A sofa leg rest adjustment mechanism

Abstract

This utility model provides a sofa leg support adjustment mechanism, installed on the sofa body, including a support plate, a frame fixed to the sofa, and a linkage assembly for adjusting the support plate on the frame. The linkage assembly is symmetrically installed on both sides of the frame to improve the stability of the support plate adjustment. The frame is provided with a driving component to drive the linkage assemblies on both sides to rotate synchronously. The drive motor drives the first support plates on both sides to rotate through the drive shaft, thereby causing the support plate to rotate outward. The drive motor drives the adjustment sleeve to rotate synchronously through the adjustment gear. The adjustment sleeve drives the second support plate to move through the sleeve plate. The second support plate pulls the first and second linkage plates to rotate, thereby raising the support plate, so that the support plate fits the user's legs better, avoiding the user's legs from being suspended due to the height difference of the sofa, and improving the user's comfort. The device also has a limiting component, using a ratchet structure to prevent loosening when the user presses on the support plate, improving the stability of the support plate support.

Description

Technical Field

[0001] This utility model relates to the field of sofa leg support technology, specifically a sofa leg support adjustment mechanism. Background Technology

[0002] Many sofas now come with leg rests to improve comfort. The leg rests are used to support the legs and can be stored inside the sofa when not in use. However, current sofa leg rests generally use a single fulcrum for swinging. Since the upper part of the sofa is usually covered with a thick sofa cushion, the leg rest cannot be aligned with the upper part of the sofa to swing, leaving the upper part of the user's legs hanging in the air, which affects comfort. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a sofa leg support adjustment mechanism to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved by the following technical solution: a sofa leg support adjustment mechanism, installed on the sofa body, including a support plate, a frame fixed on the sofa, and a linkage assembly for adjusting the support plate on the frame. The linkage assembly is symmetrically installed on both sides of the frame to improve the stability of the support plate adjustment. The frame is provided with a driving component for driving the linkage assemblies on both sides to rotate synchronously.

[0005] The linkage assembly includes a first support plate that drives the pallet to rotate and a linkage that controls the lifting and lowering of the pallet. The first support plate is rotatably mounted on the frame. The outer end of the frame is provided with an adjusting member that controls the movement of the linkage, so that the pallet is lifted upward during rotation and can fit against the person's legs.

[0006] As a further embodiment of this utility model:

[0007] The frame is provided with supports on both sides. The first support plate is rotatably installed in the corresponding slot of the support. The driving component includes a drive shaft and a drive motor that is pulsatorically connected to the drive shaft. The drive shaft is rotatably installed in the bearings corresponding to the supports on both sides, and the two sides of the drive shaft are fixedly connected to the first support plate to drive the first support plate to rotate. The drive motor is provided with a drive gear, and the drive shaft is provided with a synchronous gear that is pulsatorically connected to the drive gear to control the rotation of the drive motor.

[0008] As a further embodiment of this utility model:

[0009] The linkage includes a first connecting plate and a second connecting plate arranged parallel to one side of the pallet, and a second support plate that controls the parallel rotation of the first connecting plate and the second connecting plate. One side of the first connecting plate and the second connecting plate are rotatably connected to the pallet, the side of the first connecting plate away from the pallet is rotatably connected to the first support plate, the middle part of the second connecting plate is rotatably connected to the first connecting plate, and the side of the second connecting plate away from the pallet is rotatably connected to the second support plate, so that the second support plate drives the first connecting plate and the second connecting plate to rotate in parallel, thereby adjusting the height of the pallet.

[0010] As a further embodiment of this utility model:

[0011] The adjusting component includes an adjusting gear mounted on the outer end of the drive shaft and an adjusting sleeve rotatably mounted on the outer end of the support. The adjusting sleeve is slidably fitted onto the support cylinder at the outer end of the support. The adjusting sleeve is provided with an internal gear, and an intermediate gear is provided between the adjusting gear and the internal gear. The adjusting gear is connected to the internal gear through the intermediate gear, thereby synchronously driving the adjusting sleeve to rotate. The outer end of the adjusting sleeve is provided with a sleeve plate, which is rotatably connected to the end of the second support plate to control the movement of the second support plate.

[0012] As a further embodiment of this utility model:

[0013] The frame is also provided with a limiting component on one side to restrict the drive shaft and prevent the pallet from loosening. The limiting component is installed next to the support on one side of the frame. The limiting component includes a ratchet fixedly installed on the drive shaft and a pawl that cooperates with the ratchet. The pawl is rotatably installed on the support by a pin. One side of the pawl is attached to the ratchet by a pawl hook, and the other side is connected to a spring. The side of the spring away from the pawl is installed at a corresponding position on the support. The support is also provided with a pulling member to disengage the pawl from the ratchet so that the pallet can be retracted.

[0014] As a further embodiment of this utility model:

[0015] The pulling component includes a pulling cylinder fixedly mounted on the support and a pulling plate disposed at the outer end of the output rod of the pulling cylinder. The outer end of the pawl is provided with a pull rod, and the pulling plate is provided with an arc-shaped groove corresponding to the pull rod. The pull rod is inserted into the arc-shaped groove so that the pull rod can rotate along the pin shaft. When the pulling cylinder is pulled down, the pulling plate will drive the pull rod to move down so that the pawl's pawl hook disengages from the ratchet. At this time, the drive shaft can be rotated for adjustment.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: The drive motor drives the first support plates on both sides to rotate via the drive shaft, thereby causing the support plate to rotate outward. The drive motor synchronously drives the adjusting sleeve to rotate via the adjusting gear. The adjusting sleeve drives the second support plate to move via the sleeve plate. The second support plate pulls the first connecting plate and the second connecting plate to rotate, thereby raising the support plate. This allows the support plate to better fit the user's legs, preventing the user's legs from dangling due to the height difference of the sofa, thus improving user comfort. The device also has a limiting component, using a ratchet structure to prevent loosening when the user presses on the support plate, improving the stability of the support plate support. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a partial cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the limiting component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of this utility model;

[0021] The diagram shows the following components: 1. Sofa body; 2. Support plate; 3. Frame; 4. Ratchet; 21. First support plate; 22. Second support plate; 23. First connecting plate; 24. Second connecting plate; 31. Support; 32. Drive motor; 33. Drive shaft; 34. Drive gear; 35. Synchronizing gear; 36. Adjusting gear; 37. Adjusting sleeve; 38. Intermediate gear; 39. Sleeve plate; 41. Pawl; 42. Spring; 43. Pulling cylinder; 44. Pulling plate; 45. Pull rod; 46. Arc groove. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0023] like Figures 1-4 As shown, this embodiment provides a sofa leg support adjustment mechanism, which is installed on the sofa body 1. It includes a support plate 2, a frame 3 fixed on the sofa, and a linkage assembly for adjusting the support plate 2 on the frame 3. The linkage assembly is symmetrically installed on both sides of the frame 3 to improve the stability of the support plate 2 adjustment. The frame 3 is provided with a drive component to drive the linkage assembly on both sides to rotate synchronously.

[0024] The linkage assembly includes a first support plate 21 that drives the pallet 2 to rotate and a linkage that controls the lifting and lowering of the pallet 2. The first support plate 21 is rotatably mounted on the frame 3. The outer end of the frame 3 is provided with an adjusting member that controls the movement of the linkage, so that the pallet 2 is lifted upward during rotation and can fit against the person's legs.

[0025] In this embodiment, the frame 3 is provided with supports 31 on both sides. The first support plate 21 is rotatably installed in the corresponding slot of the support 31. The driving component includes a drive shaft 33 and a drive motor 32 that is pulsatorically connected to the drive shaft 33. The drive shaft 33 is rotatably installed in the bearings corresponding to the supports 31 on both sides, and the two sides of the drive shaft 33 are fixedly connected to the first support plate 21 to drive the first support plate 21 to rotate. The drive motor 32 is provided with a drive gear 34, and the drive shaft 33 is provided with a synchronous gear 35 that is pulsatorically connected to the drive gear 34 to control the rotation of the drive motor 32.

[0026] In this embodiment, the linkage includes a first connecting plate 23 and a second connecting plate 24 arranged parallel to one side of the pallet 2, and a second support plate 22 that controls the parallel rotation of the first connecting plate 23 and the second connecting plate 24. One side of the first connecting plate 23 and the second connecting plate 24 are rotatably connected to the pallet 2. The side of the first connecting plate 23 away from the pallet 2 is rotatably connected to the first support plate 21. The middle part of the second connecting plate 24 is rotatably connected to the first connecting plate 23. The side of the second connecting plate 24 away from the pallet 2 is rotatably connected to the second support plate 22, so that the first connecting plate 23 and the second connecting plate 24 can be driven to rotate in parallel through the second support plate 22, thereby adjusting the height of the pallet 2.

[0027] In this embodiment, the adjusting component includes an adjusting gear 36 mounted on the outer end of the drive shaft 33 and an adjusting sleeve 37 rotatably mounted on the outer end of the support 31. The adjusting sleeve 37 is slidably sleeved on the support cylinder at the outer end of the support 31. The adjusting sleeve 37 is provided with an internal gear. An intermediate gear 38 is provided between the adjusting gear 36 and the internal gear. The adjusting gear 36 is connected to the internal gear through the intermediate gear 38, thereby synchronously driving the adjusting sleeve 37 to rotate. The outer end of the adjusting sleeve 37 is provided with a sleeve plate 39, which is rotatably connected to the end of the second support plate 22 to control the movement of the second support plate 22.

[0028] In this embodiment, a limiting component is also provided on one side of the frame 3 to restrict the drive shaft 33 and prevent the pallet 2 from loosening. The limiting component is installed next to the support 31 on one side of the frame 3. The limiting component includes a ratchet 4 fixedly installed on the drive shaft 33 and a pawl 41 that cooperates with the ratchet 4. The pawl 41 is rotatably installed on the support 31 by a pin. One side of the pawl 41 is attached to the ratchet 4 by a pawl hook, and the other side is connected to a spring 42. The side of the spring 42 away from the pawl 41 is installed at a corresponding position on the support 31. The support 31 is also provided with a pulling member to disengage the pawl 41 from the ratchet 4 so that the pallet 2 can be retracted.

[0029] The pulling component includes a pulling cylinder 43 fixedly mounted on a support and a pulling plate 44 disposed at the outer end of the output rod of the pulling cylinder 43. The outer end of the pawl 41 is provided with a pull rod 45. The pulling plate 44 is provided with an arc-shaped groove 46 corresponding to the pull rod 45. The pull rod 45 is inserted into the arc-shaped groove 46 so that the pull rod can rotate along the pin shaft. When the pulling cylinder 43 pulls down, the pulling plate 44 will drive the pull rod to move down so that the pawl hook of the pawl 41 disengages from the ratchet 4. At this time, the drive shaft 33 can be rotated for adjustment.

[0030] Specifically, the drive motor 32 drives the first support plates 21 on both sides to rotate via the drive shaft 33, thereby causing the support plate 2 to rotate outward. The drive motor 32 synchronously drives the adjusting sleeve 37 to rotate via the adjusting gear 36. The adjusting sleeve 37 drives the second support plate 22 to move via the sleeve plate 39. The second support plate 22 pulls the first connecting plate 23 and the second connecting plate 24 to rotate, thereby raising the support plate 2. This allows the support plate 2 to better fit the user's legs, preventing the user's legs from dangling due to the height difference of the sofa and improving user comfort. The device also has a limiting component, using a ratchet 4 structure to prevent the support plate 2 from loosening when the user presses it, improving the stability of the support plate 2.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. It should be noted that, in this document, the use of relational terms such as "first" and "second" is merely used to distinguish one entity or operation from another, and does not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A sofa leg support adjustment mechanism, installed on the sofa body (1), characterized in that: It includes a tray (2), a frame (3) fixed on the sofa, and a linkage assembly for adjusting the tray (2) on the frame (3). The linkage assembly is symmetrically installed on both sides of the frame (3) to improve the stability of the tray (2) adjustment. The frame (3) is provided with a drive component to drive the linkage assembly on both sides to rotate synchronously. The linkage assembly includes a first support plate (21) that drives the pallet (2) to rotate and a linkage that controls the lifting and lowering of the pallet (2). The first support plate (21) is rotatably mounted on the frame (3). The outer end of the frame (3) is provided with an adjusting member that controls the action of the linkage, so that the pallet (2) is lifted upward during rotation.

2. The sofa leg support adjustment mechanism according to claim 1, characterized in that: The frame (3) is provided with supports (31) on both sides. The first support plate (21) is rotatably installed in the corresponding slot of the support (31). The driving component includes a drive shaft (33) and a drive motor (32) that is connected to the drive shaft (33). The drive shaft (33) is rotatably installed in the bearings corresponding to the supports (31) on both sides. The two sides of the drive shaft (33) are fixedly connected to the first support plate (21) to drive the first support plate (21) to rotate. The drive motor (32) is provided with a drive gear (34). The drive shaft (33) is provided with a synchronous gear (35) that is connected to the drive gear (34).

3. The sofa leg support adjustment mechanism according to claim 2, characterized in that: The linkage includes a first connecting plate (23) and a second connecting plate (24) arranged parallel to one side of the pallet (2), and a second support plate (22) for controlling the parallel rotation of the first connecting plate (23) and the second connecting plate (24). One side of the first connecting plate (23) and the second connecting plate (24) are rotatably connected to the pallet (2). The side of the first connecting plate (23) away from the pallet (2) is rotatably connected to the first support plate (21). The middle part of the second connecting plate (24) is rotatably connected to the first connecting plate (23). The side of the second connecting plate (24) away from the pallet (2) is rotatably connected to the second support plate (22), so that the first connecting plate (23) and the second connecting plate (24) can be driven to rotate in parallel by the second support plate (22).

4. The sofa leg support adjustment mechanism according to claim 3, characterized in that: The adjusting component includes an adjusting gear (36) installed on the outer end of the drive shaft (33) and an adjusting sleeve (37) rotatably installed on the outer end of the support (31). The adjusting sleeve (37) is slidably sleeved on the support cylinder at the outer end of the support (31). The adjusting sleeve (37) is provided with an internal gear. An intermediate gear (38) is provided between the adjusting gear (36) and the internal gear. The adjusting gear (36) is connected to the internal gear through the intermediate gear (38). The outer end of the adjusting sleeve (37) is provided with a sleeve plate (39). The sleeve plate (39) is rotatably connected to the end of the second support plate (22).

5. The sofa leg support adjustment mechanism according to claim 4, characterized in that: The bracket (3) is also provided with a limiting component for restricting the drive shaft (33) on one side. The limiting component is installed next to the support (31) on one side of the bracket (3). The limiting component includes a ratchet (4) fixedly installed on the drive shaft (33) and a pawl (41) that cooperates with the ratchet (4). The pawl (41) is rotatably installed on the support (31) by a pin. One side of the pawl (41) is attached to the ratchet (4) by a pawl hook, and the other side is connected to a spring (42). The side of the spring (42) away from the pawl (41) is installed at the corresponding position on the support (31). The support (31) is also provided with a pulling member to disengage the pawl (41) from the ratchet (4).

6. The sofa leg support adjustment mechanism according to claim 5, characterized in that: The pulling component includes a pulling cylinder (43) fixedly installed on the support and a pulling plate (44) disposed at the outer end of the output rod of the pulling cylinder (43). The outer end of the pawl (41) is provided with a pull rod (45). The pulling plate (44) is provided with an arc groove (46) corresponding to the pull rod (45). The pull rod (45) is inserted into the arc groove (46).

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