Cross beam connecting structure and double-station lifting table

Abstract

The utility model discloses a cross beam connecting structure and a double-station lifting table, the cross beam connecting structure comprises a first connecting frame connected to a lifting stand column and a second connecting frame connected to the end part of a cross beam, and the first connecting frame or the second connecting frame is provided with a first inclined surface inclined towards the direction close to the lifting stand column; the second connecting frame or the first connecting frame is provided with an abutting part abutting against the first inclined face. The first connecting frame and the second connecting frame are connected through a fastener and used for enabling the abutting part to apply extrusion force to the first inclined face so that the lifting stand column and the end of the cross beam can be tightly pressed. The connecting structure between the cross beam and the lifting stand column of the double-station lifting table adopts the cross beam connecting structure, and the cross beam connecting structure enables the assembly of the cross beam to be simple, convenient, labor-saving and high in assembly speed, and enables the connection between the cross beam and the lifting stand column to be firmer.

Description

Technical Field

[0001] The present application relates to the technical field of office furniture, and in particular to a beam connection structure and a double-station lift table. Background Art

[0002] A dual-station height-adjustable desk is a desk with two working areas, with both the front and back sides available for users to use. It is commonly used in offices, studios, laboratories and other places. It has a lifting function, and users can freely adjust the height of the desk according to their height and work needs.

[0003] In the related art, a double-station lifting table has two stations. To ensure the stability of the support, the table frame is generally larger and heavier. For example, the double-station lifting table disclosed in the Chinese patent application with the announcement number CN220694669U includes two lifting frames, each of which includes two lifting legs and a top bracket connecting the tops of the two lifting legs. A crossbeam is connected between the two lifting legs of the two lifting frames, and the crossbeam is connected to the lifting column through a connecting structure. Specifically, a fixing plate is fixedly connected to the lifting column, and the fixing plate is threadedly connected to the limiting column. A mounting plate is connected to the end of the crossbeam, and the mounting plate is provided with a through hole for the limiting column to be inserted into. In order to make the crossbeam connection more secure, a boss with an inclined surface is provided on the mounting plate. When the through hole of the mounting plate at the end of the crossbeam is inserted into the limiting column, the inclined surface of the boss presses against the column head of the limiting column, thereby firmly connecting the crossbeam to the lifting column.

[0004] The crossbeam of the double-station lifting table of the above-mentioned related art has some shortcomings in the actual assembly process: the axis of the limit column threadedly connected to the fixing plate on the surface of the lifting column is parallel to the length direction of the crossbeam. When the through hole on the mounting plate of the crossbeam is connected to the limit column, the limit column is located inside the crossbeam. When the crossbeam is installed, if the extension length of the limit column is short, it is difficult to connect the mounting plate of the crossbeam to the limit column; in order to quickly complete the assembly of the crossbeam, the limit column is generally loosened first to make the limit column extend a longer length. After the mounting plate of the crossbeam is connected to the limit column, the limit column is then tightened with a tool. However, due to the low height of the space below the crossbeam and the narrow operating space inside the crossbeam, tightening the limit column with a tool is troublesome and very laborious, resulting in a slow installation speed of the crossbeam. Utility Model Content

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide a beam connection structure that makes the assembly of the beam simple and convenient, saves labor and has a fast assembly speed.

[0006] The technical solution of the present application is to provide a beam connection structure having the following structure: comprising a first connecting frame connected to a lifting column and a second connecting frame connected to an end portion of the beam, wherein the first connecting frame or the second connecting frame is provided with a first inclined surface inclined toward the lifting column, and the second connecting frame or the first connecting frame is provided with a supporting portion abutting against the first inclined surface; the first connecting frame and the second connecting frame are connected by a fastener, so that the supporting portion applies a squeezing force to the first inclined surface to press the lifting column and the end portion of the beam tightly.

[0007] In some embodiments, the first connecting frame is provided with the first inclined surface at the top, and the second connecting frame is provided with the abutting portion at the lower end; the fastener passes through the crossbeam from top to bottom and is connected to the first connecting frame;

[0008] Or the abutting portion is provided on the top of the first connecting frame, and the first inclined surface is provided on the bottom of the second connecting frame; the fastener passes through the crossbeam from top to bottom and is connected to the first connecting frame.

[0009] In some embodiments, the abutting portion is configured as a second inclined surface that is slidably fitted with the first inclined surface.

[0010] In some embodiments, a mounting plate is provided on the top of the first connecting frame, and a mounting hole is provided on the mounting plate. The fastener passes through the beam and is threadedly connected to the mounting hole.

[0011] In some embodiments, there are two first inclined surfaces, and the two first inclined surfaces are respectively located on both sides of the mounting plate; the abutting portion of the second connecting frame is configured as two second inclined surfaces.

[0012] In some embodiments, a stop surface is provided on the top of the second inclined surface for abutting against the top of the first connecting frame to limit the position.

[0013] In some embodiments, the crossbeam is a hollow tube, and the bottom of the end of the crossbeam is configured as an open portion that is connected to the interior of the crossbeam and for the first connecting frame to be inserted into.

[0014] In some embodiments, the second connecting frame is provided with a stop plate that is bent downward and connected to the inner wall of the beam at one end away from the end of the beam; after the beam is connected to the lifting column, the stop plate is located on the outside of the first connecting frame.

[0015] In some embodiments, a hook is provided on the stop plate, and an insertion opening of the hook passes through the bottom wall of the stop plate.

[0016] In summary, compared with the related art, the crossbeam connection structure of the present application has the following advantages: when the crossbeam is connected, the crossbeam connection structure clamps the end of the crossbeam on the first connecting frame from top to bottom, and makes the abutment portion of the second connecting frame in the crossbeam abut against the first inclined surface on the first connecting frame, or makes the first inclined surface of the second connecting frame in the crossbeam abut against the abutment portion on the first connecting frame; then the first connecting frame and the second connecting frame are fastened together by the fastener; because the first inclined surface on the first connecting frame or the second connecting frame is inclined in the direction close to the lifting column when the fastener is connected, the abutment portion exerts an extrusion force on the first inclined surface, and under this extrusion force, the lifting column will move in the direction close to the end of the crossbeam until the lifting column and the end of the crossbeam are pressed tightly. As the pre-tightening force of the fastener increases, the connection between the lifting column and the crossbeam becomes tighter and tighter, thereby making the connection between the crossbeam and the first connecting frame more firm and stable. Furthermore, users only need to use tools to install fasteners on the outside of the beam, avoiding the need to use tools to install fasteners under the beam and in the narrow space inside the beam, thereby making the assembly of the beam simple, convenient, labor-saving and fast.

[0017] Another technical solution of the present application is to provide a double-station lifting table with the following structure, including two lifting frames, each lifting frame including two lifting columns, a crossbeam connecting the lifting columns of the two lifting frames, and the connection structure between the crossbeam and the lifting columns adopts the crossbeam connection structure described in any of the above embodiments.

[0018] The connection structure between the crossbeam and the lifting column of the double-station lifting table adopts the crossbeam connection structure of any of the above-mentioned embodiments, so that the crossbeam can be installed from top to bottom. During installation, it is only necessary to use tools to install fasteners on the outside of the crossbeam, avoiding the use of tools to install fasteners under the crossbeam and in the narrow space inside the crossbeam. Therefore, the assembly of the crossbeam is simple, convenient, labor-saving and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a beam connection structure according to some embodiments of the present application.

[0020] Figure 2 This is a schematic structural diagram from another angle of a beam connection structure according to some embodiments of the present application.

[0021] Figure 3 This is a schematic cross-sectional structural diagram of a beam connection structure according to some embodiments of the present application.

[0022] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A in .

[0023] Figure 5It is a schematic diagram of the installation structure of the beam and the lifting column according to some embodiments of the present application.

[0024] Figure 6 This is a schematic diagram of another angle installation structure of the beam and the lifting column according to some embodiments of the present application.

[0025] Figure 7 This is a structural schematic diagram of a second connecting frame of a beam connecting structure according to some embodiments of the present application.

[0026] Description of reference numerals:

[0027] 1. Lifting column, 2. Beam, 200. Second connecting frame, 201. Second inclined surface, 202. Stop plate, 203. Hook, 204. Opening, 3. Fastener, 4. First connecting frame, 400. Mounting plate, 401. First inclined surface, 402. Mounting hole. DETAILED DESCRIPTION

[0028] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "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," and "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.

[0031] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See also Figures 1 to 7As shown; the embodiment of the present application discloses a crossbeam connection structure, that is, a connection structure between a crossbeam and a lifting column. This crossbeam connection structure installs a crossbeam 2 between two lifting columns 1, thereby maintaining a fixed position and allowing the two lifting columns 1 to rise and fall synchronously. In this embodiment, the lifting columns 1 and the crossbeam 2 are both metal pipes. The crossbeam connection structure includes a first connecting frame 4 connected to the outer wall of the lifting column 1 and a second connecting frame 200 connected to the end of the crossbeam 2. The first connecting frame 4 is a metal component that is generally welded to the outer wall of the outer tube of the lifting column 1 to support and install the crossbeam 2. The second connecting frame 200 is also a metal component that is generally welded to the inner end of the crossbeam 2.

[0033] Specifically in this embodiment, the top of the first connecting frame 4 is provided with a horizontally arranged mounting plate 400, and the mounting plate 400 is provided with a mounting hole 402; the top of the first connecting frame 4 is provided with a first inclined surface 401 inclined toward the direction of the lifting column 1; Figure 3 and Figure 4 As shown, a notch is provided at the top of the first connecting frame 4 on the side closest to the lifting column 1. The distance between the upper end of the notch and the lifting column 1 is greater than the distance between the lower end of the notch and the lifting column 1, and the inner wall of the notch forms the first inclined surface 401. The lower end of the second connecting frame 200 is provided with an abutment portion that abuts against the first inclined surface 401. The top of the crossbeam 2 is connected to a fastener 3 that mates with the mounting hole 402. When the fastener 3 is connected to the mounting hole 402, the abutment portion of the second connecting frame 200 applies a compressive force to the first inclined surface 401, forcing the lifting column 1 and the end of the crossbeam 2 to fit tightly.

[0034] In the above-mentioned crossbeam connection structure, since the first inclined surface 401 on the first connecting frame 4 is inclined toward the lifting column 1, when the fastener 3 is connected, the abutting portion of the second connecting frame 200 applies a squeezing force to the first inclined surface 401. Under this squeezing force, the lifting column 1 moves toward the end of the crossbeam 2 until the lifting column 1 and the end of the crossbeam 2 are pressed together. As the preload force of the fastener 3 increases, the connection between the lifting column 1 and the crossbeam 2 becomes increasingly tight, thereby making the connection between the crossbeam 2 and the first connecting frame 4 more secure and stable. Furthermore, the fastener 3 is installed at the top of the crossbeam 2. The user only needs to use tools on the outside of the crossbeam 2 to install the fastener 3, avoiding the need to use tools to install the fastener 3 under the crossbeam 2 or in the narrow space inside the crossbeam 2. This makes the assembly of the crossbeam 2 simple, convenient, labor-saving, and fast.

[0035] It is easy to understand that, since the first inclined surface 401 on the first connecting frame 4 is inclined toward the lifting column 1, under the pre-tightening pressure of the fastener 3, the abutting portion of the second connecting frame 200 at the end of the beam 2 squeezes the first inclined surface 401 and forces the lifting column 1 to move relative to the beam 2, so that the two are pressed tightly; therefore, the abutting portion at the lower end of the second connecting frame 200 can be an outwardly convex block, an arc-shaped convex portion, etc., and in this embodiment, see Figure 4 As shown, the abutting portion is configured as a second inclined surface 201 that slides in contact with the first inclined surface 401. Under the pre-tightening pressure of the fastener 3, the second inclined surface 201 of the second connecting frame 200 presses the first inclined surface 401 of the first connecting frame 4. Under the pressing action of the two inclined surfaces, the connection between the second connecting frame 200 and the first connecting frame 4 can become tighter and more secure.

[0036] For example, see Figure 4 、 Figure 5 and Figure 6 As shown, the first connecting frame 4 is formed by bending a metal sheet. The mounting plate 400 of the first connecting frame 4 is bent horizontally and positioned on top of the first connecting frame 4. First inclined surfaces 401 are provided on the top of the first connecting frame 4 on either side of the mounting plate 400, with the vertical projections of the two first inclined surfaces 401 located on either side of the vertical projection of the mounting plate 400. The crossbeam 2 is a hollow pipe, and the bottom of the end of the crossbeam 2 is provided with an opening 204 that communicates with the interior of the crossbeam 2 and allows the first connecting frame 4 to be inserted. The second connecting frame 200 is fixedly connected to the end of the crossbeam 2. The second connecting frame 200 is provided with downwardly extending abutment portions on both sides, each of which has a second inclined surface 201. When the crossbeam 2 is connected to the first connecting frame 4 through the opening 204, the two second inclined surfaces 201 of the abutment portions of the second connecting frame 200 press and fit tightly against the two first inclined surfaces 401 on the first connecting frame 4.

[0037] In the above embodiment, the mounting holes 402 on the mounting plate 400 of the first connecting frame 4 are threaded holes, and the fasteners 3 are screws that threadably engage the threaded holes. Tightening the screws causes the second connecting frame 200 at the end of the crossbeam 2 to press downward against the first connecting frame 4, with the abutment at the lower end of the second connecting frame 200 exerting a compressive force on the first inclined surface 401 of the first connecting frame 4. In other embodiments, the mounting plate 400 may also be a riveted hole, and the fasteners 3 may be rivets or pins.

[0038] In some embodiments, the second connecting frame may be provided with a first inclined surface inclined toward the lifting column, and the first connecting frame may be provided with a supporting portion that abuts against the first inclined surface, and the supporting portion is a second inclined surface that slides in contact with the first inclined surface; similarly, under the locking action of the fastener, the connection between the second connecting frame and the first connecting frame becomes tighter and stronger, and the lifting column and the end of the beam are more closely fitted.

[0039] It is understandable that the outer tube of the lifting column 1 and the crossbeam 2 are both made of metal pipes. If the extrusion force between the end of the crossbeam 2 and the outer tube of the lifting column 1 is too large, the outer tube of the lifting column 1 will inevitably be deformed, thereby affecting the lifting operation of the lifting column 1. In this embodiment, in order to avoid the outer tube of the lifting column 1 from being deformed due to extrusion, see Figure 4 and Figure 7 As shown, a stop surface is provided at the top of the second inclined surface 201 to abut against the top of the first connecting frame 4. The setting of the stop surface can prevent the surface of the lifting column 1 from excessively squeezing the end surface of the crossbeam 2, thereby avoiding deformation of the surface of the lifting column 1 due to squeezing.

[0040] Further in this embodiment, Figure 7 As shown, the end of the second connecting frame 200 away from the end of the crossbeam 2 is provided with a downwardly bent stop plate 202 connected to the inner wall of the crossbeam 2. After the crossbeam 2 is connected to the lifting column 1, the stop plate 202 is located outside the first connecting frame 4. The cooperation between the stop plate 202 and the outer wall of the first connecting frame 4 also prevents the lifting column 1 from excessively squeezing the end of the crossbeam 2.

[0041] In the above embodiment, the stop plate 202 is provided with a hook 203, and the insertion opening of the hook 203 passes through the bottom wall of the stop plate 202. The provision of the hook 203 can facilitate users to hang items and improve the storage capacity.

[0042] Another embodiment of the present application discloses a dual-station lift table comprising two lift frames, each of which comprises two lift columns 1. A crossbeam 2 is connected between the lift columns 1 of the two lift frames, and the connection structure between the crossbeam 2 and the lift columns 1 adopts the crossbeam connection structure described in any of the above embodiments. The dual-station lift table allows the crossbeam 2 to be installed from top to bottom, and during installation, only the fasteners 3 need to be installed using tools on the outside of the crossbeam 2, avoiding the need to use tools to install the fasteners 3 under the crossbeam 2 or in the narrow space inside the crossbeam 2. This makes assembly of the crossbeam 2 simple, convenient, labor-saving, and fast.

[0043] 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 accompanying 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.

[0044] 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" 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 can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0045] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A beam connection structure, characterized in that: The invention comprises a first connecting frame connected to the lifting column and a second connecting frame connected to the end of the crossbeam, wherein the first connecting frame or the second connecting frame is provided with a first inclined surface inclined toward the lifting column, and the second connecting frame or the first connecting frame is provided with a supporting portion abutting against the first inclined surface; the first connecting frame and the second connecting frame are connected by a fastener, so that the supporting portion applies a squeezing force to the first inclined surface to press the lifting column and the end of the crossbeam tightly.

2. The beam connection structure according to claim 1, characterized in that: The first connecting frame is provided with the first inclined surface at the top, and the second connecting frame is provided with the abutting portion at the lower end; the fastener passes through the crossbeam from top to bottom and is connected to the first connecting frame; Or the abutting portion is provided on the top of the first connecting frame, and the first inclined surface is provided on the bottom of the second connecting frame; the fastener passes through the crossbeam from top to bottom and is connected to the first connecting frame.

3. The beam connection structure according to claim 1 or 2, characterized in that: The abutting portion is configured as a second inclined surface that is matched with and slidably fits the first inclined surface.

4. The beam connection structure according to claim 3, characterized in that: A mounting plate is provided on the top of the first connecting frame, and a mounting hole is provided on the mounting plate. The fastener passes through the crossbeam and is threadedly connected to the mounting hole.

5. The beam connection structure according to claim 4, characterized in that: There are two first inclined surfaces, and the two first inclined surfaces are respectively located on both sides of the mounting plate; the abutting portion of the second connecting frame is configured as the two second inclined surfaces.

6. The beam connection structure according to claim 2, characterized in that: The top of the second inclined surface is provided with a stop surface which abuts against the top of the first connecting frame to limit position.

7. The beam connection structure according to claim 1, characterized in that: The crossbeam is a hollow pipe, and the bottom of the end of the crossbeam is configured as an open portion that is communicated with the interior of the crossbeam and for the first connecting frame to be inserted into.

8. The beam connection structure according to claim 7, characterized in that: The second connecting frame is provided with a stop plate which is bent downward and connected to the inner wall of the beam at one end away from the end of the beam; after the beam is connected to the lifting column, the stop plate is located on the outer side of the first connecting frame.

9. The beam connection structure according to claim 8, characterized in that: The stop plate is provided with a hook, and an insertion opening of the hook passes through the bottom wall of the stop plate.

10. A double-station lifting table, comprising two lifting frames, each of which comprises two lifting columns, and a crossbeam connecting the lifting columns of the two lifting frames, characterized in that: The connection structure between the crossbeam and the lifting column adopts the crossbeam connection structure described in any one of claims 1 to 9 above.

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