A foot-locked universal wheel structure

Abstract

This invention provides a foot-operated locking universal wheel structure, including a wheel frame and a wheel rotatably mounted on the wheel frame; it also includes a locking mechanism and a drive mechanism. Several locking grooves are evenly distributed around the circumference of one axial side of the wheel. The drive mechanism drives the locking mechanism to reciprocate radially along the wheel, thereby engaging the locking part of the locking mechanism with the locking groove to restrict wheel rotation or disengaging from the locking groove to release the rotation restriction. This invention, through the sliding cooperation of the drive mechanism and the locking mechanism, and by using a foot-operated drive mechanism to make the locking mechanism reciprocate radially along the wheel to engage or disengage with it, achieves rapid switching between rotation locking and unlocking of the wheel. This is very convenient for users and solves the technical problem of existing universal wheels, which offer good flexibility and convenient multi-directional movement, but typically require locking the wheel when moving to the desired position.

Description

Technical Field

[0001] This utility model relates to the field of omnidirectional wheel technology, and in particular to a foot-operated locking omnidirectional wheel structure. Background Technology

[0002] Casters, also known as swivel casters, are characterized by their ability to rotate 360 ​​degrees horizontally under dynamic or static loads, allowing for flexible steering. Casters are widely used in various fields. With the development of society and the economy, people often install casters on the bottom of larger equipment for easier movement.

[0003] Chinese patent CN201820834492.8 discloses an directional caster wheel, including a roller bracket and a roller. The lower end of the roller bracket has two parallel clamping parts with axle holes. The roller is fixed between the clamping parts of the roller bracket by an axle and a fastening nut. An upper cover is provided above the roller bracket, with a first ring of ball bearings between the upper cover and the roller bracket. A lower bearing plate is provided below the roller bracket, with a second ring of ball bearings between the lower bearing plate and the roller bracket. A directional hole is also provided on the side of the roller bracket, and a directional rod that mates with the directional hole is provided on the upper cover horizontally to the directional hole. This utility model's caster wheel structure is simpler and more compact, and can be oriented via a directional rod mechanism, realizing the conversion between a caster wheel and a directional wheel, thus improving the application range of the caster wheel.

[0004] However, in existing technical solutions, omnidirectional wheels are flexible and convenient for moving in multiple directions. When moving to the desired position, the wheels usually need to be locked to meet usage requirements and ensure safety. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a foot-operated locking universal wheel structure. This structure features a sliding engagement between a drive mechanism and a locking mechanism. The locking mechanism reciprocates radially along the wheel via a foot-operated drive mechanism, engaging or disengaging with the wheel. This allows for rapid switching between locking and unlocking the wheel, making it very convenient for users. It solves the technical problem in existing technologies where universal wheels offer good flexibility and facilitate multi-directional movement, but locking the wheel is usually required when moving to the desired position.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A foot-operated locking universal wheel structure includes a wheel frame and a wheel rotatably mounted on the wheel frame; it also includes a locking mechanism and a driving mechanism. A plurality of locking grooves are evenly distributed around the circumference on one axial side of the wheel. The driving mechanism drives the locking mechanism to reciprocate along the radial direction of the wheel, so that the locking part of the locking mechanism matches and engages with the locking grooves to restrict the rotation of the wheel or disengages from the locking grooves to release the rotation restriction of the wheel.

[0008] Preferably, the wheel frame is provided with a first slide rail and a second slide rail intersecting each other. The driving mechanism includes a first sliding part slidably installed in the first slide rail, and a groove is recessed on the side A of the first sliding part facing the second slide rail. The locking mechanism is slidably installed in the second slide rail, and one end of the locking mechanism abuts against the wheel frame with a second elastic member along the sliding direction, and the other end abuts against the first sliding part. The first sliding part reciprocates along the first slide rail so that the side A or the groove faces the second slide rail. When the side A faces the second slide rail, the locking mechanism abuts against the side A, and at this time the locking part disengages from the locking groove. When the groove faces the second slide rail, the locking mechanism is pushed into the groove by the second elastic member, and at this time the locking part matches and engages with the locking groove.

[0009] Preferably, the locking mechanism includes a locking part and a second sliding part. The second sliding part is slidably installed in the second slide rail and cooperates with the first sliding part and the second elastic member. The locking part is connected to the second sliding part and protrudes out of the second slide rail to cooperate with the wheel.

[0010] Preferably, the first track is vertically arranged for the user to pedal, and the second track is arranged radially along the wheel.

[0011] Preferably, the drive mechanism further includes: a closed-loop annular groove, the annular groove being recessed on the side B of the first sliding part and having a first locking point and a second locking point; a locking rod, one end of which is rotatably mounted on the wheel frame and the other end is mounted in the annular groove to slide along the track of the annular groove; and a first elastic member, one end of the first sliding part abutting against the wheel frame in the sliding direction, and the other end extending out of the first track for the user to step on; when the first sliding part is stepped on once and then released, the locking rod slides from the first locking point and engages with the second locking point, while the first sliding part moves down to the side A facing the second track and is locked in this state; when the first sliding part is stepped on again and then released, the locking rod slides from the second locking point and engages with the first locking point, while the first sliding part moves up under the push of the first elastic member to the groove facing the second track and is locked in this state, thereby locking and unlocking the universal wheel by stepping on it.

[0012] Preferably, the annular groove includes a vertical groove section, a right upper inclined groove section, a left lower inclined groove section, and a left upper inclined groove section connected in sequence. The vertical groove section is located on the left side and is vertically arranged. The right upper inclined groove section is formed by tilting from the bottom end of the vertical groove section to the upper right. The left lower inclined groove section is formed by tilting from the top end of the right upper inclined groove section to the lower left. The left upper inclined groove section is formed by tilting from the bottom end of the left lower inclined groove section to the upper left and is connected to the top end of the vertical groove section.

[0013] Preferably, the connection point between the vertical groove section and the upper right inclined groove section is the first locking point, and the connection point between the lower left inclined groove section and the upper left inclined groove section is the second locking point.

[0014] Preferably, a limiting protrusion is provided on the upper right side of the second locking point to guide the end of the locking rod located at the first locking point to slide smoothly to the upper left inclined groove section.

[0015] Preferably, at the connection between the vertical groove section and the upper right inclined groove section, the bottom of the vertical groove section is higher than the bottom of the upper right inclined groove section; at the connection between the upper right inclined groove section and the lower left inclined groove section, the bottom of the upper right inclined groove section is higher than the bottom of the lower left inclined groove section; at the connection between the upper left inclined groove section and the vertical groove section, the bottom of the upper left inclined groove section is higher than the bottom of the vertical groove section, so as to form a stepped structure and guide the end of the locking rod to slide in a single direction within the annular groove.

[0016] Preferably, the vertical trough section, the upper right sloping trough section, the lower left sloping trough section, and the upper left sloping trough section are each configured as a smooth slope structure.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) This utility model sets up a sliding cooperation between the drive mechanism and the locking mechanism, and uses a foot pedal drive mechanism and an elastic automatic reset method to make the locking mechanism reciprocate along the radial direction of the wheel to engage or disengage with the wheel, thereby realizing the rapid switching between rotating locking and unlocking of the wheel, which is very convenient for users to operate.

[0019] (2) This utility model has a first slide rail and a second slide rail intersecting in the wheel frame. The first sliding part of the drive mechanism slides back and forth in the first slide rail, and the second sliding part of the locking mechanism slides along the radial direction of the wheel in the second slide rail. When the first sliding part slides down, it abuts against the second sliding part through its side A, thereby driving the second sliding part to slide until the locking part disengages from the locking groove. When the first sliding part slides up, it is pushed by the second elastic element to make the second sliding part slide in the opposite direction until the locking part is engaged in the locking groove. The structure is ingenious and the reciprocating motion process is stable.

[0020] (3) By setting a special structure of the annular slide groove in conjunction with the first elastic element, when the foot pedal action is repeated, the locking rod slides in the same direction in the annular slide groove and can be alternately locked at the first locking point or the second locking point, so that the first sliding part can be locked in the upper and lower positions when sliding in the first slide, thereby realizing the up and down reciprocating sliding process.

[0021] (4) This utility model provides a stepped structure between each section of the annular groove and a limit protrusion on the upper right of the second locking point, thereby guiding the locking rod to slide in the set direction, preventing reverse sliding, ensuring smooth and repeated operation, and high stability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a partial structural diagram of the present invention. Figure 1 ;

[0024] Figure 3 This is a top view of the overall structure of this utility model;

[0025] Figure 4 for Figure 3 Sectional view at point AA;

[0026] Figure 5 This is a partial structural diagram of the present invention. Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the wheel frame structure in this utility model;

[0028] Figure 7 This is a schematic diagram showing the cooperation between the first sliding part and the locking rod in this utility model;

[0029] Figure 8 This is a front view of the annular groove in this utility model;

[0030] Figure 9 This is a schematic diagram of the annular groove in this utility model. Detailed Implementation

[0031] 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.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1

[0034] like Figure 1-4 As shown, a foot-operated locking universal wheel structure includes a wheel frame 1 and a wheel 2 rotatably mounted on the wheel frame 1; it also includes a locking mechanism 3 and a driving mechanism 4. A plurality of locking grooves 21 are evenly distributed around the axial side of the wheel 2. The driving mechanism 4 drives the locking mechanism 3 to reciprocate radially along the wheel 2, so that the locking part 31 of the locking mechanism 3 matches and engages with the locking grooves 21 to restrict the rotation of the wheel 2 or disengages from the locking grooves 21 to release the rotation restriction of the wheel 2.

[0035] In this embodiment, the drive mechanism 4 and the locking mechanism 3 are slidably engaged. By stepping on the drive mechanism 4, the locking mechanism 3 is made to reciprocate along the radial direction of the wheel 2 to engage or disengage with the wheel 2, thereby realizing the rapid switching between rotating locking and unlocking of the wheel 2, which is very convenient for the user to operate.

[0036] As a preferred option, such as Figure 2 , 4 As shown in Figure 6, the wheel frame 1 is provided with a first slide rail 11 and a second slide rail 12 intersecting each other. The drive mechanism 4 includes a first sliding part 41 slidably installed in the first slide rail 11, as shown in Figure 6. Figure 5 , 7As shown, a groove 412 is recessed on the side A411 of the first sliding part 41 facing the second slide rail 12; the locking mechanism 3 is slidably installed in the second slide rail 12, and one end of the locking mechanism 3 along the sliding direction abuts against the wheel frame 1 with the second elastic member 30, and the other end abuts against the first sliding part 41; the first sliding part 41 reciprocates along the first slide rail 11 so that the side A411 or the groove 412 faces the second slide rail 12. When the side A411 faces the second slide rail 12, the locking mechanism 3 abuts against the side A411. At this time, the locking part 31 disengages from the locking groove 21. When the groove 412 faces the second slide rail 12, the locking mechanism 3 is pushed into the groove 412 by the second elastic member 30. At this time, the locking part 31 and the locking groove 21 are matched and engaged.

[0037] During operation, the first sliding part 41 slides along the first slide rail 11. When the side A411 is directly opposite the second slide rail 12, the locking mechanism 3 abuts against the side A411. At this time, the second elastic member 30 is compressed and stored, and the locking part 31 disengages from the locking groove 21, releasing the rotation restriction of the wheel 2. When the groove 412 is directly opposite the second slide rail 12, the second elastic member 30 releases its elastic force, and the locking mechanism 3 is pushed into the groove 412 by the second elastic member 30. At this time, the locking part 31 matches and engages with the locking groove 21, and the rotation of the wheel 2 is restricted.

[0038] It is worth noting that by intersecting the first slide rail 11 and the second slide rail 12 in the wheel frame 1, the first sliding part 41 of the drive mechanism 4 slides back and forth in the first slide rail 11, and the second sliding part 32 of the locking mechanism 3 slides radially along the wheel 2 in the second slide rail 12. When the first sliding part 41 slides down, it abuts against the second sliding part 32 through its side A411, thereby driving the second sliding part 32 to slide until the locking part 31 disengages from the locking groove 21. When the first sliding part 41 slides up, it is pushed by the second elastic member 30 to make the second sliding part 32 slide in the opposite direction until the locking part 31 is engaged in the locking groove 21. The structure is ingenious and the reciprocating motion is stable.

[0039] As a preferred option, such as Figure 2 As shown, the locking mechanism 3 includes a locking part 31 and a second sliding part 32. The second sliding part 32 is slidably installed in the second slide rail 12 and cooperates with the first sliding part 41 and the second elastic member 30. The locking part 31 is connected to the second sliding part 32 and protrudes out of the second slide rail 12 to cooperate with the wheel 2.

[0040] Preferably, the first slide rail 11 is vertically arranged for the user to step on, and the second slide rail 12 is arranged radially along the wheel 2.

[0041] As a preferred option, such as Figure 2 , 8As shown, the drive mechanism 4 further includes: a closed-loop annular groove 42, which is recessed on the side surface B413 of the first sliding part 41 and has a first locking point 421 and a second locking point 422; a locking rod 43, one end of which is rotatably mounted on the wheel frame 1 and the other end is mounted in the annular groove 42 to slide along the slide track of the annular groove 42; and a first elastic member 40, one end of the first sliding part 41 abutting against the wheel frame 1 in the sliding direction, and the other end extending out of the first slide track 11 for the user to enter. The foot pedal is used; when the first sliding part 41 is pressed once and then released, the locking rod 43 slides from the first locking point 421 and engages with the second locking point 422. At the same time, the first sliding part 41 moves down to the side A411 facing the second slide rail 12 and is locked in this state. When the first sliding part 41 is pressed again and then released, the locking rod 43 slides from the second locking point 422 and engages with the first locking point 421. At the same time, the first sliding part 41 moves up under the push of the first elastic member 40 to the groove 412 facing the second slide rail 12 and is locked in this state. Thus, the rotation locking and unlocking of the universal wheel can be performed by the foot pedal action.

[0042] As a preferred option, such as Figure 8 As shown, the annular groove 42 includes a vertical groove section 423, a right upper inclined groove section 424, a left lower inclined groove section 425, and a left upper inclined groove section 426 connected in sequence. The vertical groove section 423 is located on the left side and is vertically arranged. The right upper inclined groove section 424 is formed by tilting from the bottom end of the vertical groove section 423 to the upper right. The left lower inclined groove section 425 is formed by tilting from the top end of the right upper inclined groove section 424 to the lower left. The left upper inclined groove section 426 is formed by tilting from the bottom end of the left lower inclined groove section 425 to the upper left and is connected to the top end of the vertical groove section 423.

[0043] In this embodiment, by setting a special structure for the annular groove 42 in conjunction with the first elastic element 40, when the foot pedal action is repeated, the locking rod 43 slides in the same direction within the annular groove 42 and can alternately engage at the first locking point 421 or the second locking point 422. This allows the first sliding part 41 to be locked in two positions, namely, the side A411 facing the second slide 12 or the groove 412 facing the second slide 12, thereby realizing the up-and-down reciprocating sliding process.

[0044] It is worth noting that, by setting a specific bent annular groove structure, the locking rod 43 can lock and engage at two points, namely the first locking point 421 and the second locking point 422, when sliding along the annular groove 42 with the cooperation of the first elastic element 40. This locks the position of the first sliding part 41 and the position of the second sliding part 32, thereby keeping the wheel 2 in a rotation-restricted state or in a free-rotation state, respectively. The structure is ingenious, and the state control is stable, reliable, and safe.

[0045] Preferably, the connection point between the vertical groove section 423 and the upper right inclined groove section 424 is the first locking point 421, and the connection point between the lower left inclined groove section 425 and the upper left inclined groove section 426 is the second locking point 422.

[0046] Example 2

[0047] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0048] As a preferred option, such as Figure 8-9 As shown, a limiting protrusion 427 is provided on the upper right of the second locking point 422 to guide the end of the locking rod 43 located at the first locking point 421 to slide smoothly to the upper left inclined groove section 426.

[0049] In this embodiment, when the upper end of the locking rod 43 is located at the first locking point 421, and the foot is pressed on the first sliding part 41, combined with... Figure 4 As shown, the upper end of the locking rod 43 may rotate to the left or to the right. By setting a limiting protrusion 427 on the upper right of the second locking point 422, the locking rod 43 can be restricted from rotating to the right, so that it can only rotate to the left, that is, enter the upper left inclined groove section 426. This guides the locking rod 43 to slide in the set direction, prevents reverse sliding, and ensures smooth and repeated operation with high stability.

[0050] Example 3

[0051] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0052] As a preferred option, such as Figure 9As shown, at the connection between the vertical groove section 423 and the upper right inclined groove section 424, the bottom of the vertical groove section 423 is higher than the bottom of the upper right inclined groove section 424; at the connection between the upper right inclined groove section 424 and the lower left inclined groove section 425, the bottom of the upper right inclined groove section 424 is higher than the bottom of the lower left inclined groove section 425; at the connection between the upper left inclined groove section 426 and the vertical groove section 423, the bottom of the upper left inclined groove section 426 is higher than the bottom of the vertical groove section 423, so as to form a stepped structure and guide the end of the locking rod 43 to slide in a single direction within the annular groove 42.

[0053] Preferably, the vertical groove section 423, the upper right inclined groove section 424, the lower left inclined groove section 425, and the upper left inclined groove section 426 are each configured as a smooth slope structure.

[0054] In this embodiment, when the upper end of the locking rod 43 is located at the second locking point 422, the foot pedal is on the first sliding part 41, combined with... Figure 4 As shown, the upper end of the locking rod 43 will enter the vertical groove section 423. By setting the bottom of the vertical groove section 423 at its connection with the upper right inclined groove section 424 to be higher than the bottom of the upper right inclined groove section 424, a stepped structure is formed. This stepped structure can restrict the locking rod 43 from entering the vertical groove section 423, thus allowing it to deflect only to the right, i.e., enter the upper right inclined groove section 424. Similarly, the bottom of the upper right inclined groove section 424 at its connection with the lower left inclined groove section 425 is set to be higher than the bottom of the lower left inclined groove section 424. The bottom of the groove 5 and the setting of the bottom of the upper left inclined groove section 426 at the connection with the vertical groove section 423 being higher than the bottom of the vertical groove section 423 are all to guide the locking rod 43 to always slide in a closed loop along the direction of "vertical groove section 423 - upper right inclined groove section 424 - lower left inclined groove section 425 - upper left inclined groove section 426", that is, to ensure that the locking rod 43 can always slide along the set direction, prevent reverse sliding, and ensure smooth and repeated operation with high stability.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pedal locking type universal wheel structure comprising a wheel bracket (1) and a wheel (2) rotatably mounted to the wheel bracket (1); characterized in that, Also includes: The locking mechanism (3) and the driving mechanism (4) are provided. Several locking grooves (21) are evenly distributed around the axial side of the wheel (2). The driving mechanism (4) drives the locking mechanism (3) to move back and forth along the radial direction of the wheel (2), so that the locking part (31) of the locking mechanism (3) matches and engages with the locking groove (21) to restrict the rotation of the wheel (2) or disengages from the locking groove (21) to release the rotation restriction of the wheel (2).

2. The foot-locked caster structure according to claim 1, wherein The wheel frame (1) is provided with a first slide rail (11) and a second slide rail (12) intersecting each other. The drive mechanism (4) includes a first sliding part (41) slidably installed in the first slide rail (11). A groove (412) is recessed on the side A (411) of the first sliding part (41) facing the second slide rail (12). The locking mechanism (3) is slidably installed in the second slide rail (12). One end of the locking mechanism (3) along the sliding direction abuts against the wheel frame (1) with a second elastic element (30), and the other end abuts against the first sliding part (41). The first sliding part (41) slides back and forth along the first slide rail (11) so that the side surface A (411) or the groove (412) faces the second slide rail (12). When the side surface A (411) faces the second slide rail (12), the locking mechanism (3) abuts against the side surface A (411). At this time, the locking part (31) disengages from the locking groove (21). When the groove (412) faces the second slide rail (12), the locking mechanism (3) is pushed into the groove (412) by the second elastic member (30). At this time, the locking part (31) matches and engages with the locking groove (21).

3. The foot-actuated locking caster structure of claim 2, wherein, The locking mechanism (3) includes a locking part (31) and a second sliding part (32). The second sliding part (32) is slidably installed in the second slide rail (12) and cooperates with the first sliding part (41) and the second elastic member (30). The locking part (31) is connected to the second sliding part (32) and protrudes out of the second slide rail (12) to cooperate with the wheel (2).

4. The foot-actuated locking caster structure of claim 2, wherein, The first slide (11) is vertically arranged for the user to step on, and the second slide (12) is arranged radially along the wheel (2).

5. The foot-actuated locking caster structure of claim 2, wherein, The drive mechanism (4) also includes: A closed-loop annular groove (42) is recessed on the side surface B (413) of the first sliding part (41) and has a first locking point (421) and a second locking point (422). A locking rod (43), one end of which is rotatably mounted on the wheel frame (1) and the other end is mounted in the annular groove (42) to slide along the track of the annular groove (42); and The first elastic element (40) and the first sliding part (41) abut against the wheel frame (1) at one end along the sliding direction, and the other end extends out of the first slide rail (11) for the user to step on; When the foot is pressed once and then released, the locking rod (43) slides from the first locking point (421) and engages with the second locking point (422). At the same time, the first sliding part (41) moves down to the side A (411) facing the second slide rail (12) and is locked in this state. When the foot is pressed once more and then released, the locking rod (43) slides from the second locking point (422) and engages with the first locking point (421). At the same time, the first sliding part (41) moves up to the groove (412) under the push of the first elastic member (40) and is locked in this state. Thus, the rotation locking and unlocking of the universal wheel can be performed by the foot pedal action.

6. A foot-actuated lockable caster structure according to claim 5, wherein, The annular groove (42) includes a vertical groove section (423), a right upper inclined groove section (424), a left lower inclined groove section (425), and a left upper inclined groove section (426) connected in sequence. The vertical groove section (423) is located on the left side and is vertically arranged. The right upper inclined groove section (424) is formed by tilting from the bottom end of the vertical groove section (423) to the upper right. The left lower inclined groove section (425) is formed by tilting from the top end of the right upper inclined groove section (424) to the lower left. The left upper inclined groove section (426) is formed by tilting from the bottom end of the left lower inclined groove section (425) to the upper left and is connected to the top end of the vertical groove section (423).

7. A foot-actuated lockable caster construction according to claim 6, wherein, The connection point between the vertical groove section (423) and the upper right inclined groove section (424) is the first locking point (421), and the connection point between the lower left inclined groove section (425) and the upper left inclined groove section (426) is the second locking point (422).

8. The foot-actuated locking caster structure of claim 7, wherein, A limiting protrusion (427) is provided on the upper right of the second locking point (422) to guide the end of the locking rod (43) located at the first locking point (421) to slide smoothly to the upper left inclined groove section (426).

9. The foot-actuated locking caster structure of claim 6, wherein, At the connection between the vertical groove section (423) and the upper right inclined groove section (424), the bottom of the vertical groove section (423) is higher than the bottom of the upper right inclined groove section (424); at the connection between the upper right inclined groove section (424) and the lower left inclined groove section (425), the bottom of the upper right inclined groove section (424) is higher than the bottom of the lower left inclined groove section (425); at the connection between the upper left inclined groove section (426) and the vertical groove section (423), the bottom of the upper left inclined groove section (426) is higher than the bottom of the vertical groove section (423), so as to form a stepped structure and guide the end of the locking rod (43) to slide in a single direction within the annular groove (42).

10. The foot-actuated locking caster structure of claim 9, wherein, The vertical trough section (423), the upper right sloping trough section (424), the lower left sloping trough section (425), and the upper left sloping trough section (426) are each configured as a smooth sloping structure.

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