Trackball module structure

Abstract

The invention relates to a trackball module structure, which is applied to an electronic device and comprises a pedestal, a soft flat cable group, a trackball device and a cover body. The pedestal is provided with a groove. The soft flat cable group is provided with a bearing part and a connection part which are connected, wherein the bearing part is provided with a control chip group and is fixed to the groove of the pedestal by the bearing part; and the connection part extends out of the groove and is electrically connected with the electronic device. The trackball device is arranged in thegroove of the pedestal corresponding to the control chip group. The cover body is arranged on the groove of the pedestal and fixes the trackball device on the pedestal. Because the trackball is integrated into module which is conveniently arranged on the electronic device, the trackball module structure solves the known problem of the positioning of the known trackball and can prevent the electrostatic discharge as well by matching with the pedestal and the cover body which are made of metals.

Description

technical field [0001] The invention relates to a trackball module structure, in particular to a trackball module structure which integrates a trackball device and a control chipset into a single module. Background technique [0002] Generally speaking, a trackball is installed on an electronic device to provide pointer operations, especially for portable electronic devices such as personal digital assistants, which can provide users with convenient operability through the trackball. see figure 1 As shown, it is a schematic diagram of a known trackball. Its main technology is to cover the rolling ball 71 and four magnetic rollers 73 with a casing 72 to form a trackball device 70, and then jointly install it on the electronic device. On the main board 75 , there are four Hall ICs (Hall IC) 74 corresponding to the magnetic rollers 73 on the main board 75 . [0003] Therefore, when the user operates by rolling the ball 71, the magnetic roller 73 will rotate along with the mov...

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Problems solved by technology

[0004] However, the known trackball device 70 must be fixed on the housing of the electronic device (not shown) in order to facilitate the user's operation, while the Hall IC (Hall IC) 74 is welded on the main board 75, so that the track ball Manufacturing and assembling tolerances will be generated between the ball device 70 and the casing, the casing and the mainboard 75, and the mainboard 75 and the Hall IC (Hall IC) 74. Therefore, cumulatively, the magnetic roller 73 and the Hall IC The tolerance between IC (Hall IC) 74 is quite large, and it is difficult to control, which not only affects the accuracy of the trackball, but in severe cases, it may even cause poor induction, which affects the user's operation

[0005] It is known to use a reed switch (Reed Switch) to replace the Hall IC to save cost and improve reliability. However, because the assembly method of the reed switch and the trackball device has not changed, there will still be such The problem of cumulative tolerance is known. Once the induction is bad, even if the cost is reduced, the reliability cannot be improved.

[0006] This shows that the above-mentioned existing trackball device obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

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