Central brake system

Abstract

The application provides a central brake system, comprising a support plate, a plurality of brake casters and a brake assembly, the brake casters being connected with the support plate; the brake assembly comprises a central rotating rod, a brake rotating rod and a connecting rod, the central rotating rod and the brake rotating rod are rotationally matched with the support plate, the brake casters are distributed on both sides of the central rotating rod in the radial direction, the brake rotating rod corresponds to the brake caster one by one, one end of the brake rotating rod is connected with the corresponding brake caster, the other end of the brake rotating rod is connected with the central rotating rod through the connecting rod; when the central rotating rod rotates around its own axis, it can drive each brake rotating rod to rotate around its own axis at the same time, the brake rotating rod rotates to lock or unlock the brake of the brake caster; the locking position and the unlocking position are defined along the rotating track of the central rotating rod, when the central rotating rod rotates to the unlocking position or the locking position, it can drive each brake rotating rod to lock or unlock the brake of the connected brake caster at the same time. The application can make each brake caster brake synchronously or release the brake.

Description

Technical Field

[0001] This invention relates to the field of trolley brakes, and more specifically to a central braking system. Background Technology

[0002] A trolley is a mobile mechanism used to transport equipment, and it is commonly found in medical equipment.

[0003] In existing technology, trolleys are typically equipped with brake casters. By rotating the brake component in the brake caster, the brake on the caster can be locked or unlocked, thereby braking or releasing the caster. A trolley usually has multiple brake casters, and in existing technology, each brake caster is typically controlled individually, rather than being controlled uniformly. The above-mentioned problems are technical issues that urgently need to be solved in this field. Summary of the Invention

[0004] The main technical problem solved by this invention is how to control the simultaneous braking or release of all casters on a control vehicle.

[0005] According to a first aspect, this application provides a central braking system, comprising:

[0006] Support plate;

[0007] Multiple brake casters are provided, and the brake casters are connected to the support plate.

[0008] A brake assembly includes a central rotating rod, a brake rotating rod, and a connecting rod. Both the central rotating rod and the brake rotating rod are rotatably engaged with the support plate. Brake casters are distributed on both sides of the central rotating rod in the radial direction. Each brake rotating rod corresponds to a brake caster. One end of each brake rotating rod is connected to the corresponding brake caster, and the other end of each brake rotating rod is connected to the central rotating rod through the connecting rod.

[0009] When the central rotating rod rotates around its own axis, it can drive each of the brake rotating rods to rotate around its own axis simultaneously via the connecting rod. The brake rotating rods lock or unlock the brakes of the brake casters by rotating. A locking position and an unlocking position are defined along the rotation trajectory of the central rotating rod. When the central rotating rod rotates to the unlocking position or the locking position, it can drive each of the brake rotating rods to lock or unlock the brakes of the brake casters connected to it simultaneously.

[0010] In one optional embodiment, the connecting rod includes a connecting portion and a driving portion, the connecting portion is fixedly connected to the driving portion, the brake lever is fixedly connected to the driving portion, and the connecting portion and the central lever are rotatably engaged in the axial direction of the central lever.

[0011] In one optional embodiment, the drive unit includes a first segment and a second segment, the first segment being fixedly connected to the second segment, the first segment being connected to the brake lever, the second segment extending from the brake lever toward the central lever and being connected to the connecting portion, the second segment having an angle with the connecting portion, and the brake lever having an angle with the central lever.

[0012] In one alternative embodiment, the brake casters include at least four, with the same number of brake casters on both radially sides of the central swivel.

[0013] In an optional embodiment, a pedal is further included, which is disposed on one side of the support plate and is connected to the central rotating rod to drive the central rotating rod to rotate.

[0014] In an optional embodiment, the support plate is further provided with a limit block located on one side of the pedal; the limit block is used to block the pedal so that it can only drive the central rotating rod to rotate within the range between the unlock position and the locked position.

[0015] In one alternative embodiment, the pedal is provided with a rotation indicator configured to indicate the rotation direction of the central lever toward the unlock position and the locking position.

[0016] In an optional embodiment, a status display mechanism is further included. The status display mechanism includes a display window disposed on the support plate and a display component located below the display window. The display component is provided with a status indicator. The display component is connected to the central rotating rod through a transmission component. When the central rotating rod rotates, the transmission component can drive the display component to move, so that the status indicator is opposite to or offset from the display window. The status indicator is used to indicate whether the central rotating rod is in the locked position and / or unlocked position.

[0017] In one optional embodiment, the status identifier includes a locked identifier and an unlocked identifier;

[0018] When the central lever is in the locked position, the locking indicator is facing the display window; when the central lever is in the unlocked position, the unlocking indicator is facing the display window.

[0019] In one optional embodiment, the support plate extends outward to form a plurality of first extension ends and a plurality of second extension ends. The first extension ends and the second extension ends are respectively disposed on both sides of the central rotating rod radially. One end of each of the first extension ends and the second extension ends is connected to the support plate, and the other end of each of the first extension ends and the second extension ends is away from the support plate. The brake caster is disposed at the end of each of the first extension ends and each of the second extension ends away from the support plate. The length of the second extension end is greater than the length of the first extension end.

[0020] According to the central braking system of the above embodiment, this application sets a central rotating rod and brake rotating rods that correspond to and are connected to each caster. When the central rotating rod rotates, it can simultaneously drive each brake rotating rod to rotate, thereby enabling each brake caster to brake or release the brake synchronously. Attached Figure Description

[0021] Figure 1 This is a perspective view of one embodiment of the present application;

[0022] Figure 2 This is a bottom view of one embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the internal structure of one embodiment of this application;

[0024] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 5 This is a top view of one embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the display components in one embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the display component after removing the guide groove in one embodiment of this application;

[0028] Figure 8a This is a side view of one embodiment of this application;

[0029] Figure 8b This is a side view of another embodiment of this application;

[0030] Figure 8c This is a side view of another embodiment of this application;

[0031] Figure 8d This is a side view of another embodiment of this application.

[0032] Reference numerals: Support plate 1, Limiting block 11, First extension end 12, Second extension end 13, Brake caster 2, Brake component 21, Central rotating rod 31, Drive port 311, Brake rotating rod 32, Connecting rod 33, Connecting part 331, Drive part 332, First section 3321, Second section 3322, Pedal 4, Rotation mark 41, Unlocking pattern 411, Locking pattern 412, Display window 51, Status mark 52, Unlocking mark 521, Locking mark 522, Guide groove 53, Display hole 531, Display slider 54, First transmission rod 55, Second transmission rod 56. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0034] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0035] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0036] like Figure 1 As shown, this application discloses a central braking system, which includes: a support plate 1, a brake caster 2, and a brake assembly.

[0037] The support plate 1 is used to support medical equipment. The top of the support plate 1 can be a rectangular or circular planar geometric shape, providing mechanical support for medical equipment such as ventilators. The aforementioned braking assembly is used to control the individual brake casters 2, enabling all brake casters 2 connected to the support plate 1 to lock or unlock simultaneously.

[0038] like Figure 2 As shown, the aforementioned brake assembly is mounted on the bottom of the support plate 1, and it consists of a central rotating rod 31, a brake rotating rod 32, and a connecting rod 33. See also the exemplary embodiment. Figure 2 and Figure 3 As shown, the central rotating rod 31 has rotating shafts at both ends, and the bottom of the support plate 1 has several fixed brackets protruding from the bottom surface of the support plate 1. The rotating shafts at both ends of the central rotating rod 31 are respectively installed in the two fixed brackets through bearings.

[0039] Continue reading Figure 2 and Figure 3 As shown, the brake lever 32 corresponds one-to-one with the brake caster 2. One end of the brake lever 32 near the central lever 31 is rotatably engaged with the fixed bracket, while the other end is rotatably engaged with the brake element 21 in the corresponding brake caster 2. The brake caster 2 can be an existing type, for example, it includes a wheel and a brake element 21 connected to the wheel. The brake element 21 has a rotating hole for braking; rotating this hole locks or unlocks the brake on the wheel. This application does not elaborate on the detailed structure and working principle of the brake caster 2, as it can be directly selected from commercially available finished brake casters 2. When the brake lever 32 rotates, it controls the brake element 21 to rotate, thereby locking or unlocking the brake on the brake caster 2.

[0040] In the embodiments disclosed in this application, the brake caster 2 is mounted below the support plate 1. For example... Figure 1 , Figure 2 and Figure 5 As shown, the support plate 1 extends outward to form multiple first extension ends 12 and multiple second extension ends 13. The first extension ends 12 and the second extension ends 13 are respectively located on both sides of the central rotating rod 31 in the radial direction. One end of each of the first extension ends 12 and the second extension ends 13 is connected to the support plate 1, while the other end of each of the first extension ends 12 and the second extension ends 13 is located away from the support plate 1. The length of the second extension end 13 is greater than the length of the first extension end 12. The brake casters 2 are installed on the ends of each of the first extension ends 12 and each of the second extension ends 13 that are away from the support plate 1. More specifically, there are two of each of the first extension ends 12 and the second extension ends 13, and four brake casters 2 are installed on the ends of the first extension ends 12 and the second extension ends 13 that are away from the support plate 1. That is, there are two brake casters 2 on each side of the central rotating rod 31 in the radial direction.

[0041] Considering that many medical devices are not regularly symmetrical structures, this application achieves an asymmetrical structure by setting the first extension end 12 and the second extension end 13 to different lengths. In this case, when the support plate 1 is used to place asymmetrical medical devices, it can readjust the center of gravity of the medical devices to the center of the trolley, thereby making the operation more stable. On the other hand, because the lengths of the first extension end 12 and the second extension end 13 are different, the distance between the first extension end 12 and the second extension end 13 is larger. When crossing obstacles, the gap can be used to allow obstacles to pass, avoiding the situation where it is sometimes difficult to pass obstacles if all the brake casters 2 are symmetrically arranged on the support plate 1.

[0042] In the embodiments disclosed in this application, the connecting rod 33 is used to link the brake lever 32 with the central lever 31. The end of the brake lever 32 furthest from the brake caster 2 is also connected to the central lever 31 via the connecting rod 33. When the central lever 31 rotates around its own axis, it can drive each brake lever 32 to rotate simultaneously around its own axis via the connecting rod 33. At this time, only the central lever 31 needs to be rotated to simultaneously control the rotation of each brake lever 32, thereby simultaneously unlocking or locking the brakes on each caster.

[0043] Specifically, when installing the brake lever 32 and the central lever 31, a locking position and an unlocking position can be pre-set on the rotation trajectory of the central lever 31. When the central lever 31 is in the locked position, the brake lever 32 is rotated to the position of locking the brake caster 2, and then the brake lever 32 is connected to the central lever 31. It should be understood that, considering that the brake lever 32 is located on both sides of the radial direction of the central lever 31, the two brake levers 32 on both sides may rotate in different directions. Therefore, when assembling the central lever 31 and the brake lever 32, a suitable brake caster 2 can be adaptively selected based on the rotation direction and transmission ratio of the brake lever 32 with the central lever 31, so that each brake lever 32 can rotate simultaneously with the central lever 32 to unlock or lock the brake caster 2.

[0044] In a more specific embodiment, such as Figure 2 and Figure 3 As shown, the aforementioned connecting rod 33 consists of a connecting part 331 and a driving part 332. The connecting part 331 is fixedly connected to the driving part 332 and has an included angle. The brake lever 32 is fixedly connected to the driving part 332. The connecting part 331 and the central lever 31 are rotatably engaged in the axial direction of the central lever 31. An example is shown below. Figure 3As shown, one or more drive ports 311 that penetrate the central rotating rod 31 radially are provided on the circumferential surface of the central rotating rod 31. One end of the connecting part 331 is hinged in the drive port 311 and can rotate relative to the axial direction of the central rotating rod 31.

[0045] In specific examples, such as Figure 3 and Figure 4 As shown, the drive unit 332 consists of a first segment 3321 and a second segment 3322. The first segment 3321 and the second segment 3322 are fixedly connected. The first segment 3321 is fixedly connected to the end of the brake lever 32 near the central lever 31. The second segment 3322 is bent from the brake lever 32 toward the central lever 31 and is connected to the connecting part 331. The angle between the second segment 3322 and the connecting part 331 is 90°, which is the included angle between the drive unit 332 and the connecting part 331. In this example, there is also an included angle between the central lever 31 and the brake lever 32, which is an acute angle less than 90°.

[0046] The working principle of this application is as follows: when the central rotating rod 31 rotates circumferentially, a force is applied to the connecting part 331 to force it closer to the central rotating rod 31, as well as a vertical force. The connecting part 331 connected to the central rotating rod 31 cannot move radially perpendicular to the central rotating rod 31 due to the limitation of the driving part 332. Therefore, the connecting part 331 will rotate axially along the central rotating rod 31 within the driving port 311. When the connecting part 331 rotates axially along the central rotating rod 31, a vertical force and a force along the central rotating rod 31's axis are also applied to the driving part 332. Since the driving part 332 is restricted by the brake rod 32 and cannot rotate as a whole along the central rotating rod 31's axis, it can only rotate around the axis of the brake rod 32. Since the first segment 3321 of the driving part 332 is fixedly connected to the brake rod 32, the driving part 332 can drive the brake rod 32 to rotate when it rotates around the axis of the brake rod 32.

[0047] The specific workflow of this application is as follows: When the brake caster 2 is operating normally, the central lever 31 is in the unlocked position. At this time, the brake lever 32 controls the brake component 21 in the brake caster 2 to remain in the unlocked state. When it is necessary to brake the brake caster 2, simply rotate the central lever 31. Since each brake lever 32 is linked to the central lever 31 through the connecting rod 33, when the central lever 31 rotates to the set locking position, the brake lever 32 will rotate simultaneously to lock the brakes of each brake caster 2. Similarly, if you want to unlock the brake caster 2 again, simply rotate the central lever 31 in the opposite direction to return it to the unlocked position.

[0048] In addition, to facilitate control of the rotation of the central lever 31, some optional designs also include a pedal 4, specifically as follows: Figure 1 and Figure 3 As shown, the pedal 4 is located on the side edge of the support plate 1 and connected to the pivot of the central rotating rod 31. Rotating the pedal 4 will drive the central rotating rod 31 to rotate. The shape of the pedal 4 can be adjusted to suit different needs, for example... Figures 8a to 8c As shown, it can be a plate with a certain angle of bending. The pedal 4 can be bent upwards as a whole or bent downwards as a whole; in other embodiments, such as Figure 8d As shown, the pedal 4 can also be a single flat plate structure. The specific shape of the pedal 4 can be adaptively adjusted based on the usage scenario and requirements.

[0049] Based on this, to prevent the pedal 4 from rotating beyond its limit and causing damage to structures such as the connecting rod 33, in some designs, a limiting block 11 is also fixedly installed on the support plate 1. The limiting block 11 is located on one side of the pedal 4, for example, as shown in the example. Figure 1 and Figure 2 As shown, the aforementioned limiting block 11 is located below the pedal 4 assembly. Whether the pedal 4 rotates clockwise or counterclockwise, it will be blocked by the limiting block 11, thus limiting the rotation of the pedal 4. Based on the rotation angle of the central rotating rod 31 between the locked and unlocked positions, a certain included angle can be designed on both sides of the limiting block 11 to restrict the rotation angle of the pedal 4, ensuring that the pedal 4 can only drive the central rotating rod 31 to rotate within the range between the unlocked and locked positions.

[0050] Furthermore, in some examples, the aforementioned pedal 4 is provided with a rotation indicator 41, which indicates the rotation direction of the central lever 31 towards the unlock and lock positions. For example, the rotation indicator 41 can be an arrow pointing in the rotation direction or corresponding text. See the specific examples disclosed in this application. Figure 5 As shown, the rotation indicator 41 consists of an unlocking pattern 411 and a locking pattern 412 disposed on the pedal 4. The unlocking pattern 411 and the locking pattern 412 are respectively disposed on the upper surface of the pedal 4 and located on both sides radially of the central rotating rod 31. The unlocking pattern 411 and the locking pattern 412 can indicate the rotation direction of the central rotating rod 31. Taking the locking pattern 412 being located on the left and the unlocking pattern 411 being located on the right as an example, this indicates that turning the pedal 4 to the left will rotate the central rotating rod 31 to the locked position, while turning the pedal 4 to the right will rotate the central rotating rod 31 to the unlocked position.

[0051] In some embodiments, to better understand the current working status of the brake caster 2, this application also provides a status display mechanism, which is used to display whether the central lever 31 is in the unlocked or locked position. Specifically, as shown below... Figure 5 As shown, the status display mechanism includes a display window 51 on the upper surface of the side edge of the support plate 1. A display component is disposed below the display window 51, and a status indicator 52 is disposed on the side of the display component facing the display window 51. The display component is linked to the central rotating rod 31 via a transmission component, so that when the central rotating rod 31 rotates to the locked or unlocked position, the position of the status indicator 52 can be switched, thereby allowing the status indicator 52 on the display component to be opposite or offset from the display window 51. By observing the status indicator 52 within the display window 51, the position of the central rotating rod 31 can be determined, and thus, whether the brake of the brake caster 2 is in the unlocked or locked state.

[0052] In specific embodiments, for example Figure 3 , Figure 6 and Figure 7 As shown, the above-mentioned display assembly includes a display slider 54 and a guide groove 53. The guide groove 53 is arranged radially along the central rotating rod 31, and the display slider 54 is slidably fitted within the guide groove 53; Figure 3 As shown, in order to avoid the guide groove 53 from obstructing the status display mark, a display hole 531 is provided on the guide groove 53 at the position corresponding to the display window 51, and the aforementioned status display mark is located on the side of the display slider 54 facing the display window 51.

[0053] See also Figure 3 , Figure 6 and Figure 7 As shown, in this embodiment, the transmission assembly includes a first transmission rod 55 and a second transmission rod 56. One end of the first transmission rod 55 is fixedly connected to the central rotating rod 31. The first transmission rod 55, the second transmission rod 56 and the display slider 54 are connected end to end in sequence and hinged to each other. The second transmission rod 56 is connected to the end of the display slider 54 away from the display window 51.

[0054] The aforementioned status indicator 52 may include one or both of the lock indicator 522 and the unlock indicator 521. For example, the aforementioned display indicator may include only one unlock indicator 521 or one lock indicator 522. Taking the status indicator 52 including the unlock indicator 521 as an example, when the central lever 31 is rotated to the unlock position, if the unlock indicator 521 can be observed, it can be determined that the central lever 31 is in the unlock position; if the unlock indicator 521 cannot be observed, it can be determined that the central lever 31 is in the locked position.

[0055] In some designs, such as Figure 7As shown, the status display indicators can include both unlock indicator 521 and lock indicator 522. Both unlock indicator 521 and lock indicator 522 are located on the side of the display component facing the display window 51. When the central lever 31 is in the locked position, the lock indicator 522 is directly opposite the display window 51. When the central lever 31 is in the unlocked position, the unlock indicator 521 is directly opposite the display window 51.

[0056] When the display assembly is in operation, the central rotating rod 31 drives the first transmission rod 55 to rotate circumferentially with the central rotating rod 31, thereby causing the second transmission rod 56 to move vertically while moving towards the central rotating rod 31. The display slider 54, limited by the guide groove 53, only moves closer to or further away from the central rotating rod 31 with the second transmission rod 56. Therefore, when the central rotating rod 31 rotates forward or backward, the display slider 54 reciprocates along the guide groove 53, causing the position of the display slider 54 relative to the opening of the display window 51 to change. This application, by providing an unlock mark 521 and a lock mark 522 on the display slider 54, allows the unlock mark 521 and the lock mark 522 to switch accordingly when the central rotating rod 31 is in the locked or unlocked position.

[0057] This application utilizes the cooperation of the central rotating rod 31, the brake rotating rod 32, and the connecting rod 33. By simply rotating the central rotating rod 31, the braking status of all brake casters 2 can be controlled simultaneously, greatly simplifying the braking operation and improving the user experience.

[0058] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A central braking system, characterized in that, include: Support plate; Multiple brake casters are provided, and the brake casters are connected to the support plate. A brake assembly includes a central rotating rod, a brake rotating rod, and a connecting rod. Both the central rotating rod and the brake rotating rod are rotatably engaged with the support plate. Brake casters are distributed on both sides of the central rotating rod in the radial direction. Each brake rotating rod corresponds to a brake caster. One end of each brake rotating rod is connected to the corresponding brake caster and rotatably engaged with the brake component of that brake caster. The other end of the brake rotating rod is connected to the central rotating rod through the connecting rod. The connecting rod includes a connecting part and a driving part. The connecting part is fixedly connected to the driving part and has an included angle. The brake lever is fixedly connected to the driving part. The connecting part and the central lever are rotatably engaged in the axial direction of the central lever. The driving part includes a first segment and a second segment. The first segment is fixedly connected to the second segment. The first segment is connected to the brake lever. The second segment extends from the brake lever toward the central lever and is connected to the connecting part. The second segment has an included angle with the connecting part. There is an included angle between the brake lever and the central lever. When the central rotating rod rotates around its own axis, it can drive each of the brake rotating rods to rotate around its own axis simultaneously through the connecting rod. The brake rotating rods lock or unlock the brakes of the brake casters by rotating. A locking position and an unlocking position are defined along the rotation trajectory of the central rotating rod. When the central rotating rod rotates to the unlocking position or the locking position, it can drive each of the brake rotating rods to lock or unlock the brakes of the brake casters connected to it simultaneously. The support plate extends outward to form a plurality of first extension ends and a plurality of second extension ends. The first extension ends and the second extension ends are respectively disposed on both sides of the central rotating rod in the radial direction. The brake casters are installed at the ends of each of the first extension ends and each of the second extension ends away from the support plate. The length of the second extension end is greater than the length of the first extension end. The central braking system has an asymmetrical structure with respect to the central rotating rod.

2. The central braking system as described in claim 1, characterized in that, The brake casters include at least four, and the number of brake casters on both sides of the central rotating rod in the radial direction is the same.

3. The central braking system as described in claim 1 or 2, characterized in that, It also includes a pedal, which is disposed on one side of the support plate and is connected to the central rotating rod to drive the central rotating rod to rotate.

4. The central braking system as described in claim 3, characterized in that, The support plate is also provided with a limit block, which is located on one side of the pedal; the limit block is used to block the pedal so that it can only drive the central rotating rod to rotate within the range between the unlock position and the locked position.

5. The central braking system as described in claim 3, characterized in that, The pedal is provided with a rotation indicator, which is configured to indicate the rotation direction of the central lever to the unlock position and the locking position.

6. The central braking system as described in claim 1 or 2, characterized in that, It also includes a status display mechanism, which includes a display window disposed on the support plate and a display component located below the display window. The display component is provided with a status indicator. The display component is connected to the central rotating rod through a transmission component. When the central rotating rod rotates, the transmission component can drive the display component to move, so that the status indicator is opposite to or offset from the display window. The status indicator is used to indicate whether the central rotating rod is in the locked position and / or unlocked position.

7. The central braking system as described in claim 6, characterized in that, The status indicators include a locked indicator and an unlocked indicator; When the central lever is in the locked position, the locking indicator is facing the display window; when the central lever is in the unlocked position, the unlocking indicator is facing the display window.

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