Flat lock

Abstract

This invention relates to a planar lock, comprising a lock base, a handle, and a lock cylinder assembly. The lock base has a handle groove, and the tail end of the handle is locked via the lock cylinder assembly. The lock cylinder assembly includes a lock cylinder component located near the tail end of the handle, and a latch portion located on the lock base and engaging with the lock cylinder component for locking / unlocking. The key feature is that a handle handle is pivotally mounted at the tail end of the handle. One end of the handle handle can swing around the pivot point to present a closed state (engaged on the handle) and an open state (raised off the handle). The handle handle is connected to an opening / closing control mechanism. The lock cylinder of the lock cylinder assembly serves as the operating end of the opening / closing control mechanism, which operates to switch the handle handle between the closed and open states. When the lock cylinder assembly and latch portion are unlocked, the handle handle is in the open state; when the lock cylinder assembly and latch portion are locked, the handle handle is in the closed state. This lock offers advantages such as a neat and aesthetically pleasing appearance, good anti-pry performance, and lock status indication.

Description

Technical Field

[0001] This invention relates to locks. Background Technology

[0002] A flat lock includes a lock base with a handle slot. One end of the handle is pivotally mounted in the handle slot, and the other end can be engaged with and ejected from the handle slot. The handle is equipped with a spring mechanism to automatically eject the handle from the handle slot. Some locks also have a lifting handle at the end of the handle, allowing manual pulling of the handle out of the handle slot in case of a handle ejection malfunction (e.g., in an icy environment). However, existing lifting handle structures often have a tail extending from the handle's end to the outer edge of the lock base, with a recessed design on the bottom side of the tail (as disclosed in patent documents such as CN202020999190.3 and CN202021189380.5). In case of a handle ejection malfunction, the tail can be pinched and the handle pulled. However, the existing design, with its extended handle end, is aesthetically unappealing. Furthermore, the recessed end of the handle, extending to the edge of the lock base, provides ample space for tools to insert, making it easy to pry the handle and resulting in insufficient anti-pry performance. Additionally, the existing locks do not provide a clear indication of the locked state, meaning that operators may leave the equipment unlocked after maintenance. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a planar lock that achieves a neat and aesthetically pleasing appearance, improves the lock's anti-pry performance, and provides a lock status indication function.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A planar lock includes a lock base, a handle, and a lock cylinder assembly. The lock base has a handle slot for receiving the handle. One end of the handle is pivotally mounted in the handle slot of the lock base, and the other end of the handle is a tail end that can be engaged / disengaged from the handle slot. The tail end of the handle is locked by the lock cylinder assembly. The lock cylinder assembly includes a lock cylinder component located near the tail end of the handle, and a latch portion located on the lock base and engaged with the lock cylinder component for locking / unlocking. The handle is characterized in that: a handle handle is pivotally mounted at the tail end of the handle. One end of the handle handle can swing around the pivot to present a closed state engaged on the handle and an open state tilted off the handle. The handle handle is connected to an opening / closing control mechanism. The lock cylinder of the lock cylinder assembly is the operating end of the opening / closing control mechanism. Operating the lock cylinder drives the handle handle to switch between the closed and open states. When the lock cylinder assembly and the latch portion are unlocked, the handle handle is in the open state; when the lock cylinder assembly and the latch portion are locked, the handle handle is in the closed state.

[0005] Preferably, the opening and closing control mechanism includes an elastic element and a handle locking component. The handle locking component is movably configured on the handle and linked to the lock cylinder. A locking protrusion is provided on the pivot part of the handle. The handle locking component pushes against the locking protrusion to drive the handle to rotate from the open state to the closed state. The locking protrusion on the handle is restricted to the closed state under the pressure of the handle locking component. The elastic element stores energy under the drive of the handle. Driven by the stored energy of the elastic element, the handle swings from the closed state to the open state.

[0006] Preferably, the pivoting direction of the handle corresponds to the length direction of the handle, and the end of the handle facing the tail end of the handle is a liftable end that can be tilted up from the handle.

[0007] Preferably, the pivoting part of the handle includes pivot seats distributed on both sides of the handle, with a positioning gap between the two pivot seats, a locking protrusion on the pivot seat, a handle mounting part on the top surface of the handle, the handle mounting part being inserted into the positioning gap, the pivot seat and the handle mounting part being connected by a pivot, and the elastic element being a torsion spring fitted on the pivot.

[0008] Preferably, the handle locking component is linearly slidably fitted on the lock base. The handle locking component slides in the direction corresponding to the pivoting direction of the handle. The handle locking component includes an L-shaped body that is positioned and slidably fitted on the handle. The L-shaped body has a lock cylinder connecting block corresponding to the bottom end of the lock cylinder. A longitudinal driving block extends along the height direction of the lock cylinder on the lock cylinder connecting block. The top of the longitudinal driving block is provided with a pushing part that pushes the locking protrusion. The bottom end of the lock cylinder is provided with an eccentric driving part that rotates with the lock cylinder. The eccentric driving part is connected to the lock cylinder connecting block. The handle locking component reciprocates under the drive of the eccentric driving part.

[0009] Preferably, the lock cylinder connecting block extends with a latch, which engages with the latch portion for locking / unlocking.

[0010] Preferably, the pusher has positioning wing plates on both sides in the lateral direction, and the handle has a positioning groove that slides and engages with the positioning wing plates.

[0011] Preferably, a flexible locking assembly for the handle is installed on the longitudinal drive block. The flexible locking assembly for the handle includes a locking pin and a locking pin spring. The locking pin has a spherical locking head. The handle groove is provided with a locking recess that engages with the spherical locking head for locking / unlocking. The locking / unlocking of the spherical locking head and the locking recess is achieved by operating the handle.

[0012] Preferably, when the handle is snapped into the handle slot, the bottom surface of the closed handle handle is at least against the handle, and it is placed into the handle slot along with the handle, with the edge of the handle handle handle corresponding to the inner wall of the handle slot being close to the inner peripheral side wall of the handle slot.

[0013] Preferably, the top surface of the handle is provided with a handle mounting recess, and the handle is installed in the handle mounting recess.

[0014] The planar lock of this invention features a flip-up handle at the end of the handle. After the lock is unlocked by the lock cylinder, the handle tilts up at a certain angle. In case of a malfunction in the handle's pop-up action or other issues, the handle can be pinched and pulled to pull the handle out of its slot. The handle pivots at the end of the handle. After the handle is engaged in the slot and locked by the lock cylinder, the handle is secured to the handle, resulting in a neater and more aesthetically pleasing appearance when the lock is locked. Furthermore, the end of the handle no longer extends beyond the slot to the edge of the lock body, improving the lock's anti-pry performance. The locking and unlocking operations of the lock cylinder are accompanied by changes in the handle's position, allowing the handle to indicate the lock's status and providing operators with a more intuitive understanding of the lock's condition.

[0015] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a diagram showing the locked state of the planar lock of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure under the current conditions; Figure 3 This is a diagram showing the unlocking state of the planar lock of the present invention; Figure 4 for Figure 3 A schematic diagram of the structure under the current conditions; Figure 5 This is an exploded view of the structure of the tail end portion of the handle of the present invention; Figure 6 This is a schematic diagram of the structure of the tail end of the handle of the present invention; Figure 7 This is a transmission path diagram of the handle in the open state of the present invention; Figure 8 This is a transmission path diagram of the handle of the present invention in the closed state.

[0017] Lock base 1, handle groove 11, inner peripheral side wall 111, locking recess 112, handle 2, tail end 21, handle mounting recess 211, handle mounting part 212, stop surface 2121, positioning hole cavity 23, positioning groove 24, bolt assembly 3, lock cylinder assembly 41, lock cylinder 411, bolt tongue 412, eccentric drive part 413, latch part 42, handle handle 5, lifting end 50, edge 51, locking protrusion 52, pivot seat 53, positioning interval 54, elastic element 61, handle locking part 62, lock cylinder connecting block 621, pry hole 6211, longitudinal drive block 622, pushing part 623, positioning wing plate 6231, locking pin 71, spherical locking head 711, locking pin spring 72 Detailed Implementation

[0018] See appendix Figures 1-8 This invention discloses a planar lock, comprising a lock base 1, a handle 2, and a lock cylinder assembly. The lock base 1 has a handle groove 11 for receiving the handle 2. One end of the handle 2 is pivotally mounted in the handle groove 11 of the lock base 1 via a bolt assembly 3. The other end of the handle 2 is a tail end 21 that can be engaged / disengaged from the handle groove 11. The tail end 21 of the handle 2 is locked by the lock cylinder assembly. The lock cylinder assembly includes a lock cylinder component 41 disposed near the tail end 21 of the handle 2, and a latch 42 disposed on the lock base 1 and engaged with the lock cylinder component 41 for locking / unlocking. The latch 42 is a boss disposed on the lock base 1. The lock cylinder assembly 41 includes a lock cylinder 411 and a bolt 412. The rotation of the lock cylinder 411 is controlled by... The driving bolt 412 extends into and out of the boss position to achieve locking and unlocking. Existing locks have two designs: one uses a handle extending from the tail end to form a handle handle, which has insufficient anti-pry performance; the other has a handle without a handle, which makes opening the handle inconvenient when it cannot be extended. To address the shortcomings of existing locks on the market, the following optimized design is adopted, which not only solves the handle opening operation problem but also solves the problem of the lock status not being visually visible, leading to false locking (not fully locked). Specifically, the handle 2 has a pivotally mounted handle 5 at its tail end. One end of the handle 5 can swing around the pivot point to present a closed state fastened to the handle 2 (e.g., ...). Figure 1 , Figure 2 and Figure 8 (as shown) and the open state where the handle 2 is tilted up (as shown) Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown), the handle 5 is connected to an opening and closing control mechanism. The lock cylinder 411 of the lock cylinder assembly 41 is the operating end of the opening and closing control mechanism. Operating the lock cylinder 411 drives the handle 5 to switch between a closed state and an open state. When the lock cylinder assembly 41 is unlocked from the latch 42, the handle 5 is in the open state (see...). Figure 4When the lock cylinder assembly 41 and the latch part 42 are locked, the handle 5 is in the closed state (see...). Figure 2 When the lock cylinder is turned to unlock the handle, the end of the handle controlled by the lock cylinder is raised, indicating an open state. The angle of this rise can be set as needed. If the handle fails to spring out of the handle slot, the handle handle 5 can be pinched to pull the handle 2 out of the handle slot 11. At the same time, the handle handle indicates the unlocked state of the handle. When the lock cylinder is turned to lock the handle, the end of the handle controlled by the lock cylinder is locked onto the handle, indicating a closed state. This achieves a hidden design of the handle handle on the handle, rather than a protruding design at the end, making the lock neat and aesthetically pleasing. At the same time, the handle handle indicates the locked state of the handle. This design achieves better results for locks with a temporary locking function, i.e., locks with a temporary lock structure, such as those described in application numbers CN202310437653.5 or CN201920571990.2. To further improve anti-pry performance, when the handle 2 is engaged in the handle groove 11, the bottom surface of the closed handle handle 5 should be against the handle 2 and placed into the handle groove 11 along with the handle 2. The edge 51 of the handle handle 5 corresponding to the inner wall of the handle groove 11 should be close to the inner circumferential side wall 111 of the handle groove 11. In this way, the mating surface of the handle handle is placed in the handle groove, reducing the need for tools to be inserted under the handle handle for prying operations, thereby improving anti-pry performance. To make the handle snap onto the handle after installation, the lock is neater and more aesthetically pleasing, and to achieve a better concealed design of the handle, the top surface of the handle 2 is provided with a handle mounting recess 211, and the handle 5 is installed in the handle mounting recess 211.

[0019] In one embodiment of the present invention, the opening and closing control mechanism includes an elastic element 61 and a handle locking member 62. The handle locking member 62 is movably disposed on the handle 2 and linked to the lock cylinder 411. A locking protrusion 52 is provided on the pivot part of the handle 5. The handle locking member 62 pushes against the locking protrusion 52, thereby driving the handle 5 to rotate from the open state to the closed state (e.g., ...). Figure 7 The state to Figure 8 (the state), and the locking protrusion 52 on the handle 5 is restricted to the closed state under the pressure of the handle locking member 62 (see Figure 8 ), and complete the energy storage of the elastic element 61 under the drive of the handle 5, and the handle 5 swings from the closed state to the open state under the drive of the stored energy of the elastic element 61 (e.g. Figure 8 The state to Figure 7(State). During the locking process of the lock cylinder, the handle locking member 62 presses against the locking protrusion 52 on the handle handle 5, causing the handle handle 5 to rotate. The handle handle 5 overcomes the elastic force of the elastic element 61 until it is closed. In the closed state, the locking protrusion 52 on the handle handle 5 is stopped by the pressing of the handle locking member 62, that is, the lock cylinder 411 reliably locks the handle handle 5, and the handle handle cannot be easily opened. When the lock cylinder rotates to the unlocked state, the handle handle 5 tilts up and opens to a certain angle under the drive of the stored elastic force in front of the elastic element 61, making the linkage between the handle handle 5 and the lock cylinder 411 simpler and more reliable. Of course, under the guidance of this invention, the rotation of the lock cylinder can be used to control the swing of the handle handle. The closing control mechanism can also adopt other structural designs, such as a traction arm hinged to the lock cylinder and the handle handle respectively, with one end of the traction plate eccentrically hinged to the lock cylinder and the other end of the traction arm hinged to the handle handle; or the handle handle can be equipped with an elastic element, the stored capacity of which is used to drive the handle handle to close, the lock cylinder is equipped with a cam, the cam pushes a sliding push plate, and the handle handle is equipped with a push part for pushing, the sliding push plate pushes the push part, causing the handle handle to swing to the open state; or the lock cylinder is equipped with a drive sleeve that rotates with the lock cylinder, the drive sleeve has a spiral drive groove set along the height direction of the lock cylinder, and the handle handle is equipped with a toggle finger that inserts into the spiral drive groove, so that the handle handle swings under the guidance of the spiral drive groove; and so on. However, the opening and closing control mechanism design of this invention has the advantages of simple structure, easy installation and arrangement, and reliable operation of the handle handle.

[0020] The handle 5 is arranged along the length of the handle 2. Specifically, the pivot direction of the handle 5 corresponds to the length direction of the handle 2, and the end of the handle 5 facing the tail end 21 of the handle 2 is a liftable end 50 that can be tilted up from the handle 2. This arrangement makes the installation and operation of the handle more convenient.

[0021] The elastic element 61 is preferably a torsion spring. Other forms of elastic element are also possible, such as a coil spring. Since the handle is pivotal and the installation space is limited, a torsion spring is more suitable for installation. The pivoting part of the handle 5 includes pivot seats 53 distributed on both sides of the handle 5 laterally. A positioning gap 54 is formed between the two pivot seats 53. Locking protrusions 52 are provided on the pivot seats 53. A handle mounting part 212 is provided on the top surface of the handle 2. The handle mounting part 212 is inserted into the positioning gap 54. The pivot seats 53 and the handle mounting part 2 are connected by a pivot. The elastic element 61 is a torsion spring fitted on the pivot. With this design, two locking protrusions 52 are formed on both sides of the handle 2 laterally, reliably limiting the open state of the handle. The handle's limit position in the open state is limited by a stop surface 2121 formed on the handle 2. The pivot seat 53 on the handle 5 engages with the stop surface 2121 to provide a reliable stop for the handle, ensuring a reliable support point for the handle's lifting operation. Alternatively, the handle's position in the open state could also be limited by the stop of the handle locking mechanism, but this could cause damage to the locking mechanism under stress; or a locking protrusion could be used for limitation, but this could also cause damage.

[0022] Furthermore, the handle locking member 62 is linearly slidably fitted on the lock base 1. The handle locking member 62 slides in the direction corresponding to the pivoting direction of the handle 5. The handle locking member 62 includes an L-shaped body that is positioned and slidably fitted on the handle 2. The L-shaped body has a lock cylinder connecting block 621 corresponding to the bottom end of the lock cylinder 411. A longitudinal driving block 622 extends along the height direction X of the lock cylinder 411 on the lock cylinder connecting block 621. The top end of the longitudinal driving block 622 is provided with a pushing part 623 of the pushing locking protrusion 52. The bottom end of the lock cylinder 411 is provided with an eccentric driving part 413 that rotates with the lock cylinder 411. The eccentric driving part 413 is connected to the lock cylinder connecting block 621. The handle locking member 62 reciprocates under the drive of the eccentric driving part 413. A positioning cavity 23 is provided on the handle 2, and the lock cylinder connecting block 621 is inserted into the positioning cavity 23. The lock cylinder connecting block 621 is provided with a dial hole 6211, and the eccentric drive part 413 is inserted into the dial hole 6211. When the lock cylinder rotates, the eccentric drive part moves the handle locking member to slide, and the push part on the handle locking member pushes the locking protrusion on the handle handle, so as to push and swing the handle handle to the locked state, or the push part 623 on the handle locking member retracts, and the handle handle swings to the open state under the drive of the stored capacity of the elastic element. The handle locking member realizes the transmission connection from the bottom of the lock cylinder to the part near the top surface of the handle. The structure is simple and compact, and the structure adjustment is simple and easy. Of course, as a feasible solution of the present invention, the handle locking member can also adopt a rotating pressing member with a spiral surface extending along the height direction of the lock cylinder that rotates with the lock cylinder, and the locking protrusion is inserted below the spiral surface for the spiral surface to press; etc.

[0023] Since the handle locking component and the lock cylinder are connected at the bottom of the lock cylinder, a latch 412 can extend from the lock cylinder connecting block 621. The latch 412 engages with the latch portion 42 for locking / unlocking. This allows the handle locking component and the latch to be more easily integrated, resulting in a simple and compact structure.

[0024] To make the sliding of the handle locking part more reliable, the push part 623 is provided with positioning wing plates 6231 on both sides of the lateral side, and the handle 2 has a positioning groove 24 that is positioned and slidably engaged with the positioning wing plate 6231, and the positioning wing plate 6231 is inserted into the positioning groove 24.

[0025] Because the handle has a carrying handle design, it enables a simpler and more convenient flexible locking structure optimization design for the lock. Specifically, a flexible locking assembly is installed on the longitudinal drive block 622. The flexible locking assembly includes a locking pin 71 and a locking pin spring 72. The locking pin 71 is slidably engaged with the longitudinal drive block 622. The longitudinal drive block 622 has a pin hole, and the locking pin 71 is restricted to sliding in the pin hole. The locking pin 71 has a spherical locking head 711. Driven by the locking pin spring 72, the spherical locking head 711 extends out of the pin hole. The handle groove 11 has a locking recess 112 that engages with the spherical locking head 711 for locking / unlocking. The locking / unlocking of the locking head 711 and the locking recess 112 is achieved by operating the handle 2. Specifically, when the handle 2 is engaged in the handle slot 11, the spherical locking head 711 is pressed. Once the handle 2 is fully engaged in the handle slot 11, the spherical locking head 711 of the locking pin 71 engages in the locking recess 112, temporarily locking the handle. Pulling the handle 2 forces the spherical locking head 711 out of the locking recess 112, unlocking the handle. The operation is simple and convenient. Furthermore, the overall structure is simple, and the corresponding temporary locking and unlocking operations are completed by the movement of the handle, making operation simple and convenient. No special operating buttons are required, resulting in a neat and aesthetically pleasing appearance and reduced costs. Moreover, the handle design allows the operator to visually identify whether the lock is truly locked or only temporarily flexibly locked. In a flexibly locked situation, the handle springs up, while in a truly locked situation, the handle closes flat. A flexibly locked situation would allow anyone to open the lock, posing a safety hazard.

Claims

1. A planar lock, comprising a lock base, a handle, and a lock cylinder assembly, wherein the lock base has a handle groove for receiving the handle, one end of the handle is pivotally mounted in the handle groove of the lock base, and the other end of the handle is a tail end that can be engaged / disengaged from the handle groove, the tail end of the handle being locked by the lock cylinder assembly, the lock cylinder assembly comprising a lock cylinder component disposed near the tail end of the handle, and a latch portion disposed on the lock base and engaging with the lock cylinder component for locking / unlocking, characterized in that: The handle is pivotally mounted at the tail end of the handle. One end of the handle can swing around the pivot to present a closed state fastened to the handle and an open state tilted up from the handle. The handle is connected to an opening and closing control mechanism. The lock cylinder of the lock cylinder assembly is the operating end of the opening and closing control mechanism. Operating the lock cylinder drives the handle to switch between the closed and open states. When the lock cylinder assembly and the latch are unlocked, the handle is in the open state. When the lock cylinder assembly and the latch are locked, the handle is in the closed state.

2. The planar lock according to claim 1, characterized in that: The opening and closing control mechanism includes an elastic element and a handle locking component. The handle locking component is movably configured on the handle and linked to the lock cylinder. A locking protrusion is provided on the pivot part of the handle. The handle locking component pushes against the locking protrusion to drive the handle to rotate from the open state to the closed state. The locking protrusion on the handle is restricted to the closed state under the pressure of the handle locking component. The elastic element stores energy under the drive of the handle. Driven by the stored energy of the elastic element, the handle swings from the closed state to the open state.

3. The planar lock according to claim 2, characterized in that: The pivoting direction of the handle corresponds to the length direction of the handle, and the end of the handle facing the tail end of the handle is a liftable end that can be tilted up from the handle.

4. The planar lock according to claim 3, characterized in that: The pivoting part of the handle includes pivot seats distributed on both sides of the handle, with a positioning gap between the two pivot seats. The pivot seats are provided with locking protrusions. The top surface of the handle is provided with a handle mounting part, which is inserted into the positioning gap. The pivot seats and the handle mounting part are connected by a pivot, and the elastic element is a torsion spring fitted on the pivot.

5. The planar lock according to claim 3, characterized in that: The handle locking component is linearly slidably fitted on the lock base. The handle locking component slides in the direction corresponding to the pivoting direction of the handle. The handle locking component includes an L-shaped body that is positioned and slidably fitted on the handle. The L-shaped body has a lock cylinder connecting block corresponding to the bottom end of the lock cylinder. A longitudinal driving block extends along the height direction of the lock cylinder on the lock cylinder connecting block. The top of the longitudinal driving block is provided with a pushing part that pushes the locking protrusion. The bottom end of the lock cylinder is provided with an eccentric driving part that rotates with the lock cylinder. The eccentric driving part is connected to the lock cylinder connecting block. The handle locking component reciprocates under the drive of the eccentric driving part.

6. The planar lock according to claim 5, characterized in that: The lock cylinder connecting block extends with a locking tongue, which engages with the latch to lock / unlock.

7. The planar lock according to claim 5, characterized in that: The pusher is provided with positioning wing plates on both sides of the lateral side, and the handle has a positioning groove that is slidably engaged with the positioning wing plates.

8. The planar lock according to claim 5, characterized in that: A flexible locking assembly for the handle is installed on the longitudinal drive block. The flexible locking assembly for the handle includes a locking pin and a locking pin spring. The locking pin has a spherical locking head. The handle groove is provided with a locking recess that engages with the spherical locking head for locking / unlocking. The locking / unlocking of the spherical locking head and the locking recess is achieved by operating the handle.

9. The planar lock according to claim 1, characterized in that: When the handle is snapped into the handle slot, the bottom surface of the closed handle handle is at least against the handle and is placed into the handle slot along with the handle. The edge of the handle handle that corresponds to the inner wall of the handle slot is close to the inner circumferential side wall of the handle slot.

10. The planar lock according to claim 9, characterized in that: The top surface of the handle is provided with a handle mounting recess, and the handle is installed in the handle mounting recess.

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