Dual-motor driving mechanism and mattress thereof

Abstract

The utility model provides a dual-motor driving mechanism and a mattress thereof, and relates to the technical field of intelligent mattresses, the dual-motor driving mechanism comprises a cover body, the cover body is provided with two driving members capable of independently running; the driving component comprises a motor, the motor is connected with a first screw rod, and the first screw rod is in meshed connection with the gear; the gear is coaxially connected to a second screw rod, and the second screw rod is in threaded connection with a sliding block; a limiting component is arranged in the cover body to limit the sliding block to rotate along with the second screw rod, and the sliding block is pushed out to ascend and descend. The utility model has the beneficial effects that the double motors adopt a synchronous driving mechanism, and the synchronous driving mechanism is provided with two driving components capable of independently running and can be independently used for controlling the lifting motion of the head position and the foot position of the mattress; and the mattress is operated by using an independent bidirectional synchronous motor, although two dual-motor driving mechanisms are applied to the two sides of the mattress, the two dual-motor driving mechanisms are connected with each other without adopting a transmission shaft, so that the transmission shaft is prevented from being twisted off, and the after-sale problem generated in the use process of the mattress is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent mattresses, in particular to a dual-motor drive mechanism and a mattress thereof, and is particularly applied to a lifting bed. Background Art

[0002] Mattress is an item between the human body and the bed used to ensure consumers to get healthy and comfortable sleep. Mattresses are made of various materials, and mattresses made of different materials can bring different sleeping effects to people. At present, in order to meet people's use needs, many patents on lifting mattress structures have been launched. For example, Chinese patent announcement number CN208524295U discloses an intelligent bionic suspended mattress, which describes the driving device as follows: push blocks, motors, gears, push screws and transmission screws are distributed on both sides of the bionic cone arm, and the motors on both sides are connected together through a transmission shaft to form a set of driving devices, and the motors set in the same bionic cone arm are driven by the transmission shaft to achieve synchronous drive.

[0003] The motors on both sides of the drive device are connected through a transmission shaft. However, after a long period of use, there will inevitably be errors in the operation between the motors on both sides (such as rotation speed, start and stop time, etc.), which will cause the drive shaft to twist and easily break. In addition, since the entire drive device is wrapped with filling materials such as sponge when the mattress is formed later, the drive shaft is directly exposed to the outside and it is easy to roll in the filling material when it rotates, affecting the performance.

[0004] Based on this, the utility model discloses a dual-motor driving mechanism to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a dual-motor drive mechanism and a mattress thereof, which has two independently operable drive components and can be used to control the lifting and lowering movements of the head position and the foot position of the mattress separately.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A dual-motor drive mechanism includes a cover body, which is provided with two independently operable drive components; the drive components include a motor, the motor is connected to a first screw, and the first screw is meshingly connected to a gear; the gear is coaxially connected to a second screw, and the second screw is threadedly connected to a slider; a limiting component is provided in the cover body to limit the slider to rotate following the second screw.

[0008] Furthermore, the cover body includes a lower cover and an upper cover, and the motor is connected to the lower cover; the end of the second screw is connected to a bearing, and the slider and the bearing are respectively distributed on both sides of the gear.

[0009] Furthermore, the limiting component includes a slide groove formed by the lower cover and the upper cover, the slide groove is arranged along the length direction of the second screw, and the longitudinal section shape of the slide groove matches the shape of the slider.

[0010] Furthermore, a gap is reserved below the slide slot, a first travel sensing switch and a second travel sensing switch are arranged below the gap, and both the first sensing switch and the second sensing switch are electrically connected to the motor; a sensing member extending toward the gap is arranged on the lower surface of the slider.

[0011] Furthermore, the second screw rod includes a main rod section and an assembly section, and a limiting step is provided between the main rod section and the assembly section; the gear is inserted into one side of the assembly section and fixed on one side of the limiting step; the side of the gear is connected to a clamping piece, and the clamping piece is connected to the inner ring of the bearing.

[0012] Furthermore, the assembly section is in the shape of a D-axis, and the mounting hole of the clamping member matches the D-axis shape; the clamping member is protruded around to form protruding teeth, and the corresponding position of the gear has a recessed position, and the protruding teeth are embedded in the recessed position.

[0013] Furthermore, the end of the assembly section is threadedly connected with a locking nut, and the locking nut is connected to the inner ring of the bearing.

[0014] Furthermore, a frame plug-in hole is protrudingly provided on the surface of the lower cover, and the frame plug-in hole is arranged on the same side of the lower cover as the motor.

[0015] Furthermore, the interior of the lower cover and the upper cover are provided with a reinforced support grid.

[0016] The utility model seeks to protect a mattress, comprising the above-mentioned dual-motor drive mechanism; the number of the dual-motor drive mechanisms is two, symmetrically located on both sides of the mattress; the dual-motor drive mechanisms on both sides can be controlled by a controller to perform synchronous movement.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The dual-motor drive mechanism of the utility model has two independently operable drive components, which can be used separately to control the lifting and lowering movements of the head position and the foot position of the mattress; and the motors are operated separately. Although the two dual-motor drive mechanisms are applied to both sides of the mattress, they are not connected to each other by transmission shafts, thus avoiding the transmission shaft from twisting off and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 is a three-dimensional diagram of the dual-motor drive mechanism described in this embodiment of the utility model;

[0021] Figure 2 is a cross-sectional view of the dual-motor drive mechanism described in this embodiment of the utility model;

[0022] Figure 3 The lower cover and the upper cover of the dual-motor drive mechanism described in this embodiment of the utility model are in a separated state;

[0023] Figure 4 It is a front view of the lower cover of the dual-motor drive mechanism described in this embodiment of the utility model;

[0024] Figure 5 yes Figure 4 Enlarged view of circle A in the middle;

[0025] Figure 6 It is a stereoscopic diagram of the gear, the second screw rod, and the bearing described in this embodiment of the utility model;

[0026] Figure 7 yes Figure 6 A cross-sectional view of

[0027] Figure 8 It is an exploded view of a stereogram of the gear, the second screw rod, and the bearing described in this embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of the mattress described in this embodiment of the utility model.

[0029] In the figure:

[0030] 1. Cover body; 101. Lower cover; 102. Upper cover; 2. Motor; 3. First screw; 4. Gear; 401. Concave position; 5. Second screw; 501. Main rod section; 502. Assembly section; 503. Limit step; 6. Slider; 601. Induction member; 7. Bearing; 8. Slide; 9. Gap; 10. First stroke sensing switch; 11. Second stroke sensing switch; 12. Fastening member; 1201. Protruding teeth; 13. Anti-loosening nut; 14. Frame plug-in hole; 15. Strengthen support grid. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] like Figures 1 to 8As shown, a dual-motor drive mechanism includes a cover body 1, and the cover body 1 is provided with two independently operable drive components; the dual-motor drive mechanism is applied to a mattress to drive the head and foot of the mattress to move, so in the mechanism, one of the drive components drives the lifting and lowering of the head position, and the other drive component drives the lifting and lowering of the foot position, and the two drive components are independently arranged and do not affect each other.

[0033] The following is an explanation of one of the driving components, which includes a motor 2, which is connected to a first screw 3, which is meshingly connected to a gear 4, and the motor 2 drives the first screw 3 to rotate, thereby driving the gear 4 to rotate; the gear 4 is coaxially connected to the second screw 5, and the second screw 5 is threadedly connected to a slider 6; a limiting component is provided in the cover body 1 to limit the slider 6 to rotate following the second screw 5.

[0034] In this embodiment, the first screw 3 is a worm, the gear 4 is a worm wheel, and the two are combined into a worm wheel structure; the second screw 5 is a lead screw, and a lead screw sleeve matching the lead screw is provided in the slider 6. At the same time, because the slider 6 is limited by the limiting component, the second screw 5 and the slider 6 form a lead screw module structure. Therefore, from the above structure, it can be seen that the rotation of the motor 2 drives the second screw 5 to rotate through the first screw 3 and the gear 4, and finally drives the slider 6 to slide left and right; the slider 6 slides outward to lift the mattress and make the mattress rise; the slider 6 slides inward to reset, and no longer lifts the mattress, so that the mattress falls and lies flat.

[0035] The limiting component includes a slide groove 8 formed by the lower cover 101 and the upper cover 102. The slide groove 8 is arranged along the length direction of the second screw 5. The longitudinal section shape of the slide groove 8 matches the shape of the slider 6. Figures 1 to 3 It can be seen that the longitudinal section of the slider 6 is square-shaped, and the slide groove 8 is also a matching square shape. That is, due to the limitation of the slide groove 8, the slider 6 cannot rotate with the rotation of the second screw rod 5 and can only move back and forth along the length direction of the second screw rod 5.

[0036] As another embodiment of the limiting component, the limiting component may be a guide rail along the length direction of the second screw rod 5 , and the slider 6 is slidably connected to the guide rail; the guide rail also achieves the purpose of limiting the rotation of the slider 6 .

[0037] The cover body 1 includes a lower cover 101 and an upper cover 102, the upper cover 102 is fixedly connected to the lower cover 101 by screws; the motor 2 is connected to the lower cover 101; the end of the second screw rod 5 is connected to the bearing 7, and the slider 6 and the bearing 7 are respectively distributed on both sides of the gear 4. The bearing 7 allows the second screw rod 5 to be rotatably assembled in the cover body 1.

[0038] from Figure 2It can be seen that a gap 9 is reserved below the slide slot 8. In fact, the gap 9 is the junction between the lower end of the lower cover 101 and the lower end of the upper cover 102. A first travel sensing switch 10 and a second travel sensing switch 11 are arranged below the gap 9. Both the first and second travel sensing switches are electrically connected to the motor 2. A sensing member 601 extending toward the gap 9 is arranged on the lower surface of the slider 6. In this embodiment, both the first and second travel sensing switches 10 and 11 are proximity switches. Figure 3 and Figure 4 It can be seen that the second stroke sensing switch 11 is the maximum position for controlling the slider 6 to slide outward, and the first stroke sensing switch 10 is the maximum position for controlling the slider 6 to slide inward. When the slider 6 is moving, when the sensing member 601 of the slider 6 is close to the sensing range of the second stroke sensing switch 11, the second stroke sensing switch 11 sends a signal, which is finally transmitted to the motor 2 to stop; similarly, when the sensing member 601 of the slider 6 is close to the sensing range of the first stroke sensing switch 10, the first stroke sensing switch 10 sends a signal, which is finally transmitted to the motor 2 to stop, thereby avoiding excessive movement of the slider 6 to form damage.

[0039] like Figures 6 to 8 As shown, the second screw rod 5 includes a main rod section 501 and an assembly section 502. The main rod section 501 has a thread and is used in conjunction with the slider 6. The slider 6 is connected to the main rod section 501. A limiting step 503 is provided between the main rod section 501 and the assembly section 502. The gear 4 is inserted from one side of the assembly section 502 and fixed on one side of the limiting step 503. The limiting step 503 is used to limit the installation of the gear 4. The side of the gear 4 is connected to a tightening member 12, and the tightening member 12 is connected to the inner ring of the bearing 7. The end of the assembly section 502 is threadedly connected with a locking nut 13, and the locking nut 13 is connected to the inner ring of the bearing 7. Therefore, after the gear 4 and the locking member 12 are sequentially inserted into the assembly section 502 and the locking nut 13 is tightened, the gear 4 can be locked and fixed. Moreover, the locking member 12 and the locking nut 13 are both connected to the inner ring of the bearing 7, and do not affect the rotation of the outer ring of the bearing 7, that is, do not affect the rotation of the second screw 5.

[0040] like Figure 8 As shown, the assembly section 502 is D-shaped, and the mounting hole of the fastening member 12 matches the D-shaped axis; therefore, when the fastening member 12 is installed to the position of the D-shaped axis, the effect of limited installation is achieved, that is, the fastening member 12 will not rotate relative to the assembly section 502; the fastening member 12 is protruded around to form a protruding tooth 1201, and the corresponding position of the gear 4 has a concave position 401, and the protruding tooth 1201 is embedded in the concave position 401; combined with Figure 7 as well as Figure 8It can be seen that this structure, which is installed by embedding the protruding teeth 1201 and the recessed position 401, can lock the rotation of the gear 4, so that the gear 4 will not rotate relative to the assembly section 502, making the structure stable and preventing slipping, thereby ensuring that the gear 4 and the second screw 5 rotate stably and synchronously, which helps to accurately control the moving position of the slider 6.

[0041] The surface of the lower cover 101 is protrudingly provided with a frame plug-in hole 14, and the frame plug-in hole 14 is arranged on the same side of the lower cover 101 as the motor 2; when applied to a mattress, two dual-motor drive mechanisms of the present application will be used, respectively located on the left and right sides of the mattress; at this time, the frame plug-in hole 14 is used to install the rib frame, and the rib frame is inserted and installed in the frame plug-in hole 14, which can achieve good definition; the frame plug-in hole 14 and the motor 2 are arranged on the inner side of the dual-motor drive mechanism (that is, the inner side of the lower cover 101). Since it is necessary to wrap a cotton pad outside the mattress later, it is arranged on the inner side, which can ensure that the outer contour of the entire mattress is flat, which is conducive to the smooth wrapping of the cotton pad and the subsequent bedspread.

[0042] The interior of the lower cover 101 and the upper cover 102 are both provided with a reinforcing support grid 15, which helps to enhance the compression resistance and support strength of the entire cover body 1 and prolong the service life.

[0043] The utility model claims protection for a mattress, such as Fig. 9 As shown, it includes the above-mentioned dual-motor drive mechanism; the number of dual-motor drive mechanisms is two, symmetrically located on both sides of the mattress; the dual-motor drive mechanisms on both sides can be controlled by a controller to perform synchronous movement; the synchronous movement refers to the synchronous movement of the driving components of the dual-motor drive mechanisms on both sides, and the simultaneous movement drives the lifting and lowering movement of the head or foot of the mattress.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-motor drive mechanism, characterized in that: The invention comprises a cover body (1), wherein the cover body (1) is provided with two independently operable driving components; the driving components comprise a motor (2), the motor (2) is connected to a first screw rod (3), the first screw rod (3) is meshingly connected to a gear (4); the gear (4) is coaxially connected to a second screw rod (5), and the second screw rod (5) is threadedly connected to a slider (6); a limiting component is provided inside the cover body (1) to limit the slider (6) to rotate following the second screw rod (5).

2. The dual-motor drive mechanism according to claim 1, characterized in that: The cover body (1) comprises a lower cover (101) and an upper cover (102), and the motor (2) is connected to the lower cover (101); the end of the second screw rod (5) is connected to a bearing (7), and the slider (6) and the bearing (7) are respectively distributed on both sides of the gear (4).

3. The dual-motor drive mechanism according to claim 2, characterized in that: The limiting component comprises a slide groove (8) formed by enclosing a lower cover (101) and an upper cover (102), wherein the slide groove (8) is arranged along the length direction of the second screw rod (5), and the longitudinal section shape of the slide groove (8) matches the shape of the slider (6).

4. The dual-motor drive mechanism according to claim 3, characterized in that: A gap (9) is reserved below the slide groove (8), and a first travel sensing switch (10) and a second travel sensing switch (11) are arranged below the gap (9), and the first sensing switch and the second sensing switch are both electrically connected to the motor (2); and a sensing member (601) extending toward the gap (9) is arranged on the lower surface of the slider (6).

5. The dual-motor drive mechanism according to claim 2, characterized in that: The second screw rod (5) comprises a main rod section (501) and an assembly section (502), and a limiting step (503) is provided between the main rod section (501) and the assembly section (502); the gear (4) is inserted into one side of the assembly section (502) and fixed on one side of the limiting step (503); the side of the gear (4) is connected to a fastening member (12), and the fastening member (12) is connected to the inner ring of the bearing (7).

6. The dual-motor drive mechanism according to claim 5, characterized in that: The assembly section (502) is in the shape of a D-axis, and the mounting hole of the fastening member (12) matches the D-axis shape; the fastening member (12) is formed with protruding teeth (1201) on all sides, and the corresponding position of the gear (4) has a recess (401), and the protruding teeth (1201) are embedded in the recess (401).

7. The dual-motor drive mechanism according to claim 6, characterized in that: The end of the assembly section (502) is threadedly connected with a locking nut (13), and the locking nut (13) is connected to the inner ring of the bearing (7).

8. The dual-motor drive mechanism according to claim 2, characterized in that: A frame plugging hole (14) is protrudingly provided on the surface of the lower cover (101), and the frame plugging hole (14) is arranged on the same side of the lower cover (101) as the motor (2).

9. The dual-motor drive mechanism according to claim 2, characterized in that: The lower cover (101) and the upper cover (102) both have a reinforced support grid (15) inside.

10. A mattress, characterized in that: It comprises the dual-motor drive mechanism as described in any one of claims 1 to 9 above; the number of the dual-motor drive mechanisms is two, which are symmetrically located on both sides of the mattress.

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