Sofa with lifting device

Abstract

The utility model belongs to the field of furniture, and particularly relates to a sofa with a lifting device, which comprises a sofa main body, and armrests are fixedly connected to two sides of the sofa main body; a lifting mechanism is arranged at the bottom end of the handrail; the lifting mechanism comprises a base, an extension rod, an extension sleeve, a transmission assembly, a rack and an anti-falling assembly, the extension rod is fixedly connected to the center position of the base and inserted into the extension sleeve, the extension sleeve is fixedly connected to the center position of the bottom end of the handrail, the transmission assembly is arranged between the extension rod and the extension sleeve, and the rack is arranged on the transmission assembly. Anti-falling assemblies are arranged between the front end and the rear end of the bottom end of the handrail and the base, and racks are fixedly connected to the two sides of the inner wall of the extension sleeve. And through the structural design of the lifting mechanism, the function of adjusting the overall height of the sofa is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture field, concretely is a sofa with lifting device. BACKGROUND

[0002] The sofa is a multi-seat chair with soft cushion, a backrest chair with spring or thick foam plastic, and has armrests on both sides, is a kind of soft furniture, and is almost indispensable furniture in every family.

[0003] The existing sofa can refer to the Chinese utility model patent with the publication number CN201426548Y, which discloses a new sofa in detail, which is composed of a main frame, a pad, a seat cushion and a sofa leg, the pad is laid on the top of the main frame, and the seat cushion is laid on the pad.The seat cushion is composed of integral sponge and wrapping layer. The integral sponge is selected from new sponge that is not easy to deform

[0004] Although the sofa can effectively play the effect of chair, but in the actual use according to the average height of each family member, the sofa with fixed height is not suitable for each family;Therefore, aiming at the above problem, a sofa with lifting device is provided. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiency of the prior art, the existing sofa can effectively play the effect of chair, but in the actual use according to the average height of each family member, the sofa with fixed height is not suitable for each family problem, the utility model provides a sofa with lifting device.

[0006] The utility model solves the technical scheme that it adopts: a sofa with lifting device, including sofa main part, both sides of sofa main part are fixedly connected with armrest, the bottom of armrest is provided with lifting mechanism,

[0007] The lifting mechanism includes base, extension rod, extension sleeve, transmission assembly, rack and anti-falling assembly, the center position of base is fixedly connected with extension rod, the extension rod is inserted in the inside of extension sleeve, the extension sleeve is fixedly connected at the center position of the bottom of armrest, transmission assembly is arranged between extension rod and extension sleeve, anti-falling assembly is arranged between the front and rear ends of the bottom of armrest and base, rack is fixedly connected on both sides of the inner wall of extension sleeve.

[0008] Preferably, the transmission assembly includes a rocker, a driving gear, a driven gear, a transmission cavity and a transmission shaft, the driving gear is fixedly connected with the rocker, the driving gear is engaged with the driven gear, the driving gear and the driven gear are rotationally connected inside the transmission cavity, the transmission cavity is arranged inside the top end of the extension rod, the driving gear and the driven gear are engaged with two groups of racks respectively, and the transmission shaft is fixedly connected with the two groups of driving gears.

[0009] Preferably, the anti-falling assembly includes a driven rod, a receiving groove, a limiting module and a fixing module, the driven rod is fixedly connected to the front and rear ends of the bottom end of the handrail, the driven rod is inserted into the inside of the receiving groove, the receiving groove is arranged at the front and rear ends of the top end of the base, the limiting module is arranged on one side of the driven rod, and the fixing module is arranged between the other side of the driven rod and the base.

[0010] Preferably, the limiting module includes a sliding block and a sliding groove, the sliding block is fixedly connected to the position close to the top end of the inner wall of the receiving groove, and the sliding block is slidingly connected to the inside of the sliding groove, and the sliding groove is arranged on the side, away from the fixing module, of the driven rod.

[0011] Preferably, the fixing module includes a clamping groove, a clamping block, a movable cavity, a first spring and a release module, the clamping groove is arranged in multiple groups, and the clamping groove is arranged on the side, away from the limiting module, of the driven rod, the clamping groove is matched with the clamping block, the clamping block is sleeved in the movable cavity, the movable cavity is arranged on the side, away from the sliding block, of the inner wall of the receiving groove, the first spring is arranged in the movable cavity, one end, close to the clamping block, of the first spring is fixedly connected with the clamping block, and the other end, away from the clamping block, of the first spring is fixedly connected to the inner wall of the movable cavity, and the release module is arranged at the top end of the clamping block.

[0012] Preferably, the release module includes a sliding block, a receiving cavity, a pull plate, a movable block, a movable groove, a second spring and a linkage block, the top end of the clamping block is fixedly connected with the sliding block, the sliding block is slidingly connected with the bottom end of the linkage block, the linkage block is sleeved in the receiving cavity, the receiving cavity is arranged at the top end of the movable cavity, the side, away from the driven rod, of the linkage block is fixedly connected with the pull plate, the top end of the inner wall of the receiving cavity is fixedly connected with the movable block, the movable block is slidingly connected to the inside of the movable groove, the movable groove is arranged at the top end of the linkage block, and the inside of the movable groove is provided with the second spring, one end, close to the movable block, of the second spring is fixedly connected with the movable block, and the other end, away from the movable block, of the second spring is fixedly connected to the inner wall of the movable groove.

[0013] The utility model discloses the beneficial effect lies in:

[0014] 1. The utility model discloses a structure design of lifting mechanism realizes the function of adjusting the height of sofa whole, has solved the sofa of existing although already can effectively play the effect of chair, but in the process of actual use according to the average height of each family member, the sofa of fixed height is not suitable for each family's problem, according to each family's requirement to different sofa height can be adjusted to match through the height of sofa.

[0015] 2. The utility model discloses a structure design of anti-falling back subassembly realizes the function of avoiding the height of sofa in the process of long -time use under the action of gravity and the weight on it automatically falls back height reduction, can effectively make sofa keep in the height of designation. ACCURACY

[0016] In order to more clearly illustrate the utility model embodiment or prior art technical scheme, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is the whole three-dimensional structure schematic diagram of the sofa with lifting device of the utility model,

[0018] Figure 2 It is the first three-dimensional sectional structure schematic diagram of the sofa with lifting device of the utility model,

[0019] Figure 3 It is the Figure 2 Amplification structure schematic diagram in A of the utility model,

[0020] Figure 4 It is the Figure 2 Amplification structure schematic diagram in B of the utility model,

[0021] Figure 5 It is the second three-dimensional sectional structure schematic diagram of the sofa with lifting device of the utility model,

[0022] Figure 6 It is the Figure 5 Amplification structure schematic diagram in D of the utility model,

[0023] Figure 7 It is the three-dimensional structure schematic diagram of extension sleeve of the utility model,

[0024] Figure 8 It is the three-dimensional structure schematic diagram of transmission assembly of the utility model.

[0025] In the figure: 1, sofa main body; 2, armrest; 31, base; 32, extension rod; 33, extension sleeve; 34, rocker; 36, driving gear; 37, driven gear; 38, transmission cavity; 39, rack; 40, transmission shaft; 41, driven rod; 42, storage groove; 43, sliding block; 44, sliding groove; 45, clamping groove; 46, clamping block; 47, movable cavity; 48, first spring; 49, sliding block; 50, storage cavity; 51, pull plate; 52, movable block; 53, movable slot; 54, second spring; 55, linkage block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1-8 As shown in the figure, a sofa with a lifting device comprises a sofa main body 1, both sides of the sofa main body 1 are fixedly connected with armrests 2; the bottom end of the armrest 2 is provided with a lifting mechanism; the lifting mechanism comprises a base 31, an extension rod 32, an extension sleeve 33, a transmission assembly, a rack 39 and an anti-falling assembly, the center position of the base 31 is fixedly connected with the extension rod 32, the extension rod 32 is inserted in the inside of the extension sleeve 33, the extension sleeve 33 is fixedly connected at the center position of the bottom end of the armrest 2, the transmission assembly is arranged between the extension rod 32 and the extension sleeve 33, the anti-falling assembly is arranged between the front and rear ends of the bottom end of the armrest 2 and the base 31, and the rack 39 is fixedly connected on the inner wall of the extension sleeve 33.

[0028] Further, the transmission assembly comprises a rocker 34, a driving gear 36, a driven gear 37, a transmission cavity 38 and a transmission shaft 40, the driving gear 36 is fixedly connected with the rocker 34 on the left side, the driving gear 36 is engaged with the driven gear 37, the driving gear 36 and the driven gear 37 are both rotationally connected inside the transmission cavity 38, the transmission cavity 38 is arranged inside the top end of the extension rod 32, the driving gear 36 and the driven gear 37 are respectively engaged with two groups of racks 39; in working, when the height of the sofa is to be raised, the rocker 34 is only needed to be shaken to drive the driving gear 36 and the driven gear 37 engaged with the driving gear 36 to rotate, when the driving gear 36 on the left side rotates, the other group of driving gear 36 and driven gear 37 are driven to rotate synchronously through the fixedly connected transmission shaft 40, the rotation is converted into movement through the racks 39 engaged with the driving gear 36 and the driven gear 37, so that the extension sleeve 33 moves upwards, and the fixedly connected sofa body 1 moves upwards synchronously, thereby the effect of raising the overall height of the sofa is achieved, the extension sleeve 33 is provided with a notch corresponding to the transmission shaft 40 and the rocker 34, the transmission shaft 40 and the rocker 34 do not affect the upward and downward movement of the extension sleeve 33.

[0029] Further, the anti-falling-back assembly comprises a driven rod 41, a receiving groove 42, a limiting module and a fixing module, the driven rod 41 is fixedly connected to the front and rear ends of the armrest 2, the driven rod 41 is inserted into the receiving groove 42, the receiving groove 42 is arranged at the front and rear ends of the top end of the base 31, the limiting module is arranged on one side of the driven rod 41, and the fixing module is arranged between the other side of the driven rod 41 and the base 31; in working, when the sofa is raised, the driven rod 41 moves upwards synchronously with the raising of the sofa, at this time, the driven rod 41 extrudes the inclined surface arranged on the clamping block 46, so that the clamping block 46 moves into the movable cavity 47 under the action of the extrusion force, and extrudes the first spring 48 at the same time, so that the first spring 48 is elastically deformed, when the sofa is raised to a specified position, the driven rod 41 no longer moves, at this time, the extrusion force of the driven rod 41 on the clamping block 46 disappears, the clamping block 46 returns to the original position under the action of the restoring force of the first spring 48, and is inserted into the clamping groove 45 and clamped with the clamping groove 45, so that the driven rod 41 cannot move downwards, thereby the effect of preventing the height of the sofa from automatically falling back is achieved.

[0030] Further, the limiting module comprises a sliding block 43 and a sliding groove 44, the sliding block 43 is fixedly connected to the inner wall of the receiving groove 42 close to the top end, and the sliding block 43 is slidingly connected inside the sliding groove 44, the sliding groove 44 is arranged on the side of the driven rod 41 away from the fixing module;

[0031] When the driven rod 41 moves, the sliding block 43 fixedly connected to the inner wall of the storage groove 42 synchronously slides in the sliding groove 44, and the combination of the sliding block 43 and the sliding groove 44 limits the moving distance of the driven rod 41 and the limit lifting height of the sofa, avoids the sofa from being excessively lifted to cause the driven rod 41 to be pulled out of the storage groove 42, and prolongs the pulling out of the extension rod 32 from the extension sleeve 33.

[0032] Further, the fixing module comprises a clamping groove 45, a clamping block 46, a movable cavity 47, a first spring 48 and a releasing module. The clamping groove 45 is provided with a plurality of groups, and the clamping groove 45 is provided on the side of the driven rod 41 away from the limiting module. The clamping groove 45 is matched with the clamping block 46. The clamping block 46 is sleeved in the movable cavity 47. The movable cavity 47 is provided on the inner wall of the storage groove 42 away from the sliding block 43. The first spring 48 is arranged in the movable cavity 47. One end of the first spring 48 close to the clamping block 46 is fixedly connected with the clamping block 46, and the other end of the first spring 48 away from the clamping block 46 is fixedly connected with the inner wall of the movable cavity 47. The releasing module comprises a sliding block 49, a storage cavity 50, a pull plate 51, a movable block 52, a movable groove 53, a second spring 54 and a linkage block 55. The top end of the clamping block 46 is fixedly connected with the sliding block 49. The sliding block 49 is slidably connected with the bottom end of the linkage block 55. The linkage block 55 is sleeved in the storage cavity 50. The storage cavity 50 is provided at the top end of the movable cavity 47. The side of the linkage block 55 away from the driven rod 41 is fixedly connected with the pull plate 51. The top end of the inner wall of the storage cavity 50 is fixedly connected with the movable block 52. The movable block 52 is slidably connected in the movable groove 53. The movable groove 53 is provided at the top end of the linkage block 55. The movable groove 53 is provided with the second spring 54. One end of the second spring 54 close to the movable block 52 is fixedly connected with the movable block 52. The other end of the second spring 54 away from the movable block 52 is fixedly connected with the inner wall of the movable groove 53. When the height of the sofa is to be lowered, the pull plate 51 is pulled first to drive the clamping block 46 to move into the movable cavity 47 through the linkage block 55 and the sliding block 49, so that the clamping block 46 is released from the clamping state with the clamping groove 45. At this time, the driven rod 41 is no longer blocked, and the rocker 34 is reversed to rotate to lower the height of the sofa. When the linkage block 55 is pulled to move out of the storage cavity 50, the movable block 52 fixedly connected to the top end of the inner wall of the storage cavity 50 synchronously slides in the movable groove 53, and the linkage block 55 is extruded to be elastically deformed. When the height of the sofa is adjusted to a specified position, the pull plate 51 is released. At this time, the linkage block 55 is restored to the original position under the restoring force of the second spring 54. The clamping block 46 is also restored to the original position under the restoring force of the movable cavity 47, and is inserted into the clamping groove 45 to continue to limit the movement of the driven rod 41.

[0033] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, similar improvement, etc. within the theoretical and principle content of the present application shall be included in the protection scope of the present application.

Claims

1. A sofa with a lifting device, comprising a sofa body (1), wherein both sides of the sofa body (1) are fixedly connected with armrests (2); characterized in that: The bottom end of the armrest (2) is provided with a lifting mechanism; The lifting mechanism comprises a base (31), a transmission assembly and an anti-falling assembly, an extension rod (32) is fixedly connected at the center position of the base (31), an extension sleeve (33) is inserted into the extension rod (32), and the extension sleeve (33) is fixedly connected to the center position of the bottom end of the handrail (2), a transmission assembly is arranged between the extension rod (32) and the extension sleeve (33), an anti-falling assembly is arranged between the front and rear ends of the bottom end of the handrail (2) and the base (31), and racks (39) are fixedly connected to both sides of the inner wall of the extension sleeve (33).

2. The sofa with a lifting device according to claim 1, characterized in that: The transmission assembly includes a driving gear (36) and a transmission shaft (40). The driving gear (36) on the left side is fixedly connected to a rocker (34). The driving gear (36) is meshed with a passive gear (37). A transmission cavity (38) is provided inside the top end of the extension rod (32). The driving gear (36) and the passive gear (37) are both rotatably connected inside the transmission cavity (38). The driving gear (36) and the passive gear (37) are respectively meshed with racks (39). Both sides of the transmission shaft (40) are fixedly connected to the two sets of driving gears (36).

3. The sofa with a lifting device according to claim 2, characterized in that: The anti-fallback assembly comprises a driven rod (41), a limiting module and a fixing module, wherein the driven rod (41) is fixedly connected to the front and rear ends of the bottom end of the handrail (2), the front and rear ends of the top end of the base (31) are provided with a receiving groove (42), the driven rod (41) is inserted into the inside of the receiving groove (42), the limiting module is arranged on one side of the driven rod (41), and the fixing module is arranged between the other side of the driven rod (41) and the base (31).

4. The sofa with a lifting device according to claim 3, characterized in that: The limiting module includes a slider (43), a sliding groove (44) is provided on a side of the driven rod (41) away from the fixed module, and the slider (43) is slidably connected inside the sliding groove (44).

5. The sofa with a lifting device according to claim 4, characterized in that: The fixing module includes a card slot (45), a first spring (48), a release module, and a card block (46). The card slot (45) is provided in multiple groups, and the card slot (45) is provided on the side of the driven rod (41) away from the limiting module. The card slot (45) cooperates with the card block (46). An active cavity (47) is provided on the inner wall of the receiving groove (42) away from the slider (43). The card block (46) is sleeved inside the active cavity (47). The first spring (48) is provided inside the active cavity (47). The two ends of the first spring (48) are respectively fixedly connected to the card block (46) and the inner wall of the active cavity (47). The release module is provided at the top of the card block (46).

6. The sofa with a lifting device according to claim 5, characterized in that: The release module comprises a sliding block (49) and a linkage block (55), wherein the sliding block (49) is fixedly connected to the top end of the clamping block (46), and the sliding block (49) is slidably connected to the bottom end of the linkage block (55). A receiving chamber (50) is provided at the top end of the movable chamber (47), and the linkage block (55) is sleeved in the receiving chamber (50). A pull plate (51) is fixedly connected to the side of the linkage block (55) away from the driven rod (41), and a movable block (52) is fixedly connected to the top end of the inner wall of the receiving chamber (50). A movable groove (53) is provided at the top end of the linkage block (55), and the movable block (52) is slidably connected to the inside of the movable groove (53). A second spring (54) is provided inside the movable groove (53), and two ends of the second spring (54) are respectively fixedly connected to the inner wall of the movable block (52) and the movable groove (53).

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