First-gear connecting rod transmission lock body

Abstract

The utility model discloses a one-gear connecting rod transmission lock body which is mainly composed of a lock shell assembly, a lock cover assembly, a latch bolt assembly, a three-bolt assembly and the like, all the internal assemblies work cooperatively, and through the unique connecting rod transmission design, the problem that a traditional two-gear mechanical lever lock body is jammed and jumps when knocked out or withdrawn is solved. Due to the double-pressure-bearing supporting point design of the three-bolt shifting plate, lock body accessories can bear the axial pressure of 5000 Nm under the condition that heat treatment is not conducted, each kinematic pair is of a low pair structure, abrasion is light, the service life is long, a limiting block on the lock cover prevents the main bolt from being withdrawn, a push plate jumps upwards, a small lock head is arranged at a safety assembly, and safety is improved. During use, the handle, the lock cylinder and other operations can drive the internal components to achieve corresponding actions of the latch bolt, the main bolt and the heaven and earth hook, the functions of door opening, locking and the like are achieved, the overall structure is simple, and the machining and assembling cost is low.

Description

Technical Field

[0001] This utility model relates to the field of lock body technology, specifically a single-stage linkage transmission lock body. Background Technology

[0002] Among existing mechanical lock bodies, two-position mechanical lever lock bodies have some obvious defects. During use, their outward or retracting action often results in jamming or skipping, which not only affects the normal use of the lock body but may also cause the door lock to be unable to open or close smoothly, causing great inconvenience to users. At the same time, some structural parts of traditional lock bodies wear out relatively quickly, have a short service life, and their operational reliability needs to be improved. Moreover, some lock bodies have complex structures, are difficult to manufacture, have many rivets, and have high assembly costs.

[0003] Therefore, it is necessary to design a single-stage linkage transmission lock body to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a single-speed linkage transmission lock body to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A first-speed linkage transmission lock body includes a lock housing assembly, a lock cover assembly, a latch assembly, a three-bolt assembly, a guide plate assembly, a safety assembly, a deadbolt, a latch lever assembly, a single-section lever shaft, a starter plate assembly, a three-bolt lever, a main bolt retraction push plate, and a main bolt extension push plate.

[0007] The lock cover assembly is installed in conjunction with the lock housing assembly. The latch assembly, three-bolt assembly, guide plate assembly, safety assembly, deadbolt, latch lever assembly, starter plate assembly, three-bolt lever, main bolt retraction push plate, and main bolt extension push plate are all installed in the space formed by the lock housing assembly and the lock cover assembly. The three-bolt lever is designed with two pressure support points for axial pressure. The lock cover assembly is also provided with a limit block to prevent the main bolt retraction push plate from jumping up. A small lock head is also provided on one side below the safety assembly.

[0008] As a preferred embodiment of this utility model, the oblique tongue paddle assembly is rotatably connected to the paddle shaft by being sleeved on the paddle shaft, and the oblique tongue paddle assembly can perform circular motion around the axis of the paddle shaft under the drive of the paddle shaft.

[0009] As a preferred embodiment of this utility model, the main bolt retraction push plate and the oblique tongue lever assembly form a separable transmission connection through a contact point. When the oblique tongue lever assembly rotates clockwise, it pushes the main bolt retraction push plate to perform lever motion through the contact point.

[0010] As a preferred embodiment of this utility model, the three-bolt lever is rotatably connected to the lock housing assembly via a guide rivet sleeved on the lock housing assembly, and the three-bolt lever can perform circular motion around the axis of the guide rivet under the drive of the main bolt pushing out the push plate and the main bolt retracting the push plate.

[0011] As a preferred embodiment of this utility model, the three-bolt assembly and the three-bolt lever are connected by a slot and a protrusion, so that the three-bolt assembly can move linearly along the guide rivet and guide plate assembly under the drive of the three-bolt lever.

[0012] As a preferred embodiment of this utility model, the deadbolt is installed at the edge of the lock housing assembly and the lock cover assembly, and is connected to the three bolt assembly through a transmission rod. When the three bolt assembly pops out or retracts, the deadbolt moves synchronously through the transmission rod.

[0013] As a preferred embodiment of this utility model, the starter plate assembly, through its cooperation with the eccentric protrusion on a section of the dial shaft, enables the starter plate assembly to swing when the section of the dial shaft rotates.

[0014] As a preferred embodiment of this utility model, the main bolt ejection push plate and the starting plate assembly are hinged by a pin, so that the swing of the starting plate assembly can drive the main bolt ejection push plate to rotate.

[0015] As a preferred embodiment of this utility model, the guide plate assembly is fixedly installed inside the lock housing assembly, and the guide plate assembly is provided with a guide groove. The slider of the three-bolt assembly is embedded in the guide groove to ensure that the three-bolt assembly moves in a straight line along the guide groove during the movement.

[0016] As a preferred embodiment of this utility model, the latch assembly is slidably connected to the lock housing assembly and the lock cover assembly via a guide rail, so that the latch assembly can make linear sliding motion between the lock housing assembly and the lock cover assembly.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model, through the design of a single-speed linkage transmission lock body, achieves the following effects: 1. The single-speed linkage transmission structure avoids the jamming and skipping phenomenon that occurs when the original two-speed mechanical lever lock body is engaged or disengaged, ensuring that the lock body can be engaged or disengaged normally, thus improving reliability and stability; 2. Each moving pair is generally a low-pair structure, which results in less wear on the lock body, a longer service life, and more reliable operation, reducing the inconvenience and cost caused by frequent maintenance or replacement of the lock body; 3. The unique design of two pressure-bearing support points on the three-bolt lever allows the lock body components to withstand axial pressure of up to 5000 Nm without heat treatment, enhancing the overall strength and durability of the lock body; 4. This lock body structure is easy to process, with fewer rivets, greatly reducing processing difficulty and production costs. Meanwhile, the fewer rivets also make the assembly process simpler and improve production efficiency; 5. The limiting block set on the lock cover effectively prevents the main bolt from jumping up and causing the lock cylinder to slip and fall into the lock body parts, ensuring the normal operation of the lock cylinder and improving the security of the lock body. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the three-bolt assembly and the oblique tongue assembly of this utility model after retraction;

[0020] Figure 2 This is a three-dimensional structural diagram of the three-bolt assembly of this utility model after it has been ejected.

[0021] Figure 3 This is a schematic diagram of the planar structure of the three-bolt assembly after it has popped out.

[0022] Figure 4 This is a schematic diagram of the planar structure of the three-bolt assembly and the oblique tongue assembly of this utility model;

[0023] Figure 5 This is a side view of the structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the planar structure of the guide plate assembly of this utility model.

[0025] In the diagram: 1. Lock housing assembly; 2. Lock cover assembly; 3. Lug bolt assembly; 4. Three-bolt assembly; 5. Guide plate assembly; 6. Safety assembly; 7. Top and bottom hooks; 8. Lug bolt lever assembly; 9. First-section lever shaft; 10. Starter plate assembly; 11. Three-bolt lever; 12. Main bolt retraction push plate; 13. Main bolt extension push plate; 14. Pressure support point; 15. Limit block; 16. Small lock cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] For examples, please refer to Figures 1-6 This utility model provides a technical solution:

[0031] A single-stage linkage lock body includes a lock housing assembly 1, a lock cover assembly 2, a latch assembly 3, a three-bolt assembly 4, a guide plate assembly 5, a safety assembly 6, a deadbolt 7, a latch lever assembly 8, a single-section lever shaft 9, a starter plate assembly 10, a three-bolt lever 11, a main bolt retraction push plate 12, and a main bolt extension push plate 13. The lock cover assembly 2 is installed in conjunction with the lock housing assembly 1. The latch assembly 3, three-bolt assembly 4, guide plate assembly 5, safety assembly 6, deadbolt 7, latch lever assembly 8, starter plate assembly 10, three-bolt lever 11, main bolt retraction push plate 12, and main bolt extension push plate 13 are all installed within the space formed by the lock housing assembly 1 and the lock cover assembly 2. The three-bolt lever 11 is designed with 2 axial pressures. There are pressure support points 14, and a limit block 15 is also provided on the lock cover assembly 2 to prevent the main bolt from retracting and the push plate 12 from jumping up. A small lock head 16 is also provided on one side below the safety assembly 6. Install the lock body on the door and ensure that the lock case assembly 1 and the lock cover assembly 2 are installed firmly. In daily use, the internal components of the lock body are moved by the handle, lock cylinder and other parts according to different operating needs.

[0032] Specifically, the latching lever assembly 8 is rotatably connected to a section of the lever shaft 9 by being sleeved on it, and the latching lever assembly 8 can perform circular motion around the axis of the section of the lever shaft 9 under the drive of the section of the lever shaft 9. When the handle drives the section of the lever shaft 9 to rotate, the latching lever assembly 8 performs circular motion around its axis under the drive of the section of the lever shaft 9. During the door opening operation, the section of the lever shaft 9 rotates 33.3° clockwise, and the latching lever assembly 8 rotates accordingly; thus achieving stable transmission of the latching lever assembly 8, providing power for the subsequent retraction of the latching lever assembly 3, and ensuring smooth door opening.

[0033] Specifically, the main latch retraction push plate and the 12-bolt latch assembly 8 form a separable transmission connection through a contact point. When the 12-bolt latch assembly 8 rotates clockwise, it pushes the main latch retraction push plate 12 to perform a lever motion through this contact point. After the 12-bolt latch assembly 8 rotates clockwise, it makes point contact with the main latch retraction push plate 12, pushing the main latch retraction push plate 12 to perform a lever motion. This transmission relationship is effective during the door opening process when the handle retracts the latch; it converts the circular motion of the latch assembly 8 into the lever motion of the main latch retraction push plate 12, indirectly controlling the retraction of the latch assembly 3, making the door opening operation smooth.

[0034] Specifically, the three-bolt lever 11 is rotatably connected to the lock housing assembly 1 via a guide rivet fitted onto the lock housing assembly 1. Driven by the bolt extension push plate 13 and the bolt retraction push plate 12, the three-bolt lever 11 can rotate around the axis of the guide rivet. The bolt extension push plate 13 or the bolt retraction push plate 12 drives the three-bolt lever 11, causing it to rotate around the guide rivet on the lock housing assembly 1. During bolt ejection, locking, and bolt retraction operations, the three-bolt lever 11 moves in this manner, ensuring the stability and accuracy of its movement and enabling the three-bolt assembly 4 to accurately eject or retract, thus realizing the locking and unlocking functions of the lock body.

[0035] Specifically, the three-bolt assembly 4 and the three-bolt lever 11 are connected by a slot and a protrusion, allowing the three-bolt assembly 4 to move linearly along the guide rivet and guide plate assembly 5 under the drive of the three-bolt lever 11. When the three-bolt lever 11 rotates, it drives the three-bolt assembly 4 through the slot and protrusion, causing the three-bolt assembly 4 to move linearly along the guide rivet and guide plate assembly 5. The three-bolt assembly 4 moves in this manner during the ejection, locking, and retraction of the main bolt. Precise control of the movement trajectory of the three-bolt assembly 4 ensures stable ejection or retraction, enhancing the security and reliability of the lock body.

[0036] Specifically, the top and bottom hooks 7 are installed at the edges of the lock housing assembly 1 and the lock cover assembly 2, and are connected to the three-bolt assembly 4 via a transmission rod. When the three-bolt assembly 4 pops out or retracts, the top and bottom hooks 7 move synchronously via the transmission rod; when the three-bolt assembly 4 pops out or retracts, the top and bottom hooks 7 move synchronously via the transmission rod. During the main bolt popping out, locking, and retracting operations, the top and bottom hooks 7 move with the three-bolt assembly 4; this increases the locking point of the lock body, improves door security, and makes the door more secure when closed.

[0037] Specifically, the starter plate assembly 10 engages with an eccentric protrusion on a section of the derailleur 9, enabling the starter plate assembly 10 to swing when the derailleur 9 rotates; the eccentric protrusion, in turn, drives the starter plate assembly 10 to swing when the derailleur 9 rotates. This engagement plays a crucial role in the retraction of the handle after the main bolt is ejected, enabling power transmission and motion conversion, thus providing power for the subsequent rotation of the push plate 13 that drives the main bolt.

[0038] Specifically, the main bolt ejection push plate 13 and the starter plate assembly 10 are hinged by a pin, allowing the swing of the starter plate assembly 10 to drive the main bolt ejection push plate 13 to rotate; when the starter plate assembly 10 swings, it drives the main bolt ejection push plate 13 to rotate via the pin. During the handle retraction operation after the main bolt is ejected, the starter plate assembly 10 drives the main bolt ejection push plate 13 to move; further transmitting power to achieve the rotation of the main bolt ejection push plate 13, thereby driving the three-bolt assembly 4 to retract, completing the door opening action.

[0039] Specifically, the guide plate assembly 5 is fixedly installed inside the lock housing assembly 1, and the guide plate assembly 5 is provided with a guide groove. The slider of the three-bolt assembly 4 is embedded in the guide groove to ensure that the three-bolt assembly 4 moves in a straight line along the guide groove during movement. The slider of the three-bolt assembly 4 is embedded in the guide groove of the guide plate assembly 5 and slides along the guide groove during movement. During the pop-out and retraction process of the three-bolt assembly 4, it is always guided by the guide plate assembly 5, ensuring the linearity and stability of the movement of the three-bolt assembly 4 and improving the accuracy and reliability of the lock body operation.

[0040] Specifically, the latch assembly 3 is slidably connected to the lock housing assembly 1 and the lock cover assembly 2 via a guide rail, allowing the latch assembly 3 to slide linearly between the lock housing assembly 1 and the lock cover assembly 2. During the opening and closing process, the latch assembly 3 moves in this manner, ensuring smooth and stable movement and guaranteeing the normal opening and closing functions of the lock body.

[0041] The working process of this utility model:

[0042] 1. Door opening procedure: Retracting the latch (handle):

[0043] Rotating the handle causes the first section of the lever shaft 9 to rotate 33.3° clockwise. The first section of the lever shaft 9 causes the latch plate assembly 8 to move in a circular motion around its axis. After rotating clockwise, the latch plate assembly 8 makes point contact with the main bolt retraction push plate 12, pushing the main bolt retraction push plate 12 to make lever motion. The lever motion of the main bolt retraction push plate 12 causes the latch assembly 3 to make linear sliding motion along the guide rail between the lock housing assembly 1 and the lock cover assembly 2, thereby realizing the retraction of the latch assembly 3.

[0044] 2. Main bolt ejection and locking procedure:

[0045] Rotating the handle causes the first section of the pivot 9 to rotate counterclockwise by 37.1°. The first section of the pivot 9 drives the main bolt push plate 13 and the three-bolt lever 11 to rotate. The three-bolt lever 11 makes a circular motion around the guide rivet on the lock housing assembly 1. The three-bolt lever 11 drives the three-bolt assembly 4 to make a linear motion along the guide rivet and the guide groove on the guide plate assembly 5 through the cooperation of the slot and the protrusion, so that the three-bolt assembly 4 pops out. When the three-bolt assembly 4 pops out, it drives the deadbolt 7 to be launched synchronously through the transmission rod.

[0046] 3. Procedure for retracting the lock cylinder after the main bolt pops out:

[0047] Turn the lock cylinder from inside or outside the door to make it rotate clockwise. The lock cylinder drives the main bolt retraction push plate 12 to perform lever transmission. The main bolt retraction push plate 12 drives the three bolt lever plate 11 to rotate around the guide rivet. The three bolt lever plate 11 drives the three bolt assembly 4 to move linearly along the guide groove of the guide rivet and the guide plate assembly 5, thereby realizing the retraction of the three bolt assembly 4. When the three bolt assembly 4 retracts, it drives the deadbolt 7 to retract synchronously through the transmission rod.

[0048] 4. Procedure for retracting the handle after the main bolt is ejected:

[0049] Turning the handle inside the door causes the first section of the pivot 9 to rotate 33.3° along the center positioning hole on the lock housing assembly 1 and the lock cover assembly 2. The first section of the pivot 9 drives the starter plate assembly 10 to swing. The starter plate assembly 10 drives the main bolt push plate 13 to rotate via the pin. At the same time, the first section of the pivot 9 drives the latch plate assembly 8 to rotate clockwise. The latch plate assembly 8 drives the main bolt retraction push plate 12 to rotate clockwise around the three-bolt plate 11. The three-bolt plate 11 drives the three-bolt assembly 4 to move linearly along the guide groove of the guide rivet and the guide plate assembly 5, and begins to retract. During the retraction process of the three-bolt assembly 4 under the spring force, the latch plate assembly 8 contacts the latch assembly 3, causing the latch assembly 3 to slide linearly along the guide rail. Both retract simultaneously.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-stage linkage transmission lock body, characterized in that: It includes a lock housing assembly (1), a lock cover assembly (2), a latch assembly (3), a three-bolt assembly (4), a guide plate assembly (5), a safety assembly (6), a deadbolt (7), a latch lever assembly (8), a single-section lever shaft (9), a starter plate assembly (10), a three-bolt lever (11), a main bolt retraction push plate (12), and a main bolt ejection push plate (13). The lock cover assembly (2) is installed in conjunction with the lock housing assembly (1). The latch assembly (3), the three-bolt assembly (4), the guide plate assembly (5), the safety assembly (6), the deadbolt (7), the latch lever assembly (8), the starter plate assembly (10), the three-bolt lever (11), the main bolt retraction push plate (12), and the main bolt ejection push plate (13) are all installed in the space formed by the lock housing assembly (1) and the lock cover assembly (2). The three-bolt lever (11) is designed with two pressure support points (14) for axial pressure. The lock cover assembly (2) is also provided with a limit block (15) to prevent the main bolt retraction push plate (12) from jumping up. A small lock head (16) is also provided on one side below the safety assembly (6).

2. The first-gear linkage transmission lock body according to claim 1, characterized in that: The oblique tongue paddle assembly (8) is rotatably connected to the first paddle shaft (9) by being sleeved on the first paddle shaft (9), and the oblique tongue paddle assembly (8) can make circular motion around the axis of the first paddle shaft (9) under the drive of the first paddle shaft (9).

3. The first-gear linkage transmission lock body according to claim 1, characterized in that: The main bolt retraction push plate and the oblique tongue lever assembly (8) form a separable transmission connection through the contact point. When the oblique tongue lever assembly (8) rotates clockwise, it pushes the main bolt retraction push plate (12) to make lever motion through the contact point.

4. The first-gear linkage transmission lock body according to claim 1, characterized in that: The three-bolt lever (11) is rotatably connected to the lock housing assembly (1) via a guide rivet sleeved on the lock housing assembly (1), and the three-bolt lever (11) can make circular motion around the axis of the guide rivet under the drive of the main bolt pushing out the push plate (13) and the main bolt retracting the push plate (12).

5. The first-gear linkage transmission lock body according to claim 1, characterized in that: The three-bolt assembly (4) and the three-bolt lever (11) are connected by a slot and a protrusion, so that the three-bolt assembly (4) can move linearly along the guide rivet and guide plate assembly (5) under the drive of the three-bolt lever (11).

6. The first-gear linkage transmission lock body according to claim 1, characterized in that: The top and bottom hooks (7) are installed at the edge of the lock housing assembly (1) and the lock cover assembly (2), and are connected to the three bolt assembly (4) through the transmission rod. When the three bolt assembly (4) pops out or retracts, the top and bottom hooks (7) are driven to move synchronously through the transmission rod.

7. The first-gear linkage transmission lock body according to claim 1, characterized in that: The starter plate assembly (10) engages with an eccentric protrusion on a section of the rotary shaft (9) to enable the starter plate assembly (10) to swing when the section of the rotary shaft (9) rotates.

8. The first-gear linkage transmission lock body according to claim 1, characterized in that: The main bolt ejector plate (13) and the starter plate assembly (10) are hinged by a pin, so that the swing of the starter plate assembly (10) can drive the main bolt ejector plate (13) to rotate.

9. A first-gear linkage transmission lock body according to claim 1, characterized in that: The guide plate assembly (5) is fixedly installed inside the lock housing assembly (1), and the guide plate assembly (5) is provided with a guide groove. The slider of the three bolt assembly (4) is embedded in the guide groove to ensure that the three bolt assembly (4) moves in a straight line along the guide groove during the movement.

10. A first-gear linkage transmission lock body according to claim 1, characterized in that: The latch assembly (3) is slidably connected to the lock housing assembly (1) and the lock cover assembly (2) via a guide rail, so that the latch assembly (3) can make linear sliding motion between the lock housing assembly (1) and the lock cover assembly (2).

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