CN215728181U - Swing mechanism - Google Patents

Abstract

The utility model provides a swing mechanism which comprises a film bearing device, a connecting rod mechanism and a rotating mechanism, wherein the rotating mechanism is connected with the connecting rod mechanism; and the connecting rod mechanism and the film bearing device are internally provided with revolute pairs, sliding parts are arranged in the revolute pairs, and the sliding parts are sliding bearings made of engineering plastics. The sliding bearings made of special engineering plastics are adopted for the revolute pairs, and the sliding bearings have a series of characteristics of high wear resistance, dust resistance, dirt resistance, lubrication free, maintenance free and the like, so that technicians do not need to maintain regularly, the maintenance cost is reduced, and the service life of the whole device is greatly prolonged; the motor adopted by the utility model can select a conventional stepping motor, and the delicate steering change and the rotating speed control of the swing structure can be realized by carrying out simple unidirectional rotation, so that the production cost of the protein tracing instrument can be greatly increased.

Description

Swing mechanism

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a swing mechanism in a protein tracing instrument.

Background

Immunoblotting (Western Blot, also known as Western blotting) is a method for detecting a certain protein in a complex sample based on the specific binding of antigen-antibody. The method is a new immune biochemical technology developed on the basis of gel electrophoresis and solid-phase immunoassay. Immunoblotting has become a common technique for protein analysis due to its high resolution of gel electrophoresis and high specificity and sensitivity of solid phase immunoassays. Immunoblotting is most commonly used for detection of protein properties, expression and distribution, such as antibody or antigen detection of viruses, quality determination of polypeptide molecules, and qualitative or semi-quantitative detection of tissue antigens.

At present, western blot related tests are usually carried out on an automatic western blot instrument, and the western blot instrument separates proteins to be tested by adopting different electrophoresis methods according to properties, such as molecular weight, molecular size, electric charge, isoelectric point and the like of the proteins; transferring the proteins in the gel to the polyvinylidene fluoride membrane by current; the principle that the antibody and the antigen are specifically combined is utilized, and the target protein is obtained by taking the antibody as a probe. It is noted that the membrane should be "blocked" by the addition of a non-specific protein, such as bovine serum albumin, prior to the addition of the antibody to prevent non-specific binding of the antibody to the membrane.

After the membrane and the reagent are placed into the automatic protein blotting instrument, the membrane and the antigen are subjected to sufficient fusion reaction through the reciprocating swing of a swing mechanism of the instrument, and an accurate detection result is obtained. Because the existence of wabbler mechanism, have the revolute pair in the instrument, these revolute pairs need carry out the high frequency rotation at western blotting appearance working process, in order to promote the rotation smoothness degree, the designer will set up antifriction bearing in these revolute pairs usually because it has the cost low, advantages such as job stabilization. However, the arrangement of the rolling bearing also causes problems, the bearing position needs to be frequently supplemented with lubricating oil or lubricating grease for maintenance, if the lubricating oil or the lubricating grease is not added in time, bearing materials can be peeled off, and the bearing flange scratches can be caused, so that the roller is overheated, extreme local heating can generate metal flow in the bearing, the original material and the geometric structure of the bearing are changed, and finally, the roller is excessively inclined, the retainer is damaged, and the bearing is completely locked. Especially in the high-frequency rotation environment of the western blotting instrument, the regular checking and maintenance of technicians are required, which is very complicated. In addition, traditional rocking mechanism has that required turning moment is big, and rocking mechanism's adaptability is not enough, and the reagent rocks the scheduling problem in the automatic egg white seal mark appearance easily, consequently, needs design a new rocking structure to overcome above not enough.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a rocking mechanism to solve the above problems of the prior art.

In order to achieve the purpose, the technical scheme adopted by the utility model is that the swing mechanism comprises a film bearing device, a link mechanism and a rotating mechanism, wherein the rotating mechanism is connected with the link mechanism, and the link mechanism is connected with the film bearing device;

and the connecting rod mechanism and the film bearing device are internally provided with revolute pairs, sliding parts are arranged in the revolute pairs, and the sliding parts are sliding bearings made of engineering plastics.

Furthermore, the rotating mechanism is a driving part in the swinging mechanism, and the rotating mechanism can drive the film bearing device to move through the connecting rod mechanism, so that the film bearing device swings repeatedly around a rotating pair in the film bearing device.

Furthermore, a revolute pair in the membrane bearing device is a rotary fulcrum, the membrane bearing device can rotate around the rotary fulcrum, the rotary fulcrum is located on the fixed plate, and the membrane bearing device is connected with the fixed plate in a rotating fit mode through the rotary fulcrum.

Further, a fixing seat is arranged on the fixing plate, a supporting lug is arranged on the fixing seat, a through hole is formed in the supporting lug and used for installing a pin, a supporting plate is further sleeved on the pin, a through hole is also formed in the supporting plate, the supporting plate is connected to the film bearing device, and the position of the pin is the film bearing device and the rotating fulcrum of the fixing seat.

Further, the number of the rotation fulcrums is two.

Further, the link mechanism comprises a first connecting structure, a second connecting structure and a third connecting structure; the first connecting structure is connected with the second connecting structure in a rotating matching mode to form a rotating pair, the second connecting structure is connected with the third connecting structure in a rotating matching mode to form a rotating pair, the first connecting structure is connected with the rotating mechanism, and the third connecting structure is connected with the film bearing device.

Further, the first connecting structure is disc-shaped.

Further, the rotating mechanism includes a motor, and when the film bearing manufacturing is in a horizontal state, a line connecting a rotation center of the motor and a center of a revolute pair formed by the second connecting structure and the third connecting structure is in a vertical state.

Further, be equipped with an opto-coupler separation blade on the link mechanism, with it corresponds, swing mechanism still includes an opto-coupler response structure, slewing mechanism includes the motor, along with in the slewing mechanism the motor drives the link mechanism motion, the motor is the round of revolving, link mechanism is last the opto-coupler separation blade is just once through opto-coupler response structure carries out a count.

Further, install first mounting panel on the fixed plate, first mounting panel is L shape, first mounting panel is used for installing slewing mechanism.

In conclusion, the beneficial effects of the utility model are as follows:

the swing structure of the utility model has low requirements on the motor in the rotating mechanism, and compared with the motor in the traditional protein tracing instrument, the motor adopted by the utility model does not need large rotating torque; meanwhile, the utility model does not need to carry out complex control on the motor, such as the accurate control of the rotating speed of the motor, the control of the rotating direction and the like; in addition, the motor adopted by the utility model can select a conventional stepping motor, and the delicate steering change and the rotating speed control of the swing structure can be realized by carrying out simple unidirectional rotation, so that the production cost of the protein tracing instrument can be greatly increased; moreover, the swing structure is provided with multi-gear speed regulation, and can be used for being suitable for various working environments or meeting different working requirements; finally, the sliding bearings made of special engineering plastics are adopted as the revolute pairs in the utility model, and the sliding bearings have a series of characteristics of high wear resistance, dust resistance, dirt resistance, lubrication free, maintenance free and the like, so that technicians do not need to maintain regularly, the maintenance cost is reduced, and the service life of the whole device is greatly prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a rocking mechanism of the present invention in one orientation;

FIG. 2 is a schematic view of a rocking mechanism of the utility model in another orientation;

FIG. 3 is an exploded view of a swing mechanism of the present invention in a pivot position;

FIG. 4 is a graph of the rotational speed imparted to part 1 in a motion simulation;

FIG. 5 is a graph of the rotational speed achieved for part 3 in a motion simulation;

FIG. 6 is a schematic view of a motion simulation with part 3 in a horizontal position;

FIG. 7 is a schematic view of a motion simulation in which the part 3 is in a near right limit condition;

FIG. 8 is a schematic view of the motion simulation with the part 3 again in a nearly horizontal position;

fig. 9 is a schematic view of the part 3 in a nearly left-side limit state in the motion simulation.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention are described in detail below with reference to the accompanying drawings, it should be noted that the embodiments are only detailed descriptions of the present invention and should not be considered as limitations of the present invention, and all features disclosed in the embodiments of the present invention or all steps in a disclosed method or process can be combined in any way except for mutually exclusive features and/or steps.

This embodiment provides a wabbler mechanism for to putting into membrane and reagent in the automatic protein trace appearance, rocking through wabbler mechanism's reciprocal and letting the abundant fusion reaction of membrane and antigen in the instrument, and then obtain accurate testing result. The swing mechanism comprises a film bearing device 10, a connecting rod mechanism 20 and a rotating mechanism 30, wherein the rotating mechanism 30 is a driving part in the swing mechanism, is generally controlled by a motor and is used for providing kinetic energy for the swing mechanism; the rotating mechanism 30 is connected with the link mechanism 20, and the rotating mechanism 30 can drive the link mechanism 20 to move; the connecting rod mechanism 20 is connected with the membrane bearing device 10, all the steps of detection, liquid adding, incubation, combination, sample adding, cleaning and the like in the western blot instrument are carried out in the membrane bearing device 10, the rotating mechanism 30 can drive the membrane bearing device 10 to move through the connecting rod mechanism 20, the membrane bearing device 10 can swing repeatedly, the reciprocating swing of the membrane bearing device 10 can enable a sample and a reagent to be fully fused and reacted, and the aim of accurate detection is further fulfilled.

Referring to fig. 1, the membrane carrier 10 has a pivot 11 about which the membrane carrier 10 can pivot, and the pivot 11 is generally located on a vertical plane (a perpendicular bisector in the drawing, and a vertical plane in three dimensions) of the membrane carrier 10 in order to uniformly fuse the membrane and the antigen in the apparatus. The pivot 11 is also located on the fixing plate 12, the membrane carrier 10 is connected with the fixing plate 12 in a pivot fit manner through the pivot 11, and in order to ensure the installation stability and the rotation stability of the membrane carrier 10 on the fixing plate 12, two pivots 11 are provided, as shown in fig. 2. Specifically, be equipped with fixing base 121 on the fixed plate 12, be equipped with two on the fixing base 121 and support ear 122, all be equipped with through-hole 123 in two support ears 122, through-hole 123 is used for installing round pin 124, it is equipped with backup pad 125 still to overlap on the round pin 124, backup pad 125 connect in membrane load device 10. The pin 124 is the rotation pivot 11 of the film carrier 10 and the fixing seat 121, and is also the rotation center of the two.

Referring to fig. 1, the link mechanism 20 includes a first connecting structure 21, a second connecting structure 22 is connected to the first connecting structure 21 in a rotating fit manner, and a third connecting structure 24 is connected to the second connecting structure 22 in a rotating fit manner, wherein the first connecting structure 21 is connected to the rotating mechanism 30, and the third connecting structure 24 is connected to the film carrier 10. The first connecting structure 21, the second connecting structure 22 and the third connecting structure 24 may be three connecting rods, adjacent connecting rods are connected in a rotating fit manner, and the simplest rotating fit connecting manner is that a rotating shaft is inserted into a rotating fit position of the adjacent connecting rods. In this embodiment, since the first connecting structure 21 is connected to the motor in the rotating mechanism 30, if the first connecting structure 21 is a connecting rod, when the motor is in operation, the rotating shaft of the motor may receive extremely uneven load due to the gravity and centrifugal force of the first connecting structure 21, which may affect the service life of the motor, as a preferred technical solution, the first connecting structure 21 is disc-shaped, so that the gravity is distributed as uniformly as possible, which may reduce the uneven load received by the rotating shaft of the motor, and the disc-shaped first connecting structure 21 and the second connecting structure 22 rotatably and fittingly connected thereto form a structure similar to an eccentric wheel.

Preferably, the film carrier 10 is generally rectangular, and in order to make the film carrier 10 uniformly stressed when the motor in the rotating mechanism 30 is started, the third connecting structure 24 is located on a middle vertical plane of the film carrier 10 along the long side direction, as shown in fig. 2. It should be noted that the third connecting structure 24 is disposed eccentrically, as shown in fig. 1, that is, the third connecting structure 24 cannot be located on the connecting line between the two rotation fulcrums 11, because the rotating mechanism 30 cannot drive the film carrier 10 to perform a swinging motion when the third connecting structure 24 is located on the connecting line between the two rotation fulcrums 11. Further, the greater the distance from the third connecting structure 24 to the pivot point 11, i.e., the greater the eccentric distance, the smaller the maximum swing amplitude of the film carrier 10, all other things being equal.

In the automatic egg white imprinting appearance of conventionality, the servo motor that uses, its servo motor's output shaft and the rotation fulcrum 11 that the membrane bore manufacturing 10 are connected, in order to realize the action of swaing, need to input forward pulse, reverse pulse signal to servo motor, very loaded down with trivial details, servo motor's high price has improved the cost of egg white imprinting appearance greatly simultaneously. In the present invention, under the action of the link mechanism 20, the motor in the rotating mechanism 30 only needs to rotate in one direction to control the film carrier 10 to perform a swing operation, and there is no need to repeatedly input a forward pulse and a reverse pulse signal, which is much more convenient; meanwhile, after repeated forward pulse and reverse pulse signals are not required to be input, the rotating precision of the motor during working is not required, the servo motor can be replaced by a common stepping motor, the cost of the stepping motor is far lower than that of the servo motor, and the manufacturing cost of the automatic protein tracing machine is obviously reduced.

Preferably, for the convenience of counting the number of times of swinging that the inner membrane of the device bears and makes 10, be equipped with an opto-coupler separation blade 14 on link mechanism 20, correspond to it, still be equipped with an opto-coupler induction structure 15 in the device, along with slewing mechanism 30 starts the drive link mechanism 20 moves, every round of motor in slewing mechanism 30, on link mechanism 20 opto-coupler separation blade 14 just once (shelter from once) opto-coupler induction structure 15 carries out a count. Further, as shown in fig. 1, the optical coupling blocking piece 14 is installed on the second connecting structure 22, when the film carrying device 10 is located at a horizontal position, the right end of the optical coupling blocking piece 14 just covers the optical coupling inductor 15, and the optical coupling inductor 15 is located on a necessary path in the movement process of the optical coupling blocking piece 14.

Preferably, the motor in the rotating mechanism 30 is kept stationary to ensure that the parameters of amplitude, frequency, angle, etc. of each oscillation of the film carrier manufacturing 10 are kept consistent. In this embodiment, the fixed plate 12 is stationary, so the rotating mechanism 30 can be mounted on the fixed plate 12. Specifically, install first mounting panel 16 on fixed plate 12, first mounting panel 16 is L shape, motor 17 can be installed to first mounting panel 16, the output shaft of motor 17 first connection structure 21. And a second mounting plate 18 is arranged on the first mounting plate 16, and the second mounting plate 18 is used for mounting the optical coupling induction structure 15.

Preferably, the rotating mechanism 30 is located at a lower side position of the third connecting structure 24 when the film carrier manufacturing 10 is in a horizontal state. Further, the rotating shaft of the motor 17 in the rotating mechanism 30 is located at a position right below the third connecting structure 24, that is, a connecting line between the third connecting structure 24 and the rotating shaft of the motor 17 is in a vertical state.

Preferably, the present invention has at least four rotation pairs, which are a rotation pair of a motor in the rotation mechanism 30, a rotation pair between the first connection structure 21 and the second connection structure 22, a rotation pair between the second connection structure 22 and the third connection structure 24, and a rotation pair at the position of the rotation fulcrum 11. These revolute pairs all require high frequency rotation during operation of the western blotting apparatus, for example, at the position of the fulcrum 11, the membrane carrier 10 is repeatedly swung around the fulcrum 11, in order to improve the smoothness of rotation, sliding elements 13 are provided between the pin 124 and the two support lugs 122, and between the pin 124 and the support plate 125, most commonly the sliding elements 13 are rolling bearings, it has the advantages of low cost, stable operation, and the like, but also has the problem of frequent need of lubricating oil or lubricating grease, is more complicated, if the lubricating oil or the lubricating grease is not added in time, the bearing materials can be peeled off, the bearing flanges can be scratched, resulting in overheating of the rollers, extreme localized heating that can generate metal flow in the bearing, altering the original material and geometry of the bearing, eventually leading to excessive roller tilting, cage damage and complete bearing lock-up. Therefore, in these environments of high-frequency rotation, if a rolling bearing is selected, a technician is required to check and maintain the rolling bearing regularly, which is cumbersome.

In the present embodiment, the sliding member 13 is a sliding bearing (press-fit bearing) made of a special engineering plastic, and the thermoplastic base plastic material meeting the requirement is screened, and the material is usually added with reinforcing fibers to enhance the compressive strength, and is also added with solid grease for optimizing the wear resistance. These solid lubricating particles "embedded" in the matrix material are of paramount importance for the requirements of "dry running". In operation, sliding bearings typically release thousands of solid lubricant particles stored in a matrix material, due to pressure and motion, onto the contact surfaces of the shaft and bearing, sufficient to provide sufficient solid lubrication of the contact surfaces to achieve dry running. The sliding bearing made of engineering plastics has a series of characteristics of high wear resistance, dust resistance, dirt resistance, lubrication free, maintenance free and the like, is particularly suitable for the device, technical personnel do not need to maintain regularly, maintenance cost is reduced, and the service life of the whole device is greatly prolonged. In particular, the plain bearing of iglidur, germany, can be used. Here, the rotation pair at the position of the rotation fulcrum 11 is taken as an example, and the rotation pairs at other positions can adopt the similar structure.

In the automatic egg white mark appearance among the prior art the operation that sways that membrane load device 10 carried out is controlled by servo motor input forward pulse, reverse pulse signal, works as when membrane load device 10 moves to extreme position to one side, need switch over at once and input a reverse pulse signal and make it move to the opposite side, avoid membrane load device 10 excessively moves to one side, the condition that the reagent spills out appears. Then, when the two pulse signals are switched, there is a moment of sudden change of the signals, at this moment, the membrane carrier 10 suddenly moves in the reverse direction, but the reagent in the membrane carrier 10 has inertia to move in the original direction, the opposite impact of the two is very easy to cause the reagent in the membrane carrier 10 to splash, in order to solve this problem, a technician usually starts to reduce the input pulse signal when the membrane carrier 10 moves to a limit position quickly, so that the sudden change process is as gentle as possible, and after the membrane carrier 10 passes the limit position, starts to amplify a reverse pulse signal, so that the whole control process of accelerating the membrane carrier 10 to reversely swing … … is very tedious, and the manufacturing cost of the device is increased again.

In order to highlight the advantages of the rocking mechanism of the present invention, motion simulation is performed on several core components in the rocking mechanism, referring to fig. 4-9, a component 1 corresponds to the first connecting structure 21, a component 2 corresponds to the second connecting structure 22, a component 3 corresponds to the membrane carrier 10, a component 4 corresponds to the fixing plate 12, an arrow 5 corresponds to the speed (vector) of the edge position of the membrane carrier 10, the length of the arrow 5 corresponds to the speed, and the direction of the arrow 5 corresponds to the speed direction.

Now, the part 1 is endowed with an angular speed of 15r/min, namely 15 turns per minute, and the attached figure 4 is a power (angular speed) input curve of the part 1; figure 5 is a graph of the power (angular velocity) output of the part 4 about its fulcrum.

Referring to fig. 6, the state is the moving speed of the edge of the part 3 (arrow 5 position, the same below) when the part is in the horizontal state; referring to fig. 7, the state is the moving speed of the edge of the part 3 at the nearly right limit state after 1 second from the state of fig. 6; referring to fig. 8, the state is the state of fig. 7, after 1 second, the moving speed of the edge of the part 3 is nearly horizontal; referring to fig. 9, the state is the moving speed of the edge of the part 3 at the nearly left limit state after 1 second from the state of fig. 8.

As can be clearly seen in conjunction with fig. 5 and the schematic views of fig. 6-9 in various states: when the part 3 is in a horizontal state, referring to fig. 6 and 8, the reagent in the part is not easy to leak because the part 3 is stably placed, and at this time, a larger rotation speed is expected to be given to the part 3, which is helpful for allowing the membrane in the part 3 to perform a sufficient fusion reaction with the antigen, in the present invention, the arrow 5 corresponding to fig. 6 and 8 is longer, the corresponding instantaneous speed in fig. 5 is close to the maximum value of the rotation speed, and the swing mechanism of the present invention can just give a larger movement speed to the part 3 when the part 3 is in the horizontal state, namely, a larger angular speed is given to the position of the rotation fulcrum of the part 3 (the rotation fulcrum 11 of the membrane bearing device 10); when the component 3 is in the left limit state or the right limit state, referring to fig. 7 and 9, the reagent in the component is easy to leak because the component 3 is in the inclined state, and in the two states, the component 3 immediately swings reversely, which promotes the reagent to leak, so that in order to avoid the leakage, a small rotating speed is expected to be given to the component 3, so that the conversion process is as gentle as possible, whereas in the utility model, the arrow 5 corresponding to fig. 7 and 9 is short, and the corresponding instantaneous rotating speed in fig. 5 is close to 0, so that the speed reduction near the limit position is perfectly realized, and the required speed of the utility model can be well realized.

Through the swing structure of the utility model, the higher requirement on the motor in the rotating mechanism 30 is not required any more, and meanwhile, according to the lever principle, because the rotating mechanism 30 drives the third connecting structure 24, and the third connecting structure 24 is arranged eccentrically, compared with the traditional swing mechanism motor which is directly output to the rotating fulcrum 11, the motor in the utility model does not need a large rotating moment; in addition, the utility model does not need to carry out complex control on the motor, such as the control on the rotating speed and the rotating direction of the motor at each moment, and only needs to select the conventional stepping motor under a delicate mechanical structure, thereby being capable of greatly reducing the production cost of the protein track plotter. Preferably, the swing structure provided by the utility model is provided with multi-gear speed regulation, and is suitable for various working environments or different working requirements.

The above description is only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through creative work should be covered within the protection scope of the present invention, and therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (9)

1. A rocking mechanism is characterized by comprising a film bearing device, a connecting rod mechanism and a rotating mechanism, wherein the rotating mechanism is connected with the connecting rod mechanism, and the connecting rod mechanism is connected with the film bearing device;

wherein, the connecting rod mechanism and the film bearing device are both internally provided with a revolute pair, a sliding part is arranged in the revolute pair, and the sliding part is a sliding bearing made of engineering plastics;

the connecting rod mechanism comprises a first connecting structure, a second connecting structure and a third connecting structure; the first connecting structure is connected with the second connecting structure in a rotating matching mode to form a rotating pair, the second connecting structure is connected with the third connecting structure in a rotating matching mode to form a rotating pair, the first connecting structure is connected with the rotating mechanism, and the third connecting structure is connected with the film bearing device.

2. The rocking mechanism of claim 1, wherein the rotating mechanism is a driving member in the rocking mechanism, and the rotating mechanism can drive the film carrier to move through the linkage mechanism, so as to achieve repeated rocking of the film carrier around the revolute pair therein.

3. The rocking mechanism of claim 1, wherein the revolute pair in the membrane carrier is a fulcrum about which the membrane carrier can rotate, the fulcrum being located on the fixed plate, and the membrane carrier and the fixed plate being connected in a revolute fit through the fulcrum.

4. The rocking mechanism of claim 3, wherein the fixing plate is provided with a fixing seat, the fixing seat is provided with a supporting lug, the supporting lug is provided with a through hole for installing a pin, the pin is further sleeved with a supporting plate, the supporting plate is also provided with a through hole, the supporting plate is connected to the film bearing device, and the pin is located at the rotation fulcrum of the film bearing device and the fixing seat.

5. A rocking mechanism as claimed in claim 3, wherein there are two of the pivot points.

6. The rocking mechanism of claim 1, wherein the first connecting formation is disc-shaped.

7. The rocking mechanism of claim 1, wherein the rotation mechanism comprises a motor, and when the film carrier is manufactured in a horizontal state, a line connecting a rotation center of the motor and a center of a revolute pair formed by the second connection structure and the third connection structure is in a vertical state.

8. The rocking mechanism of claim 2, wherein the linkage mechanism is provided with an optical coupling stop corresponding to the optical coupling stop, the rocking mechanism further comprises an optical coupling sensing structure, the rotating mechanism comprises a motor, and as the motor in the rotating mechanism drives the linkage mechanism to move, the optical coupling stop on the linkage mechanism passes through the optical coupling sensing structure once per rotation of the motor, and a count is performed.

9. The rocking mechanism of claim 4, wherein the fixed plate has a first mounting plate mounted thereon, the first mounting plate being L-shaped and being adapted to mount the pivoting mechanism.

Images