Ball support structure of trackball mouse and anti-falling trackball mouse

Abstract

The utility model discloses a ball support structure of a trackball mouse, which comprises a ball support body, a trackball can be borne in the ball support body, the ball support body is of an elliptical semispherical shell structure, three rolling supporting pieces are embedded on the side wall of the ball support body close to an opening end, and an ejection hole groove and an induction hole groove are arranged on the side wall of the ball support body far away from the opening end of the ball support body. A circuit board is arranged beside the induction hole groove and detachably and fixedly arranged on the outer wall of the ball support body. By means of the structure, it can be guaranteed that the trackball is smoothly pressed into the ball support body from the outer side of the mouse and prevented from falling out of the ball support body, and meanwhile the trackball can be conveniently ejected out from the inner side (or the bottom) of the mouse; the rolling supporting piece is arranged to be in a structural form of combining the ball supporting piece and the rolling shaft supporting piece, so that smooth rolling contact connection between each supporting piece and the trackball can be ensured, the trackball can be ensured to roll smoothly all the time, and smooth operation of the mouse is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of trackball mice, in particular to a ball holder structure of a trackball mouse and an anti-falling trackball mouse. Background Art

[0002] A trackball mouse is different from a conventional optical mouse. It usually has a trackball embedded in the thumb position of the mouse, allowing the user to control the cursor with only one finger without moving the wrist, which can reduce wrist fatigue when operating the mouse for a long time.

[0003] During production, trackballs are mostly assembled by pushing the ball in from the outside and clamping it in the ball holder. However, the ball needs to be rotated frequently during use, and the ball may fall out during testing. Based on this, the utility model improves the structure of the trackball mouse to achieve the purpose of improving the constraint of the ball holder on the trackball without affecting the rotation of the trackball and avoiding the ball from falling off during normal use. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a ball holder structure of a trackball mouse and an anti-falling trackball mouse, which can ensure that the trackball can be smoothly pressed into the ball holder body from the outside of the mouse and prevent it from falling out of the ball holder body, and at the same time facilitate the trackball to be pushed out from the inside (or bottom) of the mouse, and ensure that the trackball can always roll smoothly in the ball holder body, thereby ensuring smooth operation of the mouse.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0006] The ball holder structure of a trackball mouse comprises a ball holder body, which is a shell structure and is installed in the shell of the trackball mouse, the inner side of which can carry a trackball, and one side of the trackball extends to the outside of the ball holder body and the shell; the ball holder body is a semi-ellipsoidal shell structure and is obliquely installed on the inner wall of the shell, and three rolling supports are embedded on the side wall close to the opening end, the top end of each rolling support extends to the inner side of the ball holder body and can be rollingly connected with the trackball, and in a natural state, the three rolling supports are all in contact with the trackball, and an ejection hole groove and a sensing hole groove are provided on the side wall of the ball holder body away from its open end, the ejection hole groove faces the bottom end of the shell, and a sensor is provided on the side of the sensing hole groove, the sensor is installed on a circuit board and connected with its signal, and the circuit board is detachably fixed on the outer wall of the ball holder body.

[0007] As a further elaboration of the above technical solution:

[0008] In the above technical solution, the three rolling support members include two ball support members and one roller support member:

[0009] Each of the ball support members comprises a first base, a bracket and a ball, each of the first bases is embedded in the ball holder body, each of the brackets is fixed on one of the first bases, and each of the balls is slidably embedded in one of the brackets;

[0010] The roller support member includes a second base, a rotating shaft and a roller. The second base is embedded in the ball holder body, the rotating shaft is mounted on the second base and is slidably connected thereto, the roller is coaxially sleeved on the rotating shaft and is slidably connected thereto, and the roller can slide and / or rotate axially and circumferentially relative to the rotating shaft.

[0011] In the above technical solution, three avoidance holes are formed on the side wall of the ball holder body, and a socket is provided on the ball holder body at the periphery of each avoidance hole. Each socket is connected to the ball holder body through a plurality of connecting ribs and is integrally formed with it, and each socket can match and clamp one of the first base or the second base, and the ends of each ball and roller extend to the inner side of the ball holder body.

[0012] In the above technical solution, a mounting structure is further provided on the outer wall of the ball holder body, and the mounting structure is arranged beside the sensing hole groove and can fix the circuit board.

[0013] An application technology scheme of the above technical scheme is as follows:

[0014] An anti-falling trackball mouse, wherein the ball holder structure described in the above technical solution is installed in the shell of the trackball mouse.

[0015] As a further elaboration of the above technical solution:

[0016] In the above technical solution, the shell includes a face shell and a bottom shell that are matched and snapped together: the bottom shell is provided with a first hole and a first positioning structure, the first hole is provided directly below the ejection hole groove, the first positioning structure is provided next to the first hole, and the ball holder body is provided with a second positioning structure that is adapted to the first positioning structure; the face shell and / or the bottom shell is provided with a second hole that is adapted to the trackball.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting the ball holder body as a semi-ellipsoidal shell structure, installing multiple rolling support members therein, providing a socket on the ball holder body that can support each rolling support member and can deform within a certain range, and providing an ejection hole groove on the ball holder body, it can ensure that the trackball can be smoothly pressed into the ball holder body from the outside of the mouse and prevent it from falling out of the ball holder body, and at the same time facilitate the ejection of the trackball from the inside (or bottom) of the mouse; by setting the rolling support member as a structural form of a combination of a ball support member and a roller support member, it can ensure that each support member maintains a smooth rolling contact connection with the trackball, thereby ensuring that the trackball can always roll smoothly and ensure smooth operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the exploded structure of the ball holder structure in this embodiment;

[0019] Figure 2 is a schematic diagram of the exploded structure of the ball support member in this embodiment;

[0020] Figure 3 is a schematic structural diagram of the roller support member in this embodiment;

[0021] Figure 4 is a schematic diagram of the structure of the ball holder from two viewing angles in this embodiment;

[0022] Figure 5 Schematic diagram of the exploded structure of the mouse in this embodiment.

[0023] In the figure: 10, ball holder body; 11, ejection hole slot; 12, sensing hole slot; 13, avoidance hole slot; 14, card seat; 15, installation structure; 20, shell; 21, surface shell; 22, bottom shell; 30, trackball; 40, rolling support member; 41, ball support member; 42, roller support member; 50, circuit board; 1, first base; 2, bracket; 3, ball; 4, second base; 5, rotating shaft; 6, roller; 7, first hole; 8, first positioning structure; 9, second positioning structure; 16, second hole. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] like Figure 1 , 5As shown, the ball holder structure of the trackball mouse includes a ball holder body 10, which is a shell structure and is installed in the shell 20 of the trackball mouse, and its inner side can carry a trackball 30, and one side of the trackball 30 extends to the outside of the ball holder body 10 and the shell 20; the ball holder body 10 is a semi-ellipsoidal shell structure and is obliquely installed on the inner wall of the shell 20, and three rolling supports 40 are embedded on the side wall near the opening end, and the top end of each rolling support 40 extends to the inner side of the ball holder body 10 and can be rollingly connected with the trackball 30, and in a natural state, the three rolling supports 40 are all in contact with the trackball 30. An ejection hole groove 11 and a sensing hole groove 12 are provided on the side wall of the ball holder body 10 away from its open end, and the ejection hole groove 11 faces the bottom end of the shell 20, and a sensor is provided on the side of the sensing hole groove 12, and the sensor is installed on the circuit board 50 and connected with its signal, and the circuit board 50 is detachably fixed on the outer wall of the ball holder body 10.

[0027] During assembly, the trackball 30 is clamped in the ball holder body 10, and the trackball 30 is rolled. The sensor receives the displacement change of the trackball 30 and transmits the signal to the circuit board 50 for processing; when removing the trackball 30, it only needs to be ejected from the ejection hole 11.

[0028] In this embodiment, the three rolling support members 40 include two ball support members 41 and a roller support member 42, wherein:

[0029] like Figure 2 As shown, each ball support member 41 includes a first base 1, a bracket 2 and a ball 3, each first base 1 is embedded in the ball holder body 10, each bracket 2 is clamped on a first base 1, and each ball 3 is slidably embedded on a bracket 2. In this embodiment, the first base 1 and the bracket 2 are provided with matching slots and hooks, and the bracket 2 is formed with a spherical cavity adapted to the ball 3.

[0030] like Figure 3 As shown, the roller support member 42 includes a second base 4, a rotating shaft 5 and a roller 6. The second base 4 is embedded in the ball holder body 10. The rotating shaft 5 is mounted on the second base 4 and slidably connected thereto. The roller 6 is coaxially sleeved on the rotating shaft 5 and slidably connected thereto. The roller 6 can slide and / or rotate relative to the rotating shaft 5 in the axial and circumferential directions. In this embodiment, the second base 4 is a frame structure, and step holes are formed on both side walls thereof to match the rotating shaft 5 and limit its axial displacement. The roller 6 is sleeved on the rotating shaft 5. The inner diameter of the roller 6 is slightly larger than the outer diameter of the rotating shaft 5. The axial length of the roller 6 is less than the distance between the two step holes, so that it can slide and roll in the axial and circumferential directions on the rotating shaft 5.

[0031] It can be understood that the roller support 42 is in line contact with the trackball 30, which can bear the pressure applied in a certain direction when the finger presses the trackball 30, and can smoothly transmit the pressure to other directions through the relative rotation and relative rolling of the roller 6 and the rotating shaft 5, while the two ball support members 41 are in point contact with the trackball 30, which can smoothly transmit the pressure in all directions. The three cooperate to achieve smooth rolling of the trackball 30 in all directions. In this embodiment, the roller support member 42 is installed at a place far away from the conventional thumb force point and close to the rear end of the mouse, so as to better bear the pressure and reduce the wear of the balls 3 on the two ball support members 41, and at the same time facilitate the ejection operation when removing the trackball 30.

[0032] like Figure 4 As shown, three avoidance holes 13 are formed on the side wall of the ball holder body 10, and a socket 14 is provided on the periphery of each avoidance hole 13 on the ball holder body 10. Each socket 14 is connected to the ball holder body 10 through a plurality of connecting ribs and is integrally formed therewith, and each socket 14 can match and be clamped with a first base 1 or a second base 4, and the ends of each ball 3 and roller 6 extend to the inner side of the ball holder body 10; a mounting structure 15 is also provided on the outer wall of the ball holder body 10, and the mounting structure 15 is arranged next to the sensing hole 12 and can fix the circuit board 50.

[0033] In this embodiment, each holder 14 is provided with one or more elastic ribs of a cantilever structure beside the connecting ribs; when assembling the trackball 30, it is pressed into the ball holder body 10 with force, and the trackball 30 pushes each rolling support member 40 to press a holder 14, forcing the connecting ribs and elastic ribs thereon to deform and expand outwards to accommodate the trackball 30 and press the rolling support member 40 against its surface. In application, the number, position and size of the connecting ribs (and elastic ribs) should be reasonably set according to the actual material and friction coefficient of the ball holder body 10 and the trackball 30, so as to ensure that the trackball 30 can slide smoothly on the basis of stable clamping.

[0034] The utility model sets the ball holder body 10 as a semi-ellipsoidal shell structure, installs a plurality of rolling support members 40 therein, sets a holder 14 on the ball holder body 10 which can support each rolling support member 40 and can be deformed within a certain range, sets an ejection hole groove 11 on the ball holder body 10, so as to ensure that the trackball 30 can be smoothly pressed into the ball holder body 10 from the outside and prevent it from falling out of the ball holder body 10, and facilitate the ejection of the trackball 30 from the inside (or bottom) of the mouse; by setting the rolling support member 40 as a structural form in which a ball support member 41 and a roller support member 42 are combined, it can ensure that each rolling support member 40 maintains a smooth rolling contact connection with the trackball 30, thereby ensuring that the trackball 30 can always roll smoothly and ensure smooth operation.

[0035] An application embodiment of the above ball support structure is as follows:

[0036] like Figure 5 As shown, an anti-drop trackball mouse is provided, wherein the housing 20 of the trackball mouse is provided with the ball holder structure of the above embodiment.

[0037] like Figure 4-5 As shown, in this embodiment, the shell 20 includes a matching and snap-fitting face shell 21 and a bottom shell 22: the bottom shell 22 is provided with a first hole 7 and a first positioning structure 8, the first hole 7 is arranged directly below the ejection hole groove 11, the first positioning structure 8 is arranged beside the first hole 7, and the ball holder body 10 is provided with a second positioning structure 9 adapted to the first positioning structure 8; the face shell 21 and / or the bottom shell 22 is provided with a second hole 16 adapted to the trackball 30.

[0038] During assembly, first snap the trackball 30 onto the ball holder body 10, then match and connect the first positioning structure 8 of the ball holder body 10 with the second positioning structure 9 of the bottom shell 22 to fix the ball holder structure on the bottom shell 22, and finally align the second hole 16 with the trackball 30 and snap the surface shell 21 onto the bottom shell 22.

[0039] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A ball holder structure of a trackball mouse, comprising a ball holder body, wherein the ball holder body is a shell structure and is installed in the shell of the trackball mouse, and the inner side of the ball holder body can carry a trackball, and one side of the trackball extends to the outer side of the ball holder body and the shell; characterized in that: The ball holder body is a semi-ellipsoidal shell structure and is obliquely installed on the inner wall of the shell. Three rolling support members are embedded on the side wall near the opening end. The top end of each rolling support member extends to the inner side of the ball holder body and can be rollingly connected to the trackball, and in a natural state, the three rolling support members are all in contact with the trackball. An ejection hole groove and a sensing hole groove are provided on the side wall of the ball holder body away from its open end. The ejection hole groove faces the bottom end of the shell. A sensor is provided next to the sensing hole groove. The sensor is installed on the circuit board and connected to its signal. The circuit board is detachably fixed to the outer wall of the ball holder body.

2. The ball holder structure according to claim 1, characterized in that: The three rolling support members include two ball support members and one roller support member: Each of the ball support members comprises a first base, a bracket and a ball, each of the first bases is embedded in the ball holder body, each of the brackets is fixed on one of the first bases, and each of the balls is slidably embedded in one of the brackets; The roller support member includes a second base, a rotating shaft and a roller. The second base is embedded in the ball holder body, the rotating shaft is mounted on the second base and is slidably connected thereto, the roller is coaxially sleeved on the rotating shaft and is slidably connected thereto, and the roller can slide and / or rotate axially and circumferentially relative to the rotating shaft.

3. The ball holder structure according to claim 2, characterized in that: Three avoidance holes are formed on the side wall of the ball tray body, and a socket is provided on the ball tray body at the periphery of each avoidance hole. Each socket is connected to the ball tray body through a plurality of connecting ribs and is integrally formed with the ball tray body, and each socket can match and clamp one of the first base or the second base, and the ends of each ball and roller extend to the inner side of the ball tray body.

4. The ball holder structure according to claim 1, characterized in that: A mounting structure is also provided on the outer wall of the ball holder body. The mounting structure is arranged beside the sensing hole groove and can fix the circuit board.

5. An anti-falling trackball mouse, characterized in that: The housing of the trackball mouse is provided with a ball holder structure as claimed in any one of claims 1 to 4.

6. The anti-falling trackball mouse according to claim 5, characterized in that: The shell includes a matching and snap-connected face shell and bottom shell: the bottom shell is provided with a first hole and a first positioning structure, the first hole is provided directly below the ejection hole groove, the first positioning structure is provided beside the first hole, and the ball holder body is provided with a second positioning structure adapted to the first positioning structure; the face shell and / or the bottom shell is provided with a second hole adapted to the trackball.

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