CN1026841C

CN1026841C - Hinge apparatus for foldable radio-telephones

Info

Publication number: CN1026841C
Application number: CN92102033.3A
Authority: CN
Inventors: 帕吾力克·托马斯E
Original assignee: Motorola Inc
Current assignee: Motorola Solutions Inc
Priority date: 1991-03-28
Filing date: 1992-03-24
Publication date: 1994-11-30
Anticipated expiration: 2007-03-24
Also published as: FR2675327B1; FR2675327A1; AU655027B2; GB2260571B; WO1992017974A1; SE503806C2; MX9201332A; IT1253960B; JPH05506768A; GB9224734D0; KR930701025A; SE9203110D0; DE4290923T1; CA2078233A1; GB2260571A; ITRM920203A0; ITRM920203A1; AU1763192A; KR950014618B1; CN1070781A

Abstract

A hinge apparatus for a foldable telephone includes a body portion and a flip element . The flip element is held in a closed and open position relative to the body portion by an enclosed follower which follows recesses in a first hinge shaft . The recesses are positioned relative to the follower such that a torque of a force is applied to the hinge shaft thereby resulting in a low profile flip element . Wires dressed from the flip element to the body portion (301) are protected from damage by an arm pulling the wires towards the center of second hinge shaft (527) and by allowing the second hinge shaft to rotate with the flip element.

Description

Hinge apparatus for foldable radio-telephones

In general, the present invention relates to the hinge joint casing that miniaturized electronics is used; More particularly, the present invention relates in folding means, utilize the folding radio phone of hinge joint casing.

The application of portable type cellular telephone machine grows with each passing day, and the user can be communicated by phone in wireless system on any active position.This kind portable telephone function to a receiving station, is equipped with the emission of radio frequency signals of low wattage here and being connected of conventional telephone system.Will have numerous receiving station to divide in an area and be located on the isolated fixed position, be used for receiving the signal that this kind portable telephone set is launched, this is because this kind telephone set can at this point be distinguished and shift one's position.

Utilized the telephone set of two casing spares that link to each other with certain hinge joint mechanism, all belonged to commonly in the radio extension set of telephone equipment and communication by land, and it is comparatively common also to have become in portable type cellular radio telephone machine.

Adopted some radiophone of above-mentioned design form its most electronic circuits and components and parts to be located within one bigger in these two casings.Less casing will be referred to as flip element later, and it contains the microphone and the awl bell parts that shake usually.In order to obtain best acoustical behavior, above-mentioned flip element must be in an optimum position with respect to the fuselage of radiophone.Can make microphone to user's mouth that one section distance that meets the requirements is arranged like this.Because microphone must be realized being electrically connected with components and parts with RGU ring unit with the electronic circuit in the radiophone fuselage, so the jockey by the hinge joint district must be arranged.A kind of like this jockey was described in No. 4897873, United States Patent (USP), for shown in Figure 1, wherein on the microphone and the electric component of RGU ring unit in lead 105 is linked fuselage part 103 in the flip element 101, this lead 105 just enters in the fuselage part 103 then by the groove 109 in hinge joint joint 107, the cardan axle 111.Above-mentioned cardan axle 111 can make the hinge joint joint 107 of flip element 101 rotate around axle 111 when being installed on the fuselage part 103.A most significant problems in a kind of like this structure, when flip element 101 was rotated, lead 105 can be squeezed between cardan axle 111 and hinge joint joint 107 1 medial surfaces.This kind extruding makes lead disrumpent feelings the most at last, and causes the loss that electrically contacts of flip element 101 interior microphones or RGU ring unit.

The radiophone of the employing said structure of other types is that whole electronic devices and components and electronic circuit are arranged within one bigger in two casings, and flip element no longer contains the device and the electronic circuit of this electron-like.Produce a kind of state that is combined when a kind of like this flip element can be in " closure " position at it, and when it turns to its " breakdown " position, produce a kind of unhook state.A kind of radiophone that this position of flip element is used for controlling purpose is described to for No. 4845772 at United States Patent (USP).When this kind flip element was in its " closure " position, radiophone then was in the wait state of preparing to receive an incoming call.Above-mentioned flip element is covered with the part keyboard on the radiophone fuselage at least, so just can provide shielding to key, avoids key to be pressed by the other places or for contaminating impurity.When this reversing part was in " breakdown " position, it just can make microphone not influenced by background noise.

For making this flip element be positioned closed and breakdown position, adopted technology miscellaneous.United States Patent (USP) has been described a kind of radiophone No. 4897893, and its utilizes the last groove of axle agree to fixing hinge element and the closed guide plate that moves keeps flip element to be in closure and breakdown position.The detail drawing of this kind guide agency is seen Fig. 2 A and Fig. 2 B in the accompanying drawing.Fig. 2 A shows the groove 201 understood when flip element 101 is in closure or hooks together the position and 203 position.Fig. 2 B shows the position of understanding aforementioned two dimples when this flip element is in the form of opening or unhook position.When flip element 101 breakdowns, have and shift out in the braking groove 203 of guide plate 205 from cardan axle 207 and fall on the major diameter surface of this cardan axle 207.Be positioned at a wall portion 211 therewith the reed 209 of 205 of keep plates force this guide plate to paste consistently to prop up axle 207.Along with flip element is rotated further mutual breakdown or unhook state, braking guide plate 205 just continues pushing and pressing axle 207, forces it self to enter groove 201 then.Power in braking guide plate 205 grooves 201 just makes flip element 101 remain in desired location.When this flip element 101 is in breakdown and is in the close position, the just prominent center of braking guide plate 205 to cardan axle 207.Because the plane of the misalignment flip element 101 of this cardan axle 207, this braking guide plate 205 just must sloped position.The obliquity of braking guide plate 205 has limited the former degree 215 of flip element 101.The degree of miniaturization that improves radiophone can make it be packaged in the littler casing of size, and the size of the hinge joint assembly of ubi supra has limited the thickness 215 of further reduction flip element 101.

So just required a kind of like this hinge joint assembly, it can be protected from flip element and pass through the lead of hinge joint joint to fuselage, can make flip element have less size simultaneously.

According to the present invention, described hinge joint equipment comprises first housing, second housing, cylindrical cardan axle, groove, driven member and bias unit.First housing comprises hinge cavity.Second housing comprises the hinge joint joint with cylindrical and places in the hinge cavity.The cylindrical axle that connects has the circumferential surface and the longitudinal axis.Cylindrical cardan axle partly is placed in the cylindrical in hinge joint joint, links to each other with first housing, makes first housing and second housing rotate connection around the longitudinal axis.Groove is formed on the circumferential surface of cylindrical cardan axle and is located in the cylindrical in hinge joint joint.Driven member has the longitudinal axis, is located in second housing at least in part and puts in the cylindrical in hinge joint joint.Bias unit impels driven member along its y direction, this direction is basically perpendicular to but the longitudinal axis of stray circle cylindricality cardan axle, shift to the circumferential surface of cylindrical cardan axle, make when second housing rotates with respect to first housing driven member contact first groove of cylindrical cardan axle, torque is imposed on cylindrical cardan axle, thereby second housing is remained on the primary importance of rotating with respect to first housing.Be in the flip element 2 at least partially and an end that is in the above-mentioned groove is arranged.This driven member has to aforementioned cylindrical cardan axle and applies a power, and this line of action of force parallels with the axis of driven member basically, and the vertical range between this position and such rotation axis then makes; When flip element is on the said primary importance, can on this cylindrical cardan axle, produce a torque.

The following describes accompanying drawing of the present invention.

Fig. 1 show understand a kind of with lead from flip element RGU ring unit and microphone in be connected to the routine techniques of radiophone fuselage.

Fig. 2 A and 2B are the end view of a kind of conventional guide agency through cutting open, and flip element is wherein closed to put and shown bright with open position to close the position respectively.

Fig. 3 is the isometric drawing that can adopt a kind of walkie-talkie of the present invention.

Fig. 4 is the end view of above-mentioned radiophone, and flip element wherein is near make position.

Fig. 5 is the exploded view of fuselage part and flip element of the hinge joint assembly of radiophone shown in the key diagram 3.

Fig. 5 A is the cutaway view of the hinge cavity of above-mentioned fuselage, shows and understand the circular hole of offering in the rib of a setting.

Fig. 5 B is the isometric drawing of the bottom side of hinge joint joint shown in Fig. 5 and cardan axle.

Fig. 6 A and 6B are partial side views of braking hinge joint mechanism, and flip element wherein is shown in closed and breakdown position respectively.

Fig. 7 is the more detailed end diagrammatic sketch of cardan axle shown in Fig. 6 A and the 6B.

Fig. 8 shows and bright lead is connected to device in the fuselage from the microphone of flip element.

Fig. 9 is the drawing in side sectional elevation of the hinge joint axis of aforementioned radiophone.

Brief description most preferred embodiment of the present invention.

Show among Fig. 3 and understand a kind of walkie-talkie that is applicable to radio telephone system.This portable radiophone 300 is basically by two conspicuous parts, and fuselage 301 is formed with flip element 303.Bright flip element shown in Figure 3 is in " breakdown " position, the user of this kind telephone set can be listened to by earphone 305, and can say to microphone 307.309 on keyboard comprises and a collection ofly is marked with 1 to 0 and the button of # and * etc., belongs to known telephone set form.Keyboard 309 can also have other function key, for example volume control and other key relevant with the telephone number recall.Antenna 311 can make and carry out radio communication between this kind walkie-talkie and the base station.

When reversing part 303 was breakdown form shown in Fig. 3, this telephone set just can be in replied or carries out telephone call state.Such state is referred to as " unhook " usually after finishing a call, and the user can remove this flip element to make position and shelve this telephone set.Can finish this kind by following step and shelve operation, promptly allow flip element 303, make flip element 303 fall to being stopped on the keyboard 309 around the rotational of hinge joint portion 312.Aforesaid operations has started hook switch, impels call to stop.On this closed position, this walkie-talkie promptly is in the stand-by state of preparing to receive an incoming call.The closing course of flip element 303 has provided its most eye-catching expression in Fig. 4.Hook switch is to be positioned within the flip element 303 in this most preferred embodiment.In this most preferred embodiment, this hook switch is just to start when the angle between fuselage 301 and the flip element 303 approximates 45 °.

In this most preferred embodiment, flip element 303 is that the combining form by some parts shown in Fig. 5 remains in breakdown or make position.One braking driven member 501 is arranged in hinge joint joint 503, and it compels to be affixed to cylindrical cardan axle 505 by the elastic fluid of reed 509 and so on.This reed 509 is to be formed by flat crooked steel disc, and its first end 511 hooks together in the flip element 303 on the protuberance 513.The middle body of reed 509 is compressing a pillar 515, makes second end 517 of this reed can force braking driven member 501 to enter in the hinge joint joint 503 by a hole 519.The structure of cardan axle 505 can make flip element 303 hook together or can remain on the keyboard 109 during make position, is breaking off relations or is then becoming obtuse angle relation (for example, angle 0 equals 150 °) during the breakdown position with it.One end 521 of cardan axle 505 is got elongated shape, can be coupled in shape in the fuselage 301 front housing portions 525 and the basic identical but bigger slightly hole 523.In this rotation of cardan axle 505 with respect to hinge joint joint 503 can around the front housing portion 525 of rotation be stable.

Be positioned within the second hinge joint joint 529 second cardan axle 527 and can support the rotation of flip element 303 to provide a kind of device simultaneously, be used for making in order be attached on the microphone 533 from flip element 303 to fuselage on lead 531.Magnet 801 in this flip element 303 produces a control signal in response to the turned position of these parts in fuselage.Lid 535 has covered reed 509, microphone 533 and its lead 513 and the magnet in flip element 303 801.

In joint placed in the middle 552, be provided with intermediate plate 550, be used for preventing

axle

527 and 505 slippages from their relevant

hinge joint joints

529 and 503.

Fig. 5 A is the drawing in side sectional elevation of front housing portion 525.Offer a circular hole 537 by a rib 539 of erectting.The cylinder-shaped end 541 that is shown in the cardan axle 527 among Fig. 5 promptly is placed in this circular hole 537.Cardan axle 527 is rotated with respect to front housing portion 525.

Fig. 5 B has provided the opposite side of cardan axle 527 bright shown in Fig. 5 A.Cardan axle 527 has the groove 543 of one three limit formula, along this total length, enters in the groove 527 through a predetermined dense degree of depth.529 in joint of hinge joint have one or three limit formulas guide rail 545 it be located on the medial surface in this joint and along the length in this joint to prolonging a predetermined distance.Cardan axle 527 is to plug together in this wise within the hinge joint joint 529, promptly makes guide rail 545 be disposed in the groove 543, in the hinge joint joint 529 of thus cardan axle 527 being interlocked.The cardan axle 527 of this moment can be with the rotation of flip element 303 around self rotational.Cardan axle 527 characteristics in the hinge joint joint 529 of interlocking have overcome the problem that lead is squeezed when cardan axle rotates in the hinge joint joint in the prior art (Fig. 1).

The more detailed figure of braking hinge joint equipment is shown among Fig. 6 A and Fig. 6 B.Fig. 6 A shows clear when flip element 103 is in closure or hooks together the position,

groove

601 and 603 positions with respect to braking driven member 501.Fig. 6 B then shows clear when this flip element is in breakdown or unhook position,

groove

601 and 603 positions with respect to braking driven member 501.When breakdown flip element 303, braking driven member 501 just shifts out from the groove 601 of cardan axle 505, and enters on this major diameter surface of 505.Reed 509 will be braked driven member 501 and attach on the cardan axle 505.Along with this flip element is rotated further breakdown or disengaged condition, braking driven member 501 just continues pushing cardan axle 505, forces it self to enter in the groove 603 then.The power of braking driven member 501 in groove 603 just remains in flip element 303 on the desired position.

Basic characteristics of this most preferred embodiment of the present invention are, when flip element is in its make position and during the breakdown position, braking driven member 501 can apply a torque around the power of its central axis to cardan axle 505.This torque that acts on the power on the cardan axle 505 is to be formed with 603 by the angled groove 601 of configuration, and their make to brake the center that driven member 501 does not pass through cardan axle 505.The advantage of this method for designing is, can make braking driven member 501 be set to identical with flip element 303 or the plane that is close in, so just can adopt a kind of than the flip element that approaches.In this most preferred embodiment, braking driven member 501 is arranged to form a little angle 4 with the plane of flip element 303, for example 10 °, is convenient to the mold pressing braking driven member 501 of sening as an envoy to and is positioned at wherein groove 519.Other embodiment that have different mold pressings to consider then have an opportunity braking driven member 501 is arranged in the plane identical with flip element 303.Thin flip element helps to alleviate the weight of walkie-talkie.These basic characteristics help to eliminate the condition of bringing big thickness in the prior art in the flip element described in Fig. 2 A and the 2B front.

Referring to Fig. 7, wherein show the end of understanding the cardan axle 505 that provides among Fig. 6 A and the 6B in more detail below.Groove 601 has two to belong to smooth surface 701 and 703 basically, and the two is handed at angle.When 501 of driven members of braking have two that be in closure when flip element 303 or positions of hooking together, respectively with groove 601 in plane surface 701 and 703 contacted even

curface

705 and 707 of belonging to basically.Act on the initial moment of power F1 between the plane surface 705 of the plane surface 701 of groove 601 and braking driven member 501, it makes that with respect to the central axis of cardan axle 505 flip element 303 can be pre-loaded, therefrom the latter is remained in position on its closure.

Tongue 603 also has two to belong to even

curface

709 and 711 basically.501 of driven members of braking have two when flip element 303 is in position breakdown or unhook, respectively with the

plane surface

709 and 711 contacted even

curface

713 and 715 of belonging to basically of groove 603.Then act on the initial moment of plane surface 709 with the power F2 of braking driven member 501 of groove 603, it is with respect to the central axis of cardan axle 505, between the plane surface 713.

Two fabricate Plane intersects φ in an acute angle by what the surface 711 of the surface 701 of groove 601 and groove 603 formed, it is relevant with the open angle of flip element 303 0.In this most preferred embodiment, when flip element 303 was in breakdown position shown in Fig. 6 B, aforementioned two angle φ and 0 sum were about 180 °.This design of cardan axle 505, when allowing flip element 303 to be in breakdown or make position 45 °, can by other auxiliary equipment and carry out breakdown or closure.This kind flip element can also exceed about 30 ° of breakdown position stroke when stressed, and automatically returns to the breakdown position when power is removed.

Fig. 8 is the end-view of the microphone lead of protection in the hinge joint joint.The lead 531 of microphone 533 pulls to the center of cardan axle 527 for arm 805.The advantage of this most preferred embodiment of the present invention is to be positioned near the lead 531 in cardan axle 527 centers and to have only very little rotational travel when flip element is rotated, thereby the torsion on the lead is minimized.

Hook switch in the above-mentioned most preferred embodiment is positioned within the flip element 303, this in Fig. 8 as can be seen.In this most preferred embodiment, when the angle of 303 of fuselage 301 and flip element was similar to 45 °, aforementioned hook switch promptly started.Be provided with a common magnet 801 in the flip element 303.When flip element 303 around the rotational of the 3R of hinge joint portion during to its make position, the magnetic field that is produced by magnet 801 makes the contact in the closed upper reed plate switch 803, just produces a control signal that indicates the state of hooking together thus.When flip element 303 when last hinge joint portion turns to the breakdown position, promptly in the adjacent area of reed switch 803, remove by magnet 801 formed magnetic fields, the contact of reed switch is disconnected, produce a control signal that indicates the unhook state therefrom.

In this most preferred embodiment, the casing of fuselage 301 is shown in Figure 5ly to be made up of back cabinet 551 and front housing 525 two parts.After Fig. 9 shows that the parts of understanding in Fig. 5 have assembled, the drawing in side sectional elevation of hinged part.Flip element 303 is connected on the fuselage by aforesaid cardan axle 505 and 527.When the back cabinet 551 of fuselage closed synthetic integral body with front housing 525, the

rib

901 and 903 of back cabinet 551 just overlapped respectively and is incorporated within the

rib

539 and 524 of front housing.Corresponding aperture 537 in the Kong Zetong front housing 525 in the

rib

901 and 903 of this back cabinet and 523

concentric alignment.Axle

527 and 505 is passed through their hinge

joint joints

529 and 503 separately, and by the hole in the helping of front and back casing.Then intermediate plate 550 is put into joint placed in the middle 552, prevent that

axle

527 and 505 is from wherein slippage.In this most preferred embodiment, above-mentioned cardan axle just thinks that flip element is in the close position Shi Caineng and removes.

So far show bright already and described a kind of hinge joint equipment that is used for radiophone.The equipment of this novelty has caused forming a kind of so thin flip element, it can alleviate the weight of walkie-talkie effectively, can make simultaneously from then on flip element itself in order has eliminated the broken string accident and has made rotation stress reduce to minimum limit to the lead of fuselage.

Claims

1, the hinge joint equipment of a kind of folding radio phone (300) usefulness, this telephone set has fuselage part (301) and flip element part (303), fuselage part (301) comprises a hinge cavity, flip element part (303) comprises that the first hinge joint joint (503) has a cylindrical and is placed in the hinge cavity, this hinge joint equipment can maintain flip element part (303) primary importance at least with respect to fuselage part (301) rotation, and this hinge joint equipment is characterized in that:

The first cylindrical shape cardan axle (505), have a circumferential surface and the longitudinal axis, the first cylindrical cardan axle (505) places in the cylindrical in the first hinge joint joint (503) at least in part, and is connected with fuselage part (301), make flip element part (303) and fuselage partly (301) be rotatably connected around the longitudinal axis;

First groove (601) is formed on the circumference table of the first cylindrical cardan axle (505) and places in the cylindrical in the first hinge joint joint (505);

Driven member (501) has a longitudinal axis, is placed at least in part in the flip element part (303), and puts in the cylindrical in the first hinge joint joint (503);

Bias unit (509), impel driven member (501) to be basically perpendicular to but depart from the y direction of first cylindrical cardan axle (505) longitudinal axis along it, shift to the circumferential surface of the first cylindrical cardan axle (505), make and work as flip element part (303) with respect to fuselage part (301) rotation, driven member (501) just will contact first groove (601) of the first cylindrical jointed shaft (505), first torque is imposed on the first cylindrical cardan axle (505), thereby flip element is partly maintained on the primary importance of rotating with respect to fuselage part (301).

2, hinge joint equipment as claimed in claim 1, it can remain on flip element part (303) on the second place of rotating with respect to fuselage part (301), and this its feature of hinge joint equipment also is to comprise,

Second groove (603) that is located on the described circumferential surface, make when flip element part (303) relative to fuselage partly (301) when rotating, second groove (603) of driven member (501) the contact first cylindrical cardan axle (505), second torque is applied on the first cylindrical cardan axle (505), thereby flip element part (303) is remained on the second place of rotating with respect to fuselage part (301).

3, hinge joint equipment as claimed in claim 1 wherein is connected with described reversing part (303) and fuselage part (301) flexible conductor (531) that the two had, and its feature of this kind hinge joint equipment also is to comprise:

-columniform second cardan axle (527), it has a periphery, and can be coupled described flip element part (303) and fuselage (301) in rotating mode;

Be located at the groove on above-mentioned second periphery, it has a part that described flexible conductor (531) can be arranged at wherein; And

Be used for making this second cylindrical cardan axle (527) with respect to the rotation of this flip element (301) and the device that rotates.

4, hinge joint equipment as claimed in claim 3, it also includes and is used for described flexible conductor (531) is closed in the interior device (805) of said groove at least partially, reduces the rotational travel of flexible conductor (531) when flip element part (303) is rotated thus.

5, hinge joint equipment as claimed in claim 5 is characterized by the device that the second cylindrical cardan axle is rotated and comprises:

-be located at the groove (543) on the circumferential surface of described cylindrical cardan axle (527);

-the second hinge joint joint (529) has circumferential inner surface, joins with an end of flip element part (303);

-be located on the described circumferential inner surface and be located at guide rail (545) in the described groove (543), make the second cylindrical cardan axle (527) rotate with respect to the rotation of flip element (303).

6, hinge joint equipment as claimed in claim 4 is characterized in that locking device (805) comprising:

-with the second contacted arm of cylindrical cardan axle groove surfaces and stretch the groove that surpasses the second cylindrical cardan axle at least in part.