阅读说明：本技术 一种便于拼接的沙发及其使用方法 (Sofa convenient to splice and using method thereof ) 是由 唐伟东 于 2021-09-28 设计创作，主要内容包括：本发明公开了一种便于拼接的沙发及其使用方法,属于家具技术领域,包括由底座、背座和侧座组成的沙发机构,沙发机构设置有两组,还包括：安装槽,安装槽开设于其中一个底座的侧端；隐藏槽,隐藏槽开设于另外一个底座的侧端,隐藏槽与安装槽相互靠近；L型插槽,L型插槽开设于隐藏槽的侧壁；L型插块,L型插块与L型插槽可拆卸插接配合；矩形插槽,矩形插槽开设于另外一个底座的侧端,矩形插槽位于隐藏槽的外侧；矩形插块,矩形插块与矩形插槽可拆卸插接配合；双向滑动机构,双向滑动机构设置于安装槽内。本发明旨在解决沙发不能牢固的拼接在一起并不发生分离的技术问题,同时还能实现对气流的过滤,进而进行供暖或者凉风供应。(The invention discloses a sofa convenient to splice and a use method thereof, belonging to the technical field of furniture, and comprising a sofa mechanism consisting of a base, a back seat and side seats, wherein the sofa mechanism is provided with two groups, and the sofa mechanism also comprises: the mounting groove is formed in the side end of one of the bases; the hidden groove is formed in the side end of the other base and is close to the mounting groove; the L-shaped slot is arranged on the side wall of the hidden slot; the L-shaped insertion block is detachably matched with the L-shaped insertion slot in an inserting manner; the rectangular slot is arranged at the side end of the other base and is positioned at the outer side of the hidden slot; the rectangular insertion block is detachably matched with the rectangular insertion slot in an inserted manner; and the bidirectional sliding mechanism is arranged in the mounting groove. The invention aims to solve the technical problem that the sofas cannot be firmly spliced together and cannot be separated, and meanwhile, the filtering of airflow can be realized, so that heating or cold air supply is carried out.)

1. The utility model provides a sofa convenient to concatenation, includes by sofa mechanism (1) that base (101), back of the body seat (102) and side seat (103) are constituteed, sofa mechanism (1) is provided with two sets ofly, its characterized in that still includes:

the mounting groove (4) is formed in the side end of one base (101);

the hidden groove (12) is arranged at the side end of the other base (101), and the hidden groove (12) is close to the mounting groove (4);

the L-shaped slot (13), the L-shaped slot (13) is arranged on the side wall of the hidden slot (12);

the L-shaped inserting block (7) is detachably matched with the L-shaped inserting groove (13) in an inserting manner;

the rectangular slot (14) is arranged at the side end of the other base (101), and the rectangular slot (14) is positioned at the outer side of the hidden slot (12);

the rectangular insertion block (6), the rectangular insertion block (6) and the rectangular insertion slot (14) are detachably inserted and matched;

the bidirectional sliding mechanism (5) is arranged in the mounting groove (4), the bidirectional sliding mechanism (5) is respectively connected with the rectangular insertion block (6) and the L-shaped insertion block (7), the bidirectional sliding mechanism (5) drives the L-shaped insertion block (7) to longitudinally move, and the bidirectional sliding mechanism (5) drives the rectangular insertion block (6) to transversely move; and

and the transmission mechanism (8) is arranged in the mounting groove (4), and the transmission mechanism (8) is connected with the bidirectional sliding mechanism (5) to drive the bidirectional sliding mechanism (5).

2. The sofa convenient for splicing according to claim 1, wherein the bidirectional sliding mechanism (5) comprises a longitudinal driving mechanism and a transverse driving mechanism, the longitudinal driving mechanism is connected with the L-shaped insert block (7) for driving, and the transverse driving mechanism is connected with the rectangular insert block (6) for driving.

3. The sofa convenient for splicing according to claim 1, wherein the longitudinal driving mechanism comprises a longitudinal T-shaped sliding groove (501), a longitudinal rack (503) and a longitudinal T-shaped sliding block (504), the longitudinal T-shaped sliding groove (501) is arranged on the inner wall of the bottom of the mounting groove (4), the longitudinal T-shaped sliding block (504) is arranged in the longitudinal T-shaped sliding groove (501) in a sliding manner, the top of the longitudinal T-shaped sliding block (504) extends to the upper side of the longitudinal T-shaped sliding groove (501), the longitudinal rack (503) is fixedly arranged on the top of the longitudinal T-shaped sliding block (504), and the L-shaped insert block (7) is fixedly arranged at the side end of the longitudinal rack (503) close to the L-shaped slot (13);

horizontal actuating mechanism includes horizontal T type spout (502), horizontal rack (505) and horizontal T type slider (506), the bottom inner wall in mounting groove (4) is seted up in horizontal T type spout (502), horizontal T type slider (506) slide and set up in horizontal T type spout (502), and the top of horizontal T type slider (506) extends to the upside of horizontal T type spout (502), horizontal rack (505) are fixed to be set up in the top of horizontal T type slider (506), rectangle inserted block (6) are fixed to be set up in the side that horizontal rack (505) is close to rectangle slot (14).

4. The sofa easy to splice according to claim 3, wherein the transmission mechanism (8) comprises a transmission spur gear (801), a rotation shaft (802), a first bevel gear (803), a transmission shaft (804) and a second bevel gear (805), the rotating shaft (802) is rotatably arranged on the inner wall of the bottom of the mounting groove (4), the transmission straight gear (801) is fixedly arranged on the circumferential surface of the rotating shaft (802), the first bevel gear (803) is fixedly arranged at the top of the rotating shaft (802), the transmission shaft (804) is rotatably arranged on the inner wall of the side part of the mounting groove (4), the second bevel gear (805) is fixedly arranged at one end of the transmission shaft (804), and the second bevel gear (805) and the first bevel gear (803) are meshed with each other, the other end of the transmission shaft (804) penetrates through the mounting groove (4) in a rotating mode and extends to the outer side of the sofa mechanism (1).

5. The sofa convenient for splicing according to claim 4, further comprising an elastic gear positioning mechanism (9), wherein the elastic gear positioning mechanism (9) is disposed on the sofa mechanism (1), the elastic gear positioning mechanism (9) is connected with the transmission mechanism (8) for positioning, and wherein:

the elastic gear clamping mechanism (9) comprises a telescopic rod (901), a first spring (902), clamping slide blocks (903), a clamping rack (904), a clamping gear (905), an operating groove (907) and clamping chutes (908), wherein the operating groove (907) is formed in the end part, facing the wall surface, of the other back seat (102), the end part of the transmission shaft (804) extends into the operating groove (907), the clamping gear (905) is fixedly arranged at the end part of the transmission shaft (804), the outer end of the clamping gear (905) is flush with the back seat (102), the clamping slide blocks (903), the clamping groove (905), the operating groove (907) and the clamping chutes (908) are respectively provided with two clamping chutes (908), the two clamping chutes (908) are respectively formed in the lateral inner wall of the operating groove (907), the two clamping slide blocks (903) are respectively arranged in the two clamping chutes (908) in a sliding mode, and the clamping rack (904) is fixedly arranged between the two clamping slide blocks (903), the telescopic rod (901) and the first spring (902) are fixedly arranged between the bottom of the clamping slide block (903) and the inner wall of the bottom of the clamping chute (908), and the first spring (902) is movably sleeved on the circumferential surface of the telescopic rod (901);

when the L-shaped insert block (7) is completely inserted and matched with or completely separated from the L-shaped slot (13), the clamping rack (904) is meshed with the clamping gear (905);

when the rectangular plug block (6) is completely inserted and matched with the rectangular slot (14) or completely separated from the rectangular slot, the clamping rack (904) is meshed with the clamping gear (905).

6. The sofa convenient for splicing according to claim 5, further comprising two sets of air passage mechanisms (3), wherein the air passage mechanisms (3) are provided in two sets of air passage mechanisms (3) respectively provided in the two sets of sofa mechanisms (1), wherein:

every group airway mechanism (3) all include U type air flue (301), rectangle air flue (302) and gas pocket (303), one side end bottom in side seat (103) is seted up in U type air flue (301), and in U type air flue (301) extended to base (101), rectangle air flue (302) are seted up in side seat (103), and rectangle air flue (302) are linked together with U type air flue (301), gas pocket (303) are provided with a plurality ofly, and are a plurality ofly another side top in side seat (103) is evenly seted up in gas pocket (303), gas pocket (303) are linked together with rectangle air flue (302).

7. The sofa convenient to splice of claim 6, further comprising an air flow heating mechanism (10), wherein said air flow heating mechanism (10) is disposed in the U-shaped air duct (301), wherein:

airflow heating mechanism (10) are including heating rod (1001) and air exhauster (1002), heating rod (1001) are fixed to be set up on the bottom inner wall of U type air flue (301), air exhauster (1002) are provided with a plurality ofly, and are a plurality of heating rod (1001) are even fixed to be set up between the inner wall of U type air flue (301).

8. The sofa convenient for splicing according to claim 7, further comprising a detachable filtering mechanism (11), wherein the detachable filtering mechanism (11) is detachably disposed on the side seat (103), the detachable filtering mechanism (11) comprises a first filtering mechanism, a second filtering mechanism, a connecting mechanism and an elastic plugging mechanism, the first filtering mechanism is connected with the second filtering mechanism through the connecting mechanism, the first filtering mechanism and the second filtering mechanism are slidably and detachably disposed in the U-shaped air passage (301), and the first filtering mechanism is connected with the side seat (103) through the elastic plugging mechanism.

9. The sofa convenient to splice according to claim 8, wherein the top inner walls of the two U-shaped air ducts (301) are opened with a first sliding chute (1101);

the first filtering mechanism comprises a first net frame (1107) and two first sliding blocks (1104), the two first sliding blocks (1104) are arranged, the two first sliding blocks (1104) are fixedly arranged at the top of the first net frame (1107), the first sliding blocks (1104) are in sliding fit with the first sliding grooves (1101), the first net frame (1107) is in sliding fit with the U-shaped air passage (301), and a dustproof net cover is arranged in the first net frame (1107);

the second filtering mechanism comprises a second net frame (1108) and two second sliding blocks (1105), the two second sliding blocks (1105) are arranged, the two second sliding blocks (1105) are fixedly arranged on the top of the second net frame (1108), the second sliding blocks (1105) are in sliding fit with the first sliding chute (1101), the second net frame (1108) is in sliding fit with the U-shaped air passage (301), and an activated carbon filtering net cover is arranged in the second net frame (1108);

the connecting mechanism comprises two connecting rods (1106), and each connecting rod (1106) is fixedly arranged between the second sliding block (1105) and the first sliding block (1104);

the elastic inserting mechanism comprises an accommodating groove (1102), a first jack (1103), fixing blocks (1109), an inserting rod (1110), a second spring (1111), a poking block (1112), a second jack (1113) and first inserting grooves (1114), wherein the accommodating groove (1102) is arranged at the side end of the side seat (103), the accommodating groove (1102) is positioned at the upper side of the U-shaped air passage (301), the number of the first jack (1103) is two, the two first jacks (1103) are respectively arranged at the lateral inner walls of the accommodating groove (1102), the number of the fixing blocks (1109) is two, the two fixing blocks (1109) are respectively and fixedly arranged between the upper inner wall and the lower inner wall of the accommodating groove (1102), the number of the second jacks (1113) and the number of the first inserting grooves (1114) are respectively arranged at the side ends of the two fixing blocks (1109), and the number of the first jacks (1114) are respectively arranged at the end parts, close to each other, of the two first sliding blocks (1104), inserted bar (1110) and setting aside piece (1112) all are provided with two, every inserted bar (1110) all are pegged graft in first jack (1103), second jack (1113) and first slot (1114), the one end of inserted bar (1110) is located between two fixed blocks (1109), two setting aside piece (1112) fixed respectively in the tip that two inserted bars (1110) are close to each other, second spring (1111) is fixed to be set up between two setting aside piece (1112).

10. A method for using the sofa convenient for splicing, which is characterized in that the sofa convenient for splicing of any one of claims 1-9 is used, and comprises the following steps:

s1, splicing: the clamping rack (904) is pulled upwards to separate the clamping rack (904) from the clamping gear (905), the clamping gear (905) is rotated, and finally the longitudinal rack (503) moves towards the L-shaped slot (13), so that the L-shaped insert block (7) is inserted into the L-shaped slot (13), and meanwhile, the transverse rack (505) moves towards the rectangular slot (14), so that the rectangular insert block (6) is inserted into the rectangular slot (14), and finally, the two groups of sofa mechanisms (1) are spliced with each other;

s2, blocking: the clamping rack (904) is pushed downwards, so that the clamping rack (904) is meshed with the clamping gear (905), and then the self-locking of the transmission mechanism (8) is realized;

s3, mounting a detachable filtering mechanism (11): the two shifting blocks (1112) are extruded to enable the two shifting blocks (1112) to approach each other, the first sliding block (1104) and the second sliding block (1105) are pushed inwards, when the second sliding block (1105) abuts against the first sliding groove (1101), the two shifting blocks (1112) are not extruded any more, the second spring (1111) is reset to enable the insert rod (1110) to be inserted into the first jack (1103), and finally the detachable filter mechanism (11) is installed;

s4, heating or cooling air supply:

in winter, the heating rod (1001) and the exhaust fan (1002) are braked, external air flow is sucked in by the exhaust fan (1002), the air flow is heated by the heating rod (1001) to form hot air flow, and the hot air flow is finally discharged through the air holes (303), so that heating in winter is realized;

in summer, the exhaust fan (1002) is braked independently, so that cool air supply is realized.

Technical Field

The invention relates to the technical field of furniture, in particular to a sofa convenient to splice and a using method thereof.

Background

The sofa is a foreign word and is formed according to the sound translation of English word sofa, is a multi-seat chair with cushions, is a backrest chair with springs or thick foamed plastics and the like, has armrests on two sides, is a kind of soft furniture, the origin of the sofa can be traced back to ancient Egypt about 2000 before the first year of the Gongyuan, but the soft sofa with real meaning appears in the end of the sixteen century to the beginning of the seventeen century, the sofa at the time mainly uses natural elastic materials such as horsehair, bird feather, plant fluff and the like as fillers, fabric covering surfaces such as velvet, embroidery and the like are used outside to form a soft human body contact surface, for example, a Huaxingle (Farthingle) chair which is popular in Europe at the time and used by the public is one of the earliest sofa chairs, the development history of Chinese is reviewed, the ' Yujiu ' of the generation is firstly pushed up, and the seat with thick-layer fabric depicted in Western-Job's groin, can be regarded as the ancestor of the Chinese sofa.

The existing sofa is formed by combining a plurality of sofas, but in the using process, as a user sits on the sofa to move, the combined sofas are very easy to separate, and then the user is required to combine the sofas together again, so that the technical problem that how to solve the problem that the sofas cannot be firmly spliced together and cannot be separated is urgent to solve.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a sofa convenient to splice and a using method thereof, and aims to solve the technical problem that the sofa cannot be spliced together firmly and cannot be separated.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a sofa convenient to concatenation, includes the sofa mechanism of constituteing by base, back of the body seat and side seat, sofa mechanism is provided with two sets ofly, still includes:

the mounting groove is formed in the side end of one of the bases;

the hidden groove is formed in the side end of the other base, and the hidden groove and the mounting groove are close to each other;

the L-shaped slot is arranged on the side wall of the hidden slot;

the L-shaped insertion block is detachably matched with the L-shaped insertion slot in an inserted manner;

the rectangular slot is arranged at the side end of the other base and is positioned at the outer side of the hidden slot;

the rectangular insertion block is detachably matched with the rectangular insertion slot in an inserted manner;

the bidirectional sliding mechanism is arranged in the mounting groove, the bidirectional sliding mechanism is respectively connected with the rectangular insertion block and the L-shaped insertion block, the bidirectional sliding mechanism drives the L-shaped insertion block to move longitudinally, and the bidirectional sliding mechanism drives the rectangular insertion block to move transversely; and

and the transmission mechanism is arranged in the mounting groove and is connected with the bidirectional sliding mechanism to drive the bidirectional sliding mechanism. The invention aims to solve the technical problem that sofas cannot be firmly spliced together and cannot be separated.

As a preferable scheme of the invention, the bidirectional sliding mechanism comprises a longitudinal driving mechanism and a transverse driving mechanism, the longitudinal driving mechanism is connected with the L-shaped insertion block to realize driving, and the transverse driving mechanism is connected with the rectangular insertion block to realize driving.

As a preferred scheme of the present invention, the longitudinal driving mechanism includes a longitudinal T-shaped sliding slot, a longitudinal rack, and a longitudinal T-shaped sliding block, the longitudinal T-shaped sliding slot is disposed on the inner wall of the bottom of the mounting groove, the longitudinal T-shaped sliding block is slidably disposed in the longitudinal T-shaped sliding slot, the top of the longitudinal T-shaped sliding block extends to the upper side of the longitudinal T-shaped sliding slot, the longitudinal rack is fixedly disposed on the top of the longitudinal T-shaped sliding block, and the L-shaped insert block is fixedly disposed at the side end of the longitudinal rack close to the L-shaped slot;

horizontal actuating mechanism includes horizontal T type spout, horizontal rack and horizontal T type slider, the bottom inner wall in the mounting groove is seted up to horizontal T type spout, horizontal T type slider slides and sets up in horizontal T type spout, and the top of horizontal T type slider extends to the upside of horizontal T type spout, horizontal rack is fixed to be set up in the top of horizontal T type slider, the rectangle inserted block is fixed to be set up in the side that horizontal rack is close to the rectangle slot.

As a preferable scheme of the present invention, the transmission mechanism includes a transmission spur gear, a rotating shaft, a first bevel gear, a transmission shaft, and a second bevel gear, the rotating shaft is rotatably disposed on an inner wall of a bottom portion of the mounting groove, the transmission spur gear is fixedly disposed on a circumferential surface of the rotating shaft, the first bevel gear is fixedly disposed on a top portion of the rotating shaft, the transmission shaft is rotatably disposed on an inner wall of a side portion of the mounting groove, the second bevel gear is fixedly disposed at one end of the transmission shaft, the second bevel gear is engaged with the first bevel gear, and another end of the transmission shaft rotatably penetrates through the mounting groove and extends to an outer side of the sofa mechanism.

As a preferred scheme of the present invention, the sofa further comprises an elastic gear positioning mechanism, the elastic gear positioning mechanism is arranged on the sofa mechanism, the elastic gear positioning mechanism is connected with the transmission mechanism to realize positioning, wherein:

the elastic gear clamping mechanism comprises a telescopic rod, a first spring, a clamping slide block, a clamping rack, a clamping gear, an operation groove and a clamping sliding groove, the operation groove is arranged at the end part of the other back seat facing the wall surface, the end part of the transmission shaft extends into the operation groove, the clamping gear is fixedly arranged at the end part of the transmission shaft, the outer end of the clamping gear is kept flat with the back seat, two clamping slide blocks, two clamping slide grooves 905), two operating grooves and two clamping slide grooves are arranged, the two clamping slide grooves are respectively arranged on the lateral inner wall of the operating groove, the two clamping slide blocks are respectively arranged in the two clamping slide grooves in a sliding manner, the clamping rack is fixedly arranged between the two clamping slide blocks, the telescopic rod and the first spring are fixedly arranged between the bottom of each clamping slide block and the inner wall of the bottom of the clamping chute, and the first spring is movably sleeved on the circumferential surface of the telescopic rod;

when the L-shaped plug block is completely inserted and matched with or separated from the L-shaped slot, the clamping rack is meshed with the clamping gear;

when the rectangular insertion block is completely inserted and matched with the rectangular slot or completely separated from the rectangular slot, the clamping rack is meshed with the clamping gear.

As a preferred scheme of the present invention, the sofa further comprises two sets of air passage mechanisms, wherein the two sets of air passage mechanisms are respectively arranged in the two sets of sofa mechanisms, wherein:

every air flue mechanism all includes U type air flue, rectangle air flue and gas pocket, U type air flue sets up in one side end bottom of side seat, and in U type air flue extended to the base, the rectangle air flue sets up in the side seat, and the rectangle air flue is linked together with U type air flue, the gas pocket is provided with a plurality ofly, and is a plurality of the another side top of side seat is evenly set up to the gas pocket, the gas pocket is linked together with the rectangle air flue.

As a preferable scheme of the present invention, the present invention further comprises an airflow heating mechanism, the airflow heating mechanism is disposed in the U-shaped air passage, wherein:

airflow heating mechanism includes heater rod and air exhauster, the heater rod is fixed to be set up on the bottom inner wall of U type air flue, the air exhauster is provided with a plurality ofly, and is a plurality of the heater rod is even fixed to be set up between the inner wall of U type air flue.

As a preferable scheme of the invention, the air purifier further comprises a detachable filtering mechanism, the detachable filtering mechanism is detachably arranged on the side seat, the detachable filtering mechanism comprises a first filtering mechanism, a second filtering mechanism, a connecting mechanism and an elastic inserting mechanism, the first filtering mechanism is connected with the second filtering mechanism through the connecting mechanism, the first filtering mechanism and the second filtering mechanism are slidably and detachably arranged in the U-shaped air passage, and the first filtering mechanism is connected with the side seat through the elastic inserting mechanism.

As a preferred scheme of the invention, the inner walls of the tops of the two U-shaped air passages are both provided with a first sliding chute;

the first filtering mechanism comprises two first screen frames and two first sliding blocks, the two first sliding blocks are fixedly arranged at the tops of the first screen frames, the first sliding blocks are in sliding fit with the first sliding grooves, the first screen frames are in sliding fit with the U-shaped air passages, and dust-proof screen covers are arranged in the first screen frames;

the second filtering mechanism comprises two second net frames and two second sliding blocks, the two second sliding blocks are fixedly arranged at the tops of the second net frames, the second sliding blocks are in sliding fit with the first sliding grooves, the second net frames are in sliding fit with the U-shaped air passages, and activated carbon filtering net covers are arranged in the second net frames;

the connecting mechanism comprises two connecting rods, and each connecting rod is fixedly arranged between the second sliding block and the first sliding block;

the elastic insertion mechanism comprises a containing groove, first insertion holes, fixed blocks, insertion rods, a second spring, a poking block, second insertion holes and first insertion grooves, the containing groove is formed in the side end of the side seat and is located on the upper side of the U-shaped air passage, the number of the first insertion holes is two, the two first insertion holes are formed in the lateral inner walls of the containing groove respectively, the number of the fixed blocks is two, the two fixed blocks are fixedly arranged between the upper inner wall and the lower inner wall of the containing groove, the number of the second insertion holes and the number of the first insertion grooves are two, the two second insertion holes are formed in the side ends of the two fixed blocks respectively, the two first insertion grooves are formed in the end portions, close to each other, of the two first sliding blocks, the insertion rods and the poking block are two, each insertion rod is inserted into the first insertion hole, the second insertion hole and the first insertion groove, and one end of the insertion rod is located between the two fixed blocks, the two poking blocks are respectively and fixedly arranged at the end parts of the two inserted rods, which are close to each other, and the second spring is fixedly arranged between the two poking blocks.

A sofa use method convenient for splicing comprises the following steps:

s1, splicing: the clamping rack is pulled upwards to separate the clamping rack from the clamping gear, the clamping gear can rotate at the moment, the rotation of a transmission shaft is realized through the clamping gear, the rotation of the transmission shaft drives a second bevel gear to rotate, the rotation of the second bevel gear drives a first bevel gear to rotate, and then the rotation of a rotating shaft is realized, the rotation of the rotating shaft drives a transmission straight gear to rotate, so that a transverse rack and a longitudinal rack are respectively driven to transversely move and longitudinally move, the longitudinal rack moves towards an L-shaped slot, an L-shaped insert block can be inserted into the L-shaped slot at the moment, meanwhile, the transverse rack moves towards a rectangular slot, and the rectangular insert block can be inserted into the rectangular slot at the moment, so that the splicing of two sofa mechanisms is realized;

s2, blocking: when the L-shaped insert block is completely inserted into and matched with the L-shaped slot and the rectangular insert block is completely inserted into and matched with the rectangular slot, the clamping rack is pushed downwards to enable the clamping rack to be meshed with the clamping gear, the clamping rack is not easy to separate from the clamping gear through the good elastic action of the first spring, and then the self-locking of the transmission mechanism is realized;

s3, mounting a detachable filtering mechanism: the two shifting blocks are extruded to enable the two shifting blocks to be close to each other, at the moment, the second spring is compressed, finally, the inserted bar cannot prevent the first sliding block, the second sliding block and the first sliding groove from sliding, then, the first sliding block and the second sliding block are pushed inwards to enable the second sliding block to be abutted against the first sliding groove, the two shifting blocks are not extruded any more, and after the inserted bar is inserted into the first insertion hole, the detachable filtering mechanism can be installed;

s4, heating or cooling air supply: the heating rod and the exhaust fan are braked, external air flow is sucked in by the exhaust fan and finally exhausted through the plurality of air holes, the heating rod can be used for heating, and the air flow is heated to form hot air flow so as to realize heating in winter;

in summer, the exhaust fan is braked independently, so that cool air supply can be realized.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the invention is convenient to realize the firm splicing and the non-separation of two groups of sofa mechanisms, the invention ensures that the two groups of sofa mechanisms can not be separated from left to right or front to back by the arrangement of the rectangular insert block and the rectangular insert groove and the interaction of the L-shaped insert groove and the L-shaped insert block, finally realizes the firm splicing of the two groups of sofa mechanisms, when the two groups of sofa mechanisms are spliced, although the two groups of sofa mechanisms are not easy to separate, the front ends of two bases are held by hands to push the two bases, the longitudinal rack bar can react with the transmission straight gear at the moment, so that the transmission straight gear rotates, and then the two groups of sofa mechanisms are separated, the self-locking of a rotating shaft can be realized by the arrangement of the elastic gear clamping mechanism, the rotation of the transmission straight gear can not be realized, and then the two groups of sofa mechanisms can not be separated, the self-locking of the transmission mechanism can be realized by the mutual meshing of the clamping rack bar and the clamping gear, specifically, when upwards pulling the screens rack, the screens rack takes place to separate with the screens gear, the screens gear can rotate this moment, realize the transmission shaft through driving the screens gear and rotate, realize the separation or the concatenation of two sets of sofa mechanisms then, when the screens rack is in the pristine condition, screens rack and screens gear engagement, through the good elastic action of first spring this moment, make screens rack and the difficult separation of screens gear, realize drive mechanism's auto-lock then.

(2) The sofa can be operated quickly by the arrangement of the transmission mechanism, the use of the sofa mechanism is not influenced, the operation of the transverse rack and the operation of the longitudinal rack can be realized simultaneously by the transmission mechanism, the transmission shaft is rotated, the transmission shaft rotates to drive the second bevel gear to rotate, the second bevel gear rotates to drive the first bevel gear to rotate, and then the rotation of the rotating shaft is realized.

(3) The detachable filter mechanism is convenient to mount and dismount quickly through a unique detachable design, when the detachable filter mechanism needs to be dismounted, the two shifting blocks are extruded to enable the two shifting blocks to approach each other, the second spring is compressed at the moment, the end part of the inserted rod is finally separated from the first jack, then the first sliding block and the second sliding block are slid to be drawn out outwards, and when the detachable filter mechanism needs to be dismounted, the inserted rod and the first jack are only required to be inserted into each other to realize good heating or cold air supply.

Drawings

FIG. 1 is a first perspective view of a sofa of the present invention that is easy to splice;

FIG. 2 is a first exploded view of a sofa of the present invention that is easy to splice;

FIG. 3 is a second exploded view of a sofa of the present invention that is easy to splice;

FIG. 4 is an enlarged view of the sofa of FIG. 3 at A for easy splicing according to the present invention;

FIG. 5 is an enlarged view of the sofa of FIG. 3 at B for easy splicing according to the present invention;

FIG. 6 is an enlarged view of the sofa of FIG. 3 at C of the present invention for easy splicing;

FIG. 7 is a perspective view of the two-way sliding mechanism, the transmission mechanism and the elastic gear positioning mechanism of the sofa of the present invention for easy splicing;

FIG. 8 is an exploded view of the bi-directional sliding mechanism, the transmission mechanism and the elastic gear positioning mechanism of the sofa of the present invention;

FIG. 9 is a perspective view of a detachable filter mechanism of a sofa of the present invention for easy splicing;

FIG. 10 is an exploded view of a detachable filter mechanism of a sofa of the present invention in an easy to assemble configuration;

FIG. 11 is a second perspective view of a sofa of the present invention that is easy to splice;

FIG. 12 is an enlarged view of the sofa of the present invention at D of FIG. 11 for easy splicing;

fig. 13 is a cut-away perspective view of a sofa of the present invention that facilitates splicing.

The reference numbers in the figures illustrate:

1. a sofa mechanism; 101. a base; 102. a back seat; 103. a side seat; 2. a universal wheel; 3. an airway mechanism; 301. a U-shaped air passage; 302. a rectangular air passage; 303. air holes; 4. mounting grooves; 5. a bidirectional sliding mechanism; 501. a longitudinal T-shaped chute; 502. a transverse T-shaped chute; 503. a longitudinal rack; 504. a longitudinal T-shaped slider; 505. a transverse rack; 506. a transverse T-shaped slider; 6. a rectangular insert block; 7. an L-shaped insert block; 8. a transmission mechanism; 801. a transmission spur gear; 802. a rotating shaft; 803. a first bevel gear; 804. a drive shaft; 805. a second bevel gear; 9. the elastic gear clamping mechanism; 901. a telescopic rod; 902. a first spring; 903. a clamping slide block; 904. a clamping rack; 905. a blocking gear; 907. an operation slot; 908. a clamping chute; 10. an air flow heating mechanism; 1001. a heating rod; 1002. an exhaust fan; 11. the filtering mechanism can be disassembled; 1101. a first chute; 1102. accommodating grooves; 1103. a first jack; 1104. a first slider; 1105. a second slider; 1106. a connecting rod; 1107. a first frame; 1108. a second frame; 1109. a fixed block; 1110. inserting a rod; 1111. a second spring; 1112. a shifting block; 1113. a second jack; 1114. a first slot; 12. hiding the groove; 13. an L-shaped slot; 14. a rectangular slot.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-13, a sofa for facilitating splicing, comprising:

the sofa mechanism 1 comprises a base 101, a back seat 102 and side seats 103, wherein the sofa mechanism 1 is provided with two groups, and universal wheels 2 are fixedly arranged at the four corners of the bottoms of the two bases 101;

in this embodiment: here, the connection relationship and the position relationship are obvious in the common knowledge of those skilled in the art, so that the detailed description is not believed to be provided;

the mounting groove 4 is formed in the side end of one base 101;

in this embodiment: the installation groove 4 is necessary, and the installation groove 4 is used for realizing hidden installation, so that no obvious difference exists between the two groups of sofa mechanisms 1 after being spliced and the shape of a common sofa;

the hidden groove 12 is formed in the side end of the other base 101, and the hidden groove 12 is close to the mounting groove 4;

in this embodiment: the hidden groove 12 is necessary, and the hidden groove 12 is also installed in a hidden way, so that the two groups of sofa mechanisms 1 are spliced and have no obvious difference with the modeling of a common sofa;

the L-shaped slot 13 is formed in the side wall of the hidden slot 12, and the L-shaped slot 13 is formed in the side wall of the hidden slot 12;

the L-shaped inserting block 7 is detachably matched with the L-shaped inserting groove 13 in an inserting manner;

in this embodiment: the L-shaped slot 13 and the L-shaped insert 7 are necessary, and after the L-shaped slot 13 and the L-shaped insert 7 are completely inserted, due to the special shape and structure, the two sets of sofa mechanisms 1 are not separated from each other, and it should be explained that: when the two bases 101 are contacted with each other and the L-shaped insertion block 7 is in the initial state, the L-shaped insertion block 7 can be completely accommodated in the hidden groove 12, and then when the L-shaped insertion block 7 is driven, the L-shaped insertion block 7 is inserted into the L-shaped insertion groove 13 along the inner wall of the hidden groove 12;

the rectangular slot 14 is formed in the side end of the other base 101, and the rectangular slot 14 is located on the outer side of the hidden slot 12;

the rectangular insertion block 6 is detachably matched with the rectangular insertion slot 14 in an inserted manner;

in this embodiment: the arrangement of the rectangular insertion block 6 and the rectangular insertion slot 14 is necessary, after the L-shaped insertion slot 13 is matched with the L-shaped insertion block 7, the two groups of sofa mechanisms 1 cannot be separated from each other from left to right, but the two groups of sofa mechanisms 1 can still be separated from front to back, at the moment, after the rectangular insertion block 6 is matched with the rectangular insertion slot 14, and the L-shaped insertion block 7 is matched with the rectangular insertion slot 14 to interact with each other, the two groups of sofa mechanisms 1 cannot be separated from left to right or front to back, and finally, the two groups of sofa mechanisms 1 are firmly spliced;

two-way sliding mechanism 5, two-way sliding mechanism 5 sets up in mounting groove 4, two-way sliding mechanism 5 links to each other with rectangle inserted block 6 and L type inserted block 7 respectively, 5 drive L type inserted block 7 longitudinal movement of two-way sliding mechanism, 5 drive rectangle inserted block 6 lateral shifting of two-way sliding mechanism, two-way sliding mechanism 5 includes vertical actuating mechanism and lateral driving mechanism, vertical actuating mechanism links to each other with L type inserted block 7 and realizes the drive, lateral driving mechanism links to each other with rectangle inserted block 6 and realizes the drive, it is concrete:

the longitudinal driving mechanism comprises a longitudinal T-shaped sliding groove 501, a longitudinal rack 503 and a longitudinal T-shaped sliding block 504, the longitudinal T-shaped sliding groove 501 is formed in the inner wall of the bottom of the mounting groove 4, the longitudinal T-shaped sliding block 504 is arranged in the longitudinal T-shaped sliding groove 501 in a sliding mode, the top of the longitudinal T-shaped sliding block 504 extends to the upper side of the longitudinal T-shaped sliding groove 501, the longitudinal rack 503 is fixedly arranged at the top of the longitudinal T-shaped sliding block 504, and the L-shaped insert block 7 is fixedly arranged at the side end, close to the L-shaped slot 13, of the longitudinal rack 503;

the transverse driving mechanism comprises a transverse T-shaped sliding groove 502, a transverse rack 505 and a transverse T-shaped sliding block 506, the transverse T-shaped sliding groove 502 is formed in the inner wall of the bottom of the mounting groove 4, the transverse T-shaped sliding block 506 is arranged in the transverse T-shaped sliding groove 502 in a sliding mode, the top of the transverse T-shaped sliding block 506 extends to the upper side of the transverse T-shaped sliding groove 502, the transverse rack 505 is fixedly arranged at the top of the transverse T-shaped sliding block 506, and the rectangular inserting block 6 is fixedly arranged at the side end, close to the rectangular slot 14, of the transverse rack 505;

in this embodiment: the longitudinal T-shaped slider 504 can longitudinally slide in the longitudinal T-shaped sliding slot 501, so that the longitudinal rack 503 can slide along with the longitudinal T-shaped slider, and finally the insertion between the L-shaped insert 7 and the L-shaped slot 13 is realized, the transverse T-shaped slider 506 can transversely slide in the transverse T-shaped sliding slot 502, so that the transverse rack 505 can slide along with the transverse T-shaped slider, and finally the insertion between the rectangular insert 6 and the rectangular slot 14 is realized, which needs to be described: the rectangular insertion block 6 and the L-shaped insertion block 7 run in different directions and cannot interfere with each other, and when the L-shaped insertion block 7 is not inserted into the L-shaped slot 13, the longitudinal rack 503 is not in contact with the transverse rack 505;

drive mechanism 8, drive mechanism 8 set up in mounting groove 4, and drive mechanism 8 links to each other with two-way slide 5 in order to drive two-way slide 5, and is specific: the transmission mechanism 8 comprises a transmission straight gear 801, a rotating shaft 802, a first bevel gear 803, a transmission shaft 804 and a second bevel gear 805, the rotating shaft 802 is rotatably arranged on the inner wall of the bottom of the installation groove 4, the transmission straight gear 801 is fixedly arranged on the circumferential surface of the rotating shaft 802, the first bevel gear 803 is fixedly arranged on the top of the rotating shaft 802, the transmission shaft 804 is rotatably arranged on the inner wall of the side part of the installation groove 4, the second bevel gear 805 is fixedly arranged at one end of the transmission shaft 804, the second bevel gear 805 is meshed with the first bevel gear 803, and the other end of the transmission shaft 804 rotatably penetrates through the installation groove 4 and extends to the outer side of the sofa mechanism 1;

in this embodiment: the arrangement of the transmission mechanism 8 is necessary and ingenious, the operation of the transverse rack 505 and the operation of the longitudinal rack 503 can be realized simultaneously through the transmission mechanism 8, the transmission shaft 804 is rotated, the transmission shaft 804 rotates to drive the second bevel gear 805 to rotate, the second bevel gear 805 rotates to drive the first bevel gear 803 to rotate, and then the rotation of the rotating shaft 802 is realized, the arrangement realizes the rotation in different directions, the arrangement is necessary, because the rotating shaft 802 is vertically designed in the installation groove 4, if the rotating shaft 802 is directly driven to rotate, the operation is inevitably carried out on the upper side of the base 101, and the rotating shaft 802 rotates to drive the transmission straight gear 801 to rotate so as to respectively drive the transverse rack 505 and the longitudinal rack 503 to move transversely and longitudinally;

when the transmission spur gear 801 rotates clockwise, the longitudinal rack 503 moves towards the L-shaped slot 13, the L-shaped insert 7 can be inserted into the L-shaped slot 13, and meanwhile, the transverse rack 505 moves towards the rectangular slot 14, and the rectangular insert 6 can be inserted into the rectangular slot 14;

when the transmission straight gear 801 rotates counterclockwise, the longitudinal rack 503 moves away from the L-shaped slot 13, at this time, the L-shaped insert block 7 is separated from the L-shaped slot 13, and at the same time, the transverse rack 505 moves away from the rectangular slot 14, at this time, the rectangular insert block 6 is separated from the rectangular slot 14;

in conclusion, the insertion and separation between the rectangular insertion block 6 and the rectangular insertion slot 14 and the insertion and separation between the L-shaped insertion block 7 and the L-shaped insertion slot 13 are synchronous;

elastic gear screens mechanism 9, elastic gear screens mechanism 9 set up on sofa mechanism 1, and elastic gear screens mechanism 9 links to each other with drive mechanism 8 and realizes the location, wherein:

the elastic gear clamping mechanism 9 comprises an expansion link 901, a first spring 902, a clamping slide 903, a clamping rack 904, a clamping gear 905, an operation slot 907 and a clamping slide 908, wherein the operation slot 907 is arranged at the end part of the other back seat 102 facing the wall surface, the end part of the transmission shaft 804 extends into the operation slot 907, the clamping gear 905 is fixedly arranged at the end part of the transmission shaft 804, the outer end of the clamping gear 905 is flat with the back seat 102, two clamping slide blocks 903 and 905, an operation groove 907 and two clamping slide grooves 908 are arranged, the two clamping slide grooves 908 are respectively arranged on the lateral inner walls of the operation groove 907, the two clamping slide blocks 903 are respectively arranged in the two clamping slide grooves 908 in a sliding manner, a clamping rack 904 is fixedly arranged between the two clamping slide blocks 903, the telescopic rod 901 and the first spring 902 are both fixedly arranged between the bottom of the clamping slide blocks 903 and the bottom inner wall of the clamping slide grooves 908, and the first spring 902 is movably sleeved on the circumferential surface of the telescopic rod 901;

when the L-shaped insert block 7 is completely inserted and matched with or completely separated from the L-shaped slot 13, the clamping rack 904 is meshed with the clamping gear 905;

when the rectangular plug block 6 is completely inserted and matched with or completely separated from the rectangular slot 14, the clamping rack 904 is meshed with the clamping gear 905;

in this embodiment: the arrangement of the elastic gear clamping mechanism 9 is necessary, when two groups of sofa mechanisms 1 are spliced, although the two groups of sofa mechanisms 1 are not easy to separate, if the front ends of two bases 101 are held by hands and pushed, the vertical rack 503 can react with the transmission straight gear 801 at the moment, so that the transmission straight gear 801 rotates, and then the two groups of sofa mechanisms 1 are separated, through the arrangement of the elastic gear clamping mechanism 9, the rotating shaft 802 can realize self-locking, the transmission straight gear 801 can not rotate, and then the two groups of sofa mechanisms 1 can not be separated, in the invention, the self-locking of the transmission mechanism 8 is realized through the mutual meshing of the clamping rack 904 and the clamping gear 905, specifically, when the clamping rack 904 is pulled upwards, the clamping gear 905 can rotate, the transmission shaft 804 can rotate through driving the clamping gear 905, and then the separation or splicing of the two groups of sofa mechanisms 1 is realized, when screens rack 904 was in the original condition, screens rack 904 and the meshing of screens gear 905, through the good elastic action of first spring 902 this moment for screens rack 904 and the difficult separation of screens gear 905 realize the auto-lock of drive mechanism 8 then, what need explain is:

when the L-shaped insert block 7 is completely inserted and matched with or completely separated from the L-shaped slot 13, the clamping rack 904 is meshed with the clamping gear 905;

when the rectangular plug block 6 is completely inserted and matched with or completely separated from the rectangular slot 14, the clamping rack 904 is meshed with the clamping gear 905;

air flue mechanism 3, air flue mechanism 3 are provided with two sets ofly, and two sets of air flue mechanisms 3 set up respectively in two sets of sofa mechanism 1, wherein:

each group of air channel mechanisms 3 comprises a U-shaped air channel 301, a rectangular air channel 302 and air holes 303, the U-shaped air channel 301 is arranged at the bottom of one side end of the side seat 103, the U-shaped air channel 301 extends into the base 101, the rectangular air channel 302 is arranged in the side seat 103, the rectangular air channel 302 is communicated with the U-shaped air channel 301, the air holes 303 are arranged in a plurality, the air holes 303 are uniformly arranged at the top of the other side end of the side seat 103, and the air holes 303 are communicated with the rectangular air channel 302;

in this embodiment: the air flow enters from the bottom side of the U-shaped air passage 301, then enters the rectangular air passage 302 along the U-shaped air passage 301, and finally is discharged through the air hole 303, the U-shaped air passage 301 and the rectangular air passage 302 are necessary, the air flow moves correspondingly by utilizing the special shape formed by the U-shaped air passage 301 and the rectangular air passage 302, and the U-shaped air passage 301 and the rectangular air passage 302 not only serve as the space for the air flow to move, but also can be used for accommodating the air flow heating mechanism 10 and the detachable filtering mechanism 11;

airflow heating mechanism 10, airflow heating mechanism 10 sets up in U type air flue 301, wherein:

the airflow heating mechanism 10 comprises a heating rod 1001 and an exhaust fan 1002, the heating rod 1001 is fixedly arranged on the inner wall of the bottom of the U-shaped air passage 301, the exhaust fans 1002 are provided in plurality, and the heating rods 1001 are uniformly and fixedly arranged between the inner walls of the U-shaped air passage 301;

in this embodiment: air exhauster 1002 is with the external air current suction, finally discharges through a plurality of gas pocket 303, and heating rod 1001 then can heat, and the air current forms hot air current after heating to realize the heating in winter, when summer, then brake air exhauster 1002 alone, then can realize the cool wind supply, what need explain is: a corresponding brake switch is arranged on the sofa mechanism 1 to drive the heating rod 1001 and the exhaust fan 1002 to brake or stop, and the heating rod 1001 and the exhaust fan 1002 are electrically connected with an external power supply;

can dismantle filtering mechanism 11, can dismantle filtering mechanism 11 and can dismantle and set up on side seat 103, can dismantle filtering mechanism 11 includes first filtering mechanism, second filtering mechanism, coupling mechanism and elasticity grafting mechanism, link to each other through coupling mechanism between first filtering mechanism and the second filtering mechanism, first filtering mechanism slides with second filtering mechanism and can dismantle and set up in U type air flue 301, link to each other through elasticity grafting mechanism between first filtering mechanism and the side seat 103, first spout 1101 has all been seted up to the top inner wall of two U type air flues 301, it is concrete:

the first filtering mechanism comprises a first net frame 1107 and two first sliding blocks 1104, the two first sliding blocks 1104 are arranged, the two first sliding blocks 1104 are fixedly arranged at the top of the first net frame 1107, the first sliding blocks 1104 are in sliding fit with the first sliding grooves 1101, the first net frame 1107 is in sliding fit with the U-shaped air passage 301, and a dustproof net cover (not shown) is arranged in the first net frame 1107;

the second filtering mechanism comprises a second net frame 1108 and two second sliding blocks 1105, the two second sliding blocks 1105 are arranged, the two second sliding blocks 1105 are both fixedly arranged on the top of the second net frame 1108, the second sliding blocks 1105 are in sliding fit with the first sliding groove 1101, the second net frame 1108 is in sliding fit with the U-shaped air passage 301, and an activated carbon filtering net cover (not shown in the figure) is arranged in the second net frame 1108;

the connecting mechanism comprises two connecting rods 1106, and each connecting rod 1106 is fixedly arranged between the second sliding block 1105 and the first sliding block 1104;

the elastic insertion mechanism comprises an accommodating groove 1102, first inserting holes 1103, fixed blocks 1109, inserting rods 1110, second springs 1111, a poking block 1112, second inserting holes 1113 and first inserting grooves 1114, the accommodating groove 1102 is arranged at the side end of the side seat 103, the accommodating groove 1102 is positioned at the upper side of the U-shaped air passage 301, the number of the first inserting holes 1103 is two, the two first inserting holes 1103 are respectively arranged at the lateral inner walls of the accommodating groove 1102, the number of the fixed blocks 1109 is two, the two fixed blocks 1109 are both fixedly arranged between the upper inner wall and the lower inner wall of the accommodating groove 1102, the number of the second inserting holes 1113 and the first inserting grooves 1114 are both arranged at the side end ends of the two fixed blocks 1109, the two first inserting grooves 1114 are respectively arranged at the end parts, close to each other, of the two first sliding blocks 1104, the inserting rods 1110 and the poking blocks 1112 are both arranged, each inserting rod 1110 is inserted into the first inserting holes 1103, the second inserting holes 1113 and the first inserting grooves 1114, one end of the inserted bar 1110 is positioned between the two fixed blocks 1109, the two shifting blocks 1112 are respectively and fixedly arranged at the mutually close end parts of the two inserted bars 1110, and the second spring 1111 is fixedly arranged between the two shifting blocks 1112;

in this embodiment: the detachable filter mechanism 11 is a preferable scheme of the present invention, when hot air flow or cold air is needed, because the sucked air flow contains impurities or dust, the air flow needs to be filtered, the present invention enables the detachable filter mechanism 11 to be conveniently and rapidly installed and detached through a unique detachable design, when the detachable filter mechanism 11 needs to be detached, two shifting blocks 1112 are extruded, the two shifting blocks 1112 are made to approach each other, at this time, the second spring 1111 is compressed, finally the end of the inserted bar 1110 is separated from the first jack 1103, then the first sliding block 1104 and the second sliding block 1105 are slid to be outwards pulled out, when the installation is needed, the operation can be realized only by inserting the inserted bar 1110 and the first jack 1103 into each other;

a sofa use method convenient for splicing comprises the following steps:

s1, splicing: the clamping rack 904 is pulled upwards to separate the clamping rack 904 from the clamping gear 905, at the moment, the clamping gear 905 can rotate, the rotation of the transmission shaft 804 is realized through the clamping gear 905, the rotation of the transmission shaft 804 drives the second bevel gear 805 to rotate, the rotation of the second bevel gear 805 drives the first bevel gear 803 to rotate, and then the rotation of the rotating shaft 802 is realized, the rotation of the rotating shaft 802 drives the transmission straight gear 801 to rotate, so that the transverse rack 505 and the longitudinal rack 503 are respectively driven to transversely move and longitudinally move, at the moment, the longitudinal rack 503 moves towards the L-shaped slot 13, at the moment, the L-shaped insert block 7 can be inserted into the L-shaped slot 13, at the same time, the transverse rack 505 moves towards the rectangular slot 14, at the moment, the rectangular insert block 6 can be inserted into the rectangular slot 14, and the splicing of the two sets of sofas mechanisms 1 is realized;

s2, blocking: when the L-shaped insert block 7 and the L-shaped slot 13 and the rectangular insert block 6 and the rectangular slot 14 are completely inserted and matched, the clamping rack 904 is pushed downwards, so that the clamping rack 904 and the clamping gear 905 are meshed with each other, the clamping rack 904 and the clamping gear 905 are not easily separated through the good elastic action of the first spring 902, and then the self-locking of the transmission mechanism 8 is realized;

s3, mounting the detachable filter mechanism 11: the two shifting blocks 1112 are squeezed to enable the two shifting blocks 1112 to approach each other, at the moment, the second spring 1111 is compressed, finally, the inserting rod 1110 cannot hinder the first sliding block 1104, the second sliding block 1105 and the first sliding groove 1101 from sliding, then the first sliding block 1104 and the second sliding block 1105 are pushed inwards, the second sliding block 1105 is abutted against the first sliding groove 1101, the two shifting blocks 1112 are not squeezed any more, and the detachable filter mechanism 11 can be installed after the inserting rod 1110 is inserted into the first inserting hole 1103;

s4, heating or cooling air supply: the heating rod 1001 and the exhaust fan 1002 are braked, external air flow is sucked in by the exhaust fan 1002 and finally exhausted through the air holes 303, the heating rod 1001 can be used for heating, and the air flow is heated to form hot air flow so as to realize heating in winter;

in summer, the exhaust fan 1002 is braked independently, so that cool air supply can be realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.