DE102008005174A1 - Mobile communication device and method for its manufacture - Google Patents

Abstract

The invention relates to a mobile communication device (1) with two housing parts (2, 3) which are mounted longitudinally displaceable relative to one another via a linear bearing means (5), the linear bearing means (5) having two linear rolling bearings (7) arranged in a guide carriage (12) Wälzkörperrückführung (14) and at least one guide rail (6) having a central leg (8) and two thereof vertically projecting side legs (9) with trained on their inner sides Wälzkörperlaufbahnen (10), in the rolling elements (11) of the linear roller bearing (7) engage and wherein the two linear roller bearings (7) on a housing part (2) and the Führunsschiene (6) on the other housing part (3) are arranged. In order to simplify the linear rolling bearing means of the mobile communication device, it is provided that the guide carriage (12) comprises a support body (13) connectable to a housing part (2; 3) and a ball return housing (14) connected to the support body (13) the ball return housing (14) consists of two identical, mutually complementary housing halves (15), wherein the support body (13) is U-shaped in profile and has side legs (19), which on their outer sides Wälzkörperlaufbahnen (20) for the rolling elements (11 ) and which rest on the ball 21) of the same, and wherein the ball return housing (14) has two mirror-image arranged ball return paths (30), each having a ...

Description

Field of the invention

The The invention relates to a mobile communication device with two housing parts, which via a linear bearing means are mounted longitudinally displaceable relative to each other, wherein the linear bearing means two arranged in a carriage Linear roller bearing with rolling element feedback and at least one guide rail with a middle Thighs and two vertically protruding side legs and with formed on their inner sides rolling element raceways, intervene in the rolling elements of the linear bearing, and wherein the two linear bearings on a Housing part and the guide rail on the other Housing part are arranged.

Background of the invention

mobile Communication devices, in particular mobile telephones, PDAs (Personal Digital Assistant) and mobile radios often the possibility of housing parts relative to each other to move, for example to release or cover a keyboard. In different Embodiments can be a longitudinally displaceable Housing part will be a pure cover, which the keyboard in covering a closed position, wherein this housing part usually another telephone microphone and possibly other electronic Components are arranged. It is also known, on a housing section to arrange a display and this housing part as far as extend that in the closed position the arranged below the display on the other housing part Keyboard covered. From the small-size closed position can then the upper housing part including display linearly shifted which exposes the keyboard.

For the realization of the described longitudinal displacement corresponding bearing means are provided, including in the unpublished patent application of the Applicant DE 10 2007 004 780.2 is proposed to design the bearing means as a linear bearing means with two linear bearings with recirculating ball according to the preamble of claim 1. Another solution in which a simpler constructed linear roller bearing is proposed as a bearing means, is from the DE 20 2006 011 673 U1 known.

The problem with such linear bearings of mobile communication devices are the small installation space available for all components. It is regularly available for the recirculating ball only a space of 4 × 8 mm, so that it is difficult to impossible to use linear bearings with cages or similar solutions, as for example from the DE 196 14 513 A1 are known.

Object of the invention

Of the Invention is based on the object, a generic mobile communication device to create its linear bearing means simple and reliable. Another task consists in the indication of a cost-effective procedure for producing such a mobile communication device.

Summary of the invention

Of the Invention is based on the finding that the task solvable in a surprisingly simple manner is that a carriage of the linear bearing means as three-part recirculating ball with two recirculating ball roller bearings built is, wherein one with a housing part of the mobile communication device connectable support element a two-piece rolling bearing return partially encompasses and Wälzkörperaußenlaufbahnen has, in which deflections of the ball circulation open.

The Invention is according to the features of the main claim from a mobile communication device with two housing parts, the longitudinally displaceable relative to one another via a linear bearing means are stored, wherein the linear bearing means two in a carriage arranged linear roller bearings with Wälzkörperrückführung and at least one guide rail with a middle leg and two of them vertically protruding side legs with at their Inner side trained rolling element raceways, in the rolling elements of the linear roller bearing engage, and wherein the two linear bearings on a housing part and the guide rail on other housing part are arranged. It is also planned that the carriage from a with a housing part connectable support body and one with the support body connected ball return housing consists, wherein the ball return housing of two identical, consists of mutually complementary housing halves, wherein the support body formed in profile U-shaped is and has side legs, which on their outsides Have rolling element raceways for the rolling elements and which on the ball return housing in the area abut from narrow sides of the ball return housing, and wherein the ball return housing two mirror images arranged ball return paths, each with a deflection having, which in each case in a Wälzkörperlaufbahn of the support body opens.

By this construction is advantageously achieved that a simple but very stable structure of the Rolling bearing means is created, which manages with an available small space. The components are designed as simple plug-in or latching parts, so that the production and installation is very simple. The formation of the ball return housing as a two-part housing with communicating, identical housing parts facilitates manufacturing, in particular with regard to the filling of the rolling elements designed as bearing balls. The fact that the ball return is in two parts and middle divided, there are a number of other advantages, in particular with regard to the assembly, but also in relation to a parts exchange in case of wear.

According to one Further development of the invention can be provided that the complementary housing halves the ball return housing in its longitudinal extent Seen in each case double T-shaped.

In Other practical developments may be provided that the Support body on the ball return housing is attached, with the side legs of the support body on the narrow sides of the ball return housing abutment, and wherein broad side forming T-angle of the ball return housing Encompass end faces of the support body.

A Another embodiment of the invention provides that the housing halves of the ball return housing two mirror images arranged ball return paths, each having a inner section with straight course and two outer, have curved deflections, wherein the deflections each in a rolling body of the support body open out.

As well It is within the scope of the invention to provide that each housing half of the ball return housing in each case in the area of middle ball track section has a Füllnut whose width less than or equal to the diameter of the rolling elements is. This embodiment can be supplemented by that the filling grooves in the top of a housing half are conically flared.

In a particularly practical development of the invention is provided that the housing halves of the ball return housing each have a bore and a pin at their ends, by which the housing halves connectable to each other are.

alternative or cumulatively, it can be provided that the housing halves of the ball return housing respectively along the Central axis have a groove and a vertical raised bar, each with a corresponding groove and bar of the other Case half correspond.

It is also within the scope of the invention to provide that at least the ball return housing made of a polymeric or metallic material.

Especially Also advantageous is an embodiment of the invention, which is characterized in that the supporting body with overflowing Ledge is provided, which in overloading in the pressure direction Attach the end faces of the guide rail, and that the Side legs of the supporting body at their ends feet which, when overloaded in the printing direction on Place the middle leg of the guide rail.

Other practical embodiments of the invention are characterized by that the supporting body has a length of 10 mm and a Width of 6.26 mm, and that the ball screw housing has a width of 3.45 mm and a height of 1.7 mm, and that the rolling elements each have a diameter of 0.79 mm.

The Task for providing a method for producing a Mobile communication device with the features of the main claim is solved by the fact that the two housing halves the ball return housing connected to each other be, and then the rolling elements by machine through the filling grooves in the ball return housing be filled.

The Filling a ball with trained as bearing balls Rolling elements has so far caused difficulties which in particular due to the small size of Ball return and the bearing balls with diameters of is less than 1 mm. Filling via a filling groove now allows a machine filling the simplest Way to while so far filling only had to be done manually.

The Finally, this process can be improved complement or modify by providing that the two housing halves of the ball return housing be connected to each other, then that of the supporting body is connected to the ball return housing and that finally the rolling elements by machine through the filling grooves, the lower half of the housing filled in the ball return housing become.

Brief description of the drawings

The Invention will become more apparent in the following with reference to the accompanying drawings explained. It shows

1 a partial sectional view through an embodiment of a mobile communication device according to the invention,

2 a linear bearing means of the mobile communication device according to the invention in cross-section,

3 the linear bearing means according to 2 in a perspective exploded view,

4 a housing half of a ball return housing of the linear bearing means of 2 in a plan view,

5 the housing half in section along the line AA the 4 .

6 the housing half in section along the line BB of 4 , and

7 the two housing halves in section along the line CC of 4 ,

Detailed description the drawing

1 shows in cross section a schematic diagram of a mobile communication device according to the invention 1 in the form of a mobile phone. The mobile communication device 1 includes two housing parts 2 and 3 namely a lower housing part 2 and an upper housing part 3 , these two phone parts 2 . 3 in 1 are shown only schematically and partially. The mobile communication device 1 may also be formed as another communication device, such as a PDA (Personal Digital Assistant), a mobile radio or the like. At the lower housing part 2 a keyboard, not shown, which is in the closed state from the upper housing part 3 is covered. The upper housing part 3 has a display 4 on and is relative to the lower housing part 2 displaced. For this purpose, a linear bearing means 5 present, over which the two housing parts 2 . 3 are mounted linearly displaceable relative to each other. The linear bearing means 5 includes in the example shown a guide rail 6 and two linear bearings 7 ,

The at the upper housing part 3 arranged guide rail 6 has a wide middle leg 8th as well as two of them vertically projecting side legs 9 on. The side legs 9 have on their inner sides rolling elements raceways 10 on, for example in the form of suitable grooves in the rolling elements 11 , namely bearing balls, the linear roller bearing 7 intervention.

The two linear bearings 7 are at a common leadership unit, which serves as a carriage 12 is designated arranged. The rolling elements 11 protrude on the two opposite sides and roll in a linear motion in the Wälzkörperlaufbahnen 10 the guide rail 6 from. The carriage 12 is formed in three parts and consists of a support body 13 and a ball return housing 14 , which consists of two identical, mutually complementary housing halves 15 consists. While the case halves 2 . 3 of the mobile communication device 1 are shown in section, is the linear bearing means 5 shown from the front.

In 2 is the linear bearing means 5 shown in cross section. The mounting rail 6 has several holes 16 on which of the attachment to the upper housing part 3 serve. The supporting body 13 also has several holes 17 for attachment to the lower housing part 2 on. The in profile U-shaped support body 13 has a wide middle leg 18 as well as two of them vertically projecting side legs 19 on. The side legs 19 have on their outer sides Wälzkörperlaufbahnen 20 in which the rolling elements 11 of the linear roller bearing 7 roll. The supporting body 13 encompasses the ball return housing 14 in the range of narrow sides 21 thereof. To overload in pressure direction 7 the linear roller bearing 7 To relieve and protect against damage, is the support body 13 with strips extending transversely to its longitudinal extension 22 provided, which in case of overload on both sides end faces 23 the guide rail 6 put on. At the same time put feet 24 of the supporting body 13 on the middle thigh 8th the guide rail 6 on, so that in particular the relatively sensitive ball return housing 14 is relieved.

In 3 is the linear bearing means 5 with the guide rail 6 and the carriage 12 shown in perspective in an exploded view. For mounting the carriage 12 are first made of a polymeric material housing halves 15 of the ball return housing 14 assembled. For this purpose, the geometrically complementary double-T-shaped housing halves 15 each at their ends a hole 25 and one pin each 26 on, so that two identical housing halves can be placed on each other and connected to each other, for example by a snap-in connection or by welding.

After connecting the housing halves 15 be in a manner to be described, the rolling elements 11 the two linear bearings 7 in the ball return housing 14 filled. Finally, the support body 13 with the ball return housing 14 connected, including the existing also of a polymeric material supporting body 13 on the ball return housing 14 is plugged. A clamping fit results from the fact that the side legs 19 of the supporting body 13 on the narrow side 21 of the ball return housing 14 abut and thereby, that broadsides 27 forming T-angles 28 of the ball return housing 14 the front ends 29 of the supporting body 13 embrace. After mounting the supporting body 13 with the ball return housing 14 becomes the chain of rolling elements 11 the linear roller bearing divided into two parts, one of which is in the ball return housing 14 and the other on the rolling element track 20 of the supporting body 13 is arranged.

In 4 is a housing half 15 of the ball return housing 14 from above or from below, as well as in the 5 in section along the line AA the 4 and in 6 in longitudinal section along the line BB of 4 shown on an enlarged scale. The housing half 15 of the ball return housing 14 has two mirrored ball return tracks 30 on, each having an inner section 31 with a straight course and two outer curved, as deflections 32 serving railway sections, wherein the deflections 32 in the T-angles 28 open and in each case in a rolling element career 20 of the supporting body 13 open out. From there, the in 4 Rolling elements not shown 11 into the sphere of influence of the also in 4 not shown rolling element raceways 20 of the supporting body 13 , so that with linear movement of the carriage 12 along the guide rail 6 the rolling elements 11 the linear roller bearing 7 can circulate endlessly in their respective orbits. To the rolling elements 11 in a simple way in the carriage 12 or in the ball return housing 14 to be able to fill, has each housing half 15 of the ball return housing 14 each in the region of the middle ball track section 31 a filling groove 33 whose width is less than or equal to the diameter of the rolling elements 11 is. Through these filling grooves 33 The rolling elements are machined in the ball return housing 14 filled, wherein the filling before or after the connection of the ball bearing housing 14 with the support body 13 he follows.

To the connection of two housing halves 15 to facilitate each other and a secure connection of two housing halves 15 To ensure this, have them next to the hole 25 and the pin 26 each along the central axis of a groove 34 and a high standing 35 Ledge, each with a corresponding groove or strip of the other half of the housing 15 correspond. These connecting means are in particular in 6 clearly visible.

In 7 are two mounted housing halves in section corresponding to the line CC of 4 shown. The housing halves 15 are already mounted and permanently connected to each other. The rolling elements 11 are in the stage of filling in the ball bearing housing 14 shown. The filling of the rolling elements by means of a suitable machine tool. These are the filling grooves 33 in the area of the top of a housing half 15 slightly conically widened, whereby the filling is facilitated, especially if the inside width of the filling grooves 33 , as in 7 shown, is less than the diameter of the rolling elements 11 , Due to the plastic properties of the polymeric material of the housing halves, the rolling elements can still effortlessly into the ball bearing housing 14 are filled, which, after completion of the filling process, not from the ball screw housing 14 can fall out.

However, it is also within the scope of the invention, in particular in the use of metallic materials for the housing halves 15 , the width of the filling grooves 33 the diameter of the rolling elements 11 to adapt, ie to design both equally wide.

The supporting body 13 according to the embodiment has a length of 10 mm and is in the middle 6.26 mm wide. The ball bearing housing 14 is 3.45 mm wide and has a height of 1.7 mm. The rolling elements 11 in the form of bearing balls each have a diameter of 0.79 mm.

The inventively designed mobile communication device 1 has a very accurate, backlash-free and extremely robust linear guide means 5 on, which results in a very precise and smooth movement. The sliding movement of the housing parts 2 . 3 is stop limited, which is not shown in detail. As well as the open position, the closed position via suitable locking means, which can be suppressed to open or close, locked.

Obviously, a very stable and robust linear guide is realized, which is a simple and playful for a long period of use and haptically very valuable and pleasant displacement of the upper housing part 3 allows.

Finally, it should be noted that it is of course also possible, the linear roller bearings 7 on the upper housing part 3 and the guide rail 6 on the lower housing part 2 to arrange.

A particular advantage of the inventively designed linear bearing means 5 is to be seen in that by the special design of his ball return barrel 14 in machine filling with rolling bearing bodies 11 is possible.

1

mobile communication device

2

lower housing part

3

upper housing part

4

display

5

Linear bearing means

6

guide rail

7

linear bearings

8th

Middle leg of the guide rail 6

9

Side legs of the guide rail 6

10

rolling body

11

rolling elements

12

carriages

13

supporting body

14

Ball return housing

15

housing half

16

drilling

17

drilling

18

Middle leg of the support body 13

19

Side legs of the support body 13

20

rolling body

21

Narrow side of the ball return housing 14

22

strip

23

front

24

foot

25

drilling

26

spigot

27

broadside

28

T-angle

29

Front side of the supporting body 13

30

Ball-return path

31

straight web section

32

redirection

33

filling slot

34

groove

35

strip

A-A

line

B-B

line

C-C

line

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102007004780 [0003]
• - DE 202006011673 U1 [0003]
• - DE 19614513 A1 [0004]

Claims (13)

Mobile communication device ( 1 ) with two housing parts ( 2 . 3 ), which via a linear bearing means ( 5 ) are mounted longitudinally displaceable relative to each other, wherein the linear bearing means ( 5 ) two in a carriage ( 12 ) linear bearings ( 7 ) with rolling element feedback ( 14 ) and at least one guide rail ( 6 ) with a middle leg ( 8th ) and two vertically projecting side legs ( 9 ) having formed on their inner sides Wälzkörperlaufbahnen ( 10 ), in the rolling elements ( 11 ) of the linear rolling bearing ( 7 ), and wherein the two linear roller bearings ( 7 ) on a housing part ( 2 ) and the guide rail ( 6 ) on the other housing part ( 3 ) are arranged, characterized in that the carriage ( 12 ) from one with a housing part ( 2 ; 3 ) connectable support body ( 13 ) and one with the support body ( 13 ) connected ball return housing ( 14 ), wherein the ball return housing ( 14 ) of two identical, mutually complementary housing halves ( 15 ), wherein the supporting body ( 13 ) is U-shaped in profile and side legs ( 19 ), which on their outer sides Wälzkörperlaufbahnen ( 20 ) for the rolling elements ( 11 ) and which on the ball return housing ( 14 ) in the area of narrow sides ( 21 ) of the ball return housing ( 14 ) and wherein the ball return housing ( 14 ) two mirror-inverted ball return tracks ( 30 ) each with a deflection ( 32 ), which in each case in a rolling body track ( 20 ) of the supporting body ( 13 ). Mobile communication device according to claim 1, characterized in that the complementary housing halves ( 15 ) of the ball return housing ( 14 ) are each formed double T-shaped. Mobile communication device at least according to claim 1, characterized in that the supporting body ( 13 ) on the ball return housing ( 14 ), whereby the side legs ( 19 ) of the supporting body ( 13 ) on the narrow sides ( 21 ) of the ball return housing ( 14 ), and where broadsides ( 27 ) forming T-angles ( 28 ) of the ball return housing ( 14 ) End faces ( 29 ) of the supporting body ( 13 ) embrace. Mobile communication device at least according to claim 1, characterized in that the housing halves ( 15 ) of the ball return housing ( 14 ) each two mirror images arranged ball return paths ( 30 ) each having an inner portion ( 31 ) with a straight course and two outer curved deflections ( 32 ), wherein the deflections ( 32 ) in each case into a rolling body raceway ( 20 ) of the supporting body ( 13 ). Mobile communication device according to claim 4, characterized in that each housing half ( 15 ) of the ball return housing ( 14 ) in each case in the region of the middle ball track section ( 31 ) a filling groove ( 33 ) whose width is less than or equal to the diameter of the rolling elements ( 11 ). Mobile communication device according to claim 5, characterized in that the filling grooves ( 33 ) in the region of the upper side of a housing half ( 15 ) are conically widened. Mobile communication device at least according to claim 1, characterized in that the housing halves ( 15 ) of the ball return housing ( 14 ) at their ends in each case a bore ( 25 ) and one pin each ( 26 ), by which the housing halves are connectable to each other. Mobile communication device at least according to claim 1, characterized in that the housing halves ( 15 ) of the ball return housing ( 14 ) each along the central axis of a groove ( 34 ) and a raised bar ( 35 ), each with a corresponding groove ( 34 ) or bar ( 35 ) of the other housing half ( 15 ) correspond. Mobile communication device at least according to claim 1, characterized in that at least the ball return housing ( 14 ) consists of a polymeric or metallic material. Mobile communication device at least according to claim 12, characterized in that the supporting body ( 13 ) with overflowing strips ( 22 ), which in the event of overloading in the printing direction on end edges ( 23 ) of the guide rail ( 6 ), and that the side legs ( 19 ) of the supporting body ( 13 ) at their ends feet ( 24 ) which, when overloaded in the pressure direction on the middle leg ( 8th ) of the guide rail ( 6 ) put on. Mobile communication device at least according to claim 10, characterized in that the supporting body ( 13 ) has a length of 10 mm and a width of 6.26 mm, and that the ball return housing ( 14 ) has a width of 3.45 mm and a height of 1.7 mm, and that the rolling elements ( 11 ) each have a diameter of 0.79 mm. Method for mounting a mobile communication device with the features at least according to claim 1, characterized in that the two housing halves ( 15 ) of the ball return housing ( 14 ) are joined together, and then that the rolling elements ( 11 ) mechanically through the filling grooves ( 33 ) in the ball return housing ( 14 ) are filled. Method for mounting a mobile communication device with the features at least according to claim 1, characterized in that the two housing halves ( 15 ) of the ball return housing ( 14 ) are connected to each other, then that the supporting body ( 13 ) with the ball return housing ( 14 ) is connected, and that finally the rolling elements ( 11 ) mechanically through the filling grooves ( 33 ) the lower half of the housing ( 15 ) in the ball return housing ( 14 ) are filled.