A robustly connected electric lift table

Abstract

A kind of electric lifting table of firm connection, it is by table top, table leg frame, screw rod transmission device installed in table leg frame composition;Screw rod transmission device includes screw rod, with the inner thread sleeve rod of screw rod thread connection and the motor for driving screw rod rotation;The inner thread sleeve rod one end is thread-connected with screw rod, and the other end of inner thread sleeve rod passes out table leg frame and is connected by gasket and bolt;The utility model discloses because inner thread sleeve rod is clamped on outer sleeve pipe, and further is locked by bolt on the outside of outer sleeve pipe, solves the traditional inner thread sleeve rod and is directly locked on the wall of outer sleeve pipe, and inner thread sleeve rod is driven to rotate while influencing the connection loosening situation of outer sleeve pipe.

Description

Technical Field

[0001] This utility model belongs to the field of height-adjustable desk technology, specifically relating to a reliably connected electric height-adjustable desk. Background Technology

[0002] A height-adjustable desk is a type of desk whose desktop height can be adjusted. It typically consists of telescopic legs, a tabletop, a side frame, and a controller.

[0003] Currently, most telescopic table legs are driven by gears or lead screws. In the lead screw transmission process, the lead screw moves up and down within the internal threaded sleeve. During this up and down movement, the internal threaded sleeve rotates along with the lead screw. Since the internal threaded sleeve is fastened to other components by screws, the large rotation of the lead screw forces the fastening of the internal threaded sleeve to loosen, thus causing the lead screw to spin freely within the internal thread.

[0004] In view of this, this case arises. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an electric lifting table that rotates smoothly and has a reliable connection.

[0006] This utility model is achieved through the following technical solution: A reliably connected electric height-adjustable table is composed of a tabletop, table legs, and a screw drive device installed inside the table legs; the screw drive device includes a screw, an internally threaded sleeve connected to the screw, and a motor for driving the screw to rotate; characterized in that one end of the internally threaded sleeve is threaded to the screw, and the other end of the internally threaded sleeve passes through an outlet hole provided on the table legs and is connected to a bolt by a washer.

[0007] The table leg frame includes an inner sleeve and an outer sleeve that fit together and move up and down. The outer sleeve is fixed to the base plate and provides support on the ground.

[0008] The outer tube is a hollow tube, with one end closed and the other end open; and an outlet hole is provided on its closed end face.

[0009] The inner wall of the internal threaded sleeve is provided with an internal thread for connecting the lead screw. A protruding connecting block is provided on the closed end face of the internal threaded sleeve. The size of the protruding connecting block is adapted to the size of the outlet hole. The protruding connecting block can be inserted into the outlet hole, and the protruding connecting block is provided with a threaded hole.

[0010] After the internal threaded sleeve is installed into the outer sleeve, the protruding connecting block on the internal threaded sleeve passes through the outlet hole provided on the closed end of the outer sleeve and is connected and installed by a gasket and bolt.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model solves the problem that the internal threaded sleeve is directly locked to the wall of the outer tube, and the internal threaded sleeve is rotated while the connection with the outer tube is loosened. Attached Figure Description

[0012] The present invention will now be described in detail with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the connection between the lead screw and the outer sleeve in this utility model.

[0014] Figure 2 for Figure 1 A schematic diagram of its breakdown.

[0015] Figure 3 for Figure 2 Enlarged diagram of point A in the diagram.

[0016] Figure 4 This is a schematic diagram of the closed end of the outer sleeve in this utility model.

[0017] Figure 5 This is a schematic diagram of the installation of the table leg frame and the screw drive device in this utility model.

[0018] Figure 6 This is a schematic diagram of the side frame of the height-adjustable table of this utility model.

[0019] The following are the specific names of the symbols in the diagram: 1. Outer sleeve; 2. Internal threaded sleeve; 3. Lead screw; 4. Connector; 5. Washer; 6. Bolt; 7. Foot plate; 8. Inner sleeve; 9. Motor box; 10. Motor; 11. Crossbar; 12. Side frame; 101. Outlet hole; 201. Protruding connecting block; 202. Threaded hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] This utility model is an improvement made to address the loose connection between the traditional internal threaded sleeve and the external sleeve, which causes the lead screw to slip and spin freely inside the internal threaded sleeve.

[0022] like Figure 5 and Figure 6As shown, a securely connected electric height-adjustable desk consists of a tabletop (not shown), a table leg frame, and a screw drive device installed inside the table leg frame. The tabletop is fixed to the table leg frame. The screw drive device includes a screw 3, an internally threaded sleeve 2 threadedly connected to the screw 3, and a motor 10 for driving the screw 3 to rotate. The upper end of the internally threaded sleeve 2 is threadedly connected to the screw 3, and the lower end of the internally threaded sleeve 2 passes through the closed end of the outer sleeve 1 in the table leg frame and is connected to the bolt 6 via a washer 5.

[0023] like Figure 5 As shown, the table leg frame includes an inner sleeve 8 and an outer sleeve 1 that fit together and move vertically, as well as a side frame 12 and symmetrical crossbars 11 installed inside the side frame. The crossbars 11 serve as guide rails, and the side frame 12 moves left and right on the crossbars 11. The inner sleeve 8 is fitted inside the outer sleeve 1, and the inner sleeve 8 and the outer sleeve 1 constitute the upper and lower telescopic tubes of the table leg frame. The outer sleeve 1 is fixed to the base plate 7 with screws, supporting the tabletop on the ground.

[0024] The upper end of the inner sleeve 8 is fixedly installed with a motor box 9 for the power supply motor 10. The upper end of the lead screw 3 is installed with a connector 4. The connector 4 passes through the motor box 9 and is connected to the motor 10 for rotation. The motor 10 drives the lead screw 3 to rotate.

[0025] like Figure 2 and Figure 3 As shown, the outer tube 1 is a hollow tube with a closed lower end and an open upper end; and an outlet hole 101 is provided on its closed end face.

[0026] like Figure 4 As shown, the inner wall of the internal threaded sleeve 2 is provided with an internal thread for the lead screw 3 to be connected. The upper end is open to facilitate the screw 3 to be screwed in and connected. A protruding connecting block 201 is provided on the closed end face of the lower end of the internal threaded sleeve 2. The size of the protruding connecting block 201 is adapted to the size of the outlet hole 101. The protruding connecting block 201 can pass through the outlet hole 101 and extend out of the outlet hole 101. The protruding connecting block 201 is provided with a threaded hole 202.

[0027] like Figure 1 and Figure 5As shown, after the internally threaded sleeve 2 is installed into the outer sleeve 1, the protruding connecting block 201 on the internally threaded sleeve 2 passes through the outlet hole 101 provided on the closed end of the outer sleeve 1, and is connected and locked by the washer 5 and the bolt 6. The outer diameter of the washer 5 is larger than the outer diameter of the outlet hole 101. Therefore, the washer 5 and the bolt 6 can only be locked in the threaded hole 202 of the closed end of the internally threaded sleeve 2 from the outside of the outer sleeve 1 to prevent the internally threaded sleeve 2 from falling out of the outer sleeve 1. The screw 3 rotates in the internally threaded sleeve 2, and its rotational force drives the internally threaded sleeve 2 to rotate on the outlet hole 101 of the outer sleeve 1. Therefore, it has no effect on the outer sleeve 1 from beginning to end, and will not loosen any of the fastening screws on the outer sleeve 1, making the connection between the outer sleeve 1 and the base plate 7 and other components more secure.

[0028] like Figure 5 As shown, the installation method of this utility model is as follows: the lead screw 3 is installed in the internal threaded sleeve 2 by means of threads, and then the internal threaded sleeve 2 is passed through the outer sleeve 1, so that the protruding connecting block 201 provided at the closed end of the internal threaded sleeve 2 protrudes out of the outlet hole 101 on the closed end of the outer sleeve 1. The protruding connecting block 201 further extends out of the outlet hole 101. The washer 5 is placed on the protruding connecting block 201 from the outside of the lower end of the outer sleeve 1, and then the bolt 6 is locked in the threaded hole 202. Since the size of the washer 5 is larger than the size of the outlet hole 101, the washer 5 provides resistance. The threaded rod 2 is blocked outside the outlet hole 101. At this time, the threaded rod 2 is stuck inside the outlet hole 101 of the outer sleeve 1. Then, the outer sleeve 1 is locked onto the foot plate 7 with screws. The upper end of the screw rod 3 continues to pass through the lower end of the inner sleeve 8. The connector 4 at the upper end of the screw rod 3 passes through the motor box 9 fixed at the upper end of the inner sleeve 8. The inner sleeve 8 and the motor box 9 form a whole. At this time, the connector 4 is connected to the motor 10 and rotates. The cover plate covers the motor box 9. The motor 10 drives the screw rod 3 to screw in and out of the threaded rod 2. The inner sleeve 8 is fitted inside the outer sleeve 1.

[0029] The inner sleeve 8 and the outer sleeve 1 form a telescopic tube. The internal threaded sleeve 2 and the screw 3 are inside the telescopic tube. The lower end of the telescopic tube is fixed to the base plate 7. The upper end of the telescopic tube, the side frame 12, is fixed to the motor box 9 by screws. Two crossbars 11 form a group and are inserted into both sides of the side frame 12 to form a moving guide rail. According to the length and width of the desktop, the two ends of the crossbars 11 can be flexibly fixed to the side frame 12. Therefore, the different fixed combinations of the side frame 12 and the crossbars 11 can be adapted to desktops of different length and width.

[0030] like Figure 6 As shown, a set of template rods 11 is set between the tops of the two telescopic tubes, and two side frames 12 are provided. The side frames 12 are each connected to the top of the telescopic tubes at various locations. The position of the crossbar 11 locked to the side frame 12 is determined according to the length and width of the table.

Claims

1. A securely connected electric height-adjustable desk, comprising a tabletop, table legs, and a screw drive mechanism installed within the table legs; the screw drive mechanism includes a screw, an internally threaded sleeve threaded to the screw, and a motor for driving the screw to rotate; characterized in that, One end of the internally threaded sleeve is threaded to the lead screw, and the other end of the internally threaded sleeve passes through the outlet hole set on the table leg frame and is connected to the bolt through a washer.

2. The reliably connected electric height-adjustable table according to claim 1, characterized in that, The table leg frame consists of an inner sleeve and an outer sleeve that fit together and lift each other. The outer sleeve is installed and fixed to the base plate, providing support on the ground.

3. The reliably connected electric height-adjustable table according to claim 2, characterized in that, The outer tube is a hollow tube, with one end closed and the other end open; an outlet hole is provided on the closed end face.

4. The reliably connected electric height-adjustable table according to claim 1, characterized in that, The inner wall of the internal threaded sleeve is provided with an internal thread for connecting the lead screw. A protruding connecting block is provided on the closed end face of the internal threaded sleeve. The size of the protruding connecting block is adapted to the size of the outlet hole. The protruding connecting block can be inserted into the outlet hole. The protruding connecting block is provided with a threaded hole.

5. The reliably connected electric height-adjustable table according to claim 2, characterized in that, After the internal threaded sleeve is inserted into the outer sleeve, the protruding connecting block on the internal threaded sleeve passes through the outlet hole set on the closed end of the outer sleeve and is connected and installed by a gasket and bolt.

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