CN219954979U

CN219954979U - Connection assembly for magnetic resonance imaging apparatus and magnetic resonance imaging apparatus

Info

Publication number: CN219954979U
Application number: CN202321294392.8U
Authority: CN
Inventors: 许光辉
Original assignee: Neusoft Medical Systems Co Ltd; Shanghai Neusoft Medical Technology Co Ltd
Current assignee: Neusoft Medical Systems Co Ltd; Shanghai Neusoft Medical Technology Co Ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-11-03
Anticipated expiration: 2033-05-25

Abstract

The utility model relates to the technical field of medical equipment, and discloses a connecting component for magnetic resonance imaging equipment, which comprises a base, a connecting component and a connecting component, wherein the connecting component comprises a fixed end and a connecting end which is arranged opposite to the fixed end; a club head stem comprising a ferromagnetic or ferrimagnetic head portion and a stem portion; the ball head part is arranged in the spherical mounting groove, and the rod part is exposed from the stepped mounting groove; the pressing sleeve assembly is sleeved on the head rod and comprises a ball head pressing sleeve part, the ball head pressing sleeve part is sleeved on the rod part, the inner side edge of the ball head pressing sleeve part abuts against the ball head part, and the outer side of the ball head pressing sleeve part is connected with the cylindrical mounting groove. The ball head structure is favorable for adjusting the installation angle of the rod part, reduces the welding difficulty and improves the positioning accuracy of the welded screw rod.

Description

Connection assembly for magnetic resonance imaging apparatus and magnetic resonance imaging apparatus

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a connecting component for magnetic resonance imaging equipment and the magnetic resonance imaging equipment.

Background

Currently, magnetic resonance imaging (Magnetic Resonance Imaging, abbreviated as MRI) devices are used for imaging internal structures of the human body, wherein the magnetic resonance imaging devices have natural vibrations, which cannot be eliminated. Therefore, during use, the magnet itself, the gradient coil, etc. will vibrate, thereby loosening the fastener structure that secures the various components.

The magnets in the related art generally adopt a structural scheme of welding bolts, and subsequent components are installed in a locking mode of the bolt structure. For example, in the case of welding a nut to a magnet, it is necessary to scribe the magnet prior to welding, and the nut is welded to the magnet by scribing. Wherein, the positioning before welding and the deformation amount generated by welding can influence the installation of the fastener. Here, if the nut deviates from the reference position, vibration amplification during later use may be indirectly caused, resulting in loosening of the fastener; if the position of the nut deviates, the perpendicularity of the nut and the reference is greatly different, the requirement of flatness cannot be met after the fastener is installed, certain distortion exists, and the nut is easy to loosen under the condition of vibration.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the nut is fixed on the magnet in a welding mode, and the position of the nut can be shifted due to the influence of the positioning before welding and the deformation amount generated by welding, so that the welding difficulty is high. In addition, because the connecting piece and the fastener on the magnet are all made of stainless steel materials, interference fit locking is easy to happen to the connecting piece and the fastener in the process of installing the subsequent assembly, so that the subsequent assembly cannot be replaced and maintained.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the utility model and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the utility model and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a coupling assembling and magnetic resonance imaging equipment for magnetic resonance imaging equipment, can finely tune the angle of screw rod, reduces the welding degree of difficulty, improves the location accuracy of post-welding screw rod.

In some embodiments, the connection assembly for a magnetic resonance imaging apparatus includes a base, a ball stud, and a press sleeve assembly. The base comprises a fixed end and a connecting end, wherein the fixed end is fixed on a magnet of the magnetic resonance imaging equipment, the connecting end is opposite to the fixed end, a step mounting groove is formed in the end face of the connecting end, and the step mounting groove comprises a spherical mounting groove and a cylindrical mounting groove which are arranged from inside to outside; a club head stem comprising a ferromagnetic or ferrimagnetic head portion and a stem portion; the ball head part is arranged in the spherical mounting groove and is attached to the inner surface of the spherical mounting groove, and the rod part is exposed from the stepped mounting groove and is positioned at the top of the base and used for connecting all components; the pressing sleeve assembly is sleeved on the ball head rod, and the rod part is exposed from the pressing sleeve assembly; the pressing sleeve assembly comprises a ball head pressing sleeve part, the ball head pressing sleeve part is sleeved on the rod part, the inner side of the ball head pressing sleeve part is propped against the ball head part, and the outer side of the ball head pressing sleeve part is connected with the cylindrical mounting groove.

In some embodiments, the press sleeve assembly further comprises: the knob part is positioned on the periphery of the bulb pressing sleeve part.

In some embodiments, the connection assembly for a magnetic resonance imaging apparatus further comprises: the positioning nut is sleeved on the rod part and positioned on one side of the pressing sleeve component away from the base, the positioning nut is abutted with the upper part of the knob part, and the positioning nut is used for fixing the angle of the rod part.

In some embodiments, the abutment surface of the knob portion and the positioning nut comprises a curved surface.

In some embodiments, the stem is provided with external threads; and/or the rod part is provided with a connecting hole.

In some embodiments, a slot is formed in the side surface of the base, and the slot is closer to the fixed end than the spherical mounting groove; the connection assembly further includes: the shielding sheet group can be inserted into the slot to isolate the magnetism of the magnet to the spherical surface installation slot area so as to facilitate the installation of the ball head rod.

In some embodiments, the shield slice group includes a shield insert and a grip. A shielding insertion part inserted into the slot; the holding part is connected to the shielding insertion part and is positioned on the outer side of the base.

In some embodiments, the shield stack is comprised of a plurality of sheet structures of diamagnetic material.

In some embodiments, the base is made of a non-magnetic material.

In some embodiments, a magnetic resonance imaging apparatus comprises the connection assembly for a magnetic resonance imaging apparatus of the previous embodiments.

The connecting component for the magnetic resonance imaging device and the magnetic resonance imaging device provided by the embodiment of the disclosure can realize the following technical effects:

through fixing the base welding on the magnet of magnetic resonance imaging equipment, set up the ladder mounting groove at the top of base, the ladder mounting groove is including sphere mounting groove and the tube-shape mounting groove that from inside to outside set up, and the bulb portion of bulb pole sets up in sphere mounting groove, and pole portion exposes from the ladder mounting groove. The ball head can be tightly attached to the surface of the spherical mounting groove under the action of the magnetic field of the magnet, so that the connection strength of the ball head rod is increased, meanwhile, the base and the ball head rod are utilized to be in spherical contact, so that the angle of the rod part of the ball head rod can be adjusted, the influence of the positioning before welding and the deformation amount generated by welding in the conventional nut welding mode can be reduced, and the welding difficulty is further reduced. On the basis, a pressing sleeve assembly is further arranged on the ball head rod, the inner side edge of the ball head pressing sleeve part of the pressing sleeve assembly is propped against the ball head part, and the outer side of the ball head pressing sleeve part is connected with the cylindrical mounting groove. Under the condition that the rod part of the ball head rod is adjusted, the movement of the ball head part of the ball head rod can be further limited, so that the ball head rod is more firmly connected with other fasteners, and the ball head rod is easy to loosen under the condition of avoiding vibration. Therefore, after the magnetic resonance imaging equipment uses the connecting component with the structure, the welding difficulty is reduced, and measures such as torsion and rotation stopping are not required to be set when other parts are installed, so that the equipment is more convenient to maintain in the later period.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic diagram of a connection assembly for a magnetic resonance imaging apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a connection assembly for a magnetic resonance imaging apparatus according to an embodiment of the present disclosure;

figure 3 is a front view of a connection assembly for a magnetic resonance imaging apparatus provided by an embodiment of the present disclosure;

figure 4 is a top view of a connection assembly for a magnetic resonance imaging apparatus provided by an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of A-A of FIG. 4;

fig. 6 is a bottom view of a connection assembly for a magnetic resonance imaging apparatus provided by an embodiment of the present disclosure.

Reference numerals:

10: a base; 11: a step mounting groove; 111: a spherical mounting groove; 112: a cylindrical mounting groove; 12: a slot;

20: a ball head rod; 21: a ball head portion; 22: a stem portion; 221: a connection hole;

30: a press sleeve assembly; 31: a ball head pressing sleeve part; 32: a knob portion;

40: positioning a nut;

50: a shielding sheet group; 51: a shield insertion portion; 52: a holding part.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in connection with fig. 1, 4 and 5, embodiments of the present disclosure provide a connection assembly for a magnetic resonance imaging apparatus, including a base 10, a ball stud 20 and a press sleeve assembly 30. The base 10 comprises a fixed end and a connecting end, wherein the fixed end is used for being fixed on a magnet of the magnetic resonance imaging equipment, the connecting end is opposite to the fixed end, a step mounting groove 11 is formed in the end face of the connecting end, and in combination with fig. 1, the bottom (fixed end) of the base is used for being fixedly arranged on the magnet of the magnetic resonance imaging equipment, the fixing mode can be welding, the top (connecting end) of the base 10 is provided with the step mounting groove 11, and the step mounting groove 11 comprises a spherical mounting groove 111 and a cylindrical mounting groove 112 which are formed from inside to outside; a head stem 20 comprising a head portion 21 and a stem portion 22; the ball part 21 is arranged in the spherical mounting groove 111 and is attached to the inner surface of the spherical mounting groove 111, and the rod part 22 is exposed from the stepped mounting groove, namely, is positioned at the top of the base 10 and is used for connecting all components; the pressing sleeve assembly 30 is sleeved on the ball head rod 20, and the rod part 22 is exposed from the pressing sleeve assembly 30; the pressing sleeve assembly 30 comprises a ball pressing sleeve part 31, the ball pressing sleeve part 31 is sleeved on the rod part 22, the inner side of the ball pressing sleeve part 31 abuts against the ball head part 21, and the outer side of the ball pressing sleeve part 31 is connected with the cylindrical mounting groove 112.

By adopting the connecting assembly for the magnetic resonance imaging device provided by the embodiment of the disclosure, the base 10 is welded and fixed on the magnet of the magnetic resonance imaging device, the step mounting groove 11 is formed in the end face of the connecting end of the base 10, the step mounting groove 11 comprises the spherical mounting groove 111 and the cylindrical mounting groove 112 which are arranged from inside to outside, the ball head part 21 of the ball head rod 20 is arranged in the spherical mounting groove 111, and the rod part 22 of the ball head rod 20 is exposed out of the step mounting groove 11. The base 10 and the ball head rod 20 are in spherical contact, so that the rod part 21 of the ball head rod 20 can be adjusted in angle, the influence of positioning before welding and deformation generated by welding in a conventional nut welding mode can be reduced, and the welding difficulty is further reduced. On the basis, a pressing sleeve assembly 30 is further arranged on the ball head rod 20, the inner side edge of a ball head pressing sleeve part 31 of the pressing sleeve assembly 30 abuts against the ball head part 21, and the outer side of the ball head pressing sleeve part 31 is connected with a cylindrical mounting groove 112. Under the condition that the rod part of the ball head rod is adjusted, the movement of the ball head part of the ball head rod can be further limited, so that the ball head rod is more firmly connected with other fasteners, and the ball head rod is easy to loosen under the condition of avoiding vibration. Meanwhile, the ball head part is made of ferromagnetic or ferrimagnetic materials, and can be tightly attached to the inner surface of the spherical mounting groove under the action of the magnetic field of the magnet, so that the connection strength of the ball head rod is further increased, and the risk of looseness of the ball head rod caused by vibration of the magnet is reduced.

In an embodiment of the present disclosure, the connection assembly is for being disposed on a magnetic resonance imaging apparatus. The connecting assembly comprises a base 10 fixedly arranged on a magnet of the magnetic resonance imaging device, and an angle-adjustable ball rod 20 is connected to the base 10. Here, in order to enable the base 10 to be firmly fixed to the magnet, the base 10 is welded to the magnet by means of welding. The connection assembly is preloaded onto the magnet. Although the position of the base 10 may be shifted during the welding process, perpendicularity with the reference can be ensured by adjusting the position of the head rod 20. The ball head portion adopts ferromagnetism or ferrimagnetism material to support, can increase the laminating intensity of ball head pole and base under the effect of magnet magnetic field, further prevents the risk that coupling assembling and the part of being connected with coupling assembling become flexible in magnet vibration process.

In the embodiment of the present disclosure, a stepped installation groove 11 is opened at the top of the base 10. As shown in fig. 5, the stepped mounting groove 11 includes a spherical mounting groove 111 and a cylindrical mounting groove 112, wherein the groove diameter of the spherical mounting groove 111 is smaller than the groove diameter of the cylindrical mounting groove 112. In this way, it is ensured that the ball portion 21 of the ball rod 20 can be inserted into the ball mounting groove 111 to form a ball joint. Here, in order to facilitate adjustment of the angle of the shaft portion 22 of the ball head shaft 20, it is necessary to define the ball portion 21 of the ball head shaft 20 in the ball mounting groove 111 and adjust the angle of the shaft portion 22 by rotation.

In the disclosed embodiment, the ball portion 21 of the ball stud 20 is defined within the ball mounting groove 111. Wherein, in order to enable smooth rotation of the ball head 21 of the ball head rod 20 in the spherical mounting groove 111, optionally, in some embodiments, the base 10 is made of a non-magnetic material, and in the non-magnetic state of the magnet, the spherical mounting groove 111 will not generate an adsorption force on the ball head 21 of the ball head rod 20 so as to facilitate rotation of the rod 22 of the head screw 20. Alternatively, the base 10 is made of stainless steel, which has good strength and stainless property, and can ensure stable connection with each component and bear certain pressure strength.

In the above embodiment, in the case where the ball portion 21 of the ball stud 20 is provided in the ball mounting groove 111, the stem portion 22 can be exposed from the step mounting groove 11 and positioned on the top of the base 10 for connecting the components. Here, when the angle of the shaft portion 22 is adjusted, the press sleeve assembly 30 is further provided on the ball stud 20, which prevents the ball portion 21 of the ball stud 20 from rotating in the ball mounting groove 111, thereby changing the angle of the shaft portion 22. Wherein the stem 22 can also be exposed from the press sleeve assembly 30 and provided with corresponding connection structures.

As shown in connection with fig. 4 and 5, in some embodiments, the stem 22 is provided with external threads that may be in an exposed position of the stem; and/or the stem 22 is provided with a connection hole 221, which may be located at an end of the stem. In this way, the connection with other components can be carried out in various ways, and the adaptability is better. Optionally, the exposed portion of the shank 22 is provided with external threads, and the other components are provided with threaded bores through which the other components are coupled to the external threads of the shank 22. Optionally, the end of the rod 22 is provided with a connecting hole 221, and other components are provided with rod-shaped structures, and the other components are connected with the connecting hole 221 through the rod-shaped structures; here, the connection hole 221 may be a screw hole, and a screw thread is provided at an outer side of the rod-shaped structure thereof. Alternatively, the exposed portion of the stem 22 may be threaded on the outside and the end portion may be provided with a connecting hole 221 so that it may be connected to at least two structural members, including a member with a threaded hole, a member with a rod-like structure, etc.

As shown in fig. 1 and 5, in the above embodiment, the pressing sleeve assembly 30 includes a ball pressing sleeve portion 31, the pressing sleeve assembly 30 is sleeved on the ball rod 20, the ball pressing sleeve portion 31 is sleeved on the rod portion 22, the inner side edge of the ball pressing sleeve portion 31 abuts against the ball head portion 21, and the outer side of the ball pressing sleeve portion 31 is connected with the cylindrical mounting groove 112. Thus, the ball portion 21 can be further limited, the turning angle of the lever portion 22 can be prevented from being excessively large, and the perpendicularity of the lever portion 22 can be ensured.

In the embodiment of the disclosure, the inner side edge of the ball pressing sleeve portion 31 is adapted to the outer surface of the ball portion 21, i.e. a corresponding cambered surface is provided, so that the inner side edge of the ball pressing sleeve portion 31 can wrap the outer surface of the ball portion 21, and the ball portion 21 and the ball pressing sleeve portion 31 can be effectively prevented from loosening in the vibration process. Alternatively, the outer side of the ball press sleeve portion 31 may be connected with the cylindrical mounting groove 112 by a screw. Optionally, the ball press sleeve 31 is sleeved on the rod 22, and a space is provided between the ball press sleeve 31 and the rod 22 for fine tuning the angle of the rod 22.

As shown in connection with fig. 1-3, the press sleeve assembly 30 is installed for convenience. In some embodiments, the press sleeve assembly 30 further comprises: the knob part 32 is positioned on the periphery of the ball press sleeve part 31 and used for driving the ball press sleeve part 31 to rotate so as to be fixed and unfixed with the cylindrical mounting groove (112). In the case where the inner side of the ball press sleeve portion 31 presses the ball portion 21, the knob portion 32 is located on the top surface of the base 10.

In the embodiment of the present disclosure, the press sleeve assembly 30 includes a ball press sleeve portion 31 and a knob portion 32, and the ball press sleeve portion 31 and the knob portion 32 constitute a stepped sleeve structure, so that the ball press sleeve portion 31 can be inserted into the cylindrical mounting groove 112 and abutted with the head portion 21. The knob portion 32 is located outside the whole base 10, so that a user can screw the ball press sleeve portion 31 of the press sleeve assembly 30 into the cylindrical mounting groove 112 through the knob portion 32. Alternatively, the knob portion 32 may take the form of a nut.

In the embodiment of the disclosure, in the case that the inner side edge of the ball press sleeve portion 31 abuts against the ball head portion 21, a clearance is provided between the knob portion 32 and the top surface of the base 10, so as to avoid the situation that the knob portion 32 abuts against the top surface of the base 10, but the inner side edge of the ball press sleeve portion 31 does not abut against the ball head portion 21.

In some embodiments, in combination with the illustration of fig. 1 to 5, the connection assembly for a magnetic resonance imaging apparatus further comprises: the positioning nut 40 is connected to the rod portion 22 and is located on a side of the pressing sleeve assembly 30 away from the base 10, for example, the pressing sleeve assembly 30 is above the knob portion 32, and when the positioning nut 40 is screwed in place, the bottom surface of the positioning nut 40 abuts against the upper portion of the knob portion 32. The set nut 40 is used to fix the angle of the stem 22.

In the disclosed embodiment, the positioning nut 40 is located at the upper portion of the press sleeve assembly 30 and is sleeved on the rod portion 22 when the press sleeve assembly 30 is installed. When the positioning nut 40 is used in cooperation, the pressing sleeve assembly 30 can be pre-tightened first, then the positioning nut 40 is installed, the bottom surface of the positioning nut 40 is abutted against the upper portion of the knob portion 32, and the pressing sleeve assembly 30 is screwed again. Thus, to further ensure perpendicularity of the stem 22, the angle of the stem 22 is further defined by the set nut 40.

In some embodiments, as shown in connection with fig. 2 and 5, the abutment surface of the knob portion 32 and the positioning nut 40 includes a curved surface. In this way, the knob portion 32, the positioning nut 40, and the lever portion 22 can be more tightly connected, and loosening of the components due to vibration generated can be avoided.

In the embodiment of the present disclosure, a cambered surface groove of an annular structure is provided at an upper position of the knob portion 32 and located in a circumferential direction of the lever portion 22, and the cambered surface structure is formed by rounding a bottom side edge of the positioning nut 40. In this way, when the positioning nut 40 is mounted on the lever portion 22, the bottom arc surface of the positioning nut 40 abuts against the upper arc surface of the knob portion 32, and thus a curved surface structure connection is formed. Compared with the connection of a planar structure, the anti-vibration effect is better, and each part is prevented from loosening.

In the above embodiment, the perpendicularity of the lever portion 22 meets the set requirement, and the positioning nut 40 may not be used.

In some embodiments, where the magnet has a magnetic force, the magnetic force of the magnet to the ball portion 21 of the ball stud 20 is greater. At this time, it is inconvenient to rotate the shaft portion 22 of the head shaft 20. Therefore, the side of the base 10 is provided with a slot 12, which is closer to the fixed end than the spherical mounting groove 111. Referring to fig. 1, a slot 12 is formed on a bottom side of the base 10, and the slot 12 is located below the spherical mounting groove 111; the connection assembly further includes: the shielding sheet set 50 can be inserted into the slot 12 to isolate the magnetism of the magnet to the region of the spherical mounting groove 111 so as to facilitate the mounting of the ball head rod 20; wherein, when the pressing sleeve assembly 30 presses the ball part 21 and the verticality meets the requirement, the shielding sheet set 50 is pulled away, and the ball rod 20 is attracted by the magnetic force of the magnet.

In the embodiment of the present disclosure, the magnetism of the magnet to the region of the spherical mounting groove 111 can be effectively isolated by the inserted shielding sheet set 50, and thus the ball portion 21 of the ball head rod 20 can be rotated on the magnet having the magnetic force, thereby facilitating the adjustment of the angle of the rod portion 22. The slot 12 is located below the spherical mounting groove 111, and may be used to isolate magnetism, and the position and depth of opening are not limited. Optionally, the slot 12 is an open slot formed from the bottom surface of the base 10.

In the embodiment of the present disclosure, before the base 10 is mounted on the magnet, the slot 12 is formed on the bottom side surface of the base 10, the end surface on the side where the slot 12 is formed is further disposed on the magnet, and then the shielding sheet set 50 is inserted into the mating slot 12, and the ball stud 20 and the press sleeve assembly 30 are sequentially mounted (here, the set nut 40 is selectively used according to the perpendicularity of the stud portion 22). When the perpendicularity of the shaft portion 22 is satisfied, the shielding sheet set 50 is pulled out, and the ball head shaft 20 is attracted by the magnetic force of the magnet, so that the installation of the connection assembly is completed.

As shown in conjunction with fig. 1 and 6, in some embodiments, the shield stack 50 includes a shield insert 51 and a grip 52. Wherein, the shielding insertion part 51 is inserted into the slot 12; the grip 52 is connected to the shield insertion portion 51, and the grip 52 is located outside the chassis 10 when the shield insertion portion 51 is inserted into the slot 12.

In the embodiment of the present disclosure, the insertion portion 51 of the shielding sheet set 50 is inserted into the slot 12 for isolating magnetism, so that the cross section of the insertion portion 51 is matched with the slot surface of the slot 12. The holding portion 52 is connected to the shielding insertion portion 51, and in a case where the shielding insertion portion 51 is inserted into the slot 12, the holding portion 52 is located outside the base 10, so that the user can conveniently remove the shielding sheet set 50, and the holding portion 52 is a handle structure that is convenient for the user to take with hands.

In the disclosed embodiment, the shield stack 50 is a reusable component that can be used on other connection components as well, with one connection component installed. Therefore, the shield blade set 50 can be removed from the slot 12 by the grip portion 52. Here, the shield insertion portion 51 and the grip portion 52 are integrally formed.

In some embodiments, the shield stack 50 is comprised of a plurality of sheet structures of diamagnetic material.

In the embodiment of the present disclosure, by controlling the number of the sheet-like structures in the shield sheet group 50, the magnetic force of the magnet to the ball head 21 can be controlled. Alternatively, the diamagnetic material includes titanium alloy, copper, aluminum, or the like. Here, as the number of the sheet-like structures in the shield sheet group 50 increases, the thickness of the shield sheet group 50 becomes thicker, so that the magnetic force of the magnet gradually weakens the suction of the ball stud 20; as the number of the sheet structures in the shield sheet group 50 decreases, the thickness of the shield sheet group 50 becomes thinner, so that the magnetic force of the magnet gradually increases the suction of the ball stud 20. Accordingly, the shield plate group 50 of different thickness can be selected according to the magnitude of the magnetic force used.

The disclosed embodiments also provide a magnetic resonance imaging apparatus, including the connection assembly for a magnetic resonance imaging apparatus in the foregoing embodiments, wherein the base 10 of the connection assembly is welded to both end faces of the Z axis of the magnet of the magnetic resonance imaging apparatus.

In the embodiments of the present disclosure, the magnetic resonance imaging apparatus includes the connection assembly for a magnetic resonance imaging apparatus described above, and reference is made to the foregoing embodiments, so that the magnetic resonance imaging apparatus has at least the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A connection assembly for a magnetic resonance imaging apparatus, comprising:

the base (10) comprises a fixed end and a connecting end, wherein the fixed end is used for being fixed on a magnet of the magnetic resonance imaging equipment, the connecting end is opposite to the fixed end, a step mounting groove (11) is formed in the end face of the connecting end, and the step mounting groove (11) comprises a spherical mounting groove (111) and a cylindrical mounting groove (112) which are arranged from inside to outside;

a ball head rod (20) comprising a ferromagnetic or ferrimagnetic ball head portion (21) and a rod portion (22); the ball head part (21) is arranged in the spherical mounting groove (111) and is attached to the inner surface of the spherical mounting groove (111), and the rod part (22) is exposed from the step mounting groove (11) and is used for connecting all components;

the pressing sleeve assembly (30) is sleeved on the ball head rod (20), and the rod part (22) is exposed out of the pressing sleeve assembly (30); the pressing sleeve assembly (30) comprises a ball pressing sleeve part (31), the ball pressing sleeve part (31) is sleeved on the rod part (22), the inner side of the ball pressing sleeve part (31) is propped against the ball part (21), and the outer side of the ball pressing sleeve part (31) is connected with the cylindrical mounting groove (112).

2. The connection assembly according to claim 1, wherein the press-fit assembly (30) further comprises:

and the knob part (32) is positioned on the periphery of the ball head pressing sleeve part (31).

3. The connection assembly of claim 2, further comprising:

the positioning nut (40) is sleeved on the rod part (22) and is positioned on one side, far away from the base (10), of the pressing sleeve assembly (30), the positioning nut (40) is abutted to the upper part of the knob part (32), and the positioning nut (40) is used for fixing the angle of the rod part (22).

4. A connection assembly according to claim 3, wherein the abutment surface of the knob portion (32) and the positioning nut (40) comprises a curved surface.

5. -connection assembly according to any one of claims 1 to 4, characterised in that the stem (22) is provided with an external thread; and/or the rod part (22) is provided with a connecting hole (221).

6. -connection assembly according to any one of claims 1 to 4, characterised in that the side of the base (10) is provided with a slot (12), which slot (12) is closer to the fixed end than the spherical mounting slot (111); the connection assembly further includes:

and the shielding sheet group (50) can be inserted into the slot (12) and is used for isolating magnetism of the magnet to the spherical surface mounting groove (111) area so as to facilitate the mounting of the ball head rod (20).

7. The connection assembly according to claim 6, wherein the shielding sheet set (50) comprises:

a shield insertion portion (51) inserted into the slot (12);

and a holding part (52) connected to the shield insertion part (51) and located outside the base (10).

8. The connection assembly according to claim 6, wherein the shielding sheet set (50) consists of a plurality of sheet-like structures of diamagnetic material.

9. A connection assembly according to any one of claims 1 to 4, wherein the base (10) is made of a non-magnetic material.

10. A magnetic resonance imaging apparatus comprising a connection assembly as claimed in any one of claims 1 to 9.