CN112654552B - Caster controls and ultrasonic equipment - Google Patents

Abstract

A caster control device and ultrasonic equipment, which drive the first pawl (410) and the first pawl (410) and The second ratchet (510) moves so that it can lock the first ratchet (310) and the second ratchet (320) respectively. When unlocking is required, the pedal can also be controlled to release the locked state of the first ratchet and the second ratchet in an integrated manner. This structure is very convenient to operate, and only needs to control the pedals. Moreover, the structure is relatively simple to implement, can effectively reduce costs, and is convenient for mass production and use.

Description

Caster controls and ultrasonic equipment

technical field

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

Background technique

Ultrasound equipment is usually relatively large in size, especially desktop ultrasound equipment, which usually has a host, a control panel, and a display device, etc., so casters are provided on the host to facilitate the movement of the equipment. For example, a desktop digital ultrasound diagnostic instrument may be equipped with 3 or more casters. In order to make the equipment stop at the desired position stably, the casters are usually required to have a brake function.

In some ultrasound equipment, each wheel has its own brake pedal, and the doctor needs to step on a single wheel separately. For example, first lock the front wheels of the machine, and then go around to the back of the machine to lock the rear wheels. The operation is very troublesome. If only some of the casters are locked, it is easy to cause insufficient braking force. Other ultrasonic equipment adopts a central brake structure, which can uniformly manage the unlocking and locking of the casters. But this central brake structure is very complicated, and the whole set cost is very high.

Contents of the invention

The present application provides a caster control device and ultrasonic equipment, which are used to simplify the structure of the caster control device.

In one embodiment, a caster control device is provided, including an equipment base, a first caster and a second caster, the first caster and the second caster are respectively rotatably mounted on the equipment base, and the first caster and the second caster are arranged front and rear, the rotation centerline of the first caster is parallel to the rotation centerline of the second caster, and also includes:

a first ratchet, the first ratchet has ratchets and is fixedly connected with the first caster;

a second ratchet, the second ratchet has ratchets and is fixedly connected with the second caster;

A pedal, the pedal is rotatably installed on the equipment base, the pedal is provided with a first pawl, and the first pawl is driven to be inserted between the ratchets of the first ratchet during the rotation of the pedal to realize the control move;

The follower, the follower is rotatably installed on the equipment base, the follower is provided with a second pawl, and the second pawl is driven to snap into the second ratchet during the rotation of the follower between the ratchet teeth to achieve braking;

and a connecting rod, the two ends of the connecting rod are respectively connected in rotation with the pedal and the follower, and the pedal drives the follower to rotate through the connecting rod.

In one embodiment, 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 .

In one embodiment, the follower is fixedly installed 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 on axis.

In one embodiment, after the first pawl is inserted into the ratchet of the first ratchet, the force direction of the ratchet of the first ratchet on the first pawl passes through the rotation centerline of the pedal.

In one embodiment, after the second pawl is inserted into the ratchet of the second ratchet, the force direction of the ratchet of the second ratchet on the second pawl passes through the rotation centerline of the driven member.

In one embodiment, 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 to On a fulcrum separated from the pedal and the first pawl, before the first pawl is inserted into the first ratchet, the first elastic member applies force to the pedal and/or the first pawl so that the first pawl moves toward the pedal. The torque for moving in the unlocking direction, after the first pawl is locked with the first ratchet, the first elastic member applies a torque for moving the first pawl in a locking direction to the pedal and/or the first pawl.

In one embodiment, it also includes a second elastic member, one end of the second elastic member is connected with the follower or the second pawl, and moves with the follower and the second pawl, the second elastic member The other end of the is connected to a fulcrum separated from the follower and the second pawl, and before the second pawl is inserted into the second ratchet, the second elastic member moves towards the follower and/or the second ratchet. The pawl exerts a torque that moves the second pawl to the unlocking direction. After the second pawl is locked with the second ratchet, the second elastic member applies force to the follower and/or the second pawl to make the second Torque to move the pawl in the locking direction.

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

In one embodiment, the second castors include at least two, at least one of which is provided with a second ratchet and a second pawl correspondingly, and all the second casters are arranged side by side and can rotate along the same rotation centerline.

In one embodiment, the connecting rod is parallel to the plane where the equipment base is located.

In one embodiment, the equipment base, the pedal, the connecting rod and the follower form a parallel four-bar linkage mechanism, and the parallel four-bar linkage mechanism drives the first pawl and the second pawl for linkage.

In one embodiment, an ultrasonic device is provided, comprising the caster control device as described in any one of the above.

According to the caster control device and the ultrasonic equipment of the above-mentioned embodiments, the first pawl and the second pawl are driven to move through the linkage mechanism composed of the equipment base, the pedal, the connecting rod and the follower, so that they can respectively The first ratchet and the second ratchet are locked, and when unlocking is required, the pedal can also be controlled to release the locked state of the first ratchet and the second ratchet in an integrated manner. This structure is very convenient to operate, only need to control the pedals, and this structure is relatively simple to implement, can effectively reduce costs, and is convenient for mass production and use.

Description of drawings

Fig. 1 is a schematic structural view of a caster control device in an embodiment of the present application;

Figure 2 is an exploded view of the embodiment shown in the figure;

Fig. 3 is a schematic diagram of the caster in an unlocked state in an embodiment of the present application;

Fig. 4 is the enlarged schematic diagram of part A in Fig. 3;

Fig. 5 is a schematic diagram of a caster in a locked state in an embodiment of the present application;

Figure 6 is an enlarged schematic view of part B in Figure 5;

Fig. 7 is a schematic diagram of force on the first pawl in a locked state in an embodiment of the present application;

Fig. 8 is a schematic diagram of an unlocking torque applied to the first pawl by the first elastic member in an embodiment of the present application;

Fig. 9 is a schematic diagram of applying a locking torque to the first pawl by the first elastic member in an embodiment of the present application.

Detailed ways

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the application are not shown or described in the description, this is to avoid the core part of the application being overwhelmed by too many descriptions, and for those skilled in the art, it is necessary to describe these operations in detail Relevant operations are not necessary, and they can fully understand the relevant operations according to the description in the specification and general technical knowledge in the field.

In addition, the characteristics, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be exchanged or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment, and do not mean a necessary sequence, unless otherwise stated that a certain sequence must be followed.

The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application include direct and indirect connection (connection) unless otherwise specified.

The present application provides a caster control device. The caster control device is used for ultrasonic equipment. The ultrasonic equipment can be various types of ultrasonic equipment, for example, it can be an ultrasonic diagnostic instrument, especially a desktop digital ultrasonic diagnostic instrument. The caster control device can conveniently unlock and lock the caster, which is convenient for users to operate.

Please refer to Fig. 1 and 2, in an embodiment, the caster control device includes an equipment 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 respectively rotatably installed on the equipment base 100 . The first caster 210 and the second caster 220 are disposed front and rear, and the rotation centerline of the first caster 210 is parallel to the rotation centerline of the second caster 220 .

The first ratchet wheel 310 has ratchet teeth, which are coaxially connected with the first caster wheel 210 . The second ratchet wheel 320 has ratchet teeth, which are coaxially connected with the second caster wheel 220 . The first ratchet 310 and the first caster 210 may be separate parts that can be assembled together, or may be an integral part (that is, the first ratchet 310 and the first caster 210 may be integrated into the same part). The second ratchet 320 and the second caster 220 can be separate parts that can be assembled together, or can be an integral part (that is, the second ratchet 320 and the second caster 220 can be integrated into the same part).

The pedal 400 is rotatably installed on the equipment base 100 . For example, an installation base 710 may be installed on the device base 100, and the pedal 400 is installed on the installation 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 , in a normal state, the pedal 400 and the first pawl 410 are in an unlocked state, and at this time, the first ratchet 310 is in an unlocked state. Please refer to Figures 5 and 6. After stepping on the pedal 400, the first pawl 410 is driven to be inserted between the ratchet teeth of the first ratchet wheel 310 (that is, in the gap between the two ratchet teeth) during the rotation of the pedal 400 to realize brake. Since the first ratchet 310 and the first caster 210 rotate integrally, when the first ratchet 310 is locked, the first caster 210 and the first ratchet 310 are locked as a whole and cannot rotate.

The follower 500 is also rotatably mounted on the equipment base 100 . Likewise, it can also be installed on the mounting seat 720 fixed on the equipment base 100 through a rotating shaft. The follower 500 is provided with a second pawl 510, the second pawl 510 is matched with the second ratchet 320, and the second pawl 510 is driven to snap into the ratchet of the second ratchet 320 during the rotation of the follower 500 Between (that is, in the gap between the two ratchets), braking is achieved. Similarly, since the second ratchet 320 and the second caster 220 rotate integrally, when the second ratchet 320 is locked, the second caster 220 and the second ratchet 320 are locked as a whole and cannot rotate.

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

Certainly, 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 the first ratchet 310 and the first pawl 410 correspondingly, all the first casters 210 are arranged side by side, and can Rotate along the same centerline of rotation. Similarly, in one embodiment, the second caster 220 may also include at least two, wherein 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 can rotate along the same rotation center line. Please refer to FIGS. 1 and 2 . In a more specific embodiment, there are two first casters 210 and two second casters 220 , which are distributed on both sides of the equipment base 100 . In an embodiment not shown, there may be two first casters, and one second caster.

The first pawl 410 is fixedly connected with the pedal 400. For example, please refer to FIGS. on the ratchet shaft 420 . At the same time, 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, wherein the rotatable connection includes but not limited to a hinged connection . In some other embodiments, the first pawl 410 can be installed on other positions of the pedal 400 besides being fixed on the first pawl shaft 420 . At the same time, the first pawl 410 can be connected with the pedal 400 by screwing, welding, bonding, clamping or other fixing methods.

Please continue to refer to FIGS. 1 and 2. In one embodiment, the follower 500 is equipped 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 can be It is rotatably connected to the second ratchet shaft 520 so as to realize the rotatable connection between the connecting rod 600 and the follower 500 , wherein the rotatable connection includes but not limited to a hinged connection. In some other embodiments, besides being fixed on the second pawl shaft 520 , the second pawl 510 can also be installed at other positions of the follower 500 . The second pawl 510 can be connected with the follower 500 by screwing, welding, bonding, clamping or other fixing methods.

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

In the embodiment where multiple first casters are provided, multiple corresponding first pawls can also be provided. the first pawl. Similarly, in the embodiment where multiple second casters are provided, multiple corresponding second pawls can also be provided, for example, one second pawl can be provided for each second caster, and of course only part of the second casters can be provided. A corresponding second pawl is provided.

Further, in some embodiments, if the first caster 210 tends to move, the reaction force generated by the first ratchet 310 on the first pawl 410 may make the locking structure tend to be unlocked. In this regard, in order to make the first pawl 410 and the first ratchet 310 have better locking performance, please refer to FIG. Make the force direction a of the ratchet of the first ratchet wheel 310 on the first pawl 410 pass through the centerline of rotation of the pedal 400 (ie the centerline of rotation of the first pawl 410 ). At this time, the force of the ratchet of the first ratchet wheel 310 on the first pawl 410 relative to the center of rotation of the pedal 400 is the force arm L=0, which will not cause the pedal 400 and the first pawl 410 to move in the unlocking direction. Therefore, the locking structure has a self-locking function, no matter how much force is applied by the ratchet teeth of the first ratchet wheel 310 , the brake will not be unlocked by mistake, and the brake can only be unlocked by the pedal 400 .

Likewise, in one embodiment, the same improvement can be made to the second ratchet 510 and the second ratchet 320, that is, after the second ratchet 510 is inserted into the ratchet of the second ratchet 320, the second ratchet 320 The force direction of the ratchet teeth on the second pawl 510 passes through the centerline of rotation of the follower 500 (ie, the centerline of rotation of the second pawl 510 ).

This self-locking design for the first ratchet 410 and the second ratchet 510 can be adjusted by the shape and size of the first ratchet 410 and the second ratchet 510 and the ratchets on the first ratchet 310 and the second ratchet 320 The shape and size are designed and realized in a targeted manner.

Further, in order to enable the first pawl 410 to stay in the unlocked and locked states stably, please refer to FIGS. 8 and 9 . In one embodiment, a first elastic member 810 is also included. One end of the first elastic member 810 is connected with the pedal 400 or the first pawl 410, and moves with the pedal 400 and the first pawl 410, and the other end of the first elastic member 810 is connected with the pedal 400 and the first pawl 410 The separation is set on a fulcrum 820 . 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, it will produce elastic deformation, so that the first The pawl 410 creates an unlocking torque or a locking torque.

As shown in FIG. 8 , before the first pawl 410 is inserted into the first ratchet 310 , the first elastic member 810 exerts force on the pedal 400 and/or the first pawl 410 so that the first pawl 410 moves toward the unlocking direction (as shown in FIG. 8 (indicated by the arrow in ) movement torque (referred to as unlocking torque in this application). The unlocking torque can keep the first pawl 410 and the pedal 400 in the unlocked state, and will not move to the locked position until the torque is overcome by an external force from the operator.

Specifically, as shown in FIG. 9 , after the first pawl 410 is locked with the first ratchet 310 , the first elastic member 810 applies force to the pedal 400 and/or the first pawl 410 to lock the first pawl 410 Direction (shown by the arrow in Figure 9) of the torque (referred to as the locking torque in this application). The locking torque can keep the first pawl 410 and the pedal 400 in the locked state, and will not move to the unlocked position until the torque is overcome by an external force from the operator.

As shown in FIGS. 8 and 9 , in this embodiment, the first elastic member 810 is illustrated by taking a tension spring as an example, and the tension spring provides tension to the first pawl 410 and the pedal 400 . Of course, in other embodiments, structures such as compression springs and torsion springs may also be used to achieve this purpose.

In FIGS. 8 and 9 shown above, the first pawl 410 and the first ratchet wheel 310 are mainly used as examples for illustration. Certainly, in other embodiments, a second elastic member may also be included. One end of the second elastic member is connected with 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 separated 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 When one end of the moving part, the follower 500 and the second pawl 510 move, an elastic deformation will be generated, so that an unlocking torque or a locking torque is formed on the second pawl 510 through the elastic deformation.

Specifically, before the second pawl 510 is inserted into the second pawl 510, 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 is called locking torque), after the second pawl 510 is locked with the second pawl 510, the second elastic member applies to the follower 500 and/or the second pawl 510 to lock the second pawl 510 Torque for directional movement (referred to as locking torque in this application).

Of course, the second elastic member can also be realized by using structures such as extension springs, compression springs, and torsion springs.

This application is mainly described with the first caster and the second caster. In other embodiments, a third caster and more casters can also be added behind the second caster. The third caster can be designed with a corresponding driven chain lever (as follower 500 described above), third pawl and third ratchet structure.

On the other hand, the present application also provides an ultrasonic device. The ultrasonic equipment can be various types of ultrasonic equipment, for example, it can be an ultrasonic diagnostic instrument, especially a desktop digital ultrasonic diagnostic instrument. In this embodiment, the ultrasonic equipment includes the caster control device as shown in any one of the above, so that the ultrasonic equipment can conveniently control the state of the caster through the pedal 400, and the caster control device is simple in structure, easy to operate, and can The cost of ultrasonic equipment is greatly reduced and the convenience of use of ultrasonic equipment is improved.

The above uses specific examples to illustrate the present application, which is only used to help understand the present application, and is not intended to limit the present application. For those skilled in the art, the above specific implementation manners may be changed according to the idea of the present application.

Claims (10)

1. A caster control device for ultrasonic equipment, comprising an equipment base, a first caster and a second caster, the first caster and the second caster are respectively rotatably installed on the equipment base, and the first caster and the second caster The two casters are arranged front and back, the rotation centerline of the first caster is parallel to the rotation centerline of the second caster, and it is characterized in that it also includes: a first ratchet, the first ratchet has ratchets and is fixedly connected with the first caster; a second ratchet, the second ratchet has ratchets and is fixedly connected with the second caster; Pedal, the pedal is rotatably installed on the equipment base, the pedal is equipped with a first pawl shaft, and the first pawl shaft is fixed with a first pawl; during the rotation of the pedal, the first pawl is driven The pawl is inserted between the ratchet teeth of the first ratchet wheel and moved out from the ratchet teeth of the first ratchet wheel, so as to brake and unlock the first caster wheel; The follower, the base of the equipment is provided with a mounting seat for installing the follower, the follower is rotatably connected to the mounting seat, the follower is installed with a second pawl shaft, the The second ratchet shaft is fixed with a second ratchet; during the rotation of the follower, the second ratchet is driven to be inserted between the ratchet teeth of the second ratchet wheel and moved out from the ratchet teeth of the second ratchet wheel, to achieve braking and unlocking of the second caster; and a connecting rod, the two ends of the connecting rod are respectively rotatably connected to the first pawl shaft and the second pawl shaft, and the pedal drives the second pawl shaft to rotate through the connecting rod. 2. The caster wheel control device according to claim 1, characterized in that, after the first ratchet is inserted into the ratchet of the first ratchet, the force direction of the ratchet of the first ratchet on the first ratchet is through the centerline of rotation of the pedal. 3. The caster wheel control device according to claim 1, characterized in that, after the second ratchet is inserted into the ratchet of the second ratchet, the force direction of the ratchet of the second ratchet on the second ratchet is through the centerline of rotation of the follower. 4. The caster wheel control device according to claim 1, further comprising a first elastic member, one end of the first elastic member is connected with the pedal or the first pawl, and is connected with the pedal and the first pawl movement, the other end of the first elastic member is connected to a fulcrum separated from the pedal and the first pawl, and before the first pawl is inserted into the first ratchet, the first elastic member moves towards the pedal and/or Or the first pawl applies a torque that moves the first pawl to the unlocking direction, and after the first pawl is locked with the first ratchet, the first elastic member applies force to the pedal and/or the first pawl to make the Torque for movement of the first pawl in the locking direction. 5. The caster wheel control device according to claim 1, further comprising a second elastic member, one end of the second elastic member is connected with the follower or the second pawl, and follows the follower and the second pawl. The second pawl moves, and the other end of the second elastic member is connected to a fulcrum separated from the follower and the second pawl. Before the second pawl is inserted into the second ratchet, the second The elastic member applies a torque to the driven member and/or the second pawl to move the second pawl in the unlocking direction, and after the second pawl and the second ratchet are locked, the second elastic member moves toward the driven member The component and/or the second pawl apply a torque to move the second pawl in the locking direction. 6. The caster control device according to claim 1, wherein the first caster comprises at least two, wherein at least one first caster is correspondingly provided with a first ratchet and a first pawl, and all the first casters are arranged side by side set, and all can rotate along the same rotation centerline. 7. The caster control device according to claim 1, wherein the second caster comprises at least two, wherein at least one second caster is correspondingly provided with a second ratchet and a second pawl, and all the second casters are arranged side by side set, and all can rotate along the same rotation centerline. 8. The caster control device according to claim 1, wherein the connecting rod is parallel to the plane where the equipment base is located. 9. The caster wheel control device according to any one of claims 1-8, characterized in that, the equipment base, the pedal, the connecting rod and the follower form a parallel four-bar linkage mechanism, and the parallel four-bar linkage mechanism Drive the first ratchet and the second ratchet linkage. 10. An ultrasonic device, characterized by comprising the caster control device according to any one of claims 1-9.