Telescopic column device with anti-falling structure
By using components such as anti-removal limit screws and limit rods in the telescopic column structure, the safety hazards that the existing telescopic column structure is easily released when it withstands tensile force, and the stable and reliable operation of the device is achieved.
Patent Information
- Application Number
- CN202421630055.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing telescopic column structure is prone to break out when it withstands tension from both ends, which poses safety risks.
A telescopic column device with an anti-detachment structure is designed, and components such as anti-detachment limit screws and limit rods are used. Through the anti-detachment design between the inside and the outside, it ensures that the device is not easily disengaged when subjected to tension.
It effectively prevents the telescopic column device from breaking out when it is subjected to tension, improves safety and reliability, and ensures the stable operation of the device.
Smart Images
Figure CN222963682U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of telescopic structures and relates to a telescopic column device with an anti - detachment structure. Background Art
[0002] At present, there are some telescopic column structures driven by lead screws. These telescopic column structures can be installed on the ceiling to realize the lifting of a display device.
[0003] The existing telescopic column structures can bear large pressures from the upper and lower ends, but it is difficult to bear the tensile forces from both ends. When the tensile force is large, the whole lead screw or the column will come off, so there are certain safety problems. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a telescopic column device with an anti - detachment structure for the above - mentioned problems existing in the prior art.
[0005] The purpose of the utility model can be achieved by the following technical solutions: A telescopic column device with an anti - detachment structure, comprising:
[0006] A column assembly, the column assembly includes a first pipe fitting and a second pipe fitting, and the first pipe fitting and the second pipe fitting are connected to form a telescopic pipe structure;
[0007] A lead screw assembly, the lead screw assembly includes a lead screw and a connecting piece, the lead screw is in threaded connection with the connecting piece, the connecting piece is installed in the first pipe fitting and the two are fixedly connected through an anti - detachment limiting piece;
[0008] A mounting seat, and the second pipe fitting is installed on the mounting seat.
[0009] Preferably, the anti - detachment limiting piece is an anti - detachment limiting screw; the number of the anti - detachment limiting screws is four groups, and the four groups of anti - detachment limiting screws are respectively fixedly connected to the four side surfaces of the connecting piece.
[0010] Preferably, it further includes a limiting rod and a limiting bracket. The limiting bracket is arranged on the second pipe fitting, the limiting rod is arranged on the first pipe fitting, the limiting rod is slidably connected with the limiting bracket, a limiting block is arranged at the free end of the limiting rod, and the limiting block is in limiting cooperation with the limiting bracket.
[0011] Preferably, it further includes a third pipe fitting, a limiting rod and a limiting bracket. The third pipe fitting and the first pipe fitting are connected to form a telescopic pipe structure; the limiting bracket is arranged on the first pipe fitting, the limiting rod is arranged on the third pipe fitting, the limiting rod is slidably connected with the limiting bracket, a limiting block is arranged at the free end of the limiting rod, and the limiting block is in limiting cooperation with the limiting bracket.
[0012] Preferably, the limiting bracket is provided with a limiting hole, and the limiting rod passes through the limiting hole; the outer diameter of the limiting block is larger than the inner diameter of the limiting hole; when the first pipe fitting extends relative to the second pipe fitting to the maximum stroke position, the limiting block is in contact connection with the limiting bracket and restricts the movement of the first pipe fitting.
[0013] Preferably, the limiting bracket includes a first plate member, a second plate member and a third plate member. One side of the second plate member is connected to the first plate member, and the other side of the second plate member is connected to the third plate member. The side of the first plate body away from the second plate member is connected to the first pipe fitting, and the side of the third plate body away from the second plate member is connected to the first pipe fitting.
[0014] Preferably, a limiting member is provided at the free end of the screw rod; when the first pipe fitting extends relative to the second pipe fitting to the maximum stroke position, the limiting member is in contact connection with the connecting member.
[0015] Preferably, a limiting sheet metal is fixedly connected to the end face of the connecting member, and the limiting sheet metal is in contact connection with the end face of the first pipe fitting.
[0016] Preferably, the overall or partial contour of the limiting sheet metal is larger than the contour of the end face of the first pipe fitting.
[0017] Preferably, a travel switch is installed on the second pipe fitting, the contact of the travel switch extends into the second pipe fitting, and a contact portion for contacting the contact of the travel switch is provided on the connecting member; when the contact portion contacts the contact of the travel switch, the travel switch is triggered to stop the motor from rotating.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0019] 1. The anti-disengagement limiting member firmly fixes the connecting member and the first pipe fitting together to form an internal anti-disengagement design, so that the telescopic column device is not easily disengaged when bearing tension.
[0020] 2. Four anti-disengagement limiting screws fix the connecting member from four directions of front, back, left and right. This design provides uniformly distributed support and fastening force, ensuring that the connecting member and the first pipe fitting are tightly locked, and preventing loosening or disengagement caused by uneven single-point force. Each anti-disengagement limiting screw bears a part of the tensile force dispersion, which not only enhances the strength of the connection, but also reduces the risk of failure of a single connection point due to overload.
[0021] 3. In addition to the above-mentioned internal anti-slip design, this device is also equipped with a limit rod as an external anti-slip measure. When the first pipe is extended to the maximum stroke position relative to the second pipe, the limit block will contact the limit hole of the limit bracket. Since the outer diameter of the limit block is larger than the inner diameter of the limit hole, when the two are in contact, the limit block will have a hard contact with the limit bracket, preventing the first pipe from continuing to extend, playing a physical limiting role, and preventing the first pipe from being detached from the entire device due to excessive external force.
[0022] 4. The device is also provided with a limiter on the screw rod, which can prevent the screw rod from being separated from the connecting piece by contacting with the connecting piece, thereby further improving safety.
[0023] 5. The device is also provided with a travel switch of the motor, which effectively prevents the motor abnormality from causing the ground screw and the connecting piece to separate or the first pipe and the second pipe to separate, thereby further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the internal structure of the telescopic column device of the utility model.
[0025] Figure 2 It is a structural schematic diagram of the screw rod assembly of the utility model.
[0026] Figure 3 It is a structural schematic diagram of the telescopic column device of the utility model.
[0027] Figure 4 This is a structural exploded view of the screw rod assembly and the first pipe member of the utility model.
[0028] Figure 5 It is a schematic diagram of the connection relationship between the second pipe fitting and the mounting seat of the utility model.
[0029] Figure 6 This is a schematic structural diagram of the second embodiment of the present utility model.
[0030] In the figure, 100, the first pipe fitting; 110, the connecting seat; 200, the second pipe fitting; 210, the travel switch; 300, the screw rod; 310, the limit piece; 400, the connecting piece; 410, the limit sheet metal; 500, the anti-drop limit screw; 600, the limit rod; 610, the limit block; 700, the limit bracket; 710, the limit hole; 720, the first plate; 730, the second plate; 740, the third plate; 800, the mounting seat; 900, the third pipe fitting. DETAILED DESCRIPTION
[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0032] As shown Figures 1-5 in the figure, a telescopic column device with an anti - detachment structure includes: a column assembly, the column assembly includes a first pipe fitting 100 and a second pipe fitting 200, and the first pipe fitting 100 and the second pipe fitting 200 are connected to form a telescopic pipe structure; a lead screw assembly, the lead screw assembly includes a lead screw 300 and a connecting member 400, the connecting member 400 is installed in the first pipe fitting 100 and the connecting member 400 and the first pipe fitting 100 are fixedly connected through an anti - detachment limiting member. In this embodiment, the anti - detachment limiting member is an anti - detachment limiting screw 500; the lead screw 300 is threadedly connected to the connecting member 400; a mounting seat 800, and the second pipe fitting 200 is installed on the mounting seat 800.
[0033] This telescopic column device with an anti - detachment structure aims to solve the safety hazard that the traditional telescopic column structure is prone to detachment when bearing tensile forces at both ends. The core parts of the device include a column assembly, a lead screw assembly and a mounting seat 800. Among them, the column assembly consists of a first pipe fitting 100 and a second pipe fitting 200 to form a telescopic pipe structure, and the lead screw assembly includes a lead screw 300 and a connecting member 400. The connecting member 400 is embedded in the first pipe fitting 100 and fixed to it through an anti - detachment limiting screw 500, ensuring that even in the case of electronic control failure, the lead screw assembly will not easily detach, improving safety and reliability. The mounting seat 800 is used for fixedly connecting with the ceiling, and the end of the second pipe fitting 200 is fixedly connected to the mounting seat 800 to form a fixed part. A motor is arranged in the mounting seat 800, the lead screw 300 is connected to the motor, and the motor can drive the lead screw 300 to rotate, and the lead screw 300 can drive the connecting member 400 and the first pipe fitting 100 to expand and contract.
[0034] In addition to being fixed to the first pipe fitting 100 through conventional snap - on limiting, the connecting member 400 also adds a first anti - detachment limiting screw 500 to enhance the connection strength between the two. Through the above structure, an anti - detachment design is formed inside the lead screw 300 device.
[0035] On the basis of the above - mentioned embodiment, the anti - detachment limiting member is an anti - detachment limiting screw 500; the number of anti - detachment limiting screws 500 is four groups, and the four groups of anti - detachment limiting screws 500 are respectively fixedly connected to the four side surfaces of the connecting member 400.
[0036] The four groups of anti - detachment limiting screws 500 fix the connecting member 400 from the front, back, left and right directions. This design provides uniformly distributed support and fastening force, ensuring that the connecting member 400 and the first pipe fitting 100 are tightly locked, and preventing loosening or detachment caused by uneven single - point stress. Each anti - detachment limiting screw 500 bears a part of the tensile force dispersion, which not only enhances the strength of the connection part, but also reduces the risk of failure of a single connection point due to overload.
[0037] Embodiment 1:
[0038] As Figures 1-4 shown, in this embodiment, a limiting rod 600 and a limiting bracket 700 are further included. The limiting bracket 700 is arranged on the second pipe fitting 200, the limiting rod 600 is arranged on the first pipe fitting 100, the limiting rod 600 is slidably connected with the limiting bracket 700, a limiting block 610 is arranged at the free end of the limiting rod 600, and the limiting block 610 is in limiting cooperation with the limiting bracket 700.
[0039] In addition to the above internal anti-disengagement design, a limiting rod 600 is provided as an external anti-disengagement measure for this device. This limiting rod 600 passes through a limiting hole 710 on the limiting bracket 700 on the outer wall surface of the middle pipe. One end of the limiting rod 600 is fixedly connected or hinged to the first pipe fitting 100, and the other end has a limiting block 610 whose size exceeds that of the limiting hole 710. When the first pipe fitting 100 extends relative to the second pipe fitting 200 to the maximum stroke position, the limiting block 610 will contact the limiting hole 710 of the limiting bracket 700. Since the outer diameter of the limiting block 610 is larger than the inner diameter of the limiting hole 710, when the two come into contact, the limiting block 610 will have a hard contact with the limiting bracket 700, preventing the first pipe fitting 100 from continuing to extend, playing a physical limiting role, and preventing the first pipe fitting 100 from disengaging the entire device due to excessive external force.
[0040] On the basis of the above implementation manner, the limiting bracket 700 is provided with a limiting hole 710, the limiting rod 600 passes through the limiting hole 710, and the two are slidably matched; the outer diameter of the limiting block 610 is larger than the inner diameter of the limiting hole 710; when the first pipe fitting 100 extends relative to the second pipe fitting 200 to the maximum stroke position, the limiting block 610 abuts against the limiting bracket 700 and restricts the movement of the first pipe fitting 100.
[0041] Taking the ceiling installation of this device as an example, when the electronic program fails, the lead screw assembly drops and collides. The second pipe fitting 200 collides with the connecting member 400, and the collision force is borne by the anti-disengagement limiting screw 500 and the limiting sheet metal 410 to prevent it from disengaging; at the same time, when the inner pipe fails and falls off, the limiting rod 600 moves with the first pipe fitting 100 to the maximum stroke position. At this time, the limiting block 610 abuts against and limits the limiting bracket 700 to achieve an external anti-disengagement effect.
[0042] The anti-disengagement structure of this device is jointly composed of two parts, an internal part and an external part. Four groups of anti-disengagement limiting screws 500 fix the connecting member 400 and the first pipe fitting 100 together to form an internal anti-disengagement design. The limiting block 610 at the tail end of the limiting rod 600 and the limiting hole 710 constitute an external anti-disengagement design, making this device not easily disengage when bearing tension.
[0043] On the basis of the above embodiments, a connection base 110 for connecting a display device is provided at the free end of the first pipe fitting 100. The connection base 110 can be lifted and lowered together with the first pipe fitting 100, thereby driving the display device on the connection base 110 to lift and lower. Among them, the display device can be a display screen or a TV.
[0044] Embodiment Two:
[0045] As Figure 6 shown, in this embodiment, a third pipe fitting 900, a limiting rod 600, and a limiting bracket 700 are further included. The third pipe fitting 900 is connected to the first pipe fitting 100 to form a telescopic pipe structure; the limiting bracket 700 is arranged on the first pipe fitting 100, the limiting rod 600 is arranged on the third pipe fitting 900, the limiting rod 600 is slidably connected to the limiting bracket 700, and a limiting block 610 is arranged at the free end of the limiting rod 600, and the limiting block 610 is in limiting cooperation with the limiting bracket 700.
[0046] As Figure 3 , Figure 6 shown, Embodiment Two is similar to Embodiment One. The difference is that Embodiment One is a two-section pipe structure (i.e., the first pipe fitting 100 and the second pipe fitting 200), while Embodiment Two is a three-section pipe structure (i.e., the first pipe fitting 100, the second pipe fitting 200, and the third pipe fitting 900); compared with Embodiment One, in Embodiment Two, the end of the limiting rod 600 is connected to the third pipe fitting 900, and the limiting bracket 700 is installed on the first pipe fitting 100.
[0047] On the basis of the above embodiments, the limiting bracket 700 includes a first plate member 720, a second plate member 730, and a third plate member 740. One side of the second plate member 730 is connected to the first plate member 720, and the other side of the second plate member 730 is connected to the third plate member 740. The side of the first plate body away from the second plate member 730 is connected to the first pipe fitting 100, and the side of the third plate body away from the second plate member 730 is connected to the first pipe fitting 100.
[0048] In this embodiment, both the first plate body and the third plate body are connected to the first pipe fitting 100. The two sides of the second plate body are integrally connected to the first plate body and the third plate body, and the first plate body and the third plate body are both provided with limiting holes 710.
[0049] As Figures 1-4 , Figure 6 shown, on the basis of the above embodiments, a limiting member 310 is provided at the free end of the lead screw 300; when the first pipe fitting 100 extends relative to the second pipe fitting 200 to the maximum stroke position, the limiting member 310 is in abutting connection with the connecting member 400.
[0050] When the first pipe 100 is extended to its maximum stroke, that is, when the relative position between the first pipe 100 and the second pipe 200 reaches the set maximum value, the limiter 310 at the free end of the screw rod 300 will contact the connecting member 400. This contact point is actually a physical barrier that prevents the screw rod 300 from further pushing the connecting member 400, thereby limiting the further extension of the first pipe 100. This design ensures that the telescopic column device will not be damaged due to excessive extension. The contact and cooperation between the limiter 310 and the connecting member 400 is part of the anti-slip structure inside the telescopic column device. It works together with the anti-slip limit screw 500 to prevent the screw rod assembly from slipping out of the column assembly even in the event of electronic control failure, thereby ensuring the safety and reliability of the device.
[0051] like Figures 1-4 As shown, on the basis of the above embodiment, the end surface of the connecting member 400 is fixedly connected with a limiting sheet metal 410 , and the limiting sheet metal 410 is in contact connection with the end surface of the first pipe member 100 .
[0052] The connecting piece 400 is actually two half-shell structures, which are assembled to form the connecting piece 400. The limiting sheet metal 410 is fixedly connected to the upper end faces of the two half-shell structures so that the two half-shell structures are assembled together. This structure can greatly improve the structural strength of the connecting piece 400, and the limiting sheet metal 410 is connected to the end face of the first pipe 100 by abutment. When a collision occurs, the limiting sheet metal 410 can withstand the impact force together.
[0053] On the basis of the above-mentioned embodiment, the overall or partial contour of the limiting sheet metal 410 is larger than the contour of the end face of the first pipe 100. Therefore, the limiting sheet metal 410 can be connected with the end face of the first pipe 100 in abutting manner.
[0054] like Figures 1-5 As shown, on the basis of the above embodiment, a limit switch 210 is installed on the second pipe 200, the contacts of the limit switch 210 extend into the second pipe 200, and the connecting member 400 is provided with a resistance part for resisting the contacts of the limit switch 210; when the resistance part resists the contacts of the limit switch 210, the limit switch 210 is triggered to stop the rotation of the motor.
[0055] A travel switch 210 is added to the outer wall of the second pipe 200, and there is a certain angle between the travel switch 210 and the second pipe 200, so that the contact of the travel switch 210 is obliquely inserted into the second pipe 200. Through the above structure, when the first pipe 100 retracts to the starting position, the limit sheet metal 410 on the connecting member 400 collides with the contact of the travel switch 210, and recognizes this as the initial point, reducing the problems caused by conventional program recognition.
[0056] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.
[0057] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0058] In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0059] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
Claims
1. A telescopic column device with an anti-slip structure, characterized in that: include: A column assembly, the column assembly comprising a first pipe member (100) and a second pipe member (200), the first pipe member (100) and the second pipe member (200) being connected to form a telescopic pipe structure; A screw rod (300) assembly, the screw rod (300) assembly comprising a screw rod (300) and a connecting piece (400), the screw rod (300) being threadedly connected to the connecting piece (400), the connecting piece (400) being installed in the first pipe (100) and the two being fixedly connected via an anti-slip stopper; A mounting seat (800), wherein the second pipe member (200) is mounted on the mounting seat (800).
2. A telescopic column device with an anti-slip structure according to claim 1, characterized in that: The anti-slip limit member is an anti-slip limit screw (500); the number of the anti-slip limit screws (500) is four groups, and the four groups of the anti-slip limit screws (500) are respectively fixedly connected to the four side surfaces of the connecting member (400).
3. A telescopic column device with an anti-slip structure according to claim 2, characterized in that: The invention also comprises a limiting rod (600) and a limiting bracket (700), wherein the limiting bracket (700) is arranged on the second pipe (200), and the limiting rod (600) is arranged on the first pipe (100), the limiting rod (600) is slidably connected with the limiting bracket (700), and a limiting block (610) is arranged at the free end of the limiting rod (600), and the limiting block (610) cooperates with the limiting bracket (700) in limiting manner.
4. A telescopic column device with an anti-slip structure according to claim 2, characterized in that: The invention also comprises a third pipe fitting (900), a limiting rod (600) and a limiting bracket (700); the third pipe fitting (900) is connected to the first pipe fitting (100) to form a telescopic pipe structure; the limiting bracket (700) is arranged on the first pipe fitting (100); the limiting rod (600) is arranged on the third pipe fitting (900); the limiting rod (600) is slidably connected to the limiting bracket (700); a limiting block (610) is provided at the free end of the limiting rod (600); the limiting block (610) and the limiting bracket (700) are limitedly matched.
5. A telescopic column device with an anti-slip structure according to claim 3 or 4, characterized in that: The limiting bracket (700) is provided with a limiting hole (710), and the limiting rod (600) passes through the limiting hole (710); the outer diameter of the limiting block (610) is greater than the inner diameter of the limiting hole (710); when the first pipe (100) is extended to the maximum stroke position relative to the second pipe (200), the limiting block (610) is in contact with the limiting bracket (700) and limits the movement of the first pipe (100).
6. A telescopic column device with an anti-slip structure according to claim 5, characterized in that: The limiting bracket (700) includes a first plate (720), a second plate (730) and a third plate (740), one side of the second plate (730) is connected to the first plate (720), the other side of the second plate (730) is connected to the third plate (740), the side of the first plate (720) away from the second plate (730) is connected to the first pipe (100), and the side of the third plate (740) away from the second plate (730) is connected to the first pipe (100).
7. A telescopic column device with an anti-slip structure according to claim 1, characterized in that: A limit piece (310) is provided at the free end of the screw rod (300); when the first pipe member (100) is extended to a maximum stroke position relative to the second pipe member (200), the limit piece (310) is in contact connection with the connecting member (400).
8. The telescopic column device with an anti-slip structure according to claim 1, characterized in that: The end surface of the connecting member (400) is fixedly connected to a limiting sheet metal (410), and the limiting sheet metal (410) is in contact connection with the end surface of the first pipe member (100).
9. A telescopic column device with an anti-slip structure according to claim 8, characterized in that: The overall or partial outline of the limiting sheet metal (410) is larger than the outline of the end face of the first pipe (100).
10. The telescopic column device with an anti-slip structure according to claim 1, characterized in that: A travel switch (210) is installed on the second pipe (200), and the contact of the travel switch (210) extends into the second pipe (200). The connecting member (400) is provided with a contact portion for contacting the contact of the travel switch (210); when the contact portion contacts the contact of the travel switch (210), the travel switch (210) is triggered to stop the rotation of the motor.