Household chair with waist supporting function

Abstract

The utility model belongs to the technical field of household chairs, and particularly relates to a household chair with a waist supporting function, which comprises a chair back obliquely arranged on the rear side of the top of a chair body, the front side of the chair back is sequentially provided with a waist rest and an adjusting mechanism from outside to inside, the adjusting mechanism comprises a rotatable screw rod and a screw sleeve screwed on the screw rod, and the waist rest is connected with the screw sleeve. A threaded sleeve is arranged on the screw rod, a connecting mechanism is connected between the threaded sleeve and the bottom end of the waist rest, the top end of the waist rest is rotatably arranged on the chair back, and when the threaded sleeve moves on the screw rod, the threaded sleeve is used for driving the waist rest to be pushed outwards or pulled back inwards. The waist rest is driven to be pushed outwards or pulled back inwards through the connecting mechanism according to the worm and gear principle of the threaded rod and the threaded sleeve, so that the waist is supported through the waist rest, and then position adjustment can be conducted according to the position of the waist of a user.

Description

Technical Field

[0001] The utility model belongs to the technical field of home chairs, and in particular relates to a home chair with a waist supporting function. Background Art

[0002] Home Chair Encyclopedia: The chair is composed of a backrest, base, headrest, armrests, gas pressure rod and chair legs.

[0003] The chair back is the rear support of the chair, which can support the upper part of the body. The different heights and angles of the chair back can provide different sitting experiences. However, the existing chair back does not have the function of supporting the waist. The waist is not supported. After sitting down, the waist is in a suspended state for a long time. It can only be used for normal office life and is not convenient for short-term rest. The chair back cannot be adjusted according to the needs of the user, so some users cannot use the backrest during use. Utility Model Content

[0004] The purpose of the utility model is to provide a home chair with a lumbar support function, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a home chair with lumbar support function, comprising: a chair back tiltedly arranged on the rear side of the top of a seat body, a lumbar support and an adjustment mechanism installed on the front side of the chair back in sequence from the outside to the inside, the adjustment mechanism comprising a rotatable screw and a screw sleeve screwed on the screw, a connecting mechanism being connected between the screw sleeve and the bottom end of the lumbar support, the top end of the lumbar support being rotatably installed on the chair back, and when the screw sleeve moves on the screw, it is used to drive the lumbar support to be pushed outward or pulled inward.

[0006] Preferably, a motor for driving the screw to rotate is also installed in the chair back, one side of the motor is electrically connected to a rechargeable battery, and the rechargeable battery is detachably installed on the rear side of the chair back.

[0007] Preferably, a battery compartment for accommodating rechargeable batteries is provided on the rear side of the chair back, a cover plate is provided on the outside of the battery compartment, a fastening bolt screwed into the chair back is provided on the outer side of the top of the cover plate, a limit plate is provided on the outer side of the bottom end of the battery compartment, and a slot for accommodating the limit plate is provided on the outer side of the bottom of the cover plate.

[0008] Preferably, a mounting groove is provided on the front side of the chair back, rotating shafts that can rotate in the mounting groove are installed on both sides of the top of the lumbar support, a mounting compartment connected to the mounting groove is provided on the chair back, the motor is installed in the mounting compartment, and the screw is longitudinally rotatably installed in the mounting groove.

[0009] Preferably, the connecting mechanism comprises a connecting rod, and two ends of the connecting rod are rotatably mounted on the threaded sleeve and the waist support respectively.

[0010] Preferably, the lumbar support is an arc plate-shaped structure, and the arc-shaped structure of the lumbar support faces outwards.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model adds a screw, a screw sleeve, a connecting mechanism and a lumbar support. The lumbar support is pushed outward or pulled inward through the connecting mechanism by the worm gear principle of the screw and the screw sleeve, thereby supporting the waist through the lumbar support, and the position can be adjusted according to the position of the user's waist.

[0013] (2) The utility model adds a motor and a rechargeable battery. The rechargeable battery can power the motor, and the motor can also drive the screw to rotate, so that the position of the lumbar support can be automatically adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model;

[0015] Figure 2 This is a schematic diagram of the coordination of the chair seat, lumbar support, screw rod, screw sleeve, motor and rechargeable battery of the utility model;

[0016] Figure 3 This is a front view of the lumbar support, chair back and screw rod of the utility model;

[0017] In the figure: 1. seat body; 2. lumbar support; 3. connecting rod; 4. seat back; 5. mounting slot; 6. screw; 7. screw sleeve; 8. rotating shaft; 9. rechargeable battery; 10. cover plate; 11. fastening bolt; 12. mounting compartment; 13. slot; 14. limit plate; 15. motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] refer to Figure 1-3As shown, the utility model provides a home chair with lumbar support function, comprising: a chair back 4 tiltedly arranged on the rear side of the top of a seat body 1, a lumbar support 2 and an adjustment mechanism are installed on the front side of the chair back 4 in sequence from the outside to the inside, the adjustment mechanism comprises a rotatable screw 6 and a screw sleeve 7 screwed on the screw 6, a connecting mechanism is connected between the screw sleeve 7 and the bottom end of the lumbar support 2, the top end of the lumbar support 2 is rotatably installed on the chair back 4, and when the screw sleeve 7 moves on the screw 6, it is used to drive the lumbar support 2 to be pushed outward or pulled back inward.

[0020] As described above, when using the chair back 4, seat body 1, lumbar support 2 and adjustment mechanism provided by the utility model, the top of the lumbar support 2 is flipped and installed on the chair back 4, the screw 6 in the adjustment mechanism is longitudinally rotated and installed on the chair back 4, the screw sleeve 7 is screwed on the screw 6, and the screw sleeve 7 is connected to the inner side of the bottom of the lumbar support 2 through the connecting mechanism. When the screw 6 rotates, one end of the connecting mechanism can be driven to move in the longitudinal direction through the worm gear principle of the screw 6 and the screw sleeve 7, so that the lumbar support 2 is driven to flip on the chair back 4 through the other end of the connecting mechanism. When the screw sleeve 7 moves upward, the bottom of the lumbar support 2 can be driven to approach the chair back 4 through the connecting mechanism. When the screw sleeve 7 moves downward, the bottom of the lumbar support 2 can be driven away from the chair back 4 through the connecting mechanism. While the lumbar support 2 supports the waist, the position of the lumbar support 2 can be adjusted according to different users.

[0021] Further, in order to conceal the lumbar support 2 on the seat back 4, refer to Figure 2-3 As shown, a mounting groove 5 is provided on the front side of the chair back 4, and rotating shafts 8 that can rotate in the mounting groove 5 are installed on both sides of the top of the lumbar support 2. The mounting groove 5 provides a mounting position for the lumbar support 2. When the lumbar support 2 is not in use, the lumbar support 2 can be stored in the mounting groove 5, and when the lumbar support 2 is in use, the lumbar support 2 can be pushed out of the mounting groove 5.

[0022] Further, in order to connect the screw sleeve 7 and the waist support 2, as shown in Figure 2, the connection mechanism includes a connecting rod 3, and the two ends of the connecting rod 3 are rotatably mounted on the screw sleeve 7 and the waist support 2. The waist support 2 with an arc plate structure is adapted to the waist of the user, so that the waist can be supported by the waist support 2.

[0023] Furthermore, in order to allow the lumbar support 2 to support the waist, refer to Figure 2 As shown, the lumbar support 2 is an arc plate-shaped structure, and the arc-shaped structure of the lumbar support 2 faces outwards.

[0024] In the present utility model, combined with Figure 2 As shown, the chair back 4 of this embodiment is also equipped with a motor 15 for driving the screw rod 6 to rotate, and one side of the motor 15 is electrically connected to a rechargeable battery 9, which is detachably installed on the rear side of the chair back 4.

[0025] Combination Figure 2As shown, a mounting chamber 12 communicating with the mounting groove 5 is provided on the chair back 4 , a motor 15 is installed in the mounting chamber 12 , and a screw rod 6 is longitudinally rotatably installed in the mounting groove 5 .

[0026] As mentioned above, when using the motor 15 provided by the utility model, the motor 15 is a servo motor, which is installed on the chair back 4 through the installation compartment 12, and is powered by the rechargeable battery 9. The motor 15 is driven and controlled by the rotary switch, which is not shown in the figure. The rotary switch can be installed at a position where the user's hand can reach. When the rotary switch rotates forward, the servo motor drives the screw 6 to rotate forward, and the lumbar support 2 is pushed outward. When the rotary switch is reversed, the servo motor drives the screw 6 to reverse, and the lumbar support 2 is pulled back inward.

[0027] Further, in order to make the rechargeable battery 9 detachable, refer to Figure 2 As shown, a battery compartment for accommodating the rechargeable battery 9 is provided on the rear side of the chair back 4, a cover plate 10 is provided on the outside of the battery compartment, a fastening bolt 11 is provided on the outside of the top of the cover plate 10 and is screwed into the chair back 4, a limit plate 14 is provided on the outside of the bottom end of the battery compartment, and a slot 13 for accommodating the limit plate 14 is provided on the outside of the bottom of the cover plate 10. The rechargeable battery 9 can be installed in the chair back 4 through the battery compartment, the bottom of the cover plate 10 is plugged into the inner side of the limit plate 14 through the slot 13, and the top of the cover plate 10 is locked and installed in the battery compartment by the fastening bolt 11. After removing the fastening bolt 11, the cover plate 10 can be taken out of the battery compartment, and the rechargeable battery 9 in the battery compartment can be disassembled and installed.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A home chair with lumbar support function, characterized in that: include: A chair back (4) is tiltedly arranged at the rear side of the top of a seat body (1), and a lumbar support (2) and an adjustment mechanism are installed on the front side of the chair back (4) in sequence from the outside to the inside. The adjustment mechanism includes a rotatable screw rod (6) and a screw sleeve (7) screwed on the screw rod (6). A connecting mechanism is connected between the screw sleeve (7) and the bottom end of the lumbar support (2). The top end of the lumbar support (2) is rotatably installed on the chair back (4). When the screw sleeve (7) moves on the screw rod (6), it is used to drive the lumbar support (2) to be pushed outward or pulled back inward.

2. The home chair with lumbar support function according to claim 1, characterized in that: The chair back (4) is also equipped with a motor (15) for driving the screw rod (6) to rotate. One side of the motor (15) is electrically connected to a rechargeable battery (9). The rechargeable battery (9) is detachably mounted on the rear side of the chair back (4).

3. The home chair with lumbar support function according to claim 2, characterized in that: A battery compartment for accommodating a rechargeable battery (9) is provided on the rear side of the chair back (4); a cover plate (10) is provided on the outside of the battery compartment; a fastening bolt (11) is provided on the outer side of the top of the cover plate (10) and is screwed into the chair back (4); a limit plate (14) is provided on the outer side of the bottom end of the battery compartment; and a slot (13) for accommodating the limit plate (14) is provided on the outer side of the bottom of the cover plate (10).

4. The home chair with lumbar support function according to claim 2, characterized in that: The front side of the chair back (4) is provided with a mounting groove (5), and both sides of the top of the lumbar support (2) are provided with rotating shafts (8) that can rotate in the mounting groove (5). The chair back (4) is provided with a mounting chamber (12) that is connected to the mounting groove (5), the motor (15) is installed in the mounting chamber (12), and the screw rod (6) is longitudinally rotatably installed in the mounting groove (5).

5. The home chair with lumbar support function according to claim 1, characterized in that: The connecting mechanism comprises a connecting rod (3), and two ends of the connecting rod (3) are rotatably mounted on a threaded sleeve (7) and a waist support (2) respectively.

6. The home chair with lumbar support function according to claim 1, characterized in that: The waist support (2) is a circular arc plate structure, and the circular arc structure of the waist support (2) faces outwards.

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