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CN-224206481-U - Headrest assembly of seat and seat

CN224206481UCN 224206481 UCN224206481 UCN 224206481UCN-224206481-U

Abstract

The utility model discloses a headrest assembly of a seat and the seat, wherein the headrest assembly of the seat comprises a fixed seat, a movable seat, a connecting seat, a headrest and a driving mechanism, the fixed seat is provided with a sliding groove, the movable seat is installed in the sliding groove in a sliding mode, the rear end face of the sliding groove forms an installation wall, an installation cavity is formed in the fixed seat and located at the rear side of the installation wall, the driving mechanism comprises a motor, a speed reducer, a screw rod and a nut, the motor and the speed reducer are located in the installation cavity, a supporting piece supported at the rear side of a shell of the speed reducer is arranged in the fixed seat, the connecting seat is pivoted at the front end of the movable seat through a transversely extending rotating shaft, a locking mechanism is arranged between the connecting seat and the movable seat, the headrest is installed on the connecting seat and can slide relative to the connecting seat in the vertical direction, an elastic element is arranged between the headrest and the connecting seat, and the elastic element is used for applying upward elastic stress to the headrest. The utility model realizes the multi-degree-of-freedom adjustment of the headrest and can provide stable support for the headrest.

Inventors

  • FENG XIAOWEI
  • Request for anonymity

Assignees

  • 杭州黑白调科技有限公司

Dates

Publication Date
20260508
Application Date
20250630

Claims (10)

  1. 1. The headrest assembly of the seat is characterized by comprising a fixed seat, a movable seat, a connecting seat, a headrest and a driving mechanism; The driving mechanism comprises a motor, a speed reducer, a screw rod and a nut, wherein the motor and the speed reducer are both positioned in the mounting cavity, the front side surface of a shell of the speed reducer is abutted against the rear side surface of the mounting wall, the motor is arranged below the speed reducer, the output shaft of the motor is connected to the input end of the speed reducer, the screw rod is connected to the output end of the speed reducer and penetrates through the mounting wall to extend forwards, the nut is sleeved on the screw rod and fixedly matched with the movable seat, and a supporting piece supported on the rear side of the shell of the speed reducer is arranged in the fixing seat; The connecting seat is pivoted at the front end of the movable seat through a transversely extending rotating shaft, and a locking mechanism is arranged between the connecting seat and the movable seat; the headrest is installed on the connecting seat and can slide relative to the connecting seat in the up-down direction, and an elastic element is arranged between the headrest and the connecting seat and is used for applying upward elastic stress to the headrest.
  2. 2. The headrest assembly of claim 1, wherein the fixed seat comprises an upper fixed seat, a lower fixed seat and a rear cover, the upper fixed seat and the lower fixed seat are detachably fixed together and jointly enclose a sliding groove, and the rear cover is detachably fixed at the rear sides of the upper fixed seat and the lower fixed seat and jointly encloses a mounting cavity with the upper fixed seat and the lower fixed seat.
  3. 3. The headrest assembly of claim 2, wherein the support member is a support rib protruding forward from a front side of the rear cover, the lower fixing base is provided with a plurality of front positioning ribs, the front side of the rear cover is provided with a plurality of rear positioning ribs, and the housing of the motor is clamped between the front positioning ribs and the rear positioning ribs.
  4. 4. The headrest assembly of claim 2, wherein the mounting wall comprises an upper mounting wall integrally formed with the upper fixing base and a lower mounting wall integrally formed with the lower fixing base, the upper mounting wall and the lower mounting wall are abutted and formed with a through hole therebetween for a screw to pass through, the upper mounting wall is provided with an upper groove with a downward opening, the lower mounting wall is provided with a lower groove with an upward opening, and the front side surface of the reducer housing is provided with two projections respectively embedded in the upper groove and the lower groove.
  5. 5. The headrest assembly of the seat according to claim 1, wherein the movable seat comprises two connecting lugs which are opposite left and right, a rotating part which is embedded between the two connecting lugs is arranged on the connecting seat, a shaft hole which extends from one side surface to the other side surface is arranged on the rotating part, the rotating shaft is penetrated in the shaft hole, two ends of the rotating shaft are respectively protruded out of the shaft hole, the locking mechanism comprises a positioning block which is fixedly matched with the rotating part and sleeved on the rotating shaft, a pressing block which can move relative to the connecting lugs along the axial direction of the rotating shaft and is sleeved on the rotating shaft, and an elastic pressing piece, a plurality of convex teeth are respectively arranged on the mutually-adhered surfaces of the positioning block and the pressing block, the convex teeth of the positioning block and the convex teeth of the pressing block are mutually meshed together, and the elastic pressing piece is arranged between the pressing block and the end part of the rotating shaft so as to apply an elastic stress facing the inner side to the pressing block.
  6. 6. The headrest assembly of the seat according to claim 5, wherein the connecting lug is provided with a mounting hole, the inner wall of the mounting hole is provided with a guide groove with the extending direction consistent with the axial direction of the rotating shaft, the outer periphery of the pressing block is provided with a flange which is embedded in the guide groove in a sliding manner, the rotating shaft is a locking screw, the inner ends of two rod parts of the locking screw penetrate into shaft holes of the rotating part and are mutually screwed together, the elastic pressing piece is an elastic rubber sleeve sleeved outside the locking screw, the inner end face of the elastic rubber sleeve abuts against the pressing block, and the outer end face of the elastic rubber sleeve abuts against a nut of the locking screw.
  7. 7. The headrest assembly of the seat according to claim 1, wherein the headrest includes a back plate provided with two guide grooves extending in an up-down direction, the connection seat is provided with two slide tables respectively embedded in the two guide grooves, a stopper is detachably fixed to a front end surface of the slide table, and the back plate is defined between the connection seat and the stopper.
  8. 8. The headrest assembly of claim 7, wherein the back plate is provided with a hooking post positioned below the sliding table, the elastic element is a tension spring, and an upper end portion and a lower end portion of the tension spring are respectively hooked on the sliding table and the hooking post.
  9. 9. The headrest assembly of the seat according to claim 7, further comprising a flexible shielding part positioned on the front side of the back plate, wherein a containing cavity is defined between the flexible shielding part and the back plate, a massage machine core is arranged in the containing cavity, a cable sheath is connected between the connecting seat and the fixing seat, and a cable of the massage machine core penetrates through a preset wire through hole in the back plate and the cable sheath and then stretches into the installation cavity.
  10. 10. A seat comprising a headrest assembly of a seat as claimed in any one of claims 1 to 9.

Description

Headrest assembly of seat and seat Technical Field The utility model relates to the technical field of seats, in particular to a headrest assembly of a seat and the seat. Background In order to prevent fatigue caused by the suspension of the head and the neck of a user, some existing office chairs and electronic racing chairs are generally provided with a headrest assembly for supporting the head and the neck of the user. The existing headrest assemblies can only realize adjustment in a single direction, and are difficult to adapt to different sitting postures of users, and the headrest assemblies of some seats can realize adjustment in multiple degrees of freedom, but in view of the fact that the space of the headrest parts of the seats is limited, the sizes of all parts are limited, the strength of the parts matched with each other is limited, and therefore stable support is difficult to be provided for the head and neck parts of the users, and the comfort of the seats is affected. Disclosure of utility model The utility model aims to provide a headrest assembly of a seat and the seat, which can realize multi-degree-of-freedom adjustment and provide stable support. In order to achieve the above purpose, the utility model adopts the following technical scheme: the headrest component of the seat comprises a fixed seat, a movable seat, a connecting seat, a headrest and a driving mechanism; The driving mechanism comprises a motor, a speed reducer, a screw rod and a nut, wherein the motor and the speed reducer are both positioned in the mounting cavity, the front side surface of a shell of the speed reducer is abutted against the rear side surface of the mounting wall, the motor is arranged below the speed reducer, the output shaft of the motor is connected to the input end of the speed reducer, the screw rod is connected to the output end of the speed reducer and penetrates through the mounting wall to extend forwards, the nut is sleeved on the screw rod and fixedly matched with the movable seat, and a supporting piece supported on the rear side of the shell of the speed reducer is arranged in the fixing seat; The connecting seat is pivoted at the front end of the movable seat through a transversely extending rotating shaft, and a locking mechanism is arranged between the connecting seat and the movable seat; the headrest is installed on the connecting seat and can slide relative to the connecting seat in the up-down direction, and an elastic element is arranged between the headrest and the connecting seat and is used for applying upward elastic stress to the headrest. Preferably, the fixing seat comprises an upper fixing seat, a lower fixing seat and a rear cover, wherein the upper fixing seat and the lower fixing seat are detachably fixed together and jointly enclose into a chute, and the rear cover is detachably fixed at the rear sides of the upper fixing seat and the lower fixing seat and jointly encloses into an installation cavity with the upper fixing seat and the lower fixing seat. Preferably, the support piece is a support convex rib protruding forwards from the front side surface of the rear cover, a plurality of front positioning ribs are arranged on the lower fixing seat, a plurality of rear positioning ribs are arranged on the front side surface of the rear cover, and the shell of the motor is clamped between the front positioning ribs and the rear positioning ribs. Preferably, the mounting wall comprises an upper mounting wall integrally formed with the upper fixing seat and a lower mounting wall integrally formed with the lower fixing seat, the upper mounting wall is in butt joint with the lower mounting wall and forms a through hole for a screw rod to pass through between the upper mounting wall and the lower mounting wall, an upper groove with a downward opening is formed in the upper mounting wall, a lower groove with an upward opening is formed in the lower mounting wall, and two convex blocks respectively embedded in the upper groove and the lower groove are arranged on the front side surface of the reducer shell. Preferably, the movable seat comprises two connecting lugs which are opposite left and right, a rotating part which is embedded between the two connecting lugs is arranged on the connecting seat, a shaft hole which extends from one side surface to the other side surface is arranged on the rotating part, the rotating shaft is connected in the shaft hole in a penetrating way, two ends of the rotating shaft are respectively protruded out of the shaft hole, the locking mechanism comprises a positioning block which is fixedly matched with the rotating part and sleeved on the rotating shaft, a pressing block which can move relative to the connecting lugs along the axial direction of the rotating shaft and is sleeved on the rotating shaft, and an elastic pressing piece, a plurality of convex teeth are respectively arranged on the mutually attached surfaces of the positioning block and t