Lower safety edge structure of elevator car

Abstract

The utility model discloses an elevator car lower safety edge structure which comprises a microswitch and a movable lower safety disc, the microswitch is installed on the bottom face of a bottom plate of an elevator car and connected with a control system of an elevator, the lower safety disc is movably assembled with the bottom plate through a fixing assembly, and a trigger elastic piece of the microswitch abuts against the lower safety disc. The fixing assembly comprises a supporting frame, a fixing lug is arranged on the supporting frame, the fixing lug is connected with the bottom plate through a bolt to form a structure capable of floating up and down, the supporting frame is hung through the bolt, and the lower safety disc and the supporting frame are locked and fixed. When the elevator descends, if the lower safety disc touches a person or an object, the lower safety disc moves upwards, the microswitch is triggered, and the elevator stops running. The whole structure is fewer in parts, simpler in structure, less prone to faults and lower in cost; and after the elevator touches a person or an object in the afternoon, the lower safety disc can be immediately lifted and triggered, an elastic buffering process is not needed, and the sensitivity and the reliability are higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator equipment technical field especially, it relates to a kind of safety protection structure applied to elevator car. BACKGROUND

[0002] With the improvement of people's quality of life requirements, the application range of elevator is more and more widely, such as many families begin to install household elevator, especially multi-storey villa. Due to the demand of elevator structure simplification, space application efficiency, etc., such occasions often use shaftless elevator. Due to the shaftless protection, if there is an object under the car when the elevator is descending, or someone is standing under the elevator without attention, these will probably cause safety accidents, and there is a security risk. Therefore, people have invented safety protection structure for such elevator, such as a shaftless intelligent household elevator safety operation space protection device disclosed in Chinese invention patent application CN202010143944.X, which will make the microswitch act if there is a person or object under the elevator touching the elevator bottom connecting plate when the elevator is descending, the safety contactor is disconnected, and the elevator is controlled to stop, thereby reducing the safety risk brought by the operation of shaftless elevator. However, the bottom protection structure of the elevator includes car bottom mounting plate, first car bottom floating plate, second car bottom floating plate, lower microswitch, car bottom guide rod, spherical rubber positioning damping pad and upper and lower elastic members, etc., which involves many parts and has complex structure, not only leads to high cost, but also makes the trigger action need to be transmitted gradually due to its complex structure, and cannot be done at one time, so it may affect its sensitivity and reliability. SUMMARY

[0003] The utility model provides a structure simpler, design more reasonable, less parts, cost lower, trigger action can faster transmission's elevator car lower safety edge structure in view of the shortcomings of prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of elevator car lower safety edge structure, including microswitch and movable lower safety disc, microswitch is installed in the bottom surface of the bottom plate of car and is connected with the control system of elevator, lower safety disc is movably assembled with the bottom plate by fixed assembly and forms floatable structure, the trigger spring of microswitch is in abutment with lower safety disc, characterized by: the fixed assembly includes support frame, support frame is provided with fixed lug that protrudes towards bottom plate, fixed lug is connected with bottom plate by bolt and forms the structure that can float up and down, support frame is hung by bolt, and lower safety disc is locked and fixed with support frame.

[0005] Further, a plurality of limiting columns are installed on the bottom plate, the bolt adopts shoulder screw, and each shoulder screw is screwed into the corresponding limiting column to realize the assembly and fixation of the support frame.

[0006] Further, the position of the shaft shoulder screw on the support frame is provided with an avoiding slot, and the shaft shoulder screw passes through the corresponding avoiding slot when the support frame floats.

[0007] As preferred, the micro switch is arranged at the position of the middle area and the edge of the lower safety disc, which can ensure the dead angle triggering and further improve the sensitivity and reliability.

[0008] As preferred, the lower safety disc is composed of several independent sub-discs, each of which is assembled and fixed by the corresponding fixed assembly, and each sub-disc is connected with the micro switch.

[0009] As preferred, the micro switch is arranged at the position of the four corners of each sub-disc of the lower safety disc.

[0010] As preferred, each sub-disc of the lower safety disc is locked and fixed with the support frame by the countersunk screw.

[0011] As preferred, the limiting column is assembled with the bottom plate by the rivet pressing mode to form the rivet pressing limiting column.

[0012] The utility model discloses a fixed assembly that the support frame is hung on the bottom plate of the car by bolt, and the lower safety disc is connected with the fixed assembly to form a floating structure, and the lower safety disc is hung on the bolt head due to the weight and leaves the space of upward movement. If the lower safety disc touches the person or object when the elevator is descending, the lower safety disc will move upward and trigger the micro switch to stop the operation of the elevator. The whole structure has less parts, simpler structure, less failure, lower cost, and the lower safety disc will immediately rise and trigger after touching the person or object, without elastic buffering process, so that the response is faster and more timely, and the sensitivity and reliability are higher. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure diagram of the utility model;

[0014] Figure 2 It is the exploded view of the utility model;

[0015] Figure 3 It is Figure 2 It is the partial enlarged view of the micro switch and the limiting column installed on the bottom plate;

[0016] Figure 4 It is the structure diagram of the fixed assembly of the utility model.

[0017] In the drawing, 1 is the car, 2 is the bottom plate, 3 is the lower safety disc, 4 is the micro switch, 41 is the trigger spring, 5 is the fixed assembly, 51 is the support frame, 52 is the fixed lug, 53 is the shaft shoulder screw, 54 is the avoiding slot, 6 is the limiting column, and 7 is the countersunk screw. DETAILED DESCRIPTION

[0018] In this embodiment, with reference to Figures 1-4 , the elevator car lower safety edge structure includes a micro switch 4 and a movable lower safety disc 3, the micro switch 4 is installed on the bottom surface of the bottom plate 2 of the car 1 and connected with the control system of the elevator, the lower safety disc 3 is movably assembled with the bottom plate 2 through a fixed assembly 5 to form a floating structure, the trigger spring 41 of the micro switch 4 abuts against the lower safety disc 3; the fixed assembly includes a support frame 51, the support frame 51 is provided with a fixed lug 52 protruding towards the bottom plate 2, the fixed lug 52 is connected with the bottom plate 2 by a bolt to form a structure that can float up and down, the support frame 51 is hung by the bolt, and the lower safety disc 3 is locked and fixed with the support frame 51.

[0019] A plurality of limiting columns 6 are installed on the bottom plate 2, the bolt is a shoulder screw 53, and each shoulder screw 53 is screwed into the corresponding limiting column 6 to realize the assembly and fixation of the support frame 51.

[0020] Avoidance grooves 54 are respectively arranged on the support frame 51 in positions aligned with the shoulder screws 53, so that when the support frame 51 floats up, the shoulder screws 53 pass through the corresponding avoidance grooves 54, so as to avoid blocking the shoulder screws 53 and affecting the up-and-down floating stroke of the lower safety disc 3.

[0021] The micro switch 4 is arranged in positions aligned with the middle region and the edge regions of the lower safety disc 3, so that no dead angle triggering is ensured, and the sensitivity and reliability are further improved.

[0022] The lower safety disc 3 is composed of a plurality of (for example, three) independent sub-discs, each sub-disc is assembled and fixed by the corresponding fixed assembly 5, and each sub-disc is butt-jointed with the micro switch 4.

[0023] The micro switch 4 is arranged in the position of each sub-disc of the lower safety disc 3, so as to ensure independent floating and triggering.

[0024] Each sub-disc of the lower safety disc 3 is locked and fixed with the support frame 51 by a countersunk screw 7.

[0025] The limiting column 6 is assembled with the bottom plate by a press riveting method to form a press riveting limiting column.

[0026] Normally, the lower safety disc 3 will be hung on the screw head of the shoulder screw 53 due to the weight and leave a space for upward movement. When the elevator is descending, if the lower safety disc 3 touches a person or an object, the lower safety disc 3 will move upwards along the shoulder screw 53, trigger the micro switch 4, and stop the elevator from running.

[0027] The utility model has made a detailed description, the above-mentioned, only for the preferred embodiment of the utility model, when cannot limit the utility model implementation range, namely all equal changes and modification that make in the application scope, should still belong to the utility model cover range.

Claims

1. An elevator car bottom safety edge structure comprising a micro switch and a movable bottom safety disc, the micro switch is mounted on the bottom surface of the car floor and connected with the control system of the elevator, the bottom safety disc is movably assembled with the floor through a fixing assembly to form a floating structure, the trigger spring of the micro switch is in abutment with the bottom safety disc, characterized in that: The fixing component includes a support frame with fixing ears protruding towards the base plate. The fixing ears are connected to the base plate by bolts to form a structure that can float up and down. The support frame is suspended by bolts, and the lower safety plate is locked and fixed to the support frame.

2. The elevator car lower safety side structure according to claim 1, characterized in that: Multiple limiting posts are installed on the base plate. The bolts are shoulder screws, and each shoulder screw is screwed into the corresponding limiting post to achieve the assembly and fixation of the support frame.

3. The elevator car lower safety side structure according to claim 1, characterized in that: Alignment slots are provided on the support frame at the positions of the shoulder screws. When the support frame floats up, the shoulder screws pass through the corresponding alignment slots.

4. The elevator car lower safety side structure according to claim 1, characterized in that: Microswitches are installed in the middle area and at each edge of the lower safety disc.

5. The elevator car lower safety side structure according to claim 1, characterized in that: The lower safety disc is composed of several independent sub-discs, each sub-disc is assembled and fixed by a corresponding fixing component, and each sub-disc is connected to a micro switch.

6. The elevator car lower safety side structure according to claim 5, characterized in that: Microswitches are installed at the four corners of each sub-panel near the lower safety plate.

7. The elevator car lower safety side structure according to claim 5, characterized in that: Each sub-panel of the lower safety disc is locked and fixed to the support frame by countersunk screws.

8. The elevator car lower safety side structure according to claim 2, characterized in that: The limiting post is assembled with the base plate by a press-riveting method to form a press-riveted limiting post.

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