CN209932092U

CN209932092U - Switch device capable of controlling backrest of movable sofa to extend

Info

Publication number: CN209932092U
Application number: CN201920327975.3U
Authority: CN
Inventors: 孙勇
Original assignee: Jiangsu Star Sofa Accessories Co Ltd
Current assignee: Jiangsu Star Sofa Accessories Co Ltd
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2020-01-14
Anticipated expiration: 2029-03-15

Abstract

The utility model discloses a switching device that steerable activity sofa backrest extends relates to activity sofa technical field, and it includes sofa base, the equal fixedly connected with fixed plate in rear side of the sofa base left and right sides face, and the equal joint of opposite face of two fixed plates has the bearing, and two bearings all cup joint in the pivot, the last fixed surface of pivot is connected with the fixed block. This switchgear that steerable activity sofa back extends, through setting up torsion spring, gear and fixture block, people pass through pull ring pulling slide bar upward movement, the slide bar drives the fixture block upward movement and breaks away from the gear, make changeing epaxial fixed block and sofa back can rotate, fix the sofa back as required, as long as loosen the pull ring can, avoid too much transmission connection between the traditional extension device, the sofa back can increase the area of sofa base after expanding simultaneously, the space that occupies can be saved to receipts, thereby it is convenient to have brought for people to use the sofa.

Description

Switch device capable of controlling backrest of movable sofa to extend

Technical Field

The utility model relates to a movable sofa technical field specifically is a steerable movable sofa backrest extends's switching device.

Background

At present current activity sofa machinery extends switching device ubiquitous structure complicacy, and the stationarity is poor, and the equipment is loaded down with trivial details, and extension structure is many when designing through rivet and connecting rod, as long as one of them part work that can not be normal, whole extension structure just can't normal work, and this brings very big use hidden danger for the user, is unfavorable for the popularization in market.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a switchgear that steerable activity sofa back extends has solved current activity sofa machinery and has extended switchgear ubiquitous structure complicacy, and the stationarity is poor, and the equipment is loaded down with trivial details, and when extending structure was many through rivet and connecting rod design, as long as work that one part of them can not be normal, whole extending structure is just unable normal work, and this brings very big use hidden danger for the user, is unfavorable for the problem of marketing.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the technical proposal that: the utility model provides a switchgear that steerable activity sofa back extends, includes sofa base, the equal fixedly connected with fixed plate in rear side of the sofa base left and right sides face, and the equal joint of opposite face of two fixed plates has the bearing, and two bearings all cup joint in the pivot, the last fixed surface of pivot is connected with the fixed block, the last fixed surface of fixed block is connected with sofa back.

The surface of the rotating shaft is sleeved with a torsion spring, the left end and the right end of the torsion spring are respectively and fixedly connected to opposite surfaces of the two fixing plates, the right end of the rotating shaft penetrates through the bearing on the right side and is fixedly connected with the left side surface of the gear, a clamping block is clamped in teeth at the top end of the gear, and a sliding rod is fixedly connected to the upper surface of the clamping block.

The sliding sleeve has been cup jointed on the surface of slide bar, the sliding sleeve joint is at the upper surface of casing, the left surface fixed connection of casing is at the right flank of right side fixed plate, the top fixedly connected with connecting plate of slide bar, the spring has been cup jointed on the surface of slide bar, the bottom fixed connection of spring is at the upper surface of casing, the top fixed connection of spring is at the lower surface of connecting plate.

Preferably, the width of the sofa backrest is smaller than the distance between the two fixing plates, and the back surface of the sofa backrest is lapped on the front surface of the torsion spring.

Preferably, the upper surface of the sofa base is provided with two handrails, and the two handrails are respectively positioned at the left side and the right side of the upper surface of the sofa base.

Preferably, the upper surface of the connecting plate is fixedly connected with a pull ring, and the surface of the pull ring is provided with anti-skid grains.

Preferably, the shape of the fixture block is matched with the gap between the teeth on the gear, and the width of the fixture block is larger than that of the gear.

Preferably, the lower surface of the sofa base is fixedly connected with four supporting legs, and the four supporting legs are respectively positioned at four corners of the lower surface of the sofa base.

(III) advantageous effects

The beneficial effects of the utility model reside in that:

1. this switchgear that steerable activity sofa back extends, through setting up torsion spring, gear and fixture block, people pass through pull ring pulling slide bar upward movement, the slide bar drives the fixture block upward movement and breaks away from the gear, make changeing epaxial fixed block and sofa back can rotate, fix the sofa back as required, as long as loosen the pull ring can, avoid too much transmission connection between the traditional extension device, the sofa back can increase the area of sofa base after expanding simultaneously, the space that occupies can be saved to receipts, thereby it is convenient to have brought for people to use the sofa.

2. This switchgear that steerable activity sofa back extends, through setting up slide bar and sliding sleeve, guaranteed that the fixture block can not take place the skew in the removal of vertical direction, make the fixture block can be stable block the gear, through setting up the spring, loosen the pull ring of pulling when people, under the effect of spring tension, the spring passes through the connecting plate and drives slide bar and fixture block downstream, make the fixture block can block the gear, thereby made things convenient for people to operate fixture block chucking gear, through setting up bearing and pivot, under the cooperation of pivot and two bearings, fixed block and sofa back can normal rotation, thereby the smooth and easy rotation of sofa back has been guaranteed.

3. This switchgear that steerable activity sofa backrest extends, through setting up the distance between sofa backrest and two fixed plates, avoid sofa backrest to touch two fixed plates at rotatory in-process, make the unable normal rotation of sofa backrest, through setting up the pull ring, made things convenient for people to pass through connecting plate and slide bar pulling fixture block upward movement, the anti-skidding line on pull ring surface can increase its surperficial frictional force simultaneously, skid when having avoided people to use the pull ring, through setting up the handrail, can prevent that article on the sofa base from dropping to the place, also prevent simultaneously that people from dropping to ground from the sofa base, through setting up the supporting leg, can make sofa base's support become more stable.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a schematic sectional view of the rear view of the present invention;

fig. 3 is a schematic view of the right-side cross-sectional structure of the present invention.

In the figure: the sofa comprises a sofa base 1, a fixing plate 2, a rotating shaft 3, a bearing 4, a fixing block 5, a sofa backrest 6, a torsion spring 7, a gear 8, a clamping block 9, a sliding rod 10, a sliding sleeve 11, a shell 12, a connecting plate 13, a spring 14, a pull ring 15, a handrail 16 and a supporting leg 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: a switch device capable of controlling the extension of a movable sofa backrest comprises a sofa base 1, two handrails 16 are arranged on the upper surface of the sofa base 1, the two handrails 16 are respectively positioned on the left side and the right side of the upper surface of the sofa base 1, articles on the sofa base 1 can be prevented from falling to the place by arranging the handrails 16, and people can be prevented from falling to the ground from the sofa base 1, four supporting legs 17 are fixedly connected to the lower surface of the sofa base 1, the four supporting legs 17 are respectively positioned at four corners of the lower surface of the sofa base 1, the supporting of the sofa base 1 can be more stable by arranging the supporting legs 17, fixed plates 2 are fixedly connected to the rear sides of the left side and the right side of the sofa base 1, bearings 4 are respectively clamped on the opposite surfaces of the two fixed plates 2, the two bearings 4 are respectively sleeved on a rotating shaft 3, and by arranging the bearings 4, under pivot 3 and two bearing 4's cooperation, fixed block 5 and sofa back 6 can be normal rotatory, thereby guaranteed the smooth and easy rotation of sofa back 6, the last fixed surface of pivot 3 is connected with fixed block 5, the last fixed surface of fixed block 5 is connected with sofa back 6, sofa back 6's width is less than the distance between two fixed plates 2, and sofa back 6's back overlap joint is in torsion spring 7's front, through setting up the distance between sofa back 6 and two fixed plates 2, avoid sofa back 6 to touch two fixed plates 2 at rotatory in-process, make the unable normal rotation of sofa back 6.

The surface of the rotating shaft 3 is sleeved with a torsion spring 7, the left end and the right end of the torsion spring 7 are respectively fixedly connected to the opposite surfaces of the two fixing plates 2, the right end of the rotating shaft 3 penetrates through the bearing 4 on the right side and is fixedly connected with the left side surface of the gear 8, a clamping block 9 is clamped in teeth at the top end of the gear 8, the shape of the clamping block 9 is matched with a gap between the teeth on the gear 8, the width of the clamping block 9 is larger than that of the gear 8, through the arrangement of the torsion spring 7, the gear 8 and the clamping block 9, people pull the sliding rod 10 to move upwards through the pull ring 15, the sliding rod 10 drives the clamping block 9 to move upwards to separate from the gear 8, so that the fixing block 5 on the rotating shaft 3 and the sofa backrest 6 can rotate, when the sofa backrest 6 needs to be fixed, only the pull ring 15 needs to be loosened, excessive transmission connection between traditional stretching devices, the occupied space can be saved when the sofa is folded, so that convenience is brought to people to use the sofa, and the sliding rod 10 is fixedly connected to the upper surface of the clamping block 9.

The surface of the sliding rod 10 is sleeved with a sliding sleeve 11, the sliding sleeve 11 is clamped on the upper surface of a shell 12, by arranging the sliding rod 10 and the sliding sleeve 11, the fixture block 9 is ensured to move in the vertical direction without deflection, so that the fixture block 9 can stably clamp the gear 8, the left side surface of the shell 12 is fixedly connected on the right side surface of the right side fixing plate 2, the top end of the sliding rod 10 is fixedly connected with a connecting plate 13, the surface of the sliding rod 10 is sleeved with a spring 14, the bottom end of the spring 14 is fixedly connected on the upper surface of the shell 12, the top end of the spring 14 is fixedly connected on the lower surface of the connecting plate 13, by arranging the spring 14, when people loosen a pulling ring 15, under the pulling force of the spring 14, the spring 14 drives the sliding rod 10 and the fixture block 9 to move downwards through the connecting plate 13, so that the fixture block 9 can clamp the gear 8, the surface of the pull ring 15 is provided with anti-skidding lines, and by arranging the pull ring 15, people can conveniently pull the fixture block 9 to move upwards through the connecting plate 13 and the slide rod 10, meanwhile, the anti-skidding lines on the surface of the pull ring 15 can increase the friction force on the surface of the pull ring, and slipping when people use the pull ring 15 is avoided.

The utility model discloses an operating procedure does:

s1, when the sofa backrest is used, a user pulls the sliding rod 10 to move upwards through the pull ring 15, the sliding rod 10 drives the clamping block 9 to move upwards to separate from the gear 8, so that the fixing block 5 on the rotating shaft 3 and the sofa backrest 6 can rotate, and at the moment, the user only needs to slightly push the sofa backrest 6 to enable the sofa backrest 6 to rotate around the rotating shaft 3;

s2, when the position of the sofa backrest 6 is adjusted, the pull ring 15 is loosened, the spring 14 drives the slide rod 10 and the fixture block 9 to move downwards through the connecting plate 13 under the action of the tension of the spring 14, so that the gear 8 can be clamped by the fixture block 9, and the sofa backrest 6 can be stably fixed at the adjusted position.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A switch device capable of controlling the extension of a movable sofa backrest comprises a sofa base (1), and is characterized in that: the rear sides of the left side surface and the right side surface of the sofa base (1) are fixedly connected with fixing plates (2), the opposite surfaces of the two fixing plates (2) are respectively clamped with a bearing (4), the two bearings (4) are respectively sleeved on a rotating shaft (3), the upper surface of the rotating shaft (3) is fixedly connected with a fixing block (5), and the upper surface of the fixing block (5) is fixedly connected with a sofa backrest (6);

a torsion spring (7) is sleeved on the surface of the rotating shaft (3), the left end and the right end of the torsion spring (7) are respectively and fixedly connected to the opposite surfaces of the two fixing plates (2), the right end of the rotating shaft (3) penetrates through the bearing (4) on the right side and is fixedly connected with the left side surface of the gear (8), a clamping block (9) is clamped in teeth at the top end of the gear (8), and a sliding rod (10) is fixedly connected to the upper surface of the clamping block (9);

sliding sleeve (11) have been cup jointed on the surface of slide bar (10), sliding sleeve (11) joint is at the upper surface of casing (12), the right flank of left surface fixed connection at right side fixed plate (2) of casing (12), the top fixedly connected with connecting plate (13) of slide bar (10), spring (14) have been cup jointed on the surface of slide bar (10), the bottom fixed connection of spring (14) is at the upper surface of casing (12), the top fixed connection of spring (14) is at the lower surface of connecting plate (13).

2. The switch device for controlling the extension of the backrest of a movable sofa according to claim 1, wherein: the width of the sofa backrest (6) is smaller than the distance between the two fixing plates (2), and the back surface of the sofa backrest (6) is lapped on the front surface of the torsion spring (7).

3. The switch device for controlling the extension of the backrest of a movable sofa according to claim 1, wherein: the upper surface of the sofa base (1) is provided with two handrails (16), and the two handrails (16) are respectively positioned at the left side and the right side of the upper surface of the sofa base (1).

4. The switch device for controlling the extension of the backrest of a movable sofa according to claim 1, wherein: the upper surface of the connecting plate (13) is fixedly connected with a pull ring (15), and anti-skid grains are arranged on the surface of the pull ring (15).

5. The switch device for controlling the extension of the backrest of a movable sofa according to claim 1, wherein: the shape of the fixture block (9) is matched with a gap between teeth on the gear (8), and the width of the fixture block (9) is larger than that of the gear (8).

6. The switch device for controlling the extension of the backrest of a movable sofa according to claim 1, wherein: the lower surface of the sofa base (1) is fixedly connected with four supporting legs (17), and the four supporting legs (17) are respectively positioned at four corners of the lower surface of the sofa base (1).