Telescopic supporting rod, ironing board and garment steamer

Abstract

The invention discloses a telescopic supporting rod, an ironing board and a garment steamer, belongs to the ironing equipment technology, and aims to solve the problem that an existing telescopic rod locking mechanism cannot achieve reliable locking and rapid locking or unlocking at the same time. The inner sleeve is positioned at the upper end part of the second rod and is positioned between the first rod and the second rod; the hoop assembly comprises a hoop ring which is hooped or loosened through the handle, and the hoop ring is located at the upper end of the second rod, at least partially sleeves the inner sleeve and is used for hooping the inner sleeve on the outer wall of the first rod or loosening the inner sleeve from the outer wall of the first rod. The hoop ring is rapidly hooped or loosened through the handle, and the inner sleeve is hooped on the outer wall of the first rod through the hoop ring to achieve reliable locking. Compared with a nut-shaped connector in the prior art, the hoop ring can be quickly hooped or loosened through the handle. Compared with a pressing block in the prior art, the inner sleeve can tighten the first rod under the hooping effect of the hoop ring, the first rod is tightly clasped from the periphery, and reliable locking is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of ironing equipment, and in particular relates to a telescopic support rod, an ironing board and a garment steamer. Background Art

[0002] The telescopic support rod is used to support the board body or clothes rack to form an ironing board or a garment steamer. The length of the telescopic support rod can be adjusted by extending and retracting the telescopic support rod.

[0003] Patent document CN203627453U discloses a telescopic rod, which includes at least two telescopically connected unit tubes, the unit tubes being locked together by a locking mechanism, the locking mechanism including a locking seat, the locking seat including a sleeve portion nested in the front end of the unit tube, the front end side wall of the unit tube being provided with a notch, the sleeve portion being provided with a through hole corresponding to the notch, a pressing block being provided in the through hole, the sleeve portion being hinged to a buckle on the circumferential side, the buckle including a handle portion and a pressing portion provided at the head end of the handle portion, the pressing portion being hinged to the outside of the pressing block, the pressing portion having an arc-shaped cross section, and the hinge point of the pressing portion being located at an eccentric position of the pressing portion cross section. In the locking mechanism of this telescopic rod, the pressing block only locally compresses, the two telescopically connected unit tubes are prone to shaking, and the locking is unreliable. Moreover, when the pressing block is applied to the unit tube with a large extrusion force in order to ensure reliable locking, the local force applied to the unit tube by the compressed unit tube is too large, causing deformation.

[0004] Patent document CN 210368383 U discloses a telescopic rod and a garment steamer equipped with the same. The telescopic rod comprises: a first rod; a second rod, the first rod movably inserted into the second rod; a sleeve, which is mounted on and fixed to the second rod, and includes a locking portion located outside the first rod; a joint, which is movably mounted outside the sleeve and can drive the locking portion when the joint is moved, so that the locking portion has a locked position and an unlocked position; and a limiter, which is disposed on the joint and located below the sleeve and can limit the displacement of the limiter along the axis of the second rod. The telescopic rod is locked or unlocked by twisting a nut-shaped joint, but twisting the joint often requires multiple twists, which is not conducive to quick locking or unlocking. Summary of the Invention

[0005] The present invention addresses the defect that the existing telescopic rod locking mechanism cannot achieve both reliable locking and quick locking or unlocking. It provides a telescopic support rod, an ironing board and a garment steamer, which are used to quickly tighten or loosen the hoop through the handle and tighten the inner sleeve to the outer wall of the first rod through the hoop to achieve reliable locking.

[0006] To achieve the above-mentioned object, the telescopic support rod of the present invention comprises: First shot; a second rod, which is tubular and fits outside the first rod; an inner sleeve positioned at an upper end portion of the second rod and between the first rod and the second rod; The clamp assembly includes a clamp that is tightened or loosened by a handle. The clamp is positioned at the upper end of the second rod and at least partially sleeved outside the inner sleeve for tightening the inner sleeve to the outer wall of the first rod or loosening the inner sleeve from the outer wall of the first rod.

[0007] The telescopic support rod is used to upright support the structure above it. When the hoop is loosened by the handle, the first rod can be extended and retracted relative to the second rod to adjust the length of the entire telescopic support rod. Therefore, it is necessary to quickly tighten or loosen the hoop and achieve reliable locking. In the above solution, the hoop is quickly tightened or loosened by the handle, and the inner sleeve is tightened to the outer wall of the first rod by the hoop to achieve reliable locking. Compared with the nut-shaped joint of the prior art, the hoop can be quickly tightened or loosened by the handle. Compared with the clamping block of the prior art, the inner sleeve can tighten the first rod under the tightening action of the hoop, tightly hugging the first rod from all sides and reliably locking it.

[0008] Preferably, a clamping hole is provided on the wall of the upper end of the second rod, and the inner sleeve has an elastic protrusion, which is clamped in the clamping hole to position the inner sleeve on the upper end of the second rod. In this way, the inner sleeve is positioned on the upper end of the second rod and does not move when the first rod is extended or retracted.

[0009] Preferably, the inner sleeve has elastic legs, and the elastic protrusion is provided on the elastic legs. The elastic protrusion can be smoothly clamped into the clamping hole through the elastic deformation of the elastic legs.

[0010] Preferably, the inner sleeve has a longitudinal fracture. When tightened by the hoop, the inner sleeve extends toward the longitudinal fracture, ensuring that the inner sleeve can tighten the first rod under the tightening action of the hoop, so that every part of the inner sleeve can tightly embrace the first rod from all sides of the first rod and reliably lock it. In addition, when the hoop releases the inner sleeve, the inner sleeve can reset, allowing the first rod to smoothly extend and retract relative to the second rod. In contrast, if the inner sleeve does not have this longitudinal fracture and instead presents a closed sleeve or ring shape, then under the tightening action of the hoop, the inner sleeve will be squeezed into a wavy or wrinkled shape at least in part, and the inner sleeve can only tighten the first rod in part, resulting in poor locking reliability. Moreover, after being squeezed into a wavy or wrinkled shape, the inner sleeve is difficult to reset, which will cause the first rod to encounter greater resistance and become unsmooth when extending and retracting relative to the second rod.

[0011] Preferably, the upper end of the second rod is provided with a notch, and the hoop is fitted over the upper end of the second rod and abuts the inner sleeve at the notch. Due to the notch, the upper end of the second rod also exerts a tightening effect when the hoop tightens the inner sleeve. This structure allows the hoop to tighten the inner sleeve while also tightening the upper end of the second rod. Thus, at the notch, the hoop tightens the inner sleeve, which in turn tightens the first rod. Meanwhile, at the upper end of the second rod outside the notch, the hoop tightens the upper end of the second rod, which in turn tightens the inner sleeve, which in turn tightens the first rod. This achieves greater tightening reliability.

[0012] Preferably, the hoop is located at the bottom surface of the notch, thereby ensuring that the notch is shielded and the regularity of the notch is ensured.

[0013] Preferably, the inner wall of the hoop has a protrusion protruding toward the notch for tightening the inner sleeve, and the hoop is seated on the bottom surface of the notch via the protrusion. This structure not only enables the hoop to tighten the inner sleeve, but also ensures that the structure at the notch is substantial, so as not to form a cavity structure and reduce strength.

[0014] Preferably, the upper end surface of the protrusion is flush with the upper end surface of the second rod, the upper end surface of the hoop is higher than the upper end surface of the protrusion and the upper end surface of the second rod and maintains a first gap with the first rod, and the upper end of the inner sleeve has a thickened portion, which fills the first gap. Accordingly, the inner sleeve and the hoop overlap in the length direction and form mutual support, thereby ensuring structural strength.

[0015] Preferably, the side of the protrusion and the side of the notch maintain a second gap. When the hoop is tightened, deformation space is reserved for the tightening of the second rod upper end.

[0016] Preferably, the inner sleeve upper end is provided with an outer flange, and the hoop upper end face is positioned against the outer flange. Accordingly, the hoop lower end is located on the bottom surface of the notch and is limited, and the hoop upper end face is positioned against the outer flange, thereby positioning the hoop on the second rod upper end.

[0017] Preferably, the clamp assembly includes a pull rod, and the clamp has a first arm and a second arm facing each other. The pull rod is inserted through the first arm and the second arm, with one end of the pull rod abutting against the first arm and the other end of the pull rod connected to a handle. The handle is provided with a cam portion, which presses against the second arm to tighten or loosen the clamp via the pull rod when the handle is flipped. Accordingly, the clamp can be quickly tightened or loosened by flipping the handle.

[0018] Preferably, the first rod has a groove extending along its length, the inner sleeve has a longitudinal fracture and bent portions located on either side of the longitudinal fracture, the bent portions being in contact with the groove, and the first arm and the second arm having pressing portions that are in contact with the bent portions. When the hoop is tightened, the first arm and the second arm move closer together, and the pressing portions press the bent portions into the groove, thereby pulling the inner sleeve, allowing the inner sleeve to better fit the first rod and securely hold the first rod.

[0019] Preferably, the lower end of the first rod is located inside the second rod and is provided with a first plug, the first plug resting on the inner wall of the second rod via the elastic portion, and the first plug is blocked by the inner sleeve to confine the lower end of the first rod within the tube of the second rod, thereby preventing the first rod from being pulled out of the second rod.

[0020] Preferably, a second plug is configured at the lower end of the second rod.

[0021] Preferably, the telescopic support rod further includes a third rod, which is tubular and extends outside the second rod. The inner sleeve and clamp assembly are disposed between the second and third rods. The inner sleeve is positioned at the upper end of the third rod and is located between the second and third rods. The clamp is positioned at the upper end of the third rod and at least partially extends outside the inner sleeve, thereby tightening the inner sleeve against the outer wall of the second rod or loosening the inner sleeve from the outer wall of the second rod. Accordingly, the length of the telescopic support rod can be increased as needed.

[0022] The ironing board of the present invention comprises: The telescopic support rod of the present invention; The plate body is directly or indirectly supported on the upper end of the telescopic support rod.

[0023] The garment steamer of the present invention comprises: Host; The telescopic support rod of the present invention; The plate body or the clothes hanger is directly or indirectly supported on the upper end of the telescopic support rod.

[0024] The present invention employs an inner sleeve and a clamp assembly for a first rod and a second rod that are nested together. The inner sleeve is positioned at the upper end of the second rod and positioned between the first and second rods. The clamp assembly includes a clamp that is tightened or loosened using a handle. The clamp is positioned at the upper end of the second rod and at least partially extends over the inner sleeve, allowing the inner sleeve to be tightened or loosened from the outer wall of the first rod. The clamp can be quickly tightened or loosened using the handle, and the inner sleeve is securely locked to the outer wall of the first rod using the clamp. Compared to the nut-like joints of the prior art, the clamp can be tightened or loosened quickly using the handle. Compared to the compression block of the prior art, the inner sleeve, under the tightening action of the clamp, can tighten the first rod, tightly encircling it and reliably locking it. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A partial schematic diagram of the telescopic support rod of the present invention from one perspective; Figure 2 for Figure 1 A schematic diagram of the telescopic support rod from another perspective; Figure 3 for Figure 1-2 A schematic orthographic projection of the telescopic support rod from one viewing angle is shown; Figure 4 for Figure 3 AA-direction cross-section enlarged schematic diagram; Figure 5 for Figure 3 BB-direction cross-section enlarged schematic diagram; Figure 6 for Figure 3 Schematic diagram of CC section; Figure 7 for Figure 6 DD-direction cross-sectional diagram; Figure 8 for Figure 1 A schematic diagram of the structure of the telescopic support rod from the perspective shown; Figure 9 for Figure 2 A schematic diagram of the structure of the telescopic support rod from the perspective shown; Figure 10 is a schematic diagram of a garment steamer according to an embodiment of the present invention; Figure 11 is a schematic diagram of a garment steamer according to another embodiment of the present invention; Description of the numbers in the figure: 100 first rod, 101 groove, 102 first plug, 103 elastic portion; 200 second rod, 201 upper end portion of the second rod, 202 mounting hole, 203 notch, 204 bottom surface, 205 upper end surface of the second rod, 206 inner wall of the second rod, 207 second plug, 208 side surface of the notch; 300 inner sleeve, 301 elastic protrusion, 302 elastic leg, 303 longitudinal fracture, 304 thickened portion, 305 outer flange, 306 bent portion; 400 clamp assembly, 410 handle, 411 cam part, 420 hoop, 421 protrusion, 422 protrusion upper end surface, 423 hoop upper end surface, 424 first gap, 425 second gap, 426 first arm, 427 second arm, 428 extrusion portion, 429 protrusion side, 430 tie rod, 431 head; 10 telescopic support rod; 20 plate body; 30 main unit, 31 steam pipe, 32 ironing machine; 40 hangers; 50 bases. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] The terms "including" and "having" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusions. For example, a method or product that includes a series of technical features is not necessarily limited to those technical features clearly listed, and may also include other technical features that are not clearly listed and can be included in the method or product.

[0028] In the description of the present invention, it should be understood that the technical features defined by the terms "first", "second", etc., which have sequential concepts, are only used to clearly describe the defined technical features so that the defined technical features can be clearly distinguished from other technical features, and do not represent such naming in actual implementation. Therefore, it cannot be understood as a limitation on the present invention.

[0029] The present invention is described in detail below with reference to specific embodiments and accompanying drawings.

[0030] like Figure 1-9 As shown, the telescopic support rod includes a first rod 100 , a second rod 200 , an inner sleeve 300 and a hoop assembly 400 .

[0031] The first rod 100 is tubular. In other embodiments, it can also be a solid rod.

[0032] The second rod 200 is tubular and is sleeved outside the first rod 100, so that the first rod and the second rod can be relatively telescopic to adjust the length of the entire telescopic support rod.

[0033] The inner sleeve 300 is positioned at the second rod upper end 201 and is located between the first rod 100 and the second rod 200. Therefore, the position of the inner sleeve relative to the second rod upper end is fixed. Wherein, the second rod upper end is a section of the second rod upper end.

[0034] The clamp assembly 400 includes a clamp 420 that is tightened or loosened by a handle 410. The clamp 420 is positioned at the upper end 201 of the second rod and is fixed relative to the upper end 201 of the second rod. Furthermore, the clamp 420 is at least partially positioned outside the inner sleeve 300 to tighten the inner sleeve against the outer wall of the first rod or loosen the inner sleeve from the outer wall of the first rod.

[0035] In the illustrated structure, the clamp assembly 400 also includes a pull rod 430. The clamp 420 has a first arm 426 and a second arm 427 that oppose each other. The pull rod 430 is disposed through the first arm 426 and the second arm 427. One end of the pull rod 430 abuts against the first arm 426 via a head 431. The other end of the pull rod 430 is connected to the handle 410. The handle 410 is provided with a cam portion 411. The cam portion 411 presses against the second arm 427 to tighten or loosen the clamp when the handle is flipped. Thus, the clamp can be quickly tightened or loosened by flipping the handle.

[0036] In other embodiments, one end of the handle can be rotatably connected to the second arm via a pin, and a collar that covers the first arm is connected to the middle of the handle, and the collar can also be tightened or loosened by flipping the handle.

[0037] The telescopic support rod is used to upright support the structure above it. When the hoop is loosened by the handle, the first rod can be extended and retracted relative to the second rod to adjust the length of the entire telescopic support rod. Therefore, it is necessary to quickly tighten or loosen the hoop and achieve reliable locking. In the above solution, the hoop is quickly tightened or loosened by the handle, and the inner sleeve is tightened to the outer wall of the first rod by the hoop to achieve reliable locking. Compared with the nut-shaped joint of the prior art, the hoop can be quickly tightened or loosened by the handle. Compared with the clamping block of the prior art, the inner sleeve can tighten the first rod under the tightening action of the hoop, tightly hugging the first rod from all sides and reliably locking it.

[0038] like Figure 8-9 As shown, the wall of the second rod upper end 201 is provided with a clamping hole 202, and the inner sleeve 300 has an elastic protrusion 301. The elastic protrusion 301 is as shown in FIG. Figure 6 The inner sleeve 300 is positioned in the mounting hole 202, preventing movement of the inner sleeve during extension and retraction of the first rod. Specifically, the inner sleeve 300 includes elastic legs 302, with elastic protrusions 301 disposed on the elastic legs 302. The elastic deformation of the elastic legs 302 allows the elastic protrusions 301 to be smoothly mounted in the mounting hole 202.

[0039] like Figure 8-9As shown, the inner sleeve 300 has a longitudinal fracture 303. When tightened by the hoop, the inner sleeve extends toward the longitudinal fracture, ensuring that the inner sleeve can tighten the first rod under the tightening action of the hoop, allowing every part of the inner sleeve to tightly embrace the first rod from all sides, reliably locking it. Furthermore, when the hoop releases the inner sleeve, the inner sleeve can reset, allowing the first rod to smoothly extend and retract relative to the second rod. In contrast, if the inner sleeve does not have this longitudinal fracture and instead presents a closed sleeve or ring shape, the inner sleeve will be squeezed into a wavy or wrinkled shape under the tightening action of the hoop, and the inner sleeve can only partially tighten the first rod, resulting in poor locking reliability. Moreover, after being squeezed into a wavy or wrinkled shape, the inner sleeve is difficult to reset, which will cause the first rod to encounter greater resistance and become unsmooth when extending and retracting relative to the second rod.

[0040] like Figure 8-9 As shown, the second rod upper end 201 is provided with a notch 203. The hoop 420 is fitted over the second rod upper end 201 and abuts the inner sleeve 300 at the notch. Due to the notch 203, the second rod upper end 201 also acts as a clamp when the hoop is tightened. This allows the hoop to tighten the inner sleeve while also tightening the second rod upper end. Thus, at the notch, the hoop 420 tightens the inner sleeve 300, which in turn tightens the first rod 100. Meanwhile, outside the notch, the hoop 420 tightens the second rod upper end 201, which in turn tightens the inner sleeve 300, which in turn tightens the first rod 100. This achieves greater tightening reliability.

[0041] like Figure 7 As shown, the hoop 420 is located on the bottom surface 204 of the gap. This ensures that the gap is shielded and the regularity of the gap is ensured. Figure 8-9 As shown, the inner wall of the hoop 420 has a protrusion 411 protruding toward the notch for tightening the inner sleeve, and the hoop 420 is located on the bottom surface 204 of the notch via the protrusion 411. This structure not only enables the hoop to tighten the inner sleeve, but also ensures that the structure at the notch is substantial, so as not to form a cavity structure and reduce strength.

[0042] like Figure 6-7 As shown, the upper end surface 422 of the protrusion is flush with the upper end surface 205 of the second rod, the upper end surface 423 of the hoop is higher than the upper end surface 422 of the protrusion and the upper end surface 205 of the second rod, and maintains a first gap 424 with the first rod 100. The upper end of the inner sleeve 300 has a thickened portion 304, which fills the first gap 424. Accordingly, the inner sleeve and the hoop overlap in the length direction and form mutual support, thereby ensuring the structural strength of the structure.

[0043] like Figure 4-5 As shown, the side edge 429 of the protrusion maintains a second gap 425 with the side surface 208 of the notch. When the hoop is tightened, deformation space is left for the deformation and tightening of the upper end portion of the second rod.

[0044] like Figure 6-7 As shown, the upper end of the inner sleeve 300 is provided with an outer flange 305, and the hoop upper end surface 423 is positioned against the outer flange 305. Accordingly, the hoop lower end is positioned on the bottom surface of the notch, and the hoop upper end surface is positioned against the outer flange, thereby positioning the hoop on the second rod upper end.

[0045] like Figure 8 As shown, the first rod 100 has a groove 101 extending along its length. The inner sleeve 300 has a longitudinal fracture 303 and bends 306 on either side of the longitudinal fracture. The bends 306 mate with the groove 101. The first and second arms have extrusions 428 that mate with the bends 306. When the hoop is tightened, the first and second arms move closer together, and the extrusions 428 squeeze the bends 306 into the groove 101, pulling the inner sleeve and allowing it to better fit and hold the first rod. Similarly, the second rod also has a groove extending along its length. This prevents the first and second rods from rotating relative to each other, allowing them to adjust their lengths telescopically.

[0046] like Figure 8-9 As shown, the lower end of the first rod 100 is located inside the second rod 200 and is provided with a first plug 102. The first plug 102 rests on the inner wall 206 of the second rod via the elastic portion 103, preventing the lower end of the first rod from shaking inside the second rod, preventing friction noise caused by contact between the first rod and the second rod made of a metal tube (such as an aluminum tube), and maintaining appropriate damping when the first rod and the second rod are relatively extended. Figure 6-7 As shown, the first plug 102 is blocked by the inner sleeve 300 to restrict the lower end of the first rod within the tube of the second rod, thereby preventing the first rod from being pulled out of the second rod.

[0047] like Figure 8-9 As shown, a second plug 207 is configured at the lower end of the second rod 200 .

[0048] The telescopic support rod with the above structure is also easy to assemble: Place the hoop 420 of the hoop assembly 400 on the bottom surface 204 of the notch and insert it into the upper end 201 of the second rod, then press the inner sleeve 300 downward from the hoop 420 until the elastic protrusion 301 is clamped in the clamping hole 202. Figure 6-7 As shown, the inner sleeve 300 and the clamp assembly 400 are positioned on the upper end portion 201 of the second rod; Clamp the first plug 102 onto the lower end of the first rod 100, and insert the upper end of the first rod 100 upward from the lower end of the second rod 200 into the lumen of the second rod and out of the inner sleeve 300. The first plug 102 is located in the lumen of the first rod; Finally, the second plug 207 is installed on the lower end of the second rod 200.

[0049] To extend the length of the telescopic support rod as needed, the telescopic support rod also includes a third rod. The third rod is tubular and extends outside the second rod. The inner sleeve and clamping hoop assembly are positioned between the second and third rods. The inner sleeve is positioned at the upper end of the third rod and is located between the second and third rods. The hoop is positioned at the upper end of the third rod and at least partially extends outside the inner sleeve, used to tighten the inner sleeve against the outer wall of the second rod or loosen the inner sleeve from the outer wall of the second rod. Furthermore, the structure used to lock and unlock the first and second rods via the inner sleeve and clamping hoop assembly also applies to the second and third rods. Because the second rod has a larger cross-sectional profile than the first rod, and the third rod has a larger cross-sectional profile than the second rod, the specifications of the inner sleeve and clamping hoop assembly for the second and third rods are larger.

[0050] While the above description and illustrations illustrate a positional relationship where the second rod is at the bottom and the first rod is at the top, this is merely for illustrative purposes and is not intended to be limiting in actual use. This means that the first rod is positioned at the bottom and the second rod is positioned at the top. When the telescopic support rod includes a third rod, the entire support rod can also be arranged in a bottom-up arrangement with the first rod, second rod, and third rod, as needed.

[0051] Figure 1-9 The telescopic support rod 10 shown can be Figure 10-11 The ironing board is formed by supporting a plate body 20, wherein the plate body 20 is directly or indirectly supported on the upper end of the telescopic support rod 10. In particular, the plate body 20 can change the tilt angle as needed, and the height of the plate body can be adjusted by adjusting the length of the telescopic support rod.

[0052] Figure 1-9 The telescopic support rod shown can be Figure 10-11 The device shown is used to support a plate 20 or a hanger 40 to form a garment steamer, wherein the plate 20 or the hanger 40 is directly or indirectly supported by the upper end of the telescopic support rod 10. The garment steamer includes a main unit 30, which generates steam and transmits it to an ironing head 32 via a steam pipe 31. The steam is released from the ironing head 32 and is used to iron clothes hung on the hanger 40 or placed on the plate 20.

[0053] exist Figure 10 In the embodiment, the telescopic support rod 10 is one, so it is relatively thick and strong, and is used to maintain sufficient support force and bending resistance. Figure 11 In the embodiment, there are two telescopic support rods 10, and the telescopic support rods 10 can be appropriately thinned. In order to maintain stability, Figure 10 The base 50 is provided in the middle, the main unit 30 is located on the base 50, and the lower end of the telescopic support rod 10 is assembled on the base 50. Figure 11 In the embodiment, the lower end of the telescopic support rod 10 is assembled on the main unit 30. Figure 11The steam pipe 31 and the ironing head 32 are omitted.

Claims

1. Telescopic support rod, characterized by include: First shot (100); a second rod (200) which is tubular and sleeved outside the first rod; an inner sleeve (300) positioned at the upper end portion (201) of the second rod and located between the first rod and the second rod; The clamp assembly (400) includes a clamp (420) that is tightened or loosened by a handle (410). The clamp (420) is positioned at the upper end (201) of the second rod and is at least partially sleeved outside the inner sleeve (300) for tightening the inner sleeve to the outer wall of the first rod or loosening the inner sleeve from the outer wall of the first rod.

2. The telescopic support rod according to claim 1, wherein: The tube wall of the upper end portion (201) of the second rod is provided with a clamping hole (202), and the inner sleeve (300) has an elastic protrusion (301). The elastic protrusion (301) is clamped in the clamping hole (202) to position the inner sleeve at the upper end portion of the second rod.

3. The telescopic support rod according to claim 2, wherein: The inner sleeve (300) has an elastic leg (302), and the elastic protrusion (301) is arranged on the elastic leg (302).

4. The telescopic support rod according to claim 1, wherein: The inner sleeve (300) has a longitudinal fracture (303).

5. The telescopic support rod according to claim 1, wherein: The upper end portion (201) of the second rod is provided with a notch (203), and the hoop (420) is sleeved on the upper end portion (201) of the second rod and is adjacent to the inner sleeve (300) at the notch (203).

6. The telescopic support rod according to claim 5, characterized in that: The hoop (420) sits on the bottom surface (204) of the notch.

7. The telescopic support rod according to claim 6, characterized in that: The inner wall of the hoop (420) has a protrusion (421) protruding toward the notch (203) for tightening the inner sleeve, and the hoop (420) is seated on the bottom surface (204) of the notch via the protrusion (421).

8. The telescopic support rod according to claim 7, wherein the protrusion The upper end surface (422) is flush with the upper end surface (205) of the second rod, the upper end surface (423) of the hoop is higher than the upper end surface (422) of the protrusion and the upper end surface (205) of the second rod, and maintains a first gap (424) with the first rod (100), and the upper end of the inner sleeve (300) has a thickened portion (304), and the thickened portion (304) fills the first gap (424).

9. The telescopic support rod according to claim 7, wherein: A second gap (425) is maintained between the side edge (429) of the protrusion and the side surface (208) of the notch.

10. The telescopic support rod according to claim 6, wherein: The upper end of the inner sleeve (300) is provided with an outer flange (305), and the upper end surface (423) of the hoop is positioned against the outer flange (305).

11. The telescopic support rod according to claim 1, wherein: The hoop assembly (400) includes a pull rod (430), and the hoop (420) has a first arm (426) and a second arm (427) relative to each other. The pull rod (430) is passed through the first arm (426) and the second arm (427). One end of the pull rod (430) is in contact with the first arm (426), and the other end of the pull rod (430) is connected to the handle (410). The handle (410) is provided with a cam portion (411), and the cam portion (411) is pressed against the second arm (427) so that the hoop can be tightened or loosened by the pull rod when the handle is turned over.

12. The telescopic support rod according to claim 11, characterized in that: The first rod (100) has a groove (101) extending along its length, the inner sleeve (300) has a longitudinal fracture (303) and bending portions (306) located on both sides of the longitudinal fracture, the bending portions (306) extending into the groove (101), and the first arm (426) and the second arm (427) have an extrusion portion (428) protruding toward the bending portion (306).

13. The telescopic support rod according to claim 1, wherein: The lower end of the first rod (100) is located inside the second rod (200) and is provided with a first plug (102). The first plug (102) rests on the inner wall (207) of the second rod via the elastic portion (103). The first plug (102) is blocked by the inner sleeve (300) to confine the lower end of the first rod within the tube of the second rod.

14. The telescopic support rod according to claim 1, wherein: A second plug (207) is disposed at the lower end of the second rod (200).

15. The telescopic support rod according to any one of claims 1 to 14, characterized in that: The telescopic support rod also includes a third rod, which is tubular and sleeved outside the second rod. The inner sleeve and the clamping hoop assembly are arranged between the second rod and the third rod. The inner sleeve is positioned at the upper end of the third rod and is located between the second rod and the third rod. The hoop is positioned at the upper end of the third rod and at least partially sleeved outside the inner sleeve for tightening the inner sleeve to the outer wall of the second rod or loosening the inner sleeve from the outer wall of the second rod.

16. Ironing board, characterized by include: The telescopic support rod (10) according to any one of claims 1 to 15; The plate body (20) is directly or indirectly supported on the upper end of the telescopic support rod (10).

17. Garment steamer, which is characterized by include: Host (30); The telescopic support rod (10) according to any one of claims 1 to 15; The plate body (20) or the clothes hanger (40) is directly or indirectly supported on the upper end of the telescopic support rod (10).

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