CN116149496A

CN116149496A - Touch pad and notebook computer

Info

Publication number: CN116149496A
Application number: CN202211617870.4A
Authority: CN
Inventors: 马保军; 张治宇; 高颖诗; 胡志佳; 陈立; 何思垚; 王超产
Original assignee: Emdoor Digital Technology Co ltd
Current assignee: Emdoor Digital Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-23

Abstract

The invention discloses a touch pad and a notebook computer, wherein the touch pad comprises: a connecting shaft; the two fixing pieces are respectively and fixedly connected to two ends of the connecting shaft, a plurality of limit grooves which are distributed at intervals in the circumferential direction are formed in the fixing pieces, and the limit grooves of the two fixing pieces are open in opposite directions; the two support plates are provided with sleeving parts, the sleeving parts are sleeved outside the connecting shaft, the sleeving parts of the two support plates are distributed in the axial direction of the connecting shaft and are provided with limiting convex parts in a way of axially opposite protruding, and the support plates can axially move relative to the connecting shaft so as to have a first position and a second position; in the first position, the limit convex part is clamped into a limit groove to limit the circumferential rotation of the support plate relative to the connecting shaft; in the second position, the limit convex part is separated from the limit groove, and the support plate can circumferentially rotate relative to the connecting shaft. The technical scheme of the invention aims to provide a touch pad which can be separated from the equipment main body of a notebook computer and is independently used as a mouse.

Description

Touch pad and notebook computer

Technical Field

The invention relates to the technical field of notebook computers, in particular to a touch pad and a notebook computer.

Background

Notebook computers are generally equipped with a touch pad, and because the touch pad is inconvenient to operate, a user only performs some simple operations on the touch pad, and involves operations with frequent actions, and an external mouse is often required. However, when the user goes out to carry the notebook computer, the user needs to additionally carry the external mouse, which is very inconvenient, and the user often forgets to carry the external mouse, and the user can only operate the external mouse through the touch pad, so that great inconvenience is brought to the operation of the user.

Disclosure of Invention

The main objective of the present invention is to provide a touch pad, which is capable of being separated from the main body of a notebook computer and used as a mouse independently.

In order to achieve the above object, the touch pad provided by the present invention includes:

a connecting shaft;

the two fixing pieces are respectively and fixedly connected to two ends of the connecting shaft, a plurality of limit grooves which are distributed at intervals in the circumferential direction are formed in the fixing pieces, and the limit grooves of the two fixing pieces are open in opposite directions; and

the two support plates are provided with sleeving parts, the sleeving parts are sleeved outside the connecting shaft, the sleeving parts of the two support plates are distributed in the axial direction of the connecting shaft and are provided with limiting convex parts in a way of axially reversing, and the support plates can axially move relative to the connecting shaft so as to have a first position and a second position; in the first position, the limit protrusion is clamped into the limit groove to limit the support plate to rotate circumferentially relative to the connecting shaft; in the second position, the limit protruding part is separated from the limit groove, and the support plate can rotate circumferentially relative to the connecting shaft.

Optionally, a touch panel is disposed on the same side of the two support plates, and at least one pressure sensor is disposed on one touch panel, and in the first state, the pressure sensor is electrically connected to the main control board of the device main body, and in the second state, the pressure sensor is communicatively connected to the main control board.

Optionally, each supporting plate is internally provided with a mounting cavity, a battery is accommodated and mounted in the mounting cavity, the pressure sensor is fixedly connected with the touch panel and electrically connected with the battery in the corresponding mounting cavity, and in the first state, the battery is electrically connected with the main control board.

Optionally, the supporting plate is provided with an exposed conductive part, so as to be in contact with and conducted with a conductive interface exposed out of the device main body in the first state, the conductive interface is electrically connected with the main control board, and the battery is electrically connected with the conductive part.

Optionally, the touch pad further includes an indicator light exposed from the touch panel, where the indicator light is electrically connected to the battery and is used for indicating the electric quantity of the battery.

Optionally, in the first state, adjacent sides of the touch panels of the two support plates are spliced.

Optionally, the touch pad further includes a roller, in the first state, an inductor of the roller is electrically connected to a main control board of the device main body, and in the second state, the inductor of the roller is communicatively connected to the main control board;

the roller is positioned between the two sleeving parts, rotatably sleeved on the connecting shaft, and axially fixed relative to the connecting shaft, and in the second state, the roller is arranged outside the touch panel.

Optionally, the connecting axle is in the axial both sides of gyro wheel respectively are provided with a collar arch, the touch-control board still includes two reset spring, two reset spring is in two the protruding opposite side cover of collar is located the connecting axle, and each reset spring's both ends are connected respectively in corresponding collar is protruding with cup joint portion under reset spring's effect, the backup pad has the trend of maintaining in the first position.

Optionally, the opposite ends of the two fixing pieces are provided with guiding ring grooves, the limiting grooves are concavely arranged in the guiding ring grooves, and the limiting convex parts are slidably inserted in the guiding ring grooves at the second position.

The invention also provides a notebook computer, which comprises:

an apparatus main body; and

and the touch control plate is arranged on the equipment main body in the first state, and is separated from the equipment main body in the second state, so that the mouse can be independently used as a mouse.

The touch control plate comprises a connecting shaft, two fixing pieces and two supporting plates, wherein the two fixing pieces are respectively and fixedly connected to two ends of the connecting shaft, and the two supporting plates are sleeved on the connecting shaft and can rotate around the connecting shaft. Be equipped with a plurality of spacing recesses on the mounting, be equipped with spacing convex part in the backup pad, spacing convex part in the backup pad can block in the spacing recess on the mounting, the position of the spacing convex part of backup pad has been restricted through the block, thereby the backup pad has been restricted in the epaxial position of connecting, again because there are a plurality of spacing recesses on the mounting, so the backup pad can block the different positions at the connecting as required, and then the relative position relation of two backup pads also becomes various, thereby user's selectivity has been increased, make the user can select suitable touch panel structure shape according to self needs, the convenience of use of touch panel has been increased, user's use experience has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a touch pad in a first state according to the present invention;

FIG. 2 is a schematic diagram of a touch pad in a second state according to the present invention;

FIG. 3 is a schematic diagram of a portion of a touch pad of the present invention connected to a connection shaft;

FIG. 4 is a schematic structural view of a fixing member in a touch pad according to the present invention;

fig. 5 is a schematic structural diagram of a main body of the device in the notebook computer according to the present invention.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Touch panel	200	Fixing piece
210	Guide ring groove	220	Limiting groove
				300	Supporting plate	310	Socket joint
320	Limiting convex part	400	Avoidance groove
				500	Connecting shaft	600	Roller wheel
700	Reset spring	800	Device body

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a touch pad.

In an embodiment of the present invention, the touch pad includes:

a connection shaft 500;

the fixing device comprises two fixing pieces 200, wherein the two fixing pieces 200 are respectively and fixedly connected to two ends of a connecting shaft 500, a plurality of limit grooves 220 which are distributed at intervals in the circumferential direction are formed in the fixing pieces 200, and the limit grooves 220 of the two fixing pieces 200 are opened in opposite directions; and

the two support plates 300 are provided with sleeve joint parts 310, the sleeve joint parts 310 are sleeved outside the connecting shaft 500, the sleeve joint parts 310 of the two support plates 300 are distributed in the axial direction of the connecting shaft 500 and are provided with limit convex parts 320 in a backward protruding mode along the axial direction, and the support plates 300 can axially move relative to the connecting shaft 500 so as to have a first position and a second position; in the first position, the limit protrusion 320 is engaged with the limit groove 220 to limit the support plate 300 from rotating circumferentially relative to the connection shaft 500; in the second position, the limiting protrusion 320 is separated from the limiting groove 220, and the supporting plate 300 can rotate circumferentially relative to the connecting shaft 500.

As shown in fig. 1, 2, 3 and 4, two fixing members 200 disposed opposite to each other are connected to the connection shaft 500 in a fixed connection manner, and are respectively located at two ends of the connection shaft 500, so that a space is provided on the shaft body of the connection shaft 500 for the support plate 300 to connect, and the space is located between the two fixing members 200 disposed opposite to each other. Two support plates 300 are mounted on the space of the connecting shaft 500 for mounting the support plates 300, and the support plates 300 are movably connected with the connecting shaft 500 in a manner that the support plates 300 can rotate around the axis of the connecting shaft 500 on the connecting shaft 500 and can move along the axial direction of the connecting shaft 500. In this embodiment, the support plate 300 is provided with the socket part 310 connected with the connecting shaft 500 to achieve the movable connection, and the distribution direction of the socket parts 310 of the two support plates 300 is consistent with the axial direction of the connecting shaft 500. The fixing member 200 according to the present invention is provided with a plurality of limiting grooves 220 (circumferential direction), and the groove openings of the limiting grooves 220 are axial, and the position direction is the axial direction of the connecting shaft 500. The support is provided with the limit protrusions 320, wherein the limit grooves 220 of the two fixing members 200 on the connection shaft 500 are disposed in opposite directions, the limit protrusions 320 on the two support plates 300 on the connection shaft 500 are disposed in opposite directions, and the limit grooves 220 can limit the positions of the limit protrusions 320 on the connection shaft 500 in the axial direction, and the fixing members 200 can limit the circumferential rotation of the support plates 300 on the connection shaft 500 because the limit grooves 220 are disposed on the connection shaft 500 in the circumferential direction.

In this embodiment, when the support plate 300 is at the first position, the limit groove 220 is blocked by the limit protrusion 320, and when the support plate 300 is at the second position, the limit protrusion 320 is at the second position when being separated from the limit of the limit groove 220. It can be appreciated that the limiting protrusion 320 can switch between the first position and the second position by moving the supporting member in the axial direction of the connecting shaft 500, and when the limiting protrusion 320 is located at the second position and separated from the limitation of the limiting groove 220, the supporting member can rotate around the connecting shaft 500, so that the relative positions of the two supporting members will change continuously along with the respective rotation movements until the limiting protrusion 320 of the supporting member is clamped into one of the limiting grooves 220 of the fixing member 200 again, so as to fix the relative positions. Because the fixing piece 200 has the plurality of limiting grooves 220, the relative positions of the two supporting pieces on the connecting shaft 500 are also plurality, and in the second state that the touch pad is used as a mouse, the included angle between the two supporting plates 300 can be adjusted according to the hand shape of the user, so that the touch pad in the second state can be attached to the hand of the user, thereby being convenient for the user to operate. The support plate 300 can sense a touch operation of a user in both the first state and the second state of the touch pad, so that the user can perform a corresponding operation on the notebook computer through the touch pad.

As can be appreciated, the adjustment procedure of the shape of the touch pad is as follows: firstly, before the shape of the touch pad is adjusted, the support plate 300 is located at the first position, and a user needs to pull out the limit protrusion 320 of the support plate 300 from the corresponding limit groove 220, so that the support plate 300 is converted from the first position to the second position, and the support plate 300 is separated from the limitation of the fixing piece 200 and can rotate around the connecting shaft 500. When the support plate 300 is in the second position, after the user adjusts the support plate 300 to a proper position, the limiting protrusion 320 in the support plate 300 is inserted into the limiting groove 220 of the fixing member 200, so as to realize the conversion of the support plate 300 from the second position to the first position, and further adjust the shape of the touch pad.

Therefore, in the technical scheme of the invention, in the first state of the touch pad, the touch pad is mounted on the device main body 800, and the two support plates 300 are relatively flattened, i.e. used as a conventional touch pad for a user to perform a simple clicking operation. If a user needs to perform more complicated operations, the touch pad can be removed from the device main body 800, and the shape of the touch pad can be adjusted so that the included angle between the two support plates 300 is adapted to the hand of the user, and the touch pad can be switched to the second state, i.e. the touch pad can be used as a mouse for the user to operate.

Further, the same side of the two support plates 300 is provided with a touch panel 100, and one touch panel 100 is provided with at least one pressure sensor, and in the first state, the pressure sensor is electrically connected to the main control board of the device main body 800, and in the second state, the pressure sensor is communicatively connected to the main control board. It is understood that the touch panel 100 is disposed at the same side of the two support plates 300, i.e., all of the touch panel 100 is located at one side of the touch pad. In the present embodiment, at least one pressure sensor is provided on the touch panel 100 to enable one side of the touch pad to have a function of recognizing external information. Of course, the extraneous information may be identified by providing a capacitive sensor in other embodiments. That is, the support between the electrodes of the capacitive sensor is a structure that deforms with pressure changes, and the deformation of the structure in turn causes capacitance changes, so that information can be identified according to the capacitance changes.

The technical scheme divides the state of the touch control plate into a first state and a second state, wherein the first state is the state when the touch control plate is installed on a notebook computer, and the second state is the state when the touch control plate is separated from the notebook computer. When the touch pad is in the first state, the pressure sensor is electrically connected with the main control board of the device main body 800, that is, the pressure sensor is electrically connected with the device main body 800 to transmit information, so that the connection mode simplifies the connection steps and procedures, and improves the assembly efficiency to a certain extent. The technical scheme simultaneously specifies that when the touch control board is in the second state, the pressure sensor is in communication connection with the main control board, namely, information is transmitted through wireless connection, and the connection mode enables the equipment main body 800 and the touch control board to be in the separated state, the touch control board is not limited by the position of the equipment main body 800, and the use experience of a user is better improved. It will be appreciated that the operating logic of the touch pad in the second state is different from the operating logic in the first state and approximates the operating logic of the mouse in that not all of the two touch panels within the touch pad function as supports, and one function as an operation. The touch panel with supporting function does not have information feedback although the touch panel can also recognize information, the touch panel with operation function has two sensing areas distributed in the left-right direction, the information processing and the information feedback of the sensing areas on the left side and the right side are different, the information processing and the information feedback of the left sensing area and the left key of the mouse are consistent, and the information processing and the information feedback of the right sensing area and the right key of the mouse are consistent. Further, in order to facilitate the operation of the user, a separation line may be provided on the touch panel that functions as an operation to allow the user to distinguish between the sensing areas on the left and right sides.

Further, each supporting plate 300 is formed with a mounting cavity, a battery is accommodated in the mounting cavity, the pressure sensor is fixedly connected to the touch panel 100 and electrically connected to the battery in the corresponding mounting cavity, and in the first state, the battery is electrically connected to the main control board. It will be appreciated that the set up of the battery in the mounting cavity may enable the touch pad to have power to maintain communication and information receiving functions when in the second state. Under the first state, the battery electricity connect in the main control board can charge for the battery to prepare the use of second state, satisfied the continuation of the journey requirement of battery, also improved user's availability factor.

Further, the supporting plate 300 is provided with an exposed conductive portion for contacting and conducting the conductive interface exposed outside the device main body 800 in the first state, the conductive interface is electrically connected to the main control board, and the battery is electrically connected to the conductive portion. It will be appreciated that the conductive portion communicates with the conductive interface when the support plate 300 is in the first state, i.e., the support plate 300 is mounted to the device body 800. The communication of the exposed conductive part and the conductive interface provides a circuit channel for the battery and the main control board, so that the charging requirement of the battery is realized, excessive charging electronic elements are not needed, and the charging cost is saved. Of course, in other embodiments, charging of the battery may also be accomplished by wireless charging.

Further, the touch pad further includes an indicator light exposed from the touch panel 100, where the indicator light is electrically connected to the battery, and is used for indicating the electric quantity of the battery. It can be understood that the indicator light exposed on the surface of the touch panel 100 can intuitively reflect the electric quantity of the battery in the touch panel, so that a user can determine the use mode of the touch panel according to the electric quantity, and timely charge the battery when the electric quantity is low, thereby improving the use experience and efficiency of the user.

Further, in the first state, adjacent sides of the touch panel 100 of the two support plates 300 are spliced. As can be appreciated, the same side of the two support plates 300 is provided with the touch panel 100, and the present technical solution provides for splicing adjacent sides of the touch panel 100, so that the touch panel 100 becomes an integral touch panel, a gap between the touch panels corresponding to the two support plates is eliminated, further electronic elements such as sensors inside the touch panel are protected from damage of dust, and an effect of beautifying the appearance is also played.

Further, the touch pad further includes a roller 600, in the first state, the sensor of the roller 600 is electrically connected to the main control board of the device main body 800, and in the second state, the sensor of the roller 600 is communicatively connected to the main control board; the roller 600 is located between the two sleeved parts 310, rotatably sleeved on the connecting shaft 500, and axially fixed relative to the connecting shaft 500, and in the second state, the roller 600 is disposed protruding from the touch panel 100. It can be appreciated that, on the connecting shaft 500, the roller 600 is disposed between the socket parts 310 of the two support plates 300, and the roller 600 can rotate around the connecting shaft 500, and a roller 600 sensor connected with the main control board is disposed in the touch control board, so that the rotation of the roller 600 can be recognized by the main control board and processed accordingly, and the convenience of use and the operation diversity of the user are improved. In this embodiment, the limiting structures are disposed on two axial sides of the roller 600 to limit the movement of the roller 600 in the axial direction, so that the roller 600 only rotates, and the situation that the sensor of the roller 600 erroneously recognizes the roller 600 is avoided. It should be noted that, when the touch pad is in the first state, the roller 600 should be accommodated inside the touch pad; when the touch pad is in the second state, the roller 600 should be disposed protruding from the touch panel 100, so that the user can directly touch the roller 600, and thus can send an instruction to the main control board through the roller 600. In this embodiment, the touch panel 100 is provided with the avoidance groove 400, when the touch pad is in the first state, the roller 600 is received in the avoidance groove 400, and when the touch pad is in the second state, the roller 600 protrudes out of the touch panel 100 from the notch in the avoidance groove 400. The touch pad in this embodiment further includes the dust cover of elasticity material, and the dust cover block is dodged in groove 400 when the touch pad is in the first state, because the groove 400 of dodging of touch pad communicates the inside and outside of touch pad, so the inside possibility that has outside dust to get into of touch pad, the inboard condition of entering dust of touch pad has been prevented in the setting of dust cover. Because the dust cover is made of elastic materials, when the two support plates 300 rotate relatively, the dust cover can be conveniently pulled out of the avoiding groove 400 without damaging the structure of the touch pad.

Further, the connecting shaft 500 is provided with a mounting ring protrusion on each of two axial sides of the roller 600, the touch pad further includes two return springs 700, the two return springs 700 are sleeved on the connecting shaft 500 on opposite sides of the two mounting ring protrusions, two ends of each return spring 700 are respectively connected to the corresponding mounting ring protrusion and the sleeve connection portion 310, and under the action of the return springs 700, the support plate 300 has a tendency of being maintained at the first position. It will be appreciated that in this embodiment, the limiting mechanisms on both sides of the roller 600 in the axial direction are mounting ring protrusions, which limit the axial movement of the roller 600 on the connecting shaft 500, so that the position of the roller 600 in the axial direction is fixed. A return spring 700 is provided on one surface of the mounting ring convex toward the support plate 300, and the other end of the return spring 700 is connected to the socket part 310 of the support plate 300. It can be appreciated that, no matter the supporting plate 300 is located at the second position or the first position, the return spring 700 is always in a compressed state, and a pushing force to the bottom of the groove of the limiting groove 220 is always generated on the supporting plate 300, so that the limiting protrusion 320 of the supporting plate 300 is pressed in the limiting groove 220 more stably, thereby increasing the stability of the supporting plate 300, further making the touch pad not easy to be decomposed when being used by a user, and improving the use experience of the user. Of course, in other embodiments, the same effect can be achieved by the magnetic force generated by the magnetic attraction of the limit groove 220 and the limit protrusion 320.

Further, the opposite ends of the two fixing members 200 are provided with guiding ring grooves 210, the limiting grooves 220 are concavely arranged in the guiding ring grooves 210, and the limiting protrusions 320 are slidably inserted into the guiding ring grooves 210 at the second position. The guiding groove is arranged to apply circumferential limitation to the limit protrusion 320 at the second position, so that the limit protrusion 320 moves along the groove wall of the guiding groove in the circumferential direction of the connecting shaft 500; in the axial direction of the connecting shaft 500, only the first position and the second position can be switched, so that other sliding possibilities of the limiting convex part 320 at the second position are reduced, the speed of switching the limiting convex part 320 between the first position and the second position is improved, the switching time of a user is correspondingly saved, the efficiency is improved, and the use experience is improved.

As shown in fig. 5, the present invention further provides a notebook computer, which includes an apparatus main body 800 and a touch pad, and the specific structure of the touch pad refers to the above embodiments, and since the touch pad adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein. In the first state, the touch pad is mounted on the device main body 800, and in the second state, the touch pad is separated from the device main body 800 and can be independent from the device main body 800 to be used as a mouse.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A touch pad for a notebook computer, the notebook computer including an apparatus main body, wherein the touch pad is detachably mounted to the apparatus main body to have a first state of being mounted to the apparatus main body and a second state of being separated from the apparatus main body as a mouse, the touch pad comprising:

a connecting shaft;

2. The touch pad of claim 1, wherein the same side of both support plates is provided with a touch panel, one of the touch panels is provided with at least one pressure sensor, the pressure sensor is electrically connected to a main control board of the device body in the first state, and the pressure sensor is communicatively connected to the main control board in the second state.

3. The touch pad of claim 2, wherein each of the support plates has a mounting cavity formed therein, wherein a battery is accommodated in the mounting cavity, and wherein the pressure sensor is fixedly connected to the touch panel and electrically connected to the battery in the corresponding mounting cavity, and wherein the battery is electrically connected to the main control board in the first state.

4. The touch pad of claim 3, wherein the support plate is provided with an exposed conductive portion for contacting and conducting in the first state a conductive interface exposed outside the device body, the conductive interface is electrically connected to the main control board, and the battery is electrically connected to the conductive portion;

and/or, the touch pad further comprises an indicator light exposed out of the touch panel, wherein the indicator light is electrically connected to the battery and used for indicating the electric quantity of the battery.

5. The touch pad of claim 2, wherein adjacent sides of the touch panels of the two support plates are spliced in the first state.

6. The touch pad of claim 2, further comprising a roller, wherein in the first state, an inductor of the roller is electrically connected to a main control board of the device body, and in the second state, an inductor of the roller is communicatively connected to the main control board;

7. The touch pad of claim 6, wherein the connecting shaft is provided with a mounting ring protrusion on each of two axial sides of the roller, the touch pad further comprises two return springs, the two return springs are sleeved on the connecting shaft on opposite sides of the mounting ring protrusions, two ends of each return spring are respectively connected with the corresponding mounting ring protrusion and the corresponding sleeved part, and the supporting plate has a tendency to be maintained at the first position under the action of the return springs.

8. The touch pad of claim 1, wherein the opposite ends of the two fixing members are provided with guide ring grooves, the limit grooves are concavely arranged in the guide ring grooves, and the limit protrusions are slidably inserted in the guide ring grooves in the second position.

9. A notebook computer, comprising:

an apparatus main body; and

the touch pad of any one of claims 1 to 8, wherein in the first state, the touch pad is mounted on the device body, and in the second state, the touch pad is separated from the device body and can be independently used as a mouse.