CN217066396U

CN217066396U - Brake mechanism and movable medical instrument

Info

Publication number: CN217066396U
Application number: CN202120791313.9U
Authority: CN
Inventors: 刘鹏
Original assignee: Wuhan Zhongke Medical Technology Industrial Technology Research Institute Co Ltd
Current assignee: Wuhan Zhongke Medical Technology Industrial Technology Research Institute Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-07-29
Anticipated expiration: 2031-04-16

Abstract

The utility model provides a in a pair of brake mechanism and portable medical instrument, the brake mechanism includes magnet subassembly, bottom plate and buffering portion, the magnet subassembly includes armature, the armature removes along a reference direction, the bottom plate sets up along the reference direction, the buffering portion sets up on the bottom plate faces the terminal surface of armature, the buffering portion is made by flexible material or elastic material; the armature is configured to be in abutting contact with the base plate through the buffer portion during movement in a direction toward the base plate. With the arrangement, when the armature contacts with the bottom plate, the kinetic energy of the armature is absorbed by the buffer part, so that the generated noise is reduced, and the problem of high noise when the brake mechanism works in the prior art is solved.

Description

Brake mechanism and movable medical instrument

Technical Field

The utility model relates to the technical field of medical equipment, in particular to arrestment mechanism and portable medical equipment.

Background

In the existing movable medical apparatus, the electromagnet and the armature sheet are attracted to each other to serve as a braking mechanism, and when the armature sheet is separated from the electromagnet, the armature sheet impacts a bottom plate, so that the contact noise of the armature sheet and the bottom plate is extremely high. In addition, the existing brake mechanism has the problems of large residual magnetism, nonadjustable gap, large power consumption and the like.

In summary, the main problem of the brake mechanism in the prior art is that the noise is large during operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brake mechanism and portable medical instrument has solved prior art, the great problem of brake mechanism during operation noise.

In order to solve the technical problem, the utility model provides a brake mechanism for movable medical equipment, the brake mechanism includes magnet subassembly, bottom plate and buffer part, the magnet subassembly includes armature, the armature moves along a reference direction, the bottom plate sets up along the reference direction, the buffer part sets up on the bottom plate towards the terminal surface of armature, the buffer part is made by flexible material or elastic material;

the armature is configured to be in abutting contact with the base plate through the buffer portion during movement in a direction toward the base plate.

Optionally, the material of the buffer part is sponge or spring.

Optionally, the reference direction is vertical, the bottom plate is located below the armature, and the armature moves toward the bottom plate under the action of gravity.

Optionally, the magnet assembly comprises a coil configured such that when de-energized, the armature is disengaged from the base plate, and when energized, the armature is in abutting contact with the base plate through the buffer.

Optionally, the magnet assembly further comprises a permanent magnet, and a first magnetic field generated by the permanent magnet is opposite to a second magnetic field generated by the coil when the coil is energized.

Optionally, a resultant force of the first magnetic field and the second magnetic field acting on the armature is smaller than a gravity borne by the armature.

Optionally, the magnetic force of the first magnetic field acting on the armature is greater than the gravitational force of the armature.

Optionally, a projected area of the armature on the bottom plate along the reference direction is smaller than a projected area of the buffer portion on the bottom plate along the reference direction.

Optionally, the braking mechanism further includes a magnet base, the magnet assembly includes a coil, and the coil is fixedly disposed on the magnet base; the magnet seat is also fixedly connected with the bottom plate.

In order to solve the technical problem, the utility model also provides a portable medical instrument, including foretell arrestment mechanism.

To sum up, in the braking mechanism and the movable medical apparatus provided by the present invention, the braking mechanism includes a magnet assembly, a bottom plate and a buffering portion, the magnet assembly includes an armature, the armature moves along a reference direction, the bottom plate is disposed along the reference direction, the buffering portion is disposed on an end surface of the bottom plate facing the armature, and the buffering portion is made of a flexible material or an elastic material; the armature is configured to be in abutting contact with the base plate through the buffer portion during movement in a direction toward the base plate. With the arrangement, when the armature contacts with the bottom plate, the kinetic energy of the armature is absorbed by the buffer part, so that the generated noise is reduced, and the problem of high noise when the brake mechanism works in the prior art is solved.

Drawings

Those skilled in the art will appreciate that the drawings are provided for a better understanding of the invention and do not constitute any limitation on the scope of the invention. Wherein:

fig. 1 is a schematic structural diagram of a brake mechanism according to an embodiment of the present invention.

In the drawings:

1-a magnet assembly; 2-a magnet holder; 3-a buffer section; 4-a bottom plate; 5-a coil; 6-permanent magnet.

Detailed Description

To make the objects, advantages and features of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in simplified form and are not to scale, but rather are provided for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a", "an" and "the" are generally employed in a sense including "at least one", the terms "at least two" and "two or more" are generally employed in a sense including "two or more", and moreover, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or imply that there is a number of technical features being indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, which include not only the end points, but also the terms "mounted", "connected" and "connected" should be understood broadly, e.g., as a fixed connection, as a detachable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in the present application, the disposition of an element with another element generally only means that there is a connection, coupling, fit, or drive relationship between the two elements, and the connection, coupling, fit, or drive between the two elements may be direct or indirect through intermediate elements, and is not to be understood as indicating or implying any spatial relationship between the two elements, i.e., an element may be in any orientation within, outside, above, below, or to one side of another element unless the content clearly dictates otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The core idea of the utility model is to provide a brake mechanism and portable medical instrument for among the solution prior art, the great problem of brake mechanism during operation noise.

The following description refers to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a braking mechanism according to an embodiment of the present invention.

Fig. 1 shows a brake mechanism for a movable medical instrument, the brake mechanism comprising a magnet assembly 1, a base plate 4 and a buffer part 3, the magnet assembly 1 comprising an armature, the armature moving in a reference direction, the base plate 4 being arranged in the reference direction, the buffer part being arranged on an end surface of the base plate 4 facing the armature, the buffer part 3 being made of a flexible or elastic material; the armature is configured to be in abutting contact with the bottom plate 4 through the buffer portion 3 during movement in a direction toward the bottom plate 4. With the configuration, when the armature contacts the bottom plate 4, the kinetic energy of the armature is absorbed by the buffer part 3, and compared with the direct collision between the armature and the bottom plate 4, the generated noise is reduced, and the problem of high noise when the brake mechanism works in the prior art is solved.

Further, the material of the buffer part 3 is sponge. Armature is in to the direction of bottom plate 4 removes the in-process, takes place the striking with buffer 3 that sponge material made, and the kinetic energy of self is whole to be converted into buffer 3's elastic potential energy, has played the cushioning effect, and the hole structure of sponge material itself has played the sound effect of inhaling again to further reduced the noise. In one embodiment, the material of the buffer portion 3 is a spring, and the spring can also absorb the kinetic energy of the armature, so as to reduce noise.

Preferably, the reference direction is vertical, the bottom plate 4 is located below the armature, and the armature moves toward the bottom plate 4 under the action of gravity. Through reasonable setting the brake mechanism utilizes gravity to accomplish armature motion process, does not need extra design power unit, has simplified overall structure. It should be noted that the vertical direction here means a vertical direction substantially along the action of gravity, but is to be broadly understood as a direction within a certain range (for example, 15 °) from the vertical line direction.

In an embodiment, the magnet assembly 1 comprises a coil 5, the coil 5 being configured such that when de-energized, the armature is disengaged from the base plate 4, the coil 5 being further configured such that when energized, the armature is in abutting contact with the base plate 4 via the buffer 3. Because the movable medical apparatus is in a braking state in most of time (more than or equal to 95%), the braking mechanism is required to be in a non-braking state only when the movable medical apparatus needs to be moved, so that the stability of the main body of the movable medical apparatus and the realization of other functions of the movable medical apparatus are ensured. If the scheme that the armature is separated from the bottom plate 4 when the coil 5 is powered on and the armature is in abutting contact with the bottom plate 4 through the buffer part 3 when the coil 5 is powered off is selected, the coil 5 needs to be powered on within more than or equal to 95% of the time, the power consumption is high, and meanwhile, the service life of the coil 5 is shortened. In the solution shown in the present embodiment, the coil 5 is in the power-off state for most of the time, so that the power consumption is small, and the service life of the coil 5 is longer.

Further, the magnet assembly 1 further comprises a permanent magnet 6, and a first magnetic field generated by the permanent magnet 6 is opposite to a second magnetic field generated by the coil 5 when the coil is electrified. Meanwhile, the resultant force of the first magnetic field and the second magnetic field acting on the armature is smaller than the gravity borne by the armature, and the magnetic force of the first magnetic field acting on the armature is larger than the gravity of the armature. So configured, when the coil 5 is de-energized, the magnet assembly 1 only generates the first magnetic field, and the armature is disengaged from the bottom plate 4 under the action of the first magnetic field and outputs a braking force. At this time, the movable medical instrument is in a stable state and can realize other functions. When the coil 5 is powered on, the magnet assembly 1 further generates the second magnetic field opposite to the first magnetic field in direction, and as the resultant force of the first magnetic field and the second magnetic field acting on the armature is smaller than the gravity borne by the armature, the armature abuts against the bottom plate 4 through the buffer part 3 under the action of gravity, at the moment, the braking force disappears, and the movable medical instrument is in a movable state, so that an operator can be allowed to move the movable medical instrument to other places. Further, the resultant force of the first magnetic field and the second magnetic field acting on the armature can be configured to be zero, so that the acting force of gravity on the armature is larger, the armature is ensured to be capable of being timely separated from the attraction of the magnet assembly 1, and the braking force is eliminated. It will be appreciated that the shape, relative position, etc. of the coil 5 and the permanent magnet 6 can be suitably arranged by those skilled in the art to produce the first and second magnetic fields as desired.

In one embodiment, the projected area of the armature on the base plate 4 along the reference direction is smaller than the projected area of the buffer portion 3 on the base plate along the reference direction. With the configuration, the armature completely falls in the buffer part 3 when abutting against the bottom plate 4, so that the kinetic energy is absorbed more fully, and the noise of the brake mechanism is reduced more favorably.

In one embodiment, the brake mechanism further comprises a magnet holder 2, the magnet assembly 1 comprises a coil 5, and the coil 5 is fixedly arranged on the magnet holder 2; the magnet seat 2 is also fixedly connected with the bottom plate 4. Preferably, the coil 5 is fixed to the magnet holder 2 by a screw provided along the reference direction, and a positioning pin is provided to limit the rotational freedom of the coil 5 along the circumferential direction thereof. Due to the arrangement, failure phenomena such as displacement of the coil 5 relative to the armature and the like are not easy to occur when the brake mechanism works, and the moving direction of the armature is also ensured. The specific shape of the magnet holder 2 is not particularly limited in the present embodiment, and those skilled in the art can select and arrange the magnet holder according to the actual situation.

In order to solve the above technical problem, the present invention further provides a movable medical apparatus, for example, a movable DR (Digital Radiography) device, a movable CT (Computed Tomography) device, a movable MR (Magnetic Resonance Imaging) device, etc., including the above-mentioned brake mechanism. The movable medical instrument has the same beneficial effect as the brake mechanism has the beneficial effect of being less noisy. Other components and structures of the ambulatory medical device may be provided by those skilled in the art in view of the actual state of the art, and the principles of the provision of the ambulatory medical device and other components will not be described in detail herein.

To sum up, in the braking mechanism and the movable medical apparatus provided by the present invention, the braking mechanism includes a magnet assembly 1, a bottom plate 4 and a buffering portion 3, the magnet assembly 1 includes an armature, the armature moves along a reference direction, the bottom plate 4 is disposed along the reference direction, the buffering portion is disposed on an end surface of the bottom plate 4 facing the armature, and the buffering portion 3 is made of a flexible material or an elastic material; the armature is configured to be in abutting contact with the bottom plate 4 through the buffer portion 3 during movement in a direction toward the bottom plate 4. With the configuration, when the armature contacts the bottom plate 4, the kinetic energy of the armature is absorbed by the buffer part 3, so that the generated noise is reduced, and the problem of high noise when the brake mechanism works in the prior art is solved.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. A brake mechanism is characterized by comprising a magnet assembly, a bottom plate and a buffer part, wherein the magnet assembly comprises an armature, the armature moves along a reference direction, the bottom plate is arranged along the reference direction, the buffer part is arranged on the end face, facing the armature, of the bottom plate, and the buffer part is made of a flexible material or an elastic material;

2. The brake mechanism of claim 1, wherein the material of the buffer portion is a sponge or a spring.

3. The brake mechanism of claim 1, wherein the reference direction is vertical, the base plate is located below the armature, and the armature moves toward the base plate under the force of gravity.

4. The brake mechanism of claim 3, wherein the magnet assembly includes a coil configured such that when de-energized, the armature disengages from the base plate, and wherein when energized, the armature makes abutting contact with the base plate through the bumper.

5. The brake mechanism of claim 4, wherein the magnet assembly further comprises a permanent magnet that generates a first magnetic field in a direction opposite to a second magnetic field generated when the coil is energized.

6. The brake mechanism of claim 5, wherein a combined force of the first and second magnetic fields acting on the armature is less than a gravitational force experienced by the armature.

7. The brake mechanism of claim 5, wherein the magnetic force of the first magnetic field acting on the armature is greater than the weight force of the armature.

8. The brake mechanism of claim 1, wherein a projected area of the armature on the base plate in the reference direction is smaller than a projected area of the buffer portion on the base plate in the reference direction.

9. The brake mechanism of claim 1, further comprising a magnet holder, wherein the magnet assembly comprises a coil fixedly disposed on the magnet holder; the magnet seat is also fixedly connected with the bottom plate.

10. An ambulatory medical device, comprising a braking mechanism according to any one of claims 1 to 9.