A retractable foot guard for elevator cars

Abstract

This utility model relates to the field of elevator technology, and more particularly to a retractable leg guard for elevator cars. This utility model provides a retractable leg guard for elevator cars comprising a support frame, an elevator body, a movable seat, a connecting plate, and a motor. A support frame is fixedly installed on the front side of the lower end of the elevator body. Movable seats are slidably installed on both sides of the support frame. A connecting plate is fixedly installed at the front end of each movable seat. A motor is fixedly installed on the right side of the middle of the support frame. This utility model uses a motor-driven screw rod to move the connecting plate and the adapter plate. As the adapter plate moves, the leg guard rotates downwards for protection, thus improving the efficiency of adjusting the leg guard.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a foot guard for elevator cars with a telescopic effect. Background Technology

[0002] As a core component of the elevator safety system, elevator foot guards are mainly used to prevent passengers from being sheared or falling at the gap between the car and the landing sill. However, when the elevator runs to the ground floor or non-level area, the existing elevator foot guards may be deformed due to insufficient pit depth, affecting the lifespan and safety of the equipment.

[0003] According to Chinese patent publication CN220201113U, an automatically adjustable elevator car foot guard is proposed, comprising: a foot guard hinged to one side of the bottom of the elevator car; an electric winch fixedly installed on the other side of the bottom of the elevator car, the cable of the electric winch being connected to the bottom of the foot guard; and a stabilizing mechanism disposed at the bottom of the elevator car to support the foot guard.

[0004] Although the aforementioned patent can achieve the effect of adjusting the elevator car foot guards, in actual use, the patent uses a top pressure seat to limit and fix the foot guards. The top pressure seat alone is not stable enough, and the position of the top pressure seat needs to be repeatedly adjusted when adjusting the elevator car foot guards, which affects the efficiency of adjusting the elevator car foot guards. Utility Model Content

[0005] To overcome the inefficiency of adjusting elevator car foot guards, the technical problem to be solved is to provide an elevator car foot guard with a telescopic effect.

[0006] The technical solution is as follows: A retractable foot guard for an elevator car includes a support frame, an elevator body, a movable seat, a connecting plate, a motor, a screw rod, a transition block, a transmission wheel, a belt, a transition plate, a torsion spring, a leg guard, a stop rod, a soft rubber sleeve, and a buffer spring. A support frame is fixedly installed on the front side of the lower end of the elevator body. Movable seats are slidably installed on both sides of the support frame. A connecting plate is fixedly installed at the front end of each movable seat. A motor is fixedly installed on the right side of the middle of the support frame. A transition block is rotatably provided in the middle of the support frame. A spiral rod is rotatably inserted inside the adapter block. The front end of the spiral rod is fixedly connected to the connecting plate. Both the motor output shaft and the adapter block are fixedly equipped with transmission wheels. Belts are wound around the two transmission wheels. The lower middle part of the connecting plate is rotatably connected to the adapter plate through a torsion spring. A leg guard plate is fixedly installed at the front end of the adapter plate. Two abutment rods are fixedly installed in the middle of the support frame. The abutment rods are located on both sides of the adapter block. A soft rubber sleeve plate is fixedly installed at the front end of the leg guard plate. A certain number of buffer springs are fixedly installed inside the soft rubber sleeve plate. The other end of each buffer spring is fixedly connected to the leg guard plate.

[0007] Preferably, it also includes rubber strips, with rubber strips fixedly installed on both sides of the soft rubber sleeve.

[0008] Preferably, the connecting plate has a notch in the middle.

[0009] Preferably, the front end of the abutment rod passes through the notch in the connecting plate and abuts against the leg guard plate.

[0010] Preferably, it also includes a fixing block, a rotating shaft, and an anti-slip sleeve. The four ends of the front face of the soft rubber sleeve are fixedly connected to the fixing block. A rotating shaft is rotatably provided between the two fixing blocks on the upper and lower sides, and an anti-slip sleeve is wound around the two rotating shafts.

[0011] Preferably, a protective shell is also included, with the protective shell fixedly installed in the middle of the support frame, and the protective shell is sleeved on the outside of the motor, adapter block and transmission wheel.

[0012] Compared with the prior art, the present invention has the following advantages: The present invention uses a motor to drive a screw rod to move, thereby moving the connecting plate and the adapter plate. As the adapter plate moves, the leg guards rotate downwards for protection, thus improving the efficiency of adjusting the leg guards. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the support frame, elevator, and movable seat components of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including the motor, screw rod, and transmission wheel.

[0016] Figure 4 This is a three-dimensional structural diagram of the soft rubber sleeve, rubber strip, and buffer spring components of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, such as the fixing block, rotating shaft, and anti-slip sleeve.

[0018] Reference numerals: 1_Support frame, 101_Elevator body, 2_Moving seat, 3_Connecting plate, 4_Motor, 5_Screw rod, 501_Adapter block, 6_Transmission wheel, 7_Belt, 8_Adapter plate, 9_Torsion spring, 10_Leg guard plate, 11_Abutting rod, 12_Soft rubber sleeve plate, 13_Rubber strip, 14_Buffer spring, 15_Fixing block, 16_Rotating shaft, 17_Anti-slip sleeve, 18_Protective shell. Detailed Implementation

[0019] Example: A retractable foot guard for elevator cars, such as... Figures 1-5As shown, the elevator includes a support frame 1, an elevator body 101, a movable seat 2, a connecting plate 3, a motor 4, a screw rod 5, a transition block 501, a transmission wheel 6, a belt 7, a transition plate 8, a torsion spring 9, a leg guard plate 10, a stop rod 11, a soft rubber sleeve 12, and a buffer spring 14. The support frame 1 is screwed onto the front side of the lower end of the elevator body 101. Movable seats 2 are slidably mounted on both sides of the support frame 1. A connecting plate 3 is screwed onto the front end of the movable seat 2. A motor 4 is screwed onto the right side of the middle of the support frame 1. A transition block 501 is rotatably mounted in the middle of the support frame 1. A screw rod 5 rotatably passes through the transition block 501. The front end of the screw rod 5 is fixed to the connecting plate 3. The motor 4 output shaft and the adapter block 501 are both fixed with transmission wheels 6. Belts 7 are wound around the two transmission wheels 6. The lower middle part of the connecting plate 3 is rotatably connected to the adapter plate 8 through a torsion spring 9. The front end of the adapter plate 8 is installed with a leg guard plate 10 by screws. The middle part of the support frame 1 is installed with two abutment rods 11 by screws. The abutment rods 11 are located on both sides of the adapter block 501. The front end of the leg guard plate 10 is fixed with a soft rubber sleeve plate 12. A certain number of buffer springs 14 are fixed inside the soft rubber sleeve plate 12. The other end of the buffer springs 14 is fixed to the leg guard plate 10. The middle part of the connecting plate 3 is provided with a notch. The front ends of the abutment rods 11 pass through the notch of the connecting plate 3 and abut against the leg guard plate 10.

[0020] like Figure 4 As shown, it also includes rubber strips 13, and rubber strips 13 are fixedly provided on both sides of the soft rubber sleeve plate 12.

[0021] like Figure 5 As shown, it also includes a fixing block 15, a rotating shaft 16 and an anti-slip sleeve 17. The four ends of the front end face of the soft rubber sleeve plate 12 are fixedly connected to the fixing block 15. The upper and lower fixing blocks 15 are rotatably connected to the rotating shaft 16, and the anti-slip sleeve 17 is wound around the two rotating shafts 16.

[0022] like Figure 2 As shown, it also includes a protective shell 18. The protective shell 18 is fixedly installed in the middle of the support frame 1. The protective shell 18 is sleeved on the outside of the motor 4, the adapter block 501 and the transmission wheel 6.

[0023] This mechanism is used during elevator operation. First, when the elevator car is about to stop, the elevator body 101 will move the lower leg guards 10. During the movement, the anti-slip sleeve 17 and soft rubber sleeve 12 are squeezed in contact with the elevator shaft. When the elevator moves up and down, the anti-slip sleeve 17 rotates around the shaft 16 to reduce the pressure generated during elevator movement. At the same time, when the soft rubber sleeve 12 is squeezed, it transmits the pressure to the buffer spring 14. At this time, the buffer spring 14 and the soft rubber sleeve 12 are compressed. When the elevator stops at the corresponding floor, the motor 4 is started. When the output shaft of the motor 4 rotates, it drives the adapter block 501 to rotate through the transmission wheel 6 and belt 7. When the adapter block 501 rotates, it causes the screw rod 5 to move backward. When the screw rod 5 moves, it drives the connecting plate 3, the adapter plate 8, and the sliding plate 10 to move backward. When the moving seat 2 moves and the connecting plate 3 moves to the rear, the abutting rod 11 passes through the notch of the connecting plate 3 and abuts against the leg guard plate 10. As the leg guard plate 10 moves with the transition plate 8, it is held in place by the abutting rod 11, so the leg guard plate 10 will drive the transition plate 8 to rotate to the rear. At this time, the torsion spring 9 will deform until the leg guard plate 10 rotates to 90 degrees. At this time, the elevator stops, and the leg guard plate 10 is located between the inner and outer doors of the elevator to prevent passengers from being sheared or falling at the gap between the car and the landing sill. When the elevator runs up and down, the motor 4 starts, causing the output shaft of the motor 4 to rotate in the reverse direction. At this time, the screw rod 5 drives the connecting plate 3, the transition plate 8 and the moving seat 2 to move and reset. At the same time, the leg guard plate 10 and the torsion spring 9 rotate and reset, the soft rubber sleeve plate 12 is no longer squeezed, and the buffer spring 14 resets.

Claims

1. A retractable foot guard for an elevator car, characterized in that, The elevator includes a support frame (1), an elevator body (101), a movable seat (2), a connecting plate (3), a motor (4), a screw rod (5), a transition block (501), a transmission wheel (6), a belt (7), a transition plate (8), a torsion spring (9), a leg guard plate (10), a stop rod (11), a soft rubber sleeve plate (12), and a buffer spring (14). The support frame (1) is fixedly installed on the front side of the lower end of the elevator body (101). Movable seats (2) are slidably installed on both the left and right sides of the support frame (1). A connecting plate (3) is fixedly installed at the front end of the movable seat (2). A motor (4) is fixedly installed on the right side of the middle part of the support frame (1). A transition block (501) is rotatably provided in the middle of the support frame (1). A rotating part passes through the transition block (501). A spiral rod (5) is provided, the front end of which is fixedly connected to the connecting plate (3). The output shaft of the motor (4) and the adapter block (501) are both fixedly provided with transmission wheels (6). A belt (7) is wound around the two transmission wheels (6). The lower middle part of the connecting plate (3) is rotatably connected to the adapter plate (8) through the torsion spring (9). The front end of the adapter plate (8) is fixedly installed with a leg guard plate (10). The middle part of the support frame (1) is fixedly installed with two abutting rods (11). The abutting rods (11) are located on both sides of the adapter block (501). The front end of the leg guard plate (10) is fixedly provided with a soft rubber sleeve plate (12). A certain number of buffer springs (14) are fixedly provided inside the soft rubber sleeve plate (12). The other end of the buffer springs (14) is fixedly connected to the leg guard plate (10).

2. The telescopic foot guard for an elevator car according to claim 1, characterized in that, It also includes rubber strips (13), and rubber strips (13) are fixed on both sides of the soft rubber sleeve plate (12).

3. A telescopic foot guard for an elevator car according to claim 2, characterized in that, The connecting plate (3) has a notch in the middle.

4. A telescopic foot guard for an elevator car according to claim 3, characterized in that, The front ends of the abutment rods (11) all pass through the notches of the connecting plate (3) and abut against the leg guards (10).

5. A telescopic foot guard for an elevator car according to claim 4, characterized in that, It also includes a fixing block (15), a rotating shaft (16) and an anti-slip sleeve (17). The four ends of the front face of the soft rubber sleeve plate (12) are fixedly connected to the fixing block (15). The upper and lower fixing blocks (15) are rotatably connected to the rotating shaft (16), and the anti-slip sleeve (17) is wound around the two rotating shafts (16).

6. A telescopic foot guard for an elevator car according to claim 5, characterized in that, It also includes a protective shell (18), which is fixedly installed in the middle of the support frame (1). The protective shell (18) is sleeved on the outside of the motor (4), the adapter block (501) and the transmission wheel (6).

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