Power-off anti-falling device and chemiluminescence immunoassay analyzer

Abstract

The utility model provides a power-off anti-falling device and a chemiluminescence immunoassay analyzer, and the power-off anti-falling device comprises a first brake component, a second brake component and a power supply component, the second braking part comprises a pawl and an electromagnet, the pawl is matched with the ratchet, the electromagnet pulls the pawl to be separated from the ratchet in a power-on state, after the electromagnet is powered off, the electromagnet loses magnetic force, and the pawl is reset and makes contact with the ratchet; and when the pawl is in contact with the ratchet, the ratchet is opposite to the pawl. When the equipment is suddenly powered off, the electromagnet loses magnetic force, so that the pawl is separated from the electromagnet, and the pawl naturally resets and is clamped on the ratchet to form a dead point. After the pawl and the ratchet form a dead point, only the first brake piece and the second brake piece can move in one direction, and cannot move in the other direction. By means of the power-off anti-falling device, the purpose of self-locking and anti-falling of components of the equipment after the medical equipment is powered off can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of safety protection of medical devices, in particular to a power-off anti-falling device and a chemiluminescence immunoassay analyzer. Background Art

[0002] In components such as the sampling needle, reagent needle, and gripper of a chemiluminescence immunoassay analyzer, the vertical movement direction is usually driven by structures such as a stepper motor, a synchronous belt, a synchronous pulley, and a linear guide rail. There is a phenomenon that it cannot be self-locked after power-off, and the components on the slider fall due to gravity. Currently, a tension spring is used, with one end connected to the slider and the other end connected to a fixed base, so as to balance the gravity of the slider and prevent the slider from falling after power-off. As the stretching length of the spring increases, the pulling force gradually increases. When the stroke is relatively long or the weight of the slider is relatively large, the pulling force provided by the spring at the initial and final positions of the stroke changes greatly, and the pulling force of the spring surges at the final position of the stroke, increasing the resistance to the motor and even normal operation of the stepper motor. Secondly, when the spring reaches static equilibrium with the slider, it cannot truly self-lock and prevent falling. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a power-off anti-falling device and a chemiluminescence immunoassay analyzer to achieve the purpose of self-locking and anti-falling of the components of the medical device after power-off.

[0004] To this end, according to a first aspect, in one embodiment, a power-off anti-falling device is provided, including:

[0005] A first braking member having ratchet teeth; and

[0006] A second braking member including a ratchet pawl and an electromagnet, the ratchet pawl being adapted to the ratchet teeth, the electromagnet pulling the ratchet pawl away from the ratchet teeth in the energized state, and when the electromagnet is powered off, the electromagnet loses magnetic force, and the ratchet pawl resets and contacts the ratchet teeth;

[0007] When the ratchet pawl contacts the ratchet teeth, the ratchet teeth move unidirectionally relative to the ratchet pawl.

[0008] As a further optional solution of the power-off anti-falling device, the first braking member is a ratchet wheel having the ratchet teeth.

[0009] As a further optional solution of the power-off anti-falling device, it further includes a power output shaft rotatably arranged, and the ratchet wheel is coaxially arranged with the power output shaft.

[0010] As a further alternative embodiment of the power-off anti-falling device, it further includes at least two first mounting members. At least two first mounting holes 230 are provided on the ratchet wheel. The first mounting members penetrate through the first mounting holes 230 and are connected to the power output shaft 30 to mount the ratchet wheel on the power output shaft 30.

[0011] As a further alternative embodiment of the power-off anti-falling device, the first braking member is strip-shaped, and the ratchet teeth are located on one side of the first braking member.

[0012] As a further alternative embodiment of the power-off anti-falling device, the second braking member further includes an elastic member, and the elastic member is connected to the pawl to facilitate the reset of the pawl in the event of a power failure.

[0013] As a further alternative embodiment of the power-off anti-falling device, the second braking member further includes a mounting seat. The pawl is rotatably connected to the mounting seat. The pawl 210 includes a first end, a second end, and a rotating portion connecting the first end and the second end. The rotating portion is rotatably connected to the mounting seat 250. One ends of the electromagnet 220 and the elastic member 240 are respectively fixed on the mounting seat 250. The first end is used to contact the ratchet teeth 110, and the second end is used to connect with the elastic member.

[0014] As a further alternative embodiment of the power-off anti-falling device, the pawl 210 further includes a magnetic attraction portion. The magnetic attraction portion is rotatably connected to the second end, and the magnetic attraction portion can be attracted by the electromagnet.

[0015] As a further alternative embodiment of the power-off anti-falling device, it further includes at least two second mounting members. At least two second mounting holes 2510 are provided on the mounting seat 250. The second mounting members penetrate through the second mounting holes 2510 to fix the mounting seat 250 at the required fixed position.

[0016] In a second aspect, the present invention provides a chemiluminescence immunoassay analyzer, including a sampling mechanism, a reagent mechanism, a gripper assembly, and the power-off anti-falling device according to any one of the first aspect. The reagent mechanism is used to fix reagent samples. The sampling mechanism is used to collect the sample information. The gripper assembly is used to grip or move the sample. The power-off anti-falling device is used to prevent the reagent samples from falling after a power failure of the sampling mechanism, the reagent mechanism, and the gripper assembly.

[0017] Implementing the embodiments of the present invention will have the following beneficial effects:

[0018] According to the power-off anti-falling device in the above embodiments, since the first braking member has ratchet teeth, the second braking member has a ratchet pawl and an electromagnet. In the powered state, the electromagnet has magnetism to attract the ratchet pawl, so that the ratchet pawl is adsorbed on the electromagnet and separated from the ratchet teeth. When the device suddenly loses power, the electromagnet loses its magnetic force, so that the ratchet pawl is separated from the electromagnet, and the ratchet pawl naturally resets and engages with the ratchet teeth to form a dead point. After the ratchet pawl and the ratchet teeth form a dead point, only the first braking member and the second braking member can move in one direction and cannot move in the other direction (usually the direction of gravity). Implementing the power-off anti-falling device in the present invention can achieve the purpose of self-locking and anti-falling of the components of the medical device after power-off.

[0019] According to the chemiluminescence immunoassay analyzer in the above embodiments, the reagent mechanism fixes or moves the reagent sample, the sampling mechanism collects sample information, and the jaw assembly can be used to transfer the reagent sample. The power-off anti-falling device is used in the sampling mechanism, the reagent mechanism and the jaw assembly, so even if the power suddenly fails, it will not cause the sampling mechanism, the reagent mechanism and the jaw assembly to lose power and cause the reagent sample to fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Among them:

[0022] Figure 1 Shows a schematic diagram of the overall structure of the power-off anti-falling device provided by the embodiment of the present invention;

[0023] Figure 2 Shows a schematic diagram of the structure of the power-off anti-falling device provided by the embodiment of the present invention in the powered state;

[0024] Figure 3 Shows a schematic diagram of the structure of the power-off anti-falling device provided by the embodiment of the present invention in the power-off state.

[0025] MAIN ELEMENT SYMBOL DESCRIPTION:

[0026] First braking member - 10; Ratchet teeth - 110; Second braking member - 20; Ratchet pawl - 210; Electromagnet - 220; Power output shaft - 30; First mounting hole - 230; Elastic member - 240; Mounting seat - 250; Second mounting hole - 2510; First end - 2110, Second end - 2120; Rotating part - 2130; Magnetic attracting part - 2140. Detailed implementation mode

[0027] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] In an embodiment of the present utility model, a power-off anti-falling device and a chemiluminescent immunoassay analyzer are provided. In a first aspect, please refer to Figures 1 - 3 , the power-off anti-falling device includes a first braking member 10 and a second braking member 20. The first braking member 10 has ratchet teeth 110; the second braking member 20 includes a ratchet pawl 210 and an electromagnet 220. The ratchet pawl 210 is adapted to the ratchet teeth 110. The electromagnet 220 pulls the ratchet pawl 210 away from the ratchet teeth 110 in the energized state. When the electromagnet is powered off, the electromagnet 220 loses its magnetic force, and the ratchet pawl 210 resets and contacts the ratchet teeth 110;

[0031] When the ratchet pawl 210 contacts the ratchet teeth 110, the ratchet teeth 110 move unidirectionally relative to the ratchet pawl 210.

[0032] According to the power-off anti-falling device in the above embodiments, since the first braking member 10 has ratchet teeth 110, the second braking member 20 has a ratchet pawl 210 and an electromagnet 220. In the powered-on state, the electromagnet 220 has magnetism to attract the ratchet pawl 210, so that the ratchet pawl 210 is adsorbed on the electromagnet 220 and separated from the ratchet teeth 110. When the device suddenly loses power, the electromagnet 220 loses its magnetic force, so that the ratchet pawl 210 is separated from the electromagnet 220, and the ratchet pawl 210 naturally resets and is clamped on the ratchet teeth 110 to form a dead point. After the ratchet pawl 210 and the ratchet teeth 110 form a dead point, only the first braking member 10 and the second braking member can move in one direction and cannot move in the other direction (usually the direction of gravity). Implementing the power-off anti-falling device in the present utility model can achieve the purpose of self-locking and anti-falling of the components of the medical device after power-off.

[0033] Generally speaking, when the electromagnet 220 loses its magnetic force, the ratchet pawl 210 will reset under the influence of gravity and thus come into contact with the ratchet teeth 110. For example, the electromagnet 220 is above the ratchet pawl 210, and when powered on, the electromagnet 220 attracts the ratchet pawl 210 to separate from the ratchet teeth 110. When power is cut off, under the influence of gravity, the ratchet pawl 210 naturally drops and gets stuck on the ratchet teeth 110. Thus, the first braking member 10 and the second braking member 20 are locked in the direction of gravity and cannot move relative to each other.

[0034] It should be noted that the relative movement here is translation or rotation.

[0035] In some specific embodiments, the first braking member 10 is a ratchet wheel with ratchet teeth 110.

[0036] A ratchet wheel is defined as a gear with a rigid tooth-shaped surface or a friction surface on its outer or inner edge, and is an important component of a ratchet mechanism. It is pushed by the ratchet pawl 210 to make a step-by-step movement. The characteristic of this meshing movement is that the ratchet wheel can only rotate in one direction and cannot reverse.

[0037] In this embodiment, the first braking member 10 is a ratchet wheel with ratchet teeth 110. In this embodiment, the ratchet wheel can be fixed or rotatable.

[0038] In the first embodiment, in the lifting mechanism, the ratchet wheel can be rotatably arranged relative to the ratchet pawl 210. The positions of the first braking member 10 and the second braking member 20 remain relatively unchanged, and only the rotation of the ratchet wheel is linked with the lifting mechanism. Specifically, the ratchet wheel can be linked with the output gear of the motor or the reduction gear therein. When power is not cut off, the ratchet wheel can rotate forward and backward. When power is suddenly cut off, the ratchet pawl 210 contacts the ratchet wheel to prevent the ratchet wheel from rotating forward or backward. The direction in which the ratchet pawl 210 prevents the rotation of the ratchet wheel corresponds to the direction in which the lifting mechanism descends.

[0039] Embodiment 2: In the lifting mechanism, the ratchet cannot rotate, but the ratchet moves up and down together with the lifting component in the lifting mechanism, while the pawl 210 is fixed in the fixed component of the lifting mechanism. Multiple pawls 210 can be arranged along the moving direction of the lifting component. When the power supply of the lifting mechanism is suddenly cut off, at least one pawl 210 will come into contact with the ratchet, thereby preventing the lifting mechanism from descending.

[0040] Embodiment 3: It is exactly the opposite of Embodiment 2. Among them, the ratchet still cannot rotate. Multiple ratchets are arranged along the length of the lifting component and are fixedly installed in the fixed component of the lifting mechanism. One or more pawls 210 are provided and are arranged in the lifting component of the lifting mechanism. When the power supply is suddenly cut off, at least one pawl 210 will come into contact with the ratchet, thereby preventing the lifting mechanism from descending.

[0041] In some specific embodiments, it further includes a power output shaft 30 rotatably arranged, and the ratchet is coaxially arranged with the power output shaft 30.

[0042] In this embodiment, corresponding to the technical solution in Embodiment 1, the ratchet is coaxially arranged with the power output shaft 30, which is the simplest solution to link the ratchet with the power output end.

[0043] In some specific embodiments, it further includes at least two first mounting parts (not shown in the figure). At least two first mounting holes 230 are provided on the ratchet. The first mounting parts penetrate through the first mounting holes 230 and are connected to the power output shaft 30 to mount the ratchet on the power output shaft 30.

[0044] In this embodiment, at least two first mounting holes 230 on the ratchet form a structure similar to a flange mounting hole. A flange, also called a flange plate or a flange. A flange is a part used for connecting shafts to each other and is used for connecting pipe ends; it is also used for connecting two devices, such as a reducer flange. A flange connection or a flange joint refers to a detachable connection formed by connecting a flange, a gasket, and bolts as a set of combined sealing structures. A pipe flange refers to a flange used for piping in a piping device, and when used on a device, it refers to the inlet and outlet flanges of the device. There are holes on the flange, and bolts are used to tightly connect the two flanges. A gasket is used for sealing between the flanges. Flanges are divided into threaded connection (threaded connection) flanges, welded flanges, and clamp flanges.

[0045] Among them, the first mounting part is usually a bolt.

[0046] In some specific embodiments, the first braking part 10 is in a long strip shape, and the ratchet teeth 110 are located on one side of the first braking part 10.

[0047] Embodiment 4. The second braking member 20 is usually fixed, that is, generally arranged on the fixed component of the lifting mechanism. And the first braking member 10 is generally fixedly arranged on the lifting component of the lifting mechanism. When power is suddenly cut off, the pawl 210 on the second braking member 20 contacts one of the ratchet teeth 110, thereby braking the lifting mechanism.

[0048] Of course, vice versa. That is, the first braking member 10 is fixed in the fixed component of the lifting component, and the second braking member 20 is fixedly arranged on the lifting component of the lifting mechanism. As long as the technical solution for preventing falling when power is cut off can be achieved, it belongs to the protection scope of the present utility model.

[0049] In some specific embodiments, the second braking member 20 further includes an elastic member 240, and the elastic member 240 is connected to the pawl 210 to facilitate the reset of the pawl 210 in the case of power failure.

[0050] In general, relying on the self-gravity of the pawl 210 can actually also achieve contact with the ratchet tooth 110 after power is cut off. In order to ensure that the pawl 210 can contact the ratchet tooth 110, and also to ensure that the pawl 210 can quickly move to contact the ratchet tooth 110 after power is cut off. The elastic member 240 can enable the pawl 210 to quickly reset and can achieve the effect of preventing falling at the first moment of power failure.

[0051] In some specific embodiments, the elastic member 240 is a spring.

[0052] A spring is a mechanical part that uses elasticity to work. A part made of elastic material deforms under the action of an external force and returns to its original state after the external force is removed. Also called "spring". Generally made of spring steel. The types of springs are complex and diverse. Classified by shape, there are mainly helical springs, volute springs, leaf springs, special-shaped springs, etc. Specifically, the spring in this embodiment can be a compression spring or a tension spring.

[0053] In some specific embodiments, the second braking member 20 further includes a mounting seat 250. The pawl 210 includes a first end 2110 and a second end 2120, and a rotating portion 2130 connecting the first end 2110 and the second end 2120; the rotating portion 2130 is rotatably connected to the mounting seat 250. One ends of the electromagnet 220 and the elastic member 240 are respectively fixed on the mounting seat 250. The first end 2110 is used to contact the ratchet tooth 110, and the second end 2120 is used to connect to the elastic member 240.

[0054] In this embodiment, integrating the second braking member 20 into the mounting seat 250 can make the second braking member 20 modular, and it can be quickly installed as long as it is adapted to the first braking member 10 during installation.

[0055] In some specific embodiments, the pawl 210 further includes a magnetic attraction portion 2140. The magnetic attraction portion 2140 is rotatably connected to the second end 2120, and the magnetic attraction portion 2140 can be attracted by the electromagnet 220.

[0056] Since the pawl 210 is rotatably mounted on the mounting base 250, and the attraction of the electromagnet 220 to the pawl 210 is linear. Therefore, setting the magnetic attraction portion 2140 can make the attraction of the electromagnet 220 to the pawl 210 firm.

[0057] Generally speaking, the portion of the magnetic attraction portion 2140 corresponding to the electromagnet 220 is flat, so as to increase the contact area with the electromagnet 220.

[0058] In some specific embodiments, it further includes at least two second mounting members (not shown in the figure). At least two second mounting holes 2510 are provided on the mounting base 250, and the second mounting members penetrate through the second mounting holes 2510 to fix the mounting base 250 at the position to be fixed.

[0059] In this embodiment, at least two second mounting holes 2510 on the mounting base 250 are fixed on the lifting mechanism through the second mounting members, so as to quickly install the power-off anti-falling device in the present invention. The second mounting member can be a bolt or a pin.

[0060] In a second aspect, the chemiluminescence immunoassay analyzer includes a sampling mechanism, a reagent mechanism, a gripper assembly, and the power-off anti-falling device according to any one of the first aspect; the reagent mechanism is used to fix the reagent sample, the sampling mechanism is used to collect sample information, the gripper assembly is used to grip or move the sample, and the power-off anti-falling device is used to prevent the reagent sample from falling after the sampling mechanism, the reagent mechanism, and the gripper assembly lose power.

[0061] According to the chemiluminescence immunoassay analyzer in the above embodiments, the reagent mechanism fixes or moves the reagent sample, the sampling mechanism collects sample information, and the gripper assembly can be used to transfer the reagent sample. And the power-off anti-falling device is used in the sampling mechanism, the reagent mechanism, and the gripper assembly, so even if the power suddenly cuts off, it will not cause the sampling mechanism, the reagent mechanism, and the gripper assembly to lose power and cause the reagent sample to fall.

[0062] It should be noted that the lifting mechanism can be installed in any one of the sampling mechanism, the reagent mechanism, and the gripper assembly. The lifting mechanism is not necessarily for lifting, and it can also be for lateral or oblique movement.

[0063] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features do not conflict, they should all be considered as the scope described in this specification.

[0064] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A power-off anti-fall device, characterized in that: include: A first brake member having ratchet teeth; as well as A second brake member includes a pawl and an electromagnet, wherein the pawl is matched with the ratchet, and the electromagnet pulls the pawl and the ratchet apart when powered on. When the electromagnet is powered off, the electromagnet loses its magnetic force, and the pawl is reset and contacts the ratchet; When the pawl is in contact with the ratchet tooth, the ratchet tooth moves unidirectionally relative to the pawl.

2. A power-off anti-falling device as claimed in claim 1, characterized in that: The first braking member is a ratchet wheel having the ratchet teeth.

3. A power-off anti-falling device as claimed in claim 2, characterized in that: It also includes a rotatable power output shaft, and the ratchet is coaxially arranged with the power output shaft.

4. A power-off anti-falling device as claimed in claim 3, characterized in that: It also includes at least two first mounting members, the ratchet is provided with at least two first mounting holes, the first mounting member passes through the first mounting holes and is connected to the power output shaft so as to mount the ratchet on the power output shaft.

5. A power-off anti-falling device as claimed in claim 1, characterized in that: The first braking member is in the shape of an elongated strip, and the ratchet is located on one side of the first braking member.

6. A power-off anti-falling device as claimed in claim 1, characterized in that: The second brake member further comprises an elastic member, and the elastic member is connected to the pawl so as to reset the pawl in case of power failure.

7. A power-off anti-falling device as claimed in claim 6, characterized in that: The second brake member also includes a mounting seat, the pawl includes a first end, a second end, and a rotating part connecting the first end and the second end; the rotating part is rotatably connected to the mounting seat, the electromagnet and one end of the elastic member are respectively fixed on the mounting seat, the first end is used to contact the ratchet, and the second end is used to connect with the elastic member.

8. A power-off anti-falling device as claimed in claim 7, characterized in that: The pawl further includes a magnetic attraction portion, which is rotatably connected to the second end and can be attracted by the electromagnet.

9. A power-off anti-falling device as claimed in claim 8, characterized in that: It also includes at least two second mounting members. The mounting seat is provided with at least two second mounting holes. The second mounting members penetrate through the second mounting holes to fix the mounting seat at a desired fixed position.

10. A chemiluminescent immunoassay analyzer, characterized in that: It comprises a sampling mechanism, a reagent mechanism, a clamping jaw assembly and the power-off anti-falling device as described in any one of claims 1 to 9; the reagent mechanism is used to fix the reagent sample, the sampling mechanism is used to collect the sample information, the clamping jaw assembly is used to clamp or move the sample, and the power-off anti-falling device is used to prevent the reagent sample from falling after the sampling mechanism, the reagent mechanism and the clamping jaw assembly are powered off.

Images