Elevator landing door lock

Abstract

The utility model relates to an elevator landing door lock which comprises a landing door head, a door hanging plate and a door frame, the door frame is fixed on the back face of the landing door head, the door hanging plate is movably hung on the front face of the landing door head, a fixed lock hook is arranged on the landing door head, and the fixed lock hook is close to the side of the door frame. A door lock mechanism is installed on the door hanging plate, opening and closing of the door lock mechanism are matched with a lock hole formed in the fixed lock hook, and locking and unlocking between the door hanging plate and the landing door head are achieved. A triangular lock is installed on the door frame, and the unlocking end of the triangular lock and the unlocking end of the door lock mechanism are unlocked through shifting of the triangular lock. The door lock mechanism is installed on the door hanging plate, locking and unlocking between the door hanging plate and the landing door head are achieved through opening and closing of the door lock mechanism and the fixed lock hook on the landing door head, the triangular lock is installed on the door frame, and the triangular lock can be opened only through a triangular key of a special tool. The lock has the advantages of reliable action, no looseness, simple structure and convenience in unlocking.

Description

Technical Field

[0001] The utility model belongs to the technical field of lock bodies, and in particular relates to an elevator floor door lock. Background Art

[0002] Elevator floor doors refer to doors that are automatically opened and closed to provide safety shielding on each floor where the elevator stops. In order to ensure that the floor doors are not illegally opened before the car arrives, thereby ensuring the safety of passengers, a door lock mechanism needs to be set to keep the two door bodies in a closed state and lock them. The existing door lock mechanism generally uses the door knife arm on the car door machine to clamp. During the clamping process, the door ball is automatically pushed to rotate the lock hook block along the shaft, thereby achieving locking and unlocking between the two door bodies; at the same time, the door knife arm on the car door machine is also required to clamp the door ball of the floor door lock mechanism to drive the floor door to open and close the door; at the same time, a triangular lock needs to be set on the door frame or door leaf of the floor door, which can be opened by a special tool triangular key to drive the mechanism to open the door lock. Usually, the triangular lock is set on the door frame or the door leaf, and a swing rod is provided on the triangular lock, and the swing rod moves a certain mechanism to open the door lock. When the triangular lock is set on the door frame, a mechanism needs to be provided, and the swing rod on the triangular lock needs to move the mechanism first, and then the door lock is opened by rotating the mechanism. Unlocking is more troublesome and the structure is more complicated. Summary of the invention

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an elevator floor door lock which has reliable action and is convenient to unlock.

[0004] The purpose of the utility model is achieved through the following technical scheme. The elevator floor door lock comprises a floor door head, a door hanging plate and a door frame. The door frame is fixed on the back side of the floor door head. The door hanging plate is movably hung on the front side of the floor door head. A fixed lock hook is provided on the floor door head, and the fixed lock hook is close to the door frame side. A door lock mechanism is installed on the door hanging plate. The opening and closing of the door lock mechanism are adapted to the lock hole provided on the fixed lock hook, and the locking and unlocking between the door hanging plate and the floor door head are realized. A triangular lock is installed on the door frame. The toggling of the triangular lock enables the unlocking end of the triangular lock to be unlocked with the unlocking end of the door lock mechanism.

[0005] The beneficial effects of the utility model are as follows: compared with the prior art, a door lock mechanism is installed on the door hanging plate, and locking and unlocking between the door hanging plate and the door head of the floor door are achieved through the opening and closing of the door lock mechanism and the fixed lock hook on the door head of the floor door, which has the advantages of reliable action without looseness and compact structure; and a triangular lock is installed on the door frame, which can be opened by a triangular key of a special tool, which has the advantages of simple structure and convenient unlocking.

[0006] Preferably, the door lock mechanism includes a lock hook block, a moving door ball, a fixed door ball and a lock base plate, the lock base plate is fixed to the door hanging plate, the moving door ball and the fixed door ball are respectively installed on one end of the lock hook block, and the fixed door ball is connected to the lock shaft provided on the lock base plate, the moving door ball and the fixed door ball are obliquely distributed along the lock hook block, and the moving door ball and the fixed door ball are respectively distributed in a one-to-one correspondence with the door knife arm; a lock hook matched with the lock hole is provided on the other end of the lock hook block; the moving door ball and the fixed door ball are respectively distributed corresponding to the door knife arm, and the door head of the floor door and the door hanging plate are locked or unlocked by opening or closing the two door knife arms.

[0007] Preferably, a limiting shaft is installed on the lock hook block, an unlocking ball is installed on one end of the limiting shaft, and a limiting hole is provided on the lock bottom plate which is compatible with the unlocking ball; through the setting of the above structure, excessive rotation of the lock hook block can be prevented, so that the lock hook block has a rotation range during the locking and unlocking process.

[0008] Preferably, the limit hole is a runway-type structure and is divided into an upper limit end and a lower limit end. When the door lock mechanism is locked with the floor door head, the unlocking ball on the limit shaft abuts against the lower limit end of the limit hole. When the door lock mechanism is unlocked with the floor door head, the unlocking ball on the limit shaft abuts against the upper limit end of the limit hole. Through the arrangement of the above structure, the unlocking ball on the limit shaft has a range of movement in the limit hole, so that the lock hook block will not rotate excessively during the unlocking or locking process.

[0009] Preferably, a contact switch plug is installed on the lock hook block, the contact switch plug is adapted to the lock contact socket installed on the door head of the floor door, and the contact switch plug is located above the moving door ball and the fixed door ball; thereby realizing the conduction and disconnection of the elevator safety circuit.

[0010] Preferably, the triangular lock includes a lock body, a rocker arm and a reset spring, the lock body is mounted on the door frame, the reset spring is mounted on the rocker arm, and the reset end of the reset spring is in conflict with the door frame, the rocker arm is mounted on the lock body, and a ramp block is provided on the rocker arm, and the rocker arm is rotated so that the ramp block collides with the unlocking ball and unlocks the door; through the arrangement of the above structure, the triangular lock can be unlocked with the unlocking ball through the rocker arm, and the structure is simple and the unlocking is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the elevator floor door lock of the utility model.

[0012] Figure 2 It is a schematic diagram of the exploded structure of the door lock mechanism of the utility model.

[0013] Figure 3 It is a structural schematic diagram of the locking state of the door lock mechanism of the utility model.

[0014] Figure 4 It is a schematic structural diagram of the door lock mechanism of the utility model in the unlocking state.

[0015] Figure 5 It is a structural schematic diagram of a landing door head of the utility model in a locked state.

[0016] Figure 6 It is a structural schematic diagram of a landing door head of the utility model in an unlocked state.

[0017] Figure 7 It is a structural schematic diagram of the triangular lock of the utility model in a non-unlocking state.

[0018] Figure 8 It is a schematic structural diagram of the unlocked state of the triangular lock of the utility model.

[0019] The numbers in the accompanying drawings are respectively: 1. Door frame; 2. Landing door head; 3. Door hanging plate; 4. Fixed lock hook; 5. Door lock mechanism; 6. Triangular lock; 7. Contact switch plug; 8. Lock contact socket; 9. Limit hole; 41. Lock hole; 51. Lock hook block; 52. Moving door ball; 53. Fixed door ball; 54. Lock bottom plate; 55. Lock shaft; 56. Door knife arm; 57. Lock hook; 58. Limit shaft; 59. Unlocking ball; 61. Lock body; 62. Rocker arm; 63. Return spring; 64. Inclined block; 91. Upper limit end; 92. Lower limit end. DETAILED DESCRIPTION

[0020] The utility model will be described in detail below in conjunction with the accompanying drawings: Figures 1 to 8 As shown, the utility model includes a landing door head 2, a door hanging plate 3 and a door frame 1, the door frame 1 is fixed to the back of the landing door head 2, the door hanging plate 3 is movably hung on the front of the landing door head 2, a fixed lock hook 4 is provided on the landing door head 2, and the fixed lock hook 4 is close to the side of the door frame 1; a door lock mechanism 5 is installed on the door hanging plate 3, the opening and closing of the door lock mechanism 5 are adapted to the lock hole 41 provided on the fixed lock hook 4, and the locking and unlocking between the door hanging plate 3 and the landing door head 2 are realized; a triangular lock 6 is installed on the door frame 1, and the toggling of the triangular lock 6 enables the unlocking end of the triangular lock 6 to be unlocked with the unlocking end of the door lock mechanism 5.

[0021] The door lock mechanism 5 includes a lock hook block 51, a moving door ball 52, a fixed door ball 53 and a lock bottom plate 54. The lock bottom plate 54 is fixed on the door hanging plate 3. The moving door ball 52 and the fixed door ball 53 are respectively installed on one end of the lock hook block 51, and the fixed door ball 53 is connected to the lock shaft 55 provided on the lock bottom plate 54. The moving door ball 52 and the fixed door ball 53 are obliquely distributed along the lock hook block 51, and the moving door ball 52 and the fixed door ball 53 are respectively distributed in a one-to-one correspondence with the door blade arm 56; the other end of the lock hook block 51 is provided with a lock hook 57 adapted to the lock hole 41. The two door blade arms 56 are opened and closed in opposite directions, and one door blade arm 56 can push the moving door ball 52, and the other door blade arm 56 can push the fixed door ball 53.

[0022] A limit shaft 58 is installed on the lock hook block 51 , an unlocking ball 59 is installed on one end of the limit shaft 58 , and a limit hole 9 is provided on the lock bottom plate 54 matched with the unlocking ball 59 .

[0023] The limit hole 9 is a runway-type structure and is divided into an upper limit end 91 and a lower limit end 92. When the door lock mechanism 5 is locked with the floor door head 2, the unlocking ball 59 on the limit shaft 58 abuts against the lower limit end 92 of the limit hole 9. When the door lock mechanism 5 is unlocked with the floor door head 2, the unlocking ball 59 on the limit shaft 58 abuts against the upper limit end 91 of the limit hole 9.

[0024] A contact switch plug 7 is installed on the lock hook block 51 . The contact switch plug 7 is matched with a lock contact socket 8 installed on the landing door head 2 . The contact switch plug 7 is located above the moving door ball 52 and the fixed door ball 53 .

[0025] The triangular lock 6 includes a lock body 61, a rocker arm 62 and a reset spring 63. The lock body 61 is mounted on the door frame 1. The reset spring 63 is mounted on the rocker arm 62, and the reset end of the reset spring 63 is in contact with the door frame 1. The rocker arm 62 is mounted on the lock body 61, and a ramp block 64 is provided on the rocker arm 62. The rotation of the rocker arm 62 makes the ramp block 64 collide with the unlocking ball 59 and unlocking is achieved.

[0026] like Figure 3 , 5 As shown, when the two door knife arms 56 are opened by rotating the telescopic mechanism, since the weight of the left part of the lock hook block 51 on the lock shaft 55 is greater than the weight of the right part, it rotates counterclockwise due to gravity until the unlocking ball 59 of the limit shaft 58 on the lock hook block 51 contacts the lower limit end 92 on the lock base plate 54 and stops rotating. At this time, the lock hook 57 of the lock hook block 51 is inserted into the lock hole 41 of the fixed lock hook 4, thereby locking and fixing the door head 2 and the door hanging plate 3 of the floor door.

[0027] like Figure 4 , 6As shown, when the two door blade arms 56 are closed, one door blade arm 56 resists the moving door ball 52. Due to the position of the moving door ball 52 relative to the lock shaft 55, the moving door ball 52 can be pushed to rotate the lock hook block 51 in the clockwise direction, and the lock hook 57 of the lock hook block 51 is separated from the lock hole 41 of the fixed lock hook 4, so that the door head 2 and the door hanging plate 3 are in the unlocked state. One door blade arm 56 resists the moving door ball 52 and pushes until the unlocking ball 59 of the limit shaft 58 on the lock hook block 51 contacts the upper limit end 91 on the lock bottom plate 54. At this time, the other door blade arm 56 just contacts the fixed door ball 53.

[0028] like Figure 7 As shown, when the triangular lock is in the non-unlocked state, the reset spring 63 makes the triangular lock 6 rotate clockwise to the limit position. At this time, the rocker arm 62 is located in the door frame 1 and maintains a sufficient distance from the unlocking ball 59 on the door lock mechanism 5, so as not to affect the normal opening and closing of the floor door and the opening of the door lock.

[0029] like Figure 8 As shown, when the triangular lock is in the unlocked state, the triangular lock 6 is turned by a special tool triangular key to overcome the force of the return spring 63, so that the triangular lock rotates counterclockwise, and the inclined block 64 of the swing rod 62 hits the unlocking ball 59, lifts the unlocking ball 59, and drives the lock hook block 51 to rotate to achieve unlocking. When the force to overcome the return spring 63 is stopped, the return spring 63 causes the triangular lock to rotate clockwise until it is in the limited state. At this time, the swing rod 62 returns to the door frame 1, which does not affect the normal opening of the door lock.

[0030] The present invention is not limited to the above-mentioned embodiments. Regardless of any changes in shape or material composition, any structural design provided by the present invention is a variation of the present invention and should be considered within the protection scope of the present invention.

Claims

1. An elevator door lock, comprising a door head (2), a door hanging plate (3) and a door frame (1), wherein the door frame (1) is fixed to the back of the door head (2), and the door hanging plate (3) is movably hung on the front of the door head (2), characterized in that: The landing door head (2) is provided with a fixed lock hook (4), and the fixed lock hook (4) is close to the door frame (1); the door hanging plate (3) is provided with a door lock mechanism (5), the opening and closing of the door lock mechanism (5) are adapted to the lock hole (41) provided on the fixed lock hook (4), and the locking and unlocking between the door hanging plate (3) and the landing door head (2) are realized; the door frame (1) is provided with a triangular lock (6), and the toggling of the triangular lock (6) enables the unlocking end of the triangular lock (6) and the unlocking end of the door lock mechanism (5) to be unlocked.

2. The elevator door lock according to claim 1, characterized in that: The door lock mechanism (5) comprises a lock hook block (51), a moving door ball (52), a fixed door ball (53) and a lock bottom plate (54); the lock bottom plate (54) is fixed on the door hanging plate (3); the moving door ball (52) and the fixed door ball (53) are respectively mounted on one end of the lock hook block (51); the fixed door ball (53) is connected to a lock shaft (55) provided on the lock bottom plate (54); the moving door ball (52) and the fixed door ball (53) are obliquely distributed along the lock hook block (51); and the moving door ball (52) and the fixed door ball (53) are respectively distributed in a one-to-one correspondence with the door blade arm (56); and a lock hook (57) adapted to the lock hole (41) is provided on the other end of the lock hook block (51).

3. The elevator door lock according to claim 2, characterized in that: A limiting shaft (58) is installed on the lock hook block (51), an unlocking ball (59) is installed on one end of the limiting shaft (58), and a limiting hole (9) is provided on the lock bottom plate (54) matched with the unlocking ball (59).

4. The elevator door lock according to claim 3, characterized in that: The limiting hole (9) is a runway-type structure and is divided into an upper limiting end (91) and a lower limiting end (92). When the door lock mechanism (5) is locked with the door head (2) of the landing door, the unlocking ball (59) on the limiting shaft (58) abuts against the lower limiting end (92) of the limiting hole (9); when the door lock mechanism (5) is unlocked with the door head (2) of the landing door, the unlocking ball (59) on the limiting shaft (58) abuts against the upper limiting end (91) of the limiting hole (9).

5. The elevator door lock according to claim 2, characterized in that: A contact switch plug (7) is installed on the lock hook block (51), and the contact switch plug (7) is compatible with a lock contact socket (8) installed on the landing door head (2), and the contact switch plug (7) is located above the moving door ball (52) and the fixed door ball (53).

6. The elevator floor door lock according to claim 3, characterized in that: The triangular lock (6) comprises a lock body (61), a swing rod (62) and a return spring (63); the lock body (61) is mounted on the door frame (1); the return spring (63) is mounted on the swing rod (62), and the return end of the return spring (63) contacts the door frame (1); the swing rod (62) is mounted on the lock body (61), and a slope block (64) is provided on the swing rod (62); the slope block (64) collides with the unlocking ball (59) through the rotation of the swing rod (62) to achieve unlocking.

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