CN218651006U - Backrest armrest rotating structure of reclining chair - Google Patents

Abstract

The utility model provides a backrest handrail rotating structure of a reclining chair, which comprises a handrail component and a backrest component; the lower part of the chair back component is rotationally connected with the lower part of the armrest component; an angle adjusting mechanism is arranged above the rotary connection part of the armrest part and the chair back part; the angle adjusting mechanism comprises a guide sleeve arranged on the armrest part, an arc-shaped guide seat correspondingly arranged on the chair back part and a locking control assembly; the guide seat is in sliding insertion fit in the guide sleeve, and the chair back component rotates relative to the armrest component so that the guide seat slides relative to the guide sleeve; the locking control assembly comprises an adjusting switch exposed outside the guide sleeve, and the adjusting switch can adjust the guide seat to be locked and unlocked relative to the guide sleeve in a sliding mode. The chair back component can realize the function of leaning and lying of the chair back component only by connecting and matching with the armrest component, the structure is simple, and the cost is reduced.

Description

Backrest armrest rotating structure of reclining chair

Technical Field

The utility model relates to the field of seats, in particular to a backrest handrail rotating structure of a reclining chair.

Background

The chairs in the market at present have various structures, wherein the reclining chair is a chair with an adjustable chair back angle, and is favored by more and more consumers in a comfortable posture; the chair back of the existing general reclining chair mainly depends on a tray at the bottom of the chair seat, and the lower end of the chair back is rotationally connected with the tray; the functions of lying down the chair back and adjusting the inclination angle of the chair back are realized through the positioning pin, the positioning hole and the torsion spring in the tray.

However, the seat equipped with the tray is usually higher in manufacturing cost; due to cost, not all chairs have a tray structure; even if some seats are provided with trays, the function of the trays is only to realize the height adjustment of the seats, but the lying function of the chair back can not be realized. Most simple chairs have a backrest directly connected to a seat, so that the chair needs to be designed to have a reclining function. Moreover, the chair back can rotate through the tray, and the rotation point of the chair back is positioned below the gravity center of a user; the distance between the backrest and the seat plate is increased in the process of lying down, so that the clothes are rubbed up, and the use experience is poor.

In view of the above problems, there is a need for a reclining chair with simple structure, low cost and comfortable use.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a backrest handrail rotating structure of a reclining chair; the chair back component is rotationally connected with the armrest component; an angle adjusting mechanism for rotationally locking and unlocking the chair back component is also arranged between the chair back component and the chair back component; the chair back component can realize the function of leaning and lying of the chair back component only by connecting and matching with the armrest component, the structure is simple, and the cost is reduced.

The technical scheme of the utility model is realized like this:

a backrest armrest rotating structure of a reclining chair comprises an armrest part and a chair back part; the lower part of the chair back component is rotationally connected with the lower part of the armrest component; an angle adjusting mechanism is arranged above the rotary connection part of the armrest part and the chair back part; the angle adjusting mechanism comprises a guide sleeve arranged on the armrest part, an arc-shaped guide seat correspondingly arranged on the chair back part and a locking control assembly; a movable groove is arranged in the guide sleeve, the guide seat is in sliding insertion fit in the movable groove, and the chair back component rotates relative to the armrest component so that the guide seat slides in the movable groove along an arc-shaped track; the locking control assembly comprises a locking pin horizontally penetrating through the guide sleeve, a plurality of lock holes arranged on the guide seat and an adjusting switch; the adjustment switch is configured to be able to control the movement of the lock pin in the axial direction thereof to insert the lock pin into any one of the plurality of lock holes.

Preferably, the armrest component comprises a longitudinal support rod, an armrest panel arranged at the upper end of the support rod and an armrest fixing part which extends from the bottom end of the support rod and is connected with the seat; the guide sleeve extends backwards from the upper end of the support rod, and the guide seat is correspondingly arranged on the chair back component and extends forwards.

Preferably, arc-shaped sliding grooves are respectively concavely arranged on the end surfaces of the two sides of the guide seat; the guide sleeve is arc-shaped, and arc-shaped sliding strips are correspondingly arranged on two side walls in the guide sleeve respectively; the guide seat is inserted in the guide sleeve to enable the sliding strip to be embedded in the sliding groove in a sliding mode. So that the guide seat and the guide sleeve can slide smoothly and the clearance is eliminated.

Preferably, the guide seat is internally provided with a metal locking sheet, and the end surface of the guide seat is provided with a sliding groove so that the locking sheet is exposed outside; the locking hole is provided on the exposed portion of the metal piece. The lockhole is arranged on the metal locking piece, so that the structure is stable.

Preferably, an arc-shaped guide groove is further provided on the exposed portion of the locking piece; the lock holes are arranged on the lock piece at intervals along the path of the guide groove, and the diameter of each lock hole is larger than the height of the guide groove; the end part of the locking pin is provided with adjacent clamping columns and a guide column with the diameter smaller than that of the clamping columns, and the clamping columns are configured to be capable of being in clamping fit with the locking holes; the guide post is configured to be capable of being in sliding fit in the guide groove; in the locking state, the clamping column is clamped in the lock hole; under the unlocking state, the action regulating switch controls the locking pin to transversely move, so that the clamping column exits from the lock hole and the guide column is positioned in the guide groove. The sliding seat can be locked or unlocked by controlling the locking pin to move horizontally through the adjusting switch, and the adjusting operation is convenient; and set up sliding fit's guide way and guide pillar in addition for under the unblock, make the guide holder slide further steady smooth and easy.

Preferably, the adjusting switch is a knob exposed out of the guide sleeve, and the knob is fixedly connected with the end part of the locking pin; the locking control assembly also comprises a knob matching seat arranged at the root part of the guide sleeve; the locking pin is slidably arranged in the knob matching seat in a penetrating way; the knob is matched with the knob matching seat in a pushing and abutting mode, a push block extending towards the knob matching seat is arranged on the knob, and an arc-shaped inclined plane matched with the push block in a pushing and abutting mode is correspondingly arranged in the knob matching seat; the knob rotates relative to the knob matching seat to enable the push block to move along the arc-shaped inclined plane, and the knob simultaneously moves horizontally relative to the knob matching seat. Then the knob is rotated to control the locking pin to horizontally move in the guide groove.

Preferably, the locking pin is provided with a stop ring, a return spring is arranged between the stop ring and the knob matching seat, the return spring is sleeved on the locking pin, and the return spring is configured to enable the locking pin to always have the tendency of transversely moving towards the inner part of the guide sleeve to enable the clamping column to be clamped with the locking hole. So that the knob can be stably maintained in the locked state.

Preferably, an elastic part is arranged between the guide sleeve and the guide seat; the elastic piece is arranged in the guide sleeve, one section of the elastic piece is fixedly connected with the guide sleeve, and the other end of the elastic piece is fixedly connected with the guide seat.

Preferably, the elastic piece is arranged below the root of the guide sleeve; and a notch for avoiding the elastic piece is arranged at the lower part of the front end of the guide seat.

Preferably, a rotation limiting structure is arranged between the lower part of the chair back component and the lower part of the armrest component, and the rotation limiting structure comprises a rotation lug which is arranged on the chair back component and protrudes outwards and a rotation groove which is correspondingly arranged at the bottom of the supporting rod; the rotating lug is provided with an arc-shaped rotating part and a limiting bulge protruding outwards; the rotating groove is provided with an arc groove which is in rotating fit with the arc rotating part and a limiting groove which is used for limiting fit with the limiting protrusion. The rotating lug is embedded in the rotating groove, so that the chair back component can rotate relative to the armrest component; and meanwhile, the limiting groove plays a limiting fit with the limiting protrusion, so that the structure is stable. The rotating connection part of the chair back part and the armrest part is positioned at the rear part of the chair seat, so that the rotating point is close to the gravity center position of a human body sitting on the chair seat, and the back rubbing feeling can be eliminated.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the backrest handrail rotating structure of the reclining chair of the utility model connects the lower part of the backrest part with the lower part of the handrail part in a rotating way; an angle adjusting mechanism is further arranged above the rotating connection point, so that the chair back component and the armrest component are in sliding fit through the guide seat and the guide sleeve; then, the rotation locking and unlocking of the chair back component can be controlled only by rotating the knob exposed out of the guide sleeve; the chair back component can realize the function of leaning and lying of the chair back component only by connecting and matching with the armrest component, the structure is simple, and the cost is reduced. Compared with the deck chair structure which connects the lower end of the chair back to the chair seat tray in the prior art, the structure is simplified undoubtedly, and the cost is reduced; and the adjustment mode of the chair back component is simpler.

In addition, the rotating points of the chair back component and the armrest component are closer to the gravity center of the human body sitting on the chair seat, so that the back rubbing feeling can be further eliminated.

In addition, the lower parts of the chair back component and the armrest component are matched with the rotating groove through the rotating lug to realize rotation; the limiting protrusion and the limiting groove are used for limiting; thereby the chair back component can be rotated stably. And secondly, only a metal locking piece is arranged in the guide seat, and the locking piece and the locking pin are used for locking, so that the structure is stable. Thereby ensuring the structural stability of the chair back component.

Drawings

Fig. 1 is a schematic perspective view illustrating a connection between a backrest member and an armrest member according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of the rotation of the backrest part relative to the armrest part according to the embodiment of the present invention;

fig. 3 is a schematic perspective view of the rotation lug rotatably fitted in the rotation groove according to the embodiment of the present invention;

fig. 4 is a schematic perspective view of the chair back component and the chair seat component of the embodiment of the present invention;

fig. 5 is a cross-sectional view of the guide holder fitted in the guide sleeve in the embodiment of the present invention;

fig. 6 is a schematic perspective view of the guide base according to the embodiment of the present invention;

fig. 7 is a schematic perspective view of the inner part of the guide sleeve according to the embodiment of the present invention;

FIG. 8 is a schematic perspective view of the guide post and the guide groove of the present invention;

fig. 9 is a schematic perspective view of the embodiment of the present invention showing the engagement between the locking post and the locking hole;

fig. 10 is a schematic perspective view illustrating the connection between the knob and the locking pin according to the embodiment of the present invention;

fig. 11 is a schematic perspective view illustrating the engagement between the knob and the knob engaging seat according to the embodiment of the present invention;

fig. 12 is a cross-sectional view of the knob and the locking pin engaged with the knob engagement seat according to the embodiment of the present invention.

The figures are numbered: an armrest member 1; a support bar 101; an arm panel 102; a handrail fixing portion 103; a seatback member 2; a backside lever 201; rotating the projection 3; an arc-shaped rotating portion 3a; a limit protrusion 3b; an arc-shaped groove 4a; a limit groove 4b; a guide sleeve 5; a guide seat 6; a locking piece 6a; a sliding groove 7; a slide bar 8; a guide groove 9; a lock hole 10; a knob 11; a locking pin 12; a knob fitting seat 13; the clamp column 12a; a guide seat 12b; a push block 14; an arc-shaped inclined plane 15; a retainer ring 16; a return spring 17; an elastic member 18; a notch 19.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-12, the present invention provides a backrest armrest turning structure of a reclining chair; comprises an armrest component 1 and a chair back component 2; wherein, the lower part of the chair back component 2 is rotationally connected with the lower part of the armrest component 1, so that the chair back component 2 can be inclined and laid relative to the armrest component 1; and an angle adjusting mechanism is further arranged above the rotary connection part of the armrest component 1 and the chair back component 2, and the chair back component 2 can be further locked or unlocked in a rotary mode through the angle adjusting mechanism.

As shown in fig. 1 to 4, the armrest member 1 includes a longitudinal support rod 101, an armrest panel 102 disposed at an upper end of the support rod 101, and an armrest fixing portion 103 extending from a bottom end of the support rod 101 in a downward inclined manner and connected to a seat. The chair back component 2 comprises back side rods 201 positioned at two sides, and a rotation limiting structure is arranged between the bottoms of the back side rods 201 and the bottoms of the supporting rods 101; the rotation limiting structure comprises a rotation bump 3 which is arranged on the back side rod 201 and protrudes outwards and a rotation groove 4 which is correspondingly concave in the support rod 101. The rotating lug 3 is provided with an arc-shaped rotating part 3a and a limiting bulge 3b which protrudes outwards; correspondingly, the rotating groove 4 is provided with an arc-shaped groove 4a which is in rotating fit with the arc-shaped rotating part 3a and a limiting groove 4b which is used for limiting fit with the limiting bulge 3 b. The rotating lug 3 is embedded in the rotating groove 4, so that the arc-shaped rotating part 3a is in rotating fit with the arc-shaped groove 4, and the chair back component 2 can rotate relative to the armrest component 1; and meanwhile, the limiting groove 4b is used for limiting and matching the limiting protrusion 3, so that the rotation angle of the chair back component 2 can be limited. A rotation limiting structure is arranged between each of two sides of the chair back component 2 and the corresponding armrest component 1, so that the rotation structure of the chair back component 2 is stable. As shown in fig. 1 and 2, the rotation connection position of the chair back component 2 and the armrest component 1 is positioned at the rear of the chair seat, so that the rotation point is close to the gravity center position of the human body sitting on the chair seat, and the back rubbing feeling can be eliminated.

As shown in fig. 1, 2, 4-10, the angle adjusting mechanism includes an arc-shaped guide sleeve 5 disposed on the armrest member 1, an arc-shaped guide seat 6 correspondingly disposed on the seatback member 2, and a lock control assembly. Specifically, the guide sleeve 5 is in sliding insertion fit with the guide seat 6, the guide sleeve 5 extends backwards from the upper end of the support rod 101, the guide seat 6 is correspondingly arranged on the back side rod 201 and extends forwards, the guide sleeve 5 is hollowed to form a movable groove, and the guide seat 6 is inserted in the movable groove; as shown in fig. 6, arc-shaped sliding grooves 7 are respectively concavely formed on the end surfaces of both sides of the guide seat 6, and arc-shaped sliding strips 8 are respectively correspondingly formed on the two side walls inside the guide sleeve 5; the guide seat 6 is inserted into the guide sleeve 5, and the sliding strip 8 can be just embedded into the sliding groove 7 in a sliding manner; after the guide seat 6 and the guide sleeve 5 are inserted in a sliding manner, the gap is eliminated, and the guide seat and the guide sleeve slide smoothly. In addition, a metal locking piece 6a is arranged in the guide seat 6, and the guide seat 6 just exposes the locking piece 6a out by arranging sliding grooves 7 at two ends; an arc-shaped guide groove 9 is provided in the exposed portion of the locking piece 6a, and at least two locking holes 10 having a diameter larger than the height of the guide groove 9 are provided in the guide groove 9 at intervals along the path of the guide groove 9.

As shown in fig. 4-12, the locking control assembly includes an adjustment switch exposed at a side portion of the armrest member 1, the adjustment switch being a knob 11; the guide sleeve also comprises a knob matching seat 13 arranged at the root part of the guide sleeve 5 and a metal locking pin 12 which is fixedly connected with the knob 11 and horizontally penetrates through the guide groove 9; specifically, the method comprises the following steps: the end part of the locking pin 12 is provided with a left adjacent clamping column 12a, a right adjacent clamping column 12a and a guide column 12b with the diameter smaller than that of the clamping column 12a, and the clamping column 12a can be just in clamping fit with the locking hole 10; the guide post 12b can be in sliding fit in the guide groove 9; as shown in fig. 12, the end of the guide post 12b is inserted into the slide bar 8; so that the locking pin 12 can be held in a stable position in the horizontal direction. The locking pin 12 can be adjusted to horizontally move in the guide groove 9 by rotating the knob 11, the knob matching seat 13 is connected and fixed at the side end of the handrail component 1, and the locking pin 12 is slidably arranged in the knob matching seat 13 in a penetrating way; and the knob 11 is pushed against and matched with the knob matching seat 13, which specifically means that: as shown in fig. 11, a push block 14 extending toward a knob fitting seat 13 is provided on the knob 11, and an arc-shaped inclined surface 15 in abutting engagement with the push block 14 is provided in the knob fitting seat 13; the push block 14 moves along the arc-shaped inclined plane 15 by the action of the knob 11 rotating relative to the knob matching seat 13, so that the knob 11 moves horizontally relative to the knob matching seat 13; and the locking pin 12 is fixedly connected with the knob 11, and then the locking pin 12 can be controlled to horizontally move in the guide groove 9 by rotating the knob 11. That is, as shown in fig. 8, when the control knob 11 makes the guide rod 12b located in the guide groove 9, the guide rod 12b can move along the guide groove 9, so that the guide seat 6 can slide in the guide sleeve 5 at this time, and the backrest component 2 can rotate relative to the armrest component 1; and the guide rod 12b can also play a role in guiding so that the guide seat 6 can slide smoothly. When the control knob 11 drives the locking pin 12 to move laterally to make the locking post 12a locked with the locking hole 10, the locking pin 12 locks the guide seat 6 to rotationally lock the backrest 2 and the armrest 1, as shown in fig. 9.

As shown in fig. 8-12, the locking pin 12 is provided with a stop ring 16, a return spring 17 is provided between the stop ring 16 and the knob engaging seat 13, the return spring 17 is sleeved on the locking pin 12, and the return spring 17 is configured to make the locking pin 12 always have a tendency of moving laterally towards the interior of the guide sleeve 5 to make the locking pin 12a engaged with the locking hole 10; so that the knob 11 can be stably held in the locked state.

As shown in fig. 5 and 6, an elastic member 18 is further disposed between the guide sleeve 5 and the guide seat 6; the elastic piece 18 is arranged below the inner part of the guide sleeve 5, the elastic piece 18 is a spring with drag hooks at two ends, and one section of the elastic piece 18 is fixedly connected with the guide sleeve 5; the lower part of the front end of the guide seat 6 is provided with a notch 19 for avoiding the elastic part 18, so that the guide seat 6 cannot interfere with the elastic part 18 after being inserted into the guide sleeve 5; the other end of the elastic element 18 is connected with the guide seat 6 and fixed on the guide seat 6, and the guide seat 6 is correspondingly provided with a connecting block. Then, when the back member 2 is rotated backward relative to the armrest member 1, the elastic member 18 will be elastically deformed to provide an elastic force for returning the back member 2 again. So that the user can feel the damping feeling when leaning backwards.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. A backrest armrest rotating structure of a reclining chair is characterized in that: comprises armrest parts and chair back parts; the lower part of the chair back component is rotationally connected with the lower part of the armrest component; an angle adjusting mechanism is arranged above the rotary connection part of the armrest part and the chair back part; the angle adjusting mechanism comprises a guide sleeve arranged on the armrest part, an arc-shaped guide seat correspondingly arranged on the chair back part and a locking control assembly; a movable groove is arranged in the guide sleeve, the guide seat is in sliding insertion fit in the movable groove, and the chair back component rotates relative to the armrest component so that the guide seat slides in the movable groove along an arc-shaped track; the locking control assembly comprises a locking pin horizontally penetrating through the guide sleeve, a plurality of lock holes arranged on the guide seat and an adjusting switch; the adjustment switch is configured to be able to control the movement of the lock pin in the axial direction thereof to insert the lock pin into any one of the plurality of lock holes.

2. The reclining chair back rest arm rest rotating structure according to claim 1, wherein: the armrest part comprises a longitudinal support rod, an armrest panel arranged at the upper end of the support rod and an armrest fixing part which extends from the bottom end of the support rod and is used for being connected with the chair seat; the guide sleeve extends backwards from the upper end of the support rod, and the guide seat is correspondingly arranged on the chair back component and extends forwards.

3. The reclining chair back rest arm rest rotating structure according to claim 1, wherein: arc-shaped sliding grooves are respectively concavely arranged on the end surfaces of the two sides of the guide seat; the guide sleeve is arc-shaped, and arc-shaped sliding strips are correspondingly arranged on two side walls in the guide sleeve respectively; the guide seat is inserted in the guide sleeve to enable the sliding strip to be embedded in the sliding groove in a sliding mode.

4. The reclining chair back rest arm rest rotating structure according to claim 3, wherein: a metal locking sheet is arranged in the guide seat, and a sliding groove is formed in the end face of the guide seat so that the locking sheet is exposed outside; the locking hole is provided on the exposed portion of the metal piece.

5. The reclining chair back rest arm rest rotating structure according to claim 4, wherein: the exposed part of the locking piece is also provided with an arc-shaped guide groove; the lock holes are arranged on the lock piece at intervals along the path of the guide groove, and the diameter of each lock hole is larger than the height of the guide groove; the end part of the locking pin is provided with adjacent clamping columns and a guide column with the diameter smaller than that of the clamping columns, and the clamping columns are configured to be capable of being in clamping fit with the locking holes; the guide post is configured to be capable of being in sliding fit in the guide groove; in the locking state, the clamping column is clamped in the lock hole; under the unlocking state, the action regulating switch controls the locking pin to transversely move, so that the clamping column exits from the lock hole and the guide column is positioned in the guide groove.

6. The reclining chair back rest arm rest rotating structure according to claim 5, wherein: the adjusting switch is a knob which is exposed out of the guide sleeve, and the knob is fixedly connected with the end part of the locking pin; the locking control assembly also comprises a knob matching seat arranged at the root part of the guide sleeve; the locking pin is slidably arranged in the knob matching seat in a penetrating way; the knob is matched with the knob matching seat in a pushing and abutting mode, a push block extending towards the knob matching seat is arranged on the knob, and an arc-shaped inclined plane matched with the push block in the knob matching seat in a pushing and abutting mode is correspondingly arranged in the knob matching seat; the knob rotates relative to the knob matching seat to enable the push block to move along the arc-shaped inclined plane, and the knob simultaneously moves horizontally relative to the knob matching seat.

7. The reclining chair back rest arm rest rotating structure according to claim 6, wherein: the stop pin is provided with a stop ring, a return spring is arranged between the stop ring and the knob matching seat, the return spring is sleeved on the stop pin, and the return spring is configured to ensure that the stop pin always has the trend of transversely moving towards the inner part of the guide sleeve to clamp the clamping column and the lock hole.

8. The reclining chair back rest arm rest rotating structure according to claim 1, wherein: an elastic part is arranged between the guide sleeve and the guide seat; the elastic piece is arranged in the guide sleeve, one section of the elastic piece is fixedly connected with the guide sleeve, and the other end of the elastic piece is fixedly connected with the guide seat.

9. The reclining chair back rest arm rest rotating structure according to claim 8, wherein: the elastic piece is arranged below the root part of the guide sleeve; and a notch for avoiding the elastic piece is arranged at the lower part of the front end of the guide seat.

10. The reclining chair back rest arm rest rotating structure according to claim 2, wherein: a rotation limiting structure is arranged between the lower part of the chair back component and the lower part of the armrest component, and the rotation limiting structure comprises a rotation lug which is arranged on the chair back component and protrudes outwards and a rotation groove which is correspondingly arranged at the bottom of the supporting rod; the rotating lug is provided with an arc-shaped rotating part and a limiting bulge protruding outwards; the rotating groove is provided with an arc groove which is in rotating fit with the arc rotating part and a limiting groove which is used for limiting fit with the limiting protrusion.

Images