Anti-back-locking escape door lock for rail transit

Abstract

The anti-back-locking escape door lock for the rail transit comprises a lock body and a lock head, the lock head comprises a lock head shell part, a lock cylinder assembly, a lock head shifting piece, a steel ball spring and a steel ball, the lock head shell part is connected with the lock body, and the end, facing the lock body, of the lock cylinder assembly sequentially penetrates through the lock head shell part and the lock head shifting piece. The end, away from the lock body, of the lock cylinder assembly extends out of the lock body, the lock head poking piece is connected with the lock cylinder assembly and rotates along with rotation of the lock cylinder assembly, an inner cavity is formed in the lock head shell component, one end of the steel ball spring is connected with the top of the inner cavity, and the other end of the steel ball spring is connected with the steel ball. The inner cavity is formed in the lock head body, the steel ball and the steel ball spring are movably arranged in the inner cavity, and the steel ball groove is formed in the surface of the lock cylinder, so that the lock cylinder can only rotate in one direction when rotating, and when the lock cylinder rotates in the opposite direction, the steel ball is clamped in the steel ball groove to prevent the lock cylinder from being reversely locked, and the escape door does not have the reverse-direction reverse locking function; therefore, the escape door is prevented from being locked in emergency to delay escape time, and personal injury is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit locks, in particular to an anti-reverse-locking escape door lock for rail transit. Background Art

[0002] Escape locks are mainly used on emergency exit doors in public places with large traffic such as large supermarkets, shopping malls, office buildings, hospitals, schools, and factory buildings. They prevent outsiders from entering without permission and enable internal personnel to escape safely in emergency situations such as fire.

[0003] Patent document CN214753490U discloses a child-proof anti-locking knob, comprising a cover plate, a rotating disk is sleeved inside the cover plate, and a mounting sleeve is provided on one side of the cover plate; an anti-reverse locking mechanism, the anti-reverse locking mechanism comprises a rotating button and a protective pad, the rotating button is fixedly connected to one side of the rotating disk, a clamping rod is fixedly connected to one side of the rotating disk, a clamping piece is fixedly connected to the surface of the clamping rod, a rotating ring is sleeved inside the rotating disk, a locking piece is fixedly connected to one side of the rotating ring, an engaging groove is provided inside the rotating ring, and the engaging piece and the engaging groove are mutually engaged. The utility model is provided with a clamping rod, a rotating ring, an engaging groove and a spring, so that the device can be better rotated between devices during use, and at the same time, the device can achieve the function of preventing accidental touch when the device is in use, which greatly increases the practicality of the device when in use.

[0004] In the above scheme, the anti-locking knob can largely achieve the function of preventing accidental touch, but it still has an anti-locking function. In an emergency, the escape door will be locked, which will delay the escape time and cause personal injury. Therefore, it is necessary to provide an anti-reverse locking escape door lock for rail transit to solve the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and provide an anti-reverse locking escape door lock for rail transit.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The invention relates to an anti-reverse locking escape door lock for rail transit, comprising a lock body and a lock head, wherein the lock head comprises a lock head shell component, a lock core assembly, a lock head paddle, a steel ball spring and a steel ball, the lock head shell component is connected to the lock body, one end of the lock core assembly facing the lock body sequentially passes through the lock head shell component and the lock head paddle, the end of the lock core assembly away from the lock body extends to the outside of the lock body, the lock head paddle is connected to the lock core assembly and rotates with the rotation of the lock core assembly, an inner cavity is provided in the lock head shell component, one end of the steel ball spring is connected to the top of the inner cavity, and the other end of the steel ball spring is connected to the steel ball, the steel ball abuts against the lock core assembly so that the lock core assembly can only rotate in one direction, thereby preventing the escape door from being reversely locked.

[0008] The utility model is further configured that the lock housing component includes:

[0009] The lock body is arranged in the lock body, the lock body has a through slot through which the lock core assembly passes, the lock body has an inner cavity through which the steel ball spring and the steel ball pass, and the through slot is perpendicular to the inner cavity;

[0010] The lock cover is buckled with an end of the lock body away from the lock body.

[0011] The utility model is further configured that the lock core assembly comprises:

[0012] The lock core is arranged in a through groove inside the lock body, and one end of the lock core facing the lock body passes through the lock body and the lock paddle in sequence, and a steel ball groove is arranged on the surface of the lock core;

[0013] A small lock core handle is located outside the lock body and is fixedly connected to one end of the lock core through a cylindrical pin.

[0014] The utility model is further configured such that the steel ball is connected to one end of a steel ball spring, the diameter of the steel ball is slightly smaller than the diameter of the inner cavity, the steel ball and the steel ball spring perform lifting and lowering displacements in the inner cavity, the steel ball falls into the steel ball groove of the lock core, and the steel ball spring relaxes; the steel ball is lifted up and abuts against the surface of the lock core, and the steel ball spring tightens.

[0015] The utility model is further configured that an inner security dial, a square tongue pull rod and a square tongue are provided in the lock body, one end of the inner security dial is located on the rotation path of the lock head paddle, the other end of the inner security paddle is connected to the square tongue pull rod, and one end of the square tongue pull rod is connected to the square tongue.

[0016] The utility model is further configured that a lock washer is provided between the lock and the door body.

[0017] In summary, the utility model has the following beneficial effects:

[0018] The utility model provides an inner cavity in the lock body, in which a steel ball and a steel ball spring are movably provided, and a steel ball groove is provided on the surface of the lock core, so that the lock core can only rotate in one direction when rotating, and when rotating in the opposite direction, the steel ball will be stuck in the steel ball groove to prevent the lock core from being reversely locked, so that the escape door does not have the reverse direction reverse locking function, so as to avoid the escape door being reversely locked in an emergency to delay the escape time and cause personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the utility model.

[0020] Figure 2 It is a right view of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the lock of the utility model.

[0022] Figure 4 It is a structural schematic diagram of a lock shell component of the utility model.

[0023] Figure 5 This utility model Figure 3 Cross-sectional view in .

[0024] Figure 6 This utility model Figure 3 Cross-sectional view of another installation orientation.

[0025] Figure 7 It is a structural schematic diagram of the lock core assembly of the utility model.

[0026] Figure 8 The utility model Figure 1 Schematic diagram of the internal structure.

[0027] In the figure, 1. lock body, 2. lock shell component, 3. lock core assembly, 4. lock paddle, 5. steel ball spring, 6. steel ball, 7. inner cavity, 8. lock body, 9. lock cover, 10. through groove, 11. lock core, 12. lock core small handle, 13. steel ball groove, 14. inner protection dial, 15. square tongue pull rod, 16. square tongue, 17. lock gasket. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0029] In this embodiment, if Figure 1-7 As shown, the utility model proposes an anti-reverse locking escape door lock for rail transit, an anti-reverse locking escape door lock for rail transit, including a lock body 1 and a lock head, the lock head includes a lock head shell component 2, a lock core assembly 3, a lock head paddle 4, a steel ball spring 5 and a steel ball 6, the lock head shell component is connected to the lock body, one end of the lock core assembly facing the lock body passes through the lock head shell component and the lock head paddle in sequence, the end of the lock core assembly away from the lock body extends to the outside of the lock body, the lock head paddle is connected to the lock core assembly and rotates with the rotation of the lock core assembly, an inner cavity 7 is provided in the lock head shell component, one end of the steel ball spring is connected to the top of the inner cavity, the other end of the steel ball spring is connected to the steel ball, the steel ball and the lock core assembly are abutted so that the lock core assembly can only rotate in one direction, thereby preventing the escape door from being reversely locked.

[0030] In this embodiment, it is further configured that the lock shell component includes a lock body 8 and a lock cover 9. The lock body is arranged in the lock body. The lock body has a through groove 10 for the lock core assembly to pass through. The lock body has an inner cavity for the steel ball spring and the steel ball to pass through, and the through groove is perpendicular to the inner cavity; the lock cover is buckled with one end of the lock body away from the lock body.

[0031] The utility model is further configured as follows: the lock core assembly includes a lock core 11 and a small lock core handle 12; the lock core is arranged in a through groove inside the lock head body; one end of the lock core facing the lock body passes through the lock head body and the lock head paddle in sequence; a steel ball groove 13 is provided on the surface of the lock core; the small lock core handle is located outside the lock body, and the small lock core handle is fixedly connected to one end of the lock core through a cylindrical pin.

[0032] In this embodiment, if Figure 5-6 As shown, the steel ball is connected to one end of the steel ball spring, the diameter of the steel ball is slightly smaller than the diameter of the inner cavity, the steel ball and the steel ball spring perform lifting and lowering displacements in the inner cavity, the steel ball falls into the steel ball groove of the lock core, and the steel ball spring relaxes; the steel ball is lifted up and contacts the surface of the lock core, and the steel ball spring tightens.

[0033] In this example, when a left-handed door is installed, the corresponding inner cavity is set at the left end of the lock body, and the steel ball falls into the steel ball groove. At this time, by rotating the lock core, it can only be rotated clockwise, the steel ball moves upward in the inner cavity, and the steel ball spring contracts. When the lock core is rotated counterclockwise, the steel ball cannot move in the inner cavity, and the lock core cannot be rotated to lock the door; when a right-handed door is installed, the corresponding inner cavity is set at the right end of the lock body, and the steel ball falls into the steel ball groove. At this time, by rotating the lock core, it can only be rotated counterclockwise, the steel ball moves upward in the inner cavity, and the steel ball spring contracts. When the lock core is rotated counterclockwise, the steel ball cannot move in the inner cavity, and the lock core cannot be rotated to lock the door.

[0034] In this embodiment, if Figure 8 As shown, the lock body is provided with an inner protection dial 14, a square tongue pull rod 15 and a square tongue 16, one end of the inner protection dial is in the rotation path of the lock head paddle, the other end of the inner protection paddle is connected to the square tongue pull rod, and one end of the square tongue pull rod is connected to the square tongue.

[0035] In this example, by turning the small handle of the lock cylinder, the lock paddle is driven to rotate. One end of the lock paddle is engaged with one end of the inner security dial during rotation, thereby driving the square tongue pull rod and square tongue connected to the other end of the inner security dial to perform telescopic movement to open and close the door.

[0036] In this embodiment, if Figure 2 As shown, a lock washer 17 is provided between the lock and the door body, and the lock washer is used to buffer and protect the connection surface between the lock and the door body to prevent the lock from loosening.

[0037] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. An anti-reverse locking escape door lock for rail transit, comprising a lock body and a lock head, characterized in that: The lock includes a lock shell component, a lock core assembly, a lock paddle, a steel ball spring and a steel ball. The lock shell component is connected to the lock body, and one end of the lock core assembly facing the lock body sequentially passes through the lock shell component and the lock paddle, and the end of the lock core assembly away from the lock body extends to the outside of the lock body. The lock paddle is connected to the lock core assembly and rotates with the rotation of the lock core assembly. An inner cavity is provided in the lock shell component, one end of the steel ball spring is connected to the top of the inner cavity, and the other end of the steel ball spring is connected to the steel ball. The steel ball and the lock core assembly are abutted so that the lock core assembly can only rotate in one direction, thereby preventing the escape door from being locked.

2. The anti-reverse locking escape door lock for rail transit according to claim 1, characterized in that: The lock shell components include: The lock body is arranged in the lock body, the lock body has a through slot through which the lock core assembly passes, the lock body has an inner cavity through which the steel ball spring and the steel ball pass, and the through slot is perpendicular to the inner cavity; The lock cover is buckled with an end of the lock body away from the lock body.

3. The anti-reverse locking escape door lock for rail transit according to claim 2, characterized in that: The lock cylinder assembly includes: The lock core is arranged in a through groove inside the lock body, and one end of the lock core facing the lock body passes through the lock body and the lock paddle in sequence, and a steel ball groove is arranged on the surface of the lock core; A small lock core handle is located outside the lock body and is fixedly connected to one end of the lock core through a cylindrical pin.

4. The anti-reverse locking escape door lock for rail transit according to claim 3, characterized in that: The steel ball is connected to one end of the steel ball spring. The diameter of the steel ball is smaller than the diameter of the inner cavity. The steel ball and the steel ball spring perform lifting and lowering displacements in the inner cavity. The steel ball falls into the steel ball groove of the lock core, and the steel ball spring relaxes; the steel ball is lifted up and contacts the surface of the lock core, and the steel ball spring tightens.

5. The anti-reverse-lock escape door lock for rail transit according to claim 1, characterized in that: An inner security dial, a square tongue pull rod and a square tongue are arranged in the lock body. One end of the inner security dial is located on the rotation path of the lock head paddle, the other end of the inner security paddle is connected to the square tongue pull rod, and one end of the square tongue pull rod is connected to the square tongue.

6. The anti-reverse-lock escape door lock for rail transit according to claim 1, characterized in that: A lock washer is arranged between the lock and the door body.

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