A telescopic device

Abstract

This utility model discloses a telescopic device. The telescopic device includes a base; a drive structure mounted on the base; a primary lifting rod including a primary base and a primary sleeve rod disposed around the periphery of the primary base; a primary transmission structure mounted on the primary base and connected to the output end of the drive structure, the drive structure being able to drive the primary sleeve rod to move vertically via the primary transmission structure; and a guide structure mounted on the base and extending vertically, the primary base being slidably connected to the guide structure and being able to slide along the guide structure in the vertical direction. This utility model proposes a telescopic device with good telescopic stability.

Description

Technical Field

[0001] This utility model relates to the field of telescopic pole technology, and in particular to a telescopic device. Background Technology

[0002] Existing telescopic devices typically guide the lifting and lowering process through two adjacent sleeve rods. However, after prolonged use, wear can easily occur between the adjacent sleeve rods, resulting in insufficient guiding stability and, in severe cases, jamming during lifting and lowering.

[0003] Therefore, there is an urgent need for a telescopic device to solve the above problems. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a telescopic device with good telescopic stability.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A telescopic device, comprising:

[0007] Base;

[0008] The drive structure is mounted on the base;

[0009] A primary lifting rod includes a primary base and a primary sleeve rod disposed around the primary base;

[0010] A primary transmission structure is mounted on the primary base and is connected to the output end of the drive structure. The drive structure can drive the primary sleeve rod to move in the vertical direction through the primary transmission structure.

[0011] A guide structure is mounted on the base and extends vertically. The primary base is slidably connected to the guide structure and can slide along the guide structure in the vertical direction.

[0012] Optionally, the guide structure includes:

[0013] The first guide shaft is vertically disposed within the first-stage sleeve and connected to the base;

[0014] A first ball bearing is mounted on the primary base and sleeved on the outside of the first guide shaft. The first ball bearing is capable of rolling along the first guide shaft in the vertical direction.

[0015] Optionally, the guide structure further includes a first bearing sleeve, which is mounted on the primary base, and the first ball bearing is mounted in the first bearing sleeve.

[0016] Optionally, it also includes a secondary lifting rod and a secondary transmission structure. The secondary lifting rod is sleeved inside the primary sleeve rod. The secondary lifting rod includes a secondary base and a secondary sleeve rod disposed around the secondary base. The secondary transmission structure is mounted on the secondary base and is connected to the output end of the drive structure. The drive structure can drive the secondary sleeve rod to move vertically through the secondary transmission structure.

[0017] Optionally, the guide structure further includes a second ball bearing, which is mounted on the secondary base and sleeved on the outside of the first guide shaft, and the second ball bearing is capable of rolling along the first guide shaft in the vertical direction.

[0018] Optionally, the guide structure further includes a second guide shaft and a second ball bearing. The second guide shaft is disposed within the secondary sleeve along the setting direction and connected to the primary base. The second ball bearing is mounted on the secondary base and sleeved on the outside of the second guide shaft. The second ball bearing is capable of rolling along the second guide shaft in the vertical direction.

[0019] Optionally, it also includes a three-stage lifting rod and a three-stage transmission structure. The three-stage lifting rod is sleeved inside the two-stage sleeve rod. The three-stage lifting rod includes a three-stage base and a three-stage sleeve rod disposed around the three-stage base. The three-stage transmission structure is mounted on the three-stage base and is connected to the output end of the drive structure. The drive structure can drive the three-stage sleeve rod to move in the vertical direction through the three-stage transmission structure.

[0020] Optionally, the guide structure further includes a third ball bearing, which is mounted on the third-stage base and sleeved on the outside of the first guide shaft, and the third ball bearing is capable of rolling along the first guide shaft in the vertical direction.

[0021] Optionally, the guide structure further includes a third guide shaft and a third ball bearing. The third guide shaft is disposed within the third-stage sleeve along the setting direction and connected to the second-stage base. The third ball bearing is mounted on the third-stage base and sleeved on the outside of the third guide shaft. The third ball bearing is capable of rolling along the third guide shaft in the vertical direction.

[0022] Optionally, the drive structure includes a motor, a reduction gear mounted on the output shaft of the motor, and a linear transmission assembly meshing with the reduction gear.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] The telescopic device provided by this utility model includes a base, a drive structure, a lifting rod, a primary transmission structure, and a guide structure. The drive structure is mounted on the base. The primary lifting rod includes a primary base and a primary sleeve rod disposed around the periphery of the primary base. The primary transmission structure is mounted on the primary base and is connected to the output end of the drive structure, enabling the drive structure to drive the primary sleeve rod to move vertically via the primary transmission structure. The guide structure is mounted on the base and extends vertically, with the primary base slidably connected to the guide structure and able to slide vertically along the guide structure. By providing the guide structure, the primary lifting rod can move stably vertically along the guide structure, thereby improving the lifting stability of the primary lifting rod. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the telescopic device provided in a specific embodiment of the present invention when it is in the retracted state (in the retracted state);

[0026] Figure 2 This is an axial cross-sectional view of the assembly structure of the first guide shaft, the first ball bearing, and the first bearing sleeve of the telescopic device provided in a specific embodiment of this utility model.

[0027] Figure 3 This is a radial cross-sectional view of the assembly structure of the first guide shaft, the first ball bearing, and the first bearing sleeve of the telescopic device provided in a specific embodiment of this utility model.

[0028] Figure 4 This is one of the structural schematic diagrams of the telescopic device in the extended state according to a specific embodiment of this utility model;

[0029] Figure 5 This is the second structural schematic diagram of the telescopic device in the extended state according to a specific embodiment of this utility model;

[0030] Figure 6 This is the third structural schematic diagram of the telescopic device provided in the specific embodiment of this utility model when it is in the extended state.

[0031] In the picture:

[0032] 1. Base;

[0033] 2. Reduction gear;

[0034] 3. Sleeve;

[0035] 41. First-stage sleeve; 42. First-stage base;

[0036] 51. Secondary sleeve rod; 52. Secondary base;

[0037] 61. Three-stage sleeve rod; 62. Three-stage base;

[0038] 71. First bearing sleeve; 72. First ball bearing; 73. First guide shaft;

[0039] 81. Second bearing sleeve; 82. Second ball bearing; 83. Second guide shaft;

[0040] 91. Third bearing sleeve; 92. Third ball bearing; 93. Third guide shaft. Detailed Implementation

[0041] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0042] Please refer to Figures 1-4 This utility model provides a telescopic device, including a base 1, a drive structure, a primary lifting rod, a primary transmission structure, and a guide structure. The drive structure is mounted on the base 1. The primary lifting rod includes a primary base 42 and primary sleeve rods 41 disposed around the primary base 42. The primary transmission structure is mounted on the primary base 42 and is connected to the output end of the drive structure, enabling the drive structure to drive the primary sleeve rods 41 to move vertically. The guide structure is mounted on the base 1 and extends vertically, with the primary base 42 slidably connected to the guide structure and able to slide vertically along the guide structure. By providing the guide structure, the primary lifting rod can move stably vertically along the guide structure, thereby improving the lifting stability of the primary lifting rod.

[0043] Optionally, the guide structure includes a first guide shaft 73 and a first ball bearing 72. The first guide shaft 73 is vertically disposed within the first-stage sleeve 41 and connected to the base 1. The first ball bearing 72 is mounted on the first-stage base 42 and sleeved on the outside of the first guide shaft 73. The first ball bearing 72 can roll vertically along the first guide shaft 73, thereby reducing friction and improving guiding smoothness.

[0044] Optionally, the guide structure also includes a first bearing sleeve 71, which is mounted on the primary base 42, and a first ball bearing 72 is mounted in the first bearing sleeve 71.

[0045] Optionally, it also includes a secondary lifting rod and a secondary transmission structure. The secondary lifting rod is sleeved inside the primary sleeve rod 41. The secondary lifting rod includes a secondary base 52 and a secondary sleeve rod 51 disposed around the secondary base 52. The secondary transmission structure is installed on the secondary base 52 and is connected to the output end of the drive structure for transmission. The drive structure can drive the secondary sleeve rod 51 to move in the vertical direction through the secondary transmission structure.

[0046] Optionally, in some embodiments, the guide structure further includes a second ball bearing 82, which is mounted on the secondary base 52 and sleeved on the outside of the first guide shaft 73. The second ball bearing 82 is capable of rolling in the vertical direction along the first guide shaft 73.

[0047] Optionally, such as Figure 5 As shown, in some other embodiments, the guide structure further includes a second guide shaft 83 and a second ball bearing 82. The second guide shaft 83 is disposed in the secondary sleeve 51 along the setting direction and connected to the primary base 42. The second ball bearing 82 is mounted on the secondary base 52 and sleeved on the outside of the second guide shaft 83. The second ball bearing 82 is capable of rolling along the second guide shaft 83 in the vertical direction.

[0048] Optionally, the guide structure also includes a second bearing sleeve 81, which is mounted on the secondary base 52, and a second ball bearing 82 is mounted in the second bearing sleeve 81.

[0049] Optionally, it also includes a three-stage lifting rod and a three-stage transmission structure. The three-stage lifting rod is sleeved inside the two-stage sleeve rod 51. The three-stage lifting rod includes a three-stage base 62 and a three-stage sleeve rod 61 disposed around the three-stage base 62. The three-stage transmission structure is installed on the three-stage base 62 and is connected to the output end of the drive structure for transmission. The drive structure can drive the three-stage sleeve rod 61 to move in the vertical direction through the three-stage transmission structure.

[0050] Optionally, in some embodiments, the guide structure further includes a third ball bearing 92, which is mounted on the third-stage base 62 and sleeved on the outside of the first guide shaft 73, and the third ball bearing 92 is capable of rolling in the vertical direction along the first guide shaft 73.

[0051] Optionally, such as Figure 6 As shown, in some other embodiments, the guide structure also includes a third guide shaft 93 and a third ball bearing 92. The third guide shaft 93 is disposed in the third-stage sleeve 61 along the setting direction and connected to the second-stage base 52. The third ball bearing 92 is mounted on the third-stage base 62 and sleeved on the outside of the third guide shaft 93. The third ball bearing 92 can roll along the third guide shaft 93 in the vertical direction.

[0052] Optionally, the guide structure also includes a third bearing sleeve 91, which is mounted on the third-stage base 62, and a third ball bearing 92 is mounted in the third bearing sleeve 91.

[0053] Optionally, the drive structure includes a motor and a reduction gear 2 mounted on the output shaft of the motor. The primary transmission structure includes a linear transmission assembly meshing with the reduction gear 2. The drive motor drives the primary lifting rod to rise and fall sequentially through the reduction gear 2 and the linear transmission assembly. The linear transmission assembly can be a lead screw and nut pair or a ball spline, both of which are existing technologies, as long as they can achieve the lifting and falling drive of the primary lifting rod.

[0054] Furthermore, the secondary and tertiary transmission structures are identical to the primary transmission structure, and are sequentially connected. This enables the lifting and lowering of the secondary and tertiary lifting rods. When the motor is running, the screw rotates via the reduction gear 2, which in turn drives the primary lifting rod to rise and fall through the primary transmission structure, the secondary lifting rod through the secondary transmission structure, and the tertiary lifting rod through the tertiary transmission structure. This is existing technology (such as the telescopic drive scheme for the lifting rod in Chinese Utility Model Patent No. CN201820395577.0).

[0055] Optionally, it also includes a sleeve 3 mounted on the base 1, the sleeve 3 being fitted onto the outside of the first-stage lifting rod.

[0056] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A telescopic device, characterized in that, include: Base (1); The drive structure is mounted on the base (1); The primary lifting rod includes a primary base (42) and a primary sleeve rod (41) disposed around the primary base (42); A primary transmission structure is installed on the primary base (42) and is connected to the output end of the drive structure. The drive structure can drive the primary sleeve (41) to move in the vertical direction through the primary transmission structure. A guide structure is installed on the base (1) and extends vertically. The primary base (42) is slidably connected to the guide structure and can slide along the guide structure in the vertical direction.

2. The telescopic device according to claim 1, characterized in that, The guiding structure includes: The first guide shaft (73) is arranged vertically inside the first-stage sleeve (41) and connected to the base (1); The first ball bearing (72) is mounted on the first-stage base (42) and sleeved on the outside of the first guide shaft (73). The first ball bearing (72) is capable of rolling in the vertical direction along the first guide shaft (73).

3. The telescopic device according to claim 2, characterized in that, The guide structure also includes a first bearing sleeve (71), which is mounted on the first-stage base (42), and the first ball bearing (72) is mounted in the first bearing sleeve (71).

4. The telescopic device according to claim 2, characterized in that, It also includes a secondary lifting rod and a secondary transmission structure. The secondary lifting rod is sleeved inside the primary sleeve rod (41). The secondary lifting rod includes a secondary base (52) and a secondary sleeve rod (51) disposed around the secondary base (52). The secondary transmission structure is installed on the secondary base (52) and is connected to the output end of the drive structure. The drive structure can drive the secondary sleeve rod (51) to move in the vertical direction through the secondary transmission structure.

5. The telescopic device according to claim 4, characterized in that, The guide structure also includes a second ball bearing (82), which is mounted on the secondary base (52) and sleeved on the outside of the first guide shaft (73). The second ball bearing (82) is capable of rolling in the vertical direction along the first guide shaft (73).

6. The telescopic device according to claim 4, characterized in that, The guide structure also includes a second guide shaft (83) and a second ball bearing (82). The second guide shaft (83) is disposed in the secondary sleeve (51) along the setting direction and connected to the primary base (42). The second ball bearing (82) is mounted on the secondary base (52) and sleeved on the outside of the second guide shaft (83). The second ball bearing (82) is capable of rolling along the second guide shaft (83) in the vertical direction.

7. The telescopic device according to claim 4, characterized in that, It also includes a three-stage lifting rod and a three-stage transmission structure. The three-stage lifting rod is sleeved inside the two-stage sleeve rod (51). The three-stage lifting rod includes a three-stage base (62) and a three-stage sleeve rod (61) disposed around the three-stage base (62). The three-stage transmission structure is installed on the three-stage base (62) and is connected to the output end of the drive structure. The drive structure can drive the three-stage sleeve rod (61) to move in the vertical direction through the three-stage transmission structure.

8. The telescopic device according to claim 7, characterized in that, The guide structure also includes a third ball bearing (92), which is mounted on the third-stage base (62) and sleeved on the outside of the first guide shaft (73). The third ball bearing (92) is capable of rolling vertically along the first guide shaft (73).

9. The telescopic device according to claim 7, characterized in that, The guide structure also includes a third guide shaft (93) and a third ball bearing (92). The third guide shaft (93) is disposed in the third-stage sleeve (61) along the setting direction and connected to the second-stage base (52). The third ball bearing (92) is mounted on the third-stage base (62) and sleeved on the outside of the third guide shaft (93). The third ball bearing (92) is capable of rolling along the third guide shaft (93) in the vertical direction.

10. The telescopic device according to any one of claims 1-9, characterized in that, The drive structure includes a motor, a reduction gear (2) mounted on the output shaft of the motor, and a linear transmission assembly meshing and driving with the reduction gear (2).

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