Electric lifting table

Abstract

The utility model discloses an electric lifting table, comprising a lifting table body, the lifting table body comprising a lifting column, a linear drive mechanism connected in the lifting column; a driving assembly, comprising a driving motor and a transmission rod connected to the driving motor, and the two ends of the transmission rod are respectively connected to the linear drive mechanism in the lifting column; a motor bracket connected to the lifting table body, and the driving assembly is installed on the motor bracket, the motor bracket is made of soft elastic material, so that the driving assembly is elastically connected to the lifting table body, and is used to alleviate or eliminate the assembly error between the transmission rod and the linear drive mechanism in the lifting column during installation. The electric lifting table can alleviate the abnormal sound or shaking of the lifting column caused by the assembly error of the motor bracket and the difference in the matching accuracy of the transmission rod.

Description

Technical Field

[0001] The present application relates to the technical field of furniture equipment, and specifically to an electric lifting table. Background Art

[0002] The lifting table is also called a study table or a lifting office desk. It uses the lifting characteristics to meet the healthy office needs of people of different heights to alternate between standing and sitting. Therefore, more and more office workers choose lifting tables to work. Lifting tables in related technologies generally include electric lifting tables and manual lifting tables. The former uses a motor to drive the lifting, while the latter uses a crank to drive the lifting. The electric lifting table uses a single motor to drive the lifting table, also known as a single-motor electric lifting table. Its structure generally includes a table top, a base, and two lifting columns connecting the table top and the base; the single-motor electric lifting table also includes a driving motor, which is arranged between the two lifting columns, and the driving end of the driving motor is connected to a horizontally arranged transmission rod, and the two ends of the transmission rod are respectively connected to the screw lifting mechanism in the two lifting columns; the driving motor drives the transmission rod to rotate, thereby rotating the screw lifting mechanism in the two lifting columns, so that the two lifting columns can be lifted and lowered. For example, in the lifting tables previously applied for by the applicant of this case with publication numbers CN212435466U, CN219125647U, CN213428925U, etc., the driving motor is installed on one of the lifting columns through a motor bracket; the motor bracket is a sheet metal part formed by bending, which has a connecting plate connected to the column and a mounting plate for installing the driving motor, and the connecting plate and the mounting plate are sheet metal parts bent into an L shape. During installation, the driving motor is first connected to the mounting plate of the motor bracket, and then the motor bracket with the driving motor is connected to the top of the lifting column through the connecting plate.

[0003] The electric lifting table of the above-mentioned related technology has the following defects in actual use and assembly process: First, in order to facilitate the connection between the motor bracket and the upper end of the lifting column, the connecting plate of the motor bracket and the upper end of the lifting column are clearance-matched, that is, the connecting plate of the motor bracket is placed on the top of the lifting column and fixedly connected to the upper end of the lifting column by screws; because there is an assembly gap and assembly error between the connecting plate of the motor bracket and the end face of the top of the lifting column, after the motor bracket is installed, the transmission rod of the driving end of the driving motor on the motor bracket often deviates from the preset position, so that the axis of the transmission rod and the axis of the gearbox input gear of the screw lifting mechanism in the lifting column are not in the same straight line, resulting in eccentric transmission; therefore, when the driving motor drives the transmission rod to rotate to drive the input gear of the gearbox in the lifting column to rotate, the input gear generates radial force, which compresses the gearbox, thereby causing abnormal noise or shaking of the lifting column. Furthermore, factors such as the error of the installation position of the driving motor on the motor bracket, the assembly error of the transmission rod, and the assembly accuracy of the input gear of the gearbox can all lead to eccentric transmission of the transmission rod, causing abnormal noise or shaking of the lifting column. Utility Model Content

[0004] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide an electric lifting table that can alleviate the abnormal noise or shaking of the lifting column caused by the assembly error of the motor bracket and the difference in the matching accuracy of the transmission rod.

[0005] The technical solution of the present application is to provide an electric lifting table having the following structure:

[0006] A lifting table body, the lifting table body comprising a lifting column, wherein a linear drive mechanism is connected to the lifting column;

[0007] A drive assembly, comprising a drive motor and a drive rod connected to the drive motor, and both ends of the drive rod are connected to the linear drive mechanism in the lifting column;

[0008] The motor bracket is connected to the lifting table body, and the drive assembly is installed on the motor bracket. The motor bracket is made of soft elastic material, so that the drive assembly is elastically connected to the lifting table body, which is used to alleviate or eliminate the assembly error between the transmission rod and the linear drive mechanism in the lifting column during installation.

[0009] In some embodiments, the motor bracket has a connecting portion connected to the lifting table body and a mounting portion for mounting the driving component, and the connecting portion and the mounting portion are an integral injection molding structure.

[0010] In some embodiments, the connecting portion and the mounting portion are perpendicular to each other and are arranged in an L shape.

[0011] In some embodiments, the side wall of the mounting portion is recessed inward to form a groove, and at least one convex rib extending along the height direction of the mounting portion is connected to the groove.

[0012] In some embodiments, a recessed portion communicating with the groove is provided on the connecting portion, and the convex rib extends into the recessed portion of the connecting portion.

[0013] In some embodiments, the connecting portion of the motor bracket is connected to the top of the lifting column, or the connecting portion of the motor bracket is connected to the bottom of the table top, or the connecting portion of the motor bracket is connected to the crossbeam of the electric lifting table.

[0014] In some embodiments, the top end of the lifting column is connected to a support plate, and the connecting portion is fixedly connected to the support plate.

[0015] In some embodiments, the lifting table body includes a crossbeam, and both ends of the crossbeam are respectively fixedly connected to the side walls of the support plate at the top ends of the two lifting columns.

[0016] In some embodiments, the axis of the drive motor is arranged horizontally, and the drive motor is located on a side of the table top away from the user.

[0017] In summary, compared with the related art, the electric lifting table of the present application has the following advantages: the motor bracket of the electric lifting table is made of soft elastic material, so the motor bracket itself has a certain elasticity; after the drive assembly is installed, the drive assembly is in an elastic connection state relative to the lifting table body; when the transmission rod of the drive assembly is subjected to radial force, the transmission rod has an elastic activity space relative to the lifting table body, such as elastic floating up and down or left and right or at multiple different angles; in this way, after the motor bracket is installed, even if there is an assembly error caused by the assembly gap or clearance fit between the motor bracket and the lifting table body, or a fitting error caused by the fitting accuracy of the transmission rod of the drive assembly, the transmission eccentricity of the transmission rod; but because the motor bracket itself has good elasticity, when the driving motor drives the transmission rod to rotate, the radial force on the transmission rod due to the transmission eccentricity forces the motor bracket to undergo lateral elastic deformation accordingly or adaptively, so as to achieve the effect of continuously adjusting and correcting the transmission center of the transmission rod, thereby alleviating or partially offsetting the radial force on the input gear of the linear drive mechanism in the lifting column, making the transmission smoother, thereby reducing or alleviating the noise and jitter in the transmission process of the lifting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an electric lifting table in some embodiments of the present application.

[0019] Figure 2 This is a schematic diagram of the installation of a motor bracket of an electric lifting table in some embodiments of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of a motor bracket of an electric lifting table in some embodiments of the present application.

[0021] Figure 4 It is a side schematic diagram of a motor bracket of an electric lifting table in some embodiments of the present application.

[0022] Figure 5 It is a schematic diagram of the installation of a motor bracket of an electric lifting table in other embodiments of the present application.

[0023] Figure 6 It is a schematic diagram of the installation of the motor bracket of other embodiments of the present application.

[0024] Description of reference numerals:

[0025] 1. Table top, 2. Base, 3. Lifting column, 300. Support plate, 4. Driving assembly, 400. Driving motor, 401. Transmission rod, 5. Crossbeam, 6. Motor bracket, 600. Connecting part, 601. Mounting part, 602. Groove, 603. Concave part, 604. Raised rib, 605. Fitting plane. DETAILED DESCRIPTION

[0026] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0027] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0028] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See also Figures 1 to 4 As shown, the embodiment of the present application discloses an electric lifting table, that is, a single-motor electric lifting table, whose structure includes a lifting table body, a driving assembly 4 and a motor bracket 6. The lifting table body includes a table top 1, a base 2 and a lifting column 3 connecting the table top 1 and the base 2 and used to adjust the height of the table top 1 relative to the base 2. A linear driving mechanism is connected in each lifting column 3; the linear driving mechanism is also called a screw nut pair, a linear transmission assembly, etc. The upper end of the linear driving mechanism is connected to a gear box, and the gear box has a power input end, that is, an input gear, and the center of the input gear has jack; the driving assembly 4 includes a driving motor 400 and a transmission rod 401 connected to the driving motor 400, and the two ends of the transmission rod 401 are respectively inserted into the gear box of the lifting column 3 and connected to the jack of the input gear for transmission, so as to realize the transmission connection between the transmission rod 401 and the linear drive mechanism in the lifting column 3; the axis of the driving motor 400 is arranged horizontally, and the driving motor 400 is located on the side of the table board 1 away from the user; such an arrangement can save the use space under the table board 1; the motor bracket 6 is connected to the lifting table body, and the driving assembly 4 is installed on the motor bracket 6. The driving motor 400 drives the transmission rod 401 to rotate, thereby driving the lifting column 3 to rise and fall. In the embodiment of the present application, the lifting table body and the driving assembly 4 are both electric lifting table components of the prior art, and the present application is based on this improvement, so the specific structure of the lifting table body and the driving assembly 4 of the electric lifting table is not described in detail in this embodiment.

[0031] Further in this embodiment, the motor bracket 6 for installing the driving component 4 has one end fixedly connected to the lifting table body by screws, and the motor bracket 6 is provided with a mounting hole for installing the driving component 4. It is not difficult to understand that when the motor bracket 6 is assembled or used, the driving component 4 is first installed on the motor bracket 6, and then the motor bracket 6 is connected to the lifting table body, and finally the transmission connection of the transmission rod 401 is completed; because the motor bracket 6 is assembled and has a clearance fit with the lifting table body, when the motor bracket 6 is connected to the lifting table body by screws, the degree of tightening of the screws and the installation position of the motor bracket 6 will inevitably cause the transmission rod 401 to be eccentric; other factors, such as the connection position accuracy of the driving component 4, the thickness error of the motor bracket 6, the matching accuracy of the transmission rod 401 and the input gear, and the installation technology of the installer, can affect the concentricity between the transmission rod 401 and the input gear of the gear box of the lifting column 3.

[0032] For this reason, Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, the motor bracket 6 is made of a soft elastic material, so that the drive assembly 4 is elastically connected to the lifting table body, which is used to alleviate or eliminate the assembly error between the transmission rod 401 and the gear box in the lifting column 3 during installation. In this embodiment, the soft elastic material is generally rubber, plastic and other materials, which have elasticity and good deformation ability.

[0033] Furthermore, in the embodiment of the present application, since the motor bracket 6 itself has a certain elasticity, after the drive component 4 is installed, the drive component 4 is in an elastic connection state relative to the lift table body; when the transmission rod 401 of the drive component 4 is subjected to radial force, the transmission rod 401 has an elastic activity space relative to the lift table body, such as being able to elastically float up and down or left and right or at multiple different angles; in this way, after the motor bracket 6 is installed, even if there is an assembly error between the motor bracket 6 and the lift table body due to an assembly gap or clearance fit, or due to the transmission rod 401 of the drive component 4 1 The matching error caused by the matching accuracy makes the transmission eccentricity of the transmission rod 401; however, because the motor bracket 6 itself has good elasticity, when the driving motor 400 drives the transmission rod 401 to rotate, the radial force on the transmission eccentricity of the transmission rod 401 forces the motor bracket 6 to undergo lateral elastic deformation accordingly or adaptively, so as to achieve the effect of constantly adjusting and correcting the transmission center of the transmission rod 401, thereby alleviating or partially offsetting the radial force on the input gear of the gear box of the lifting column 3, making the transmission smoother, thereby reducing or alleviating the noise and vibration during the transmission process of the lifting column 3.

[0034] In this embodiment, the motor bracket 6 has a connecting portion 600 connected to the lifting table body and a mounting portion 601 for mounting the driving component 4, and the connecting portion 600 and the mounting portion 601 are an integral injection molding structure. The overall structure of the motor bracket 6 is simple, easy to process, and has a low manufacturing cost. Further in this embodiment, the connecting portion 600 and the mounting portion 601 are perpendicular to each other and are arranged in an L shape. Figure 3 and Figure 4 As shown, the motor bracket 6 can be connected to multiple components of the lifting table body, such as Figure 2 As shown, a crossbeam 5 is provided at the bottom of the table top 1, and the two ends of the crossbeam 5 are respectively fixedly connected to the side walls of the support plate 300 at the top of the two lifting columns 3, and the connecting portion 600 of the motor bracket 6 is connected to the crossbeam 5 at the bottom of the table top 1; Figure 5 As shown, the connecting portion 600 of the motor bracket 6 is connected to the top of the lifting column 3, that is, the top of the lifting column 3 is connected to a support plate 300, and the connecting portion 600 and the support plate 300 are fixedly connected by screws. Further, the bottom of the connecting portion 600 has a fitting plane 605, and the fitting plane 605 is fitted on the top of the support plate 300, and then the two are fixedly connected by screws; Figure 6As shown, the connecting portion 600 of the motor bracket 6 is connected to the bottom of the table top 1. Therefore, the motor bracket 6 has good installation flexibility and there are many ways to connect it to the lifting table, which can be selected according to different installation requirements.

[0035] In some embodiments, in order to improve the elasticity and mechanical strength of the motor bracket 6, the side wall of the mounting portion 601 of the motor bracket 6 is recessed inward to form a groove 602, and at least one convex rib 604 extending along the height direction of the mounting portion 601 is connected to the groove 602. This not only saves materials, but also makes the motor bracket 6 have better elasticity and good mechanical strength, which meets the requirements of supporting the drive assembly 4. Furthermore, a recess 603 connected to the groove 602 is provided on the connecting portion 600, and the convex rib 604 extends into the recess 603 of the connecting portion 600, which further improves the elasticity of the motor bracket 6 and makes the overall weight of the motor bracket 6 lighter.

[0036] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0037] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An electric lifting table, characterized in that: include A lifting table body, the lifting table body comprising a lifting column, wherein a linear drive mechanism is connected to the lifting column; A drive assembly, comprising a drive motor and a drive rod connected to the drive motor, and both ends of the drive rod are connected to the linear drive mechanism in the lifting column; The motor bracket is connected to the lifting table body, and the drive assembly is installed on the motor bracket. The motor bracket is made of soft elastic material, so that the drive assembly is elastically connected to the lifting table body, which is used to alleviate or eliminate the assembly error between the transmission rod and the linear drive mechanism in the lifting column during installation.

2. The electric lifting table according to claim 1, characterized in that: The motor bracket comprises a connecting portion connected to the lifting table body and a mounting portion for mounting a driving component, and the connecting portion and the mounting portion are an integral injection molding structure.

3. The electric lifting table according to claim 2, characterized in that: The connecting portion and the mounting portion are perpendicular to each other and are arranged in an L shape.

4. The electric lifting table according to claim 2, characterized in that: The side wall of the mounting portion is inwardly recessed to form a groove, and at least one convex rib extending along the height direction of the mounting portion is connected to the groove.

5. The electric lifting table according to claim 4, characterized in that: The connecting portion is provided with a recessed portion communicating with the groove, and the convex rib extends into the recessed portion of the connecting portion.

6. The electric lifting table according to claim 1, characterized in that: The connecting part of the motor bracket is connected to the top of the lifting column, or the connecting part of the motor bracket is connected to the bottom of the table top, or the connecting part of the motor bracket is connected to the crossbeam of the electric lifting table.

7. The electric lifting table according to claim 6, characterized in that: The top end of the lifting column is connected to a support plate, and the connecting portion is fixedly connected to the support plate.

8. The electric lifting table according to claim 7, characterized in that: The lifting table body comprises a crossbeam, and two ends of the crossbeam are respectively fixedly connected to the side walls of the support plate at the top ends of the two lifting columns.

9. The electric lifting table according to claim 1, characterized in that: The axis of the driving motor is arranged horizontally, and the driving motor is located on a side of the table top away from the user.

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