Dual-motor lifting device

Abstract

The utility model discloses a double-motor lifting device, which relates to the technical field of televisions and comprises a driving unit, a control unit and a connecting plate. The driving unit comprises a motor and a sliding block. The motor is used for driving the sliding block to slide up and down. The number of the driving units is two. The control unit is electrically connected with the motors of the two driving units so as to send control signals to the motors of the two driving units at the same time. The connecting plate is fixedly connected with the sliding blocks of the two driving units so that the sliding blocks of the two driving units can slide up and down synchronously. The connecting plate is used for connecting sound equipment. Compared with the prior art, the double-motor lifting device provided by the utility model can lift the sound equipment when the sound equipment is used, thereby reducing obstacles encountered during sound transmission, and ensuring the sound effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a television technology field especially a double motor lifting device. BACKGROUND

[0002] For the traditional television, the sound is hidden in the shell of the television, and the sound propagation has certain loss, which leads to the influence of the sound effect. If the sound is fixed outside the shell, it occupies a large space and is not beautiful enough. INVENTION CONTENTS

[0003] The utility model aims at providing a double motor lifting device to lift the sound.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0005] The utility model discloses a double motor lifting device, which comprises:

[0006] The driving unit comprises a motor and a sliding block, and the motor is used to drive the sliding block to slide up and down. The number of the driving unit is two.

[0007] The control unit is electrically connected with the motor of the two driving units respectively, so as to send control signals to the motors of the two driving units at the same time.

[0008] The connecting plate is fixedly connected with the sliding block of the two driving units respectively, so as to keep the sliding blocks of the two driving units from sliding up and down synchronously. The connecting plate is used to connect the sound.

[0009] Preferably, the double motor lifting device further comprises a bottom plate, the driving unit further comprises a circuit board and a shell, and the motor and the circuit board are both fixed on the shell. The shells of the two driving units are both fixed on the bottom plate.

[0010] Preferably, the double motor lifting device further comprises a shock pad, and the bottom plate is fixed on the shock pad.

[0011] Preferably, the driving unit further comprises a lead screw, a guide rod and a plurality of gears. The lead screw and the plurality of gears are rotatably installed on the shell, the output shaft of the motor is drivingly connected with the lead screw through the plurality of gears, the guide rod is fixed on the shell and is parallel to the lead screw, the sliding block is threadedly connected with the lead screw, and the guide rod penetrates through the sliding block.

[0012] Preferably, the double motor lifting device further comprises an elastic block fixed on the shell, and the elastic block is connected with the guide rod to apply an elastic thrust to the guide rod towards the lead screw.

[0013] Preferably, several stages of said gear constitute a reduction gear set.

[0014] Preferably, said control unit is mounted on said circuit board of one of said drive units.

[0015] Preferably, one side of said connecting plate is provided with several columns for insertion into a sound equipment.

[0016] Preferably, said double-motor lifting device further comprises a cover plate covering a side of said drive units away from said connecting plate.

[0017] Preferably, said double-motor lifting device further comprises a photoelectric switch for monitoring the position of said sliding block and a Hall sensor mounted on the rotor of said motor, said photoelectric switch and said Hall sensor being electrically connected to said control unit.

[0018] The utility model discloses relative to relevant technology has obtained following technical effect:

[0019] The utility model discloses two drive units, and the sliding block of two drive units can support the both ends of sound equipment respectively, guarantee the stability of the lifting process of sound equipment.

[0020] For the problem of asynchronization existing in the simultaneous work of two motors, the utility model solves the problem through the following scheme: on one hand, the control unit is electrically connected to two motors simultaneously, and the two motors can receive control signals simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or related technologies, the following will briefly introduce the drawings needed to be used in the embodiments, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0022] Figure 1 It is a schematic view of the double-motor lifting device of the embodiments of the utility model;

[0023] Figure 2 It is a schematic view of the cover plate;

[0024] Figure 3 It is Figure 1 It is a schematic view of the double-motor lifting device of the embodiments of the utility model after omitting the cover plate;

[0025] Figure 4 for Figure 3 A schematic diagram of a local structure from one perspective;

[0026] Figure 5 for Figure 4 A schematic diagram of a local structure from another perspective;

[0027] Figure 6 This is a schematic diagram of the local area where the reduction gear set is located.

[0028] In the diagram: 1-Control unit; 2-Connecting plate; 3-Column; 4-Motor; 5-Slider; 6-Circuit board; 7-Housing; 8-Frame; 9-Side cover; 10-Lead screw; 11-Guide rod; 12-Bearing; 13-Elastic block; 14-First stage gear; 15-Second stage gear; 16-Third stage gear; 17-Fourth stage gear; 18-Base plate; 19-Shock damping pad; 20-Cover plate; 21-Main board; 22-Side plate; 23-Photoelectric switch; 24-Hall sensor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The purpose of this invention is to provide a dual-motor lifting device for raising and lowering audio equipment.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1-6 This embodiment provides a dual-motor lifting device, including a drive unit, a control unit 1, and a connecting plate 2.

[0033] The drive unit includes a motor 4 and a slider 5. The motor 4 drives the slider 5 to slide up and down. There are two drive units. The control unit 1 is electrically connected to the motors 4 of both drive units to simultaneously send control signals to the motors 4 of both drive units. The connecting plate 2 is fixedly connected to the sliders 5 of both drive units to keep the sliders 5 of the two drive units sliding up and down synchronously. The connecting plate 2 is used to connect the audio equipment.

[0034] The working principle of the dual-motor lifting device in this embodiment is as follows:

[0035] The width of the sound equipment is usually large, and if a single motor is used for lifting, it is difficult to ensure that the support position of the sound equipment is on the vertical plane where the gravity center of the sound equipment is located, and the lifting process of the sound equipment is not stable. The two driving units are provided in the embodiment, and the sliders 5 of the two driving units can support the two ends of the sound equipment respectively, thereby ensuring the stability of the lifting process of the sound equipment. When the sound equipment is not used (for example, is stored in the shell of the television), the sound equipment is lifted to the upper position (for example, is lifted above the shell of the television) by the double-motor lifting device when the sound equipment is used.

[0036] For the different step problem existing when the two motors work simultaneously, the following scheme is used in the embodiment: on the one hand, the control unit 1 is electrically connected with the two motors 4 simultaneously, and the two motors 4 can receive control signals simultaneously; on the other hand, the connecting plate 2 is fixedly connected with the sliders 5 of the two driving units simultaneously, thereby ensuring the consistency of the heights of the two sliders 5.

[0037] As a possible example, in the embodiment, the double-motor lifting device further comprises a bottom plate 18, the driving unit further comprises a circuit board 6 and a shell 7, and the motor 4 and the circuit board 6 are fixed on the shell 7. The shells 7 of the two driving units are fixed on the bottom plate 18. When the double-motor lifting device works, the bottom plate 18 is in a vertical state.

[0038] The two driving units are fixed on the same bottom plate 18 simultaneously, thereby ensuring the relative position of the two driving units.

[0039] As a possible example, in the embodiment, the double-motor lifting device further comprises a damping pad 19, and the bottom plate 18 is fixed on the damping pad 19.

[0040] In actual use, the bottom plate 18 needs to be fixed on the adjacent structure (for example, the shell of the television), and the sound equipment transmits vibration energy outward when working. The damping pad 19 absorbs the vibration energy of the bottom plate 18 in the embodiment, thereby avoiding noise caused by the collision between the bottom plate 18 and the adjacent structure (for example, the shell of the television).

[0041] For example, the material of the damping pad 19 can be rubber or silicone.

[0042] As a possible example, in the embodiment, the driving unit further comprises a shell 7, a lead screw 10, a guide rod 11 and a plurality of gear stages. The shell 7 is fixed on the bottom plate 18, the lead screw 10 and the plurality of gear stages are rotatably installed on the shell 7, and the output shaft of the motor 4 is in transmission connection with the lead screw 10 through the plurality of gear stages. The guide rod 11 is fixed on the shell 7 and is parallel to the lead screw 10. The slider 5 is in threaded connection with the lead screw 10, and the guide rod 11 penetrates through the slider 5.

[0043] When the motor 4 works, the screw rod 10 is rotated through the transmission of several gear stages. Since the sliding block 5 is threadedly connected with the screw rod 10 and cannot rotate due to the restriction of the guide rod 11, the sliding block 5 will translate along the guide rod 11 when the screw rod 10 rotates. The screw rod 10 and the guide rod 11 are both vertically arranged, thereby realizing the lifting of the sliding block 5.

[0044] Exemplarily, bearings 12 are fixed on the shell 7, and the two ends of the screw rod 10 are matched with the corresponding bearings 12 respectively, so as to reduce the running resistance and the running noise.

[0045] As a possible example, in the embodiment, the double-motor lifting device further comprises elastic blocks 13 fixed on the shell 7, and the elastic blocks 13 are connected with the guide rod 11 to apply elastic pushing force to the guide rod 11 towards the screw rod 10.

[0046] It should be noted that there is a gap in the threadedly matched region of the screw rod 10 and the sliding block 5, and the vibration energy is transmitted outward during the sound work, and the screw rod 10 and the sliding block 5 will produce noise due to the collision. In the embodiment, the elastic force provided by the elastic blocks 13 makes the sliding block 5 press the screw rod 10 close to one side of the guide rod 11, so that the inner thread and the outer thread are in close contact, thereby avoiding the collision noise caused by the gap as much as possible.

[0047] Exemplarily, the material of the elastic blocks 13 is rubber block or silica gel block.

[0048] As a possible example, in the embodiment, several gear stages form a reduction gear set to improve the control accuracy of the height of the sliding block 5.

[0049] Exemplarily, the reduction gear set comprises a first gear 14, a second gear 15, a third gear 16 and a fourth gear 17, and the second gear 15 and the third gear 16 are double gear. The first gear 14 is fixed on the rotor of the motor 4, the large gear of the second gear 15 is engaged with the first gear 14, the small gear of the second gear 15 is engaged with the large gear of the third gear 16, and the small gear of the third gear 16 is engaged with the fourth gear 17.

[0050] As a possible example, in the embodiment, the control unit 1 is installed on the circuit board 6 of one of the driving units, and the control unit 1 and the motor 4 are both electrically connected with the adjacent circuit board 6. The circuit board 6 on which the control unit 1 is installed can be referred to as a main circuit board, and the circuit board 6 on which the control unit 1 is not installed can be referred to as a secondary circuit board.

[0051] As a possible example, in the embodiment, a plurality of stand columns 3 are arranged on one side of the connecting plate 2, and the stand columns 3 are used for being inserted into the sound equipment.

[0052] Here, the inserted sound equipment can be the shell of the inserted sound equipment, or a hanging ring, a hook or a hanging hole structure connected to the shell of the sound equipment.

[0053] Exemplarily, the stand 3 has stepped holes for mounting screws, and is arranged horizontally to lock the stand 3 with the sound device by the screws.

[0054] As a possible example, in the embodiment, the double-motor lifting device further comprises a cover plate 20 covering the side of the driving unit away from the connecting plate 2.

[0055] Exemplarily, the cover plate 20 comprises a main plate 21 and side plates 22 fixed perpendicularly on the edges of the main plate 21, the main plate 21 is parallel to the circuit board 6, and the side plates 22 are located on the side of the main plate 21 close to the circuit board 6. The cover plate 20 is fixedly connected with the bottom plate 18, and the side plates 22 are fixedly connected with the shell 7, so that the driving unit and the control unit 1 are located in the space surrounded by the cover plate 20 and the bottom plate 18.

[0056] Exemplarily, the shell 7 comprises a square box 8 and side covers 9. The circuit board 6, the motor 4, the lead screw 10, the guide rod 11 and the sliding block 5 are located in the square box 8, one outer side of the square box 8 has a recess, the deceleration gear set is located in the recess, and the side covers 9 are fixed in the slot of the recess.

[0057] As a possible example, in the embodiment, the double-motor lifting device further comprises a photoelectric switch 23 and a Hall sensor 24, the photoelectric switch 23 is used for monitoring the position of the sliding block 5, the Hall sensor 24 is installed on the rotor of the motor 4, and the photoelectric switch 23 and the Hall sensor 24 are electrically connected with the control unit 1.

[0058] After the photoelectric switch 23 detects that the sliding block 5 moves to the specified position, the control unit 1 sends a control signal to stop the two motors 4 from working. The Hall sensor 24 can monitor the rotating speed of the rotor of the motor 4, so as to monitor the working state of the motor 4 in real time, so that the control unit 1 can discover the abnormality of the motor 4 in the first time, and the control unit 1 stops the two motors 4 from working after discovering the abnormality of the motor 4, so as to minimize the loss.

[0059] The principle and implementation mode of the utility model are described by applying specific examples in the utility model, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range will be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A dual-motor lifting device, characterized in that, include: The driving unit includes a motor and a slider, wherein the motor is used to drive the slider to slide up and down; The number of drive units is two; The control unit is electrically connected to the motors of the two drive units respectively, so as to simultaneously send control signals to the motors of the two drive units; A connecting plate is fixedly connected to the sliders of the two drive units respectively, so as to keep the sliders of the two drive units sliding up and down synchronously; the connecting plate is used to connect the audio equipment.

2. The dual-motor lifting device according to claim 1, characterized in that: It also includes a base plate, and the drive unit further includes a circuit board and a housing. The motor and the circuit board are both fixed to the housing; the housings of both drive units are fixed to the base plate.

3. The dual-motor lifting device according to claim 2, characterized in that: It also includes a shock-absorbing pad, and the base plate is fixed on the shock-absorbing pad.

4. The dual-motor lifting device according to claim 2, characterized in that: The drive unit further includes a lead screw, a guide rod, and several stages of gears; the lead screw and several stages of gears are rotatably mounted on the housing, and the output shaft of the motor is connected to the lead screw via several stages of gears; the guide rod is fixed to the housing and is parallel to the lead screw; the slider is threadedly connected to the lead screw, and the guide rod passes through the slider.

5. The dual-motor lifting device according to claim 4, characterized in that: It also includes an elastic block fixed to the housing, the elastic block being connected to the guide rod to apply an elastic thrust toward the lead screw to the guide rod.

6. The dual-motor lifting device according to claim 4, characterized in that: Several stages of gears form a reduction gear set.

7. The dual-motor lifting device according to claim 2, characterized in that: The control unit is mounted on the circuit board of one of the drive units.

8. The dual-motor lifting device according to claim 1, characterized in that: Several uprights are provided on one side of the connecting plate, and the uprights are used to insert speakers.

9. The dual-motor lifting device according to claim 1, characterized in that: It also includes a cover plate that covers the side of the drive unit away from the connecting plate.

10. The dual-motor lifting device according to claim 1, characterized in that: It also includes a photoelectric switch and a Hall sensor. The photoelectric switch is used to monitor the position of the slider, and the Hall sensor is installed on the rotor of the motor. Both the photoelectric switch and the Hall sensor are electrically connected to the control unit.

Images