Simultaneously driving the upper support rod and the lower support rod

Abstract

This invention discloses a telescopic electric support rod that simultaneously drives an upper support rod and a lower support rod. The screw has an upper thread and a lower thread with opposite directions of rotation. The first flange of the upper support rod nut and the second flange of the lower support rod nut simultaneously engage in the second axial groove of the guide tube, allowing the upper and lower support rod nuts to move only axially along the second axial groove of the guide tube. In this invention, the screw simultaneously drives the upper and lower support rods to move in opposite directions, achieving rapid telescopic adjustment of the electric support rod's length. It features rapid telescopic movement and a compact structure.

Description

Technical Field

[0001] This invention belongs to the field of electric support rod technology, and in particular to a telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod. Background Technology

[0002] With the application and promotion of intelligent control, electric support rods have been widely used due to their ability to control more precisely. They are applied in technical fields such as height-adjustable desks, height-adjustable chairs, and height-adjustable workbenches. Electric support rods use screw transmission to convert the rotational motion of the screw into the axial extension and retraction motion of the support rod, thereby adjusting the support length of the support rod. In situations where rapid adjustment is required, the slow extension and retraction of the electric support rod will take longer to adjust to the required length, thus affecting the performance of the support rod. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a telescopic electric support rod that simultaneously drives both the upper and lower support rods, enabling rapid extension and retraction with a compact structure.

[0004] A telescopic electric support rod that simultaneously drives an upper support rod and a lower support rod includes a motor mounting rear cover, a motor and gearbox assembly, a motor mounting front cover, a retaining ring, a bearing, a screw, an upper support rod, an upper support rod nut, a pin, a lower support rod nut, a lower support rod, a base plate, and a guide tube. The rear end of the motor and gearbox assembly is fixed inside the motor mounting rear cover, and the front end of the motor and gearbox assembly is fixed inside the motor mounting front cover. The first buckle of the motor mounting front cover is tightly fastened into the hole of the motor mounting rear cover, thus fixing the motor mounting rear cover, the motor and gearbox assembly, and the motor mounting front cover into a whole. The first flange of the motor mounting front cover and the second flange of the motor mounting rear cover are simultaneously fastened into the first axial groove of the upper support rod, so that the motor mounting front cover and the motor mounting rear cover can only move axially along the first axial groove of the upper support rod. The bearing is installed in the countersunk hole at the bottom of the motor mounting front cover, and the screw passes through the center hole of the bearing and the bottom of the motor mounting front cover. The screw extends into the hole of the power output gear in the motor and transmission assembly. A retaining ring is provided on the screw to hold the top of the screw in the hole of the power output gear in the motor and transmission assembly. The screw has an upper thread and a lower thread with opposite directions of rotation. The bottom end of the upper support rod is provided with an upper support rod nut, which is fixed to the bottom end of the upper support rod with a pin. The upper support rod nut is fitted onto the upper thread of the screw. The top end of the lower support rod is provided with a lower support rod nut, which is fixed to the top end of the lower support rod with a pin. The bottom of the lower support rod is provided with a base plate for fixing the bottom of the support rod assembly, which is fixed to the bottom of the lower support rod with a pin. The guide tube is fitted on the upper support rod and outside the lower support rod. The first flange of the upper support rod nut and the second flange of the lower support rod nut are simultaneously engaged in the second axial groove of the guide tube, so that the upper support rod nut and the lower support rod nut can only move axially along the second axial groove of the guide tube.

[0005] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the motor drives the screw to rotate against the direction of the upper support rod nut thread. At the same time, the lower support rod nut drives the screw to move downward, until the bottom surface of the upper support rod nut abuts against the top surface of the lower support rod nut. This causes the upper and lower support rods to move towards each other, thereby shortening the length of the electric support rod.

[0006] In the telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod, the top of the upper support rod is provided with a top seat that fixes the top of the support rod assembly. The top seat is provided with a second buckle that is fastened into the first side hole of the upper support rod to fix the top seat on the upper support rod.

[0007] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the upper and lower ends of the guide tube are respectively provided with guide tube end caps. The guide tube end caps are provided with a third buckle that is fastened in the second side hole of the guide tube to fix the guide tube end caps on the guide tube.

[0008] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the top of the conduit end cap extends into the inner cavity of the conduit. The upper conduit end cap is fitted onto the outer circle of the upper support rod, and the lower conduit end cap is fitted onto the outer circle of the lower support rod, thereby constraining the upper and lower support rods to a coaxial state.

[0009] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the thread of the upper support rod nut that mates with the upper section thread of the screw is a right-hand thread, and the thread of the lower support rod nut that mates with the lower section thread of the screw is a left-hand thread.

[0010] The telescopic electric support rod that simultaneously drives the upper and lower support rods has a centrally symmetrical structure.

[0011] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the guide tube is a cylindrical structure.

[0012] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the motor mounting rear cover and the motor mounting front cover are respectively semi-cylindrical structures located inside the guide tube.

[0013] In the telescopic electric support rod that simultaneously drives the upper and lower support rods, the screw is located on the central axis of the conduit.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The screw simultaneously drives the upper and lower support rods to move in opposite directions or away from each other, enabling rapid extension and retraction adjustment of the electric support rod length. It can extend and retract quickly and has a compact structure. Attached Figure Description

[0016] The accompanying drawings illustrate exemplary embodiments of the invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0017] Figure 1 This is a cross-sectional schematic diagram of the shortest state of a telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod in one embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional schematic diagram of the telescopic electric support rod in its longest state, which simultaneously drives the upper support rod and the lower support rod in one embodiment of the present invention. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The technical solution of this invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise stated, the exemplary embodiments / exemplifications shown are to be understood as providing exemplary features of various details that provide ways in which the technical concept of the invention can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / exemplifications may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concept of the invention.

[0022] Crosshairs and / or shading may be used in the accompanying drawings to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, the dimensions and relative dimensions of components may be exaggerated in the accompanying drawings for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a manner different from the described order of steps. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of the described process. Moreover, the same reference numerals denote the same components.

[0023] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0024] For descriptive purposes, the present invention may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0025] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0026] See Figures 1 to 2In one embodiment, the telescopic electric support rod of the present invention, which simultaneously drives the upper and lower support rods, includes a motor mounting rear cover 1, a motor and gearbox assembly 2, a motor mounting front cover 3, a retaining ring 4, a bearing 5, a screw 6, an upper support rod 7, an upper support rod nut 8, a pin 9, a lower support rod nut 11, a lower support rod 12, a base plate 13, and a guide tube 15. The rear end of the motor and gearbox assembly 2 is fixed inside the motor mounting rear cover 1, and the front end of the motor and gearbox assembly 2 is fixed inside the motor mounting front cover 3. The first buckle 3 of the motor mounting front cover 3... -2 is tightly fastened into the hole 1-2 of the motor mounting rear cover 1, thereby fixing the motor mounting rear cover 1, the motor and gearbox assembly 2, and the motor mounting front cover 3 into a whole. The first flange 3-1 of the motor mounting front cover 3 and the second flange 1-1 of the motor mounting rear cover 1 are simultaneously fastened into the first axial groove 7-2 of the upper support rod 7, so that the motor mounting front cover 3 and the motor mounting rear cover 1 can only move axially along the first axial groove 7-2 of the upper support rod 7. The bearing 5 is installed in the countersunk hole at the bottom of the motor mounting front cover 3, and the screw 6 passes through the center hole of the bearing 5 and the bottom of the motor mounting front cover 3. The screw 6 extends through a hole into the hole of the power output gear 2-1 inside the motor and transmission assembly 2. A retaining ring 4 is provided on the screw 6 to hold the top of the screw 6 within the hole of the power output gear 2-1 inside the motor and transmission assembly 2. The screw 6 has an upper thread and a lower thread with opposite directions of rotation. An upper support rod nut 8 is provided at the bottom end of the upper support rod 7, and a pin 9 fixes the upper support rod nut 8 to the bottom end of the upper support rod 7. The upper support rod nut 8 is fitted onto the upper thread of the screw 6. A lower support rod nut 11 is provided at the top end of the lower support rod 12. The lower support rod nut 11 is fixed to the top of the lower support rod 12 with a pin 9. The bottom of the lower support rod 12 is provided with a base plate 13 for fixing the bottom of the support rod assembly. The base plate 13 is fixed to the bottom of the lower support rod 12 with a pin 9. The guide tube 15 is sleeved on the upper support rod 7 and outside the lower support rod 12. The first flange 8-1 of the upper support rod nut 8 and the second flange 11-1 of the lower support rod nut 11 are simultaneously fastened in the second axial groove 15-2 of the guide tube 15 so that the upper support rod nut 8 and the lower support rod nut 11 can only move axially along the second axial groove 15-2 of the guide tube 15.

[0027] In the preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the motor drives the screw 6 to rotate against the direction of the thread of the upper support rod nut 8. At the same time, the lower support rod nut 11 drives the screw 6 to move downward, and the screw 6 drives the upper support rod nut 8 to move downward until the bottom surface of the upper support rod nut 8 abuts against the top surface of the lower support rod nut 11. This causes the upper support rod 7 and the lower support rod 12 to move towards each other, thereby shortening the length of the electric support rod.

[0028] In a preferred embodiment of the telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod, the top of the upper support rod 7 is provided with a top seat 10 for fixing the top of the support rod assembly. The top seat 10 is provided with a second buckle 10-1 that is fastened in the first side hole 7-1 of the upper support rod 7 to fix the top seat 10 on the upper support rod 7.

[0029] In a preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the upper and lower ends of the conduit 15 are respectively provided with conduit end caps 14. The conduit end caps 14 are provided with a third buckle 14-1 that is tightly fastened in the second side hole 15-1 of the conduit 15 to fix the conduit end caps 14 on the conduit 15.

[0030] In a preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the top of the conduit end cap 14 extends into the inner cavity of the conduit 15, the upper conduit end cap 14 is fitted on the outer circle of the upper support rod 7 and the lower conduit end cap 14 is fitted on the outer circle of the lower support rod 12, thereby constraining the upper support rod 7 and the lower support rod 12 to a coaxial state.

[0031] In the preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the thread of the upper support rod nut 8, which mates with the upper thread of the screw 6, is a right-hand thread, and the thread of the lower support rod nut 11, which mates with the lower thread of the screw 6, is a left-hand thread.

[0032] In the preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the telescopic electric support rod that simultaneously drives the upper and lower support rods has a centrally symmetrical structure.

[0033] In a preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the conduit 15 is a cylindrical structure.

[0034] In a preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the motor mounting rear cover 1 and the motor mounting front cover 3 are respectively semi-cylindrical structures disposed inside the guide tube.

[0035] In a preferred embodiment of the telescopic electric support rod that simultaneously drives the upper and lower support rods, the screw 6 is located on the central axis of the conduit 15.

[0036] In one embodiment, such as Figure 1As shown, a telescopic electric support rod that simultaneously drives an upper support rod and a lower support rod includes a motor mounting rear cover 1, a motor and gearbox assembly 2, a motor mounting front cover 3, a retaining ring 4, a bearing 5, a screw 6, an upper support rod 7, an upper support rod nut 8, a pin 9, a top seat 10, a lower support rod nut 11, a lower support rod 12, a base plate 13, a guide tube end cap 14, and a guide tube 15. The rear end of the motor and gearbox assembly 2 is fixed inside the motor mounting rear cover 1, and the front end of the motor and gearbox assembly 2 is fixed inside the motor mounting front cover 3. The first buckle 3-2 of the motor mounting front cover 3 is tightly fastened into the hole 1-2 of the motor mounting rear cover 1, thereby fixing the motor mounting rear cover 1, the motor and gearbox assembly 2, and the motor mounting front cover 3 into a whole. The flange 3-1 and the second flange 1-1 of the motor mounting cover 1 are simultaneously engaged in the first axial groove 7-2 of the upper support rod 7, allowing the motor mounting front cover 3 and the motor mounting rear cover 1 to move axially along the axial groove 7-2 of the upper support rod 7. The bearing 5 is installed in the countersunk hole at the bottom of the motor mounting front cover 3. The screw 6 passes through the center hole of the bearing 5 and the through hole at the bottom of the motor mounting front cover 3 and extends into the hole of the power output gear 2-1 in the motor and gearbox assembly 2. The screw 6 is provided with a retaining ring 4 to hold the top of the screw 6 in the hole of the power output gear 2-1 in the motor and gearbox assembly 2. The screw 6 is provided with an upper thread and a lower thread, and the upper thread and the lower thread on the screw 6 have opposite directions of rotation, that is, the upper thread of the screw 6 is a right-hand thread and the lower thread of the screw 6 is a left-hand thread. The upper support rod 7 has a threaded design. The bottom end of the upper support rod 7 is provided with an upper support rod nut 8, which is fixed to the bottom end of the upper support rod 7 with a pin 9. The upper support rod nut 8 is fitted onto the upper thread of the screw rod 6. The top end of the upper support rod 7 is provided with a top seat 10 for fixing the top of the support rod assembly. The top seat 10 has a second buckle 10-1 that is tightly fastened into the first side hole 7-1 of the upper support rod 7, thus fixing the top seat 10 onto the upper support rod 7. The top end of the lower support rod 12 is provided with a lower support rod nut 11, which is fixed to the top end of the lower support rod 12 with a pin 9. The bottom end of the lower support rod 12 is provided with a base plate 13 for fixing the bottom of the support rod assembly, which is fixed to the bottom of the lower support rod 12 with a pin 9. The guide tube 15 is fitted onto the upper support rod 7 and the lower support rod 12. 2. Externally, the first flange 8-1 of the upper support rod nut 8 and the second flange 11-1 of the lower support rod nut 11 are simultaneously fastened into the second axial groove 15-2 of the upper guide tube 15, so that the upper support rod nut 8 and the lower support rod nut 11 can only move axially along the second axial groove 15-2 of the guide tube 15. Guide tube end caps 14 are respectively provided at the upper and lower ends of the guide tube 15. A third buckle 14-1 is provided on the guide tube end cap 14, which is tightly fastened into the second side hole 15-1 of the guide tube 15, thus fixing the guide tube end cap 14 onto the guide tube 15. The top of the guide tube end cap 14 extends into the inner cavity of the guide tube 15. The upper guide tube end cap 14 is fitted onto the outer circle of the upper support rod 7, and the lower guide tube end cap 14 is fitted onto the outer circle of the lower support rod 12, thereby constraining the upper support rod 7 and the lower support rod 12 into a coaxial state.The upper support rod nut 8, which mates with the right-hand thread of the upper section of the screw 6, has a right-hand thread. The lower support rod nut 11, which mates with the left-hand thread of the lower section of the screw 6, has a left-hand thread. When the motor drives the screw 6 to rotate in the opposite direction of the thread of the upper support rod nut 8, the lower support rod nut 11 drives the screw 6 to move downwards, and simultaneously the screw 6 drives the upper support rod nut 8 to move downwards until the bottom surface of the upper support rod nut 8 abuts against the top surface of the lower support rod nut 11. This causes the upper support rod 7 and the lower support rod 12 to move towards each other, thus shortening the length of the electric support rod. The screw 6 simultaneously drives the upper support rod 7 and the lower support rod 12 to move towards each other, achieving rapid adjustment of the length of the electric support rod.

[0037] In one embodiment, such as Figure 2 As shown, a fast-extending electric support rod has a screw 6 with two sections of threads, one upper and one lower, with opposite directions of rotation. Specifically, the upper section of the screw 6 has a right-hand thread, while the lower section has a left-hand thread. The upper support rod nut 8, which mates with the right-hand thread of the upper section of the screw 6, has a right-hand thread, and the lower support rod nut 11, which mates with the left-hand thread of the lower section of the screw 6, has a left-hand thread. When the motor drives the screw 6 to rotate in the direction of rotation of the upper support rod nut 8, the lower support rod nut 11 drives the screw 6 to move upward, and the screw 6 drives the upper support rod nut 8 to move upward until the top surface of the upper support rod nut 8 abuts against the bottom surface of the bearing 5. This causes the upper support rod 7 and the lower support rod 12 to move in opposite directions, thereby extending the length of the electric support rod. The screw 6 simultaneously drives the upper support rod 7 and the lower support rod 12 to move in opposite directions, achieving rapid extension adjustment of the length of the electric support rod.

[0038] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A telescopic electric support rod that simultaneously drives an upper support rod and a lower support rod, characterized in that, It includes: Motor mounting rear cover (1), motor and gearbox assembly (2), motor mounting front cover (3), screw (6), upper support rod (7), upper support rod nut (8), lower support rod nut (11), lower support rod (12), The first buckle (3-2) of the motor mounting front cover (3) is fastened in the hole (1-2) of the motor mounting rear cover (1), thereby fixing the motor mounting rear cover (1), the motor and gearbox assembly (2) and the motor mounting front cover (3) into a whole. The first flange (3-1) of the motor mounting front cover (3) and the second flange (1-1) of the motor mounting rear cover (1) are simultaneously fastened in the first axial groove (7-2) of the upper support rod (7), so that the motor mounting front cover (3) and the motor mounting rear cover (1) can only move axially along the axial groove (7-2) of the upper support rod (7). The screw (6) has an upper thread and a lower thread, and the upper thread and the lower thread have opposite directions of rotation. The bottom end of the upper support rod (7) is provided with an upper support rod nut (8), which is fixed to the bottom end of the upper support rod (7) by a pin (9). The upper support rod nut (8) is fitted on the upper thread of the screw (6). The top end of the lower support rod (12) is provided with a lower support rod nut (11), which is fixed to the top end of the lower support rod (12) by a pin (9). The conduit (15) is fitted on the upper support rod (7) and outside the lower support rod (12). The first flange (8-1) of the upper support rod nut (8) and the second flange (11-1) of the lower support rod nut (11) are simultaneously fastened in the second axial groove (15-2) of the conduit (15), so that the upper support rod nut (8) and the lower support rod nut (11) can only move axially along the second axial groove (15-2) of the conduit (15). The telescopic electric support rod that simultaneously drives the upper and lower support rods has a centrally symmetrical structure. The screw (6) is located on the central axis of the conduit (15); The upper and lower ends of the conduit (15) are respectively provided with conduit end caps (14). The conduit end caps (14) are provided with a third buckle (14-1) that is tightly fastened in the second side hole (15-1) of the conduit (15) to fix the conduit end caps (14) on the conduit (15). The top of the conduit end caps (14) extends into the inner cavity of the conduit (15). The upper conduit end cap (14) is fitted on the outer circle of the upper support rod (7) and the lower conduit end cap (14) is fitted on the outer circle of the lower support rod (12), so that the upper support rod (7) and the lower support rod (12) are constrained to be coaxial. The thread of the upper support rod nut (8) that is in sync with the right-hand thread of the upper section of the screw (6) is a right-hand thread. The lower support rod nut (11) of the lower section of (6) is a left-hand thread. When the motor drives the screw (6) to rotate in the opposite direction of the upper support rod nut (8), the lower support rod nut (11) drives the screw (6) to move downward. At the same time, the screw (6) drives the upper support rod nut (8) to move downward until the bottom surface of the upper support rod nut (8) abuts against the top surface of the lower support rod nut (11). This causes the upper support rod (7) and the lower support rod (12) to move towards each other, thereby shortening the length of the electric support rod. The screw (6) simultaneously drives the upper support rod (7) and the lower support rod (12) to move towards each other, thus realizing the rapid shortening and adjustment of the length of the electric support rod.

2. The telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod according to claim 1, characterized in that, The top of the upper support rod (7) is provided with a top seat (10) for fixing the top of the support rod assembly. The top seat (10) is provided with a second buckle (10-1) which is fastened in the first side hole (7-1) of the upper support rod (7) to fix the top seat (10) on the upper support rod (7).

3. The telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod according to claim 1, characterized in that, The upper support rod nut (8) that mates with the upper section of the screw (6) has a right-hand thread, and the lower support rod nut (11) that mates with the lower section of the screw (6) has a left-hand thread.

4. The telescopic electric support rod that simultaneously drives the upper support rod and the lower support rod according to claim 1, characterized in that, The conduit (15) has a cylindrical structure.

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