Self-locking ejection component, self-locking ejection mechanism and medical device

Abstract

The present invention provides a self-locking ejection assembly, a self-locking ejection mechanism and a medical device. The self-locking ejection assembly includes a fixed seat, a slider, a locking plate and an eccentric wheel; the slider is slidably matched with the fixed seat; the locking plate is rotationally connected to the slider, and the locking plate is movably connected to the fixed seat; the eccentric wheel is rotationally connected to the fixed seat, and the eccentric wheel is used to drive the slider to move relative to the fixed seat, and drive the locking plate to move together, and the fixed seat can drive the locking plate to rotate and unlock relative to the slider. In the self-locking ejection assembly of this embodiment, by setting the cooperation of the slider, the fixed seat and the locking plate, compared with the traditional linkage mechanism, only one locking plate component can realize the two functions of unlocking (locking) and ejection at the same time, and the structure is compact and the functionality is good.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical manufacturing, and in particular to a self-locking ejection component, a self-locking ejection mechanism and medical equipment. Background Art

[0002] In the medical devices currently on the market, such as the infusion information acquisition system, a self-locking device and an ejection device are usually provided inside to realize the two functions of locking and ejection. Since there are two different mechanisms inside, the equipment has more parts and the overall structure is more complicated.

[0003] Therefore, it is necessary to make improvements to the above problems in order to change the current situation. Summary of the invention

[0004] The invention provides a self-locking ejection component, a self-locking ejection mechanism and a medical device, which are used to solve the problem that a self-locking device and an ejection device need to be separately provided in traditional medical devices.

[0005] The present invention provides a self-locking ejection assembly, comprising:

[0006] Fixed seat;

[0007] A slider, slidably matched with the fixing seat;

[0008] A lock plate is rotatably connected to the slider, and the lock plate is movably connected to the fixing seat; and

[0009] An eccentric wheel is rotatably connected to the fixing seat, and is used to drive the slider to move relative to the fixing seat and drive the lock plate to move together, and the fixing seat can drive the lock plate to rotate and unlock relative to the slider.

[0010] According to one embodiment of the present invention, the fixed seat includes a seat body and a guide protrusion protruding from the seat body, the slider is slidably matched with the seat body, and the eccentric wheel is rotatably connected with the seat body; the locking plate includes a plate body and a locking portion connected to each other, the locking portion is used to lock with an external component, the plate body is rotatably connected with the slider, and the plate body is provided with a guide groove slidably matched with the guide protrusion, and the extension direction of the guide groove is at least partially non-parallel to the moving direction of the slider.

[0011] According to one embodiment of the present invention, the plate body is provided with a connecting hole and a mounting hole, the mounting hole is connected to the connecting hole, and the width of the mounting hole is smaller than the diameter of the connecting hole; the slider is provided with a connecting pin and a mounting protrusion, the mounting protrusion is protruding on the outer wall of the connecting pin, and the connecting pin is used for rotationally connecting with the connecting hole; when the locking plate is rotated to the installation position, the mounting protrusion corresponds to the mounting hole.

[0012] According to one embodiment of the present invention, an eccentric guide groove is provided on a side of the eccentric wheel facing the slider, and the slider includes a slider body and a drive shaft protruding from the slider body facing the eccentric wheel, and the drive shaft is slidably engaged with the eccentric guide groove.

[0013] According to one embodiment of the present invention, the eccentric wheel includes a connecting shaft portion rotatably connected to the fixed seat, the slider body is provided with an avoidance groove, the connecting shaft portion is passed through the avoidance groove and is connected to the fixed seat; when the slider moves relative to the fixed seat, the connecting shaft portion is at least partially spaced apart from the inner wall of the avoidance groove.

[0014] According to an embodiment of the present invention, the self-locking ejection assembly further comprises a reset member, which is respectively connected to the eccentric wheel and the fixing seat and is used to drive the eccentric wheel to rotate and reset.

[0015] According to an embodiment of the present invention, the fixing seat is provided with a receiving groove, and the sliding block can be movably received in the receiving groove.

[0016] According to an embodiment of the present invention, the fixing seat is further provided with a sliding portion, and the sliding block is provided with a sliding groove that slidably cooperates with the sliding portion.

[0017] According to one embodiment of the present invention, a connecting portion is protruded from a side of the eccentric wheel away from the slider, and the self-locking ejection assembly further comprises a knob, the knob is provided with a connecting slot, and the knob is engaged with the connecting portion via the connecting slot.

[0018] The present invention also provides a self-locking ejection mechanism, comprising:

[0019] A plurality of self-locking ejection assemblies as described in any one of the above; and

[0020] The connecting rod is inserted into the fixing seats of the plurality of sets of the self-locking and pushing out assemblies, and is connected to the eccentric wheels of the plurality of sets of the self-locking and pushing out assemblies and is coaxially arranged.

[0021] According to an embodiment of the present invention, when the self-locking ejection assembly includes 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 fixing seat, and are used to drive the connecting rod to rotate and reset.

[0022] According to one embodiment of the present invention, the connecting rod includes a shaft body and a hook portion, the hook portion is detachably connected to the shaft body, and at least part of the hook portion extends outward from the shaft body, and one end of the reset member away from the fixing seat is connected to the hook portion.

[0023] The present invention further provides a medical device, comprising a self-locking ejection assembly as described in any one of the above items, or a self-locking ejection mechanism as described in any one of the above items.

[0024] Implementing the embodiments of the present invention has the following beneficial effects:

[0025] When using the self-locking and ejection assembly of this embodiment, the rotating eccentric wheel drives the slider to move. When the slider moves, it can drive the lock plate to move and rotate under the driving action of the fixed seat. The unlocking function can be realized during the rotation of the lock plate. After the lock plate is unlocked, the lock plate continues to move to realize the ejection function. The reverse rotation of the eccentric wheel can drive the lock plate to rotate in the opposite direction to realize the locking function.

[0026] In the self-locking and ejecting assembly of this embodiment, by setting the cooperation of the slider, the fixed seat and the locking plate, compared with the traditional linkage mechanism, the self-locking and ejecting assembly can simultaneously realize the two functions of unlocking (locking) and ejecting through only one locking plate component, with a compact structure and good functionality.

[0027] In the self-locking ejection mechanism of this embodiment, by setting the self-locking ejection component in any of the above embodiments, two groups of self-locking ejection components can be driven to move through one rotation, thereby realizing unlocking (locking) and ejecting of multiple parts, with a compact structure and good use effect.

[0028] In the medical device of this embodiment, by adopting the self-locking ejection component or the self-locking ejection component in any of the above embodiments, compared with traditional medical devices, only one locking plate component is needed to make the medical device have a more compact structure while realizing the two functions of unlocking (locking) and ejecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] in:

[0031] Figure 1 is a three-dimensional view of a self-locking ejection mechanism in an embodiment of the present invention;

[0032] Figure 2 is a three-dimensional view of a self-locking ejection mechanism in an embodiment of the present invention;

[0033] Figure 3 is a three-dimensional view of a self-locking ejection assembly in an embodiment of the present invention;

[0034] Figure 4 is a schematic diagram of the combination of a slider and an eccentric wheel in an embodiment of the present invention;

[0035] Figure 5 is a top view of the self-locking ejection assembly in a locked state in an embodiment of the present invention;

[0036] Figure 6 is a top view of the self-locking ejection assembly in an unlocked state in an embodiment of the present invention;

[0037] Figure 7 is an exploded view of a self-locking ejection mechanism in an embodiment of the present invention;

[0038] Figure 8 yes Figure 7 A magnified view of part A in the middle;

[0039] Fig. 9 yes Figure 7 A magnified view of the detail B in the middle;

[0040] Fig.10 is a stereoscopic view of a medical device in an embodiment of the present invention;

[0041] Reference numerals:

[0042] 1. Self-locking ejection mechanism; 2. Fixed body; 3. Movable body

[0043] 10. Self-locking ejection assembly;

[0044] 100, fixed seat; 110, seat body; 111, receiving groove; 120, guide protrusion; 130, sliding part;

[0045] 200, slider; 210, slider body; 211, slide groove; 212, avoidance groove; 220, drive shaft; 230, connecting pin shaft; 240, mounting protrusion;

[0046] 300, locking plate; 310, plate body; 311, guide groove; 312, connecting hole; 313, mounting hole; 320, locking portion;

[0047] 400, eccentric wheel; 410, eccentric guide groove; 411, positioning groove portion; 420, connecting shaft portion; 430, connecting portion;

[0048] 500, reset piece;

[0049] 600, knob; 610, connection slot;

[0050] 20. Connecting rod; 21. Shaft body; 22. Hook part. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] See also Figure 1 and Figure 2 As shown, the embodiment of the present invention provides a self-locking ejection mechanism 1, which includes a plurality of self-locking ejection components 10 and a connecting rod 20, wherein the connecting rod 20 is used to connect the plurality of self-locking ejection components 10; specifically, refer to Figure 3 As shown, the self-locking ejection assembly 10 includes a fixed seat 100, a slider 200, a locking plate 300 and an eccentric wheel 400; the slider 200 is slidably matched with the fixed seat 100; the locking plate 300 is rotatably connected with the slider 200, and the locking plate 300 is movably connected with the fixed seat 100; the eccentric wheel 400 is rotatably connected with the fixed seat 100, and the eccentric wheel 400 is used to drive the slider 200 to move relative to the fixed seat 100, and drive the locking plate 300 to move together, and the fixed seat 100 can drive the locking plate 300 to rotate and unlock relative to the slider 200. The connecting rod 20 is arranged in the fixed seats 100 of multiple sets of self-locking ejection assemblies 10, and is connected to the eccentric wheels 400 of multiple sets of self-locking ejection assemblies 10 and is coaxially arranged.

[0053] When the self-locking ejection assembly 10 of the present embodiment is used, the rotating eccentric wheel 400 drives the slider 200 to move. When the slider 200 moves, the locking plate 300 can be driven to move and rotate under the driving action of the fixed seat 100. During the rotation of the locking plate 300, the unlocking function can be realized. After the locking plate 300 is unlocked, the locking plate 300 continues to move to realize the ejection function. The reverse rotation of the eccentric wheel 400 can drive the locking plate 300 to rotate in the reverse direction to realize the locking function.

[0054] It should be noted that the driving function of the fixed seat 100 means that when the lock plate 300 moves under the driving action of the slider 200, the fixed seat 100 can provide a reaction force for the lock plate 300 through the matching relationship between the lock plate 300 and the fixed seat 100 to achieve the driving function; in other embodiments, the fixed seat 100 can also be provided with additional driving elements to achieve the function of driving the lock plate 300 to rotate, which will not be elaborated here.

[0055] In the self-locking and ejecting assembly 10 of the present embodiment, by setting the cooperation between the slider 200, the fixing seat 100 and the locking plate 300, compared with the traditional linkage mechanism, the self-locking and ejecting assembly 10 can simultaneously realize the two functions of unlocking (locking) and ejecting through only one component of the locking plate 300, and has a compact structure and good functionality.

[0056] In the self-locking ejection mechanism 1 of this embodiment, by setting the self-locking ejection component 10 in any of the above embodiments, two groups of self-locking ejection components 10 can be driven to move through one rotation, thereby realizing the unlocking (locking) and ejection of multiple groups of parts, with a compact structure and good use effect.

[0057] It should be noted that, in this embodiment, the connecting rod 20 is coaxially arranged with the rotation axis of the eccentric wheel 400 and is used to drive the eccentric wheel 400 to rotate with the central axis of the connecting rod 20 as the rotation axis, so as to drive the eccentric wheel 400 to perform eccentric rotational motion.

[0058] See also Figure 3 and Figure 4 As shown, in one embodiment, the fixed seat 100 includes a seat body 110 and a guide protrusion 120 protruding from the seat body 110, the slider 200 is slidably matched with the seat body 110, and the eccentric wheel 400 is rotatably connected with the seat body 110; the locking plate 300 includes a plate body 310 and a locking portion 320 connected to each other, the locking portion 320 is used to lock with an external component, the plate body 310 is rotatably connected with the slider 200, and the plate body 310 is provided with a guide groove 311 slidably matched with the guide protrusion 120, and the extension direction of the guide groove 311 is at least partially non-parallel to the moving direction of the slider 200.

[0059] Thus, when the eccentric wheel 400 rotates, the slider 200 can be driven to slide in the fixing seat 100. Since the locking plate 300 is provided with a guide groove 311 that is slidably matched with the guide protrusion 120 of the fixing seat 100, and the extension direction of the guide groove 311 is at least partially non-parallel to the moving direction of the slider 200, as shown in FIG. Figures 5 and 6 When the locking plate 300 moves with the slider 200, the locking plate 300 can generate a driving force under the cooperation of the guide protrusion 120 and the guide groove 311, so that the locking plate 300 rotates relative to the slider 200 under the driving force, and the locking portion 320 is separated from the external component, thereby realizing the unlocking function; as the slider 200 drives the locking plate 300 to continue to move, the connection between the plate body 310 and the locking portion 320 of the locking plate 300 can also abut against the external component, and realize the pushing function; on the contrary, when the eccentric wheel 400 rotates in the opposite direction, the self-locking pushing component 10 can generate the following Figure 6 to Figure 5 The action changes to achieve the locking function are not described here.

[0060] Further, see Figure 4 and Figure 5As shown, the plate body 310 is provided with a connecting hole 312 and a mounting hole 313, the mounting hole 313 is connected to the connecting hole 312, and the width of the mounting hole 313 is smaller than the diameter of the connecting hole 312; the slider 200 is provided with a connecting pin 230 and a mounting protrusion 240, the mounting protrusion 240 is protruded on the outer wall of the connecting pin 230, and the connecting pin 230 is used for rotationally connecting with the connecting hole 312; when the locking plate 300 is rotated to the installation position, the mounting protrusion 240 corresponds to the mounting hole 313.

[0061] When assembling the self-locking ejection assembly 10 of the present embodiment, firstly, the lock plate 300 is rotated until the mounting hole 313 corresponds to the mounting protrusion 240, and then the connecting pin 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 outside of the plate body 310 in the axial direction of the connecting pin 230, and then the slider 200 is assembled with the fixing seat 100 so that the guide groove 311 corresponds to the guide protrusion 120, see Figure 5 As shown, after the locking plate 300 is connected to the fixing seat 100, the mounting protrusion 240 facilitates avoiding the mounting hole 313. Thus, the locking plate 300 and the slider 200 can be connected without any additional components. When the locking plate 300 needs to be removed from the slider 200, the locking plate 300 only needs to be rotated to a preset position to be separated from the connecting pin 230. The disassembly and assembly is convenient and the structure is simple.

[0062] Specifically, see Figure 4 As shown, an eccentric guide groove 410 is provided on the side of the eccentric wheel 400 facing the slider 200 . The slider 200 includes a slider body 210 and a drive shaft 220 protruding from the slider body 210 on the side facing the eccentric wheel 400 . The drive shaft 220 is slidably engaged with the eccentric guide groove 410 .

[0063] Thus, when the eccentric wheel 400 rotates relative to the fixed seat 100, the driving shaft 220 can be driven in the eccentric guide groove 410 by contacting the inner wall of the eccentric guide groove 410, and realize the function of driving the slider 200 to move, that is, converting the rotational action of the eccentric wheel 400 into the movement action of the slider 200, thereby realizing the movement and rotation action of the locking plate 300, and further realizing the unlocking (locking) and pushing out functions of the locking plate 300.

[0064] Furthermore, the eccentric wheel 400 is further provided with a positioning groove portion 411 connected to the eccentric guide groove 410 . The positioning groove portion 411 is provided at the end of the eccentric guide groove 410 , and the width of the positioning groove portion 411 is not less than that of the eccentric guide groove 410 .

[0065] In this embodiment, a positioning groove portion 411 is provided at the end of the eccentric guide groove 410. During the rotation of the eccentric guide groove 410, the drive shaft 220 can slide in the eccentric guide groove 410 until it moves into the positioning groove portion 411. The drive shaft 220 can be positioned by the provided positioning groove portion 411; for example, after the drive shaft 220 moves into the positioning groove portion 411, the edge of the positioning groove portion 411 connected to the eccentric guide groove 410 can position the drive shaft 220 to position the unlocked state of the lock plate 300. When the eccentric wheel 400 needs to be rotated in the opposite direction, it is only necessary to apply a driving force on the eccentric wheel 400 that exceeds the elastic force between the positioning groove portion 411 and the drive shaft 220, so as to disengage the drive shaft 220 from the positioning groove portion 411 to achieve the reset of the lock plate 300.

[0066] See also Figures 7 to 9 As shown, in one embodiment, the eccentric wheel 400 includes a connecting shaft portion 420 for rotationally connecting with the fixed seat 100, the slider body 210 is provided with an avoidance groove 212, and the connecting shaft portion 420 of the eccentric wheel 400 is inserted into the avoidance groove 212 and is rotationally connected with the fixed seat 100; when the slider 200 moves relative to the fixed seat 100, the connecting shaft portion 420 is at least partially spaced from the inner wall of the avoidance groove 212.

[0067] Specifically, in a preferred embodiment, the opening of the avoidance groove 212 may be toward the rear end of the slider 200 on the unlocking path, such as Figure 8 In the placement state shown, the opening of the avoidance groove 212 can be toward the lower left side in the figure; when the lock plate 300 needs to be unlocked, the slider 200 can be moved toward the upper right side by rotating the eccentric wheel 400. At this time, the connecting shaft 420 and the shaft that rotates with the fixed seat 100 can avoid the avoidance groove 212 to avoid movement interference between the eccentric wheel 400 and the slider 200.

[0068] Further, see Figure 3 and Figure 8 As shown, the self-locking ejection assembly 10 further includes a reset member 500 , which is respectively connected to the eccentric wheel 400 and the fixing seat 100 , and is used to drive the eccentric wheel 400 to rotate and reset.

[0069] It can be understood that when the eccentric wheel 400 rotates, the reset member 500 can be deformed and store elastic potential energy. 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 ejection assembly 10, and further realizing the locking function of the lock plate 300.

[0070] See also Figure 8As shown, in one embodiment, when the self-locking ejection assembly 10 includes a reset member 500, the reset member 500 is a torsion spring, and the two movable ends of the reset member 500 are respectively connected to the connecting rod 20 and the fixing seat 100, and are used to drive the connecting rod 20 to rotate and reset.

[0071] In this embodiment, by adopting a torsion spring, during the assembly process, the torsion spring can be sleeved on the connecting rod 20, thereby realizing the resetting function of the resetting member 500. At the same time, the connecting rod 20 and the resetting member 500 can have a compact structure, and the deformation of the resetting member 500 can be limited, thereby improving durability and achieving good use effect.

[0072] Furthermore, 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 portion of the hook portion 22 extends outward from the shaft body 21 , and one end of the reset member 500 away from the fixing seat 100 is connected to the hook portion 22 .

[0073] It can be understood that by adopting a split connecting rod 20, during the assembly process, the hook portion 22 and the reset member 500 can be installed step by step, so as to improve the assembly convenience of the self-locking ejection assembly 10 and facilitate assembly and maintenance.

[0074] See also Figure 8 and Fig. 9 As shown, in one embodiment, the fixing seat 100 is provided with a receiving groove 111 , and the slider 200 can be movably received in the receiving groove 111 .

[0075] With this arrangement, on the one hand, the accommodating groove 111 can guide the movement of the slider 200 to prevent the slider 200 from deflecting, and at the same time, it can also make the structure between the slider 200 and the fixing seat 100 more compact, which is convenient for structural optimization of the self-locking ejection component 10.

[0076] Furthermore, the fixing seat 100 is further provided with a sliding portion 130 , and the sliding block 200 is provided with a sliding groove 211 slidably matched with the sliding portion 130 .

[0077] It can be understood that by setting a sliding part 130 parallel to the moving direction of the slider 200 and cooperating with the slide groove 211, the sliding part 130 can guide the movement of the slider 200 to improve the movement smoothness and stability of the slider 200; in a preferred embodiment, multiple groups of sliding parts 130 and slide grooves 211 can be provided to achieve the purpose of further improving the movement smoothness of the slider 200.

[0078] See also Figure 8As shown, in one embodiment, a connecting portion 430 is protruded from the side of the eccentric wheel 400 away from the slider 200, and the self-locking ejection assembly 10 also includes a knob 600, which is provided with a connecting slot 610, and the knob 600 is engaged with the connecting portion 430 through the connecting slot 610.

[0079] When assembling the self-locking ejection assembly 10 of the present embodiment, the knob 600 can be sleeved on the connecting portion 430 through the connecting slot 610, and the connection between the two can be achieved by the snap-fitting cooperation between the connecting portion 430 and the connecting slot 610; when using the self-locking ejection assembly 10 of the present embodiment, when it is necessary to rotate the eccentric wheel 400, the user can operate the knob 600 by hand to rotate it, which is convenient to operate; in addition, by providing a detachably connected knob 600 and eccentric wheel 400, the convenient disassembly and assembly function of the knob 600 can be achieved, which not only facilitates the later maintenance of the self-locking ejection assembly 10, but also eliminates the need to replace the self-locking ejection assembly 10 as a whole when the knob 600 is damaged, thereby reducing maintenance costs. At the same time, the corresponding model of knob 600 can also be installed according to usage requirements to improve the applicability of the self-locking ejection assembly 10.

[0080] In other embodiments, the self-locking ejection assembly 10 may also be provided with a driving element that is dynamically connected to the eccentric wheel 400 , and the driving element may drive the eccentric wheel 400 to rotate so as to realize the automatically controlled unlocking (locking) and ejection functions.

[0081] See also Fig.10 As shown, the present invention also provides a medical device, which includes the self-locking ejection component 10 or the self-locking ejection mechanism 1 in any one of the above embodiments, as well as a fixed body 2 and a movable body 3, the self-locking ejection component 10 is fixed to the fixed body 2 through a fixed seat 100, the movable body 3 is movably connected to the fixed body 2, and the locking plate 300 is used to lock (unlock) and eject the movable body 3.

[0082] It can be understood that in the medical device of this embodiment, by adopting the self-locking ejection component 10 or the self-locking ejection component 10 in any of the above embodiments, compared with traditional medical devices, only one component, the locking plate 300, is needed to make the medical device have a more compact structure while realizing the two functions of unlocking (locking) and ejecting.

[0083] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0084] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0085] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more groups of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking ejection assembly, characterized in that: include: The fixing seat comprises a seat body and a guide protrusion protruding from the seat body; A slider, slidably matched with the seat body; A lock plate, comprising a plate body and a lock portion connected to each other, wherein the lock portion is used to engage and lock with an external component, the plate body is rotatably connected to the slider, and the lock plate is movably connected to the fixing seat, the plate body is provided with a guide groove slidably matched with the guide protrusion, and the extension direction of the guide groove is at least partially non-parallel to the moving direction of the slider; as well as An eccentric wheel is rotatably connected to the seat body, and the eccentric wheel is used to drive the slider to move relative to the fixed seat and drive the lock plate to move together, and the fixed seat can drive the lock plate to rotate and unlock relative to the slider; the eccentric wheel includes a connecting shaft portion rotatably connected to the fixed seat, the slider body is provided with an avoidance groove, the connecting shaft portion is passed through the avoidance groove and connected to the fixed seat; when the slider moves relative to the fixed seat, the connecting shaft portion is at least partially spaced from the inner wall of the avoidance groove.

2. The self-locking ejection assembly according to claim 1, characterized in that: The plate body is provided with a connecting hole and a mounting hole, the mounting hole is connected to the connecting hole, and the width of the mounting hole is smaller than the diameter of the connecting hole; the slider is provided with a connecting pin and a mounting protrusion, the mounting protrusion is protruding on the outer wall of the connecting pin, and the connecting pin is used for rotationally connecting with the connecting hole; when the locking plate is rotated to the installation position, the mounting protrusion corresponds to the mounting hole.

3. The self-locking ejection assembly according to claim 1, characterized in that: An eccentric guide groove is provided on one side of the eccentric wheel facing the slider. The slider comprises a slider body and a drive shaft protruding from the slider body on the side facing the eccentric wheel. The drive shaft is slidably matched with the eccentric guide groove.

4. The self-locking ejection assembly according to claim 1, characterized in that: The self-locking ejection assembly also includes a reset member, which is respectively connected to the eccentric wheel and the fixing seat and is used to drive the eccentric wheel to rotate and reset.

5. The self-locking ejection assembly according to claim 1, characterized in that: The fixing seat is provided with a receiving groove, and the sliding block can be movably received in the receiving groove.

6. The self-locking ejection assembly according to claim 1, characterized in that: The fixing seat is also provided with a sliding portion, and the sliding block is provided with a sliding groove which is slidably matched with the sliding portion.

7. The self-locking ejection assembly according to any one of claims 1 to 6, characterized in that: A connecting portion is protruded from one side of the eccentric wheel away from the sliding block. The self-locking ejection assembly further comprises a knob, which is provided with a connecting slot, and the knob is engaged with the connecting portion through the connecting slot.

8. A self-locking ejection mechanism, characterized in that: include: A plurality of groups of self-locking ejection components as described in any one of claims 1 to 7; as well as The connecting rod is inserted into the fixing seats of the plurality of sets of the self-locking and pushing out assemblies, and is connected to the eccentric wheels of the plurality of sets of the self-locking and pushing out assemblies and is coaxially arranged.

9. The self-locking ejection mechanism according to claim 8, characterized in that: When the self-locking ejection assembly includes 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 fixing seat, and are used to drive the connecting rod to rotate and reset.

10. The self-locking ejection mechanism according to claim 9, characterized in that: The connecting rod includes a shaft body and a hook portion, the hook portion is detachably connected to the shaft body, and at least a portion of the hook portion extends outward from the shaft body, and one end of the reset member away from the fixing seat is connected to the hook portion.

11. A medical device, characterized in that: It comprises the self-locking ejection assembly as described in any one of claims 1 to 7, or the self-locking ejection mechanism as described in any one of claims 8 to 10.

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