Conjoined lock

Abstract

The utility model provides a conjoined lock, and relates to the technical field of mechanical locks, the conjoined lock comprises a main lock body, and the main lock body is provided with an edge connecting plate and a main spring bolt; the main spring bolt is connected with the connecting plate through a handle shifting wheel; the two ends, in the first direction, of the connecting plate are provided with connecting pieces correspondingly. The auxiliary lock body is respectively provided with a linkage plate and an auxiliary lock tongue which can slide relatively, and a driving piece and a limiting piece which can rotate relatively; the limiting piece is connected with the auxiliary lock body through a first rotating shaft. The driving piece is connected with the auxiliary lock body through a second rotating shaft; the sliding direction of the linkage plate is parallel to the first direction; the auxiliary lock tongue is further provided with a clamping tongue. And two limiting bulges are arranged on the clamping tongue. The main lock tongue and the auxiliary lock tongue form linkage through the connecting piece, when the lock is opened, the clamping tongue can limit the auxiliary lock tongue to only extend out a part, and then retraction of the auxiliary lock tongue is not limited; when the door is closed, the clamping tongue is limited by the buckling box and cannot pop out, the auxiliary spring bolt can completely stretch out, the limiting piece can reset, and then self-locking of the auxiliary spring bolt is automatically completed.

Description

Technical Field

[0001] This application relates to the field of mechanical lock technology, specifically to a combination lock. Background Technology

[0002] As people's living standards improve, their requirements for home security and ease of use are becoming increasingly stringent. Against this backdrop, armored doors, as an advanced product of security doors, are gaining popularity among consumers and gradually entering many homes due to their superior security performance and aesthetic design. The widespread application of armored doors has driven the vigorous development of the market for various types of interlocking locks that are compatible with them, and the market size of products such as electronic interlocking locks is showing a steady growth trend.

[0003] However, the types of locks used on armored doors on the market are diverse and of varying quality. Among them, mechanical locks, as a traditional type of lock, have obvious limitations in function. Mechanical locks cannot achieve automatic locking, so in daily life, users need to manually lock the door every time they close it. This not only brings many inconveniences to users, but also makes it easy to forget to lock the door, thus leaving a safety hazard.

[0004] To achieve automatic locking, most existing technologies rely on electronic drive. However, electronically driven locks have problems such as high cost and the need for continuous power supply. Once a power outage or electronic component failure occurs, the lock may not work properly, affecting normal use by the user. In addition, the complex circuit system of electronic locks may also be vulnerable to being hacked, posing certain challenges in terms of security.

[0005] Therefore, how to develop a lock that can meet the requirements of automatic locking while also having high security, low cost and stability has become a key issue that urgently needs to be solved in the field of mechanical lock technology. Utility Model Content

[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a connecting lock.

[0007] This application provides a combination lock, including

[0008] The main lock body is provided with a connecting plate that slides along a first direction and a main lock tongue that slides along a second direction.

[0009] The main locking tongue is connected to the connecting plate via a lever;

[0010] The lever is mounted on the handle and is rotatably connected to the main lock body, and is used to synchronously drive the main lock tongue and the connecting plate;

[0011] The connecting plate is also equipped with connecting pieces at both ends along the first direction for connecting with the secondary lock body;

[0012] The secondary lock body is respectively provided with a sliding linkage plate and a secondary lock tongue, as well as a drive component and a limiting component that can rotate relative to each other;

[0013] The limiting member is connected to the secondary lock body via a first rotating shaft, and is used to restrict the secondary lock tongue from sliding along the second direction;

[0014] The driving component is connected to the secondary lock body via a second rotating shaft, and is used to drive the limiting component to rotate and the secondary lock tongue to slide along the second direction;

[0015] The sliding direction of the linkage plate is parallel to the first direction, and is used to drive the driving component to rotate;

[0016] The secondary lock tongue is also provided with a latch, which is used to form a locking and limiting contact with the secondary lock body;

[0017] The latch has two limiting protrusions, which are used to limit the secondary latch in two stages.

[0018] Furthermore,

[0019] One end of the secondary lock tongue is installed inside the secondary lock body, and the other end can extend to the outside of the secondary lock body;

[0020] The secondary lock body has a matching through hole corresponding to the secondary lock tongue for the secondary lock tongue to pass through.

[0021] Furthermore,

[0022] The secondary locking tongue is provided with a matching mounting groove corresponding to the locking tongue;

[0023] The latch is located in the mounting groove, and one end near the drive member is hinged to the secondary latch;

[0024] The limiting protrusion includes a first protrusion on the side closer to the driving member and a second protrusion on the side farther away from the driving member;

[0025] The second protrusion has two inclined surfaces on either side;

[0026] The side of the first protrusion closest to the second protrusion is a vertical surface, and the side furthest from the second protrusion is an inclined surface.

[0027] Furthermore,

[0028] The secondary lock body is also provided with a return spring corresponding to the secondary lock tongue;

[0029] The reset spring extends along the second direction and is located on the side of the secondary latch away from the latch, and is used to drive the secondary latch to perform self-reset.

[0030] Furthermore,

[0031] A torsion spring is also installed on the second shaft;

[0032] The torsion spring is sleeved on the second rotating shaft and connected to the secondary locking tongue, and is used to drive the secondary locking tongue to perform self-reset.

[0033] Furthermore,

[0034] The drive component is L-shaped, and a matching mounting hole is provided at the corner corresponding to the second rotating shaft;

[0035] One end of the driving component abuts against the linkage plate, and the other end abuts against the limiting component;

[0036] The linkage plate is provided with a driving part for abutting against the driving component;

[0037] The drive unit is vertically mounted on the linkage plate and abuts against the linkage plate from the side.

[0038] Furthermore,

[0039] The limiting member has a beveled edge for abutment corresponding to the driving member;

[0040] The end of the driving component has an arc-shaped structure corresponding to the inclined side, which is used to reduce the friction between it and the limiting component.

[0041] Furthermore,

[0042] The driving component is also provided with an L-shaped notch at one end near the limiting component;

[0043] The secondary locking tongue is provided with a mating part at the notch;

[0044] The mating part is vertically mounted on the secondary locking tongue and is used to abut against the notch.

[0045] The advantages and positive effects of this application are:

[0046] This technical solution uses a connecting plate to link the main latch and the auxiliary latch. When the door is open, the latch restricts the auxiliary latch to extend only partially, preventing the limiter from resetting and thus allowing the auxiliary latch to retract. When the door is closed, the latch enters the latch box on the door frame, preventing it from popping out and allowing the auxiliary latch to extend fully. This also allows the limiter to reset, automatically locking the auxiliary latch. Conversely, when opening the door by rotating the door handle, the connecting plate linked to the main lock can simultaneously drive the limiter and the auxiliary latch, opening the door without any further operation. Attached Figure Description

[0047] Figure 1This is a schematic diagram of the structure of the interlocking lock provided in an embodiment of this application;

[0048] Figure 2 This is a schematic diagram of the main lock body of the interlocking lock provided in an embodiment of this application;

[0049] Figure 3 This is a schematic diagram of the secondary lock body of the interlocking lock provided in an embodiment of this application.

[0050] The text labels in the diagram are as follows: 100-Main lock body; 110-Connecting plate; 120-Main lock tongue; 130-Handle dial; 140-Connecting plate; 200-Secondary lock body; 210-Linking plate; 220-Secondary lock tongue; 221-Latch tongue; 230-Drive component; 240-Limiting component. Detailed Implementation

[0051] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0052] Please refer to Figure 1-3 This embodiment provides a combined lock, including a main lock body 100. The main lock body 100 is provided with a connecting plate 110 that slides along a first direction and a main bolt 120 that slides along a second direction. The main bolt 120 and the connecting plate 110 are connected by a handle wheel 130. The handle wheel 130 is sleeved on the handle and is rotatably connected to the main lock body 100 for synchronously driving the main bolt 120 and the connecting plate 110. The connecting plate 110 is also provided with connecting pieces 140 at both ends along the first direction for connecting with a secondary lock body 200. The secondary lock body 200 is provided with a sliding linkage plate 210 and a secondary bolt 220, as well as a rotatable linkage plate 210. The lock comprises a driving component 230 and a limiting component 240; the limiting component 240 is connected to the secondary lock body 200 via a first rotating shaft and is used to restrict the secondary lock tongue 220 from sliding in the second direction; the driving component 230 is connected to the secondary lock body 200 via a second rotating shaft and is used to drive the limiting component 240 to rotate and the secondary lock tongue 220 to slide in the second direction; the sliding direction of the linkage plate 210 is parallel to the first direction and is used to drive the driving component 230 to rotate; the secondary lock tongue 220 is also provided with a latch 221 for forming a latching limit with the secondary lock body 200; the latch 221 is provided with two limiting protrusions for forming two-level limits on the secondary lock tongue 220.

[0053] In this embodiment, the main bolt 120 is slidably mounted on the main lock body 100 and can be slidably operated via the handle wheel 130; at the same time, the main lock body 100 is also provided with a connecting plate 110 whose sliding direction is perpendicular to the main bolt 120, and the connecting plate 110 can also be slidably operated via the handle wheel 130.

[0054] In this embodiment, connecting plates 140 are respectively installed at both ends of the connecting plate 110 along the sliding direction; the connecting plates 140 can extend to the outside of the main lock body 100 and connect with the secondary lock body 200, so that the secondary lock body 200 and the main lock body 100 can be linked together.

[0055] In this embodiment, a linkage plate 210 is provided on the secondary lock body 200 corresponding to the connecting piece 140; at the same time, a secondary lock tongue 220 is also provided on the secondary lock body 200, the sliding direction of which is perpendicular to the sliding direction of the linkage plate 210; at the same time, the secondary lock tongue 220 is also linked with the linkage plate 210, so that when the door is opened by the handle, the main lock tongue 120 and the secondary lock tongue 220 can be opened simultaneously.

[0056] In this embodiment, the limiting member 240 is rotatably installed in the secondary lock body 200 via the first rotating shaft, and a torsion spring is also sleeved on the first rotating shaft to drive the limiting member 240 to self-reset, thereby restricting the retraction of the secondary lock tongue 220 and forming a self-locking mechanism.

[0057] In this embodiment, the linkage plate 210 and the secondary locking tongue 220 are connected by a driving component 230; at the same time, the driving component 230 is also connected to the limiting component 240. When the linkage plate 210 drives the driving component 230 to unlock the secondary locking tongue 220, the driving component 230 will first drive the limiting component 240 to rotate, and then drive the secondary locking tongue 220 to retract.

[0058] In this embodiment, the latch 221 is rotatably mounted on the secondary latch 220, and has two limiting protrusions on the side away from the secondary latch 220. When the door is open, the secondary latch 220 can only extend partly due to the restriction of the latch 221. At this time, the limiting member 240 cannot be reset, so the secondary latch 220 can retract freely. When the door is closed, the latch 221 is restricted by the latch box and cannot be rotatably mounted, so the secondary latch 220 can be fully extended. However, the limiting member 240 will also be reset, so the secondary latch 220 cannot retract, thus forming a self-locking mechanism.

[0059] In a preferred embodiment, one end of the secondary latch 220 is installed inside the secondary lock body 200, and the other end can extend to the outside of the secondary lock body 200; the secondary lock body 200 is provided with a matching through hole corresponding to the secondary latch 220 for the secondary latch 220 to pass through.

[0060] In this embodiment, a matching through hole is provided on one side of the secondary lock body 200 corresponding to the secondary lock tongue 220. This ensures that the secondary lock tongue 220 can extend to the outside of the secondary lock body 200, and also engages and limits the latch 221, so that the secondary lock tongue 220 can only extend a portion when the door is open.

[0061] In a preferred embodiment, the secondary latch 220 has a matching mounting groove corresponding to the latch 221; the latch 221 is located in the mounting groove, and one end near the drive member 230 is hinged to the secondary latch 220; the limiting protrusion includes a first protrusion near the drive member 230 and a second protrusion away from the drive member 230; the two sides of the second protrusion are inclined surfaces; the side of the first protrusion near the second protrusion is a vertical surface, and the side away from the second protrusion is an inclined surface.

[0062] In this embodiment, both sides of the second protrusion are transitioned by bevels, thereby ensuring that the second protrusion can freely enter and exit the secondary lock body 200; the side of the first protrusion away from the second protrusion is transitioned by bevels, ensuring that its entry into the secondary lock body 200 is not restricted, while the vertical surface of its side close to the second protrusion restricts its extension to the outside of the secondary lock body 200. It can only extend to the outside of the secondary lock body 200 when the door is closed and the latch 221 cannot pop out due to the restriction of the latch box.

[0063] In this embodiment, a spring is also provided in the mounting groove corresponding to the latch 221, which is used to drive the latch 221 to flip to the outside of the mounting groove.

[0064] In a preferred embodiment, the secondary lock body 200 is further provided with a return spring corresponding to the secondary lock tongue 220; the return spring extends along the second direction and is located on the side of the secondary lock tongue 220 away from the latch 221, and is used to drive the secondary lock tongue 220 to perform self-reset.

[0065] In a preferred embodiment, a torsion spring is also installed on the second rotating shaft; the torsion spring is sleeved on the second rotating shaft and connected to the secondary locking tongue 220, and is used to drive the secondary locking tongue 220 to perform self-reset.

[0066] In a preferred embodiment, the driving member 230 is L-shaped, and a matching mounting hole is provided at the corner corresponding to the second rotating shaft; one end of the driving member 230 abuts against the linkage plate 210, and the other end abuts against the limiting member 240; the linkage plate 210 is provided with a driving part for abutting against the driving member 230; the driving part is vertically mounted on the linkage plate 210 and abuts against the linkage plate 210 through its side.

[0067] In this embodiment, the drive component 230 is L-shaped, with the corner connected to the second rotating shaft through the mounting hole, and the two ends respectively abutting against the linkage plate 210 and the limiting component 240.

[0068] In a preferred embodiment, the limiting member 240 is provided with a beveled edge for abutting against the driving member 230; the end of the driving member 230 is arc-shaped corresponding to the beveled edge to reduce the friction between it and the limiting member.

[0069] In this embodiment, the end of the driving member 230 adopts an arc-shaped structure, which can effectively reduce the sliding friction when the driving member 230 and the limiting member 240 are relatively displaced.

[0070] In a preferred embodiment, the drive member 230 is provided with an L-shaped notch at one end near the limiting member 240; the secondary locking tongue 220 is provided with a mating portion at the notch; the mating portion is vertically installed on the secondary locking tongue 220 and is used to abut against the notch.

[0071] In this embodiment, by setting an L-shaped notch, a mating plane is formed on the position of the drive component 230 corresponding to the secondary locking tongue 220, thereby improving drive stability.

[0072] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A combination lock, characterized in that The utility model relates to a lock, including a main lock body (100) provided with a connecting plate (110) sliding in a first direction and a main lock tongue (120) sliding in a second direction respectively; the main lock tongue (120) and the connecting plate (110) are connected through a handle knob (130); the handle knob (130) is sleeved on a handle and rotationally connected with the main lock body (100) to synchronously drive the main lock tongue (120) and the connecting plate (110); both ends of the connecting plate (110) in the first direction are further provided with connecting plates (140) for connecting with a secondary lock body (200); the secondary lock body (200) is provided with a linkage plate (210) and a secondary lock tongue (220) relatively slidable and a driving member (230) and a limiting member (240) relatively rotatable; the limiting member (240) is connected with the secondary lock body (200) through a first rotating shaft to limit the secondary lock tongue (220) from sliding in the second direction; the driving member (230) is connected with the secondary lock body (200) through a second rotating shaft to drive the limiting member (240) to rotate and the secondary lock tongue (220) to slide in the second direction; the sliding direction of the linkage plate (210) is parallel to the first direction to drive the driving member (230) to rotate; the secondary lock tongue (220) is further provided with a clamping tongue (221) to form clamping limiting with the secondary lock body (200); the clamping tongue (221) is provided with two limiting protrusions to form two-stage limiting for the secondary lock tongue (220).

2. The lock according to claim 1, wherein one end of the secondary lock tongue (220) is installed inside the secondary lock body (200) and the other end can extend to outside the secondary lock body (200); the secondary lock body (200) is provided with a matching through hole corresponding to the secondary lock tongue (220) for the secondary lock tongue (220) to pass through.

3. The lock according to claim 2, wherein the secondary lock tongue (220) is provided with a matching installation groove corresponding to the clamping tongue (221); the clamping tongue (221) is located in the installation groove and hinged to the secondary lock tongue (220) at one end close to the driving member (230); the limiting protrusion includes a first protrusion close to the driving member (230) and a second protrusion away from the driving member (230); both sides of the second protrusion are inclined surfaces; one side of the first protrusion close to the second protrusion is a vertical surface and the other side away from the second protrusion is an inclined surface.

4. The lock according to claim 1, wherein the secondary lock body (200) is further provided with a return spring corresponding to the secondary lock tongue (220); the return spring extends in the second direction and is located at one side of the secondary lock tongue (220) away from the clamping tongue (221) to drive the secondary lock tongue (220) to return.

5. The lock according to claim 1, wherein the second rotating shaft is further provided with a torsion spring. The torsion spring is sleeved on the second rotating shaft and connected with the secondary lock tongue (220) to drive the secondary lock tongue (220) to reset.

6. The lock according to claim 1, wherein, The driving member (230) is L-shaped, and a matching mounting hole is arranged at the corner of the driving member (230) corresponding to the second rotating shaft; One end of the driving member (230) is in abutment with the linkage plate (210), and the other end is in abutment with the limiting member (240); The linkage plate (210) is provided with a driving portion for abutment with the driving member (230); The driving portion is vertically mounted on the linkage plate (210) and abuts with the linkage plate (210) through the side surface.

7. The lock according to claim 6, wherein, The limiting member (240) is provided with an inclined edge corresponding to the driving member (230) for abutment; The end of the driving member (230) corresponding to the inclined edge is arc-shaped to reduce the friction between the driving member (230) and the limiting member (240).

8. The lock according to claim 6, wherein, The end of the driving member (230) close to the limiting member (240) is further provided with an L-shaped notch; The secondary lock tongue (220) is provided with a butt joint portion at the notch; The butt joint portion is vertically mounted on the secondary lock tongue (220) and abuts with the notch.

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