Lensless trackball with optical mouse function

Abstract

The utility model relates to the technical field of input equipment, in particular to a lens-free trackball with an optical mouse function, which comprises a base, a ball bowl groove is arranged on the upper side of the base, a track rolling ball is placed in the ball bowl groove, and the track rolling ball can freely roll in the ball bowl groove. A PCB is arranged on the lower side or the periphery of the base, a displacement detection chip and a light-emitting device are arranged on the PCB, the light-emitting device is used for emitting light to the ball bowl groove, and the displacement detection chip is used for detecting the rolling track of the track rolling ball. Compared with the prior art, the lens-free trackball with the optical mouse function can realize accurate positioning of the trackball without a lens assembly, the structure is simplified, the production and assembly difficulty is greatly reduced, the improvement of the positioning accuracy of the mouse is facilitated, and the waterproof function of the trackball mouse is easier to realize.

Description

TECHNICAL FIELD

[0001] The utility model relates to input device technical field, especially the lensless trackball with optical mouse function. BACKGROUND

[0002] The prior art optical mouse usually needs lens assembly to realize the capture of reflected light, and the structure is relatively complex, and the plastic injection molding is influenced by factors such as temperature and injection molding machine pressure, so that the plastic part has tolerance problems, which also causes adverse effects on the positioning accuracy of the mouse, and greatly increases the production and assembly difficulty. UTILITY MODEL CONTENTS

[0003] In order to overcome the above problems, the utility model provides a lensless trackball with optical mouse function which can effectively solve the above problems.

[0004] The utility model discloses a technical scheme that provides a lensless trackball with optical mouse function, which comprises a base, a ball bowl groove is arranged on the upper side of the base, a track rolling ball is placed in the ball bowl groove, and the track rolling ball can freely roll in the ball bowl groove; a PCB board is arranged on the lower side or a certain region around the base, a displacement detection chip and a light emitting device are arranged on the PCB board, the light emitting device is used for emitting light to the ball bowl groove, and the displacement detection chip is used for detecting the rolling track of the track rolling ball.

[0005] Preferably, an inner cover is arranged on the outer side of the track rolling ball, an outer cover is arranged on the outer side of the inner cover, and the outer cover is clamped and fixed with the base.

[0006] Preferably, a plurality of side grooves are arranged on the inner side wall of the ball bowl groove, a rolling ball is arranged in each side groove, and the rolling ball is in contact with the track rolling ball.

[0007] Preferably, a circular ring step protruding upward is arranged at the opening of the ball bowl groove, a plurality of vertical grooves are arranged on the outer side of the circular ring step, the bottom of each vertical groove is communicated with a horizontal groove, a limiting cylinder is arranged in the horizontal groove, a locking block is arranged on the inner side of the outer cover, a limiting circular groove matched with the limiting cylinder is arranged on the locking block, the locking block is embedded in the vertical groove, and the locking block is rotated and embedded in the horizontal groove until the limiting cylinder is clamped into the limiting circular groove to realize locking.

[0008] Preferably, the inner cover is annular, an inner matching port is arranged in the middle part of the inner cover, and a part of the track rolling ball protrudes from the inner matching port.

[0009] Preferably, a circle of fixing plates is arranged on the outer side of the inner cover, a circle of pressing plates is arranged on the outer cover, and the pressing plates press the fixing plates.

[0010] Preferably, the outer cover is annular, a middle part is provided with an outer adapting opening, and a part of the track ball extends out of the outer adapting opening.

[0011] Preferably, a plurality of connecting ears are arranged on the base, and a connecting hole is arranged on each connecting ear.

[0012] Compared with the prior art, the lens-free track ball with the optical mouse function can realize accurate positioning of the track ball without a lens assembly, the structure is simplified, the production and assembly difficulty is greatly reduced, the positioning accuracy of the mouse is improved, and the waterproof function of the track ball mouse is more easily realized. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a whole view of the lens-free track ball with the optical mouse function of the utility model;

[0014] Figure 2 is an exploded view of the lens-free track ball with the optical mouse function of the utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and implementation examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0016] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only relative positions on the specified view, not absolute positions.

[0017] In addition, in the utility model, the description such as "first", "second" and the like is only used for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0018] Please refer to Figure 1 and Figure 2 The lens-free track ball with the optical mouse function of the utility model comprises a base 10, the upper side of the base 10 is provided with a ball bowl groove 12, a track ball 20 is placed in the ball bowl groove 12, and the track ball 20 can freely roll in the ball bowl groove 12.

[0019] The lower side or a certain area of the periphery of the base 10 is provided with a PCB board 50, the PCB board 50 is provided with a displacement detection chip 51 and a light emitting device 52, the light emitting device 52 is used for emitting light to the ball bowl groove 12, and the displacement detection chip 51 is used for detecting the rolling track of the track ball 20. The number of the light emitting device 52 is not limited to one, and there can be multiple, one of which is used for the displacement detection chip 51, and the others can be used as decorative lights to make the track ball module itself emit light and present a gem effect.

[0020] The displacement detection chip 51 has many kinds, which can meet the requirements by using the prior art, such as Honeywell magnetism and photoelectricity. These are some sensors called displacement detection, and specific chips such as PAG7676E3, PAJ7620U2 or SS341RT can be used to realize them.

[0021] The surface of the track ball 20 does not need to be set to a specific color as an optical capture point, and the displacement detection chip 51 can also capture the rolling track of the track ball 20 well.

[0022] The ball bowl groove 12 is made of light-transmitting material or non-light-transmitting material, and when the non-light-transmitting material is used, a hole needs to be broken to facilitate the displacement detection chip 51 to capture the rolling track of the track ball 20 better.

[0023] The inner cover 30 is arranged outside the track ball 20, the outer cover 40 is arranged outside the inner cover 30, the outer cover 40 is clamped and fixed with the base 10, and the inner cover 30 and the outer cover 40 are used to prevent the track ball 20 from being taken out of the ball bowl groove 12.

[0024] The inner side wall of the ball bowl groove 12 is provided with a plurality of side grooves 13, a rolling ball 14 is arranged in each side groove 13, the rolling ball 14 is in contact with the track ball 20, and the rolling is more smooth and delicate without jamming.

[0025] The opening of the ball bowl groove 12 is provided with an upwardly protruding circular ring step 11, a plurality of vertical grooves 15 are formed in the outer side of the circular ring step 11, the bottom of the vertical groove 15 is communicated with a horizontal groove 16, the horizontal groove 16 is provided with a limiting cylinder 17, the inner side of the outer cover 40 is provided with a locking block 42, the locking block 42 is provided with a limiting circular groove 43 matched with the limiting cylinder 17, the locking block 42 is embedded in the vertical groove 15, and then is embedded in the horizontal groove 16 by rotating, and the locking is realized when the limiting cylinder 17 is clamped into the limiting circular groove 43.

[0026] The inner cover 30 is annular, an inner adapting opening 31 is formed in the middle part, and a part of the track ball 20 extends out of the inner adapting opening 31.

[0027] The inner cover 30 is provided with a fixed plate 32 on the outer periphery, and the outer cover 40 is provided with a pressing plate 44, which presses the fixed plate 32.

[0028] The outer cover 40 is annular, and an outer adapting opening 41 is formed in the middle part, and a part of the track ball 20 extends from the outer adapting opening 41.

[0029] The inner diameter of the inner adapting opening 31 and the outer adapting opening 41 is smaller than the diameter of the track ball 20, so as to prevent the track ball 20 from being taken out.

[0030] The base 10 is provided with a plurality of connecting ears 18, and a connecting hole 19 is formed in each connecting ear 18, which is used for installing the lens-free track ball with optical mouse function.

[0031] Compared with the prior art, the lens-free track ball with optical mouse function can realize accurate positioning of the track ball without a lens assembly, the structure is simplified, the production and assembly difficulty is greatly reduced, the positioning accuracy of the mouse is improved, and the waterproof function of the track ball mouse is more easily realized.

[0032] The above is only a preferred embodiment of the present application, and does not limit the patent range of the present application, and any modification, equivalent replacement and improvement within the concept of the present application shall be included in the patent protection range of the present application.

Claims

1. A lensless trackball with optical mouse function, characterized in that, The base is provided with a ball bowl groove on the upper side, and a track rolling ball is placed in the ball bowl groove and can freely roll in the ball bowl groove. The lower side or the periphery of the base is provided with a PCB board, and the PCB board is provided with a displacement detection chip and a light emitting device.

2. The lensless trackball with optical mouse function as claimed in claim 1, wherein, The track rolling ball is provided with an inner cover on the outer side, and the inner cover is provided with an outer cover on the outer side.

3. The lensless trackball with optical mouse function as claimed in claim 1, wherein, The inner side wall of the ball bowl groove is provided with a plurality of side grooves, and each side groove is provided with a ball.

4. The lensless trackball with optical mouse function as claimed in claim 2, wherein, The opening of the ball bowl groove is provided with an upwardly protruding circular ring step, the outer side of the circular ring step is provided with a plurality of vertical grooves, the bottom of the vertical groove is communicated with a horizontal groove, the horizontal groove is provided with a limiting cylinder, the inner side of the outer cover is provided with a locking block, the locking block is provided with a limiting circular groove matched with the limiting cylinder, the locking block is embedded in the vertical groove, and the limiting cylinder is clamped into the limiting circular groove to achieve locking by rotating and embedding into the horizontal groove.

5. The lensless trackball with optical mouse function as claimed in claim 2, wherein, The inner cover is annular, and an inner matching opening is formed in the middle part.

6. The lensless trackball with an optical mouse function according to claim 2, wherein, The outer side of the inner cover is provided with a ring of fixing plates, and the outer cover is provided with a ring of pressing plates.

7. The lensless trackball with optical mouse function as claimed in claim 2, wherein, The outer cover is annular, and an outer matching opening is formed in the middle part.

8. The lensless trackball with optical mouse function as claimed in claim 1, wherein, The base is provided with a plurality of connecting ears, and each connecting ear is provided with a connecting hole. The base is provided with a plurality of connecting ears, and each connecting ear is provided with a connecting hole.

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