Waist support automatic adjusting assembly and seat

Abstract

The utility model discloses an automatic waist support adjusting assembly which comprises a mounting seat, and a mounting cavity is formed in the mounting seat. The pushing mechanism comprises a pushing rod and a pushing seat, the pushing seat is mounted in the mounting cavity, a guide cavity is formed in the pushing seat, the pushing rod is slidably mounted in the guide cavity, and the guide cavity is used for guiding the pushing rod to slide in the front-back direction; and the driving mechanism is mounted in the mounting cavity and used for driving the pushing rod to slide in the front-back direction. The utility model further discloses a seat, the seat comprises the automatic waist support adjusting assembly, and the mounting seat is connected to a seat back of the seat; and the push rod is connected with the waist support. According to the automatic waist support adjusting assembly and the seat, the driving mechanism can drive the pushing rod to slide back and forth relative to the guiding cavity of the pushing seat and drive the waist support connected with the pushing rod to move back and forth, automatic adjustment of the position of the waist support is achieved, manual adjustment is not needed, and adjustment is accurate and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an automatic waist support adjustment component and a seat. Background Art

[0002] At present, existing chairs with built-in lumbar supports are divided into fixed position type and gear adjustment type. The fixed position type means that there is a support structure at the corresponding position of the human waist, which cannot be adjusted and moved; the gear adjustment type means that the lumbar support is set with different adjustment gears based on the former, which usually requires users to adjust manually multiple times, and the adjustment is rough and cannot achieve precise adjustment.

[0003] The waist position of users of different heights and body shapes is different and their personal habits are different. Fixed-position lumbar pillows cannot adapt to most users. Adjustable lumbar pillows usually require multiple manual gear adjustments to achieve a more ideal effect. In actual experience, the adjustment process is complicated and troublesome. Utility Model Content

[0004] The utility model aims to provide an automatic lumbar support adjustment component and a seat, which can drive a push rod to slide forward and backward relative to a guide cavity of a push seat through a driving mechanism, drive the lumbar support connected thereto to move forward and backward, and realize automatic adjustment of the lumbar support position.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Lumbar support automatic adjustment assembly, including:

[0007] A mounting seat, wherein a mounting cavity is provided in the mounting seat;

[0008] The pushing mechanism comprises a pushing rod and a pushing seat, wherein the pushing seat is installed in the installation cavity, the pushing seat has a guide cavity, the pushing rod is slidably installed in the guide cavity, and is used to connect the waist support, and the guide cavity is used to guide the pushing rod to slide along the front-back direction;

[0009] A driving mechanism is installed in the installation cavity and is used to drive the push rod to slide along the front-rear direction.

[0010] Furthermore, a threaded hole is provided in the pushing rod; the driving mechanism includes a driving motor and a driving screw, and the driving motor is installed in the installation cavity; one end of the driving screw is synchronously connected to the rotating shaft of the driving motor, and the other end is inserted into the threaded hole and cooperates with the pushing rod thread.

[0011] Furthermore, a nut is fixedly connected inside the push rod, and the threaded hole is provided in the nut.

[0012] Furthermore, the pushing mechanism further comprises a sliding sleeve, the sliding sleeve is fixedly connected in the pushing seat, and the guiding cavity is arranged in the sliding sleeve.

[0013] Furthermore, the push rod is provided with a touch control part, the sliding sleeve is provided with a first limit switch and a second limit switch, and the touch control part is used to touch the first limit switch or the second limit switch when the push rod slides to the extreme position to control the drive motor to stop working.

[0014] Furthermore, a mounting groove is provided at the bottom end of the sliding sleeve, the mounting groove passes through the guide cavity, a first circuit board is provided in the mounting groove, and the first limit switch and the second limit switch are provided on the first circuit board at intervals; when the push rod slides to the extreme position, the touch control part passes through the mounting groove to touch the first limit switch or the second limit switch.

[0015] Furthermore, a wire groove is provided at the bottom end of the pushing seat, a second circuit board is provided in the wire groove, a connection terminal is provided on the second circuit board, the connection terminal is electrically connected to the first circuit board, and the bottom end of the wire groove is sealed with a cover plate.

[0016] Furthermore, the mounting seat includes a first shell and a second shell, and the first shell and the second shell are spliced ​​in a detachable manner to form the mounting seat; the mounting cavity is formed inside the first shell and the second shell; and the pushing seat is fixed between the first shell and the second shell.

[0017] Furthermore, both side outer walls of the pushing seat are provided with snap-fitting grooves, and correspondingly, both the first shell and the second shell are provided with snap-fitting pieces, and the snap-fitting pieces are snap-fitted to the snap-fitting grooves.

[0018] Furthermore, a first limit block is provided on the push rod, and a second limit block is provided on the inner wall of the guide cavity, and the first limit block is used to abut against the second limit block to prevent the push rod from being separated from the guide cavity.

[0019] The seat comprises the above-mentioned lumbar support automatic adjustment component, wherein the mounting seat is connected to the backrest of the seat; and the pushing rod is connected to the lumbar support.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] In the utility model, the driving mechanism can drive the push rod to slide in the front-to-back direction, thereby driving the waist support connected thereto to adjust the waist support position forward and backward, without manual adjustment, and with a high degree of automation. Moreover, the sliding stroke of the push rod is controlled by the driving mechanism, and the adjustment of the waist support forward and backward position is more accurate and flexible, and stepless adjustment can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 This is a cross-sectional view of the first state of the utility model;

[0024] Figure 3 It is a cross-sectional view of the second state of the utility model;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the push seat of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the push rod of the utility model;

[0028] Figure 7 It is a structural schematic diagram of the sliding sleeve of the utility model.

[0029] In the figure: 10, mounting seat; 11, mounting cavity; 12, first shell; 13, second shell; 20, pushing mechanism; 21, pushing seat; 211, wire groove; 212, cover plate; 213, snap-in groove; 22, pushing rod; 221, nut; 222, first limit block; 23, sliding sleeve; 231, second limit block; 232, guide cavity; 233, mounting groove; 30, second circuit board; 40, drive motor; 41, drive screw; 50, first circuit board. DETAILED DESCRIPTION

[0030] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] like Figure 1-Figure 7 As shown, an automatic lumbar support adjustment component of the utility model includes a mounting seat 10, a pushing mechanism 20 and a driving mechanism. The mounting seat 10 is provided with a mounting cavity 11. The pushing mechanism 20 includes a pushing rod 22 and a pushing seat 21. The pushing seat 21 is installed in the mounting cavity 11. The pushing seat 21 has a guide cavity 232. The pushing rod 22 is slidably installed in the guide cavity 232 for connecting the lumbar support of the seat. The guide cavity 232 extends along the front-rear direction, thereby guiding the pushing rod 22 to slide along the front-rear direction.

[0034] The driving mechanism is installed in the installation cavity 11, and the driving mechanism can drive the pushing rod 22 located in the guide cavity 232 of the pushing seat 21 to slide along the front-rear direction. After the pushing rod 22 is connected to the lumbar support, the sliding of the pushing rod 22 can drive the lumbar support to adjust its front-rear position.

[0035] When in use, the push rod 22 is connected to the lumbar support of the seat, and the mounting seat 10 can be connected to the backrest of the seat. The user sits on the seat, and the lumbar support on the backrest supports the user's waist. If the lumbar support position needs to be adjusted backward, the user can control the driving mechanism to drive the push rod 22 to slide backward along the guide cavity 232, and the push rod 22 drives the lumbar support to move backward, so as to adjust the lumbar support position backward. Figure 2 In the first state, the push rod 22 slides backward to a position further back than the guide cavity 232. On the contrary, if the user needs to adjust the lumbar support forward, the driving mechanism can be controlled to drive the push rod 22 to slide forward along the guide cavity 232, and the push rod 22 drives the lumbar support forward to achieve the forward adjustment of the lumbar support. Figure 3In this second state, the push rod 22 slides forward to a position closer to the front relative to the guide cavity 232.

[0036] In this way, the driving mechanism drives the push rod 22, and then drives the waist support connected thereto to adjust the front and rear position of the waist support, which is convenient to control, does not require manual adjustment, and has a high degree of automation. Moreover, the sliding stroke of the push rod 22 is controlled by the driving mechanism, and the adjustment of the front and rear position of the waist support is more accurate and flexible, and can achieve stepless adjustment.

[0037] Furthermore, in this embodiment, a threaded hole extending along the sliding direction (i.e., the front-to-back direction) is provided in the push rod 22, and the above-mentioned driving mechanism includes a driving motor 40 and a driving screw 41. The driving motor 40 is installed in the installation cavity 11, and one end of the driving screw 41 is synchronously connected with the rotating shaft of the driving motor 40, and the other end of the driving screw 41 is inserted into the threaded hole and threadedly matched with the push rod 22. When the rotating shaft of the driving motor 40 rotates, the driving screw 41 is driven to rotate, and the driving screw 41 drives the push rod 22 to slide forward and backward under the guidance of the guide cavity 232, and the sliding direction and distance of the push rod 22 are controlled by the rotation direction and number of turns of the driving motor 40, so as to adjust the front-to-back position of the lumbar support accurately and flexibly.

[0038] The rotating shaft of the driving motor 40 may be directly connected to the driving screw 41 , or may be connected to the driving screw 41 via a gear transmission mechanism.

[0039] In one of the embodiments, a nut 221 is fixedly connected to the push rod 22, and the nut 221 provides the above-mentioned threaded hole. Compared with directly processing the threaded hole in the push rod 22, the nut 221 can not only reduce the processing difficulty, but also facilitate later maintenance. When the thread is worn and affects the use, only the nut 221 needs to be replaced, which is low-cost and simple to operate.

[0040] In other embodiments, the driving mechanism and the push rod 22 may be driven by providing a rack on the push rod 22, so that the drive motor drives the gear to rotate, and the meshing of the gear and the rack drives the push rod 22 to slide forward and backward. Alternatively, the driving mechanism may be a cylinder, and the push rod 22 is connected to the piston rod of the cylinder, or other driving structures that can drive the push rod 22 to slide in the forward and backward directions.

[0041] Furthermore, the pushing mechanism 20 further includes a sliding sleeve 23, which is fixedly connected to the pushing seat 21, and the guide cavity 232 is provided in the sliding sleeve 23. Based on this structure, a cavity for assembling the sliding sleeve 23 can be provided in the pushing seat 21, and the sliding sleeve 23 is assembled into the cavity of the pushing seat 21 by screws or clamping, and then the pushing rod 22 is assembled into the guide cavity 232 of the sliding sleeve 23, so that the guiding cavity 232 required for the pushing rod 22 to slide forward and backward is provided by the sliding sleeve 23, and the process difficulty is reduced compared with directly machining the guiding cavity 232 inside the pushing seat 21, and the later maintenance is more convenient, and the cost of replacing the sliding sleeve 23 is low.

[0042] In order to control the forward and backward sliding stroke of the push rod 22, a touch control unit is provided on the push rod 22, and a first limit switch and a second limit switch for controlling the drive motor 40 to stop working are correspondingly provided on the sliding sleeve 23. In this way, during the forward and backward sliding process of the push rod 22, when the touch control unit on the push rod 22 touches the first limit switch or the second limit switch, the sliding stroke of the push rod 22 reaches the limit position, and the first limit switch or the second limit switch will control the drive motor 40 to stop working.

[0043] Specifically, the first limit switch and the second limit switch can be set at two extreme positions of the sliding sleeve 23 in the front-rear direction. The first limit switch can be located at the relatively front side of the sliding sleeve 23, and the second limit switch can be located at the relatively rear side of the sliding sleeve 23. In this way, when the push rod 22 drives the lumbar support forward to adjust the position, when the touch control of the push rod 22 touches the first limit switch, the push rod 22 has slid forward to the extreme position, and the first limit switch will control the drive motor 40 to stop working. On the contrary, when the push rod 22 drives the lumbar support backward to adjust the position, when the touch control of the push rod 22 touches the second limit switch, the push rod 22 has slid backward to the extreme position, and the second limit switch will control the drive motor 40 to stop working.

[0044] The bottom end of the sliding sleeve 23 is provided with a mounting groove 233, and the mounting groove 233 passes through the guide cavity 232. A first circuit board 50 is provided in the mounting groove 233. A first limit switch and a second limit switch are provided on the first circuit board 50 at intervals. The first circuit board 50 integrates the working circuits of the first limit switch, the second limit switch and the driving motor 40. When the push rod 22 slides forward or backward to the limit position, the touch control part can pass through the mounting groove 233 to touch the first limit switch or the second limit switch, and the driving motor 40 stops working.

[0045] In this embodiment, the first limit switch and the second limit switch are Hall switches, and the touch panel is a magnetic touch panel, and the touch control is realized by magnetic induction between the magnetic touch panel and the Hall switch. In other embodiments, the first limit switch and the second limit switch may also be grating switches or other touch type switches.

[0046] In this embodiment, a wire groove 211 is provided at the bottom end of the pushing seat 21, and a second circuit board 30 is provided in the wire groove 211. The second circuit board 30 is provided with wiring terminals, and the wiring terminals are electrically connected to the first circuit board 50; the bottom end of the wire groove 211 is covered with a cover plate 212, so that the second circuit board 30 serves as a transfer circuit board, and the working circuits of the first limit switch and the second limit switch on the first circuit board 50 are transferred to the second circuit board 30 through the wiring terminals, and the control circuit of the drive motor 40 can be directly connected to the wire groove 211 and electrically connected to the second circuit board 30.

[0047] For easy assembly, the mounting base 10 includes a first shell 12 and a second shell 13, and the first shell 12 and the second shell 13 are spliced ​​in a detachable manner to form the mounting base 10; the mounting cavity 11 is formed inside the first shell 12 and the second shell 13; the push seat 21 is connected between the first shell 12 and the second shell 13 and fixed by snapping or other connection methods.

[0048] In addition, in order to prevent the push seat 21 from moving after being assembled to the installation cavity 11, the push seat 21 can be fixed to the first shell 12 and the second shell 13 by snapping. Specifically, in the present embodiment, the outer walls on both sides of the push seat 21 are provided with snap-in grooves 213, and the first shell 12 and the second shell 13 are provided with snap-in plates, which are used to snap into the snap-in grooves 213. On the one hand, when the first shell 12 and the second shell 13 are assembled to both sides of the push seat 21, the snap-in plates can be snap-in corresponding to the corresponding snap-in grooves 213 to achieve pre-installed positioning. On the other hand, after the first shell 12 and the second shell 13 are locked with structures such as screws or bolts, the snap-in cooperation between the snap-in plates and the snap-in grooves 213 can also prevent the push seat 21 and the installation cavity 11 from moving or shaking, and the assembly structure is more stable.

[0049] A first limit block 222 may be further provided on the push rod 22, and a second limit block 231 may be correspondingly provided on the inner wall of the guide cavity 232. Specifically, the second limit block 231 may be set at the open end of the guide cavity 232 for the push rod 22 to extend out, and the first limit block 222 may be located at a position where the push rod 22 is away from the second limit block 231. In this way, when the push rod 22 slides from the rearmost position to the frontmost position, the first limit block 222 abuts against the second limit block 231 to prevent the push rod 22 from being separated from the guide cavity 232, thereby realizing the limitation of the mechanical structure.

[0050] The utility model also provides a seat, including the above-mentioned lumbar support automatic adjustment assembly, which is used to adjust the lumbar support position of the seat, wherein the mounting seat 10 is connected to the backrest of the seat, and the push rod 22 is connected to the lumbar support. The other structures of the seat are the same as those in the prior art and are not described in detail here.

[0051] Finally, it should be noted that the above-mentioned implementation modes are only optional embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Lumbar support automatic adjustment component, characterized in that: include, A mounting seat, wherein a mounting cavity is provided in the mounting seat; The pushing mechanism comprises a pushing rod and a pushing seat, wherein the pushing seat is installed in the installation cavity, the pushing seat has a guide cavity, the pushing rod is slidably installed in the guide cavity, and is used to connect the waist support, and the guide cavity is used to guide the pushing rod to slide along the front-back direction; A driving mechanism is installed in the installation cavity and is used to drive the push rod to slide along the front-rear direction.

2. The automatic adjustment waist support assembly according to claim 1, characterized in that: A threaded hole is provided in the push rod; the driving mechanism includes a driving motor and a driving screw, and the driving motor is installed in the installation cavity; one end of the driving screw is synchronously connected to the rotating shaft of the driving motor, and the other end is inserted into the threaded hole and cooperates with the push rod thread.

3. The automatic adjustment waist support assembly according to claim 2, characterized in that: A nut is fixedly connected inside the push rod, and the threaded hole is arranged in the nut.

4. The automatic adjustment waist support assembly according to claim 2, characterized in that: The pushing mechanism further comprises a sliding sleeve, the sliding sleeve is fixedly connected in the pushing seat, and the guiding cavity is arranged in the sliding sleeve.

5. The automatic adjustment waist support assembly according to claim 4, characterized in that: The push rod is provided with a touch control part, and the sliding sleeve is provided with a first limit switch and a second limit switch. The touch control part is used to touch the first limit switch or the second limit switch when the push rod slides to the extreme position to control the drive motor to stop working.

6. The automatic adjustment waist support assembly according to claim 5, characterized in that: A mounting groove is provided at the bottom end of the sliding sleeve, and the mounting groove passes through the guide cavity. A first circuit board is provided in the mounting groove, and the first limit switch and the second limit switch are provided on the first circuit board at intervals; when the push rod slides to the extreme position, the touch control part passes through the mounting groove to touch the first limit switch or the second limit switch.

7. The automatic adjustment waist support assembly according to claim 6, characterized in that: A wire groove is provided at the bottom end of the pushing seat, a second circuit board is provided in the wire groove, a connection terminal is provided on the second circuit board, the connection terminal is electrically connected to the first circuit board, and a cover plate is provided at the bottom end of the wire groove.

8. The automatic adjustment waist support assembly according to any one of claims 1 to 7, characterized in that: The mounting seat includes a first shell and a second shell, and the first shell and the second shell are detachably assembled to form the mounting seat; the mounting cavity is formed inside the first shell and the second shell; and the pushing seat is fixed between the first shell and the second shell.

9. The automatic adjustment waist support assembly according to claim 8, characterized in that: The outer walls on both sides of the pushing seat are provided with snap-fitting grooves, and correspondingly, the first shell and the second shell are provided with snap-fitting pieces, and the snap-fitting pieces are snap-fitted to the snap-fitting grooves.

10. The automatic adjustment waist support assembly according to any one of claims 1 to 7, characterized in that: The push rod is provided with a first limit block, and the inner wall of the guide cavity is provided with a second limit block, and the first limit block is used to abut against the second limit block to prevent the push rod from being separated from the guide cavity.

11. A chair, comprising the automatic lumbar support adjustment assembly according to any one of claims 1 to 10, wherein the mounting seat is connected to a backrest of the chair, and the push rod is connected to the lumbar support.

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