CN114760798A

CN114760798A - Self-locking push-out assembly, self-locking push-out mechanism and medical equipment

Info

Publication number: CN114760798A
Application number: CN202210366658.9A
Authority: CN
Inventors: 赵桂林; 聂世江
Original assignee: Shenzhen Comen Medical Instruments Co Ltd
Current assignee: Shenzhen Comen Medical Instruments Co Ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-07-15

Abstract

The invention provides a self-locking pushing assembly, a self-locking pushing mechanism and medical equipment. The self-locking push-out assembly comprises a fixed seat, a sliding block, a locking plate and an eccentric wheel; the sliding block is in sliding fit with the fixed seat; the locking plate is rotatably connected with the sliding block and movably connected with the fixed seat; the eccentric wheel is connected with the fixing base rotation, and the eccentric wheel is used for driving the slider and removes for the fixing base to drive the jam plate and together remove, and the fixing base can order about the jam plate for the rotatory unblock of slider. In the subassembly is released in auto-lock of this embodiment, through the cooperation that sets up slider, fixing base and jam plate, compare in traditional link gear, just can realize unblock (locking) and release two functions simultaneously through a part of jam plate, compact structure, functional good.

Description

Self-locking push-out assembly, self-locking push-out mechanism and medical equipment

Technical Field

The invention relates to the technical field of machine manufacturing, in particular to a self-locking pushing assembly, a self-locking pushing mechanism and medical equipment.

Background

In medical equipment such as an infusion information acquisition system and the like in the market at present, a self-locking device and a push-out device are usually arranged in the medical equipment to realize two functions of locking and pushing out, and because two sets of different mechanisms are arranged in the medical equipment, more equipment parts are caused, and the whole mechanism is more complex.

Therefore, there is a need for improvement in view of the above problems to change the present situation.

Disclosure of Invention

The invention provides a self-locking pushing assembly, a self-locking pushing mechanism and medical equipment, which are used for solving the problem that a self-locking device and a pushing device are required to be arranged independently in the traditional medical equipment.

The invention provides a self-locking push-out assembly, which comprises:

a fixed seat;

the sliding block is in sliding fit with the fixed seat;

the locking plate is rotationally connected with the sliding block and movably connected with the fixed seat; and

the eccentric wheel is used for driving the sliding block to move relative to the fixed seat and driving the locking plate to move together, and the fixed seat can drive the locking plate to unlock in a rotating mode relative to the sliding block.

According to one embodiment of the invention, the fixed seat comprises a seat body and a guide convex part convexly arranged on the seat body, the slide block is in sliding fit with the seat body, and the eccentric wheel is rotatably connected with the seat body; the lock plate comprises a plate body and a lock catch portion which are connected, the lock catch portion is used for being clamped and locked with an external component, the plate body is rotatably connected with the sliding block, a guide groove in sliding fit with the guide convex portion is formed in the plate body, and the extending direction of the guide groove is at least partially not parallel to the moving direction of the sliding block.

According to one embodiment of the invention, the plate body is provided with a connecting hole and a mounting hole, the mounting hole is communicated with the connecting hole, and the width of the mounting hole is smaller than the diameter of the connecting hole; the sliding block is provided with a connecting pin shaft and a mounting convex part, the mounting convex part is convexly arranged on the outer wall of the connecting pin shaft, and the connecting pin shaft is used for being rotationally connected with the connecting hole; when the lock plate is rotated to an installation position, the installation convex part corresponds to the installation hole.

According to one embodiment of the invention, one side of the eccentric wheel facing the sliding block is provided with an eccentric guide groove, the sliding block comprises a sliding block body and a driving shaft which is convexly arranged on one side of the sliding block body facing the eccentric wheel, and the driving shaft is in sliding fit with the eccentric guide groove.

According to one embodiment of the invention, the eccentric wheel comprises a connecting shaft part which is rotatably connected with the fixed seat, the slider body is provided with an avoidance groove, and the connecting shaft part is arranged in the avoidance groove in a penetrating way and is connected with the fixed seat; when the slider moves relative to the fixed seat, at least part of the connecting shaft part is arranged at intervals with the inner wall of the avoiding groove.

According to an embodiment of the invention, the self-locking pushing-out assembly further comprises a resetting member, and the resetting member is respectively connected to the eccentric wheel and the fixed seat and is used for driving the eccentric wheel to rotate and reset.

According to one embodiment of the invention, the fixing seat is provided with an accommodating groove, and the sliding block is movably accommodated in the accommodating groove.

According to one embodiment of the invention, the fixed seat is further provided with a sliding part, and the sliding block is provided with a sliding groove in sliding fit with the sliding part.

According to one embodiment of the invention, a connecting part is convexly arranged on one side, away from the sliding block, of the eccentric wheel, the self-locking push-out assembly further comprises a knob, a connecting clamping groove is formed in the knob, and the knob is in clamping fit with the connecting part through the connecting clamping groove.

The invention also provides a self-locking ejecting mechanism, comprising:

a plurality of sets of self-locking ejection assemblies as described above; and

and the connecting rods penetrate through the multiple groups of fixing seats of the self-locking pushing assemblies, are connected with the multiple groups of eccentric wheels of the self-locking pushing assemblies and are coaxially arranged.

According to an embodiment of the invention, when the self-locking push-out assembly comprises a reset piece, the reset piece is a torsion spring, and two movable ends of the reset piece are respectively connected to the connecting rod and the fixed seat and are used for driving the connecting rod to rotate and reset.

According to one embodiment of the invention, the connecting rod comprises a shaft body and a hook part, the hook part is detachably connected to the shaft body, at least part of the hook part extends outwards from the shaft body, and one end, away from the fixed seat, of the resetting piece is connected to the hook part.

The invention also provides medical equipment comprising the self-locking pushing assembly or the self-locking pushing mechanism.

The embodiment of the invention has the following beneficial effects:

when the self-locking push-out assembly of the embodiment is used, the rotating eccentric wheel drives the sliding block to move, when the sliding block moves, the locking plate can be driven to move and rotate under the driving action of the fixing seat, the unlocking function can be realized in the rotating process of the locking plate, the locking plate continues to move after the locking plate is unlocked, the push-out function can be realized, and the locking plate can be driven to rotate reversely to realize the locking function by reversely rotating the eccentric wheel.

In the self-locking push-out assembly of the embodiment, through the matching of the sliding block, the fixing seat and the locking plate, compared with a traditional linkage mechanism, the self-locking push-out assembly can realize two functions of unlocking (locking) and pushing out simultaneously only through one part of the locking plate, and is compact in structure and good in functionality.

In the self-locking push-out mechanism of the embodiment, by arranging the self-locking push-out assemblies in any one embodiment, two groups of self-locking push-out assemblies can be driven to move through one-time rotation, so that unlocking (locking) and pushing-out of a plurality of parts can be realized, the structure is compact, and the using effect is good.

In the medical device of this embodiment, by using the self-locking ejector assembly or the self-locking ejector assembly in any of the above embodiments, compared with the conventional medical device, the medical device can have a more compact structure on the premise of realizing two functions of unlocking (locking) and ejecting only by using one part of the locking plate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a perspective view of a self-locking ejection mechanism in an embodiment of the present invention;

FIG. 2 is a perspective view of a self-locking ejector mechanism in an embodiment of the present invention;

FIG. 3 is a perspective view of a self-locking ejector assembly in an embodiment of the present invention;

FIG. 4 is a schematic view of a slider and eccentric combined according to an embodiment of the present invention;

FIG. 5 is a top view of a self-locking ejector assembly in a locked state in an embodiment of the invention;

FIG. 6 is a top view of a self-locking ejector assembly in an unlocked state in an embodiment of the present invention;

FIG. 7 is an exploded view of a self-locking ejector mechanism in an embodiment of the invention;

FIG. 8 is an enlarged view of detail A of FIG. 7;

FIG. 9 is an enlarged view of detail B of FIG. 7;

FIG. 10 is a perspective view of a medical device in an embodiment of the present invention;

reference numerals:

1. a self-locking push-out mechanism; 2. fixing the machine body; 3. movable machine body

10. A self-locking push-out assembly;

100. a fixed seat; 110. a base body; 111. accommodating grooves; 120. a guide projection; 130. a sliding part;

200. a slider; 210. a slider body; 211. a chute; 212. an avoidance groove; 220. a drive shaft; 230. connecting a pin shaft; 240. a mounting boss;

300. a locking plate; 310. a plate body; 311. a guide groove; 312. connecting holes; 313. mounting holes; 320. a locking part;

400. an eccentric wheel; 410. an eccentric guide groove; 411. a positioning groove part; 420. a connecting shaft portion; 430. a connecting portion;

500. A reset member;

600. a knob; 610. a connecting clamping groove;

20. a connecting rod; 21. a shaft body; 22. a hook part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a self-locking ejector mechanism 1, which includes a plurality of sets of self-locking ejector assemblies 10 and a connecting rod 20, where the connecting rod 20 is used to connect the plurality of sets of self-locking ejector assemblies 10; specifically, referring to fig. 3, the self-locking ejecting assembly 10 includes a fixing base 100, a sliding block 200, a locking plate 300 and an eccentric wheel 400; the sliding block 200 is in sliding fit with the fixed seat 100; the locking plate 300 is rotatably connected with the sliding block 200, and the locking plate 300 is movably connected with the fixed seat 100; the eccentric wheel 400 is rotatably connected with the fixing base 100, the eccentric wheel 400 is used for driving the sliding block 200 to move relative to the fixing base 100 and driving the locking plate 300 to move together, and the fixing base 100 can drive the locking plate 300 to rotate and unlock relative to the sliding block 200. The connecting rod 20 is inserted into the fixing base 100 of the plurality of sets of self-locking pushing assemblies 10, and is connected to the eccentric wheels 400 of the plurality of sets of self-locking pushing assemblies 10 and coaxially disposed.

When the self-locking push-out assembly 10 of the present embodiment is used, the rotating eccentric 400 drives the sliding block 200 to move, when the sliding block 200 moves, the locking plate 300 can be driven to move and rotate under the driving action of the fixing base 100, an unlocking function can be realized in the rotation process of the locking plate 300, when the locking plate 300 is unlocked, the locking plate 300 continues to move, so that the push-out function can be realized, and when the locking plate 300 is unlocked, the eccentric 400 is rotated in the reverse direction, so that the locking plate 300 can be driven to rotate in the reverse direction, so as to realize the locking function.

It should be noted that the driving action of the fixing seat 100 means that when the locking plate 300 moves under the driving action of the slider 200, the fixing seat 100 can provide a reaction force for the locking plate 300 through the matching relationship between the locking plate 300 and the fixing seat 100, so as to realize the driving action; in other embodiments, the fixing base 100 may also be provided with an additional driving element to realize the function of driving the locking plate 300 to rotate, which is not described herein again.

In the self-locking push-out assembly 10 of the present embodiment, by arranging the sliding block 200, the fixing seat 100 and the locking plate 300 to cooperate with each other, compared with a conventional linkage mechanism, the self-locking push-out assembly 10 can simultaneously achieve two functions of unlocking (locking) and pushing out only through one part of the locking plate 300, and has a compact structure and good functionality.

In the self-locking ejecting mechanism 1 of the embodiment, by arranging the self-locking ejecting assemblies 10 in any one of the embodiments, two groups of self-locking ejecting assemblies 10 can be driven to move through one rotation, so that unlocking (locking) and ejecting of multiple groups of parts can be realized, the structure is compact, and the using effect is good.

It should be noted that, in the present embodiment, the connecting rod 20 is disposed coaxially with the rotation axis of the eccentric 400, and is used for driving the eccentric 400 to rotate with the central axis of the connecting rod 20 as the rotation axis, so as to drive the eccentric 400 to perform eccentric rotation motion.

Referring to fig. 3 and 4, in an embodiment, the fixing base 100 includes a base 110 and a guiding protrusion 120 protruding from the base 110, the sliding block 200 is slidably engaged with the base 110, and the eccentric wheel 400 is rotatably connected with the base 110; the locking plate 300 includes a plate body 310 and a locking portion 320 connected with each other, the locking portion 320 is used for locking with an external member, the plate body 310 is rotatably connected with the slider 200, the plate body 310 is provided with a guide groove 311 slidably engaged with the guide protrusion 120, and an extending direction of the guide groove 311 is at least partially non-parallel to a moving direction of the slider 200.

With this arrangement, when the eccentric wheel 400 rotates, the slider 200 can be driven to slide in the fixed base 100, and since the lock plate 300 is provided with the guide groove 311 slidably engaged with the guide protrusion 120 of the fixed base 100, and the extending direction of the guide groove 311 is at least partially non-parallel to the moving direction of the slider 200, as shown in the variation state of fig. 5 to 6, when the lock plate 300 moves together with the slider 200, the lock plate 300 can generate a driving force under the engagement of the guide protrusion 120 and the guide groove 311, so that the lock plate 300 rotates relative to the slider 200 under the driving force, and the locking portions 320 are separated from the external member, thereby achieving the unlocking function; as the slider 200 drives the locking plate 300 to move continuously, the connection between the plate body 310 and the locking portion 320 in the locking plate 300 can also abut against an external member, and the pushing-out function is realized; on the contrary, when the eccentric wheel 400 rotates reversely, the self-locking ejecting assembly 10 can generate the motion change as shown in fig. 6 to 5 to realize the locking function, which is not described herein again.

Further, referring to fig. 4 and 5, the plate body 310 is opened with a connection hole 312 and a mounting hole 313, the mounting hole 313 is communicated with the connection hole 312, and the width of the mounting hole 313 is smaller than the diameter of the connection hole 312; the slider 200 is provided with a connecting pin shaft 230 and a mounting convex part 240, the mounting convex part 240 is convexly arranged on the outer wall of the connecting pin shaft 230, and the connecting pin shaft 230 is used for being rotatably connected with the connecting hole 312; when the locking plate 300 is rotated to the mounting position, the mounting protrusions 240 correspond to the mounting holes 313.

When the self-locking push-out assembly 10 of the present embodiment is assembled, the locking plate 300 is first rotated to the mounting hole 313 to correspond to the mounting protrusion 240, and then the connecting pin shaft 230 and the mounting protrusion 240 are respectively inserted into the connecting hole 312 and the mounting hole 313 until the mounting protrusion 240 moves to the outer side of the plate body 310 in the axial direction of the connecting pin shaft 230, and then the slider 200 and the fixing base 100 are assembled such that the guide groove 311 corresponds to the guide protrusion 120, as shown in fig. 5, after the locking plate 300 is connected to the fixing base 100, the mounting protrusion 240 is convenient for the mounting hole 313 to avoid, thereby, the locking plate 300 and the slider 200 can be connected without additional parts, and when the locking plate 300 needs to be detached from the slider 200, the locking plate 300 only needs to be rotated to a preset position to be separated from the connecting pin shaft 230, which is convenient and easy to disassemble and has a simple structure.

Specifically, referring to fig. 4, an eccentric guide groove 410 is formed on a side of the eccentric wheel 400 facing the slider 200, the slider 200 includes a slider body 210 and a driving shaft 220 protruding from the slider body 210 on the side facing the eccentric wheel 400, and the driving shaft 220 is slidably engaged with the eccentric guide groove 410.

With this arrangement, when the eccentric wheel 400 rotates relative to the fixed base 100, the driving shaft 220 may be driven in the eccentric guide groove 410 by contacting with the inner wall of the eccentric guide groove 410, and realize a function of driving the slider 200 to move, that is, a rotation motion of the eccentric wheel 400 is converted into a movement motion of the slider 200, thereby realizing a movement and a rotation motion of the locking plate 300, and further realizing an unlocking (locking) and a pushing-out function of the locking plate 300.

Furthermore, the eccentric wheel 400 is further provided with a positioning slot portion 411 communicated with the eccentric guide slot 410, the positioning slot portion 411 is arranged at an end portion of the eccentric guide slot 410, and the width of the positioning slot portion 411 is not smaller than that of the eccentric guide slot 410.

In this embodiment, by providing the positioning slot portion 411 at the end of the eccentric guide slot 410, the driving shaft 220 can slide in the eccentric guide slot 410 until moving into the positioning slot portion 411 during the rotation of the eccentric guide slot 410, and the driving shaft 220 can be positioned by the provided positioning slot portion 411; for example, after the driving shaft 220 is moved into the positioning slot portion 411, the edge of the positioning slot portion 411 connected to the eccentric guide slot 410 can position the driving shaft 220 to position the unlocked state of the locking plate 300, and when it is required to rotate the eccentric 400 in the reverse direction, the driving shaft 220 can be disengaged from the positioning slot portion 411 by applying a driving force on the eccentric 400 exceeding the elastic force between the positioning slot portion 411 and the driving shaft 220, so as to reset the locking plate 300.

Referring to fig. 7 to 9, in an embodiment, the eccentric wheel 400 includes a connecting shaft portion 420 for rotatably connecting with the fixing base 100, the slider body 210 is opened with an avoiding groove 212, and the connecting shaft portion 420 of the eccentric wheel 400 is inserted into the avoiding groove 212 and rotatably connected with the fixing base 100; when the slider 200 moves relative to the fixing base 100, the connecting shaft portion 420 is at least partially spaced from the inner wall of the avoiding groove 212.

Specifically, in a preferred embodiment, the opening of the bypass groove 212 may be toward the rear end of the slider 200 on the unlocking path, as shown in the arrangement state of fig. 8, and the opening of the bypass groove 212 may be toward the lower left side in the figure; when the locking plate 300 needs to be unlocked, the sliding block 200 can move towards the upper right side by rotating the eccentric wheel 400, and at the moment, the shaft part connecting the shaft part 420 and the fixed seat 100 in rotating fit can be avoided from the avoiding groove 212, so that the eccentric wheel 400 and the sliding block 200 are prevented from moving and interfering.

Further, referring to fig. 3 and 8, the self-locking pushing assembly 10 further includes a reset member 500, and the reset member 500 is respectively connected to the eccentric 400 and the fixing base 100 and is used for driving the eccentric 400 to rotate and reset.

It can be understood that, when the eccentric wheel 400 rotates, the reset member 500 may deform and store elastic potential energy, and when the external driving force is removed, the reset member 500 releases the elastic potential energy and drives the eccentric wheel 400 to reset, thereby driving the linkage action of the self-locking push-out assembly 10 and further implementing the locking function of the locking plate 300.

Referring to fig. 8, in an embodiment, when the self-locking pushing assembly 10 includes the resetting member 500, the resetting member 500 is a torsion spring, and two movable ends of the resetting member 500 are respectively connected to the connecting rod 20 and the fixing base 100 and are used for driving the connecting rod 20 to rotate and reset.

In this embodiment, through adopting the torsional spring, in the assembling process, the torsional spring can overlap and locate on connecting rod 20, has realized the reset function that resets 500 promptly, can also make connecting rod 20 and the piece 500 that resets have compact structure simultaneously to can restrict the deformation that resets 500, improve the durability, excellent in use effect.

Further, the connecting rod 20 includes a shaft body 21 and a hook portion 22, the hook portion 22 is detachably connected to the shaft body 21, and at least a part of the hook portion 22 extends outward from the shaft body 21, and an end of the reset element 500 away from the fixing base 100 is connected to the hook portion 22.

It can be understood that, by adopting the split type connecting rod 20, the step-by-step installation of the hook part 22 and the reset part 500 can be realized in the assembling process, so that the assembling convenience of the self-locking push-out component 10 is improved, and the assembly and the maintenance are convenient.

Referring to fig. 8 and 9, in an embodiment, the fixing base 100 is formed with a receiving groove 111, and the sliding block 200 is movably received in the receiving groove 111.

From this setting, on the one hand the holding tank 111 can lead the removal of slider 200, avoids slider 200 to take place to deflect, also can make simultaneously and have more compact structure between slider 200 and the fixing base 100, is convenient for the configuration optimization that subassembly 10 was released in the auto-lock.

Further, the fixing base 100 is further provided with a sliding portion 130, and the sliding block 200 is provided with a sliding groove 211 in sliding fit with the sliding portion 130.

It can be understood that, by arranging the sliding part 130 parallel to the moving direction of the slider 200 to cooperate with the sliding groove 211, the sliding part 130 can guide the movement of the slider 200 to improve the smoothness and stability of the movement of the slider 200; in a preferred embodiment, the sliding portion 130 and the sliding groove 211 can be provided with a plurality of sets, so as to achieve the purpose of further improving the moving smoothness of the sliding block 200.

Referring to fig. 8, in an embodiment, a connecting portion 430 is convexly disposed on a side of the eccentric wheel 400 away from the sliding block 200, the self-locking ejecting assembly 10 further includes a knob 600, the knob 600 is disposed with a connecting slot 610, and the knob 600 is snap-fitted with the connecting portion 430 through the connecting slot 610.

When the self-locking push-out assembly 10 of the present embodiment is assembled, the knob 600 may be sleeved on the connecting portion 430 through the connecting slot 610, and the connecting portion 430 and the connecting slot 610 are engaged with each other to achieve connection therebetween; when the self-locking push-out assembly 10 of the embodiment is used, when the eccentric wheel 400 needs to be rotated, a user can operate the knob 600 by hand to rotate, so that the operation is convenient and fast; in addition, through setting up knob 600 and eccentric wheel 400 that can dismantle the connection, can realize the convenient dismouting function of knob 600, the later maintenance of the subassembly 10 is released in the auto-lock not only can be convenient for, need not to release the subassembly 10 to the auto-lock and carry out whole change when knob 600 damages, reduces the maintenance cost, also can be according to the knob 600 of user demand installation corresponding model simultaneously to improve the suitability that the subassembly 10 was released in the auto-lock.

In other embodiments, the self-locking ejection assembly 10 may also be provided with a driving element in powered connection with the cam 400, which may drive the cam 400 to rotate to achieve an automatically controlled unlocking (locking) and ejection function.

Referring to fig. 10, the present invention further provides a medical apparatus, which includes the self-locking pushing assembly 10 or the self-locking pushing mechanism 1 in any one of the above embodiments, a fixed body 2 and a movable body 3, the self-locking pushing assembly 10 is fixed on the fixed body 2 through a fixing base 100, the movable body 3 is movably connected with the fixed body 2, and a locking plate 300 is used for locking (unlocking) and pushing out the movable body 3.

It can be understood that, in the medical device of the present embodiment, by using the self-locking ejector assembly 10 or the self-locking ejector assembly 10 of any of the above embodiments, compared with the conventional medical device, only one component of the lock plate 300 is needed, so that the medical device has a more compact structure on the premise of achieving both the unlocking (locking) function and the ejecting function.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention may be understood as specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. 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.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more of the embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A self-locking ejector assembly, comprising:

a fixed seat;

the sliding block is in sliding fit with the fixed seat;

the eccentric wheel is used for driving the sliding block to move relative to the fixed seat and driving the locking plate to move together, and the fixed seat can drive the locking plate to rotate and unlock relative to the sliding block.

2. The self-locking push-out assembly according to claim 1, wherein the fixing seat comprises a seat body and a guide protrusion protruding from the seat body, the sliding block is in sliding fit with the seat body, and the eccentric wheel is rotatably connected with the seat body; the locking plate comprises a plate body and a locking part which are connected, the locking part is used for being locked with an external component in a clamping mode, the plate body is rotatably connected with the sliding block, a guide groove in sliding fit with the guide convex part is formed in the plate body, and the extending direction of the guide groove is at least partially nonparallel to the moving direction of the sliding block.

3. The self-locking push-out assembly according to claim 2, wherein the plate body is provided with a connecting hole and a mounting hole, the mounting hole is communicated with the connecting hole, and the width of the mounting hole is smaller than the diameter of the connecting hole; the sliding block is provided with a connecting pin shaft and a mounting convex part, the mounting convex part is convexly arranged on the outer wall of the connecting pin shaft, and the connecting pin shaft is used for being rotatably connected with the connecting hole; the mounting protrusion corresponds to the mounting hole when the locking plate is rotated to a mounting position.

4. The self-locking ejection assembly according to claim 1, wherein an eccentric guide groove is formed in a side of the eccentric wheel facing the slider, the slider includes a slider body and a driving shaft protruding from the slider body toward the eccentric wheel, and the driving shaft is slidably engaged with the eccentric guide groove.

5. The self-locking push-out assembly according to claim 1, wherein the eccentric wheel includes a connecting shaft portion rotatably connected to the fixing base, the slider body is provided with an avoidance groove, and the connecting shaft portion is disposed in the avoidance groove and connected to the fixing base; when the slider moves relative to the fixed seat, at least part of the connecting shaft part is arranged at intervals with the inner wall of the avoiding groove.

6. The self-locking ejection assembly of claim 1 further comprising a reset element, wherein the reset element is connected to the eccentric and the stationary seat, respectively, and is configured to drive the eccentric to rotate and reset.

7. The self-locking ejector assembly as recited in claim 1, wherein the fixing base defines a receiving groove, and the sliding block is movably received in the receiving groove.

8. The self-locking push-out assembly according to claim 1, wherein the fixing base is further provided with a sliding portion, and the sliding block is provided with a sliding groove in sliding fit with the sliding portion.

9. The self-locking push-out assembly according to any one of claims 1 to 8, wherein a connecting portion is convexly arranged on one side of the eccentric wheel away from the sliding block, the self-locking push-out assembly further comprises a knob, a connecting clamping groove is formed in the knob, and the knob is in clamping fit with the connecting portion through the connecting clamping groove.

10. A self-locking ejector mechanism, comprising:

a plurality of sets of self-locking ejector assemblies according to any one of claims 1 to 9; and

11. The self-locking ejector mechanism of claim 10, wherein when the self-locking ejector assembly comprises a reset member, the reset member is a torsion spring, and two movable ends of the reset member are respectively connected to the connecting rod and the fixed seat and are used for driving the connecting rod to rotate and reset.

12. The self-locking ejector mechanism of claim 11, wherein the link comprises a shaft body and a hook portion, the hook portion is detachably connected to the shaft body, the hook portion extends at least partially from the shaft body, and one end of the reset member, which is away from the fixing base, is connected to the hook portion.

13. A medical device comprising a self-locking ejector assembly according to any of claims 1-9, or a self-locking ejector mechanism according to any of claims 10-12.