Glass slide driving mechanism in pollen collector
By designing a negative pressure powder absorbing device and a slide drive mechanism in the pollen collector, the problem of the slide being susceptible to rainwater and environmental airflow is solved, and more accurate pollen collection and monitoring is achieved.
Patent Information
- Application Number
- CN202421079133.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In existing pollen collection devices, the slides are easily affected by rainwater and environmental airflow, resulting in inaccurate collection results.
A pollen collector is designed, including a slide drive mechanism, which includes a rack, gear, a reducer motor and a clutch mechanism, which can drive the glass table to move slowly along the drawer box and not hinder its operation when the drawer box is inserted and unplugged.
Through the combination of the negative pressure powder absorbing device and the slide drive mechanism, the impact of environmental airflow on collection can be effectively reduced, and the slides can be prevented from being contaminated by rainwater, improving the accuracy of the acquisition results.
Smart Images
Figure CN222671496U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of environmental monitoring equipment, in particular to a glass slide driving mechanism in a pollen collector. Background Art
[0002] With the increasing number of cases of pollen allergic rhinitis every year, there is an urgent need to establish a pollen monitoring and forecasting system to improve the scientificity, timeliness and accuracy of pollen monitoring and forecasting, so that patients with allergic rhinitis can understand pollen information in advance and avoid the peak period of pollen concentration in the air, or take preventive measures such as drug treatment before the peak period of pollen concentration arrives, so as to effectively prevent the occurrence and aggravation of allergic reactions and minimize the pain of patients. Accurately collecting and monitoring the concentration of allergenic pollen in the air in a certain area is the key to preventing allergic rhinitis and asthma. Pollen standard sample collection often uses a pollen collection device. The existing technology mostly uses gravity natural sedimentation to collect and monitor pollen. Specifically, a glass slide coated with an adhesive is placed in an open box outdoors. The pollen will settle onto the glass slide during natural floating, and then the glass slides are collected at regular intervals to observe the number of pollen spores under a microscope. The gravity natural sedimentation method for collecting pollen is easy to popularize and implement, but the glass slides used for collection are easily contaminated by external environment such as rain, affecting subsequent sample observations. In addition, the collection results are also easily affected by environmental airflow. When the environmental airflow is unstable, the collected samples are easily distorted. In order to overcome the above-mentioned shortcomings, the applicant has invented a pollen collector, the structure of which includes: a chassis, a rain shield is provided on the chassis to prevent the glass slide from being contaminated by rain, a drawer box is inserted in the chassis, a glass slide is provided in the drawer box, the glass slide for collecting pollen is detachably fixed on the glass slide, and in order to reduce the influence of ambient airflow on pollen collection, a negative pressure powder suction device is provided in the chassis, the negative pressure powder suction device can suck pollen in the air into the chassis and blow it onto the glass slide, so that the pollen can be collected by the glass slide; in order to more conveniently monitor the pollen concentration in the air at different time periods, it is best to enable the glass slide to move slowly along the drawer box so that the pollen collected at different time periods can fall on different positions of the glass slide, and then monitor the pollen concentration in the air at different time periods by observing the number of pollen at each position of the glass slide. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a glass slide driving mechanism which has a simple and reliable structure, can drive the glass slide table to move slowly along the drawer box, and can not hinder the insertion and removal of the drawer box.
[0004] In order to solve the above problems, the technical solution adopted by the utility model is: a slide driving mechanism in a pollen collector, comprising: a chassis, characterized in that: a rack, a gear, and a motor seat are arranged in the chassis, the rack is fixed to one side of the slide table, an avoidance gap is arranged on the drawer box, a reduction motor is installed on the motor seat, the gear is fixed on the output shaft of the reduction motor, the gear can pass through the avoidance gap and mesh with the rack for transmission, the reduction motor can drive the slide table to slide along the drawer box through the gear and rack transmission, and a clutch mechanism that can clutch the gear and the rack is also arranged, under the action of the clutch mechanism, the gear can be separated from or meshed with the rack, and the gear can withdraw from the avoidance gap when separated, so that the gear will not hinder the insertion and removal of the drawer box.
[0005] Furthermore, the slide driving mechanism in the aforementioned pollen collector, wherein: the structure of the clutch mechanism is as follows: the motor seat is located next to the drawer box, and can slide back and forth to approach or move away from the drawer box, and the gear can withdraw from the avoidance gap and separate from the rack after the motor seat slides away from the drawer box, a pull rod is also provided in the chassis, a clutch knob is provided on the outside of the chassis, a clutch pad is provided on the inner end of the clutch knob, and a slot for the clutch pad to be inserted is provided on the side wall of the chassis, when the clutch pad is inserted into the slot, the clutch pad cooperates with the slot to prevent the clutch knob from rotating, the pull rod is located between the clutch knob and the motor seat, one end of the pull rod is connected to the motor seat, and the other end of the pull rod is connected to the inner end of the clutch knob, and the connection structure between the pull rod and the motor seat and the inner end of the clutch knob enables the clutch knob to push and pull the motor seat through the pull rod, After the external force is removed, the clutch pad can prevent the gear from resetting under the action of the spring by abutting against the side wall of the chassis, thereby keeping the gear in a position where it is disengaged from the rack and does not interfere with the insertion and removal of the drawer box.
[0006] Furthermore, the slide driving mechanism in the aforementioned pollen collector is provided with a push-pull boss on one end of the pull rod connected to the motor seat, and a receiving groove for receiving the push-pull boss is provided on the motor seat, the push-pull boss is clamped in the receiving groove, and the connection structure between the push-pull boss and the receiving groove can enable the pull rod to drive the motor seat to move back and forth through the push-pull boss, and at the same time the pull rod can rotate independently and freely relative to the motor seat, and a retaining spring is installed on the end of the pull rod connected to the clutch knob, and one end of the pull rod is clamped in the clutch knob through the retaining spring.
[0007] Furthermore, in the aforementioned glass slide driving mechanism of the pollen collector, a detachable cap is installed on the outer end of the clutch knob, and the retaining spring is clamped on the end of the pull rod before the cap is installed.
[0008] Furthermore, in the aforementioned pollen collector, a glass slide driving mechanism is provided, wherein: a sealing ring is provided on the end faces opposite to the clutch knob and the side wall of the chassis, and when the gear is engaged with the rack under the action of the spring, the clutch knob will abut against the side wall of the chassis, so that the sealing ring can seal between the clutch knob and the side wall of the chassis.
[0009] The advantages of the utility model are as follows: the slide driving mechanism in the pollen collector has a simple and reliable structure, can drive the slide table to move slowly along the drawer box, and does not hinder the withdrawal of the drawer box, so that pollen collected in different time periods can be guided to fall on different positions of the slide in turn, so that the pollen concentration of multiple different time periods can be monitored by observing a slide, thereby greatly reducing the frequency of slide replacement and reducing the workload of operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a three-dimensional structural schematic diagram of the glass slide driving mechanism in the pollen collector described in the utility model.
[0011] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA.
[0012] Figure 3 The utility model is a schematic diagram of the assembly structure of the drawer box, the glass stage and the glass slide in the pollen collector.
[0013] Figure 4 It is a structural schematic diagram of the clutch knob described in the utility model. DETAILED DESCRIPTION
[0014] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.
[0015] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the slide drive mechanism in the pollen collector includes: a chassis 1, in which a rack 14, a gear 15, and a motor seat 17 are arranged, the rack 14 is fixed to one side of the glass stage 7, an avoidance gap 16 is arranged on the drawer box 6, a reduction motor 19 is installed on the motor seat 17, the gear 15 is fixed to the output shaft of the reduction motor 19, the gear 15 can pass through the avoidance gap 16 and mesh with the rack 14 for transmission, the reduction motor 19 can drive the glass stage 7 to slide along the drawer box 6 through the gear 15 and the rack 14, and a clutch mechanism that can clutch the gear 15 and the rack 14 is also arranged, under the action of the clutch mechanism, the gear 15 can be separated from or meshed with the rack 14, and when separated, the gear 15 can withdraw from the avoidance gap 16, so that the gear 15 can not hinder the insertion and removal of the drawer box 6.
[0016] In this embodiment, the structure of the clutch mechanism is as follows: the motor seat 17 is located next to the drawer box 6 and can slide back and forth to approach or move away from the drawer box 6. After the motor seat 17 slides away from the drawer box 6, the gear 15 can withdraw from the avoidance gap 16 and separate from the rack 14. A pull rod 18 is also provided in the chassis 1, and a clutch knob 20 is provided on the outside of the chassis 1. The inner end of the clutch knob 20 passes through the side wall of the chassis 1, and a clutch pad 21 is provided on the inner end of the clutch knob 20. A slot is provided for the clutch pad 21 to be inserted into. When the clutch pad 21 is inserted into the slot, the clutch pad 21 cooperates with the slot to prevent the clutch knob 20 from rotating. The pull rod 18 is located between the clutch knob 20 and the motor seat 17. One end of the pull rod 18 is connected to the rear end of the motor seat 17, and the other end of the pull rod 18 is connected to the inner end of the clutch knob 20. The connection structure between the pull rod 18 and the motor seat 17 and the inner end of the clutch knob 20 enables the clutch knob 20 to push and pull the motor seat 17 through the pull rod 18, but The clutch knob 20 cannot rotate with the motor seat 17 through the pull rod 18. A spring 23 is mounted on the pull rod 18. One end of the spring 23 abuts against the motor seat 17, and the other end of the spring 23 abuts against the chassis wall. Under the action of the spring 23, the motor seat 17 will be pushed to slide toward the drawer box 6 until the gear 15 is meshed with the rack 14. When the clutch knob 20 is pulled out by external force, the clutch knob 20 can drive the motor seat 17 through the pull rod 18 to overcome the elastic force of the spring 23 and move away from the drawer box. 6, so that the gear 15 can withdraw from the avoidance gap 16 without hindering the insertion and removal of the drawer box 6. When the clutch pad 21 leaves the slot due to the clutch knob 20 being pulled out, the clutch knob 20 can be driven to rotate by external force, so that the clutch pad 21 can be offset from the slot and cannot be stuck back into the slot. After the external force is removed, the clutch pad 21 can abut against the side wall of the chassis 1 to prevent the gear 15 from resetting under the action of the spring 23, so that the gear 15 can be kept in a position disengaged from the rack 14 and not hindering the insertion and removal of the drawer box 6.
[0017] In this embodiment, a push-pull boss 37 is provided on one end of the pull rod 18 connected to the motor base 17, and a receiving groove for receiving the push-pull boss 37 is provided on the motor base 17. The push-pull boss 37 is clamped in the receiving groove. The connection structure between the push-pull boss 37 and the receiving groove can enable the pull rod 18 to drive the motor base 17 to move back and forth through the push-pull boss 37. At the same time, the pull rod 18 can rotate independently and freely relative to the motor base 17. A retaining spring 38 is installed on the end of the pull rod 18 connected to the clutch knob 20, and one end of the pull rod 18 is clamped in the clutch knob 20 through the retaining spring 38.
[0018] In addition, a detachable cap 39 is installed on the outer end of the clutch knob 20, and the retaining spring 38 is clamped on the end of the pull rod 18 by a caliper before the cap 39 is installed.
[0019] A guide groove 40 and a guide frame 41 are provided in the chassis 1 , the bottom of the motor seat 17 is inserted into the guide groove 40 , the motor seat 17 is inserted into the guide frame 41 , and the back and forth sliding of the motor seat 17 is guided by the guide groove 40 and the guide frame 41 .
[0020] A sealing ring is provided on the end face opposite to the clutch knob 20 and the side wall of the chassis 1. When the gear 15 is engaged with the rack 14 under the action of the spring 23, the clutch knob 20 will abut against the side wall of the chassis 1, so that the sealing ring can seal between the clutch knob 20 and the side wall of the chassis 1; this arrangement can improve the waterproof performance of the pollen collector.
Claims
1. The glass slide driving mechanism in the pollen collector comprises: The chassis is characterized in that: a rack, a gear and a motor seat are arranged in the chassis, the rack is fixed to one side of the glass carrier, an avoidance gap is arranged on the drawer box, a reduction motor is installed on the motor seat, the gear is fixed on the output shaft of the reduction motor, the gear can pass through the avoidance gap and mesh with the rack for transmission, the reduction motor can drive the glass carrier to slide along the drawer box through the gear and rack transmission, and a clutch mechanism that can clutch the gear and the rack is also arranged, under the action of the clutch mechanism, the gear can be separated from or meshed with the rack, and when separated, the gear can withdraw from the avoidance gap, so that the gear can not hinder the insertion and removal of the drawer box.
2. The glass slide driving mechanism in the pollen collector according to claim 1, characterized in that: The structure of the clutch mechanism is as follows: the motor seat is located next to the drawer box and can slide back and forth to approach or move away from the drawer box. After the motor seat slides away from the drawer box, the gear can withdraw from the avoidance gap and separate from the rack. A pull rod is also provided in the chassis, and a clutch knob is provided on the outside of the chassis. A clutch pad is provided on the inner end of the clutch knob, and a slot for the clutch pad to be inserted is provided on the side wall of the chassis. When the clutch pad is inserted into the slot, the clutch pad cooperates with the slot to prevent the clutch knob from rotating. The pull rod is located between the clutch knob and the motor seat, one end of the pull rod is connected to the motor seat, and the other end of the pull rod is connected to the inner end of the clutch knob. The connection structure between the pull rod and the motor seat and the inner end of the clutch knob enables the clutch knob to push and pull the motor seat through the pull rod, but the clutch knob cannot be pulled by the pull rod. The clutch knob rotates with the motor seat, and a spring is mounted on the pull rod, one end of the spring abuts against the motor seat, and the other end of the spring abuts against the wall of the chassis. Under the action of the spring, the motor seat will be pushed to slide toward the drawer box until the gear and the rack are meshed. When the clutch knob is pulled outward by external force, the clutch knob can drive the motor seat through the pull rod to overcome the spring force and move away from the drawer box, so that the gear can withdraw from the avoidance gap without hindering the insertion and removal of the drawer box. When the clutch pad leaves the slot because the clutch knob is pulled out, the clutch knob can be driven to rotate by external force, so that the clutch pad can be staggered with the slot and cannot be stuck back into the slot. After the external force is removed, the clutch pad can abut against the side wall of the chassis to prevent the gear from resetting under the action of the spring, thereby keeping the gear in a position disengaged from the rack and not hindering the insertion and removal of the drawer box.
3. The glass slide driving mechanism in the pollen collector according to claim 2, characterized in that: A push-pull boss is provided on one end of the pull rod connected to the motor seat, and a receiving groove for receiving the push-pull boss is provided on the motor seat. The push-pull boss is clamped in the receiving groove. The connection structure between the push-pull boss and the receiving groove can enable the pull rod to drive the motor seat to move back and forth through the push-pull boss. At the same time, the pull rod can rotate independently and freely relative to the motor seat. A retaining spring is provided on the end of the pull rod connected to the clutch knob, and one end of the pull rod is clamped in the clutch knob through the retaining spring.
4. The glass slide driving mechanism in the pollen collector according to claim 3, characterized in that: A detachable cover cap is installed on the outer end of the clutch knob, and the retaining ring is clamped on the end of the pull rod before the cover cap is installed.
5. The glass slide driving mechanism in the pollen collector according to claim 2, 3 or 4, characterized in that: A sealing ring is arranged on the end surface opposite to the clutch knob and the side wall of the chassis. When the gear is engaged with the rack under the action of the spring, the clutch knob will abut against the side wall of the chassis, so that the sealing ring can seal between the clutch knob and the side wall of the chassis.