WO2021036854A1

WO2021036854A1 - Cable built-in electric lifting column

Info

Publication number: WO2021036854A1
Application number: PCT/CN2020/109657
Authority: WO
Inventors: 陆小健; 王永超; 樊林; 张东行
Original assignee: 浙江捷昌线性驱动科技股份有限公司
Priority date: 2019-08-26
Filing date: 2020-08-17
Publication date: 2021-03-04
Also published as: CN110626974A

Abstract

An electric lifting column, comprising a telescopic sleeve assembly (1). The telescopic sleeve assembly (1) at least comprises a first sleeve (11) and a second sleeve (12); a transmission assembly (2) is provided in the telescopic sleeve assembly (1); the transmission assembly (2) drives the first sleeve (11) and the second sleeve (12) to stretch out and draw back with respect to each other; cable clamping devices are provided in the telescopic sleeve assembly (1); the cable clamping devices comprise a first cable clamping device (31) and a second cable clamping device (32); the first cable clamping device (31) is located at the upper end of the telescopic sleeve assembly (1), and the second cable clamping device (32) is located at the lower end of the telescopic sleeve assembly (1); a cable (30) penetrates through the interior of the telescopic sleeve assembly (1) and is fixed by the first cable clamping device (31) and the second cable clamping device (32); the upper end of the cable (30) is fixed to the upper end of the electric lifting column, and the cable (30) is pulled by the upper end of the electric lifting column to realize length stretching and retracting inside the telescopic sleeve assembly (1). Some cables (30) can be built in the electric lifting column, so that wiring is tidier, and the safety is also improved.

Description

Electric lifting column with built-in cable

【Technical Field】

The invention relates to a cable built-in electric lifting column, which belongs to the field of linear drive equipment.

【Background technique】

Electric lifting columns are very common parts in the field of linear drive equipment. They are usually widely used in products such as electric lifting tables and electric lifting beds. Such electric lifting columns usually include telescopic sleeve components. There is a transmission assembly inside, and the telescopic sleeve assembly realizes expansion and contraction under the driving action of the transmission assembly.

At present, there are some problems in the use of this type of electric lifting column. Take the electric lifting table as an example. The electric lifting table usually needs to place some electrical equipment, such as the host, display, etc., and the socket of some electric lifting tables is usually Ground plug, which causes the cables of these electric equipment to need to be messy from the desktop to the ground, and because the electric lift table will rise and fall, if this kind of cable is too densely wound, it is likely to interfere with the electric lift table The rise and fall, resulting in some unpredictable losses.

[Summary of the invention]

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a cable built-in electric lifting column, some cables can be built in the electric lifting column, so that the wiring is more tidy, the safety is improved, and the assembly Convenience.

To solve the above technical problems, the present invention adopts the following technical solutions:

An electric lifting column with a built-in cable includes a telescopic sleeve assembly. The telescopic sleeve assembly includes at least a first sleeve and a second sleeve. The telescopic sleeve assembly is provided with a transmission assembly. The transmission assembly The first sleeve and the second sleeve are driven to expand and contract relatively. The telescopic sleeve assembly is provided with a wire fixing device. The wire fixing device includes a first wire fixing device and a second wire fixing device. The wire holder is located at the upper end of the telescopic sleeve assembly, and the second wire holder is located at the lower end of the telescopic sleeve assembly. The cable penetrates the inside of the telescopic sleeve assembly and is fixed by the first and second wire holders. The upper end of the cable is fixed with the upper end of the electric lifting column, and the cable is pulled by the upper end of the electric lifting column to realize the length scaling inside the telescopic sleeve assembly.

The beneficial effects of the present invention:

In the present invention, a wire fixing device is arranged inside the telescopic sleeve assembly, and the wire fixing device includes a first wire fixing device and a second wire fixing device. After such a design, the cables of some electrical equipment can be built in the electric The inside of the lifting column, so that the cable can be routed from the inside of the electric lifting column, so as not to cause the messy phenomenon caused by the exposed cable.

In addition, after the cables are fixed by the first and second fixing devices, their upper and lower positions have relatively fixed positions. When the electric lifting column is lifted and lowered, the upper end of the cable will also follow the electric lifting column. The length is scaled, and under the limited position of the first and second fixing devices, the probability of cables being twisted with each other is very low, and it can also reduce the lifting interference of the electric lifting column due to the cable winding problem to a certain extent.

Finally, the routing of the cable in the present invention can be realized by using only the first wire fixer and the second wire fixer. The structure or the assembly process is relatively simple, and it can be completed without a complicated assembly process. At the same time, there are relatively few parts and components. Both material cost and assembly cost are very advantageous. This is very advantageous for electric lifting columns with very limited internal structural space.

Preferably, the part of the cable between the first wire fixer and the second wire fixer is a free section, and when the upper end of the cable is pulled, the free section is recovered or stretched.

Preferably, the first or second wire fixing device includes a wire clamping clip provided with an opening, and the cable enters the wire clamping clip through the opening.

Preferably, the cable is in interference fit with the clamp, or the cable is fixed in the clamp by a fastener.

Preferably, the length of the wire clip is between 1 cm and 70 cm.

Preferably, the first thread fixing device and the second thread fixing device are located on two different sides of the telescopic sleeve assembly.

Preferably, the electric lifting column further includes a drive box for installing a driving motor, the drive box is located on the top of the electric lifting column, a connecting slider is provided between the transmission assembly and the telescopic sleeve assembly, the The first fixing device is connected with the driving box, or connected with the connecting slider, or freely arranged in the telescopic sleeve assembly.

Preferably, the electric lifting column further includes a bottom plate provided at the bottom of the telescopic sleeve assembly, and the second fixing device is connected to the bottom plate, or connected to the telescopic sleeve assembly, or connected to the connecting slider, or freely Set in the telescopic sleeve assembly.

Preferably, the connecting slider is provided with a through hole for the cable or the first or second fixing device to pass through.

Preferably, there is a protective partition in the telescopic sleeve assembly, and the cable and the telescopic sleeve assembly are separated by the protective partition.

Preferably, the top of the electric lifting column is provided with an upper insertion port, and the upper end of the cable is fixedly connected with the upper insertion port; and/or, the bottom of the electric lifting column is provided with a lower insertion port, so The lower end of the cable is fixedly connected with the lower plug port.

The features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

【Explanation of the drawings】

The present invention will be further explained below in conjunction with the drawings:

FIG. 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

2 is a schematic diagram of the internal structure of the first embodiment of the present invention when it is stretched;

Figure 3 is an exploded schematic diagram of the first embodiment of the present invention;

FIG. 4 is a schematic diagram of the structure of the first embodiment of the present invention when it is contracted.

【detailed description】

The technical solutions of the embodiments of the present invention will be explained and described below in conjunction with the accompanying drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

In the following description, the terms "inner", "outer", "upper", "lower", "left", "right", etc., appearing to indicate orientation or positional relationships are only for the convenience of describing the embodiments and simplifying the description. It does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

Example one:

As shown in Figures 1 to 4, this embodiment shows an electric lifting column, which includes a telescopic sleeve member 1, which at least includes a first sleeve 11 and a second sleeve 12, of course It may also include a third sleeve, a fourth sleeve, etc. In this embodiment, a three-section electric lifting column is shown, that is, it includes a first sleeve 11, a second sleeve 12, a third sleeve 13, and a telescopic sleeve. The pipe member 1 is provided with a transmission assembly 2. The transmission assembly 2 drives the first sleeve 11 and the second sleeve 12 to expand and contract relatively. For the structure of the transmission assembly 2, it mainly includes a transmission screw, a transmission It is composed of nuts and other structures. When the transmission screw rotates, it drives the transmission nut to move up and down. The transmission nut drives the telescopic sleeve member 1 to expand and contract. Since the structure of the transmission assembly 2 has been widely disclosed in the previous electric lifting columns, this article will not go too far. Elaboration.

In this embodiment, the telescopic sleeve member 1 is provided with a wire holder, and the wire holder includes a first wire holder 31 and a second wire holder 32. The first wire holder 31 is located on the telescopic sleeve member. At the upper end of 1, the second wire holder 32 is located at the lower end of the telescopic sleeve member 1, and the cable 30 penetrates the inside of the telescopic sleeve member 1 and is fixed by the first wire holder 31 and the second wire holder 32. The upper end of the 30 is fixed to the upper end of the electric lifting column, and the cable 30 is pulled by the upper end of the electric lifting column to realize the length scaling inside the telescopic sleeve member 1.

In this embodiment, since the wire retainer is provided inside the telescopic sleeve member 1, after such a design, the cable 30 can be built into the inside of the electric lifting column, so that the cable 30 can be removed from the inside of the electric lifting column. The wiring is carried out so as not to cause the messy phenomenon caused by the exposed cable 30.

In addition, after the cable 30 is fixed by the first wire holder 31 and the second wire holder 32, its upper end position and lower end position have relatively fixed positions. When the electric lifting column is lifted and lowered, the upper end of the cable 30 will follow The electric lifting column realizes the length scaling, and under the limitation of the position of the first wire fixing device 31 and the second wire fixing device 32, the probability of the cables 30 being entangled with each other is very low, and it can also reduce to a certain extent the problem of entanglement of the cables 30. The lifting interference of the electric lifting column.

Finally, the routing of the cable 30 in this embodiment can be realized by using only the first wire fixer 31 and the second wire fixer 32. The structure or the assembly process is relatively simple, and no complicated assembly process is required. It can be completed with fewer parts. Both material cost and assembly cost are very advantageous. This is very advantageous for electric lifting columns with very limited internal structural space.

In this embodiment, the portion of the cable 30 between the first wire holder 31 and the second wire holder 32 is a free section 301. When the upper end of the cable 30 is pulled, the free section 301 Realize recycling or stretching. It can be combined with Figure 3 and Figure 4. Figure 3 shows the cable 30 when the electric lifting column has been stretched to its maximum stroke, and Figure 4 shows the cable 30 when the electric lifting column has retracted to its minimum stroke. During the retraction process, the part between the upper end of the electric lifting column and the first thread fixing device 31, and the part between the lower end of the electric lifting column and the second thread fixing device 32, are not recovered, and the recovered or stretched part is basically Concentrate on the free section 301 between the first wire fixer 31 and the second wire fixer 32, so that the recovery part and the stretched part of the cable 30 become more controllable, so as not to cause recovery or recovery in many sections. Stretch.

In this embodiment, the specific structure of the first thread fixing device 31 and the second thread fixing device 32 can be seen in FIG. 3. The first thread fixing device 31 or the second thread fixing device 32 includes a card provided with an opening 311 The cable clamp, the cable 30 enters the clamp through the opening 311. The axial length of the clamp can be adapted according to the length of the telescopic sleeve member 1, and is generally selected between 1 cm and 70 cm. For example, in this embodiment In an example, if the electric lifting column is a three-section telescopic sleeve member 1, the length of the clamp can preferably be almost the length of one sleeve, or slightly less than the length of one sleeve. Of course, you can also choose 1/ Two casings, 1/3 casing lengths, etc. are all possible.

The cable 30 and the clamping clamp are basically fixed and matched, that is, after the cable 30 is clamped into the clamping clamp, the two basically do not move relative to each other. Therefore, when the cable 30 is pulled by the electric lifting column, the clamping clamp follows the line. For the synchronous movement of the cable 30, the connection between the cable 30 and the clamp may be an interference fit, or the cable 30 may be fixed in the clamp by a fastener.

In addition, with regard to the positional relationship between the first thread retainer 31 and the second thread retainer 32, in this embodiment, it is preferable that the first thread retainer 31 and the second thread retainer 32 are located on the telescopic sleeve member. 1, as shown in Fig. 4, the first thread fixer 31 is close to the left side wall of the telescopic sleeve member 1, and the second thread fixer 32 is close to the right side of the telescopic sleeve member 1. The side wall, the purpose of this design is to allow enough lateral space between the first thread holder 31 and the second thread holder 32 to be reserved between the first thread holder 31 and the second thread holder 32 The free section 301 is recycled or stretched.

As for the first thread fixing device 31 and the second thread fixing device 32, the connection relationship between the first thread fixing device 31 and the second thread fixing device 32 can be implemented in various ways, such as the first thread fixing device 31 and the second thread fixing device 1. The device 32 can be freely arranged in the telescopic sleeve member 1, and is not connected to the telescopic sleeve member 1. When the electric lifting column realizes the lifting, the first wire fixing device 31 is restrained by the upper end of the cable 30, and its upper and lower positions are relatively fixed. However, the upper and lower positions of the second thread retainer 32 are relatively fixed due to its own gravity, so the first thread retainer 31 and the second thread retainer 32 can be freely arranged in the telescopic sleeve member 1.

Of course, if for the sake of optimization, the positions of the first thread fixing device 31 and the second thread fixing device 32 can be more stable, the first thread fixing device 31 and the second thread fixing device 32 can be subjected to certain positioning processing. As for the fixing device 31, it can be connected to the drive box 4 on the top of the electric lifting column. The drive box 4 is a component arranged on the top of the telescopic sleeve member 1. The drive motor 41, the speed change mechanism, etc. are all installed on the drive Inside the box body 4, for example, in this embodiment, the upper end of the first thread fixer 31 extends into the drive box body 4. The drive box body 4 includes a bottom shell 42 and an upper cover 43. The upper cover 43 is provided with a downwardly extending The plug post 431 is provided with a slot adapted to the shape of the first wire holder 31, the upper end of the first wire holder 31 is inserted into the slot for positioning, and the cable 30 is removed from The upper end of the first thread fixer 31 extends.

It should be noted that in other embodiments, the first fixing device 31 may also be directly installed on the inner wall of the telescopic sleeve member 1, for example, on the inner wall of the first sleeve 11.

As for the second thread holder 32, similarly, in this embodiment, the position of the second thread holder 32 can be more stable, and the second thread holder 32 is also positioned. Specifically, the transmission assembly in this embodiment A connecting slider 5 is provided between the component 2 and the telescopic sleeve member 1. When the transmission assembly 2 expands and contracts, the connecting slider 5 transmits the force to the telescopic sleeve member 1, thereby driving the telescopic sleeve member 1 is telescopic, the connecting slider 5 is a component that is basically included in the current electric lifting column. In this embodiment, the second thread retainer 32 is positioned by means of the connecting slider 5. Specifically, this embodiment The connecting slider 5 is provided with a perforation 51 through which the second thread retainer 32 passes. The perforation 51 can just achieve a positioning function for the second thread retainer 32, and the second thread retainer 32 and the perforation 51 The relationship can be an interference fit or a clearance fit, both of which are possible.

It should be noted that in other embodiments, the second fixing device 32 may also be directly installed on the inner wall of the telescopic sleeve member 1, or may be connected to the bottom plate 14 at the bottom of the telescopic sleeve member 1. The positioning of the second thread fixer 32 can be completed, and these embodiments fall within the protection scope of the present invention.

In addition, in order to improve safety, in this embodiment, the telescopic sleeve member 1 has a protective partition 6, and the cable 30 and the telescopic sleeve member 1 are separated by a protective partition 6, because the telescopic sleeve The first sleeve 11, the second sleeve 12, etc. in the component 1 are usually metal components. If the cable 30 is damaged and comes into contact with the metal component, it is likely to cause safety hazards. Therefore, in order to avoid such accidents as much as possible, this implementation For example, an insulating protective partition 6 is provided in the telescopic sleeve member 1, so that even if the cable 30 is damaged, it will not directly contact the telescopic sleeve. As for the protective partition 6, the installation method can be directly fixed on the inner wall of the telescopic sleeve member 1, or fixed with the connecting slider 5. As in this embodiment, the protective partition 6 is Two buckles 61 are installed on the connecting slider 5.

In addition, when manufacturers sell electric lifting columns, they usually sell them as finished products, and if consumers need to clip the cable 30 into the first wire holder 31 and the second wire holder 32, It is unrealistic to disassemble the electric lifting column. Therefore, in order to facilitate the wiring of consumers, the top of the electric lifting column in this embodiment is provided with an upper insertion port 71, and the upper end of the cable 30 is connected to the upper insertion port. 71 is fixedly connected, and the cable 30 of the consumer's electrical equipment can be transferred to the upper plug port 71. Similarly, the bottom of the electric lifting column is provided with a lower plug port 72, and the cable 30 The lower end is fixedly connected to the lower plug port 72, and the lower plug port 72 can be connected to the ground plug through a patch cord.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the drawings and the description in the above specific embodiments. content. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

An electric lifting column with a built-in cable includes a telescopic sleeve assembly. The telescopic sleeve assembly includes at least a first sleeve and a second sleeve. The telescopic sleeve assembly is provided with a transmission assembly. The transmission assembly Drive the first sleeve and the second sleeve to expand and contract relatively, characterized in that a wire fixing device is provided inside the telescopic sleeve assembly, and the wire fixing device includes a first wire fixing device and a second wire fixing device. The first fixing device is located at the upper end of the telescopic sleeve assembly, and the second fixing device is located at the lower end of the telescopic sleeve assembly. The cable penetrates the inside of the telescopic sleeve assembly and is secured by the first and second fixing devices. The upper end of the cable is fixed with the upper end of the electric lifting column, and the cable is pulled by the upper end of the electric lifting column to realize the length scaling inside the telescopic sleeve assembly.
The cable built-in electric lifting column according to claim 1, wherein the part of the cable between the first fixing device and the second fixing device is a free section, and the upper end of the cable is When pulled, the free section is recovered or stretched.
The cable built-in electric lifting column according to claim 1, wherein the first or second fixing device comprises a clamping clamp provided with an opening, and the cable enters the clamping wire through the opening Folder inside.
The cable built-in electric lifting column according to claim 3, wherein the cable and the wire clamp are interference fit, or the cable is fixed in the wire clamp by a fastener.
The cable built-in electric lifting column according to claim 3, wherein the length of the wire clamp is between 1 cm and 70 cm.
The cable built-in electric lifting column according to claim 1, wherein the first and second fixing devices are located on two different sides of the telescopic sleeve assembly.
The cable built-in electric lifting column according to claim 1, wherein the electric lifting column further comprises a drive box for installing a drive motor, the drive box is located on the top of the electric lifting column, and the transmission assembly A connecting slider is arranged between the assembly and the telescopic sleeve assembly, and the first wire fixing device is connected with the driving box body, or connected with the telescopic sleeve assembly, or is freely arranged in the telescopic sleeve assembly.
The cable built-in electric lifting column according to claim 7, wherein the electric lifting column further comprises a bottom plate provided at the bottom of the telescopic sleeve assembly, and the second wire fixing device is connected to the bottom plate, or It is connected with the telescopic sleeve assembly, or connected with the connecting slider, or is freely arranged in the telescopic sleeve assembly.
The cable built-in electric lifting column according to claim 8, wherein the connecting slider is provided with a through hole for the cable or the first or second fixing device to pass through .
The cable built-in electric lifting column according to claim 1, wherein a protective partition is arranged in the telescopic sleeve assembly, and the cable and the telescopic sleeve assembly are separated by a protective partition.
The cable built-in electric lifting column according to claim 1, wherein the top of the electric lifting column is provided with an upper insertion port, and the upper end of the cable is fixedly connected to the upper insertion port; and/or , The bottom of the electric lifting column is provided with a lower plug port, and the lower end of the cable is fixedly connected with the lower plug port.