Rotating mechanism of ladder

Abstract

The utility model discloses a rotating mechanism of a ladder, which belongs to the technical field of ladders and comprises a left arm, the side edge of the left arm is connected with a right arm, the left arm and the right arm are rotatably connected through a rotating shaft, and a spring bolt is arranged in the middle of the left arm. The position of one of the left arm and the right arm is fixed, the other one can freely rotate along the left arm and the right arm, in the rotating stage, the second spring is in a compressed state, when the lock catch reaches the groove, under the action of the second spring, the lock catch jacks the spring bolt away, the lock catch stretches into the groove for locking, and locking after the ladder rotates by an angle is achieved. After the shifting gears rotate, the lock catches can be driven to retreat from the grooves, unlocking is achieved, the rotating angle of the ladder depends on the positions and the number of the grooves, and the ladder provided with the ladder locking device is small in occupied space and convenient to store when folded, can be changed at various angles, has various use modes and can be applied to various use scenes.

Description

Technical Field

[0001] This utility model belongs to the field of ladder technology, specifically relating to a ladder rotation mechanism. Background Technology

[0002] A ladder is an everyday tool consisting of two long, thick rods with a horizontal bar in the middle for climbing.

[0003] The existing ladder rotation mechanism has the following drawbacks: its simple structure makes it impossible to fix the ladder after rotation, which limits its use and makes it unusable in non-communication scenarios, causing inconvenience. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a ladder rotation mechanism that is compact in structure and convenient for rotation and fixing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ladder rotation mechanism, including a left arm, a right arm connected to the side of the left arm, the left arm and the right arm being rotatably connected by a rotating shaft, a locking tongue provided in the middle of the left arm, a first spring provided between one end of the locking tongue and the internal mounting block of the left arm, a plurality of grooves provided at the arc end of the left arm, a sliding rod movably connected inside the right arm, a lock buckle connected to the side of the sliding rod, a second spring nested on the surface of the first spring, and a stop provided on the side of the right arm near the left arm, the stop being rotatably connected to the right arm by a pivot pin.

[0006] Preferably, the locking tongue is rotatably connected to the rotating shaft, and one end of the locking tongue is engaged in the groove under the action of the first spring force.

[0007] Preferably, a third spring is connected to the surface of the pivot pin between the shift stop and the right arm.

[0008] Preferably, the latch is engaged in the groove under the elastic force of the second spring.

[0009] Preferably, the end of the latch near the groove has a rounded corner and a bevel.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention allows the locking tongue to engage with a groove, fixing one of the left and right arms in a fixed position while the other can rotate freely. During rotation, a second spring is compressed. When the latch reaches the groove, the second spring pushes the locking tongue away, allowing the latch to engage and lock within the groove. This locks the ladder after it has rotated a certain angle. Rotating the lever allows the latch to disengage from the groove, unlocking the ladder. The angle of rotation depends on the position and number of grooves. Ladders equipped with this invention occupy little space when folded, making them easy to store. The ladder can be adjusted to various angles, offering multiple usage options and suitable for various application scenarios. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] Figure 3 Schematic diagrams of different structural forms of ladders equipped with this utility model;

[0015] In the diagram: 1. Left arm; 2. Rotating shaft; 3. Groove; 4. Locking tongue; 5. Lock; 6. Right arm; 7. Slide rod; 8. Second spring; 9. Stop; 10. Shaft pin; 11. First spring; 12. Third spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 The present invention provides the following technical solution: a rotating mechanism for a ladder, including a left arm 1, a right arm 6 connected to the side of the left arm 1, the left arm 1 and the right arm 6 being rotatably connected by a rotating shaft 2, a locking tongue 4 being provided in the middle of the left arm 1, a first spring 11 being provided between one end of the locking tongue 4 and the internal mounting block of the left arm 1, a plurality of grooves 3 being provided at one arc end of the left arm 1, a sliding rod 7 being movably connected inside the right arm 6, a lock 5 being connected to the side of the sliding rod 7, a second spring 8 being nested on the surface of the first spring 11, and a stop 9 being provided on the side of the right arm 6 near the left arm 1, the stop 9 being rotatably connected to the right arm 6 by a pivot pin 10.

[0018] Specifically, the locking tongue 4 is rotatably connected to the rotating shaft 2, and one end of the locking tongue 4 is engaged in the groove 3 under the elastic force of the first spring 11.

[0019] By adopting the above technical solution, the locking tongue 4 is inserted into the groove 3, so that one of the left arm 1 and the right arm 6 is fixed in one position, while the other can rotate freely along it.

[0020] Specifically, a third spring 12 is connected to the surface of the pivot pin 10 between the shift 9 and the right arm 6.

[0021] By adopting the above technical solution, the shift stop 9 can be rotated to drive the latch 5 out of the groove 3, thereby unlocking the device.

[0022] Specifically, the latch 5 is engaged in the groove 3 under the elastic force of the second spring 8.

[0023] By adopting the above technical solution, when the latch 5 reaches the groove 3, under the action of the second spring 8, the latch 5 pushes the latch tongue 4 away, and the latch 5 extends into the groove 3 to lock, thereby achieving locking after the ladder rotates.

[0024] Specifically, the end of the latch 4 near the groove 3 has a rounded corner and a bevel.

[0025] By adopting the above technical solution, it is convenient for the latch 5 to push the bolt 4 away.

[0026] The working principle and usage process of this utility model are as follows: When this utility model is used, when the locking tongue 4 is inserted into the groove 3, one of the left arm 1 and the right arm 6 is fixed in one position, while the other can rotate freely along it. During the rotation, the second spring 8 is in a compressed state. When the latch 5 reaches the groove 3, under the action of the second spring 8, the latch 5 pushes the locking tongue 4 away and extends into the groove 3 to lock, thereby locking the ladder after it has rotated to a certain angle. After the stop 9 is rotated, it can drive the latch 5 out of the groove 3 to unlock it. The angle of the ladder's rotation depends on the position and number of grooves 3.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotating mechanism of a ladder comprising a left arm (1), characterized in that: The side of the left arm (1) is connected with the right arm (6), the left arm (1) and the right arm (6) are rotatably connected through the rotating shaft (2), the middle of the left arm (1) is provided with the lock tongue (4), one end of the lock tongue (4) and the internal mounting block of the left arm (1) are provided with the first spring (11), the arc end of the left arm (1) is provided with a plurality of grooves (3), the inner part of the right arm (6) is movably connected with the slide rod (7), the side of the slide rod (7) is connected with the lock catch (5), the surface of the first spring (11) is nested with the second spring (8), the side, close to the left arm (1), of the right arm (6) is provided with the push stop (9), the push stop (9) and the right arm (6) are rotatably connected through the shaft pin (10).

2. A rotating mechanism for a ladder according to claim 1, wherein: The lock tongue (4) is rotatably connected with the rotating shaft (2), one end of the lock tongue (4) is clamped into the groove (3) under the elastic force of the first spring (11).

3. The rotating mechanism of an escalator according to claim 1, wherein: The surface of the shaft pin (10) between the push stop (9) and the right arm (6) is connected with the third spring (12).

4. The rotating mechanism of an escalator according to claim 1, wherein: The lock catch (5) is clamped into the groove (3) under the elastic force of the second spring (8).

5. The rotating mechanism of an escalator according to claim 1, wherein: The end, close to the groove (3), of the lock tongue (4) is provided with a round corner and an inclined surface.

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