CN215226103U

CN215226103U - Rotary structure of front-inserting writing board for auditorium chair

Info

Publication number: CN215226103U
Application number: CN202121277731.2U
Authority: CN
Inventors: 宁佐炎
Original assignee: Foshan Kai Tai Chair Industry Co ltd
Current assignee: Foshan Kai Tai Chair Industry Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-12-21
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a rotary structure of a front-inserting type writing board capable of being stored in an auditorium chair, relating to an auditorium chair accessory, which comprises a bracket, a rotating arm, a writing board supporting plate, a rotating seat sleeve, a spring and a spring seat sleeve; support top horizontal installation is on auditorium chair handrail, board layer board and swinging boom fixed connection, spring seat cover, spring, rotatory seat cover cup joint with the swinging boom front end respectively, rotatory seat cover and support rotatable coupling, the swinging boom front end is provided with the location bolt, the location bolt can make a round trip to rotate between arc recess A and the arc recess B on the spacing post of rotatory seat cover front end. The utility model discloses have the multiple stop gear of board layer board, can not make the board upset because of the maloperation when using, upwards or the downward rotation causes the condition emergence of walking the position, have reasonable in design, convenient to use, easily accomodate, pleasing to the eye practicality simultaneously, and simple to operate's beneficial effect.

Description

Rotary structure of front-inserting writing board for auditorium chair

Technical Field

The utility model relates to an auditorium chair accessory, concretely relates to auditorium chair can accomodate preceding formula of inserting board rotating-structure.

Background

Auditorium chairs are mostly composed of four parts, namely a chair seat, a chair back, armrests and standing legs, and the standing legs and the armrests are generally combined into a whole to form a firmly installed armrest frame. The component structure is generally a steel-wood structure or a steel-plastic structure. The auditorium chair is used as a practical chair, the accessory facilities of the auditorium chair are also important, the good accessory facilities can also increase the use comfort for people in the use process, the writing board is a component which can not be lost in the auditorium chair accessory facilities, the writing board is an accessory designed for the chair used for meetings or teaching, the auditorium chair is convenient for writing notes and placing documents and books during meetings or class, and the audition type and the hidden type are generally adopted. Can hide the board and also generally be called leading board, the folding device of packing up of board generally is metal construction, can hide in the handrail after leading board packs up, selects to install hidden auditorium chair in order to practice thrift most auditoriums in place, but the board adopts the formula structure of packing up more, can pack up when not using not occupation space so that have wideer passageway, specially adapted does not use the auditorium or the theater of board often. The hidden writing board needs to be placed inside the armrest frame, the armrest board is not convenient to open for use when the hidden writing board is used, but the hidden writing board is not attractive, and the supporting plate of a common writing board is not rotated by a limiting mechanism, so that the writing board is easy to walk, rotate, turn and the like.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art, and provides a rotary structure of a front-inserting writing board, which is convenient to use, beautiful and practical and can be accommodated in an auditorium chair with a multi-rotation limiting mechanism.

In order to achieve the above object, the utility model adopts the following technical scheme: a rotary structure of a front-inserting type writing board capable of being accommodated in an auditorium chair comprises a support, a rotary arm, a writing board supporting plate, a rotary seat sleeve, a spring and a spring seat sleeve; support top horizontal installation is on auditorium chair handrail, board layer board and swinging boom fixed connection, spring seat cover, spring, rotatory seat cover cup joint with the swinging boom front end respectively, rotatory seat cover and support rotatable coupling, the swinging boom front end is provided with the location bolt, the location bolt can make a round trip to rotate between arc recess A and the arc recess B on the spacing post of rotatory seat cover front end.

After the structure is adopted, the utility model discloses have the rotatory stop gear of board layer board, make the rotatory restriction of board layer board within specific angle, the difficult problem that takes place the upset.

Furthermore, the bracket is of an inverted U-shaped plate structure, and rotating shaft screws are arranged on two sides of the inverted U-shaped plate; the rotating arm is of a rod-shaped structure; the writing board supporting plate is of a plate-shaped structure; the rotary seat sleeve is a hollow cylinder and is provided with a rotating shaft through hole; the spring seat sleeve is in an annular sleeve shape.

After the structure is adopted, the utility model has the advantages of reasonable design, simple structure, beautiful and practical appearance and convenient installation.

Further, the arc between the arc groove A and the arc groove B on the limiting column is S-shaped.

After adopting above-mentioned structure, only need exert certain strength and twist board layer board and just can make the location bolt of installing in the swivel arm front end smoothly rotate between arc recess A and the arc recess B on spacing post.

Further, the maximum angle of rotation between the arc-shaped groove A and the arc-shaped groove B of the positioning bolt on the limiting column is 90 degrees.

After the structure is adopted, the rotation angle of the writing board supporting plate is limited within 90 degrees.

Further, still be equipped with the stopper in "U" type recess of falling of support, stopper restriction rotatory seat cover is upwards rotatory to within 0~5 degrees with the horizontal plane contained angle, arc recess B on the spacing post is a little higher than arc recess A, the stopper is located the top that the direction was extended to the swivel arm front end.

After the structure is adopted, when the rotating seat cover is rotated upwards to be approximately parallel to the horizontal plane by adopting the limiting block, the rotating arm cannot rotate upwards continuously; when the positioning bolt rotates into the arc-shaped groove B, the front end of the rotating arm moves a certain distance to the extending direction, and the limiting block is positioned above the front end of the rotating arm, so that the rotating arm cannot rotate downwards; when in use, the writing board can not be rotated upwards or downwards due to misoperation to cause the phenomenon of walking.

Furthermore, a limiting notch is further formed in one side or two sides of the support, and the positioning bolt extends out of the upper right corner of the limiting notch when rotating to the arc-shaped groove B.

After adopting above-mentioned structure, when rotating the board layer board and making the location bolt get into arc recess B, the location bolt stretches out from spacing breach, has withstood breach top, makes the swinging boom can't upwards or the decurrent rotation, reaches at the board user state and strengthens spacing effect.

Furthermore, a containing device is further arranged on the support and is of an L-shaped structure, and an opening at one end of the containing device is provided with a U-shaped containing groove.

After adopting above-mentioned structure, the board layer board can rotate to accomodate and hide in auditorium chair side below, reaches convenient to use, easily accomodates, pleasing to the eye practical beneficial effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is an exploded perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of a swivel seat cover according to an embodiment of the present invention;

FIG. 3 is a perspective view of the embodiment of the present invention in use;

fig. 4 is a perspective view illustrating a retracted state according to an embodiment of the present invention.

Description of reference numerals:

1. a support; 2. a rotating arm; 3. a tablet support plate; 4. rotating the seat cover; 5. a spring; 6. a spring seat cover; 7. a storage device; 11. a spindle screw; 12. a limiting notch; 13. a limiting block; 21. the front end of the rotating arm; 22. positioning a bolt; 41. a through hole of the rotating shaft; 42. a limiting column.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, the technical solution adopted by the present embodiment is: a rotary structure of a front-inserting type writing board capable of being stored in an auditorium chair comprises a support 1, a rotating arm 2, a writing board supporting plate 3, a rotating seat sleeve 4, a spring 5 and a spring seat sleeve 6; the utility model discloses a writing board support, including support 1, tablet layer board 3 and swinging boom 2 fixed connection, spring seat cover 6, spring 5, rotatory seat cover 4 cup joint with rotatory arm front end 21 respectively, rotatory seat cover 4 and 1 rotatable coupling of support, rotatory arm front end 21 is provided with location bolt 22, location bolt 22 can make a round trip to rotate between arc recess A and the arc recess B on the spacing post 42 of rotatory seat cover 4 front end, makes the tablet layer board rotate the restriction within specific angle, is difficult for taking place the problem of upset.

In the specific embodiment, the bracket 1 is of an inverted U-shaped plate structure, and two sides of the inverted U-shaped plate are provided with rotating shaft screws 11; the rotating arm 2 is of a rod-shaped structure; the writing board supporting plate 3 is of a plate-shaped structure; the rotary seat sleeve 4 is a hollow cylinder and is provided with a rotating shaft through hole 41; the spring seat sleeve 6 is in an annular sleeve shape; the embodiment has the advantages of reasonable design, simple structure, attractive appearance, practicability and convenience in installation.

In this embodiment, the arc between the arc groove a and the arc groove B on the limiting post 42 is S-shaped, and when in use, the positioning pin 22 installed at the front end 21 of the rotating arm can smoothly rotate between the arc groove a and the arc groove B on the limiting post 42 only by applying a certain force to twist the tablet supporting plate.

In this embodiment, the maximum angle of rotation of the positioning pin 22 between the arc-shaped groove a and the arc-shaped groove B on the limiting post is 90 degrees, so that the rotation angle of the tablet support plate 3 is limited within 90 degrees.

In the specific embodiment, a limiting block 13 is further arranged in the inverted U-shaped groove of the bracket 1, the limiting block 13 limits the upward rotation of the rotary seat cover 4 to an included angle of 0-5 degrees with the horizontal plane, and when the rotary seat cover 4 is rotated upward to be approximately parallel to the horizontal plane by adopting the limiting block 13, the rotary arm 2 cannot be rotated upward continuously; the arc-shaped groove B on the limiting column 42 is slightly higher than the arc-shaped groove A, the limiting block 13 is positioned above the extending direction of the front end 21 of the rotating arm, when the positioning bolt 22 rotates into the arc-shaped groove B, the front end 21 of the rotating arm can move for a certain distance in the extending direction, and at the moment, the limiting block 13 is positioned above the front end 21 of the rotating arm, so that the rotating arm 2 cannot rotate downwards; when in use, the writing board can not be rotated upwards or downwards due to misoperation to cause the phenomenon of walking.

In this embodiment, spacing breach 12 is still established to one side or both sides of support, the right upper corner of follow spacing breach 12 stretches out when location bolt 22 rotates arc recess B, when rotating tablet layer board 3 and making location bolt 22 get into arc recess B, location bolt 22 stretches out from spacing breach 12, has withstood the breach top, makes swinging boom 2 can't be down or the upwards rotation, reaches at the tablet user state and strengthens spacing effect.

In this embodiment, still be provided with storage device 7 on support 1, storage device 7 is "L" type structure, and storage device 7 one end opening has the groove of accomodating that is "U" type, and board layer board 3 can rotate to accomodate and hide in auditorium chair side below, reaches convenient to use, easily accomodates, pleasing to the eye practical beneficial effect.

The utility model discloses specific embodiment mode when the installation, at first with tablet layer board 3 and 2 welding of swinging boom or screwed connection to with spring seat cover 6, spring 5, rotatory seat cover 4 cup joints respectively at the swing boom front end 21 of 2, again with location bolt 22 and the welding of swing boom front end 21 or screwed connection, install spring seat cover 4, storage device 7 on the support respectively at last, through 1 top screw horizontal installation of support can on auditorium's chair handrail, the installation is simple and easy convenient.

The utility model discloses embodiment mode theory of operation: when the writing board is needed to be used, firstly, the writing board supporting plate 3 provided with the writing board is screwed out of the accommodating device 7, and when the writing board supporting plate 3 is rotated upwards to be approximately parallel to a horizontal plane and cannot be rotated upwards continuously, a certain force is applied to twist the writing board supporting plate 3 to a horizontal position, so that the positioning bolt 22 arranged at the front end 21 of the rotating arm is rotated into the arc-shaped groove B from the arc-shaped groove A on the limiting column 42, and the positioning bolt 22 enters the arc-shaped groove B due to a certain resilience of the spring 5 and cannot be rotated easily, and is limited by the limiting block 13 and the limiting notch 12 and cannot be rotated upwards or downwards, so that the writing board reaches a stable use state which is not easy to move; when the tablet is not used and needs to be hidden and stored, on the contrary, a certain force is applied to twist the tablet to the horizontal vertical position, so that the positioning bolt 22 rotates to the arc-shaped groove A from the arc-shaped groove B on the limiting column 42, the limitation is removed at the moment, the tablet can be rotated downwards, the rotating arm 3 is screwed into the U-shaped storage groove of the storage device 7, and the tablet can be stored and hidden below the side of the auditorium chair.

The utility model relates to an auditorium chair can accomodate preceding formula of inserting board rotating-structure has 3 multiple stop gear of board layer board, can not make the board upset because of the maloperation when using, upwards or the condition emergence of walking the position is caused to the downward rotation, has reasonable in design, convenient to use, easily accomodate, pleasing to the eye practicality simultaneously, and simple to operate's beneficial effect.

The above description is only for the purpose of illustrating the technical solutions of the present invention, and is not intended to limit other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention, so long as they do not depart from the spirit and scope of the technical solutions of the present invention, they should be covered in the scope of the claims of the present invention.

Claims

1. A rotary structure of a front-inserting writing board of an auditorium chair, which is characterized in that: comprises a bracket (1), a rotating arm (2), a writing board supporting plate (3), a rotating seat sleeve (4), a spring (5) and a spring seat sleeve (6); support (1) top horizontal installation is on auditorium chair handrail, board layer board (3) and swinging boom (2) fixed connection, spring seat cover 6, spring (5), rotatory seat cover (4) cup joint with swinging boom front end (21) respectively, rotatory seat cover (6) and support (1) rotatable coupling, swinging boom front end (21) are provided with location bolt (22), arc recess (A) and arc recess (B) that location bolt (22) can be on the spacing post (42) of rotatory seat cover (4) front end are between round trip to rotate.

2. The auditorium chair capable of accommodating front-insertion writing board of claim 1, wherein: the support (1) is of an inverted U-shaped plate structure, and rotating shaft screws (11) are arranged on two sides of the inverted U-shaped plate; the rotating arm (2) is of a rod-shaped structure; the writing board supporting plate (3) is of a plate-shaped structure; the rotary seat sleeve (4) is a hollow cylinder and is provided with a rotating shaft through hole 41; the spring seat sleeve (6) is in an annular sleeve shape.

3. The auditorium chair capable of accommodating front-insertion writing board of claim 1, wherein: the arc between the arc groove (A) and the arc groove (B) on the limiting column (42) is S-shaped.

4. The auditorium chair capable of accommodating front-insertion writing board of claim 1, wherein: the maximum angle of rotation of the positioning bolt (22) between the arc-shaped groove (A) and the arc-shaped groove (B) on the limiting column is 90 degrees.

5. The auditorium chair capable of accommodating front-insertion writing board as claimed in claim 2, wherein: still be equipped with stopper (13) in the type recess of falling "U" of support (1), stopper (13) restriction rotation seat cover (4) make progress rotatory to within 0~5 degree with the horizontal plane contained angle, arc recess (B) on spacing post (42) is a little higher than arc recess (A), stopper (13) are located the top that rotatory arm front end (21) stretched the direction.

6. The auditorium chair capable of accommodating front-insertion writing board as claimed in claim 5, wherein: and one side or two sides of the support are also provided with a limiting notch (12), and the positioning bolt (22) extends out of the upper right corner of the limiting notch (12) when rotating to the arc-shaped groove (B).

7. The auditorium chair capable of accommodating front-insertion writing board of claim 1, wherein: the support (1) is also provided with a storage device (7).

8. The auditorium chair capable of accommodating front-insertion writing board of claim 7, wherein: the storage device (7) is of an L-shaped structure, and one end opening of the storage device (7) is provided with a U-shaped storage groove.