CN211483703U - Double locking mechanism of headrest auxiliary support - Google Patents

Abstract

The utility model relates to a double locking mechanism of a headrest auxiliary support, which comprises a stand column and a stand frame part and is characterized in that the stand frame part comprises a foot rest shaft sleeve positioned in the center, the foot rest shaft sleeve is connected with the stand column, the side wall of the foot rest shaft sleeve, which is close to the upper end, is provided with a positioning screw hole, a fastening stud is connected in the positioning screw hole, and the inner end of the fastening stud can be abutted against the side wall of the stand column; an elastic positioning mechanism is arranged on the other side of the side wall of the foot rest shaft sleeve, which is close to the upper end and opposite to the positioning screw hole; elastic positioning mechanism is including being fixed in the fourth bearing spare of foot rest axle sleeve lateral wall, through the articulated locating plate of axle rotation on the fourth bearing spare, and this epaxial ring cover torsional spring, the locating plate is the three-section and buckles, and the upper end of locating plate is provided with the horizontally reference column. The utility model discloses an elastic positioning mechanism to cooperation foot rest axle sleeve and the lift location structure between the stand have formed double locking structure, and are more firm.

Description

Double locking mechanism of headrest auxiliary support

Technical Field

The utility model belongs to the support field, concretely relates to headrest auxiliary stand's dual locking mechanical system.

Background

During noon break or short time rest, the upper limbs and the head are prone on the table in a common posture. The prone posture easily causes neck distortion and ache, and arm compression and ache, which is not good for health. Therefore, this unit technical personnel have designed the headrest auxiliary stand that can adapt to the posture of lying prone and provide comfortable support.

Disclosure of Invention

The utility model discloses mainly to headrest auxiliary stand's lift adjustment structure, invented a headrest auxiliary stand's dual-locking mechanism, adopted elastic positioning mechanism to cooperation foot rest axle sleeve and the stand between the lift location structure, formed dual-locking structure, it is more firm.

The above technical problem of the present invention can be solved by the following technical solutions: a double locking mechanism of a headrest auxiliary support comprises a stand column and a foot frame part connected with the stand column, and is characterized in that the foot frame part comprises a foot frame shaft sleeve positioned in the center, and the foot frame shaft sleeve is connected to the outer side of the stand column; the side wall of the foot rest shaft sleeve, which is close to the upper end, is provided with a positioning screw hole, a fastening stud is connected in the positioning screw hole, and the inner end of the fastening stud can be abutted against the side wall of the upright post.

An elastic positioning mechanism is arranged on the other side, close to the side wall of the upper end and opposite to the positioning screw hole, of the foot rest shaft sleeve; the elastic positioning mechanism comprises a fourth bearing piece fixed on the side wall of the foot rest shaft sleeve, the fourth bearing piece is rotatably hinged with a positioning plate through a shaft, the shaft is sleeved with a torsional spring, the positioning plate is bent in three sections, and the upper end of the positioning plate is provided with a horizontal positioning column; meanwhile, a plurality of positioning holes are formed in the side wall of the upright post at intervals; the positioning columns can be respectively embedded into the positioning holes.

The lifting and positioning of the foot rest shaft sleeve and the upright post are mainly realized by a positioning screw hole and a fastening stud; the limit end at the lower end of the upright post can avoid the accidental separation of the foot rest shaft sleeve and the upright post in the lifting process.

The elastic positioning mechanism is matched with the lifting positioning structure between the foot rest shaft sleeve and the upright post to form a double locking structure, so that the foot rest shaft sleeve is firmer; in the elastic positioning mechanism, a positioning plate can be pressed, and the positioning column is controlled to be inserted into or separated from a positioning hole in the side wall of the upright column by pressing the positioning plate; when the positioning column is separated from the positioning hole, the upright column is directly pulled up or pressed down to be at a proper height, then the pressing action on the positioning plate is eliminated, and the positioning column is inserted into the positioning hole again.

Preferably, the lower end of the upright post is provided with a limiting end which is relatively expanded outwards.

Preferably, at least three third bearing pieces are uniformly arranged on the outer side wall surface of the foot rest shaft sleeve, and each third bearing piece is rotatably hinged with a foot rod.

Preferably, a limiting member for limiting a rotation range is provided between the leg and the third bearing member.

Preferably, the foot rest part comprises a foot rest shaft sleeve positioned in the center, at least three third bearing pieces are uniformly arranged on the outer side wall surface of the foot rest shaft sleeve, and each third bearing piece is rotatably hinged with a foot support rod; and a limiting part for limiting the rotation amplitude is arranged between the foot rod and the third bearing part. In order to simplify the structure, the limiting function of the limiting member is realized by an inclined surface on the upper side of the third bearing member, when the foot rod is in a proper inclined position, an upward side wall of the foot rod close to the upper end is tightly attached to and abutted against the inclined surface on the third bearing member, and the inclined position of the foot rod is limited.

To sum up, compared with the prior art, the utility model has the following advantages:

the lifting between the upright post and the foot rest of the utility model forms a double locking structure by the elastic positioning mechanism matching with the lifting positioning structure between the foot rest shaft sleeve and the upright post, which is more stable and firm; the utility model discloses a spacing end of stand lower extreme can avoid lift in-process foot rest axle sleeve and stand accident to break away from.

Drawings

FIG. 1 is a state diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

The reference numbers in the figures are: 1. a headrest mechanism; 10. a first bearing member; 11. a column; 12. a face support; 13. a hollowed-out area; 14. a mounting member; 2. an arm rest mechanism; 21. an inclined upright post; 22. an arm pillow; 3. rotating the limiting groove; 4. fastening a positioning piece; 5. a coupling seat; 50. a second bearing member; 51. a central shaft sleeve; 6. a foot rest shaft sleeve; 60. a third bearing; 61. a foot bar; 62. positioning the screw hole; 63. fastening a stud; 64. a limiting end; 7. an elastic positioning mechanism; 70. a fourth bearing member; 71. positioning a plate; 72. and a positioning column.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1:

as shown in fig. 1, the headrest auxiliary bracket is constructed by applying a double locking mechanism to a lifting structure of the headrest auxiliary bracket, and comprises a support part at an upper part and a foot frame part at a lower part; the support part comprises a headrest mechanism 1 for supporting the head in a lying state and arm pillow mechanisms 2 which are positioned on two sides of the headrest mechanism 1 and are used for supporting arms.

The headrest mechanism 1 comprises a vertical upright post 11, and the upper end of the upright post 11 is connected with a face support seat 12; this face support 12 sets up to oval discoid, is the fretwork area 13 of being convenient for ventilative in face support 12's quotation middle part, has a round of relatively epirelief's installed part 14 at face support 12's quotation edge, installs the annular cushion of a round on this installed part 14, and the annular cushion overlaps on installed part 14 of face support 12 and the region near installed part 14.

In order to realize the adjustable inclination angle of the face support seat 12, a group of parallel first bearing parts 10 is vertically fixed on the downward disc surface of the face support seat 12, the first bearing parts 10 are provided with shaft holes, and an arc-shaped hollow-out rotary limiting groove 3 is arranged below the shaft holes; the first bearing part 10 is hinged to the upper end of the upright post 11 through a rotating shaft, meanwhile, a horizontally through positioning hole is formed in the upper end of the upright post 11 and below the hinged part, a fastening positioning part 4 is connected in the positioning hole, the fastening positioning part 4 adopts a rotating stud with rotation, and the fastening positioning part 4 transversely penetrates through the rotation limiting groove 3 on the first bearing part 10.

The arm pillow mechanism 2 is arranged on the upright post 11, and the arm pillow mechanism 2 comprises an inclined upright post 21 arranged in an inclined way and an arm pillow 22 connected to the upper end of the inclined upright post 21; specifically, the middle upper part of the upright post 11 is sleeved with a coupling seat 5, the coupling seat 5 comprises a central shaft sleeve 51 which is sleeved on the outer side of the upright post 11, a transverse through hole is formed in the central shaft sleeve 51, a plurality of fixing holes are formed in the upright post 11, and the central shaft sleeve 51 and the upright post 11 are fixedly connected through the fixing holes and bolt and nut fasteners.

The two sides of the central shaft sleeve 51 are respectively provided with a second bearing piece 50 with shaft holes; the lower end of the inclined upright post 21 forming the arm rest mechanism 2 is rotatably hinged to the second bearing part 50 through a shaft; a limiting member for limiting the rotation amplitude is arranged between the oblique upright post 21 and the central shaft sleeve 51; in order to simplify the structure, the limiting function of the limiting element is realized by the interference of the inclined upright post 21 and the central shaft sleeve 51, that is, the lower end surface of the inclined upright post 21 is inclined, when the inclined upright post 21 reaches a proper inclination angle, the inclined lower end surface is closely attached to the side surface of the central shaft sleeve 51 and is interfered with each other, and the inclined position of the inclined upright post 21 is limited.

As shown in fig. 2 and 3, the foot rest portion comprises a foot rest shaft sleeve 6 positioned in the center, three third bearing pieces 60 are uniformly distributed and connected on the outer side wall surface of the foot rest shaft sleeve 6, and each third bearing piece 60 is rotatably hinged with a foot rod 61; a limiting piece for limiting the rotation amplitude is arranged between the foot rod 61 and the third bearing piece 60; in order to simplify the structure, the position limiting function of the position limiting member is achieved by an inclined surface on the upper side of the third bearing 60, when the leg 61 is in a proper inclined position, an upward sidewall of the leg 61 near the upper end is closely attached to and abutted against the inclined surface on the third bearing 60, and the inclined position of the leg 61 is limited.

The foot rest shaft sleeve 6 is connected to the outer side of the upright post 11 in a sleeved mode, a transverse positioning screw hole 62 is formed in the side wall, close to the upper end, of the foot rest shaft sleeve 6, a fastening stud 63 is connected into the positioning screw hole 62, and the inner end of the fastening stud 63 can abut against the side wall of the upright post 11; and the lower end of the upright post has a limiting end 64 which is relatively expanded outwards.

The other side of the side wall of the foot rest shaft sleeve 6, which is close to the upper end and is opposite to the positioning screw hole 62, is provided with an elastic positioning mechanism 7; the elastic positioning mechanism 7 comprises a fourth bearing part 70 fixed on the side wall of the foot rest shaft sleeve 6, a positioning plate 71 is rotatably hinged on the fourth bearing part 70 through a shaft, a torsion spring is sleeved on the shaft, the positioning plate 71 is bent in three sections, and a horizontal positioning column 72 is arranged at the upper end of the positioning plate 71; meanwhile, a plurality of positioning holes are arranged on the side wall of the upright post 11 at intervals; the positioning posts 72 can be respectively embedded into the positioning holes.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (4)

1. A double locking mechanism of a headrest auxiliary bracket comprises a stand column (11) and a foot frame part connected with the stand column, and is characterized in that,

the foot rest part comprises a foot rest shaft sleeve (6) positioned in the center, and a foot rest shaft sleeve ring is connected to the outer side of the upright post in a sleeved mode; a positioning screw hole (62) is formed in the side wall, close to the upper end, of the foot rest shaft sleeve, a fastening stud (63) is connected in the positioning screw hole, and the inner end of the fastening stud can be abutted against the side wall of the upright post;

an elastic positioning mechanism (7) is arranged on the other side, close to the side wall of the upper end and opposite to the positioning screw hole, of the foot rest shaft sleeve; the elastic positioning mechanism comprises a fourth bearing (70) fixed on the side wall of the foot rest shaft sleeve, a positioning plate (71) is rotatably hinged on the fourth bearing through a shaft, a torsion spring is sleeved on the shaft, the positioning plate is bent in three sections, and a horizontal positioning column (72) is arranged at the upper end of the positioning plate; meanwhile, a plurality of positioning holes are formed in the side wall of the upright post at intervals; the positioning columns can be respectively embedded into the positioning holes.

2. The dual locking mechanism of headrest accessory bracket as claimed in claim 1, wherein the lower end of the upright has a relatively flared restraint end (64).

3. The double locking mechanism of headrest auxiliary stand according to claim 1, wherein at least three third bearing members (60) are uniformly provided on the outer side wall surface of the leg bushing, each of which is rotatably hinged with a leg bar (61).

4. The double locking mechanism of a headrest auxiliary bracket as claimed in claim 3, wherein a stopper for limiting a rotation amplitude is provided between the foot bar and the third bearing member.

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