moreover, there is no need to position and install springs at the front or rear handle, reducing installation steps and significantly lowering the installation difficulty, making door lock installation more convenient and quick. Installers will not make installation errors or miss springs during on-site installation, thus improving installation efficiency.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the adjustable square rod according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional structural diagram of the adjustable square rod according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the disassembled structure of the adjustable square rod according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure after the rear rod and the adjusting rod are assembled according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic cross-sectional view of the rear rod and adjusting rod after assembly according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the state structure of the door lock cylinder telescopic block when it is retracted according to an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the door lock in the locked state according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the door lock in the present invention when the clutch is engaged.

[0035] In the diagram, 100 is the front rod; 110 is the through hole; 111 is the first limiting step; 120 is the mounting groove; 200 is the rear rod; 210 is the main body section; 211 is the connecting hole; 212 is the positioning hole; 220 is the insertion section; 221 is the second limiting step; 222 is the limiting groove; 223 is the connecting end; 224 is the second mounting hole; 230 is the sliding groove; 300 is the adjusting rod; 310 is the first limiting component; 320 is the first mounting hole; 330 is the abutment part; 340 is the transmission part; 400 is the elastic component; 500 is the positioning component; and 600 is the second limiting component.

[0036] 10. Front handle; 11. Transmission groove; 20. Rear handle; 30. Lock body; 31. Clutch fork; 32. Square rod hole; 33. Rotating block; 34. Clutch pin; 35. Clutch rotor; 40. Lock head; 41. Telescopic block. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0039] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0041] Please refer to the following: Figures 1 to 8 The adjustable square rod provided in the embodiments of the present invention will now be described. The adjustable square rod is applied to door locks, and can be applied to mechanical door locks or electronic door locks.

[0042] like Figures 1 to 5 As shown, the adjustable square rod of this embodiment of the invention is used to connect the front handle 10 and the rear handle 20, and includes: a front rod 100, a rear square rod 200, an adjusting rod 300, an elastic element 400, and a positioning element 500.

[0043] Reference Figure 2 and Figure 3 The front rod 100 is used to connect with the front handle 10; the front rod 100 and the front handle 10 rotate coaxially, so that the front handle 10 can drive the front rod 100 to rotate when it rotates; the front rod 100 is provided with a through hole 110 running in a front-back direction;

[0044] Reference Figure 2 and Figure 3 The rear rod 200 is used to connect with the rear handle 20; the rear rod 200 and the rear handle 20 rotate coaxially, and the rear rod 200 can be driven to rotate when the rear handle 20 rotates; the rear rod 200 has a main body section 210 and an insertion section 220, the main body section 210 and the insertion section 220 rotate coaxially, the insertion section 220 extends along the front-back direction and extends into the through hole 110; the insertion section 220 can rotate relative to the front rod 100; that is, the insertion section 220 can rotate relative to the front rod 100, or it can rotate coaxially with the front rod 100 when the lock head 40 of the front handle 10 is unlocked; in this embodiment, the main body section 210 is connected to the rear handle 20. In other embodiments, the insertion section 220 can be used to connect to the rear handle 20, such as the rear end of the insertion section 220 being connected to the rear handle 20 with a screw, or the main body section 210 and the insertion section 220 can be used to connect to the rear handle 20.

[0045] Reference Figure 2 and Figure 3The insertion section 220 is provided with a sliding groove 230 running back and forth; the adjusting rod 300 is slidably connected to the sliding groove 230, and the adjusting rod 300 rotates coaxially with the rear rod 200; the front end of the adjusting rod 300 extends to the front side of the through hole 110; thus, the adjusting rod 300 can slide back and forth along the sliding groove 230, and the front end of the adjusting rod 300 can move back and forth to cooperate with the lock head 40 of the front handle 10 to perform the unlocking action. In addition, the main body section 210 can also be provided with a sliding groove, and the corresponding insertion section is provided with a through groove communicating with the sliding groove. One end of the adjusting rod is slidably connected to the sliding groove, and the adjusting rod extends from the through groove to the front side of the through hole 110, so that the adjusting rod can extend and retract back and forth in the back and forth direction.

[0046] Reference Figure 2 and Figure 3 One end of the elastic element 400 abuts against the front end of the adjusting rod 300, and the other end abuts against the insertion section 220. The elastic element 400 is used to drive the adjusting rod 300 to extend forward. The elastic element 400 provides an outward expanding force, so that the front end of the adjusting rod 300 has a tendency to move forward, ensuring that the front end of the adjusting rod 300 can move forward so that the front end of the adjusting rod 300 abuts against the lock head 40 of the front handle 10 for unlocking. The adjusting rod 300 can move back and forth along the slide groove 230, so that the length of the entire adjustable square rod in the front and back direction can be adjusted to adapt to door bodies of different thicknesses.

[0047] Reference Figure 2 and Figure 3 The positioning member 500 is disposed on the outside of the front rod 100; wherein the through hole 110 is provided with a first limiting step 111 facing the front side, and the outside of the insertion section 220 is provided with a second limiting step 221 for cooperating with the first limiting step 111. When the insertion section 220 moves backward, it can drive the front rod 100 to move backward together, so that the relative position between the front rod 100 and the rear rod 200 will not change.

[0048] Reference Figures 6 to 8The specific door lock installation process is as follows: First, install the lock body 30 of the door lock on the door. Then, extend the adjustable square rod from front to back into the square rod hole 32 of the lock body 30 of the door lock until the positioning part 500 abuts against the door lock, thus completing the initial positioning of the adjustable square rod. Next, align the square hole of the front handle 10 with the front rod 100 and the adjusting rod 300, and install the front handle 10 on the door, thus completing the positioning and installation of the front handle 10. Since the lock head 40 of the front handle 10 abuts against the front end of the adjusting rod 300, the front handle 10 can push the front rod 100 towards the door lock through the adjusting rod 300, the elastic part 400, and the insertion section 220, thereby fixing the positions of the front rod 100 and the rear square rod 200. This ensures that the adjustable square rod is positioned and installed between the lock body 30 and the front handle 10, and the front handle 10 is connected to the front rod 100, ensuring correct installation. Finally, align the square hole of the rear handle 20 with the rear rod 200, and then install the rear handle 20 on the door to complete the entire door lock installation.

[0049] In existing technologies, a spring needs to be installed on the rear handle during door lock installation so that the rear rod can be pushed forward to connect the front rod with the front handle, allowing the front handle to drive the lock body to open the door. However, in this embodiment, the adjustable rod does not require additional spring installation during the entire door lock installation process, nor does it require positioning and installing springs at the front handle 10 and rear handle 20. The adjustable rod only needs to be aligned with the square rod hole 32 of the lock body 30 for easy installation, greatly reducing the installation difficulty and making door lock installation more convenient and faster. Installers will not make installation errors or miss springs during on-site installation, thus improving installation efficiency.

[0050] In this embodiment, during door lock installation, the adjustable square bar is positioned by the positioning component 500 with the lock body 30, allowing the front bar 100 and rear bar 200 to be positioned and connected to the lock body 30. This fixes the positions of the front bar 100 and rear bar 200, ensuring the connection between the front handle 10 and the adjustable square bar. This guarantees accurate installation of the front handle 10 and the square bar, and eliminates the need to position and install springs at the front handle 10 or rear handle 20, reducing installation steps and significantly lowering installation difficulty. This makes door lock installation more convenient and faster, preventing misalignment or missing springs during on-site installation and improving installation efficiency.

[0051] Reference Figures 3 to 5 In some embodiments of the present invention, the slide groove 230 is disposed on the insertion section 220, and the slide groove 230 is located within the through hole 110. That is, the front rod 100 can cover the slide groove 230 to prevent the slide groove 230 from being exposed, which can prevent dust or foreign objects from falling into the slide groove 230 and avoid the situation where dust or foreign objects falling into the slide groove 230 affect the extension and retraction of the adjusting rod 300, thus ensuring that the adjustable square rod can be used normally and ensuring the normal use of the door lock.

[0052] Reference Figures 3 to 5 In some embodiments of the present invention, the insertion segment 220 is provided with a limiting groove 222 extending along the longitudinal direction. The limiting groove 222 communicates with the sliding groove 230. The adjusting rod 300 is provided with a first limiting member 310 for insertion into the limiting groove 222. The adjusting rod 300 is inserted into the limiting groove 222 through the first limiting member 310, which allows the limiting groove 222 to restrict the moving length of the adjusting rod 300. That is, the length of the limiting groove 222 is the movable length of the adjusting rod 300 in the longitudinal direction, so as to ensure that the adjusting rod 300 will not be dislodged from the sliding groove 230 and to ensure that the adjusting rod 300 is connected to the insertion segment 220.

[0053] Reference Figures 3 to 5 In some embodiments of the present invention, the adjusting rod 300 is provided with a first mounting hole 320 for mounting the first limiting member 310. The first limiting member 310 can be directly inserted into the first mounting hole 320 so that the first limiting member 310 is fixedly connected to the adjusting rod 300, ensuring that the adjusting rod 300 will not come out of the slide groove 230.

[0054] Reference Figures 3 to 5 In this embodiment, the slide groove 230 is a circular slot, and the corresponding adjusting rod 300 is a circular rod. The adjusting rod 300 transmits rotational torque to the insertion section 220 through the first limiting member 310 and the limiting groove 222, so that the adjusting rod 300 can rotate coaxially with the insertion section 220. Based on the above, there are two limiting grooves 222, and the two limiting grooves 222 are respectively arranged on both sides of the slide groove 230. The first limiting member 310 is inserted into the two limiting grooves 222, so that the adjusting rod 300 can transmit torque to the insertion section 220 through two fulcrums, which facilitates better force transmission to the insertion section 220 and the main body section 210. It should be noted that after the lock cylinder 40 of the front handle 10 is unlocked, the lock cylinder 40 pushes the adjusting rod 300 to extend or retract, so that the front handle 10 and the adjusting rod 300 are connected in transmission. At this time, rotating the front handle 10 can transmit the rotational torque to the insertion section 220, which in turn transmits it to the rear rod 200 and the rear handle 20. Therefore, the user can rotate the front handle 10 to drive the rear handle 20 to rotate. The rotation of the rear handle 20 can unlock the lock body 30 of the door lock, thus achieving the purpose of opening the door.

[0055] In addition, in some other embodiments, the slide 230 can also be a square groove, and the corresponding adjusting rod 300 can be a square rod, so that the adjusting rod 300 can transmit torque to the insertion section 220, ensuring that the torque of the front handle 10 can be transmitted to the rear square rod 200 and the rear handle 20.

[0056] Reference Figures 3 to 5In some embodiments of the present invention, the front end of the adjusting rod 300 is provided with an abutment portion 330, the rear side of which abuts against the elastic member 400. The abutment portion 330 is used to abut against the elastic member 400 to ensure that the elastic member 400 can provide a forward elastic force to the adjusting rod 300, so that the front end of the adjusting rod 300 can abut against the locking head 40 of the front handle 10, making it convenient for the user to rotate the locking head 40 to rotatably connect the front handle 10 and the adjusting rod 300.

[0057] Reference Figures 3 to 5 In some embodiments of the present invention, the front side of the front end of the adjusting rod 300 is provided with a transmission part 340 for cooperating with the front handle 10 for transmission. The transmission part 340 abuts against the lock head 40. When the lock head 40 drives the adjusting rod 300 to extend or retract, the transmission part 340 on the adjusting rod 300 will cooperate with the transmission structure inside the front handle 10, so that the front handle 10 can drive the adjusting rod 300, the rear rod 200 and the rear handle 20 to rotate together through the transmission structure, so as to achieve the purpose of rotating the front handle 10 to unlock.

[0058] Reference Figure 2 and Figure 3 In some embodiments of the present invention, a mounting groove 120 is provided on the outer side of the front rod 100, and the positioning member 500 is disposed in the mounting groove 120. Thus, the mounting groove 120 is provided on the outer periphery of the front rod 100, and the positioning member 500 is installed using the mounting groove 120 to position the positioning member 500 on the front rod 100. This facilitates the initial positioning of the adjustable square rod with the lock body 30 via the positioning member 500, and facilitates the subsequent installation of the front handle 10. Specifically, the mounting groove 120 is an annular groove, and the corresponding positioning member 500 is a retaining spring, which can be directly snapped onto the mounting groove 120. After being snapped into the mounting groove 120, the outer radius of the front rod 100 can be increased to abut against the lock body 30, achieving the purpose of positioning and installation. Furthermore, the positioning component 500, in conjunction with the elastic component 400, allows the front handle 10 to press the front rod 100 against the lock body 30 via the adjusting rod 300, the elastic component 400, and the insertion section 220. This ensures the positioning and installation of the adjustable square rod and the front handle 10, guarantees installation accuracy, prevents misalignment, and improves the efficiency of door lock installation.

[0059] Reference Figures 3 to 5 In some embodiments of the present invention, for ease of installation, the rear end of the insertion segment 220 is a connecting end 223, which is detachably connected to the main body segment 210. That is, the insertion segment 220 and the main body segment 210 are separately configured. During installation, the insertion segment 220 can be inserted from front to back into the through hole 110, and then the connecting end 223 can be used to connect it to the main body segment 210 to achieve the purpose of mating installation.

[0060] Reference Figures 3 to 5In some embodiments of the present invention, a second limiting member 600 is further included; the main body segment 210 is provided with a connecting hole 211, the connecting end 223 is inserted into the connecting hole 211, the main body segment 210 is provided with a positioning hole 212 connected to the connecting hole 211, and the connecting end 223 is provided with a second mounting hole 224; when the second mounting hole 224 is aligned with the positioning hole 212, the second limiting member 600 is inserted into the second mounting hole 224 and the positioning hole 212, so that the connecting end 223 is positioned and connected to the main body segment 210. The shapes of the second mounting hole 224 and the positioning hole 212 are adapted to the shape of the second limiting member 600. The second limiting member 600 is a locking pin, which is used to connect and fix the insertion section 220 to the main body section 210, ensuring that the insertion section 220 and the main body section 210 can rotate simultaneously and coaxially, ensuring the transmission of rotational torque, so that the front handle 10 can drive the rear handle 20 to rotate through the adjusting rod 300 to achieve the purpose of opening the door. In addition, the connecting end 223 can also be connected to the main body section 210 by means of threaded connection or other fastening methods, which can be set according to specific conditions.

[0061] Reference Figures 3 to 5 In some embodiments of the present invention, the elastic element 400 is a compression spring, which is sleeved on the outside of the adjusting rod 300. The compression spring sleeved on the outside of the adjusting rod 300 ensures that the spring force is directed in the front-to-back direction, preventing misalignment of the elastic element 400 and ensuring that the adjustable rod can extend and retract normally.

[0062] Reference Figures 6 to 8 This embodiment also provides a door lock, which includes: a front handle 10, a rear handle 20, a lock body 30, a lock cylinder 40, and the aforementioned adjustable square rod. The front handle 10 is connected to the front rod 100, and the rear handle 20 is connected to the rear rod 200. That is, the front handle 10 is connected to the front rod 100 through a square hole, and the rear handle 20 is connected to the rear rod 200 through a square hole, so that the front handle 10 can drive the front rod 100 to rotate, and the rear handle 20 can drive the rear rod 200 to rotate. The lock cylinder 40 is disposed on the front handle 10, and the lock cylinder 40 has a telescopic block. The telescopic block is located on the front side of the adjusting rod 300 and abuts against the adjusting rod 300, so that the lock cylinder 40 can drive the telescopic block to extend or retract when unlocking, so as to drive the adjusting rod 300 to extend or retract in the front-back direction, so that the adjusting rod 300 is connected to the front handle 10 in a transmission connection, allowing the front handle 10 to drive the rear handle 20 to rotate.

[0063] The lock body 30 has a clutch fork 31 and a square rod hole 32 disposed on the clutch fork 31; the positioning member 500 abuts against the front side of the lock body 30, and the rear square rod 200 is located in the square rod hole 32 and is throttle-connected to the clutch fork 31; since the rear rod 200 is connected to the square rod hole 32, when the rear handle 20 is rotated, it can drive the clutch fork 31 to rotate, thereby driving the bolt of the lock body 30 to extend or retract. Therefore, when unlocking, rotating the rear handle 20 can retract the bolt of the lock body 30, achieving the purpose of unlocking and opening the door. When the lock head 40 drives the telescopic block to extend or retract, the adjusting rod 300 is throttle-connected to the front handle 10. (Refer to...) Figure 6 Since the adjusting rod 300 and the rear rod 200 rotate coaxially, the front handle 10 can transmit torque to the rear rod 200 and the rear handle 20 through the adjusting rod 300. At this time, rotating the front handle 10 can rotate the rear handle 20, so that the rear handle 20 drives the clutch fork 31 to rotate, causing the lock tongue of the lock body 30 to retract, thereby achieving the purpose of unlocking and opening the door.

[0064] The specific door lock installation process is as follows: First, install the lock body 30 of the door lock on the door. Then, extend the adjustable square rod from front to back into the square rod hole 32 of the lock body 30 of the door lock until the positioning part 500 abuts against the door lock, thus completing the initial positioning of the adjustable square rod. Next, align the square hole of the front handle 10 with the front rod 100 and the adjusting rod 300, and install the front handle 10 on the door, thus completing the positioning and installation of the front handle 10. Since the lock head 40 of the front handle 10 abuts against the front end of the adjusting rod 300, the front handle 10 can push the front rod 100 towards the door lock through the adjusting rod 300, the elastic part 400, and the insertion section 220, thereby fixing the positions of the front rod 100 and the rear square rod 200. This ensures that the adjustable square rod is positioned and installed between the lock body 30 and the front handle 10, and the front handle 10 is connected to the square rod, ensuring correct installation. Finally, align the square hole of the rear handle 20 with the rear bar 200, and then install the rear handle 20 on the door to complete the entire door lock installation. Therefore, no additional springs are needed during the entire door lock installation process, nor is it necessary to position and install springs at the front handle 10 and rear handle 20. Only the adjustable bar needs to be aligned with the square bar hole 32 of the lock body 30 for smooth installation, significantly reducing the installation difficulty and making door lock installation more convenient and faster. Installers will not make installation errors or miss springs during on-site installation, thus improving installation efficiency.

[0065] In this embodiment, during installation, the positioning component 500 of the adjustable square rod is used to position the lock body 30 of the door lock, so that the front rod 100 and the rear rod 200 are positioned and connected to the lock body 30 of the door lock. This fixes the positions of the front rod 100 and the rear rod 200, so that the front handle 10 and the adjustable square rod are connected, ensuring that the front handle 10 and the square rod are installed accurately. Moreover, there is no need to position and install springs at the front handle 10 or the rear handle 20, reducing installation steps, significantly reducing installation difficulty, and making door lock installation more convenient and quick. Installers will not make installation mistakes or miss springs during on-site installation, thus improving installation efficiency.

[0066] In some embodiments of the present invention, reference is made to... Figure 6 When the lock cylinder 40 drives the telescopic block to retract, the adjusting rod 300 is connected to the front handle 10. Since the elastic element 400 provides a forward elastic force to the adjusting rod 300, the adjusting rod 300 can exert forward pressure on the telescopic block. When the telescopic block of the lock cylinder 40 retracts, the adjusting rod 300 can move forward under the force of the elastic element 400, so that the adjusting rod 300 is connected to the front handle 10. At this time, the front handle 10 can be rotated to drive the rear handle 20 to rotate, achieving the purpose of unlocking and opening the door. It should be noted that when the telescopic block of the lock cylinder 40 is extended, the telescopic block pushes the adjusting rod 300 away from the transmission structure of the front handle 10, and the adjusting rod 300 cannot transmit torque to the front rod 100, ensuring the safe use of the door lock. It can be mentioned that in this embodiment, when the lock cylinder 40 is not inserted for unlocking, the lock cylinder 40 is in the extended state, referring to... Figure 7 and Figure 8 When the key is inserted and the lock cylinder 40 is turned to the unlock position, the telescopic block of the lock cylinder 40 is in the retracted state, as shown in the reference. Figure 6 .

[0067] Reference Figures 5 to 7 In some embodiments of the present invention, the front side of the front end of the adjusting rod 300 is provided with a transmission part 340 for abutting against the telescopic block, and the front handle 10 is provided with a transmission groove 11 for transmission connection with the transmission part 340; when the telescopic block retracts, the transmission part 340 extends into the transmission groove 11, so that the front handle 10 is transmissionally connected to the adjusting rod 300. That is, the transmission structure on the front handle 10 is the transmission groove 11, and the shape of the transmission groove 11 is adapted to the shape of the transmission part 340, so that the front handle 10 can transmit torque to the adjusting rod 300, so that the front handle 10 can drive the rear handle 20 to rotate, ensuring normal unlocking and unlocking of the door lock.

[0068] Reference Figures 5 to 7Based on the above, the transmission part 340 is in the shape of an "I" and the transmission groove 11 is in the shape of a cross. That is, the "I"-shaped transmission part 340 can be inserted into the cross-shaped transmission groove 11 so that the transmission part 340 and the transmission groove 11 cooperate to transmit torque, allowing the front handle 10 to transmit torque to the adjusting rod 300, so that the front handle 10 can drive the rear handle 20 to rotate, ensuring the normal unlocking and unlocking of the door lock. In addition, the transmission part 340 can also be square, triangular, pentagonal, hexagonal, etc., and the transmission groove 11 can be a square groove, triangular groove, pentagonal groove, hexagonal groove, etc., that cooperates with the transmission part 340 to transmit torque.

[0069] In some embodiments of the present invention, the clutch fork 31 includes a rotating block 33, a clutch, and a clutch rotor 35; the clutch is used to engage the rotating block 33 and the clutch rotor 35 or to disengage the rotating block 33 and the clutch rotor 35; the square rod hole 32 is disposed on the rotating block 33, and the clutch rotor 35 is drively connected to the front rod 100. That is, the rear rod 200 can drive the rotating block 33 to rotate through the square rod hole 32, so as to drive the lock tongue of the lock body 30 to extend and retract. The clutch can be a motor-controlled clutch, and when the door lock is in the locked state, such as Figure 7 As shown, the clutch pin 34 is not inserted into the clutch rotor 35, causing the clutch rotor 35 to disengage from the rotating paddle 33. Therefore, even if the front handle 10 is turned, the rotating paddle 33 cannot be rotated. Figure 8 As shown, when unlocking is required, the motor drives the clutch pin 34 to insert into the clutch rotor 35 so that the clutch rotor 35 engages with the rotating paddle 33 and can transmit torque. At this time, the front handle 10 can be rotated to drive the rotating paddle 33 to rotate, thereby achieving the purpose of unlocking.

[0070] like Figure 6 As shown, when the lock cylinder 40 needs to be unlocked, the key is inserted into the lock cylinder 40 and turned to the unlocked state. The telescopic block of the lock cylinder 40 retracts, and the transmission part 340 of the adjusting rod 300 is inserted into the transmission groove 11 of the front rod 100. At this time, the front handle 10 is connected to the rear rod 200 and the rear handle 20 through the adjusting rod 300. Turning the front handle 10 will drive the rear handle 20 to rotate, thereby driving the rotating lever 33 to rotate, achieving the purpose of unlocking and opening the door. Conversely, when the key is turned to the locked state, the telescopic block of the lock cylinder 40 extends, pushing the transmission part 340 to the outside of the transmission groove 11, causing the transmission part 340 to disconnect from the transmission groove 11 and unable to transmit torque, thus achieving the purpose of locking.

[0071] The door lock installation process in this embodiment is as follows: First, install the lock body 30 of the door lock on the door. Then, extend the adjustable square rod from front to back into the square rod hole 32 of the lock body 30 of the door lock until the positioning member 500 abuts against the door lock, thus completing the initial positioning of the adjustable square rod. Next, align the square hole of the front handle 10 with the front rod 100 and the adjusting rod 300, and install the front handle 10 on the door, thus completing the positioning and installation of the front handle 10. Since the lock head 40 of the front handle 10 abuts against the front end of the adjusting rod 300, the front handle 10 can push the front rod 100 towards the door lock through the adjusting rod 300, the elastic member 400, and the insertion section 220, thereby fixing the positions of the front rod 100 and the rear square rod 200. This ensures that the adjustable square rod is positioned and installed between the lock body 30 and the front handle 10, and the front handle 10 is connected to the square rod, ensuring correct installation. Finally, align the square hole of the rear handle 20 with the rear bar 200, and then install the rear handle 20 on the door to complete the entire door lock installation. Therefore, no additional springs are needed during the entire door lock installation process, nor is it necessary to position and install springs at the front handle 10 and rear handle 20. Only the adjustable bar needs to be aligned with the square bar hole 32 of the lock body 30 for smooth installation, significantly reducing the installation difficulty and making door lock installation more convenient and faster. Installers will not make installation errors or miss springs during on-site installation, thus improving installation efficiency.

[0072] In summary, during door lock installation, the positioning component 500 of the adjustable square rod in this embodiment positions the front rod 100 and the rear rod 200 to the lock body 30, thus fixing their positions. This ensures accurate installation of the front handle 10 and the adjustable square rod, eliminating the need for springs at the front handle 10 or rear handle 20, reducing installation steps and significantly lowering installation difficulty. This makes door lock installation more convenient and faster, preventing misalignment or missing springs during on-site installation and improving efficiency. Furthermore, the front rod 100 covers the slide groove 230, preventing it from being exposed and preventing dust or foreign objects from falling into it. This avoids malfunctions caused by dust or foreign objects affecting the extension and retraction of the adjustable rod 300, ensuring the adjustable square rod functions properly and guaranteeing the normal operation of the door lock.

[0073] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An adjustable square rod for connecting a front handlebar and a rear handlebar, characterized in that, include: A front rod for connecting to the front handle; the front rod has a through hole running forward and backward, and a first limiting step facing forward is provided in the through hole; A rear rod for connecting to the rear handle; the rear rod has a main body section and an insertion section, the insertion section extending along a front-rear direction and extending into the through hole, and the outer side of the insertion section is provided with a second limiting step for cooperating with the first limiting step; the insertion section is rotatable relative to the front rod; the insertion section or the main body section is provided with a front-rear sliding groove; An adjusting rod is slidably connected to the slide groove, and the adjusting rod rotates coaxially with the rear rod; the front end of the adjusting rod extends to the front side of the through hole; An elastic element has one end abutting against the front end of the adjusting rod and the other end abutting against the insertion section; the elastic element is used to drive the adjusting rod to extend forward.

2. The adjustable square rod according to claim 1, characterized in that, The groove is disposed on the insertion section and is located within the through hole.

3. The adjustable square rod according to claim 2, characterized in that, The insertion section is provided with a limiting groove along the front-to-back direction in the length direction. The limiting groove is connected to the sliding groove. The adjusting rod is provided with a first limiting member for inserting into the limiting groove.

4. The adjustable square rod according to claim 3, characterized in that, The adjusting rod is provided with a first mounting hole for installing the first limiting member.

5. The adjustable square rod according to claim 3, characterized in that, There are two limiting grooves, and the two limiting grooves are respectively arranged on both sides of the slide groove.

6. The adjustable square rod according to claim 1, characterized in that, The front end of the adjusting rod is provided with an abutment part, and the rear side of the abutment part abuts against the elastic element.

7. The adjustable square rod according to claim 1, characterized in that, The front side of the front end of the adjusting rod is provided with a transmission part for cooperating with the front handle for transmission.

8. The adjustable square rod according to claim 1, characterized in that, Also includes: A positioning element; the positioning element is disposed on the outside of the front rod; the outside of the front rod is provided with a mounting groove, and the positioning element is disposed in the mounting groove.

9. The adjustable square rod according to claim 8, characterized in that, The positioning element is a snap ring.

10. The adjustable square rod according to claim 1, characterized in that, The rear end of the insertion segment is a connecting end, which is detachably connected to the main body segment.

11. The adjustable square rod according to claim 10, characterized in that, It also includes a second limiting member; the main body segment is provided with a connecting hole, the connecting end is inserted into the connecting hole, the main body segment is provided with a positioning hole connected to the connecting hole, and the connecting end is provided with a second mounting hole; the second limiting member is inserted into the second mounting hole and the positioning hole so that the connecting end is positioned and connected to the main body segment.

12. The adjustable square rod according to claim 1, characterized in that, The elastic element is a compression spring, which is sleeved on the outside of the adjusting rod.

13. A door lock, characterized in that, include: Front handle, rear handle, lock body, lock cylinder, positioning components; And an adjustable square rod as claimed in any one of claims 1 to 7, 10, 11, and 12, wherein the positioning member is disposed on the outer side of the front rod; a mounting groove is provided on the outer side of the front rod, the positioning member is disposed in the mounting groove, the front handle is connected to the front rod, the rear handle is connected to the main body section, the lock head is disposed on the front handle, and the lock head has a telescopic block, the telescopic block is located on the front side of the adjusting rod and abuts against the adjusting rod, the lock body has a clutch fork and a square rod hole disposed on the clutch fork; the positioning member abuts against the front side of the lock body, the main body section is located in the square rod hole and is throttle-connected to the clutch fork; when the lock head drives the telescopic block to extend or retract, the adjusting rod is throttle-connected to the front handle.

14. The door lock according to claim 13, characterized in that, After the lock head drives the telescopic block to retract, it causes the adjusting rod to be connected to the front handle in a transmission manner.

15. The door lock according to claim 14, characterized in that, The front side of the front end of the adjusting rod is provided with a transmission part for abutting against the telescopic block, and the front handle is provided with a transmission groove for transmission connection with the transmission part; the retraction of the telescopic block can allow the transmission part to extend into the transmission groove, so that the front handle is transmissionally connected to the adjusting rod.

16. The door lock according to claim 15, characterized in that, The transmission part is in the shape of an "I" and the transmission groove is in the shape of a "+".

17. The door lock according to claim 13, characterized in that, The clutch fork includes a rotating block, a clutch, and a clutch rotor; the clutch is used to engage the rotating block and the clutch rotor or to disengage the rotating block and the clutch rotor; the square rod hole is provided on the rotating block, and the clutch rotor is drivenly connected to the front rod.

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