Door lock

Abstract

The utility model relates to the technical field of door locks, in particular to a door lock which comprises a mounting box and a fixing bolt, one end of the mounting box is fixedly connected with two connecting lugs, one end of each connecting lug is rotatably connected with a rotating shaft, one end of each rotating shaft is fixedly connected with a connecting plate, and one end of the top of the mounting box is slidably connected with a push rod. One end of the push rod penetrates through the mounting box and is rotationally connected with a sliding block, a sliding groove is formed in one end of the connecting plate, the sliding block is slidably connected with the sliding groove, the end, away from the sliding block, of the push rod is sleeved with a first spring, the bottom of the rotating shaft is fixedly connected with a stop lever, and the mounting box is fixedly connected with a U-shaped frame below the connecting lug. The stop lever is in movable lap joint with the U-shaped frame, and the fixing bolt is arranged between the U-shaped frame and the connecting lug; the fixing bolt can be locked through the design of the connecting plate, the stop lever and the rotating shaft, so that the door is locked, and the fixing bolt can be clamped through the design of the clamping plate, so that the door is prevented from shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, in particular to a door lock. Background Art

[0002] In modern industrial production environments, in order to optimize production processes and ensure the safety of materials and equipment, a large number of doors are set up in the production workshop to separate different functional areas or serve as emergency exits. Many workshop doors do not need to be locked frequently in daily operation, such as ventilation holes, equipment room entrances, etc. Therefore, these locations must be installed with doors, so a door lock is needed to simply fix the door;

[0003] After searching, a Chinese patent with publication number CN218029601U discloses a door lock, including: a housing, a first lock tongue assembly, a second lock tongue assembly and a linkage assembly; the first lock tongue assembly is composed of a sliding frame, a flip tongue and a first spring; the second lock tongue assembly is composed of a slide plate and a square tongue; the linkage assembly is composed of a first toggle block, a second toggle block and a rotating wheel. When the rotating wheel rotates, the first protrusion or the second protrusion on it can abut against the side wall of the first toggle block, so that the flip tongue limit block at one end of the first toggle block moves to the outside of the sliding frame and contacts the lock of the first lock tongue assembly. The first protrusion and the second protrusion can also drive the second toggle block to rotate, so that its end is in the groove, and drive the square tongue to extend out of the housing or retract into the housing to achieve locking and unlocking;

[0004] In the above technology, although two sets of lock tongue assemblies are provided to enhance the security of the door lock, the two sets of lock tongues need to be opened simultaneously to open the door during operation, which increases the complexity of the operation. In addition, the above door lock structure is attached, resulting in high cost and inconvenience in installation. For workshop doors that only require simple fixing and do not require a high security level, these door locks appear to be too redundant and economically uneconomical.

[0005] Therefore, the utility model provides a door lock. Utility Model Content

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problems of high cost and inconvenient operation of door locks in the prior art.

[0007] To solve the above technical problems, the present utility model provides a door lock, which includes an installation box and a fixing bolt. One end of the installation box is fixedly connected with two connecting ears. One end of the connecting ear is rotatably connected with a rotating shaft. One end of the rotating shaft is fixedly connected with a connecting plate. One end of the top of the installation box is slidably connected with a push rod. One end of the push rod penetrates through the installation box and is rotatably connected with a slider. One end of the connecting plate is provided with a sliding groove, and the slider is slidably connected with the sliding groove. A first spring is sleeved on the end of the push rod away from the slider. The bottom of the rotating shaft is fixedly connected with a blocking rod. The installation box is fixedly connected with a U-shaped frame below the connecting ear, and the blocking rod is movably lapped with the U-shaped frame. The fixing bolt is arranged between the U-shaped frame and the connecting ear.

[0008] In an embodiment of the present utility model, one end of the connecting plate is fixedly connected with a holding block. One end of the push rod is fixedly connected with a baffle plate, and the baffle plate is fixedly connected with the first spring. One end of the push rod adjacent to the blocking rod is fixedly connected with a pressing plate.

[0009] In an embodiment of the present utility model, grooves are respectively arranged at both ends of the slider, and bumps are respectively fixedly connected at both ends of the sliding groove, and the grooves are slidably connected with the bumps.

[0010] In an embodiment of the present utility model, one end of the installation box is fixedly connected with a fixing plate. Installation frames are respectively slidably connected to the upper and lower ends of the fixing plate. Clamping plates are respectively fixedly connected to both ends of the installation frames, and the fixing bolt is movably connected with the clamping plates.

[0011] In an embodiment of the present utility model, first through grooves are respectively arranged at the upper and lower ends of the fixing plate. One end of the installation frame is fixedly connected with a connecting block, and the connecting block is slidably connected with the first through groove.

[0012] In an embodiment of the present utility model, second springs are respectively fixedly connected to the upper and lower ends of the fixing plate. A telescopic rod is fixedly connected inside the second spring, and both the second spring and the telescopic rod are fixedly connected with the installation frame.

[0013] In an embodiment of the present utility model, a gear is rotatably connected to one end of the fixing plate inside the installation box. The gear is located between two first through grooves. A first rack is meshed and connected to one end of the gear. One end of the first rack is fixedly connected with the connecting block above the gear. A second rack is meshed and connected to the end of the gear away from the first rack. The second rack is fixedly connected with the connecting block below the gear. One end of the first rack is fixedly connected with a sliding rod. One end of the sliding rod is provided with a transmission rod. A second through groove is arranged at one end of the transmission rod, and the sliding rod is slidably connected with the second through groove.

[0014] In an embodiment of the present utility model, a third through groove is provided at an adjacent end of the fixing plate where the installation box is located. The third through groove is slidably connected to the transmission rod. One end of the rotating shaft is fixedly connected to a connecting shaft, and the connecting shaft is fixedly connected to the transmission rod.

[0015] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0016] For a door lock of the present utility model, by fixing the installation box on the door frame and fixing the fixing bolt on the door, when the door is closed, it will drive the fixing bolt to move. During the movement of the fixing bolt, it will contact the blocking rod and drive the blocking rod to rotate, thereby driving the rotating shaft to rotate. When the rotating shaft rotates, it will drive the transmission rod to rotate, thus driving the first rack to move, and further driving the two mounting brackets to move synchronously in the opposite direction, so as to drive the two groups of clamping plates to move. When the fixing bolt completely passes through the blocking rod, it will enter between the two mounting brackets. At this time, the blocking rod loses the support of the fixing bolt and will quickly reset, thereby driving the two mounting brackets to reset, and further driving the two groups of clamping plates to move, so as to clamp the fixing bolt, thus ensuring that the door will not shake due to the blowing of the wind.

[0017] For a door lock of the present utility model, through the design of the push rod, the staff can open the door outside the door. By pressing the pressing plate on the push rod, the push rod will be driven to move. At this time, the first spring will contract. When the push rod moves, it will drive the connecting plate to rotate, thereby driving the rotating shaft to rotate, and further driving the transmission rod to rotate, so as to make the two mounting brackets move synchronously in the opposite direction, so that the two groups of clamping plates can be separated from the fixing bolt. When the rotating shaft rotates, the blocking rod will also rotate, and the bottom of the blocking rod will move above the fixing bolt. At this time, the staff can open the door outside the door, and the operation is very convenient. Description of the Drawings

[0018] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model in conjunction with the drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 It is a structural schematic diagram of the connection between the fixing bolt and the clamping plate in the present utility model;

[0021] Figure 3 It is a side sectional structural schematic diagram of the installation box in the present utility model;

[0022] Figure 4 It is a structural schematic diagram of the connection between the push rod and the connecting plate in the present utility model;

[0023] Figure 5 It is a structural schematic diagram of the connecting plate in the present utility model;

[0024] Figure 6 Structural schematic diagram of the slider in the present utility model;

[0025] Figure 7 Structural schematic diagram of the fixing plate in the present utility model;

[0026] Figure 8 is Figure 7 structural schematic diagram of another perspective of.

[0027] Explanation of the reference numerals in the drawings of the specification: 1, mounting box; 2, fixing bolt; 3, connecting ear; 4, rotating shaft; 5, connecting plate; 6, push rod; 7, connecting shaft; 8, slider; 9, sliding groove; 10, first spring; 11, stop bar; 12, U-shaped frame; 13, holding block; 14, baffle; 15, pressing plate; 16, groove; 17, convex block; 18, fixing plate; 19, mounting bracket; 20, clamping plate; 21, first through groove; 22, connecting block; 23, second spring; 24, telescopic rod; 25, gear; 26, first rack; 27, second rack; 28, sliding rod; 29, transmission rod; 30, second through groove; 31, third through groove. Detailed implementation manners

[0028] The following further illustrates the present utility model in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited do not limit the present utility model.

[0029] Referring to Figures 1 to 8 as shown, a door lock of the present utility model includes a mounting box 1 and a fixing bolt 2. Two connecting ears 3 are fixedly connected to one end of the mounting box 1. One end of the connecting ear 3 is rotatably connected to a rotating shaft 4. One end of the rotating shaft 4 is fixedly connected to a connecting plate 5. One end of the top of the mounting box 1 is slidably connected to a push rod 6. One end of the push rod 6 penetrates through the mounting box 1 and is rotatably connected to a slider 8. A sliding groove 9 is provided at one end of the connecting plate 5. The slider 8 is slidably connected to the sliding groove 9. A first spring 10 is sleeved on the end of the push rod 6 away from the slider 8. A stop bar 11 is fixedly connected to the bottom of the rotating shaft 4. A U-shaped frame 12 is fixedly connected to the mounting box 1 below the connecting ear 3. The stop bar 11 is movably lapped with the U-shaped frame 12. The fixing bolt 2 is arranged between the U-shaped frame 12 and the connecting ear 3; Grooves 16 are respectively provided at both ends of the slider 8, and convex blocks 17 are respectively fixedly connected to both ends of the sliding groove 9. The grooves 16 are slidably connected to the convex blocks 17;

[0030] In this embodiment, the installation box 1 is first fixed to the door frame, and then the fixing bolt 2 is fixed to the door, wherein the height of the fixing bolt 2 is located between the U-shaped frame 12 and the connecting ear 3. In the process of closing the door, the fixing bolt 2 will move with the door, and in the process of moving, it will push the blocking rod 11 to rotate, thereby driving the rotating shaft 4 to rotate, and then driving the connecting plate 5 to rotate. When the connecting plate 5 rotates, it will drive the slider 8 to move, wherein the design of the groove 16 and the protrusion 17 prevents the slider 8 from falling off the slide groove 9 on the connecting plate 5. In the process of the slider 8 moving, it will drive the push rod 6 to move, thereby driving the first spring 10 to contract. When the fixing bolt 2 completely passes through the blocking rod 11, the first spring 10 will rebound quickly, thereby driving the push rod 6 to move. When the door is opened from the inside, the connecting plate 5 can be directly pulled to rotate the rotating shaft 4, thereby driving the blocking rod 11 to rotate, so that the door can be opened smoothly.

[0031] like Figure 4 As shown, one end of the connecting plate 5 is fixedly connected to a holding block 13, one end of the push rod 6 is fixedly connected to a baffle 14, the baffle 14 is fixedly connected to the first spring 10, and one end of the push rod 6 adjacent to the baffle rod 11 is fixedly connected to a pressing plate 15;

[0032] In this embodiment, the design of the holding block 13 makes it easy for the staff to pull the connecting plate 5 to open the door from inside the door. The design of the baffle 14 allows the first spring 10 to be smoothly fixedly connected to the push rod 6. The design of the pressing plate 15 allows the staff to be more comfortable when pressing the push rod 6.

[0033] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, one end of the installation box 1 is fixedly connected with a fixed plate 18. The upper and lower ends of the fixed plate 18 are respectively slidably connected with mounting frames 19. The two ends of the mounting frames 19 are respectively fixedly connected with clamping plates 20. The fixing bolt 2 is movably connected with the clamping plates 20. The upper and lower ends of the fixed plate 18 are respectively provided with first through grooves 21. One end of the mounting frame 19 is fixedly connected with a connecting block 22. The connecting block 22 is slidably connected with the first through grooves 21. The upper and lower ends of the fixed plate 18 are respectively fixedly connected with second springs 23. A telescopic rod 24 is fixedly connected inside the second springs 23. Both the second springs 23 and the telescopic rod 24 are fixedly connected with the mounting frames 19. One end of the fixed plate 18 located inside the installation box 1 is rotatably connected with a gear 25. The gear 25 is located between the two first through grooves 21. One end of the gear 25 is meshed and connected with a first rack 26. One end of the first rack 26 is fixedly connected with the connecting block 22 above the gear 25. The end of the gear 25 away from the first rack 26 is meshed and connected with a second rack 27. The second rack 27 is fixedly connected with the connecting block 22 below the gear 25. One end of the first rack 26 is fixedly connected with a sliding rod 28. One end of the sliding rod 28 is provided with a transmission rod 29. One end of the transmission rod 29 is provided with a second through groove 30. The sliding rod 28 is slidably connected with the second through groove 30. The installation box 1 is provided with a third through groove 31 at one end adjacent to the fixed plate 18. The third through groove 31 is slidably connected with the transmission rod 29. One end of the rotating shaft 4 is fixedly connected with a connecting shaft 7. The connecting shaft 7 is fixedly connected with the transmission rod 29.

[0034] In this embodiment, during the process of closing the door, the fixing bolt 2 will drive the blocking rod 11 to rotate, thereby driving the rotating shaft 4 to rotate. When the rotating shaft 4 rotates, it will drive the connecting shaft 7 to rotate, and then drive the transmission rod 29 to rotate. At this time, the sliding rod 28 located in the third through groove 31 at one end of the transmission rod 29 will move upward as the transmission rod 29 rotates, and then drive the first rack 26 to move upward. When the first rack 26 moves upward, it will drive the gear 25 to rotate, thereby driving the second rack 27 to move downward. During the movement of the first rack 26 and the second rack 27, they will respectively drive the two mounting frames 19 to move synchronously in opposite directions, thereby driving the two groups of clamping plates 20 to move synchronously in opposite directions. During this process, the second springs 23 and the telescopic rods 24 will contract. When the fixing bolt 2 completely passes through the blocking rod 11, it will move between the two groups of clamping plates 20. At this time, the blocking rod 11 loses the push of the fixing bolt 2 and will quickly reset, thereby driving the rotating shaft 4 to rotate, and then driving the first rack 26 to move downward. At the same time, the second springs 23 and the telescopic rods 24 will also quickly reset, thereby driving the two groups of clamping plates 20 to move and clamp the fixing bolt 2, so that the door body will not shake due to the blowing of the wind.

[0035] Working principle: First, fix the installation box 1 on the door frame, and then fix the fixing bolt 2 on the door. The height of the fixing bolt 2 is located between the U-shaped frame 12 and the connecting ear 3. During the process of closing the door, the fixing bolt 2 will move along with the door. During the movement, it will push the blocking rod 11 to rotate, thereby driving the rotating shaft 4 to rotate, and then driving the connecting plate 5 to rotate. When the connecting plate 5 rotates, it will drive the slider 8 to move. During the movement of the slider 8, it will drive the push rod 6 to move, thereby driving the first spring 10 to contract. In addition, when the rotating shaft 4 rotates, it will drive the connecting shaft 7 to rotate, and then drive the transmission rod 29 to rotate. At this time, the sliding rod 28 in the third through groove 31 at one end of the transmission rod 29 will move upward as the transmission rod 29 rotates, thereby driving the first rack 26 to move upward. When the first rack 26 moves upward, it will drive the gear 25 to rotate, thereby driving the second rack 27 to move downward. During the movement of the first rack 26 and the second rack 27, they will respectively drive the two mounting brackets 19 to move synchronously in the opposite direction, thereby driving the two groups of clamping plates 20 to move synchronously in the opposite direction. During this process, the second spring 23 and the telescopic rod 24 will contract. When the fixing bolt 2 completely passes through the blocking rod 11, it will move between the two groups of clamping plates 20. At this time, the blocking rod 11 loses the push of the fixing bolt 2 and will quickly reset, thereby driving the rotating shaft 4 to rotate, and then driving the first rack 26 to move downward. At the same time, the second spring 23 and the telescopic rod 24 will also quickly reset, thereby driving the two groups of clamping plates 20 to move and clamp the fixing bolt 2, so that the door body will not shake due to the blowing of the wind. When it is necessary to open the door outside the door, the push rod 6 can be pushed, thereby driving the connecting plate 5 to rotate, thereby driving the rotating shaft 4 to rotate, and then driving the blocking rod 11 to rotate. When the bottom of the blocking rod 11 moves above the fixing bolt 2, when the rotating shaft 4 rotates, it will drive the two groups of clamping plates 20 to move away from the fixing bolt 2, and then the door can be smoothly pushed open. When opening the door inside the door, the holding block 13 on the connecting plate 5 can be directly pulled to make the rotating shaft 4 rotate, thereby driving the blocking rod 11 to rotate and enabling the door to be smoothly opened.

[0036] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present utility model.

Claims

1. A door lock, comprising a mounting box (1) and a fixed bolt (2), characterized in that: One end of the installation box (1) is fixedly connected with two connecting ears (3). One end of the connecting ear (3) is rotatably connected with a rotating shaft (4). One end of the rotating shaft (4) is fixedly connected with a connecting plate (5). One end of the top of the installation box (1) is slidably connected with a push rod (6). One end of the push rod (6) penetrates through the installation box (1) and is rotatably connected with a slider (8). One end of the connecting plate (5) is provided with a chute (9). The slider (8) is slidably connected with the chute (9). A first spring (10) is sleeved on the end of the push rod (6) away from the slider (8). The bottom of the rotating shaft (4) is fixedly connected with a stop rod (11). The installation box (1) is fixedly connected with a U-shaped frame (12) below the connecting ear (3). The stop rod (11) is movably lapped with the U-shaped frame (12). The fixing bolt (2) is arranged between the U-shaped frame (12) and the connecting ear (3).

2. The door lock according to claim 1, characterized in that: One end of the connecting plate (5) is fixedly connected with a holding block (13). One end of the push rod (6) is fixedly connected with a baffle (14). The baffle (14) is fixedly connected with the first spring (10). One end of the push rod (6) adjacent to the stop rod (11) is fixedly connected with a pressing plate (15).

3. A door lock according to claim 1, characterized in that: Grooves (16) are respectively arranged at both ends of the slider (8). Protrusions (17) are respectively fixedly connected at both ends of the chute (9). The grooves (16) are slidably connected with the protrusions (17).

4. A door lock according to claim 1, characterized in that: One end of the installation box (1) is fixedly connected with a fixing plate (18). Mounting frames (19) are respectively slidably connected at the upper and lower ends of the fixing plate (18). Clamping plates (20) are respectively fixedly connected at both ends of the mounting frame (19). The fixing bolt (2) is movably connected with the clamping plate (20).

5. The door lock according to claim 4, characterized in that: First through grooves (21) are respectively arranged at the upper and lower ends of the fixing plate (18). One end of the mounting frame (19) is fixedly connected with a connecting block (22). The connecting block (22) is slidably connected with the first through groove (21).

6. The door lock according to claim 5, characterized in that: Second springs (23) are respectively fixedly connected at the upper and lower ends of the fixing plate (18). A telescopic rod (24) is fixedly connected inside the second spring (23). Both the second spring (23) and the telescopic rod (24) are fixedly connected with the mounting frame (19).

7. The door lock according to claim 6, characterized in that: One end of the fixing plate (18) inside the installation box (1) is rotatably connected with a gear (25). The gear (25) is located between the two first through grooves (21). A first rack (26) is meshed and connected with one end of the gear (25). One end of the first rack (26) is fixedly connected with the connecting block (22) above the gear (25). A second rack (27) is meshed and connected with the end of the gear (25) away from the first rack (26). The second rack (27) is fixedly connected with the connecting block (22) below the gear (25). One end of the first rack (26) is fixedly connected with a sliding rod (28). One end of the sliding rod (28) is provided with a transmission rod (29). A second through groove (30) is arranged at one end of the transmission rod (29). The sliding rod (28) is slidably connected with the second through groove (30).

8. A door lock according to claim 1, characterized in that: The mounting box (1) is provided with a third through groove (31) at an adjacent end of the fixing plate (18). The third through groove (31) is slidably connected to the transmission rod (29). One end of the rotating shaft (4) is fixedly connected to a connecting shaft (7), and the connecting shaft (7) is fixedly connected to the transmission rod (29).

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