JP4393248B2 - Portable device and trackball used for it - Google Patents

Description

  The present invention relates to a portable device typified by a mobile phone or a PDA and a trackball used for the portable device.

In recent years, various electronic devices have been reduced in size and weight, and mobile devices such as mobile phones and PDAs have become very popular.
A trackball of such a conventional portable device will be described with reference to FIGS. 7 to 10 by taking a mobile phone as an example.

FIG. 7 is an external perspective view of a conventional mobile phone. The device main body 1 has a configuration in which a first housing 2 and a second housing 3 are foldably coupled. A display unit 4 made of liquid crystal or the like is disposed on the upper surface side of the first housing 2, and an input operation unit 5 is disposed on the upper surface side of the second housing 3. The first housing 2 and the second housing 3 can be folded so that the display unit 4 and the input operation unit 5 are in an opposed state in a folded state.
The input operation unit 5 includes a numeric keypad 6 in which individual push button switches are arranged in a predetermined arrangement state, and a trackball 7 used for moving a cursor or a pointer on a predetermined screen displayed on the display unit 4. It is configured.

  Each of the above-described elements is disposed on a wiring board (not shown in FIG. 7) housed in the first housing 2 and the second housing 3, and the wiring boards are electrically connected to each other by an FPC or the like. It has become. The input / output signals of the respective elements are controlled by a control unit comprising a microcomputer or the like disposed in the second casing 3 (not shown), and a predetermined function is activated according to the operation. Elements such as a microphone and a speaker are also mounted on the device main body 1, but description thereof is omitted.

Here, the configuration of the trackball 7 will be described with reference to FIGS.
As shown in the exploded perspective view of the portion where the trackball is disposed in FIG. 8, the trackball 7 is placed on the main body 12 that rotatably accommodates the ball 11 and the wiring substrate 20 in the second housing 3. The magnetic detection element 21 and the switch 22 are arranged.

  As shown in the cross-sectional view of the portion where the trackball is disposed in FIG. 9, the main body 12 is configured by combining an upper cover 13 and a lower base 14, and has a substantially square shape when viewed from above. A rotating roller 15 supported by the base portion 14 is rotatably disposed on each side portion of the main body portion 12. As shown in the cross-sectional view of FIG. 10, a magnet 16 in which S and N poles are alternately magnetized in the circumferential direction is fixed to one end of each rotating roller 15.

  Reference numeral 17 shown in FIG. 9 denotes a spring member having one end fixed to the base portion 14, and biases the ball 11 accommodated in the main body portion 12 upward on the other end side so that the ball 11 is in the circular central hole of the cover 13. It is pressed to a state protruding a predetermined amount from 13A. The ball 11 in the biased state is set to be separated from each rotating roller 15 by a predetermined distance.

  On the other hand, the second housing 3 side to which the main body 12 of the trackball 7 having the above-described configuration is mounted has a circular hole 3A at the upper surface position where the trackball 7 is disposed, and the hole 3A. The above-described four magnetic detection elements 21 are arranged on the wiring board 20 below, and a self-returning switch 22 is arranged at the center thereof.

  The main body 12 of the trackball 7 is placed on the wiring board 20 so as to be regulated from the side by a pair of prismatic positioning projections 23 disposed in the second housing 3. . From the upper side, the main body 12 has a ring-shaped lid 24 fitted in the hole 3A of the second housing 3, and the lower surface of the lid 24 presses the outer peripheral portion of the upper surface of the cover 13, thereby allowing the trackball 7 is attached. The lid 24 is configured to be detachable.

In the mounted state as the trackball 7, as shown in FIG. 10, the magnets 16 and the magnetic detection elements 21 are positioned facing each other in the vertical direction, and the balls 11 and the switch 22 are also opposed in the vertical direction. Located in the state.
Further, the upper portion of the ball 11 protruding from the central hole 13 </ b> A of the cover 13 protrudes by a predetermined amount from the upper surface of the second housing 3 through the central hole of the lid portion 24.

The conventional trackball 7 having the above-described configuration is configured such that when the lid portion 24 is removed, the main body portion 12 constituting the rotation mechanism portion including the ball 11 can be replaced.
The operation of the trackball 7 is as follows.

When the ball 11 is rotated, the spring member 17 is slightly bent downward and the ball 11 moves to the operation direction side, comes into contact with the corresponding rotating roller 15 and rotates the rotating roller 15. As a result, the magnet 16 of the rotating roller 15 rotates, and the magnetic field change is detected by the corresponding magnetic detection element 21 to detect the rotation operation direction and the operation amount.
On the other hand, when the ball 11 is pushed in, the ball 11 pushes down the spring member 17 and switches the state of the lower switch 22 on the lower surface of the spring member 17. That is, the switch 22 connected to the outer fixed contact 25 is in contact with the central fixed contact 26 and makes both contacts conductive. When the pushing operation force on the ball 11 is removed, the ball 11 is pushed back to the original state by the restoring force of the switch 22 and the spring member 17.

The trackball 7 is rotated and pushed, for example, when the cursor displayed on the display unit 4 is moved or when a desired item or icon is selected.
As described above, the conventional mobile phone performs a call or the like by operating the input operation unit 5 including the trackball 7 while visually checking the contents displayed on the display unit 4. For example, Patent Document 1 is known as a document related to this type of prior art.
JP 2002-373055 A

  The conventional mobile phone as described above is preferable in that it can be differentiated in that a trackball is mounted and the entire main body of the trackball is replaced as necessary. However, since the entire main body is replaced, there may be a cost disadvantage.

  The present invention solves such a conventional problem, and the user can easily replace only the trackball ball mounted on the input operation unit of the portable device according to his / her preference. Another object of the present invention is to provide a portable device capable of maintaining good operability of the trackball and a trackball used therein.

In order to achieve the above object, the portable device of the present invention includes:
A portable device comprising a housing having an operation unit including a trackball and a display unit, wherein the content displayed on the display unit is selected by a rotation operation of the trackball to the ball,
A base part that rotatably supports four rotating rollers arranged in a square shape with a shaft thereof, and a central hole that is coupled to the base part and is provided in accordance with the central position of the square. A trackball body having a cover and a spring member extending to a position below the central hole;
A ball abutting on the spring member of the main body and having a smaller diameter than the central hole of the cover, and holding the main body movably in the horizontal direction in a range corresponding to at least an assembly gap. Part,
A holding lid that has a circular hole having a diameter smaller than the diameter of the ball and is detachably incorporated above the holding portion of the housing so as to prevent the ball from coming off upward at the edge of the circular hole. And a position restricting portion formed on the lower surface of the holding lid, and an engaging portion provided on the main body corresponding to the position restricting portion, and the position restricting portion is engaged with the engaging portion. , Position correction means of the main body for aligning the center position in the horizontal direction of the central hole of the cover of the main body and the circular hole of the pressing lid,
Is provided.

  According to this configuration, it is possible to correct the positional deviation between the pressing lid and the main body of the trackball only by attaching the pressing lid to the housing. That is, the user can freely change only the ball that suits his / her preference, and can prevent the ball from being incorporated in the misaligned state with respect to the main body at the time of the replacement, and the good operability of the trackball is maintained.

  In a preferred embodiment of the present invention, the wiring board disposed in the housing includes an LED, and at least one of the ball and the pressing lid is made of a light-transmitting material, and the ball and the pressing plate are formed by the LED. It is configured to illuminate at least one of the lids. This makes it easy to identify the position of the ball even at night and improves operability.

  In another preferred embodiment of the present invention, there are a plurality of colors emitted by the LEDs, and combinations of these colors, or lighting, extinguishing, and blinking states correspond to the operation state of the ball. According to this configuration, the outline of the next operation can be visually recognized in the illuminated state of the ball.

  In still another preferred embodiment of the present invention, when the trackball is not operated, the ball is pressed against the presser lid by an upward biasing force of the spring member, and between the rotating rollers. A predetermined gap is maintained, and at the time of operation, the spring member is bent and the ball comes into contact with the rotating roller corresponding to the rotating operation direction. As a result, the play of the ball when the trackball is not operated can be restricted, and unnecessary signal generation can be prevented even while being carried.

The present invention also provides a base having a rotating roller arranged in a square shape and a main body comprising a cover having a central hole coupled to the base, and a rotating roller having a smaller diameter than the central hole of the cover. At least an assembly gap is provided between the ball, a rotation detection unit that is disposed in the device and detects the rotation state of the rotating roller, a device-side member that regulates the upper position of the ball at the edge of a circular hole, and the main body. A holding portion that is movably held in the horizontal direction with respect to the device, a position restricting portion provided on the device-side member, and provided on the main body and engaged with the position restricting portion. Thus, a trackball for portable equipment is provided that includes a correcting means for aligning the center position in the horizontal direction between the circular hole and the central hole of the cover.
Since the trackball can be put into a mounted state in which the main body is easily combined in a regular state in the device via the correction means, it is possible to prevent incorporation of the ball in a state of misalignment with respect to the main body when the ball is replaced.

  According to the present invention, only the trackball ball mounted on the input operation unit can be replaced by the user himself / herself according to his / her preference. Can be prevented. Therefore, a portable device that can maintain good operability and a trackball used therefor can be realized.

  An embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the element of the same structure as before, and description is abbreviate | omitted.

Embodiment 1
The first embodiment is characterized by the trackball structure and the structure of the mounting part to the second housing, and the other parts are the same as the conventional ones, and the description thereof is omitted.
FIG. 1 is a cross-sectional view of a trackball arrangement portion which is a main part of a portable device according to the present embodiment, and FIG. 2 is an exploded perspective view thereof.

The main body portion 42 of the trackball 41 includes a base portion 14 and a cover 51 coupled to the upper portion thereof, and has a substantially square shape when viewed from above.
The rotating roller 15 is arranged on each side of the main body 42 so that the axes thereof form a square and are rotatably supported by the base 14. A magnet 16 is fixed to one end of the rotating roller 15. The base portion 14 includes a spring member 17 that urges the ball 61 upward. The ball 61 is not in contact with each rotating roller 15 in a non-operating state. The above configuration is the same as the conventional one.

  The cover 51 has a central hole 52 having a diameter larger than that of the ball 61, so that only the ball 61 can be replaced. Further, as shown in FIG. 4, the main body 42 includes prismatic protrusions 56, 57, 58 and 59 that protrude horizontally from the side wall of the cover 51. These configurations are the most different from the conventional ones.

  As shown in the top view of FIG. 3 and the enlarged top view of FIG. The self-returning type switch 22 and the four magnetic detection elements 21 are arranged on the wiring board 60 below the hole 62 as in the prior art. 1 corresponds to a cross-sectional view taken along the line II of FIG.

On the wiring board 60, four position restricting pieces 66, 67, 68 and 69 serving as holding parts configured in the second housing 65 are arranged outside the magnetic detection element 21. These position restricting pieces 66, 67, 68 and 69 are made of elastic synthetic resin prisms, and have claw portions 66A, 67A, 68A and 69A in the horizontal direction at the top. The position restricting pieces 66 and 68 further have claw portions 66B and 68B extending from the left side surface toward the main body portion 42, respectively.
As in the conventional case, the main body 42 is placed on the wiring board 60 so that the balls 61 and the switches 22, the magnets 16, and the magnetic detection elements 21 are opposed to each other in the vertical direction. .

  In the mounting state, the projections 56, 57, 58 and 59 have their upper surfaces facing the lower surfaces of the claw portions 66A, 67A, 68A and 69A, respectively, so that the main body portion 42 is pulled out upward. Stopped. Further, the side surfaces of the protrusions 56 and 58 face the claw portions 66B and 68B, respectively, and cooperate with the prism portions of the four position restricting pieces to prevent the main body portion 42 from being greatly displaced. The opposing state of these protrusions and claw portions is a holding state with a predetermined gap so that the main body portion 42 can move in the horizontal direction within a limited range.

  That is, there is at least an interval that can be absorbed by an assembly gap, which will be described later, between the front end surfaces and side surfaces of the protrusions 56, 57, 58, and 59 and the prisms of the position restricting pieces 66, 67, 68, and 69, respectively. The main body 42 can be moved in the horizontal direction within the interval.

  On the other hand, in the main body portion 42 arranged in the second housing 65 as described above, the ball 61 is placed on the spring member 17 and is configured to be detachable from the second housing 65 from above. A pressing lid 71 is attached. The ball 61 is urged upward by the spring member 17, and the upper edge of the circular hole 72 of the presser cover 71 is restricted from coming off upward. If the ball 61 is thus urged upward and pressed against the upper edge of the circular hole 72, play of the ball 61 when not in operation can be restricted. Therefore, it is possible to prevent the ball 61 from moving and generating unnecessary signals while being carried.

  The presser cover 71 includes a lower cylindrical portion 73 that is concentric with the circular hole 72 and has a triangular cross section, and an outer surface of the lower cylindrical portion 73 is engaged with an inner edge portion of the central hole 52 of the cover 51. . The inner edge portion of the central hole 52 of the cover 51 is formed on an inclined surface having a large diameter at the top.

  The pressing lid 71 has three engaging claws 74 protruding downward at the outer peripheral position of the ring portion. On the other hand, on the inner edge of the hole 62 of the second housing, there are three flanges 63 that are lowered by one step. The presser cover 71 has a structure in which the engaging claw 74 is inserted into the gap between the flange parts 63 and the claw part is hooked on the back surface of the flange part 63 by slightly rotating the presser cover.

In such a structure in which two separate members are combined and locked, a gap for assembly is required, for example, between the outer periphery of the ring portion of the pressing lid 71 and the inner edge portion of the hole 62 of the second housing 65. The assembly gap is set in the horizontal direction.
And the space | interval between the front-end | tip surface and side surface of each processus | protrusion 56-59 in the mounting state of the main-body part 42 mentioned above, and the prism part and nail | claw part 66B, 68B of the position control pieces 66-69 which each oppose is the above-mentioned. The dimension is set at least equal to or larger than the dimension of the assembly gap.

  The trackball 41 according to the first embodiment and the arrangement portion thereof are configured as described above. When the presser lid 71 is removed from the second housing 65, the main body 42, which is prevented from being pulled upward by the claw portions 66A, 67A, 68A, and 69A of the position regulating pieces 66 to 69, is maintained in the mounted state. Only the ball 61 having a smaller diameter than the central hole 52 of the cover 51 can be replaced.

  The operation of the track ball 41 is the same as in the prior art, and the rotation of the ball 61 causes the spring member 17 to bend slightly downward, the ball 61 moves to the operation direction side, abuts against the corresponding rotation roller 15, and the rotation roller 15 is rotated. The rotation of the rotating roller 15 changes the magnetic field of the magnet 16 fixed thereto. The magnetic detection element 21 corresponding to the change in the magnetic field detects the rotation operation direction and the operation amount. When the ball 61 is pushed in, the ball 61 pushes down the spring member 17 to switch the outer fixed contact 25 and the central fixed contact 26 of the switch 22 below to the conductive state. When the pushing operation force is removed, the switch 22 and the spring member 17 are removed. With this restoring force, the ball 61 is pushed back to the original state.

Here, a procedure for replacing the ball 61 will be described.
First, the holding lid 71 is removed from the second housing 65, and the mounted ball 61 is taken out. At this time, the central hole 52 of the cover 51 has a larger diameter than the diameter of the ball 61, and the main body portion 42 has the top ends of the protrusions 56 to 59 moved upward by the claw portions 66 </ b> A to 69 </ b> A of the position restricting pieces 66 to 69. Therefore, the removal work of the ball 61 can be performed satisfactorily.

  Next, a new ball 61 is placed on the spring member 17, and the presser lid 71 is attached to the hole 62 of the second housing 65 so that the upper portion of the ball 61 protrudes from the circular hole 72 of the presser cover 71. . At this time, the position of the circular hole 72 of the presser cover 71 that prevents the ball 61 from being pulled upward is set in the horizontal direction within the range of the assembly gap, depending on the combination state of the presser cover 71 with the second housing 65. Will have a degree of freedom.

  In order to regulate this degree of freedom, the first embodiment has an inclined surface that decreases in diameter as the outer surface becomes lower, and the lower cylindrical portion 73 of the presser lid 71 and decreases in diameter as the inner surface becomes lower. Such a sloped surface is combined with the central hole 52 of the cover 51 while being engaged. That is, when the presser lid 71 is engaged with the second housing 65, the center position in the horizontal direction between the circular hole 72 of the presser lid 71 and the central hole 52 of the cover 51 is vertically changed by the engagement of the inclined surfaces. The position of the main body 42 is corrected in the horizontal direction and moves so as to match. The outer surface of the lower cylindrical portion 73 of the pressing lid 71 corresponds to a position restricting portion, and the inner edge of the central hole 52 of the cover 51 functions as an engaging portion.

With such a configuration, since the center positions of the circular hole 72 of the holding lid 71 and the central hole 52 of the cover 51 are aligned vertically, it is possible to prevent the ball 61 from being combined with the main body portion 42 in a misaligned state. it can. As a result, it is possible to prevent inconvenience such as deterioration in operability due to the exchange of only the ball 61.
With this configuration, even if the user or the like of the device replaces the ball, the horizontal position of the main body portion 42 is naturally corrected by simply fitting the holding lid 71 into the second housing 65, and the ball The positional relationship between 61 and the circular hole 72 and between the ball 61 and the main body 42 can be incorporated in a normal state. Therefore, there is almost no influence on the trackball function that is likely to occur during ball exchange.

  Thus, according to the first embodiment, if there are a plurality of replacement balls 61, the user can replace only the balls 61 according to his / her preference, which is advantageous in terms of cost.

  In the above example, the presser lid 71 can be separated from the second housing, but may be coupled to the second housing by, for example, a hinge. The presser lid 71 may be detachable from the hole 62.

  In the above example, the position restricting pieces 66 to 69 are provided on the wiring board 60 side, but can also be provided on the holding lid side as shown in FIG. In FIG. 5, it is shown that the pressing lid 81 serving as the pressing lid 71 has position regulating pieces 86 and 89 instead of the position regulating pieces 66 and 69. Although not shown, the pressing lid 81 has a position restricting piece instead of the position restricting pieces 67 and 68. The presser lid 81 has a circular hole 82, and has a lower cylindrical portion 83 at the edge thereof.

  In the above example, two protrusions are provided on the two side surfaces of the main body 42, and two position restricting pieces are provided corresponding to these protrusions. However, if the protrusions and the position restricting pieces have a certain width, it is possible to modify the protrusions and the position restricting pieces by one, and the deformation is limited to the specific example shown here. It is not something.

Embodiment 2
The structure according to the present embodiment is almost the same as the structure according to the first embodiment, and is intended to improve the operability when the ball 61 is replaced with a light transmissive one.

  The difference from the first embodiment is only that LED 91 for illuminating ball 61 is arranged on wiring board 60 as shown in FIG. For this reason, the same reference numerals are given to the same components as those of the first embodiment, and the description thereof will be omitted. The LED 91 may be switchable between one color or a plurality of colors. Further, as described above, the user can replace the ball 61 according to the necessity of illumination of the ball 61.

  The illumination control of the LED 91 is performed by a control unit composed of a microcomputer or the like disposed in the second housing 65 (not shown), controlled to various illumination patterns according to various operation states, a combination of the illumination colors, Or it contributes to the improvement of operability of various operations in the illumination state such as lighting, extinguishing and blinking. It is also possible to assist in identifying the position of the ball 61 by illuminating it at night or the like.

  As an example in which the operability is improved by using the LED, for example, when the invalid key is operated during the operation of the numeric keypad 6, the LED 91 is caused to shine red at high speed, and the light from the LED 91 is transmitted from the ball 61. Notify that you have made a mistake in the illuminated state. At this time, since the position of the ball 61 is usually set in a portion closer to the display unit 4 side than the area where the numeric keypad 6 is arranged, the user who operates the numeric keypad 6 while viewing the display unit 4 Therefore, the fast blinking state of the ball 61 is easy to visually recognize.

  Even if the operation is not performed by the invalid key, if the light emission state (color, blinking state, lighting time, etc.) of the LED 91 is set in advance according to the operation content of the numeric keypad 6 or the like, it is visually determined according to the operation state. Operation confirmation can be performed at the same time, and operability can be improved. At this time, the outline of the next operation may be visually appealed while the ball 61 is illuminated.

  Furthermore, the lighting state linked to the telephone function, mail function, i-mode, etc. may be controlled. For example, when the device is in the open state, it is illuminated or blinks when a call or mail is received, or when the i-mode pictogram is blinking. The light from the ball 61 becomes auxiliary to the operation such as blinking in synchronization with the pictograph, and the usability is improved. The numeric keypad 6 and the like are also configured so that they can be illuminated. For example, when the incoming call is visually recognized by the light from the ball 61 and the ball 61 is operated, the numeric keypad 6 portion blinks in synchronization with the operation of the ball 61. Etc., it is possible to provide visual interlocking and further improve operability. At this time, if the illumination state of the numeric keypad 6 is changed depending on how the ball 61 is rotated, it also assists in identifying the operation amount. In particular, it is preferable that the ball 61 and the numeric keypad 6 are lit in different colors because the balls 61 themselves can be easily classified.

  Further, the case where the ball 61 itself is illuminated has been described above. However, the ball 61 is made of a light non-transmitting material, and the edge of the circular hole 72 holding at least the upper portion of the ball 61 of the holding lid 71 is made to transmit light. However, the same idea as described above can be obtained. In this case, since the ball 61 made of a sphere is illuminated from the surroundings, the shaded state is excellent.

  As described above, since only the ball 61 can be exchanged freely, the ball 61 is replaced with a light-transmitting material as necessary, and the operability is improved with a preset illumination setting. What is planned can be easily realized.

  The portable device according to the present invention and the trackball used in the portable device according to the present invention can be easily replaced by the user himself / herself according to his / her preference only for the trackball mounted on the input operation unit. It is possible to prevent the ball from being assembled with the main body when the ball is misaligned, and to maintain the good operability of the trackball. Therefore, it is useful when configuring an input operation unit of a mobile device typified by a mobile phone or a PDA.

It is a longitudinal cross-sectional view of the trackball arrangement | positioning part which is the principal part of the portable apparatus by the 1st Embodiment of this invention. It is a disassembled perspective view of the principal part. It is a top view by the side of the 2nd housing | casing of the state which removed the main-body part of the trackball. It is an enlarged top view by the side of the 2nd housing | casing in the state in which only the main-body part of the trackball was mounted | worn. It is a longitudinal cross-sectional view of the principal part of a modification. It is a top view by the side of the 2nd housing | casing of the state which removed the main-body part of the trackball which is the principal part by the 2nd Embodiment of this invention. It is an external appearance perspective view of the conventional mobile phone. It is a disassembled perspective view of the arrangement | positioning part of the trackball which is the principal part. It is a longitudinal cross-sectional view of the trackball arrangement part which is the main part. It is a longitudinal cross-sectional view in a rotation roller position in the arrangement | positioning part of the trackball which is the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 14 Base 15 Rotating roller 16 Magnet 17 Spring member 21 Magnetic detection element 22 Switch 25 Outer fixed contact 26 Central fixed contact 41 Trackball 42 Main body 51 Cover 52 Central hole 56-59 Protrusion 60 Wiring board 61 Ball 63 Hook 65 Second Case 62 Hole portion 66-69, 86, 89 Position regulating piece 66A-69A, 66B, 68B Claw portion 71, 81 Holding lid 74 Engagement claw 72 Circular hole 73 Lower tube portion 91 LED

Claims (5)

A portable device comprising a housing having an operation unit including a trackball and a display unit, wherein the content displayed on the display unit is selected by a rotation operation of the trackball to the ball,
A base part that rotatably supports four rotating rollers arranged in a square shape with a shaft thereof, and a central hole that is coupled to the base part and is provided in accordance with the central position of the square. A trackball body having a cover and a spring member extending to a position below the central hole;
A ball having a diameter smaller than the central hole of the cover, which is in contact with the spring member of the main body;
A holding unit for holding the main body movably in the horizontal direction within the housing in a range corresponding to at least a gap for assembly;
A holding lid that has a circular hole having a diameter smaller than the diameter of the ball and is detachably incorporated above the holding portion of the housing so as to prevent the ball from coming off upward at the edge of the circular hole. And a position restricting portion formed on the lower surface of the holding lid, and an engaging portion provided on the main body corresponding to the position restricting portion, and the position restricting portion is engaged with the engaging portion. , Position correction means of the main body for aligning the center position in the horizontal direction of the central hole of the cover of the main body and the circular hole of the pressing lid,
A portable device comprising:   The wiring board disposed in the housing includes an LED, and at least one of the ball and the pressing lid is made of a light-transmitting material, and the LED illuminates at least one of the ball and the pressing lid. The portable device according to claim 1.   The portable device according to claim 2, wherein the LED has a plurality of light emission colors, and combinations of these colors, or lighting, extinguishing, and blinking states correspond to the operation state of the ball.   When the trackball is not operated, the ball is pressed against the pressing lid by the upward biasing force of the spring member, and a predetermined gap is maintained between the rotating rollers. The portable device according to claim 1, wherein the ball comes into contact with the rotating roller corresponding to the rotation operation direction while the spring member is bent. A base having a rotating roller arranged in a square shape and a main body composed of a cover having a central hole coupled to the base, a ball having a smaller diameter than the central hole of the cover, and a ball for rotating the rotating roller. A rotation detection unit arranged to detect the rotation state of the rotating roller, a device-side member that regulates the upper position of the ball at the edge of a circular hole, and the main body within a range according to at least an assembly gap, A holding part that is movably held in the horizontal direction with respect to the device, a position restricting part provided on the device side member, provided on the main body, engaged with the position restricting part, and the circular hole and the A trackball for portable equipment comprising a correcting means for aligning the center position in the horizontal direction with the center hole of the cover.

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