A pop-out handle recessed handleless lever lock

Abstract

The application provides a sunken type rocker handle lock with automatic pop-out handle, which comprises a lock cylinder, a lock tongue, a handle and a lock shell, one end of the handle is hinged to the lock shell, the other end of the handle is a movable end, further comprising a transmission member, the transmission member and the lock tongue are in transmission connection with the lock cylinder, and a first jacking structure is arranged on the transmission member; the lock cylinder, the lock tongue and the transmission member are arranged on the lock shell, a locking groove and a second jacking structure are arranged on the handle, or the lock cylinder and the transmission member are arranged on the handle, and the lock shell is provided with the locking groove and the second jacking structure; when the lock cylinder rotates in an unlocking direction, the lock tongue leaves the locking groove, the first jacking structure and the second jacking structure move towards each other and contact, so that the movable end of the handle moves away from the lock shell. The user can realize the unlocking and jacking of the handle through one action of rotating the key, avoiding the situation that the handle is stuck in the lock shell.

Description

Technical Field

[0001] This application relates to a lock, and more particularly to a recessed crank lock with an automatically pop-out handle. Background Technology

[0002] Crank locks are a common type of lock, generally consisting of a lock body, bolt, and handle. These locks have advantages such as small footprint and high protection level, and are therefore widely used in industrial cabinets, engineering machinery equipment, communications and rail locomotives.

[0003] When opening a crank lock, you usually first turn the key to open the lock cylinder to unlock the handle, and then turn the handle to activate the latch system behind the door to unlock the door, as shown in patent KR200178635Y1.

[0004] The recessed crank lock (or concealed crank lock) has the handle embedded in a groove in the lock body. Since the handle does not protrude from the surface of the lock body, it can maintain the original size of the cabinet and is not easy to collide with, so it is widely used.

[0005] However, existing recessed crank locks also have drawbacks: when the handle is in the retracted or hidden state, the handle will deflect due to the large reaction force of the latch system on the handle and generate friction between it and the groove, so the handle may occasionally get stuck in the groove.

[0006] The existing design solution is to leave a certain space at the end of the handle, so that the handle can be pried out by hand after unlocking, as shown in patent CN222745851U. However, this solution disrupts the overall planar shape of the recessed crank lock, affecting its aesthetics, and adds the action of prying out the handle when opening the door.

[0007] Another solution, as shown in patent TW312283U, is to install a torsion spring at the handle connection point. The spring force of the torsion spring will automatically pop the handle out after unlocking. However, since the torsion spring torque cannot be designed to be too large (too large a torsion spring torque will cause the handle to pop out too quickly and make it difficult to press the handle back into the groove), the handle will often fail to pop out properly. Utility Model Content

[0008] The objective of this application is to provide a recessed crank lock with an automatically popping handle to solve the problem of the handle failing to pop out properly.

[0009] To achieve the above objectives, this application provides a retractable crank lock with an automatically pop-out handle, comprising a lock cylinder, a bolt, a handle, and a lock housing. One end of the handle is hinged to the lock housing, and the other end of the handle is a movable end. The lock also includes a transmission component, which and the bolt are both throttle-connected to the lock cylinder. The transmission component has a first lifting structure. The lock cylinder, bolt, and transmission component are disposed on the lock housing, and the handle has a locking groove and a second lifting structure. Alternatively, the lock cylinder and transmission component are disposed on the handle, and the lock housing has a locking groove and a second lifting structure. When the lock cylinder rotates in the unlocking direction, the bolt leaves the locking groove, and the first and second lifting structures move towards each other and contact each other, causing the movable end of the handle to move away from the lock housing.

[0010] In the above solution, when the lock cylinder rotates, it causes the bolt to leave the locking groove, unlocking the handle. Simultaneously, it causes the first and second lifting structures to move towards each other and make contact, lifting the handle. This means the user can unlock and lift the handle with a single key turn, preventing the handle from getting stuck in the lock case.

[0011] In a further technical solution, the lock cylinder, bolt, and transmission component are all housed within a fixed block. This fixed block is located inside the lock housing and on the outside of the movable end of the handle. The locking groove and the second lifting structure are both located on the movable end of the handle. By separating the lock cylinder from the handle, the lock cylinder's position remains unchanged, making key insertion and removal more convenient.

[0012] A further technical solution includes a first protrusion on the upper surface of the transmission member, the first protrusion having a first inclined contact surface; and a second protrusion on the lower surface of the movable end of the handle, the second protrusion having a second inclined contact surface, the second inclined contact surface being inclined in the opposite direction but at the same angle as the first inclined contact surface. Through these technical means, the resistance between the first and second lifting structures can be reduced, thereby making the key rotation easier.

[0013] A further technical solution involves forming a movable space between the lower surface of the movable end of the handle and the lock housing. In the locked state, the first lifting structure of the transmission component is located within this movable space. Through these technical means, the transmission component can be completely housed below the handle, maintaining the flatness of the lock housing surface.

[0014] A further technical solution involves maintaining a first distance between the first and second lifting structures in the locked state. The length of this first distance ensures that the bolt has disengaged from the locking groove before the first and second inclined contact surfaces come into contact. This technical means delays the lifting action, ensuring that when the key is turned, the bolt is unlocked first, followed by the handle's lifting. This prevents the handle from jamming if it is lifted before the bolt has retracted.

[0015] A further technical solution involves the transmission component being sleeved on the lower end of the lock cylinder. The transmission component has a cam structure, and the latch has a mating groove that abuts against the outer side of the cam structure. When the latch drives the transmission component to rotate, the cam structure pushes the latch in a linear motion. Through this technical means, the transmission component alone can achieve both the lifting of the handle and the transmission of the latch, simplifying the structure.

[0016] A further technical solution involves providing an oblong hole along the direction of the lock tongue, through which the lock cylinder passes. This technical approach effectively limits the movement of the lock tongue, ensuring its proper direction of motion.

[0017] A further technical solution involves providing a spring fixing part on the side of the latch away from the handle, and a return spring between the spring fixing part and the fixing block. Through these technical means, the latch can be automatically reset, and the return spring also ensures that the latch remains inserted in the locking groove when locked, preventing unlocking due to shaking.

[0018] A further technical solution involves connecting the hinged end of the handle to a rotating shaft via a pin. The rotating shaft passes through the lock housing and is limited by a nut. A torsion spring is sleeved on the pin, with one end inserted into the rotating shaft and the other end abutting against the lower surface of the handle. Through these technical means, after unlocking the handle, the torque of the torsion spring and the lifting force work together to ensure the handle automatically pops out.

[0019] A further technical solution involves a limiting component sleeved on the rotating shaft, located on the back of the lock housing. Extending limiting arms are connected to both sides of the limiting component. A further limiting structure is provided on the back of the lock housing, restricting the rotation range of the limiting arms within the space between these limiting structures. Through these technical means, the rotation direction and angle of the handle are limited.

[0020] Compared with the prior art, the sinking crank lock with automatic pop-out handle provided in this application has the following advantages:

[0021] By incorporating a first and second lifting structure that work in tandem, the rotation of the lock cylinder causes the bolt to disengage from the locking groove, unlocking the handle. Simultaneously, the first and second lifting structures move towards each other and come into contact, lifting the handle. This means the user can unlock and lift the handle with a single key turn, preventing the handle from getting stuck in the lock case. Both the lifting and unlocking actions originate from the rotation of the lock cylinder, simplifying the user's operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application (in a locked state);

[0024] Figure 2 This is an exploded view of an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of some components in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram showing the positional relationship between the transmission component and the handle from the locked state to the unlocked state in an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the handle structure according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the lock cylinder, lock tongue, and transmission component structure according to an embodiment of this application;

[0029] Figure 7 yes Figure 6 Bottom view;

[0030] Figure 8 This is a schematic diagram of the overall structure from another perspective of an embodiment of this application;

[0031] Figure 9 This is a schematic diagram of the unlocking process.

[0032] Figure 10 This is a schematic diagram of the locking process.

[0033] Wherein: 1000 - Recessed crank lock with automatic pop-out handle; 110 - Lock cylinder; 120 - Lock tongue; 120a - Reset slope; 121 - Mating groove; 121a - End; 122 - Waist-shaped hole; 123 - Spring fixing part; 130 - Transmission component; 131 - First lifting structure; 131a - First protrusion; 131b - First inclined contact surface; 132 - Cam structure; 140 - Fixing block; 150 - Reset spring; 210 - Handle; 210a-Hinged end; 210b-Moving end; 211-Locking groove; 212-Second lifting structure; 212a-Second protrusion; 212b-Second inclined contact surface; 310-Lock housing; 311-Groove; 313-First limiting structure; 314-Second limiting structure; 220-Pin; 240-Rotating shaft; 250-O-ring; 260-Limiting component; 261-Limiting arm; 270-Knurled pin; 280-Nut. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] See Figure 1 and Figure 2 This application provides a recessed crank lock 1000 with an automatically pop-out handle, including a lock cylinder 110, a bolt 120, a handle 210, and a lock housing 310. The lock housing 310 is fixedly mounted on the door panel. One end of the handle 210 is a hinged end 210a, which is hinged to the lock housing 310 and is connected to the latch system behind the door panel via a pivot 240. The other end of the handle is a movable end 210b, which can be lifted and then rotated clockwise or counterclockwise to lock or unlock the latch.

[0037] As an improvement, this recessed crank lock also includes a transmission component 130, which and the latch 120 are both connected to the lock cylinder 110. The transmission component 130 is provided with a first lifting structure 131. The lock cylinder 110, the latch 120 and the transmission component 130 are disposed in a fixing block 140, which is connected to the lock housing 310 by bolts.

[0038] See Figure 5 The handle 210 is provided with a locking groove 211 and a second lifting structure 212. (See also...) Figure 4 When the lock cylinder 110 rotates in the unlocking direction, the lock tongue 120 leaves the locking groove 211, the first lifting structure 131 and the second lifting structure 212 move towards each other and come into contact, and the movable end of the handle 210 moves away from the lock case, that is, the handle 210 is pushed out, making it convenient for the user to grip.

[0039] When the user inserts the key into the lock cylinder 110 and rotates it, the rotation of the lock cylinder 110 causes the bolt 120 to disengage from the locking groove 211, unlocking the handle 210. Simultaneously, it causes the first lifting structure 131 and the second lifting structure 212 to move towards each other and make contact, thus lifting the handle 210. This design achieves both unlocking and lifting of the handle 210 with a single key turn, which is simple, efficient, and avoids the handle 210 getting stuck in the lock housing 310.

[0040] It should be noted that in this embodiment, the lock cylinder 110, the lock tongue 120, and the transmission component 130 are all disposed in the fixing block 140. The fixing block 140 is disposed in the groove 311 on the surface of the lock housing 310, and the handle 210 is also located in the groove 311. Thus, the entire lock structure does not extend beyond the front surface of the lock housing 310, avoiding the occupation of extra space and reducing the possibility of collision with passing personnel.

[0041] In this embodiment, the lock cylinder 110, lock tongue 120, transmission component 130, and fixing block 140 are all located at the extension line of the end of the handle 210 and are aligned with the handle 210 as a whole, resulting in a smoother overall lock body profile. In a possible embodiment, the lock cylinder 110, lock tongue 120, transmission component 130, and fixing block 140 can also be located on the side of the end of the handle 210, and the orientation of the lock tongue 120 and transmission component 130, as well as the position of the locking groove 211 and the second lifting structure 212, can be adjusted.

[0042] In another possible embodiment, the lock cylinder, bolt, and transmission components can all be mounted on the handle. Correspondingly, the locking groove and the second lifting structure can be mounted on the inner wall of the groove on the lock housing, which can also achieve the functions of unlocking and lifting the handle.

[0043] In this embodiment, the lock cylinder 110 and handle 210 are designed to be separate, which allows the position of the lock cylinder 110 to remain unchanged, making it easier to insert and remove the key.

[0044] See Figure 6 The first lifting structure 131 includes a first protrusion 131a disposed on the upper surface of the transmission member 130, the first protrusion 131a having a first inclined contact surface 131b.

[0045] See Figure 5 The second lifting structure 212 includes a second protrusion 212a disposed on the lower surface of the movable end of the handle 210, the second protrusion 212a having a second inclined contact surface 212b.

[0046] The second inclined contact surface 212b is inclined in the opposite direction and at the same angle to the first inclined contact surface 131b. For example, in this embodiment, the first inclined contact surface 131b is inclined upward relative to the horizontal surface, and the second inclined contact surface 212b is inclined downward relative to the horizontal surface. Both are inclined at approximately 45°, so that during the lifting process, the friction between the first protrusion 131a and the second protrusion 212a is small, and excessive resistance is not generated, which facilitates the rotation of the lock cylinder 110 and makes it easier for the user to turn the key.

[0047] See Figure 5 The lower surface 213 of the movable end 210b of the handle 210 is retracted, thereby forming a movable space between it and the lock housing 310. For example... Figure 3 As shown, in the locked state, the first lifting structure 131 of the transmission member 130 is housed in the active space, that is, the transmission member 130 is completely housed below the handle 210, thereby keeping the surface of the lock case 310 flat.

[0048] like Figure 3 As shown, in the locked state, the first lifting structure 131 and the second lifting structure 212 are not directly attached or in contact, but are separated by a first distance d. Figure 4 As shown, the length of the first distance d must be sufficient to ensure that the latch 120 has disengaged from the locking groove 211 before the first inclined contact surface 131b and the second inclined contact surface 212b come into contact during the rotation of the transmission component 130. This design delays the lifting action, ensuring that when the user turns the key, the latch is unlocked first, and then the handle is lifted, preventing the handle from jamming if it is lifted before the latch has retracted.

[0049] See Figure 6 and Figure 7The transmission component 130 is sleeved on the lower end of the lock cylinder 110 and limited by the retaining ring 160. When the lock cylinder 110 rotates, it drives the transmission component 130 to rotate. The transmission component 130 is provided with a cam structure 132, and the latch is provided with a mating groove 121. The latch 120 is provided on the transmission component 130, and the mating groove 121 partially surrounds the outer side of the circumferential surface of the transmission component 130, with its end 121a abutting against the outer side of the cam structure 132 of the transmission component. The latch 120 is limited by the fixing block 140, so that when the transmission component 130 rotates, the cam structure 132 pushes the latch 120 to move linearly. This structure only requires the transmission component 130 to achieve the two functions of lifting the handle 210 and driving the latch 120, so the structure of the lock cylinder is very simple and the number of parts is also very small.

[0050] Preferably, see Figure 6 and Figure 7 A waist-shaped hole 122 can be provided on the bolt 120 along its direction of movement. The lock cylinder 110 passes through the waist-shaped hole 122, thereby limiting the bolt 120 and ensuring that the direction of movement of the bolt 120 will not deviate to the left or right.

[0051] like Figure 2 and Figure 7 As shown, a return spring 150 is provided between the side of the latch 120 away from the handle 210 and the fixing block 140. To fix the return spring 150, a spring fixing part 123 is provided on the latch 120, and the end of the return spring 150 is sleeved on the spring fixing part 123. By providing the return spring 150, the latch 120 and the transmission component 130 can be automatically reset after the key has been turned. In addition, the return spring 150 also ensures that when locked, the latch 120 is always inserted into the locking groove 211 and will not mislock due to shaking.

[0052] In addition, a reset slope 120a can be provided at the end of the latch 120, so that when the handle 210 is pressed back into the lock housing, the latch 120 is squeezed and avoided, and then when the handle 210 is pressed down to the position, the latch 120 is inserted into the locking groove 211 under the action of the reset spring 150, thereby locking the handle 210.

[0053] See Figure 2 and Figure 3The hinge end 210a of the handle 210 is connected to the rotating shaft 240 via a pin 220. The rotating shaft 240 passes through the lock housing 310 and is limited by an O-ring 250 and a nut 280. A torsion spring 230 is sleeved on the pin 220. One end of the torsion spring 230 is inserted into and fixed in the rotating shaft 240, while the other end of the torsion spring 230 abuts against the lower surface of the handle 210, thereby providing a spring-loaded force to the handle 210. By setting the torsion spring 230, after unlocking and lifting the handle 210, the elastic force of the torsion spring 230 causes the handle 210 to continue to rise, eventually reaching a structural limit position of approximately 35°, thus achieving a fully extended handle 210, making it convenient for the user to grip directly.

[0054] See Figure 1 , 2 3. To limit the rotation angle of the handle 210, a limiting member 260 is fitted onto the pivot 240. When installed, the limiting member 260 is located on the back of the lock housing 310. The limiting member 260 has outwardly extending limiting arms 261 connected to both sides. The back of the lock housing also has a limiting structure, for example... Figure 8 The first limiting structure 313 and the second limiting structure 314 shown in the figure restrict the rotation range of the limiting member 260 between the two limiting structures. Figure 8 The state shown is the state after the handle is rotated 90°. In the locked state, the two limiting arms 261 of the limiting member 260 are in the middle position, so that after the handle 210 is unlocked, it can be rotated 90° clockwise or 90° counterclockwise, which is convenient for users with different habits.

[0055] A knurled pin 270 is also provided on the pivot 240, which connects to the latch system behind the door panel and serves a transmission function. Preferably, a rubber ring 320 can be provided on the surface of the lock housing to protect the surface of the lock housing and prevent wear.

[0056] Figure 9 The unlocking process of the sinking crank lock 1000 with an automatic pop-out handle provided in this application embodiment is shown. First, the lock cylinder is turned by the key (as shown in a1 in the figure) to unlock and lift the handle (as shown in a2 in the figure). After the handle pops out, the user can unlock the door latch by turning the handle (as shown in a3 in the figure).

[0057] Figure 10 The locking process of the sinking crank lock 1000 with an automatic pop-out handle provided in this application embodiment is shown. First, the handle is turned back to the initial position (as shown in b1 in the figure). Then, the handle is pressed into the groove of the lock case (as shown in b2 in the figure). The bolt is squeezed back and inserted into the locking groove to lock the handle (as shown in b3 in the figure).

[0058] In summary, the sinking crank lock with automatic pop-out handle provided in this application can lift the handle while unlocking, solving the problem of the handle getting stuck and unable to pop out. Moreover, both the lifting and unlocking actions are generated by the rotation of the lock cylinder, making it simple and convenient for users to operate.

[0059] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A recessed crank lock with an automatically pop-out handle, comprising a lock cylinder (110), a bolt (120), a handle (210), and a lock housing (310), wherein one end of the handle (210) is hinged to the lock housing (310), and the other end of the handle (210) is a movable end (210b), characterized in that: It also includes a transmission component (130), both the transmission component (130) and the locking tongue (120) are connected to the lock cylinder (110) in a transmission manner, and the transmission component (130) is provided with a first lifting structure (131). The lock cylinder (110), lock tongue (120) and transmission component (130) are disposed on the lock shell (310), and the handle (210) is provided with a locking groove (211) and a second lifting structure (212). Alternatively, the lock cylinder (110) and transmission component (130) are disposed on the handle (210), and the lock shell (310) is provided with a locking groove (211) and a second lifting structure (212). When the lock cylinder (110) rotates in the unlocking direction, the bolt (120) leaves the locking groove (211), and the first lifting structure (131) and the second lifting structure (212) move toward each other and come into contact, causing the movable end (210b) of the handle (210) to move away from the lock case (310).

2. The sinking crank lock with an automatically popping handle according to claim 1, characterized in that: The lock cylinder (110), lock tongue (120) and transmission component (130) are all disposed in a fixed block (140). The fixed block (140) is disposed inside the lock housing (310) and located outside the movable end (210b) of the handle (210). The locking groove (211) and the second lifting structure (212) are both disposed on the movable end (210b) of the handle (210).

3. The sinking crank lock with an automatically popping handle according to claim 2, characterized in that: The first lifting structure (131) includes a first protrusion (131a) disposed on the upper surface of the transmission member (130), the first protrusion (131a) having a first inclined contact surface (131b), and the second lifting structure (212) includes a second protrusion (212a) disposed on the lower surface of the movable end (210b) of the handle (210), the second protrusion (212a) having a second inclined contact surface (212b), the second inclined contact surface (212b) being inclined in the opposite direction and at the same angle as the first inclined contact surface (131b).

4. The sinking crank lock with an automatically popping handle according to claim 3, characterized in that: A movable space is formed between the lower surface of the movable end (210b) of the handle (210) and the lock housing (310). In the locked state, the first lifting structure (131) of the transmission member (130) is located in the movable space.

5. The sinking crank lock with an automatically popping handle according to claim 4, characterized in that: In the locked state, a first distance is provided between the first lifting structure (131) and the second lifting structure (212), and the length of the first distance is at least enough to ensure that the locking tongue (120) has left the locking groove (211) before the first inclined contact surface (131b) and the second inclined contact surface (212b) come into contact.

6. The sinking crank lock with an automatically pop-out handle according to claim 5, characterized in that: The transmission component (130) is sleeved on the lower end of the lock cylinder (110). The transmission component (130) is provided with a cam structure (132), and the lock tongue (120) is provided with a mating groove (121). The mating groove (121) abuts against the outside of the cam structure (132) of the transmission component (130). When the lock tongue (120) drives the transmission component (130) to rotate, the cam structure (132) pushes the lock tongue (120) to make linear motion.

7. The sinking crank lock with an automatically popping handle according to claim 6, characterized in that: The latch (120) has a waist-shaped hole (122) along its direction of movement, and the lock cylinder (110) passes through the waist-shaped hole (122).

8. The sinking crank lock with an automatically popping handle according to claim 6, characterized in that: A spring fixing part (123) is provided on the side of the latch (120) away from the handle (210), and a return spring (150) is provided between the spring fixing part (123) and the fixing block (140).

9. The sinking crank lock with an automatically popping handle according to claim 1, characterized in that: The hinge end (210a) of the handle (210) is connected to a rotating shaft (240) via a pin (220). The rotating shaft (240) passes through the lock housing (310) and is limited by a nut (280). A torsion spring is sleeved on the pin (220). One end of the torsion spring is inserted into the rotating shaft (240), and the other end of the torsion spring abuts against the lower surface of the handle (210).

10. The sinking crank lock with an automatically popping handle according to claim 9, characterized in that: A limiting member (260) is sleeved on the rotating shaft (240). The limiting member (260) is located on the back of the lock housing (310). The limiting member (260) has outwardly extending limiting arms (261) connected on both sides. The back of the lock housing (310) is also provided with a limiting structure. The rotation range of the limiting arm (261) is limited between the limiting structures.

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