A syringe mounting structure

Abstract

The utility model discloses a syringe mounting structure, include: substrate, first clasp subassembly and second clasp subassembly, first clasp subassembly includes fixed part and rotation clasp part, fixed part fixedly arranged on the substrate, rotation clasp part one end articulates with fixed part, and the other end rotates around the axis of articulation shaft, to realize the butt joint of rotation clasp part and fixed part or separate, wherein, when rotation clasp part and fixed part are pasted, both can keep relative fixed, and cooperation forms an installation groove, second clasp subassembly is used for clamping and fixed syringe push rod, and second clasp subassembly sliding installation is established on the substrate, to move in vertical direction relative to first clasp subassembly, the utility model discloses the above -mentioned setting reaches the purpose of being convenient for the syringe sleeve and syringe push rod position fixedness, can also effectively promote the stability of liquid when being executed suction or push action.

Description

Technical Field

[0001] This utility model relates to the field of syringe installation, and in particular to a syringe installation structure. Background Technology

[0002] In the field of nanomedicine preparation, syringes are the core tools for precisely delivering nanoparticle solutions and controlling the ratio of reactants. The ease of installation and stability of syringes directly determine the precision and reliability of nanomedicine synthesis, dispersion and encapsulation processes.

[0003] In existing technologies, syringe sleeves are mostly installed through local contact (such as locking and positioning with clamps) or single-point locking. However, in the process of nanomedicine preparation, the syringe plunger needs to move back and forth at high speed to achieve reciprocating suction and push of liquid. Therefore, this installation method is prone to radial displacement or axial movement of the syringe sleeve during the plunger movement due to high-speed movement or vibration. This can lead to instability of the liquid during suction and push, affecting the subsequent nanomedicine preparation effect.

[0004] Therefore, a syringe mounting structure is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a syringe mounting structure that not only limits and fixes the syringe sleeve and syringe plunger, but also effectively improves the stability of the liquid when it is being aspirated or pushed.

[0006] To solve the above-mentioned technical problems, this utility model provides a syringe mounting structure, including: a base plate, a first engaging component, and a second engaging component;

[0007] The first engaging assembly includes a fixing part and a rotating engaging part;

[0008] The fixing part is fixedly disposed on the substrate;

[0009] One end of the rotating engaging part is hinged to the fixed part, and the other end rotates around the axis of the hinge shaft to achieve the docking and fitting or separation of the rotating engaging part and the fixed part;

[0010] When the rotating engaging part and the fixing part are in contact, the two can remain relatively fixed and cooperate to form an installation groove. The installation groove matches the outer wall of the syringe sleeve and the skirt that is arranged around the bottom of the syringe sleeve.

[0011] The second engaging component is used to engage and fix the syringe plunger, and the second engaging component is slidably mounted on the base plate to move vertically relative to the first engaging component, so that the syringe plunger can reciprocate within the syringe sleeve.

[0012] Furthermore, both the fixing part and the rotating engaging part are provided with a first semi-circular groove extending vertically on the side where they fit together. The cylindrical channel defined by the first semi-circular groove of the fixing part and the first semi-circular groove of the rotating engaging part matches the outer wall of the syringe sleeve.

[0013] A second semicircular groove is provided in the middle of the first semicircular groove, which is coaxial with the first semicircular groove. The annular groove defined by the second semicircular groove of the fixing part and the second semicircular groove of the rotating engaging part matches the skirt that is arranged around the bottom end of the syringe sleeve.

[0014] When the rotating engaging part is engaged with the fixing part, the two first semicircular grooves and the two second semicircular grooves together form the mounting groove.

[0015] Furthermore, there are two second engaging components. The mounting slots of the first engaging component and the second engaging component are respectively located directly below the two mounting slots.

[0016] Furthermore, a first guide boss and a first guide groove are respectively provided on the side where the fixing part and the rotating engaging part are in contact with each other. The first guide boss and the first guide groove cooperate with each other for the alignment and engagement of the fixing part and the rotating engaging part.

[0017] There are three of the first guide bosses and the first guide grooves;

[0018] The two first semicircular grooves are located between two adjacent first guide bosses or two adjacent first guide grooves.

[0019] Furthermore, the length of the first guide boss or the first guide groove located between two adjacent first semicircular grooves in the horizontal direction is greater than the length of the other two first guide bosses or the first guide grooves in the horizontal direction.

[0020] Furthermore, the first engaging assembly also includes a first positioning bolt;

[0021] The first positioning bolt is threaded through the rotating engagement portion, and the side of the fixing portion that is in contact with the rotating engagement portion is provided with a first threaded connection groove that matches the first positioning bolt.

[0022] Furthermore, the second engaging assembly includes a sliding bearing portion and a flipping clamping portion;

[0023] The sliding support portion is slidably mounted on the substrate;

[0024] One end of the flip-fitting part is hinged to the outer wall of the sliding support part away from the substrate, and the other end can be flipped to the upper surface of the sliding support part and remain relatively fixed.

[0025] When the other end of the flip-pressing part flips to the upper end face of the sliding support part, a positioning clamping gap can be formed between it and the upper end face of the sliding support part for pressing and limiting the syringe plunger.

[0026] Furthermore, a second guide boss and a second guide groove are respectively provided on the side of the sliding bearing portion facing away from the substrate and the inner side of the flip-fastening portion. The second guide boss and the second guide groove cooperate with each other for the alignment and engagement of the sliding bearing portion and the flip-fastening portion.

[0027] Furthermore, the second engaging assembly also includes a second positioning bolt;

[0028] The second positioning bolt is threaded through the flip-and-press part, and the sliding bearing part is provided with a second threaded connection groove that matches the second positioning bolt on the side away from the substrate.

[0029] Furthermore, the flip-fastening part is configured as an L-shaped structure formed in one piece;

[0030] The flip-fastening part includes a vertical part and a horizontal part;

[0031] The second guide protrusion is disposed on the side of the vertical portion facing the sliding bearing portion, and the second guide groove is disposed on the side of the sliding bearing portion away from the substrate;

[0032] The horizontal portion is provided with a C-shaped bayonet. The notch of the C-shaped bayonet is used to avoid the syringe plunger, and the lower end face of the C-shaped bayonet is used to clamp the tail of the syringe plunger.

[0033] Compared with the prior art, the present invention has at least the following beneficial effects:

[0034] By incorporating a first and a second engaging assembly, including a fixing part and a rotating engaging part, the syringe sleeve and syringe plunger are respectively limited by rotating engagement and pressing engagement, thus facilitating the limiting and fixing of the syringe sleeve and syringe plunger. Furthermore, the mounting groove formed between the fixing part and the rotating engaging part allows for dual limiting of the outer wall of the syringe sleeve and the skirt at the bottom end of the syringe sleeve, achieving a rigid, all-around enclosure of the syringe sleeve. Compared to existing technologies using partial contact or single-point locking, this effectively prevents radial displacement or axial movement of the syringe sleeve due to the high-speed movement of the syringe plunger, ensuring stable input and output of liquid during aspiration and propulsion. This achieves the goal of facilitating the limiting and fixing of the syringe sleeve and syringe plunger while effectively improving the stability of the liquid during aspiration or propulsion. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the syringe mounting structure in one embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the first engaging component in the syringe mounting structure according to one embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the second engaging component in the syringe mounting structure according to one embodiment of the present invention;

[0038] Figure 4 This is a half-sectional view of the syringe mounting structure in one embodiment of the present invention when the second engaging component is combined with the syringe plunger.

[0039] Figure 5 This is a cross-sectional view of the second engaging component in the syringe mounting structure of one embodiment of the present invention, when it is combined with the syringe plunger.

[0040] Icon labels:

[0041] 1. Substrate;

[0042] 2. First engaging assembly; 21. Fixing part; 211. First threaded connection groove; 22. Rotary engaging part; 23. First positioning bolt;

[0043] 3. Second engaging assembly; 31. Sliding bearing part; 311. Second threaded connection groove; 32. Flip-on clamping part; 321. Vertical part; 322. Horizontal part; 33. Second positioning bolt;

[0044] 4. First semicircular groove; 41. Second semicircular groove;

[0045] 5. First guide boss;

[0046] 6. First guide groove;

[0047] 7. Second guide boss;

[0048] 8. Second guide groove;

[0049] 9. C-type bayonet. Detailed Implementation

[0050] The syringe mounting structure of this utility model will now be described in more detail with reference to the schematic diagrams, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the utility model.

[0051] Furthermore, based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combination of different implementation methods without creating technical contradictions. Such variations should all be considered to fall within the protection scope of this patent.

[0052] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0053] like Figures 1 to 3 As shown in the figure, this utility model embodiment proposes a syringe mounting structure, including: a base plate 1, a first engaging component 2 and a second engaging component 3.

[0054] The first engaging component 2 includes a fixing part 21 and a rotating engaging part 22.

[0055] The fixing part 21 is fixedly disposed on the base plate 1 and is used to provide a positioning reference for the syringe sleeve.

[0056] One end of the rotating engaging part 22 is hinged to the fixed part 21, and the other end rotates around the axis of the hinge shaft to achieve the docking and fitting or separation of the rotating engaging part 22 and the fixed part 21.

[0057] It should be noted that when the rotating engaging part 22 and the fixing part 21 are engaged, they remain relatively fixed and cooperate to form a mounting groove. The mounting groove matches the skirt that surrounds the outer wall of the syringe sleeve and the bottom end of the syringe sleeve. That is, by rotating the rotating engaging part 22, it can cooperate with the fixing part 21 to complete the all-round wrapping of the syringe sleeve, thereby effectively suppressing the radial displacement and axial movement of the syringe sleeve, thus improving the stability of the liquid when it is aspirated or pushed.

[0058] Furthermore, by controlling the engagement or disengagement of the rotating locking part 22 and the fixing part 21, the operator can quickly limit and fix the syringe sleeve, thus facilitating operation.

[0059] The second engaging component 3 is used to engage and fix the syringe plunger. The second engaging component 3 is slidably mounted on the base plate 1 and can move vertically relative to the first engaging component 2, allowing the syringe plunger to reciprocate within the syringe sleeve. By engaging and fixing the syringe plunger with the second engaging component 3, a limiting function is achieved. Since the second engaging component 3 is slidably mounted on the base plate 1 and can move vertically relative to the first engaging component 2, the operator can control the relative movement of the syringe plunger and the syringe sleeve to perform liquid aspiration or pushing actions. This process avoids direct contact with the syringe plunger, effectively improving the stability of the syringe plunger during operation and further enhancing the stability of the liquid during aspiration or pushing actions.

[0060] It should be noted that in this embodiment, the second locking component 3 limits the syringe plunger by snapping and locking, thereby facilitating the locking and fixing of the syringe plunger.

[0061] This device employs a first engaging assembly 2 and a second engaging assembly 3, including a fixing part 21 and a rotating engaging part 22, to achieve limiting of the syringe sleeve and syringe plunger through rotational engaging and pressing engaging methods, respectively, thus facilitating the limiting and fixing of the syringe sleeve and syringe plunger. Furthermore, the mounting groove formed between the fixing part 21 and the rotating engaging part 22 allows for dual limiting of the outer wall of the syringe sleeve and the skirt at the bottom end of the syringe sleeve, achieving a rigid, all-around enclosure of the syringe sleeve. Compared to existing technologies using partial contact or single-point locking, this effectively prevents radial displacement or axial movement of the syringe sleeve due to the high-speed movement of the syringe plunger, ensuring stable input and output of liquid during aspiration and propulsion. This achieves the goal of facilitating the limiting and fixing of the syringe sleeve and syringe plunger while effectively improving the stability of the liquid during aspiration or propulsion.

[0062] In this embodiment, the shapes of the fixing part 21 and the rotating engaging part 22 are further defined so that the operator can place the syringe in the mounting groove formed between the fixing part 21 and the rotating engaging part 22 and quickly engage and fix it.

[0063] Specifically, both the fixing part 21 and the rotating engaging part 22 have a first semi-circular groove 4 extending vertically on their mating sides. The cylindrical channel defined by the first semi-circular groove 4 of the fixing part 21 and the first semi-circular groove 4 of the rotating engaging part 22 matches the outer wall of the syringe sleeve. That is, the cylindrical channel wraps around the outer wall of the syringe sleeve to initially fix the syringe sleeve axially and radially.

[0064] In addition, a second semicircular groove 41 is provided in the middle of the first semicircular groove 4, which is coaxially arranged with the first semicircular groove 4. The annular groove defined by the second semicircular groove 41 of the fixing part 21 and the second semicircular groove 41 of the rotating engaging part 22 matches the skirt that is arranged around the bottom end of the syringe sleeve.

[0065] The two second semicircular grooves 41 together form an annular groove that matches the skirt at the bottom of the syringe sleeve. When the rotating locking part 22 is in contact with the fixing part 21, the skirt can be embedded in the annular groove. The inner wall of the annular groove provides a circumferential limit on the skirt, thereby achieving axial fixation and radial positioning of the syringe sleeve. This effectively prevents axial movement or radial displacement of the syringe sleeve, ensuring that the syringe sleeve is stable and without displacement during the reciprocating motion of the plunger, and providing reliable mechanical support for the accurate aspiration and injection of the drug.

[0066] When the rotating engaging part 22 is engaged with the fixing part 21, the two first semicircular grooves 4 and the two second semicircular grooves 41 together form the mounting groove.

[0067] It should also be noted that there are two second engaging components 3. The mounting slots of the first engaging component 2 and the second engaging components 3 are respectively positioned one-to-one, and the two second engaging components 3 are located directly below the two mounting slots. By providing two second engaging components 3 that correspond one-to-one with the mounting slots of the first engaging component 2, it is convenient for operators to install the two syringes together. Thus, the uninterrupted input and output of liquid can be achieved through the coordinated operation of the two syringes, which is beneficial for applications in actual nanomedicine preparation processes.

[0068] In a further embodiment, to improve the stability of the rotating engagement portion 22 and the fixing portion 21 when they are deflected and fitted, a first guide boss 5 and a first guide groove 6 are further provided.

[0069] Specifically, the fixing part 21 and the rotating engaging part 22 are respectively provided with a first guide boss 5 and a first guide groove 6 on the side where they are in contact. The first guide boss 5 and the first guide groove 6 cooperate with each other for the alignment and engagement of the fixing part 21 and the rotating engaging part 22. Through the engagement of the first guide boss 5 and the first guide groove 6, the rotating engaging part 22 can be guided to quickly align and engage with the fixing part 21 around the hinge axis during installation, effectively shortening the time required for the two to engage. Furthermore, when the two are engaged, they can form an embedded mechanical interlock structure, which can effectively limit the relative sliding of the rotating engaging part 22 and the fixing part 21 after they are in contact, thereby improving the stability of the mounting groove in clamping the outer wall and skirt of the syringe sleeve and avoiding the loosening of the syringe sleeve due to component misalignment.

[0070] In this embodiment, the first guide boss 5 is disposed on the rotating engagement part 22, and the first guide groove 6 is disposed on the fixing part 21.

[0071] In a further embodiment, the number of the first guide boss 5 and the first guide groove 6 is further limited.

[0072] Specifically, there are three of the first guide boss 5 and the first guide groove 6.

[0073] Among them, the two first semi-circular grooves 4 are located between two adjacent first guide protrusions 5 or two adjacent first guide grooves 6.

[0074] It should also be noted that the length of the first guide boss 5 or the first guide groove 6 located between two adjacent first semicircular grooves 4 in the horizontal direction is greater than the length of the other two first guide bosses 5 or the first guide grooves 6 in the horizontal direction, so that there is enough gap between the two syringes to avoid interference between the two syringes during installation or operation, and to improve the stability of the device during operation.

[0075] Preferably, in order to further improve the stability of the rotating engagement part 22 after it is fitted with the fixing part 21, a first positioning bolt 23 is also provided.

[0076] Specifically, the first engaging component 2 also includes a first positioning bolt 23.

[0077] The first positioning bolt 23 is threaded through the rotating engaging portion 22, and the side of the fixing portion 21 that is in contact with the rotating engaging portion 22 is provided with a first threaded connecting groove 211 that matches the first positioning bolt 23. The threaded connection between the first positioning bolt 23 and the first threaded connecting groove 211 stably connects the rotating engaging portion 22 and the fixing portion 21 together, further ensuring the engaging and positioning effect of the mounting groove on the syringe sleeve and preventing any loosening.

[0078] like Figures 3 to 5 As shown, in other embodiments, a specific second engaging component 3 is also proposed to facilitate connection with the syringe plunger and maintain relative fixation.

[0079] Specifically, the second engaging component 3 includes a sliding bearing portion 31 and a flipping and clamping portion 32.

[0080] The sliding support part 31 is slidably mounted on the base plate 1 to support the end of the syringe plunger. It works in conjunction with the flip-and-press part 32 to connect the syringe plunger to the end face of the sliding support part 31. This allows the reciprocating movement of the syringe plunger to be performed by controlling the sliding of the sliding support part 31. This eliminates the need for the drive component to be connected to the syringe plunger, effectively improving the stability of the syringe plunger during reciprocating movement. Correspondingly, it also improves the stability of the liquid when it is being aspirated or pushed.

[0081] Specifically, one end of the flip-fitting clamping part 32 is hinged to the outer wall of the sliding bearing part 31 away from the substrate 1, and the other end can be flipped to the upper surface of the sliding bearing part 31 and remain relatively fixed.

[0082] When the other end of the flip-fitting clamping part 32 flips to the upper end face of the sliding support part 31, a positioning clamping gap is formed between the two ends for clamping and limiting the syringe plunger. This ensures that the tail end of the syringe plunger can be clamped within the positioning clamping gap formed between the upper end face of the sliding support part 31 and the flip-fitting clamping part 32, thereby achieving the purpose of clamping and fixing the syringe plunger. In other words, during installation, it is only necessary to place the syringe plunger on the upper end face of the sliding support part 31 and then control the flip-fitting clamping part 32 to flip and clamp, achieving convenient operation.

[0083] In other embodiments, the sliding support portion 31 has a second guide boss 7 and a second guide groove 8 respectively on the side facing away from the substrate 1 and the inner side of the flip-fitting part 32. The second guide boss 7 and the second guide groove 8 cooperate with each other for the alignment and engagement of the sliding support portion 31 and the flip-fitting part 32. By providing the second guide boss 7 and the second guide groove 8, the stability of the sliding support portion 31 and the flip-fitting part 32 when they are in contact can be effectively improved, and the relative movement between the two can be shortened accordingly, thereby reducing the time required to clamp and position the syringe plunger and further improving the installation speed.

[0084] In addition, the second engaging assembly 3 also includes a second positioning bolt 33.

[0085] The second positioning bolt 33 is threaded through the flip-locking part 32, and the sliding bearing part 31 is provided with a second threaded connecting groove 311 that matches the second positioning bolt 33 on the side away from the base plate 1. That is, by setting the second positioning bolt 33 and the second threaded connecting groove 311, the flip-locking part 32 and the sliding bearing part 31 are finally locked, ensuring that the syringe plunger will not come off due to the shaking of the positioning clamping gap.

[0086] like Figure 5 As shown, in this embodiment, the flip-fastening part 32 is configured as an L-shaped structure formed in one piece.

[0087] The flip-fastening part 32 includes a vertical part 321 and a horizontal part 322.

[0088] The second guide boss 7 is disposed on the side of the vertical portion 321 facing the sliding support portion 31, and the second guide groove 8 is disposed on the side of the sliding support portion 31 away from the substrate 1, so as to improve the stability of the sliding support portion 31 when it is flipped and attached to the flipping clamping portion 32.

[0089] It should be noted that the horizontal portion 322 is provided with a C-shaped latch 9. The notch of the C-shaped latch 9 is used to avoid the syringe plunger, and the lower end face of the C-shaped latch 9 is used to clamp the tail of the syringe plunger. That is, by providing the C-shaped latch 9, the flip-clamping part 32 can avoid the syringe plunger when it deflects towards the sliding support part 31, thus preventing jamming. Furthermore, the lower end face of the C-shaped latch 9 can effectively clamp and fix the syringe plunger within the gap formed by the lower end face of the C-shaped latch 9 and the upper end face of the sliding support part 31.

[0090] In other embodiments, a groove matching the bottom end of the syringe plunger can be provided on the upper end face of the sliding bearing portion 31 to initially limit the syringe plunger in the horizontal direction, preventing the need for multiple installations due to the swing of the syringe plunger during installation, thereby further improving the installation speed.

[0091] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A syringe mounting structure, characterized in that, include: Substrate (1), first engagement assembly (2) and second engagement assembly (3); The first engaging assembly (2) includes a fixing part (21) and a rotating engaging part (22); The fixing part (21) is fixedly disposed on the substrate (1); One end of the rotating engaging part (22) is hinged to the fixed part (21), and the other end rotates around the axis of the hinge shaft to achieve the docking and fitting or separation of the rotating engaging part (22) and the fixed part (21); When the rotating engaging part (22) and the fixing part (21) are in contact, they can remain relatively fixed and cooperate to form an installation groove. The installation groove matches the skirt that is arranged around the outer wall of the syringe sleeve and the bottom end of the syringe sleeve. The second engaging component (3) is used to engage and fix the syringe plunger, and the second engaging component (3) is slidably mounted on the base plate (1) to move in the vertical direction relative to the first engaging component (2), so that the syringe plunger can reciprocate within the syringe sleeve.

2. The syringe mounting structure as described in claim 1, characterized in that, The fixed part (21) and the rotating engaging part (22) are both provided with a first semi-circular groove (4) that runs through from the vertical direction on the side where they fit together. The cylindrical channel defined by the first semi-circular groove (4) of the fixed part (21) and the first semi-circular groove (4) of the rotating engaging part (22) matches the outer wall of the syringe sleeve. The middle part of the first semicircular groove (4) is provided with a second semicircular groove (41) that is coaxial with the first semicircular groove (4). The annular groove defined by the second semicircular groove (41) of the fixing part (21) and the second semicircular groove (41) of the rotating engaging part (22) matches the skirt that is arranged around the bottom end of the syringe sleeve. When the rotating engaging part (22) is engaged with the fixing part (21), the two first semicircular grooves (4) and the two second semicircular grooves (41) together form the mounting groove.

3. The syringe mounting structure as described in claim 2, characterized in that, There are two second locking components (3). The mounting slots of the first locking component (2) and the second locking components (3) are respectively located directly below the two mounting slots.

4. The syringe mounting structure as described in claim 3, characterized in that, The fixing part (21) and the rotating engaging part (22) are respectively provided with a first guide boss (5) and a first guide groove (6) on the side that are in contact with each other. The first guide boss (5) and the first guide groove (6) cooperate with each other for the alignment and engagement of the fixing part (21) and the rotating engaging part (22). The first guide boss (5) and the first guide groove (6) are provided in three parts; The two first semicircular grooves (4) are located between two adjacent first guide bosses (5) or two adjacent first guide grooves (6).

5. The syringe mounting structure as described in claim 4, characterized in that, The length of the first guide boss (5) or the first guide groove (6) located between two adjacent first semicircular grooves (4) in the horizontal direction is greater than the length of the other two first guide bosses (5) or the first guide grooves (6) in the horizontal direction.

6. The syringe mounting structure as described in claim 1, characterized in that, The first engaging assembly (2) further includes a first positioning bolt (23); The first positioning bolt (23) is threaded through the rotating engagement part (22), and the side of the fixing part (21) that is in contact with the rotating engagement part (22) is provided with a first threaded connection groove (211) that matches the first positioning bolt (23).

7. The syringe mounting structure as described in claim 1, characterized in that, The second engaging assembly (3) includes a sliding bearing portion (31) and a flipping clamping portion (32); The sliding support part (31) is slidably mounted on the base plate (1); One end of the flip-fitting part (32) is hinged to the outer wall of the sliding support part (31) away from the substrate (1), and the other end can be flipped to the upper end surface of the sliding support part (31) and remain relatively fixed. When the other end of the flip-pressing part (32) is flipped to the upper end face of the sliding support part (31), a positioning clamping gap can be formed between it and the upper end face of the sliding support part (31) for pressing and limiting the syringe plunger.

8. The syringe mounting structure as described in claim 7, characterized in that, The sliding support part (31) is provided with a second guide boss (7) and a second guide groove (8) on the side facing away from the substrate (1) and the inner side of the flip-fastening part (32), respectively. The second guide boss (7) and the second guide groove (8) cooperate with each other for the alignment and engagement of the sliding support part (31) and the flip-fastening part (32).

9. The syringe mounting structure as described in claim 7, characterized in that, The second engaging assembly (3) also includes a second positioning bolt (33); The second positioning bolt (33) is threaded through the flip-clamping part (32), and the sliding bearing part (31) is provided with a second threaded connection groove (311) that matches the second positioning bolt (33) on the side away from the base plate (1).

10. The syringe mounting structure as described in claim 8, characterized in that, The flip-fastening part (32) is configured as an L-shaped structure formed by one-piece processing; The flip-up clamping part (32) includes a vertical part (321) and a horizontal part (322); The second guide boss (7) is disposed on the side of the vertical portion (321) facing the sliding bearing portion (31), and the second guide groove (8) is disposed on the side of the sliding bearing portion (31) away from the substrate (1); The horizontal portion (322) is provided with a C-shaped bayonet (9), the notch of the C-shaped bayonet (9) is used to avoid the syringe plunger, and the lower end face of the C-shaped bayonet (9) is used to press the tail of the syringe plunger.

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