drive link mechanism

Abstract

This application provides a drive linkage mechanism, including: a fixed bracket, a main rotating rod, a brake rotating rod, and a linkage assembly; wherein, the main rotating rod is rotatably engaged with the fixed bracket; the brake rotating rod is rotatably engaged with the fixed bracket, one end of the brake rotating rod is used to connect to the driven component, and a first included angle is formed between the brake rotating rod and the main rotating rod; the linkage assembly includes a first connecting rod and a second connecting rod, the second connecting rod including a rotating portion and a bent portion, the rotating portion and the bent portion being fixedly connected, the other end of the brake rotating rod being fixedly connected to the rotating portion, the bent portion being connected to one end of the first connecting rod and having a second included angle, and the other end of the first connecting rod being rotatably connected to the main rotating rod to rotate axially on the main rotating rod; when the main rotating rod rotates around its own axis, the first connecting rod can rotate axially on the main rotating rod, thereby driving the rotating portion to drive the brake rotating rod to rotate around its own axis, thus driving the driven component. This application can simultaneously drive multiple driven components to rotate.

Description

Technical Field

[0001] This invention relates to the field of drive control, and more specifically to a drive linkage mechanism. Background Technology

[0002] After the invention of the wheel, moving and carrying objects became easier, but wheels could only travel in a straight line, making it very difficult to change direction when moving heavy objects. The advent of casters brought about a revolutionary change in the way people moved objects, allowing them to not only move easily but also in any direction, greatly improving efficiency.

[0003] Among them, casters with brakes are more common. By setting a brake on the caster, the caster can be braked by rotating the driven component through the brake lever. However, in the prior art, the driven component on the caster is usually controlled individually. In some transportation mechanisms, multiple casters need to be configured. How to control the brakes of multiple casters at the same time is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] The main technical problem that this invention addresses is how to control the rotation of multiple brake levers.

[0005] According to a first aspect, this application provides a drive linkage mechanism, comprising:

[0006] Fixed bracket;

[0007] The main rotating rod is rotatably engaged with the fixed bracket.

[0008] A brake lever, which is rotatably engaged with the fixed bracket, one end of which is used to connect to the component to be driven, and a first included angle between the brake lever and the main lever;

[0009] A linkage assembly includes a first connecting rod and a second connecting rod. The second connecting rod includes a rotating portion and a bent portion, which are fixedly connected. The other end of a brake lever is fixedly connected to the rotating portion. The bent portion is connected to one end of the first connecting rod, and the bent portion forms a second angle with the first connecting rod. The other end of the first connecting rod is rotatably connected to a main rotating rod to rotate axially on the main rotating rod.

[0010] When the main rotating rod rotates around its own axis, the first connecting rod can rotate in the axial direction of the main rotating rod, thereby driving the rotating part to drive the brake rotating rod to rotate around its own axis, so as to drive the driven component.

[0011] In one optional embodiment, the main rotating rod has a drive port, and the end of the first connecting rod away from the bent portion is rotatably engaged in the drive port.

[0012] In one alternative embodiment, the drive port extends radially through the main rotating rod.

[0013] In one alternative embodiment, the drive port is configured as a single port that extends axially along the main rotating rod.

[0014] In one optional embodiment, the drive ports are configured as multiple, and the multiple drive ports are arranged sequentially along the axial direction of the main rotating rod, with at least one of the first connecting rods inserted into each drive port.

[0015] In one alternative embodiment, the first included angle is less than 90° and the second included angle is equal to 90°.

[0016] In one optional embodiment, the fixed bracket includes a first fixed bracket and a second fixed bracket; both ends of the main rotating rod are rotatably engaged with the first fixed bracket, and the end of the brake rotating rod near the main rotating rod is rotatably engaged with the second fixed bracket.

[0017] In an optional embodiment, a third fixed bracket is further included, with the middle portion of the brake lever rotatably engaged with the third fixed bracket.

[0018] In one optional embodiment, the main rotating rod includes a main body and rotating shafts disposed at both ends of the main body, the rotating shafts being rotatably engaged with the fixed bracket.

[0019] In an alternative embodiment, a drive element is further included, which is connected to the rotating shaft to drive the main rotating rod to rotate.

[0020] According to the drive linkage mechanism of the above embodiment, this application uses a main rotating rod and is equipped with a plurality of brake rotating rods. The main rotating rod and the brake rotating rods are connected by a connecting rod, so that when the main rotating rod rotates, each brake rotating rod rotates together, thereby simultaneously driving multiple driven components to rotate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of one embodiment of the present application after removing the support frame;

[0023] Figure 3 for Figure 2 A schematic diagram of the state of the drive lever after rotation in the embodiment;

[0024] Figure 4 This is a schematic diagram of a linkage assembly in one embodiment of this application;

[0025] Figure 5 This is an overall schematic diagram of an embodiment of the central braking system in this application;

[0026] Figure 6 for Figure 5 A schematic diagram after the support plate has been removed.

[0027] Reference numerals: First fixed bracket 11, Second fixed bracket 12, Third fixed bracket 13, Main rotating rod 2, Main body 21, Rotating shaft 22, Drive port 23, Brake rotating rod 3, Driven component 4, Connecting rod assembly 5, First connecting rod 51, Second connecting rod 52, Rotating part 521, Bending part 522, Driven component 6, First included angle α, Second included angle β, Support plate 7, First extension end 71, Second extension end 72, Caster 8. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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).

[0031] like Figure 1As shown, this application discloses a drive linkage mechanism, which includes: a fixed bracket, a brake drive rod, a brake lever 3, and a linkage assembly 5.

[0032] The main rotating rod 2 and the brake rotating rod 3 are rotatably coupled with the fixed bracket, which supports the main rotating rod 2 and the brake rotating rod 3 so that they can only move in the circumferential direction. For example... Figures 1 to 3 As shown, in a more specific example, the main rotating rod 2 is composed of a main body 21 and a rotating shaft 22. The main body 21 of the main rotating rod 2 can be cylindrical or elongated, and this application does not impose too many limitations. The rotating shaft 22 is disposed at both ends of the main body 21.

[0033] In some specific examples, such as Figure 1 As shown, the fixed bracket includes two first fixed brackets 11 and several second brackets 12. The rotating shafts 22 at both ends of the main rotating rod 2 are respectively installed in the two first fixed brackets 11 through bearings. Driven by the rotating shafts 22, the main rotating rod 2 can rotate around its own axis. The second fixed brackets 12 correspond one-to-one with the brake rods 3, and the brake rods 3 correspond one-to-one with the drive components 4. The end of the brake rod 3 near the main rotating rod 2 is rotatably engaged with the corresponding second fixed bracket 12, and a certain first included angle α is formed between the brake rod 3 and the main rotating rod 2. The other end of the brake rod 3 is rotatably engaged with the corresponding drive component 4. The drive component 4 can be a drive component 4 used to brake the caster 8, or it can be other drive components 4 that need to be driven. This application does not impose too many limitations on this. When the brake lever 3 rotates, it can control at least a part of the structure in the driven component 4 to rotate, thereby enabling the driven component 4 to complete the corresponding action; for example, when the driven component 4 is the mechanism for controlling the brake of the caster 8, the caster 8 can be braked by controlling the rotation hole for braking provided on the driven component 4 to rotate.

[0034] Based on the above, in order to better fix the brake lever 3, refer to Figure 1 As shown, a third fixed bracket 13 is also provided at the bottom of the fixed bracket. The third fixed bracket 13 corresponds one-to-one with the brake lever 3. The brake lever 3 passes through the third fixed bracket 13, and its middle part is rotatably engaged with the third fixed bracket 13.

[0035] In the embodiments disclosed in this application, such as Figure 1As shown, the linkage assembly 5 is used to link the brake lever 3 with the main lever 2. The end of the brake lever 3 away from the driven component 4 is also connected to the main lever 2 through the linkage assembly 5. When the main lever 2 rotates around its own axis, it can drive each brake lever 3 to rotate around its own axis simultaneously through the linkage assembly 5. At this time, only the main lever 2 needs to be rotated to control the rotation of each brake lever 3 at the same time, thereby simultaneously unlocking or locking the brakes of each caster 8.

[0036] In a more specific embodiment, such as Figure 2 and Figure 3 As shown, the aforementioned connecting rod assembly 5 consists of a first connecting rod 51 and a second connecting rod 52. The first connecting rod 51 and the second connecting rod 52 are fixedly connected, and the brake rotating rod 3 is fixedly connected to the second connecting rod 52. The first connecting rod 51 and the main rotating rod 2 are rotatably engaged in the axial direction of the main rotating rod 2. For example,... Figures 1 to 3 As shown, one or more drive ports 23 that penetrate the main rotating rod 2 radially are provided on the circumferential surface of the main rotating rod 2. One end of the first connecting rod 51 is hinged in the drive port 23 and can rotate relative to the axial direction of the main rotating rod 2.

[0037] like Figure 1 As shown, when there are multiple drive ports 23, the multiple drive ports 23 can be arranged sequentially along the axis of the main rotating rod 2, wherein at least one first connecting rod 51 is inserted and connected in each drive port 23; for example, if the above-mentioned brake rotating rod 3 is provided with four, then the corresponding first connecting rod 51 is also provided with four, and the above-mentioned drive ports 23 can also be provided with four accordingly; it should be understood that the drive ports 23 and the connecting rod assembly 5 may not correspond one-to-one. For example, when there are two drive ports 23, then two first connecting rods 51 can be connected in each drive port 23. In some examples Figure 2 and Figure 3 As shown, when only one drive port 23 is provided, all the first connecting rods 51 are rotatably engaged within the drive port 23.

[0038] In specific examples, such as Figure 4 As shown, the second connecting rod 52 consists of a rotating part 521 and a bending part 522. The rotating part 521 and the bending part 522 are fixedly connected. The rotating part 521 is fixedly connected to the end of the brake lever 3 near the main lever 2. The bending part 522 bends from the brake lever 3 toward the main lever 2. The bending part 522 is connected to the first connecting rod 51. The bending part 522 and the first connecting rod 51 have a second included angle β equal to 90°. In this example, the first included angle α is an acute angle less than 90°.

[0039] The working principle of this application is as follows: when the main rotating rod 2 rotates circumferentially, a force is applied to the first connecting rod 51 to force it closer to the main rotating rod 2, as well as a vertical force. The first connecting rod 51, connected to the main rotating rod 2, cannot move radially perpendicular to the main rotating rod 2 due to the limitation of the second connecting rod 52. Therefore, the first connecting rod 51 will rotate along the axial direction of the main rotating rod 2 within the drive port 23. When the first connecting rod 51 rotates along the axial direction of the main rotating rod 2, a vertical force and a force along the axial direction of the main rotating rod 2 are also applied to the second connecting rod 52. However, since the second connecting rod 52 is restricted by the brake rod 3, it cannot rotate as a whole along the axial direction of the main rotating rod 2. Therefore, it can only rotate around the axis of the brake rod 3. Since the rotating part 521 in the second connecting rod 52 is fixedly connected to the brake rod 3, when the second connecting rod 52 rotates around the axis of the brake rod 3, it can drive the brake rod 3 to rotate.

[0040] The specific workflow of this application is as follows: Figure 2 and Figure 3 As shown, in order to more intuitively see the motion state of the driven component 4, this application... Figure 2 and Figure 3 The example uses a long, strip-shaped component 4 to be driven. Before operation, the main rotating rod 2 is in the position... Figure 2 As shown in the diagram, the component 4 to be driven is in a horizontal position; when it is necessary to rotate the component 4, simply... Figure 3 As shown, when the main rotating rod 2 is rotated by a certain angle, since each brake rotating rod 3 is linked to the main rotating rod 2 through the connecting rod assembly 5, the brake rotating rod 3 will rotate simultaneously when the main rotating rod 2 rotates, thereby causing the driven component 4 to deflect. Similarly, if you want the driven component 4 to return to its initial state, simply rotate the main rotating rod 2 in the opposite direction to return it to its original position.

[0041] In addition, to facilitate control of the rotation of the main rotating rod 2, some optional designs also include a drive component 6, specifically such as... Figures 1 to 3 As shown, the driving component 6 is connected to the rotating shaft 22 of the main rotating rod 2. Rotating the driving component 6 will drive the main rotating rod 2 to rotate. The shape of the driving component 6 can be adapted to meet specific needs, for example... Figure 1 and Figure 2 As shown, in Figure 1 In this type, the driving component 6 is a pedal, while... Figure 2 In one case, the driving component 6 is a flat knob. Alternatively, the driving component 6 can also be an electrical component such as a motor; this application does not impose further limitations on this.

[0042] This application sets up a linkage assembly 5 to link each brake lever 3 with the main lever 2. By simply rotating the main lever 2, all brake levers 3 connected to it can be rotated at the same time, thereby achieving the purpose of simultaneously controlling multiple driveable components 4.

[0043] In some embodiments, this application can be used as a central braking system for a trolley, enabling the trolley to be braked or unlocked via the drive linkage mechanism disclosed in this application. Specifically, as shown... Figure 5 and Figure 6 As shown, in this embodiment, a support plate 7 and casters 8 are also included.

[0044] In the embodiments disclosed in this application, the caster 8 is installed below the support plate 7. The support plate 7 extends outward to form a plurality of first extension ends 71 ​​and a plurality of second extension ends 72. The first extension ends 71 ​​and the second extension ends 72 are respectively disposed on both sides of the radial direction of the main rotating rod 2. One end of the first extension end 71 and the second extension end 72 are connected to the support plate 7, while the other end of the first extension end 71 and the second extension end 72 are away from the support plate 7.

[0045] exist Figure 5 In the illustrated embodiment, the length of the second extension end 72 is greater than the length of the first extension end 71. However, it should be understood that in some alternative embodiments, the length of the second extension end 72 may be the same as the length of the first extension end 71, and this application does not specifically limit this. The casters 8 are installed at the ends of each first extension end 71 and each second extension end 72 away from the support plate 7. More specifically, there are two of each of the first extension ends 71 ​​and second extension ends 72, and four casters 8 are provided and installed at the ends of the first extension ends 71 ​​and second extension ends 72 away from the support plate 7, that is, two casters 8 are provided on each radial side of the main rotating rod 2.

[0046] See also Figure 5 As shown, the support plate 7 is used to support medical equipment. The top of the support plate 7 can be a rectangular or circular planar geometric shape. The support plate 7 can provide mechanical support for medical equipment such as ventilators. In this embodiment, the caster 8 can be an existing caster 8. For example, the caster 8 includes a wheel and a braking mechanism connected to the wheel. The braking mechanism is provided with a rotating hole for braking. By rotating the rotating hole, the brake of the wheel can be locked or unlocked. This application does not elaborate on the detailed structure and working principle of the caster 8, which can be directly selected from commercially available finished casters 8. In this embodiment, the driven component 4 is the braking mechanism in the caster 8 used to control the brake of the caster 8. The drive linkage mechanism disclosed in this application is used to control the braking mechanism of each caster 8, so that all casters 8 connected to the support plate 7 are locked or unlocked simultaneously.

[0047] like Figure 6As shown, the bottom of the support plate 7 is fixed with the aforementioned first fixed bracket 11, second fixed bracket 12, and third fixed bracket 13, wherein the main rotating rod 2 and the brake rotating rod 3 are installed at the bottom of the support plate 7. The aforementioned brake rotating rod 3 corresponds one-to-one with the caster 8; one end of the brake rotating rod 3 near the main rotating rod 2 is rotatably engaged with the fixed bracket, and the other end is rotatably engaged with the brake component in the corresponding caster 8; when the brake rotating rod 3 rotates, it can control the brake component to rotate, thereby locking or unlocking the brake of the caster 8.

[0048] When installing the brake lever 3 and the main lever 2, a locking position and an unlocking position can be pre-set on the rotation trajectory of the main lever 2. When the main lever 2 is in the locked position, the brake lever 3 is rotated to the position of locking the brake caster 8, and then the brake lever 3 is connected to the main lever 2. It should be understood that, considering that the brake lever 3 is located on both sides of the radial direction of the main lever 2, the two brake levers 3 on both sides may rotate in different directions. Therefore, when assembling the main lever 2 and the brake lever 3, a suitable brake caster 8 can be adaptively selected based on the rotation direction and transmission ratio of the brake lever 3 with the main lever 2, so that when the main lever 2 rotates to the locked or unlocked position, each brake lever 3 can rotate simultaneously to unlock or lock the brake caster 8.

[0049] The specific workflow of this embodiment is as follows: When the caster 8 is operating normally, the main rotating rod 2 is in the unlocked position. At this time, the brake rotating rod 3 controls the brake component in the caster 8 to remain in the unlocked state. When it is necessary to brake the caster 8, simply rotate the main rotating rod 2. Since each brake rotating rod 3 is linked to the main rotating rod 2 through a connecting rod, when the main rotating rod 2 rotates to the set locking position, the brake rotating rod 3 will rotate simultaneously to lock the brakes of each caster 8. Similarly, if you want to unlock the brakes of the caster 8 again, simply rotate the main rotating rod 2 in the opposite direction to return it to the unlocked position.

[0050] In this embodiment, the driving component 6 is a pedal, specifically as follows: Figure 5 As shown, the pedal is located on the side edge of the support plate 7 and connected to the pivot 22 of the main rotating rod 2. Rotating the pedal will drive the main rotating rod 2 to rotate. The shape of the pedal can be adapted to meet specific needs. For example, it can be a plate with a certain angle of bend, and the pedal can be bent upwards or downwards as a whole. In other embodiments, the pedal can also be a single flat plate structure. The specific shape of the pedal can be adapted to the usage scenario and requirements. The operator can drive the main rotating rod 2 to rotate mechanically by stepping on the pedal.

[0051] When used as the central braking system of a trolley, this application allows for simultaneous braking or unlocking of each caster 8 connected to the support plate 7 simply by rotating the main lever 2 via the pedal.

[0052] This application uses a main rotating rod 2 and is equipped with several brake rotating rods 3. The main rotating rod 2 and the brake rotating rods 3 are connected by a connecting rod, so that when the main rotating rod 2 rotates, each brake rotating rod 3 rotates together, thereby simultaneously driving multiple driven components 4 to rotate.

[0053] 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 drive linkage mechanism applied to the central braking system of a trolley capable of supporting medical equipment, characterized in that, include: Fixed bracket; The main rotating rod is rotatably engaged with the fixed bracket. A brake lever, which is rotatably engaged with the fixed bracket, one end of which is used to connect to the component to be driven, and a first included angle between the brake lever and the main lever; A linkage assembly includes a first connecting rod and a second connecting rod. The second connecting rod includes a rotating part and a bending part, which are fixedly connected. The other end of a brake lever is fixedly connected to the rotating part. The bending part is connected to one end of the first connecting rod, and the bending part has a second included angle with the first connecting rod. The other end of the first connecting rod is rotatably connected to a main rotating rod to rotate in the axial direction of the main rotating rod. The first included angle is less than 90°, and the second included angle is equal to 90°. When the main rotating rod rotates around its own axis, the first connecting rod can rotate in the axial direction of the main rotating rod, thereby driving the rotating part to drive the brake rotating rod to rotate around its own axis, so as to drive the driven component; the main rotating rod is provided with a driving port, and the end of the first connecting rod away from the bent part is rotatably engaged in the driving port.

2. The drive linkage mechanism as described in claim 1, characterized in that, The drive port extends radially through the main rotating rod.

3. The driving linkage mechanism as described in claim 2, characterized in that, The drive port is configured as one, and the drive port extends along the axial direction of the main rotating rod.

4. The drive linkage mechanism as described in claim 2, characterized in that, The drive ports are configured as multiple, and the multiple drive ports are arranged sequentially along the axial direction of the main rotating rod. At least one of the first connecting rods is inserted and connected into each drive port.

5. The drive linkage mechanism as described in any one of claims 1 to 4, characterized in that, The fixed bracket includes a first fixed bracket and a second fixed bracket; both ends of the main rotating rod are rotatably engaged with the first fixed bracket, and the end of the brake rotating rod near the main rotating rod is rotatably engaged with the second fixed bracket.

6. The drive linkage mechanism as described in claim 5, characterized in that, It also includes a third fixed bracket, and the middle part of the brake lever is rotatably engaged with the third fixed bracket.

7. The drive linkage mechanism as described in any one of claims 1 to 4, characterized in that, The main rotating rod includes a main body and rotating shafts disposed at both ends of the main body, and the rotating shafts are rotatably engaged with the fixed bracket.

8. The drive linkage mechanism as described in claim 7, characterized in that, It also includes a drive component, which is connected to the rotating shaft to drive the main rotating rod to rotate.

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