CN108013886B

CN108013886B - Mammary machine and grid installation component thereof

Info

Publication number: CN108013886B
Application number: CN201610959867.9A
Authority: CN
Inventors: 孙俊杰; 卢正清
Original assignee: Beijing Neusoft Medical Equipment Co Ltd
Current assignee: Beijing Neusoft Medical Equipment Co Ltd
Priority date: 2016-11-03
Filing date: 2016-11-03
Publication date: 2021-01-12
Anticipated expiration: 2036-11-03
Also published as: CN108013886A

Abstract

The invention provides a mammary machine and a grid mounting assembly thereof, which have the advantages of simple and labor-saving mounting and dismounting steps and good reliability after mounting. The grid assembly comprises a grid assembly and an installation frame arranged on a detector, wherein the grid assembly is provided with an auxiliary pressing piece and a first guide rail extending from back to front, and the installation frame is provided with a second guide rail extending in the same direction as the first guide rail and being in vertical, left and right positioning fit with the first guide rail; the second guide rail is provided with a telescopic piece protruding out of the top surface of the second guide rail, and the first guide rail is provided with a positioning surface and a first inclined surface which is positioned at the rear end of the positioning surface and inclines downwards from back to front; when the first guide rail is connected with the second guide rail backwards, the telescopic piece is pressed down by the first inclined surface and automatically returns to the original position after being installed in place so as to prop against the positioning surface backwards; when the telescopic piece is detached, the auxiliary pressing piece presses the telescopic piece away from the positioning surface and drives the first guide rail to move forwards out of the second guide rail.

Description

Mammary machine and grid installation component thereof

Technical Field

The invention relates to the technical field of a mammary machine system, in particular to a mammary machine and a grid mounting assembly thereof.

Background

In order to filter scattered X-rays so as to improve the image quality, a grid is arranged above an imaging surface of a detector during the shooting of the digital mammary machine, and the rays are filtered; a carbon fiber support plate is required above the grid to support the subject and protect the grid. However, if magnification imaging is performed, the grid needs to be moved away from above the detector imaging plane. That is, the grid of the breast machine needs to meet the requirement of disassembly and assembly.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating an installation structure of a grid in a mammary machine according to a typical prior art.

As shown in fig. 1, in the prior art, the grid can be integrated with a carbon fiber support plate, which is referred to as grid assembly 1 ', and then the grid assembly 1' is externally mounted on the detector 2 ', wherein the grid is located between the carbon fiber support plate and the imaging surface of the detector 2'. When performing magnification photography, the grid assembly 1 'needs to be manually moved away from above the imaging surface of the detector 2'.

When the grid assembly 1 'is installed with the frame 3' of the breast machine, the up-down and left-right displacement of the grid assembly is generally limited by a guide rail, and the front-back displacement of the grid assembly is limited by an installation structure.

Currently, there are mainly mounting structures: the spring steel balls are clamped during installation and are disassembled after overcoming the spring force, but by adopting the structure, a larger locking force is needed for ensuring firm installation, but the disassembly is difficult due to the larger locking force; the hasp is combined through manual operation after the structure reaches the installation position, and is loosened through manual operation during disassembly, but the structure cannot accurately control the locking force and often deforms or loosens due to too much or too little force; the key-free lock is directly pushed in during installation, is clamped, and presses a button during disassembly, so that the buckle springs open, the grid is pulled out, but the clamping position is inaccurate easily, no elastic force is generated, and the grid is easy to shake.

Moreover, no matter which type of mounting structure is adopted, the locking action is required to be executed after the mounting is in place, and the unlocking action is firstly carried out when the mounting is required to be disassembled, so that the operation is complicated.

Therefore, how to design a mammary machine and a grid installation component thereof to improve the operation becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a mammary machine and a grid mounting assembly thereof, which have simple and labor-saving mounting and dismounting steps and good reliability after mounting.

In order to achieve the purpose, the invention provides a grid mounting assembly of a mammary machine, which comprises a grid assembly and a mounting frame arranged on a detector, wherein the grid assembly is provided with an auxiliary pressing piece and a first guide rail extending from back to front, and the mounting frame is provided with a second guide rail extending in the same direction as the first guide rail and being in vertical, left and right positioning fit with the first guide rail; the second guide rail is provided with a telescopic piece protruding out of the top surface of the second guide rail, and the first guide rail is provided with a positioning surface and a first inclined surface which is positioned at the rear end of the positioning surface and inclines downwards from back to front; when the first guide rail is connected with the second guide rail backwards, the telescopic piece is pressed down by the first inclined surface and automatically returns to the original position after being installed in place so as to prop against the positioning surface backwards; when the telescopic piece is detached, the auxiliary pressing piece presses the telescopic piece away from the positioning surface and drives the first guide rail to move forwards out of the second guide rail.

According to the grid mounting assembly, the second guide rail of the mounting frame is provided with the telescopic piece, the first guide rail of the grid assembly is provided with the positioning surface and the first inclined surface, and when the grid mounting assembly is mounted, the first inclined surface of the grid assembly is pressed downwards against the telescopic piece in the process that the first guide rail moves backwards and is connected into the second guide rail, so that the telescopic piece is pressed downwards, the telescopic piece is prevented from influencing the connection of the first guide rail, and the first guide rail is smoothly connected into the second guide rail to complete the mounting of the grid assembly; when the grid assembly is installed in place, the positioning surface moves to a position corresponding to the telescopic piece, and the telescopic piece is released, so that the grid assembly automatically returns and abuts against the positioning surface backwards to prevent the grid assembly from moving out of the second guide rail forwards; when needs are dismantled, at first with supplementary compressing tightly the piece and support downwards and press the extensible member for the extensible member breaks away from the locating surface, prevents that the extensible member from influencing the dismantlement of grid subassembly.

Therefore, the positioning of the grid assembly is naturally carried out along with the installation process of the grid assembly, and besides the installation operation that the first guide rail is connected into the second guide rail backwards, no other operation steps are needed, the operation process is simplified, and the operation convenience is improved; and, when the grid subassembly was dismantled, also the drive direction that shifts out the second guide rail backward with drive grid subassembly was the same, and the contact locking naturally before the dismantlement of drive grid subassembly has improved the convenience of dismantling for installation and dismantlement process homoenergetic are accomplished easily laborsavingly.

Optionally, the auxiliary pressing member is a pressing block connected with a guide part, and the grid assembly is provided with a guide groove which is inclined downwards from back to front and is matched with the guide part; when the telescopic piece is detached, the guide part is driven to move forwards along the guide groove so as to drive the pressing block to press the telescopic piece away from the positioning surface.

Optionally, during installation, the guide portion is driven to move backwards along the guide groove so as to drive the pressing block to move upwards to avoid the telescopic piece.

Optionally, the grid assembly is further provided with an accommodating cavity for accommodating a pressing block, and the pressing block presses the telescopic member away from the positioning surface, so that the front end surface of the pressing block abuts against the front end wall of the accommodating cavity in a front-back manner to drive the first guide rail to move forward;

and/or the pressing block moves upwards to avoid the telescopic piece, and the rear end face of the pressing block is in front-back butt joint with the rear end wall of the accommodating cavity to drive the first guide rail to move backwards.

Optionally, the rear end of the pressing block is further provided with an avoiding part which avoids the telescopic piece during installation.

Optionally, the positioning surface is vertically arranged; or the positioning surface is inclined upwards to be higher than the telescopic piece from back to front, and the inclination angle is not less than thirty degrees so as to prop against the telescopic piece forwards.

Optionally, the front end of the pressing block is provided with a second inclined surface which is inclined upwards from back to front, so that the telescopic piece is pressed away from the positioning surface through the second inclined surface when the telescopic piece moves forwards.

Optionally, the first guide rail is further provided with a first plane for connecting the first inclined plane and the positioning plane, so as to press the telescopic member when the positioning plane does not reach a position corresponding to the telescopic member;

and/or the pressing block is also provided with a second plane used for connecting the second inclined plane and the rear end of the second inclined plane so as to press the telescopic piece.

Optionally, the telescopic part comprises a top block protruding out of the top surface of the second guide rail and an elastic part connected below the top block, and the elastic part can elastically deform in the vertical direction.

Optionally, the telescopic member further comprises an adjusting member, the elastic member is in a pre-compression state, and the adjusting member is used for adjusting the compression amount of the elastic member.

Optionally, a dimension of the top block in the left-right direction is a predetermined value so that the top block can and only can be in contact with the bottom surface of the first guide rail and the bottom surface of the pressing block.

Optionally, the rear end and/or the front end of the top block is provided with a chamfer.

Optionally, the grid assembly further includes a driving part connected to the guide part, and the guide part is disposed on the driving part or the pressing block.

The invention also provides a mammary machine, which comprises a detector for receiving rays and a grid mounting assembly connected with the detector, wherein the grid mounting assembly is the grid mounting assembly.

Drawings

Fig. 1 is a schematic view of an installation structure of a grid in a mammary machine according to a typical prior art;

fig. 2 is a schematic structural diagram of a mounting frame in the grid mounting assembly according to the present invention;

FIG. 3 is a partial cross-sectional view of the mounting frame of FIG. 2;

fig. 4 is a schematic structural view of a grid assembly in a grid mounting assembly according to the present invention;

fig. 5 is a partial schematic structural view of the grid assembly shown in fig. 4 in a bottom view;

fig. 6 is a schematic view of a grid mounting assembly according to the present invention in a first state when mounted;

fig. 7 is a schematic view of a grid mounting assembly according to a second aspect of the present invention in a second state of installation;

fig. 8 is a schematic view of a grid mount assembly according to the present invention in a first state when disassembled;

fig. 9 is a schematic view of a grid mounting assembly according to a second aspect of the present invention in a disassembled state;

fig. 10 is a partial schematic view of the grid assembly of fig. 4 with the second rail in a bottom view;

fig. 11 is a partial side perspective view of the grid assembly of fig. 4 without the auxiliary hold down mounted;

fig. 12 is a schematic side view of a compact in the grid assembly of fig. 4;

fig. 13 is a schematic structural diagram of a driving part in the grid assembly shown in fig. 4;

FIG. 14 is a perspective view of the telescoping member of the mounting frame of FIG. 2;

figure 15 is a cross-sectional view of the telescoping member of figure 14.

In fig. 1:

grid assembly 1 ', detector 2 ', frame 3 ';

in FIGS. 2-15:

grid assembly 1, mounting frame 2, second guide rail 21, connecting piece 22, auxiliary pressing piece 3, guide part 31, pressing piece 32, avoiding part 321, second inclined plane 322, second plane 323, guide groove 4, accommodating cavity 5, first guide rail 6, positioning plane 61, first inclined plane 62, first plane 63, telescopic piece 7, top block 71, elastic piece 72, adjusting piece 73, chamfer part 74, driving part 8 and detector 9.

Detailed Description

The invention provides a mammary machine and a grid mounting assembly thereof, which have the advantages of simple and labor-saving mounting and dismounting steps and good reliability after mounting.

The present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can accurately understand the technical solutions of the present invention.

The terms first, second, etc. described herein are used only for distinguishing different components having the same or similar structures or different structures having the same or similar structures, and do not denote any particular order or importance.

The invention provides a mammary gland machine, which comprises a detector 9 for receiving rays, wherein a grid is required to be arranged above an imaging surface of the detector 9 to filter the rays, the grid and a supporting plate for supporting a subject are combined into a whole, namely a grid assembly 1, and the grid assembly 1 is arranged on the detector 9 and can be detached so as to be detached according to the requirement of photography.

The invention also provides a grid mounting assembly, which comprises a grid assembly 1 and a mounting frame 2 arranged on the detector 9, wherein the grid assembly 1 is detachably connected with the mounting frame 2, so that the grid assembly is connected with and separated from the detector 9.

For convenience of description, the orientation is defined by taking the use state of the mammary machine as a reference, when the mammary machine is normally used, the direction perpendicular to the ground is the up-down direction, the direction pointing to the ground is the down direction, and the direction departing from the ground is the up direction; in a horizontal plane perpendicular to the up-down direction, the direction toward the user is the front, the direction away from the user is the back, and the direction perpendicular to the front and back in the horizontal plane is the left-right direction.

As shown in fig. 2 to 5, in the grid mounting assembly of the present invention, the grid assembly 1 is provided with a first guide rail 6, the mounting frame 2 is provided with a second guide rail 21, both the first guide rail 6 and the second guide rail 21 extend from back to front, and after the first guide rail 6 is connected to the second guide rail 21 from front to back, the grid assembly 1 and the mounting frame 2 can be mounted; second guide rail 21 is equipped with the extensible member 7 of outstanding its top surface, and first guide rail 6 is equipped with locating surface 61 and is in the first inclined plane 62 of this locating surface 61 rear end, and first inclined plane 62 can form with extensible member 7 and support press fit, and locating surface 61 is used for cooperating with extensible member 7, and extensible member 7 can support locating surface 61 backward to realize grid subassembly 1's fixed.

Wherein, first inclined plane 62 is from back to forward downward slope, then when drive first guide rail 6 inserts second guide rail 21 by preceding to back, first guide rail 6 contacts with extensible member 7 with the first inclined plane 62 of its rear end, along with the back-moving of first guide rail 6, the degree that first inclined plane 62 supports downwards and presses extensible member 7 is strengthened, the volume of pushing down of extensible member 7 increases gradually, until pressing the top of extensible member 7 below first guide rail 6 completely for first guide rail 6 can insert second guide rail 21 completely, so that connect grid subassembly 1 and installing frame 2 through first guide rail 6 and second guide rail 21, realize the installation of grid subassembly 1.

After the installation is completed, the first inclined surface 62 moves to the rear of the telescopic member 7, the telescopic member 7 is not pressed any more, the telescopic member 7 has an automatic return function, and is located at a position corresponding to the positioning surface 61 after the installation is completed, so that the telescopic member can move upwards to automatically return, and finally forms a propping fit in the front-back direction with the positioning surface 61, and props against the positioning surface 61 backwards to realize the reliable positioning of the grid assembly 1.

It can be seen that, in the above process, with the access of the first guide rail 6, the extensible member 7 is automatically pressed down to smoothly complete the installation, and after the installation is in place, the extensible member 7 automatically returns due to being released, so as to automatically abut against and match with the positioning surface 61, at this time, the grid assembly 1 limits the forward movement by means of the positioning surface 61 and the extensible member 7, thereby ensuring the positioning reliability after the installation is in place; particularly, in the whole installation and positioning process, other additional operations except installation operation, such as moving out before installation and locking after installation in place, are not needed, the installation procedure is simplified to a greater extent, and the convenience of installation operation is improved.

As shown in fig. 2, a mounting portion of the detector 9 may be further disposed below the mounting frame 2 to implement mounting and positioning of the detector 9, and specifically, the detector 9 may be a flat plate structure.

As shown in fig. 3, the extension member 7 may partially protrude from the top surface of the second rail 21 as long as the height of the extension member protruding upward is lower than the height of the positioning surface 61 in the vertical direction.

The first guide rail 6 may further have a groove for accommodating the extensible member 7, and the positioning surface 61 may serve as a rear end wall of the groove, and the groove has a certain depth in the up-down direction, so that the extended portion of the extensible member 7 can be embedded into the groove and forms abutting engagement with the positioning surface 61.

As shown in fig. 4, the grid assembly 1 may be further provided with a driving part 8, through which driving force is transmitted by the driving part 8 to drive the first guide rail 6 to move in the front-rear direction. The driving part 8 can be a driving handle or a driving block, etc. to be driven manually; the driving part 8 can also be in the structural form of a driving rod and the like, and then is connected with a driving motor and other power sources to realize automatic driving.

As shown in fig. 5, the grid assembly 1 of the present invention may further include an auxiliary pressing member 3, and when the grid assembly is disassembled, the auxiliary pressing member 3 may press the telescopic member 7 downward, so that the telescopic member 7 is pressed away from the positioning surface 61, and the grid assembly 1 is unlocked; then, the auxiliary pressing member 3 is continuously driven, and the first guide rail 6 is driven by the auxiliary pressing member 3 to move forward, so as to move out of the second guide rail 21, thereby completing the detachment of the grid assembly 1.

The structure of the grid mounting assembly and the mounting and dismounting process will be described in detail below with reference to fig. 6-9.

As shown in fig. 5, the auxiliary pressing member 3 may be a pressing block 32, the pressing block 32 is connected to a guide portion 31, the guide portion 31 may be disposed on the pressing block 32, or may be disposed on the driving portion 8, and fig. 5 illustrates the case of being disposed on the driving portion 8; grid assembly 1 may be provided with guide grooves 4 sloping downwards from back to front, which guide grooves 4 cooperate with guides 31, which guides 31 are able to extend into guide grooves 4 and are able to move along guide grooves 4.

As shown in fig. 6, when the installation is performed, the guide portion 31 is driven backward so that the guide portion 31 moves backward along the guide groove 4, and since the guide groove 4 is inclined upward from front to back, the guide portion 31 moves backward and upward along the guide groove 4 to drive the pressing piece 32 to move upward and avoid the extensible member 7 protruding from the top surface of the second guide rail 21.

When the first guide rail 6 moves backwards, the first inclined surface 62 at the rear end of the first guide rail is firstly contacted with the telescopic part 7, the first inclined surface 62 inclines downwards from back to front, and along with the backward movement of the first guide rail 6, the first inclined surface 62 gradually presses the telescopic part 7 downwards until the telescopic part 7 is completely pressed below the first guide rail 6, so that the first guide rail 6 can smoothly move backwards to be connected into the second guide rail 21.

As shown in fig. 7, the positioning surface 61 is inclined upward from back to front to be higher than the telescopic member 7 by an angle not less than 30 degrees, for example, 60 degrees; when the first guide rail 6 is completely connected to the second guide rail 21 and the installation is completed, the first guide rail 6 moves to a position where the positioning surface 61 corresponds to the telescopic part 7 of the second guide rail 21, and the telescopic part 7 automatically returns to be embedded into the groove and is abutted against the positioning surface 61 backwards; since the positioning surface 61 is tilted forward by a relatively large angle, the telescopic member 7 exerts a backward abutting force on the positioning surface 61 and cannot be easily pressed out of the groove by the positioning surface 61, thereby preventing the grid assembly 1 from moving forward out of the second guide rail 21.

Alternatively, the positioning surface 61 may be substantially vertical, and the rear end surface of the extensible member 7 and the positioning surface 61 may form a front-rear barrier, thereby preventing the extensible member 7 from affecting the front-rear positioning.

As shown in fig. 8, during detachment, a forward driving force is applied to the guide portion 31 to drive the guide portion 31 to move forward along the guide groove 4, and since the guide groove 4 inclines downward from back to front, there is a downward partial movement during the forward movement of the guide portion 31 along the guide groove 4, and this downward partial movement drives the pressing block 32 to press the telescopic member 7 downward, so as to press the telescopic member 7 away from the positioning surface 61.

As shown in fig. 9, when the first rail 6 moves forward to make the telescopic member 7 separate from the pressing of the pressing block 32, the first inclined surface 62 can correspond to the telescopic member 7, and further the telescopic member 7 is gradually released through the first inclined surface 62 along with the forward movement of the first rail 6, so that the telescopic member 7 automatically returns. Because extensible member 7 is in the compression state just before contacting with first inclined plane 62, and first inclined plane 62 is by preceding to backward tilt up, when first inclined plane 62 contacts with extensible member 7, can not receive the hindrance of extensible member 7 to can release extensible member 7 gradually along with the antedisplacement of first guide rail 6, realize shifting out smoothly of first guide rail 6, finally accomplish the dismantlement of grid subassembly 1.

It is thus clear that through the setting of supplementary piece 3 that compresses tightly, can control the dismouting of grid subassembly 1 effectively, can also realize supporting of extensible member 7 automatically at the in-process of dismouting and press and release to fix a position or remove the location and dismantle through extensible member 7 as required, make the dismouting process more simple convenient, need not extra locking and unblock step.

The structure of the auxiliary pressing member 3 will be described in detail below with reference to fig. 10 to 13.

As shown in fig. 10, in conjunction with fig. 4 and 5, grid assembly 1 is further provided with a holding cavity 5 for holding pressing block 32, size of holding cavity 5 in front and back direction is larger than pressing block 32, pressing block 32 can move back and forth in holding cavity 5 when guide portion 31 moves along guide groove 4; when the guide part 31 moves to the foremost end of the guide groove 4, namely the press block 32 presses the telescopic piece 7 away from the positioning surface 61, the front end surface of the press block 32 is abutted against the front end wall of the accommodating cavity 5, the guide part 31 is continuously driven forwards, so that the press block 32 can be abutted against the grid assembly 1 forwards by the front end surface thereof, and further, the press block and the guide groove 4 provide driving force for detaching the grid assembly 1; in a similar manner, when guide part 31 moves to the rearmost end of guide way 4, press block 32 moves up and avoids behind extensible member 7 promptly, the rear end face of press block 32 and the rear end wall butt that holds chamber 5, and then can transmit drive power to grid assembly 1 through press block 32, provide the drive power of grid assembly 1 installation.

On the basis, the first guide rail 6 can be further provided with a first plane 63, the first plane 63 is used for connecting the first inclined surface 62 and the positioning surface 61 and is located between the first inclined surface 62 and the positioning surface 61, during installation, after the extensible member 7 is pressed down by the first inclined surface 62, when the positioning surface 61 does not reach the position corresponding to the extensible member 7, the first plane 63 downwards supports and presses the extensible member 7 until the extensible member 7 moves to the position corresponding to the positioning surface 61, and smooth installation is guaranteed.

As can be seen from fig. 10 and 11, if the width of the first inclined surface 62 is denoted as W1, the width of the pressing block 32 is denoted as W2, and W2 should be included in W1, that is, W2 completely coincides with a portion of W1, and the portion where the telescopic member 7 coincides with W1 is denoted as W3 (the non-coinciding portion does not interfere with any structure during the whole installation and disassembly process, i.e., theoretically, the telescopic member 7 extends to the inner side of the guide rail and does not affect the assembly and disassembly, and the non-coinciding portion does not function with W1), then W3 < W1, W3 > (W1-W2) should be provided to ensure that the telescopic member 7 is pressed down and does not block the grid backward when the telescopic member 7 does not contact with the first inclined surface 62; when disassembled, press 32 contacts telescoping member 7 and depresses telescoping member 7 without obstructing the grid forward.

That is, the dimension of the portion of telescopic member 7 extending beyond the top surface of second rail 21 in the left-right direction should be set to a predetermined value, which ensures that telescopic member 7 can contact with only the top surface of first rail 6 and the top surface of pressing block 32 during the mounting and dismounting of grid assembly 1, and avoids affecting the mounting and dismounting of first rail 6 due to the dimension of telescopic member 7 in the left-right direction.

As shown in fig. 12, the rear end of the pressing block 32 may further be provided with an escape portion 321, specifically, a chamfered surface or the like, so as to avoid the expansion piece 7 during installation.

The front end of the pressing block 32 may be provided with a second inclined surface 322 inclined downward from front to back, and when the guide portion 31 moves forward along the guide groove 4, the pressing block 32 is driven to move forward, so that the pressing block 32 gradually presses down the telescopic member 7 with the second inclined surface 322 in the process of moving forward, and finally presses the telescopic member 7 away from the positioning surface 61.

A second plane 323 may also be provided between the second inclined surface 322 of the pressing block 32 and the rear end structure (e.g., the escape portion 321), so that the front and rear end structures of the pressing block 32 are connected by the second plane 323. When second inclined surface 322 presses telescopic element 7 away from positioning surface 61, second flat surface 323 comes into flat contact with the top surface of second rail 21, and pressing of telescopic element 7 via second flat surface 323 may continue, causing first rail 6 to move further forward out of second rail 21.

As shown in fig. 13, the guiding portion 31 may be specifically a guiding block, and may be further connected to the driving portion 8, and as described above, the driving portion 8 may be specifically a driving block to act on the driving portion 8 to drive the guiding portion 31, the pressing block 32, and the grid assembly 1.

In a specific arrangement mode, the telescopic member 7 may include a top block 71 protruding the top surface of the second rail 21 and an elastic member 72 connected below the top block 71, and the elastic member 72 may be elastically deformed in the up-down direction to drive the top block 71 to extend and retract in the up-down direction.

As shown in fig. 14 and 15, the telescopic member 7 may further include an adjusting member 73, the elastic member 72 may be in a pre-compressed state, and the adjusting member 73 may be used to adjust the compression amount of the elastic member 72.

The elastic member 72 can be compressed between the top block 71 and the adjusting member 73, the adjusting member 73 adopts an adjustable installation mode, and the compression amount of the elastic member 72 is adjusted by changing the distance between the adjusting member 73 and the top block 71, so that the telescopic member 7 has different telescopic capacities.

The adjusting member 73 may be an adjusting knob cover, and the elastic member 72 may be a spring, so that the adjusting knob cover may adopt a structural form similar to a spring seat; meanwhile, the lower end of the top block 71 may be provided in a sleeve-like structure to receive the elastic member 72 and to achieve connection with the elastic member 72. By rotating the adjusting knob cover, the pitch of the spring can be changed, the compression amount of the elastic member 72 in the up-down direction can be adjusted, and the elastic force of the elastic member 72 can be adjusted.

In addition, the front end of the top block 71 can be provided with a chamfered part 74, and the rear end can also be provided with a chamfered part 74, so that when the first guide rail 6 is pressed against the top block 71 by the first inclined surface 62, the first guide rail is contacted with the chamfered part 74 at the front end of the top block 71, the contact is relatively gentle due to the arrangement of the chamfered part 74, and the friction force is reduced; when the pressing block 32 is pressed against the top block 71 by the second inclined surface 322, the pressing block contacts with the chamfered part 74 at the rear end of the top block 71, and the function of reducing friction is also achieved.

The chamfered portion 74 may be specifically in the front-rear direction so as to correspond to the mounting and dismounting direction of the first rail 6.

It should be noted that the first inclined surface 62 and the second inclined surface 322 are both provided as inclined surfaces with a small angle, for example, the inclined directions of the first inclined surface 62 and the second inclined surface 322 are opposite, the first inclined surface 62 is inclined downward from back to front, the second inclined surface 322 is inclined upward from back to front, both the inclined angles are smaller than 10 degrees, for example, the inclined angle of the first inclined surface 62 is 6 degrees, and the inclined angle of the second inclined surface 322 is 4 degrees.

When the first inclined surface 62 and the second inclined surface 322 both adopt small-angle inclined surfaces, even if the top block 71 is not fully pressed down, the component force of the blocking force of the top block 71 on the first inclined surface 62 and the second inclined surface 322 in the front-back direction is small, so that the resistance to be overcome when the first guide rail 6 is driven to be connected in and out is small, and accordingly, the driving force required for installing and disassembling the grid assembly 1 is small, and time and labor are saved.

In addition, the inclination angle of the guide groove 4 should not be too large, and may be smaller than 20 degrees, specifically, an inclination angle of 10 degrees may be adopted, so that the movement of the pressing block 32 is more stable, and the pressing block 32 is prevented from generating large displacement in the up-down direction.

Assuming that 50N of force is required to press down the top block 71, the inclination angle of the first inclined surface 62 is 6 degrees, the inclination angle of the second inclined surface 322 is 4 degrees, the inclination angle of the guide groove 4 is 10 degrees, and the inclination angle of the positioning surface 61 is 60 degrees, in the case where friction force is not considered, the force pushing the grid assembly 1 backward at the time of mounting is only 5.3N, the force pressing the grid assembly 1 backward at the time of positioning is 86.6N, and the force pulling the grid assembly 1 forward at the time of dismounting is 12.5N, which not only improves the positioning force, but also reduces the driving force required for mounting and dismounting.

It should be noted that, the surfaces playing a role in positioning, such as the first inclined surface 62, the positioning surface 61, and the second inclined surface 322, may be set as a plane or a curved surface, as long as the slope at each position is set as required, for example, the first inclined surface 62 and the second inclined surface 322 both adopt a smaller slope, and the positioning surface 61 adopts a larger slope.

The mammary machine of the present invention has only been described with reference to the grid mounting assembly, and the rest of the description is omitted herein for reference to the prior art.

The mammary machine and the grid mounting assembly thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A grid mounting assembly of a mammary machine comprises a grid assembly (1) and a mounting frame (2) arranged on a detector, and is characterized in that the grid assembly (1) is provided with an auxiliary pressing piece (3) and a first guide rail (6) extending from back to front, and the mounting frame (2) is provided with a second guide rail (21) which extends in the same direction as the first guide rail (6) and is in vertical, left and right positioning fit with the first guide rail (6); the second guide rail (21) is provided with a telescopic piece (7) protruding out of the top surface of the second guide rail, and the first guide rail (6) is provided with a positioning surface (61) and a first inclined surface (62) which is positioned at the rear end of the positioning surface (61) and inclines downwards from the rear to the front; when the first guide rail (6) is connected into the second guide rail (21) backwards, the telescopic piece (7) is pressed down by the first inclined surface (62), and automatically returns to the original position after being installed in place and is propped against the positioning surface (61) backwards; when the device is disassembled, the auxiliary pressing piece (3) presses the telescopic piece (7) away from the positioning surface (61) and drives the first guide rail (6) to move forwards out of the second guide rail (21).

2. Grid mounting assembly according to claim 1, characterized in that the auxiliary pressing member (3) is a pressing block (32) to which a guide (31) is connected, and the grid assembly (1) is provided with a guide groove (4) which is inclined downward from the rear to the front and which cooperates with the guide (31); when the telescopic part is detached, the guide part (31) is driven to move forwards along the guide groove (4) so as to drive the pressing block (32) to press the telescopic part (7) away from the positioning surface (61).

3. Grid mounting assembly according to claim 2, wherein the guide (31) is driven to move back along the guide groove (4) during mounting to bring the press block (32) up to avoid the telescopic member (7).

4. Grid mounting assembly according to claim 3, wherein the grid assembly (1) is further provided with a receiving cavity (5) for receiving the pressing block (32), and the pressing block (32) presses the telescopic member (7) away from the positioning surface (61) and abuts with the front end surface thereof against the front end wall of the receiving cavity (5) in a front-back manner so as to drive the first guide rail (6) to move forward;

and/or the pressing block (32) moves upwards to avoid the telescopic piece (7) and then is in front-back butt joint with the rear end wall of the accommodating cavity (5) through the rear end surface of the pressing block so as to drive the first guide rail (6) to move backwards.

5. Grid mounting assembly according to claim 3, characterized in that the rear end of the press block (32) is further provided with a relief (321) that avoids the telescopic member (7) when mounted.

6. Grid mounting assembly according to claim 1, wherein the positioning face (61) is arranged vertically; or the positioning surface (61) is inclined upwards to be higher than the telescopic piece (7) from back to front, and the inclination angle is not less than thirty degrees so as to prop against the telescopic piece (7) forwards.

7. Grid mounting assembly according to any of claims 2-5, characterized in that the front end of the press block (32) is provided with a second bevel (322) that is inclined upwards from back to front, so that the telescopic member (7) is pressed away from the positioning surface (61) by the second bevel (322) when moving forward.

8. Grid mounting assembly according to claim 7, wherein the first guide rail (6) is further provided with a first flat surface (63) for connecting the first inclined surface (62) with the positioning surface (61) for pressing against the telescopic member (7) when the positioning surface (61) does not reach a position corresponding to the telescopic member (7);

and/or the pressing block (32) is also provided with a second plane (323) used for connecting the second inclined plane (322) and the rear end thereof so as to press the telescopic piece (7).

9. Grid mounting assembly according to claim 7, wherein the telescopic member (7) comprises a top block (71) protruding the top surface of the second rail (21) and an elastic member (72) connected below the top block (71), the elastic member (72) being elastically deformable in the up-down direction.

10. Grid mounting assembly according to claim 9, wherein the telescopic members (7) further comprise an adjustment member (73), the elastic member (72) being in a pre-compressed state, the adjustment member (73) being adapted to adjust the amount of compression of the elastic member (72).

11. Grid mounting assembly according to claim 9, characterized in that the dimension of the top block (71) in the left-right direction is a predetermined value, so that the top block (71) can and only can be in contact with the bottom surface of the first rail (6) and the bottom surface of the pressing block (32).

12. Grid mounting assembly according to claim 9, characterized in that the back and/or front end of the top block (71) is provided with a chamfered portion (74).

13. Grid mounting assembly according to claim 7, characterized in that the grid assembly (1) further comprises a drive part (8) connected to the guide part (31), the guide part (31) being provided at the drive part (8) or at the press block (32).

14. A breast machine comprising a detector for receiving radiation and a grid mounting assembly connected to the detector, wherein the grid mounting assembly is a grid mounting assembly according to any one of claims 1 to 13.