Matched connection structure between adjacent pipe sections of dust collector pipe

Abstract

The utility model discloses a matching connection structure between adjacent pipe sections of a dust collector pipe, which is characterized by comprising a first matching joint and a second matching joint which are respectively arranged on opposite end parts of two adjacent pipe sections, and a locking mechanism for axial locking is arranged between the first matching joint and the second matching joint; the first matching connector comprises an insertion pipe part used for being inserted into the second matching connector, a limiting protrusion is arranged on the outer wall of the insertion pipe part, and the outer walls of the two sides of the limiting protrusion are of an inverted-splayed inclined plane structure. The second matching connector is provided with an inserting cavity for the inserting pipe part to be inserted, the inserting cavity is provided with a limiting notch matched with the limiting protrusion, and the inner walls of the two sides of the limiting notch are of an inclined plane structure arranged in an upright splayed shape. Rotation between the adjacent pipe sections is limited through matching of the forward and reverse splayed wall face structures, and the matching stability and reliability between the pipe sections are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaner hoses, and particularly relates to a mating connection structure between adjacent hose segments of a vacuum cleaner hose. Background Art

[0002] Household vacuum cleaners generally include a vacuum cleaner main body, a suction hose, and a floor brush. The suction hose is a pipe used to connect the floor brush and the vacuum cleaner main body into one body, so that dust on the ground can enter the vacuum cleaner main body from the floor brush and the suction hose.

[0003] Generally, the suction hose has a relatively long length to facilitate the user to move the floor brush to a higher or deeper position for easier use. At the same time, for the convenience of storage and storage of the suction hose, the suction hose is mostly designed as a telescopic hose structure or a multi-segment hose structure that can be spliced. For the adjacent hose segments of the existing multi-segment suction hose, an axial separation is restricted by a locking mechanism, and rotation is restricted by the cooperation of a limiting protrusion and a limiting notch. However, the existing limiting protrusions and limiting notches are mostly conventional strip-shaped structures, and the cooperation stability and reliability between the two are relatively poor. Relative rotation is likely to occur between the hose segments, and even the situation where the limiting protrusion rotates out of the limiting notch may occur, so there is room for improvement. Summary of the Utility Model

[0004] The utility model aims to overcome the above-mentioned defects in the prior art and provides a mating connection structure between adjacent hose segments of a vacuum cleaner hose. The adjacent hose segments are constrained by the cooperation of inverted and upright eight-shaped wall structures, effectively avoiding rotation and greatly improving the cooperation stability and reliability between the hose segments.

[0005] To achieve the above object, the utility model provides a mating connection structure between adjacent hose segments of a vacuum cleaner hose, including a first mating joint and a second mating joint respectively arranged on the opposite end parts of adjacent two hose segments. A locking mechanism for axial locking is arranged between the first mating joint and the second mating joint;

[0006] The first mating joint includes an insertion tube part for inserting into the second mating joint. The outer wall of the insertion tube part is provided with a limiting protrusion, and the outer walls on both sides of the limiting protrusion are inclined plane structures arranged in an inverted "eight" shape;

[0007] The second mating joint has a plugging cavity for the insertion tube part to insert. The plugging cavity has a limiting notch that cooperates with the limiting protrusion, and the inner walls on both sides of the limiting notch are inclined plane structures arranged in an upright "eight" shape.

[0008] It is further set that the angle formed by the outer wall surface of the limiting protrusion and the vertical plane is 10° - 15°;

[0009] and / or the included angle formed by the inner side wall surface of the limiting notch and the vertical plane is 10°-15°.

[0010] Further, it is set that: the first fitting joint includes a first fitting end face facing and fitting with the second fitting joint, and the first fitting end face is of an inclined plane structure;

[0011] The second fitting joint includes a second fitting end face facing and fitting with the first fitting joint, and the second fitting end face is of an inclined plane structure adapted to the first fitting end face.

[0012] Further, it is set that: a locking member is pivotally mounted on the second fitting joint, one end of the locking member is provided with a hook portion and the other end is a pressing portion, and an elastic member is arranged at the pressing portion of the locking member so that the pressing portion always has a tendency to tilt upward;

[0013] A fitting structure for hooking with the hook portion of the locking member is correspondingly arranged on the insertion tube portion of the first fitting joint.

[0014] Further, it is set that: the second fitting joint includes an inner housing having an insertion cavity structure, a rotary joint seat is constructed on the outer wall of the inner housing corresponding to the limiting notch, the middle portion of the locking member is rotatably mounted in the rotary joint seat, and a first opening for the hook portion to extend into and hook with the fitting structure on the insertion tube portion is correspondingly opened on the bottom wall of the limiting notch;

[0015] The limiting protrusions on the insertion tube portion are two axially extending and spaced-apart limiting ribs, and a connecting rib is arranged between the ends of the two limiting ribs corresponding to and close to the second fitting joint, and the connecting rib is used for the hook portion of the locking member to hook.

[0016] Further, it is set that: the second fitting joint further includes an outer housing fixedly arranged outside the inner housing, a second opening is opened on the outer housing corresponding to the pressing portion of the locking member, and a button is rotatably mounted in the outer housing corresponding to the second opening, and when pressing the button downward, it can act on the pressing portion of the locking member to make the hook portion at the other end tilt up to realize unlocking.

[0017] Compared with the prior art, the utility model has a simple and reasonable structure, and the adjacent pipe sections are constrained by the cooperation of the forward and reverse eight-shaped wall surface structures, effectively avoiding rotation, and greatly improving the cooperation stability and reliability between the pipe sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a vacuum cleaner tube of the utility model;

[0019] Figure 2 is Figure 1 the structural diagram after the axial separation of the pipe sections in

[0020] Figure 3 is a schematic axial sectional structure diagram of a vacuum cleaner tube;

[0021] Figure 4 is a schematic radial sectional view of the corresponding limiting protrusion and limiting notch of the vacuum cleaner tube.

[0022] Mark the following reference numerals on the drawings in combination:

[0023] 100, the first pipe section; 200, the second pipe section; 300, the first mating joint; 310, the first mating end face; 320, the insertion pipe part; 321, the limiting rib; 322, the connecting rib; 400, the second mating joint; 410, the inner housing; 411, the insertion cavity; 412, the limiting notch; 420, the outer housing; 430, the locking member; 431, the hook part; 432, the pressing part; 433, the elastic member; 440, the button; 450, the second mating end face. Specific embodiments

[0024] Next, in combination with the drawings, a specific embodiment of the present invention will be described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0025] A vacuum cleaner tube of the present invention is as Figure 1 and Figure 2 shown, and at least includes a first pipe section 100, a second pipe section 200, and a mating connection structure provided between the first pipe section 100 and the second pipe section 200. The mating connection structure includes a first mating joint 300 provided at the rear end of the first pipe section 100, and a second mating joint 400 provided at the front end of the second pipe section 200. The first mating joint 300 and the second mating joint 400 are detachably mated and connected, and a locking mechanism is provided between them. The locking mechanism is used to limit the axial separation of the first mating joint 300 and the second mating joint 400 to ensure their reliable connection.

[0026] In this embodiment, as Figure 2As shown, the first mating connector 300 includes a first mating end face 310 facing and mating with the second mating connector 400, and an insertion tube portion 320 provided on the first mating end face 310; the second mating connector 400 includes a second mating end face 450 facing and mating with the first mating connector 300, and an insertion cavity 411 is constructed inside the second mating connector 400 for the insertion tube portion 320 to be inserted; in this way, the insertion tube portion 320 of the first mating connector 300 is inserted into the insertion cavity 411 of the second mating connector 400, the first mating end face 310 and the second mating end face 450 are abutted and locked by a locking mechanism to achieve reliable connection between the two; preferably, the first mating end face 310 and the second mating end face 450 are adapted inclined plane structures, so that the insertion of the two connectors is facilitated.

[0027] In this embodiment, as Figure 4 shown, a limit protrusion is provided on the outer wall of the insertion tube portion 320 of the first mating connector 300, and the outer walls on both sides of the limit protrusion are inclined plane structures arranged in an inverted "eight" shape; the insertion cavity 411 of the second mating connector 400 has a limit notch 412 that mates with the limit protrusion, and the inner walls on both sides of the limit notch 412 are inclined plane structures arranged in a right-side-up "eight" shape; in this way, the rotation between the pipe segments can be effectively restricted through the cooperation of the positive and inverted "eight" shaped wall surfaces, and the "eight" shaped mating structure can achieve the effect of getting tighter and tighter, so as to avoid the situation of rotational disengagement between the limit protrusion and the limit notch 412, greatly ensuring the mating stability and reliability of adjacent pipe segments.

[0028] In the above solution, preferably, the angle between the outer wall surface of the limit protrusion and the vertical plane is 10° - 15°; and / or, the angle between the inner wall surface of the limit notch 412 and the vertical plane is 10° - 15°.

[0029] In this embodiment, as Figure 2 and Figure 3 shown, the locking mechanism includes a locking member 430 pivotally mounted on the second mating connector 400, and a corresponding mating structure provided on the insertion tube portion 320 of the first mating connector 300; one end of the locking member 430 is constructed with a hook portion 431 for hooking with the mating structure and the other end is a pressing portion 432, and an elastic member 433 (spring) is provided at the pressing portion 432 of the locking member 430 so that the pressing portion 432 always has an upward tilting movement tendency, so that the hook portion 431 can stably maintain a hooked state with the mating structure.

[0030] Specifically, the limiting protrusion on the insertion tube portion 320 of the first mating connector 300 is two axially extending and spaced-apart limiting ribs 321, and a connecting rib 322 is provided between the two limiting ribs 321 corresponding to the ends close to the second mating connector 400, and the connecting rib 322 is used for hooking the hook portion 431 of the locking member 430.

[0031] Specifically, Figure 3 As shown, the second mating connector 400 includes an inner housing 410 having an inserting cavity 411 structure, and an outer housing 420 fixedly arranged outside the inner housing 410; a rotating seat is constructed at the outer wall of the inner housing 410 corresponding to the limiting notch 412, and the middle two sides of the locking member 430 are rotatably installed in the rotating seat through a rotating shaft, and a first opening for the hook portion 431 to extend into to be hooked with the matching structure on the insertion tube portion 320 is correspondingly opened on the bottom wall of the limiting notch 412; the pressing portion 432 of the outer housing 420 corresponding to the locking member 430 A second opening is opened at the place, and a button 440 is rotatably installed in the outer shell 420 corresponding to the second opening. When the button 440 is pressed downward, it can act on the pressing portion 432 of the locking member 430 to make the hook portion 431 at the other end tilt up to achieve unlocking; preferably, in the absence of external force, the button 440 is just engaged with the wall surface of the outer shell 420 under the pushing action of the pressing portion 432 that is tilted up by the elastic member 433 to block the second opening, thereby greatly improving the integrity and aesthetics of the second mating joint 400, thereby greatly improving the integrity and aesthetics of the second mating joint 400.

[0032] Compared with the prior art, the utility model has a simple and reasonable structure, and adjacent pipe sections are restrained by positive and negative eight-shaped wall structures, which effectively avoids rotation and greatly improves the matching stability and reliability between the pipe sections.

[0033] The above disclosure is only an embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A mating connection structure between adjacent pipe segments of a vacuum cleaner tube, characterized in that, It includes a first mating joint and a second mating joint respectively arranged on the facing ends of two adjacent pipe segments, and a locking mechanism for axial locking is arranged between the first mating joint and the second mating joint; The first mating joint includes an insertion tube portion for inserting into the second mating joint. A limiting protrusion is arranged on the outer wall of the insertion tube portion, and the outer walls on both sides of the limiting protrusion are inclined surface structures arranged in an inverted "eight" shape; The second mating joint has a socket cavity for the insertion tube portion to insert. The socket cavity has a limiting notch that cooperates with the limiting protrusion, and the inner walls on both sides of the limiting notch are inclined surface structures arranged in a right-side-up "eight" shape.

2. The mating connection structure between adjacent pipe segments of a vacuum cleaner pipe according to claim 1, wherein The angle formed by the outer wall surface of the limiting protrusion and the vertical plane is 10°-15°; and / or the angle formed by the inner wall surface of the limiting notch and the vertical plane is 10°-15°.

3. The mating connection structure between adjacent pipe segments of a vacuum cleaner pipe according to claim 1, characterized in that, The first mating joint includes a first mating end face facing the second mating joint and cooperating with it, and the first mating end face is an inclined surface structure; The second mating joint includes a second mating end face facing the first mating joint and cooperating with it, and the second mating end face is an inclined surface structure adapted to the first mating end face.

4. The mating connection structure between adjacent pipe segments of a vacuum cleaner pipe according to claim 1, characterized in that, A locking member is pivotally installed on the second mating joint. One end of the locking member is configured with a hook portion and the other end is a pressing portion. An elastic member is arranged at the pressing portion of the locking member so that the pressing portion always has a tendency to tilt upward; A mating structure for hooking with the hook portion of the locking member is correspondingly arranged on the insertion tube portion of the first mating joint.

5. The mating connection structure between adjacent pipe segments of a vacuum cleaner pipe according to claim 4, characterized in that, The second mating joint includes an inner housing with a socket cavity structure. A rotary joint seat is configured on the outer wall of the inner housing corresponding to the limiting notch. The middle of the locking member is rotatably installed in the rotary joint seat. A first opening for the hook portion to extend into and hook with the mating structure on the insertion tube portion is correspondingly opened on the bottom wall of the limiting notch; The limiting protrusions on the insertion tube portion are two axially extending and spaced-apart limiting ribs. A connecting rib is arranged between the ends of the two limiting ribs corresponding to being close to the second mating joint, and the connecting rib is used for the hook portion of the locking member to hook.

6. The mating connection structure between adjacent pipe segments of a vacuum cleaner pipe according to claim 5, characterized in that The second mating joint further includes an outer housing fixedly arranged outside the inner housing. A second opening is opened on the outer housing corresponding to the pressing portion of the locking member. A button is rotatably installed in the second opening of the outer housing. During the process of pressing down the button, it can act on the pressing portion of the locking member to make the hook portion at the other end tilt up to achieve unlocking.

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