CN206324522U - A kind of Rotatable armrest component with latch fitting - Google Patents

Abstract

The utility model discloses a kind of Rotatable armrest component with latch fitting, including fulcrum bearing and the armrest body being rotatablely arranged in fulcrum bearing, armrest body is attached with fulcrum bearing by rotating shaft, the latch fitting of control armrest body rotation is provided with fulcrum bearing, the latch fitting includes the dead bolt that can be stretched into armrest body and the impeller being connected with dead bolt wedge shape.The utility model is attached by armrest body with the rotating shaft in fulcrum bearing, the rotation for alloing armrest body to carry out 360 degree, and by setting latch fitting in fulcrum bearing, dead bolt is set to stretch into armrest body, by being connected with impeller wedge shape so that impeller is when promoting, dead bolt can the side of stretching move up, so as to realize the control rotated to armrest body so that armrest body can realize stable positioning after rotating to an angle.

Description

A kind of Rotatable armrest component with latch fitting

Technical field

The utility model is related to a kind of handrail, especially relates to a kind of Rotatable armrest component with latch fitting.

Background technology

With the development of social economy, growth in the living standard, the people are to the pursuit of life also more and more higher, daily life In, in order to improve the comfort level of seat, the right and left of seat can all be provided with handrail, although existing in the prior art adjustable Handrail, but these adjustable armrest existing defects.

For example, disclose a kind of Multifunctional seat arm-rest in Chinese patent CN201208078Y, wherein the locating piece of bottom, Movable cassette holder slidably with rotation, top slide locating piece and rotating locating blocks and are connected by crossing check bolt, constitute One can left rotation and right rotation motion.But, in order to realize the positioning of handrail, locating piece, which is only capable of doing on fan-shaped recess, to be rotated Motion, result in handrail can only rotate in certain angle, it is impossible to 360 degree of rotations be realized, simultaneously as being not provided with The positioner of handrail rotation is controlled, causes handrail to realize stable positioning after the rotation of certain angle.

The content of the invention

The utility model aims to solve the problem that above-mentioned mentioned technical problem can both have been rotated there is provided a kind of with 360 degree, again can be with According to demand to the armrest assembly of armrest body stable position.

The utility model is realized by following technical scheme：A kind of Rotatable armrest component with latch fitting, its It is characterised by, including fulcrum bearing and the armrest body that is rotatablely arranged in fulcrum bearing, armrest body is entered with fulcrum bearing by rotating shaft Row connection, is provided with the latch fitting of control armrest body rotation in fulcrum bearing, the latch fitting include stretching into the dead bolt in armrest body with And the impeller being connected with dead bolt wedge shape.

Preferably, the impeller includes promoting dead bolt to stretch out the wedge-shaped part of motion and for promoting wedge towards armrest body direction The connecting portion that shape portion is vertically moved with the stretching direction of motion of dead bolt, the bottom of dead bolt is provided with the wedge shape being engaged with wedge-shaped part Face.

Preferably, set on the lid that the fulcrum bearing includes the box body of bottom opening and covered with box body bottom, box body The first through hole that the first groove and accommodating dead bolt for having accommodating impeller run through, the latch fitting also includes making dead bolt keep stretching into helping The stage clip of hand body, the two ends of stage clip are abutted with box body and connecting portion respectively.

Preferably, it is provided with the top of the second through hole that accommodating wedge-shaped part runs through, the second through hole and is provided with the dead bolt The lozenges；The bottom of the wedge-shaped part is additionally provided with chamfered section.

Preferably, one end of the rotating shaft is fixedly connected with the teeth groove elasticity being provided with a gear, armrest body with gear The brake component of crimping, brake component includes elastic blob of viscose and the wear-resistant block being located between elastic blob of viscose and gear.

Preferably, the armrest body includes the first plate and the second plate of mutual pairing, the first plate the second plate of direction The second groove of accommodating pinion rotation and the 3rd groove of accommodating brake component are provided with the end face of part.

Preferably, first plate is additionally provided with the chute set along the length direction of armrest body and is arranged in chute Sliding block, second groove, the 3rd groove and brake component may be contained within sliding block.

Preferably, the both sides of the sliding block are respectively arranged with Resilient cantilevered portion, and the both sides of the chute are provided with and bullet The detent of at least one that property cantilever portion is engaged.

Preferably, it is provided with the third through-hole that the end of accommodating rotating shaft is run through on first plate or the second plate.

Preferably, the chute two ends are also respectively provided with the limited block that limitation sliding block is slided.

Beneficial effect is：Compared with prior art, the utility model is connected by armrest body with the rotating shaft in fulcrum bearing Connect so that armrest body can carry out 360 degree of rotation, and by setting latch fitting in fulcrum bearing, dead bolt is stretched into armrest body It is interior, by with impeller wedge shape be connected so that impeller promotion when, dead bolt can the side of stretching move up, so as to realize The control rotated to armrest body so that armrest body can realize stable positioning after rotating to an angle.

Brief description of the drawings

Embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing, wherein：

Fig. 1 is the schematic diagram of the one of which embodiment of armrest assembly of the present utility model；

Fig. 2 is the decomposing schematic representation of Fig. 1 armrest assembly；

Fig. 3 is the dimensional structure diagram of the fulcrum bearing in Fig. 2；

Fig. 4 is that the fulcrum bearing in Fig. 3 opens the internal structure schematic diagram after lid；

Fig. 5 is the connection diagram of impeller in Fig. 4 and closing piece；

Fig. 6 is the schematic diagram of the box body in Fig. 4；

Fig. 7 is the schematic perspective view of the first plate in Fig. 2；

Fig. 8 is the schematic diagram of the first plate in Fig. 2 towards the end face of fulcrum bearing；

Fig. 9 is the sliding block schematic perspective view in Fig. 2；

Figure 10 is the assembling schematic diagram of the first plate in Fig. 2 and sliding block；

Figure 11 is the schematic perspective view of the gear in Fig. 2；

Figure 12 is the elastic blob of viscose schematic perspective view in Fig. 9.

Embodiment

As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, a kind of Rotatable armrest component with latch fitting, including fulcrum bearing 1 and can turn The armrest body 2 in fulcrum bearing 1 is arranged at dynamicly, and armrest body 2 is attached with fulcrum bearing 1 by rotating shaft 122, is set in fulcrum bearing 1 Be equipped with the latch fitting 9 that control armrest body 2 rotates, the latch fitting 9 include the dead bolt 93 that can stretch into armrest body 2 and with the wedge of dead bolt 93 The impeller 91 of shape connection, wherein, armrest body 2 is mainly used in the placement of arm, plays a part of support, fulcrum bearing 1 to arm Support is played a part of to armrest body 2, fulcrum bearing 1 is arranged to discoid, the contact of fulcrum bearing 1 and armrest body 2 can be caused Area is bigger, and then make it that the connection with armrest body 2 is more stablized, and certain armrest body 2 can also be arranged to other shapes, such as long Cube shape or other similar shapes.Armrest body 2 is attached by rotating shaft 122 with fulcrum bearing 1 so that armrest body 2 can enter The rotation that 360 degree of row, sets latch fitting 9 in fulcrum bearing 1, can realize what armrest body 2 was rotated by controlling the switch of latch fitting 9 Control, that is, when opening latch fitting 9, armrest body 2 can be rotated by applying certain moment of torsion, when closing latch fitting 9, armrest body 2 It is in the lock state, armrest body 2 can not be rotated, so as to realize stable positioning to armrest body 2.Latch fitting 9 includes stretching into Dead bolt 93 in armrest body 2 and the impeller 91 being connected with the wedge shape of dead bolt 93, can make dead bolt 93 by promoting impeller 91 Glided along lozenges, so that dead bolt 93 spins off out of armrest body 2, latch fitting 9 is in open mode, and armrest body 2 just may be used To be rotated by applying certain moment of torsion, under the open mode of latch fitting 9, the edge of dead bolt 93 can be made by pulling impeller 91 Lozenges lifting, so that dead bolt 93 is stretched into armrest body 2, latch fitting 9 is in the lock state, and armrest body 2 can not be rotated, Armrest body 2 is now in stable positioning states.

As shown in figure 5, impeller 91 can include the wedge-shaped part 911 for promoting dead bolt 93 to stretch out motion towards the direction of armrest body 2 With the connecting portion 912 for promoting wedge-shaped part 911 vertically to be moved with the stretching direction of motion of dead bolt 93, the bottom of dead bolt 93 is set There is the lozenges being engaged with wedge-shaped part 911, impeller 91 is provided with wedge-shaped part 911, can be by promoting and pulling connecting portion 912, dead bolt 93 is moved up and down along direction is stretched out, so as to realize the switching function of latch fitting 9, i.e., when application thrust promotes connection During portion 912, dead bolt 93 will be moved downward along lozenges on direction is stretched out, and dead bolt 93 stretches out from armrest body 2, latch fitting 9 In open mode, armrest body 2 can realize spinfunction, in the on-state, apply pulling force and pull connecting portion 912, dead bolt 93 Can upwards it be moved on direction is stretched out along lozenges, dead bolt 93 is stretched in armrest body 2, and latch fitting 9 will be in the lock state, Armrest body 2 can not be rotated, and armrest body 2 is now in stable positioning states, and the bottom of dead bolt 93 can be provided with and wedge The lozenges that shape portion 911 matches, so that the active area of dead bolt 93 and wedge-shaped part 911 is bigger, so that dead bolt 93 exists The motion stretched out on direction is more steady.

As shown in Figure 4 and Figure 6, the lid that fulcrum bearing 1 can include the box body 12 of bottom opening and be covered with the bottom of box body 12 The first through hole that the first groove 101 and accommodating dead bolt 93 of accommodating impeller 91 run through can be provided with body 11, box body 12 102, the setting of the box body 12 and lid 11 that mutually cover can facilitate and some components are set inside fulcrum bearing 1, make fulcrum bearing Space inside 1 is fully utilized, so that whole armrest assembly structure is compacter, setting second is recessed on box body 12 Groove 61, can limit the position of impeller 91, be allowed to arbitrarily to move, and when promoting impeller 91, can make promotion Part 91 is moved along along the length direction of the first groove 101, set first through hole 102 be in order to which the motion to dead bolt 93 is defined, Make it to stretch out direction along it to move, the latch fitting 9 also includes the stage clip for making dead bolt 93 keep stretching into armrest body 2 （92）, stage clip（92）Two ends abutted respectively with box body 12 and connecting portion 912, in stage clip（92）Do not have in the state of stress, lock Part 9 is in the lock state, when there is thrust impeller 91, and latch fitting 9 is in open mode, and armrest body 2 can be rotated, Now stage clip（92）In compressive state, when the positioning to be stablized to armrest body 2, when preventing it from rotating, it need to only withdraw The motive force acted on impeller 91, stage clip（92）Impeller 91 will be promoted along the opposite direction of motive force, work as stage clip （92）Original state is returned to, latch fitting 9 is in the lock state, i.e. stage clip（92）Serve the effect of returning device so that latch fitting 9 Need not apply active force to impeller 91 from open mode to lock-out state can also realize, more simple when in use, It is convenient.

As shown in figure 5, the second through hole 931 that accommodating wedge-shaped part 911 runs through can be provided with dead bolt 93, the second through hole 931 size is engaged with the width size of wedge-shaped part 911 so that the right and left when wedge-shaped part 911 is connected with the second through hole 931 Be not in too wide arc gap, the enough wedge-shaped parts 911 of height of the second through hole 931 pass through, so that promote wedge-shaped part 911 to move When, dead bolt 93 is more steady in the motion that it is stretched out on direction, and the top of the second through hole 931 can be provided with the lozenges, So make it that the contact area of dead bolt 93 and wedge-shaped part 911 is bigger, promotion of the impeller 91 to dead bolt 93 is more laborsaving, and motion is more Steadily, the bottom of wedge-shaped part 911 is also provided with chamfered section 913, so can both save material, and impeller 91 can be made again Wedge-shaped part 911 moved in the second through hole 931 it is more smooth.

As shown in Fig. 2, Figure 10, Figure 11 and Figure 11, one end of rotating shaft 122 can be fixedly connected with a gear 4, armrest body 2 Interior to be provided with the brake component 8 with the elastic compression joint of teeth groove 3 of gear 4, brake component 8 includes elastic blob of viscose 81 and is located in elasticity Wear-resistant block 82 between blob of viscose 81 and gear 4.Pass through the gear 4 being arranged in rotating shaft 122 and the braking being arranged on armrest body 2 The cooperation of part 8, realizes the regulation of the different rotary angle of armrest body 2, namely can as needed to armrest body 2 turned position Positioned.When needing adjustment 2 anglec of rotation of armrest body, apply certain moment of torsion to armrest body 2, with can twisted rotary shaft 122 axis carries out rotation, namely under normal conditions, armrest body 2 can carry out rotation in the horizontal plane.Brake component 8 is crimped onto During 3 bottom of teeth groove of gear 4, it is possible to achieve the positioning to armrest body 2, when needing rotary handle body 2, it is only necessary to armrest body 2 Apply a moment of torsion so that brake component 8 exits teeth groove 3 under the guide effect of the side wall of the teeth groove 3 of gear 4, when armrest body 2 after Continuous to rotate, brake component 8 can then enter in adjacent teeth groove 3, so as to can realize that the rotation to armrest body 2 is positioned.Elastic gum Wear-resistant block 82 is provided between block 81 and gear 4, it is to avoid when rotated, elastic blob of viscose 81 directly connects armrest body 2 with gear 4 Touch, reduce the abrasion of elastic blob of viscose 81, secondly, if elastic blob of viscose 81 is directly contacted in rotary course with gear 4, can make Elastic blob of viscose 81 receives extruding force and deformed upon, and very big resistance can be so produced to gear 4, rotates armrest body 2 required Moment of torsion increases, and wear-resistant block 82 is preferably to be made of the larger material of rigidity, such as steel, alloy, rigid plastics material.Using firm After the larger wear-resistant block 82 of property, when armrest body 2 is rotated, under the guide effect of the side wall of the teeth groove 3 of gear 4, make wear-resistant block 82 move to the direction of elastic blob of viscose 81, the elastic blob of viscose 81 of extruding, when armrest body 2 is rotated further to teeth groove 3 once, elastic gum Block 81 promotes wear-resistant block 82 to enter the bottom land of teeth groove 3, thus can realize the regulation to the anglec of rotation of armrest body 2.Can be by elastic gum Block 81 is set smaller than the width d2 of dorsad one end of gear 4 towards the width d1 of one end of gear 4.Because armrest body 2 rotates When, gear 4 has the extruding force of radial direction by 82 pairs of elastic blob of viscoses 81 of wear-resistant block, resistance to when armrest body 2 carries out anglec of rotation regulation Abrading block 82 with teeth groove 3 crimp that the positioning to armrest body 2 can be realized, during crimping, elastic blob of viscose 81 is by wear-resistant block 82 to tooth Wheel 4 applies and extruding force elastic force in opposite direction, so that armrest body 2 can not be rotated by original moment of torsion, realizes To the positioning action of armrest body 2, if elastic blob of viscose 81 is too small to the elastic force of gear 4, easily make the positioning of armrest body 2 unstable, The width of one end elastic blob of viscose 81 towards gear 4 is set smaller than the width of dorsad one end of gear 4 so that elastic blob of viscose 81 be squeezed again power effect when, one end of its dorsad gear 4, which can provide bigger screen resilience and give wear-resistant block 82, to be in contact One end so that wear-resistant block 82 has bigger active force to teeth groove 3 so that the positioning of armrest body 2 more stablize, elastic blob of viscose 81 the 4th groove 811 for having the accommodating wear-resistant block 82 in part can be set towards one end of gear 4.The setting of 4th groove 811 be for Make the contact area between wear-resistant block 82 and elastic blob of viscose 81 bigger, so that elastic blob of viscose 81 is made to the elasticity of wear-resistant block 82 It is firmly bigger, meanwhile, the contact area between wear-resistant block 82 and elastic blob of viscose 81 is bigger, during rotation, wear-resistant block 82 Also it is not easy to depart from elastic blob of viscose 81 in the extruding force by the radial direction of gear 4 and separates, makes the connection of the two more close, steady It is fixed.The material of elastic blob of viscose 81 can be silica gel, plastic cement or rubber.The material of the utility model elasticity blob of viscose 81 is preferably silica gel, Silica gel is wear-resisting, and elasticity is good, when armrest body 2 rotates, is difficult to be worn and torn by wear-resistant block 82, and can provide greatly elastic force, and Silica gel by external force in the case where being acted on, it is not easy to occurs permanent deformation.

As shown in Figure 2 and Figure 9, armrest body 2 can include the first plate 21 and the second plate 22 of mutual pairing, the first plate Part 21 is towards can be provided with the second groove 61 that accommodating gear 4 rotates and accommodating brake component 8 on the end face of the second plate 22 3rd groove 62, by the way that gear 4 and brake component 8 are arranged in the second groove 61 and the 3rd groove 62, it is to avoid it is unnecessary to take Can symmetrically it be set in installation space so that the setting of each part is compacter, reasonable in armrest assembly, the circumference of the second groove 61 Two the 3rd grooves 62 are put, correspondingly, two groups of brake components 8 is provided with the first plate 21, in 2 rotation of armrest body, symmetrically set Two brake components 8 put can make the stress of gear 4 more balanced, rotate more steady.

As shown in Figure 9 and Figure 10, the first plate 21 is also provided with the chute 5 along the length direction setting of armrest body 22, Sliding block 6 is provided with chute 5, the second groove 61, the 3rd groove 62 and brake component 8 may be contained within sliding block 6.In armrest body 2 Chute 5 is provided with length direction and sliding block 6 is set in chute 5, armrest body 2 is moved in chute 5, so that Armrest body 2 is realized the function of slip, the second groove 61 and the 3rd groove 62 are set on sliding block 6, and then gear 4 and system Moving part 8 is arranged in sliding block 6, makes gear 4 and brake component 8 not have to take the space in armrest body 2 in placement, and then to help The setting of each component is compacter, reasonable in hand body 2.

As shown in figure 8, the first plate 21 is towards can be provided with the groove 53 of strip on the end face of fulcrum bearing 1 so that When latch fitting 9 is in the lock state, dead bolt 93 can be stretched into groove 53, constituted clamping with armrest body 2, prevented it from being rotated, Groove 53 is strip, can cause latch fitting 9 in the state of locking, armrest body 2 can also enter line slip, and the length of groove 53 More than or equal to the sliding distance of armrest body 2, such armrest body 2 can make it that the sliding distance of armrest body 2 reaches maximum.Groove 53 Shrinkage pool shape can also be arranged to, shrinkage pool is engaged with the size of dead bolt 93, such setting can make it that latch fitting 9 is in locking shape During state, armrest body 2 can not enter line slip and rotation so that the more stable positioning of armrest body 2.

As shown in Fig. 3, Fig. 9 and Figure 12, box body 12 has protruded out assembled shaft platform 41, is provided with assembled shaft platform 41 is central axial Rotating shaft 122, the center of gear 4 has protruded out axle platform 121, and axle platform 121 is central axial to be provided with the pilot hole coordinated with rotating shaft 122 42, the second groove 161 is provided centrally with the mating holes 611 being engaged with axle platform 121.During installation, gear 4 is arranged on the second groove In 161, the insertion mating holes 611 of axle platform 121 completes the connection of gear 4 and sliding block 6, the insertion gear 44 of rotating shaft 122 of fulcrum bearing 1 Pilot hole 42 in, fulcrum bearing 1 is attached with gear 4, such connected mode facilitates the dismounting of each component, tooth will not be made Relatively rotated between wheel 4 and fulcrum bearing 1, meanwhile, armrest body 2 is rotated around axle platform 121, more steadily.

As shown in figures 7 and 9, the both sides of sliding block 6 can be respectively arranged with Resilient cantilevered portion 63, and the both sides of chute 5 can be with The detent 51 of at least one being engaged with Resilient cantilevered portion 63 is provided with, Resilient cantilevered portion 63 includes the side edge of sliding block 6 The projection protruded out on the side abutted against on the hanging pillar and hanging pillar that length direction is protruded out with detent 51, it is raised with positioning Groove 51 is engaged, when sliding block 6 is slided in chute 5, and the two side arms of chute 5 are curved by occurring hanging pillar raised extruding force Bent and produce elastic force, when sliding block 6 is moved to raised with the joint of detent 51, the elastic force that hanging pillar is produced makes raised recessed with positioning The flexible clamping of groove 51, now armrest body 2 is raised from fixed when the horizontal thrust of application makes hanging pillar bend gradually in positioning states Position the bottom of groove 51 along the wall of detent 51 skid off when, armrest body 2 can continue in chute 5 slide.The both sides of sliding block 6 with And the both sides of chute 5 set Resilient cantilevered portion 63 and detent 51 respectively, the stress equalization of the both sides of sliding block 6 can be caused, entered And allow slip of the armrest body 2 in chute 5 more steady, set multiple recessed in wavy positioning in the both sides of chute 5 Groove 51, can realize the regulation of many gears to armrest body 2 in sliding process, meanwhile, detent 51 is arranged to wavy, Sliding block 6 can be caused to be slided in chute 5 more smooth, smooth, so cause armrest body 2 relative to fulcrum bearing 1 slip more Plus it is smooth, smooth.

As shown in fig. 7, the end that accommodating rotating shaft 122 can be provided with the first plate 21 or the second plate 22 run through Three through holes 7, the effect of third through-hole 7 is to pass through armrest body 2 for the rotating shaft 122 of fulcrum bearing 1 so that the gear 4 in rotating shaft 122 Rotatably it is connected with armrest body 2, in order that armrest body 2 realizes the function of sliding relative to fulcrum bearing 1, third through-hole 7 can be with It is arranged to strip.The two ends of chute 5 can also be respectively arranged with limited block 52, and the two ends of sliding block 6 can be provided with electing fast phase as The recess of cooperation, limited block 52 can play spacing effect to the slip of sliding block 6, while buffering can also be played to sliding block 6 Effect, when sliding block 6 slide it is too fast, when the recess at the two ends of sliding block 6 collides with limited block 52, due to being used at the recess of sliding block 6 The setting of hollow out so that can be deformed upon at recess, with certain elasticity, so as to reduce the shock produced in collision process Power.

Above example is only not limited to illustrate the technical solution of the utility model, all without departing from this Any modification of utility model spirit and scope or equivalent, it all should cover the scope in technical solutions of the utility model It is interior.

Claims (10)

1. a kind of Rotatable armrest component with latch fitting, it is characterised in that including fulcrum bearing（1）Be rotatablely arranged at branch Bearing（1）On armrest body（2）, armrest body（2）With fulcrum bearing（1）Pass through rotating shaft（122）It is attached, fulcrum bearing（1）On set It is equipped with control armrest body（2）The latch fitting of rotation（9）, the latch fitting（9）Including armrest body can be stretched into（2）Interior dead bolt（93）And With dead bolt（93）The impeller of wedge shape connection（91）.

2. a kind of Rotatable armrest component with latch fitting according to claim 1, it is characterised in that the impeller （91）Including promoting dead bolt（93）Towards armrest body（2）The wedge-shaped part of motion is stretched out in direction（911）With for promoting wedge-shaped part（911） Vertically and dead bolt（93）The stretching direction of motion movement connecting portion（912）, dead bolt（93）Bottom be provided with and wedge-shaped part （911）The lozenges being engaged.

3. a kind of Rotatable armrest component with latch fitting according to claim 1, it is characterised in that the fulcrum bearing （1）Box body including bottom opening（12）With with box body（12）The lid that bottom is covered（11）, box body（12）On be provided with it is accommodating Impeller（91）The first groove（101）With accommodating dead bolt（93）The first through hole run through（102）, the latch fitting（9）Also include Make dead bolt（93）Armrest body is stretched into holding（2）Stage clip（92）, stage clip（92）Two ends respectively with box body（12）And connecting portion （912）Abut.

4. a kind of Rotatable armrest component with latch fitting according to claim 2, it is characterised in that the dead bolt（93） On be provided with accommodating wedge-shaped part（911）The second through hole run through（931）, the second through hole（931）Top be provided with the wedge shape Face；The wedge-shaped part（911）Bottom be additionally provided with chamfered section（913）.

5. a kind of Rotatable armrest component with latch fitting according to claim 1, it is characterised in that rotating shaft（122）'s One end is fixedly connected with a gear（4）, armrest body（2）Inside it is provided with and gear（4）Teeth groove（3）The brake component of elastic compression joint （8）, brake component（8）Including elastic blob of viscose（81）Be located in elastic blob of viscose（81）With gear（4）Between wear-resistant block（82）.

6. a kind of Rotatable armrest component with latch fitting according to claim 5, it is characterised in that armrest body（2）Bag Include the first plate of mutual pairing（21）With the second plate（22）, the first plate（21）Towards the second plate（22）End face on set It is equipped with accommodating gear（4）The second groove rotated（61）With accommodating brake component（8）The 3rd groove（62）.

7. a kind of Rotatable armrest component with latch fitting according to claim 6, it is characterised in that first plate （21）It is additionally provided with along armrest body（2）Length direction set chute（5）Be arranged at chute（5）Interior sliding block（6）, it is described Second groove（61）, the 3rd groove（62）And brake component（8）It may be contained within sliding block（6）On.

8. a kind of Rotatable armrest component with latch fitting according to claim 7, it is characterised in that the sliding block（6） Both sides be respectively arranged with Resilient cantilevered portion（63）, the chute（5）Both sides be provided with and Resilient cantilevered portion（63）Match The detent of at least one closed（51）.

9. a kind of Rotatable armrest component with latch fitting according to claim 6, it is characterised in that first plate （21）Or second plate（22）On be provided with accommodating rotating shaft（122）The third through-hole that runs through of end（7）.

10. a kind of Rotatable armrest component with latch fitting according to claim 7, it is characterised in that the chute（5） Two ends are also respectively provided with limitation sliding block（6）The limited block of slip（52）.