Touch pen

Abstract

The utility model relates to a touch pen, which is used for operating a display device with a laser radar, and comprises a pen holder and a pen point, and one end of the pen holder is telescopic; the pen point comprises a touch control part and a connecting part which are connected with each other, the touch control part is spherical, the connecting part is cylindrical, the diameter of the connecting part is smaller than that of the touch control part, and the end, away from the touch control part, of the connecting part is connected with the telescopic end of the pen holder; wherein the pen point is configured in a manner that laser irradiates the pen point and can return along the same path after being reflected by the pen point, and the total length of the pen point is larger than the distance between a scanning surface, in front of a screen, of the radar and the screen. By means of the structural form, the safety of the screen during touch control is guaranteed, meanwhile, no matter what angle a user clicks the screen, the area and the position scanned by radar waves are consistent, positioning errors cannot be caused, and therefore the positioning accuracy during touch control is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment of laser radar, in particular to a touch pen. Background Art

[0002] With the development of intelligent driving, a technology that uses laser radar to achieve screen touch has emerged. This touch screen is cheap, easy to install, and does not affect the color and appearance of the screen. Specifically, the laser radar touch technology uses a motor to drive the laser transceiver to rotate 360 ​​degrees, forming a laser scanning surface on the screen surface. When an object clicks on the screen, it will block the laser radar's scanning line, thereby obtaining the specific position coordinates of the object. The position coordinates then send the touch event to the host system via Bluetooth or USBHID protocol. The USB HID protocol can be plug-and-play.

[0003] The laser radar currently used in the market for this type of planar positioning scenario is a single-plane single-line radar. Theoretically, the light beam emitted by the laser radar is emitted horizontally, so its scanning surface should be a plane. However, due to production process limitations, the actual assembled radar has a beam emission angle with a pitch angle, and the actual beam is inclined to the horizontal plane, resulting in the scanning surface not being a horizontal plane, but a conical surface. Since the scanning surface of the laser radar light in the prior art is a conical surface, the height of the scanning surface is different at different places on the screen. When the object is lower than this scanning surface, the radar cannot detect it.

[0004] The stylus in the related art usually has a conical head. When the stylus is stretched, the connection between the stylus head and the pen shaft is small. When actually touching the screen, the laser may not be able to scan the pen tip because the scanning height is higher than the pen tip, resulting in positioning failure or inaccurate positioning. Utility Model Content

[0005] Based on this, it is necessary to provide a stylus pen for a lidar touch screen to address the technical problem in the prior art that the stylus pen used in the lidar touch screen is prone to positioning failure or inaccurate positioning.

[0006] A stylus pen is used to operate a display device equipped with a laser radar, the stylus pen comprising:

[0007] The pen holder is retractable at one end;

[0008] The pen tip comprises a touch portion and a connecting portion connected to each other, wherein the touch portion is spherical, the connecting portion is cylindrical, the diameter of the connecting portion is smaller than the diameter of the touch portion, and one end of the connecting portion away from the touch portion is connected to the retractable end of the pen holder;

[0009] The pen tip is configured so that the laser irradiates the pen tip, and the laser can return along the original path after being reflected by the pen tip. The total length of the pen tip is greater than the distance between the scanning surface of the radar in front of the screen and the screen.

[0010] The technical solution provides a stylus pen for operating a display device equipped with a laser radar, wherein one end of the pen holder is set to be retractable so that the length of the entire stylus pen can be adjusted, so that different users can adjust the length of the stylus pen according to their own preferences when using it in different scenarios. The touch portion in the pen head is used to touch the screen to operate the display device; the connecting portion is used to realize the connection between the touch portion and the pen holder. The touch portion is constructed into a spherical shape so that when the touch portion touches the screen of the display device, it will not cause damage to the screen. The connecting portion is set to a cylindrical shape to facilitate connection with the pen holder, and in addition, it is also conducive to making the appearance of the pen head more beautiful. The pen head is connected to the retractable end of the pen holder to adjust the total length of the pen head and the pen holder. The pen head of the stylus pen is set so that when the laser is irradiated on the pen head, the laser light can be reflected by the pen head and return to the original path, thereby realizing the positioning of the touch position of the stylus pen. By setting the total length of the pen tip to be greater than the distance between the scanning surface of the radar in front of the screen and the screen, the pen tip can receive the laser light of the radar and return the laser light along the original path, thereby ensuring the accuracy of positioning. With the above structure, the screen safety during touch control can be ensured while ensuring the accuracy of positioning during touch control.

[0011] In one embodiment, the pen holder comprises:

[0012] The pen body is constructed with a storage cavity having an opening at one end;

[0013] A telescopic rod, the length of which is retractable, one end of which is fixed in the receiving cavity, and the connecting portion is connected to an end of the telescopic rod which is away from the cavity bottom wall;

[0014] When the telescopic rod is retracted in the storage cavity, the end faces of the connecting portion and the pen body facing each other fit together.

[0015] By providing a receiving cavity with an opening at one end on the pen body, the telescopic rod can be completely retracted into the receiving cavity, thereby realizing the storage of the telescopic rod, so that when the stylus pen is not in use, the retractable rod can be stored. When the retractable rod is retracted into the receiving cavity, the end faces of the connecting portion and the pen body facing each other fit together, which, on the one hand, makes the stylus pen in the storage state more beautiful; on the other hand, in the storage state, the end faces of the connecting portion and the pen body facing each other can limit each other in the radial direction, thereby improving the strength and reliability when stored.

[0016] In one embodiment, the diameter of the connecting portion is the same as the diameter of the pen body.

[0017] The diameter of the connecting part is set to be the same as the diameter of the pen body, so that when the stylus pen is in the storage state, the entire pen body except the touch part is flat, which makes the appearance more beautiful and the feel of use is also better.

[0018] In one embodiment, the connecting portion and the end of the telescopic rod are fixedly connected by threads.

[0019] By fixing the connecting part and the telescopic rod through threads, the structure is simple, the processing is convenient, and the connection is reliable.

[0020] In one embodiment, the connecting portion comprises:

[0021] The connecting body has a mounting hole at one end thereof facing away from the touch control portion;

[0022] The fixing piece is embedded in the installation hole. The fixing piece is provided with a threaded hole. The telescopic rod is threadably matched with the threaded hole.

[0023] By embedding a fixing piece in the mounting hole of the connecting body, the connecting body and the fixing piece can be set to different materials. For example, the connecting body can be made of a material with high elasticity, while the fixing piece is made of a metal material. In this way, while ensuring the elastic performance of the contact between the touch part and the screen, the connection strength between the connecting part and the telescopic rod can be ensured, so that the connecting body can absorb the impact performance on the touch part and ensure the reliability of the connection with the telescopic rod.

[0024] In one embodiment, the touch control part and the connection body are configured to be integrally formed by injection molding. The touch control part and the connection body are configured to be integrally formed by injection molding, which has a simple process, is suitable for batch processing, saves parts, and has high bonding strength.

[0025] In one embodiment, the fixing part is configured as a metal product, and the fixing part is prefabricated in the connecting body to be formed. The fixing part is configured as a metal product, which has the characteristic of high strength. The fixing part is prefabricated in the preset body to be formed, so that when the touch part and the connecting body are injection molded, they are integrally formed with the touch part and the connecting body, which reduces the processing steps of the pen tip and can also improve the bonding strength of the connection between the connecting body and the fixing part.

[0026] In one embodiment, the touch part and the connecting body are configured to be made of silicone material. The touch part and the connecting part are made of silicone material, so that the touch part has a certain strength and a certain elasticity, so that when the touch part touches the screen, the impact of the touch part on the screen can be absorbed, thereby preventing damage to the screen.

[0027] In one embodiment, the outer surface of the pen tip is configured as a matte surface. The outer surface of the pen tip is set to a matte surface so that when the pen tip touches the screen, when the laser of the radar scans the pen tip, the laser is reflected back along the original path through the matte surface of the pen tip, so that the radar can receive the signal of the return beam, thereby ensuring the accuracy of positioning.

[0028] In one embodiment, the diameter of the touch portion is no greater than 20 mm. The diameter of the touch portion is set to be no greater than 20 mm, so as to ensure positioning accuracy while making the appearance of the pen tip more beautiful.

[0029] Beneficial effects of the utility model:

[0030] The utility model provides a stylus pen for operating a display device equipped with a laser radar, wherein one end of the pen holder is set to be retractable so that the length of the entire stylus pen can be adjusted, so that different users can adjust the length of the stylus pen according to their own preferences when using it in different scenarios. The touch portion in the pen head is used to touch the screen to operate the display device; the connecting portion is used to realize the connection between the touch portion and the pen holder. The touch portion is constructed in a spherical shape so that when the touch portion touches the screen of the display device, it will not cause damage to the screen. The most important thing is that the touch portion is designed in a spherical shape. No matter at what angle the user clicks the screen, the area and position scanned by the radar wave are consistent, and no positioning error will be caused. The connecting portion is set in a cylindrical shape to facilitate connection with the pen holder, and in addition, it is also conducive to making the appearance of the pen head more beautiful. The pen head is connected to the retractable end of the pen holder to adjust the total length of the pen head and the pen holder. The pen head of the stylus pen is set so that when the laser is irradiated on the pen head, the laser light can be reflected by the pen head and return to the original path, thereby realizing the positioning of the touch position of the stylus pen. By setting the total length of the pen tip to be greater than the distance between the scanning surface of the radar in front of the screen and the screen, the pen tip can receive the laser light of the radar and return the laser light along the original path, thereby ensuring the accuracy of positioning. With the above structure, the screen safety during touch control can be ensured while ensuring the accuracy of positioning during touch control. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic diagram of the structure of a pen tip provided by an embodiment of the utility model;

[0032] FIG2 is a schematic structural diagram of a pen tip provided by an embodiment of the utility model at another viewing angle;

[0033] FIG3 is a cross-sectional view of a pen tip provided in one embodiment of the utility model;

[0034] FIG4 is a schematic diagram of the overall structure of a touch pen provided by an embodiment of the present invention when it is in a storage state;

[0035] FIG5 is a schematic diagram of the overall structure of a touch pen provided by an embodiment of the present invention when it is in a stretched state;

[0036] FIG6 is a schematic diagram of the position between the screen and the stylus when the stylus touches the screen according to an embodiment of the present invention;

[0037] FIG. 7 is a side view of the position between the screen and the stylus when the stylus provides an embodiment of the present invention touches the screen.

[0038] Reference numerals:

[0039] Pen holder 100; pen holder body 110; telescopic rod 120; pen head 200; touch part 210; connecting part 220; connecting body 221; fixing part 222; screen 300; radar 400. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0046] With the development of science and technology, display devices such as televisions, commercial large screens, and display screens are widely used in public places such as showrooms, conference rooms, classrooms, and homes. With the development of intelligent driving, a technology that uses laser radar to achieve screen touch has emerged. This touch screen has the characteristics of being cheap, easy to install, and not affecting the color and appearance of the screen. At present, the laser radar used for plane positioning scenes on the market is a single-plane single-line radar. The light beam emitted by the laser radar is theoretically emitted horizontally, so its scanning surface should be a plane. However, due to production process limitations, the actual assembled radar has a beam emission angle with a pitch angle, and the actual beam is inclined to the horizontal plane, resulting in the scanning surface not being a horizontal plane, but a conical surface. Since the scanning surface of the laser radar light in the prior art is a conical surface, the height of the scanning surface is different at different places on the screen. When the object is lower than this scanning surface, the radar cannot detect it.

[0047] The stylus in the related art usually has a conical head. When the stylus is stretched, the connection between the stylus head and the pen shaft is small. When actually touching the screen, the laser may not be able to scan the pen tip because the scanning height is higher than the pen tip, resulting in positioning failure or inaccurate positioning.

[0048] Based on this, the utility model provides a stylus pen, which can ensure the safety of the screen when touching and the accuracy of positioning when touching by setting the pen head in a combination of spherical and cylindrical shapes. The touch part is designed to be spherical, so no matter at what angle the user clicks the screen, the area and position scanned by the radar wave are consistent, and no positioning error will be caused.

[0049] Referring to Figures 1 to 7, an embodiment of the utility model provides a stylus pen for operating a display device equipped with a laser radar 400. The stylus pen includes a pen body 100 and a pen tip 200. One end of the pen body 100 is retractable. The pen tip 200 includes a touch portion 210 and a connecting portion 220 connected to each other. The touch portion 210 is constructed in a spherical shape, and the connecting portion 220 is constructed in a cylindrical shape. The diameter of the connecting portion 220 is smaller than the diameter of the touch portion 210. One end of the connecting portion 220 away from the touch portion 210 is connected to the retractable end of the pen body 100. The pen tip 200 is configured so that laser irradiates the pen tip 200, and the laser can return to the original path after being reflected by the pen tip 200. The total length of the pen tip 200 is greater than the distance between the scanning surface of the radar 400 at the far end of the screen 300 and the screen 300.

[0050] The present technical solution provides a stylus for operating a display device equipped with a laser radar 400, wherein one end of the pen holder 100 is set to be retractable so that the length of the entire stylus can be adjusted, so that different users can adjust the length of the stylus according to their own preferences when using it in different scenarios. The touch portion 210 in the pen head 200 is used to touch the screen 300 to operate the display device; the connecting portion 220 is used to achieve the connection between the touch portion 210 and the pen holder 100. The touch portion 210 is constructed in a spherical shape so that when the touch portion 210 touches the screen 300 of the display device, it will not cause damage to the screen 300. The most important thing is that the touch portion 210 is designed in a spherical shape. No matter at what angle the user clicks the screen 300, the area and position scanned by the radar 400 wave are consistent, and no positioning error will be caused. The connecting portion 220 is set in a cylindrical shape to facilitate connection with the pen holder 100. In addition, it is also conducive to making the appearance of the pen head 200 more beautiful. The pen tip 200 is connected to the retractable end of the pen body 100 to adjust the total length of the pen tip 200 and the pen body 100. The pen tip 200 of the stylus pen is set so that when the laser is irradiated on the pen tip 200, the laser light can be reflected by the pen tip 200 and return to the original path, thereby locating the touch position of the stylus pen. By setting the total length of the pen tip 200 to be greater than the distance between the scanning surface of the radar 400 at the far end of the screen 300 and the screen 300, the pen tip 200 can receive the laser light of the radar 400 and return the laser light to the original path, thereby ensuring the accuracy of positioning. Through the above structural form, while ensuring the safety of the screen 300 during touch, the accuracy of positioning during touch can be guaranteed.

[0051] As shown in Figures 6 and 7, it can be understood that in this embodiment, not only the touch portion 210 has the function of receiving laser signals, but the connection portion 220 also has the function of receiving laser signals. For example, when the distance between the scanning surface of the radar 400 at the far end of the screen 300 and the screen 300 is greater than the height of the touch portion 210, the laser signal can be received through the connection portion 220 and the laser can be returned along the original path, which can also ensure that the radar 400 monitors the touch head of the stylus, thereby ensuring the accuracy of positioning.

[0052] It is understandable that in other embodiments, the pen head 200 may not be provided with the connecting portion 220, and the spherical touch portion 210 may be directly connected to the telescopic end of the pen body 100. For different display devices, it is only necessary to set the spherical shape of the touch portion 210 to be larger. In other embodiments, the connecting portion 220 may also be set to a shape such as a hexagonal prism, and is not limited to setting the connecting portion 220 to only a cylindrical shape. It should be noted that in this embodiment, the front of the screen 300 refers to the side of the screen 300 facing the stylus.

[0053] As shown in Figures 4 and 5, in one embodiment, the pen body 100 includes a pen body 110 and a telescopic rod 120, and the pen body 110 is configured with a storage cavity with an opening at one end; the telescopic rod 120 is telescopic in length, one end of the telescopic rod 120 is fixed in the storage cavity, and the connecting portion 220 is connected to the end of the telescopic rod 120 away from the bottom wall of the cavity; wherein, when the telescopic rod 120 is retracted in the storage cavity, the connecting portion 220 and the pen body 110 are in contact with each other at their opposite end faces.

[0054] By providing a receiving cavity with an opening at one end on the pen body 110, the telescopic rod 120 can be completely retracted into the receiving cavity, thereby realizing the storage of the telescopic rod 120, so that when the stylus pen is not in use, the telescopic rod can be stored. When the telescopic rod is retracted into the receiving cavity, the end faces of the connecting portion 220 and the pen body 110 facing each other fit together, which, on the one hand, makes the stylus pen in the storage state more beautiful; on the other hand, in the storage state, the end faces of the connecting portion 220 and the pen body 110 facing each other can limit each other in the radial direction, thereby improving the strength and reliability when stored.

[0055] It is understandable that there is no limitation on the structural form of the telescopic rod 120. The telescopic rod 120 can be set as a nesting doll structure, with multiple sections of sleeves with gradually varying diameters connected end to end in sequence, and adjacent sleeves can slide relative to each other, so that all sleeves can be retracted into the largest sleeve.

[0056] As shown in FIG4 , in one embodiment, the diameter of the connecting portion 220 is the same as the diameter of the pen body 110. The diameter of the connecting portion 220 is set to be the same as the diameter of the pen body 110, so that when the stylus pen is in the storage state, the entire pen body except the touch portion 210 is flat, so that the appearance is more beautiful and the hand feeling is better.

[0057] It should be noted that the shape of the pen body 110 can be set to the same form as the shape of the connecting portion 220, or it can be set to a different form. For example, the pen body 110 can be set to a cylindrical or prism shape, and the connecting portion 220 can be a cylindrical or prism shape. As a preferred embodiment, the shapes of the pen body 110 and the connecting portion 220 are set to the same form, and the sizes of the two are consistent, so that when the stylus pen is in the storage state, the surfaces of the connecting portion 220 and the pen body 110 are flush.

[0058] In one embodiment, the connecting portion 220 is fixedly connected to the end of the telescopic rod 120 by threads. By fixing the connecting portion 220 and the telescopic rod 120 by threads, the structure is simple, easy to process, and has the advantage of reliable connection. Of course, in other embodiments, the telescopic rod 120 and the connecting portion 220 can also be fixedly connected by welding.

[0059] As shown in Figures 1 to 3, in one embodiment, the connecting portion 220 includes a connecting body 221 and a fixing member 222, and the end of the connecting body 221 away from the touch portion 210 is configured with a mounting hole; the fixing member 222 is embedded in the mounting hole, and a threaded hole is provided on the fixing member 222, and the telescopic rod 120 is threadedly matched with the threaded hole.

[0060] By embedding a fixing piece 222 in the mounting hole of the connecting body 221, the connecting body 221 and the fixing piece 222 can be set to different materials. For example, the connecting body 221 can be made of a material with high elasticity, while the fixing piece 222 is made of a metal material. In this way, while ensuring the elastic performance of the contact between the touch part 210 and the screen 300, the connection strength between the connecting part 220 and the telescopic rod 120 can be ensured, so that the connecting body 221 can absorb the impact performance on the touch part 210 and ensure the reliability of the connection with the telescopic rod 120.

[0061] There is no limitation on the connection method between the fixing member 222 and the mounting hole. The fixing member 222 can be fixedly connected to the mounting hole by threaded fit by providing an internal thread on the mounting hole and an external thread on the fixing member 222. Of course, the fixing member 222 can also be fixedly connected to the mounting hole by interference fit.

[0062] In one embodiment, the touch part 210 and the connecting body 221 are configured to be integrally formed by injection molding. The touch part 210 and the connecting body 221 are configured to be integrally formed by injection molding, which has a simple process, is suitable for batch processing, saves parts, and has high bonding strength. The touch part 210 and the connecting body 221 are configured to be made of silicone material. The touch part 210 and the connecting part 220 are made of silicone material, so that the touch part 210 has a certain strength and a certain elasticity, so that when the touch part 210 touches the screen 300, the impact performance of the touch part 210 on the screen 300 can be absorbed, thereby preventing damage to the screen 300.

[0063] In one embodiment, the fixing member 222 is configured as a metal product, and the fixing member 222 is prefabricated in the connecting body 221 to be formed. The fixing member 222 is set as a metal product, which has the characteristic of high strength. The fixing member 222 is prefabricated in the preset body to be formed, so that when the touch part 210 and the connecting body 221 are injection molded, it is integrally formed with the touch part 210 and the connecting body 221, which reduces the processing steps of the pen head 200 and can also improve the bonding strength of the connection between the connecting body 221 and the fixing member 222. Specifically, the material of the fixing member 222 can be stainless steel, aluminum alloy, copper alloy, etc.

[0064] As shown in FIG. 3 , more specifically, a limiting groove is provided in the middle position of the outer peripheral surface of the fixing member 222 , and during injection molding, silicone can be filled into the limiting groove so that the fixing member 222 and the connecting body 221 are limited to each other, thereby ensuring the reliability of the connection between the fixing member 222 and the connecting body 221 .

[0065] In one embodiment, the outer surface of the pen tip 200 is configured as a matte surface. The outer surface of the pen tip 200 is set to a matte surface so that when the pen tip 200 touches the screen 300, when the laser of the radar 400 scans the pen tip 200, the laser is reflected back along the original path through the matte surface of the pen tip 200, so that the radar 400 receives the signal of the return beam, thereby ensuring the accuracy of positioning.

[0066] It should be noted that, in this embodiment, the pen tip 200 should avoid using dark colors such as black to prevent dark colors from absorbing light, and light colors with good reflective properties such as white and gray can be used. In addition, the outer surface of the pen tip 200 should be rougher and should not be set as a mirror surface.

[0067] In one embodiment, the diameter of the touch portion 210 is not greater than 20 mm. The diameter of the touch portion 210 is set to be not greater than 20 mm, so as to ensure the positioning accuracy and make the appearance of the pen head 200 more beautiful.

[0068] For example, the diameter of the touch portion 210 can be set to 20 mm. In this case, the touch portion 210 can meet the display device with a distance of less than 20 mm between the laser scanning surface and the screen 300. When the distance between the laser scanning surface and the screen 300 is greater than 20 mm, positioning can be achieved by scanning the connection portion 220.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A stylus pen for operating a display device equipped with a laser radar, characterized in that: The stylus pen comprises: The pen holder is retractable at one end; The pen tip comprises a touch portion and a connecting portion connected to each other, wherein the touch portion is spherical, the connecting portion is cylindrical, the diameter of the connecting portion is smaller than the diameter of the touch portion, and one end of the connecting portion away from the touch portion is connected to the retractable end of the pen holder; The pen tip is configured so that the laser irradiates the pen tip, and the laser can return along the original path after being reflected by the pen tip. The total length of the pen tip is greater than the distance between the scanning surface of the radar in front of the screen and the screen.

2. The touch pen according to claim 1, characterized in that: The pen holder comprises: The pen body is constructed with a storage cavity having an opening at one end; A telescopic rod, the length of which is retractable, one end of which is fixed in the receiving cavity, and the connecting portion is connected to an end of the telescopic rod which is away from the cavity bottom wall; When the telescopic rod is retracted in the storage cavity, the end faces of the connecting portion and the pen body facing each other fit together.

3. The touch pen according to claim 2, characterized in that: The diameter of the connecting portion is the same as the diameter of the pen body.

4. The touch pen according to claim 2, characterized in that: The connecting portion and the end of the telescopic rod are threadedly fixedly connected.

5. The touch pen according to claim 4, characterized in that: The connecting portion comprises: The connecting body has a mounting hole at one end thereof facing away from the touch control portion; The fixing piece is embedded in the installation hole. The fixing piece is provided with a threaded hole. The telescopic rod is threadably matched with the threaded hole.

6. The touch pen according to claim 5, characterized in that: The touch control portion and the connection body are configured to be integrally formed by injection molding.

7. The touch pen according to claim 6, characterized in that: The fixing piece is configured as a metal product and is prefabricated in the connection body to be formed.

8. The touch pen according to claim 5, characterized in that: The touch control part and the connection body are configured to be made of silicone material.

9. The stylus pen according to any one of claims 1 to 8, characterized in that: The outer surface of the pen tip is configured as a matte surface.

10. The stylus pen according to any one of claims 1 to 8, characterized in that: The diameter of the touch portion is no greater than 20 mm.

Images