Multi-point locking mechanism, door lock, and door lock suitable for wide cabinet doors

Abstract

This utility model relates to a locking mechanism for a multi-point lock, a door lock, and a door lock suitable for wide cabinet doors. The locking mechanism includes a locking base, a steel bolt, a drive shaft component, and a shaft drive assembly. The drive shaft component is rotatably mounted on the locking base. The shaft drive assembly includes a driven member mounted on the input shaft of the drive shaft component and an active member located to the side of the drive shaft component and sliding linearly. The driven member is a rocker arm, which includes a mounting portion fixed to the input shaft. The mounting portion is connected to a rocker arm extension extending radially along the input shaft. The active member has a drive connection end connected to the rocker arm extension, which is movable relative to the rocker arm extension along the length of the rocker arm extension. It has the advantages of high transmission efficiency and labor-saving operation.

Description

Technical Field

[0001] This utility model relates to the locking mechanism of a multi-point lock and a door lock. Background Technology

[0002] An existing door lock system employs a multi-point locking design to meet reliable locking requirements. It typically includes a main lock, which connects multiple locking point mechanisms via a transmission rod. To ensure stable and reliable operation of the transmission rod, existing multi-point locks preferentially use a linear sliding mechanism confined to the door panel. To achieve the push-pull action of the transmission rod to drive the rotation of the bolts in the locking point mechanism, a rack is connected to the transmission rod. A gear is installed on the input shaft of the drive shaft component in the locking point mechanism. The rack is confined to slide on the locking point base of the locking point mechanism. The gear and rack mesh, the transmission rod drives the rack to slide, which in turn drives the gear to rotate. The gear drives the input shaft to rotate, ultimately driving the bolts in the locking point mechanism to complete the locking and unlocking action (such as the technical solution disclosed in patent number 202221801859.9). However, the gear and rack drive method suffers from low transmission efficiency and requires a large operating force for the locking and unlocking action. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the existing technology and provide a locking mechanism for a multi-point lock with high transmission efficiency and easy operation.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A locking mechanism for a multi-point lock includes a locking base, a steel bolt, a drive shaft component, and a shaft drive assembly. The drive shaft component is rotatably mounted on the locking base. The shaft drive assembly includes a driven member mounted on the input shaft of the drive shaft component and an active member located on the side of the drive shaft component and sliding linearly. The driven member is a rocker arm, which includes a mounting portion fixed on the input shaft. The mounting portion is connected to a rocker arm extending radially along the input shaft. The active member has a drive connection end connected to the rocker arm, which is movable relative to the rocker arm along the length of the rocker arm.

[0006] Preferably, the rocker arm has an elongated connecting hole extending along the length of the rocker arm, the drive connecting end is inserted into the elongated connecting hole and forms a push-fit with the rocker arm, and the drive connecting end can slide along the elongated connecting hole.

[0007] Preferably, one end of the locking base has a mounting plate, the mounting plate has a rocker arm cavity for accommodating the rocker arm, the bottom of the rocker arm cavity has a strip-shaped slot for communicating with the outside, and the drive connection end passes through the strip-shaped slot and is connected to the rocker arm.

[0008] Preferably, the drive connection end is guided by the strip-shaped slot.

[0009] Preferably, the bottom of the mounting plate has a positioning boss corresponding to the opening of the strip-shaped slot. The positioning boss has positioning guide walls located on both sides of the width direction of the strip-shaped slot and extending along the strip-shaped slot, and positioning recesses located at both ends of the length direction of the strip-shaped slot. The driving component includes a columnar rod with a flat part in the middle. The driving connection end is a lever fixed on the flat part. The rod is positioned and fitted in the positioning recess, and the flat part is positioned and fitted with the positioning guide wall.

[0010] By adopting the above technical solution, the active component pulls the rocker arm to swing, thereby driving the input shaft of the drive shaft component to rotate; the transmission efficiency at the locking point is high, and the driving force required to drive the bolt to open and close is smaller, making the operation of the door lock less strenuous.

[0011] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the locking mechanism of the multi-point lock of this utility model. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the locking mechanism of the multi-point lock of this utility model. Figure 2 ;

[0014] Figure 3 This is an exploded view of the locking mechanism of the multi-point lock of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the locking point base of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of a door lock according to the present invention;

[0017] Figure 6 This is a schematic diagram of another type of door lock according to the present invention. Detailed Implementation

[0018] See appendix Figures 1-4The present invention discloses a locking mechanism 1 for a multi-point lock, comprising a locking base 11, a steel bolt 12, a drive shaft component 13, and a shaft drive assembly. The drive shaft component 13 is rotatably mounted on the locking base 11. The shaft drive assembly includes a driven member mounted on an input shaft 131 of the drive shaft component 13 and an active member 15 disposed on the side of the drive shaft component 13 and sliding linearly. The active member 15 moves with the transmission rod of the multi-point lock. The driven member is a rocker arm, and the rocker arm 14 includes components fixed to the input shaft 131. Mounting part 141, as a common and easy-to-assemble structural form, adopts a collar with a square hole. A square shaft body is provided on the input shaft 131, and the square hole of mounting part 141 is fitted onto the square shaft body. Mounting part 141 is connected to rocker arm 142 extending radially along the input shaft 131. The driving member 15 has a driving connection end 151 connected to the rocker arm 142. The driving connection end 151 can move relative to the rocker arm 142 along the length direction of the rocker arm 142. When the driving member 15 slides driven by the transmission rod, it pushes the rocker arm to swing, and the rocker arm in turn drives the input shaft 131 to rotate, thereby completing the opening and closing action of the bolt 12. When the driving member 15 drives the rocker arm 142 to swing, the driving connection end 151 of the driving member 15 slides on the rocker arm 142 to adapt to the change in the relative position of the driving connection end 151 on the rocker arm 142 when the sliding motion of the driving member 15 is converted into the swing of the rocker arm 142.

[0019] As a simple, compact, and reliable mating solution, the rocker arm 142 is provided with an elongated connecting hole 1421 extending along the length direction of the rocker arm 142. The drive connecting end 151 is inserted into the elongated connecting hole 1421 and forms a pushing engagement with the rocker arm 142. The drive connecting end 151 can slide along the elongated connecting hole 1421. Of course, under the guidance of those skilled in the art, the connection structure between the drive connecting end and the rocker arm can also adopt other forms, such as using a fork as the drive connecting end, with the rocker arm placed in the fork; or using a sliding block on the rocker arm for the drive connecting end to connect, etc.

[0020] Typically, a mounting plate 111 is provided at one end of the locking base 11, which is used to mount the locking mechanism 1 on the door panel. In one embodiment of this invention, the mounting plate 111 has a rocker arm cavity 110 for accommodating the rocker arm 14. A strip-shaped slot 112 communicating with the outside is formed at the bottom of the rocker arm cavity 110. The drive connection end 151 passes through the strip-shaped slot 112 and connects to the rocker arm 142. With this structural design, the assembly position of the active component is moved to the bottom of the mounting plate. Compared to the active component being positioned on the side of the mounting plate facing the door panel, this makes the overall structure of the locking mechanism more compact and facilitates connection between the active component and the transmission rod of the multi-point lock. In a simpler form, the drive connection end is directly formed on the transmission rod of the multi-point lock, with the transmission rod serving as the active component driving the rocker arm to swing.

[0021] With the design of the slotted hole, the sliding guide of the active component is realized according to the slotted hole to ensure reliable operation of the active component. For example, the drive connection end 151 is guided and engaged with the slotted hole 112. Or / and adopt: the bottom of the mounting plate 111 has a positioning boss 113 corresponding to the opening of the slotted hole 112. The positioning boss 113 has positioning guide walls 1131 located on both sides of the width direction of the slotted hole 112 and extending along the slotted hole 112, and positioning recesses 1132 located at both ends of the length direction of the slotted hole 112. The active component 15 includes a columnar rod 152 with a flat part 1521 in the middle. The drive connection end 151 is a lever fixed on the flat part 1521. The rod 152 is positioned and engaged in the positioning recess 1132, and the flat part 1521 is positioned and engaged with the positioning guide wall 1131. The active component is slidably guided on the locking base, making its operation more stable and reliable, and its structure more compact.

[0022] The locking mechanism disclosed in this utility model uses a rocker arm to drive the drive shaft component to rotate, which has the advantage of high transmission efficiency. Furthermore, the rocker arm acts as a force-saving lever, reducing the driving force required for locking operations and making multi-point locking operations more effortless. In further optimized designs, the overall structure of the locking mechanism is simpler and more compact, and assembly is also simpler and more convenient.

[0023] like Figure 5As shown, as a specific application of the locking mechanism in a door lock, the door lock is a top-and-bottom lock. The door lock includes a main lock 2, a transmission rod 3 connected to the connecting rod of the main lock 2, and at least one locking mechanism 1 on the transmission rod 3. Typically, a top-and-bottom rod 41 is connected to the end of the transmission rod 3. The top-and-bottom rod 41 passes through a rod guide 42 mounted on the door panel. Rollers are provided at the ends of the top-and-bottom rod 41. An L-shaped pressing member 43 is provided on the door panel. The pressing plate 431 of the pressing member 43 has a sloping guide plate 432 that curves towards one side of the door panel. The roller enters the pressing plate 431 of the pressing member 43 along the sloping guide plate 432, thus pressing the door panel. This door lock uses the above-described... Figures 1-4 The specific structure of the locking mechanism 1 in the illustrated embodiment has been described in detail in the above embodiments and will not be repeated here. As a specific application, based on the locking mechanism 1 using an active rod 15 arranged on the back side of the mounting plate 111, the transmission rod 3 of the door lock directly drives the rocker arm 14, meaning the transmission rod 3 also acts as the active component, achieving a simpler and more compact design for the door lock. In this specific embodiment, a flat section 1521 is formed in the middle of the transmission rod 3, and the drive connection end 151 is a lever fixed to the flat section 151. The transmission rod 3 is positioned within the positioning recess 1132, and the flat section 151 is positioned with the positioning guide wall 1131.

[0024] like Figure 6 As shown, this is a specific application of the locking mechanism in a door lock, a multi-point lock suitable for wide cabinet doors. The door lock includes a main lock 2, a transmission rod assembly, and a locking mechanism 1. The transmission rod assembly includes a longitudinal transmission rod 31, a transverse transmission rod 32, and a corner mechanism 33. One end of the longitudinal transmission rod 31 is connected to the connecting rod of the main lock 2, and the other end of the longitudinal transmission rod 31 is connected to the transverse transmission rod 32 via the corner mechanism 33. Locking mechanisms 1 are connected in series on both the longitudinal transmission rod 31 and the transverse transmission rod 32. This door lock uses the aforementioned... Figures 1-4 The specific structure of the locking mechanism in the illustrated embodiment has been described in detail in the above embodiments and will not be repeated here. As a specific application, based on the design where the locking mechanism uses an active rod 15 arranged on the back side of the mounting plate 111 of the locking base 11, the longitudinal transmission rod 31 and the transverse transmission rod 32 of the door lock directly drive the rocker arm 14 of the corresponding locking mechanism 1. That is, the longitudinal transmission rod 31 and the transverse transmission rod 32 simultaneously act as active components 15, achieving a simpler and more compact design for the door lock. In this specific embodiment, both the longitudinal transmission rod 31 and the transverse transmission rod 32 have a flat portion 1521 formed in the middle. The driving connection end 151 is a lever fixed on the flat portion 1521. The longitudinal transmission rod 31 and the transverse transmission rod 32 are positioned and fitted within the positioning recess 1132 of the corresponding locking mechanism 1, and the flat portion 1521 is positioned and fitted with the positioning guide wall 1131.

[0025] Meanwhile, in this door lock solution, a novel corner mechanism design is adopted to better adapt to the application of the locking mechanism of this utility model. Specifically, the active component 15 of the locking mechanism 1 moves in a linear sliding manner. The corner mechanism design ensures that the longitudinal transmission rod 31 and the transverse transmission rod 32 also move in a linear sliding manner, thus achieving a simple and reliable overall door lock structure. Specifically, the corner mechanism 33 includes an L-shaped mounting box 331. The L-shape of the mounting box 331 better adapts to the compact installation arrangement at the corner position of the door panel, allowing it to avoid other structures on the door panel. The mounting box 331 has an arc-shaped track 3311 corresponding to the corner position of the L-shaped contour of the mounting box 331. That is, the shape contour of the mounting box is fully utilized to design the arc-shaped track, achieving a compact overall structure. The arc-shaped track 3311 can be grooved or convex. For simplicity and convenience, the curved track is preferably designed with a groove shape. An arc-shaped semi-gear ring 332 is mounted on the arc-shaped track 3311 and slides within the mounting box 331, guided by the track. The arc-shaped semi-gear ring 332 simultaneously engages with an active push-pull gear 333 and a driven push-pull gear 334. The active and driven push-pull gears 333 and 334 are arranged perpendicularly. The active push-pull gear 333 is connected to the longitudinal transmission rod 31, and the driven push-pull gear 334 is connected to the transverse transmission rod 32. The main lock drives the longitudinal transmission rod 31 to slide, which in turn pulls the active push-pull gear 333 to slide, thereby driving the arc-shaped semi-gear ring 332 to slide under the guidance of the arc-shaped track 3311, forming a rotation around a center. The driven push-pull gear 334, engaged with the arc-shaped semi-gear ring 332, is driven to slide, which in turn drives the transverse transmission rod 32 to slide, causing the locking mechanism on the transverse transmission rod to synchronously complete the locking and unlocking actions. This corner gear has the advantages of simple and compact structure and stable and reliable transmission.

Claims

1. A locking mechanism for a multi-point lock, comprising a locking base, a bolt, a drive shaft component, and a shaft drive assembly, wherein the drive shaft component is rotatably mounted on the locking base, and the shaft drive assembly includes a driven member mounted on the input shaft of the drive shaft component and an active member disposed on the side of the drive shaft component and sliding linearly, characterized in that: The driven member is a rocker arm, which includes a mounting part fixed on the input shaft. The mounting part is connected to a rocker arm rod extending radially along the input shaft. The driving member has a drive connection end connected to the rocker arm rod, which can move relative to the rocker arm rod along the length direction of the rocker arm rod.

2. The locking mechanism of the multi-point lock according to claim 1, characterized in that: The rocker arm has an elongated connecting hole extending along the length of the rocker arm. The drive connecting end is inserted into the elongated connecting hole and forms a push-fit with the rocker arm. The drive connecting end can slide along the elongated connecting hole.

3. The locking mechanism of the multi-point lock according to claim 1, characterized in that: The locking base has a mounting plate at one end, and the mounting plate has a rocker arm cavity to accommodate the rocker arm. The bottom of the rocker arm cavity has a strip-shaped slot for communication with the outside. The drive connection end passes through the strip-shaped slot and is connected to the rocker arm.

4. The locking mechanism of the multi-point lock according to claim 3, characterized in that: The drive connection end is guided by the strip-shaped slot.

5. The locking mechanism of the multi-point lock according to claim 3, characterized in that: The bottom of the mounting plate has a positioning boss corresponding to the slot opening. The positioning boss has positioning guide walls located on both sides of the slot width direction and extending along the slot, and positioning recesses located at both ends of the slot length direction. The driving component includes a columnar rod with a flat part in the middle. The driving connection end is a lever fixed on the flat part. The rod is positioned and fitted in the positioning recess, and the flat part is positioned and fitted with the positioning guide wall.

6. A door lock, comprising a main lock, a transmission rod connected to a connecting rod of the main lock, and at least one locking point mechanism on the transmission rod, characterized in that: The locking mechanism is the locking mechanism described in any one of claims 1 to 5 above.

7. A door lock, comprising a main lock, a transmission rod connected to a connecting rod of the main lock, and at least one locking point mechanism on the transmission rod, characterized in that: The locking mechanism is the locking mechanism described in any one of claims 3 to 5, and the transmission rod is provided with the drive connection end connected to the rocker arm, thereby constituting the active component.

8. A door lock suitable for wide cabinet doors, comprising a main lock, a transmission rod assembly, and a locking point mechanism, wherein the transmission rod assembly includes a longitudinal transmission rod, a transverse transmission rod, and a corner mechanism; one end of the longitudinal transmission rod is connected to the connecting rod of the main lock, and the other end of the longitudinal transmission rod is connected to the transverse transmission rod via the corner mechanism; a locking point mechanism is connected in series on both the longitudinal and transverse transmission rods, characterized in that: The locking mechanism is the locking mechanism described in any one of claims 1 to 5 above.

9. A door lock suitable for wide cabinet doors, comprising a main lock, a transmission rod assembly, and a locking point mechanism, wherein the transmission rod assembly includes a longitudinal transmission rod, a transverse transmission rod, and a corner mechanism; one end of the longitudinal transmission rod is connected to the connecting rod of the main lock, and the other end of the longitudinal transmission rod is connected to the transverse transmission rod via the corner mechanism; a locking point mechanism is connected in series on both the longitudinal and transverse transmission rods, characterized in that: The locking mechanism is the locking mechanism described in any one of claims 3 to 5, and both the longitudinal transmission rod and the transverse transmission rod are provided with the drive connection end connected to the rocker arm, thereby constituting the active component driving the corresponding locking mechanism.

10. The door lock for wide cabinet doors according to claim 8 or 9, characterized in that: The corner device includes an L-shaped mounting box with an arc-shaped track corresponding to the corner position of the L-shaped profile of the mounting box. An arc-shaped semi-tooth ring is mounted on the arc-shaped track and slides in the mounting box under the guidance of the arc-shaped track. The arc-shaped semi-tooth ring simultaneously engages with an active push-pull toothed rod and a driven push-pull toothed rod. The active push-pull toothed rod and the driven push-pull toothed rod are arranged vertically. The active push-pull toothed rod is connected to the longitudinal transmission rod, and the driven push-pull toothed rod is connected to the transverse transmission rod.

Images