CN219697446U

CN219697446U - Lifting table motor and lifting table

Info

Publication number: CN219697446U
Application number: CN202320575914.5U
Authority: CN
Inventors: 刘朱林; 陈潇冯
Original assignee: Shenzhen Yueyan Intelligent Technology Co ltd
Current assignee: Shenzhen Yueyan Intelligent Technology Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-09-15
Anticipated expiration: 2033-03-17

Abstract

The utility model provides a lifting table motor and a lifting table. The lifting table motor comprises a reduction gearbox, and a worm wheel is rotatably arranged in the reduction gearbox; a circuit board assembly is arranged in the reduction gearbox along one side of the thickness direction of the worm wheel, wherein the circuit board assembly comprises a first circuit board for controlling a motor and a second circuit board in communication connection with a key module of the hand controller; the first circuit board and the second circuit board are of an integrated structure. In the lifting table motor, the first circuit board and the second circuit board are integrated, so that the manufacturing cost of the lifting table can be effectively reduced, and the assembly efficiency is improved.

Description

Lifting table motor and lifting table

Technical Field

The utility model relates to the technical field of lifting tables, in particular to a lifting table motor and a lifting table.

Background

The electric lifting table comprises a motor and a lifting device, wherein the lifting device is driven by the motor to control the lifting device to stretch out and draw back, so that the lifting of the table top is realized.

The electric lifting table comprises a first circuit board for controlling the motor and a second circuit board for transmitting signals on the hand controller. When the height of the lifting table needs to be adjusted, a control signal sent by the hand controller is transmitted to the first circuit board through the second circuit board by controlling a key of the hand controller, so that the operation of the motor is controlled, the lifting device stretches out and draws back under the driving of the motor, and then the lifting of the table top is adjusted.

In current lift table, first circuit board installs in the inside of motor, and the second circuit board sets up in the outside of motor, and both separately processing need link to each other through communication line moreover, have the problem that processing cost is high and the equipment is troublesome.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a lifting table motor and a lifting table, which are used for solving the problems in the prior art.

In order to solve the above problems, a first aspect of the embodiments of the present utility model provides a lifting table motor, which includes a reduction gearbox, wherein a worm wheel is rotatably disposed in the reduction gearbox;

a circuit board assembly is arranged in the reduction gearbox along one side of the thickness direction of the worm wheel, wherein the circuit board assembly comprises a first circuit board for controlling a motor and a second circuit board in communication connection with a key module of the hand controller;

the first circuit board and the second circuit board are of an integrated structure.

As a further improvement of the technical scheme, a magnetic ring is fixedly arranged on one side, close to the circuit board assembly, of the worm wheel, and the magnetic ring is coaxial with the worm wheel;

the first circuit board is provided with a detection device which is used for detecting the rotation state of the magnetic ring.

As a further improvement of the above technical solution, the detecting device includes a first hall sensor and a second hall sensor.

As a further improvement of the above technical solution, in the direction of the rotation axis of the worm wheel, the hall elements of the first hall sensor and the second hall sensor are both facing the magnetic ring;

the distance between the first Hall sensor and the second Hall sensor is smaller than the outer diameter of the magnetic ring.

As a further improvement of the technical scheme, the side face of the worm wheel is provided with an annular groove, and the magnetic ring is embedded in the annular groove.

As a further improvement of the technical scheme, a non-magnetic oil-proof plate is arranged between the circuit board assembly and the worm wheel and used for shielding oil.

As a further improvement of the technical scheme, the bottom of the oil-proof plate is provided with a bottom plate;

the circuit board assembly further includes a socket for connecting a circuit, wherein the base plate is located between the worm gear and the socket.

As a further improvement of the above technical solution, the bottom plate and the oil-proof plate are perpendicular to each other.

As a further improvement of the technical scheme, the oil-proof plate and the bottom plate are of an integrated structure.

A second aspect of an embodiment of the utility model provides a lifting table comprising a lifting table motor as described above.

The beneficial effects of the utility model include:

the lifting table motor comprises a reduction gearbox, and a worm wheel is rotatably arranged in the reduction gearbox. In the reduction gearbox, a circuit board assembly is provided on one side in the thickness direction of the worm wheel, thereby fully utilizing the space inside the reduction gearbox.

The circuit board assembly comprises a first circuit board for controlling the motor and a second circuit board in communication connection with the key module of the hand controller, wherein the first circuit board and the second circuit board are of an integrated structure.

Since the first circuit board and the second circuit board are of an integrated structure, the manufacturing cost of the circuit board assembly can be reduced. In addition, in the process of assembling the lifting table, the first circuit board and the second circuit board are not required to be separately installed and then connected through a communication line, so that the assembling efficiency is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic view of a lift table motor;

FIG. 2 is a schematic view of the lift table motor of FIG. 1 with the cover removed;

FIG. 3 shows a front view of FIG. 2;

fig. 4 is a view showing a positional relationship among a magnetic ring, a first hall element, and a second hall element in a reduction gearbox;

FIG. 5 is a schematic view of the circuit board assembly of FIG. 2 with the oil resistant plate and magnetic ring removed;

FIG. 6 shows a schematic view of an oil resistant plate;

FIG. 7 illustrates a first isometric view of a circuit board assembly;

fig. 8 shows a second side view of a circuit board assembly.

Description of main reference numerals:

1-a reduction gearbox; 2-worm wheel; 3-a motor body; 4-a circuit board assembly; 5-a magnetic ring; 6-a first hall element; 7-a second hall element; 8-an annular groove; 9-an oil-resistant plate; 10-a bottom plate; 11-a socket; 12-a first connection post; 13-a second connection post; 14-side recess; 15-mounting through holes; 16-bump structure; 17-a first connection via; 18-a second connection via; 19-a first boss; 20-a second boss; 21-cover plate.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Examples

Referring to fig. 1, 2 and 3, in the present embodiment, a lifting table motor is provided, which includes a reduction gearbox 1, and a worm wheel 2 is rotatably disposed in the reduction gearbox 1.

A worm is further arranged in the reduction gearbox 1, the worm wheel 2 is meshed with the worm, and the worm is synchronously and rotatably connected with a motor output shaft in the motor main body 3. In order to realize synchronous rotation connection between the worm and the motor output shaft, the worm and the motor output shaft can be connected through a coupler, or both adopt an integrated structure. It is noted that neither the worm nor the motor output shaft is shown in the figures.

Inside the reduction gearbox 1, a circuit board assembly 4 is arranged on one side in the thickness direction of the worm wheel 2, wherein the circuit board assembly 4 comprises a first circuit board for controlling a motor and a second circuit board in communication connection with a key module of the hand controller.

The control circuit of the first circuit board is connected with the coil in the motor main body 3, wherein the control signal sent by the first circuit board is transmitted to the motor main body 3 through the control circuit, and therefore the control of the rotation state of the motor output shaft is achieved.

An interface can be arranged on the second circuit board and is in communication connection with the key module of the hand controller through a signal wire. Or the second circuit board can also be in communication connection with the key module of the hand controller in a wireless connection mode, for example, wireless communication connection is realized through a Bluetooth module and the like.

In the existing lifting table, the first circuit board and the second circuit board are of two independent split structures, and are required to be processed and manufactured separately, so that in order to achieve communication connection between the two, the first circuit board and the second circuit board are required to be provided with connectors for connecting each other, and the lifting table is high in manufacturing cost and troublesome to assemble.

In this embodiment, the first circuit board and the second circuit board adopt an integral structure, so that the first circuit board and the second circuit board can be manufactured and molded together, and the manufacturing efficiency is improved while the manufacturing cost is reduced. It should be noted that, because the first circuit board and the second circuit board are of an integral structure, there is no specific positional relationship between the first circuit board and the second circuit board on the circuit board assembly 4.

The first circuit board and the second circuit board are of an integrated structure, and can be directly connected in a communication way through the built-in circuit, so that a connector is omitted, and the manufacturing cost and the assembly complexity are reduced.

In order to realize detection of the rotation state of the worm wheel 2, in this embodiment, a magnetic ring 5 is fixedly installed on one side of the worm wheel 2, which is close to the circuit board assembly 4, the magnetic ring 5 is coaxial with the worm wheel 2, and a detection device is arranged on the first circuit board, wherein the detection device is used for detecting the rotation state of the magnetic ring 5. Since the magnetic ring 5 is fixedly arranged on the worm wheel 2, the rotation direction and the rotation number of the worm wheel 2 are the same as those of the magnetic ring 5, and thus the rotation state of the worm wheel 2 can be known by detecting the magnetic ring 5.

The detection device comprises a first Hall sensor and a second Hall sensor, wherein the first Hall sensor and the second Hall sensor are integrated on the first circuit board. In the present embodiment, for convenience of description, the hall element of the first hall sensor is referred to as a first hall element 6, and the hall element of the second hall sensor is referred to as a second hall element 7.

In the direction of the rotation axis of the worm wheel 2, both the first hall element 6 and the second hall element 7 are facing the magnetic ring 5. Specifically, referring to fig. 4, the parts such as the circuit board assembly 4 are removed, and the first hall element 6, the second hall element 7, the worm wheel 2 and the magnetic ring 5 are remained, wherein the first hall element 6, the second hall element 7, the worm wheel 2 and the magnetic ring 5 are projected along the rotation axis direction of the worm wheel 2, and as can be seen in the figure, the projections of the first hall element 6 and the second hall element 7 all fall on the projection of the magnetic ring 5. The arrangement of the positions enables the first Hall element 6 and the second Hall element 7 to be closer to the magnetic ring 5, so that the sensitivity and the accuracy of detection are improved.

Further, the distance between the first hall element 6 and the second hall element 7 is smaller than the outer diameter of the magnetic ring 5.

In fig. 4, the upper half of the magnetic ring 5 is N-pole, and the lower half is S-pole. Along with the rotation of the worm wheel 2, the magnetic ring 5 rotates synchronously therewith, and in the process of the rotation of the magnetic ring 5, the peripheral magnetic field changes correspondingly, so that the change of the magnetic field can be detected through the first Hall element 6 of the first Hall sensor and the second Hall element 7 of the second Hall sensor, and the rotation states of the magnetic ring 5 and the worm wheel 2 can be known.

In this embodiment, the detection device includes the first hall sensor and the second hall sensor, and the data detected by both the first hall sensor and the second hall sensor can be compared and calibrated with each other, thereby reducing errors and improving the accuracy of detection. In addition, if one of the first hall sensor and the second hall sensor fails, the other can still work normally, thereby improving the reliability of the detection device.

In the existing lifting table motor, the magnetic ring 5 is mounted on the worm or motor output shaft. Since the diameters of the worm and the motor output shaft are small, and a specific position is required to be arranged on the motor for installing the Hall element, the manufacturing and installing costs are high.

In the embodiment, the magnetic ring 5 is arranged on the worm wheel 2 with a larger diameter, so that the installation is more convenient. The first hall sensor and the second hall sensor of the detection device are directly arranged on the circuit board assembly 4, so that the internal space of the reduction gearbox 1 is fully utilized, and the manufacturing and mounting cost is effectively reduced.

As shown in fig. 5, in order to mount the magnetic ring 5, the side face of the worm wheel 2 is provided with an annular groove 8, the annular groove 8 being coaxial with the worm wheel 2, wherein the magnetic ring 5 is embedded in the annular groove 8. The magnetic ring 5 and the annular groove 8 can be fixedly connected through interference fit or adhesion and the like.

For lubrication, heat dissipation, wear reduction, etc., the surfaces of the worm wheel 2 and the worm may be adhered with a certain amount of lubricating oil. During the rotation of the worm wheel 2, the lubricating oil is inevitably splashed toward the circuit board assembly 4 under the action of centrifugal force. If the lubricant is sprayed onto the circuit board assembly 4, it may adversely affect the electronic components of the circuit board assembly 4.

As shown in fig. 2 and 3, in order to avoid adhesion of oil on the circuit board assembly 4, a non-magnetic oil-proof plate 9 is disposed between the circuit board assembly 4 and the worm wheel 2, and the oil-proof plate 9 is used for shielding oil. The oil-repellent plate 9 may be made of a material that is not magnetized, such as plastic, thereby avoiding an influence on the detection of the first hall element 6 and the second hall element 7.

As shown in fig. 6, the bottom of the oil-repellent plate 9 is provided with a bottom plate 10. As shown in fig. 7 and 8, the circuit board assembly 4 further includes a socket 11 for connecting wires. Wherein, the bottom plate 10 is located between worm wheel 2 and socket 11, and bottom plate 10 can prevent oil from sputtering to socket 11.

The socket 11 may have a plurality of interfaces for connecting a power line and a signal line of the hand controller key module, respectively. The user controls the button module of hand controller, and button module transmits the signal to the second circuit board, and the first circuit board is given in the transmission of second circuit board again, and first circuit board generates control signal, realizes the control to motor output shaft rotation state from this, and motor output shaft gives worm and worm wheel 2 with power transmission, and worm wheel 2 drives elevating gear motion, realizes the regulation to the elevating desk height from this.

In this embodiment, the bottom plate 10 and the oil-repellent plate 9 are perpendicular to each other. In order to reduce the cost of manufacture and assembly, the oil resistant plate 9 and the bottom plate 10 may be of unitary construction.

As shown in fig. 5 and 6, a first cylindrical connecting column 12 and a second cylindrical connecting column 13 are arranged in the reduction gearbox 1, and a side concave portion 14 and a mounting through hole 15 are arranged on the oil-proof plate 9, wherein the side concave portion 14 is arc-shaped and is used for enabling the first connecting column 12 to be embedded into and mutually abutted against the side concave portion; the mounting through hole 15 is for the second connection post 13 to be inserted therein and can be interference fit therewith. By the mutual cooperation of the first connecting post 12, the second connecting post 13, the side recess 14 and the mounting through hole 15, the positioning of the oil-repellent plate 9 in the reduction gearbox 1 is achieved, wherein the oil-repellent plate 9 is not in contact with the worm wheel 2.

As shown in fig. 5, a protrusion structure 16 for supporting the oil resistant plate 9 may be provided in the reduction gearbox 1, and the protrusion structure 16 may limit the installation depth of the oil resistant plate 9 in the reduction gearbox 1, thereby preventing the oil resistant plate 9 from contacting the worm wheel 2.

As shown in fig. 7, the circuit board assembly 4 is provided with a first connection hole 17 and a second connection hole 18, and the first connection hole 17 and the second connection hole 18 correspond to the first connection post 12 and the second connection post 13, respectively.

In the assembly, the oil-repellent plate 9 is mounted first, and then the circuit board assembly 4 is mounted. In order to provide a space between the circuit board assembly 4 and the oil-repellent plate 9, the following may be made:

the top surfaces of the first connection post 12 and the second connection post 13 are flush, the top surface of the first connection post 12 is provided with a cylindrical first boss 19, the top surface of the second connection post 13 is provided with a cylindrical second boss 20, wherein the first boss 19 is coaxial with the first connection post 12, and the second boss 20 is coaxial with the second connection post 13. The outer diameter of the first boss 19 and the inner diameter of the first connection hole 17 are smaller than the first connection post 12, and the outer diameter of the second boss 20 and the inner diameter of the second connection hole 18 are smaller than the second connection post 13.

When the circuit board assembly 4 is mounted, the first boss 19 is inserted through the first connection hole 17, and the second boss 20 is inserted through the second connection hole 18. The circuit board assembly 4 is positioned without contacting the oil-proof plate 9, supported by the top surfaces of both the first and second connection posts 12 and 13. Screw holes may be provided on both the first boss 19 and the second boss 20, wherein the fixation of the circuit board assembly 4 may be achieved by screws.

As shown in fig. 1, after the installation of the respective constituent elements inside the reduction gearbox 1 is completed, a cover plate 21 may be covered on the reduction gearbox 1, wherein the cover plate 21 may be fixed by screws.

In this embodiment, there is also proposed a lifting table including the lifting table motor mentioned above.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The lifting table motor is characterized by comprising a reduction gearbox, wherein a worm wheel is rotatably arranged in the reduction gearbox;

2. The lifting table motor according to claim 1, wherein a magnetic ring is fixedly installed on one side of the worm wheel, which is close to the circuit board assembly, and the magnetic ring is coaxial with the worm wheel;

3. The lift table motor of claim 2, wherein the detection device includes a first hall sensor and a second hall sensor.

4. A lifting table motor as recited in claim 3, wherein the first hall sensor includes a first hall element and the second hall sensor includes a second hall element in a direction along the axis of rotation of the worm gear, the first hall element and the second hall element both being oriented toward the magnetic ring;

wherein, the distance between the first hall element and the second hall element is less than the external diameter of the magnetic ring.

5. The elevating table motor as set forth in claim 2, wherein the side surface of the worm wheel is provided with an annular groove, and the magnetic ring is embedded in the annular groove.

6. The lift table motor of claim 1, wherein a non-magnetically conductive oil-resistant plate is disposed between the circuit board assembly and the worm gear, the oil-resistant plate being configured to shield oil.

7. The elevating table motor as set forth in claim 6, wherein the bottom of said oil-proof plate is provided with a bottom plate;

8. The lift table motor of claim 7, wherein the base plate is perpendicular to the oil shield.

9. The lift table motor of claim 7, wherein the oil resistant plate is of unitary construction with the base plate.

10. A lifting table comprising a lifting table motor as claimed in any one of claims 1 to 9.