Foot-operated caster with a limiting mechanism

Abstract

The utility model relates to the technical field of trundle, and disclose a foot -operated trundle with limiting mechanism, solved the problem that the use stability of existing foot -operated trundle is not good, it includes the installation box, the inside of installation box is provided with the fixing frame, the middle position of fixing frame inside is provided with the connecting piece, and the both ends of fixing frame are symmetrically equipped with trundle movable support spare, and trundle movable support spare is connected with fixing frame through connecting shaft no.

Description

Technical Field

[0001] This utility model belongs to the field of caster technology, specifically a foot-operated caster with a limit mechanism. Background Technology

[0002] In the fields of industrial equipment, medical devices, and logistics transportation, casters are core components of mobile devices, and their braking performance directly affects the stability and operational safety of the equipment. Traditional pedal-type casters mainly achieve braking by driving the brake pads to rub against the wheel surface through the pedal. When the equipment needs to be tilted or prevented from sliding sideways, the stability is not good, and the mechanical mechanism is prone to limit failure due to frequent pedaling. Therefore, this application improves the existing casters and proposes a pedal-type caster with a limit mechanism. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a foot-operated caster with a limit mechanism, which effectively solves the problem of poor stability of existing foot-operated casters.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a foot-operated caster with a limiting mechanism, comprising a mounting box, a fixed frame inside the mounting box, a connecting member in the middle of the fixed frame, and symmetrical caster movable support members at both ends of the fixed frame. The middle of the caster movable support member is rotatably connected to the fixed frame via a connecting shaft one. A caster is rotatably mounted on the end of the caster movable support member away from the fixed frame, and the end of the caster movable support member near the fixed frame is rotatably connected to the connecting member via a rotating shaft. A return spring is fixedly mounted on the end of one of the caster movable support members near the connecting member, and the top of the return spring is connected to the mounting box. A limiting mechanism is provided between the connecting member and the fixed frame. A foot pedal is hinged to the top of the connecting member, and the foot pedal is rotatably connected to the fixed frame via a connecting shaft two. A foot pedal is mounted on the end of the foot pedal rod away from the connecting member.

[0005] The limiting mechanism consists of a limiting component, a spring pressure plate, and a limiting spring. The limiting component is hinged to the connecting component and passes through one side of the fixed frame. The limiting spring is connected to the connecting component through the spring pressure plate, and the spring pressure plate is fixedly connected to the connecting component by bolts. The limiting component consists of a swing plate and a limiting shaft. The bottom end of the swing plate is hinged to the connecting component, and the limiting shaft is fixedly connected to the top end of one side of the swing plate. A limiting groove is opened on the side of the bottom of the swing plate. The limiting spring consists of an installation section, an elbow clamping section, and a swing limiting section. The elbow clamping section and the swing limiting section are located at both ends of the installation section, respectively. A V-shaped limiting through groove matching the limiting shaft is provided in the middle position on one side of the fixed frame.

[0006] Preferably, both ends of the connecting shaft are provided with rotating washers located between the fixing frame and the connecting member.

[0007] Preferably, foot pads are fixedly provided at both ends of the bottom of the mounting box, and the bottom end of the foot pads has a serrated structure.

[0008] Preferably, two mounting supports are fixedly installed on both sides of the fixing frame, and several L-shaped mounting seats that match the mounting supports are fixedly installed inside the mounting box. The L-shaped mounting seats are connected to the mounting supports by bolts.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] (1) In operation, by setting up a fixed frame, connecting parts, caster movable support parts, connecting shaft one, caster, rotating shaft, return spring, foot pedal rod, foot pedal, and setting up a limiting mechanism composed of limiting parts, spring pressure plate and limiting spring, the caster can be raised and lowered by foot pedal, so that the caster can contact or separate from the ground, thereby realizing movement control, and the limiting mechanism realizes the limiting function to improve the overall stability;

[0011] (2) By setting a rotating washer, the limiting function can be realized and the stability of the connecting parts can be improved. By setting a foot pad, the foot pad can be made to contact the ground after the caster rises, thus achieving a stable support function. By setting an installation support and an L-shaped installation seat, the stability of the connection between the fixed frame and the installation box can be improved. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram:

[0014] Figure 1 This is a schematic diagram of the foot-operated caster structure with a limit mechanism according to this utility model;

[0015] Figure 2 This is an exploded view of the foot-operated caster with a limiting mechanism according to this utility model;

[0016] Figure 3 This is one of the partial structural diagrams of the foot-operated caster with a limit mechanism of this utility model;

[0017] Figure 4 This is the second partial structural diagram of the foot-operated caster with a limit mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram of the mounting box structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the limiting mechanism of this utility model;

[0020] Figure 7 This is a schematic diagram of the open state of the foot-operated caster with a limit mechanism of this utility model.

[0021] Figure 8 This is a schematic diagram of the folded state of the foot-operated caster with a limit mechanism according to this utility model.

[0022] In the diagram: 1. Mounting box; 2. Fixing frame; 3. Connecting piece; 4. Caster movable support piece; 5. Connecting shaft one; 6. Caster; 7. Rotating shaft; 8. Return spring; 9. Limiting mechanism; 10. Foot pedal pull rod; 11. Connecting shaft two; 12. Foot pedal; 14. Limiting piece; 15. Spring pressure plate; 16. Limiting spring; 17. Swing plate; 18. Limiting shaft; 19. Limiting groove; 20. Mounting section; 21. Elbow clamping section; 22. Swinging limiting section; 23. V-shaped limiting through groove; 24. Rotating washer; 25. Foot pad; 26. Mounting support; 27. L-shaped mounting base. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Depend on Figures 1 to 8This invention discloses a foot-operated caster with a limiting mechanism, comprising a mounting box 1, a fixing frame 2 inside the mounting box 1, a connecting member 3 in the middle of the fixing frame 2, and symmetrically arranged caster movable support members 4 at both ends of the fixing frame 2. The middle of the caster movable support member 4 is rotatably connected to the fixing frame 2 via a connecting shaft 5. A caster 6 is rotatably mounted at the end of the caster movable support member 4 away from the fixing frame 2, and the end of the caster movable support member 4 near the fixing frame 2 is rotatably connected to the connecting member 3 via a rotating shaft 7. A return spring 8 is fixedly mounted at the end of one of the caster movable support members 4 near the connecting member 3, and the top of the return spring 8 is connected to the mounting box 1. A limiting mechanism 9 is provided between the connecting member 3 and the fixing frame 2. A foot pedal pull rod 10 is hinged to the top of the connecting member 3, and the foot pedal pull rod 10 is rotatably connected to the fixing frame 2 via a connecting shaft 11. A foot pedal 12 is provided at the end of the pull rod 10 away from the connector 3. The limiting mechanism 9 is composed of a limiting member 14, a spring pressure plate 15 and a limiting spring 16. The limiting member 14 is hinged to the connector 3 and passes through one side of the fixed frame 2. The limiting spring 16 is connected to the connector 3 through the spring pressure plate 15. The spring pressure plate 15 is fixedly connected to the connector 3 by bolts. The limiting member 14 is composed of a swing plate 17 and a limiting shaft 18. The bottom end of the swing plate 17 is hinged to the connector 3. The limiting shaft 18 is fixedly connected to the top end of one side of the swing plate 17. A limiting groove 19 is opened on the side of the bottom of the swing plate 17. The limiting spring 16 is composed of an installation section 20, an elbow clamping section 21 and a swing limiting section 22. The elbow clamping section 21 and the swing limiting section 22 are located at the two ends of the installation section 20 respectively. A V-shaped limiting through groove 23 matching the limiting shaft 18 is provided in the middle position on one side of the fixed frame 2.

[0025] Initially, the limiting shaft 18 is located at point B inside the V-shaped limiting groove 23, and the caster 6 is in the retracted state. Stepping on the foot pedal 12 causes the foot pedal lever 10 to rotate around the connecting shaft 2 11. The foot pedal lever 10 causes the connecting piece 3 to move upwards, and the connecting piece 3 causes the caster movable support 4 to rotate around the connecting shaft 1 5. Using leverage, this causes the caster 6 to move downwards, making it contact the ground. At this time, the swing limiting segment 22 on the limiting spring 16 applies a pushing force to the limiting shaft 18. As the foot pedal 12 is pressed down, the oscillating plate 17 swings and moves to point A in the V-shaped limiting groove 23 under the elastic action of the limiting spring 16. When the foot pedal 12 is pressed down again, the limiting shaft 18 slides upward along the V-shaped limiting groove 23, and the elbow clamping section 21 moves into the limiting groove 19 on the oscillating plate 17. When the foot pedal 12 is released, the limiting shaft 18 falls down and moves to point B under the action of the inclined surface of the V-shaped limiting groove 23. At this time, the elbow clamping section 21 separates from the limiting groove 19 and returns to the initial state.

[0026] Both ends of the connecting shaft 5 are provided with rotating washers 24 located between the fixing frame 2 and the connecting piece 3, which can achieve a limiting function and improve the stability of the connecting piece 3;

[0027] Foot pads 25 are fixedly installed at both ends of the bottom of the mounting box 1. The bottom of the foot pads 25 has a serrated structure, which can provide stable support when in contact with the ground.

[0028] Two mounting supports 26 are fixedly installed on both sides of the fixing frame 2. Several L-shaped mounting seats 27 that match the mounting supports 26 are fixedly installed inside the mounting box 1. The L-shaped mounting seats 27 are connected to the mounting supports 26 by bolts, which can improve the stability of the connection between the fixing frame 2 and the mounting box 1.

[0029] In operation, the system includes a fixed frame, connectors, caster movable support components, connecting shaft, caster, rotating shaft, return spring, foot pedal, foot pedal, and a limiting mechanism consisting of a limiting component, spring pressure plate, and limiting spring. The system allows for control of caster lifting and lowering via foot pedal, enabling the caster to contact or separate from the ground for movement control. The limiting mechanism provides a limiting effect, improving overall stability. A rotating washer provides a limiting effect, enhancing the stability of the connectors. Foot pads ensure stable support after the caster rises, allowing them to contact the ground. Mounting supports and L-shaped mounting bases improve the stability of the connection between the fixed frame and the mounting box.

Claims

1. A foot-operated caster with a limiting mechanism, comprising a mounting box (1), characterized in that: The mounting box (1) is equipped with a fixing frame (2) inside. A connector (3) is located in the middle of the fixing frame (2). Caster movable support members (4) are symmetrically arranged at both ends of the fixing frame (2). The middle position of the caster movable support member (4) is rotatably connected to the fixing frame (2) through a connecting shaft (5). A caster (6) is rotatably arranged at the end of the caster movable support member (4) away from the fixing frame (2). The end of the caster movable support member (4) close to the fixing frame (2) is connected to the connector (3) through a rotating shaft (7). 3) Rotary connection, one of the caster movable support parts (4) is fixedly provided with a return spring (8) at one end near the connector (3), the top of the return spring (8) is connected to the mounting box (1), a limit mechanism (9) is provided between the connector (3) and the fixed frame (2), a foot pedal rod (10) is hinged at the top of the connector (3), the foot pedal rod (10) is rotatably connected to the fixed frame (2) through the connecting shaft two (11), and a foot pedal (12) is provided at the end of the foot pedal rod (10) away from the connector (3); The limiting mechanism (9) consists of a limiting member (14), a spring pressure plate (15), and a limiting spring (16). The limiting member (14) is hinged to the connecting member (3) and passes through one side of the fixed frame (2). The limiting spring (16) is connected to the connecting member (3) through the spring pressure plate (15). The spring pressure plate (15) is fixedly connected to the connecting member (3) by bolts. The limiting member (14) consists of a swing plate (17) and a limiting shaft (18). The bottom end of the swing plate (17) is hinged to the connecting member (3). The limiting shaft (18) is fixedly connected to the top of one side of the swing plate (17). A limiting groove (19) is opened on the side of the bottom of the swing plate (17). The limiting spring (16) is composed of the mounting section (20), the elbow clamping section (21) and the swing limiting section (22). The elbow clamping section (21) and the swing limiting section (22) are located at the two ends of the mounting section (20) respectively. A V-shaped limiting through groove (23) matching the limiting shaft (18) is provided in the middle position on one side of the fixing frame (2).

2. A foot-operated caster with a limit mechanism according to claim 1, characterized in that: Both ends of the connecting shaft (5) are provided with rotating washers (24) located between the fixing frame (2) and the connecting piece (3).

3. A foot-operated caster with a limit mechanism according to claim 1, characterized in that: Both ends of the bottom of the mounting box (1) are fixedly provided with foot pads (25), and the bottom end of the foot pads (25) has a serrated structure.

4. A foot-operated caster with a limit mechanism according to claim 1, characterized in that: Two mounting supports (26) are fixedly installed on both sides of the fixed frame (2). Several L-shaped mounting seats (27) that match the mounting supports (26) are fixedly installed inside the mounting box (1). The L-shaped mounting seats (27) are connected to the mounting supports (26) by bolts.

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