Triangular lock mechanism for elevator landing door

Abstract

The utility model discloses a triangle lock mechanism for an elevator landing door, which comprises a triangle lock, an in-place switch, a trigger component and a support, the support is used for connecting the triangle lock and the in-place switch, one end of the trigger component is fixedly connected with the top of the triangle lock, and the other end of the trigger component is rotatably connected with the top of the support. One end of the in-place switch is provided with a contact part, the contact part is arranged towards the triangle lock, the trigger assembly can rotate along with rotation of the triangle lock and comprises a first connecting rod, the first connecting rod is used for triggering the contact part when the triangle lock is unlocked, and the extension line of the axis of the contact part penetrates through the side wall of the first connecting rod. According to the triangular lock mechanism, in the unlocking process, the contact point of the contact part and the side wall of the first connecting rod is almost unchanged, loss of the contact part can be effectively reduced, it is guaranteed that the trigger assembly can effectively trigger the contact part so as to trigger the in-place switch to act, and it is guaranteed that the monitoring effect of the in-place switch is effective.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a triangular lock mechanism for elevator landing doors. Background Technology

[0002] As a critical component of elevators, the triangular lock on the elevator landing door is crucial for monitoring its operation. Existing monitoring devices often employ a position switch. When the triangular lock rotates to open the elevator landing door, a coaxial cam mechanism triggers the position switch, opening or closing the monitoring circuit and thus identifying the triangular lock's movement.

[0003] In existing technology, when the cam mechanism on a triangular lock triggers the position switch, the contact part of the position switch slides a certain distance on the cam surface as the cam rotates. Since the contact part of the position switch is non-metallic, while the cam mechanism is metallic, the friction generated by the sliding causes wear on the non-metallic contact part of the position switch. As the usage time increases, the wear becomes more and more severe until the contact part of the position switch is lost. This prevents the cam mechanism of the triangular lock from contacting the contact part of the position switch, thus failing to trigger the position switch and rendering the monitoring function ineffective. Utility Model Content

[0004] In view of this, in order to overcome the shortcomings of the prior art, the present invention provides an improved triangular lock mechanism for elevator landing doors.

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

[0006] A triangular lock mechanism for elevator landing doors includes a triangular lock, a stop switch, a trigger assembly, and a bracket. The bracket connects the triangular lock and the stop switch. One end of the trigger assembly is fixedly connected to the top of the triangular lock, and the other end is rotatably connected to the top of the bracket. One end of the stop switch has a contact portion facing the triangular lock. The trigger assembly rotates with the triangular lock. The trigger assembly includes a first link that triggers the contact portion when the triangular lock is unlocked. The extension of the axis of the contact portion passes through the side wall of the first link.

[0007] By setting up a trigger component and connecting its two ends to the triangular lock and the bracket respectively, and ensuring that the extension line of the axis of the contact part of the position switch always passes through the side wall of the first link of the trigger component, the rotation of the triangular lock during the unlocking process drives the rotation of the entire trigger component, thereby triggering the position switch by the first link. When the first link triggers the contact part, the sliding distance between the contact part and the side wall of the first link is significantly reduced compared to the cam mechanism in the prior art due to the structural design of the trigger component. Because of the overall structural design of the trigger component, the first link rotates continuously with the rotation of the triangular lock, so that the contact point between the contact part and the side wall of the first link remains almost unchanged during the unlocking process. This effectively reduces wear on the contact part, ensuring that the trigger component can effectively trigger the contact part to activate the position switch, thus ensuring the effective monitoring function of the position switch.

[0008] According to a preferred embodiment of the present invention, the bracket includes a first base plate, a first side plate, a second side plate, and a top plate. The first side plate and the second side plate are located on both sides of the first base plate and are both perpendicular to the first base plate. The top plate is parallel to the first base plate.

[0009] According to a preferred embodiment of the present invention, the bottom edges of the first side plate and the second side plate are both fixedly connected to the first bottom plate, one side of the top plate is fixedly connected to the top edge of the second side plate, and the top plate extends inward from the side of the second side plate near the first bottom plate.

[0010] According to a preferred embodiment of the present invention, the distance between the first side plate and the triangular lock is greater than the distance between the second side plate and the triangular lock, and the first side plate is fixedly connected to one side of the position switch.

[0011] According to a preferred embodiment of the present invention, the triangular lock includes a triangular lock body and a second base plate, the bottom surface of the triangular lock body is fixedly connected to the top surface of the second base plate, and the end of the second base plate near the positioning switch is fixedly connected to the end of the first base plate away from the positioning switch.

[0012] According to a preferred embodiment of the present invention, the first connecting rod includes a first part and a second part that are perpendicular to each other, and the side of the first part near the contact part is fixedly connected to one side of the second part.

[0013] According to a preferred embodiment of the present invention, the second part is used to trigger the contact part when the triangular lock is unlocked, and the extension line of the axis of the contact part extends through the thickness direction of the second part.

[0014] According to a preferred embodiment of this utility model, the height of the second part is greater than or equal to the vertical distance from the bottom surface of the first part to the center of the contact part, one end of the second part is flush with one end of the first part, and the length of the second part is less than the length of the first part. This arrangement allows a gap to be formed between the ends of the second part and the first part that are close to the top plate, thereby preventing the second part of the first link from rubbing against the inner wall of the second side plate and affecting the overall rotation of the trigger assembly when the rotation of the triangular lock body causes the first and second links to rotate during the unlocking process.

[0015] According to a preferred embodiment of the present invention, the triggering component further includes a driving swing rod and a second connecting rod. The first part is parallel to the second connecting rod, and the top surface of the first part is in contact with the bottom surface of the second connecting rod. One end of the driving swing rod is fixedly connected to the top of the triangular lock body. One end of the second connecting rod is rotatably connected to the other end of the driving swing rod. The other end of the second connecting rod is rotatably connected to one end of the first part. The other end of the first part is rotatably connected to the top plate.

[0016] According to a preferred embodiment of the present invention, the triangular lock body has a locked state and an unlocked state. When the triangular lock body is in the locked state, there is a gap between the outer side of the second part and the contact part. When the triangular lock body is in the unlocked state, the outer side of the second part is in contact with the contact part. The angle between the second link and the first part when the triangular lock body is in the locked state is greater than the angle between the second link and the first part when the triangular lock body is in the unlocked state.

[0017] Compared with the prior art, the advantages of this utility model are as follows: This utility model provides a triangular lock mechanism for elevator landing doors. By setting a trigger component and connecting both ends of the trigger component to the triangular lock and the bracket respectively, and ensuring that the extension line of the axis of the contact part of the positioning switch always passes through the side wall of the first connecting rod of the trigger component, the triangular lock's rotation during unlocking can drive the entire trigger component to rotate, ensuring that the first connecting rod can trigger the positioning switch. Furthermore, as the triangular lock rotates, the first connecting rod rotates continuously, so that the contact point between the contact part and the side wall of the first connecting rod remains almost unchanged during unlocking. This effectively reduces wear on the contact part, ensuring that the trigger component can effectively trigger the contact part to activate the positioning switch, thus ensuring the effective monitoring function of the positioning switch. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the triangular lock mechanism in a preferred embodiment of the present invention;

[0020] Figure 2 This is an exploded view of the triangular lock mechanism in a preferred embodiment of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the first connecting rod in a preferred embodiment of the present invention.

[0022] Figure 4 This is a top view of the triangular lock mechanism in a preferred embodiment of the present invention when the triangular lock body is in the locked state.

[0023] Figure 5 This is a top view of the triangular lock mechanism in the intermediate state of the unlocking process in a preferred embodiment of the present invention.

[0024] Figure 6 This is a top view of the triangular lock mechanism in a preferred embodiment of the present invention when the triangular lock body is in the unlocked state.

[0025] The attached figures are labeled as follows:

[0026] Triangle lock-1, Triangle lock body-11, Second base plate-12, Position switch-2, Contact part-21, Trigger assembly-3, First part-31, Second part-32, Second connecting rod-33, Drive swing rod-34, Bracket-4, First base plate-41, First side plate-42, Second side plate-43, Top plate-44. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] See Figures 1 to 6This embodiment provides a triangular lock mechanism for elevator landing doors, installed on the elevator landing door. The triangular lock mechanism includes a triangular lock 1, a stop switch 2, a trigger component 3, and a bracket 4. The bracket 4 connects the triangular lock 1 and the stop switch 2. One end of the trigger component 3 is fixedly connected to the top of the triangular lock 1, and the other end of the trigger component 3 is rotatably connected to the top of the bracket 4. The trigger component 3 can rotate with the rotation of the triangular lock 1. One end of the stop switch 2 has a contact portion 21, and the contact portion 21 is set towards the triangular lock 1 to ensure that during the unlocking process of the triangular lock 1, the trigger component 3 can gradually touch the contact portion 21 as the triangular lock 1 rotates to trigger the stop switch 2.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the triangular lock 1 includes a triangular lock body 11 and a second base plate 12. The bottom surface of the triangular lock body 11 is fixedly connected to the top surface of the second base plate 12. The contact part 21 is disposed opposite to the triangular lock body 11. By inserting the key into the interior of the triangular lock body 11 and then turning the key, the triangular lock body 11 can be rotated to unlock it.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, the bracket 4 includes a first base plate 41, a first side plate 42, a second side plate 43, and a top plate 44. The first side plate 42 and the second side plate 43 are located on both sides of the first base plate 41 and are both perpendicular to the first base plate 41. The top plate 44 is parallel to the first base plate 41. The bottom edges of the first side plate 42 and the second side plate 43 are fixedly connected to the first base plate 41. The end of the second base plate 42 near the position switch 2 is fixedly connected to the end of the first base plate 41 away from the position switch 2. One side of the top plate 44 is fixedly connected to the top edge of the second side plate 43. The top plate 44 extends inward from the side of the second side plate 43 near the first base plate 41.

[0031] The distance between the first side plate 42 and the triangular lock 1 is greater than the distance between the second side plate 43 and the triangular lock 1. This is because the first side plate 42 is used to fix the position switch 2, that is, the first side plate 42 is fixedly connected to one side of the position switch 2, and the top plate 44 above the second side plate 43 is used to fix one end of the trigger assembly 3.

[0032] Furthermore, the triggering component 3 includes a first link, a second link 33, and a drive lever 34, wherein, as... Figure 3As shown, the first link includes a first part 31 and a second part 32 that are perpendicular to each other. The side of the first part 31 near the contact part 21 is fixedly connected to one side of the second part 32. One end of the second part 32 is flush with one end of the first part 31, and the length of the second part 32 is less than the length of the first part 31. This arrangement allows a gap to be formed between the ends of the second part 32 and the first part 31 near the top plate 44, thereby preventing the second part 32 of the first link from rubbing against the inner wall of the second side plate 43 and affecting the overall rotation of the trigger assembly 3 when the rotation of the triangular lock body 11 causes the first link and the second link 33 to rotate during the unlocking process of the triangular lock 1.

[0033] Specifically, the first part 31 is parallel to the second connecting rod 33, and the top surface of the first part 31 is in contact with the bottom surface of the second connecting rod 33. One end of the driving lever 34 is fixedly connected to the top of the triangular lock body 11, one end of the second connecting rod 33 is rotatably connected to the other end of the driving lever 34, the other end of the second connecting rod 33 is rotatably connected to one end of the first part 31, and the other end of the first part 31 is rotatably connected to the top plate 44 of the bracket 4. The second part 32 is used to trigger the contact part 21 when the triangular lock 1 is unlocked, and the extension line of the axis of the contact part 21 of the position switch 2 always passes through the thickness direction of the second part 32. At the same time, the height of the second part 32 is set to be greater than or equal to the vertical distance from the bottom surface of the first part 31 to the center of the contact part 21, so as to ensure that the second part 32 of the first connecting rod can touch the contact part 21. In this embodiment, since the two ends of the trigger component 3 are rotatably connected to the triangular lock body 11 and the top plate 44 respectively, that is, both ends of the trigger component 3 are restricted, during the unlocking process of the triangular lock body 11, as the triangular lock body 11 rotates, the second link 33 and the drive swing rod 34, as well as the second link 33 and the first part 31, will rotate relative to each other to continuously change their position and angle.

[0034] In this embodiment, the triangular lock body 11 has a locked state, an unlocked state, and an intermediate state during the transition from the locked state to the unlocked state. For example... Figure 4 As shown, when the triangular lock body 11 is in the locked state, there is a gap between the outer side of the second part 32 and the contact part 21; when the operator inserts the key of the triangular lock 1 into the triangular lock body 11, as the operator turns the key, the triangular lock body 11 also rotates continuously, thereby causing the drive lever 34, the second connecting rod 33 and the first connecting rod to rotate until the second part 32 of the first connecting rod contacts the contact part 21 of the position switch 2, as shown. Figure 5As shown; thereafter, as the key continues to be turned, the triangular lock body 11 will continue to rotate. Since the contact part 21 has already contacted the second part 32, there is an interaction force between the two, causing the first part 31 and the second connecting rod 33 to rotate relative to each other, and the included angle between them will gradually decrease; at the same time, during this process, the included angle between the second connecting rod 33 and the drive swing rod 34 also gradually changes. When the key is turned to the correct position, that is, when the triangular lock 1 is fully unlocked, the triangular lock body 11 also rotates to the correct position, as shown. Figure 6 As shown, the triangular lock body 11 is in the unlocked state at this time, and the outer side of the second part 32 is in contact with the contact part 21. Compared with the locked state, the angle between the second link 33 and the first part 31 in the locked state is greater than the angle between the second link 33 and the first part 31 when the triangular lock body 11 is in the unlocked state. It is precisely because of this structural design of the trigger component 3 that the first link rotates continuously as the triangular lock 1 rotates, so that the contact point between the contact part 21 and the second part 32 hardly changes during the unlocking process (e.g., Figure 4 , Figure 5 and Figure 6 As can be seen from the operation process, it can effectively reduce the wear on the contact part 21, ensure that the triggering component 3 can effectively trigger the contact part 21 to trigger the position switch 2 to operate, and ensure that the monitoring function of the position switch 2 is effective.

[0035] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A triangular lock mechanism for elevator landing doors, characterized in that, The device includes a triangular lock, a stop switch, a trigger assembly, and a bracket. The bracket connects the triangular lock and the stop switch. One end of the trigger assembly is fixedly connected to the top of the triangular lock, and the other end is rotatably connected to the top of the bracket. One end of the stop switch has a contact portion facing the triangular lock. The trigger assembly rotates with the triangular lock. The trigger assembly includes a first link that triggers the contact portion when the triangular lock is unlocked. The extension of the axis of the contact portion passes through the side wall of the first link.

2. The triangular lock mechanism according to claim 1, characterized in that, The support includes a first base plate, a first side plate, a second side plate, and a top plate. The first side plate and the second side plate are located on both sides of the first base plate and are perpendicular to the first base plate. The top plate is parallel to the first base plate.

3. The triangular lock mechanism according to claim 2, characterized in that, The bottom edges of the first side plate and the second side plate are both fixedly connected to the first base plate, and one side of the top plate is fixedly connected to the top edge of the second side plate. The top plate extends inward from the side of the second side plate that is closer to the first base plate.

4. The triangular lock mechanism according to claim 3, characterized in that, The distance between the first side plate and the triangular lock is greater than the distance between the second side plate and the triangular lock, and the first side plate is fixedly connected to one side of the position switch.

5. The triangular lock mechanism according to claim 2, characterized in that, The triangular lock includes a triangular lock body and a second base plate. The bottom surface of the triangular lock body is fixedly connected to the top surface of the second base plate, and the end of the second base plate near the positioning switch is fixedly connected to the end of the first base plate away from the positioning switch.

6. The triangular lock mechanism according to claim 5, characterized in that, The first link includes a first part and a second part that are perpendicular to each other, and the side of the first part near the contact part is fixedly connected to one side of the second part.

7. The triangular lock mechanism according to claim 6, characterized in that, The second part is used to trigger the contact part when the triangular lock is unlocked, and the extension line of the axis of the contact part extends through the thickness direction of the second part.

8. The triangular lock mechanism according to claim 7, characterized in that, The height of the second part is greater than or equal to the vertical distance from the bottom surface of the first part to the center of the contact part, one end of the second part is flush with one end of the first part, and the length of the second part is less than the length of the first part.

9. The triangular lock mechanism according to claim 6, characterized in that, The triggering component also includes a drive lever and a second connecting rod. The first part is parallel to the second connecting rod, and the top surface of the first part is in contact with the bottom surface of the second connecting rod. One end of the drive lever is fixedly connected to the top of the triangular lock body. One end of the second connecting rod is rotatably connected to the other end of the drive lever. The other end of the second connecting rod is rotatably connected to one end of the first part. The other end of the first part is rotatably connected to the top plate.

10. The triangular lock mechanism according to claim 7, characterized in that, The triangular lock body has a locked state and an unlocked state. When the triangular lock body is in the locked state, there is a gap between the outer side of the second part and the contact part. When the triangular lock body is in the unlocked state, the outer side of the second part is in contact with the contact part. The angle between the second link and the first part when the triangular lock body is in the locked state is greater than the angle between the second link and the first part when the triangular lock body is in the unlocked state.

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