KR101089232B1 - Slide actuator and personal portable device having the same - Google Patents

Abstract

Disclosed are a slide driving device capable of improving reliability and stability, and a personal portable terminal having the same. The slide drive device moves linearly along the transfer screw in response to the rotation of the transfer screw and the transfer screw, a moving guide connected to the sliding object, a driven cam member provided integrally at one end of the transfer screw, and along the axis direction of the transfer screw. A drive cam member provided to be accessible and spaced apart from the driven cam member to selectively engage and rotate with the driven cam member, a spring member for providing an elastic force to move the drive cam member in a direction approaching the driven cam member, and a drive And a driving motor for rotating the cam member, and when the rotation of the transfer screw is restricted, the drive cam member rotates with respect to the driven cam member.

Description

SLIDE ACTUATOR AND PERSONAL PORTABLE DEVICE HAVING THE SAME}

The present invention relates to a slide driving device and a personal portable terminal having the same, and more particularly, to a slide driving device for providing a driving force required for the slide movement in the personal portable terminal and a personal portable terminal having the same.

Recently, personal portable terminals have been widely used as conveniences that anyone can easily carry and use freely anywhere.

Such personal portable terminals may be generally classified into a bar type personal portable terminal, a flip type personal portable terminal, a folder type personal portable terminal, a slide type personal portable terminal, and the like according to an appearance or a method of operation.

Among these, the slide type personal portable terminal refers to a personal portable terminal in which a slide part disposed to overlap each other with the main body part is slidably opened and closed with respect to the main body part.

On the other hand, in recent years, in order to meet the rapidly changing consumer needs, an automatic slide type personal portable terminal has been proposed in which the sliding opening and closing of the slide portion to the main body portion can be automatically implemented by the driving force of the motor.

By the way, in the conventional automatic slide type personal portable terminal, there is a risk that the motor is damaged due to the overload of the motor during the slide movement of the slide portion, the life of the motor is shortened. That is, conventionally, when the slide unit is slide-moved to a point at which the opening or closing is completed and no further slide movement is performed, when the motor is continuously driven without stopping, the motor is overloaded and the motor is damaged. There is a problem that the stability and reliability is reduced, such as shortening the life.

In addition, even if an expensive motor that can be finely adjusted in the prior art is used, if the motor is driven while the slide movement of the slide portion is completed due to deviation due to repeated use, deviation due to shock, or malfunction, etc., the motor is overloaded. There is a problem.

The present invention provides a slide drive device and a personal portable terminal having the same that can improve the stability and reliability.

In particular, the present invention prevents the overload of the motor providing the driving force required for the slide movement in advance, and the slide drive device and the personal portable terminal having the same that can prevent damage to the motor and degradation of the life due to the overload to provide.

In addition, the present invention can simplify the structure, by minimizing the space required for mounting and operation, the slide drive device and the personal portable terminal having the same to improve the space utilization and design freedom of the terminal equipped with the slide drive device To provide.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, the slide driving device moves linearly along the transfer screw in response to the rotation of the transfer screw, the transfer screw, moving guide connected to the sliding object, transfer A driven cam member provided integrally with one end of the screw, a drive cam member and a drive cam member, which are provided to be accessible and spaced apart along the axial direction of the feed screw and selectively engage and rotate with the driven cam member. And a spring motor for providing an elastic force to move in a direction approaching the driven cam member, and a drive motor for rotating the drive cam member. When the rotation of the feed screw is restricted, the drive cam member rotates with respect to the driven cam member.

The drive cam member may be formed with a drive cam profile having a height difference along the axial direction of the feed screw, and the driven cam member may be formed with a driven cam profile corresponding to the drive cam profile. And the driven cam profile are engaged with each other, the driving cam member and the driven cam member may rotate together. The drive cam profile and the driven cam profile may be changed in shape and structure according to the required conditions and design specifications, the drive cam profile and the driven cam profile is limited or limited by the present invention by the shape and structure It doesn't happen.

The drive shaft of the drive motor penetrates the drive cam member and can support the drive cam member so as to be slidably moved, and one end of the drive shaft passed through the drive cam member is accommodated in a rotatable manner inside the driven cam member and the transfer screw. Can be. In some cases, the driving cam member may be configured to linearly move with respect to the driven cam member along other portions or separate guide members.

As the spring member, a conventional spring may be used according to the required conditions and design specifications, and the present invention is not limited or limited by the structure and characteristics of the spring. For example, the spring member may be interposed between the driving motor and the driving cam member, and the driving motor may be provided with a hemispherical first spring support part to be provided between the driving motor and the driving cam member, and the driving cam member. The hemispherical second spring support may be formed, and the spring member may be interposed between the first and second spring support.

According to another preferred embodiment of the present invention, the personal handheld terminal is adapted to rotate the transfer screw and the transfer screw provided on any one of the first body, the second body that slides relative to the first body, and the first and second bodies. Correspondingly, the linear guide moves along the transfer screw, moving guide connected to the other of the first and second bodies, a driven cam member integrally provided at one end of the transfer screw, and the driven cam member is approached along the axis direction of the transfer screw. And a driving cam member spaced apart from each other and selectively engaged with the driven cam member to rotate, a spring member providing an elastic force to move in a direction approaching the driven cam member, and rotating the driving cam member. And a drive motor, wherein the drive cam member is rotated relative to the driven cam member when the slide movement of the second body relative to the first body is constrained.

For reference, in the present invention, the first body and the second body may be understood as a main body part and a housing (or case) of the main body and the sliding part which are slidably coupled to each other in a conventional slide type personal portable terminal. It can be understood as a variety of sliding elements (eg, various plates, frames and guide bars, etc.) that are manufactured and coupled separately from the main body portion and the slide portion to implement sliding of the slide portion. In some cases, the slide drive device according to the present invention may be applied to a tiltable slide-type personal portable terminal in which the slide part is slid open in the width direction of the main body part and then tilts at a predetermined angle with respect to the main body part. It can be applied to provide the driving force necessary for the slide movement of another slide object.

In the present invention, a personal portable device (Personal Portable Device) is a portable electric and electronic device such as a PDA (Personal Digital Assistant), smart phone (Smart phone), handheld PC, mobile phone, MP3 player, etc., CDMA (Code A predetermined communication module such as a Division Multiplexing Access module, a Bluetooth module, an infrared communication module (IrDA), a wired / wireless LAN card, etc., and a terminal having a predetermined computing power by mounting a predetermined microprocessor for performing a multimedia playback function Can be used as a generic concept.

According to the slide drive device and the personal portable terminal having the same according to the present invention, it is possible to improve the driving stability and reliability.

In particular, according to the present invention, when the drive motor is driven abnormally, by allowing the drive cam member to rotate relative to the driven cam member, it is possible to prevent the motor from being overloaded, and damage to the motor due to the overload And life degradation can be prevented. In other words, the drive cam member for transmitting the driving force of the drive motor to the transfer screw when the drive motor is driven by various deviations or malfunctions in the state that the slide movement of the slide object is completed and no further slide movement is made; Engagement between the driven cam members is released and the drive cam member can be rotated with respect to the driven cam member in an idling manner, thereby preventing overload of the drive motor.

In addition, according to the present invention, it is possible to accurately slide the slide object to the required position without using the expensive drive motor without overloading the drive motor.

In addition, according to the present invention, since the driving force of the driving motor can be selectively transmitted or cut off by the transfer screw using a drive cam member and a driven cam member having a relatively simple structure, the structure can be simplified and the slide drive device is mounted. And the space required for operation can be minimized. Therefore, the space utilization and design freedom of the terminal of the terminal on which the slide hinge device is mounted can be improved, and it can contribute to the miniaturization.

1 is a perspective view illustrating a personal portable terminal to which a slide driving device according to the present invention is applied.
2 and 3 are perspective views showing the structure of a slide drive device according to the present invention.
Figure 4 is a side view showing the structure of a slide driving apparatus according to the present invention.
5 and 6 are views for explaining the operation structure of the slide drive device according to the present invention.
7 is a perspective view illustrating a personal portable terminal to which a slide driving device according to another embodiment of the present invention is applied.
8 to 10 are perspective views showing the structure of a slide driving apparatus according to another embodiment of the present invention.
11 and 12 are views for explaining the operation structure of the slide drive device according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

1 is a perspective view showing a personal portable terminal with a slide driving device according to the present invention, Figures 2 and 3 are a perspective view showing the structure of a slide driving device according to the present invention, Figure 4 is a slide according to the present invention It is a side view which shows the structure of a drive apparatus.

As shown in Figures 1 to 4, the slide drive device according to the present invention is a feed screw 350, moving guide 360, driven cam member 340, drive cam member 330, spring member 320 And a drive motor 310.

Hereinafter, the slide drive device 300 according to the present invention is configured to provide a driving force required for opening and closing the slide in the slide-type personal portable terminal including a first body and a second body that is slidably coupled to the first body. It will be described with an example.

For reference, in the present invention, the first body and the second body may be understood as a main body part and a housing (or case) of the main body and the sliding part which are slidably coupled to each other in a conventional slide type personal portable terminal. It can be understood as a variety of sliding elements (eg, various plates, frames and guide bars, etc.) that are manufactured and coupled separately from the main body portion and the slide portion to implement sliding of the slide portion.

In the embodiment of the present invention, the slide driving device 300 is applied to the slide type personal portable terminal configured to simply slide the slide unit with respect to the main body, for example, but in some cases the slide unit sliding along the width direction of the main body portion After opening, the slide drive device according to the present invention may be applied to a tiltable slide-type personal portable terminal tilting a predetermined angle roll with respect to the main body portion, and to provide a driving force necessary for the slide movement of other slide objects. Can be applied.

For example, the main body unit 100 may be configured to include a front case (not shown) and a rear case (not shown) to form a predetermined receiving space therein in cooperation with each other, various information on the front of the front case Keypad and various key buttons for inputting may be provided. For example, a QWERTY keypad having a QWERTY arrangement, which is an English standard keyboard, may be applied to the front surface of the main body 100, and a game keypad for inputting a signal related to a conventional keypad or game having a numeric arrangement may be applied. Keypads, touch pads, etc. may be appropriately arranged. In addition, a printed circuit board for various types of control may be accommodated in the main body 100.

The slide unit 200 may be configured to include a front case (not shown) and a rear case (not shown) to form a predetermined receiving space therein mutually cooperative, the image information on the front of the slide unit 200 And a display unit for outputting the same.

Sliding connection structure of the body portion 100 and the slide portion 200 can be changed in various ways depending on the required conditions and design specifications. For example, the guide frame coupled to the front of the body portion may be configured to partially receive both side ends of the rear plate coupled to the rear of the slide portion and to slide along the side ends of the rear plate. In some cases, the slide unit may be configured to slide with respect to the main body through other plates and guide bars instead of the guide frame. Alternatively, the main body may be configured to be slidably connected to the slide unit directly.

The transfer screw 350 is formed to have a predetermined length and diameter may be provided to the body portion 100. As the transfer screw 350, a conventional screw having a predetermined thread line may be used along an outer circumferential surface thereof, and the present invention is not limited or limited by the type and characteristics of the transfer screw 350.

The moving guide 360 is provided to linearly reciprocate along the transfer screw 350 in response to the rotation of the transfer screw 350, and the rotational movement of the transfer screw 350 is a linear movement by the moving guide 360. Can be converted. In addition, the moving guide 360 is connected to the slide unit 200, the slide unit 200 relative to the body portion 100 by a linear movement section of the moving guide 360 corresponding to the rotation of the transfer screw 350. ) Can slide. Hereinafter, an example in which the moving guide 360 and the slide unit 200 are connected by the connection guide 370 coupled to the moving guide 360 will be described.

As the moving guide 360, a general moving guide 360 capable of linear reciprocating movement along the transfer screw 350 may be used. For example, as the moving guide 360, a moving guide 360 formed on an inner circumferential surface of a thread corresponding to a screw of the transfer screw 350 may be used, and the moving guide 360 may be a rotation direction of the transfer screw 350. In response to the linear screw can be linearly reciprocated along the 350. In some cases, a structure in which a ball is inserted between the thread of the transfer screw and the thread of the moving guide may be applied in a conventional ball screw manner.

The driven cam member 340 is provided integrally with one end of the transfer screw 350 is configured to rotate integrally with the transfer screw 350. The driven cam member 340 may be integrally processed at one end of the transfer screw 350, and in some cases, the transfer screw and the driven cam member may be separately manufactured and then combined.

The driving cam member 330 is provided to be approached and spaced apart from the driven cam member 340 along the axial direction of the transfer screw 350, and may be selectively engaged with the driven cam member 340 to rotate. It is configured to be.

That is, the drive cam member 330 is provided to move linearly to approach and space the driven cam member 340 along the axial direction of the transfer screw 350, the drive cam member facing the driven cam member 340 On one surface of the 330, a driving cam profile 332 is formed. For example, the driving cam profile 332 may be configured by alternately arranging the valley portion 332b and the peak portion 332a having a height difference along the axial direction of the transfer screw 350.

The driven cam member 340 is provided to be engaged with the drive cam member 330, for this purpose, the drive cam profile 332 on one surface of the driven cam member 340 facing the drive cam member 330 A follower cam profile 342 corresponding to) is formed.

The driving cam profile 332 and the driven cam profile 342 may be changed in shape and structure according to the required conditions and design specifications, the driving cam profile 332 and the driven cam profile 342 The present invention is not limited or limited by the shape and structure.

As such, when the driving cam member 330 moves in a direction approaching the driven cam member 340, the driven cam member 340 and the driving cam member 330 may be in close contact with each other and thus engaged. The driven cam member 340 and the transfer screw 350 may be integrally rotated by the rotation of the drive cam member 330. On the contrary, when the driving cam member 330 moves in a direction spaced apart from the driven cam member 340, the driving cam member 330 is spaced apart from the driven cam member 340, and the engagement may be released. Accordingly, even if the drive cam member 330 rotates, the rotational force of the drive cam member 330 is not transmitted to the driven cam member 340.

The drive cam member 330 and the driven cam member 340 may be formed of a conventional plastic material, but excellent in mechanical, thermal, and chemical properties even in a long-term wide range of use temperature, and the use of a material having excellent dimensional stability Since it is required, it is preferable to be formed using a lubricity material having excellent self-lubricating properties and excellent fatigue resistance such as polyacetal (polyoxymethylene), polyamide (polyamide) and polyamide imide (polyamide imide).

The drive motor 310 is provided to rotate the drive cam member 330. That is, the drive cam member 330 is connected to the drive shaft 312 of the drive motor 310 is configured to rotate by the driving force on the drive motor 310. As the driving motor 310, a conventional motor capable of providing a driving force may be used, and the present invention is not limited or limited by the type and characteristics of the motor. In addition, the drive motor 310 may be coupled to the body portion 100 through a conventional bracket, the present invention is not limited or limited by the arrangement and mounting structure of the drive motor 310.

On the other hand, the drive shaft 312 of the drive motor 310 may pass through the drive cam member 330 and support the drive cam member 330 to be slidably movable. That is, the driving cam member 330 may be rotated together with the driving shaft 312, and may selectively move along the driving shaft 312 and approach and spaced apart from the driven cam member 340. In addition, the driving cam member 330, the driven cam member 340 and the transfer screw 350 of the drive shaft 312 passed through the drive cam member 330 to be maintained more stably One end may be accommodated relative to the inside of the driven cam member 340 and the transfer screw 350.

In the exemplary embodiment of the present invention, the driving cam member 330 is described as an example in which the driving cam member 330 is slidably moved along the driving shaft 312 of the driving motor 310. Or it may be configured to move linearly with respect to the driven cam member along a separate guide member.

In addition, the other end of the above-described transfer screw 350 may be rotatably supported by the support member 380 provided on the main body 100. In addition, the driven cam member 340, the transfer screw 350 and the support member 380 may be coupled to the body portion 100 by a conventional fixing member 390. Hereinafter, grooves are formed in the driven cam member 340 and the support member 380, respectively, and the driven cam member 340 and the support member 380 by fixing members 392 and 394 in a substantially “U” shape coupled to the groove. ) Will be described with an example configured to be fixed to the main body 100.

The spring member 320 is provided to provide an elastic force to move the driving cam member 330 in the direction approaching the driven cam member 340. As the spring member 320, a conventional spring may be used according to required conditions and design specifications, and the present invention is not limited or limited by the structure and characteristics of the spring. For example, one coil spring may be used as the spring member 320. In some cases, a plurality of coil springs having different winding diameters may be used together.

For example, the spring member 320 may be interposed between the driving motor 310 and the driving cam member 330. In addition, a hemispherical first spring support part may be formed on the driving motor 310 so as to be provided between the driving motor 310 and the driving cam member 330, and the driving cam member 330 may have a hemispherical first shape. The two spring support part may be formed, and the spring member 320 may be interposed between the first and second spring support parts. As such, since the spring member 320 may be supported at both ends by the hemispherical first and second spring support parts, the spring member 320 may be compressed and restored between the driving motor 310. The arrangement state of the member 320 can be stably maintained without flow.

Hereinafter will be described the operation structure of the slide drive device according to the present invention.

5 and 6 are views for explaining the operation structure of the slide drive device according to the present invention. In addition, the same or equivalent portions as those in the above-described configuration are denoted by the same or equivalent reference numerals, and a detailed description thereof will be omitted.

In the initial state of the slide unit 200, the moving guide 360 is disposed adjacent to one end of the transfer screw 350. At this time, the driving cam member 330 is elastically supported by the spring member 320 and may be in close contact with the driven cam member 340 to be engaged.

When a driving voltage is applied to the driving motor 310, as shown in FIG. 5, the driving cam member 330 is rotated in a specific direction by the driving motor 310, whereby the driven cam meshed with the driving cam member 330. The member 340 rotates together and rotates the transfer screw 350. As the conveying screw 350 rotates, the moving guide 360 moves linearly along the conveying screw 350. As a result, the slide 200 connected to the moving guide 360 slides with respect to the main body 100. Will move.

Thereafter, when the slide movement of the slide unit 200 is completed as shown in FIG. 6 and no further slide movement is made, even if the rotation of the driven cam member 340 is restricted, the driving cam member with respect to the driven cam member 340. 330 can rotate. That is, the rotation of the feed screw 350 and the driven cam member 340 connected to the slide unit 200 and the moving guide 360 is constrained as the slide unit 200 is restrained from moving further. When the driving motor 310 is driven while the rotation of the feed screw 350 and the driven cam member 340 is constrained, the driving cam member 330 rotates and simultaneously compresses the spring member 320 and the driven cam member. 340 may be spaced apart. As a result, since the driving cam member 330 can rotate in an idling manner even when the rotation of the driven cam member 340 is restricted, the overload of the driving motor 310 can be prevented.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

100: main body 200: slide
300: slide drive device 310: drive motor
320: spring member 330: drive cam member
340: driven cam member 350: transfer screw
360: Moving guide 370: Connection guide
380: support member 390: fixed member

Claims (9)

Transfer screw;
A moving guide linearly moving along the transfer screw corresponding to the rotation of the transfer screw and connected to the sliding object;
A driven cam member integrally provided at one end of the transfer screw;
A drive cam member provided to be accessible and spaced apart from the driven cam member along an axial direction of the transfer screw to selectively engage and rotate with the driven cam member;
A spring member providing an elastic force to move the driving cam member in a direction approaching the driven cam member; And
And a drive motor for rotating the drive cam member.
And when the rotation of the transfer screw is restricted, the drive cam member rotates with respect to the driven cam member. The method of claim 1,
The drive cam member is formed with a drive cam profile having alternately arranged valleys and hills having a height difference along the axis direction of the transfer screw,
The driven cam member is formed with a driven cam profile corresponding to the drive cam profile along the axial direction,
And the driving cam profile and the driven cam profile rotate together when the driving cam profile and the driven cam profile are engaged with each other. The method of claim 1,
The drive cam member is supported by the drive shaft of the drive motor so as to slide in the axial direction,
One end of the drive shaft passing through the drive cam member is a slide drive device, characterized in that accommodated rotatably inside the driven cam member and the transfer screw. The method of claim 1,
Further comprising a hemispherical first spring support portion formed in the drive motor to be provided between the drive motor and the drive cam member, and a hemispherical second spring support portion formed in the drive cam member,
And the spring member is interposed between the first and second spring support portions. The method of claim 1,
And a support member rotatably supporting the other end of the transfer screw. First body;
A second body that slides relative to the first body;
A transfer screw provided in any one of the first and second bodies;
A moving guide linearly moving along the transfer screw in response to the rotation of the transfer screw and connected to the other of the first and second bodies;
A driven cam member integrally provided at one end of the transfer screw;
A drive cam member provided to be accessible and spaced apart from the driven cam member along an axial direction of the transfer screw to selectively engage and rotate with the driven cam member;
A spring member providing an elastic force to move the driving cam member in a direction approaching the driven cam member; And
And a drive motor for rotating the drive cam member.
When the slide movement of the second body relative to the first body is restrained, the driving cam member is rotated relative to the driven cam member. The method of claim 6,
The drive cam member is formed with a drive cam profile having alternately arranged valleys and hills having a height difference along the axis direction of the transfer screw,
The driven cam member is formed with a driven cam profile corresponding to the drive cam profile along the axial direction,
And the driving cam profile and the driven cam profile are rotated together when the driving cam profile and the driven cam profile are engaged with each other. The method of claim 6,
The drive cam member is supported by the drive shaft of the drive motor so as to slide in the axial direction,
One end of the drive shaft passed through the drive cam member is characterized in that the portable cam member and the inside of the transfer screw are accommodated rotatably. The method of claim 6,
And a support member rotatably supporting the other end of the transfer screw.

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