Improved lock with anti-locking structure

Abstract

The utility model discloses an improved lock with reverse locking structure, which comprises a first handle assembly, a second handle assembly, a first panel assembly, a second panel assembly, a lock bolt assembly and a lock bar. The first handle assembly and the second handle assembly are connected by the lock bar. The lock bar is provided with a through hole along the axial direction. A push rod is arranged in the through hole. The outer end of the push rod extends into the unlocking hole of the second handle assembly. The inner end of the push rod extends into the first handle assembly and is linked with the reverse locking assembly arranged in the first handle assembly. The reverse locking assembly has an unlocking state and a reverse locking state. The reverse locking column of the reverse locking assembly is inserted into the positioning hole of the first panel assembly. The first handle assembly and the first panel assembly are fixed in position. External force pushes the push rod to move towards the first handle assembly. The push rod makes the reverse locking column disengage from the positioning hole. The first handle assembly can rotate relative to the first panel assembly. The lock does not need a key. The reverse locking assembly can be unlocked by inserting an external object into the unlocking hole to push the push rod. The operation is simple and easy.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a lock with an improved deadbolt structure. Background Technology

[0002] Existing locks, especially those for interior doors, consist of a first handle mounted on a first panel and a second handle mounted on a second panel. During installation, the first and second handles are typically linked by a lock bar, and the first and second panels are connected and secured to the door body and latch assembly by bolts. This system presents the following problems.

[0003] 1. If the first and second handles are damaged, the first and second panels need to be removed to replace the handles. In addition, the bolts are exposed on the front of the first or second panel.

[0004] Second, some interior doors, such as bathroom doors, are mostly composed of glass and aluminum profile frames. Since the thickness and shape of the aluminum profiles used in different door bodies are different, the gap between the second and first panels of the lock and the aluminum profile is uncontrollable after the second and first panels are installed. When the gap is less than zero, the lock cannot be installed, and when the gap is too large, it is not aesthetically pleasing.

[0005] Third, most interior door locks only have an inner deadbolt function, while the outer deadbolt cannot be activated, making it impossible to quickly open the interior door in an emergency. Although some interior door locks do have an outer deadbolt function, they still require a key to unlock. In an emergency, the key is still needed to unlock the door. Utility Model Content

[0006] The purpose of this invention is to provide a lock with an improved deadbolt structure that does not require a key and can be unlocked quickly.

[0007] The purpose of this utility model is achieved as follows.

[0008] A lock with an improved deadbolt structure includes a first handle assembly, a second handle assembly, a first panel assembly, a second panel assembly, a bolt assembly, and a lock bar. The first and second handle assemblies are connected by a lock bar passing through the first panel assembly, the bolt assembly, and the second panel assembly. The lock bar has an axially extending through hole containing a push rod. The second handle assembly has an exposed unlocking hole. The outer end of the push rod extends into the unlocking hole, and the inner end of the push rod extends into the first handle assembly. A deadbolt assembly is located within the first handle assembly. The inner end of the push rod is linked to the deadbolt assembly, and the deadbolt assembly has both an unlocked and a deadbolt state. In the deadbolt position, the deadbolt pin of the deadbolt assembly is inserted into the positioning hole of the first panel assembly, and the positions of the first handle assembly and the first panel assembly are relatively fixed. In the unlocked state, external force pushes the push rod to move towards the first handle assembly. The push rod causes the anti-lock pin to disengage from the positioning hole, and the first handle assembly can rotate relative to the first panel assembly.

[0009] Furthermore, the first handle assembly has a mounting cavity, and the deadbolt assembly is movably disposed within the mounting cavity. The deadbolt assembly includes a deadbolt block and a rocker switch assembly. The deadbolt block has the deadbolt pin, and the deadbolt block moves axially along the push rod. The rocker switch assembly includes a button, which extends out of the first handle assembly. The button is rotatably connected to the mounting cavity. One end of the button is linked to the deadbolt block, and the inner end of the push rod is linked to the deadbolt block. When the button is rotated to move the deadbolt block closer to the latch assembly, the deadbolt pin extends out of the first handle assembly and inserts into the positioning hole, and the first handle assembly is in the deadbolt state. When the button is rotated in the opposite direction to pull the deadbolt block away from the latch assembly, the deadbolt pin disengages from the positioning hole and retracts into the first handle assembly, and the first handle assembly is in the unlocked state.

[0010] The deadbolt assembly has a simple locking and unlocking structure, stable and reliable operation, and is not prone to failure.

[0011] Furthermore, the first handle assembly includes a first handle base and a first handle body. The inner side of the first handle body is provided with a first mounting groove, and the outer side of the first handle body is provided with a first clearance hole communicating with the first mounting groove. The outer end face of the first handle base is provided with a second mounting groove, and the inner end face of the first handle base is provided with a second clearance hole communicating with the second mounting groove and a fifth locking hole. The outer end face of the first handle base and the inner side of one end of the first handle body are connected and fixed. The first mounting groove and the second mounting groove communicate to form the mounting cavity. The button is limited to rotate within the first mounting groove. The outer end of the button extends out of the first handle body through the first clearance hole. The deadbolt is limited to move within the second mounting groove. The deadbolt pin of the deadbolt extends into the second clearance hole. The lock bar extends into the fifth locking hole. The lock bar and the fifth locking hole are engaged in a transmission.

[0012] The deadbolt assembly is easy to install and does not interfere with the rotation of the lock bar.

[0013] Furthermore, both sides of the first mounting groove are provided with shaft grooves and limit grooves, which are connected. The rocker switch assembly also includes a rotating shaft, a limit shaft, a push rod, and a limit spring. The two sides of the middle part of the button are rotatably connected by the rotating shaft and the shaft groove. The bottom surface of the middle part of the button extends downward with a swing part. The limit shaft is fixedly set on the swing part. The outer end face of the first handle seat is provided with a groove with an opening facing the limit groove on one side of the second mounting groove. The bottom surface of the groove is provided with a clearance groove corresponding to the swing part. The groove is provided with a third mounting groove on both sides of the clearance groove. The limit spring and the push rod are set in the third mounting groove. The elastic force of the limit spring pushes the top of the push rod to protrude from the bottom surface of the groove. The button rotates around the rotating shaft, the swing part swings in the clearance groove, and drives the limit shaft to move in the groove. In the unlocked state, the limit shaft is on the side of the push rod. In the locked state, the limit shaft moves to squeeze the push rod back into the third mounting groove and overcomes the elastic force of the limit spring, thereby moving to the side of the push rod.

[0014] The button remains locked and unlocked, preventing it from turning on its own and ensuring reliable operation.

[0015] Furthermore, a first linkage shaft is provided at the bottom of one end of the button, and the first linkage shaft is rotatably connected to the top of the linkage rod. A second linkage shaft is provided at the top of the anti-locking block, and the second linkage shaft is rotatably connected to the bottom of the linkage rod.

[0016] The buttons and deadbolts move smoothly and are not prone to failure, making them stable and reliable in use.

[0017] Furthermore, the top of the anti-locking block is provided with two symmetrically arranged protrusions, and the two protrusions are rotatably connected to one end of the second linkage shaft on the opposite side.

[0018] The linkage rod can better push or pull the anti-locking block to move.

[0019] Furthermore, the anti-locking block is provided with a fourth mounting groove, into which the lock bar is inserted and connected for transmission.

[0020] The deadbolt and locking bar are positioned and engaged, making it difficult for the deadbolt to rotate.

[0021] Furthermore, the fourth mounting slot is provided with a first mounting screw hole, and the inner end of the push rod is threadedly connected to the first mounting screw hole.

[0022] The push rod is not easy to disengage from the unlocking hole.

[0023] Furthermore, the bottom surface of the anti-locking block is provided with a second mounting screw hole, and the top of the anti-locking pin is threadedly connected to the second mounting screw hole. The anti-locking pin is a metal anti-locking pin.

[0024] The anti-locking pin is not easily damaged, reducing the manufacturing cost of the anti-locking block.

[0025] Furthermore, in both the locked and unlocked states, the push rod does not extend beyond the unlocking hole.

[0026] The push rod is not easily activated by accident, and the deadbolt function of the lock works normally.

[0027] This new type of lock requires no key; the locking mechanism can be unlocked by inserting an external object into the unlocking hole and pushing the push rod. It is simple and easy to operate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1.

[0029] Figure 2-4 This is a cross-sectional structural diagram of Example 1 (unlocked state).

[0030] Figure 5 This is a schematic diagram of the exploded structure of Example 1.

[0031] Figure 6 and Figure 7 This is a schematic diagram of the installation of the first handle assembly, lock bar, and push rod in Embodiment 1.

[0032] Figure 8 and Figure 9 This is a schematic diagram of the installation of the second handle assembly, lock bar, and push rod in Embodiment 1.

[0033] Figure 10-12 This is a cross-sectional structural diagram of Example 1 (locked state). Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] Example 1, see Figure 1-12 As shown, a lock with an improved deadbolt structure includes a first handle assembly 100, a second handle assembly 500, a first panel assembly 200, a second panel assembly 400, a bolt assembly 300, and a lock bar 700. The lock bar 700 has an axially extending through hole 701, and a push rod 8 is disposed within the through hole 701.

[0036] The first handle assembly 100 has a mounting cavity 101, and the mounting cavity 101 has a deadbolt assembly 1. The deadbolt assembly 1 includes a deadbolt block 11 and a rocker switch assembly 12. The deadbolt block 11 has a deadbolt pin 111. The deadbolt block 11 moves axially along the push rod 8. The rocker switch assembly 12 includes a button 121. The button 121 extends out of the first handle assembly 100. The button 121 is rotatably connected to the mounting cavity 101. One end of the button 121 is linked with the deadbolt block 11, and the inner end of the push rod 8 is linked with the deadbolt block 11.

[0037] See Figure 6 and Figure 7As shown, in this embodiment, the first handle assembly 100 includes a first handle seat 14 and a first handle body 13. The inner side of the first handle body 13 is provided with a first mounting groove 131. Both sides of the first mounting groove 131 are provided with shaft grooves 132 and limiting grooves 133, which communicate with each other. The outer side of the first handle body 13 is provided with a first clearance hole 134 communicating with the first mounting groove 131. The outer end face of the first handle seat 14 is provided with a second mounting groove 141. The inner end face of the first handle seat 14 is provided with a second clearance hole 142 communicating with the second mounting groove 141 and a fifth locking hole 143. The outer end face of the first handle seat 14 is provided with a groove 144 on one side of the second mounting groove 141, with its opening facing the limiting groove 133. The bottom surface of the groove 144 is provided with a clearance groove 145 corresponding to the swing portion 129. The groove 144 is provided with third mounting grooves 146 on both sides corresponding to the clearance groove 145. The outer end face of the first handle base 14 and the inner side of one end of the first handle body 13 are fixed by screws. The first mounting groove 131 and the second mounting groove 141 are connected to form the mounting cavity 101. The button 121 is limited to rotating within the first mounting groove 131. The outer end of the button 121 extends out of the first handle body 13 through the first clearance hole 134. The deadbolt 11 is limited to moving within the second mounting groove 141. The deadbolt pin 111 of the deadbolt 11 extends into the second clearance hole 142.

[0038] The first handle base 14 has a first fastening screw hole 147 on its side that connects to the fifth lock hole 143. A first fastening screw 148 is provided in the first fastening screw hole 147. The lock bar 700 has a first fastening hole 702 on its side. The lock bar 700 is inserted into the fifth lock hole 143. The first fastening hole 702 is aligned with the first fastening screw hole 147. The first fastening screw 148 is tightened. The tail of the first fastening screw 148 is inserted into the first fastening hole 702, so that the first handle assembly 100 and the lock bar 700 are detachably connected at one end.

[0039] The rocker switch assembly 12 also includes a rotating shaft 122, a limiting shaft 123, a push rod 124, and a limiting spring 125. The two sides of the middle portion of the button 121 are rotatably connected via the rotating shaft 122 and the shaft groove 132. A swing portion 129 extends downward from the bottom surface of the middle portion of the button 121, and the limiting shaft 123 is fixedly mounted on the swing portion 129. The limiting spring 125 and the push rod 124 are disposed within the third mounting groove 146. The elastic force of the limiting spring 125 pushes the top of the push rod 124 to protrude from the bottom surface of the groove 144. When the button 121 rotates around the rotating shaft 122, the swing portion 129 swings within the clearance groove 145, causing the limiting shaft 123 to move within the groove 144. In the unlocked state, the limiting shaft 123 is on one side of the push rod 124. In the locked state, the moving limiting shaft 123 presses the push rod 124 back into the third mounting groove 146 and overcomes the elastic force of the limiting spring 125, thereby moving to the side of the push rod 124.

[0040] A first linkage shaft 126 is provided at the bottom of one end of button 121, and the first linkage shaft 126 is rotatably connected to the top of linkage rod 127. The top of the anti-locking block 11 has two symmetrically arranged protrusions 110 and a second linkage shaft 128, with the two protrusions 110 facing each other and rotatably connected to one end of the second linkage shaft 128. The second linkage shaft 128 is rotatably connected to the bottom of linkage rod 127.

[0041] The deadbolt block 11 has a fourth mounting groove 112, and a first mounting screw hole 113 is provided at the top of the fourth mounting groove 112. The locking bar 700 is inserted into the fourth mounting groove 112 and is connected for transmission. The inner end of the push rod 8 is threadedly connected to the first mounting screw hole 113. The bottom surface of the deadbolt block 11 has a second mounting screw hole 114, and the top of the deadbolt pin 111 is threadedly connected to the second mounting screw hole 114. Preferably, the deadbolt pin 111 is a metal deadbolt pin 111.

[0042] The first panel assembly 200 includes a first lock box 21 and a first decorative cover 22. The inner side of the first decorative cover 22 has a first movable groove 221, and the side of the first movable groove 221 has a first protruding buckle 222. The upper and lower sides of the first lock box 21 have first L-shaped slots 211. The first protruding buckle 222 is inserted into the first L-shaped slot 211, and the first lock box 21 is placed within the first movable groove 221. The tail of the first decorative cover 22 and the first lock box 21 are connected by a first adjusting screw 224. Specifically, the tail of the first lock box 21 has a first screw hole 212, and the first lock box 21 has a first clearance cavity 213 corresponding to the first screw hole 212. The first decorative cover 22 has a first countersunk hole 223. The tail of the first adjusting screw 224 passes through the first countersunk hole 223 and is threadedly connected to the first screw hole 212, and the head of the first adjusting screw 224 is placed within the first countersunk hole 223. The thickness of the head of the first decorative cover 22 decreases inward from back to front, forming a first abutment surface 20 on the end face of the head of the first decorative cover 22. In this embodiment, the first lock box 21 is provided with a first reset mechanism that is driven and cooperates with the lock bar 700. The first reset mechanism is prior art and will not be described in detail in this embodiment. The first decorative cover 22 is provided with a first clearance elongated hole 225 corresponding to the lock bar 700. The first lock box 21 is provided with a positioning hole 214 corresponding to the first clearance elongated hole 225.

[0043] The latch assembly 300 is disposed in the drive hole through which the lock bar 700 passes. The latch assembly 300 is prior art and will not be described in detail in this embodiment.

[0044] See Figure 2 and Figure 5As shown, the second panel assembly 400 includes a second lock box 41 and a second decorative cover 42. The inner side of the second decorative cover 42 has a second movable groove 421, and the side of the second movable groove 421 has a second protruding buckle 422. The upper and lower sides of the second lock box 41 have second L-shaped slots 411. The second protruding buckle 422 is inserted into the second L-shaped slot 411, and the second lock box 41 is placed within the second movable groove 421. The tails of the second decorative cover 42 and the second lock box 41 are connected by a second adjusting screw 424. The thickness of the head of the second decorative cover 42 decreases inward from back to front, so that the end face of the head of the second decorative cover 42 forms a second abutment surface 40. Specifically, the second lock box 41 has a second screw hole 412 at its tail end, and a second clearance cavity 413 corresponding to the second screw hole 412. The second decorative cover 42 has a second countersunk hole 423. The tail end of the second adjusting screw 424 passes through the second countersunk hole 423 and the second screw hole 412 and is threadedly connected. The head of the second adjusting screw 424 is placed in the second countersunk hole 423. In this embodiment, the second lock box 41 is provided with a second reset mechanism that is driven and cooperates with the lock bar 700. The second reset mechanism is prior art and will not be described in detail in this embodiment. The second decorative cover 42 has a second clearance elongated hole 425 corresponding to the lock bar 700.

[0045] See Figure 8 and Figure 9 As shown, the second handle assembly 500 has an exposed unlocking hole 50. The second handle assembly 500 contains a self-locking device 600. The second handle assembly 500 includes a second handle base 52 and a second handle body 51. The outer end face of the second handle base 52 and the inner side of one end of the second handle body 51 are connected and fixed. A self-locking mounting cavity 53 is formed between the second handle base 52 and the second handle body 51. The second handle base 52 has a fourth locking hole 54 and a positioning insertion hole 55. The unlocking hole 50, the fourth locking hole 54, and the positioning insertion hole 55 all communicate with the self-locking mounting cavity 53.

[0046] The self-locking device 600 includes a first fixed base 61, a second fixed base 62, two self-locking plates 63, and two self-locking springs 64. One of the opposing surfaces of the first fixed base 61 and the second fixed base 62 is a self-locking inclined surface 611, and the other is a flat surface 621. The self-locking springs 64 and the self-locking plates 63 are disposed between the first fixed base 61 and the second fixed base 62. The self-locking springs 64 cause the self-locking plates 63 to tilt towards the self-locking inclined surface 611. The first fixed base 61, the second fixed base 62, and the self-locking plates 63 are respectively provided with axially aligned first locking holes 610, second locking holes 620, and third locking holes 630. The self-locking device 600 is positioned within the self-locking mounting cavity 53, aligning the fourth locking hole 54 and the second locking hole 620. In this embodiment, the lock bar 700 has a square cross-section, and the corresponding first locking hole 610, second locking hole 620, third locking hole 630, fourth locking hole 54, and fifth locking hole 143 are all square holes. When the self-locking plate 63 is aligned, i.e., in a vertical position, the locking bar 700 can freely pass through the third locking hole 630. If the self-locking plate 63 is tilted, the third locking hole 630 tilts along with the self-locking plate 63, the gap between the locking bar 700 and the third locking hole 630 is eliminated, and the third locking hole 630 restricts the movement of the locking bar 700. The gap between the locking bar 700 and the third locking hole 630 determines the tilt angle required for the self-locking plate 63 to lock.

[0047] Specifically, the first fixing seat 61 and the second fixing seat 62 abut against both ends of the mounting cavity 101, respectively. The side with the smallest gap between the self-locking inclined surface 611 and the plane 621 clamps one side of the self-locking piece 63. The plane 621 with the largest gap between the self-locking inclined surface 611 and the plane 621 is provided with a fixing groove 623, which is parallel to the locking bar 700. A self-locking spring 64 is disposed within the fixing groove 623, with one end of the self-locking spring 64 abutting against the bottom surface of the fixing groove 623, and the self-locking spring 64 extending out of the fixing groove 623 to abut against the self-locking piece 63. One of the first fixing seat 61 and the second fixing seat 62, corresponding to the side with the smallest gap between the self-locking inclined surface 611 and the plane 621, is provided with a positioning protrusion 612, and the other with a positioning slot 622. The corresponding self-locking piece 63 is provided with a clearance notch 631, through which the positioning protrusion 612 passes and inserts into the positioning slot 622. The self-locking piece 63 swings relative to the positioning protrusion 612 through the clearance notch 631.

[0048] In this embodiment, the first fixing base 61 is provided with the self-locking inclined surface 611 and the positioning protrusion 612, and the self-locking inclined surface 611 is inclined away from the second fixing base 62. The second fixing base 62 is provided with the plane 621 and the positioning slot 622. The first fixing base 61 is provided with a positioning pin, which is inserted into the positioning hole 55 to form the limiting connection. The side of the second handle assembly 500 is provided with an unlocking hole 56 that communicates with the self-locking mounting cavity 53, and the inner end of the unlocking hole 56 faces the side with the largest distance between the self-locking inclined surface 611 and the plane 621.

[0049] Preferably, the second handle base 52 has a second fastening screw hole 57 on its side that connects to the fourth lock hole 54. A second fastening screw 58 is provided in the second fastening screw hole 57. The lock bar 700 has a second fastening hole 703 on its side. The lock bar 700 is inserted into the fourth lock hole 54. The second fastening hole 703 is aligned with the second fastening screw hole 57. The second fastening screw 58 is tightened. The tail of the second fastening screw 58 is inserted into the second fastening hole 703, so that the other end of the second handle assembly 500 and the lock bar 700 can be detachably connected, further improving the connection firmness of the first handle assembly 100, the lock bar 700 and the second handle assembly 500.

[0050] In this embodiment, the first panel assembly 200 and the second panel assembly 400 have the same structure and are arranged symmetrically inside and outside the door, that is, the first lock box 21 and the second lock box 41 have the same structure, and the first decorative cover 22 and the second decorative cover 42 have the same structure.

[0051] Universal lock installation process. The latch assembly 300 is installed into the door body, and the first panel assembly 200 and the second panel assembly 400 are respectively placed on the inner and outer sides of the door body. The first fixing box, the latch assembly 300, and the second fixing box are fastened to the door body with bolts. The first decorative cover 22 and the first lock box 21 are snap-fitted together, and the second decorative cover 42 and the second lock box 41 are snap-fitted together. The first decorative cover 22 and the second decorative cover 42 cover the bolts used to connect the first fixing box and the second fixing box.

[0052] The first handle assembly 100 aligns the locking bar 700 through the first clearance elongated hole 225 of the first decorative cover 22, the first lock box 21, the transmission hole of the latch assembly 300, the second lock box 41, and the second clearance elongated hole 425 of the second decorative cover 42 before inserting it into the second handle assembly 500 for connection. Specifically, the locking bar 700 is inserted into the first lock hole 610 from the fourth lock hole 54. When the locking bar 700 passes through the third lock hole 630, the pushing force of the locking bar 700 causes the self-locking plate 63 to move and align towards the plane 621. The locking bar 700 can then pass through the third lock hole 630 and continue to be inserted into the second lock hole 620. After the locking bar 700 stops being inserted, the self-locking spring 64 pushes the self-locking plate 63 to tilt, causing the third lock hole 630 to tilt and lock the locking bar 700. The outer end of the push rod 8 is inserted into the unlocking hole 50. During this process, as the locking bar 700 is inserted, the distance between the first handle assembly 100 and the second handle assembly 500 decreases, thereby achieving a self-locking connection between the first handle assembly 100 and the second handle assembly 500.

[0053] Tighten the first adjusting screw 224. The first adjusting screw 224 pushes the first decorative cover 22 to move, that is, the first decorative cover 22 moves relative to the first lock box 21 within the first L-shaped slot 211. The tail of the first adjusting screw 224 inserts into the first clearance cavity 213, so that the first abutting surface 20 of the head of the first decorative cover 22 abuts against the door body. During the movement of the first decorative cover 22, the lock bar 700 remains within the first clearance elongated hole 225. Tighten the second adjusting screw 424. The second adjusting screw 424 pushes the second decorative cover 42 to move, that is, the second decorative cover 42 moves relative to the second lock box 41 within the second L-shaped slot 411. The tail of the second adjusting screw 424 inserts into the second clearance cavity 413, and the second abutting surface 40 of the head of the second decorative cover 42 abuts against the door body (as shown in the profile). During the movement of the second decorative cover 42, the lock bar 700 remains within the second clearance elongated hole 425. This eliminates the installation gap between the door body and the first panel assembly 200 and the second panel assembly 400. Generally, the latch assembly 300, the first panel assembly 200, and the second panel assembly 400 are pre-installed on the door body. The first handle assembly 100 and the second handle assembly 500 are then installed subsequently.

[0054] During the disassembly process of the first handle assembly 100 and the second handle assembly 500, an external object (such as a flathead screwdriver) is inserted into the unlocking socket 56 to align the self-locking plate 63, causing the locking bar 700 to disengage from the second locking hole 620. In the accompanying drawings of this embodiment, the self-locking plate 63 has a relatively large tilt angle to facilitate a visual understanding of the self-locking process of the first handle assembly 100 and the second handle assembly 500. In practice, the tilt angle is relatively small, and the self-locking plate 63 will not conform to the self-locking inclined surface 611; that is, a gap is left between the self-locking plate 63 and the self-locking inclined surface 611 for the insertion of an external object.

[0055] Universal lock usage process. The universal lock has a deadbolt state and an unlocked state. In the deadbolt state, pressing button 121 rotates the button 121, which in turn pushes the deadbolt block 11 closer to the bolt assembly 300 via the first linkage shaft 126, linkage rod 127, and second linkage shaft 128. The deadbolt block 11 drives the deadbolt pin 111 to move, extending out of the second clearance hole 142, passing through the first clearance elongated hole 225, and inserting into the positioning hole 214 of the first lock box 21. The positions of the first handle assembly 100 and the first panel assembly 200 are relatively fixed, that is, the first handle assembly 100 cannot be rotated, and consequently the lock bar 700 cannot be rotated, thus achieving the deadbolt purpose. Simultaneously, the rotation of button 121 drives the swing part 129 and the limiting shaft 123 to rotate. The limiting shaft 123 presses the top rod 124 back into the third mounting groove 146 and rotates against the elastic force of the limiting spring 125 until the limiting shaft 123 is located on the right side of the top rod 124. The spring force pushes the top rod 124 to reset. The top rod 124 restricts the movement of the limiting shaft 123 to the left side of the top rod 124, so that button 121 remains in the locked state.

[0056] In the unlocked state, pressing button 121 causes it to rotate in the opposite direction, pulling the anti-lock block 11 away from the latch assembly 300. The anti-lock block 11 then moves the anti-lock pin 111, disengaging it from the positioning hole 214 and the first clearance slot 225 and retracting it into the second clearance hole 142. This allows the first handle assembly 100 to rotate relative to the first panel assembly 200. Simultaneously, the rotation of button 121 causes the swing part 129 and the limiting shaft 123 to rotate. The limiting shaft 123 presses the top rod 124 back into the third mounting groove 146 and rotates against the spring force of the limiting spring 125 until the limiting shaft 123 is located to the left of the top rod 124. The spring force then pushes the top rod 124 back to its original position, restricting the movement of the limiting shaft 123 to the right side of the top rod 124, thus keeping button 121 in the unlocked state.

[0057] In this embodiment, the universal lock is mostly used for interior doors, such as bathroom doors. The first handle assembly 100 is usually located inside the bathroom, and the second handle assembly 500 is located outside the bathroom. The locking and unlocking of the universal lock are achieved through the first handle assembly 100.

[0058] Of course, in special circumstances, by inserting a foreign object into the unlocking hole 50 of the second handle assembly 500, the foreign object pushes the push rod 8 towards the push block, that is, the push rod 8 extends out of the third clearance hole towards the first contact slope. The push rod 8 presses against the first contact slope, causing the push block to move in the opposite direction. The first abutment surface 621 and the second abutment surface 621 disengage, and the first contact slope and the second contact slope come into contact. The elastic force of the anti-lock spring pushes the anti-lock block 11 to reset, that is, the anti-lock pin 111 disengages from the positioning hole 214 and the first clearance elongated hole 225 and retracts into the second clearance hole 142. The first handle assembly 100 can rotate relative to the first panel assembly 200, that is, the second handle assembly 500 can also rotate relative to the second panel assembly 400. This allows for convenient and quick opening of the lock, avoiding damage to the door and the lock.

[0059] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0060] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0061] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0062] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A lock with an improved deadbolt structure, comprising a first handle assembly (100), a second handle assembly (500), a first panel assembly (200), a second panel assembly (400), a bolt assembly (300), and a lock bar (700), wherein the first handle assembly (100) and the second handle assembly (500) are connected by a lock bar (700) passing through the first panel assembly (200), the bolt assembly (300), and the second panel assembly (400), characterized in that, The lock bar (700) has a through hole (701) along the axial direction. A push rod (8) is provided in the through hole (701). The second handle assembly (500) has an exposed unlocking hole (50). The outer end of the push rod (8) extends into the unlocking hole (50), and the inner end of the push rod (8) extends into the first handle assembly (100). The first handle assembly (100) has a deadbolt assembly (1). The inner end of the push rod (8) is linked with the deadbolt assembly (1). The deadbolt assembly (1) has an unlocked state and a deadbolt state when it is activated. In the deadbolt state, the deadbolt pin (111) of the deadbolt assembly (1) is inserted into the positioning hole (214) of the first panel assembly (200), and the positions of the first handle assembly (100) and the first panel assembly (200) are relatively fixed. In the unlocked state, an external force pushes the push rod (8) to move towards the first handle assembly (100), and the push rod (8) causes the anti-lock pin (111) to disengage from the positioning hole (214), allowing the first handle assembly (100) to rotate relative to the first panel assembly (200).

2. The lock with the improved deadbolt structure according to claim 1, characterized in that, The first handle assembly (100) has a mounting cavity (101). The deadbolt assembly (1) is movably disposed in the mounting cavity (101). The deadbolt assembly (1) includes a deadbolt block (11) and a rocker switch assembly (12). The deadbolt block (11) is provided with the deadbolt pin (111). The deadbolt block (11) moves axially along the push rod (8) with the deadbolt block (11). The rocker switch assembly (12) includes a button (121). The button (121) extends out of the first handle assembly (100). The button (121) and the mounting cavity (101) are rotatably connected. One end of the button (121) is connected to the deadbolt block (11). The push rod (8) and the anti-lock block (11) are linked. When the button (121) is turned to drive the anti-lock block (11) to move closer to the latch assembly (300), the anti-lock pin (111) extends out of the first handle assembly (100) and inserts into the positioning hole (214). The first handle assembly (100) is in the anti-lock state. When the button (121) is turned in the opposite direction to pull the anti-lock block (11) to move away from the latch assembly (300), the anti-lock pin (111) disengages from the positioning hole (214) and retracts into the first handle assembly (100). The first handle assembly (100) is in the unlocked state.

3. The lock with the improved deadbolt structure according to claim 2, characterized in that, The first handle assembly (100) includes a first handle seat (14) and a first handle body (13). The inner side of the first handle body (13) is provided with a first mounting groove (131), and the outer side of the first handle body (13) is provided with a first clearance hole (134) communicating with the first mounting groove (131). The outer end face of the first handle seat (14) is provided with a second mounting groove (141), and the inner end face of the first handle seat (14) is provided with a second clearance hole (142) communicating with the second mounting groove (141) and a fifth lock hole (143). The outer end face of the first handle seat (14) and the inner side of one end of the first handle body (13) are connected. The connection is fixed, the first mounting groove (131) and the second mounting groove (141) are connected to form the mounting cavity (101), the button (121) is limited to rotate in the first mounting groove (131), the outer end of the button (121) extends out of the first handle body (13) through the first clearance hole (134), the anti-locking block (11) is limited to move in the second mounting groove (141), the anti-locking pin (111) of the anti-locking block (11) extends into the second clearance hole (142), the lock bar (700) extends into the fifth lock hole (143), and the lock bar (700) and the fifth lock hole (143) are driven and cooperated.

4. The lock with the improved deadbolt structure according to claim 3, characterized in that, The first mounting groove (131) has a shaft groove (132) and a limiting groove (133) on both sides. The shaft groove (132) and the limiting groove (133) are connected. The rocker switch assembly (12) also includes a rotating shaft (122), a limiting shaft (123), a push rod (124) and a limiting spring (125). The two sides of the middle part of the button (121) are rotatably connected by the rotating shaft (122) and the shaft groove (132). The bottom surface of the middle part of the button (121) extends downward with a swing part (129). The limiting shaft (123) is fixedly set on the swing part (129). The outer end face of the first handle seat (14) has a groove (144) with an opening facing the limiting groove (133) on one side of the second mounting groove (141). The bottom surface of the groove (144) has a clearance groove (145) corresponding to the swing part (129). The groove (144) is provided with a third mounting groove (146) on both sides of the relief groove (145). The limiting spring (125) and the top rod (124) are set in the third mounting groove (146). The elastic force of the limiting spring (125) pushes the top of the top rod (124) to protrude from the bottom surface of the groove (144). The button (121) rotates around the rotating shaft (122). The swing part (129) swings in the relief groove (145) and drives the limiting shaft (123) to move in the groove (144). In the unlocked state, the limiting shaft (123) is on the side of the top rod (124). In the locked state, the limiting shaft (123) moves to squeeze the top rod (124) back into the third mounting groove (146) and overcomes the elastic force of the limiting spring (125), thereby moving to the side of the top rod (124).

5. The lock with the improved deadbolt structure according to claim 3, characterized in that, The button (121) has a first linkage shaft (126) at one bottom, and the first linkage shaft (126) and the linkage rod (127) are rotatably connected at the top. The anti-locking block (11) has a second linkage shaft (128) at the top, and the second linkage shaft (128) and the linkage rod (127) are rotatably connected at the bottom.

6. The lock with the improved deadbolt structure according to claim 5, characterized in that, the deadbolt... The top of the locking block (11) is provided with two symmetrically arranged protrusions (110), and the two protrusions (110) are rotatably connected to one end of the second linkage shaft (128) on the opposite side.

7. The lock with the improved deadbolt structure according to claim 3, characterized in that, the deadbolt... The locking block (11) is provided with a fourth mounting groove (112), and the locking bar (700) is inserted into the fourth mounting groove (112) and connected by transmission.

8. The lock with the improved deadbolt structure according to claim 7, characterized in that, The fourth mounting slot (112) is provided with a first mounting screw hole (113), and the inner end of the push rod (8) is threadedly connected to the first mounting screw hole (113).

9. The lock with the improved deadbolt structure according to claim 1, characterized in that, the deadbolt... The bottom surface of the locking block (11) is provided with a second mounting screw hole (114), and the top of the anti-locking post (111) is threadedly connected to the second mounting screw hole (114). The anti-locking post (111) is a metal anti-locking post (111).

10. The lock with the improved deadbolt structure according to claim 1, characterized in that, In both the locked and unlocked states, the push rod (8) does not extend beyond the unlocking hole (50).

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