CN207168246U

CN207168246U - A kind of backrest adjusts fastener

Info

Publication number: CN207168246U
Application number: CN201720236177.0U
Authority: CN
Inventors: 姚福来
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-13
Filing date: 2017-03-13
Publication date: 2018-04-03
Anticipated expiration: 2027-03-13

Abstract

The utility model discloses a kind of backrest to adjust fastener, adjusting knob and ribbon rotating disk are housed on housing, enclosure interior is provided with toothed disc, adjusting knob is intermeshed with ribbon rotating disk by engaging tooth, adjusting knob can also pull out and depart from ribbon rotating disk, then interacted between adjusting knob and toothed disc by alignment pin and latch back-moving spring so that alignment pin may only carry out unidirectional motion along toothed disc, separately have the knob back-moving spring of the adjusting knob reset of pull-out.In this kind of backrest regulation fastener, the retractable of ribbon is operated by same adjusting knob, and adjusting knob is arranged at the surface of housing, and is easiest to the position operated, will not be influenceed by backrest, so as to drastically increase the convenience of operation.

Description

A kind of backrest adjusts fastener

Technical field

Adjustable seat backrest is the utility model is related to, more particularly to a kind of regulation fastener for adjusting position of back.

Background technology

Backrest is the chair back on seat, and seat both can be fixed sofa or chair or automobile or child Seat on car.In the seat of such as perambulator, in order to adjust the angle of backrest or position, often on backrest set ribbon and Adjusting means, by adjusting means control ribbon length so that back lifting to realize the regulation of backrest angle.

Existing recliner structure is complex, is required for just smoothly completing backrest using bimanualness mostly Adjustment work, cause operating difficulties；Also some are and the backrest of one-hand operation, such as China Patent No. by adjusting fastener 2013207729704 utility model patent, the fastener of the patent are provided with two control sections, and one is to protrude from housing top surface Knob, lift backrest for controlling ribbon to pack up, another is the button for being hidden in housing side, for decontroling ribbon and Backrest is reduced, although the fastener of this structure can complete one-handed performance, the lifting of backrest is controlled respectively by two parts Still there is larger operation difficulty, and button is hidden in the side of housing again, the outside of the side often receives flexible back Block, extremely influence the convenience of operation.

Utility model content

Main purpose of the present utility model is to propose that a kind of backrest for completing ribbon folding and unfolding by single control parts is adjusted Save fastener, it is intended to improve the operation ease of regulation backrest.

To achieve the above object, the utility model proposes a kind of backrest to adjust fastener, including is fixedly installed in backrest On housing, adjusting knob is housed on housing, housing is fixedly installed in ribbon rotating disk built with rotatable ribbon rotating disk, ribbon On；The top of adjusting knob is the spiral cover protruded from outside housing, and middle part is through housing and may point to or moved backwards to backrest Cylinder, bottom for connection ribbon rotating disk swivel base, and cylinder drive swivel base when being displaced outwardly swivel base and ribbon rotating disk from being connected Middle disengaging；The groove consistent with its moving direction is provided with cylinder, fixed toothed disc is provided with housing, separately there are both ends to distinguish position Alignment pin in the gear teeth of groove and toothed disc, and the side of the toothed disc gear teeth to be spacing to alignment pin hook-shaped opposite side To be available for the inclined-plane or cambered surface of alignment pin movement；The button back-moving spring for driving knob to be moved towards backrest, and band are also equipped with housing The latch back-moving spring that dynamic alignment pin moves backwards to backrest.

On the one hand technical solutions of the utility model, adjusting knob connect ribbon rotating disk by the swivel base of bottom so that regulation Ribbon rotating disk is driven to rotate during knob, so that the ribbon concomitant rotation being connected on ribbon rotating disk and rolling；It is another Aspect interacts further through the gear teeth on the alignment pin in column recesses and housing toothed disc, because the side of the gear teeth can be to fixed Position pin is spacing so that adjusting knob may only rotate to opposite side, so that adjusting knob and ribbon rotating disk all may only be to A certain unilateral rotation simultaneously prevents its reversion.Before the rotation of adjusting knob opposed gear disk, alignment pin is by latch back-moving spring Act on and push against in the hook-shaped side of gear；Until when adjusting knob rotates, inclined-plane side of the alignment pin along gear is moved, Move simultaneously and along groove to latch back-moving spring direction, latch back-moving spring deforms upon；Pin to be positioned crosses the wheel Behind the inclined-plane of tooth, alignment pin receives the rebound effect of latch back-moving spring, is pressed into the hook-shaped interior of next gear teeth again；Continue to turn Dynamic adjusting knob, alignment pin are sequentially entered in the different gear teeth of toothed disc；Until adjusting knob stops operating, ribbon is also by ribbon Rotating disk, which shrinks, completes certain length, alignment pin i.e. by latch back-moving spring be pressed in the current gear teeth it is hook-shaped in, so as to knit The length locking of band, that is, the position of backrest is locked.When needing to discharge ribbon to adjust backrest, pull adjusting knob straight Swivel base to its bottom is mutually disengaged with ribbon rotating disk, and ribbon rotating disk is released from lock-out state, and ribbon can successfully be drawn Go out；Now, knob back-moving spring deforms upon, and after the completion for the treatment of that ribbon pulls out, operator decontrols adjusting knob, and adjusting knob exists Again ribbon rotating disk is pressed under the rebound effect of knob back-moving spring so that both reconnect.This kind of backrest adjusts fastener In, the retractable of ribbon is operated by same adjusting knob, and adjusting knob is arranged at the surface of housing, and most The position easily operated, will not be influenceed by backrest, so as to drastically increase the convenience of operation.

Preferably, housing includes the base being fixedly installed on backrest and the upper lid being installed on base, and toothed disc is set In the inside of upper lid.

Preferably, intermeshing engaging tooth is provided between adjusting knob bottom swivel base and ribbon rotating disk.

Preferably, the opposite side of ribbon rotating disk relative adjustment knob is provided with two fixed columns, and two fix with one end of ribbon It is installed in fixed column.

Preferably, latch back-moving spring is stage clip, and groove is provided with the axial direction on the cylinder and swivel base of adjusting knob, is inserted The both ends of pin back-moving spring push against on housing bottom and alignment pin respectively.

Preferably, knob back-moving spring is extension spring, and its both ends is individually fixed on adjusting knob and housing.

Further, the spiral cover of adjusting knob includes being connected to the lid at the top of cylinder, and is arranged at the top of lid Cock, the bottom of cock are located in lid and mutually spacing snap-in structure are provided between the top of lid, such as to inner side Or the boss of outside protrusion, bottom of the adjusting knob along swivel base are provided with the groove being communicated in cock, the two of knob back-moving spring End is connected in housing bottom and cock.

Brief description of the drawings

Fig. 1 is the structural representation that backrest adjusts fastener；

Fig. 2 is the installment state schematic diagram that backrest adjusts fastener；

Fig. 3 is the mounting structure schematic diagram of ribbon；

Fig. 4 is the structural representation that adjusting knob connects ribbon rotating disk.

Fig. 5 is that adjusting knob pulls out and departs from the structural representation of ribbon rotating disk.

Embodiment

Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the utility model is clearly and completely described, shown So, described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments.Based on this practicality Embodiment in new, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made Example is applied, belongs to the scope of the utility model protection.

It is to be appreciated that if directionality instruction is related in the utility model embodiment（Such as up, down, left, right, before and after, Top, bottom, inside and outside, vertical, transverse direction, longitudinal direction, counterclockwise, clockwise, circumferentially, radially, axially ...）, then directionality instruction only For explaining in a certain particular pose（As shown in drawings）Under relative position relation between each part, motion conditions etc., if When the particular pose changes, then directionality instruction also correspondingly changes therewith.

If in addition, relate to the description of " first " or " second " etc. in the utility model embodiment, should " first " or The description of person " second " etc. is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating The quantity of indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or implicitly include to Few this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be common with this area Technical staff can be implemented as basis, and this skill is will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of art scheme is not present, also not within the protection domain of the requires of the utility model.

The utility model proposes a kind of backrest to adjust fastener.

In the utility model embodiment, as shown in Fig. 1 to 5, backrest regulation fastener includes being fixedly installed in backrest On housing 1, adjusting knob 2 is housed on housing, housing is fixedly installed in ribbon built with rotatable ribbon rotating disk 3, ribbon 8 On rotating disk；The top of adjusting knob is the spiral cover 21 protruded from outside housing, and middle part is through housing and may point to or lean on backwards Carry on the back mobile cylinder 22, bottom is the swivel base 23 of connection ribbon rotating disk, and swivel base and ribbon when cylinder drives the swivel base to be displaced outwardly Rotating disk departs from from connection；The groove 24 consistent with its moving direction is provided with cylinder, fixed toothed disc 4 is provided with housing, The another alignment pin 5 for having both ends respectively in the gear teeth of groove and toothed disc, and the side of the toothed disc gear teeth is that alignment pin is limited The hook-shaped and opposite side of position is the inclined-plane or cambered surface for being available for alignment pin to move；It is also equipped with driving what knob moved towards backrest in housing Button back-moving spring 6, and the latch back-moving spring 7 for driving alignment pin to be moved backwards to backrest.

On the one hand adjusting knob connects ribbon rotating disk by the swivel base of bottom so that drive ribbon to turn when adjusting knob rotates Disk rotates, so that the ribbon concomitant rotation that is connected on ribbon rotating disk and rolling；On the other hand further through in column recesses Alignment pin and housing toothed disc on the gear teeth interact because the side of the gear teeth can be spacing to alignment pin so that regulation rotation Button may only rotate to opposite side, so that adjusting knob and ribbon rotating disk all to a certain unilateral rotation and may only prevent it Reversion.Before the rotation of adjusting knob opposed gear disk, alignment pin is pushed against hooking in gear by the effect of latch back-moving spring In shape side；Until adjusting knob rotate when, inclined-plane side of the alignment pin along gear is moved, at the same be also along groove to insert The movement of back-moving spring direction is sold, latch back-moving spring deforms upon；After pin to be positioned crosses the inclined-plane of the gear teeth, alignment pin receives The rebound effect of latch back-moving spring, the hook-shaped interior of next gear teeth is pressed into again；Adjusting knob is rotated further, alignment pin is successively In the gear teeth different into toothed disc；Until adjusting knob stops operating, ribbon is also shunk by ribbon rotating disk completes certain length Degree, alignment pin i.e. by latch back-moving spring be pressed in the current gear teeth it is hook-shaped in, so as to which the length of ribbon be locked, that is, will The position of backrest is locked.When needing to discharge ribbon to adjust backrest, adjusting knob is pulled until the swivel base and ribbon of its bottom Rotating disk is mutually disengaged, and ribbon rotating disk is released from lock-out state, and ribbon can be pulled out successfully；Now, knob back-moving spring Deform upon, after the completion for the treatment of that ribbon pulls out, operator decontrols adjusting knob, and adjusting knob is the screen resilience in knob back-moving spring Again ribbon rotating disk is pressed under effect so that both reconnect.In this kind of backrest regulation fastener, the retractable of ribbon passes through Same adjusting knob is operated, and adjusting knob is arranged at the surface of housing, and is easiest to the position operated, no It can be influenceed by backrest, so as to drastically increase the convenience of operation.

Described brace regulation fastener, toothed disc can be an independent part, be fixedly installed in housing, can also It is integrated with housing integral manufacturing.

Described brace regulation fastener, housing 1 include the base 11 being fixedly installed on backrest and are installed on base Upper lid 12, toothed disc 4 are arranged at the inside of lid.This kind simple in construction, stably.

Described adjusting knob 2, intermeshing engaging tooth is provided between its bottom swivel base 23 and ribbon rotating disk 3 so that Rotated with interfixing by engaging tooth between adjusting knob and ribbon rotating disk, and when adjusting knob pulls out or takes in Easily it can depart from or reconnect.The structural strength and bonding strength of this kind of structure are higher, working stability, accurate.Together Sample, it can also be provided that concave station and boss between adjusting knob swivel base and ribbon rotating disk, or the cooperation knots of other similar structures Structure.

Described ribbon rotating disk 3, the opposite side of its relative adjustment knob 2 are provided with two fixed columns 31, and two with the one of ribbon 8 End is fixedly installed in fixed column, when ribbon rotating disk rotates, drives two ribbons to take up on ribbon rotating disk.Relatively, ribbon It can also be provided that one, and will be fixed in the middle part of ribbon in the fixed column of ribbon rotating disk, ribbon can equally be received Put.

Described latch back-moving spring 7 can be extension spring, and the both ends of the extension spring push against in case top and positioning respectively Pins position is on the part between the cylinder 22 and toothed disc of adjusting knob 2, but in this kind of structure, latch back-moving spring is to alignment pin Active force be centering type effect, and latch back-moving spring and toothed disc may be contained within the same side of alignment pin, it is easy to so that Alignment pin departs from adjusting knob, in addition, latch back-moving spring also extremely takes enclosure interior space, causes equipment volume to increase. In view of this, it is preferable that latch back-moving spring 7 is arranged to stage clip, along axis side on the cylinder 22 and swivel base 23 of adjusting knob 2 To groove is provided with, the both ends of latch back-moving spring push against on housing bottom and alignment pin 5 respectively.So so that the work of fastener Make more to stablize, can also successfully reduce equipment volume.

Described knob back-moving spring 6 is extension spring, and its both ends is individually fixed on adjusting knob 2 and housing 1, when regulation is revolved Decontroled after button pull-up, adjusting knob resets under the rebound effect of knob back-moving spring.In addition, the spiral cover of adjusting knob 2 21 include being connected to the lids at the top of cylinder 22, and the cock 25 being arranged at the top of lid, the bottom of cock be located at lid it is interior and Mutually spacing snap-in structure, such as the boss to inner or outer side protrusion, adjusting knob edge are provided between the top of lid The bottom of swivel base 23 is provided with the groove being communicated in cock, and the both ends of knob back-moving spring 6 are connected to housing bottom and rotation In plug.This kind of structure is then easy to the dismounting of fastener and the replacing of spring, can easily be changed after relaxing of spring, so as to Improve the service life of fastener on the whole.

As shown in Fig. 2 backrest regulation fastener is installed on the back of backrest；As shown in figure 3, one end difference of two ribbons It is connected in the fixed column of ribbon rotating disk；As shown in figure 4, the swivel base of adjusting knob bottom is connected with ribbon rotating disk, alignment pin In the groove of adjusting knob cylinder, latch back-moving spring applies thrust to alignment pin and is locked the gear teeth with toothed disc It is interior；As shown in figure 5, adjusting knob is pulled out and is separated with ribbon rotating disk, ribbon rotating disk can be rotated voluntarily, and groove is moved to bottom It is in contact with alignment pin, alignment pin is still locked in the gear teeth by latch back-moving spring, and knob back-moving spring then revolves to regulation Button has the restoring force pulled it back.

Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, Every equivalent structure under utility model of the present utility model design, made using the utility model specification and accompanying drawing content Conversion, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.

Claims

1. a kind of backrest adjusts fastener, including the housing being fixedly installed on backrest, adjusting knob is housed on housing, it is special Sign is：Housing is fixedly installed on ribbon rotating disk built with rotatable ribbon rotating disk, ribbon；The top of adjusting knob is convex For the spiral cover outside housing, middle part be through housing and may point to or backwards to backrest movement cylinder, bottom for connection ribbon The swivel base of rotating disk, and cylinder drive swivel base when being displaced outwardly swivel base depart from ribbon rotating disk from being connected；Be provided with cylinder and its The consistent groove of moving direction, housing is interior to be provided with fixed toothed disc, separately has both ends respectively positioned at groove and the gear teeth of toothed disc Interior alignment pin, and the side of the toothed disc gear teeth is spacing to alignment pin hook-shaped and opposite side is be available for alignment pin to move oblique Face or cambered surface；The button back-moving spring for driving knob to be moved towards backrest is also equipped with housing, and drives alignment pin to be moved backwards to backrest Latch back-moving spring.

2. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：Housing includes the base being fixedly installed on backrest With the upper lid being installed on base, toothed disc is arranged at the inside of lid.

3. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：Between adjusting knob bottom swivel base and ribbon rotating disk Provided with intermeshing engaging tooth.

4. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：The opposite side of ribbon rotating disk relative adjustment knob is set There are two fixed columns, two are fixedly installed in fixed column with one end of ribbon.

5. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：The opposite side of ribbon rotating disk relative adjustment knob is set There is fixed column, have the ribbon described in one, be fixed in the middle part of ribbon in the fixed column of ribbon rotating disk.

6. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：Latch back-moving spring is extension spring, the both ends of extension spring Push against and be located in case top and alignment pin on the part between the cylinder and toothed disc of adjusting knob respectively.

7. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：Latch back-moving spring is stage clip, adjusting knob Groove is provided with cylinder and swivel base in the axial direction, the both ends of latch back-moving spring push against in housing bottom and alignment pin respectively On.

8. backrest as claimed in claim 2 adjusts fastener, it is characterised in that：Latch back-moving spring is stage clip, adjusting knob Groove is provided with cylinder and swivel base in the axial direction, the both ends of latch back-moving spring push against in housing base and alignment pin respectively On.

9. backrest as claimed in claim 1 adjusts fastener, it is characterised in that：Knob back-moving spring is extension spring, and its both ends is distinguished It is fixed on adjusting knob and housing.

10. the backrest regulation fastener as described in claim 1,3 or 9, it is characterised in that：The spiral cover of adjusting knob includes being connected to Lid and the cock being arranged at the top of lid at the top of cylinder, the bottom of cock is located in lid and set between the top of lid There is mutually spacing snap-in structure, bottom of the adjusting knob along swivel base is provided with the groove being communicated in cock, knob back-moving spring Both ends be connected in housing bottom and cock.