Multi-point lock locking link reversing mechanism

By driving the locking rod and lower linkage to move synchronously with the motor, and combining the meshing linkage between the steering gear and the upper linkage, the problem of complex structure and low reliability of traditional multi-point locks is solved, and convenient and efficient locking and unlocking of the lock is achieved.

CN224379579UActive Publication Date: 2026-06-19SUZHOU KUNSHAN GENERAL LOCKSET CO LTD
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Patent Information

Application Number
CN202521452645.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-11
Publication Date
2026-06-19
Estimated Expiration
2035-07-11

AI Technical Summary

Technical Problem

Traditional multi-point locks are complex in structure and have low reliability when the upper and lower pins move simultaneously, making it difficult to meet the modern market's demand for convenience and security.

Method used

The motor assembly drives the locking rod and the lower link to move synchronously in the same direction. The steering gear meshes with the rack at the end of the upper link to achieve synchronous reverse movement of the upper and lower links. This, combined with the electric bolt lock latch assembly, enables the upper and lower electric bolt lock latches to move simultaneously.

Benefits of technology

The multi-point lock's upper and lower electric bolt components can move simultaneously upward or downward to complete the locking and unlocking functions, improving the lock's reliability and convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a reversing mechanism for a multi-point lock linkage, relating to the field of multi-point lock technology. The utility model includes a panel and a motor assembly fixedly mounted on the panel; a lock rod, a lower linkage, and an upper linkage are slidably mounted within the panel; the output end of the motor assembly is fixedly connected to the lock rod and the lower linkage; the upper and lower linkages are respectively linked to a steering gear via upper and lower racks at their ends; a steering gear fixing housing is fixedly connected to the panel surface by screws. In this utility model, when the motor assembly drives the lock rod and lower linkage upwards, the upper linkage moves downwards due to the action of the steering gear; conversely, when the motor assembly drives the lock rod and lower linkage downwards, the upper linkage moves upwards. This reverse motion mechanism precisely matches the movement mode of the upper and lower sets of electric bolt latch assemblies, realizing the simultaneous upward or downward movement of the upper and lower electric bolt latch assemblies of the multi-point lock, thereby completing the locking and unlocking functions of the lock.
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Description

Technical Field

[0001] This utility model relates to the field of multi-point lock technology, specifically to a multi-point lock linkage reversing mechanism. Background Technology

[0002] In the field of hardware locks, traditional multi-point locks usually use manual operation or simple mechanical structures to achieve locking and unlocking functions; however, with the continuous development of technology and people's increasing requirements for convenience and security, traditional multi-point locks can no longer meet the needs of the modern market.

[0003] Existing locks have shortcomings in multi-point locking functionality, especially when the upper and lower pins move simultaneously, resulting in complex structures and low reliability. To meet market demands, the development of a fully automatic multi-point lock requires a linkage reversing mechanism capable of simultaneously moving the upper and lower pins upwards or downwards.

[0004] Therefore, a multi-point locking linkage reversing mechanism is proposed. Utility Model Content

[0005] The purpose of this utility model is to solve the problems mentioned in the background art by providing a multi-point locking linkage reversing mechanism.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A multi-point locking linkage reversing mechanism, including a panel and a motor assembly fixedly mounted on the panel;

[0008] A locking rod, a lower connecting rod, and an upper connecting rod are slidably installed inside the panel;

[0009] The output end of the motor assembly is fixedly connected to the locking rod and the lower connecting rod;

[0010] The upper connecting rod and the lower connecting rod are respectively connected to the steering gear through the upper rack and the lower rack at their ends;

[0011] The panel surface is fixedly connected to a steering gear fixing shell by screws, which is used to limit the rotation of the steering gear. The motor assembly drives the locking rod and the lower connecting rod to move synchronously and in the same direction, and the steering gear is used to drive the upper connecting rod and the locking rod to move synchronously in opposite directions.

[0012] An electric bolt lock tongue assembly is installed on the first mounting crossbeam at the end of the locking rod and on the second mounting crossbeam at the end of the upper connecting rod.

[0013] Furthermore, the panel has a U-shaped cross-section, and the locking rod, lower connecting rod, and upper connecting rod are all slidably disposed within the panel along its length and are in contact with the inner wall of the panel.

[0014] Furthermore, the surfaces of the locking rod, lower connecting rod, and upper connecting rod are respectively provided with guide grooves, and the inner wall of the panel is threaded with a limit bolt. The limit bolt is located in the guide groove and is used to limit the sliding stroke of the locking rod, lower connecting rod, and upper connecting rod.

[0015] Furthermore, a convex shaft is fixedly installed on one side wall of the steering gear fixing housing, and the steering gear is rotatably sleeved on the surface of the convex shaft to achieve rotational limitation and support of the steering gear.

[0016] Furthermore, the electric bolt lock latch assembly includes: a nut positioning piece fixedly installed on the first mounting frame and the second mounting frame, a nut installed on the nut positioning piece, and an electric bolt lock latch rod threadedly engaged with the nut; an electric bolt lock latch is fixed to the end of the electric bolt lock latch rod, an electric bolt lock housing is slidably sleeved on the outside of the electric bolt lock latch, an electric bolt lock latch panel is fitted to the end of the electric bolt lock housing, and the electric bolt lock latch panel and the electric bolt lock housing are connected by a Phillips countersunk screw.

[0017] Furthermore, the electric bolt latch assembly also includes an electric bolt latch spring installed inside the electric bolt lock housing. One end of the electric bolt latch spring is connected to the electric bolt latch, and the other end is connected to the inner wall of the electric bolt lock housing, which is used to provide an automatic reset function for the latch.

[0018] The beneficial effects of this utility model are as follows:

[0019] Driven by the motor assembly, the locking rod and lower connecting rod move synchronously and in the same direction. Through the engagement of the steering gear with the upper rack at the end of the upper connecting rod and the lower rack at the end of the lower connecting rod, the upper and lower connecting rods move synchronously in opposite directions. When the motor assembly drives the locking rod and lower connecting rod to move upward, the upper connecting rod moves downward due to the action of the steering gear; conversely, when the motor assembly drives the locking rod and lower connecting rod to move downward, the upper connecting rod moves upward. This reverse movement mechanism perfectly matches the movement mode of the upper and lower sets of electric bolt latch assemblies, realizing the simultaneous upward or downward movement of the upper and lower electric bolt latch assemblies of the multi-point lock, thereby completing the locking and unlocking functions of the lock. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a utility model Figure 2 Enlarged view of part A;

[0023] Figure 4 This is a partial exploded view of this utility model;

[0024] Figure 5 This is a schematic diagram of the panel of this utility model;

[0025] Figure 6 This is a schematic diagram of the upper connecting rod of this utility model;

[0026] Figure 7 This is a schematic diagram of the latch assembly of the electric bolt lock of this utility model;

[0027] Reference numerals: 1. Panel; 2. Motor assembly; 3. Locking rod; 31. First mounting crossbeam; 4. Lower connecting rod; 41. Lower rack; 5. Upper connecting rod; 51. Upper rack; 52. Second mounting crossbeam; 6. Steering gear; 7. Screw; 8. Steering gear fixing housing; 9. Limit bolt; 10. Electric bolt lock latch assembly; 101. Nut positioning plate; 102. Nut; 103. Electric bolt lock latch rod; 104. Electric bolt lock housing; 105. Electric bolt lock latch panel; 106. Phillips countersunk screw; 107. Electric bolt lock latch; 108. Electric bolt lock latch spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] like Figures 1 to 7 As shown, the multi-point locking linkage reversing mechanism includes a panel 1 and a motor assembly 2 fixedly mounted on the panel 1; a locking rod 3, a lower linkage 4 and an upper linkage 5 are slidably mounted inside the panel 1.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, in some practical applications, the cross-section of panel 1 is U-shaped, and the locking rod 3, lower connecting rod 4 and upper connecting rod 5 are all slidably arranged inside panel 1 along its length direction and are in contact with the inner wall of panel 1.

[0034] More specifically, the cross-section of panel 1 is U-shaped, providing sliding tracks for locking rod 3, lower connecting rod 4, and upper connecting rod 5. All three are slidably arranged within panel 1 along its length and fit against the inner wall of panel 1. This ensures that locking rod 3, lower connecting rod 4, and upper connecting rod 5 maintain a stable and accurate sliding path during movement, avoiding deviation or jamming during movement and ensuring the reliability and stability of the entire multi-point locking linkage reversing mechanism.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, in some practical applications, the surfaces of the locking rod 3, the lower connecting rod 4 and the upper connecting rod 5 are respectively provided with guide grooves, and the inner wall of the panel 1 is threaded with a limit bolt 9. The limit bolt 9 is located in the guide groove and is used to limit the sliding stroke of the locking rod 3, the lower connecting rod 4 and the upper connecting rod 5.

[0036] More specifically, the function of the limiting bolt 9 is to limit the sliding stroke of the locking rod 3, the lower connecting rod 4 and the upper connecting rod 5. When the motor assembly 2 drives the locking rod 3 and the lower connecting rod 4 to move, the cooperation between the limiting bolt 9 and the guide groove can ensure that the locking rod 3, the lower connecting rod 4 and the upper connecting rod 5 slide accurately within the predetermined stroke range, preventing them from exceeding the design stroke, thereby ensuring the normal operation of the entire mechanism.

[0037] The output end of the motor assembly 2 is fixedly connected to the locking rod 3 and the lower connecting rod 4; the upper connecting rod 5 and the lower connecting rod 4 are respectively connected to the steering gear 6 through the upper rack 51 and the lower rack 41 at their ends; the surface of the panel 1 is fixedly connected to the steering gear fixing shell 8 by screws 7, which is used to limit the rotation of the steering gear 6.

[0038] In some practical applications, a cam shaft is fixedly installed on one side wall of the steering gear fixing housing 8, and the steering gear 6 is rotatably sleeved on the surface of the cam shaft to achieve rotation limit and support for the steering gear 6.

[0039] More specifically, the steering gear fixing housing 8 and the cam shaft provide stable support and accurate rotation limit for the steering gear 6, ensuring that the steering gear 6 can accurately convert the motion of the lower link 4 into the reverse motion of the upper link 5, thereby guaranteeing the motion accuracy and reliability of the entire multi-point locking linkage reversing mechanism.

[0040] Among them, the motor assembly 2 drives the locking rod 3 and the lower connecting rod 4 to move synchronously and in the same direction, and the steering gear 6 is used to drive the upper connecting rod 5 to move synchronously and in the opposite direction to the locking rod 3; the electric bolt lock tongue assembly 10 is installed on the first mounting crossbeam 31 at the end of the locking rod 3 and the second mounting crossbeam 52 at the end of the upper connecting rod 5.

[0041] like Figure 6 and Figure 7 As shown, specifically, the electric bolt lock latch assembly 10 includes: a nut positioning piece 101 fixedly installed on the first mounting crossbeam 31 and the second mounting crossbeam 52, a nut 102 installed on the nut positioning piece 101, and an electric bolt lock latch rod 103 threadedly engaged with the nut 102; an electric bolt lock latch 107 is fixedly attached to the end of the electric bolt lock latch rod 103, an electric bolt lock housing 104 is slidably sleeved on the outside of the electric bolt lock latch 107, an electric bolt lock latch panel 105 is fitted to the end of the electric bolt lock housing 104, and the electric bolt lock latch panel 105 and the electric bolt lock housing 104 are connected by a cross countersunk screw 106.

[0042] More specifically, the bolt latch assembly 10 can work in conjunction with the locking bar 3 to extend and retract the bolt during the locking and unlocking process of the lock. When the locking bar 3 and the upper connecting rod 5 move, the bolt latch rod 103 is moved by the fixing action of the nut positioning plate 101 and the nut 102, which in turn causes the bolt latch 107 to slide inside the bolt lock housing 104, thereby realizing the extension or retraction of the bolt and completing the locking and unlocking functions of the lock.

[0043] like Figure 6 and Figure 7As shown, in some practical applications, the electric bolt latch assembly 10 also includes an electric bolt latch spring 108 installed inside the electric bolt lock housing 104. One end of the electric bolt latch spring 108 is connected to the electric bolt latch 107, and the other end is connected to the inner wall of the electric bolt lock housing 104, which is used to provide an automatic reset function for the latch.

[0044] More specifically, when the lock is in use, the elastic force of the electric bolt latch spring 108 will push the electric bolt latch 107 to automatically reset, so that the electric bolt latch 107 can quickly and accurately return to the initial position, thereby improving the reliability of the lock.

[0045] In summary: Driven by the motor assembly 2, the locking rod 3 and the lower connecting rod 4 move synchronously and in the same direction. Through the engagement of the steering gear 6 with the upper rack 51 at the end of the upper connecting rod 5 and the lower rack 41 at the end of the lower connecting rod 4, the upper connecting rod 5 and the lower connecting rod 4 move synchronously in opposite directions. When the motor assembly 2 drives the locking rod 3 and the lower connecting rod 4 to move upward, the upper connecting rod 5 will move downward due to the action of the steering gear 6; conversely, when the motor assembly 2 drives the locking rod 3 and the lower connecting rod 4 to move downward, the upper connecting rod 5 moves upward. This reverse movement mechanism is exactly in line with the movement mode of the upper and lower sets of electric bolt latch assemblies 10, realizing the simultaneous upward or downward movement of the upper and lower electric bolt latch assemblies 10 of the multi-point lock, thereby completing the locking and unlocking functions of the lock.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-point locking linkage reversing mechanism, characterized in that, Includes a panel (1) and a motor assembly (2) fixedly mounted on the panel (1); A locking rod (3), a lower connecting rod (4), and an upper connecting rod (5) are slidably installed inside the panel (1). The output end of the motor assembly (2) is fixedly connected to the locking rod (3) and the lower connecting rod (4); The upper connecting rod (5) and the lower connecting rod (4) are respectively connected to the steering gear (6) through the upper rack (51) and the lower rack (41) at their ends; The panel (1) is fixedly connected to a steering gear fixing shell (8) by screws (7) for rotating and limiting the steering gear (6). The motor assembly (2) drives the locking rod (3) and the lower connecting rod (4) to move synchronously and in the same direction. The steering gear (6) is used to drive the upper connecting rod (5) and the locking rod (3) to move synchronously in opposite directions. An electric bolt latch assembly (10) is installed on the first mounting crossbeam (31) at the end of the locking rod (3) and on the second mounting crossbeam (52) at the end of the upper connecting rod (5).

2. The multi-point locking linkage reversing mechanism according to claim 1, characterized in that, The panel (1) has a U-shaped cross-section. The locking rod (3), lower connecting rod (4) and upper connecting rod (5) are all slidably arranged inside the panel (1) along its length direction and are in contact with the inner wall of the panel (1).

3. The multi-point locking linkage reversing mechanism according to claim 1, characterized in that, The surfaces of the locking rod (3), the lower connecting rod (4) and the upper connecting rod (5) are respectively provided with guide grooves. The inner wall of the panel (1) is threaded with a limit bolt (9). The limit bolt (9) is located in the guide groove and is used to limit the sliding stroke of the locking rod (3), the lower connecting rod (4) and the upper connecting rod (5).

4. The multi-point locking linkage reversing mechanism according to claim 1, characterized in that, A convex shaft is fixedly installed on one side wall of the steering gear fixing shell (8), and the steering gear (6) is rotatably sleeved on the surface of the convex shaft to realize the rotation limit and support of the steering gear (6).

5. The multi-point locking linkage reversing mechanism according to claim 1, characterized in that, The electric bolt latch assembly (10) includes: a nut positioning piece (101) fixedly installed on the first mounting frame (31) and the second mounting frame (52), a nut (102) installed on the nut positioning piece (101), and an electric bolt latch rod (103) threadedly engaged with the nut (102); an electric bolt latch (107) is fixed at the end of the electric bolt latch rod (103), and an electric bolt lock housing (104) is slidably sleeved on the outside of the electric bolt latch (107). An electric bolt latch panel (105) is fitted to the end of the electric bolt lock housing (104), and the electric bolt latch panel (105) and the electric bolt lock housing (104) are connected by a cross countersunk screw (106).

6. The multi-point locking linkage reversing mechanism according to claim 5, characterized in that, The electric bolt latch assembly (10) also includes an electric bolt latch spring (108) installed inside the electric bolt lock housing (104). One end of the electric bolt latch spring (108) is connected to the electric bolt latch (107), and the other end is connected to the inner wall of the electric bolt lock housing (104), which is used to provide the automatic reset function of the latch.