CN112654552A

CN112654552A - Caster wheel control device and ultrasonic equipment

Info

Publication number: CN112654552A
Application number: CN201880097041.3A
Authority: CN
Inventors: 陈艳娇; 赵彦群; 魏开云; 陈志武; 宁浩
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Shenzhen Mindray Scientific Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Shenzhen Mindray Scientific Co Ltd
Priority date: 2018-09-12
Filing date: 2018-09-12
Publication date: 2021-04-13
Anticipated expiration: 2038-09-12
Also published as: CN112654552B; WO2020051799A1

Abstract

A connecting rod mechanism composed of an equipment base (100), a pedal (400), a connecting rod (600) and a driven piece (500) is integrally linked to drive a first pawl (410) and a second pawl (510) to move, and therefore the first ratchet wheel (310) and the second ratchet wheel (320) can be locked respectively. When the unlocking is required, the pedal can be controlled to release the locking state of the first ratchet wheel and the second pawl integrally in linkage. The structure is very convenient to operate, only the pedal is required to be controlled, and the structure is simple to realize, can effectively reduce the cost and is convenient for mass production and use.

Description

Caster wheel control device and ultrasonic equipment

Technical Field

The application relates to an ultrasonic device, in particular to a caster wheel control structure and an ultrasonic device.

Background

Ultrasonic equipment is usually bulky, and particularly, desktop ultrasonic equipment is usually provided with a host computer, a control panel, a display device, and the like, and thus casters are provided on the host computer to facilitate movement of the equipment. For example, a desktop digital ultrasound diagnostic apparatus may be equipped with 3 or more casters. In order to enable the apparatus to be stably parked at a desired position, the caster is generally required to have a braking function.

In some ultrasonic devices, each wheel is provided with a brake pedal, and a doctor needs to step on a single wheel respectively, for example, several wheels in front of the machine are locked firstly, and then several wheels in back of the machine are locked, so that the operation is troublesome. If only some of the casters are locked, insufficient braking force is easily caused. And a central brake structure is adopted in other ultrasonic equipment, so that the unlocking and locking of the caster can be managed in a unified manner. However, the central brake is very complex in structure and very high in cost.

Technical problem

The application provides a truckle controlling means and supersound equipment for simplify truckle controlling means's structure.

Technical solution

In one embodiment, a caster control apparatus is provided, including an apparatus base, a first caster and a second caster, the first caster and the second caster being respectively rotatably mounted on the apparatus base, and the first caster and the second caster being disposed front and back, a rotation center line of the first caster being parallel to a rotation center line of the second caster, further including:

the first ratchet wheel is provided with ratchets and is coaxially and fixedly connected with the first foot wheel;

the second ratchet wheel is provided with ratchets and is coaxially and fixedly connected with the second caster wheel;

the pedal is rotatably arranged on the equipment base and provided with a first pawl, and the first pawl is driven to be clamped between the ratchets of the first ratchet wheel in the rotating process of the pedal to realize braking;

the driven piece is rotatably arranged on the equipment base and provided with a second pawl, and the second pawl is driven to be clamped between the ratchets of the second ratchet wheel in the rotating process of the driven piece to realize braking;

and the two ends of the connecting rod are respectively and rotatably connected with the pedal and the driven part, and the pedal drives the driven part to rotate through the connecting rod.

In one embodiment, the pedal is fixedly provided with a first pawl shaft, the first pawl is fixedly connected to the first pawl shaft, and one end of the connecting rod is rotatably connected to the first pawl shaft.

In one embodiment, the driven member is fixedly provided with a second pawl shaft, the second pawl is fixedly connected to the second pawl shaft, and one end of the connecting rod is rotatably connected to the second pawl shaft.

In one embodiment, after the first pawl is inserted into the ratchet teeth of the first ratchet wheel, the acting force of the ratchet teeth of the first ratchet wheel on the first pawl is in the direction passing through the rotation center line of the pedal.

In one embodiment, after the second pawl is inserted into the ratchet teeth of the second ratchet wheel, the acting force of the ratchet teeth of the second ratchet wheel on the second pawl is in a direction passing through the rotation center line of the driven member.

In one embodiment, the vehicle seat further comprises a first elastic member, one end of the first elastic member is connected with the pedal or the first pawl and moves along with the pedal and the first pawl, the other end of the first elastic member is connected with a fulcrum arranged separately from the pedal and the first pawl, the first elastic member applies torque for moving the first pawl to an unlocking direction to the pedal and/or the first pawl before the first pawl is inserted into the first ratchet wheel, and the first elastic member applies torque for moving the first pawl to a locking direction to the pedal and/or the first pawl after the first pawl is locked with the first ratchet wheel.

In one embodiment, the ratchet wheel further comprises a second elastic member, one end of the second elastic member is connected with the driven member or the second pawl and moves along with the driven member and the second pawl, the other end of the second elastic member is connected with a pivot point which is arranged separately from the driven member and the second pawl, the second elastic member applies torque for moving the second pawl to an unlocking direction to the driven member and/or the second pawl before the second pawl is inserted into the second ratchet wheel, and the second elastic member applies torque for moving the second pawl to a locking direction to the driven member and/or the second pawl after the second pawl is locked with the second ratchet wheel.

In one embodiment, the first casters comprise at least two, at least one of the first casters is provided with a first ratchet and a first pawl, and all the first casters are arranged side by side and can rotate along the same rotation center line.

In one embodiment, the second caster comprises at least two, wherein at least one second caster is correspondingly provided with a second ratchet wheel and a second pawl, and all the second casters are arranged side by side and can rotate along the same rotation center line.

In one embodiment, the connecting rod is parallel to a plane in which the base of the device is located.

In one embodiment, the apparatus base, pedals, connecting rod and follower form a parallel four-bar linkage that drives the first and second pawls to move in unison.

In one embodiment, there is provided an ultrasonic apparatus comprising a caster wheel control device as defined in any preceding claim.

Advantageous effects

According to the caster control device and the ultrasonic equipment of the embodiment, the link mechanism composed of the equipment base, the pedal, the connecting rod and the driven piece is integrally linked to drive the first pawl and the second pawl to move, so that the first pawl and the second pawl can be respectively locked, and when unlocking is needed, the pedal can be controlled to integrally link and release the locking state of the first pawl and the second pawl. The structure is very convenient to operate, only the pedal is required to be controlled, and the structure is simple to realize, can effectively reduce the cost and is convenient for mass production and use.

Drawings

FIG. 1 is a schematic view of a caster wheel control apparatus according to an embodiment of the present application;

FIG. 2 is an exploded view of the embodiment shown in FIG. 2;

FIG. 3 is a schematic view of a caster in an unlocked state according to an embodiment of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of a caster wheel according to an embodiment of the present application in a locked position;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a diagram illustrating a force applied to the first pawl in a locked state according to one embodiment of the present application;

FIG. 8 is a schematic illustration of a first resilient member applying an unlocking torque to a first pawl in one embodiment of the present application;

FIG. 9 is a schematic illustration of a first resilient member applying a locking torque to a first pawl in one embodiment of the present application.

Modes for carrying out the invention

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

The present application provides a caster control device for an ultrasonic apparatus, which may be various types of apparatuses applying ultrasonic waves, such as an ultrasonic diagnostic apparatus, particularly a desktop digital ultrasonic diagnostic apparatus, and the like. The caster wheel control device can conveniently unlock and lock the caster wheel, and is convenient for a user to operate.

Referring to fig. 1 and 2, in one embodiment, the caster control apparatus includes an apparatus base 100, a first caster 210, a second caster 220, a first ratchet 310, a second ratchet 320, a pedal 400, a follower 500, and a connecting rod 600.

The first caster 210 and the second caster 220 are rotatably mounted on the apparatus base 100, respectively. The first caster 210 and the second caster 220 are disposed in front of and behind each other, and a rotation center line of the first caster 210 is parallel to a rotation center line of the second caster 220.

The first ratchet 310 has ratchet teeth coaxially connected to the first caster 210. The second ratchet 320 has ratchet teeth coaxially connected to the second caster 220. The first ratchet 310 and the first caster 210 may be separate components that can be assembled together or may be an integrally formed component (i.e., the first ratchet 310 and the first caster 210 may be integrated into the same component). The second ratchet 320 and the second caster 220 may be separate components that can be assembled together or may be an integrally formed component (i.e., the second ratchet 320 and the second caster 220 may be integrated into the same component).

The pedal 400 is rotatably mounted on the apparatus base 100. For example, a mounting seat 710 may be mounted on the apparatus base 100, and the pedal 400 may be mounted on the mounting seat 710 through a rotation shaft. The pedal 400 is provided with a first pawl 410, and the first pawl 410 is matched with the first ratchet 310. Referring to fig. 3 and 4, in the normal state, the pedal 400 and the first pawl 410 are in the unlocked state, and at this time, the first ratchet 310 is in the unlocked state. Referring to fig. 5 and 6, after the pedal 400 is depressed, the first pawl 410 is driven to be engaged between the ratchet teeth of the first ratchet 310 (i.e., the gap between two ratchet teeth) during the rotation of the pedal 400, so as to achieve braking. Since the first ratchet 310 rotates integrally with the first caster 210, when the first ratchet 310 is locked, the first caster 210 and the first ratchet 310 are locked and cannot rotate as a whole.

The follower 500 is also rotatably mounted on the apparatus base 100. Also, it may be mounted on a mounting seat 720 fixed to the apparatus base 100 by a hinge. The follower 500 is provided with a second pawl 510, the second pawl 510 is matched with the second ratchet wheel 320, and the second pawl 510 is driven to be clamped between the ratchet teeth of the second ratchet wheel 320 (i.e. in the gap between two ratchet teeth) in the rotation process of the follower 500, so as to realize braking. Similarly, since the second ratchet wheel 320 and the second caster wheel 220 rotate integrally, when the second ratchet wheel 320 is locked, the second caster wheel 220 and the second ratchet wheel 320 are locked and cannot rotate integrally.

In terms of power transmission, referring to fig. 1 and 2, the two ends of the connecting rod 600 are rotatably connected with the pedal 400 and the driven member 500 respectively, and the connecting rod 600 may be parallel to the plane of the apparatus base 100, so that the apparatus base 100, the pedal 400, the connecting rod 600 and the driven member 500 form a parallel four-bar linkage mechanism, wherein the pedal 400 is used as a driving element and the driven member 500 is used as a driven element. Based on the characteristics of the parallelogram mechanism, when the pedal 400 rotates on the apparatus base 100, the connecting rod 600 will drive the follower 500 to move in the same direction, so as to drive the first pawl 410 and the second pawl 510 to link through the parallelogram mechanism, and lock and unlock the first ratchet 310 and the second ratchet 320 at the same time, thereby realizing an integrated linked design of multiple casters.

Of course, the first caster 210 and the second caster 220 may include more than one. For example, in one embodiment, the first caster 210 includes at least two, wherein at least one first caster 210 is provided with a first ratchet 310 and a first pawl 410, and all the first casters 210 are disposed side by side and can rotate along the same rotation center line. Similarly, in an embodiment, the second caster 220 may also include at least two, wherein at least one second caster 220 is provided with a second ratchet 320 and a second pawl 510, and all the second casters 220 are arranged side by side and can rotate along the same rotation center line. Referring to fig. 1 and 2, in a more specific embodiment, two

casters

210 and 220 are provided, respectively, and are disposed on two sides of the base 100. In an embodiment not shown, the first caster may be two and the second caster may be one.

The first pawl 410 is fixedly connected to the pedal 400, for example, referring to fig. 1 and 2, in one embodiment, the pedal 400 is fixedly installed with a first pawl shaft 420, and the first pawl 410 is fixedly connected to the first pawl shaft 420. Meanwhile, one end of the connecting rod 600 is rotatably connected to the first ratchet shaft 420, thereby achieving the rotational connection of the connecting rod 600 with the pedal 400, wherein the rotational connection includes, but is not limited to, a hinged connection. In other embodiments, the first pawl 410 may be mounted to the pedal 400 at other positions than the first pawl shaft 420. Meanwhile, the first pawl 410 may be connected to the pedal 400 by screwing, welding, bonding, clipping or other fixing methods.

With continued reference to fig. 1 and 2, in one embodiment, the follower 500 is provided with a second pawl shaft 520, the second pawl 510 is fixedly connected to the second pawl shaft 520, and the other end of the connecting rod 600 is rotatably connected to the second pawl shaft 520, so as to realize the rotational connection between the connecting rod 600 and the follower 500, wherein the rotatable connection includes, but is not limited to, a hinged connection. In other embodiments, the second pawl 510 can be mounted at other positions on the follower 500 than on the second pawl shaft 520. The second pawl 510 may be connected to the follower 500 by screwing, welding, bonding, snapping, or other fastening means.

In the embodiment in which one first caster is provided, the corresponding first pawl may also be provided directly on the pedal without providing the first pawl shaft. Similarly, in the embodiment in which one second caster is provided, the corresponding second pawl may also be provided directly on the follower without providing the second pawl shaft.

In an embodiment where a plurality of first casters are provided, a plurality of corresponding first pawls may be provided, for example, one first pawl may be provided for each first caster, or only some of the first casters may be provided with corresponding first pawls. Similarly, in the embodiment where a plurality of second casters are provided, a plurality of corresponding second pawls may be provided, for example, one second pawl may be provided for each second caster, and only a part of the second casters may be provided with corresponding second pawls.

Further, in some embodiments, if the first caster 210 tends to move, the reaction of the first ratchet 310 against the first pawl 410 may tend to unlock the locking structure. In order to provide better locking of the first pawl 410 and the first ratchet 310, referring to fig. 7, in one embodiment, after the first pawl 410 is inserted into the ratchet teeth of the first ratchet 310, the acting force direction a of the ratchet teeth of the first ratchet 310 on the first pawl 410 passes through the rotation center line of the pedal 400 (i.e. the rotation center line of the first pawl 410). At this time, the force arm L =0 of the force applied by the ratchet teeth of the first ratchet 310 to the first pawl 410 with respect to the rotation center of the pedal 400 does not urge the pedal 400 and the first pawl 410 to move in the unlocking direction, so that the locking structure has a self-locking function, and the ratchet teeth of the first ratchet 310 apply a larger force, so that the brake is not unlocked by mistake, and the unlocking can be performed only by the pedal 400.

Similarly, in one embodiment, the second pawl 510 and the second ratchet wheel 320 can be modified in the same way, i.e., after the second pawl 510 is inserted into the teeth of the second ratchet wheel 320, the force applied by the teeth of the second ratchet wheel 320 to the second pawl 510 is directed through the center line of rotation of the follower 500 (i.e., the center line of rotation of the second pawl 510).

This self-locking design for first pawl 410 and second pawl 510 may be achieved by specifically designing the shape and size of first pawl 410 and second pawl 510 and the shape and size of the ratchet teeth on first ratchet wheel 310 and second ratchet wheel 320.

Further, in order to stably stay the first pawl 410 in the unlocked and locked state, referring to fig. 8 and 9, in one embodiment, a first elastic member 810 is further included. One end of the first elastic member 810 is connected to the step 400 or the first click 410 and moves with the step 400 and the first click 410, and the other end of the first elastic member 810 is connected to a fulcrum 820 provided separately from the step 400 and the first click 410. The fulcrum 820 does not move with the pedal 400 and the first pawl 410, and therefore, one end of the first elastic member 810 is elastically deformed when moving with the pedal 400 and the first pawl 410, so that an unlocking torque or a locking torque is generated to the first pawl 410 by the elastic deformation.

As shown in fig. 8, before first pawl 410 is inserted into first ratchet wheel 310, first elastic member 810 applies a torque (referred to herein as an unlocking torque) to pedal 400 and/or first pawl 410 to move first pawl 410 in an unlocking direction (as indicated by the arrow in fig. 8). The unlocking torque may cause first pawl 410 and pedal 400 to remain unlocked until overcome by an operator force to move toward the locked position.

Specifically, as shown in fig. 9, after the first pawl 410 is locked with the first ratchet wheel 310, the first elastic member 810 applies a torque (referred to as a locking torque herein) to the pedal 400 and/or the first pawl 410 to move the first pawl 410 in a locking direction (as indicated by an arrow in fig. 9). The locking torque may cause first pawl 410 and pedal 400 to remain in a locked state until overcome by an operator force to move toward an unlocked position.

As shown in fig. 8 and 9, in this embodiment, the first elastic member 810 is illustrated as a tension spring that provides tension to the first pawl 410 and the pedal 400. Of course, in other embodiments, a structure such as a compression spring or a torsion spring may be used to achieve the purpose.

The first pawl 410 and the first ratchet wheel 310 are mainly exemplified in fig. 8 and 9 shown above. Of course, in other embodiments, a second resilient member may also be included. The second elastic member is connected at one end to the follower 500 or the second pawl 510 and moves with the follower 500 and the second pawl 510. The other end of the second elastic member is connected to a fulcrum provided separately from the follower 500 and the second pawl 510, which does not move with the follower 500 and the second pawl 510, and thus, when one end of the second elastic member moves with the follower 500 and the second pawl 510, it is elastically deformed, thereby forming an unlocking torque or a locking torque to the second pawl 510 by the elastic deformation.

Specifically, the second elastic member applies a torque (referred to as a locking torque herein) to the follower 500 and/or the second pawl 510 to move the second pawl 510 in the unlocking direction before the second pawl 510 is inserted into the second pawl 510, and applies a torque (referred to as a locking torque herein) to the follower 500 and/or the second pawl 510 to move the second pawl 510 in the locking direction after the second pawl 510 is locked with the second pawl 510.

Of course, the second elastic member may also be implemented by a tension spring, a compression spring, a torsion spring, or other structures.

While the present application has been described with reference to a first caster and a second caster, in other embodiments, a third caster and more casters can be added behind the second caster, and the third caster can be designed with a corresponding follower link (such as follower 500 described above), third pawl and third ratchet structure.

In another aspect, the present application also provides an ultrasound apparatus. The ultrasonic apparatus may be various types of apparatuses that apply ultrasonic waves, and may be, for example, an ultrasonic diagnostic apparatus, particularly a desktop digital ultrasonic diagnostic apparatus, or the like. In this embodiment, the ultrasonic apparatus includes the caster control device as shown in any one of the above, so that the ultrasonic apparatus can conveniently control the state of the caster through the pedal 400, and the caster control device has a simple structure and is convenient to operate, and can greatly reduce the cost of the ultrasonic apparatus and improve the convenience of use of the ultrasonic apparatus.

The present application has been described with reference to specific examples, which are provided only to aid understanding of the present application and are not intended to limit the present application. Variations of the above-described embodiments may occur to those of ordinary skill in the art in light of the teachings of this application.

Claims

The utility model provides a truckle controlling means, includes equipment base, first truckle and second truckle are rotatable the installation on the equipment base respectively, just set up around first truckle and the second truckle, the rotation center line of first truckle is parallel with the rotation center line of second truckle, its characterized in that still includes:

the first ratchet wheel is provided with ratchets and is coaxially and fixedly connected with the first foot wheel;

the second ratchet wheel is provided with ratchets and is coaxially and fixedly connected with the second caster wheel;

the pedal is rotatably arranged on the equipment base and provided with a first pawl, and the first pawl is driven to be clamped between the ratchets of the first ratchet wheel in the rotating process of the pedal to realize braking;

the driven piece is rotatably arranged on the equipment base and provided with a second pawl, and the second pawl is driven to be clamped between the ratchets of the second ratchet wheel in the rotating process of the driven piece to realize braking;

and the two ends of the connecting rod are respectively and rotatably connected with the pedal and the driven part, and the pedal drives the driven part to rotate through the connecting rod.
The caster wheel control apparatus as claimed in claim 1, wherein the pedal is mounted with a first pawl shaft, the first pawl is fixedly coupled to the first pawl shaft, and one end of the link lever is rotatably coupled to the first pawl shaft.
The caster wheel control apparatus as claimed in claim 1 or 2, wherein the follower is provided with a second pawl shaft to which the second pawl is fixedly coupled, and one end of the link lever is rotatably coupled to the second pawl shaft.
The caster wheel control device according to any one of claims 1 to 3, wherein after the first pawl is inserted into the ratchet teeth of the first ratchet wheel, the direction of the force applied to the first pawl by the ratchet teeth of the first ratchet wheel passes through the rotation center line of the pedal.
The caster control device of any one of claims 1 to 4, wherein the direction of force applied by the ratchet teeth of the second ratchet wheel to the second pawl passes through the center line of rotation of the follower after the second pawl is inserted into the ratchet teeth of the second ratchet wheel.
The caster control apparatus according to any one of claims 1 to 5, further comprising a first elastic member having one end connected to the pedal or the first pawl and moving with the pedal and the first pawl, the other end connected to a fulcrum provided separately from the pedal and the first pawl, the first elastic member applying a torque to the pedal and/or the first pawl to move the first pawl in the unlocking direction before the first pawl is inserted into the first ratchet wheel, and applying a torque to the pedal and/or the first pawl to move the first pawl in the locking direction after the first pawl is locked with the first ratchet wheel.
The caster control device of any one of claims 1 to 6, further comprising a second elastic member having one end connected to the follower or the second pawl and moving with the follower and the second pawl, the other end connected to a fulcrum provided separately from the follower and the second pawl, the second elastic member applying a torque to the follower and/or the second pawl to move the second pawl in the unlocking direction before the second pawl is inserted into the second ratchet wheel, and applying a torque to the follower and/or the second pawl to move the second pawl in the locking direction after the second pawl is locked with the second ratchet wheel.
The caster wheel control apparatus as claimed in any one of claims 1 to 7, wherein the first caster wheels comprise at least two, at least one of the first caster wheels is provided with a first ratchet wheel and a first pawl, and all the first caster wheels are arranged side by side and can rotate along the same rotation center line.
The caster wheel control apparatus according to any one of claims 1 to 8, wherein the second caster wheels comprise at least two, at least one of the second caster wheels is provided with a second ratchet and a second pawl, and all the second caster wheels are arranged side by side and can rotate along the same rotation center line.
The caster wheel control apparatus of any one of claims 1 to 9, wherein said connecting bar is parallel to a plane in which said equipment base lies.
The caster control apparatus of any one of claims 1 to 9, wherein the equipment base, pedals, connecting bar and follower form a parallel four-bar linkage that links the first pawl and the second pawl.
An ultrasonic apparatus comprising the caster wheel control device according to any one of claims 1 to 9.