Small size linear telescopic rod

Abstract

This invention relates to the field of electric telescopic poles, specifically to a small-sized linear telescopic pole, comprising a housing, an internal telescopic pole storage mechanism storing a plurality of telescopic poles connected magnetically, and a friction mechanism for sequentially extending and retracting the telescopic poles installed within the housing, the friction mechanism being located on one side of the telescopic pole storage mechanism. The housing also includes an extension mechanism for sequentially connecting the telescopic poles. This invention solves the problems of small space occupation and long-distance linear extension / retraction.

Description

Technical Field

[0001] This invention relates to the field of electric telescopic poles, and more specifically to a small-sized linear telescopic pole. Background Technology

[0002] Electric telescopic poles offer convenient, quick, and precise height or length adjustment to meet specific application needs. They are widely used in furniture, transportation, automation equipment, camera and lighting systems, agricultural machinery, and other applications requiring electric telescopic poles. The telescopic distance is typically determined by the machine's volume; smaller volumes require shorter distances. This means that longer telescopic distances require larger machine volumes. In some special cases, machines with limited space require telescopic poles with large telescopic ranges, but conventional telescopic poles are too bulky for these requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a small-sized linear telescopic rod to solve the above-mentioned problems. It aims to address the issues of small space volume occupation and long-distance linear telescopic movement by designing an electric telescopic rod that changes the telescopic distance through the opening and closing of telescopic blocks.

[0004] To achieve the above objectives, the present invention provides the following solution: A small-sized linear telescopic rod includes a housing. Inside the housing is a telescopic rod storage mechanism that stores a plurality of telescopic rods. The telescopic rods are magnetically connected to each other. Inside the housing is a friction mechanism that sequentially feeds out and retracts the telescopic rods. The friction mechanism is located on one side of the telescopic rod storage mechanism. Inside the housing is also a feeding mechanism that sequentially connects the telescopic rods.

[0005] Preferably, the telescopic rod storage mechanism includes a slotted wheel rotatably mounted inside the housing, a plurality of telescopic rods slidably disposed inside the slotted wheel, a friction mechanism disposed on one side of the slotted wheel, and a single-step rotation drive mechanism for driving the slotted wheel to rotate is axled to the slotted wheel.

[0006] Preferably, the single-step rotation drive mechanism includes a motor I fixedly connected inside the housing, the motor I having a second bevel gear shaft connected to it, and the slotted wheel having another bevel gear shaft connected to it, meshing with the second bevel gear.

[0007] Preferably, the friction mechanism includes a motor III installed inside the housing, the motor III being drivenly connected to a friction wheel, the friction wheel being in frictional contact with the outer surface of the telescopic rod located at the top; The motor III shaft is connected to a third bevel gear, the third bevel gear meshes with a fourth bevel gear, and the fourth bevel gear is connected to the friction wheel shaft.

[0008] Preferably, the delivery mechanism includes two symmetrically arranged friction roller groups, each friction roller group including several U-shaped rollers, wherein one of the U-shaped rollers in the friction roller group is drivenly connected to a telescopic rod delivery drive component.

[0009] Preferably, the telescopic rod extension drive component includes a motor II installed inside the housing. The motor II is shaft-connected to a drive pulley. Along the extension direction of the telescopic rod, an odd number of U-shaped rollers are shaft-connected to pulleys III, I, and II. The drive pulley is connected to pulley I via belt III, pulley I is connected to pulley II via belt II, and pulley III is connected to the drive pulley via belt I.

[0010] Preferably, the card slot wheel is provided with a plurality of storage slots at equal intervals in the circumferential direction, and the telescopic rod is slidably disposed in the storage slots; The slotted wheel is rotatably connected to the outside of the slotted wheel support shaft, the slotted wheel support shaft is fixedly connected to the housing, and a support disk is fixedly connected to the side of the slotted wheel support shaft near the single-step rotation drive mechanism. The support disk is fixedly connected to the housing, and the diameter of the support disk is not greater than the outer diameter of the slotted wheel. A second sensor is fixedly connected to the support disk, and the position of the second sensor corresponds to the position of the telescopic rod to be sent out. A first sensor is fixedly connected inside the housing, and a mounting rod is fixedly connected to the bottom wall of the housing. The first sensor is mounted on the mounting rod, and the position of the first sensor corresponds to the position of the storage slot of the telescopic rod to be sent out, and is located on the outlet side of the storage slot. The bevel gear shaft is connected to a drive shaft, which passes through the slotted wheel support shaft and is fixedly connected at its end to the slotted wheel.

[0011] Preferably, the storage end of the telescopic rod is embedded with an iron ring, the delivery end of the telescopic rod is embedded with a plurality of permanent magnets, the storage end of the telescopic rod is provided with an insertion slot, and the delivery end of the telescopic rod is fixedly connected with an insertion rod, which is inserted into the corresponding insertion slot.

[0012] Preferably, the slot wheel support shaft is movably provided with a plurality of balls, and the slot wheel support shaft is movably embedded with a plurality of springs, the springs corresponding to and abutting against the balls, and an annular relief groove is formed on the inner side of the slot wheel, with the balls correspondingly located in the annular relief groove.

[0013] The present invention has the following technical effects: This invention uses multiple telescopic rods, which can be stored through a telescopic rod storage mechanism. When the entire telescopic rod system needs to extend, the rods can be released one by one, causing them to extend sequentially. When the entire telescopic rod system needs to shorten, the rods can be retracted one by one, allowing them to slide into the storage slots sequentially. This achieves the telescopic function of the rods in a small space. Compared to ordinary telescopic rods, this invention reduces the size without compromising the telescopic performance of the rods. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention from another perspective; Figure 3 This is an exploded structural diagram of the groove wheel support shaft and groove wheel of the present invention; Figure 4 This is a schematic diagram of the telescopic rod of the present invention.

[0016] The components are as follows: 1. Housing; 2. U-shaped roller; 3. Belt I; 4. Pulley I; 5. Pulley II; 6. Belt II; 7. Slotted wheel; 701. Storage slot; 702. Annular clearance slot; 8. Telescopic rod; 801. Permanent magnet; 802. Iron ring; 803. Insertion rod; 804. Insertion slot; 9. Slotted wheel support shaft; 901. Support disc; 902. Second sensor; 903. Ball bearing; 10. First bevel gear; 11. Motor I; 1101. Second bevel gear; 12. Motor II; 1201. Drive pulley; 13. Motor III; 1301. Third bevel gear; 14. Belt III; 15. Friction wheel; 1501. Fourth bevel gear; 16. Pulley III; 17. First sensor. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Reference Figures 1 to 4 As shown, this embodiment provides a small-sized linear telescopic rod, including a housing 1. The housing 1 has a telescopic rod storage mechanism inside, which stores a plurality of telescopic rods 8. The telescopic rods 8 are magnetically connected to each other. A friction mechanism for sequentially sending out and retrieving the telescopic rods 8 is installed inside the housing 1. The friction mechanism is located on one side of the telescopic rod storage mechanism. A sending mechanism for sequentially connecting the telescopic rods 8 is also installed inside the housing 1.

[0020] This invention uses multiple telescopic rods 8, which can be stored through a telescopic rod storage mechanism. When the entire telescopic rod needs to extend, each telescopic rod 8 can be released one by one, causing multiple telescopic rods 8 to extend sequentially. When the entire telescopic rod needs to shorten, each telescopic rod 8 can be retracted one by one, causing multiple telescopic rods 8 to slide into the telescopic rod storage mechanism sequentially. This achieves the telescopic function of the telescopic rod in a small space. Compared with ordinary telescopic rods, the size is reduced without affecting the telescopic performance of the telescopic rod. Further optimization of the scheme: the telescopic rod storage mechanism includes a slotted wheel 7 rotatably installed in the housing 1, several telescopic rods 8 slidably disposed in the slotted wheel 7, a friction mechanism disposed on one side of the slotted wheel 7, and a single-step rotation drive mechanism for driving the slotted wheel 7 to rotate is connected to the shaft of the slotted wheel 7.

[0021] Further optimization of the scheme: the single-step rotation drive mechanism includes a motor I11 fixedly connected in the housing 1, a second bevel gear 1101 connected to the shaft of the motor I11, and another bevel gear 10 connected to the shaft of the slot wheel 7, which meshes with the second bevel gear 1101.

[0022] In this embodiment, the motor I11 is a servo motor, which can precisely control the rotation angle of the slot wheel 7. The rotation angle of each rotation is the included angle between two adjacent telescopic rods 8. This ensures that each insertion and removal of the telescopic rod 8 can effectively contact the friction mechanism, thereby ensuring the effectiveness of the insertion and removal of the telescopic rod 8.

[0023] The further optimized solution includes a friction mechanism comprising a motor III13 installed inside the housing 1, a friction wheel 15 connected to the motor III13, and the friction wheel 15 making frictional contact with the outer surface of the telescopic rod 8 located at the top. The motor III13 shaft is connected to the third bevel gear 1301, the third bevel gear 1301 meshes with the fourth bevel gear 1501, and the fourth bevel gear 1501 is connected to the friction wheel 15 shaft.

[0024] The friction wheel 15 is positioned corresponding to the telescopic rod 8 to be sent out, which facilitates the sending out and storage of the telescopic rod 8.

[0025] The scheme is further optimized so that the delivery mechanism includes two sets of symmetrically arranged friction roller groups. Each friction roller group includes several U-shaped rollers 2. One set of friction roller groups has a telescopic rod delivery drive component connected to the U-shaped rollers 2.

[0026] Further optimization of the scheme: the telescopic rod delivery drive component includes a motor II12 installed in the housing 1. The motor II12 shaft is connected to a drive pulley 1201. Along the extension direction of the telescopic rod 8, an odd number of U-shaped rollers 2 are connected to pulleys III16, I4, and II5. The drive pulley 1201 and pulley I4 are connected by belt III14. Belt I4 and pulley II5 are connected by belt II6. Belt III16 is connected by belt I3.

[0027] The scheme is further optimized by providing several storage slots 701 evenly spaced around the circumference of the slot wheel 7, and the telescopic rod 8 is slidably disposed in the storage slots 701. The slot wheel 7 is rotatably connected to the outside of the slot wheel support shaft 9, which is fixedly connected to the housing 1. A support disk 901 is fixedly connected to the side of the slot wheel support shaft 9 near the single-step rotation drive mechanism. The support disk 901 is fixedly connected to the housing 1. The diameter of the support disk 901 is not greater than the outer diameter of the slot wheel 7. A second sensor 902 is fixedly connected to the support disk 901. The position of the second sensor 902 corresponds to the position of the telescopic rod 8 to be sent out. A first sensor 17 is fixedly connected inside the housing 1, and a mounting rod is fixedly connected to the bottom wall of the housing 1. The first sensor 17 is mounted on the mounting rod. The position of the first sensor 17 corresponds to the position of the storage slot 701 of the telescopic rod 8 to be sent out, and is located on the outlet side of the storage slot 701. The bevel gear 10 is connected to a drive shaft, which passes through the slotted wheel support shaft 9 and is fixedly connected at its end to the slotted wheel 7.

[0028] In order to enable the slotted wheel 7 to rotate effectively relative to the slotted wheel support shaft 9, a circular clearance space (not shown in the diagram) is provided on the slotted wheel 7 to provide clearance for the support disc 901. The second sensor 902 is used to detect whether the telescopic rod 8 is stored in the storage slot 701 corresponding to the telescopic rod 8, and also to detect whether the telescopic rod 8 is stored in place. Based on this, the second sensor 902 can be a distance sensor, which is existing technology. The function of the first sensor 17 is to detect whether the individual telescopic rod 8 is sent out to the appropriate position during the entire telescopic rod extension process to prevent other telescopic rods 8 from colliding with the sent telescopic rod during the rotation of the slotted wheel 7.

[0029] The design is further optimized by embedding an iron ring 802 at the storage end of the telescopic rod 8, embedding several permanent magnets 801 at the delivery end of the telescopic rod 8, opening an insertion slot 804 at the storage end of the telescopic rod 8, and fixing an insertion rod 803 to the delivery end of the telescopic rod 8, which is then inserted into the corresponding insertion slot 804.

[0030] The combination of the iron ring 802 and the permanent magnet 801 can make two coaxial adjacent telescopic rods 8 attract together.

[0031] In a further optimized design, the slot wheel support shaft 9 is movably provided with several balls 903, and the slot wheel support shaft 9 is movably embedded with several springs (not shown in the figure). The springs correspond to and abut against the balls 903. The inner side of the slot wheel 7 is provided with an annular clearance groove 702, and the balls 903 are located in the annular clearance groove 702.

[0032] By configuring the ball bearing 903 in conjunction with the spring, the ball bearing 903 can press against the telescopic rod 8, allowing the telescopic rod 8 to effectively contact the friction wheel 15, making the process of extending and retracting the telescopic rod 8 by the friction wheel 15 more effective.

[0033] The specific working process of this invention is as follows: Motors I11, II12, III13, the first sensor 17, and the second sensor 902 are all connected to the controller. In this embodiment, the controller can be a PLC controller.

[0034] Initially, all the telescopic rods 8 are stored in the retaining wheels 7. The second sensor 902 detects that the retaining wheels 7 have rotated to a suitable angle. At this point, the controller stops motor I11 and then controls motor III13 to rotate, driving friction wheel 15 to rotate. Friction wheel 15 sends the telescopic rods 8 out into the U-shaped roller 2. After sensor 17 detects the telescopic rods, the controller controls motors III13 and II12 to rotate simultaneously, using friction wheel 15 and U-shaped roller 2 to continue sending the telescopic rods 8 out. When the first sensor 17 no longer detects the telescopic rods 8, motors III13 and II12 stop rotating. The controller then controls motor I11 to rotate a predetermined angle until sensor 902 senses the telescopic rods 8. If no rod is detected, rotation continues until a rod is detected. The next telescopic rod 8 to be sent out is sent to the position of the friction wheel 15. The friction wheel 15 is used to send out the next telescopic rod 8. This process is repeated until the sensor 17 can no longer detect the last telescopic rod 8. Then the motors 12 and 13 stop, completing the extension action of the telescopic rod. The axial connection between multiple telescopic rods 8 is achieved by using a concave-convex structure and a permanent magnet 801 and an iron ring 802 for attraction. During retraction, motor 11 rotates the slot wheel 7 until sensor 902 detects that there is no telescopic rod in the storage slot. If no telescopic rod is detected immediately, the slot wheel does not rotate. The controller first controls motor II 12 to rotate, retracting the telescopic rod in the symmetrically arranged U-shaped rollers 2 towards the slot wheel. After sensor 17 senses the telescopic rod, motor 13 drives the friction wheel to rotate. After the telescopic rod enters the slot, the friction wheel retracts it. When sensor 902 detects that the telescopic rod is a certain distance from the bottom of the storage slot 701 (this distance is ≥ the length of the protruding part), motor 12 stops rotating. At this time, the friction wheel separates the telescopic rod that has been attracted together. Motor 13 stops working when sensor 902 detects that the telescopic rod has been fully returned to its position. When motor 11 rotates the slot wheel 7 at a certain angle and sensor 17 senses that there is no telescopic rod in the storage slot (as above, these two conditions must be met simultaneously; if a telescopic rod is detected, rotation continues), the above actions are repeated until the last telescopic rod is returned to its position.

[0035] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A small-sized linear telescopic rod, characterized in that, Includes a housing (1), inside which is provided a telescopic rod storage mechanism, which stores a plurality of telescopic rods (8), which are magnetically connected to each other. Inside the housing (1) is installed a friction mechanism for sequentially sending out and retrieving the telescopic rods (8), which is located on one side of the telescopic rod storage mechanism. Inside the housing (1) is also installed a sending mechanism for sequentially connecting the telescopic rods (8).

2. The small-sized linear telescopic rod according to claim 1, characterized in that, The telescopic rod storage mechanism includes a slotted wheel (7) rotatably installed in the housing (1), a plurality of telescopic rods (8) slidably disposed in the slotted wheel (7), a friction mechanism disposed on one side of the slotted wheel (7), and a single-step rotation drive mechanism for driving the slotted wheel (7) to rotate is axially connected to the slotted wheel (7).

3. A small-sized linear telescopic rod according to claim 2, characterized in that, The single-step rotation drive mechanism includes a motor I (11) fixedly connected in the housing (1), the motor I (11) is shaft-connected to a second bevel gear (1101), and the slot wheel (7) is shaft-connected to another bevel gear (10), which meshes with the second bevel gear (1101).

4. A small-sized linear telescopic rod according to claim 2, characterized in that, The friction mechanism includes a motor III (13) installed in the housing (1), the motor III (13) being drivenly connected to a friction wheel (15), the friction wheel (15) being in frictional contact with the outer surface of the telescopic rod (8) located at the top; The motor III (13) is shaft-connected to a third bevel gear (1301), which meshes with a fourth bevel gear (1501), and the fourth bevel gear (1501) is shaft-connected to the friction wheel (15).

5. A small-sized linear telescopic rod according to claim 1, characterized in that, The delivery mechanism includes two sets of symmetrically arranged friction roller groups, each set of friction roller groups including several U-shaped rollers (2), wherein one set of friction roller groups has a telescopic rod delivery drive component connected to the U-shaped rollers (2).

6. A small-sized linear telescopic rod according to claim 5, characterized in that, The telescopic rod delivery drive component includes a motor II (12) installed in the housing (1). The motor II (12) is shaft-connected to a drive pulley (1201). Along the extension direction of the telescopic rod (8), the odd number of U-shaped rollers (2) are shaft-connected to pulleys III (16), I (4), and II (5). The drive pulley (1201) and pulley I (4) are connected by belt III (14). The pulley I (4) and pulley II (5) are connected by belt II (6). The pulley III (16) and pulley II (5) are connected by belt I (3).

7. A small-sized linear telescopic rod according to claim 3, characterized in that, The slotted wheel (7) has several storage slots (701) evenly spaced around the circumference, and the telescopic rod (8) is slidably disposed in the storage slots (701); The slot wheel (7) is rotatably connected to the outside of the slot wheel support shaft (9). The slot wheel support shaft (9) is fixedly connected inside the housing (1). A support disc (901) is fixedly connected to the side of the slot wheel support shaft (9) near the single-step rotation drive mechanism. The support disc (901) is fixedly connected to the housing (1). The diameter of the support disc (901) is not greater than the outer diameter of the slot wheel (7). A second sensor (902) is fixedly connected to the support disc (901). The position of the second sensor (902) corresponds to the position of the telescopic rod (8) to be sent out. A first sensor (17) is fixedly connected inside the housing (1), and an installation rod is fixedly connected to the bottom wall of the housing (1). The first sensor (17) is installed on the installation rod. The position of the first sensor (17) corresponds to the position of the storage slot (701) from which the telescopic rod (8) is to be sent out, and is located on the outlet side of the storage slot (701). The bevel gear (10) is connected to a drive shaft, which passes through the slot wheel support shaft (9) and its end is fixedly connected to the slot wheel (7).

8. A small-sized linear telescopic rod according to claim 1, characterized in that, The telescopic rod (8) has an iron ring (802) embedded in its storage end and a number of permanent magnets (801) embedded in its delivery end. The telescopic rod (8) has an insertion slot (804) opened in its storage end and an insertion rod (803) fixedly connected to its delivery end. The insertion rod (803) is inserted into the corresponding insertion slot (804).

9. A small-sized linear telescopic rod according to claim 2, characterized in that, The slot wheel support shaft (9) is movably provided with a number of balls (903), and the slot wheel support shaft (9) is movably embedded with a number of springs. The springs correspond to and abut against the balls (903). The slot wheel (7) has an annular relief groove (702) on its inner side, and the balls (903) are located in the annular relief groove (702).

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