Card feeding structure of immunity analyzer

Abstract

The utility model discloses a card feeding structure of an immunoassay analyzer, which belongs to the technical field of immunoassay and detection and comprises a support plate, a slide rail and a power device are arranged on the support plate, a card seat is slidably arranged on the slide rail, the power device comprises a servo motor, a screw rod is connected onto the servo motor and is parallel to the slide rail, and the slide rail is connected with the card seat. The lead screw is sleeved with a movable lead screw sleeve, the lead screw sleeve is fixedly connected with the clamping base, the lead screw sleeve is connected with a buffering chuck, a protruding clamping column is arranged in the center of the buffering chuck, a lead screw hole is formed in the lead screw sleeve, a clamping column groove is formed in the lead screw hole, the clamping column is arranged in the clamping column groove in a sleeved mode, and the clamping column groove is elastically connected with the clamping column through a rubber pad. In the moving process of the card feeding structure, even if eccentric rotation exists in the lead screw, the eccentric rotation is buffered through the rubber pad, the lead screw sleeve is prevented from directly acting on the card seat, the movement of the card seat is only subjected to pushing force instead of the eccentric force of the lead screw, and the card seat is prevented from being blocked in the moving process.

Description

Technical Field

[0001] This utility model relates to the field of immunoassay detection technology, specifically to a card feeding structure for an immunoassay analyzer. Background Technology

[0002] Immunoassay analyzers employ optical detection principles, using an optical system to detect cells, proteins, enzymes, and metabolites in samples. The internal components of an immunoassay analyzer primarily consist of a detection optical system and a card feeding structure located below it. The card feeding structure utilizes a card feeder, driven by a servo motor, which moves movably below the detection optical system. To improve detection stability, the card feeder typically slides along a slide rail, driven by a lead screw connected to the servo motor. However, to ensure effective card feeding outside the analyzer's housing, the slide rail and corresponding lead screw need to be relatively long. Therefore, high coaxiality of the lead screw is crucial during assembly. Due to the rigid connection between the lead screw and the slide rail during rotation, slight misalignment of the lead screw's axis during movement can cause the lead screw to jam or even fail to slide, leading to dry running of the servo motor and affecting its lifespan. Thus, the existing technology not only has high installation requirements and is difficult to install, but also suffers from card feeding device jamming, impacting customer experience and potentially damaging the servo motor. Summary of the Invention

[0003] The purpose of this invention is to solve the problem of card feeding structure in existing immunoassay analyzers being prone to jamming, improve card feeding smoothness, enhance the user experience, and facilitate equipment installation while extending the service motor's lifespan.

[0004] To address this, the present invention provides the following technical solution: a card feeding structure for an immunoassay analyzer, comprising a support plate, a slide rail and a power device on the support plate, a card holder slidably disposed on the slide rail, the power device comprising a servo motor, a lead screw coaxially connected to the power output shaft of the servo motor, the lead screw being parallel to the slide rail, a movable lead screw sleeve fitted on the lead screw, the lead screw sleeve being fixedly connected to the card holder, characterized in that: a buffer chuck is connected to the lead screw sleeve, a protruding card post is provided at the center of the buffer chuck, a lead screw hole is provided on the lead screw sleeve, a recessed card post groove is provided in the lead screw hole, the card post is fitted in the card post groove, and a rubber pad elastically connects the card post groove and the card post. During the movement of the card feeding structure, the card holder and the lead screw sleeve are connected, and the lead screw sleeve and the lead screw are connected by a buffer chuck. Due to the elastic connection of the rubber pad between the buffer chuck and the lead screw sleeve, even if there is eccentric rotation of the lead screw, this eccentric rotation is buffered by the rubber pad, which prevents the lead screw sleeve from acting directly on the card holder, so that the movement of the card holder is only affected by the pushing force and not by the eccentric force of the lead screw.

[0005] Furthermore, the end of the lead screw is provided with a support fixed to the support plate. The support has a fixing hole, and a recessed buffer groove is formed within the fixing hole. A buffer pad is fitted inside the buffer groove, and the end of the lead screw is elastically connected to the support through the buffer pad. Even if the lead screw rotates eccentrically, the buffer pad can effectively absorb the vibration of the lead screw, allowing the rotation of the lead screw to drive the sliding of the chuck more smoothly.

[0006] Furthermore, the cushioning pad is made of rubber.

[0007] Furthermore, the cushioning pad is made of silicone.

[0008] Furthermore, the lead screw sleeve is provided with a plurality of first connecting holes, and the buffer chuck is provided with a plurality of second connecting holes corresponding to the first connecting holes. The first connecting holes and the second connecting holes are locked and fixedly connected by chuck screws.

[0009] Furthermore, the chuck screw includes a straight end and a threaded end, the diameter of the threaded end being smaller than that of the straight end. The diameters of the first connecting hole and the second connecting hole match the diameter of the straight end. When the lead screw sleeve is screwed onto the buffer chuck, because the diameter of the threaded end is smaller than that of the straight end, and the diameters of the first and second connecting holes match the diameter of the straight end, precise positioning is not required between the buffer chuck and the lead screw sleeve, making installation convenient and quick.

[0010] Furthermore, the diameter of the straight rod end is 0.5-2 mm larger than the diameter of the screw end.

[0011] This invention utilizes a buffer chuck on the lead screw sleeve. The buffer connection between the lead screw sleeve and the buffer chuck ensures that during the rotation of the lead screw, the eccentric rotation of the lead screw sleeve is not transmitted to the chuck seat through the lead screw sleeve. This allows the chuck seat to move with the rotation of the lead screw, but during the movement of the chuck seat on the slide rail, it will not be jammed by the eccentric force generated by the slight eccentric rotation of the lead screw.

[0012] This invention utilizes the difference in diameter between the straight end and the screw end of the chuck screw, thereby enabling the connection to be locked without precise alignment during the installation of the buffer chuck on the lead screw sleeve, which facilitates the assembly of the buffer chuck when installing the lead screw sleeve.

[0013] This invention, by employing a buffer connection structure between the lead screw sleeve and the buffer chuck, significantly reduces the coaxiality requirement of the lead screw used in the immunoassay analyzer and greatly reduces the cost of the lead screw material. Attached Figure Description

[0014] Figure 1 This is one of the schematic diagrams of the three-dimensional structure of the card delivery system.

[0015] Figure 2 This is the second schematic diagram of the three-dimensional structure of the card delivery system.

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the power unit.

[0017] Figure 4 This is a three-dimensional exploded view of the power unit.

[0018] Figure 5 This is a schematic diagram of the three-dimensional structure of the buffer chuck facing the lead screw sleeve side.

[0019] Figure 6 This is a schematic diagram of the three-dimensional structure of the lead screw sleeve.

[0020] Figure 7 This is a schematic diagram of the chuck screw's three-dimensional structure.

[0021] Among them: 1-support plate, 2-power unit, 21-servo motor, 22-lead screw, 23-support, 231-fixing hole, 232-buffer pad groove, 24-lead screw sleeve, 241-lead screw hole, 242-clamping post groove, 243-first connecting hole, 25-buffer chuck, 251-clamping post, 252-second connecting hole, 26-chuck screw, 261-straight rod end, 262-screw end, 27-buffer pad, 28-rubber pad, 3-clamping seat, 4-slide rail, 5-reagent card. Detailed Implementation

[0022] The embodiments of this utility model will be briefly described below with reference to the accompanying drawings.

[0023] A card feeding structure for an immunoassay analyzer, refer to 1- Figure 2 The system includes a support plate 1, which is used to connect and fix the card delivery structure inside the immunoassay analyzer. The support plate 1 is equipped with a slide rail 4 and a power unit 2. A card holder 3 is slidably mounted on the slide rail 4, and the card holder 3 is used to position the reagent card 5. The card holder 3 is typically located below the optical detection system of the immunoassay analyzer. During the movement of the card holder 3, the optical detection system of the immunoassay analyzer performs detection by scanning the reagent card 5. Figure 3 and Figure 4 The power unit 2 includes a servo motor 21, and a lead screw 22 is coaxially connected to the power output shaft of the servo motor 21. The lead screw 22 is parallel to the slide rail 4, and a movable lead screw sleeve 24 is fitted on the lead screw 22. The lead screw sleeve 24 is fixedly connected to the chuck 3, and a buffer chuck 25 is connected to the lead screw sleeve 24. (Refer to...) Figure 5 , Figure 6 The buffer chuck 25 has a protruding locking post 251 at its center. A lead screw hole 241 is provided on the lead screw sleeve 24, and a recessed locking post groove 242 is provided inside the lead screw hole 241. The locking post 251 is fitted into the locking post groove 242, and a rubber pad 28 provides an elastic connection between the locking post groove 242 and the locking post 251. During the movement of the feeding structure, the chuck seat 3 and the lead screw sleeve 24 are connected. The lead screw sleeve 24 and the lead screw 22 are connected through the buffer chuck 25. Because the buffer chuck 25 and the lead screw sleeve 24 are connected... The elastic connection between the four slide rails is provided by a rubber pad 28. Even if there is eccentric rotation of the lead screw 22, the eccentric rotation is buffered by the rubber pad 28, which prevents the lead screw sleeve 24 from acting directly on the card holder 3. This ensures that the movement of the card holder 3 is only affected by the pushing force and not by the eccentric force of the lead screw 22. This allows the card holder 3 to move by the rotation of the lead screw 22, and the card holder 3 will not be stuck when moving on the slide rail 4 due to the eccentric force generated by the slight eccentric rotation of the lead screw 22.

[0024] The buffer chuck 25 is fixedly connected to the lead screw sleeve 24 via chuck screws 26. The lead screw sleeve 24 has multiple first connecting holes 243, and the buffer chuck 25 has multiple second connecting holes 252 corresponding to the first connecting holes 243. The first connecting holes 243 and the second connecting holes 252 are locked and fixedly connected by the chuck screws 26. For convenient installation of the buffer chuck 25 on the lead screw sleeve 24, refer to... Figure 7The chuck screw 26 includes a straight rod end 261 and a screw end 262. The diameter of the screw end 262 is smaller than that of the straight rod end 261. The diameters of the first connecting hole 243 and the second connecting hole 252 match the diameter of the straight rod end 261. During installation, the straight rod end 261 of the chuck screw 26 passes through the first connecting hole 243 of the lead screw sleeve 24, and the screw end 262 of the chuck screw 26 connects to the second connecting hole 252 of the buffer chuck 25 and is then tightened by a nut. The diameter of the screw end 262 is smaller than that of the straight rod end 261. 61, and the diameters of the first connecting hole 243 and the second connecting hole 252 are matched with the diameter of the straight rod end 261. That is, the diameter of the second connecting hole 252 is larger than the diameter of the screw end 262, so that even if the center of the first connecting hole 243 and the center of the second connecting hole 252 are not completely aligned, the chuck screw 26 can still easily penetrate and connect together, so that the buffer chuck 25 and the lead screw sleeve 24 do not need to be precisely positioned for installation, making installation convenient and quick.

[0025] In this embodiment, in order to better balance the installation effect between the buffer chuck 25 and the lead screw sleeve 24, the diameter of the straight end 261 of the chuck screw 26 is usually 0.5-2mm larger than the diameter of the screw end 262.

[0026] In this embodiment, the end of the lead screw 22 is provided with a support 23 fixed to the support plate 1. The support 23 has a fixing hole 231 and a recessed buffer groove 232 is provided in the fixing hole 231. A buffer pad 27 is sleeved in the buffer groove 232. The end of the lead screw 22 is elastically connected to the support 23 through the buffer pad 27. During the movement of the card holder 3, even if the lead screw 22 has eccentric rotation, the buffer pad 27 can effectively absorb the vibration of the lead screw 22, so that the rotation of the lead screw 22 can drive the card holder 3 to slide more smoothly. The material of the buffer pad 27 is preferably rubber, especially silicone.

[0027] The above embodiments merely illustrate the implementation of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An immune analyzer card feeding structure, comprising a support plate, a slide rail and a power device are arranged on the support plate, a card seat is slidably arranged on the slide rail, the power device comprises a servo motor, a power output shaft of the servo motor is coaxially connected with a lead screw, the lead screw is parallel to the slide rail, a movable lead screw sleeve is sleeved on the lead screw, and the lead screw sleeve is fixedly connected with the card seat. The lead screw sleeve is connected to a buffer chuck, the buffer chuck has a protruding locking post at its center, the lead screw sleeve has a lead screw hole, the lead screw hole has a recessed locking post groove, the locking post is sleeved in the locking post groove, and the locking post groove and the locking post are elastically connected by a rubber pad.

2. The card feeding structure of an immunoassay analyzer according to claim 1, characterized in that: The end of the lead screw is provided with a support fixed to the support plate. The support has a fixing hole and a recessed buffer groove. A buffer pad is fitted inside the buffer groove. The end of the lead screw is elastically connected to the support through the buffer pad.

3. The card feeding structure of an immunoassay analyzer according to claim 2, characterized in that: The cushioning pad is made of rubber.

4. The card feeding structure of an immunoassay analyzer according to claim 2, characterized in that: The cushioning pad is made of silicone.

5. The card feeding structure of an immunoassay analyzer according to claim 1, characterized in that: The lead screw sleeve has multiple first connection holes, and the buffer chuck has multiple second connection holes corresponding to the first connection holes. The first connection holes and the second connection holes are locked and fixedly connected by chuck screws.

6. The card feeding structure of an immunoassay analyzer according to claim 5, characterized in that: The chuck screw includes a straight rod end and a screw rod end, the diameter of the screw rod end is smaller than that of the straight rod end, and the diameters of the first connecting hole and the second connecting hole are matched with the diameter of the straight rod end.

7. The card feeding structure of an immunoassay analyzer according to claim 6, characterized in that: The diameter of the straight rod end is 0.5-2 mm larger than the diameter of the screw end.

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