Lever type angle limiting handle

Abstract

The utility model relates to the technical field of train door locks, in particular to a lever type angle limiting handle. The device comprises a limiting handle arranged in a U shape, and the tail end of the limiting handle is sequentially inserted into a compound plate, a sliding block and a rotating plate and drives the rotating plate to rotate synchronously; an edge blocking strip matched with the edge of the rotating plate is arranged at the bottom of the sliding block, and the rotating rotating plate abuts against the edge blocking strip and pushes the sliding block to rotate downwards; a limiting hole is formed in the middle of the sliding block, and a limiting boss matched with the limiting hole is arranged on the inner side of the compound plate. The limiting boss allows the downward rotation angle of the limiting hole to be 15 degrees; the sliding block and the compound plate are connected with a torsional spring; by improving the structure of the limiting handle, the limiting rotation of the rotating plate within the angle range of 15 degrees is achieved, and the process is stable and controllable through components such as a sliding block and a torsion spring. The lever type limiting handle can generate large torque on the rotating plate with small force, so that operation is more labor-saving and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of train door locks, in particular to a lever-type angle limiting handle. Background Art

[0002] With the booming development of urban rail transit, innovations in vehicle safety technology have become a focus of industry attention. Upgrades in lock technology are particularly crucial for improving overall safety. The handle design of bathroom door locks is crucial and must meet high safety requirements. To ensure smooth opening and closing, the handle must be able to rotate left and right, but the rotation angle must be strictly controlled within 15°. Exceeding this range can cause the passenger's hand to collide with the door frame; if the angle is less than 15°, the door cannot be opened due to insufficient travel, affecting normal use and even endangering passenger safety. To address these issues, researchers have actively explored solutions. For example, Chinese patent CN206346575U proposes an adjustable door handle that addresses the limitation of rotating the handle upward to lock and downward to open, allowing it to rotate only downward. However, this solution still has drawbacks. The handle cannot precisely limit the rotation of the rotating plate within a 15° range, resulting in unstable operation and reduced reliability and accuracy. Furthermore, this solution lacks an efficient lever structure, increasing operational difficulty and reducing work efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a lever-type angle limiting handle.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A lever-type angle limit handle comprises a U-shaped limit handle, the end of which is sequentially inserted into a composite plate, a slider and a rotating plate, and drives the rotating plate to rotate synchronously; a bayonet for clamping the limit handle is provided on the side of the rotating plate; a side guard strip that cooperates with the edge of the rotating plate is provided at the bottom of the slider, and the rotating plate abuts against the side guard strip and pushes the slider to rotate downward; a limit hole is provided in the middle of the slider, and a limit boss that cooperates with the limit hole is provided on the inner side of the composite plate; the limit boss allows the limit hole to rotate downward at an angle of 15°; a torsion spring is connected to the slider and the composite plate.

[0006] This technical solution improves the structure of the limit handle to achieve limited rotation of the rotating plate within a 15° angle range, and realizes the stability and controllability of this process through components such as sliders and torsion springs. Specifically, when the passenger applies force to the limit handle, the lever-type limit handle can generate a large torque on the rotating plate with a small force, thereby easily driving the rotating plate to rotate; when the rotating plate rotates to a certain angle, it will contact the retaining strip at the bottom of the slider and push the slider to rotate downward; the limit hole in the middle of the slider will interact with the limit boss on the inner side of the complex plate; due to the limiting effect of the limit boss, the limit hole is only allowed to move within a range of 15° downward rotation, achieving precise control of the rotation angle of the rotating plate and preventing it from over-rotating; when the passenger releases the force on the limit handle, the torsion spring will use its elastic potential energy to push the slider and the rotating plate back to their initial positions, ensuring that the handle can automatically reset after each use.

[0007] In addition, the lever-type angle limiting handle proposed in the present invention also has the following additional technical features:

[0008] According to an embodiment of the present utility model, the limit handle adopts a lever structure, including a power arm located at the bottom of the U-shape and a resistance arm located in the rotating plate, and the length of the power arm is greater than the length of the resistance arm.

[0009] This technical solution adopts a lever-type structure to set the power arm and resistance arm of the limit handle, so as to achieve a larger rotation of the rotating plate with less force, thereby easily driving the rotating plate to rotate, making the operation more labor-saving and efficient.

[0010] According to an embodiment of the present invention, a through hole is provided in the middle of the double plate, through which the limiting handle passes, and a limiting boss is provided at the through hole.

[0011] This technical solution realizes the stable installation and angle limitation of the limit handle on the composite plate by providing a through hole and a limit boss through which the limit handle passes.

[0012] According to an embodiment of the present invention, the limiting boss is rectangular with a through hole in the middle.

[0013] This technical solution ensures the stable fit between the limiting boss and the limiting hole by using a rectangular limiting boss, while meeting the requirements of angle limiting.

[0014] According to an embodiment of the present invention, the limiting hole is arranged in a rectangular shape, and there is a certain gap between the limiting hole and the limiting boss, and the size of the gap meets the requirement of the limiting handle rotating 15°.

[0015] This technical solution ensures that the limit handle can rotate smoothly within a range of 15° by setting a gap between the rectangular limit hole and the limit boss.

[0016] According to an embodiment of the present invention, the upper end of the torsion spring is fixed to the middle portion of the sidewall strip of the slider by means of bolts, and the lower end of the torsion spring is fixed to the bottom edge of the doubler plate by means of bolts.

[0017] This technical solution fixes the upper and lower ends of the torsion spring to the slider and the compound plate respectively, providing a stable reset force for the lever-type angle limit handle, ensuring that the handle can automatically return to its initial position after rotation.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By improving the structure of the limit handle, the rotating plate can be limited in rotation within an angle range of 15°, and this process can be made stable and controllable through components such as sliders and torsion springs; the lever-type limit handle can generate a larger torque on the rotating plate with less force, making the operation more labor-saving and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the present utility model.

[0021] Figure 2 It is a structural diagram of the present utility model.

[0022] In the figure: 1. Double plate; 2. Rotating plate; 3. Slider; 4. Torsion spring; 5. Limit handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a lever-type angle limit handle, including a U-shaped limit handle 5, the ends of which are sequentially inserted into the composite plate 1, the slider 3 and the rotating plate 2, and drive the rotating plate 2 to rotate synchronously; the side of the rotating plate 2 is provided with a bayonet for clamping the limit handle 5; the bottom of the slider 3 is provided with a side guard bar that matches the edge of the rotating plate 2, and the rotating rotating plate 2 contacts the side guard bar and pushes the slider 3 to rotate downward; a limit hole is provided in the middle of the slider 3, and a limit boss that matches the limit hole is provided on the inner side of the composite plate 1; the limit boss allows the limit hole to rotate downward at an angle of 15°; the slider 3 and the composite plate 1 are connected with a torsion spring 4.

[0026] like Figure 1 and Figure 2 As shown, the present technical solution improves the structure of the limit handle, realizes the limited rotation of the rotating plate 2 within an angle range of 15 degrees, and realizes the stable and controllable process through the slider 3, torsion spring 4 and other components. Specifically, when the passenger applies force to the limit handle 5, the lever-type limit handle 5 can generate a large torque on the rotating plate 2 with a small force, thereby easily driving the rotating plate 2 to rotate; when the rotating plate 2 rotates to a certain angle, it will contact the retaining strip at the bottom of the slider 3 and push the slider 3 to rotate downward; the limit hole in the middle of the slider 3 will interact with the limit boss on the inner side of the complex plate 1; due to the limiting effect of the limit boss, the limit hole is only allowed to move within the range of 15 degrees of downward rotation, realizing precise control of the rotation angle of the rotating plate 2 and preventing it from over-rotating; when the passenger releases the force on the limit handle 5, the torsion spring 4 will use its elastic potential energy to push the slider 3 and the rotating plate 2 back to their initial positions, ensuring that the handle can automatically reset after each use.

[0027] In addition, the lever-type angle limiting handle proposed in the present invention also has the following additional technical features:

[0028] According to an embodiment of the present invention, the limit handle 5 adopts a lever structure, including a power arm located at the bottom of the U-shape and a resistance arm located inside the rotating plate 2, and the length of the power arm is greater than that of the resistance arm.

[0029] This technical solution uses a lever-type structure to set the power arm and the resistance arm of the limit handle 5, so as to achieve a relatively large rotation of the rotating plate 2 with relatively small force.

[0030] According to an embodiment of the present invention, a through hole is provided in the middle of the doubler plate 1 for the position limiting handle 5 to pass through, and a position limiting boss is provided at the through hole.

[0031] This technical solution realizes the stable installation and angle limitation of the limit handle 5 on the composite plate 1 by providing a through hole and a limit boss through which the limit handle 5 passes.

[0032] According to an embodiment of the present invention, the limiting boss is rectangular with a through hole in the middle.

[0033] This technical solution ensures the stable fit between the limiting boss and the limiting hole by using a rectangular limiting boss, while meeting the requirements of angle limiting.

[0034] According to an embodiment of the present invention, the limiting hole is arranged in a rectangular shape, and there is a certain gap between the limiting hole and the limiting boss, and the size of the gap meets the requirement of the limiting handle 5 rotating 15°.

[0035] This technical solution ensures that the limiting handle 5 can rotate smoothly within a range of 15 degrees by setting a gap between the limiting hole set in a rectangular shape and the limiting boss.

[0036] According to an embodiment of the present invention, the upper end of the torsion spring 4 is fixed to the middle portion of the sidewall strip of the slider 3 by bolts, and the lower end of the torsion spring 4 is fixed to the bottom edge of the doubler plate 1 by bolts.

[0037] This technical solution fixes the upper and lower ends of the torsion spring 4 to the slider 3 and the composite plate 1 respectively, providing a stable reset force for the lever-type angle limit handle, ensuring that the handle can automatically return to its initial position after rotation.

[0038] The usage process of the above embodiment is as follows:

[0039] like Figure 1 and Figure 2 As shown, during operation, the passenger applies force to the power arm of the limit handle 5, leveraging the principle of leverage to effortlessly rotate the rotating plate 2. When the rotating plate 2 rotates to the set angle, it contacts the side rail at the bottom of the slider 3, pushing the slider 3 downward. This force interacts with the limit boss on the inner side of the backplate 1 through the limit hole, limiting the rotation angle to 15°. After the force is released, the torsion spring 4 uses its elastic potential energy to push the slider 3 and rotating plate 2 back to their original position. Furthermore, the lever-like structure of the limit handle 5, the through-hole and limit boss on the backplate 1, the gap between the rectangular limit hole and the limit boss, and the fixing method of the torsion spring 4 all ensure stable installation, smooth rotation, and automatic reset of the handle.

[0040] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall fall within the scope of the present invention. Any changes or substitutions that can be easily conceived by a person of ordinary skill in the art within the technical scope disclosed in the present invention shall fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A lever-type angle limiting handle, characterized in that: The invention comprises a U-shaped limit handle (5), the end of which is sequentially inserted into the composite plate (1), the slider (3) and the rotating plate (2), and drives the rotating plate (2) to rotate synchronously; a bayonet for clamping the limit handle (5) is provided on the side of the rotating plate (2); a retaining strip matching the edge of the rotating plate (2) is provided on the bottom of the slider (3); the rotating plate (2) contacts the retaining strip and pushes the slider (3) to rotate downward; a limit hole is provided in the middle of the slider (3), and a limit boss matching the limit hole is provided on the inner side of the composite plate (1); the limit boss allows the limit hole to rotate downward at an angle of 15°; the slider (3) and the composite plate (1) are connected by a torsion spring (4).

2. The lever-type angle limiting handle according to claim 1, characterized in that: The limit handle (5) adopts a lever-type structure, comprising a power arm located at the bottom of the U-shape and a resistance arm located inside the rotating plate (2), wherein the length of the power arm is greater than that of the resistance arm.

3. The lever-type angle limiting handle according to claim 1, characterized in that: A through hole is provided in the middle of the composite plate (1) for the limited handle (5) to pass through, and a limited boss is provided at the through hole.

4. The lever-type angle limiting handle according to claim 1, characterized in that: The limiting boss is rectangular with a through hole in the middle.

5. The lever-type angle limiting handle according to claim 1, characterized in that: The limiting hole is arranged in a rectangular shape, and there is a certain gap between the limiting hole and the limiting boss, and the size of the gap satisfies the requirement that the limiting handle (5) rotates 15 degrees.

6. The lever-type angle limiting handle according to claim 1, characterized in that: The upper end of the torsion spring (4) is fixed to the middle part of the sidewall strip of the slider (3) by means of bolts, and the lower end of the torsion spring (4) is fixed to the bottom edge of the doubler plate (1) by means of bolts.

Images