WO2020051799A1 - 脚轮控制装置及超声设备 - Google Patents
脚轮控制装置及超声设备 Download PDFInfo
- Publication number
- WO2020051799A1 WO2020051799A1 PCT/CN2018/105228 CN2018105228W WO2020051799A1 WO 2020051799 A1 WO2020051799 A1 WO 2020051799A1 CN 2018105228 W CN2018105228 W CN 2018105228W WO 2020051799 A1 WO2020051799 A1 WO 2020051799A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pawl
- ratchet
- caster
- pedal
- elastic member
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
Definitions
- the present application relates to an ultrasonic device, in particular to a caster control structure and an ultrasonic device.
- Ultrasound equipment is usually relatively large, especially desktop ultrasound equipment, which usually has a host, a control panel, and a display device. Therefore, casters are provided on the host to facilitate the movement of the device.
- a desktop digital ultrasound system may be equipped with 3 or more casters. In order to make the device stop stably at the desired position, the casters are usually required to have a braking function.
- each wheel comes with a brake pedal, and the doctor needs to step on the single wheel separately. For example, the first few wheels of the machine are locked, and then the next few wheels are locked behind the machine. The operation is very troublesome. If only some of the casters are locked, it can easily lead to insufficient braking force.
- Other ultrasonic equipment uses a central brake structure, which can uniformly manage the unlocking and locking of casters. But this kind of central brake structure is very complicated and the whole set of cost is very high.
- the present application provides a caster control device and an ultrasonic device to simplify the structure of the caster control device.
- a caster control device which includes a device base, a first caster, and a second caster.
- the first and second casters are respectively rotatably installed on the device base, and the first caster It is arranged forward and backward with the second caster.
- the rotation centerline of the first caster is parallel to the rotation centerline of the second caster, and further includes:
- a first ratchet wheel having ratchet teeth and being fixedly connected coaxially with the first caster wheel;
- a second ratchet wheel which has ratchet teeth and is fixedly connected coaxially with the second caster wheel;
- a pedal which is rotatably installed on the base of the device.
- the pedal is provided with a first pawl, and the first pawl is driven to engage between the ratchet teeth of the first ratchet during the rotation of the pedal to realize the control. move;
- a follower the follower is rotatably installed on the base of the device, the follower is provided with a second pawl, and the second pawl is driven to engage the second ratchet during the rotation of the follower Braking between the ratchet teeth;
- the pedal is fixedly mounted 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.
- a second pawl shaft is fixedly installed on the follower, 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. On the shaft.
- the direction of the force of the ratchet teeth of the first ratchet on the first pawl passes through the rotation centerline of the pedal.
- the direction of the force of the ratchet teeth of the second ratchet on the second pawl passes through the rotation centerline of the follower.
- a first elastic member is further included.
- One end of the first elastic member is connected to the pedal or the first pawl, and moves with the pedal and the first pawl, and the other end of the first elastic member is connected.
- the first elastic member applies the pedal and / or the first pawl to the first pawl toward After the first pawl is locked with the first ratchet in the unlocking direction, the first elastic member applies a torque that moves the first pawl in the locking direction to the pedal and / or the first pawl.
- a second elastic member is further included.
- One end of the second elastic member is connected to the driven member or the second pawl, and moves with the driven member and the second pawl.
- the second elastic member The other end is connected to a fulcrum provided separately from the driven member and the second pawl, and before the second pawl is inserted into the second ratchet, the second elastic member faces the driven member and / or the second ratchet.
- the claw applies a torque to move the second pawl to the unlocking direction.
- the second elastic member applies a second pawl to the follower and / or the second pawl to cause the second pawl to move in the unlocking direction. Torque of pawl-locking movement.
- the first casters include at least two, and at least one of the first casters is correspondingly provided with a first ratchet and a first pawl, and all the first casters are arranged side by side and can be rotated along the same rotation centerline.
- the second casters include at least two, and at least one of the second casters is correspondingly provided with a second ratchet and a second pawl, and all the second casters are arranged side by side and can rotate along the same rotation center line.
- the connecting rod is parallel to a plane on which the device base is located.
- the equipment base, the pedal, the connecting rod and the follower form a parallel four-link mechanism, and the parallel four-link mechanism drives the first pawl and the second pawl to interlock.
- an ultrasound apparatus including the caster control device according to any one of the above.
- the first pawl and the second pawl are driven by the linkage mechanism composed of the equipment base, the pedal, the connecting rod and the follower to integrally drive the movement of the first pawl and the second pawl, so that they can respectively
- the first ratchet wheel and the second pawl are locked, and when unlocking is required, the pedal can also be controlled to release the locked state of the first ratchet wheel and the second pawl in an integrated linkage.
- This structure is very convenient to operate and only needs to control the pedal. Moreover, the structure is relatively simple to implement, can effectively reduce costs, and is convenient for mass production and use.
- FIG. 1 is a schematic structural diagram of a caster control device according to an embodiment of the present application.
- FIG. 3 is a schematic diagram of a caster in an unlocked state according to an embodiment of the present application.
- FIG. 4 is an enlarged schematic view of part A in FIG. 3; FIG.
- FIG. 5 is a schematic diagram of a caster in a locked state according to an embodiment of the present application.
- FIG. 6 is an enlarged schematic view of a portion B in FIG. 5;
- FIG. 7 is a schematic diagram of a force of a first pawl in a locked state in an embodiment of the present application.
- FIG. 8 is a schematic diagram of an unlocking torque applied by a first elastic member to a first pawl in an embodiment of the present application
- FIG. 9 is a schematic diagram of a first elastic member applying a locking torque to a first pawl in an embodiment of the present application.
- connection and “connection” in this application include direct and indirect connections (connections) unless otherwise specified.
- the present application provides a caster control device.
- the caster control device is used for an ultrasonic device.
- the ultrasonic device can be various types of devices that apply ultrasonic waves, for example, it can be an ultrasonic diagnostic instrument, especially a desktop digital ultrasonic diagnostic instrument.
- the caster control device can easily unlock and lock the casters, which is convenient for users to operate.
- the caster control device includes a device 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 Connecting rod 600.
- the first caster 210 and the second caster 220 are rotatably mounted on the equipment base 100, respectively.
- the first caster 210 and the second caster 220 are disposed forward and backward, and the rotation center line of the first caster 210 is parallel to the rotation center line of the second caster 220.
- the first ratchet wheel 310 has ratchet teeth that are coaxially connected with the first caster wheel 210.
- the second ratchet wheel 320 has ratchet teeth that are coaxially connected with the second caster 220.
- the first ratchet wheel 310 and the first caster wheel 210 may be separate parts that can be assembled together, or they may be a single integral part (that is, the first ratchet wheel 310 and the first caster wheel 210 may be integrated into a same part).
- the second ratchet wheel 320 and the second caster wheel 220 may be separate parts that can be assembled together, or they may be a single integral part (that is, the second ratchet wheel 320 and the second caster wheel 220 may be integrated into the same part).
- the pedal 400 is rotatably mounted on the equipment base 100.
- a mounting base 710 may be mounted on the device base 100, and the pedal 400 is mounted on the mounting base 710 through a rotating shaft.
- the pedal 400 is provided with a first pawl 410, and the first pawl 410 is matched with the first ratchet 310. Please refer to FIGS. 3 and 4.
- the pedal 400 and the first pawl 410 are in an unlocked state.
- the first ratchet 310 is in an unlocked state.
- the first pawl 410 is driven to be caught between the ratchet teeth of the first ratchet wheel 310 (that is, the gap between the two ratchet teeth) to achieve brake. Since the first ratchet wheel 310 and the first caster wheel 210 rotate integrally, after the first ratchet wheel 310 is locked, the first caster wheel 210 and the first ratchet wheel 310 are locked as a whole and cannot be rotated.
- the follower 500 is also rotatably mounted on the equipment base 100. Similarly, it can also be mounted on a mounting base 720 fixed to the device base 100 through a rotating shaft.
- the follower 500 is provided with a second pawl 510, which is matched with the second ratchet 320, and drives the second pawl 510 to engage with the ratchet teeth of the second ratchet 320 during the rotation of the follower 500 Between the two ratchet teeth to achieve braking.
- the second ratchet wheel 320 and the second caster wheel 220 rotate integrally, after the second ratchet wheel 320 is locked, the entire second caster wheel 220 and the second ratchet wheel 320 are locked and cannot rotate.
- the two ends of the connecting rod 600 are rotatably connected to the pedal 400 and the follower 500, respectively.
- the pedal 400, the connecting rod 600, and the follower 500 form a parallel four-link mechanism, in which the pedal 400 serves as a driving element and the follower 500 serves as a driven element.
- the follower 500 will be driven to move in the same direction through the connecting rod 600, thereby driving the first pawl 410 and
- the second pawl 510 is linked to lock and unlock the first ratchet 310 and the second ratchet 320 at the same time, thereby achieving an integrated linkage design of multiple casters.
- the first caster 210 and the second caster 220 may include more than one.
- the first caster 210 includes at least two, and at least one of the first casters 210 is correspondingly provided with a first ratchet 310 and a first pawl 410. All the first casters 210 are arranged side by side, and all of them can Rotate along the same centerline of rotation.
- the second caster 220 may also include at least two, of which at least one second caster 220 is correspondingly provided with a second ratchet 320 and a second pawl 510, and all the second casters 220 are arranged side by side. And all of them can rotate along the same rotation centerline.
- first casters 210 and two second casters 220 which are distributed on both sides of the device base 100.
- the first pawl 410 is fixedly connected to the pedal 400, for example, please refer to FIGS. 1 and 2.
- the pedal 400 is fixedly installed with a first pawl shaft 420, and the first pawl 410 is fixedly connected to the first On the pawl shaft 420.
- one end of the connecting rod 600 is rotatably connected to the first pawl shaft 420, so as to realize the rotational connection between the connecting rod 600 and the pedal 400.
- the rotatable connection manner includes, but is not limited to, a hinged connection manner.
- the first pawl 410 may be fixed on the first pawl shaft 420, and may also be installed in other positions of the pedal 400.
- the first pawl 410 can be connected to the pedal 400 by screwing, welding, bonding, snapping or other fixing methods.
- the follower 500 is mounted 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 may be It is rotatably connected to the second pawl shaft 520, so as to realize the rotational connection between the connecting rod 600 and the driven member 500.
- the rotatable connection manner includes, but is not limited to, a hinged connection manner.
- the second pawl 510 may be fixed on the second pawl shaft 520, and may also be installed in other positions of the follower 500.
- the second pawl 510 can be connected to the driven member 500 by screwing, welding, bonding, snapping or other fixing methods.
- the corresponding first pawl may also be directly disposed on the pedal without the first pawl shaft.
- the corresponding second pawl can also be directly disposed on the follower without the second pawl shaft.
- each first caster may be provided with one first pawl, of course, only a part of the first casters may be provided with corresponding ones.
- First pawl in the embodiment in which a plurality of second casters are provided, a plurality of corresponding second pawls may also be provided.
- each second caster may be provided with a second pawl, of course, only a part of the second casters may be provided.
- a corresponding second pawl is provided.
- the reaction force generated by the first ratchet 310 to the first pawl 410 may cause the locking structure to have an unlocking tendency.
- the reaction force generated by the first ratchet 310 to the first pawl 410 may cause the locking structure to have an unlocking tendency.
- FIG. 7 in order to better lock the first pawl 410 and the first ratchet wheel 310, please refer to FIG. 7, in an embodiment, after the first pawl 410 is inserted into the ratchet teeth of the first ratchet wheel 310, The action direction a of the ratchet teeth of the first ratchet wheel 310 on the first pawl 410 is passed through the rotation center line of the pedal 400 (ie, the rotation center line of the first pawl 410).
- the acting force of the ratchet teeth of the first ratchet wheel 310 on the first pawl 410 is relative to the rotation center of the pedal 400.
- the ratchet teeth of the first ratchet wheel 310 can exert unlocking force without causing the brake to be unlocked by mistake, and can only be unlocked by the pedal 400.
- the second ratchet 510 and the second ratchet 320 can also be modified in the same way, that is, after the second ratchet 510 is inserted into the ratchet teeth of the second ratchet 320, the second ratchet 320 The direction of the force of the ratchet teeth on the second pawl 510 passes through the rotation center line of the follower 500 (that is, the rotation center line of the second pawl 510).
- This self-locking design for the first pawl 410 and the second pawl 510 can be determined by the shape and size of the first pawl 410 and the second pawl 510 and the ratchet teeth on the first ratchet 310 and the second ratchet 320. Shape and size for targeted design implementation.
- the first elastic member 810 is further included.
- One end of the first elastic member 810 is connected to the pedal 400 or the first pawl 410, and moves with the pedal 400 and the first pawl 410.
- the other end of the first elastic member 810 is connected to the pedal 400 and the first pawl 410.
- the fulcrum 820 does not move with the pedal 400 and the first pawl 410. Therefore, when one end of the first elastic member 810 moves with the pedal 400 and the first pawl 410, an elastic deformation is generated, so that the first The pawl 410 creates an unlocking torque or a locking torque.
- the first elastic member 810 applies the pedal 400 and / or the first pawl 410 to make the first pawl 410 in an unlocking direction (as shown in FIG. 8).
- the torque of movement (referred to as the unlocking torque in this application).
- the unlocking torque can cause the first pawl 410 and the pedal 400 to remain in an unlocked state, and then not move to the locked position until the torque is overcome by the external force of the operator.
- the first elastic member 810 applies the pedal 400 and / or the first pawl 410 to lock the first pawl 410.
- Torque (referred to as lock-up torque in the present application) moving in a direction (shown by an arrow in FIG. 9).
- the locking torque can cause the first pawl 410 and the pedal 400 to be kept in a locked state, and then not moved to the unlocked position until the torque is overcome by the external force of the operator.
- the first elastic member 810 is described by taking a tension spring as an example, and the tension spring provides tension to the first pawl 410 and the pedal 400.
- structures such as compression springs and torsion springs can also be used to achieve this purpose.
- the first pawl 410 and the first ratchet wheel 310 have been mainly described as examples in FIGS. 8 and 9 shown above.
- a second elastic member may also be included.
- One end of the second elastic member is connected to the driven member 500 or the second pawl 510 and moves with the driven member 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.
- the fulcrum does not move with the follower 500 and the second pawl 510. Therefore, the second elastic member
- elastic deformation will occur, so that the unlocking torque or the locking torque is formed on the second pawl 510 by the elastic deformation.
- the second elastic member applies a torque to the follower 500 and / or the second pawl 510 to move the second pawl 510 in the unlocking direction (this application (Referred to as locking torque), after the second pawl 510 and the second pawl 510 are locked, the second elastic member applies a force to the follower 500 and / or the second pawl 510 to lock the second pawl 510 Torque in the direction of movement (referred to as lock-up torque in this application).
- the second elastic member may also be implemented by a structure such as a tension spring, a compression spring, a torsion spring, and the like.
- This application mainly describes the first caster and the second caster.
- a third caster and more casters can be added after the second caster.
- the third caster can be designed with a corresponding driven link.
- a lever such as the above-mentioned follower 500
- a third pawl such as the above-mentioned follower 500
- a third ratchet structure such as the above-mentioned follower 500
- the present application also provides an ultrasound device.
- the ultrasound equipment can be various types of equipment using ultrasound, for example, it can be an ultrasound diagnostic instrument, especially a desktop digital ultrasound diagnostic instrument.
- the ultrasonic device includes a caster control device as shown in any one of the above, so that the ultrasonic device can conveniently control the state of the caster through the pedal 400, and the caster control device has a simple structure, convenient operation, and Greatly reduce the cost of ultrasound equipment and improve the convenience of use of ultrasound equipment.
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Abstract
一种脚轮控制装置及超声设备，通过由设备底座（100）、踏板（400）、连接杆（600）和从动件（500）组成的连杆机构一体联动带动第一棘爪（410）和第二棘爪（510）运动，从而使其能分别对第一棘轮（310）和第二棘轮（320）进行锁止。当需要解锁时，也可以控制踏板来一体联动地解除第一棘轮和第二棘爪的锁止状态。这种结构操作非常方便，只需对踏板进行控制即可，而且，该结构实现起来比较简单，能够有效降低成本，便于量产使用。
Description
本申请涉及一种超声设备，具体涉及一种脚轮控制结构及超声设备。
超声设备通常体积会比较大，尤其是台式超声设备，其通常会具备主机、控制面板以及显示装置等，因此会在主机上设置脚轮，以便于设备的移动。例如，一种台式数字超声诊断仪可能会配有3个及以上脚轮。为了使设备能够稳定的停在想要的位置，通常要求脚轮具有刹车功能。
一些超声设备中每个轮子自带刹车踏板，医生需要分别踩踏单轮，例如，先锁机器前面的几个轮，再绕到机器后面锁后面的几个轮，操作很麻烦。如果只锁其中的某些脚轮，那么容易导致刹车力不足。另一些超声设备中采用中央刹车结构，可以统一管理脚轮的解锁和锁止。但是这种中央刹车结构非常复杂、整套成本非常高。
本申请提供一种脚轮控制装置及超声设备，用以简化脚轮控制装置的结构。
一个实施例中，提供了一种脚轮控制装置, 包括设备底座、第一脚轮和第二脚轮，所述第一脚轮和第二脚轮分别可转动的安装在设备底座上，且所述第一脚轮和第二脚轮前后设置，所述第一脚轮的转动中心线与第二脚轮的转动中心线平行，还包括：
第一棘轮，所述第一棘轮具有棘齿，并与第一脚轮同轴心固定连接；
第二棘轮，所述第二棘轮具有棘齿，并与第二脚轮同轴心固定连接；
踏板，所述踏板可转动的安装在设备底座上，所述踏板上设置有第一棘爪，在所述踏板转动过程中带动第一棘爪卡入第一棘轮的棘齿之间，实现制动；
从动件，所述从动件可转动的安装在设备底座上，所述从动件上设置有第二棘爪，在所述从动件转动过程中带动第二棘爪卡入第二棘轮的棘齿之间，实现制动；
以及连接杆，所述连接杆两端分别与踏板和从动件转动连接，所述所述踏板通过所述连接杆带动所述从动件转动。
一个实施例中，所述踏板固定安装有第一棘爪轴，所述第一棘爪固定连接在第一棘爪轴上，所述连接杆的一端可转动地连接在第一棘爪轴上。
一个实施例中，所述从动件固定安装有第二棘爪轴，所述第二棘爪固定连接在第二棘爪轴上，所述连接杆的一端可转动地连接在第二棘爪轴上。
一个实施例中，在所述第一棘爪插入第一棘轮的棘齿后，所述第一棘轮的棘齿对第一棘爪的作用力方向经过所述踏板的转动中心线。
一个实施例中，在所述第二棘爪插入第二棘轮的棘齿后，所述第二棘轮的棘齿对第二棘爪的作用力方向经过所述从动件的转动中心线。
一个实施例中，还包括第一弹性件，所述第一弹性件一端与踏板或第一棘爪连接，并随所述踏板和第一棘爪运动，所述第一弹性件的另一端连接在与踏板和第一棘爪分离设置的一个支点上，在所述第一棘爪插入第一棘轮之前，所述第一弹性件向踏板和/或第一棘爪施加使第一棘爪向解锁方向运动的扭矩，在所述第一棘爪与第一棘轮锁止后，所述第一弹性件向踏板和/或第一棘爪施加使第一棘爪锁止方向运动的扭矩。
一个实施例中，还包括第二弹性件，所述第二弹性件一端与从动件或第二棘爪连接，并随所述从动件和第二棘爪运动，所述第二弹性件的另一端连接在与从动件和第二棘爪分离设置的一个支点上，在所述第二棘爪插入第二棘轮之前，所述第二弹性件向从动件和/或第二棘爪施加使第二棘爪向解锁方向运动的扭矩，在所述第二棘爪与第二棘轮锁止后，所述第二弹性件向从动件和/或第二棘爪施加使第二棘爪锁止方向运动的扭矩。
一个实施例中，所述第一脚轮包括至少两个，其中至少一个第一脚轮对应设置有第一棘轮和第一棘爪，所有第一脚轮并排设置，且均能够沿同一转动中心线转动。
一个实施例中，所述第二脚轮包括至少两个，其中至少一个第二脚轮对应设置有第二棘轮和第二棘爪，所有第二脚轮并排设置，且均能够沿同一转动中心线转动。
一个实施例中，所述连接杆与所述设备底座所在的平面平行。
一个实施例中，所述设备底座、踏板、连接杆和从动件形成平行四连杆机构，所述平行四连杆机构带动第一棘爪和第二棘爪联动。
一个实施例中，提供了一种超声设备，包括如上述任一项所述的脚轮控制装置。
依据上述实施例的脚轮控制装置及超声设备，通过由设备底座、踏板、连接杆和从动件组成的连杆机构一体联动带动第一棘爪和第二棘爪运动，从而使其能分别对第一棘轮和第二棘爪进行锁止，当需要解锁时，也可以控制踏板来一体联动地解除第一棘轮和第二棘爪的锁止状态。这种结构操作非常方便，只需对踏板进行控制即可，而且，该结构实现起来比较简单，能够有效降低成本，便于量产使用。
图1为本申请一种实施例中脚轮控制装置的结构示意图；
图2为图所示实施例的分解图；
图3为本申请一种实施例中脚轮处于解锁状态的示意图；
图4为图3中A部分的放大示意图；
图5为本申请一种实施例中脚轮处于锁止状态的示意图；
图6为图5中B部分的放大示意图；
图7为本申请一种实施例中在锁止状态下第一棘爪受力示意图；
图8为本申请一种实施例中第一弹性件向第一棘爪施加解锁扭矩的示意图；
图9为本申请一种实施例中第一弹性件向第一棘爪施加锁止扭矩的示意图。
具体实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。在某些情况下，本申请相关的一些操作并没有在说明书中显示或者描述，这是为了避免本申请的核心部分被过多的描述所淹没，而对于本领域技术人员而言，详细描述这些相关操作并不是必要的，他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。
另外，说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时，方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此，说明书和附图中的各种顺序只是为了清楚描述某一个实施例，并不意味着是必须的顺序，除非另有说明其中某个顺序是必须遵循的。
本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接（联接）。
本申请提供了一种脚轮控制装置，该脚轮控制装置用于超声设备，该超声设备可以为各类型应用超声波的设备，例如可以是超声诊断仪，尤其是台式数字超声诊断仪等。该脚轮控制装置可方便地解锁和锁止脚轮，方便使用者的操作。
请参考图1和2，一种实施例中，该脚轮控制装置包括设备底座100、第一脚轮210、第二脚轮220、第一棘轮310、第二棘轮320、踏板400、从动件500以及连接杆600。
该第一脚轮210和第二脚轮220分别可转动的安装在设备底座100上。第一脚轮210和第二脚轮220前后设置，且第一脚轮210的转动中心线与第二脚轮220的转动中心线平行。
该第一棘轮310具有棘齿，其与第一脚轮210同轴心连接。该第二棘轮320具有棘齿，其与第二脚轮220同轴心连接。第一棘轮310与第一脚轮210可以是能够组装到一起的分离的部件，也可以是整体形成的一个部件（即第一棘轮310和第一脚轮210可以集成为同一个部件）。第二棘轮320与第二脚轮220可以是能够组装到一起的分离的部件，也可以是整体形成的一个部件（即第二棘轮320与第二脚轮220可以集成为同一个部件）。
踏板400可转动的安装在设备底座100上。例如，可以在设备底座100上安装有安装座710，将踏板400通过转轴安装在该安装座710上。该踏板400上设置有第一棘爪410，该第一棘爪410与第一棘轮310匹配。请参考图3和4，常规状态下，该踏板400和第一棘爪410处于解锁状态，此时，第一棘轮310处于解锁状态。请参考图5和6，踏下踏板400以后，在踏板400转动过程中带动第一棘爪410卡入第一棘轮310的棘齿之间（即两个棘齿之间的间隙内），实现制动。由于第一棘轮310与第一脚轮210一体转动，因此当第一棘轮310被锁止后，第一脚轮210和第一棘轮310整体都被锁止，无法转动。
该从动件500也以可转动的方式安装在设备底座100上。同样，其也可以通过转轴安装在固定于设备底座100上的安装座720上。该从动件500上设置有第二棘爪510，该第二棘爪510与第二棘轮320匹配，在从动件500转动过程中带动第二棘爪510卡入第二棘轮320的棘齿之间（即两个棘齿之间的间隙内），实现制动。同样地，由于第二棘轮320与第二脚轮220一体转动，因此当第二棘轮320被锁止后，第二脚轮220和第二棘轮320整体都被锁止，无法转动。
在动力传送方面，请参考图1和2，该连接杆600两端分别与踏板400和从动件500可转动地连接，连接杆600可以与设备底座100所在的平面平行，使得设备底座100、踏板400、连接杆600和从动件500形成平行四连杆机构，其中踏板400作为主动元件，从动件500作为从动元件。基于平行四边形机构的特性，该踏板400在设备底座100上转动时，将会通过连接杆600带动从动件500产生相同方向的运动，从而通过该平行四连杆机构带动第一棘爪410和第二棘爪510联动，同时对第一棘轮310和第二棘轮320进行锁止和解锁，实现多个脚轮的一体联动设计。
当然，该第一脚轮210和第二脚轮220可以包括一个以上。例如，一种实施例中，该第一脚轮210包括至少两个，其中至少一个第一脚轮210对应设置有第一棘轮310和第一棘爪410，所有第一脚轮210并排设置，且均能够沿同一转动中心线转动。同样地，一种实施例中，该第二脚轮220也可以包括至少两个，其中至少一个第二脚轮220对应设置有第二棘轮320和第二棘爪510，所有第二脚轮220并排设置，且均能够沿同一转动中心线转动。请参考图1和2，一种更具体的实施例中，该第一脚轮210和第二脚轮220各为两个，其分布在设备底座100的两侧。一个未图示的实施例中，第一脚轮可以为两个，第二脚轮可以为一个。
该第一棘爪410与踏板400固定连接，例如请参考图1和2，一种实施例中，该踏板400固定安装有第一棘爪轴420，该第一棘爪410固定连接在第一棘爪轴420上。同时，连接杆600的一端可转动地连接在该第一棘爪轴420上，从而实现该连接杆600与踏板400的转动连接，其中，该可转动的连接方式包括但不限于铰接的连接方式。在其他一些实施例中，该第一棘爪410除了固定在第一棘爪轴420上，还可以安装在踏板400的其他位置。同时，该第一棘爪410可与踏板400通过螺接固定、焊接、粘接、卡接或其他固定方式实现连接。
请继续参考图1和2，一种实施例中，从动件500安装有第二棘爪轴520，第二棘爪510固定连接在第二棘爪轴520上，连接杆600的另一端可转动地连接在该第二棘爪轴520上，从而实现该连接杆600与从动件500的转动连接，其中，该可转动的连接方式包括但不限于铰接的连接方式。在其他一些实施例中，该第二棘爪510除了固定在第二棘爪轴520上，还可以安装在从动件500的其他位置。该第二棘爪510可与从动件500通过螺接固定、焊接、粘接、卡接或其他固定方式实现连接。
在设置一个第一脚轮的实施例中，相应的第一棘爪也可以直接设置在踏板上，而不设置第一棘爪轴。类似地，在设置一个第二脚轮的实施例中，相应的第二棘爪也可以直接设置在从动件上，而不设置第二棘爪轴。
在设置多个第一脚轮的实施例中，相应的第一棘爪也可以设置多个，例如可以每个第一脚轮对应设置一个第一棘爪，当然也可以只有部分第一脚轮设有相应的第一棘爪。类似地，在设置多个第二脚轮的实施例中，相应的第二棘爪也可以设置多个，例如可以每个第二脚轮对应设置一个第二棘爪，当然也可以只有部分第二脚轮设有相应的第二棘爪。
进一步地，在某些实施例中，如果第一脚轮210有运动趋势，第一棘轮310对第一棘爪410产生的反作用力可能会使该锁止结构有解锁趋势。对此，为了使第一棘爪410和第一棘轮310具有更好的锁止性，请参考图7，一种实施例中，在第一棘爪410插入第一棘轮310的棘齿后，使第一棘轮310的棘齿对第一棘爪410的作用力方向a经过踏板400的转动中心线（即第一棘爪410的转动中心线）。此时，第一棘轮310的棘齿对第一棘爪410的作用力相对于踏板400的转动中心来说力臂L=0，不会促使踏板400和第一棘爪410向解锁方向运动，因此该锁止结构具备了自锁功能，第一棘轮310的棘齿施加再大的作用力，也不会使刹车误解锁，只能通过踏板400才能解锁。
同样地，在一种实施例中，也可以对第二棘爪510和第二棘轮320进行相同的改进，即在第二棘爪510插入第二棘轮320的棘齿后，使第二棘轮320的棘齿对第二棘爪510的作用力方向经过从动件500（即第二棘爪510的转动中心线）的转动中心线。
这种针对第一棘爪410和第二棘爪510的自锁设计，可以通过对第一棘爪410和第二棘爪510的形状和尺寸以及第一棘轮310和第二棘轮320上棘齿的形状和尺寸进行针对性设计实现。
进一步地，为了使第一棘爪410能够稳定的停留在解锁和锁止状态，请参考图8和9，一种实施例中，还包括第一弹性件810。该第一弹性件810一端与踏板400或第一棘爪410连接，并随踏板400和第一棘爪410运动，该第一弹性件810的另一端连接在与踏板400和第一棘爪410分离设置的一个支点820上。该支点820不随踏板400和第一棘爪410运动，因此，第一弹性件810的一端在与踏板400和第一棘爪410运动时，将会产生弹性形变，从而通过该弹性形变对第一棘爪410形成解锁扭矩或锁止扭矩。
如图8所示，在第一棘爪410插入第一棘轮310之前，该第一弹性件810向踏板400和/或第一棘爪410施加使第一棘爪410向解锁方向（如图8中箭头所示）运动的扭矩（本申请中称为解锁扭矩）。该解锁扭矩可以促使第一棘爪410和踏板400保持在解锁状态，直到受到操作者外力克服该扭矩后，才向锁止位置移动。
具体地，如图9所示，在第一棘爪410与第一棘轮310锁止后，该第一弹性件810向踏板400和/或第一棘爪410施加使第一棘爪410锁止方向（如图9中箭头所示）运动的扭矩（本申请中称为锁止扭矩）。该锁止扭矩可以促使第一棘爪410和踏板400保持在锁止状态，直到受到操作者外力克服该扭矩后，才向解锁位置移动。
如图8和9所示，在该实施例中，该第一弹性件810以拉簧为例进行说明，该拉簧向第一棘爪410和踏板400提供拉力。当然，在其他实施例中，也可以采用压簧、扭簧等结构来实现该目的。
在以上所示的图8和9中主要以第一棘爪410和第一棘轮310为例进行了说明。当然，在其他实施例中，还可以包括第二弹性件。该第二弹性件一端与从动件500或第二棘爪510连接，并随从动件500和第二棘爪510运动。该第二弹性件的另一端连接在与从动件500和第二棘爪510分离设置的一个支点上，该支点不随从动件500和第二棘爪510运动，因此，在第二弹性件的一端与从动件500和第二棘爪510运动时，将会产生弹性形变，从而通过该弹性形变对第二棘爪510形成解锁扭矩或锁止扭矩。
具体地，在第二棘爪510插入第二棘爪510之前，第二弹性件向从动件500和/或第二棘爪510施加使第二棘爪510向解锁方向运动的扭矩（本申请中称为锁止扭矩），在第二棘爪510与第二棘爪510锁止后，第二弹性件向从动件500和/或第二棘爪510施加使第二棘爪510锁止方向运动的扭矩（本申请中称为锁止扭矩）。
当然，该第二弹性件也可以采用拉簧、压簧、扭簧等结构来实现。
本申请主要以第一脚轮和第二脚轮进行了阐述，在其他实施例中，还可在第二脚轮后增加第三脚轮以及更多脚轮，该第三脚轮可以针对性设计对应的从动连杆（如上述的从动件500）、第三棘爪和第三棘轮结构。
另一方面，本申请还提供了一种超声设备。该超声设备可以为各类型应用超声波的设备，例如可以是超声诊断仪，尤其是台式数字超声诊断仪等。在该实施例中，该超声设备包括如上述任一项所示的脚轮控制装置，从而使得该超声设备能够通过踏板400方便的控制脚轮的状态，而且该脚轮控制装置结构简单，操作方便，能够极大的降低超声设备的成本和提高超声设备的使用便利性。
以上应用了具体个例对本申请进行阐述，只是用于帮助理解本申请，并不用以限制本申请。对于本领域的一般技术人员，依据本申请的思想，可以对上述具体实施方式进行变化。
Claims (12)
- 一种脚轮控制装置, 包括设备底座、第一脚轮和第二脚轮，所述第一脚轮和第二脚轮分别可转动的安装在设备底座上，且所述第一脚轮和第二脚轮前后设置，所述第一脚轮的转动中心线与第二脚轮的转动中心线平行，其特征在于，还包括：第一棘轮，所述第一棘轮具有棘齿，并与第一脚轮同轴心固定连接；第二棘轮，所述第二棘轮具有棘齿，并与第二脚轮同轴心固定连接；踏板，所述踏板可转动的安装在设备底座上，所述踏板上设置有第一棘爪，在所述踏板转动过程中带动第一棘爪卡入第一棘轮的棘齿之间，实现制动；从动件，所述从动件可转动的安装在设备底座上，所述从动件上设置有第二棘爪，在所述从动件转动过程中带动第二棘爪卡入第二棘轮的棘齿之间，实现制动；以及连接杆，所述连接杆两端分别与踏板和从动件转动连接，所述踏板通过所述连接杆带动所述从动件转动。
- 如权利要求1所述的脚轮控制装置，其特征在于，所述踏板安装有第一棘爪轴，所述第一棘爪固定连接在第一棘爪轴上，所述连接杆的一端可转动地连接在所述第一棘爪轴上。
- 如权利要求1或2所述的脚轮控制装置，其特征在于，所述从动件安装有第二棘爪轴，所述第二棘爪固定连接在第二棘爪轴上，所述连接杆的一端可转动地连接在所述第二棘爪轴上。
- 如权利要求1-3任一项所述的脚轮控制装置，其特征在于，在所述第一棘爪插入第一棘轮的棘齿后，所述第一棘轮的棘齿对第一棘爪的作用力方向经过所述踏板的转动中心线。
- 如权利要求1-4中任一项所述的脚轮控制装置，其特征在于，在所述第二棘爪插入第二棘轮的棘齿后，所述第二棘轮的棘齿对第二棘爪的作用力方向经过所述从动件的转动中心线。
- 如权利要求1-5中任一项所述的脚轮控制装置，其特征在于，还包括第一弹性件，所述第一弹性件一端与踏板或第一棘爪连接，并随所述踏板和第一棘爪运动，所述第一弹性件的另一端连接在与踏板和第一棘爪分离设置的一个支点上，在所述第一棘爪插入第一棘轮之前，所述第一弹性件向踏板和/或第一棘爪施加使第一棘爪向解锁方向运动的扭矩，在所述第一棘爪与第一棘轮锁止后，所述第一弹性件向踏板和/或第一棘爪施加使第一棘爪锁止方向运动的扭矩。
- 如权利要求1-6中任一项所述的脚轮控制装置，其特征在于，还包括第二弹性件，所述第二弹性件一端与从动件或第二棘爪连接，并随所述从动件和第二棘爪运动，所述第二弹性件的另一端连接在与从动件和第二棘爪分离设置的一个支点上，在所述第二棘爪插入第二棘轮之前，所述第二弹性件向从动件和/或第二棘爪施加使第二棘爪向解锁方向运动的扭矩，在所述第二棘爪与第二棘轮锁止后，所述第二弹性件向从动件和/或第二棘爪施加使第二棘爪锁止方向运动的扭矩。
- 如权利要求1-7中任一项所述的脚轮控制装置，其特征在于，所述第一脚轮包括至少两个，其中至少一个第一脚轮对应设置有第一棘轮和第一棘爪，所有第一脚轮并排设置，且均能够沿同一转动中心线转动。
- 如权利要求1-8中任一项所述的脚轮控制装置，其特征在于，所述第二脚轮包括至少两个，其中至少一个第二脚轮对应设置有第二棘轮和第二棘爪，所有第二脚轮并排设置，且均能够沿同一转动中心线转动。
- 如权利要求1-9中任一项所述的脚轮控制装置，其特征在于，所述连接杆与所述设备底座所在的平面平行。
- 如权利要求1-9中任一项所述的脚轮控制装置，其特征在于，所述设备底座、踏板、连接杆和从动件形成平行四连杆机构，所述平行四连杆机构带动第一棘爪和第二棘爪联动。
- 一种超声设备，其特征在于，包括如权利要求1-9任一项所述的脚轮控制装置。
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| US1592715A (en) * | 1920-01-27 | 1926-07-13 | Birkigt Marc | Braking device |
| NL1013494C2 (nl) * | 1999-11-04 | 2001-05-07 | Pieter Beintema | Rem- en blokkeerinrichting voor een skelter. |
| CN102821978A (zh) * | 2010-04-07 | 2012-12-12 | 爱尔康研究有限公司 | 用于控制台制动的系统和方法 |
| CN204020951U (zh) * | 2014-08-21 | 2014-12-17 | 苏州华瑞腾航空设备有限公司 | 航空餐车用底盘结构 |
| CN104512442A (zh) * | 2013-09-30 | 2015-04-15 | 鸿富锦精密工业(武汉)有限公司 | 推车 |
| CN105626726A (zh) * | 2014-11-03 | 2016-06-01 | 青岛海尔洗碗机有限公司 | 一种脚轮刹车装置及洗碗机 |
| CN108290596A (zh) * | 2015-11-25 | 2018-07-17 | 医疗技术股份有限公司 | 用于将脚轮上的运载工具稳定在地板上的机械系统 |
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| CN2259338Y (zh) * | 1996-02-17 | 1997-08-13 | 乔安娜·A·尼可斯 | 可同时固定双轮的止动装置 |
| US6782976B2 (en) * | 2002-06-28 | 2004-08-31 | Htc Products, Inc. | Brake and wheel assembly |
| JP4368101B2 (ja) * | 2002-10-11 | 2009-11-18 | 花岡車輌株式会社 | ブレーキキャスター付運搬車 |
| GB2396671B (en) * | 2002-12-23 | 2005-12-14 | Link Treasure Ltd | Brake device of a pushcart |
| FR2850933B1 (fr) * | 2003-02-12 | 2005-04-15 | Ampafrance | Poussette a moyens de commande de blocage et du deblocage du freinage separes et places au voisinage les uns des autres |
| CN2782508Y (zh) * | 2005-03-01 | 2006-05-24 | 明门实业股份有限公司 | 推车的车轮制动装置 |
| CN201405909Y (zh) * | 2009-01-19 | 2010-02-17 | 宝钜实业股份有限公司 | 婴儿手推车 |
| WO2012001717A1 (en) * | 2010-07-02 | 2012-01-05 | Ru In Car Srl | Braking assembly, particularly for wheels of trolleys, bins and manually moved structures in general |
| CN103359149B (zh) * | 2012-03-26 | 2016-08-03 | 明门香港股份有限公司 | 刹车机构及具有该刹车机构的儿童载具 |
| CN202654639U (zh) * | 2012-05-11 | 2013-01-09 | 王本寰 | 收折式高尔夫球车 |
| JP6483431B2 (ja) * | 2014-12-18 | 2019-03-13 | 東海キャスター株式会社 | 作動装置の作動切換機構とキャスタの制動機構 |
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2018
- 2018-09-12 WO PCT/CN2018/105228 patent/WO2020051799A1/zh active Application Filing
- 2018-09-12 CN CN201880097041.3A patent/CN112654552B/zh active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1592715A (en) * | 1920-01-27 | 1926-07-13 | Birkigt Marc | Braking device |
| NL1013494C2 (nl) * | 1999-11-04 | 2001-05-07 | Pieter Beintema | Rem- en blokkeerinrichting voor een skelter. |
| CN102821978A (zh) * | 2010-04-07 | 2012-12-12 | 爱尔康研究有限公司 | 用于控制台制动的系统和方法 |
| CN104512442A (zh) * | 2013-09-30 | 2015-04-15 | 鸿富锦精密工业(武汉)有限公司 | 推车 |
| CN204020951U (zh) * | 2014-08-21 | 2014-12-17 | 苏州华瑞腾航空设备有限公司 | 航空餐车用底盘结构 |
| CN105626726A (zh) * | 2014-11-03 | 2016-06-01 | 青岛海尔洗碗机有限公司 | 一种脚轮刹车装置及洗碗机 |
| CN108290596A (zh) * | 2015-11-25 | 2018-07-17 | 医疗技术股份有限公司 | 用于将脚轮上的运载工具稳定在地板上的机械系统 |
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| CN112654552B (zh) | 2023-08-11 |
| CN112654552A (zh) | 2021-04-13 |
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