[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0027] See figure 1 The present invention provides an infusion pump 100 with an electric control opening and closing pump door according to an embodiment, which includes a middle plate 10 and a pump door 30 hinged to the middle plate 10. The middle plate 10 is generally rectangular plate-shaped as a whole, and the pump door 30 is generally rectangular plate-shaped as a whole, and can be opened or closed relative to the middle plate 10.
[0028] Please refer to figure 2 , image 3 and Figure 4 The electric control switch pump door 100 further includes a control module (not shown), a motor 11, a deceleration device 12, a transmission assembly, a position trigger 15, a control button 16 and a position control device 17. The control module, the motor 11, the deceleration device 12, the transmission assembly, the position triggering member 15, the control button 16 and the position control device 17 are arranged on the middle board 10.
[0029] The control module may be a human-computer interaction control system, which is used to control the start and stop of the motor 11 and also adjust the speed of the motor 11. The motor 11 is connected to the transmission assembly through the deceleration device 12 and provides power for the transmission assembly to drive the transmission assembly to move. In the embodiment of the present invention, the motor 11 may be a stepping motor, which has strong controllability, so as to increase the safety and reliability of operation control.
[0030] In the embodiment of the present invention, the transmission assembly includes a threaded rod 13 and a nut 14. The threaded rod 13 is generally cylindrical as a whole, with external threads on it, and the motor 11 is connected to the motor 11 through the deceleration device 12 The screw rod 13 is connected and provides power for the screw rod 13. The nut 14 has a substantially rectangular parallelepiped shape as a whole, and is threadedly connected to the screw rod 13 and fixedly connected to the position trigger 15 at the same time.
[0031] In the embodiment of the present invention, the position triggering member 15 may be a sliding rod, which is arranged in parallel with the above-mentioned screw rod 13. The position triggering member 15 is generally rectangular in shape as a whole, and includes a trigger button 151 and a door buckle sliding groove 152 . The door buckle sliding groove 152 is opened on one side of the position triggering member 15. In the embodiment of the present invention, the position triggering member 15 includes two door buckle sliding grooves 152.
[0032] The position control device 17 includes a first position switch 171, a second position switch 173, and a button switch 175. The trigger button 151 is located between the first position switch 171 and the second position switch 173. The control button 16 The key switch 175 is electrically connected to the control module, which participates in the operation of closing the pump door 30. In the embodiment of the present invention, the position control device 17 may be a switch board. When the motor 11 drives the transmission assembly through the deceleration device 12, and at the same time drives the position trigger 15 to move to the first state position or the second state position, the trigger button 151 on the position trigger 15 triggers the The first position switch 171 or the second position switch 173 on the position control device 17 indicates that the pump door 30 is in a closed or open state. In other embodiments, the first position switch 171 and the second position switch 173 may also be non-contact switches such as optocouplers and Hall sensors.
[0033] The control button 16 corresponds to the installation position of the button switch 175 on the position control device 17. When the control button 16 is depressed, the control button 16 makes the button switch 175 on the position control device 17 in In the open state, at this time, the key switch 175 sends a trigger signal to the control module, and the control module controls the motor 11 to start and rotate. The middle plate 10 is also provided with a door buckle hole 18, and the opening position of the door buckle hole 18 corresponds to the opening position of the door buckle sliding groove 152.
[0034] The pump door 30 includes a door opening button (not shown), a protrusion 31 and a locking member 32. The door opening button is electrically connected to the aforementioned control module, and is used to open the pump door 30. The installation position of the protrusion 31 corresponds to the position of the control button 16. When the pump door 30 is closed, the protrusion 31 contacts the control button 16 and can press the control button 16. The locking member 32 can pass through the door buckle hole 18 and expose the door buckle hole 18. In the embodiment of the present invention, the locking member 32 may be a door buckle, the end of which is provided with a door buckle column end 322, and the door buckle column end 322 can be moved into the door buckle sliding groove 152 on the position trigger 15 Inside, or removed from the door buckle chute 152. In the embodiment of the present invention, the sum of the height of the control button 16 protruding from the middle plate 10 and the height of the protrusion 31 protruding from the pump door 30 is less than or equal to 10 mm.
[0035] Please refer to image 3 and Figure 5 In the process of closing the pump door 30, push the pump door 30 in a direction close to the middle plate 10. Since the control button 16 protrudes from the surface of the middle plate 10, the protrusion 31 Protruding from the surface of the pump door 30, the protrusion 31 abuts the control button 16. When the bump 31 presses the control button 16, the control button 16 makes the button switch 175 on the position control device 17 open, the button switch 175 sends a trigger signal to the control module, and the control module controls The motor 11 starts and performs forward rotation (for example, the clockwise direction can be set as the forward rotation direction). After the motor 11 is decelerated by the deceleration device 12, it drives the screw rod 13 of the transmission assembly to rotate forward at the same time. The screw rod 13 rotates in the original position while driving the nut 14 and the position trigger 15 to the positive direction (such as Can be set Figure 5 The X direction in is the positive direction) movement. At this time, the locking member 32 on the pump door 30 passes through the door buckle hole 18 on the middle plate 10, and the door buckle column end 322 on the locking member 32 moves into the position triggering member 15 In the door buckle chute 152, the pump door 30 is closed. At the same time, when the trigger button 151 on the position trigger 15 triggers the first position switch 171 on the position control device 17, it means that the pump door 30 is closed. At this time, the first position switch 171 sends the corresponding The trigger signal is sent to the control module, and the control module controls the motor 11 to stop rotating, and the action of closing the pump door 30 can be completed. In the embodiment of the present invention, because the pump door 30 is closed in most cases, when the protrusion 31 presses the control button 16, the control button 16 makes the position control device 17 The key switch 175 is turned on, that is, the key switch 175 is in a relaxed state when the pump door 30 is closed, which can increase the service life of the key switch 175.
[0036] Please refer to figure 2 and Image 6 , In the process of opening the pump door 30, press the door opening button on the pump door 30, the control module controls the motor 11 to start, and reverse (for example, the counterclockwise direction can be set to reverse Direction), after the motor 11 is decelerated by the deceleration device 12, the screw 13 of the transmission assembly is driven to reverse at the same time, and the screw 13 rotates in the original position while also driving the nut 13 and the position trigger 15 In the opposite direction (if you can set Image 6 The -X direction is the opposite direction) movement. At this time, the door buckle column end 322 moves out of the door buckle chute 152 on the trigger member 15 at this position in a direction away from the middle plate 10, and the pump door 30 is opened. At the same time, when the trigger button 151 on the position trigger 15 triggers the second position switch 173 on the position control device 17, it means that the pump door 30 has been opened. At this time, the second position switch 173 sends a corresponding The trigger signal is sent to the control module, and the control module controls the motor 11 to stop rotating, and then the action of opening the pump door 30 is completed.
[0037] See figure 1 In the present invention, the height of the control button 16 protruding from the middle plate 10 and the height of the protrusion 31 protruding from the pump door 30 are set to be less than or equal to 10 mm, because the human fingers The thickness is generally greater than 10 mm. Thus, if the hand does not move out of the gap between the pump door 30 and the middle plate 10 during the process of closing the pump door 30, when the pump door 30 presses the hand The gap between the pump door 30 and the middle plate 10 is greater than 10 mm, so that the bumps 31 on the pump door 30 cannot touch the control buttons 16 on the middle plate 10. Therefore, the motor 11 cannot be started, and the pump door 30 cannot be automatically closed, thereby ensuring that the pump door 30 and the middle plate 10 will not pinch hands, thereby ensuring safety during operation.
[0038] In addition, in the infusion pump 100 with an electric control opening and closing pump door provided by the present invention, in the process of opening and closing the pump door 30, the motor 11, the deceleration device 12, the transmission assembly, the position trigger 15, and the control button 16 and the position control device 17 and other components to realize the automatic opening and closing of the pump door 30, that is, when the pump door 30 is opened, the door 30 can be automatically opened by pressing the door opening button on the pump door 30. . When the pump door 30 is closed, it is only necessary to move the pump door 30 to the middle plate 10 and press the control button 16 to automatically close the pump door 30. Therefore, the infusion pump 100 with the electric control opening and closing pump door of the present invention can close and open the pump door 30 without applying a large force, which not only saves manpower, and avoids the infusion pump from tipping over due to excessive manpower, but also operates It is also very convenient and significantly improves work efficiency.
[0039] Such as Figure 5 and Image 6 As shown, as a preferred embodiment of the present invention, the door buckle chute 152 is an arc-shaped groove opened on the position triggering member 15, and the door buckle chute 152 is configured as an arc-shaped groove structure. When the pump door 30 is described, the transmission assembly drives the trigger 15 at this position to the positive direction ( Figure 5 In the X direction), it is convenient for the trigger member 15 at this position to drive the door buckle column end 322 on the locking member 32 to slide into the door buckle chute 152, so that the pump door 30 can be smoothly closed. When the pump door 30 is opened, the transmission assembly drives the trigger 15 at this position to the opposite direction ( Image 6 (Center-X direction) movement, so that the trigger member 15 at this position drives the door buckle column end 322 to slide out of the door buckle chute 152 in a direction away from the middle plate 10, so that the pump door 30 is smooth turn on.
[0040] Please refer to figure 2 , image 3 and Figure 4 As a preferred embodiment of the present invention, the middle plate 10 is also provided with a guiding device 21 that can guide the position triggering member 15, and the guiding device 21 may be a guiding plate with an "L" cross section. . The guide plate can align the positive and negative directions of the position trigger 15 ( Figure 5 with Image 6 In the X direction and -X direction), the linear motion is guided to ensure the accuracy of the linear motion of the position trigger 15 and prevent the position trigger 15 from shifting during the linear back and forth movement.
[0041] Such as figure 2 , image 3 and Figure 4 As shown, as a preferred embodiment of the present invention, the reduction gear 12 is a worm gear reduction assembly. Of course, in other embodiments, the reduction gear 12 may also be a reduction gear assembly, a pulley reduction assembly or a sprocket reduction assembly, etc. Common deceleration components.
[0042] It can be understood that, in other embodiments, the transmission assembly may also be a combination of a gear and a rack, the motor 11 drives the gear to rotate through the reduction device 12, and the rack is installed on the position trigger 15 The motor 11 drives the gear to rotate through the reduction device 12, and the gear drives the rack and the position trigger 15 to move together.
[0043] Such as figure 2 , image 3 and Figure 4 As shown, as a preferred embodiment of the present invention, the specific rotational connection between the screw rod 13 and the middle plate 10 is as follows: the middle plate 10 is provided with two bearing brackets 23, and the bearing brackets 23 are both installed There are bearings (not shown in the figure), and both ends of the screw rod 13 are respectively sleeved in the bearings, thereby achieving the purpose of rotating connection between the screw rod 13 and the middle plate 10.
[0044] Such as image 3 As shown, as a preferred embodiment of the present invention, a magnetic member 33 is further provided on the pump door 30, and a Hall element 25 is further provided on the position control device 17. The magnetic element 33 can be a magnet, which can generate a magnetic field; the Hall element 25 is installed on the position control device 17, and the installation position of the Hall element 25 corresponds to the installation position of the magnetic element 33, and The magnetic field of the magnetic member 33 and its magnetic field change can be detected. In the embodiment of the present invention, the position control device 17 may be a circuit board card, and the Hall element 25 is fixed on the circuit board card by welding. When the pump door 30 is completely closed, the distance between the magnetic member 33 and the Hall element 25 is the shortest. At this time, the Hall element 25 detects the magnetic field of the magnetic member 33 and sends a corresponding signal , To confirm that the pump door 30 has been closed. After the pump door 30 is closed, the control module can control the infusion pump to work normally; if the pump door 30 is not closed, the infusion pump will not start. Of course, in other embodiments, the Hall element 25 and the magnetic element 33 can also be implemented by any one or a combination of common signal detection devices such as micro switches, photoelectric switches, optical couplers, code disks, and light touch switches. Replacement can also play the same role.
[0045] The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered This is the protection scope of the present invention.
