CN216557035U - Handle adjusting device - Google Patents

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a handle adjusting device which comprises a handle fixing disc, a handle rotating shaft sleeve, a handle rotating shaft cover, an optical sensor and a shading sheet; a handle rotating shaft sleeve is fixed on a central hole of the handle fixing disc, a handle rotating shaft is arranged in the handle rotating shaft sleeve, the shading sheet is fixed on a handle rotating shaft cover, and the handle rotating shaft cover is fixed on the handle rotating shaft; the optical sensing device comprises a sensor circuit board and a plurality of optical sensors arranged on the sensor circuit board, and the light shielding sheet comprises a light shielding disc and a blocking sheet vertically arranged at the outer edge of the light shielding disc; when the light shielding sheet rotates, the blocking sheet and the optical sensor generate displacement, and the optical sensor is triggered or not triggered. The utility model has convenient, simple and accurate operation.

Description

Handle adjusting device

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a handle adjusting device.

Background

At present, a handle of the operating shadowless lamp is mainly used for grasping when the position of a lamp holder is adjusted and realizing a mechanical light spot adjusting function. Realize mechanical type facula through twist grip and adjust, there are reciprocal precision poor, the location is inaccurate when adjusting in prior art handle adjusting device, and the regulation speed is shortcoming such as slow for the actual operation is complicated, inaccurate, is not convenient for manipulate, and function control is single.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of inconvenient and inaccurate operation, complex operation and single function of the handle adjusting device in the prior art, the utility model provides the handle adjusting device which is convenient and accurate to operate.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a handle adjusting device comprises a handle fixing disc, a handle rotating shaft sleeve, a handle rotating shaft cover, an optical sensing device and a shading sheet;

a handle rotating shaft sleeve is fixed on a central hole of the handle fixing disc, a handle rotating shaft is arranged in the handle rotating shaft sleeve, the shading sheet is fixed on a handle rotating shaft cover, and the handle rotating shaft cover is fixed on the handle rotating shaft;

the optical sensing device comprises a sensor circuit board and a plurality of optical sensors arranged on the sensor circuit board, and the light shielding sheet comprises a light shielding disc and a blocking sheet vertically arranged at the outer edge of the light shielding disc; when the light shielding piece rotates, the blocking piece and the optical sensor generate displacement, and the optical sensor is triggered or not triggered.

Preferably, the upper end of the handle rotating shaft is provided with a limiting pin, the upper end of the handle rotating shaft sleeve is provided with a limiting groove, and the limiting pin is located in the limiting groove.

Further preferably, the limiting groove is a fan-shaped notch limiting groove, and the opening angle of the limiting groove is twice of the included angle between the baffle and the adjacent sensor in the system reset state.

Preferably, the light shielding sheet is connected to the handle fixing disc through a tension spring and can rotate axially under the rotation driving of the handle rotating shaft.

Preferably, the number of the blocking pieces is two, and the number of the optical sensors is two; the two optical sensors are symmetrically arranged on a circumference which takes the central axis of the light shielding sheet as the center of a circle and the distance between the blocking sheet and the central axis of the light shielding sheet as the radius.

Preferably, the joint of the handle rotating shaft and the handle rotating shaft sleeve is provided with an upper bearing and a lower bearing, and the lower bearing is provided with a shaft which is fixed on the handle rotating shaft through an elastic retainer ring.

Preferably, the handle rotating shaft is provided with a wave bead screw hole, the inner side of the handle rotating shaft sleeve is correspondingly provided with a limit hole of the wave bead screw, and the wave bead screw is arranged in the wave bead screw hole.

The handle adjusting device comprises a handle rotating shaft, a handle rotating shaft sleeve, a rotating shaft connecting cover, a shading sheet, a sensor circuit board, a tension spring and a handle fixing disk, wherein the handle fixing disk and the handle rotating shaft sleeve are provided with center holes and are fastened by screws, the handle rotating shaft penetrates through the center holes of the handle fixing disk and the handle rotating shaft sleeve, a limiting part is arranged on the handle rotating shaft, the upper end of the handle rotating shaft sleeve is provided with a notch part which is a limiting groove, the shading sheet is fixed on the rotating shaft connecting cover by screws, the rotating shaft connecting cover is connected to the top end of the handle rotating shaft by screws, and the shading sheet is connected to the handle fixing disk by the tension spring and can axially rotate under the driving of the rotation of the handle rotating shaft. The outer edge of the light shading sheet is provided with two vertical blocking sheets which form a certain included angle relative to the central axis. The number of the sensors used in the handle adjusting device is two, and the number of the vertical blocking pieces on the shading sheet is also two. The handle adjusting device also comprises a sensor circuit board, wherein the two sensors are photoelectric sensors and are arranged on the sensor circuit board, are positioned on a circumference which takes the central shaft of the light shielding sheet as the center of a circle and takes the distance from the vertical separation blade of the light shielding sheet to the central shaft as the radius, and are distributed at an angle of 180 degrees. The sensor circuit board is arranged above the shading sheet in parallel, and the mounting height of the sensor circuit board can trigger the sensor when the shading sheet rotates and cannot interfere with the sensor. When the rotating shaft of the handle is rotated to enable the vertical blocking piece to be located at the sensor triggering position, the sensor can be triggered to work. When the handle rotating shaft is not applied with external force (system reset), the limiting part is positioned at the central position of the limiting groove, and the two vertical blocking pieces of the shading piece are positioned at one side of the two sensors, and the deflection angles relative to the two sensors are respectively equal. The handle adjusting device also comprises bearings which are sleeved on the handle rotating shaft and are arranged in a central hole of the handle rotating shaft sleeve, wherein the bearings are arranged at the upper part and the lower part respectively, and the lower bearing is provided with a shaft which is fixed on the handle rotating shaft by an elastic retainer ring. The upper part of the handle rotating shaft is provided with a limiting pin, the corresponding position of the upper end of the handle rotating shaft sleeve is provided with a fan-shaped notch limiting groove, and the opening angle of the fan-shaped limiting groove is twice of the included angle between the vertical separation blade and the adjacent sensor in the system reset state. The middle position of the upper bearing and the lower bearing of the handle rotating shaft is provided with a screw hole passing through a central shaft of the rotating shaft, the corresponding position of the handle rotating shaft sleeve is provided with two holes, the two holes and the screw hole are coaxial when the system is reset, a ball screw is arranged in the screw hole of the handle rotating shaft, the two holes corresponding to the handle rotating shaft sleeve are one big hole and one small hole, the diameter of the big hole is larger than that of the screw hole, and the diameter of the small hole is smaller than that of the ball screw. The position of the bead screw can be adjusted by passing through the large hole of the handle rotating shaft sleeve, so that the steel ball of the bead screw is higher than the outer diameter of the handle rotating shaft and is pressed on the inner circumferential surface of the handle rotating shaft sleeve, and the steel ball of the bead screw is pressed on the small hole of the handle rotating shaft sleeve when the system is reset. The handle adjusting device is provided with one tension spring, and the tension spring is respectively connected and fixed with the shading sheet and the handle fixing disc through tension spring fixing screws. The connection position of the tension spring and the shading sheet is positioned on a vertical line of a connecting line between the two vertical blocking sheets and the opposite side of the connecting line relative to the central rotating shaft.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model can more accurately and rapidly control and adjust the parameter function of the shadowless lamp, the tension spring can realize convenient and effective reset operation, the bearing provides comfortable operation feeling, and single-group function single-press and continuous-press control such as spot size, illumination intensity, color temperature and the like can be realized by setting corresponding function software of the trigger sensor. Therefore, the shadowless lamp handle adjusting device is convenient to operate, accurate, rapid, flexible to use and comfortable in hand feeling.

Drawings

FIG. 1 is a perspective exploded view of the handle adjustment assembly of the present invention;

FIG. 2 is a perspective assembly view of the handle adjustment mechanism of the present invention;

FIG. 3 is a partially assembled schematic view of the handle adjustment apparatus of the present invention;

FIG. 4 is a sectional view showing the internal structure of the handle adjusting means of the present invention;

reference numerals:

1. a handle shaft; 2. a handle spindle cover; 3. a shading sheet; 4. a light sensor; 5. a sensor circuit board; 6. A tension spring; 7. a bearing; 8. a handle fixing disc; 9. a handle rotating shaft sleeve; 10. a spacing pin; 11. a tension spring is used for fixing the screw; 12. a circlip for the shaft; 13. a wave bead screw; 14. a limiting groove; 15. a ball of the wave ball screw; 16. a baffle plate.

Detailed Description

The utility model is described in further detail below with reference to the figures and the detailed description.

Example 1

As shown in fig. 1-4, a handle adjusting device comprises a handle fixing disc 8, a handle rotating shaft sleeve 9, a handle rotating shaft 1, a handle rotating shaft cover 2, an optical sensing device and a light shielding sheet 3;

a handle rotating shaft sleeve 9 is fixed on a central hole of the handle fixing disc 8, a handle rotating shaft 1 is arranged in the handle rotating shaft sleeve 9, the shading sheet 3 is fixed on a handle rotating shaft cover 2, and the handle rotating shaft cover 2 is fixed on the handle rotating shaft 1;

the optical sensing device comprises a sensor circuit board 5 and a plurality of optical sensors 4 arranged on the sensor circuit board 5, and the light shielding sheet 3 comprises a light shielding disc 15 and a blocking sheet 16 vertically arranged at the outer edge of the light shielding disc; when the light shielding sheet 3 rotates, the blocking sheet 16 and the optical sensor 4 generate displacement, and the optical sensor 4 is triggered or not triggered.

The upper end of the handle rotating shaft 1 is provided with a limiting pin 10, the upper end of the handle rotating shaft sleeve 9 is provided with a limiting groove 14, and the limiting pin 10 is located in the limiting groove 14.

The limiting groove 14 is a fan-shaped notch limiting groove, and the opening angle of the limiting groove 14 is twice of the included angle between the baffle and the adjacent sensor in the system reset state.

The light shading sheet 3 is connected to the handle fixing disc 8 through the tension spring 6 and can rotate axially under the rotation drive of the handle rotating shaft 1.

The number of the baffle plates 16 is two, and the number of the optical sensors 4 is two; the two optical sensors 4 are symmetrically arranged on a circumference which takes the central axis of the light shielding sheet 3 as the center of a circle and the distance from the baffle 16 to the central axis of the light shielding sheet 3 as the radius.

The joint of the handle rotating shaft 1 and the handle rotating shaft sleeve 9 is provided with an upper bearing and a lower bearing 7, and the lower bearing 7 is provided with a shaft elastic retainer ring 12 fixed on the handle rotating shaft 1.

The handle rotating shaft 1 is provided with a wave bead screw hole, the inner side of the handle rotating shaft sleeve 9 is correspondingly provided with a limiting hole of a wave bead screw 13, and the wave bead screw 13 is arranged in the wave bead screw hole.

Fig. 1 is a perspective exploded view of the present handle adjustment device, and fig. 2 is a perspective assembled view of the handle adjustment device shown in fig. 1. The light shading sheet 3 is a roughly circular disc, the outer edge of the light shading sheet is provided with two vertical blocking sheets forming a certain included angle relative to the central shaft, the handle fixing disc 8 is a circular disc with the diameter larger than that of the light shading sheet 3, and the central part of the handle fixing disc is provided with a central hole. The handle rotating shaft sleeve 9 is a hollow cylinder with an outer diameter smaller than the shading sheet and an inner diameter larger than the handle rotating shaft. The handle rotating shaft sleeve 9 is fixed on the handle fixing disc 8 through a countersunk screw, the handle rotating shaft l is provided with an axial long cylindrical structure relative to the handle fixing disc 8, the lower end part of the handle rotating shaft l can be used for applying force to rotate, and the handle rotating shaft sleeve 9 and the handle fixing disc 8 penetrate through from top to bottom. The handle rotating shaft cover 2 and the shading sheet 3 are connected to the handle fixing disc 8 through the tension spring 6 and can axially rotate under the driving of the handle rotating shaft l. Fig. 3 is a partial assembly diagram, in which a limiting pin 10 is radially disposed at an upper end portion of the handle rotating shaft l, a fan-shaped notch limiting groove 14 is disposed at an upper end of the handle rotating shaft sleeve 9, and the limiting pin 10 on the handle rotating shaft l is located in the middle of the fan-shaped limiting groove 14 of the handle rotating shaft sleeve 9 when the system is reset. As shown in fig. 4, the handle rotating shaft l is installed in the central hole of the handle rotating shaft sleeve 9 through an upper bearing and a lower bearing, the lower bearing 7 is fixed by a spring retainer ring 12 for a shaft, and the handle rotating shaft l can only do low-friction axial rotation in the central hole of the handle rotating shaft sleeve 9 through the rolling of the bearings. The middle of the upper bearing position and the lower bearing position of the handle rotating shaft l is provided with a radial screw hole passing through a central shaft and used for installing a bead screw 13, a large pair of small pair of through holes are arranged at the corresponding position of the handle rotating shaft sleeve 9, the diameter of the large hole is larger than that of the screw hole, and the diameter of the small hole is smaller than that of a steel ball 15 of the bead screw. The wave bead screw 13 can be adjusted through the big hole of the handle rotating shaft sleeve 9, so that the wave bead screw steel ball 15 is pressed on the inner circumferential surface of the handle rotating shaft sleeve 9, and the wave bead screw steel ball 15 is positioned at the small hole of the handle rotating shaft sleeve 9 when the system is reset, thereby reducing overshoot caused by the reset inertia of the tension spring. As shown in fig. 2, one end of the tension spring 6 is fixed with the handle rotating shaft cover 2 and the light shielding sheet 3 through a tension spring fixing screw 11, and the other end is fixed with the handle fixing disc 8. The connection position of the tension spring 6 and the shading sheet 3 is positioned on a vertical line of a connecting line between the two vertical blocking sheets and the opposite side of the connecting line relative to the central rotating shaft. In the reset state of the system, the central axis of the tension spring 6 and the central axis of the limit pin 10 are in the same plane, and the vertical baffle and the sensor 4 are symmetrical about the plane. The angle of the scallop shaped indentation defining groove 14 should be twice the angle of the perpendicular flap to the sensor 4.

When the force is applied to the handle rotating shaft l to enable the handle rotating shaft l to rotate leftwards or rightwards to the limit position, the corresponding light shielding sheet 3 can be driven to rotate, the vertical blocking piece can enter the triggering area corresponding to the optical sensor 4 to generate a triggering signal, and after the applied force is removed, the handle rotating shaft l drives the light shielding sheet 3 to return to the reset state under the acting force of the tension spring 6. The optical sensor 4 can be continuously triggered by rotating to the extreme position for keeping, and the sensor can also be triggered by rotating for multiple times at a small angle after rotating to the extreme position, so that the function control of single pressing and continuous pressing is realized. The rotating hand feeling and the inertia overshoot during the return can be realized by adjusting the tension of the tension spring 6 and the position of the bead screw 13. The above is a detailed scheme of the shadowless lamp handle adjusting device design. The device has the advantages of convenient operation, accurate and quick control, flexible use and comfortable hand feeling.

The utility model drives the shading sheet to trigger the photoelectric sensor through the tension spring, thereby realizing the function of the function control key; the two bearings are arranged to ensure smooth hand feeling and smoothness, and inertia overshoot during recovery is reduced by the aid of the wave ball screw. The shading adjusting handle part is not electrically connected with the sensor circuit board, so that the shading adjusting handle part is more convenient to be compatible with a shadowless lamp handle which only realizes the grasping of the position of the lamp holder.

In the utility model, the direction of the blocking sheet and the photoelectric sensor is vertical to the handle fixing disc, and the blocking sheet and the photoelectric sensor can be parallel or form a certain angle. The rotation angle of the handle rotating shaft may be different. The control component is not limited to the photoelectric sensor, and can be a touch key, a limit switch and the like. The wave bead return positioning structure can also adopt a mode of pressing a steel ball through a spring, and the return positioning point on the inner circumferential surface of the handle rotating shaft sleeve 9 can also be a strip-shaped groove parallel to the central shaft of the handle rotating shaft sleeve 9.

Conventional technical knowledge in the art can be used for the details which are not described in the present invention.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (7)

1. A handle adjusting device is characterized by comprising a handle fixing disc, a handle rotating shaft sleeve, a handle rotating shaft cover, an optical sensing device and a shading sheet;

a handle rotating shaft sleeve is fixed on a central hole of the handle fixing disc, a handle rotating shaft is arranged in the handle rotating shaft sleeve, the shading sheet is fixed on a handle rotating shaft cover, and the handle rotating shaft cover is fixed on the handle rotating shaft;

the optical sensing device comprises a sensor circuit board and a plurality of optical sensors arranged on the sensor circuit board, and the light shielding sheet comprises a light shielding disc and a blocking sheet vertically arranged at the outer edge of the light shielding disc; when the light shielding piece rotates, the blocking piece and the optical sensor generate displacement, and the optical sensor is triggered or not triggered.

2. The handle adjusting device according to claim 1, wherein a limiting pin is arranged at the upper end of the handle rotating shaft, a limiting groove is arranged at the upper end of the handle rotating shaft sleeve, and the limiting pin is positioned in the limiting groove.

3. The handle adjustment device according to claim 2, wherein the limiting groove is a fan-shaped notch limiting groove, and the opening angle of the limiting groove is twice the included angle between the blocking piece and the adjacent sensor in the reset state of the system.

4. The handle adjusting device according to claim 1, wherein the light shielding plate is connected to the handle fixing plate by a tension spring and can be axially rotated by the rotation of the handle rotating shaft.

5. The handle adjustment device of claim 1, wherein the number of the blocking pieces is two, and the number of the light sensors is two; the two optical sensors are symmetrically arranged on a circumference which takes the central axis of the light shielding sheet as the center of a circle and the distance between the blocking sheet and the central axis of the light shielding sheet as the radius.

6. The handle adjusting device according to claim 1, wherein the joint of the handle rotating shaft and the handle rotating shaft sleeve is provided with an upper bearing and a lower bearing, and the lower bearing is fixed on the handle rotating shaft by adopting an elastic retaining ring for a shaft.

7. The handle adjusting device according to claim 1, wherein a wave bead screw hole is provided in the handle rotating shaft, a limit hole for a wave bead screw is provided at a corresponding position inside the handle rotating shaft sleeve, and the wave bead screw is embedded in the wave bead screw hole.

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