Unlocking mechanism

Abstract

The utility model provides an unlocking mechanism, and belongs to the technical field of railway vehicle doors. The unlocking mechanism comprises a mounting seat and a shaft sleeve fixed on the mounting seat, the shaft sleeve is sleeved with a rotating unlocking disc, a shifting rod and a switch touch block which are used for controlling a lock mechanism switch are fixed on the outer side of the unlocking disc, a contact switch matched with the switch touch block is fixed on the mounting seat, a solenoid assembly is arranged on the mounting seat, and the solenoid assembly is connected with the shifting rod. The solenoid assembly comprises a steel wire rope fastener fixed to the installation base, a steel wire rope penetrates through the steel wire rope fastener, the end, extending out of the steel wire rope fastener, of the steel wire rope is fixed to the outer side of the unlocking disc, a reset spring is fixed to the installation base, and the other end of the reset spring is fixed to the outer side of the unlocking disc. The device has the advantages of simple structure, convenience in installation, low maintenance cost, high reliability and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail vehicle doors, in particular to an unlocking mechanism. Background Art

[0002] Rail transit refers to a type of transportation tool or transportation system in which operating vehicles need to travel on specific tracks. Common rail transit is a railway system composed of traditional trains and standard railways, among which high-speed trains and subway trains are more common. The doors of high-speed trains and subways are uniformly controlled. However, in order to deal with emergencies, mechanical emergency unlocking devices are installed on the inside and outside of the doors, so that the doors can be opened from both inside and outside.

[0003] The existing unlocking mechanism of the vehicle door is often complex in structure and cumbersome to operate. At the same time, the signal judgment of the unlocking state is poor, accurate operation cannot be performed, and the judgment of the unlocking state cannot be clearly known. Summary of the invention

[0004] The purpose of the utility model is to provide an unlocking mechanism, which is convenient to be installed in a vehicle door, is convenient to unlock and makes the judgment of the unlocking state clearer.

[0005] The purpose of the utility model is achieved in this way:

[0006] The unlocking mechanism comprises a mounting seat and a sleeve fixed on the mounting seat, a rotating unlocking disk is sleeved on the sleeve, a lever and a switch bump block for driving the lock mechanism are respectively fixed on the outer side of the unlocking disk, a contact switch adapted to the switch bump block is fixed on the mounting seat, a screw assembly is arranged on the mounting seat, the screw assembly comprises a wire rope fastener fixed on the mounting seat, a wire rope is passed through the wire rope fastener, and an end of the wire rope extending out of the wire rope fastener is fixed to the outer side of the unlocking disk, a return spring is fixed on the mounting seat, and the other end of the return spring is fixed to the outer side of the unlocking disk, when the wire rope is pulled and the unlocking disk is driven to rotate, the lever drives the lock mechanism to open, the switch bump block contacts the contact switch and outputs an unlocking signal, and when the wire rope is released, the return spring drives the unlocking disk to reset.

[0007] The utility model is further configured such that a limiting ring is fixed on the side wall of the sleeve, and a limiting groove for the movement of the limiting ring is opened on the inner hole wall of the unlocking disk. When the wire rope is pulled, the limiting ring slides from one end of the limiting groove to the other end relative to the limiting groove.

[0008] The utility model is further configured such that a spring fixing column is fixed on the mounting seat, a spring hanging hole is opened on the unlocking disk, and two ends of the reset spring are respectively fixed in the spring fixing column and the spring hanging hole.

[0009] The present utility model is further configured such that the contact switch includes a contact support rod, an outer end of the contact support rod is hinged with a contact rod, one end of the contact rod is provided with a contact roller abutted against the switch bump, and the other end of the contact rod is provided with a contact point for signal emission.

[0010] The present utility model is further configured such that one side of the mounting base forms a mounting side edge by bending, the screw tube assembly includes more than two wire rope fasteners arranged on the mounting side edge, the wire rope fasteners are claw-shaped structures, and the wire ropes are fixed by winding and screwing with outer nuts.

[0011] The present utility model is further configured such that more than two card slots are provided on the unlocking disc, and card holes for fixing the end of the wire rope are provided on the card slots.

[0012] The present utility model is further configured such that a through hole for the dial rod to penetrate is provided on the unlocking disc, and retaining rings are sleeved on both sides of the through hole on the dial rod.

[0013] The present utility model is further configured such that a sheath is sleeved on the dial rod, and retaining rings are clamped at both ends of the sheath.

[0014] The outstanding and beneficial technical effects of the present utility model compared with the prior art are as follows:

[0015] 1. The dial rod provided by the present utility model can unlock the lock mechanism with the pulling of the wire rope, with a simple structure and convenient installation; in addition, the reset spring can achieve the effect of resetting after unlocking, and when touching the matching contact switch, it can provide timely signal feedback on the unlocking state, and the state of the lock can be obtained more clearly.

[0016] 2. The present utility model further provides a limiting groove for the limiting ring to slide within a certain range, enabling the unlocking disc to be within the normal rotation range, avoiding excessive rotation of the unlocking disc, and thus the service life of the components will be longer.

[0017] 3. The contact switch provided by the present utility model has a simple structure, convenient installation, and clear signal acquisition.

[0018] 4. The screw tube assembly provided by the present utility model includes more than two wire rope fasteners, which can provide various choices for the installation of wire ropes, and the wire rope fasteners are convenient for winding wire ropes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the present utility model in the locked state Figure 1 ;

[0020] Figure 2 is a schematic structural view of the present utility model in the unlocked state Figure 1;

[0021] Figure 3 is the structural schematic diagram of the un-unlocked state of the present utility model Figure 2 ;

[0022] Figure 4 is the structural schematic diagram of the contact switch of the present utility model not being triggered;

[0023] Figure 5 is the structural schematic diagram of the contact switch of the present utility model being triggered;

[0024] Figure 6 is the structural schematic diagram of the solenoid assembly of the present utility model;

[0025] Reference numerals:

[0026] 1 - mounting base; 10 - spring fixing post; 11 - mounting side edge; 2 - bushing; 20 - limiting ring

[0027] 3 - unlocking disc; 30 - limiting groove; 31 - spring hanging hole; 32 - card slot; 33 - through hole;

[0028] 4 - lever; 40 - sheath;

[0029] 5 - contact switch; 50 - contact support rod; 51 - contact rod; 52 - contact roller; 53 - contact point;

[0030] 6 - solenoid assembly; 60 - wire rope fastener; 61 - wire rope;

[0031] 7 - switch bumper; 8 - return spring. Detailed implementation manners

[0032] The present utility model will be further described below with reference to the accompanying drawings in specific embodiments. See Figure 1 — Figure 6 :

[0033] An unlocking mechanism comprises a mounting seat 1 and a sleeve 2 fixed on the mounting seat 1, a rotating unlocking disk 3 is sleeved on the sleeve 2, a lever 4 and a switch bumper 7 for driving the lock mechanism are respectively fixed to the outer side of the unlocking disk 3, a contact switch 5 adapted to the switch bumper 7 is fixed on the mounting seat 1, a solenoid assembly 6 is arranged on the mounting seat 1, the solenoid assembly 6 comprises a wire rope fastener 60 fixed on the mounting seat 1, a wire rope 61 is passed through the wire rope fastener 60, and the end of the wire rope 61 extending out of the wire rope fastener 60 is fixed to the outer side of the unlocking disk 3, a return spring 8 is fixed on the mounting seat 1, and the other end of the return spring 8 is fixed to the outer side of the unlocking disk 3, when the wire rope 61 is pulled and the unlocking disk 3 is driven to rotate, the lever 4 drives the lock mechanism to open, the switch bumper 7 contacts the contact switch 5 and outputs an unlocking signal, and when the wire rope 61 is released, the return spring 8 drives the unlocking disk 3 to reset.

[0034] During the implementation process, there are two situations, as follows:

[0035] like Figure 2 As shown, during the door unlocking process, the wire rope 61 is pulled to drive the unlocking plate 3 to rotate, and the lever 4 fixed on the unlocking plate is moved, so that the lock mechanism can be unlocked. The door lock mechanism is a common technology and will not be described in detail. When the unlocking plate 3 rotates, it drives the switch contact block 7 to rotate, and then touches the contact switch 5, and the unlocking signal is issued;

[0036] like Figure 1 As shown, the wire rope is loosened, and the unlocking disk 3 rotates to the initial position under the action of the reset spring 8, that is, it is reset. After the unlocking disk 3 returns to the initial position, the switch contact block 7 of the unlocking disk 3 no longer contacts the contact switch 5, and no emergency unlocking signal is issued.

[0037] With the above structural method, the unlocking signal is sent accurately and clearly, and at the same time, the structure is simple and the installation is convenient, providing safety and reliability for the vehicle door.

[0038] Preferably, a limiting ring 20 is fixed on the side wall of the sleeve 2, and a limiting groove 30 for the movement of the limiting ring 20 is opened on the inner hole wall of the unlocking disk 3. When the wire rope 61 is pulled, the limiting ring 20 slides relative to the limiting groove 30 from one end of the limiting groove 30 to the other end.

[0039] In the above structure, during the rotation of the unlocking disk 3, the limiting ring 20 will be in the limiting groove 30, so that the unlocking disk can only rotate to a certain angle, providing a quantitative rotation range for the unlocking disk 3, preventing the unlocking disk from falling off the sleeve 2, and preventing damage to the parts due to excessive rotation.

[0040] Preferably, a spring fixing column 10 is fixed on the mounting base 1, a spring hanging hole 31 is formed on the unlocking disc 3, and two ends of the return spring 8 are respectively fixed in the spring fixing column 10 and the spring hanging hole 31. The ends of the return spring can be well fixed, so as to ensure a good reset effect.

[0041] Preferably, the contact switch 5 includes a contact support rod 50, a contact rod 51 is hinged to the outer end of the contact support rod 50, a contact roller 52 for abutting against the switch bump 7 is arranged at one end of the contact rod 51, and a contact point 53 for signal emission is arranged at the other end of the contact rod 51.

[0042] In the above structure, one side of the contact switch is hinged. When the contact roller 52 is touched, the contact point at the other end will be displaced to generate a signal. The generation of this signal is only in the state of existence or non-existence, which is accurate and clear for the user to obtain the signal and is easy to judge the state of the door lock.

[0043] Preferably, one side of the mounting base 1 forms a mounting side edge 11 by bending. The screw tube assembly 6 includes more than two wire rope fasteners 60 arranged on the mounting side edge 11. The wire rope fasteners 60 are claw-shaped structures, and the wire rope 61 is fixed by winding and screwing with an external nut.

[0044] In the implementation process, the installation position of the wire rope 61 can be selected according to requirements, and it has a wide installation application range; at the same time, the fixing of the end part is simple in operation and has a remarkable fixing effect.

[0045] Preferably, more than two card slots 32 are formed on the unlocking disc 3, and card holes for fixing the end part of the wire rope 61 are formed in the card slots 32. The use of more than two card slots 32 also provides a fixing position selection for the other end part of the wire rope.

[0046] Preferably, a through hole 33 for the dial rod 4 to pass through is formed on the unlocking disc 3, and retaining rings are sleeved on both sides of the through hole 33 on the dial rod 4.

[0047] Preferably, a sheath 40 is sleeved on the dial rod 4, and retaining rings are clamped at both ends of the sheath 40.

[0048] In addition, a self-lubricating bushing is arranged between the unlocking disc and the bushing, which can provide the functions of reducing rotational friction and extending service life between the two.

[0049] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An unlocking mechanism, characterized in that, The invention comprises a mounting seat (1) and a shaft sleeve (2) fixed on the mounting seat (1); a rotatable unlocking disk (3) is sleeved on the shaft sleeve (2); a lever (4) for driving a locking mechanism and a switch bumper (7) are respectively fixed on the outer side of the unlocking disk (3); a contact switch (5) adapted to the switch bumper (7) is fixed on the mounting seat (1); a solenoid assembly (6) is arranged on the mounting seat (1); the solenoid assembly (6) comprises a steel wire rope fastener (60) fixed on the mounting seat (1); a steel wire rope is inserted into the steel wire rope fastener (60) (61), and the end of the steel wire rope (61) extending out of the steel wire rope fastener (60) is fixed to the outer side of the unlocking disk (3), a return spring (8) is fixed on the mounting seat (1), and the other end of the return spring (8) is fixed to the outer side of the unlocking disk (3), when the steel wire rope (61) is pulled and the unlocking disk (3) is driven to rotate, the lever (4) drives the lock mechanism to open, the switch contact block (7) contacts the contact switch (5) and outputs an unlocking signal, and when the steel wire rope (61) is released, the return spring (8) drives the unlocking disk (3) to reset.

2. An unlocking mechanism according to claim 1, characterized in that, A limiting ring (20) is fixed on the side wall of the shaft sleeve (2), and a limiting groove (30) for the movement of the limiting ring (20) is provided on the inner hole wall of the unlocking disk (3). When the steel wire rope (61) is pulled, the limiting ring (20) slides relative to the limiting groove (30) from one end of the limiting groove (30) to the other end.

3. The unlocking mechanism according to claim 1, characterized in that, A spring fixing column (10) is fixed on the mounting seat (1), a spring hanging hole (31) is provided on the unlocking disk (3), and two ends of the reset spring (8) are respectively fixed in the spring fixing column (10) and the spring hanging hole (31).

4. An unlocking mechanism according to claim 1, characterized in that, The contact switch (5) comprises a contact support rod (50), the outer end of which is hingedly connected to a contact rod (51), one end of which is provided with a contact roller (52) abutting against the switch contact block (7), and the other end of which is provided with a contact point (53) for sending a signal.

5. An unlocking mechanism according to claim 1, characterized in that, One side of the mounting seat (1) is bent to form a mounting side edge (11), and the screw tube assembly (6) includes more than two wire rope fasteners (60) arranged on the mounting side edge (11), the wire rope fasteners (60) are claw-shaped structures, and the wire rope (61) is fixed by winding and screwing with an external nut.

6. The unlocking mechanism according to claim 1 or 5, characterized in that, The unlocking disk (3) is provided with more than two clamping slots (32), and the clamping slots (32) are provided with clamping holes for fixing the ends of the steel wire rope (61).

7. An unlocking mechanism according to claim 1, characterized in that, The unlocking disk (3) is provided with a through hole (33) for the lever (4) to pass through, and the lever (4) is sleeved with retaining rings located on both sides of the through hole (33).

8. An unlocking mechanism according to claim 1 or 7, characterized in that, The lever (4) is sleeved with a protective sleeve (40), and retaining rings are clamped at both ends of the protective sleeve (40).

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