Triangular lock structure

Abstract

The utility model discloses a triangulation lock structure which comprises a lock body, a lock cylinder, a torsion spring, an unlocking piece and a fixing seat, one end of the lock body is fixedly connected with the fixing seat, a cavity is formed in the lock body, the lock cylinder penetrates through the cavity, the end, away from the fixing seat, of the lock cylinder is fixedly connected with the unlocking piece, and the torsion spring is fixedly connected with the unlocking piece. The torsional spring is arranged on the outer wall of the lock body in a sleeving mode, one end of the torsional spring is connected with the fixing base, the other end of the torsional spring is connected with the unlocking piece, and the torsional spring is located between the unlocking piece and the fixing base. According to the triangular lock structure, the two ends of the torsional spring are connected with the fixing base and the unlocking piece respectively, the torsional spring is located between the unlocking piece and the fixing base, it is guaranteed that the torsional spring cannot fall off in the using process of the triangular lock, and therefore it is guaranteed that the triangular lock is in an effective state all the time.

Description

Technical Field

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

[0002] When an elevator breaks down and needs repair or rescue, maintenance personnel need to open the landing door from outside with a triangular key and enter the elevator shaft for repair or rescue. The torsion spring in the existing triangular lock structure is sleeved on the unlocking part. During the use of the triangular lock, the torsion spring is easy to separate from the lock part, causing the triangular lock to fail, resulting in the maintenance personnel being unable to open the landing door for repair or rescue. Utility Model Content

[0003] In view of this, in order to overcome the defects of the prior art, the utility model provides an improved triangular lock structure to ensure that the torsion spring will not fall off during use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A triangular lock structure comprises a lock body, a lock core, a torsion spring, an unlocking piece and a fixed seat, wherein one end of the lock body is fixedly connected to the fixed seat, the lock body has a cavity inside, the lock core passes through the cavity, one end of the lock core away from the fixed seat is fixedly connected to the unlocking piece, the torsion spring is sleeved on the outer wall of the lock body, one end of the torsion spring is connected to the fixed seat, the other end of the torsion spring is connected to the unlocking piece, and the torsion spring is located between the unlocking piece and the fixed seat.

[0006] According to a preferred implementation aspect of the utility model, the fixing seat includes a first fixing plate and a second fixing plate fixedly connected to the first fixing plate, the first fixing plate is perpendicular to the second fixing plate, and the height direction of the first fixing plate is perpendicular to the length direction of the lock core.

[0007] According to a preferred implementation aspect of the utility model, the first fixing plate is provided with a first through hole penetrating through the thickness direction thereof; the second fixing plate is provided with a through slot from one side away from the first fixing plate to the other side thereof, the length direction of the through slot is parallel to the length direction of the lock core, and an extension plate is provided on the side of the second fixing plate away from the first fixing plate. The extension plate is provided to limit the rotation of the unlocking member, to ensure that after the landing door is unlocked, in the case of keyless unlocking, the lock core can be reversely rotated back to its original position under the action of the torsion spring and in place, to avoid excessive reverse rotation of the unlocking member.

[0008] According to a preferred implementation aspect of the utility model, the top surface of the extension plate is flush with the top surface of the first fixing plate, a gap is formed between one side of the extension plate and one side of the adjacent second fixing plate, and the distance from one end of the extension plate away from the first fixing plate to the first fixing plate is greater than the distance from the unlocking member to the first fixing plate. The gap is provided to ensure that the extension plate does not affect the rotation of the unlocking member during the locking and unlocking process.

[0009] According to a preferred implementation aspect of the utility model, the second fixing plate is located on a side of the first fixing plate close to the torsion spring.

[0010] According to a preferred implementation aspect of the utility model, the unlocking member is provided with a second through hole extending through the thickness direction thereof, one end of the torsion spring is clamped in the through groove of the second fixing plate, and the other end of the torsion spring is clamped in the second through hole.

[0011] According to a preferred implementation aspect of the utility model, the lock body includes a first part and a second part, the second part is fixedly arranged at an end of the first part away from the unlocking member, and the outer diameter of the second part is larger than the outer diameter of an end of the first part close to the second part.

[0012] According to a preferred implementation aspect of the utility model, the first through hole is used for the first part to pass through the first fixing plate, the diameter of the first through hole is larger than the outer diameter of one end of the first part close to the second part, and the outer diameter of the second part is larger than the diameter of the first through hole.

[0013] According to a preferred implementation aspect of the utility model, a washer is provided between the first part and the first fixing plate, the washer is sleeved on the outer wall of one end of the first part close to the second part, a locking member is provided between the first fixing plate and one end of the torsion spring away from the unlocking member, the locking member is used to fix the lock body to the first fixing plate. Since the triangular lock is fixedly connected to the floor door of the elevator, the provision of the washer can protect the floor door and avoid mutual friction between the lock body and the floor door.

[0014] According to a preferred implementation aspect of the utility model, the lock core includes a column, a boss and a blocking member, the boss is close to the second part, the cavity is used to accommodate the boss and part of the column, and the blocking member is in contact with the end of the first part away from the second part; the outer wall of the column is provided with a groove along its circumference, and the blocking member is clamped in the groove. The blocking member is provided to limit the forward and backward movement of the lock core in the cavity of the lock body.

[0015] Preferably, the triangular lock structure of the utility model further comprises an unlocking rope, one end of which is connected to one end of the unlocking member, and the other end of the unlocking rope is fixedly connected to the lock hook of the landing door.

[0016] Compared with the prior art, the utility model is advantageous in that: a triangular lock structure of the utility model connects the two ends of a torsion spring to a fixing seat and an unlocking piece respectively, and the torsion spring is located between the unlocking piece and the fixing seat, thereby ensuring that the torsion spring will not fall off during use of the triangular lock, thereby ensuring that the triangular lock is always in an effective state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a triangular lock structure in a preferred embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the triangular lock structure in the preferred embodiment of the utility model;

[0020] Figure 3 An exploded view of the triangular lock structure in the preferred embodiment of the utility model;

[0021] Wherein, the accompanying drawings are marked as follows:

[0022] Lock body-1, first part-11, second part-12, lock core-2, column-21, groove-211, boss-22, blocking member-23, torsion spring-3, unlocking member-4, second through hole-41, third through hole-42, fourth through hole-43, first nut-44, second nut-45, screw-46, fixing seat-5, first fixing plate-51, first through hole-511, second fixing plate-52, through groove-521, extension plate-53, notch-54, unlocking rope-6, washer-7, locking member-8. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] See also Figures 1 to 3A triangular lock structure of this embodiment is installed on the elevator floor door, which includes a lock body 1, a lock core 2, a torsion spring 3, an unlocking member 4, a fixing seat 5 and an unlocking rope 6.

[0025] Furthermore, if Figure 3 As shown, the lock body 1 has a cavity for the lock core 2 to pass through, and the lock body 1 includes a first part 11 and a second part 12. The second part 12 is fixedly arranged at one end of the first part 11 away from the unlocking member 4. The outer diameter of the second part 12 is larger than the outer diameter of the end of the first part 11 close to the second part 12. The torsion spring 3 is sleeved on the outer wall of the first part 11 of the lock body 1. In this embodiment, the outer wall of the first part 11 is provided with an external thread. In order to clearly show the three-dimensional structure of the lock body 1, the external thread of the outer wall of the first part 11 of the lock body 1 is not shown. In addition, a lock core cover is provided inside the end of the first part 11 close to the second part 12 to protect the lock core 2 from malfunctioning.

[0026] Furthermore, if Figures 1 to 3 As shown, the fixing seat 5 includes a first fixing plate 51 and a second fixing plate 52 fixedly connected to the first fixing plate 51. An extension plate 53 is arranged on the side of the second fixing plate 52 away from the first fixing plate 51. The second fixing plate 52 is located on the side of the first fixing plate 51 close to the torsion spring 3. The first fixing plate 51 is perpendicular to the second fixing plate 52, and the height direction of the first fixing plate 51 is perpendicular to the length direction of the lock core 2. The top surface of the extension plate 53 is flush with the top surface of the first fixing plate 51. The distance from one end of the extension plate 53 away from the first fixing plate 51 to the first fixing plate 51 is greater than the distance from the unlocking member 4 to the first fixing plate 51, so as to limit the rotation of the unlocking member 4, and ensure that after the landing door is unlocked, in the case of keyless unlocking, the lock core 2 can be reversely rotated back to its original position and in place under the action of the torsion spring 3, so as to avoid excessive reverse rotation of the unlocking member 4. At the same time, in order to prevent the extension plate 53 from affecting the rotation of the unlocking member 4 during the locking and unlocking process, a gap 54 is formed between one side of the extension plate 53 and one side of the adjacent second fixing plate 52.

[0027] Specifically, the first fixing plate 51 is provided with a first through hole 511 that runs through the thickness direction thereof. The first through hole 511 is used for the first part 11 to pass through the first fixing plate 51. The diameter of the first through hole 511 is greater than the outer diameter of the end of the first part 11 close to the second part 12, and the outer diameter of the second part 12 is greater than the diameter of the first through hole 511. A gasket 7 is arranged between the first part 11 and the first fixing plate 51. The gasket 7 is sleeved on the outer wall of the end of the first part 11 close to the second part 12 to protect the door. A locking member 8 is arranged between the first fixing plate 51 and the end of the torsion spring 3 away from the unlocking member 4. The first part 11 of the lock body 1 and the first fixing plate 51 of the fixing seat 5 are fixedly connected by the locking member 8. The torsion spring 3 is located between the locking member 8 and the unlocking member 4 and is in a compressed state. In this embodiment, the locking member 8 is preferably a nut, and the internal thread of the nut cooperates with the external thread on the outer wall of the first part 11, so that the lock body 1 is fixedly connected to the fixing seat 5. The material of the gasket 7 in this embodiment is preferably rubber.

[0028] The second fixing plate 52 is provided with a through slot 521 extending from one side away from the first fixing plate 51 to the other side. The length direction of the through slot 521 is parallel to the length direction of the lock core 2 . One end of the torsion spring 3 close to the fixing seat 5 is clamped in the through slot 521 of the second fixing plate 52 .

[0029] Furthermore, if Figure 3 As shown, the lock core 2 includes a column 21, a boss 22 and a blocking member 23. The outer wall of the column 21 is also provided with an external thread. In order to clearly show the three-dimensional structure of the lock core 2, the external thread on the outer wall of the column 21 of the lock core 2 is not shown; the boss 22 is close to the second part 12 of the lock body 1, and the cavity of the lock body 1 is used to accommodate the boss 22 and part of the column 21, and the lock core cover at one end of the first part 11 cooperates with the boss 22 of the lock core 2, and the lock core cover can limit the boss 22. The outer wall of the column 21 is provided with a groove 211 along its circumference, and the blocking member 23 is clamped at the groove 211 and the blocking member 23 is in contact with the end of the first part 11 away from the second part 12, so as to limit the forward and backward movement of the lock core 2 in the cavity of the lock body 1.

[0030] Furthermore, if Figure 1 and Figure 3 As shown, the unlocking member 4 is provided with a second through hole 41, a third through hole 42 and a fourth through hole 43 which extend through the thickness direction thereof, and the end of the torsion spring 3 away from the through groove 521 is clamped in the second through hole 41; the cross-sectional shape of the third through hole 42 is the same as the cross-sectional shape of the end of the column 21 away from the boss 22, and the third through hole 42 is used for allowing the end of the column 21 away from the boss 22 to pass through the unlocking member 4, and then the column 21 of the lock core 2 is fixedly connected to the unlocking member 4 through the first nut 44.

[0031] The fourth through hole 43 is used for the screw 46 fixing the unlocking rope 6 to pass through the unlocking member 4. Specifically, one end of the screw 46 is provided with a mounting hole for passing one end of the unlocking rope 6 along its radial direction. After one end of the unlocking rope 6 passes through the mounting hole on the screw 46, the other end of the screw 46 passes through the fourth through hole 43, and then the screw 46 is fixedly connected to the unlocking member 4 through the second nut 45, thereby ensuring that the unlocking rope 6 is tightly fixed between one end of the screw 46 and one side of the unlocking member 4. The other end of the unlocking rope 6 is fixedly connected to the lock hook of the elevator landing door. When the lock core 2 rotates under the external force of the key, it can drive the unlocking member 4 to rotate, thereby pulling the unlocking rope 6 to achieve the unlocking action of the landing door.

[0032] In this embodiment, the working principle of the triangular lock structure is as follows:

[0033] The staff stands outside the hall, inserts the key into the lock core 2, and rotates the lock core 2. The lock core 2 rotates a certain angle in the cavity of the lock body 1 and overcomes the rotation resistance of the torsion spring 3 to drive the unlocking member 4 to rotate, thereby pulling the unlocking rope 6 to move, thereby unlocking the landing door. When the key is pulled out, the lock core 2 rotates in the reverse direction under the action of the resilience of the torsion spring 3, driving the unlocking member 4 to rotate in the reverse direction until the unlocking member 4 touches the extension plate 53 on the fixing seat 5, thereby returning the unlocking member 4 to its original position, thereby locking the landing door.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A triangular lock structure, characterized in that: It includes a lock body, a lock core, a torsion spring, an unlocking piece and a fixed seat, one end of the lock body is fixedly connected to the fixed seat, the lock body has a cavity inside, the lock core passes through the cavity, one end of the lock core away from the fixed seat is fixedly connected to the unlocking piece, the torsion spring is sleeved on the outer wall of the lock body, one end of the torsion spring is connected to the fixed seat, the other end of the torsion spring is connected to the unlocking piece, and the torsion spring is located between the unlocking piece and the fixed seat.

2. The triangular lock structure according to claim 1, characterized in that: The fixing seat includes a first fixing plate and a second fixing plate fixedly connected to the first fixing plate, the first fixing plate is perpendicular to the second fixing plate, and the height direction of the first fixing plate is perpendicular to the length direction of the lock core.

3. The triangular lock structure according to claim 2, characterized in that: The first fixing plate is provided with a first through hole extending through the thickness direction thereof; the second fixing plate is provided with a through groove extending from one side away from the first fixing plate to the other side thereof, the length direction of the through groove is parallel to the length direction of the lock core, and an extension plate is provided on the side of the second fixing plate away from the first fixing plate.

4. The triangular lock structure according to claim 3, characterized in that: The top surface of the extension plate is flush with the top surface of the first fixed plate, a gap is formed between one side of the extension plate and one side of the adjacent second fixed plate, and the distance from one end of the extension plate away from the first fixed plate to the first fixed plate is greater than the distance from the unlocking piece to the first fixed plate.

5. The triangular lock structure according to claim 3, characterized in that: The second fixing plate is located on a side of the first fixing plate close to the torsion spring.

6. The triangular lock structure according to claim 3, characterized in that: The unlocking member is provided with a second through hole penetrating in the thickness direction thereof, one end of the torsion spring is clamped in the through groove of the second fixing plate, and the other end of the torsion spring is clamped in the second through hole.

7. The triangular lock structure according to claim 3, characterized in that: The lock body comprises a first part and a second part, wherein the second part is fixedly arranged at an end of the first part away from the unlocking member, and an outer diameter of the second part is larger than an outer diameter of an end of the first part close to the second part.

8. The triangular lock structure according to claim 7, characterized in that: The first through hole is used for the first part to pass through the first fixing plate. The diameter of the first through hole is larger than the outer diameter of one end of the first part close to the second part. The outer diameter of the second part is larger than the diameter of the first through hole.

9. The triangular lock structure according to claim 8, characterized in that: A gasket is arranged between the first part and the first fixed plate, and the gasket is sleeved on the outer wall of one end of the first part close to the second part. A locking member is arranged between the first fixed plate and one end of the torsion spring away from the unlocking member, and the locking member is used to fix the lock body and the first fixed plate.

10. The triangular lock structure according to claim 7, characterized in that: The lock core includes a column, a boss and a blocking member, the boss is close to the second part, the cavity is used to accommodate the boss and part of the column, and the blocking member is in contact with an end of the first part away from the second part; the outer wall of the column is provided with a groove along its circumference, and the blocking member is clamped in the groove.

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