Linkage mechanism for mobile caster

Abstract

The application relates to the technical field of mobile casters, and provides a linkage mechanism for mobile casters, which comprises a mobile body and casters, the casters are arranged in an array and are arranged at fulcrum positions of the mobile body, and the linkage mechanism further comprises incomplete gears, a rack, a control rod and support seats, the support seats are arranged at four positions and are fixedly connected to the mobile body and close to each of the casters, the incomplete gears are fixedly connected to the control rod, and the incomplete gears are engaged with the rack. When the control rod rotates, the control rod actively controls the adjacent rotating wheels, the incomplete gears drive the rack to move, the rack drives the incomplete gears on the other side to rotate in the process of moving, the control rod drives the rotating wheels, and finally the rotating wheels control the four casters to start and stop uniformly in the process of rotating, so that the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of mobile caster technology, and in particular to a linkage mechanism for mobile casters. Background Technology

[0002] Casters are widely used in the field of mobile devices, especially in medical transfer vehicles, greatly improving the mobility of various equipment. Whether it's transportation equipment in industrial production or furniture and shopping carts in daily life, casters play an indispensable role. With technological advancements and increasing demands for user experience, the design and function of casters are constantly being improved to meet the needs of different scenarios. They enable previously fixed devices to move flexibly, improving work efficiency and reducing labor intensity, leading to their widespread application across various industries.

[0003] However, this traditional caster start-stop control method has significant drawbacks. Because each caster needs to be individually controlled by pedaling, it results in low operational efficiency and is extremely inconvenient to use. Especially in scenarios requiring frequent start-stop of mobile devices, operators need to spend a considerable amount of time and energy operating the casters, severely impacting work efficiency. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a linkage mechanism for mobile casters. The linkage mechanism for movable casters provided in this application adopts the following technical solution: A linkage mechanism for movable casters includes a movable body and casters. At least four casters are arranged in an array and mounted at the fulcrum of the movable body. The mechanism also includes an incomplete gear, a rack, a control lever, and support seats. Four support seats are respectively fixed to the movable body and close to each caster. The incomplete gear is fixedly connected to the control lever and meshes with the rack. The control lever is movably connected to the movable body. Each caster has a rotating wheel for controlling start and stop. The two ends of the control lever are respectively connected to adjacent rotating wheels on the left and right sides. The rack slides on the support seats on the same front and rear sides and is arranged along the length of the movable body. When the control lever rotates, the rotating wheel rotates to control the start and stop of the casters.

[0005] By adopting the above technical solution, when the control lever rotates, it actively controls the adjacent casters and drives the rack to move through the incomplete gear. During the movement of the rack, it drives the incomplete gear on the other side to rotate, which in turn drives the casters through the control lever. Finally, the casters control the four casters to start and stop at the same time during the rotation, avoiding the need to step on each caster separately and improving operating efficiency.

[0006] Preferably, the caster wheel has an internal hexagonal hole, and the control rod has a hexagonal cross-section. By adopting the above technical solution, the internal hexagonal hole in the caster wheel and the hexagonal cross-section of the control rod enhance the stability of the connection between the control rod and the caster wheel and the reliability of the transmission, enabling the control rod to drive the caster wheel to rotate more precisely when rotating, thereby controlling the start and stop of the caster wheel more effectively.

[0007] Preferably, the rack includes a first connecting segment and a second connecting segment. The first connecting segment has several through holes along its length, and the second connecting segment is provided with a pin that is inserted into the through holes. The first connecting segment slides on the support base, and the incomplete gear meshes with the first connecting segment.

[0008] By adopting the above technical solution, the rack is fixed by connecting the first connecting section and the second connecting section with a pin and a through hole, which makes it easy to adjust the length of the rack to meet the installation requirements of different moving bodies.

[0009] Preferably, a baffle is fixedly provided above the first connecting section of the support base.

[0010] By adopting the above technical solution, a baffle is fixedly installed above the first connecting section of the support base, which can prevent the first connecting section from detaching from the support base during the sliding process and ensure the stability of the rack sliding.

[0011] Preferably, the baffle is detachably connected to the support base.

[0012] By adopting the above technical solution, the baffle and the support base can be detachably connected, which facilitates the maintenance of the linkage mechanism and the replacement of parts.

[0013] Preferably, it further includes a drive rod, which is fixed to the periphery of the control rod.

[0014] By adopting the above technical solution, the drive rod is fixed to the periphery of the control rod, making it easier for the user to operate the control rod to rotate, thereby making it easier to control the start and stop of the casters.

[0015] Preferably, at least one rack is provided.

[0016] By adopting the above technical solution, at least one rack is set, which can ensure the normal operation of the linkage mechanism and realize the linkage start and stop control of the caster.

[0017] Preferably, a pedal is also provided on the side of the control lever that passes through the caster, and the pedal is fixedly connected to the caster.

[0018] By adopting the above technical solution, a pedal is set on the side of the control lever that passes through the caster and is fixedly connected to the caster. This allows users to easily operate the control lever by stepping on the pedal, thereby controlling the start and stop of the caster. The control lever can be selectively operated, making the operation more convenient.

[0019] In summary, this application includes at least one of the following beneficial effects: When the control lever rotates, it actively controls the adjacent casters and simultaneously drives the rack to move through the incomplete gear. As the rack moves, it drives the incomplete gear on the other side to rotate, which in turn drives the casters through the control lever. Ultimately, the casters control the four casters to start and stop at the same time during rotation, avoiding the need to step on each caster individually and improving operational efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 yes Figure 1 A schematic diagram of the structure of the hidden protective cover 9; Figure 3 yes Figure 2 A magnified view of part A in the middle; Figure 4 yes Figure 2 A magnified view of part B in the diagram.

[0021] Explanation of reference numerals in the attached figures: 1. Moving body; 2. Casters; 21. Rotary wheel; 3. Incomplete gear; 4. Rack; 41. First connecting section; 42. Second connecting section; 43. Through hole; 44. Pin; 5. Control lever; 6. Support base; 61. Baffle; 7. Drive lever; 8. Pedal. Detailed Implementation

[0022] The technical solutions of this application will now be described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can be embodied in many different forms and is not limited to the embodiments described herein.

[0023] In the representation of this application, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0025] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection; a detachable connection; an integral part; or a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0026] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and integrate the different embodiments or examples shown in this application, as well as the features of those embodiments or examples.

[0027] Example: A linkage mechanism for movable casters, see below. Figure 1 , Figure 2 , Figure 3 and Figure 4 It includes a movable body 1 and casters 2. There are four casters 2, which are arranged in a rectangular array and installed at the four support points on the bottom of the movable body 1, that is, at the four corners of the bottom of the movable body 1, so as to ensure the stable support and flexible movement of the movable body 1.

[0028] Specifically, to achieve the linkage control of caster 2, the mechanism also includes an incomplete gear 3, a rack 4, a control lever 5, and a support base 6. Four support bases 6 are provided, each fixed to the bottom of the movable body 1 by bolts or welding, and each support base 6 is located close to the corresponding caster 2. The control lever 5 is rotatably mounted on a preset mounting position on the movable body 1, enabling movable switching. Caster 2 has a rotating wheel 21 for controlling its start and stop. This rotating wheel 21 is linked to the braking structure of caster 2. When the rotating wheel 21 rotates, it can control the start and stop rotation of caster 2. It should be noted that the caster 2 structure in this application is prior art; reference can be made to the disclosed technology CN203920257U, "Central Control Single-Wheel Caster 2." The specific structure and control process will not be elaborated further.

[0029] The two ends of the control lever 5 are connected to the two adjacent rotating wheels 21 on the left and right respectively. Specifically, the rotating wheels 21 have internal hexagonal holes, and the cross-section of the part where the control lever 5 connects to the rotating wheels 21 is hexagonal. The end of the control lever 5 is inserted into the internal hexagonal hole of the rotating wheel 21. This structure enhances the stability of the connection between the control lever 5 and the rotating wheels 21 and the reliability of the transmission, so that the control lever 5 can drive the rotating wheels 21 to rotate more accurately when rotating, thereby effectively controlling the start and stop of the caster 2.

[0030] An incomplete gear 3 is fixedly connected to the control lever 5 and meshes with the rack 4. The rack 4 is arranged along the length of the moving body 1 and slides on the support base 6 on the same side at the front and rear. Specifically, the rack 4 includes a first connecting section 41 and a second connecting section 42. The first connecting section 41 has several through holes 43 along its length, and one end of the second connecting section 42 is provided with a pin 44. The pin 44 can be selectively inserted into different through holes 43 to adjust the overall length of the rack 4, which is convenient for adapting to the installation requirements of moving bodies 1 with different length specifications. The first connecting section 41 slides on the support base 6, and the incomplete gear 3 meshes with the teeth on the first connecting section 41.

[0031] To prevent the first connecting section 41 from detaching from the support base 6 during sliding, a baffle 61 is fixed above the first connecting section 41 by screws. The baffle 61 and the support base 6 form a detachable connection. When it is necessary to maintain the rack 4 or the support base 6 or replace parts, the baffle 61 can be easily removed for operation.

[0032] To facilitate user operation of the control lever 5, the mechanism also includes a drive lever 7, which is welded to the periphery of the control lever 5. The user can rotate the control lever 5 by turning the drive lever 7. Additionally, a pedal 8 is provided on the side of the control lever 5 that passes through the caster 2. The pedal 8 is fixedly connected to the wheel 21 of the caster 2. The user can also rotate the wheel 21 and the control lever 5 by stepping on the pedal 8. This, combined with the drive lever 7, creates multiple operating modes, enhancing ease of operation.

[0033] In this embodiment, one rack 4 is provided to meet the normal working requirements of the linkage mechanism, or two racks can be provided to increase transmission stability. Both methods can achieve linkage start and stop control of the caster 2.

[0034] In this embodiment, the mobile body 1 is provided with a protective cover 9 in the linkage mechanism area to ensure safety during use.

[0035] The implementation principle of this application embodiment is as follows: When it is necessary to control the start and stop of the casters 2, the user can rotate one of the control levers 5 by moving the drive lever 7 or stepping on the pedal 8. When the control lever 5 rotates, its two ends directly drive the two adjacent rotating wheels 21 on the left and right to rotate, thereby realizing the start and stop control of these two casters 2. At the same time, the incomplete gear 3 on the control lever 5 rotates together with it. Since the incomplete gear 3 meshes with the first connecting section 41 of the rack 4, it will drive the rack 4 to slide along the length direction of the moving body 1 on the support seat 6. During the sliding process of the rack 4, it will drive the incomplete gear 3 meshing with it on the other side to rotate. The incomplete gear 3 will then drive the corresponding control lever 5 to rotate. This control lever 5 will then drive the other two rotating wheels 21 connected to its two ends to rotate, ultimately realizing the unified start and stop control of the four casters 2.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A linkage mechanism for movable casters, comprising a movable body (1) and casters (2), wherein at least four casters (2) are provided, and the casters (2) are arranged in an array and installed at the fulcrum position of the movable body (1), characterized in that: It also includes an incomplete gear (3), a rack (4), a control lever (5), and a support base (6). The support base (6) has four parts that are fixed to the moving body (1) and close to each of the casters (2). The incomplete gear (3) is fixedly connected to the control lever (5). The incomplete gear (3) meshes with the rack (4). The control lever (5) is movably connected to the moving body (1). The caster (2) has a rotating wheel (21) for controlling start and stop. The two ends of the control lever (5) are respectively connected to the left and right adjacent rotating wheels (21). The rack (4) slides on the support base (6) on the same side at the front and back and is set along the length direction of the moving body (1). When the control lever (5) rotates, the rotating wheel (21) rotates to control the start and stop of the caster (2).

2. The linkage mechanism for movable casters according to claim 1, characterized in that: The rotating wheel (21) has an internal hexagonal hole, and the control rod (5) has a hexagonal cross-section.

3. The linkage mechanism for movable casters according to claim 1, characterized in that: The rack (4) includes a first connecting section (41) and a second connecting section (42). The first connecting section (41) has several through holes (43) along its length. The second connecting section (42) is provided with a pin (44), which is inserted into the through hole (43). The first connecting section (41) slides on the support base (6), and the incomplete gear (3) meshes with the first connecting section (41).

4. The linkage mechanism for a movable caster according to claim 3, characterized in that: The support base (6) is fixedly provided with a baffle (61) above the first connecting section (41).

5. The linkage mechanism for movable casters according to claim 4, characterized in that: The baffle (61) is detachably connected to the support base (6).

6. The linkage mechanism for a movable caster according to claim 1, characterized in that: It also includes a drive rod (7) which is fixed to the periphery of the control rod (5).

7. The linkage mechanism for a movable caster according to claim 1, characterized in that: The rack (4) has at least one tooth.

8. The linkage mechanism for a movable caster according to claim 1, characterized in that: The control lever (5) passes through one side of the caster (2) and is also provided with a pedal (8), which is fixedly connected to the caster (2).

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