CN102318018B

CN102318018B - Electronic parts click mechanism and rheostat

Info

Publication number: CN102318018B
Application number: CN201080007162.8A
Authority: CN
Inventors: 福岛肇; 坂井佑介
Original assignee: Tokyo Cosmos Electric Co Ltd
Current assignee: Tokyo Cosmos Electric Co Ltd
Priority date: 2009-02-10
Filing date: 2010-02-05
Publication date: 2013-09-04
Anticipated expiration: 2030-02-05
Also published as: TWI399760B; CN102318018A; KR20110113605A; KR101653352B1; JP5256070B2; HK1162738A1; JP2010186792A; TW201042669A; WO2010092910A1

Abstract

Increased spring counterforce, high torque feeling and high click feeling are realized and the click sound is made more distinct. An extension (5e) that extends from an annular part (5a) of a click spring (5) is engaged with the retainer (4f) of a stopper (4). While the click spring (5) tries to move to one side against the fulcrum of the stopper (4) by means of the pressure of a click plate (13)on a pressed part (5c), the retainer (4f) presses against the extension (5e) and suppresses that movement. Thus, increased click spring counterforce, high torque feeling, and high click feeling can be realized, and the click sound can be made more distinct.

Description

Card locking mechanism and the variable resistance of electronic unit

Technical field

The present invention relates to a kind of card locking mechanism of electronic unit.Particularly relate to the card locking mechanism that makes variable resistance and possess the technology that stronger torque sense and card end sense, this variable resistance is on-off switch and make change in resistance by making the rotating shaft rotation.

Background technology

The variable resistance that portable electron devices such as relative wireless device adopt is required miniaturization, and the operation knob that this variable resistance adopts is tending towards in order to improve its operability maximizing.Therefore, in variable resistance, the demanding slip torque in order to prevent the mistake rotation, and in order to make the clear and definite and demanding ladder torque (ステ Star プト Le Network) of operation thoughts and feelings.

In the prior art, slide and produces card that torque sense and card end sense and end spring (Network リ Star Network バネ) P1 and together make the only restraint parts P2 that rotates of spring P1 shown in Figure 10 A and Figure 10 B, combine (for example, with reference to patent documentation 1) of card with the rotation of rotating shaft by end plate (Network リ Star Network plate) at card.

That is, insert the through hole P1a that card ends spring P1 by the jut P2a that makes restraint parts P2, and utilize hot riveting etc. to make the leading section of jut P2a produce plastic deformation, only spring P1 and restraint parts P2 combine thereby make card.

Patent documentation 1:(Japan) open clear 62-168607 communique in fact

But, near the plastic deformation of the leading section of jut P2a, the adhesion that card ends spring P1 and restraint parts P2 a little less than, can not increase the only reaction force of spring P1 of card, therefore, be difficult to guarantee high slip torque, high ladder torque.

Summary of the invention

In order to solve above-mentioned problem, make the press section that is fastened on the restraint parts from the extension that blocks the annulus extension that ends spring.End plate to the pressing of press section by card, it is that fulcrum fascinates that card ends that spring desires with the restraint parts, but press section suppresses above-mentioned and fascinates by pushing down extension.

Owing to can increase the reaction force that card ends spring, therefore can realize high slip torque and high ladder torque compared to existing technology.

Description of drawings

Fig. 1 is the exploded perspective view of the embodiment of variable resistance;

Fig. 2 is the stereogram of the embodiment of variable resistance;

Fig. 3 is the profile of the embodiment of variable resistance;

Fig. 4 A is the vertical view that card ends the embodiment of spring, and Fig. 4 B is the front view that card ends spring, and Fig. 4 C is the upward view that card ends spring;

Fig. 5 A is the vertical view of the embodiment of restraint parts, and Fig. 5 B is the front view of restraint parts, and Fig. 5 C is the upward view of restraint parts, and Fig. 5 D is the left view of restraint parts;

Fig. 6 A is expression restraint parts and the stereogram that blocks the embodiment of the assembled state of ending spring, and Fig. 6 B is the profile of this assembled state;

Fig. 7 A is that expression restraint parts and card end the stereogram of the variation of spring, and Fig. 7 B is the profile of this variation;

Fig. 8 A is that expression restraint parts and card end the stereogram of the variation of spring, and Fig. 8 B is the profile of this variation;

Fig. 9 A is that expression restraint parts and card end the stereogram of the variation of spring, and Fig. 9 B is the profile of this variation;

Figure 10 A is the stereogram that the existing restraint parts of expression and card end the assembled state of spring, and Figure 10 B is the profile of this assembled state.

Embodiment

Below, describe embodiments of the present invention in detail.

Fig. 1 is the exploded perspective view of the embodiment of variable resistance, and Fig. 2 is the stereogram of the embodiment of variable resistance, and Fig. 3 is the profile of the embodiment of variable resistance.

Variable resistance will block locking mechanism A (Fig. 3) and variable resistance unit B as structural element, assemble by passing the rotating shaft 1 that is mounted between this card locking mechanism A and the variable resistance unit B.

The bearing 2 that is made of resin or metal is provided with through hole 2a in the central.In through hole 2a, insert rotating shaft 1.Bearing 2 is by roughly seat part 2b and the cylindrical portion 2c of cuboid constitute.Seat part 2b has: be used for the jut 9b of storage case 9 and tack 12 hole 2d, insert the jut 2e that card ends the hole 7c of the hole 6e of board 6 and torque board 7.Periphery at cylindrical portion 2c is formed with external screw thread, by this external screw thread being screwed into the internal thread of wanting the position fixed to arrange, variable resistance can be fixed.

Rotating shaft 1 is made of mutual three the different cylinders of diameter, is made by resin or metal.The cylinder of diameter minimum is that the part of minor diameter part 1a outer peripheral face is along axially cut.In this embodiment, be provided with the face that is parallel to each other in the position each other in 180 degree.After rotating shaft 1 inserted bearing 2, the diameter second little cylinder was that sliding part 1b slides in the side face generation of through hole 2a according to the rotation of rotating shaft 1.Position at the close minor diameter part 1a of sliding part 1b is provided with recess 1d.After rotating shaft 1 inserted bearing 2, circular parts for example embedded recess 1d by the C shape ring that metal wire forms.Thus, rotating shaft 1 does not come off from bearing 2.The cylinder of diameter maximum be knob 1c and minor diameter part 1a similarly, the part of its outer peripheral face is along axially cut.In this embodiment, be provided with the face that is parallel to each other in the position each other in 180 degree.Be equipped with for the operation knob (not shown) that variable resistance is rotated operation at knob 1c.

Fig. 4 A is the vertical view that card ends spring 5, and Fig. 4 B is the front view that card ends spring 5, and Fig. 4 C is the upward view that card ends spring 5.Card ends spring 5 and comprises: have press section 5c and through hole 5d and annulus 5a that can strain; Extension 5e from annulus 5a extension.The online L1 of annulus 5a place is bent, and online L2 place is bent a little to the direction opposite with the overbending direction at line L1 place.Be provided with projection in the part than the more close front end of line L2, this projection constitutes press section 5c.Annulus 5a has because of internal diameter and dwindles the broad 5b of portion that becomes broad.The 5b of this broadness portion is provided with two through hole 5d.Two through hole 5d are positioned at the position that forms the line symmetry with respect to the line that connects extension 5e and press section 5c.Like this, arrange symmetrically by through hole 5d is line, make balance good, and improve as the reliability of variable resistance.In this embodiment, extension 5e is crank-like from annulus 5a bending and forming.

Fig. 5 A is the vertical view of restraint parts 4, and Fig. 5 B is the front view of restraint parts 4, and Fig. 5 C is the upward view of restraint parts 4, and Fig. 5 D is the left view of restraint parts 4.Restraint parts 4 for example are shaped by die cast metal or metal machine cut method.Central authorities at discoideus matrix 4a have formed axial region 4b outstandingly.Central authorities at axial region 4b are formed with the through hole 4c corresponding with the minor diameter part 1a shape of rotating shaft 1.Being provided with mutually at the upper surface of axial region 4b, two relative arc-shaped parts are linkage portion 4i.On the side plate face of matrix 4a and around axial region 4b, be formed with circular-arc location division 4d highlightedly.In addition, on the above-mentioned side plate face of matrix 4a, be provided with two the jut 4gs corresponding with two through hole 5d that block spring 5 only.The diameter of the jut 4g of cylindrical shape is slightly less than the diameter of through hole 5d.Matrix 4a is provided with the roughly rectangular opening 4e that extends through another lateral plates from this side plate face.And, be formed with the press section 4f that extends along the length direction of opening 4e highlightedly with opening 4e adjacency.

Fig. 6 A represents to block the stereogram of the state behind the

only spring

5 and 4 combinations of restraint parts, and Fig. 6 B represents the profile of this assembled state.Two jut 4g of restraint parts 4 insert the through hole 5d that card ends spring 5 respectively, and the extension 5e that card ends spring 5 engages with the opening 4e of restraint parts 4.Thus, spring 5 is combined restraint parts 4 with only blocking.The broad 5b of portion of spring 5 engages the both ends 4h of circular-arc location division 4d with only blocking respectively.Thus, be rotated location on the direction.Blocking the part that through hole 5d is set among the annulus 5a that ends spring 5 contacts with the matrix 4a of restraint parts 4.Card ends the part that is provided with press section 5c among the annulus 5a of spring 5 and contact with restraint parts 4, and it is positioned at the closer to press section 5c then gets over position away from matrix 4a surface.

Under the state that will block after ending

spring

5 and 4 combinations of restraint parts, the minor diameter part 1a of rotating shaft 1 inserts through hole 4c.

Card ends board 6 (Fig. 1) to have at central portion and is a bit larger tham the only opening 6a of spring 5 of card.Ending board 6 at card is provided with towards the outstanding protuberance 6b in the center of opening 6a.At protuberance 6b porose 6c is set.Card ends board 6 to have in four bights and fixingly use hole 6d, and has the slotted hole 6f that will install with two hole 6e connections.

Torque board 7 has the opening 7a of the axial region 4b that is a bit larger tham restraint parts 4 at central portion.And torque board 7 and card end board 6 similarly, have in four bights to fix and use hole 7b, and have the slotted hole 7d of two hole 7c connections that usefulness will be installed.

Card ends plate 13, and board 6 and 7 coincidences of torque board constitute by only block in the present embodiment.By making card end board 6 and 7 coincidences of torque board, protuberance 6b and hole 6c that card ends board 6 constitute jog at the side plate face of torque board 7.Card end plate 13 so that near a side of restraint parts 4 for card end board 6 towards covered jut 2e patchhole 6e and hole 7c by bearing 2.

End plate 13 at card and be laminated with the first variable resistance portion 14 and the second adjustable resistance device portion 15.

The first variable resistance portion 14 is made of the housing 9 of accommodating insulated substrate 9a (Fig. 3) and the rotary body 8 that is provided with sliding contact 8a.Be formed with collector body and resistive element at insulated substrate 9a.Determine that according to the anglec of rotation of rotary body 8 sliding contact 8a touches the position of collector body and resistive element, determine the resistance of the first variable resistance portion 14 according to this position.Be connected with leading-out terminal 9d on collector body and resistive element respectively, this leading-out terminal is drawn out to the outside.But detailed content reference example such as patent documentation 1 about the first variable resistance portion 14.The second adjustable resistance device portion 15 is made of housing 11 and rotary body 10, owing to have the structure identical with the first variable resistance portion 14, therefore omits explanation.

By metal material for example the tack 12 made of aluminium alloy be inserted into hole 11a (Fig. 3), the hole 9c that is formed on housing 9, the hole 7b that is formed on torque board 7 that are formed on housing 11 respectively, be formed on hole 6d, the hole 2d that is formed on bearing 2 that card ends board 6, afterwards for example by the front end of grommet from the fastening tack 12 of the lower surface of the seat part 2b of bearing 2.Thus, each parts of variable resistance are fixed.

Under the state of assembling variable resistance as mentioned above, card ends plate 13 and ends spring 5 with restraint parts 4 retaining wedges, and card ends spring 5 and ended by card that plate 13 is pressed and produce strain towards the direction that makes press section 5c near restraint parts 4.End pressing of 13 couples of press section 5c of plate by this card, card end spring 5 desire with restraint parts 4 be fulcrum (in this embodiment, ending the part that the line L1 (Fig. 4) of spring 5 contacts with restraint parts 4 and card is fulcrum) fascinate, but the press section 4f of restraint parts 4 suppresses card and ends spring 5 and fascinate by pushing down extension 5e.Like this, not the plastic deformation that utilizes based on hot riveting etc., but utilize press section 4f to push down extension 5e, suppress card and end fascinating of spring 5, thus, can increase the reaction force that card ends spring 5 compared to existing technology, and can increase card and end spring 5 and press the only power of plate 13 of card.Therefore, can realize ending sense than stronger in the past torque sense and card.

In the present embodiment, by making extension 5e at annulus 5a, extend from constituting 180 positions of spending each other with press section 5c, can further increase the reaction force that card ends spring 5.Why be like this because, extend from the positions that constitute 180 degree by making extension 5e, can increase as the distance between the position of the line L1 of fulcrum and the position that press section 4f pushes down extension 5e, therefore, press section 4f can suppress with littler power to fascinate.

If make rotating shaft 1 rotation, then along with this rotation, restraint parts 4 and the press section 5c that ended spring 5 by the card that restraint parts 4 keep end plate 13 rotation on one side of sliding at card on one side.By this slip, produce the torque sense.Be accompanied by rotation, produce card when card ends the jog of plate 13 and end sense when press section 5c crosses.That is, the press section 5c that runs into protuberance 6b drops on the outside of hole 6c or protuberance 6b, produces card during with 7 collisions of torque board and ends sense, click sound.

Along with the rotation of rotating shaft 1, restraint parts 4 and card end spring 5 and also rotate, and therefore, if rotate rotating shaft 1 lentamente, then press section 5c also slowly runs into protuberance 6b, slowly falls from protuberance 6b again.In the prior art, restraint parts P2 and card end spring P1 and are fixed together by the leading section generation plastic deformation that makes jut P2a, because ending the relative restraint parts of spring P1 P2, card can not move freely, therefore, when rotating rotating shaft lentamente, exist the click sound, the card that produce only to feel unclear situation.

In the present embodiment, the jut 4g of restraint parts 4 and the card through hole 5d that ends spring 5 does not fix by the plastic deformation of hot riveting etc.Just with jut 4g matched in clearance in through hole 5d, compared with prior art, card ends spring 5 and can freely move relative to restraint parts 4.Therefore, only engage to a certain extent with hole 6c by the press section 5c that makes card end spring 5, perhaps break away to a certain extent from the outside of protuberance 6b, card ends spring 5 and just can collide with torque board 7 alone.Therefore, even under the situation of rotating rotating shaft 1 lentamente, also can make the click sound of generation, card only feel clear.

Owing to do not make the jut 4g of restraint parts 4 produce the plastic deformation of hot riveting etc., therefore do not need the plastic deformation operation, can reduce manufacturing cost.And because the material of restraint parts 4 is not limited to the plastically deformable material, therefore, the leeway of the material of selection restraint parts 4 is big, also can form restraint parts 4 by metal injection molded (MIM).

Fig. 7 to Fig. 9 represents the variation that restraint parts 4 and card end spring 5.

Shown in Fig. 7 A and Fig. 7 B, can make extension 5e not bend to crank-like, but extend towards a direction from annulus 5a.In other words, extension 5e is extended.At this moment, the press section 4f of restraint parts 4 distance that is positioned at the identity distance matrix 4a upper surface that press section 4f contacts with extension 5e and the card corresponding position of thickness of ending spring 5.

In addition, shown in Fig. 8 A and Fig. 8 B, can make the upper surface of press section 4f be arranged to have surperficial identical height with matrix 4a.

And, shown in Fig. 9 A and Fig. 9 B, can make the bending of the not online L1 of annulus 5a place and make extension 5e not bend to crank-like, but extend towards a direction from annulus 5a.At this moment, press section 4f and extension 5e with respect to the axial vertical face tilt of rotating shaft 1 contact.To shown in Figure 8, the area that restraint parts 4 and card end the part that the annulus 5a of spring 5 contact is more big as Fig. 6, and only spring 5 is more stably by 4 maintenances of restraint parts for card, and therefore, fault is few, the reliability height.

According to card locking mechanism A of the present invention, can be applied to for example rotary switch of variable resistance electronic unit in addition.

The invention is not restricted to above-mentioned execution mode, can suitably change without departing from the spirit and scope of the present invention.

Claims

1. the card locking mechanism of an electronic unit comprises:

Card ends spring, and it has annulus that can strain and the extension that extends from described annulus, and this annulus has press section and through hole;

The restraint parts, it has the jut that inserts described through hole and the press section that engages with described extension, and the rotation of these restraint parts and rotating shaft together makes described card end the spring rotation;

Card ends plate, itself and described restraint the parts together described card of clamping end spring, press described press section towards described press section near the direction of described restraint parts, and have jog, when described jog is crossed along with the rotation of described rotating shaft in described press section, produce card and end sense;

The card locking mechanism of described electronic unit is characterised in that,

End plate to the pressing of described press section by described card, it is that fulcrum fascinates that described card ends that spring desires with described restraint parts, but described press section suppresses described card and ends fascinating of spring by pushing down described extension;

Described restraint parts also have the through hole that the minor diameter part shape with described rotating shaft forms accordingly, and the minor diameter part of described rotating shaft inserts the through hole of described restraint parts;

The extension that described card ends spring forms bendingly;

End on the different face of face that the annulus of spring contacts with described restraint parts with described card, the press section of described restraint parts is pushed down described extension;

Described card ends spring and contacts with described restraint parts in the part that comprises described through hole of described annulus, leaves from described restraint parts in the part that comprises described press section of described annulus.

2. the card locking mechanism of electronic unit as claimed in claim 1 is characterized in that,

Described card ends the extension of spring at described annulus, extends from constituting 180 positions of spending each other with described press section.

3. variable resistance comprises the card locking mechanism of claim 1 or 2 described electronic units.