CN204166499U - Improvement type capacitive touch pen - Google Patents

Abstract

An improved capacitive stylus, which can cooperate with a handheld device and be inserted into it. The improved capacitive stylus has a pen holder, a conductive pen head and an electrical connection unit; wherein, the conductive pen head is connected to one end of the pen holder, and the pen holder is a Made of conductive material, the electrical connection unit connects the conductive pen tip to the handle on the outer surface of the pen barrel, or connects the conductive pen tip to the circuit board of the handheld device; since the pen barrel of the stylus is made of non-conductive material, and the electrical connection unit It is only partially provided on the outer surface of the pen barrel or inside the pen barrel, thus greatly reducing the scope of the conductive material used by the stylus, so that when the stylus is inserted into the handheld device, it can reduce its interference to the antenna.

Description

Improved capacitive stylus

technical field

The utility model relates to a stylus, in particular to a capacitive stylus, which can be inserted into a hand-held device and has low influence on the antenna efficiency of the hand-held device.

Background technique

With the development of technology, more and more handheld devices, such as mobile phones, are equipped with touch screens and stylus pens. In order to facilitate the user to take and store the stylus, and to prevent the stylus from being lost, the stylus and the body of the handheld device are often combined into one when developing and designing the handheld device.

However, as the capacitive touch screen has become the mainstream in the market in recent years, and the body of the handheld device is becoming thinner and lighter, when the stylus is inserted into the body, in order to make the space of the body For optimization, it is often unavoidable to insert the stylus on the side of the handheld device near the antenna of the handheld device. The design requirements of capacitive touch screens for stylus, especially for passive stylus, the tip and barrel of the stylus must be made of conductive materials, so that the ground can be formed through the contact between the human body and the pen barrel Cycle and generate capacitive effect to achieve touch effect. But in this way, when the stylus is combined with the body of the handheld device, the stylus made of conductive material is likely to interfere with the antenna around it and reduce the antenna performance, thereby increasing the number of points in the body of the handheld device. Design difficulty of design and space utilization.

Utility model content

In view of this, the main purpose of the present invention is to provide a capacitive stylus that can be inserted into a handheld device and has less impact on the antenna efficiency of the handheld device.

Another object of the present invention is to provide a capacitive stylus, which is not easy to lose during use.

In order to achieve the above purpose, the utility model provides an improved capacitive stylus, which is used to cooperate with a handheld device. The stylus includes a pen holder, a conductive pen tip and an electrical connection unit, wherein the conductive pen tip is connected to one end of the pen holder. The pen holder is made of non-conductive material, the electrical connection unit is electrically connected to the conductive pen head, and the electrical connection unit is also electrically connected to the grip portion on the outer surface of the pen holder or the circuit board of the handheld device.

Since the pen holder of the stylus is made of non-conductive material, and the electrical connection unit is only partially arranged on the outer surface of the pen holder or inside the pen holder, the improved design of the above-mentioned stylus greatly reduces the need for the stylus. The range of conductive materials is used, so that when the stylus is inserted into the handheld device, the interference of the stylus to its surrounding antenna can be greatly reduced.

Preferably, the electrical connection unit can be a wire, and at least a part of the wire is arranged in the pen holder, and the end of the wire away from the conductive tip is grounded through the circuit board of the handheld device, so that the stylus can be prevented from being lost during use.

Preferably, the electrical connection unit can be a long metal strip, and the long metal strip extends along the longitudinal direction of the pen holder. In this way, the stylus can be grounded through the human body when using the stylus, and the stylus can realize a lightweight and compact design for convenience in use.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a stylus and a handheld device according to a first embodiment of the present invention.

FIG. 2 is a graph showing the relationship between antenna efficiency and frequency at low frequencies of the hand-held device inserted with the stylus of the first embodiment of the present invention.

FIG. 3 is a diagram showing the relationship between antenna efficiency and frequency at high frequencies of the hand-held device inserted with the stylus according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a stylus according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a stylus according to a third embodiment of the present invention.

(Symbol Description)

1 Handheld device

2 circuit board

3 antenna groups

4 slots

5 fuselage

6 Stylus

61 pen holder

611 Groove

62 conductive pen tip

63 Electrical connection unit

63a wire

63b metal layer

63c wire

63d metal strip

631 Ground terminal

64 Grip

Detailed ways

In order to better understand the features of the utility model, the utility model provides three embodiments, which are described as follows in conjunction with the accompanying drawings, please refer to FIG. 1 to FIG. 5 . For the convenience of description, in the following embodiments, the handheld device 1 is taken as an example of a mobile phone, and the same or similar components in each embodiment use the same part numbers. The main components of the improved capacitive stylus 6 of the present invention include a pen holder 61 , a conductive tip 62 and an electrical connection unit 63 . The structures of the components and the relationship among them are described in detail as follows.

Please refer to Figure 1 first. The interior of the handheld device 1 is provided with a circuit board 2 , an antenna group 3 and a slot 4 , and a capacitive touch screen (not shown) is provided on the surface of the handheld device 1 . Wherein, the slot 4 is adjacent to one side of the antenna group 3 and is used for inserting and fixing the stylus 6 .

The barrel 61 of the stylus 6 is a hollow cylinder, which is made of non-conductive materials such as plastic, and one end of the stylus 6 is connected to a conductive tip 62 . The above-mentioned conductive pen head 62 is made of conductive rubber, which is used to contact the touch screen.

In this embodiment, the electrical connection unit 63 is a wire 63 a , at least a part of the wire 63 a is disposed in the pen holder 61 and is electrically connected to the conductive pen head 62 . The other end of the wire 63a that is relatively far away from the conductive tip 62 is fixed on the body 5 of the handheld device 1, and the wire 63a is provided with a grounding terminal 631, and the grounding terminal 631 is electrically connected to the circuit board 2, so that the wire 63a can pass through the circuit board. 2 ground.

In use, when the user intends to store the stylus 6 into the slot 4 of the handheld device 1, since the pen holder 61 is made of non-conductive material, and the stylus 6 only has the wire 63a and the conductive tip 62 is made of conductive material. As a result, the stylus 6 greatly reduces the range of conductive materials that need to be used. Therefore, when the stylus 6 is inserted into the slot 4, even if the slot 4 is adjacent to the antenna group 3 in position, the stylus 6 will not affect the antenna. The influence of group 3 is also quite limited, and the stylus 6 is fixed on the body 5 through the wire 63a to prevent the stylus 6 from being lost.

This embodiment is actually tested, and the results are shown in FIG. 2 to FIG. 3 . It can be seen from FIG. 2 and FIG. 3 that when the traditional metal stylus 6 is inserted into the slot 4, the antenna efficiency of the antenna group 3 is greatly reduced no matter in the low frequency band or the high frequency band; In contrast, for the stylus 6 of the first embodiment of the present utility model, the antenna efficiency is only slightly reduced, so it can be seen that the stylus 6 of the present utility model does have little influence on the antenna efficiency of the handheld device 1, and The function of normal use of the stylus 6 and the function of preventing loss can be taken into account at the same time.

Based on the same design concept, the utility model also provides a second embodiment, please refer to FIG. 4 . Compared with the above-mentioned first embodiment, the penholder 61 of this embodiment is hollow cylindrical,

The electrical connection unit 63 is formed by connecting the metal layer 63b and the wire 63c. Wherein, the metal layer 63b is roughly oval, and it is arranged on the grip portion 64 on the outer surface of the pen holder 61 without directly connecting the conductive tip 62, so that the user can easily touch the metal layer 63b with his hands when holding the stylus 6, Furthermore, the stylus 6 can be grounded through the human body to achieve a touch effect. The wire 63c is disposed inside the pen holder 61 and electrically connects the conductive pen tip 62 and the metal layer 63b. In this way, the stylus 6 can be designed to be lighter and more portable, and also can reduce the impact on the antenna group 3 of the handheld device 1 when inserted into the slot 4 .

The utility model also provides a third embodiment, please refer to FIG. 5 . The pen holder 61 of the third embodiment is also in the shape of a hollow cylinder, which extends concavely from the outer surface along the longitudinal direction of the pen holder 61 to form an elongated groove 611 . In this embodiment, the electrical connection unit 63 is a long metal strip 63d, which is embedded in the groove 611 and passes through the grip portion 64 on the outer surface of the pen holder 61 and is electrically connected to the conductive pen tip 62, allowing the user to hold and touch When using the pen 6, the hand can touch the metal bar 63d located on the outer surface of the pen holder 61.

It must be noted that when the metal strip 63d is embedded in the groove 611, it can slightly protrude from the outer surface of the pen holder 61, so that the user can more easily touch the metal strip 63d. In addition, although the penholder 61 of the present utility model is all hollow, if the penholder 61 is made into a solid shape, and for example, at least a part of the lead wire 63a of the first embodiment is buried in the penholder 61, it can still be realized like this. The utility model has the same effect. In addition, the electrical connection structure of the present invention can also be a metal wire (not shown in the figure), so that the metal wire is attached to the outer surface of the pen holder 61 along the longitudinal direction of the pen holder 61, so that the effect of the present invention can also be realized. .

Finally, it must be explained again that the components disclosed in the above embodiments of the utility model are only for illustration and are not intended to limit the scope of the utility model. Any other easily conceivable structural changes or substitutions of other equivalent components Changes should also be covered by the claims of the present utility model.

Claims (7)

1. an Improvement type capacitive touch pen, for coordinating hand-held device, described pointer includes penholder and the conductive pen point being connected described penholder, and the feature of described Improvement type capacitive touch pen is:

Described penholder is that non-conductive material is made,

Described pointer also includes the electric connection unit being electrically connected described conductive pen point, and described electric connection unit is also electrically connected the grip part of described penholder outside surface or the circuit board of described hand-held device.

2. Improvement type capacitive touch pen as claimed in claim 1, is characterized in that:

Described penholder is hollow cylindrical,

Described electric connection unit is wire,

Described wire has at least a part to be located in described penholder, and one end of described wire is electrically connected described circuit board.

3. Improvement type capacitive touch pen as claimed in claim 1, is characterized in that:

Described electric connection unit is formed by connecting by metal level and wire, and described metal level is located at described grip part, and described wire connects described conductive pen point and described metal level.

4. Improvement type capacitive touch pen as claimed in claim 3, is characterized in that:

Described penholder is hollow cylindrical, and described wire is located in described penholder.

5. Improvement type capacitive touch pen as claimed in claim 1, is characterized in that:

Described electric connection unit is metal wire, and described metal wire is along the longitudinal direction of described penholder and the outside surface amplexiformed in described penholder.

6. Improvement type capacitive touch pen as claimed in claim 5, is characterized in that:

Described electric connection unit is metal strip, the outside surface concave shaped growth strip groove of described penholder, and described metal strip is located at described groove.

7. Improvement type capacitive touch pen as claimed in claim 6, is characterized in that:

Described groove is extending longitudinally along described penholder.