CN107329597B - Reinforced pointing rod - Google Patents
Reinforced pointing rod Download PDFInfo
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- CN107329597B CN107329597B CN201710730397.3A CN201710730397A CN107329597B CN 107329597 B CN107329597 B CN 107329597B CN 201710730397 A CN201710730397 A CN 201710730397A CN 107329597 B CN107329597 B CN 107329597B
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- silica gel
- pointing
- interface
- mcu chip
- pointing stick
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
Abstract
The invention discloses a reinforced pointing rod, which comprises a pointing rod silica gel key panel and a pointing rod control panel, wherein the pointing rod silica gel key panel comprises a silica gel rocker cap and a silica gel key, the pointing rod silica gel key panel is assembled on the pointing rod control panel, the pointing rod control panel comprises a film type pressure sensor, a key electrode and an MCU chip, and the silica gel rocker cap is used as a pressure signal transmission medium to transmit pressure signals generated by external fingers to the film type pressure sensor. The reinforced pointing stick uses a film type pressure sensor as a signal transmission medium of the pointing stick, converts a pressing signal of a finger into a voltage signal, and a micro-processing chip converts the voltage signal into a computer recognizable code after collecting the voltage signal through A/D conversion, so as to control the movement of a mouse cursor; the design of the whole pointing stick scheme is independently researched and developed, and the purpose of independent control can be achieved.
Description
Technical Field
The invention relates to the technical field of pointing sticks, in particular to a reinforced pointing stick.
Background
The pointing stick is a device for controlling the movement of a computer mouse cursor and realizing the related functions of the mouse, and the technology is always in a technical monopoly and blocking state in foreign countries.
The track ball and the pointing stick which are currently appeared in the market all have a common characteristic: the cursor movement of the computer mouse is controlled by moving the track ball or pressing the device by the finger, and the functions of the left, the middle and the right keys are realized. For the track ball, the track ball is controlled to move by moving the finger, the vibration resistance and the waterproof performance of the track ball are poor, and the track ball is easy to move in a severe vibration environment to influence operation and use.
A sensor is adopted as a signal transmission medium for a pointing stick in the current market; such as hall sensors, strain gauge pressure sensors; the pointing stick using the two sensors has the problems of insensitive movement of the mouse cursor, poor uniformity of movement speed, short service life and the like.
The military track ball has poor vibration resistance and waterproof performance, the pointing stick on the market is insensitive to movement, has short service life and only supports USB or PS2.
One of the problems of interface output and the like is that the track ball and the pointing stick on the market at present are optimized and improved from various aspects, but the problems cannot be fundamentally solved. Therefore, the independent controllable technology of the pointing stick is realized, and the problems of poor vibration resistance, insensitive movement, short service life, single interface and the like of products in the market are fundamentally solved.
Disclosure of Invention
The invention aims to break the monopoly of the pointing stick technology, overcome the defects of the existing pointing stick, optimally design the pointing stick in the aspects of pressure sensor, structure, electromagnetic compatibility and the like, achieve the purposes of prolonging the service life and user experience of the pointing stick, and realize the output of two interfaces so as to meet the corresponding industrial application requirements.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the reinforced pointing rod comprises a pointing rod silica gel key panel and a pointing rod control panel, wherein the pointing rod silica gel key panel comprises a silica gel rocker cap and a silica gel key, the pointing rod silica gel key panel is assembled on the pointing rod control panel, and the pointing rod control panel comprises a film type pressure sensor, a key electrode and an MCU chip; the silica gel rocker cap is connected with the film type pressure sensor, the film type pressure sensor is connected with the MCU chip, the silica gel rocker cap is used as a pressure signal transmission medium, a pressure signal generated by an external finger on the silica gel rocker cap is transmitted to the film type pressure sensor, and the film type pressure sensor converts the pressure signal into a voltage signal and outputs the voltage signal to the MCU chip;
the silica gel key is connected with the key electrode, the key electrode is connected with the MCU chip, the silica gel key is used as a key signal transmission medium, and the key electrode outputs a level signal to the MCU chip through the contact of a key metal sheet at the bottom of the silica gel key and the key electrode; the MCU chip receives voltage signals and level signals from the film type pressure sensor and the key electrode;
the MCU chip converts the voltage signals and the level signals into codes which can be identified by a computer through internal AD conversion and calculation, so as to realize the movement of a mouse cursor and the functions of left, middle and right keys;
the MCU chip is connected with an external computer host, and the computer host supplies power for the MCU chip and other peripheral circuits by a DC5V power supply.
Further, the MCU chip converts the voltage signals and the level signals into codes which can be identified by a computer through internal AD conversion and calculation, so as to realize the functions of mouse cursor movement and left, middle and right keys; meanwhile, the PS2 interface and the USB interface are compatible to communicate with a computer, the PS2 interface is used for communication in a default condition, when the PS2 interface is not connected, the PS2 interface is caused to fail to initialize, and at the moment, the communication is automatically switched to the USB interface for communication with the computer.
The system further comprises a PS2 interface and a USB interface, wherein the PS2 interface and the USB interface are connected with the MCU chip, the MCU chip is connected with the host computer through the PS2 interface or the USB interface, firstly, the pointing rod sends out a handshake instruction, waits for response, a corresponding recognition algorithm in the pointing rod detects the handshake instruction and returns a code value, if the detected return code value is matched with the PS2 interface check value, the PS2 interface is switched to a PS2 interface driving program, if the detected return code value is matched with the USB interface check value, the USB interface is switched to a USB interface driving program, if both interfaces are not connected, the handshake instruction is sent intermittently, the waiting time is exceeded, the connection timeout is indicated, the initialization is failed, then the handshake instruction is sent again, and the system loops until the corresponding interface cable is powered off or connected.
Further: the MCU chip adopts a design without external crystal oscillator.
Further: the host computer comprises a PCB and a shell, and a shielding layer is arranged between the PCB and the shell.
As an alternative implementation mode, a lower annular limiting table is arranged on the pointing rod control board, an upper annular limiting table which is in nested fit with the pointing rod silica gel key panel is arranged below the pointing rod silica gel key panel, the lower end of the upper annular limiting table is inserted into the lower annular limiting table, the upper annular limiting table and the lower annular limiting table are in clearance fit, a cavity which extends longitudinally is formed in the upper annular limiting table, and a capsule elastic telescopic column is arranged in the cavity.
Further: the capsule elastic telescopic column comprises an upper shell and a lower shell which are made of flexible materials, an inner cavity is formed by covering the upper shell and the lower shell, and a spring is arranged in the inner cavity.
Further: the upper shell and/or the lower shell is/are a flexible shell made of plant cellulose and industrial gelatin, and folding parts are arranged on the upper shell and/or the lower shell.
Further: the inner edge of the upper end of the lower annular limiting table is provided with a chamfer, the chamfer is provided with a regular pattern, and the position of the upper annular limiting table corresponding to the regular pattern is provided with a matching pattern.
Further: the regular patterns are annular shallow protrusions arranged on the chamfer angles, and the matched patterns are annular shallow protrusions arranged on the outer edge of the upper annular limiting table.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a reinforced pointing stick, which adopts a film type pressure sensor as a signal transmission medium of the pointing stick, converts a pressing signal of a finger into a voltage signal, and a micro-processing chip converts the voltage signal into a code recognizable by a computer after collecting the voltage signal through A/D conversion, thereby controlling the movement of a mouse cursor; the design of the whole pointing stick scheme is independently researched and developed, and the purpose of independent control can be achieved.
2. The reinforced pointing rod provided by the invention has the advantages of high precision, long pressing life and the like, and the problems of insensitive movement, poor vibration resistance and the like of the pointing rod can be fundamentally solved by using the reinforced pointing rod as a signal transmission medium of the pointing rod.
3. The reinforced pointing stick structurally adopts industrial silicon rubber as a key panel of the pointing stick, and the pressing times of the reinforced pointing stick can reach tens of millions; meanwhile, the waterproof grade and the service life of the pointing stick can be improved.
4. The strengthening pointing stick provided by the invention realizes output of two interfaces, namely USB and PS2 through optimization processing of a software algorithm; in the aspect of electromagnetic compatibility design, the pointing stick MCU chip adopts an external crystal oscillator-free design, so that the radiation sensitivity of the pointing stick can be greatly reduced, a shielding layer is added in the PCB design, and the pointing stick chip is well contacted with a shell, so that the antistatic and anti-interference capabilities of the pointing stick can be greatly enhanced.
Drawings
FIG. 1 is a schematic diagram of the structural principle of a reinforced pointing stick of the present invention;
fig. 2 is a signal transmission flow chart of a PS2 interface and a USB interface of the consolidated pointing stick according to the present invention.
In the figure: 1 a pointing stick silica gel key panel, a 101 silica gel rocker cap, 102 a silica gel key, 2 a pointing stick control panel, 201 a film type pressure sensor, 202 key electrodes and 203 an MCU chip.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a structure of a reinforced pointing stick according to the present invention.
The invention provides a technical scheme that: the utility model provides a consolidate point pole, includes point pole silica gel button panel 1 and point pole control panel 2, and point pole silica gel button panel 1 includes silica gel rocker cap 101 and silica gel button 102, and point pole silica gel button panel 1 is assembled on point pole control panel 2, and point pole control panel 2 includes film pressure sensor 201, button electrode 202 and MCU chip 203.
The reinforced pointing stick uses a film type pressure sensor 201 as a signal transmission medium of the pointing stick, converts a pressing signal of a finger into a voltage signal, and an MCU chip (micro processing chip) 203 converts the voltage signal into a computer recognizable code after collecting the voltage signal through A/D conversion, thereby controlling the movement of a mouse cursor; the design of the whole pointing stick scheme is independently researched and developed, and the purpose of independent control can be achieved.
The reinforced pointing stick, wherein the film type pressure sensor 201 has the advantages of high precision, long pressing life and the like, and the problems of insensitive movement, poor vibration resistance and the like of the pointing stick can be fundamentally solved by using the reinforced pointing stick as a signal transmission medium of the pointing stick.
Silica gel (Silica gel; silica alias): the silicic acid gel is a high-activity adsorption material, belongs to an amorphous substance, and has a chemical molecular formula of mSiO2.nH2O; the product is free from reaction with any substances except strong alkali and hydrofluoric acid, is insoluble in water and any solvent, and has no toxicity, no smell and stable chemical property. Various types of silica gel have different microporous structures formed by different manufacturing methods. The chemical composition and physical structure of the silica gel determine that the silica gel has the characteristics that many other similar materials are difficult to replace: high adsorption performance, good thermal stability, stable chemical property, high mechanical strength, etc. Silica gel is classified into according to the size of its pore diameter: macroporous silica gel, B-type silica gel, fine pore silica gel, etc.
The reinforced pointing stick structurally adopts industrial silicon rubber as a key panel of the pointing stick, and the pressing times can reach tens of millions; meanwhile, the waterproof grade and the service life of the pointing stick can be improved.
The silica gel rocker cap 101 is used as a pressure signal transmission medium, a pressure signal generated by an external finger is transmitted to the film type pressure sensor 201, and the film type pressure sensor 201 converts the pressure signal into a voltage signal and outputs the voltage signal to the MCU chip 203; the silica gel key 102 is used as a key signal transmission medium, and the key electrode outputs a level signal to the MCU chip 203 by contacting the key metal sheet at the bottom of the silica gel key 102 with the key electrode 202; the MCU chip 203 receives voltage signals and level signals from the film type pressure sensor 201 and the key electrode 202; the MCU chip 203 converts the voltage signal and the level signal into codes which can be identified by a computer through internal AD conversion and calculation, and realizes the functions of mouse cursor movement and left, middle and right keys; and through special algorithm processing of software, USB and PS2 interface signals can be output to a computer host, and the computer host provides DC5V power supply for the MCU chip 203 and other peripheral circuits.
The pointing stick is reinforced, meanwhile, the pointing stick is compatible with PS2 and USB interfaces to communicate with a computer, PS2 is used as a default, when the PS2 interfaces are not connected, the PS2 interfaces are caused to fail to initialize, and at the moment, the pointing stick is automatically switched to use the USB interfaces to communicate with the computer.
MCU chip (micro control unit), also called monolithic microcomputer (Single ChipMicrocomputer) or singlechip, is to reduce the frequency and specification of CPU (Central Process Unit), and integrate the peripheral interfaces such as memory (Timer), USB, A/D conversion, UART, PLC, DMA, etc., even LCD driving circuit on a single chip to form chip level computer for different application occasions. Such as mobile phones, PC periphery, remote controllers, stepping motors in automobiles and industries, control of robot arms, etc., can see the body and the shadow of the MCU chip.
In the invention, the following components are added: the MCU chip 203 adopts a design without external crystal oscillator, which can greatly reduce the radiation sensitivity of the pointing stick.
In the invention, the following components are added: the computer host comprises a PCB and a shell, and a shielding layer is arranged between the PCB and the shell, so that the antistatic and anti-interference capabilities of the pointing stick can be greatly enhanced.
Referring to fig. 2, fig. 2 is a signal transmission flow chart of a PS2 interface and a USB interface of the pointing stick reinforcement according to the present invention.
The invention provides a reinforcement pointing stick which also comprises a PS2 interface and a USB interface, wherein the PS2 interface and the USB interface are arranged on an MCU chip, the MCU chip is simultaneously connected with a computer host through the PS2 interface and the USB interface, the PS2 interface and the USB interface are mutually compatible, firstly, the pointing stick sends out a handshake instruction, waits for response, a corresponding recognition algorithm in the pointing stick detects the handshake instruction and returns a code value, if the detected return code value is matched with a PS2 interface check value, the PS2 interface is connected, the switching is performed to a PS2 interface driving program, otherwise, the switching is performed to a USB interface driving program, if the two interfaces are not connected, the return code value cannot be received, the handshake instruction is intermittently sent, the waiting time is exceeded, the connection timeout is indicated, the initialization failure is then sent, and the circulation is performed until the connection is interrupted or a corresponding interface cable is connected.
As a preferred embodiment, the pointing rod control board 2 is provided with a lower annular limiting table, an upper annular limiting table nested and matched with the pointing rod silica gel key panel 1 is arranged below the pointing rod silica gel key panel, the lower end of the upper annular limiting table is inserted into the lower annular limiting table, the upper annular limiting table and the lower annular limiting table are in clearance fit, a cavity extending longitudinally is formed inside the upper annular limiting table, and a capsule elastic telescopic column is arranged in the cavity. Through two spacing platforms of nested setting, guarantee that pointing stick control panel 2 is flexible along predetermineeing the track elasticity, have spacing, limit angle and resilience's effect, adopt capsule elasticity flexible post, be favorable to carrying out processing, assembly with process decomposition, reduce the assembly degree of difficulty.
The capsule elastic telescopic column comprises an upper shell and a lower shell which are made of flexible materials, the upper shell and the lower shell are covered to form an inner cavity, a spring is arranged in the inner cavity, the preferable upper shell and the preferable lower shell are provided with connecting points in an initial state, the connecting points can be glue points or disposable buckle structures arranged on the upper shell and the lower shell, under the connection of the connecting points, the spring is in a semi-compression state, after the first use of the reinforced pointing rod, a user needs to press the pointing rod slightly, the connecting points are damaged, at the moment, the spring in the capsule elastic telescopic column is in an elastic state, the arrangement is favorable for ensuring that the reinforced pointing rod is used for the first time by the user, the service life of a user product is ensured, and the rights and interests of the user are maintained and are equivalent to a product seal. Preferably, the upper shell and/or the lower shell is/are a flexible shell made of plant cellulose and industrial gelatin, and the upper shell and/or the lower shell is/are provided with a folding part, and the upper shell and the lower shell are provided with a certain elasticity and the folding part is provided, so that the upper shell and the lower shell are provided with a larger expansion space, and the service life is prolonged.
Preferably, the inner edge of the upper end of the lower annular limiting table is provided with a chamfer, the inner side of the upper end of the lower annular limiting table is in an inverted cone-shaped slope due to the chamfer, a regular pattern is arranged on the slope of the chamfer, the upper annular limiting table is provided with a matching pattern corresponding to the regular pattern, the regular pattern is an annular shallow protrusion arranged on the chamfer, and the matching pattern is an annular shallow protrusion arranged on the outer edge of the upper annular limiting table. When the force direction of the user is not opposite, the regular patterns and the matched patterns are rubbed, and the hand feeling can be transmitted to the fingertips of the user, so that the user is prompted to change the force direction, normal keys are not affected, the service life of the pointing stick is prolonged, and the pointing stick is more scientific and humanized.
To sum up: the invention has the following four beneficial effects:
1. the invention provides a reinforced pointing stick, which adopts a film type pressure sensor as a signal transmission medium of the pointing stick, converts a pressing signal of a finger into a voltage signal, and a micro-processing chip converts the voltage signal into a code recognizable by a computer after collecting the voltage signal through A/D conversion, thereby controlling the movement of a mouse cursor; the design of the whole pointing stick scheme is independently researched and developed, and the purpose of independent control can be achieved.
2. The reinforced pointing rod provided by the invention has the advantages of high precision, long pressing life and the like, and the problems of insensitive movement, poor vibration resistance and the like of the pointing rod can be fundamentally solved by using the reinforced pointing rod as a signal transmission medium of the pointing rod.
3. The reinforced pointing stick structurally adopts industrial silicon rubber as a key panel of the pointing stick, and the pressing times of the reinforced pointing stick can reach tens of millions; meanwhile, the waterproof grade and the service life of the pointing stick can be improved.
4. The strengthening pointing stick provided by the invention realizes output of two interfaces, namely USB and PS2 through optimization processing of a software algorithm; in the aspect of electromagnetic compatibility design, the pointing stick MCU chip adopts an external crystal oscillator-free design, so that the radiation sensitivity of the pointing stick can be greatly reduced, a shielding layer is added in the PCB design, and the pointing stick chip is well contacted with a shell, so that the antistatic and anti-interference capabilities of the pointing stick can be greatly enhanced.
The related modules involved in the system are all hardware system modules or functional modules in the prior art combining computer software programs or protocols with hardware, and the computer software programs or protocols involved in the functional modules are all known technologies for those skilled in the art and are not improvements of the system; the system is improved in interaction relation or connection relation among the modules, namely, the overall structure of the system is improved, so that the corresponding technical problems to be solved by the system are solved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a consolidate point pole, includes point pole silica gel button panel (1) and point pole control panel (2), its characterized in that: the pointing rod silica gel key panel (1) comprises a silica gel rocker cap (101) and silica gel keys (102), the pointing rod silica gel key panel (1) is assembled on a pointing rod control panel (2), and the pointing rod control panel (2) comprises a film type pressure sensor (201), a key electrode (202) and an MCU chip (203); the silica gel rocker cap (101) is connected with the film type pressure sensor (201), the film type pressure sensor (201) is connected with the MCU chip (203), the silica gel rocker cap (101) is used as a pressure signal transmission medium to transmit a pressure signal generated by an external finger on the silica gel rocker cap (101) to the film type pressure sensor (201), and the film type pressure sensor (201) converts the pressure signal into a voltage signal and outputs the voltage signal to the MCU chip (203);
the silica gel key (102) is connected with the key electrode (202), the key electrode (202) is connected with the MCU chip (203), the silica gel key (102) is used as a key signal transmission medium, and the key electrode (202) outputs a level signal to the MCU chip (203) through the contact of a key metal sheet at the bottom of the silica gel key (102); the MCU chip (203) receives voltage signals and level signals from the film type pressure sensor (201) and the key electrode (202);
the MCU chip (203) converts the voltage signals and the level signals into codes which can be identified by a computer through internal AD conversion and calculation, so as to realize the functions of mouse cursor movement and left, middle and right keys;
the MCU chip (203) is connected with an external computer host, and the computer host supplies power for the MCU chip (203) and other peripheral circuits;
the system comprises a computer host, a PS2 interface and a USB interface, wherein the PS2 interface and the USB interface are connected with the MCU chip (203), the MCU chip (203) is connected with the computer host through the PS2 interface or the USB interface, firstly, a pointing rod sends out a handshake instruction, waits for response, a corresponding recognition algorithm in the pointing rod detects the handshake instruction and returns a code value, if the detected return code value is matched with a PS2 interface check value, the PS2 interface is indicated to be connected, the PS2 interface driver is switched, if the detected return code value is matched with the USB interface check value, the USB interface is indicated to be connected, the USB interface driver is switched, if the two interfaces are not connected, the handshake instruction is sent intermittently, the waiting time is exceeded, the connection timeout is indicated, the initialization is failed, then the handshake instruction is sent again, and the cycle is repeated until the corresponding interface cable is powered off or connected.
2. A reinforced pointing stick according to claim 1, characterized in that: the MCU chip (203) converts the voltage signals and the level signals into codes which can be identified by a computer through internal AD conversion and calculation, so as to realize the functions of mouse cursor movement and left, middle and right keys; meanwhile, the PS2 interface and the USB interface are compatible to communicate with a computer, the PS2 interface is used for communication in a default condition, when the PS2 interface is not connected, the PS2 interface is caused to fail to initialize, and at the moment, the communication is automatically switched to the USB interface for communication with the computer.
3. A reinforced pointing stick according to claim 1, characterized in that: the MCU chip (203) adopts a design without external crystal oscillator.
4. A reinforced pointing stick according to claim 1, characterized in that: the host computer comprises a PCB and a shell, and a shielding layer is arranged between the PCB and the shell.
5. A reinforced pointing stick according to claim 1, characterized in that: the utility model discloses a capsule, including pointing stick control board (2), pointing stick silica gel button panel (1), upper annular spacing platform, lower annular spacing platform, upper annular spacing platform lower extreme, lower annular spacing platform, two clearance fit, inside a longitudinally extending's cavity of formation, be provided with capsule elasticity telescopic column in the cavity.
6. A reinforced pointing stick as recited in claim 5, wherein: the capsule elastic telescopic column comprises an upper shell and a lower shell which are made of flexible materials, an inner cavity is formed by covering the upper shell and the lower shell, and a spring is arranged in the inner cavity.
7. A reinforced pointing stick as recited in claim 6, wherein: the upper shell and/or the lower shell is/are a flexible shell made of plant cellulose and industrial gelatin, and folding parts are arranged on the upper shell and/or the lower shell.
8. A reinforced pointing stick as recited in claim 5, wherein: the inner edge of the upper end of the lower annular limiting table is provided with a chamfer, the chamfer is provided with a regular pattern, and the position of the upper annular limiting table corresponding to the regular pattern is provided with a matching pattern.
9. A reinforced pointing stick according to claim 8, characterized in that: the regular patterns are annular shallow protrusions arranged on the chamfer angles, and the matched patterns are annular shallow protrusions arranged on the outer edge of the upper annular limiting table.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710730397.3A CN107329597B (en) | 2017-08-23 | 2017-08-23 | Reinforced pointing rod |
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|---|---|---|---|
| CN201710730397.3A CN107329597B (en) | 2017-08-23 | 2017-08-23 | Reinforced pointing rod |
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| CN107329597B true CN107329597B (en) | 2023-09-29 |
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| CN204302921U (en) * | 2014-12-06 | 2015-04-29 | 杨丽 | A kind of TrackPoint of capacitance touching control type |
| JP2016224895A (en) * | 2015-06-03 | 2016-12-28 | 群光電子股▲ふん▼有限公司 | Cursor controller and method |
| CN205451020U (en) * | 2015-12-28 | 2016-08-10 | 中国科学院重庆绿色智能技术研究院 | Graphite alkene capacitive touch screen with forced induction |
| CN206117790U (en) * | 2016-09-27 | 2017-04-19 | 深圳市人彩科技有限公司 | Smart mobile phone with back mouse subassembly |
| CN207133790U (en) * | 2017-08-23 | 2018-03-23 | 湖南中力皓电子科技有限公司 | One kind reinforces TrackPoint |
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