Multifunctional sofa armrest

Abstract

The utility model discloses a multifunctional sofa armrest which comprises a cuboid-shaped box body, a square hole is formed in the top of the box body, a cuboid-shaped lifting bin is arranged in the box body, an opening is formed in one side of the lifting bin in the width direction, a plurality of horizontal partition plates are arranged in the lifting bin, and the upper end of the lifting bin enters the square hole. A supporting block fixed to the box body is arranged below the lifting bin, and a driving mechanism connected with the lifting bin is arranged in the box body. The driving mechanism comprises two fixed pulleys, two movable pulleys and a gear motor, the fixed pulleys are connected with the inner wall of the top plate of the box body, the movable pulleys are connected with the bottom of the lifting bin, a rope wheel is arranged at the output end of the gear motor, a traction cable is wound around the rope wheel, and the end of the traction cable extends upwards, bypasses one of the fixed pulleys and then extends downwards. One fixed pulley horizontally extends upwards after passing through the two movable pulleys, then extends downwards after bypassing the other fixed pulley, and is fixed with the inner wall of the box body. The utility model has the advantages of higher space utilization rate and more convenience in use.

Description

Technical Field

[0001] This utility model belongs to the field of sofas, and in particular relates to a multifunctional sofa armrest. Background Technology

[0002] Existing multifunctional sofa armrests, such as the one described in application number 201220217459.3, feature an openable top and a hollow center. The interior contains multiple drawers along its height for storage. These drawers can be moved horizontally to be pulled out, allowing items to be stored or retrieved. However, because the drawers need to be moved horizontally, a significant amount of clearance must be left within the armrest to accommodate them, resulting in low space utilization. Furthermore, the drawers are always located within the armrest, making it inconvenient to put in and take out items, especially the bottom drawers. Therefore, existing multifunctional sofa armrests suffer from low space utilization and inconvenience. Utility Model Content

[0003] The purpose of this invention is to provide a multifunctional sofa armrest. This invention has the advantages of high space utilization and ease of use.

[0004] The technical solution of this utility model is as follows: A multifunctional sofa armrest includes a rectangular box with a square hole at the top. A rectangular lifting compartment is provided inside the box, with the width of the lifting compartment opening to one side. Multiple horizontal partitions are provided inside the lifting compartment. The upper end of the lifting compartment enters the square hole. A support block fixed to the box is provided below the lifting compartment. A drive mechanism connected to the lifting compartment is provided inside the box.

[0005] In the aforementioned multifunctional sofa armrest, the drive mechanism includes two fixed pulleys, two movable pulleys, and a reduction motor. The fixed pulleys are connected to the inner wall of the top plate of the housing via an upper bracket, and the movable pulleys are connected to the bottom of the lifting chamber via a lower bracket. The reduction motor is fixed to the housing, and the output end of the reduction motor is equipped with a rope wheel with a traction cable wound on it. The end of the traction cable extends upward, passes over one of the fixed pulleys, extends downward, then extends horizontally through the two movable pulleys, extends upward again, passes over the other fixed pulley, extends downward again, and is then fixed to the inner wall of the housing.

[0006] In the aforementioned multi-functional sofa armrest, two fixed pulleys are located on both sides of the length of the lifting compartment, two movable pulleys are located on both sides of the bottom length of the lifting compartment, and the reduction motor is located on the length of the lifting compartment.

[0007] In the aforementioned multifunctional sofa armrest, the lifting compartment has a long groove on the wide back side, and a ball bearing slide rail is installed in the long groove. One end of the ball bearing slide rail is fixed to the lifting compartment, and the other end of the ball bearing slide rail is fixed to the housing.

[0008] In the aforementioned multifunctional sofa armrest, annular rope grooves are provided on the outer circumferential surfaces of the fixed pulley, the movable pulley, and the rope wheel.

[0009] Compared with existing technologies, this utility model incorporates a lifting compartment in the armrest. Since the lifting compartment does not move horizontally, there is no need to leave horizontal clearance in the armrest, increasing its horizontal length and improving space utilization. Because the lifting compartment can extend upwards beyond the armrest, items can be retrieved or placed in a more spacious area, making the armrest easier to use. Furthermore, the increased height of the lifting compartment allows users to operate it while seated on the sofa, eliminating the need to bend over and reach into the armrest, further enhancing usability. Therefore, this utility model offers the advantages of high space utilization and ease of use.

[0010] Furthermore, by optimizing the drive mechanism's structure and reducing its vertical space occupation, the height of the lifting cabin can be increased to nearly the height of the handrail, thus further improving space utilization. Incorporating ball bearing slides into the lifting cabin reduces its upward resistance, ensuring smooth operation and preventing tipping after elevation, thereby enhancing structural stability. Attached Figure Description

[0011] Figure 1 This is a front view schematic diagram of Example 1.

[0012] Figure 2 yes Figure 1 A diagram at point AA.

[0013] The markings in the attached diagram are as follows: 1-box body, 2-square hole, 3-lifting chamber, 4-partition, 5-support block, 6-fixed pulley, 7-moving pulley, 8-reduction motor, 9-upper bracket, 10-lower bracket, 11-rope wheel, 12-traction rope, 13-long groove, 14-steel ball slide rail, 15-rope groove, 16-reverse switch. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0015] Example 1: A multifunctional sofa armrest, such as Figure 1As shown, the device includes a rectangular box 1 with a square hole 2 at the top. Inside the box 1 is a rectangular lifting compartment 3 with its width opening to one side. Inside the lifting compartment 3 are three horizontal partitions 4, forming four storage spaces. The upper end of the lifting compartment 3 enters the square hole 2, and the top surface of the lifting compartment 3 is aligned with the top surface of the box 1. The square hole 2 guides the lifting of the lifting compartment 3. Below the lifting compartment 3 are four support blocks 5, each fixed to the box 1. The four support blocks 5 are located at the four corners of the bottom of the lifting compartment 3. Inside the box 1 is a drive mechanism that connects to the lifting compartment 3.

[0016] The drive mechanism includes two fixed pulleys 6, two movable pulleys 7, and a reduction motor 8. The fixed pulleys 6 are connected to the inner wall of the top plate of the housing 1 through the upper bracket 9 and can rotate freely. The movable pulleys 7 are connected to the bottom of the lifting chamber 3 through the lower bracket 10 and can rotate freely. The reduction motor 8 is fixed to the housing 1. The output end of the reduction motor 8 is provided with a rope wheel 11. A traction cable 12 is wound on the rope wheel 11. The end of the traction cable 12 extends upward, passes over one of the fixed pulleys 6 and then extends downward, then extends horizontally through the two movable pulleys 7 and then extends upward, then passes over the other fixed pulley 6 and then extends downward, and finally is fixed to the inner wall of the housing 1.

[0017] Two fixed pulleys 6 are located on the longitudinal sides of the lifting chamber 3, two movable pulleys 7 are located on the longitudinal sides of the bottom of the lifting chamber 3, and the reduction motor 8 is located on the longitudinal side of the lifting chamber 3.

[0018] The lifting chamber 3 has two rows of long slots 13 on its wide back side. The lower end of the long slots 13 penetrates the bottom surface of the lifting chamber 3, and the upper end of the long slots 13 is located below the top surface of the lifting chamber 3. A ball bearing slide rail 14 is installed in the long slots 13. One end of the ball bearing slide rail 14 is fixed to the lifting chamber 3, and the other end of the ball bearing slide rail 14 is fixed to the cabinet 1. The ball bearing slide rail 14 is a common drawer accessory on the market. The ball bearing slide rail 14 can reduce the upward resistance of the lifting chamber 3 and prevent the lifting chamber from tipping over after rising, thus improving stability.

[0019] The outer circumferential surface of the fixed pulley 6, the outer circumferential surface of the movable pulley 7, and the outer circumferential surface of the rope wheel 11 are all provided with annular rope grooves 15, and the traction cable 12 passes through the rope grooves 15.

[0020] The geared motor 8 has a self-locking capability. The geared motor 8 is connected to the mains power through the reversing switch 16, which is fixed to the top of the housing 1.

[0021] Working principle: The forward / reverse switch 16 causes the geared motor 8 to rotate forward, which in turn drives the rope pulley 11 to rotate forward. The rope pulley 11 winds the traction cable 12. Since the end of the traction cable 12 is fixed, the lifting chamber 3 moves upward. Once the desired height is reached, the forward / reverse switch 16 turns off the geared motor 8, allowing the user to place items on the corresponding partition 4 or remove items from the corresponding partition 4. The forward / reverse switch 16 turns the geared motor 8 in reverse. When the lifting chamber 3 descends to its top surface aligned with the housing, the forward / reverse switch 16 turns off the geared motor 8 again. At this point, the housing 1 contacts the support block 5. The support block 5 prevents the movable pulley 7 from contacting the housing 1.

[0022] Example 2: Based on Example 1, the control of the geared motor 8 does not use a reversing switch. Instead, the control of the geared motor 8 adopts the following structure:

[0023] It includes a DC power supply, a normally open up button, a normally open down button, a normally closed stop button, a normally closed upper limit switch, a normally closed lower limit switch, and two double-pole double-throw relays (A and B). The up button, down button, and stop button are fixed to the top of the housing 1.

[0024] In the forward rotation control circuit of the geared motor, the current path is: positive power supply, stop button, up button, upper limit switch, relay A coil, normally closed contact of relay B, and negative power supply. When the up button is pressed, relay A engages and self-locks through its internal normally open contact. With relay A conducting, the geared motor rotates forward, and the lifting platform rises. At the upper limit position, it contacts the upper limit switch, disconnecting the forward rotation control circuit and stopping the geared motor. During the lifting platform's ascent, pressing the stop button disconnects the forward rotation control circuit, stops the geared motor, and keeps the lifting platform stationary.

[0025] In the reverse control circuit of the geared motor, the current path is: positive power supply, stop button, lowering button, lower limit switch, relay B coil, normally closed contact of relay A, and negative power supply. When the lowering / raising button is pressed, relay B engages and self-locks through its internal normally open contact. With relay B in the conducting state, the geared motor reverses, and the lifting platform descends. When it reaches the limit position, it contacts the lower limit switch, disconnecting the reverse control circuit and stopping the geared motor. During the descent of the lifting platform, pressing the stop button disconnects the reverse control circuit, stops the geared motor, and the lifting platform remains stationary.

[0026] The control structure of the aforementioned geared motor is a conventional technical means in this field, and those skilled in the art can understand the connection relationship between the various components based on the control loop.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A multi-functional sofa arm characterized by: The utility model provides a kind of lifting cabinet, including cuboid box (1), the top of box (1) is equipped with square hole (2), cuboid lifting bin (3) is equipped in box (1), the wide side of lifting bin (3) is opened, multiple horizontal partitions (4) are equipped in lifting bin (3), the upper end of lifting bin (3) enters into square hole (2), the lower of lifting bin (3) is equipped with with the support block (5) fixed with box (1), box (1) is equipped with the drive mechanism connected with lifting bin (3); The drive mechanism includes two fixed pulleys (6), two movable pulleys (7) and a speed reducer motor (8), the fixed pulley (6) is connected to the inner wall of the top plate of the box (1) through an upper support (9), the movable pulley (7) is connected to the bottom of the lifting bin (3) through a lower support (10), the speed reducer motor (8) is fixed with the box (1), the output end of the speed reducer motor (8) is provided with a rope wheel (11), the rope wheel (11) is wound with a traction cable (12), the end of the traction cable (12) extends upward, extends downward after passing through one of the fixed pulleys (6), extends upward after passing through the two movable pulleys (7), and then extends downward after passing through the other fixed pulley (6), and is fixed with the inner wall of the box (1).

2. The multi-functional sofa armrest of claim 1, wherein: The two fixed pulleys (6) are respectively located on the long sides of the lifting bin (3), the two movable pulleys (7) are respectively located on the long sides of the bottom of the lifting bin (3), and the speed reducer motor (8) is located on the long side of the lifting bin (3).

3. The multi-functional sofa armrest of claim 1, wherein: The wide back side of the lifting bin (3) is provided with a long slot (13), and the long slot (13) is provided with a steel ball slide rail (14), one end of the steel ball slide rail (14) is fixed with the lifting bin (3), and the other end of the steel ball slide rail (14) is fixed with the box (1).

4. The multi-functional sofa armrest of claim 1, wherein: The outer periphery of the fixed pulley (6), the outer periphery of the movable pulley (7), and the outer periphery of the rope wheel (11) are all provided with an annular rope groove (15).

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