Telescopic adjustable suspender

Abstract

An inner sleeve and an outer sleeve are connected in a relative sliding mode, a telescopic adjusting mechanism is arranged at the upper end of the outer sleeve in a relative fixed mode, a plurality of elastic clamping pieces are arranged on the inner sleeve in the axial direction, and a safety locking connecting part is arranged on the side of each elastic clamping piece in a matched mode. When the inner sleeve and the outer sleeve are adjusted to stretch out and draw back to a preset length, the elastic clamping piece is matched with the telescopic adjusting mechanism to limit relative axial sliding of the inner sleeve and the outer sleeve, and after the inner sleeve rotates by a preset angle relative to the outer sleeve, the safety locking connecting part is exposed for connection locking, and therefore after the inner sleeve is adjusted and locked relative to the outer sleeve, the safety locking connecting part can be locked. Therefore, the unlocking device has the advantages of being reasonable in structural design, convenient to unlock and safe and reliable to use.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a telescopic adjustable suspension rod.

Background Art

[0002] For some lamps or ceiling fans, they are all connected to the ceiling through a suspension rod. In the prior art, the lengths of many suspension rods are fixed, so people have no option to adjust the height during installation; for some scenes with unsuitable heights, it is necessary to replace the suspension rod to install and use. Therefore, if people use lamps or ceiling fans with this type of suspension rod, they need to pay special attention to the space height dimension when purchasing products again, otherwise it will affect the installation and its use effect.

[0003] In addition, there are also some telescopic adjustable suspension rods on the market. They are mainly composed of an inner pipe and an outer pipe sleeved together. The inner and outer pipes are connected by the cooperation of a single elastic buckle and a card hole to achieve adjustment and limit. When adjusting, it is necessary to press by hand to push the elastic buckle away from the card hole to adjust the telescopic state between the inner and outer pipes. The adjustment of this structure is relatively laborious; and usually the suspension rod only receives axial force, but it is inevitable that it will also receive lateral force, which causes the suspension rod to swing, so that there will be a certain degree of relative rotation between the inner and outer pipes due to the assembly gap. In addition to receiving axial force, the single elastic buckle will also be affected by the torque generated by the relative rotation of the inner and outer pipes. Therefore, it is very easy to cause fatigue failure of the single elastic buckle and pose a safety hazard problem.

[0004] Based on the deficiencies of the prior art, the utility model is specially studied and proposed.

Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a telescopic adjustable suspension rod. The inner sleeve and the outer sleeve are connected in a relatively sliding manner. The telescopic adjustment mechanism is relatively fixedly arranged at the upper end of the outer sleeve. The inner sleeve is axially provided with a plurality of elastic clamping members, and a safety locking connection part is arranged on the side of each elastic clamping member. When the inner sleeve and the outer sleeve are adjusted to a preset length, the elastic clamping members cooperate with the telescopic adjustment mechanism to limit the relative axial sliding of the inner sleeve and the outer sleeve. And when the inner sleeve rotates a preset angle relative to the outer sleeve, the safety locking connection part is exposed for connection and locking. Therefore, after the inner sleeve is adjusted and locked relative to the outer sleeve, the two are in the same movement state and there is no relative rotation or rotation tendency. Therefore, it has the characteristics of reasonable structural design, convenient unlocking, and safe and reliable use.

[0006] To solve the above technical problems, a telescopic and adjustable hanging rod of the present utility model includes an inner sleeve 1 and an outer sleeve 2. The outer sleeve 2 is slidably connected to the inner sleeve 1 along the axial direction. A telescopic adjustment mechanism 3 is relatively fixedly provided at the upper end of the outer sleeve 2. A plurality of elastic clamping members 4 are provided on the inner sleeve 1 along the axial direction. And a safety locking connection portion 5 located on the inner sleeve 1 is correspondingly provided on the side of each elastic clamping member 4. The telescopic adjustment mechanism 3 is configured such that after the inner sleeve 1 and the outer sleeve 2 are relatively axially slid adjusted to a preset position, they are then relatively circumferentially rotated by a preset angle. The corresponding elastic clamping member 4 is then clamped to the telescopic adjustment mechanism 3 to limit the relative axial displacement of the inner sleeve 1 and the outer sleeve 2. At the same time, the safety locking connection portion 5 at the corresponding position is exposed for connection to further limit the circumferential rotation freedom of the inner sleeve 1 and the outer sleeve 2.

[0007] For the above-mentioned telescopic and adjustable hanging rod, the telescopic adjustment mechanism 3 is configured such that after the inner sleeve 1 and the outer sleeve 2 are relatively axially slid adjusted to a preset position, they are then relatively circumferentially rotated by a preset angle. The corresponding elastic clamping member 4 is then clamped to the telescopic adjustment mechanism 3 to limit the relative axial displacement of the outer sleeve 2 relative to the inner sleeve 1 along the elongation axial direction. The telescopic adjustment mechanism 3 is further configured such that under the action of a preset external force, the telescopic adjustment mechanism 3 can push against the elastic clamping member 4 to elastically retract so that the outer sleeve 2 can relatively axially displace relative to the inner sleeve 1 along the shortening axial direction.

[0008] For the above-mentioned telescopic and adjustable hanging rod, the telescopic adjustment mechanism 3 includes a guiding groove 31 axially provided at the upper mouth side and a clamping groove 32 circumferentially provided. The lower end of the guiding groove 31 is smoothly transitionally connected to the clamping groove 32. After the inner sleeve 1 and the outer sleeve 2 are relatively axially slid adjusted to a preset position, the corresponding elastic clamping member 4 is first and then inserted into the telescopic adjustment mechanism 3 along the guiding groove 31 and the clamping groove 32 to limit the relative axial displacement of the inner sleeve 1 and the outer sleeve 2.

[0009] For the above-mentioned telescopic and adjustable hanging rod, the telescopic adjustment mechanism 3 includes an adjustment connection seat 30, a clamping seat 33 and an adjustment connection joint 34. A stepped hole 301 is provided in the adjustment connection seat 30. The clamping seat 33 has a shoulder 331 and is clamped and fixed in the adjustment connection seat 30. The adjustment connection joint 34 is placed in the adjustment connection seat 30, one end is relatively fixedly connected to the outer sleeve 2, and the other end abuts against the shoulder 331 of the clamping seat 33. And the side surface of the adjustment connection joint 34 is relatively fixedly connected to the adjustment connection seat 30.

[0010] The guiding groove 31 and the clamping groove 32 are arranged on the clamping seat 33. An unlocking sliding groove 332 is provided on the clamping seat 33 at the intersection of the guiding groove 31 and the clamping groove 32. A avoiding connecting part 51 is arranged on the side of the adjusting connecting seat 30. When the corresponding elastic clamping part 4 is clamped in the clamping groove 32, the avoiding connecting part 51 exposes the safety locking connecting part 5 to be connected to complete the locking.

[0011] As described above for a telescopic adjustable boom, the avoiding connecting part 51 is a U-shaped notch, which coincides with the mouth of the guiding groove 31 and is located outside.

[0012] As described above for a telescopic adjustable boom, a driving inner conical surface 341 capable of pressing the elastic clamping part 4 to retract into the inner sleeve 1 is arranged in the adjusting connecting joint 34. The large inner diameter port of the driving inner conical surface 341 is close to the shoulder 331, and the small inner diameter port is close to the outer sleeve 2.

[0013] As described above for a telescopic adjustable boom, the adjusting connecting joint 34 and the side surface of the adjusting connecting seat 30 are fixedly connected by screws, and the clamping seat 33 and the side surface of the adjusting connecting joint 34 are fixedly connected by screws.

[0014] As described above for a telescopic adjustable boom, the outer sleeve 2 and the adjusting connecting joint 34 are connected by threads.

[0015] As described above for a telescopic adjustable boom, the elastic clamping part 4 includes an elastic sheet 41 built in the inner sleeve 1 and a clamping protrusion 42. The middle part of the elastic sheet 41 is relatively fixedly connected to the inner wall of the inner sleeve 1, and the two end parts of the elastic sheet 41 are respectively fixedly connected to the clamping protrusion 42. Accordingly, an avoiding hole 43 for the elastic protrusion of the clamping protrusion 42 is provided on the inner sleeve 1.

[0016] Compared with the prior art, the telescopic adjustable boom of the present invention has the following advantages:

[0017] 1. After the inner sleeve and the outer sleeve are adjusted to the preset telescopic length, the degree of freedom in the axial direction is locked, and when the inner sleeve and the outer sleeve rotate relative to each other by a preset angle, the safety locking connecting part is connected and locked so that it cannot move circumferentially, so that the inner sleeve and the outer sleeve are in a synchronous movement state and will not rotate relative to each other or have a rotation tendency, ensuring that the elastic clamping part is subjected to a single-direction force during use, prolonging the service life, avoiding damage due to stress fatigue, and having the characteristics of safe, reliable and convenient use;

[0018] 2. When adjustment is required during installation, as long as the locking screw is loosened, the inner sleeve and the outer sleeve are rotated correspondingly to make the clamping protrusion located at the mouth of the unlocking sliding groove and the guiding groove, and then stretched or contracted correspondingly, the corresponding adjustment can be carried out, so it has the characteristics of convenient and reliable operation.

Description of the Drawings

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, where:

[0020] Figure 1 is a schematic structural view of the utility model in the extended state;

[0021] Figure 2 is a schematic structural view of the utility model in the retracted state;

[0022] Figure 3 is an exploded view of the present utility model;

[0023] Figure 4 is a sectional view of the present utility model in the extended state;

[0024] Figure 5 is a sectional view of the present utility model in the retracted state;

[0025] Figure 6 is a schematic structural view of the telescopic adjustment mechanism of the present utility model;

[0026] Figure 7 is an exploded view of the telescopic adjustment mechanism of the present utility model.

Specific Embodiments

[0027] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0028] Such as Figures 1-7As shown in the figure, a telescopic adjustable suspension rod of the present utility model includes an inner sleeve 1 and an outer sleeve 2. The outer sleeve 2 is slidably connected to the inner sleeve 1 along the axial direction. A telescopic adjustment mechanism 3 is relatively fixedly provided at the upper end of the outer sleeve 2. A plurality of elastic clamping members 4 are arranged along the axial direction of the inner sleeve 1. The elastic clamping member 4 includes an elastic piece 41 disposed inside the inner sleeve 1 and a clamping protrusion 42. The middle part of the elastic piece 41 is relatively fixedly connected to the inner wall of the inner sleeve 1, and both ends of the elastic piece 41 are respectively fixedly connected to the clamping protrusion 42. Correspondingly, an avoidance hole 43 for the elastic protrusion 42 to elastically extend is provided on the inner sleeve 1. A safety locking connection portion 5 located on the inner sleeve 1 is correspondingly provided on the side of each elastic clamping member 4. The telescopic adjustment mechanism 3 is configured such that after the inner sleeve 1 and the outer sleeve 2 are relatively axially slid and adjusted to a preset position, they are then relatively rotated circumferentially by a preset angle. The corresponding elastic clamping member 4 is then clamped to the telescopic adjustment mechanism 3 to limit the relative axial displacement of the inner sleeve 1 and the outer sleeve 2. At the same time, the safety locking connection portion 5 at the corresponding position is exposed for connecting a locking screw 53 to further limit the circumferential rotation freedom of the inner sleeve 1 and the outer sleeve 2. During use, after the inner sleeve and the outer sleeve are adjusted to a preset telescopic length, their axial freedom is locked, and the relative rotation of the inner sleeve and the outer sleeve by a preset angle causes the safety locking connection portion to be connected and locked and unable to move circumferentially, so that the inner sleeve and the outer sleeve are in the same movement state and will not have relative rotation or rotation tendency, ensuring that the elastic clamping member is subjected to a single-direction force during use, prolonging the service life, avoiding damage due to stress fatigue, and having the characteristics of safe, reliable and convenient use.

[0029] The telescopic adjustment mechanism 3 is configured such that after the inner sleeve 1 and the outer sleeve 2 are relatively axially slid and adjusted to a preset position, they are then relatively rotated circumferentially by a preset angle. The corresponding elastic clamping member 4 is then clamped to the telescopic adjustment mechanism 3 to limit the displacement of the outer sleeve 2 relative to the inner sleeve 1 along the elongation axial direction; the telescopic adjustment mechanism 3 is further configured such that under the action of a preset external force, the telescopic adjustment mechanism 3 can push against the elastic clamping member 4 to elastically retract so that the outer sleeve 2 can displace relative to the inner sleeve 1 along the shortening axial direction.

[0030] As Figures 4-7 As shown in the figure, the telescopic adjustment mechanism 3 includes a guiding groove 31 arranged axially and a clamping groove 32 arranged circumferentially on the upper mouth side. The lower end of the guiding groove 31 is smoothly connected to the clamping groove 32. After the inner sleeve 1 and the outer sleeve 2 are relatively axially slid and adjusted to a preset position, the corresponding elastic clamping member 4 is first and then inserted into the telescopic adjustment mechanism 3 along the guiding groove 31 and the clamping groove 32 to limit the relative axial displacement of the inner sleeve 1 and the outer sleeve 2.

[0031] The telescopic adjustment mechanism 3 includes an adjustment connection base 30, a clamping seat 33, and an adjustment connection joint 34. A stepped hole 301 is provided in the adjustment connection base 30. The clamping seat 33 has a shoulder 331 and is fixed in the adjustment connection base 30 by screws. The adjustment connection joint 34 is placed in the adjustment connection base 30, with one end fixedly connected to the outer sleeve 2 in a threaded manner, and the other end abutted against the shoulder 331 of the clamping seat 33. In addition, the side surface of the adjustment connection joint 34 and the adjustment connection base 30 are fixedly connected to each other by screws.

[0032] The guiding groove 31 and the clamping groove 32 are provided on the clamping seat 33. An unlocking sliding groove 332 is provided on the clamping seat 33 at the intersection of the guiding groove 31 and the clamping groove 32. An avoidance connection part 51 is provided on the side of the adjustment connection base 30. When the corresponding elastic clamping part 4 is clamped in the clamping groove 32, the avoidance connection part 51 enables the safety locking connection part 5 to be exposed for connection to complete the locking.

[0033] As Figures 4-6 shown, the avoidance connection part 51 is a U-shaped notch, which coincides with the mouth of the guiding groove 31 and is located on the outside. When the inner sleeve 1 and the outer sleeve 2 are adjusted to a preset length and rotated so that the elastic clamping part 4 is located in the clamping groove 32, the avoidance connection part 51 enables the safety locking connection part 5 to be exposed. At this time, the locking screw 53 is screwed into the safety locking connection part 5, restricting the relative rotation of the inner sleeve 1 and the outer sleeve 2, and the two are in a synchronous state without relative rotation or rotation tendency. Therefore, it has the characteristics of reasonable structural design, convenient unlocking, and safe and reliable use.

[0034] As Figure 4 、 5 shown, a driving inner conical surface 341 capable of pressing the elastic clamping part 4 to retract into the inner sleeve 1 is provided in the adjustment connection joint 34. The large inner diameter port of the driving inner conical surface 341 is close to the shoulder 331, and the small inner diameter port is close to the outer sleeve 2.

[0035] When performing stretching adjustment, loosen the locking screw 53 to enable the relative rotation of the inner sleeve 1 and the outer sleeve 2. When the clamping protrusion 42 is placed in the guiding groove 31, the clamping protrusion 42 remains elastically extended and is not interfered or restricted. The inner sleeve 1 and the outer sleeve 2 can be relatively stretched. When stretched to an appropriate position, the corresponding clamping protrusion 42 slides into the guiding groove 31 until it reaches the mouth of the clamping groove 32. Then, rotate the inner sleeve 1 and the outer sleeve 2 relatively so that the clamping protrusion 42 is completely clamped into the end of the clamping groove 32 and cannot continue to rotate. At the same time, the safety locking connection part 5 is aligned and exposed with the avoidance connection part 51. Finally, connect and lock the locking screw 53 with the safety locking connection part 5, and thus the elongation adjustment is completed, as Figure 4 shown.

[0036] When performing shortening adjustment, loosen the locking screw 53, so that the inner sleeve 1 and the outer sleeve 2 rotate relative to each other. When the clamping protrusion 42 is placed in the guiding groove 31 and aligned with the unlocking chute 332, compress the lengths of the inner sleeve 1 and the outer sleeve 2. Then, the clamping protrusion 42 is gradually pushed back by the driving conical surface 341 until it retracts into the inner sleeve 1. At this time, the inner sleeve 1 and the outer sleeve 2 can be further shortened and adjusted. After shortening to the appropriate position, rotate the inner sleeve 1 and the outer sleeve 2 relative to each other so that the clamping protrusion 42 is completely engaged in the end of the clamping groove 32 and cannot rotate further. At the same time, the safety locking connection part 5 is aligned with the avoidance connection part 51 and exposed. Finally, connect and lock the locking screw 53 with the safety locking connection part 5, and thus the shortening adjustment is completed, as Figure 5 shown.

Claims

1. A telescopically adjustable boom, characterized in that The invention comprises an inner sleeve (1) and an outer sleeve (2), wherein the outer sleeve (2) can be slidably connected to the inner sleeve (1) in the axial direction, a telescopic adjustment mechanism (3) is relatively fixedly provided at the upper end of the outer sleeve (2), the inner sleeve (1) is provided with a plurality of elastic clamping parts (4) in the axial direction, and each elastic clamping part (4) is correspondingly provided with a safety locking connection part (5) located on the inner sleeve (1), the telescopic adjustment mechanism (3) is configured such that after the inner sleeve (1) and the outer sleeve (2) are relatively axially slidably adjusted to a preset position, and then relatively circumferentially rotated by a preset angle, the corresponding elastic clamping part (4) is clamped to the telescopic adjustment mechanism (3) to limit the relative axial displacement of the inner sleeve (1) and the outer sleeve (2), and at the same time, the safety locking connection part (5) at the corresponding position is exposed for connection, thereby limiting the degree of freedom of circumferential rotation of the inner sleeve (1) and the outer sleeve (2).

2. A telescopically adjustable suspension rod according to claim 1, characterized in that The telescopic adjustment mechanism (3) is configured such that after the inner sleeve (1) and the outer sleeve (2) are adjusted to slide relative to each other in the axial direction to a preset position, and then rotate relative to each other in the circumferential direction by a preset angle, the corresponding elastic clamping piece (4) is clamped on the telescopic adjustment mechanism (3) to limit the displacement of the outer sleeve (2) relative to the inner sleeve (1) along the elongated axial direction; the telescopic adjustment mechanism (3) is also configured such that under the action of a preset external force, the telescopic adjustment mechanism (3) can press the elastic clamping piece (4) to elastically retract so that the outer sleeve (2) can be displaced relative to the inner sleeve (1) along the shortened axial direction.

3. The telescopically adjustable suspension rod according to claim 1, characterized in that The telescopic adjustment mechanism (3) comprises a guide groove (31) arranged axially and a clamping groove (32) arranged circumferentially on the upper opening side. The lower end of the guide groove (31) is smoothly transitionally connected to the clamping groove (32). After the inner sleeve (1) and the outer sleeve (2) are adjusted to a preset position by relative axial sliding, the corresponding elastic clamping piece (4) is firstly and then clamped into the telescopic adjustment mechanism (3) along the guide groove (31) and the clamping groove (32) to limit the relative axial displacement of the inner sleeve (1) and the outer sleeve (2).

4. The telescopically adjustable suspension rod according to claim 3, characterized in that The telescopic adjustment mechanism (3) comprises an adjustment connection seat (30), a clamping seat (33) and an adjustment connection joint (34); the adjustment connection seat (30) is provided with a stepped hole (301); the clamping seat (33) has a shoulder (331); the clamping seat (33) is clamped and fixed in the adjustment connection seat (30); the adjustment connection joint (34) is placed in the adjustment connection seat (30), one end of which is relatively fixedly connected to the outer sleeve (2) and the other end of which is in contact with the shoulder (331) of the clamping seat (33); and the side surface of the adjustment connection joint (34) is relatively fixedly connected to the adjustment connection seat (30); The guide groove (31) and the clamping groove (32) are arranged on the clamping seat (33); the clamping seat (33) is provided with an unlocking slide groove (332) located at the intersection of the guide groove (31) and the clamping groove (32); and the side of the adjustment connection seat (30) is provided with an avoidance connection part (51); when the corresponding elastic clamping piece (4) is clamped in the clamping groove (32), the avoidance connection part (51) allows the safety locking connection part (5) to be exposed so as to be connected and complete the locking.

5. The telescopically adjustable suspension rod according to claim 4, characterized in that The avoidance connection portion (51) is a U-shaped notch, and overlaps with the mouth of the guide groove (31) and is located on the outside.

6. The telescopically adjustable suspension rod according to claim 4, characterized in that The adjustable connecting joint (34) is provided with a driving inner conical surface (341) capable of pressing the elastic clamping part (4) to retract into the inner sleeve (1); the large inner diameter port of the driving inner conical surface (341) is close to the shoulder (331), and the small inner diameter port is close to the outer sleeve (2).

7. The telescopically adjustable suspension rod according to claim 4, characterized in that The adjustable connection joint (34) is fastened to the side of the adjustable connection seat (30) by means of screws, and the clamping seat (33) is fastened to the side of the adjustable connection joint (34) by means of screws.

8. The telescopically adjustable suspension rod according to claim 4, characterized in that The outer sleeve (2) is connected to the adjusting connection joint (34) via threads.

9. A telescopically adjustable suspension rod according to any one of claims 1 to 7, characterized in that The elastic clamping member (4) comprises an elastic sheet (41) and a clamping protrusion (42) which are built into the inner sleeve (1); the middle portion of the elastic sheet (41) is relatively fixedly connected to the inner wall of the inner sleeve (1); both ends of the elastic sheet (41) are respectively fixedly connected to the clamping protrusion (42); and correspondingly, an avoidance hole (43) is provided on the inner sleeve (1) for the clamping protrusion (42) to elastically extend.

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