Quick-lock type telescopic rod and telescopic locking assembly

Abstract

The utility model discloses a quick lock type telescopic rod and telescopic locking assembly, the quick lock type telescopic rod includes the inner tube and outer tube and telescopic locking assembly of mutual sleeve, and telescopic locking assembly includes the pressing seat, pressing cover and pressing spring, and the outer periphery of pressing seat forms the pressing taper surface, and the pressing seat is connected with the stop joint, and the pressing cover includes at least two pressing blocks around the pressing seat and is separated from each other, and the connecting piece of connecting each pressing block, and each pressing block of pressing cover and pressing taper surface sliding fit and movable resistance the inner wall of outer tube, and the pressing spring is arranged between the stop joint and pressing cover.

Description

Technical Field

[0001] This utility model relates to the field of telescopic rods, and in particular to a quick-lock type telescopic rod and a telescopic locking assembly. Background Technology

[0002] Telescopic poles are adjustable in length and, with the fixing brackets at both ends, can be securely installed between fixed surfaces (such as walls) at certain intervals. In daily life, telescopic poles are widely used as clotheslines, curtain rods, shower curtain rods, and projection screen hanging rods, etc.

[0003] Some existing telescopic rods use a telescopic locking assembly to lock the inner and outer tubes that are interlocked. This telescopic assembly includes a fixed seat and a deformable clamping sleeve. The fixed seat is threadedly connected to the clamping sleeve and is fixed to the inner tube. The clamping sleeve is circumferentially limited to the outer tube. To lock the inner and outer tubes, the inner and outer tubes are rotated relative to each other, causing the clamping sleeve to move forward relative to the fixed seat and expand, thus tightly fitting the clamping sleeve to the outer tube and locking the inner and outer tubes. To unlock the inner and outer tubes, the inner and outer tubes are rotated relative to each other, causing the clamping sleeve to move in the opposite direction relative to the fixed seat and contract, thus loosening the tight fit between the clamping sleeve and the outer tube and allowing the inner and outer tubes to move relative to each other. There is a problem with this type of telescopic rod with telescopic components: to lock the inner and outer tubes, the inner and outer tubes need to be rotated relative to each other multiple times, which is very time-consuming and inconvenient to operate. In addition, due to the different strengths of different users, some users (such as women with less strength) are unable to rotate the inner and outer tubes relative to each other to the state where the tightening sleeve and the outer tube are tightly fitted, resulting in the problem that the outer and inner tubes cannot be stably locked.

[0004] In view of the above problems, it is necessary to study a quick-lock telescopic rod and telescopic locking assembly to solve the problems of inconvenient operation, time-consuming operation, and inability to stably lock the outer tube and inner tube in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a quick-lock telescopic rod and telescopic locking assembly to solve the problems of inconvenient operation, time-consuming operation, and unstable locking between the outer tube and the inner tube in the existing technology.

[0006] To achieve the above objectives, the solution of this utility model is: A telescopic locking assembly includes a clamping seat, a clamping sleeve, and a clamping spring. The outer periphery of the clamping seat forms a clamping conical surface, the diameter of which gradually increases from a first end to a second end of the clamping seat. A stop joint is connected to the first end of the clamping seat. The clamping sleeve includes at least two clamping blocks surrounding the clamping seat and spaced apart from each other, and a connector that movably connects the clamping blocks of the clamping sleeve. The connector is elastic. The inner sides of the clamping blocks of the clamping sleeve slide against the clamping conical surface. The clamping spring is disposed between the stop joint and the clamping sleeve, and its two ends abut against the stop joint and the clamping sleeve, respectively. The clamping spring is used to drive the clamping sleeve to move towards the second end of the clamping seat.

[0007] The connecting member of the clamping sleeve is an elastic ring structure, and the connecting member holds the outer side of each clamping block of the clamping sleeve.

[0008] The connector includes multiple separated spring arms, each spring arm of the connector is located between each clamping block of the clamping sleeve, and the two ends of each spring arm are respectively connected to the two clamping blocks adjacent to that spring arm.

[0009] The spring arms of the connector and the clamping blocks of the clamping sleeve are integrally injection molded.

[0010] At least two guide portions are formed on the outer periphery of the clamping seat. Each guide portion is symmetrically arranged with respect to the central axis of the clamping seat. Each guide portion has an inclined guide surface. The distance from the inclined guide surface to the first end of the clamping seat gradually increases along the circumference of the clamping seat. The number of clamping blocks of the clamping sleeve is the same as the number of guide portions of the clamping seat. Each clamping block has a movable portion corresponding to the guide portion. The movable portion of each clamping block of the clamping sleeve slides in cooperation with the inclined guide surface of each guide portion of the clamping seat.

[0011] The movable part of the clamping block has an inclined sliding surface, and the inclined sliding surface of the movable part slides in conjunction with the inclined guide surface of the guide part.

[0012] The guide portion of the clamping seat is also provided with a locking surface, which is aligned with the inclined guide surface of the guide portion near the second end of the clamping seat; the movable parts of each clamping block of the clamping sleeve respectively move to abut against the locking surfaces of each guide portion of the clamping seat.

[0013] The movable part of the clamping block has a positioning block, and the end face of the positioning block of the movable part movably abuts against the locking surface of the guide part.

[0014] The guide portion of the clamping seat is also provided with a limiting surface, and the limiting surface of the guide portion is connected to the side of the inclined guide surface of the guide portion near the first end of the clamping seat; the side of the positioning block of the movable part of each clamping block of the clamping sleeve moves to abut against the locking surface of each guide portion of the clamping seat.

[0015] Multiple parallel and inwardly convex clamping ridges are formed on the inner side of the clamping block, and each clamping ridge of the clamping block slides in conjunction with the clamping cone surface.

[0016] The side of the clamping block closest to the limiting stop is fitted with an elastic pad, and the inner side of the elastic pad moves to abut against the clamping cone surface.

[0017] The first end of the clamping seat forms a connecting post, which is connected to the stop joint, and the clamping spring is sleeved on the connecting post.

[0018] A quick-lock telescopic rod is characterized by comprising an inner tube, an outer tube, and a telescopic locking assembly as described above; the outer tube movably sleeves the inner tube; the clamping seat of the telescopic locking assembly is connected to one end of the inner tube, and each clamping block of the clamping sleeve of the telescopic locking assembly movably abuts against the inner wall of the outer tube.

[0019] The outer side of the clamping block forms a clamping surface that adapts to the inner wall of the outer tube.

[0020] With the above solution, when adjusting the length of the quick-lock telescopic rod of this utility model, it is only necessary to rotate the inner tube and the outer tube relative to each other by a certain angle and move the inner tube and the outer tube relative to each other, or only to move the inner tube and the outer tube relative to each other, without having to rotate the inner tube and the outer tube relative to each other multiple times. Therefore, the operation of adjusting the length of the quick-lock telescopic rod of this utility model is faster and more convenient. In addition, by applying pressure to the stop joint and the clamping sleeve at both ends of the clamping spring, this utility model can make the clamping sleeve stably in an expanded state, so that the outer sides of each clamping block of the clamping sleeve stably and tightly abut against the inner wall of the outer tube, thereby making the inner tube and the outer tube stably locked. Attached Figure Description

[0021] Figure 1 This is an exploded view of the quick-lock telescopic rod according to Embodiment 1 of this utility model.

[0022] Figure 2 This is a structural schematic diagram of the quick-lock telescopic rod according to Embodiment 1 of this utility model.

[0023] Figure 3 A cross-sectional view of the quick-lock telescopic rod according to Embodiment 1 of this utility model. Figure 1 (Locked state).

[0024] Figure 4 A cross-sectional view of the quick-lock telescopic rod according to Embodiment 1 of this utility model. Figure 2 (Locked state).

[0025] Figure 5 A cross-sectional view of the quick-lock telescopic rod according to Embodiment 1 of this utility model. Figure 3 (Locked state).

[0026] Figure 6 A cross-sectional view of the quick-lock telescopic rod according to Embodiment 1 of this utility model. Figure 4 (Locked state).

[0027] Figure 7 This is an exploded view of the telescopic locking assembly according to Embodiment 1 of this utility model.

[0028] Figure 8 This is a schematic diagram of the telescopic locking component according to Embodiment 1 of this utility model.

[0029] Figure 9 This is a schematic diagram of the clamping seat according to Embodiment 1 of this utility model.

[0030] Figure 10 This is a schematic diagram of the compression sleeve in Embodiment 1 of this utility model.

[0031] Figure 11 This is a schematic diagram of the clamping block according to Embodiment 1 of this utility model. Figure 1 .

[0032] Figure 12 This is a schematic diagram of the clamping mechanism in Embodiment 1 of the present invention. Figure 2 .

[0033] Figure 13 This is an exploded view of the quick-lock telescopic rod according to Embodiment 2 of this utility model.

[0034] Figure 14 This is a cross-sectional view (locked state) of the quick-lock telescopic rod according to Embodiment 2 of this utility model.

[0035] Figure 15 This is a partial structural diagram of the telescopic locking component of Embodiment 2 of this utility model.

[0036] Figure 16 This is a schematic diagram of the clamping sleeve in Embodiment 1 of this utility model. Figure 1 .

[0037] Figure 17 This is a schematic diagram of the clamping sleeve in Embodiment 1 of this utility model. Figure 2 .

[0038] Label Explanation: Inner tube A, Outer tube B, Telescopic locking component C, Compression seat 1, compression cone surface 11, guide part 12, inclined guide surface 121, locking surface 122, limiting surface 123, connecting post 13. Compression sleeve 2, compression block 21, movable part 211, inclined sliding surface 2111, positioning block 2112, groove 212, hole 213, compression protrusion 214, compression surface 215, connector 22, elastic pad 23, elastic rib 231 Compression spring 3, Stop joint 4, Fixed base D, Limiting sleeve E. Detailed Implementation

[0039] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0040] Example 1: Cooperate Figures 1 to 12 As shown, in Embodiment 1 of this utility model, the quick-lock telescopic rod includes an inner tube A, an outer tube B, and a telescopic locking assembly C; wherein, the outer tube B movably sleeves the inner tube A; the telescopic locking assembly C includes a clamping seat 1, a clamping sleeve 2, and a clamping spring 3; the clamping seat 1 is connected to the end of the inner tube A near the outer tube B, and the outer periphery of the clamping seat 1 forms a clamping cone surface 11 and at least two guide portions 12, the diameter of the clamping cone surface 11 gradually increases along the direction from the first end to the second end of the clamping seat 1, the first end of the clamping seat 1 is connected to a stop joint 4, each guide portion 12 is symmetrically arranged with respect to the central axis of the clamping seat 1, the guide portion 12 is provided with an inclined guide surface 121, and the distance from the inclined guide surface 121 to the first end of the clamping seat 1 gradually increases along the circumference of the clamping seat 1; the clamping sleeve 2 includes at least two sleeves surrounding the clamping seat 1 and... The clamping blocks 21 are separated from each other, and the connecting member 22 movably connects each clamping block 21 of the clamping sleeve 2. The connecting member 22 is elastic. The number of clamping blocks 21 of the clamping sleeve 2 is the same as the number of guide parts 12 of the clamping seat 1. Each clamping block 21 has a movable part 211 corresponding to the guide part 12. The inner side of each clamping block 21 of the clamping sleeve 2 slides in cooperation with the clamping cone surface 11. The movable part 211 of each clamping block 21 of the clamping sleeve 2 slides in cooperation with the inclined guide surface 121 of each guide part 12 of the clamping seat 1. Each clamping block 21 of the clamping sleeve 2 movably abuts against the inner wall of the outer tube B. The clamping spring 3 is disposed between the stop joint 4 and the clamping sleeve 2. The two ends of the clamping spring 3 abut against the stop joint 4 and the clamping sleeve 2 respectively. The clamping spring 3 is used to drive the clamping sleeve 2 to move towards the second end of the clamping seat 1.

[0041] In Embodiment 1 of this utility model, the working principle of the quick-lock telescopic rod is as follows: In the normal state (i.e., locked state), the two ends of the clamping spring 3 apply pressure to the stop joint 4 and the clamping sleeve 2, so that the inner side of each clamping block 21 of the clamping sleeve 2 matches the larger diameter area of ​​the clamping cone surface 11, so that each clamping block 21 of the clamping sleeve 2 expands outward and the clamping sleeve 2 is in an expanded state. At this time, the outer side of each clamping block 21 of the clamping sleeve 2 tightly abuts against the inner wall of the outer tube B, so that the clamping sleeve 2 and the outer tube B are tightly fitted, thereby locking the inner tube A and the outer tube B. When adjusting the length of the quick-lock telescopic rod of this utility model, the user rotates the inner tube A and the outer tube B relative to each other by a certain angle (this angle is less than or equal to 90°, and this angle can be called the setting switch angle), so that the outer tube B drives the movable parts 211 of each clamping block 21 of the clamping sleeve 2 to slide forward along the inclined guide surface 121 of each guide part 12 of the clamping seat 1; and since the distance from the inclined guide surface 121 of the guide part 12 to the first end of the clamping seat 1 gradually increases along the circumference of the clamping seat 1, the movable parts 211 Sliding along the inclined guide surface 121 of the guide portion 12 will drive the clamping sleeve 2 to move towards the second end away from the clamping seat 1. At this time, under the elastic reset action of the connecting piece 22, each clamping block 21 of the clamping sleeve 2 retracts inward, so that the clamping sleeve 2 is in a contracted state. The inner side of each clamping block 21 of the clamping sleeve 2 mates with the smaller diameter area of ​​the clamping cone surface 11. At this time, each clamping block 21 of the clamping sleeve 2 is not tightly fitted with the outer tube B, so that the inner tube A and the outer tube B can move relative to each other. The quick-lock telescopic rod of this utility model is in the unlocked state. In the locked state, after the user rotates the inner tube A and outer tube B relative to each other by a certain angle and keeps them from rotating relative to each other, the user can move the inner tube A and outer tube B relative to each other to adjust the length of the quick-lock telescopic rod of this invention (the length of the quick-lock telescopic rod of this invention can be reduced or increased); after the length is adjusted to the correct position, the user rotates the inner tube A and outer tube B relative to each other in the opposite direction to set the switching angle, so that the movable parts 211 of each clamping block 21 of the clamping sleeve 2 move along the respective guides of the clamping seat 1. The inclined guide surface 121 of part 12 slides in the opposite direction, thereby driving the clamping sleeve 2 to move away from the second end of the clamping seat 1. At the same time, the clamping spring 3 opens, thereby making the inner side of each clamping block 21 of the clamping sleeve 2 stably cooperate with the larger diameter area of ​​the clamping cone surface 11, so that each clamping block 21 of the clamping sleeve 2 expands outward and the clamping sleeve 2 is in an expanded state. At this time, the outer side of each clamping block 21 of the clamping sleeve 2 tightly abuts against the inner wall of the outer tube B, so that the clamping sleeve 2 and the outer tube B are tightly fitted, thereby locking the inner tube A and the outer tube B.

[0042] As can be seen from the above, in Embodiment 1 of this utility model, when adjusting the length of the quick-lock telescopic rod, it is only necessary to rotate the inner tube A and the outer tube B relative to each other by a certain angle and move the inner tube A and the outer tube B relative to each other. It is not necessary to rotate the inner tube A and the outer tube B relative to each other multiple times. Therefore, the operation of adjusting the length of the quick-lock telescopic rod of this utility model is faster and more convenient. In addition, by applying pressure to the stop joint 4 and the clamping sleeve 2 at both ends of the clamping spring 3, this utility model can make the clamping sleeve 2 stably in an expanded state, so that the outer sides of each clamping block 21 of the clamping sleeve 2 stably and tightly abut against the inner wall of the outer tube B (at this time, the clamping cone surface 11 of the clamping seat 1 causes each clamping block 21 of the clamping sleeve 2 to open outward, and the greater the force applied by the clamping spring 3, the larger the opening of each clamping block 21 of the clamping sleeve 2 and the tighter the fit with the inner wall of the outer tube B), thereby making the inner tube A and the outer tube B stably locked.

[0043] In the first embodiment of this utility model, the connecting member 22 of the clamping sleeve 2 can be an elastic ring structure, and the connecting member 22 holds the outer side of each clamping block 21 of the clamping sleeve 2. With this configuration, the clamping blocks 21 and the connecting member 22 of the clamping sleeve 2 are simple to manufacture, and it can ensure that each clamping block 21 of the clamping sleeve 2 can expand outward and contract inward. Each clamping block 21 of the clamping sleeve 2 has a groove 212 on its outer side for the connecting member 22 to fit into, preventing the connecting member 22 from moving.

[0044] In the first embodiment of this utility model, the movable part 211 of the clamping block 21 has an inclined sliding surface 2111, and the inclined sliding surface 2111 of the movable part 211 slides in cooperation with the inclined guide surface 121 of the guide part 12. This arrangement allows the movable part 211 to slide smoothly along the inclined guide surface 121, while reducing the wear of the clamping block 21.

[0045] In the first embodiment of this utility model, multiple parallel and inwardly convex clamping protrusions 214 are formed on the inner side of the clamping block 21. The clamping protrusions 214 of the clamping block 21 can be arranged along the circumference or axial direction of the clamping seat 1. Each clamping protrusion 214 of the clamping block 21 slides in cooperation with the clamping cone surface 11. The contact area between the clamping protrusion 214 and the clamping cone surface 11 is small, which can avoid the inner side of the clamping block 21 from being completely tightly pressed against the clamping cone surface 11, which would prevent the entire clamping sleeve 2 from moving.

[0046] In an embodiment of this utility model, a clamping surface 215 can be formed on the outer side of the clamping block 21. The clamping surface 215 is adapted to the inner wall of the outer tube B. When the quick-lock telescopic rod of this utility model is in the locked state, the clamping surface 215 of the clamping block 21 can form a large area of ​​contact with the inner wall of the outer tube B, so that the inner tube A and the outer tube B can be stably locked. Among them, when the outer tube B is a round tube, the clamping surface 215 can be an arc surface design; while when the outer tube B is a square tube, the clamping surface 215 can be a flat surface design.

[0047] In Embodiment 1 of this utility model, an elastic pad 23 is fitted on the side of the clamping block 21 near the limiting stop. The inner side of the elastic pad 23 moves against the clamping cone surface 11, providing elastic support for the clamping block 21 and ensuring the stability of the outer side of the clamping block 21, thus preventing the clamping block 21 from jamming with the outer tube B. Furthermore, the outer side of the elastic pad 23 can also move into contact with the inner wall of the outer tube B to compensate for manufacturing tolerances of the outer tube B. When the quick-lock telescopic rod of this utility model is in the locked state, the outer side of the elastic pad 23 abuts against the inner wall of the outer tube B, further improving the connection stability between the outer tube B and the inner tube A. In addition, the high friction between the elastic pad 23 and the inner wall of the outer tube B effectively controls the movement of the clamping block 21, making each clamping block 21 of the clamping sleeve 2 move quickly when it expands outward, so that the inner tube A and the outer tube B can be locked quickly. The clamping block 21 may have a recessed hole 213, and the elastic pad 23 fits into the recessed hole 213. Multiple elastic ribs 231 that abut against the clamping cone surface 11 are formed on the inner side of the elastic pad 23. The contact area between the elastic ribs 231 and the clamping cone surface 11 is small, which can prevent the inner side of the elastic pad 23 from being completely tightly fitted to the clamping cone surface 11, which would prevent the entire clamping sleeve 2 from moving.

[0048] In the first embodiment of this utility model, the guide portion 12 of the clamping seat 1 is further provided with a locking surface 122. The locking surface 122 of the guide portion 12 is connected to the side of the inclined guide surface 121 of the guide portion 12 near the second end of the clamping seat 1. The movable portions 211 of each clamping block 21 of the clamping sleeve 2 respectively move against the locking surfaces 122 of each guide portion 12 of the clamping seat 1. After the telescopic locking assembly C is assembled, by the pressure of the clamping spring 3, the movable portions 211 of each clamping block 21 of the clamping sleeve 2 respectively abut against the locking surfaces 122 of each guide portion 12 of the clamping seat 1 and limit the clamping sleeve 2, so that the clamping sleeve 2 will not detach from the clamping seat 1. When the quick-lock telescopic rod of this utility model is in the locked state, the movable portions 211 of each clamping block 21 of the clamping sleeve 2 also abut against the locking surfaces 122 of each guide portion 12 of the clamping seat 1. The movable part 211 of the pressing block 21 also has a positioning block 2112, and the end face of the positioning block 2112 of the movable part 211 is used to move against the locking surface 122 of the guide part 12.

[0049] In the first embodiment of this utility model, the guide portion 12 of the clamping seat 1 is further provided with a limiting surface 123. The limiting surface 123 of the guide portion 12 is connected to the side of the inclined guide surface 121 of the guide portion 12 near the first end of the clamping seat 1. The side of the movable portion 211 positioning block 2112 of each clamping block 21 of the clamping sleeve 2 respectively moves against the limiting surface 123 of each guide portion 12 of the clamping seat 1. When the quick-lock telescopic rod of this utility model is in the unlocked state, the side of the movable portion 211 positioning block 2112 of each clamping block 21 of the clamping sleeve 2 respectively abuts against the limiting surface 123 of each guide portion 12 of the clamping seat 1. The limiting effect of the limiting surface 123 on the positioning block 2112 can ensure that the user can accurately rotate the set switch angle, so that when the quick-lock telescopic rod of this utility model is accurately switched from the locked state to the unlocked state.

[0050] In the first embodiment of this utility model, the first end of the clamping seat 1 can form a connecting post 13, the connecting post 13 is connected to the stop joint 4, the clamping spring 3 is sleeved on the connecting post 13 to prevent the clamping spring 3 from shifting, the stop joint 4 can be a screw, and the clamping spring 3 can be a conical spring.

[0051] In Embodiment 1 of this utility model, both the end of the inner tube A away from the outer tube B and the end of the outer tube B away from the inner tube A can be connected to a fixed seat D. The fixed seat D has a large area, which can improve the stability of the quick-locking telescopic rod against the fixed surface. The fixed seat D can have a rough-surfaced gasket to improve the friction between the fixed seat D and the fixed surface. The outer tube B can be fitted with a limiting sleeve E, which is used to cooperate with the clamping seat 1 to prevent the inner tube A and the outer tube B from separating relative to each other.

[0052] Example 2: Cooperate Figures 13 to 17 As shown, the main difference between Embodiment 2 and Embodiment 1 of this utility model is that the clamping seat 1 in Embodiment 2 does not have a guide portion 12, and correspondingly, the clamping block 21 of the clamping sleeve 2 in Embodiment 2 also does not have a movable portion 211. With this configuration, the working principle of the quick-lock telescopic rod in Embodiment 2 of this utility model is as follows: In the normal state (i.e., locked state), the two ends of the clamping spring 3 apply pressure to the stop joint 4 and the clamping sleeve 2, so that the inner side of each clamping block 21 of the clamping sleeve 2 matches the larger diameter area of ​​the clamping cone surface 11, so that each clamping block 21 of the clamping sleeve 2 expands outward and the clamping sleeve 2 is in an expanded state. At this time, the outer side of each clamping block 21 of the clamping sleeve 2 tightly abuts against the inner wall of the outer tube B, so that the clamping sleeve 2 and the outer tube B are tightly fitted, thereby locking the inner tube A and the outer tube B. When adjusting the length of the quick-lock telescopic rod of this utility model, the user moves the inner tube A and the outer tube B in a direction of relative expansion (i.e., moves the inner tube A and the outer tube B relative to each other in a direction that increases the length of the quick-lock telescopic rod of this utility model). At this time, the outer tube B will drive each clamping block 21 of the clamping sleeve 2 to move away from the second end of the clamping seat 1, that is, drive the clamping sleeve 2 to move away from the second end of the clamping seat 1. At this time, under the elastic reset action of the connecting piece 22, each clamping block 21 of the clamping sleeve 2 retracts inward, so that the clamping sleeve 2 is in a contracted state. The inner side of each clamping block 21 of the clamping sleeve 2 mates with the smaller diameter area of ​​the clamping cone surface 11. At this time, the clamping blocks 21 of the clamping sleeve 2 are not tightly fitted with the outer tube B, so that the quick-lock telescopic rod of this utility model... When the quick-lock telescopic rod of the utility model is in the unlocked state, the inner tube A and the outer tube B can be unfolded relative to each other. Thus, by continuously moving the inner tube A and the outer tube B in the direction that allows them to unfold relative to each other, the length of the quick-lock telescopic rod of this utility model increases. Afterwards, when the user stops moving the inner tube A and the outer tube B relative to each other, the two ends of the clamping spring 3 apply pressure to the stop joint 4 and the clamping sleeve 2, causing the inner side of each clamping block 21 of the clamping sleeve 2 to engage with the larger diameter area of ​​the clamping cone surface 11. This causes the clamping blocks 21 of the clamping sleeve 2 to expand outwards, resulting in the clamping sleeve 2 being in an expanded state. At this time, the outer sides of each clamping block 21 of the clamping sleeve 2 tightly abut against the inner wall of the outer tube B, making the clamping sleeve 2 and the outer tube B tightly fitted, thereby locking the inner tube A and the outer tube B. It should be noted that the user can move the inner tube A and the outer tube B in the direction of relative unfolding until the inner tube A and the outer tube B are separated, and then reassemble the inner tube A and the outer tube B. In this way, the length of the quick-lock telescopic rod of this utility model can be adjusted again.

[0053] As can be seen from the above, in Embodiment 2 of this utility model, when adjusting the length of the quick-lock telescopic rod, it is only necessary to move the inner tube A and the outer tube B relative to each other, without having to rotate the inner tube A and the outer tube B relative to each other multiple times. Therefore, the operation of adjusting the length of the quick-lock telescopic rod of this utility model is faster and more convenient.

[0054] In addition, in the second embodiment of this utility model, the connecting member 22 of the clamping sleeve 2 includes a plurality of separated elastic arms 221. The elastic arms 221 are bent and each elastic arm 221 of the connecting member 22 is located between each clamping block 21 of the clamping sleeve 2. The two ends of each elastic arm 221 are connected to the two clamping blocks 21 adjacent to the elastic arm 221. In this way, each clamping block 21 of the clamping sleeve 2 can expand outward and contract inward. The elastic arms 221 of the connecting member 22 and each clamping block 21 of the clamping sleeve 2 can be integrally injection molded, so that the clamping sleeve 2 can be integrally injection molded, eliminating the assembly process of the clamping sleeve 2.

[0055] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A telescopic locking assembly, characterized in that: Includes clamping seat, clamping sleeve, and clamping spring; The outer periphery of the clamping seat forms a clamping cone surface, and the diameter of the clamping cone surface gradually increases from the first end to the second end of the clamping seat; a stop joint is connected to the first end of the clamping seat; The clamping sleeve includes at least two clamping blocks that surround the clamping seat and are spaced apart from each other, and a connector that movably connects the clamping blocks of the clamping sleeve. The connector is elastic. The inner side of each clamping block of the clamping sleeve slides in fit with the clamping cone surface. The clamping spring is disposed between the stop joint and the clamping sleeve, and the two ends of the clamping spring abut against the stop joint and the clamping sleeve respectively. The clamping spring is used to drive the clamping sleeve to move towards the second end closer to the clamping seat.

2. The telescopic locking assembly as described in claim 1, characterized in that: The connecting member of the clamping sleeve is an elastic ring structure, and the connecting member holds the outer side of each clamping block of the clamping sleeve.

3. The telescopic locking assembly as described in claim 1, characterized in that: The connector includes multiple separated spring arms, each spring arm of the connector is located between each clamping block of the clamping sleeve, and the two ends of each spring arm are respectively connected to the two clamping blocks adjacent to that spring arm.

4. The telescopic locking assembly as described in claim 3, characterized in that: The spring arms of the connector and the clamping blocks of the clamping sleeve are integrally injection molded.

5. The telescopic locking assembly as described in claim 1, characterized in that: At least two guide portions are also formed on the outer periphery of the clamping seat. Each guide portion is symmetrically arranged with respect to the central axis of the clamping seat. The guide portion is provided with an inclined guide surface. The distance from the inclined guide surface to the first end of the clamping seat gradually increases along the circumference of the clamping seat. The number of clamping blocks in the clamping sleeve is the same as the number of guide parts in the clamping seat, and the clamping blocks are provided with movable parts corresponding to the guide parts. The movable parts of each clamping block of the clamping sleeve slide in cooperation with the inclined guide surfaces of each guide part of the clamping seat.

6. The telescopic locking assembly as described in claim 5, characterized in that: The movable part of the clamping block has an inclined sliding surface, and the inclined sliding surface of the movable part slides in conjunction with the inclined guide surface of the guide part.

7. The telescopic locking assembly as described in claim 5 or 6, characterized in that: The guide portion of the clamping seat is also provided with a locking surface, which is aligned with the inclined guide surface of the guide portion near the second end of the clamping seat; the movable parts of each clamping block of the clamping sleeve respectively move to abut against the locking surfaces of each guide portion of the clamping seat.

8. The telescopic locking assembly as described in claim 7, characterized in that: The movable part of the clamping block has a positioning block, and the end face of the positioning block of the movable part movably abuts against the locking surface of the guide part.

9. The telescopic locking assembly as described in claim 7, characterized in that: The guide portion of the clamping seat is also provided with a limiting surface, and the limiting surface of the guide portion is connected to the side of the inclined guide surface of the guide portion near the first end of the clamping seat; the side of the positioning block of the movable part of each clamping block of the clamping sleeve moves to abut against the locking surface of each guide portion of the clamping seat.

10. The telescopic locking assembly as claimed in claim 1, characterized in that: Multiple parallel and inwardly convex clamping ridges are formed on the inner side of the clamping block, and each clamping ridge of the clamping block slides in conjunction with the clamping cone surface.

11. The telescopic locking assembly as claimed in claim 1, characterized in that: The side of the clamping block closest to the limiting stop is fitted with an elastic pad, and the inner side of the elastic pad moves to abut against the clamping cone surface.

12. The telescopic locking assembly as claimed in claim 1, characterized in that: The first end of the clamping seat forms a connecting post, which is connected to the stop joint, and the clamping spring is sleeved on the connecting post.

13. A quick-lock telescopic rod, characterized in that: Includes an inner tube, an outer tube, and the telescopic locking assembly as described in claim 1; The outer tube is movably fitted onto the inner tube; the clamping seat of the telescopic locking assembly is connected to one end of the inner tube, and each clamping block of the clamping sleeve of the telescopic locking assembly moves against the inner wall of the outer tube.

14. The quick-lock telescopic rod as described in claim 13, characterized in that: The outer side of the clamping block forms a clamping surface that adapts to the inner wall of the outer tube.

Images