CN201063917Y - Automatically lamp-changing cold light source for medical purpose - Google Patents

Abstract

The utility model relates to a medical device, in particular to a medical cold light source with automatic lamp replacement. It includes a frame, on which an optical jack and a transposition board are fixed, and on the transposition board is fixed a light bulb, and there are at least two light bulbs, and a positioning block and a positioning block are fixed on the frame. As for the sensor, the transposition plate is provided with positioning pins and small sensing holes, and an automatic control device is provided at the lower end of the transposition plate. The utility model mainly provides a medical cold light source structure which is convenient to replace the light bulb, has a high degree of automation and is safe to use; it solves the inconvenience of replacing the light bulb in the structure of the medical cold light source existing in the prior art, which requires manual operation. Insufficient cooling and easy to burn technical problems.

Description

A medical cold light source with automatic lamp change

technical field

The utility model relates to a medical device, in particular to a medical cold light source with automatic lamp replacement.

Background technique

Many medical devices such as medical endoscopes need cold light sources for lighting, but all cold light bulbs have a certain lifespan, and are prone to broken wires and scrapped. Not only is it troublesome to change the lamp, but it also takes a while for the bulb to cool down. This may cause medical malpractice in the way of clinical operation. Therefore, someone has applied for a Chinese patent: "Hand-held medical rigid endoscope cold light source (CN2834412)", which includes a hand-held frame connected in sequence, a radiator, an electric control box, a coupler, a light bulb fixing frame, a light bulb, and a heat-conducting layer. Insulation board and constant current driver board. This patent provides a cold light source for medical rigid endoscope with small size, low heat, dual power supply and long service life. But the cold light source of this structure still can't solve the problem that the light bulb is scrapped during the operation and the problem of changing the light is troublesome.

Contents of the invention

The utility model mainly provides a medical cold light source structure which is convenient to replace the light bulb, has a high degree of automation and is safe to use; it solves the inconvenience of replacing the light bulb in the structure of the medical cold light source existing in the prior art, which requires manual operation. Insufficient cooling and easy to burn technical problems.

At the same time, the utility model also provides a medical cold light source structure with high positioning accuracy for lamp replacement and large illuminance; it solves the technical problems of low positioning accuracy and insufficient illuminance for lamp replacement existing in the prior art.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a medical cold light source for automatic lamp replacement, including a frame, on which an optical socket and a transposition plate are fixed, and the transposition plate There are bulbs fixed on it, and there are at least two bulbs. A positioning block and a sensor are fixed on the frame, and positioning pins and small sensing holes are arranged on the transposition plate. The lower end of the plate is provided with an automatic control device. There are at least two light bulbs, so that it is convenient to replace the light bulb after one of the light bulbs is scrapped. The positioning is realized by the cooperation of the positioning block and the positioning pin. The sensor and the small hole on the transposition plate realize the sensing positioning function. The number of positioning devices and sensing devices is the same as the number of bulbs, so that the transposition plate can be rotated accurately. Replace the bulb. The matching method in the positioning device can be that the number of positioning blocks is equal to the number of light bulbs, and there is one positioning pin; or the number of positioning pins is equal to that of light bulbs, and there is one positioning block. Similarly, the matching mode of the sensor device is also the same, or the number of sensors is equal to the number of light bulbs, or the number of small holes is equal to the number of light bulbs. The positioning pin rotates with the transposition plate, and fixes the relative position of the transposition plate after encountering the positioning block fixed on the frame. The positioning accuracy of the transposition board is high, and the positioning error of the transposition board can be controlled below 0.1 degrees, which ensures the concentricity of the bulb and the optical socket, and obtains the maximum illuminance output. After one of the bulbs is damaged, the automatic control system reminds the user to replace the bulb, and automatically rotates the transposition plate to automatically change the lamp. The whole process only takes a few seconds. The degree of automation is high, the safety is good, no burn accidents will occur, and the operation will not be affected.

The automatic control device can be a control circuit to control a motor, or a control circuit to control a hydraulic system and the like. Preferably, the automatic control device includes a motor fixed on the frame and a control circuit for controlling the motor. The cooperation between the motor and the control circuit is easy to realize, and the structure is simple.

Preferably, the control circuit includes a transposition board detection circuit and a filament detection circuit, and both the transposition board detection circuit and the filament detection circuit are connected to the single-chip microcomputer. The filament detection circuit identifies whether the filament of the bulb is good or bad, and sends the signal to the single-chip microcomputer. At the same time, the transposition board detection circuit sends the position signal of the transposition board to the single-chip microcomputer. The single-chip microcomputer analyzes and judges according to the two input signals, and finally decides And control the action of the steering motor and the power supply target of the light source. The control circuit realizes the functions of control and detection, with high degree of automation and accurate operation positioning.

Preferably, the motor is connected with a driving gear, the driving gear is meshed with a transmission gear, and the transmission gear shaft is fixed on the transposition disk. The gear transmission structure has high transmission efficiency and good stability.

Preferably, one end of the extension spring is fixed on the transmission gear, and the fixed shaft of this end is eccentrically arranged on the transmission gear; the other end of the extension spring is fixed on the frame, and the fixed shaft of this end coincides with the center line of the transmission gear. When the transposition plate rotates, after the positioning block is connected with the positioning pin, the extension spring force of the extension spring is used to make the two more closely connected, so as to realize the precise positioning of the transposition plate. One of the two fixed shafts of the extension spring is set eccentrically with the transmission gear, and the other is set concentrically with the transmission gear, which ensures that when the shift plate rotates, the tension spring always moves the positioning pin closer to the positioning block, making the positioning of the shift plate more accurate. precise.

Preferably, there are two bulbs and they are located on the same straight line, the centerline of the positioning pin coincides with the centerline of the bulb, and the positioning pin is located on one side of the bulb. The accuracy of bulb positioning is guaranteed.

Preferably, the number of the sensors and the positioning blocks is the same as that of the light bulbs, the sensors and the positioning blocks are evenly distributed on the transposition plate, the sensors are provided with openings, and the corresponding positions of the transposition plate are provided with small holes. When the rotation of the transposition plate reaches the predetermined position, that is, after the two bulbs rotate exactly 180 degrees, the small hole is just in the opening of the sensor, and the infrared rays emitted by the sensor pass through the small hole to the other end to be received, thereby detecting the position of the transposition plate. The precise position makes the positioning of the transposition plate more accurate.

Therefore, the automatic lamp-changing medical cold light source of the present utility model has the following advantages: 1. Utilize the control circuit and the motor to realize the automatic control of the bulb conversion, with high degree of automation, short operation time, and improved operation efficiency; 2. Motor-driven replacement The position plate rotates, the lamp is automatically changed, and the safety and stability are good; 3. Using the cooperation of the positioning block, the positioning pin and the extension spring, the sensor is accurately tested, and the positioning accuracy is high and the accuracy is good.

Description of drawings:

Fig. 1 is a schematic diagram of the overall structure of a medical cold light source with automatic lamp replacement of the present invention.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a bottom view of Fig. 1 .

FIG. 4 is a schematic cross-sectional view of the sensor part in FIG. 1 .

FIG. 5 is a schematic diagram of circuit control in FIG. 1 .

Specific implementation examples:

Below through embodiment, in conjunction with accompanying drawing, the technical scheme of utility model is described further in detail.

Example:

As shown in the accompanying drawings 1 to 2, a medical cold light source with automatic lamp replacement includes a frame 2, which is in the shape of an "L". The vertical direction of the frame 2 is fixed with an optical jack 1, and a Transposition plate 7, transposition plate 7 is circular. Two bulbs 3 and bulb 4 are fixed on the transposition plate 7, the bulbs 3 and the bulbs 4 are located at the center of the transposition plate 7 and distributed symmetrically, the outside of the bulb 4 is provided with a positioning pin 5, and the center line of the positioning pin 5 is aligned with the transposition The centerlines of the panels 7 coincide. On the frame 2, there are two positioning blocks 6, 14, sensors 15 and 16 alternately and evenly distributed. The positioning blocks are "L" shaped, one end is fixed on the frame 2, and the other end is suspended from the transposition plate 7. above. Sensor is " U " shape, and transposition plate 7 passes the opening of sensor, is provided with the aperture 71 that can pass through for infrared ray on transposition plate simultaneously, and the included angle of aperture 71 and positioning pin 5 is 90 ° (as Figure 4). The bottom of the transposition plate 7 is provided with an automatic control device, and the automatic control device includes a motor 9 and a control circuit positioned at the bottom of the frame 2 . A driving gear 8 is fixed on the output shaft of the motor 9, and the driving gear 8 meshes with the transmission gear 10, and the transmission shaft of the transmission gear 10 passes through the horizontal end face of the frame 2 and is fixed below the transposition plate 7. A fixed shaft 11 is eccentrically arranged on the transmission gear 10, one end of the extension spring 12 is fixed on the fixed shaft 11, and the other end of the extension spring 12 is fixed on the fixed shaft 13 on the frame 2, and the fixed shaft 13 on the frame 2 The centerline of the shaft 13 coincides with the centerline of the transmission gear 10 (as shown in FIG. 3 ). The control circuit includes a transposition detection circuit 17 and a filament detection circuit 18, both circuits are connected to the single-chip CPU 19, and the single-chip microcomputer 19 controls the motor 9, thereby controlling the rotation of the transposition plate 7. Filament detection circuit 18 identifies whether the filaments of bulb 3 and bulb 4 are good or bad, and sends the signal to single-chip microcomputer 19. At the same time, transposition detection circuit 17 sends the position signal of transposition plate 7 to single-chip microcomputer 19. The single-chip microcomputer 19 analyzes and judges according to the two input signals, and finally determines and controls the action of the steering motor 9 and the power supply target of the light source 20 (as shown in FIG. 5 ).

The working principle of the utility model is as follows:

When the light bulb 3 was working normally, the power supply supplied power to the light bulb 3, the light bulb 4 did not supply power, the motor 9 did not supply power, the transposition plate 7 did not move, and the positioning pin 5 of the transposition plate 7 was close to the positioning block 6 under the tension of the extension spring 12 .

When the bulb 3 fails, the filament detection circuit sends a "bulb broken filament signal" to the CPU, and the CPU sends a lamp change instruction, the motor 9 rotates forward, the transposition plate 7 rotates 180° counterclockwise, the sensor 16 sends a signal of the corner being in place, and the motor 9 Power outage stops working. At the same time, the light bulb power supply circuit is switched to supply power to the light bulb 4 . The positioning pin 5 on the transposition plate 7 is close to the positioning block 14 under the pulling force of the extension spring 12. Under the working state of the bulb 4, the CPU also sends a signal to make the indicator light on the panel flash, reminding the user to replace the bulb 3 after the operation is over. .

After the bulb 3 has been replaced, when the power is turned on, the filament detection circuit 18 gives the CPU a "bulb 3 intact signal", and the CPU sends a lamp change instruction, the motor 9 reverses, the transposition plate 7 rotates 180° clockwise, and the sensor 15 sends a rotation angle signal in place, the motor 9 is powered off and stops working. At the same time, the light bulb power supply circuit is switched to supply power to the light bulb 3 . The positioning pin 5 on the transposition plate 7 is close to the positioning block 6 under the pulling force of the extension spring 12 . The panel lights stop blinking.

Before bulb 3 faults are not discharged, bulb 4 is also damaged when working, and then the alarm buzzer sounds to inform that this cold light source has failed to work normally.

The specific embodiments described herein are only examples to illustrate the concept of the present utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (8)

1. move the lamp Medical Cold Light Source certainly for one kind, comprise frame, be fixed with light jack and transpositing plate on the frame, be fixed with bulb on the described transpositing plate, it is characterized in that: described bulb is at least two, be fixed with locating piece and transducer on described frame, described transpositing plate is provided with alignment pin and sensing aperture, is provided with automatic control equipment in the lower end of described transpositing plate.

2. according to claim 1 a kind of from moving the lamp Medical Cold Light Source, it is characterized in that: described automatic control equipment comprises motor that is fixed on the frame and the control circuit of controlling motor.

3. according to claim 2 a kind of from moving the lamp Medical Cold Light Source, it is characterized in that: described control circuit comprises transpositing plate testing circuit and filament testing circuit, and transpositing plate testing circuit and filament testing circuit all are connected on the single-chip microcomputer.

4. according to claim 2 a kind of from moving the lamp Medical Cold Light Source, it is characterized in that: described motor is connecting driven wheel, the driven wheel travelling gear that has been connected with a joggle, and driving gearshaft is fixed on the transposition plate.

5. according to claim 4 a kind of from moving the lamp Medical Cold Light Source, it is characterized in that: be fixed with an end of extension spring on the described travelling gear, the fixed axis of this end is eccentrically set on the travelling gear; The other end of extension spring is fixed on the frame, the fixed axis of this end and the central lines of travelling gear.

6. move the lamp Medical Cold Light Source certainly according to described any one of claim 1 to 5, it is characterized in that: described bulb is two and is located along the same line, the center line of alignment pin and the central lines of bulb, and alignment pin is positioned at a side of bulb.

7. move the lamp Medical Cold Light Source certainly according to described any one of claim 1 to 5, it is characterized in that: described transducer is identical with the number and the bulb of locating piece, described transducer and locating piece are staggered to be distributed on the transpositing plate, transducer is provided with opening, is provided with aperture in the relevant position of transpositing plate.

8. according to claim 6 any one moved the lamp Medical Cold Light Source certainly, it is characterized in that: described transducer and locating piece are staggered to be distributed on the transpositing plate, described transducer and locating piece are staggered to be distributed on the transpositing plate, transducer is provided with opening, is provided with aperture in the relevant position of transpositing plate.

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