General lock cylinder control spring bolt long-stroke movable door lock

Abstract

The utility model relates to the technical field of train door locks, in particular to a long-stroke movable door lock with a lock tongue controlled by a general lock cylinder. The lock box comprises a shell, a spring reset block and a limiting block are arranged in the middle of the shell, and the shell is connected with a lock cylinder assembly and a lock head assembly through a penetrating lock rod. The lock cylinder assembly comprises a lock cylinder, a limiting plate, a sliding plate and a connecting plate. The lock head assembly comprises a lock head body and a spring bolt, the spring bolt is connected with the tail end of the lock rod, and stretching and retracting of the spring bolt are achieved through transmission of the lock rod. Through cooperation of the lock cylinder assembly, the lock box and the lock head assembly, the long-stroke vertical door opening and closing function is achieved, and diversified requirements are met; the structure is compact, operation is easy and convenient, and reliability of the door lock is improved; the spring reset block is combined with the limiting pressing strip, accurate reset of the lock cylinder and the sliding plate is guaranteed, and the lock cylinder is particularly suitable for the scene of long-stroke vertical door opening and closing and has wide market application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of train door locks, in particular to a door lock with a universal lock core controlling a lock tongue to move over a long stroke. Background Art

[0002] In the door systems of high-speed trains, subway vehicles and large public facilities, the long-stroke vertical door opening and closing function is crucial. To meet this demand, the door lock system needs to have sufficient stroke, so the lock box length needs to be increased accordingly to accommodate a longer lock tongue or lock rod. To solve this problem, technicians have conducted many explorations, such as the intelligent control lock body failure utility model disclosed in Chinese patent CN205277078U, which uses a motor-driven screw rod to achieve self-locking at any position, maintaining the door opening and closing state, without the need to replace the mechanical lock core. However, this solution still faces challenges: traditional door lock designs mainly serve flat doors. For long-stroke vertical door opening and closing, the existing door lock structure is complex, the operation is cumbersome, and the reliability needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a door lock with a universal lock core to control a lock tongue to move over a long stroke.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A universal lock cylinder controls a long-stroke movable door lock with a lock tongue, comprising the following structure:

[0006] The lock box includes a housing, a spring return block and a limit block are provided in the middle of the housing, and are respectively connected to the lock core assembly and the lock head assembly through a penetrating lock rod;

[0007] The lock core assembly includes a lock core, a limit plate, a slide plate and a connecting plate, wherein:

[0008] The lock core contacts the limit plate, and the limit plate is moved laterally by twisting the handle;

[0009] The limiting plate comprises a strip-shaped body, which is located above the lock core, has a lower groove at the bottom for cooperating with the lock core, a transverse limiting hole in the middle, and an upper protrusion at the top for cooperating with the slide plate;

[0010] The slide plate comprises a U-shaped body with a side guard strip on the top, and a pre-tightening force is applied to the top of the side guard strip through a limiting pressure strip;

[0011] A connecting plate provided with mounting holes for connecting the limiting plate and the connecting rod;

[0012] The lock assembly includes a lock body and a lock tongue. The lock tongue is connected to the end of the lock rod, and the extension and retraction of the lock tongue are achieved through the transmission of the lock rod.

[0013] This technical solution utilizes the synergy of the lock cylinder assembly, lock box, and lock head assembly to achieve a long-stroke vertical door opening and closing function to meet diverse needs; it has a compact structure, is easy to operate, and improves the reliability of the door lock; the spring reset block is combined with the limit pressure strip to ensure the precise reset of the lock cylinder and the slide. Driven by the twist handle, the lock cylinder drives the limit plate to move horizontally, which is converted into a lateral driving force; the limit plate then pushes the slide upward, forming a torque with the lock cylinder, maintaining the long-stroke state of the lock rod retracting 18mm; at the same time, the connecting plate moves with the limit plate, transmitting power to the lock rod through the connecting rod, realizing long-distance transmission; after the lock cylinder rotates, the spring reset block pushes the limit plate to reset, ensuring that the lock tongue automatically extends. The limit block positions the lock tongue in the lock box to prevent excessive movement or damage and ensure stability.

[0014] In addition, the universal lock cylinder controlled long-stroke movable door lock according to the present invention also has the following additional technical features:

[0015] According to one embodiment of the present invention, the lower groove is U-shaped with inclined sides and has three limit points for realizing different states of the lock core and the slide plate; the lower groove receives the rotational force of the lock core and converts it into a lateral driving force.

[0016] This technical solution receives the rotational force of the lock core through the lower groove and converts it into a lateral driving force, thereby realizing different state control of the lock core and the slide plate.

[0017] According to an embodiment of the present invention, the upper protrusion includes protrusion I and protrusion II, which respectively realize different limiting functions at different lock core positions; the upper protrusion cooperates with the side guard strip, and the upper protrusion pushes the slide plate to move upward.

[0018] This technical solution promotes the slide plate to move upwards by cooperating with the upper protrusion and the side guard bar, thereby achieving different limiting functions.

[0019] According to an embodiment of the present invention, the limiting pressure strip applies a pre-tightening force to the sidewall strip to ensure that the slide plate automatically resets when the driving force is lost.

[0020] This technical solution applies pre-tightening force to the sidewall strips through the limiting pressure strips, ensuring that the slide plate can automatically reset when the driving force is lost.

[0021] According to one embodiment of the present invention, the connecting rod is connected to the lock tongue through the locking rod to achieve long-stroke vertical door opening and closing; at the same time, the connecting rod is also connected to the spring return block through the locking rod to ensure that the lock core assembly is reset.

[0022] This technical solution connects the lock rod, the lock tongue and the spring reset block through a connecting rod, thereby realizing long-stroke vertical door opening and closing and resetting of the lock core assembly.

[0023] According to one embodiment of the present utility model, the lock cylinder assembly also includes a support plate, which is provided with a horizontal limit column, a vertical limit column and a reset limit column; the horizontal limit column cooperates with the limit plate to perform horizontal limitation; the vertical limit column cooperates with the slide plate to perform vertical limitation; the reset limit column cooperates with the slide plate to perform vertical reset.

[0024] This technical solution uses the support plate and its limiting columns in the lock core assembly to perform horizontal and vertical limiting and resetting, ensuring the stable operation of the lock core and the slide.

[0025] According to one embodiment of the present invention, a horizontal limiting hole is provided on the left side of the limiting plate to cooperate with the horizontal limiting column; vertical limiting holes are provided on both sides of the slide plate to cooperate with the vertical limiting column; and the end of the limiting pressure strip is provided with a mounting hole to cooperate with the reset limiting column.

[0026] This technical solution achieves precise limiting and resetting functions through the limiting holes on the limiting plate, slide plate and limiting pressure strip, in conjunction with the limiting columns on the supporting plate.

[0027] According to one embodiment of the present invention, the lock core assembly further includes a plug, which is located on the side of the support plate.

[0028] This technical solution is to set a plug in the lock core assembly, which is located on the side of the support plate, to enhance structural stability or prevent foreign matter from entering.

[0029] According to an embodiment of the present invention, the spring reset block includes a reset block body, in which a spring and a friction-reducing pad are installed; the spring cooperates with the lock rod to reset the limit plate and thereby drive the lock tongue to extend.

[0030] This technical solution uses the spring and friction-reducing pad in the spring reset block to cooperate with the lock rod to reset the limit plate and drive the lock tongue to extend.

[0031] According to an embodiment of the present invention, the friction reducing pad is arranged between the reset block body and the locking rod, and is used to reduce the friction resistance of the locking rod during movement.

[0032] This technical solution reduces the friction resistance of the lock rod during movement by providing a friction-reducing pad, thereby improving the smoothness and durability of the door lock.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The utility model has the advantages of simple structure, convenient operation, high reliability, etc. It is particularly suitable for scenarios of long-stroke vertical door opening and closing, and has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of the entire utility model.

[0036] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0037] Figure 3 It is a structural diagram of the entire lock cylinder assembly.

[0038] Figure 4 This is one of the status diagrams of the lock cylinder assembly.

[0039] Figure 5 This is the second state diagram of the lock cylinder assembly.

[0040] Figure 6 This is the third state diagram of the lock cylinder assembly.

[0041] Figure 7 It is a structural diagram of the limiting plate.

[0042] Figure 8 It is a structural diagram of a skateboard.

[0043] Figure 9 It is a structural diagram of the connecting plate.

[0044] In the figure: 1. Lock box; 2. Lock core assembly; 21. Lock core; 22. Limit plate; 221. Strip body; 222. Horizontal limit hole; 223. Lower groove; 224. Upper protrusion; 23. Slide plate; 231. U-shaped body; 232. Side bar; 233. Vertical limit hole; 24. Connecting plate; 25. Limiting pressure strip; 26. Connecting rod; 27. Horizontal limit column; 28. Vertical limit column; 29. ​​Plug; 3. Lock assembly; 31. Lock body; 32. Lock tongue; 4. Spring return block; 41. Reset block body; 42. Spring; 5. Lock rod; 6. Limit block. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example 1

[0047] like Figures 1 to 9 As shown, this embodiment provides a universal lock cylinder controlled lock tongue long stroke movable door lock, including the following structure:

[0048] The lock box 1 includes a housing, the middle part of which is provided with a spring return block 4 and a limit block 6, which are respectively connected to the lock core assembly 2 and the lock head assembly 3 through a penetrating lock rod 5;

[0049] The lock core assembly 2 includes a lock core 21, a limit plate 22, a slide plate 23 and a connecting plate 24, wherein:

[0050] The lock core 21 contacts the limit plate 22, and the limit plate 22 is moved laterally by twisting the handle;

[0051] The limiting plate 22 includes a strip-shaped body 221, which is located above the lock core 21, has a lower groove 223 at the bottom that cooperates with the lock core 21, a transverse limiting hole 222 in the middle, and an upper protrusion 224 at the top that cooperates with the slide plate 23;

[0052] The slide plate 23 includes a U-shaped body 231 with a sidewall strip 232 on the top. The top of the sidewall strip 232 is preloaded by a limiting pressure strip 25.

[0053] The connecting plate 24 is provided with a mounting hole for connecting the limiting plate 22 and the connecting rod 26;

[0054] The lock assembly 3 includes a lock body 31 and a lock tongue 32 . The lock tongue 32 is connected to the end of the lock rod 5 , and the lock tongue 32 is extended and retracted through the transmission of the lock rod 5 .

[0055] like Figures 1 to 9 As shown, this technical solution utilizes the coordinated operation of the lock cylinder assembly 2, lock box 1, and lock head assembly 3 to achieve a long-stroke vertical door opening and closing function, meeting diverse needs. It features a compact structure, easy operation, and improved door lock reliability. The spring return block 4 is combined with the limiting pressure strip 25 to ensure the precise reset of the lock cylinder 21 and the slide plate 23. Driven by the twist handle, the lock cylinder 21 drives the limiting plate 22 to move laterally, converting this into a lateral driving force. The limiting plate 22 then pushes the slide plate 23 upward, creating a torque with the lock cylinder 21, maintaining the long-stroke state of the lock rod 5 retracted by 18mm. At the same time, the connecting plate 24 moves with the limiting plate 22, transmitting power to the lock rod 5 via the connecting rod 26, achieving long-distance transmission. After the lock cylinder 21 rotates, the spring return block 4 pushes the limiting plate 22 to reset, ensuring that the lock tongue 32 automatically extends. The limiting block 6 positions the lock tongue 32 in the lock box 1, preventing excessive movement or damage and ensuring stability.

[0056] In addition, the universal lock cylinder controlled long-stroke movable door lock according to the present invention also has the following additional technical features:

[0057] According to one embodiment of the present invention, the lower groove 223 is U-shaped with inclined sides and has three limit points for realizing different states of the lock core 21 and the slide plate 23; the lower groove 223 receives the rotational force of the lock core 21 and converts it into a lateral driving force.

[0058] This technical solution receives the rotational force of the lock core 21 through the lower groove 223 and converts it into a lateral driving force, thereby achieving different state control of the lock core 21 and the slide plate 23.

[0059] According to one embodiment of the present invention, the upper protrusion 224 includes protrusion I and protrusion II, which respectively realize different limiting functions at different positions of the lock core 21; the upper protrusion 224 cooperates with the side guard strip 232, and the upper protrusion 224 pushes the slide plate 23 to move upward.

[0060] In this technical solution, the upper protrusion 224 cooperates with the sidewall strip 232 to push the slide plate 23 upward, thereby achieving different limiting functions.

[0061] According to an embodiment of the present invention, the limiting pressure strip 25 applies a pre-tightening force to the sidewall strip 232 to ensure that the slide plate 23 automatically resets when the driving force is lost.

[0062] This technical solution applies a pre-tightening force to the sidewall strip 232 through the limiting pressure strip 25, ensuring that the slide plate 23 can automatically reset when the driving force is lost.

[0063] According to one embodiment of the present invention, the connecting rod 26 is connected to the lock tongue 32 through the locking rod 5 to achieve long-stroke vertical door opening and closing; at the same time, the connecting rod 26 is also connected to the spring return block 4 through the locking rod 5 to ensure that the lock core assembly 2 is reset.

[0064] This technical solution connects the lock rod 5 with the lock tongue 32 and the spring reset block 4 through the connecting rod 26, thereby realizing long-stroke vertical door opening and closing and resetting the lock core assembly 2.

[0065] According to one embodiment of the present utility model, the lock core assembly 2 also includes a support plate, which is provided with a horizontal limit column 27, a vertical limit column 28 and a reset limit column; the horizontal limit column 27 cooperates with the limit plate 22 to perform horizontal limitation; the vertical limit column 28 cooperates with the slide plate 23 to perform vertical limitation; the reset limit column cooperates with the slide plate 23 to perform vertical reset.

[0066] This technical solution uses the support plate and its limiting columns in the lock core assembly 2 to perform horizontal and vertical limiting and resetting, ensuring the stable operation of the lock core 21 and the slide plate 23.

[0067] According to one embodiment of the present utility model, a horizontal limiting hole 222 is provided on the left side of the limiting plate 22 to cooperate with the horizontal limiting column 27; vertical limiting holes 233 are provided on both sides of the slide plate 23 to cooperate with the vertical limiting column 28; and the end of the limiting pressure strip 25 is provided with a mounting hole to cooperate with the reset limiting column.

[0068] This technical solution realizes precise limiting and resetting functions through the limiting holes on the limiting plate 22, the sliding plate 23 and the limiting pressure strip 25, in conjunction with the limiting columns on the supporting plate.

[0069] According to an embodiment of the present invention, the lock core assembly 2 further includes a plug 29, which is located on the side of the support plate.

[0070] This technical solution is to provide a plug 29 in the lock core assembly 2, which is located on the side of the support plate to enhance structural stability or prevent foreign matter from entering.

[0071] According to an embodiment of the present invention, the spring return block 4 includes a return block body 41 , in which a spring 42 and a friction reducing pad are installed; the spring 42 cooperates with the lock rod 5 to reset the limit plate 22 and thereby drive the lock tongue 32 to extend.

[0072] In this technical solution, the spring 42 and the friction reducing pad in the spring return block 4 cooperate with the lock rod 5 to reset the limit plate 22 and drive the lock tongue 32 to extend.

[0073] According to an embodiment of the present invention, the friction reducing pad is provided between the reset block body 41 and the locking rod 5 to reduce the friction resistance of the locking rod 5 during movement.

[0074] This technical solution reduces the friction resistance of the lock rod 5 during movement by providing a friction-reducing pad, thereby improving the smoothness and durability of the door lock.

[0075] The usage process of the above embodiment is as follows:

[0076] like Figures 1 to 9 As shown, the lock core 21 drives the limit plate 22 to move horizontally under the drive of the twist handle, which is converted into a horizontal driving force, pushing the slide plate 23 to move upward, forming a torque with the lock core 21, and maintaining the long stroke state of the lock rod 5 retracted 18mm; at the same time, the connecting plate 24 moves with the limit plate 22, and transmits power to the lock rod 5 through the connecting rod 26 to achieve long-distance transmission; after the lock core 21 rotates, the spring return block 4 pushes the limit plate 22 to reset, ensuring that the lock tongue 32 automatically extends; the limit block 6 positions the lock tongue 32 in the lock box 1 to prevent excessive movement or damage; in addition, the lower groove 223, the upper protrusion 224, the limit pressure strip 25, the support plate and its limit column and other structures ensure the accurate reset and stable operation of the lock core 21 and the slide plate 23; the setting of the friction reduction pad reduces the friction resistance during the movement of the lock rod 5, thereby improving the smoothness and durability of the door lock; the overall structure is compact and easy to operate, meeting diverse needs and improving the reliability of the door lock.

[0077] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall fall within the scope of the present invention. Any changes or substitutions that can be easily conceived by a person of ordinary skill in the art within the technical scope disclosed in the present invention shall fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A universal lock cylinder controlled long-stroke movable door lock, characterized in that: Includes the following structure: The lock box (1) comprises a housing, wherein a spring return block (4) and a limit block (6) are provided in the middle of the housing, and are respectively connected to a lock core assembly (2) and a lock head assembly (3) via a penetrating lock rod (5); The lock core assembly (2) comprises a lock core (21), a limiting plate (22), a slide plate (23) and a connecting plate (24), wherein: The lock core (21) contacts the limit plate (22) and drives the limit plate (22) to move laterally by twisting the handle; The limiting plate (22) includes a strip-shaped body (221), the strip-shaped body (221) is located above the lock core (21), has a lower groove (223) at the bottom that cooperates with the lock core (21), a transverse limiting hole (222) in the middle, and an upper protrusion (224) at the top that cooperates with the slide plate (23); The slide plate (23) includes a U-shaped body (231) and a sidewall strip (232) on the top. The top of the sidewall strip (232) is subjected to a pre-tightening force by a limiting pressure strip (25); A connecting plate (24) is provided with a mounting hole for connecting the limiting plate (22) and the connecting rod (26); The lock assembly (3) comprises a lock body (31) and a lock tongue (32). The lock tongue (32) is connected to the end of a lock rod (5). The lock tongue (32) is extended and retracted through the transmission of the lock rod (5).

2. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 1, characterized in that: The lower groove (223) is U-shaped with two sides tilted and has three limit points for realizing different states of the lock core (21) and the slide plate (23); the lower groove (223) receives the rotation force of the lock core (21) and converts it into a lateral driving force.

3. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 1, characterized in that: The upper protrusion (224) includes a protrusion I and a protrusion II, which respectively realize different limiting functions at different positions of the lock core (21); the upper protrusion (224) cooperates with the sidewall strip (232), and the upper protrusion (224) pushes the slide plate (23) to move upward.

4. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 1, characterized in that: The limiting pressure strip (25) applies a pre-tightening force to the sidewall strip (232), ensuring that the slide plate (23) automatically resets when the driving force is lost.

5. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 1, characterized in that: The connecting rod (26) is connected to the lock tongue (32) through the locking rod (5) to realize long-stroke vertical door opening and closing; at the same time, the connecting rod (26) is also connected to the spring return block (4) through the locking rod (5) to ensure that the lock core assembly (2) is reset.

6. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 1, characterized in that: The lock core assembly (2) further comprises a supporting plate, which is provided with a transverse limiting column (27), a vertical limiting column (28) and a reset limiting column; the transverse limiting column (27) cooperates with the limiting plate (22) to perform transverse limiting; the vertical limiting column (28) cooperates with the slide plate (23) to perform vertical limiting; and the reset limiting column cooperates with the slide plate (23) to perform vertical resetting.

7. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 6, characterized in that: The left side of the limiting plate (22) is provided with a transverse limiting hole (222) that matches the transverse limiting column (27); both sides of the slide plate (23) are provided with vertical limiting holes (233) that match the vertical limiting column (28); and the end of the limiting pressure strip (25) is provided with a mounting hole that matches the reset limiting column.

8. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 6, characterized in that: The lock core assembly (2) further comprises a plug (29), which is located on the side of the support plate.

9. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 1, characterized in that: The spring reset block (4) comprises a reset block body (41) with a spring (42) and a friction-reducing pad installed inside; the spring (42) cooperates with the lock rod (5) to reset the limit plate (22) and thereby drive the lock tongue (32) to extend.

10. The universal lock cylinder controlled lock tongue long stroke movable door lock according to claim 9, characterized in that: The friction reducing pad is arranged between the reset block body (41) and the locking rod (5) and is used to reduce the friction resistance of the locking rod (5) during movement.

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