A latch locking device with escape function

Abstract

The utility model belongs to the technical field of protective door equipment, especially, it relates to a bolt locking device with escape function, it includes door lock bolt mechanism, fixed plate, transmission shaft and limit block, the middle installation of transmission shaft has rotary disc, the both ends of transmission shaft are provided with the inside handle and the outside handle respectively located inside and outside both sides of door leaf, door lock bolt mechanism is connected with rotary disc, the limit slot is provided on the limit block, the limit rod is installed on rotary disc, limit rod one end extends to limit slot, rotary disc is installed with disc shaft sleeve, the inside handle is installed with handle shaft sleeve, the front end of handle shaft sleeve is provided with the outer convex inclined block, the rear end of disc shaft sleeve is provided with the inner concave inclined slot, the utility model outside handle cannot control door lock bolt mechanism to carry out the unlocking action under normal condition, namely, the warehouse door is in the locked state, if continuously rotating the inside handle can make door lock bolt mechanism unlock, realize the function that the warehouse door can be unlocked from the inside, solve the problem that personnel are trapped in the inside of warehouse door.

Description

Technical Field

[0001] This utility model belongs to the technical field of protective door equipment, and in particular relates to a bolt locking device with an escape function. Background Technology

[0002] On swing doors leading to and from museum storage, art gallery storage, armory, and other areas, ordinary bolts used daily cannot meet the locking requirements. For example, old-fashioned bolts with gear and rack transmissions have complex structures and are cumbersome to operate, or split-type surface-mounted bolts are unsightly, not burglarproof, and require multiple manual operations to lock or unlock, and cannot be linked with anti-theft locks.

[0003] Conventional warehouse doors do not have an unlocking function, and the handwheel latch of the warehouse door does not have a related structural design inside. When the warehouse door latch mechanism is locked with the anti-theft lock, the people inside the warehouse cannot open the door to leave on their own, which poses a risk of people being trapped. If no one outside opens the door for a long time, the people trapped inside are also in danger of death.

[0004] This utility model designs a pin-locking device with an escape function to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An escape-function latch locking device includes a door lock latch mechanism, a fixed plate, a drive shaft, and a limiting block. The door lock latch mechanism, fixed plate, and limiting block are all mounted on the door leaf. The drive shaft is rotatably connected to the fixed plate. A rotating disc is installed in the middle of the drive shaft. An inner handwheel and an outer handwheel are installed at both ends of the drive shaft, located on the inner and outer sides of the door leaf, respectively. The door lock latch mechanism is connected to the rotating disc. A limiting groove is provided on the limiting block. A limiting rod is installed on the rotating disc, with one end of the limiting rod extending into the limiting groove. A disc bushing is installed on the rotating disc. A handwheel bushing is installed on the inner handwheel. The front end of the disc bushing contacts the rear end of the handwheel bushing. The front end of the handwheel bushing is provided with an outwardly protruding inclined block, and the rear end of the disc bushing is provided with an inwardly concave inclined groove. The outwardly protruding inclined block is located in the inwardly concave inclined groove. A compression spring that abuts against the fixed plate is connected to the rear end of the disc bushing.

[0007] As a preferred embodiment, the door lock bolt mechanism includes a horizontal bolt assembly, an upper bolt assembly, and a lower bolt assembly. The horizontal bolt assembly includes a transmission block and a horizontal bolt connecting rod. The transmission block is mounted on the door leaf, and the horizontal bolt connecting rod is mounted on the transmission block. One or more horizontal bolts are mounted on the horizontal bolt connecting rod, and two symmetrically distributed sequential blocks are mounted on the horizontal bolt connecting rod. A gear rack is mounted on the transmission block, and a gear capable of meshing with the gear rack is mounted on the rotating disc.

[0008] As a preferred embodiment, the upper pin assembly includes an upper pin, an upper pin mounting base, an upper pin rod, and an upper connecting rod. The upper pin mounting base is installed on the door leaf, the upper pin rod slides on the door leaf, the upper pin is installed at the top of the upper pin rod and passes through the upper pin mounting base, and the two ends of the upper connecting rod are respectively connected to the bottom end of the upper pin rod and the rotating disc.

[0009] As a preferred embodiment, it also includes a balance block, one end of which is connected to the aligning block, and the other end of which is connected to the transmission block.

[0010] As a preferred embodiment, the lower pin assembly includes a lower pin, a lower pin mounting base, a lower pin rod, and a lower connecting rod. The lower pin mounting base is installed on the door leaf, the lower pin rod slides on the door leaf, the lower pin is installed at the bottom end of the lower pin rod, and the lower pin passes through the lower pin mounting base. The two ends of the lower connecting rod are respectively connected to the top end of the lower pin rod and the rotating disc.

[0011] As a preferred option, a counterweight is installed on the lower pin rod.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] 1. The locking and unlocking actions of the door lock bolt mechanism of this utility model are controlled by a rotating disc. Under normal circumstances, the outer handwheel cannot control the door lock bolt mechanism to unlock, that is, the vault door is in a locked state. If the inner handwheel is controlled to rotate, the handwheel bushing that rotates with the inner handwheel will drive the disc bushing to move under the cooperation of the outer convex inclined block and the inner concave inclined groove, thereby causing the rotating disc to move along the axis of the transmission shaft, resulting in the separation of the limit rod and the limit groove. The rotating disc will then be in a rotatable state, that is, the vault door is in an unlockable state. Therefore, continuous rotation of the inner handwheel can unlock the door lock bolt mechanism, realizing the function of unlocking the vault door from the inside, and solving the problem of people being trapped inside the vault door. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] Figure 2 This is a front view schematic diagram of this utility model.

[0016] Figure 3 This is a rear view schematic diagram of this utility model.

[0017] Figure 4 This is a schematic diagram showing the positional relationship between the limiting groove and the limiting rod of this utility model.

[0018] Figure 5 This is a schematic diagram showing the positional relationship between the gear rack and the gear in this utility model.

[0019] Figure 6 This is a utility model Figure 3A cross-sectional view at point AA.

[0020] Figure 7 This is a schematic diagram showing the positional relationship between the disc bushing and the handwheel bushing of this utility model.

[0021] Figure 8 This is a cross-sectional schematic diagram of the rotating disk of this utility model.

[0022] Figure 9 This is a cross-sectional schematic diagram of the inner handwheel of this utility model.

[0023] The following are the labels in the diagram: 1. Fixed plate; 2. Drive shaft; 3. Limiting block; 4. Rotating disc; 5. Inner handwheel; 6. Outer handwheel; 7. Limiting groove; 8. Limiting rod; 9. Disc bushing; 10. Handwheel bushing; 11. Outer convex inclined block; 12. Inner concave inclined groove; 13. Compression spring; 20. Horizontal pin assembly; 21. Drive block; 22. Horizontal pin connecting rod; 23. Horizontal pin; 24. Sequencing block; 25. Gear rack; 26. Gear; 30. Upper pin assembly; 31. Upper pin; 32. Upper pin mounting seat; 33. Upper pin rod; 34. Upper connecting rod; 35. Balance block; 40. Lower pin assembly; 41. Lower pin; 42. Lower pin mounting seat; 43. Lower pin rod; 44. Lower connecting rod; 45. Counterweight. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following embodiments or drawings are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] A bolt locking device with escape function, such as Figures 1 to 9 As shown, the device includes a door lock bolt mechanism, a fixed plate 1, a drive shaft 2, and a limiting block 3. The door lock bolt mechanism, fixed plate 1, and limiting block 3 are all mounted on the door leaf. The drive shaft 2 is rotatably connected to the fixed plate 1. A rotating disc 4 is mounted in the middle of the drive shaft 2. Inner handwheels 5 and outer handwheels 6, located on the inner and outer sides of the door leaf respectively, are mounted at both ends of the drive shaft 2. The door lock bolt mechanism is connected to the rotating disc 4. A limiting groove 7 is provided on the limiting block 3. A limiting groove 7 is provided on the rotating disc 4. A limit rod 8 is installed, with one end of the limit rod 8 extending into the limit groove 7. A disc bushing 9 is installed on the rotating disc 4, and a handwheel bushing 10 is installed on the inner handwheel 5. The front end of the disc bushing 9 contacts the rear end of the handwheel bushing 10, and the front end of the handwheel bushing 10 is provided with an outwardly protruding inclined block 11. The rear end of the disc bushing 9 is provided with an inwardly concave inclined groove 12, and the outwardly protruding inclined block 11 is located in the inwardly concave inclined groove 12. The rear end of the disc bushing 9 is connected to a compression spring 13 that abuts against the fixed plate 1.

[0026] The locking and unlocking actions of the door lock bolt mechanism are controlled by the rotating disc 4. Under normal circumstances, the outer handwheel 6 cannot control the door lock bolt mechanism to unlock, that is, the vault door is in a locked state. If the inner handwheel 5 is controlled to rotate, with the cooperation of the outer convex inclined block 11 and the inner concave inclined groove 12, the handwheel bushing 10 that rotates with the inner handwheel 5 will drive the disc bushing 9 to move, thereby causing the rotating disc 4 to move along the axis of the transmission shaft 2, causing the limit rod 8 to separate from the limit groove 7, and the rotating disc 4 will be in a rotatable state, that is, the vault door is in an unlockable state. Therefore, continuously rotating the inner handwheel 5 can unlock the door lock bolt mechanism, realize the function of unlocking the vault door from the inside, and solve the problem of people being trapped inside the vault door.

[0027] The limiting block 3 is used to control the door lock bolt mechanism to achieve the locking function. The outer handwheel 6 drives the rotating disk 4 to rotate. With the cooperation of the limiting rod 8 and the limiting groove 7, the rotating disk 4 drives the limiting block 3 to move laterally, thereby controlling the door lock bolt mechanism to perform the locking action. In addition, the inner handwheel 5 can also control the door lock bolt mechanism to lock in the same way.

[0028] The limiting groove 7 is elliptical in shape. The drive shaft 2 is connected to the disc bushing 9 via a key drive. Therefore, the rotating disc 4 can move along the axial direction of the drive shaft 2 within a certain range and rotate synchronously with the drive shaft 2. The compression spring 13 is used to reset the rotating disc 4 after displacement.

[0029] like Figure 1 and Figure 2 As shown, the door lock bolt mechanism includes a horizontal bolt assembly 20, an upper bolt assembly 30, and a lower bolt assembly 40. The horizontal bolt assembly 20 includes a transmission block 21 and a horizontal bolt connecting rod 22. The transmission block 21 is mounted on the door leaf, and the horizontal bolt connecting rod 22 is mounted on the transmission block 21. One or more horizontal bolts 23 are mounted on the horizontal bolt connecting rod 22. Two symmetrically distributed alignment blocks 24 are mounted on the horizontal bolt connecting rod 22. A gear rack 25 is mounted on the transmission block 21, and a gear 26 that can mesh with the gear rack 25 is mounted on the rotating disk 4.

[0030] After the inner handwheel 5, handwheel bushing 10, and disc bushing 9 control the rotating disc 4 to move along the axis of the transmission shaft 2, the gear 26 on the rotating disc 4 will mesh with the gear row 25 on the transmission block 21. Then, the rotating disc 4 can control the transmission block 21 to move laterally, so that the door lock bolt mechanism can unlock.

[0031] like Figure 1 , Figure 3 and Figure 7As shown, the upper pin assembly 30 includes an upper pin 31, an upper pin mounting base 32, an upper pin rod 33, and an upper connecting rod 34. The upper pin mounting base 32 is mounted on the door leaf, the upper pin rod 33 slides on the door leaf, the upper pin 31 is mounted on the top of the upper pin rod 33 and passes through the upper pin mounting base 32, and the two ends of the upper connecting rod 34 are respectively connected to the bottom end of the upper pin rod 33 and the rotating disk 4. It also includes a balance block 35, the upper end of the balance block 35 is connected to the alignment block 24, and the lower end of the balance block 35 is connected to the transmission block 21.

[0032] The lower pin assembly 40 includes a lower pin 41, a lower pin mounting base 42, a lower pin rod 43, and a lower connecting rod 44. The lower pin mounting base 42 is mounted on the door leaf, the lower pin rod 43 slides on the door leaf, the lower pin 41 is mounted on the bottom end of the lower pin rod 43 and passes through the lower pin mounting base 42, the two ends of the lower connecting rod 44 are respectively connected to the top end of the lower pin rod 43 and the rotating disk 4, and a counterweight 45 is mounted on the lower pin rod 43.

[0033] The upper pin mounting base 32 and the lower pin mounting base 42 are used to guide and fix the upper pin 31 and the lower pin 41. The counterweight 45 can balance the overall weight of the upper pin assembly 30 during the movement of the upper pin 31 and the lower pin 41, making the entire door lock pin mechanism lighter during the transmission process.

[0034] The installation steps of this utility model are as follows:

[0035] A large number of uprights are pre-installed on the door leaf for fixing various accessories. The upper pin mounting base 32 is installed on the door leaf with screws. The upper pin 31 and the upper pin rod 33 are assembled together with screws and then installed on the uprights and the upper pin mounting base 32 with nuts.

[0036] The lower pin mounting base 42 is installed on the door leaf with screws. The lower pin 41, lower pin rod 43, and counterweight 45 are assembled together with screws and then installed on the column and the lower pin mounting base 42 with nuts.

[0037] The transmission block 21, the horizontal pin connecting rod 22, the horizontal pin 23, and the alignment block 24 are assembled together with screws and then installed on the column with nuts.

[0038] The drive shaft 2 is assembled inside the fixed plate 1. The fixed plate 1 is installed on the door leaf with screws. The outer handwheel 6 is installed on the drive shaft 2 with screws. The drive key is installed on the drive shaft 2. The compression spring 13 is assembled inside the rotating disk 4. The rotating disk 4 is then assembled onto the drive shaft 2, and the drive key is connected to the rotating disk 4.

[0039] The limiting block 3 is installed on the column with a nut, so that the limiting block 3 is located outside the rotating disk 4, and the limiting rod 8 of the rotating disk 4 is located in the limiting groove 7 on the limiting block 3;

[0040] The upper connecting rod 34 is assembled onto the upper pin rod 33 and the rotating disk 4 using a cotter pin, and the lower connecting rod 44 is assembled onto the lower pin rod 43 and the rotating disk 4 using a cotter pin.

[0041] Install the inner handwheel 5 onto the drive shaft 2 using screws.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A bolt locking device with an escape function, characterized in that: The door lock includes a door lock bolt mechanism, a fixed plate (1), a drive shaft (2), and a limiting block (3). The door lock bolt mechanism, the fixed plate (1), and the limiting block (3) are all installed on the door leaf. The drive shaft (2) is rotatably connected to the fixed plate (1). A rotating disc (4) is installed in the middle of the drive shaft (2). Inner handwheels (5) and outer handwheels (6) are installed at both ends of the drive shaft (2) on the inner and outer sides of the door leaf, respectively. The door lock bolt mechanism is connected to the rotating disc (4). A limiting groove (7) is provided on the limiting block (3). A limiting groove (7) is installed on the rotating disc (4). Position rod (8), one end of the limiting rod (8) extends into the limiting groove (7), a disc bushing (9) is installed on the rotating disc (4), a handwheel bushing (10) is installed on the inner handwheel (5), the front end of the disc bushing (9) contacts the rear end of the handwheel bushing (10), and the front end of the handwheel bushing (10) is provided with an outward protruding inclined block (11), the rear end of the disc bushing (9) is provided with an inward concave inclined groove (12), the outward protruding inclined block (11) is located in the inward concave inclined groove (12), and the rear end of the disc bushing (9) is connected to a compression spring (13) that abuts against the fixed plate (1).

2. The escape-function locking device according to claim 1, characterized in that: The door lock bolt mechanism includes a horizontal bolt assembly (20), an upper bolt assembly (30), and a lower bolt assembly (40). The horizontal bolt assembly (20) includes a transmission block (21) and a horizontal bolt connecting rod (22). The transmission block (21) is installed on the door leaf, and the horizontal bolt connecting rod (22) is installed on the transmission block (21). One or more horizontal bolts (23) are installed on the horizontal bolt connecting rod (22). Two symmetrically distributed sequential blocks (24) are installed on the horizontal bolt connecting rod (22). A gear rack (25) is installed on the transmission block (21), and a gear (26) that can mesh with the gear rack (25) is installed on the rotating disk (4).

3. The escape-function pin locking device according to claim 2, characterized in that: The upper pin assembly (30) includes an upper pin (31), an upper pin mounting base (32), an upper pin rod (33), and an upper connecting rod (34). The upper pin mounting base (32) is installed on the door leaf, the upper pin rod (33) slides on the door leaf, the upper pin (31) is installed on the top of the upper pin rod (33), and the upper pin (31) passes through the upper pin mounting base (32). The two ends of the upper connecting rod (34) are respectively connected to the bottom end of the upper pin rod (33) and the rotating disk (4).

4. The escape-function locking device according to claim 3, characterized in that: It also includes a balance block (35), one end of which is connected to the aligning block (24), and the other end of which is connected to the transmission block (21).

5. A bolt locking device with an escape function according to claim 3 or 4, characterized in that: The lower pin assembly (40) includes a lower pin (41), a lower pin mounting base (42), a lower pin rod (43), and a lower connecting rod (44). The lower pin mounting base (42) is installed on the door leaf, the lower pin rod (43) slides on the door leaf, the lower pin (41) is installed at the bottom end of the lower pin rod (43), and the lower pin (41) passes through the lower pin mounting base (42). The two ends of the lower connecting rod (44) are respectively connected to the top end of the lower pin rod (43) and the rotating disk (4).

6. A bolt locking device with escape function according to claim 5, characterized in that: A counterweight (45) is installed on the lower pin (43).

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