CN2567930Y - Pivot device for adjusting limiting point resistance - Google Patents

Abstract

The utility model relates to a pivot device for adjusting limiting point resistance, which comprises a first pivot joint unit, a second pivot joint unit pivotally engaged with the first pivot joint unit, and an adjustment unit, wherein, the adjustment unit is provided with an interference assembly and an adjusting assembly, at least an elastic arm is formed in the interference assembly, the adjusting assembly is at least formed with a resistance adjusting arm which can be contacted with the elastic arm, and the limiting point resistance can be regulated through selecting for the position of the resistance adjusting arm contacted with a free terminal of the elastic arm.

Description

The pivoting device of adjustable restriction point drag

(1) technical field

The utility model relates to a kind of pivoting device of adjustable restriction point drag.

(2) background technology

Fig. 1 and Fig. 2 illustrate a kind of traditional pivoting device.This pivoting device is to be applied in as on the electronic equipments such as notebook computer or LCD Panel, pivoting device includes one first assembly 5 and one second assembly 6, first assembly 5 can be connected on the LCD screen body (not shown), second assembly 6 then can be connected on the base (not shown), makes that the LCD screen body can be relative to rotating on base.

It is non-circular axial region 51 that first assembly 5 is provided with a section, one end of axial region 51 is formed with an external screw thread 511, second assembly 6 then has a upstanding wall 61, upstanding wall 61 is provided with the location hole 611 that an axis hole 610 and two that supplies axial region 51 to pass is positioned at axis hole 610 belows, and the lateral margin place of upstanding wall 61 is formed with a breach 612.In addition, pivoting device also includes one first limited part 7, one second limited part 8, several dish-shaped pads 91, a closure 92 and other friction shims 93 etc., wherein, first limited part 7 is a sheet, which is provided with a perforation 70 that supplies axial region 51 to pass, bore a hole that 70 belows establish that a guide groove 71 and is positioned at guide groove 71 belows and to the outstanding projection 72 of upstanding wall 61 directions, make projection 72 can snap in the corresponding location hole 611, and then first limited part 7 is combined with the upstanding wall 61 of second assembly 6 and can not produce and relatively move.And second limited part 8 also in the form of sheets, the center is provided with the trepanning 80 of the non-circular section shape of a cooperation axial region 51, second limited part 8 is linked on the axial region 51 can rotate with axial region 51, the lateral margin place, top of second limited part 8 also is provided with one to the stop section 81 that upstanding wall 61 directions of second assembly 6 are extended again, and lateral margin place in below also is provided with an interference part 82 to first limited part, 5 direction projections.Several dish-shaped pads 91 and friction shim 93 etc. also can be linked on the axial region 51, and the closure 92 that can be provided with a screw by inside is locked together in axial region 51 and is provided with on the end of external screw thread 511.

After whole mode as Fig. 1 makes up, in regular turn can be in the middle of first assembly 5 and the closure 92 with the upstanding wall 61 of second assembly 6, first limited part 7, second limited part 8, several dish-shaped pads 91 and other friction shims 93 are locked together in together, and it is fitted tightly on an axis direction, and has the effect that on axis direction stressed elastically deformable stores an elastic-restoring force because of dish-shaped pad 91, so sealed normal pressure that can apply in advance according to closure 92, having a fixing torsion when win assembly 5 and second assembly 6 are relatively rotated exists, simultaneously, the stop section 81 of second limited part 8 can be movable in the breach 612 of the upstanding wall 61 of second assembly 6, interference part 82 then just can be movable in the guide groove 71 of first limited part 7.

As Fig. 3, as electronic equipments such as LCD Panel when the normality user mode, first assembly 5 is often just looked on the elevation angle in sight at base relatively at adjustment LCD screen body relative to the angle of rotating at second assembly 6 and is adjusted, this restriction partly is to be decided by the movable within it distance in the interference part 82 of guide groove 71 tolerables second limited part 8 of first limited part 7, and interference part 82 can not exceed the space in the guide groove 71 usually, and this moment, first assembly 5 then was the sealed strength that is applied to closure 92 in advance relative to the torsion that rotates at second assembly 6.

But as shown in Figure 4, sometimes the purpose in order to transport, the LCD screen body must be folded into a smaller volume with base, therefore, first assembly 5 may produce significantly rotational angle at second assembly 6 relatively, and this moment, the restriction of rotational angle then allowed that by the breach on the upstanding wall 61 612 distance of stop section 81 activities of second limited part 8 realizes.But because that guide groove 71 allows that angle that first assembly 5 rotates is compared the angle that breach 612 allows that first assembly 5 rotates is smaller, therefore when first assembly 5 relatively when second assembly 6 turns to a certain angle, the interference part 82 of second limited part 8 will break away from the scope of guide groove 71 and contact the material of guide groove 71 sides, like this, interference part 82 will be subjected to the extruding of guide groove 71 side materials and further make several dish-shaped pads 91 be out of shape more and increase its elastic-restoring force, making win assembly 5 and second assembly 6 relatively rotate required torsion increases, therefore in the pivoting device practical operation, can be formed with two sections different rotation torsion performances, the torsion part that changes then is 82 just to break away from the scope of guide grooves 71 and contact the place of guide groove 71 periphery materials in the interference part, also become first assembly 5 herein relative to the restriction point when second assembly 6 rotates, the meaning promptly when first assembly 5 relatively when second assembly 6 turns to restriction point, the torsion that it must overcome restriction point is again increased could continue to relatively rotate again, when this kind design is applied on the LCD Panel, can guarantee that the screen body is only allowed and adjust the elevation angle when the normality user mode, and as can apply bigger strength during necessary situation during transportation screen body and base are folded.

Yet, with regard to above-mentioned pivoting device structure, because the normal pressure that elastic-restoring force caused that the source that two sections torsion that first assembly 5 is produced at second assembly 6 relatively show all comes comfortable closure 92 several dish-shaped pads 91 of compressing to be produced, therefore in the general operation if with first section less rotation torque value in the mode of adjusting closure 92 precharge pressures fixing after, rotation torque value for second section bigger promptly can't be adjusted, in addition, because of material behavior, the difference of tolerance in the assembling and material heat treatment process, even first section is rotated torque value and is adjusted under the situation of identical size, second section of each hinge device rotate torque value can be not identical and can't compensate yet, so for some product, may be necessary identical at the operational first section rotation torque value of normality, when but it had the second section rotation torque value that has nothing in common with each other, above-mentioned pivoting device will be because of too complicated on adjusting, difficulty and can't meet the demand of product fully.

(3) utility model content

The purpose of this utility model is to provide a kind of pivoting device of adjustable restriction point drag, and it has can adjust the drag of restriction point separately and make the section of winning torque value and second section torque value all can meet demand.

The pivoting device of adjustable restriction point drag of the present utility model, be characterized in: this pivoting device comprises one first hinged unit, one second hinged unit and an adjustment unit, makes pivoting device provide one first member and one second member to interconnect and form relatively turnable state.

First hinged unit is to be connected with first member, and it has a limited part, and limited part is formed with an adjacent depressed part and a protrusion at least.

Second hinged unit is to be connected with second member, and it is and can combines with being pivoted relative to each other with first hinged unit.

Adjustment unit has an interference piece and an adjustment part, interference piece is formed with at least one elastic arm, elastic arm has the free end of a support end and an elastically deformable, free end also is provided with the contact site of a butt limited part, adjustment part then is formed with at least one drag of the free end contact of elastic arm that supplies and adjusts arm, but drag is adjusted the free end that arm also has a stiff end and an elasticity off normal, and the drag that makes the free end of elastic arm of interference piece optionally be positioned at adjustment part is adjusted the stiff end of arm and arbitrary position of free end centre.

Adjustment unit and second hinged unit link and locking phase to when first hinged unit is rotated, the elastic arm of interference piece will rotate relative to limited part, when making the contact site of elastic arm move to protrusion by depressed part, contact site will be subjected to pushing of protrusion, and make elastic arm with the support end strain, and and then push drag and adjust arm and produce strain simultaneously with stiff end, take place to form the drag that has a restriction point when first hinged unit and second hinged unit relatively rotate, and adjust the position of arm by the free end of prior selection elastic arm contact drag, make elastic arm push drag and adjust the required strength difference of arm, and reach the size of adjusting the restriction point drag.

For further specifying the purpose of this utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 is a kind of three-dimensional exploded view of conventional pivotal device;

Fig. 2 is Fig. 1 pivoting device combination back outside drawing;

Part member corresponding relation schematic diagram when Fig. 3 is the use of Fig. 1 pivoting device normality illustrates that the interference part of one second limited part can be movable in the guide groove of one first limited part;

Fig. 4 is the part member corresponding relation schematic diagram of Fig. 1 pivoting device when further relatively rotating, and illustrates that the interference part of this second limited part breaks away from the guide groove of this first limited part;

Fig. 5 is the three-dimensional exploded view of a preferred embodiment of pivoting device of the present utility model;

Fig. 6 is a member outside drawing partly after the combination of this preferred embodiment;

Fig. 7 is this preferred embodiment normality part member schematic diagram when using, and the relative position relation of a limited part and an interference piece is described;

Fig. 8 is this preferred embodiment normality part member side schematic view when using, and illustrates that the drag of the elastic arm of depressed part, an interference piece of a limited part and an adjustment part adjusts the relative position relation of arm;

Fig. 9 is the part member schematic diagram of this preferred embodiment when further rotating, and the relative position relation of a limited part and an interference piece is described;

Figure 10 is the part member side schematic view of this preferred embodiment when further rotating, and the drag that the protrusion that this limited part is described is pushed the elastic arm of this interference piece and this adjustment part is adjusted the relative position relation behind the arm;

Figure 11 is the part member schematic diagram that second section torque value adjusted in this preferred embodiment, and the free end that this interference piece is described is positioned at the position away from the stiff end of this adjustment part;

Figure 12 is the part member schematic diagram that second section torque value adjusted in this preferred embodiment, and the free end that this interference piece is described is positioned at the position near the stiff end of this adjustment part.

(5) embodiment

Consult Fig. 5 and Fig. 6, a preferred embodiment of the pivoting device of adjustable restriction point drag of the present utility model is to comprise one first hinged unit 1, one second hinged unit 2, an adjustment unit 3 and a shim pack 4.Make pivoting device can be applicable to one first member (not shown, can as a LCD screen body) and one second member (not shown, can as a base) and interconnect and form relatively turnable state.

First hinged unit 1 has a body 10, body 10 is provided with some location holes 101, can with first member in the sealed mode of bolt and be connected, and the two side ends of body 10 each extend a sidewall 11 downwards, with a sidewall 11 wherein, which is provided with an axis hole 110, and contiguous axis hole 110 places are provided with two outwards outstanding projections 111 on the sidewall 11, and has in the form of sheets a limited part 12 in addition, limited part 12 is provided with the through hole 120 at a corresponding axis hole 110 places and the location hole 121 of two corresponding projections, 111 positions, and it is that centering ring is around several breach of arranging that limited part 12 then is provided with through hole 120 near the outer ledge place, location hole 121 by limited part 12 combines with the projection 111 of sidewall 11, make limited part 12 fit and be positioned on the one side of sidewall 11, and the gap position place of limited part 12 just can form a depressed part 122, all the other partly then form a protrusion 123 at depressed part 122 relatively.In addition, the edge of sidewall 11 also further is provided with the protuberance 13 of the opposite another side extension of limited part 12 place faces on one day.

Second hinged unit 2 has a upstanding wall 21 and one and upstanding wall 21 horizontal wall 22 of extending in vertical direction, horizontal wall 22 is provided with several screws 221, with so that second hinged unit 2 be locked together on second member, and being provided with one, upstanding wall 21 upper ends are the pivot 23 of standing shape to side surface direction, one end of pivot 23 is provided with an external screw thread 231, the closure 24 that can supply to be provided with screw in one screws togather, and also be provided with a noncircular cross section section 232 on the pivot 23, make pivot 23 be passed the axis hole 110 of first hinged unit 1 and the through hole 120 of limited part 12, the lateral margin place of upstanding wall 21 upper ends is formed with a groove 211 that is nick shaped, and it is movable within it that the position of groove 211 just can hold the protuberance 13 of first hinged unit 1.

Adjustment unit 3 has an interference piece 31 and an adjustment part 32 that contacts with interference piece 31 adjacent applyings of piece shape shape, the centre of interference piece 31 is provided with a trepanning 310 of section configuration that cooperates the noncircular cross section section 232 of pivot 23, utilize trepanning 310 can make interference piece 31 be linked on the noncircular cross section section 232 of pivot 23 and do not produce relative rotation with pivot 23, and be the center with trepanning 310, then be formed with the elastic arm 311 of two curved extensions at interference piece 31 peripheral regions, each elastic arm 311 all have an on-deformable support end 3111 and away from support end 3111 free end 3112 of elastically deformable, in addition, free end 3112 places also form the contact site 3113 of a curved standing shape with impact style towards side surface direction, make the corresponding side of contact site 3113 in order to butt limited part 12.And adjustment part 32 centre also are provided with a circular perforations 320 that supplies pivot 23 to pass, can rotate relative to pivot 23 when making adjustment part 32 be linked on the pivot 23, and adjustment part 32 and copy the kenel of interference piece 31 to be formed with two and adjust arm 321 for the drag of free end 3112 contacts of corresponding elastic arm 311, but make drag adjust the free end 3212 that arm 321 also has an on-deformable stiff end 3211 and an elasticity off normal, because interference piece 31 can not produce relative rotation with pivot 23, therefore when pivot 23 rotates an angle, can make the free end 3112 of elastic arm 311 of interference piece 31 can optionally contact drag relatively and adjust the middle arbitrary position of the stiff end 3211 of arm 321 and free end 3212 according to the angle of being rotated by adjustment part 32.

In addition, shim pack 4 includes several dish-shaped pad 41 and friction shims 42, make dish-shaped pad 41 and friction shim 42 optionally the position and can be linked on the pivot 23.

As Fig. 5 and shown in Figure 6, during combination, the pivot 23 of second hinged unit 2 penetrates the sidewall 11 of first hinged unit 1 in regular turn, behind the interference piece 31 and adjustment part 32 and several dish-shaped pads 41 and friction shim 42 of adjustment unit 3, have at pivot 23 on the end of external screw thread 231 with closure 24 with all members closely locking be one, and make dish-shaped pad 41 produce strains and store an elastic-restoring force as conventional approaches, to provide first hinged unit 1 to exist relative to when second hinged unit 2 is rotated, having a default torque value, simultaneously, the contact site 3113 of interference piece 31 can be positioned at depressed part 122 activities of limited part 12, and the protuberance 13 of first hinged unit 1 also will be positioned at the groove 211 on second hinged unit 2, by 211 pairs of restrictions of groove, make the hinged unit 1 of winning can be relative between one first extreme position and one second extreme position, rotating in second hinged unit 2 at protuberance 13.

With reference to figure 7 and Fig. 8, when normality is used, as adjusting the visual angle for a LCD screen body, the contact site 3113 of interference piece 31 is that the depressed part 122 interior activity spaces of limited product 12 limit, and making the hinged unit 1 of winning is to rotate relative to second hinged unit 2 with first section default torque value.

And as Fig. 9 and Figure 10, in the time will further making LCD screen body and base form folded state again, the limited part 12 of first hinged unit 1 will continue to relatively rotate with the elastic arm 311 that is positioned the interference piece 31 on the pivot 23, make the contact site 3113 of elastic arm 311 can relatively move to the position of protrusion 123 by depressed part 122, at this moment, cause because of shape and spatial configuration, contact site 3113 will be subjected to pushing of protrusion 123, make elastic arm 311 be crooked fulcrum strain with support end 3111, and and then push drag and adjust arm 321 and produce strain simultaneously for crooked fulcrum with stiff end 3211, when elastic arm 311 and drag are adjusted arm 321 distortion, elastic arm 311 oppositely is applied on the protrusion 123 of limited part 12 with the elastic-restoring force that drag adjustment arm 321 will have a resistance to deformation, make the user take place in the drag that makes first hinged unit 1 when second hinged unit 2 turns to a specific angle, can obviously experience a restriction point relatively, if continue to make first hinged unit 1 when second hinged unit 2 is rotated again, except must overcoming the first section torque value that is applied in advance when original closure 24 locks, also must overcome the normal pressure that is applied to when elastic arm 311 is adjusted arm 321 distortion with drag on the limited part 12, therefore make pivoting device be formed with second section bigger torque value.

And with reference to Figure 11 and Figure 12, because the free end 3112 of elastic arm 311 is optionally to contact drag to adjust the stiff end 3211 of arm 321 and the arbitrary position in the middle of the free end 3212, therefore if as Figure 12 when making the free end 3112 of elastic arm 311 be positioned at position near the stiff end 3211 of drag adjustment arm 321 in advance, adjust the contact point of arms 321 because of the free end 3112 contact drags of elastic arm 311 and adjust the stiff end 3211 of arm 321 apart from shorter with drag, be that elastic arm 311 is pushed drag and adjusted arm 321 to produce the arm of force of distortion shorter, so under the condition that elastic arm 311 deflections are maintained fixed, required strength will be bigger when desiring to make drag adjustment arm 321 to produce identical deflection, opposite executing in the normal pressure of limited part 12 is then relatively large, the increment that causes second section torque value to compare at first section torque value significantly improves, on the contrary, as Figure 11, when the contact point of adjusting arm 321 when the free end 3112 of elastic arm 311 and drag was adjusted the stiff end 3211 of arm 321 away from drag, then compare will be less at the increment of first section torque value for second section torque value.Like this, because of first section torque value and second section torque value of pivoting device is to be produced by different sources respectively, so the free end 3112 phase resistances of adjusting elastic arm 311 during by assembling are in advance adjusted the distance of the stiff end 3211 of arm 321, can be under the situation that does not influence first section torque value size, separately second section required torque value adjusted, can make things convenient for product more convenient and accurate on torsion is adjusted in relative rotation, in addition on the one hand, also can be because of part tolerance of being had in assembling, or the heat treatment of material own produces the difference on the characteristic, after first section torque value set, utilize the adjustment effect of above-mentioned adjustment unit 3 to compensate to second section torque value, make first section torque value and second section torque value of pivoting device all can reach requirement, to promote the easiness of product in the QC management and control.

Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.

Claims (7)

1. the pivoting device of an adjustable restriction point drag, provide one first member and one second member to interconnect and form relatively turnable state, this pivoting device comprise that first hinged unit that is connected with this first member, is connected with this second member and with second hinged unit and an adjustment unit that this first hinged unit combines pivotally, it is characterized in that:

This first hinged unit has a limited part, and this limited part is formed with an adjacent depressed part and a protrusion at least;

This adjustment unit has an interference piece and an adjustment part, this interference piece is formed with at least one elastic arm, this elastic arm has the free end of a support end and an elastically deformable, this free end is provided with the contact site of this limited part of butt, this adjustment part then is formed with the drag of the free end contact of at least one this elastic arm of confession and adjusts arm, but this drag is adjusted the free end that arm also has a stiff end and an elasticity off normal, makes the alternative status of free end of elastic arm of this interference piece adjust the stiff end of arm and arbitrary position of free end centre in the drag of this adjustment part.

2, the pivoting device of adjustable restriction point drag as claimed in claim 1 is characterized in that:

This first hinged unit also has a protuberance, and this second hinged unit then has holds the groove that this protuberance moves within it.

3, the pivoting device of adjustable restriction point drag as claimed in claim 1 is characterized in that:

This limited part is a lamellar body, and this lamellar body has at least one breach, and this indentation, there forms this depressed part, and this sheet position then forms this protrusion relatively in the adjacent part of this indentation, there.

4, the pivoting device of adjustable restriction point drag as claimed in claim 1 is characterized in that:

This first hinged unit also has an axis hole, this second hinged unit then has the closure that a pivot and is locked together in this pivot end, make this pivot pass this axis hole, this first articulated part, this second articulated part and the locking of this adjusting device are located by this closure also for this adjusting device fit.

5, the pivoting device of adjustable restriction point drag as claimed in claim 4 is characterized in that:

Further be arranged with several dish-shaped pads on this pivot, make this closure locking back apply a packing strength this dish pad.

6, the pivoting device of adjustable restriction point drag as claimed in claim 4 is characterized in that:

This pivot has a noncircular cross section section, the interference piece of this adjusting device then has the trepanning of this noncircular cross section section of cooperation, this interference piece is linked on the noncircular cross section section of this pivot and rotates synchronously with this pivot, this adjustment part also has the perforation that can pass for this pivot, contacts with this interference piece after making this adjustment part be inserted in this pivot.

7, the pivoting device of adjustable restriction point drag as claimed in claim 1 is characterized in that:

The elastic arm of this interference piece is to be the curved extension in center with this pivot axis, and the drag of this adjustment part to adjust arm also be to be the curved extension in center with this pivot axis.

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