Office chair with armrest blowing device

Abstract

An office chair with handrails and an air blowing device comprises chair legs, a base, a chair back and the handrails, a ventilation cavity is formed in the base, the air blowing device is arranged in the ventilation cavity, the handrails are of hollow tubular structures, the bottoms of the handrails extend into the ventilation cavity to be communicated with the air blowing device, the tops of the handrails extend to the two sides above the base and are provided with air outlets, and the air outlets are aligned with the front face of a person. When the blowing device works, cold air is injected from the bottom end of the handrail and is blown out from the air outlet through the internal channel to blow and dissipate heat from the front side of a user. The bottoms of the handrails are connected into a whole and provided with an air inlet, and the air blowing device is installed at the air inlet and comprises a device shell, fan blades and a driving motor. An adjusting grating is arranged at the air outlet and can adjust the blowing direction. By means of the air blowing device in the armrest, flexible air blowing and heat dissipation on the front face of a user are achieved, the problem that the front face, the arm portions, the armpits and other areas feel stuffy when the user sits for a long time is effectively solved, the comfort level and the working efficiency of office staff are improved, and body health is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair technical field, concretely relates to an office chair with armrest air blowing device. BACKGROUND

[0002] In the modern office environment, office workers often need to sit on the office chair for a long time. With the increase of work intensity and the limitation of office environment, the human body is prone to feel hot during long sitting, especially the front, arm and armpit areas. Due to body posture, clothing coverage and other reasons, air circulation is not smooth in these areas, and heat is easy to accumulate, which makes office workers feel uncomfortable and affects work efficiency and physical health.

[0003] In the prior art, the improvement of the heat dissipation function of the office chair is mainly concentrated in the seat and the backrest, and the heat dissipation range is limited. For example, the utility model patent with ventilation function office chair with patent application number 202420237338.8 is disclosed, which installs a fan at the bottom of the seat and the rear of the backrest to blow air for heat dissipation. The air supply range of this kind is limited to a fixed area, and it is difficult to adjust flexibly according to the user's sitting posture (such as forward-leaning office work, back-resting rest) or body parts (such as the inside of the arm and the armpit). UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an office chair with armrest air blowing device.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] An office chair with armrest air blowing device, comprising a chair leg, a base, a backrest and armrests on both sides, a gas pressure rod is arranged on the chair leg, the bottom of the base is rotatably installed at the top end of the gas pressure rod, a connecting seat is arranged at the lower part of the backrest, the backrest is fixedly connected to the rear part of the base through the connecting seat, a ventilation cavity passing through front and back is arranged on the base, and an air blowing device is arranged in the ventilation cavity; the armrests are hollow tubular structures and are symmetrical with each other, the bottoms of the armrests on both sides are inserted into the ventilation cavity and are communicated with the air blowing device, the tops of the armrests extend to both sides above the base, air outlets are arranged at the extension ends of the armrests, and the air outlets are aligned with the front of the person; when the air blowing device works, cold air is poured into the bottoms of the armrests, and then the cold air is blown out from the air outlets after passing through the channels in the armrests.

[0007] Further, the bottom ends of the handrails on both sides are connected to form a whole, and an air inlet is arranged at the connection, and the air blowing device is arranged at the air inlet; the air blowing device comprises a device housing fixed on the air inlet, fan blades rotatably arranged in the device housing, and a driving motor arranged outside the device housing, wherein the driving motor is fixed on the device housing and extends into the device housing through a rotating shaft to be connected with the fan blades, and an input port is arranged on the side of the device housing away from the driving motor, and an output port is arranged on the end of the device housing close to the air inlet.

[0008] Further, the air blowing device further comprises a storage battery, and the storage battery is arranged in the ventilation cavity to provide electric energy for the driving motor.

[0009] In the utility model, the air outlet on the handrail is provided with an adjusting grille, and the adjusting grille comprises a grille frame embedded in the air outlet, a plurality of horizontal air guiding pieces movably arranged in the grille frame, and a plurality of vertical air guiding pieces movably arranged in the grille frame, wherein the plurality of horizontal air guiding pieces are parallel to each other and extend in the front-rear direction, and the plurality of vertical air guiding pieces are parallel to each other and extend in the up-down direction.

[0010] Further, the plurality of horizontal air guiding pieces are connected through first linkage strips, and the plurality of vertical air guiding pieces are connected through second linkage strips.

[0011] Further, the adjusting grille further comprises an adjusting sliding block, and the adjusting sliding block is slidingly matched on the horizontal air guiding piece located in the middle, wherein the outer end of the adjusting sliding block protrudes out of the air outlet, and the inner end of the adjusting sliding block extends into the air outlet to be matched with the vertical air guiding piece.

[0012] In the utility model, the opening angle of the air outlet is set to be between 50° and 75°, and the length of the air outlet is set to be 12cm-15cm.

[0013] The utility model has the following advantages and beneficial effects:

[0014] By arranging the air blowing device in the ventilation cavity and fixing the bottom of the handrail to the ventilation cavity and the air blowing device, and by using the hollow tubular structure of the handrail, cold air is poured from the bottom end of the handrail and blown out from the top air outlet through the internal passage, so that the user's front surface can be blown and cooled, different sitting postures and body part requirements can be flexibly coped with, the problem of stuffy feeling in the front surface, arm part and armpit area due to poor air circulation during long sitting is effectively solved, the comfort and work efficiency of office workers are improved, and the health of the body is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described in combination with the drawings and embodiments:

[0016] Fig. 1It is a schematic view of the office chair in the embodiment of the present application;

[0017] Fig. 2 It is a schematic view of the connection between the armrest and the blowing device in the embodiment of the present application;

[0018] Fig. 3 It is a schematic view of the structure of the blowing device in the embodiment of the present application;

[0019] Fig. 4 It is a schematic view of the structure of the adjusting grid in the embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application, and the present application is not limited to the following embodiments.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0022] In addition, if the embodiments of the present application involve descriptions of "first" or "second" and the like, the descriptions of "first" or "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0023] For example, Figs. 1 to 4As shown, the embodiment discloses an office chair with armrest blowing device, which comprises chair leg 1, base 2, chair back 3 and armrest 4 on both sides, the chair leg 1 is provided with air pressure rod, the bottom of the base 2 is rotatably installed at the top end of the air pressure rod, the lower part of the chair back 3 is provided with connecting seat, the chair back 3 is fixedly connected at the rear part of the base 2 through the connecting seat, the base 2 is provided with front and rear through ventilation cavity 20, the ventilation cavity 20 is provided with blowing device 5, the bottom of the armrest 4 is fixed in the ventilation cavity 20 and connected with the blowing device 5, specifically, the armrest 4 is hollow tubular structure, and the armrest 4 on both sides is symmetrical, the armrest 4 on both sides is inserted into the ventilation cavity 20 through the curved rear bottom and communicated with the blowing device 5, the top of the armrest 4 extends to both sides above the base 2, specifically, the bottom of the armrest 4 is inserted into the ventilation cavity 20 from the rear part of the base 2, the top of the armrest 4 extends upward after extending forward horizontally after extending upward at the rear part of the bottom, in addition, the extension end of the top of the armrest 4 is also provided with air outlet 40, when a person sits on the office chair, the air outlet 40 is aligned with the front of the person, the blowing device 5 works to pour cold air from the bottom end of the armrest 4, then the cold air passes through the channel in the armrest 4 and finally blows out from the air outlet 40 to blow and heat the front of the user, preferably, in order to ensure that the air outlet 40 has a large enough blowing area, the opening angle of the air outlet 40 is set to be between 50°-75°, and the length of the air outlet 40 is set to be 12cm-15cm, when the opening angle is less than 50°, the blowing angle is too low, and the cold air cannot blow to the armpit and other parts, so the heat dissipation effect is poor, and when the opening angle is greater than 75°, the armrest 4 may be blocked when the person's arm is placed on the armrest 4, which affects the comfort of the armrest 4, therefore, the opening angle of the air outlet 40 in the embodiment is preferably 60°. By setting the blowing device 5 in the ventilation cavity 20 and fixing the bottom of the armrest 4 in the ventilation cavity 20 and connecting with the blowing device 5, using the hollow tubular structure of the armrest 4, the cold air is poured from the bottom end of the armrest 4, blown out from the top air outlet 40 through the internal channel, and can blow and heat the front of the user, which can flexibly cope with different sitting postures and body part requirements, effectively solve the problem of stuffy feeling in the front, arm part and armpit and other areas due to poor air circulation when sitting for a long time, improve the comfort and work efficiency of office workers, and protect the health of the body.

[0024] As a preferred embodiment, the bottom ends of the two handrails 4 are connected to each other to form a whole, and an air inlet 41 is arranged at the connection, and the air blowing device 5 is installed at the air inlet 41. Specifically, the air blowing device 5 comprises a device housing 51 fixed on the air inlet 41, fan blades 52 rotatably installed inside the device housing 51, and a driving motor 53 installed outside the device housing 51. The driving motor 53 is fixed on the device housing 51 and extends into the device housing 51 through a rotating shaft to be connected with the fan blades 52. An input port 510 is arranged on the side of the device housing 51 away from the driving motor 53, and an output port 511 is arranged on the end of the device housing 51 close to the air inlet 41. When the driving motor 53 drives the fan blades 52 to rotate, negative pressure is generated at the input port 510, so that air is sucked from the input port 510 and then sent into the air inlet 41 through the output port 511. Further preferably, the air blowing device 5 further comprises a battery, which is installed in the ventilation cavity 20 to provide power for the driving motor 53.

[0025] In this embodiment, in order to adjust the blowing direction, an adjusting grille 43 is arranged at the air outlet 40 on the handrail 4. The adjusting grille 43 specifically comprises a grille frame 431 embedded at the air outlet 40, a plurality of horizontal air guide blades 432 movably installed in the grille frame 431, and a plurality of vertical air guide blades 433 movably installed in the grille frame 431. The plurality of horizontal air guide blades 432 are parallel to each other and extend in the front-rear direction. The two ends of the horizontal air guide blades 432 are rotatably installed on the front-rear end faces of the grille frame 431. The plurality of vertical air guide blades 433 are parallel to each other and extend in the up-down direction. The two ends of the vertical air guide blades 433 are rotatably installed on the up-down two side end faces of the grille frame 431. Specifically, the horizontal air guide blades 432 are located above the vertical air guide blades 433. The horizontal air guide blades 432 are used to adjust the up-down air direction, and the vertical air guide blades 433 are used to adjust the horizontal air direction.

[0026] Further, the plurality of horizontal air guide blades 432 are connected by first linkage bars 434, so that the plurality of horizontal air guide blades 432 can realize synchronous swinging. The first linkage bars 434 are connected to one end or both ends of the plurality of horizontal air guide blades 432. The plurality of vertical air guide blades 433 are connected by second linkage bars 435, so that the plurality of vertical air guide blades 433 can realize synchronous swinging. The second linkage bars 435 are connected to one end or both ends of the plurality of vertical air guide blades 433.

[0027] Further, in order to conveniently adjust the transverse air guide sheet 432 and the vertical air guide sheet 433, the adjusting grid 43 further comprises an adjusting slider 436 which is slidingly fitted on one of the transverse air guide sheets 432 in the middle, the outer end of the adjusting slider 436 protrudes from the air outlet 40 for conveniently pushing, the inner end of the adjusting slider 436 extends into the air outlet 40 and is fitted with the vertical air guide sheet 433, specifically, the inner end of the adjusting slider 436 is provided with a bayonet, the bayonet is fitted on the vertical air guide sheet 433, when the adjusting slider 436 is pushed up and down, the transverse air guide sheet 432 can be driven to swing up and down, thereby realizing the adjustment of the up and down blowing angle, when the adjusting slider 436 is pushed forward and backward, the vertical air guide sheet 433 can be driven to swing forward and backward through the bayonet, thereby realizing the adjustment of the forward and backward blowing angle.

[0028] The above described in the specification of the present application is only an example of the present application, and the person skilled in the art can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as it does not deviate from the content of the specification of the present application or exceed the scope defined by the claims, which shall belong to the protection scope of the present application.

Claims

1. An office chair with armrest air blowing device, comprising a chair leg (1), a base (2), a chair back (3) and two side armrests (4), a gas pressure rod is arranged on the chair leg (1), the bottom of the base (2) is rotatably installed on the top end of the gas pressure rod, the lower part of the chair back (3) is provided with a connecting seat, and the chair back (3) is fixedly connected to the rear part of the base (2) through the connecting seat, characterized in that: a front-to-back through ventilation cavity (20) is arranged on the base (2), and an air blowing device (5) is arranged in the ventilation cavity (20); the armrest (4) is a hollow tubular structure, the two side armrests (4) are symmetrical to each other, the bottoms of the two side armrests (4) are inserted into the ventilation cavity (20) and are in communication with the air blowing device (5), and the tops of the two side armrests (4) extend to the two sides above the base (2); an air outlet (40) is arranged at the extending end of the armrest (4), and the air outlet (40) is aligned with the front of a person; When the air blowing device (5) works, cold air is poured into the bottom end of the armrest (4), and then the cold air is blown out from the air outlet (40) after passing through the channel in the armrest (4).

2. The office chair with armrest air blowing device according to claim 1, characterized in that: the bottoms of the two side armrests (4) are connected to each other to form an integrated body, an air inlet (41) is arranged at the connecting position, and the air blowing device (5) is arranged at the air inlet (41); The air blowing device (5) comprises a device housing (51) fixed on the air inlet (41), fan blades (52) rotatably installed in the device housing (51) and a driving motor (53) installed outside the device housing (51), the driving motor (53) is fixed on the device housing (51) and extends into the device housing (51) through a rotating shaft to be connected with the fan blades (52), an input port (510) is arranged on the side of the device housing (51) away from the driving motor (53), and an output port (511) is arranged on the end of the device housing (51) close to the air inlet (41).

3. The office chair with armrest air blowing device according to claim 2, characterized in that: the air blowing device (5) further comprises a storage battery, and the storage battery is installed in the ventilation cavity (20) to provide electric energy for the driving motor (53).

4. The office chair with armrest air blowing device according to claim 1, characterized in that: an adjusting grille (43) is arranged at the air outlet (40) of the armrest (4), the adjusting grille (43) comprises a grille frame (431) embedded at the air outlet (40), a plurality of horizontal air guide blades (432) movably installed in the grille frame (431) and a plurality of vertical air guide blades (433) movably installed in the grille frame (431), the plurality of horizontal air guide blades (432) are parallel to each other and extend in the front-to-back direction, and the plurality of vertical air guide blades (433) are parallel to each other and extend in the up-to-down direction.

5. The office chair with armrest air blowing device according to claim 4, characterized in that: ​ ​ ​ ​ A plurality of said transverse air guiding sheets (432) are connected by a first linkage strip (434), and a plurality of said vertical air guiding sheets (433) are connected by a second linkage strip (435).

6. The office chair with handrails and air blowing device according to claim 4, characterized in that: The adjusting grid (43) further comprises an adjusting sliding block (436) which is slidingly fitted on one of the middle transverse air guiding sheets (432), and the outer end of the adjusting sliding block (436) protrudes from the air outlet (40), and the inner end of the adjusting sliding block (436) extends into the air outlet (40) and is fitted with the vertical air guiding sheet (433).

7. The office chair with hand-rest blower device according to claim 1, characterized in that: The opening angle of the air outlet (40) is set to be between 50° and 75°, and the length of the air outlet (40) is set to be 12cm-15cm.

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