A precise automatic return ladder handle structure

Abstract

This utility model discloses a precise automatic return ladder handle structure, including a ladder base, a locking tongue positioning frame fixedly connected to the ladder base, a guide post at one end of the locking tongue positioning frame, one side of the guide post having a circular structure, a locking tongue body inserted inside the locking tongue positioning frame, a locking tongue connector fixedly connected to one end of the locking tongue body, the locking tongue connector having a through hole, a first locking stroke component at one end of the locking tongue connector having a through hole, the through hole of the first locking stroke component corresponding to the through hole of the locking tongue connector, a shoulder screw connected inside the locking tongue connector and the through hole of the first locking stroke component, the end of the locking tongue body near the guide post having an arc-shaped structure, and the first locking stroke component rotatably connected to one end of the locking tongue body. This device can precisely control the movement stroke of the locking tongue body, enabling unlocking when going up or down the ladder while avoiding collisions when going down the ladder.

Description

Technical Field

[0001] This utility model relates to the field of roof rack ladder technology, specifically a ladder handle structure with precise automatic return. Background Technology

[0002] A roof rack ladder, simply put, is a ladder installed on the side of a car. Its sole purpose is to allow users to safely and easily climb onto the roof to access items on the roof rack or luggage compartment. It is typically used in conjunction with roof racks / trunks or roof boxes and is an important accessory for outdoor modifications of off-road vehicles, SUVs, and station wagons.

[0003] Existing off-road vehicle side ladders typically consist of an upper ladder, a lower ladder, and a base. The upper and lower ladders are hinged together, and they are fixed to the base by a latch. When opening, the latches usually use a two-stage locking mechanism, which can easily cause the lower ladder to open directly, potentially leading to bumps and collisions. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a precise and automatic return ladder handle structure to solve the problem mentioned in the background art that when the side ladder of an off-road vehicle is unlocked, it is easy for the ladder to unfold directly when people go down, causing them to bump into it.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precise automatic return ladder handle structure, including a ladder base body, a locking tongue positioning frame fixedly connected to the ladder base body, a guide post provided at one end of the locking tongue positioning frame, one side of the guide post having a circular structure, a locking tongue body inserted inside the locking tongue positioning frame, the end of the locking tongue body near the guide post having an arc-shaped structure, and a first locking stroke component rotatably connected to one end of the locking tongue body.

[0006] Preferably, one end of the latch body is fixedly connected to a latch connector, the latch connector has a through hole, and one end of the latch connector is provided with a first locking stroke component.

[0007] Preferably, the first locking stroke component has a through hole, the through hole of the first locking stroke component corresponds to the through hole of the lock tongue connector, and the lock tongue connector and the through hole of the first locking stroke component are connected with a shoulder screw.

[0008] Preferably, screw holes are provided on both sides of the locking tongue positioning bracket, and fixing screws are inserted into the screw holes. One end of the fixing screw is fixedly connected to the ladder base.

[0009] Preferably, the top of the latch positioning frame has an opening, the latch body and the latch positioning frame are slidably connected, and the outer wall of the latch body is provided with a protruding structure that matches the inner wall structure of the latch positioning frame.

[0010] Preferably, a mounting base is fixedly connected to the ladder base, and a guide column is fixedly connected to one side of the mounting base.

[0011] Preferably, the bottom of the first locking stroke component is connected to the second locking stroke component, and the first locking stroke component, the shoulder screw, the lock tongue body and the lock tongue positioning bracket are all symmetrically distributed about the bisector of the second locking stroke component.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device can accurately control the movement of the locking tongue, so as to unlock the ladder when going up and down, and avoid the problem of collisions caused to people when going down the ladder.

[0014] (2) This device sets up a locking tongue positioning frame, and inserts a locking tongue body that can slide linearly inside the locking tongue positioning frame. At the same time, a guide post is set at one end of the locking tongue body to limit the locking tongue body. When the locking tongue body is fully opened, it is at the top of the guide post. After the locking tongue body is rotated twice, the locking tongue body is at the bottom of the guide post. Thus, the two movements of the locking tongue body can unlock the upper and lower ladders in sequence, avoiding the collision caused to people by the sudden opening of the lower ladder, and improving the practicality of this device.

[0015] (3) This device can limit the movement of the lock tongue by setting a lock tongue positioning frame, thus ensuring the stability of the lock tongue movement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a ladder handle structure with precise automatic return according to the present invention.

[0017] Figure 2 This is a schematic diagram of the connection structure between the locking tongue and the guide post of a ladder handle structure with precise automatic return according to this utility model;

[0018] Figure 3 This is a front view of the connection between the latch connector, latch positioning frame, and latch body of a ladder handle structure with precise automatic return according to this utility model.

[0019] In the diagram: 1. Guide post; 2. Mounting base; 3. Ladder base; 4. Shoulder screw; 5. Lock tongue positioning bracket; 6. Lock tongue body; 7. Fixing screw; 8. Lock tongue connector; 9. First lock stroke component; 10. Second lock stroke component. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3This utility model provides a technical solution: a precise automatic return ladder handle structure, including a ladder base 3, on which a locking tongue positioning frame 5 is fixedly connected. Both sides of the locking tongue positioning frame 5 have screw holes, and fixing screws 7 are inserted into the screw holes. One end of the fixing screw 7 is fixedly connected to the ladder base 3. This structure ensures the stability of the locking tongue positioning frame 5, thereby ensuring the stability of the locking tongue body 6 inside the locking tongue positioning frame 5. An opening is provided at the top of the locking tongue positioning frame 5, and the locking tongue body 6 and the locking tongue positioning frame 5 form a sliding connection. A protruding structure is provided on the outer wall of the locking tongue body 6, which matches the inner wall structure of the locking tongue positioning frame 5. This structure ensures the stability of the locking tongue. Positioning bracket 5 can limit the movement of the latch body 6, improving its stability and preventing it from detaching from the positioning bracket 5. The latch body 6 is a custom-made product; when the lock is fully open, the locking surface of the latch body 6 is not fully unlocked. It unlocks again when it reaches the guide post 1, achieving secondary unlocking. A mounting base 2 is fixedly connected to the ladder base 3, and a guide post 1 is fixedly connected to one side of the mounting base 2. This structure ensures the stability of the guide post 1. The guide post 1 works in conjunction with the latch body 6 to limit its movement, assisting in the secondary locking structure of the latch body 6. A guide post 1 is provided at one end of the latch positioning bracket 5. One side of the guide post 1 has a circular structure. A lock tongue body 6 is inserted inside the lock tongue positioning bracket 5. One end of the lock tongue body 6 is fixedly connected to a lock tongue connector 8. The lock tongue connector 8 has a through hole, and one end of the lock tongue connector 8 is equipped with a first locking stroke component 9. The first locking stroke component 9 has a through hole, and its position corresponds to the through hole of the lock tongue connector 8. A shoulder screw 4 is connected inside the lock tongue connector 8 and the through hole of the first locking stroke component 9. In this structure, during the second unlocking, the lock tongue body 6 continues to move in the unlocking direction. The shoulder screw 4 and the lock tongue connector 8 are custom-designed so that when the latch moves again after reaching its travel position, the first locking stroke component 9 and the first locking stroke component 9... The two-stage locking effect is achieved without being affected by the two-stage locking component 10. The bottom of the first locking component 9 is connected to the second locking component 10. The first locking component 9, the shoulder screw 4, the locking tongue body 6 and the locking tongue positioning bracket 5 are all symmetrically distributed about the bisector of the second locking component 10. The first locking component 9 and the second locking component 10 of this structure are both made of sheet metal, which has good rigidity and precise stroke. The end of the locking tongue body 6 near the guide post 1 has an arc-shaped structure. The first locking component 9 and the second locking component 10 of this device are locking components, which are two parts that can be operated independently, along with the locking tongue body 6.

[0022] Working principle: When using this precise automatic return ladder handle structure, firstly, the first locking travel component 9 and the second locking travel component 10 are operated normally to open the upper ladder. Then, the lower ladder is unlocked. When unlocking, the locking tongue 6 is pulled down. The locking tongue 6 moves downward and smoothly moves to the lower end of the guide post 1 under the guidance and cooperation of the top structure of the locking tongue 6. At this time, the locking tongue 6 unlocks the lower ladder, ensuring the safety of ladder use.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ladder pull structure for precise automatic return, comprising a ladder base body (3), characterized in that: A locking tongue positioning frame (5) is fixedly connected to the ladder base (3). A guide post (1) is provided at one end of the locking tongue positioning frame (5). One side of the guide post (1) has a circular structure. A locking tongue body (6) is inserted inside the locking tongue positioning frame (5). The end of the locking tongue body (6) near the guide post (1) has an arc-shaped structure. A first locking stroke component (9) is rotatably connected to one end of the locking tongue body (6).

2. A precise self-returning ladder handrail structure according to claim 1, characterized in that: One end of the latch body (6) is fixedly connected to a latch connector (8), and a through hole is provided on the latch connector (8). A first locking stroke component (9) is provided on one end of the latch connector (8).

3. A precise self-returning ladder handrail structure according to claim 2, characterized in that: The first locking stroke component (9) has a through hole, and the through hole of the first locking stroke component (9) corresponds to the through hole of the locking tongue connector (8). The locking tongue connector (8) and the through hole of the first locking stroke component (9) are connected with a shoulder screw (4).

4. A precise self-returning ladder handrail structure according to claim 1, characterized in that: Both sides of the locking tongue positioning bracket (5) are provided with screw holes, and a fixing screw (7) is inserted into the screw hole. One end of the fixing screw (7) is fixedly connected to the ladder base body (3).

5. A precise self-returning ladder handrail structure according to claim 1, characterized in that: The top of the latch positioning frame (5) is provided with an opening, the latch body (6) and the latch positioning frame (5) are slidably connected, and the outer wall of the latch body (6) is provided with a protruding structure, which matches the inner wall structure of the latch positioning frame (5).

6. The ladder handle structure with precise automatic return as described in claim 1, characterized in that: A mounting base (2) is fixedly connected to the ladder base (3), and a guide column (1) is fixedly connected to one side of the mounting base (2).

7. A precise self-returning ladder handrail structure according to claim 1, characterized in that: The bottom of the first locking stroke component (9) is connected to the second locking stroke component (10). The first locking stroke component (9), the shoulder screw (4), the lock tongue body (6) and the lock tongue positioning bracket (5) are all symmetrically distributed about the bisector of the second locking stroke component (10).

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