CN213715439U - Coil assembly and magnetic resonance equipment - Google Patents

Abstract

The utility model provides a coil assembly and magnetic resonance equipment. The coil component includes: a tray; a lower coil movably disposed on the tray; the locking mechanism is movably arranged on the lower coil and can lock or unlock the lower coil and the tray; and the upper coil is covered on the lower coil, and the locking and the opening of the upper coil and the lower coil control the triggering of the locking mechanism. The locking mechanism is controlled to be locked and unlocked by the upper coil and the lower coil, the complexity of the structure is reduced, the upper coil is buckled or separated from the lower coil to realize the control of the locking mechanism, the operation is simple, the control of the state of the lower coil and the tray is convenient, the operation efficiency is improved, and the use is convenient.

Description

Coil assembly and magnetic resonance equipment

Technical Field

The utility model relates to a medical imaging equipment technical field especially relates to a coil pack and magnetic resonance equipment.

Background

Some coils on the magnetic resonance, especially joint coils, are placed on a sickbed, so that imaging of a certain position is realized, and the imaging effect is ensured. When the coil is used, the left position and the right position of the coil are required to be adjusted relative to a sickbed, and then the coil is fixed through some locking structures, so that the position is constant and stable during scanning. At present, the conventional design of the locking structure realizes control through external switches such as a button, a handle, a knob and the like. However, the locking structure has a complex structure, is inconvenient to operate, affects the operation efficiency, and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a coil assembly and a magnetic resonance apparatus having simple structure and convenient operation, aiming at the problem of inconvenient operation caused by the complicated structure of the existing locking structure.

The above purpose is realized by the following technical scheme:

a coil assembly comprising:

a tray;

a lower coil movably disposed on the tray;

the locking mechanism comprises a touch part and a locking assembly, wherein the touch part is at least partially exposed out of the lower coil, the touch part is connected with the locking assembly, and the touch part moves relative to the lower coil under the action of external force so as to drive the locking assembly to at least partially extend out of the lower coil and abut against the tray.

In one embodiment, the locking mechanism further comprises a transmission assembly, and the transmission assembly is in transmission connection with the touch piece and the locking assembly.

In one embodiment, the method further comprises the following steps:

the upper coil is detachably connected with the lower coil, when the upper coil is buckled with the lower coil, the upper coil is abutted against the touch piece, and the touch piece drives the locking assembly to lock the lower coil and the tray through the transmission assembly.

In one embodiment, the transmission assembly comprises a connecting rope and a steering wheel, the steering wheel is rotatably arranged on the lower coil, one end of the connecting rope is connected to the touch piece, the other end of the connecting rope is wound on the steering wheel and connected to the locking assembly, and the touch piece drives the locking assembly to move through the connecting rope.

In one embodiment, the locking mechanism further comprises a reset assembly, the reset assembly comprises a reset positioning piece and a reset elastic piece, the reset positioning piece is arranged on the lower coil, the touch piece is movably arranged on the reset positioning piece, and the reset elastic piece is elastically connected with the reset positioning piece and the touch piece.

In one embodiment, the transmission assembly comprises a connecting rod and a rotating part, one end of the connecting rod is rotatably connected with the touch part through the rotating part, the other end of the connecting rod is rotatably connected with the locking assembly through the rotating part, and the touch part drives the locking assembly to move through the connecting rod.

In one embodiment, the transmission assembly comprises a transmission gear, a first rack and a second rack, the first rack is connected with the touch piece and the transmission gear, the second rack is connected with the transmission gear and the locking assembly, and the touch piece drives the locking assembly to move through the first rack, the gear and the second rack.

In one embodiment, the locking assembly comprises a locking pin, a return elastic member and a locking positioning member, the locking pin is connected with the transmission assembly, the locking positioning member is arranged on the lower coil, the locking pin is movably arranged on the locking positioning member, and the return elastic member is elastically connected with the locking positioning member and the locking pin.

In one embodiment, the coil assembly further comprises a guiding mechanism, the guiding mechanism comprises a guiding member, the tray has a sliding groove, one end of the guiding member is fixed to the lower coil, and the other end of the guiding member extends into the sliding groove and can slide along the sliding groove.

A magnetic resonance apparatus comprising an imaging body having a magnet bore and a scan bed, and further comprising a coil assembly, the coil assembly comprising:

a tray;

a lower coil movably disposed on the tray;

an upper coil detachably connected to the lower coil;

the locking mechanism comprises a touch part and a locking assembly, the touch part is at least partially exposed out of the lower coil and is connected with the locking assembly, when the upper coil is buckled with the lower coil, the upper coil is abutted against the touch part, and the touch part moves relative to the lower coil so as to drive the locking assembly to at least partially extend out of the lower coil and abut against the tray; alternatively, the first and second electrodes may be,

the locking mechanism comprises a touch switch, and after the upper coil is buckled with the lower coil, the touch switch is triggered by sensing or electric control to lock the lower coil and the tray.

After the technical scheme is adopted, the utility model discloses following technological effect has at least:

the utility model discloses a coil pack and magnetic resonance equipment, lower coil movable mounting go up the coil lid and locate down on the coil, go up the coil and with the lock of coil down and open the triggering of control locking mechanism, make locking mechanism locking or unblock coil and tray down. After the upper coil is buckled to the lower coil, the upper coil triggers the locking mechanism to move, so that the locking mechanism locks the lower coil and the tray, and the lower coil is fixed; when the upper coil is separated from the lower coil, the locking mechanism is in a free state, the locking mechanism unlocks the lower coil and the tray, and the lower coil can move relative to the tray. The locking mechanism is locked or unlocked by the locking mechanism through the locking and unlocking control locking mechanism of the upper coil and the lower coil, the problem that the structure of the existing locking structure is complex and inconvenient to operate is effectively solved, the complexity of the structure is reduced, the upper coil is locked or separated from the lower coil to realize the control of the locking mechanism, the operation is simple, the control of the state of the lower coil and the tray is facilitated, the operation efficiency is improved, and the use is convenient.

Drawings

Fig. 1 is a schematic diagram of a coil assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of the coil assembly of FIG. 1 with the lower coil mounted to the tray;

FIG. 3 is a schematic view of a first embodiment of a latching mechanism in the lower coil of the coil assembly shown in FIG. 2;

FIG. 4 is a top view of the latching mechanism in the lower coil shown in FIG. 3;

FIG. 5 is a schematic view of the lower coil locking mechanism of FIG. 4 shown in cut-away;

FIG. 6 is a schematic layout view of the trip part of the latch mechanism in the lower coil shown in FIG. 3;

FIG. 7 is a schematic view of a second embodiment of a latching mechanism in the lower coil of the coil assembly shown in FIG. 2;

FIG. 8 is a schematic view of the lower coil locking mechanism of FIG. 7 shown in cut-away;

FIG. 9 is a schematic view of a third embodiment of a latching mechanism in the lower coil of the coil assembly shown in FIG. 2;

FIG. 10 is a schematic view of the lower coil locking mechanism of FIG. 9 shown in cut-away;

FIG. 11 is a schematic view of the latch pin of the latching mechanism of the lower coil of FIG. 2 in contact with the tray;

FIG. 12 is a schematic view of the lower coil of FIG. 2 shown with the guide mechanism attached to the tray from an angle;

FIG. 13 is a schematic view of the lower coil guide mechanism of FIG. 12 from another perspective after attachment to a tray;

fig. 14 is a partially enlarged view of a portion a shown in fig. 13.

Wherein:

100. a coil assembly; 110. a tray; 111. a second mating portion; 120. a lower coil; 121. a lower housing; 122. an antenna carrying assembly; 1221. a cable; 130. a locking mechanism; 131. a touch piece; 132. a transmission assembly; 1321. connecting ropes; 1322. a steering wheel; 1323. a connecting rod; 1324. a rotating member; 132. a first rack; 1326. a second rack; 1327. a transmission gear; 133. a locking assembly; 1331. a locking pin; 13311, a first mating portion; 1332. locking the positioning piece; 1333. a return elastic member; 134. a reset assembly; 1341. Resetting the positioning piece; 1342. a restoring elastic member; 140. an upper coil; 150. a guide mechanism; 151. a guide member; 152. a chute; 200. a scanning bed.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1-3, the present invention provides a coil assembly 100. The coil assembly 100 is applied to a magnetic resonance apparatus for imaging a target region of a detection object to obtain image information of the target region. It should be noted that the target region may be a lesion position, a non-lesion position to be detected, or other positions to be detected. Alternatively, the coil assembly 100 may be a knee joint coil, an ankle joint coil, a head coil, a limb coil or a wrist coil, and the coil structure 100 may be used as a local transmitting coil, a local receiving coil or a local transmitting and receiving integrated coil, in the present invention, the coil assembly 100 is only used as the joint coil for illustration. The utility model discloses a coil pack 100 can remove for scanning bed 200 to adjust coil pack 100 for scanning bed 200's position, satisfy the user demand of different situations.

To ensure the imaging effect of the coil assembly 100, the coil assembly 100 needs to be fixed. At present, the coil is fixed by a locking structure, but the conventional design of the locking structure realizes control by external switches such as a button, a handle, a knob and the like. The locking structure has a complex structure, is inconvenient to operate, influences the operating efficiency and is inconvenient to use. Therefore, the utility model provides a coil pack 100 of simple structure, convenient to operate, this coil pack 100 can be reliably locked when can locking, guarantees coil pack 100 reliable operation to, convenient unblock and regulation operation, convenient to use when adjusting. The specific structure of the coil assembly 100 is described in detail below.

Referring to fig. 1-3, 7 and 9, in one embodiment, the coil assembly 100 includes a tray 110, a lower coil 120, a locking mechanism 130, and an upper coil 140. The lower coil 120 is disposed at the tray 110. The locking mechanism 130 is disposed on the lower coil 120, and the locking mechanism 130 can lock or unlock the lower coil 120 and the tray 110. The upper coil 140 covers the lower coil 120, and the engagement between the upper coil 140 and the lower coil 120 controls the triggering of the locking mechanism 130.

The tray 110 is operative to carry various components of the coil assembly 100 and mount the coil assembly 100 to a couch 200 of the magnetic resonance apparatus. It will be appreciated that the tray 110 is fixedly disposed on the examination table, and that positional adjustment of the coil assembly 100 relative to the scanning bed 200 is achieved by movement or sliding of the lower coil 120 relative to the tray 110. Alternatively, the tray 110 may be fixedly disposed on the scanning bed 200 by screws or other means.

The upper coil 140 is detachably coupled to the lower coil 120. When the coil is used, the upper coil 140 and the lower coil 120 are buckled to form a complete coil body, and at the moment, the upper coil 140 and the lower coil 120 can be matched with each other to emit a local radio frequency field to a target area or receive a magnetic resonance signal generated by proton nuclear spin of the target area. After use, the upper coil 140 is opened, that is, the upper coil 140 is separated from the lower coil 120, and the detachment of the upper coil 140 from the lower coil 120 is completed.

The lower coil 120 is movably disposed on the tray 110, that is, the position of the lower coil 120 on the tray 110 can be adjusted, and then the position of the lower coil 120 on the scanning bed 200 can be adjusted, so that the lower coil 120 can be arranged around the periphery of the target area. Further, a locking mechanism 130 is provided in the lower coil 120, and the lower coil 120 and the tray 110 are locked or unlocked by the locking mechanism 130. When the locking mechanism 130 locks the lower coil 120 and the tray 110, the lower coil 120 cannot move relative to the tray 110, and at this time, the lower coil 120 is fixed and cannot adjust the position of the lower coil 120. When the locking mechanism 130 unlocks the lower coil 120 and the tray 110, the lower coil 120 can move relative to the tray 110, and at the moment, the lower coil 120 is in a free state, and the position can be adjusted relative to the tray 110 so as to accurately correspond to the target position.

It will be appreciated that when the coil assembly 100 is used, there is some misalignment between the lower coil 120 and the target area after the tray 110 is placed on the scanning bed 200. At this time, it is necessary to adjust the position of the lower coil 120, i.e., control the locking mechanism 130 to be unlocked, so as to move the lower coil 120 on the tray 110 such that the lower coil 120 is aligned with the target area. After the lower coil 120 is aligned with the target area, the upper coil 140 is buckled and the locking mechanism 130 is controlled to lock, so that the lower coil 120 is fixed on the tray 110, and the lower coil 120 is prevented from moving. At this time, the coil body surrounded by the upper coil 140 and the lower coil 120 covers the target region, and imaging of the target region is realized.

Specifically, the locking mechanism 130 is disposed in the lower coil 120, and the locking mechanism 130 can perform telescopic movement in the lower coil 120, and when a portion of the locking mechanism 130 extends out of the lower coil 120, an end of the locking mechanism 130 abuts against the tray 110 to lock the lower coil 120 and the tray 110. When the portion of the locking mechanism 130 retracts into the lower coil 120, the end of the locking mechanism 130 disengages from the tray 110, enabling unlocking of the lower coil 120 from the tray 110. Also, the locking mechanism 130 locks or unlocks the lower coil 120 and the tray 110 by the engagement or disengagement control of the upper coil 140 and the lower coil 120. After the upper coil 140 is fastened to the lower coil 120, the upper coil 140 triggers the locking mechanism 130 in the lower coil 120, so that the locking mechanism 130 locks the lower coil 120 and the tray 110. When the upper coil 140 is opened, that is, the upper coil 140 is separated from the lower coil 120, the upper coil 140 cannot trigger the locking mechanism 130, and at this time, the locking mechanism 130 unlocks the tray 110 and the lower coil 120.

In the coil assembly 100 of the above embodiment, the upper coil 140 is engaged with the lower coil 120, the upper coil 140 triggers the locking mechanism 130 to lock the lower coil 120 with the tray 110, the upper coil 140 is separated from the lower coil 120, and the upper coil 140 is separated from the locking mechanism 130 to unlock the lower coil 120 with the tray 110. The locking mechanism 130 is controlled to be buckled and unlocked by the upper coil 140 and the lower coil 120, so that the locking mechanism 130 locks or unlocks the lower coil 120 and the tray 110, the problem of inconvenient operation caused by the complex structure of the existing locking structure is effectively solved, the complexity of the structure is reduced, the locking mechanism 130 is controlled by buckling or separating the upper coil 140 with the lower coil 120, the operation is simple, the control of the states of the lower coil 120 and the tray 110 is facilitated, the operation efficiency is improved, and the use is convenient. Furthermore, the coil assembly 100 controls the state of the locking mechanism 130 by engaging or releasing the upper coil 140, thereby eliminating an external trigger switch.

Referring to fig. 3, 7 and 9, the locking mechanism 130 is optionally a mechanical trigger. At this time, the locking mechanism 130 is exposed to the outside of the lower coil 120, a portion of the locking mechanism 130 exposed from the lower coil 120 may contact the upper coil 140, and the locking mechanism 130 locks the lower coil 120 and the tray 110 by the upper coil 140 touching/abutting against the locking mechanism 130.

Still alternatively, the locking mechanism 130 may be an electrically activated structure. At this time, the locking mechanism 130 locks the lower coil 120 and the tray 110 by electric connection or signal transmission. Two forms of activation for locking mechanism 130 are mentioned below.

Referring to fig. 3, optionally, the lower coil 120 includes a lower housing 121 and an antenna carrier assembly 122. The antenna carrier assembly 122 is used to carry and mount the internal antenna, cable 1221, second connector, etc. The antenna carrier assembly 122 is mated with the upper coil 140 via the top surface such that the first connector of the upper coil 140 is connected (in contacting relation) with the second connector of the lower coil 120, such that the antenna (coil unit) inside the upper coil 140 and the antenna (coil unit) of the lower coil 120 form a complete radio frequency antenna.

The lower housing 121 is used to carry the antenna carrier assembly 122 and the locking mechanism 130, and the upper coil 140 is carried by the antenna carrier assembly 122, so as to carry the whole coil. The lower housing 121 is movably mounted on the tray 110 to enable adjustment of the position of the lower coil 120 relative to the scanning bed 200. Further, the locking mechanism 130 may lock or unlock the lower case 121 and the tray 110 in the lower case 121.

Referring to fig. 2, 3, 7 and 9, an embodiment in which the locking mechanism 130 is a mechanical trigger structure will be described. It should be noted that the locking mechanism 130 can be in contact with any position of the upper coil 140, so as to trigger the locking mechanism 130. In the present invention, the bottom surface of the locking mechanism 130 and the upper coil 140 is only triggered by abutting as an example. At this time, the top of the locking mechanism 130 exposes the top surface of the lower coil 120 to abut the bottom surface of the upper coil 140 for triggering.

Referring to fig. 2, 3, 7 and 9, in an embodiment, the locking mechanism 130 includes a touching member 131, a transmission member 132 and a locking member 133, the touching member partially exposes the lower coil 120 and can be abutted against the upper coil 140, the transmission member 132 is in transmission connection with the touching member 131 and the locking member 133, and the locking member 133 can lock or unlock the lower coil 120 and the tray 110. The upper coil 140 abuts against the trigger 131, and the trigger 131 drives the locking assembly 133 to lock the lower coil 120 and the tray 110 through the transmission assembly 132.

The trigger 131 is a depressible member. The trip 131 is partially disposed inside the lower coil 120 and partially exposed from the top surface of the lower coil 120. Optionally, the trigger 131 is a trigger button. The lower part of the trigger 131 is connected to one end of the transmission assembly 132, and the other end of the transmission assembly 132 is connected to the locking assembly 133. The transmission assembly 132 transmits the movement of the trip member 131 to control the locking assembly 133 to move accordingly.

After the upper coil 140 is fastened to the lower coil 120, the bottom surface of the upper coil 140 abuts against the touch piece 131, and the touch piece 131 is pressed downward, so that the touch piece 131 drives the transmission assembly 132 to move, the transmission assembly 132 drives the locking assembly 133 to move, at this time, the locking assembly 133 extends out of the lower coil 120 and contacts with the tray 110, and the lower coil 120 and the tray 110 are locked. When the upper coil 140 is separated from the lower coil 120, the top of the touching member 131 is no longer pressed, the touching member 131 extends out, the transmission member 132 is linked with the locking member 133, the locking member 133 moves out of the tray 110, and the lower coil 120 retracts to unlock the lower coil 120 and the tray 110.

Referring to fig. 2, 3, 7 and 9, alternatively, the transmission assembly 132 may be a cable pulley spring mechanism, a dual slider link 1323 mechanism, a dual rack and pinion mechanism or other mechanism capable of transmitting the movement of the trigger 131 and the locking assembly 133. Several forms of the transmission assembly 132 are described below.

Referring to fig. 2-6, in a first embodiment of the present invention, the transmission assembly 132 is a rope pulley spring mechanism. The transmission assembly 132 includes a connection rope 1321 and a steering wheel 1322, the steering wheel 1322 is rotatably disposed on the lower coil 120, one end of the connection rope 1321 is connected to the triggering member 131, the other end of the connection rope 1321 is wound around the steering wheel 1322 and connected to the locking assembly 133, and the triggering member 131 drives the locking assembly 133 to move through the connection rope 1321.

The steering wheel 1322 is used to implement a steering arrangement of the connecting rope 1321 such that the connecting rope 1321 is arranged in a preset trajectory. Therefore, occupied space can be reduced, accurate motion transmission is guaranteed, and meanwhile interference between other invisible motion transmission ropes 1321 can be reduced. Alternatively, the connecting rope 1321 may be a rope, a steel wire rope, or another rope capable of achieving connection. The steering wheel 1322 can reduce friction between the connection rope 1321 and the steering wheel 1322, reduce abrasion of the connection rope 1321, and improve operational reliability.

Illustratively, as shown in fig. 4 and 5, the number of the steering wheels 1322 is two, two steering wheels 1322 are located at one side edge inside the lower housing 121 of the lower coil 120, and the locking assembly 133 is located at the other edge of the lower housing 121. That is, the two steering wheels 1322 are disposed at both edges of the lower housing 121 opposite to the locking assembly 133. One of the steering wheels 1322 is disposed below the trip member 131 in the vertical direction, and the other steering wheel 1322 is located in a middle region of the lower housing 121. After the contact member 131 is connected to the connection rope 1321, two steering wheels 1322 are wound around the connection rope, respectively, and are connected to the locking assembly 133. Optionally, the two steering wheels 1322 are in the same horizontal plane. Of course, one of the steerable wheels 1322 could be slightly higher or lower than the other steerable wheel 1322.

Thus, when the trigger 131 receives the abutting force of the upper coil 140, the connecting rope 1321 is in a tightened state, and at this time, the connecting rope 1321 pulls the locking assembly 133, so that the locking assembly 133 retracts into the lower coil 120 to be separated from the tray 110, thereby unlocking the lower coil 120 and the tray 110. When the upper coil 140 is fastened to the lower coil 120, the upper coil 140 applies pressure to the trigger 131, and the connecting rope 1321 is in a loose state, at this time, the connecting rope 1321 no longer pulls the locking component 133, the locking component 133 keeps a state of extending out of the lower coil 120, and the locking component 133 abuts against the tray 110, so that the lower coil 120 and the tray 110 are locked.

In other embodiments of the present invention, there may be one steering wheel 1322. Illustratively, the steering wheel 1322 is disposed below the triggering member 131 in a vertical direction, the steering wheel 1322 is disposed opposite to the locking assembly 133, and the connecting cord 1321 is directly connected to the locking assembly 133 around one of the steering wheels 1322. Of course, the number of steerable wheels 1322 can also be greater.

Alternatively, the number of the transmission assemblies 132 is two, and the two transmission assemblies 132 are symmetrically arranged. Accordingly, the number of the trip members 131 corresponding to the two transmission assemblies 132 is also two. The two touch pieces 131 are respectively connected to the locking assembly 133 through the corresponding transmission assemblies 132, so that the locking assembly 133 can be stressed uniformly, the eccentric falling can be avoided, and the locking and unlocking effects can be guaranteed.

As shown in fig. 4 and 5, one set of the transmission assemblies 132 is disposed at the left side of the lower housing 121, the other set of the transmission assemblies 132 is disposed at the right side of the lower housing 121, and the connection ropes 1321 of the two sets of the transmission assemblies 132 are introduced into the middle region of the lower housing 121 through the corresponding steering wheels 1322 while connecting the locking assemblies 133. When the upper coil 140 is fastened to the lower coil 120, the bottom surface of the upper coil 140 can be connected to the two touching parts 131 at the same time, and then the two touching parts 131 drive the two transmission assemblies 132 to move respectively, so that the locking assembly 133 locks the lower coil 120 and the tray 110. When the upper coil 140 is separated from the lower coil 120, the two triggering members 131 are simultaneously extended, and the locking members 133 are simultaneously driven by the corresponding transmission members 132 to unlock the lower coil 120 and the tray 110, respectively.

As shown in fig. 4 and 5, in an embodiment, the locking mechanism 130 further includes a reset assembly 134, and the reset assembly 134 is disposed on the lower coil 120 for resetting the trigger 131. The touch piece 131 is telescopically arranged in the reset assembly 134, and the reset assembly 134 realizes automatic reset of the touch piece 131. It can be understood that, when the upper coil 140 is fastened to the lower coil 120, the upper coil 140 drives the touch member 131 to overcome the elastic force of the reset component 134 to press the touch member 131 downward; when the upper coil 140 is separated from the lower coil 120, the touch member 131 is no longer subjected to the external force, and at this time, the elastic force of the reset assembly 134 drives the touch member 131 to reset, so that the touch member 131 returns to the free state upward.

Optionally, the number of the reset assemblies 134 is two, and the two reset assemblies 134 correspond to the two contact members 131 and the two transmission assemblies 132, respectively. Still alternatively, as shown in fig. 4 to 6, the number of the touching members 131 is four, the number of the transmission assemblies 132 is two, and the number of the reset assemblies 134 is four, wherein two touching members 131 cooperate with two reset assemblies 134 and two transmission assemblies 132 to drive the movement of the locking assembly 133, and the other two touching members 131 and the other two reset assemblies 134 are symmetrically disposed at the other edge of the lower housing 121. Therefore, when the upper coil 140 is buckled with the lower coil 120, the upper coil 140 is stressed uniformly, and the consistency of connection is ensured.

In an embodiment, the reset assembly 134 includes a reset positioning member 1341 and a reset elastic member 1342, the reset positioning member 1341 is disposed on the lower coil 120, the touch member 131 is movably disposed on the reset positioning member 1341, and the reset elastic member 1342 elastically connects the reset positioning member 1341 and the touch member 131. The reset positioning member 1341 is a mounting component of the reset assembly 134, and the reset positioning member 1341 can support the touching member 131 to prevent the touching member 131 from slipping. Alternatively, the reset locator 1341 is a mounting bracket, the form of which is not limited in principle as long as it can be mounted to the lower housing 121.

The reset positioning member 1341 is fixedly installed on the lower housing 121, and the touch member 131 is telescopically installed on the reset positioning member 1341 through a reset elastic member 1342. Optionally, the return spring 1342 is a spring or other resilient member. The elastic force of the elastic return member 1342 pushes up the trigger 131, so that the trigger 131 extends out of the lower housing 121.

When the upper coil 140 is fastened to the lower coil 120, the bottom surface of the upper coil 140 contacts the touch part 131, and presses the touch part 131 downward against the elastic force of the elastic restoring part 1342. When the trip member 131 is retracted into the lower case 121, the bottom surface of the upper coil 140 is brought into contact with the top surface of the upper coil 140, and the upper coil 140 is mounted in place. When the upper coil 140 is separated from the lower coil 120, the touch member 131 is no longer subjected to the external force, and at this time, the elastic force of the reset elastic member 1342 jacks up the touch member 131, so that the touch member 131 returns to the free state upward, and at this time, the touch member 131 exposes the lower coil 120.

Referring to fig. 3 to 6, in an embodiment, the locking assembly 133 includes a locking pin 1331, a return elastic member 1333 and a locking positioning member 1332, the locking pin 1331 is connected to the transmission assembly 132, the locking positioning member 1332 is disposed on the lower coil 120, the locking pin 1331 is movably disposed on the locking positioning member 1332, and the return elastic member 1333 elastically connects the locking positioning member 1332 and the locking pin 1331. The locking locator 1332 provides a mounting feature for the locking assembly 133 to enable the locking assembly 133 to be mounted in the lower housing 121. Alternatively, the locking positioning member 1332 is a mounting bracket, the form of which is not limited in principle as long as it can be mounted to the lower case 121.

The locking pin 1331 is a body member that achieves locking of the lower coil 120 with the tray 110. The form of the locking pin 1331 is not limited in principle as long as it can be locked. Alternatively, the locking pin 1331 may be cylindrical, sheet-like, strip-like, or other shape, and the like. The locking pin 1331 is telescopically mounted to the locking positioning member 1332 by a return elastic member 1333. Optionally, the return spring 1333 is a spring or other resilient member.

When the locking pin 1331 is not subjected to an external force, or the external force applied to the locking pin 1331 is smaller than the elastic force of the return elastic member 1333, the return elastic member 1333 pushes out the locking pin 1331, so that the locking pin 1331 abuts against the tray 110, and the locking pin 1331 locks the lower coil 120 and the tray 110. When the locking pin 1331 is subjected to an external force greater than the elastic force of the return elastic member 1333, the locking pin 1331 overcomes the elastic force of the return elastic member 1333 by the external force, so that the locking pin 1331 compresses the return elastic member 1333 to retract into the lower case 121, and at this time, the end of the locking pin 1331 is disengaged from the tray 110, thereby unlocking the lower coil 120 from the tray 110.

The operation of the transmission assembly 132 of this embodiment being a rope pulley spring mechanism is: when the upper coil 140 and the lower coil 120 are in a non-fastened state, that is, when the upper coil 140 is separated from the lower coil 120, the triggering member 131 extends out of the lower housing 121 under the elastic force of the elastic restoring member 1342, and assumes a convex state. After the trigger 131 protrudes, the trigger 131 pulls the connecting rope 1321 to make the connecting rope 1321 in a tightened state, and then the connecting rope 1321 pulls the locking pin 1331, so that the locking pin 1331 retracts into the lower housing 121 against the elastic force of the return elastic member 1333, and the locking pin 1331 is separated from the tray 110, thereby unlocking the lower coil 120 and the tray 110. At this time, the lower coil 120 may move with respect to the tray 110, achieving adjustment of the position of the lower coil 120.

After the lower coil 120 is adjusted in position, the upper coil 140 is snapped to the lower coil 120. The bottom surface of the upper coil 140 contacts the trip 131 and presses the trip 131 against the elastic force of the return elastic member 1342, and the trip 131 retracts into the lower case 121. The contact member 131 no longer pulls the connection cord 1321, the external force applied to the connection cord 1321 disappears, and the connection cord 1321 is in a slack state. Further, the external force on the locking pin 1331 disappears, and the locking pin 1331 extends out of the lower case 121 by the return elastic member 1333 and abuts against the tray 110, thereby locking the lower coil 120 and the tray 110.

Referring to fig. 7 and 8, in a second embodiment of the present invention, the transmission assembly 132 is a double-slider linkage. The transmission assembly 132 includes a connecting rod 1323 and a rotating member 1324, one end of the connecting rod 1323 is rotatably connected to the contact member 131 through the rotating member 1324, the other end of the connecting rod 1323 is rotatably connected to the locking assembly 133 through the rotating member 1324, and the contact member 131 drives the locking assembly 133 to move through the connecting rod 1323.

The connecting rod 1323 and the rotating member 1324 realize the transmission of the motion. Alternatively, the rotating element 1324 is a rotating shaft or other element that can effect rotation, such as a hinge or the like. The link 1323 is a swinging member, and the link 1323 is swingably provided in the lower housing 121. The bottom of the connecting rod 1323 contacts the bottom wall of the lower case 121, and the top of the connecting rod 1323 protrudes out of the lower coil 120 through the trigger 131. The trigger 131 is connected to one end of the connecting rod 1323 through a rotating component 1324, and the trigger 131 and the connecting rod 1323 can rotate relatively. The other end of the link 1323 is rotatably connected to a locking pin 1331 of the locking assembly 133 by a rotation member 1324 for relative rotation.

When the upper coil 140 is buckled on the lower coil 120, the bottom surface of the upper coil 140 abuts against the contact member 131, the contact member 131 pushes the link 1323 to swing in the lower housing 121, and the link 1323 pushes the locking assembly 133 to extend out of the lower housing 121, so that the locking assembly 133 abuts against the tray 110, and at this time, the locking assembly 133 locks the lower coil 120 and the tray 110. After the upper coil 140 is separated from the lower coil 120, the elastic force of the locking assembly 133 drives the locking assembly 133 to retract into the lower housing 121, and drives the connecting rod 1323 to swing in the lower housing 121 in the opposite direction, so as to eject the trigger 131 out of the lower coil 120.

In one embodiment, the locking assembly 133 includes a locking pin 1331, a return elastic member 1333 and a locking positioning member 1332, the locking pin 1331 is connected to the transmission assembly 132, the locking positioning member 1332 is disposed on the lower coil 120, the locking pin 1331 is movably disposed on the locking positioning member 1332, and the return elastic member 1333 elastically connects the locking positioning member 1332 and the locking pin 1331. The specific structure of the locking element 133 in this embodiment is completely the same as the structure of the locking element 133 in the first embodiment, except that the force applied to the return elastic member 1333 is different, and the specific structure of the locking element 133 is not described herein again.

In this embodiment, the return elastic 1333 is a stretch elastic. When the locking pin 1331 is not subjected to an external force, or the external force applied to the locking pin 1331 is smaller than the elastic force of the return elastic member 1333, the return elastic member 1333 drives the locking pin 1331 to retract into the lower coil 120, so that the locking pin 1331 is separated from the tray 110, and the lower coil 120 is unlocked from the tray 110. When the external force applied to the locking pin 1331 is greater than the elastic force of the return elastic member 1333, the locking pin 1331 overcomes the elastic force of the return elastic member 1333 under the action of the external force, so that the locking pin 1331 stretches the return elastic member 1333 to extend out of the lower case 121, and at this time, the end of the locking pin 1331 abuts against the tray 110, thereby locking the lower coil 120 and the tray 110.

The working process of the transmission assembly 132 of the present embodiment, which is a double-slider connecting rod 1323 mechanism, is as follows: when the upper coil 140 and the lower coil 120 are in a non-fastened state, that is, when the upper coil 140 is separated from the lower coil 120, the return elastic member 1333 drives the locking pin 1331 to retract into the lower housing 121, and the locking pin 1331 is separated from the tray 110, so as to unlock the lower coil 120 and the tray 110. At this time, the lower coil 120 may move with respect to the tray 110, achieving adjustment of the position of the lower coil 120. Meanwhile, the connecting rod 1323 swings under the elastic force of the return elastic member 1333 to drive the touch member 131 to extend out of the lower housing 121, and thus, the convex state is achieved.

After the lower coil 120 is adjusted in position, the upper coil 140 is snapped to the lower coil 120. The bottom surface of the upper coil 140 contacts the trip 131 and presses down the trip 131, and the trip 131 retracts into the lower case 121. The trigger 131 swings the link 1323 in the lower case 121, and the link 1323 pushes the locking pin 1331 against the elastic force of the return elastic member 1333 to extend out of the lower case 121 and abut against the tray 110, thereby locking the lower coil 120 and the tray 110.

Referring to fig. 9 and 10, in a third embodiment of the present invention, the transmission assembly 132 is a double rack and pinion gear mechanism. The transmission assembly 132 includes a transmission gear 1327, a first rack 1325 and a second rack 1326, the first rack 1325 connects the triggering member 131 and the transmission gear 1327, the second rack 1326 connects the transmission gear 1327 and the locking assembly 133, and the triggering member 131 drives the locking assembly 133 to move through the first rack 1325, the gear and the second rack 1326.

The lower housing 121 has a vertical hole, and the triggering member 131 passes through the hole and can move up and down along the hole. The triggering member 131 is fixedly connected to the first rack 1325, and the transmission gear 1327 is connected to the first rack 1325 and the second rack 1326. The first rack 1325 is disposed perpendicular to the second rack 1326. The first rack 1325 is disposed in a vertical direction, and the second rack 1326 is disposed in a horizontal direction. The first rack 1325, the second rack 1326, and the transmission gear 1327 have the same module and the same width. And, the lower housing 121 has a limit groove, the second rack 1326 is movably disposed in the limit groove, and an end of the second rack 1326 is connected to the locking assembly 133. This may cause the locking assembly 133 to move in a defined direction to lock or unlock the lower coil 120 and the tray 110.

When the upper coil 140 is buckled on the lower coil 120, the bottom surface of the upper coil 140 abuts against the contact member 131, the contact member 131 pushes the first rack 1325 to move downward, and then the first rack 1325 drives the transmission gear 1327 to rotate, and at the same time, the transmission gear 1327 drives the second rack 1326 engaged with the transmission gear 1327 to move, and the locking assembly 133 is pushed to extend out of the lower shell 121, so that the locking assembly 133 abuts against the tray 110, and at this time, the locking assembly 133 locks the lower coil 120 and the tray 110. After the upper coil 140 is separated from the lower coil 120, the elastic force of the locking component 133 drives the locking component 133 to retract into the lower housing 121 and drives the second rack 1326 to move reversely in the lower housing 121, so that the second rack 1326 drives the transmission gear 1327 to rotate, and simultaneously the transmission gear 1327 drives the first rack 1325 engaged with the transmission gear 1327 to move upwards, so as to eject the touch component 131 out of the lower coil 120.

In one embodiment, the locking assembly 133 includes a locking pin 1331, a return elastic member 1333 and a locking positioning member 1332, the locking pin 1331 is connected to the transmission assembly 132, the locking positioning member 1332 is disposed on the lower coil 120, the locking pin 1331 is movably disposed on the locking positioning member 1332, and the return elastic member 1333 elastically connects the locking positioning member 1332 and the locking pin 1331. The specific structure and principle of the locking element 133 in this embodiment are completely the same as those of the locking element 133 in the second embodiment, and are not repeated herein.

The operation of the transmission assembly 132 of the present embodiment as a dual rack gear mechanism is as follows: when the upper coil 140 and the lower coil 120 are in a non-fastened state, that is, when the upper coil 140 is separated from the lower coil 120, the return elastic member 1333 drives the locking pin 1331 to retract into the lower housing 121, and the locking pin 1331 is separated from the tray 110, so as to unlock the lower coil 120 and the tray 110. At this time, the lower coil 120 may move with respect to the tray 110, achieving adjustment of the position of the lower coil 120. Meanwhile, the second rack 1326 moves under the elastic force of the return elastic member 1333, and then the second rack 1326 drives the transmission gear 1327 to rotate, and at the same time, the transmission gear 1327 drives the first rack 1325 engaged with the transmission gear to move upwards, so as to drive the touch member 131 to extend out of the lower housing 121, and thus, the touch member is in a convex state.

After the lower coil 120 is adjusted in position, the upper coil 140 is snapped to the lower coil 120. The bottom surface of the upper coil 140 contacts the trip 131 and presses down the trip 131, and the trip 131 retracts into the lower case 121. The trigger 131 pushes the first rack 1325 to move downward, so that the first rack 1325 drives the transmission gear 1327 to rotate, and meanwhile, the transmission gear 1327 drives the second rack 1326 engaged with the transmission gear 1327 to move, and the locking pin 1331 is pushed to extend out of the lower shell 121, so that the locking pin 1331 abuts against the tray 110, and the lower coil 120 is locked with the tray 110.

Referring to fig. 5, 8, 10 and 11, in an embodiment, the end of the locking pin 1331 has a first fitting portion 13311, and the tray 110 has a second fitting portion 111, and the first fitting portion 13311 is fitted with the second fitting portion 111 to limit the movement of the locking pin 1331. When locked, the first mating portion 13311 is in contact with the second mating portion 111; when unlocked, the first mating portion 13311 is disengaged from the second mating portion 111. After the first engaging portion 13311 engages with the second engaging portion 111, the locking pin 1331 can be reliably contacted with the tray 110, thereby preventing the locking pin 1331 from moving and ensuring reliable locking.

Further, the first fitting portion 13311 is a groove, and the second fitting portion 111 is a tooth portion arranged side by side and fitted with the groove. That is, the first engaging portion 13311 is a V-shaped groove, the second engaging portion 111 is a protruding tooth, and the V-shaped groove is engaged with the tooth and kept in a tightly pressed state by the elastic force of the return elastic member 1333, so that reliable locking is achieved. In another embodiment of the present invention, the first engaging portion 13311 is a tooth portion, and the second engaging portion 111 is a groove. Of course, the first matching portion 13311 and the second matching portion 111 may also be a cylindrical protrusion and a groove, or a protrusion and a groove with other shapes.

Referring to fig. 12 to 14, in an embodiment, the coil assembly 100 further includes a guiding mechanism 150, and the guiding mechanism 150 is configured to guide the lower coil 120 to be connected to the tray 110 for guiding the movement of the lower coil 120 along the tray 110. The guiding mechanism 150 plays a guiding role, so as to ensure that the lower coil 120 moves along the tray 110 along a preset track, avoid the lower coil 120 from deviating from the tray 110, and ensure that the locking mechanism 130 can be reliably locked.

In one embodiment, the guiding mechanism 150 includes a guiding member 151, the tray 110 has a sliding groove 152, one end of the guiding member 151 is fixed to the lower coil 120, and the other end of the guiding member 151 extends into the sliding groove 152 and is slidable along the sliding groove 152. When the lower coil 120 moves relative to the tray 110, the lower coil 120 is guided by the guide 151 to slide along the slide groove 152, thereby preventing the lower coil 120 from moving. Of course, in other embodiments of the present invention, the guiding mechanism 150 may also be a sliding rail and sliding block mechanism or other components capable of achieving linear motion. Alternatively, the guide 151 has a U-shaped cross section, and accordingly, the slide groove 152 has a U-shaped cross section.

In the fourth embodiment of the present invention, the locking mechanism 130 is an electrically controlled triggering mechanism. The locking mechanism 130 includes a touch switch, a first connector and a second connector, the first connector is disposed on the upper coil 140, the second connector is disposed on the lower coil 120, the touch switch is electrically connected to the second connector, and the touch switch locks or unlocks the lower coil 120 and the tray 110. The upper coil 140 is fastened to the lower coil 120 to make the first connector and the second connector conducted, so as to trigger the trigger switch to lock the lower coil 120 and the tray 110.

The first connector and the second connector are triggered or not conducted through current or signal conduction to control the trigger switch to unlock or lock. When the first connector is conducted with the second connector, the trigger switch is triggered to lock the lower coil 120 and the tray 110; when the first connector and the second connector are not connected, the trigger switch is not triggered, and accordingly, the lower coil 120 and the tray 110 cannot be locked by the trigger switch, and at this time, the lower coil 120 and the tray 110 are unlocked.

Moreover, the upper coil 140 is buckled on the lower coil 120, and the first connector is conducted with the second connector; the upper coil 140 is separated from the lower coil 120, and the first connector and the second connector are not conducted. Alternatively, the first connector and the second connector may establish an electrical connection or a signal transmission connection or the like.

Referring to fig. 3, the utility model discloses a coil pack 100 through last coil 140 with lower coil 120's lock with open control locking mechanism 130 for coil 120 and tray 110 under locking mechanism 130 locking or the unblock, effectual structure complicacy of solving present locking structure leads to the inconvenient problem of operation, reduce the complexity of structure, utilize last coil 140 lock or break away from the control that coil 120 realized locking mechanism 130 down, and is easy to operate, be convenient for the control of lower coil 120 and tray 110 state, and the operation efficiency is improved, and convenient to use.

The utility model discloses a fifth embodiment, locking mechanism 130 triggers the structure for the sensing, and locking mechanism 130 can include sensor and touch switch, and the sensor can set up to gravity sensor or pressure sensor, and this sensor can detect the pressure on coil 120 surface down and produce inductive signal, sensor and touch switch electrical connection, and the inductive signal that the sensor produced can be received by touch switch, triggers touch switch locking lower coil 120 and tray 110.

In this embodiment, the lower coil 120 forms a first recess, the upper coil 140 forms a second recess, a pressure sensor is disposed at an upper end of the lower coil 120, when the upper coil 140 is not engaged with the lower coil 120, the pressure sensor does not detect a pressure signal, the touch switch is not operated, and the lower coil 120 and the tray 110 are in an unlocked state, and the lower coil 120 can move relative to the tray 110 under an external force. When the upper coil 140 is fastened to the lower coil 120, the first concave portion and the second concave portion cooperate to form a detection cavity through which a detection portion passes. Meanwhile, the pressure sensor detects a pressure signal, the tact switch receives the pressure signal from the pressure sensor and switches from an inactive state to an active state, and the lower coil 120 and the tray 110 are in a locked state.

The present invention also provides a magnetic resonance apparatus including an imaging body having a magnet bore, a scanning bed 200, and the coil assembly 100 of any of the above embodiments. The coil assembly 100 is mounted on a scanning table 200. as shown in fig. 6, the scanning table 200 can move the coil assembly 100 into and out of the magnet bore of the imaging body. After the coil assembly 100 is adopted in the magnetic resonance apparatus, the position of the coil assembly 100 can be adjusted, so that the coil assembly 100 is conveniently aligned with the target area. Meanwhile, the locking mechanism 130 in the coil assembly 100 has a simple structure, and is easy to perform locking and unlocking operations.

The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A coil assembly, comprising:

a tray;

a lower coil movably disposed on the tray;

the locking mechanism comprises a touch part and a locking assembly, wherein the touch part is at least partially exposed out of the lower coil, the touch part is connected with the locking assembly, and the touch part moves relative to the lower coil under the action of external force so as to drive the locking assembly to at least partially extend out of the lower coil and abut against the tray.

2. The coil assembly of claim 1, wherein the locking mechanism further comprises a transmission assembly drivingly connecting the trip member and the locking assembly.

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

the upper coil is detachably connected with the lower coil, when the upper coil is buckled with the lower coil, the upper coil is abutted against the touch piece, and the touch piece drives the locking assembly to lock the lower coil and the tray through the transmission assembly.

4. The coil assembly of claim 2, wherein the transmission assembly includes a connecting rope and a steering wheel, the steering wheel is rotatably disposed on the lower coil, one end of the connecting rope is connected to the triggering member, the other end of the connecting rope is wound around the steering wheel and connected to the locking assembly, and the triggering member drives the locking assembly to move through the connecting rope.

5. The coil assembly of claim 4, wherein the locking mechanism further comprises a reset assembly, the reset assembly comprises a reset positioning element and a reset elastic element, the reset positioning element is disposed on the lower coil, the touch element is movably disposed on the reset positioning element, and the reset elastic element elastically connects the reset positioning element and the touch element.

6. The coil assembly of claim 2, wherein the transmission assembly comprises a connecting rod and a rotating member, one end of the connecting rod is rotatably connected to the triggering member through the rotating member, the other end of the connecting rod is rotatably connected to the locking assembly through the rotating member, and the triggering member drives the locking assembly to move through the connecting rod.

7. The coil assembly of claim 2, wherein the transmission assembly includes a transmission gear, a first rack and a second rack, the first rack connects the triggering member and the transmission gear, the second rack connects the transmission gear and the locking assembly, and the triggering member drives the locking assembly to move through the first rack, the gear and the second rack.

8. The coil assembly according to any one of claims 2 to 7, wherein the locking assembly includes a locking pin, a return elastic member, and a locking positioning member, the locking pin is connected to the transmission assembly, the locking positioning member is disposed on the lower coil, the locking pin is movably disposed on the locking positioning member, and the return elastic member elastically connects the locking positioning member and the locking pin.

9. The coil assembly according to any one of claims 1 to 7, further comprising a guide mechanism, the guide mechanism comprising a guide member, the tray having a slide slot, one end of the guide member being fixed to the lower coil, and the other end of the guide member extending into and slidable along the slide slot.

10. A magnetic resonance apparatus comprising an imaging body having a magnet bore and a scan bed, further comprising a coil assembly, the coil assembly comprising:

a tray;

a lower coil movably disposed on the tray;

an upper coil detachably connected to the lower coil;

the locking mechanism comprises a touch part and a locking assembly, the touch part is at least partially exposed out of the lower coil and is connected with the locking assembly, when the upper coil is buckled with the lower coil, the upper coil is abutted against the touch part, and the touch part moves relative to the lower coil so as to drive the locking assembly to at least partially extend out of the lower coil and abut against the tray; alternatively, the first and second electrodes may be,

the locking mechanism comprises a touch switch, and after the upper coil is buckled on the lower coil, the touch switch is triggered by sensing or electric control to lock the lower coil and the tray.

Images