TWI492103B - Optical digital pen - Google Patents

Description

Optical stylus

The invention relates to a stylus, in particular to an optical stylus applied to an interactive image sensing system.

With the rapid development of industrial technology, people's dependence on science and technology continues to increase, and various applications in daily life are gradually replaced by electronic systems, which are widely used in teaching, medical, business, design and general applications. For example, electronic whiteboard systems, interactive image sensing systems, virtual imaging systems, and universal touch input systems are all actively developed by the technology industry, with the focus on interactive image sensing systems. Simulate real movements to match people's usage habits and reduce the complexity of surrounding preparation.

In the interactive image sensing system, the position of the writing point is mostly simulated by a light spot, such as an interactive image sensing system applied to an electronic whiteboard, which is input by using a digital input device, such as an optical stylus. In order to simulate the movement of human hands, not only can the writing position and media be removed, but also contribute to the realization of environmental protection. Therefore, the interactive image sensing system has gradually replaced the general whiteboard, blackboard, etc. and is widely used in schools and enterprises for teaching, business, conferences and the like.

However, in the traditional interactive image sensing system, The optical stylus used is used to control the light source in the optical stylus by switching the contact type or the track pressing type switching element. When the user wants to perform the writing action, the pen must be toggled or pressed. The switching element of the body enables the light source of the optical stylus to start to emit light, and when the use is completed, the switching element must be toggled or pressed again, so that the light source of the optical stylus stops emitting light, causing the user to It is necessary to toggle or press the switching element before and after each use, often because the user forgets or neglects the above-mentioned action of turning on or off the switching element, so that the overall use process is not smooth and the energy is wasted, which is not only inconvenient to use, It is even less in line with the needs of modern society for environmental protection. In addition, since the conventional optical stylus uses the switching element to control the conduction of the power supply circuit, the size of the optical stylus is likely to be large in the consideration of the mechanism and circuit design, thereby causing the disadvantage of increasing the manufacturing cost.

Therefore, how to develop an optical stylus that is sufficient to improve the above-mentioned conventional techniques and avoid the use of difficult and wasteful energy, and reduce the manufacturing cost is an urgent problem to be solved.

An optical stylus according to the present invention comprises: a casing, a sleeve, a head, a first circuit board, a light-emitting element, a second circuit board, and a hollow cylinder. The outer casing has an accommodation space. One end of the sleeve is disposed in the accommodating space, and the other end extends to the outside of the outer casing. The writing head is sleeved on the sleeve for driving the sleeve to linearly move between a first position and a second position. The first circuit board is disposed on the sleeve, and the light emitting element is also disposed in the sleeve and electrically connected to the first circuit board.

The second circuit board is disposed in the accommodating space. The elastic member is also disposed in the accommodating space, and one end of the elastic member is disposed on the first circuit board, and the other end is abutted against the second circuit board. The hollow cylinder is an elastic member fixed to the second circuit board and sleeved and selectively contacting or away from the first circuit board. When the writing head is forced to move the sleeve from the first position to the second position, The hollow cylinder contacts the first circuit board and electrically connects the circuit formed by the first circuit board, the light emitting element, the hollow cylinder, and the second circuit board.

Under the above structure and operation, when the circuit is turned on, the light-emitting element can be illuminated to perform control or operation in the interactive image sensing system. When the user wants to stop the operation, the pen is moved away from the control panel or the pressure on the pen is stopped. After the force is stopped, the pen head causes the sleeve to drive the light-emitting element and the first circuit board to move from the second position to the first position by the restoring force provided by the elastic member. At the same time, the hollow cylinder is far away from the first circuit board, and the circuit formed by the first circuit board, the light-emitting element, the hollow cylinder and the second circuit board is broken.

In this way, when the user wants to stop the operation, there is no need to additionally press or control other switches, and it is only necessary to leave the optical stylus away from the interactive panel. To write, control, and operate, you only need to write or touch directly, without having to press or turn on the switch. Therefore, the user can be more fluent in use, and can avoid forgetting to turn off the power of the switch. In addition, reducing the setting of the switch, in addition to making the overall volume of the stylus smaller, can also reduce components and reduce manufacturing costs.

The detailed features and advantages of the present invention are described in detail below in the embodiments, which are sufficient to enable anyone skilled in the art to understand the present invention. The technical content is implemented in accordance with the present disclosure, and the objects and advantages associated with the present invention can be easily understood by those skilled in the art in light of the disclosure, the scope of the invention, and the drawings.

10,30‧‧‧ optical stylus

11,31‧‧‧ Shell

111,311‧‧‧ accommodating space

112‧‧‧through hole

113,313‧‧‧stops

12,32‧‧‧ sleeve

121‧‧‧First end

122‧‧‧second end

123‧‧‧stop ring

13‧‧‧Lighting elements

14‧‧‧First board

141‧‧‧ first surface

142‧‧‧ second surface

143‧‧‧First electrode

15‧‧‧Flexible components

151‧‧‧ fixed seat

1511‧‧‧Bump

152‧‧ ‧ spring

16‧‧‧ hollow cylinder

161‧‧‧1 piece

17‧‧‧Second circuit board

171‧‧‧ first surface

172‧‧‧ second surface

173‧‧‧second electrode

174‧‧‧ recess

18‧‧‧Fixed parts

181‧‧‧ first end

1811‧‧‧ hook

182‧‧‧ second end

1821‧‧‧Clamps

183‧‧ ‧Flap

19‧‧‧ pen head

322‧‧‧Chute

38‧‧‧ card firmware

381‧‧‧ hook

382‧‧‧ Pressure ring

D1, D2‧‧‧ spacing

Fig. 1 is a perspective view of an optical stylus according to a first embodiment of the present invention.

Fig. 2 is an exploded view of the optical stylus of the first embodiment of the present invention.

Figure 3 is a cross-sectional view showing an optical stylus according to a first embodiment of the present invention.

Figure 4 is a schematic view of the optical stylus sleeve of the first embodiment of the present invention in a second position.

Fig. 5 is a view showing the state of disconnection of the optical stylus circuit of the first embodiment of the present invention.

Fig. 6 is a view showing the conduction state of the optical stylus circuit of the first embodiment of the present invention.

Figure 7 is an exploded view of the optical stylus of the second embodiment of the present invention.

Figure 8 is a cross-sectional view showing an optical stylus of a second embodiment of the present invention.

Figure 9 is a schematic view showing the optical stylus sleeve of the second embodiment of the present invention in a second position.

1 to 6 show a first embodiment of the present invention. 1 is a perspective view of an optical stylus, FIG. 2 is an exploded view, FIG. 3 is a cross-sectional view, and FIG. 4 is a schematic view showing a state of movement of the sleeve during operation, FIG. And Figure 6 is a schematic diagram of the circuit state. Please refer to FIG. 1 to FIG. 3 . The optical stylus 10 of the embodiment includes: a casing 11 , a sleeve 12 , a pen head 19 , a first circuit board 14 , a light-emitting component 13 , and an elastic component 15. A second circuit board 17, a hollow cylinder 16, and a fixing member 18.

The housing 11 includes an accommodating space 111, at least one through hole 112, and a stopping portion 113. The sleeve 12 includes a first end portion 121 and a second end portion 122. The second end portion 122 is disposed in the accommodating space 111 of the outer casing 11 , and the first end portion 121 extends to the outside of the outer casing 11 . As shown in FIGS. 2 and 3, the second end portion 122 of the sleeve 12 has a larger diameter than the first end portion 121, and a stop is formed at the junction of the first end portion 121 and the second end portion 122. Ring 123. The stop ring 123 of the sleeve 12 can abut against the stop portion 113 of the outer casing 11. The light-emitting element 13 is disposed in the sleeve 12, and the front end of the light-emitting element 13 extends in the first end portion 121 of the sleeve 12.

The pen tip 19 is sleeved on the first end portion 121 of the sleeve 12 for linearly moving the sleeve 12 between a first position and a second position.

As shown in FIG. 2, the first circuit board 14 includes a first surface 141, a second surface 142, and a first electrode 143. The first circuit board 14 is disposed at the second end 122 of the sleeve 12. The light emitting element 13 is located on the first surface 141 side of the first circuit board 14 and is electrically connected to the first circuit board 14.

The elastic member 15 is disposed in the accommodating space 111 and includes a fixing base 151 and a spring 152. One end of the fixing base 151 is disposed on the second surface 142 of the first circuit board 14 and the other end is abutted against the spring 152. In the present embodiment, the fixing base 151 is abutted against the first circuit board 14 by the elastic force of the spring 152. In other aspects, the fixing base 151 can also be fixed on the second surface 142 of the first circuit board 14 by fastening or fixing. One end of the spring 152 is abutted against the fixing base 151, and the other end is abutted against the second circuit board 17.

In addition, in order to make the spring 152 abut against one end of the fixing seat 151, it can be exactly pressed against the desired position without leaving the fixing seat 151 by pressing. As shown in FIG. 2, a plurality of studs may be protruded from the fixing base 151. In this embodiment, the four studs 1511 are not limited thereto. The four protrusions 1511 are annularly centered on the axis of the fixing base 151. The outer circumference formed by the four protrusions 1511 is smaller than the inner diameter of the spring 152, so that the spring 152 can pass through the four protrusions 1511 and then abut against the fixing seat 151. The spring 152 is positioned using four studs 1511.

The second circuit board 17 is disposed in the accommodating space 111 and includes a first surface 171, a second surface 172, and a second electrode 173. The spring 152 is abutted against the first surface 171 of the second circuit board 17. The hollow cylinder 16 is fixed to the first surface 171 of the second circuit board 17, and is electrically connected to the second circuit board 17, and a part of the elastic member 15 is sleeved. In the embodiment, the second circuit board 17 is provided with two recesses 174, and the hollow cylinder 16 has a protrusion 161 corresponding to the two recesses 174. The tab 161 of the hollow cylinder 16 is correspondingly fixed to the recess 174 of the second circuit board 17 to fix the hollow cylinder 16 above the second circuit board 17. In other aspects, the first surface 171 of the second circuit board 17 may be fixed to the hollow cylinder 16 in a fixed manner.

The fixing member 18 has a first end 181 and a second end 182. The first end 181 of the fixing member 18 abuts against the second surface 172 of the second circuit board 17, and the second end 182 of the fixing member 18 is fixed. In the outer casing 11. As shown in FIG. 2, the fixing member 18 is a hollow member, and a four-piece piece 183 is protruded inside the fixing member 18, so that the first end 181 of the fixing member 18 abuts against the second surface of the second circuit board 17. 172. The number of the flaps 183 can be adjusted as needed, and the invention is not limited thereto.

However, the above structure only urges the second circuit board 17 against the fixing member 18 by the spring 152. In order to prevent the second circuit board 17 from being disengaged after the spring 152 is elastically fatigued, the two hook portions 1811 can be further extended outwardly at the first end 181 of the fixing member 18. The two hook portions 1811 are hooked to the first surface 171 of the second circuit board 17. Through the above structure, the second circuit board 17 can be fixed to the first end 181 of the fixing member 18 via the blocking piece 18 and the hook portion 1811.

At least one through hole is formed in the outer casing, and a second engaging end of the fixing member protrudes from the through hole. As shown in FIG. 2, in the present embodiment, the outer casing 11 is provided with a through hole 112, and the second end 182 of the fixing member 18 is respectively provided with a engaging member 1821 corresponding to the two through holes 112. When the fixing member 18 is disposed in the outer casing 11 , the engaging member 1821 is correspondingly fixed in the through hole 112 to fix the fixing member 18 in the outer casing 11 . Thereby, the fixing member 18 and the second circuit board 17 of the fixing fixture 18 are fixed to a desired position in the casing 11.

Next, referring to Fig. 4, when the user does not touch or press the optical stylus 10 to any surface, the sleeve 12 is in the first position. At this time, the stop ring 121 of the sleeve 12 is abutting against the stop portion of the outer casing 11. 113, and a distance D1 between the hollow cylinder 16 and the second surface 142 of the first circuit board 14 is maintained. The spacing between the pen tip 19 and the outer casing 11 is also maintained at a distance D2 which is equal to or greater than the spacing D1. At this time, the internal circuit of the optical stylus pen 10 is in an open state.

As shown in FIG. 5, the first electrode 143 of the first circuit board 14 is connected to the anode of a power source 20, and the light-emitting element 13 is electrically connected to the first circuit board 14. The second electrode 173 of the second circuit board 17 is connected to the negative pole of the power source 20, and the hollow cylinder 16 is electrically connected to the second circuit board 17. However, the hollow cylinder 16 is not in contact with the first circuit board 14, and thus the circuit is in an open state.

Referring to FIG. 4, when the user presses the optical stylus 10 to the panel in an analog writing action, the writing head 19 is forced to move the sleeve 12 from the first position to the second position. At this time, the hollow cylinder 16 contacts the second surface 142 of the first circuit board 14 to electrically connect the hollow cylinder 16 with the first circuit board 14. As shown in FIG. 6, the hollow cylinder 16 is electrically connected to the first circuit board 14, that is, the circuit formed by the first circuit board 14, the light-emitting element 13, the hollow cylinder 16, and the second circuit board 17 is turned on.

When the first electrode 143 of the first circuit board 14 and the second electrode 173 of the second circuit board 17 are respectively connected to the power source 20, the conduction of the circuit causes the light-emitting element 13 to emit light. The light-emitting element 13 can be a light-emitting diode or a laser light source, etc., and the invention is not limited thereto. The light emitted by the illuminating element 13 directly illuminates or penetrates the pen tip 19 and is recognized or sensed by the interactive image sensing system. The pen tip 19 may include a light guiding material or a light guiding film for uniformly distributing the light emitted by the light emitting element 13 to the pen tip 19 to enhance the overall light. Sex.

When the user wants to stop writing or controlling, the optical stylus 10 will leave the panel and the pen tip 19 will stop being stressed. At this time, the restoring force due to the release of the elastic member 15 will push the first circuit board 14 away from the hollow cylinder 16. In conjunction with the sleeve 12, the sleeve 12 is returned from the second position shown in FIG. 4 to the first position as shown in FIG. Since the hollow cylinder 16 and the first circuit board 14 are restored to the uncontacted state, the circuit formed by the first circuit board 14, the light-emitting element 13, the hollow cylinder 16, and the second circuit board 17 is made to be in an open state, as shown in FIG. Show.

With the above control structure, when the user wants to write, operate or control, only the pressure of the pen head needs to be pressed, so that the internal circuit of the optical stylus is turned on, so that the light-emitting element can be illuminated, and the control is performed in the interactive image sensing system. Or operation. When the user wants to stop the operation, the pen is moved away from the control panel or the pen tip is stopped, so that the internal circuit of the optical stylus is disconnected, and the illumination element can be stopped to emit light. Since no additional pressing or other switches are required, the user can be more fluent in use and can avoid forgetting to turn off the power of the switch. In addition, reducing the setting of the switch, in addition to making the overall volume of the stylus smaller, can also reduce components and reduce manufacturing costs.

7 to 9 are views showing a second embodiment of the present invention. Figure 7 is an exploded view of the optical stylus, Figure 8 is a cross-sectional view, and Figure 9 is a schematic view of the sleeve moving to the second position. The same components and principles as those of the first embodiment in this embodiment are not described again, except that the structure of the internal components is fixed. Please also refer to Figures 7 and 8 for the optics of this embodiment. The stylus pen 30 includes a casing 31, a sleeve 32, a pen head 19, a first circuit board 14, a light-emitting element 13, an elastic member 15, a second circuit board 17, a hollow cylinder 16, and a card. Firmware 38.

The fastener 38 is disposed in the accommodating space 311 and sleeves the first circuit board 14 , the second circuit board 17 , the elastic member 15 , and the hollow cylinder 16 . The fastener 38 includes two hooks 381 and a pressure ring 382. A sleeve 322 is recessed in the sleeve 32 corresponding to the two hooks 381. When the fasteners 38 are disposed on the first circuit board 14, the second circuit board 17, the elastic member 15, and the hollow cylinder 16 to the sleeve 32, the hooks 381 are respectively slidably disposed in the corresponding sliding grooves 322.

As shown in FIG. 8, when the sleeve 32 is in the first position, that is, when the first circuit board 14 and the hollow cylinder 16 are spaced apart by a distance D1, the first surface 141 of the first circuit board 14 is abutted against the two hooks. 381. As shown in Fig. 9, when the pen tip 19 is pressed to move the sleeve 32 from the first position to the second position, the first circuit board 14 is brought into contact with the hollow cylinder 16 to turn on the circuit. At this time, the first surface 141 of the first circuit board 14 is away from the two hooks 381.

In addition, in order to fix the second circuit board 17 at the desired position, the pressure ring 382 of the fastener 38 is disposed inside the fastener 38 and abuts against the second circuit board 17. In order to enable the second circuit board 17 to be fixed at a desired position, the second circuit board 17 can be combined with the pressure ring 382 of the fastener 38 by means of bonding, locking or clamping.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. Special The scope of protection is subject to the definition of the scope of the patent application attached to this specification.

11‧‧‧Shell

111‧‧‧ accommodating space

112‧‧‧through hole

12‧‧‧ sleeve

121‧‧‧First end

122‧‧‧second end

13‧‧‧Lighting elements

14‧‧‧First board

143‧‧‧First electrode

15‧‧‧Flexible components

151‧‧‧ fixed seat

1511‧‧‧Bump

152‧‧ ‧ spring

16‧‧‧ hollow cylinder

161‧‧‧1 piece

17‧‧‧Second circuit board

172‧‧‧ second surface

173‧‧‧second electrode

174‧‧‧ recess

18‧‧‧Fixed parts

181‧‧‧ first end

1811‧‧‧ hook

182‧‧‧ second end

1821‧‧‧Clamps

183‧‧ ‧Flap

19‧‧‧ pen head

Claims (10)

An optical stylus includes: a casing having an accommodating space; a sleeve having one end disposed in the accommodating space and the other end extending to the outside of the casing; and a head disposed on the sleeve for Driving the sleeve to move linearly between a first position and a second position; a first circuit board disposed on the sleeve; a light-emitting element disposed in the sleeve and electrically connected to the first a second circuit board disposed in the accommodating space; an elastic member disposed in the accommodating space, the elastic member is disposed at one end of the first circuit board, and the other end is abutted against the second circuit And a hollow cylinder fixed to the second circuit board and sleeved part of the elastic member, and selectively contacting or away from the first circuit board, when the writing head is forced to make the sleeve When the first position is moved to the second position, the hollow cylinder contacts the first circuit board, and the circuit formed by the first circuit board, the light emitting element, the hollow cylinder and the second circuit board is turned on. The optical stylus of claim 1, wherein the outer casing includes a stop portion, the sleeve including a stop ring that selectively abuts or moves away from the stop portion. The optical stylus of claim 1, wherein the elastic member comprises a fixing base and a spring, and one end of the fixing base is disposed on the first circuit board. The other end is abutted against the spring, and one end of the spring abuts against the fixing base, and the other end abuts against the second circuit board. The optical stylus of claim 1, further comprising a fixing member having a first end and a second end, the first end of the fixing member abutting against the second circuit board, the fixing member The second end is fixed to the outer casing. The optical stylus of claim 4, wherein the outer casing is provided with at least one through hole, and the second end of the fixing member has a engaging member corresponding to the through hole and correspondingly fastened to the through hole. . The optical stylus of claim 4, wherein the fixing member is a hollow member, and a plurality of blocking pieces are protruded inside the fixing member, and the blocking pieces correspond to the second circuit board. The optical stylus of claim 6, wherein the first end of the fixing member extends to protrude from the plurality of hook portions, and the hook portions are hooked to the second circuit board. The optical stylus according to claim 1, further comprising a card fastener disposed in the accommodating space, and sheathing the first circuit board, the second circuit board, the elastic member and the hollow cylinder. The optical stylus of claim 8, wherein the card fastener comprises a plurality of hooks, and the sleeves are respectively provided with a sliding slot corresponding to the hooks, and the hooks are slidably disposed in the sliding slots. The first circuit board selectively abuts or moves away from the hooks. The optical stylus of claim 8, wherein the fastener comprises a pressure ring disposed inside the fastener and abutting against the second circuit board.