A connecting tube and a dust collector

Abstract

The application provides a connecting pipe, which comprises a first section and a second section, the first section is pivotally connected with the second section, and a bending-resistant piece is connected with the first section and the second section respectively, the bending-resistant piece is arranged to be linearly movable, the linearly movable arrangement brings two position changes, which are a locking position and a rotatable position, in the locking position, the first section and the second section are connected with the bending-resistant piece to limit the relative rotation of the first section and the second section, in the rotatable position, the bending-resistant piece is linearly moved to the rotatable position, at this time, the bending-resistant piece is disconnected with one of the first section and the second section to release the relative rotation limitation of the first section and the second section, the application has good bending resistance under the premise of realizing bending control, and a dust collector adopting the connecting pipe is also provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning appliances, in particular to a connecting pipe and a dust collector. BACKGROUND

[0002] A dust collector is generally connected to a working connector through a connecting pipe. In order to better control the dust collection direction, the prior art has proposed a connecting pipe that is different from a hose. The connecting pipe cannot be easily bent, but is provided with a rotating joint. The relative positions between adjacent segments are changed through the rotating joint, so that the user can control the working position of the working connector by rotating the working connector around the rotating joint to adjust the direction, such as a floor cleaning device with publication number CN202020379U. The floor cleaning device comprises: a floor cleaning head; a column rod, which can be connected to the floor cleaning head and comprises two segments; a connector, which can be arranged between the two column rod segments and is arranged to move the two column rod segments between two different angular orientations; the connector comprises a locking element and an opposite disengagement member. In two different angular positions corresponding to the two different angular orientations of the column rod segments, the locking element is biased to a locked position, and the disengagement member can be selectively actuated against the locking element to move the locking element to an unlocked position, thereby achieving angular adjustment of the connector between the two different angular positions.

[0003] The general technical personnel in the industry have also proposed, for example, a turning connector of a dust collector and a handheld dust collector with publication number CN205548452U. The turning connector comprises a first connector pipe and a second connector pipe that are relatively rotatably connected from one end, a connecting pipe for connecting the butt joint ends of the first connector pipe and the second connector pipe that are rotatably connected, and a conductive assembly that is respectively connected in the first connector pipe and the second connector pipe. The connecting pipe is a hose, and the other end of the first connector pipe and the second connector pipe is connected between the dust collection body of the handheld dust collector and the dust collection pipe or between the dust collection pipe and the dust collection head. The present application provides a turning connector, which enables the handheld dust collector to be quickly and vertically arranged, and the operator can achieve multi-angle and omnidirectional dust removal in a natural state, which is very convenient. In addition, the structure is simple and the cost is low.

[0004] For example, the bending and locking mechanism of a vacuum cleaner hose with publication number CN102715871A solves the problem of pivot axis offset, but the structure is extremely complex. The vacuum cleaner tube with publication number CN208114562U simplifies the structure, but requires sufficient space for the press plate 6 to flip outward. In addition, the locking position cannot be flush with the vacuum cleaner tube, that is, the locking position is offset relative to the axis of the vacuum cleaner tube. Furthermore, because the press plate 6 and other flipping structures are required, the angle of the vacuum cleaner tube is limited by the flipping structure.

[0005] As mentioned above, none of the aforementioned technologies address how to improve the bending strength of two relatively bendable column segments (or the first and second connecting pipes) under locked conditions, especially the bending strength when the two column segments are in a straight state (i.e., the two column segments are on the same straight line and locked). Furthermore, as mentioned above, for connecting pipes that require both locking and bendability, there are many influencing factors involved, making improvement difficult. The applicant will continue to research and improve this technology to propose a new technical solution for connecting pipes that achieves good bending resistance while controlling bending. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and propose a connecting pipe that has good bending resistance while achieving bending control; and also proposes a vacuum cleaner that uses the aforementioned connecting pipe.

[0007] Compared with the prior art, the present invention proposes a connecting pipe, including a first segment and a second segment, which are pivotally connected. It also includes an anti-bending member, which can be connected to both the first and second segments. The anti-bending member is linearly movable, resulting in two positional changes: a locked position and a rotatable position. In the locked position, both the first and second segments are connected to the anti-bending member to limit their relative rotation. In the rotatable position, the anti-bending member reaches the rotatable position through linear movement. At this point, the anti-bending member releases the restriction on the relative rotation of the first and second segments by disconnecting from either the first or second segment.

[0008] As an improvement, a locking structure is also included, which is used to lock the bending member to at least one of the first segment and the second segment when in the locked position.

[0009] As an improvement, the locking structure is located at either end of the bending member.

[0010] As an improvement, the locking structure comprises a buckle and a socket, one of the buckle and the socket is arranged on the bending-resistant member, one of the buckle and the socket is provided with an operating part, and the operating part can be used to unlock the buckle and the socket.

[0011] As an improvement, a moving structure is further included, and the moving structure is used to drive the bending-resistant member to automatically move to the rotatable position when the locking of the locking structure is released.

[0012] As an improvement, the moving structure adopts an elastic member, one end of the elastic member is limited, and the other end of the elastic member is connected with the bending-resistant member, and the elastic member drives the bending-resistant member to move to the rotatable position when the locking of the locking structure is released.

[0013] As an improvement, a guiding structure is further included, and the guiding structure is used to guide the bending-resistant member to align with the locking of the locking structure when the bending-resistant member is restored to the locked position.

[0014] As an improvement, a limiting structure is further included, and the limiting structure is used to maintain the bending-resistant member in the locked position when the bending-resistant member is in the locked position, and maintain the bending-resistant member in the rotatable position when the bending-resistant member is in the rotatable position.

[0015] As an improvement, in the locked position, the bending-resistant member, the first segment and the second segment have the same axis.

[0016] As an improvement, the pivoting axes of the first segment and the second segment are centrally arranged, and the pivoting axes intersect with the same axis.

[0017] As an improvement, the bending-resistant member adopts a sleeve, in the locked position, the sleeve is sleeved with the first segment and the second segment, in the rotatable position, the sleeve is unsleeved with one of the first segment and the second segment, and the first segment and the second segment are restored to be relatively rotatable.

[0018] As an improvement, a spring is sleeved in the sleeve, and the spring drives the sleeve to move to the rotatable position when the locking of the locking structure is released.

[0019] As an improvement, the spring is arranged in the sleeve and spaced from one of the first segment and the second segment.

[0020] As an improvement, the spring releases elastic potential energy to drive the sleeve to move to the rotatable position when the locking of the locking structure is released, and the sleeve is located in the segment of the first segment and the second segment in which the spring is arranged.

[0021] As an improvement, the spring adopts a compression spring, and the spring is in a compressed state before the locking of the locking structure is released.

[0022] Compared with the prior art, the present invention has the following advantages when adopting the above structure: The present invention is specially provided with an anti-bending member, which can be connected to the first segment and the second segment respectively. The anti-bending member can be linearly moved, thereby bringing about two position changes: a locked position and a rotatable position. In the locked position, both the first segment and the second segment are connected to the anti-bending member to limit the relative rotation between the first segment and the second segment. In the rotatable position, the anti-bending member reaches the rotatable position by linear movement. At this time, the anti-bending member releases the restriction on the relative rotation between the first segment and the second segment by unconnecting to one of the first segment and the second segment. Therefore, compared with the prior art, it has good anti-bending ability while achieving bending control of the first segment and the second segment, which can well meet the performance requirements of fishing test. The fishing test is the anti-bending test in which the first segment and the second segment are in a linear locked state.

[0023] Compared with the prior art, the present invention also proposes a vacuum cleaner including the above-mentioned connecting tube.

[0024] Compared with the prior art, the present invention has the following advantages when using the above structure: On the one hand, the bending control of the first segment and the second segment is better achieved, which facilitates the use of the vacuum cleaner; on the other hand, it has good bending resistance, that is, it has better stability when the first segment and the second segment are locked in a straight line.

[0025] As an improvement, the first segment is equipped with a first joint, and the second segment is equipped with a second joint, with the first joint on top and the second joint on the bottom. After unlocking, the anti-bending component moves upward along the axis of the first segment to reach a rotatable position; conversely, the locking is restored by moving the anti-bending component downward along the axis of the first segment. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a connecting pipe.

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram after removing the bending resistance component.

[0028] Figure 3 This is a three-dimensional schematic diagram of the first segment.

[0029] Figure 4 This is a three-dimensional schematic diagram of the second segment.

[0030] Figure 5 This is a three-dimensional schematic diagram of the connecting pipe in the locked position.

[0031] Figure 6 This is a three-dimensional diagram of the connecting tube in a rotatable position after unlocking.

[0032] Figure 7This is a three-dimensional schematic diagram of the first and second segments after they have rotated around the pivot connection.

[0033] Figure 8 This is a magnified three-dimensional schematic diagram showing one end of the sleeve.

[0034] Figure 9 This is a magnified three-dimensional schematic diagram showing the other end of the sleeve.

[0035] Figure 10 This is a schematic diagram of the end face of another type of sleeve.

[0036] Explanation of reference numerals in the attached drawings: 1-First segment, 2-Second segment, 3-Anti-bending component, 4-Operating part, 5-Bayonet, 6-Spring limiting end, 7-First ball socket, 8-Second ball socket, 9-Rotating shaft, 10-Shaft hole, 11-First connector, 12-Second connector, 13-Locking connection part, 14-Accommodation part, 15-Flat hole, 16-Hose, 17-Limiting protrusion, 18-Inclined guide part, 19-Limiting surface, 20-Limiting part, 21-Notch. Detailed Implementation

[0037] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The embodiments described below are merely examples, and other obvious variations will arise for those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0038] The present invention will now be described in further detail:

[0039] like Figure 1 As shown, this is a connecting pipe. Specifically, in the locked position, preferably, the axes of the bending-resistant member 3, the first segment 1, and the second segment 2 are coaxial, resulting in a compact structure and a smaller overall radial dimension. Preferably, the bending-resistant member 3 is a sleeve; in the locked position, as shown... Figure 1 , 5 As shown, the sleeve is respectively fitted onto the first segment 1 and the second segment 2, with the sleeve on the outside and the parts of the first segment 1 and the second segment 2 fitted onto the inside of the sleeve. In the rotatable position, as shown... Figure 6 , 7 As shown, the sleeve is disconnected from either the first segment 1 or the second segment 2. In this example, the sleeve is disconnected from the second segment 2. In this way, the first segment 1 and the second segment 2 can rotate relative to each other again. With this design, the structure is relatively simple and can achieve small axial and radial dimensions, but it has strong bending resistance.

[0040] The sleeve can be circumferentially closed, or it can be as follows: Figure 10It is also possible that the structure with axial opening, that is, the sleeve is circumferentially non-closed. The structure of the sleeve can also adopt other forms, for example, the sleeve is provided with holes for weight reduction, forming a sleeve with multiple holes.

[0041] Preferably, a lock structure is further included, which is used to lock at least one of the sleeve and the first segment 1 and the second segment 2 in the locked position, that is, in the locked position, the sleeve is locked with the second segment 2, so that the sleeve, the first segment 1 and the second segment 2 are relatively fixed, and the sleeve cannot move linearly freely, thereby ensuring the reliability and stability of the connecting pipe as a whole in the locked position. Figure 1 、 5 As shown, the sleeve is locked with the second segment 2, so that the sleeve, the first segment 1 and the second segment 2 are relatively fixed, and the sleeve cannot move linearly freely, thereby ensuring the reliability and stability of the connecting pipe as a whole in the locked position.

[0042] Preferably, the lock structure is located at any one of the two ends of the sleeve. In this way, on the one hand, it is convenient to set the lock structure, and on the other hand, it can avoid damaging the circumferential integrity of the bending-resistant member 3 due to the setting of the lock structure, that is, it can avoid damaging the circumferential integrity of the sleeve, which is conducive to providing better 360-degree bending resistance of the sleeve. On the other hand, the foregoing design makes the circumferential integrity of the bending-resistant member 3 better, thereby achieving a shorter axial length while providing a comfortable grip part for the user.

[0043] In this example, in order to further simplify the structure, facilitate the setting of the lock structure at any one of the two ends, and control the overall structure size, the lock structure includes a buckle and a socket 5, the buckle is arranged on the operating part 4, and the operating part 4 is installed on the outer periphery of the bending-resistant member 3, that is, the outer periphery of the sleeve. The operating part 4 adopts a seesaw switch, which is partially accommodated in the accommodating part 14. When one end of the seesaw switch is pressed down, the other end is raised. The other end is provided with the buckle, and the socket 5 is arranged on one of the first segment 1 and the second segment 2, as shown. Figure 2 In order to lock more reliably, the second segment 2 is provided with a locking connecting part 13, which is sleeved and fixed with one end of the second segment 2 close to the first segment 1, and the locking connecting part 13 is circumferentially provided with the socket 5. In this example, the working principle of the lock structure is that the other end of the raised operating part 4 is pressed to unlock the buckle and the socket 5, and when the pressing is released, the seesaw switch is reset.

[0044] Preferably, a moving structure is further included, which is used to drive the anti-bending member 3 to move to the rotatable position automatically when the locking of the locking structure is released, so that the function of automatically opening the anti-bending member 3 after unlocking can be realized, and when the user needs the bending function, the user only needs to press the operation part 4 to unlock, so as to drive the anti-bending member 3 to move to the rotatable position automatically, which greatly facilitates the use of the user. In order to be simple and compact in structure, the moving structure includes a spring to provide the power of automatic opening, one end of the spring is limited, and the other end of the spring is connected with the anti-bending member 3, and when the locking of the locking structure is released, the spring drives the anti-bending member 3 to move to the rotatable position.

[0045] In this example, in order to further simplify the structure, facilitate assembly and control the overall structure size, the sleeve is sleeved with a spring, and when the locking of the locking structure is released, the spring drives the sleeve to move to the rotatable position.

[0046] In this example, the spring is arranged in the interval between the sleeve and one of the first segment 1 and the second segment 2, that is, the spring is only arranged in one of the first segment 1 and the second segment 2, and in this example, the spring is sleeved on the outer periphery of the first segment 1, and the outer periphery of the first segment 1 is provided with a spring limiting end 6. After this design, the moving structure is irrelevant to the second segment 2, that is, no corresponding arrangement needs to be made on the second segment 2 for the arrangement of the moving structure, so that on the one hand, the structure can be further simplified, and on the other hand, the assembly is facilitated, and the installation is relatively simple.

[0047] Preferably, as shown in Figure 6 When the locking of the locking structure is released, the spring releases the elastic potential energy to drive the sleeve to move to the rotatable position, and the sleeve is located in the segment of the first segment 1 and the second segment 2 which is provided with the spring, and in this example, the sleeve is located in the first segment 1. In this way, the assembly can be greatly facilitated, that is, the sleeve and the spring can be installed in the first segment 1 first, and at this time, the pivoting structure is exposed, so that the first segment 1 and the second segment 2 can be conveniently pivotally connected, that is, the above-mentioned arrangement is beneficial to avoiding affecting the assembly of the pivoting structure.

[0048] Preferably, the spring is a compression spring, and before the locking of the locking structure is released, the spring is in a compressed state. In this design, the spring is arranged conveniently, and in addition, in combination with the arrangement of the spring limiting end 6, the compression spring is used, which further facilitates the installation.

[0049] Preferably, the limiting structure is used to limit the sleeve from exceeding the moving position, i.e. in the locked position, the sleeve cannot exceed the bayonet 5, in this case, the end surface of the sleeve cooperates with the end surface of the locking connection 13 to limit the sleeve, and at the same time, the locking structure is used to maintain the sleeve in the locked position, and in the rotatable position, the sleeve cannot further move outward after the compression spring pushes the sleeve away, for example, a limiting baffle is arranged to limit the sleeve from further moving outward, the present application can be further arranged such that in the rotatable position, the sleeve is limited by the limiting baffle and cannot further move outward, if the compression spring still has a certain compression amount, then the sleeve will be better positioned by the compression spring and the limiting baffle, thereby achieving the purpose that the sleeve is not easy to shake in the rotatable position, i.e. maintaining the sleeve in the rotatable position. The limiting structure can also be other structures, for example, two buckle structures are arranged, the first buckle structure is located in the first segment 1, and the second buckle structure is located in the second segment 2, in the locked position, the sleeve is connected and positioned in the locked position by the second buckle structure, and the locking structure is used to strengthen the locking, and in the rotatable position, the sleeve is positioned in the rotatable position by the first buckle structure, at this time, the elastic support of the compression spring is not needed, the first buckle structure can also be replaced by a first elastic ball and a first recessed matching structure, similarly, the second buckle structure can also be replaced by a second elastic ball and a second recessed matching structure, there can also be other structures, which will not be described one by one here.

[0050] In particular, in order to limit the rotation position and facilitate the installation of the first segment 1, the sleeve, the compression spring and the pivot part of the first segment 1, the pivot part corresponds to the first ball socket 7 in this case, the application designs a special structure, specifically, the pivot part is circumferentially provided with an axially arranged inclined guide part 18, which can be two or more symmetrical, the sleeve is provided with a limiting protrusion 17 which can be guided and installed through the inclined guide part 18, the number of limiting protrusions 17 is consistent with the number of inclined guide parts 18 and is arranged one by one, after the limiting protrusion 17 is installed in place, the limiting protrusion 17 can be limited and matched with the limiting surface 19 of the pivot part, after this design, a mounting structure is realized, that is, the first segment 1 is connected with the pivot part first, then the compression spring is sleeved from the end of the first segment 1 away from the pivot part, and then the sleeve is further sleeved from the end, the compression spring is sleeved between the sleeve and the first segment 1, with the sleeve being further sleeved, the limiting protrusion 17 will be guided and installed through the inclined guide part 18 and further pass through the inclined guide part 18 to reach the limiting surface 19 when overcoming the elasticity of the compression spring, at this time, the compression spring is compressed and limited between the limiting part 20 of the sleeve and the spring limiting end 6 provided by the pivot part. Because the compression spring can be compressed, the limiting protrusion 17 can pass through the inclined guide part 18 to reach the limiting surface 19, and under the joint action of the compression spring, the limiting protrusion 17 and the limiting surface 19, the sleeve is limited and stable, and almost no shaking occurs. After the above structure is designed, the technical advantages are: on the one hand, the installation is extremely convenient, and the mutual assembly of the first segment 1, the sleeve, the compression spring and the pivot part is completed through simple installation, and the compression of the compression spring is completed, without the need for special tools for installation, in addition, after installation, calibration measures such as calibration of the compression amount of the compression spring are not required, on the other hand, without the need for additional locking connection part 13 to provide end face cooperation to achieve the purpose of limiting, that is, a larger structure is saved. If the additional locking connection part 13 is provided to provide end face limiting, the first segment 1 will have an extra structure, and the uniformity of the diameter of the first segment 1 will not be good, and one circle of structure will be particularly obvious when the locking position is locked, which will affect the overall appearance, if other structures are adopted, other limiting structures need to be provided on the first segment 1, thereby increasing the structural complexity, in summary, according to the foregoing design, no additional structure needs to be provided on the first segment 1, which greatly simplifies the structure, on the other hand, the convenient and efficient assembly, simple structure and control of the overall size also make the limiting structure hidden inside without being exposed.

[0051] In order to make the limiting convex 17 more easily reach the limiting surface 19, it is also beneficial for the sleeve to move a longer distance in a straight line to expose the pivoting part, and the limiting surface 19 is provided with a notch 21, and the limiting convex 17 can be limited and matched with the notch 21, so that the distance to reach is shortened, and only the notch 21 needs to be reached to complete the assembly.

[0052] Preferably, the pivoting structure adopts a ball socket rotating matching structure, and is provided with a rotating shaft 9 and a shaft hole 10, and the rotating matching of the rotating shaft 9 and the shaft hole 10 defines the relative bending direction of the first segment 1 and the second segment 2, that is, the first segment 1 and the second segment 2 can only rotate relative to the rotating axis of the rotating shaft 9 and the shaft hole 10, and in this case, as shown in Figure 3 、 4 The first segment 1 is provided with a first ball socket 7, and the second segment 2 is provided with a second ball socket 8, the first ball socket 7 and the second ball socket 8 are rotatably matched, and the spherical outer surface of the first ball socket 7 is provided with a rotating shaft 9 on both sides, and the corresponding spherical inner surface of the second ball socket 8 is provided with a shaft hole 10 matched with the corresponding rotating shaft 9, and the rotating shaft 9 and the shaft hole 10 are rotatably matched. After this design, on the one hand, the prior art mainly relies on the rotating matching structure of the rotating shaft 9 and the shaft hole 10 to realize rotation, and the present application not only has the rotating matching of the rotating shaft 9 and the shaft hole 10, but also has the rotating matching of the two ball sockets, so that the stability and reliability of rotation are better, and it is not easy to loosen, and it is beneficial to improve the structural strength. In addition, the above structure design is beneficial to mass production of the first ball socket 7 and the second ball socket 8 by using plastic material, because the first ball socket 7 and the second ball socket 8 made of plastic material are beneficial to improve production efficiency and reduce production cost, but the precision and thickness of the first ball socket 7 and the second ball socket 8 made of plastic material cannot be too high. Therefore, after adopting the above structure, not only the rotating matching of the rotating shaft 9 and the shaft hole 10 is realized, but also the rotating matching of the two ball sockets is realized, which is beneficial to the matching and connection of the first ball socket 7 and the second ball socket 8 made of plastic material, so that better rotating stability and reliability can be achieved. In this way, the purpose of improving production efficiency and reducing production cost can be achieved, and better rotating stability and reliability can be achieved. On the other hand, the prior art needs to set a locking structure around the rotating shaft 9 and the shaft hole 10, so it is not suitable for ball socket rotating matching structure, but the sleeve and ball socket matching structure of the present application is designed, which releases the burden of setting a locking structure for the rotating shaft 9 and the shaft hole 10, so that the ball socket rotating matching structure is more suitable for the present application.

[0053] In this case, as shown in Figure 3 、 4As shown in FIG. 7, one side of the second ball socket 8 is provided with a first opening, which is arranged to allow the first segment 1 and the second segment 2 to relatively rotate through the first opening, and which is also arranged to allow a larger relative rotation angle between the first segment 1 and the second segment 2 on the basis of the ball socket rotation matching structure.

[0054] In this example, the first segment 1 and the second segment 2 are in sealed communication through the hose 16, and therefore, in order to better accommodate the bending of the hose 16 during rotation, the first ball socket 7 is further provided with a second opening, which is arranged to facilitate the assembly of the hose 16 and better accommodate the bending of the hose 16. In this example, the hose 16 is an electrically conductive hose 16, and therefore, the connecting pipe of the present application can simultaneously realize the functions of bending and electrical conduction.

[0055] In this example, the first ball socket 7 and the second ball socket 8 are both approximately symmetrical two parts spliced together, which facilitates production and assembly.

[0056] In addition, in order to ensure reliable connection, the first ball socket 7 and the second ball socket 8 are both provided with a cylindrical portion, the cylindrical portion of the first ball socket 7 after splicing is sleeved and fixed with the first segment 1, and the cylindrical portion of the second ball socket 8 after splicing is sleeved and fixed with the second segment 2.

[0057] In addition, the inner end of the cylindrical portion of the first ball socket 7 also simultaneously serves as a locking connection portion 13, which design eliminates the need for additional spring limiting structure on the first segment 1, and instead solves the problem by the inner end of the cylindrical portion of the first ball socket 7, making the overall structure simple and compact.

[0058] Preferably, the pivot axis of the first segment 1 and the second segment 2 is centrally arranged, and the pivot axis intersects with the same axis, that is, in this example, the pivot axis is not offset relative to the same axis, which has the technical advantages that, on the one hand, the radial dimension can be smaller, and on the other hand, if the hose 16 is used, only a shorter hose 16 is needed to complete the sealed communication of the first segment 1 and the second segment 2 and rotate the same angle. Compared with the offset arrangement, the central arrangement of the pivot axis makes the rotation shaft smaller in radius on the outside of the hose 16, so the stretching degree is smaller. In addition, if the first segment 1 and the second segment 2 are arranged to be able to rotate in both directions, the foregoing design is beneficial to the uniformity of the stretching deformation of the hose 16, avoiding early fatigue rupture and failure of the larger side due to the large stretching degree.

[0059] Further comprising a guide structure, in this example, as shown in FIG. 8, the guide structure is arranged on the first segment 1 and the second segment 2, and is arranged to guide the hose 16 to bend in a certain direction. Figure 8As shown, the guiding structure includes a first segment 1 in the form of a flat tube and a flat hole 15 cooperating with the flat tube, the flat hole 15 being provided in the sleeve, and the guiding structure is used to guide the sleeve to move along the same axis without circumferential rotation through the guiding cooperation of the flat tube and the flat hole 15, so that when the buckle and the socket 5 are re-locked, the guiding structure is used to guide the sleeve to return to the locking position to align the locking structure for locking, and the user can easily lock without special attention. The guiding structure can also be other structures, such as the first segment 1 being provided with a guiding groove and the sleeve being provided with a guiding protrusion, and the guiding groove and the guiding protrusion are guidingly cooperated.

[0060] The anti-bending member 3 can also be other structures, such as a connecting rod, which can be linearly movably connected with the first segment 1 and the second segment 2, and the connecting rod serves as an anti-bending rod member. In general, the anti-bending member 3 in the form of a sleeve is a preferred structure of the present application. Of course, other structures of the anti-bending member 3 can also be used, and any structure of the anti-bending member 3 suitable for the present application can be applied to the present application.

[0061] The scheme of using the connecting pipe of the present application is also beneficial to the simple and concise design of the pipe, that is, it is beneficial to the simple and concise degree of the connecting pipe in the circumferential direction without too many additional visible and protruding structure parts.

[0062] The connecting pipe described in the present application can be used in the dust collector of the prior art, which can be a handheld dust collector, a horizontal dust collector, and the like. The connecting pipe can be used in one or multiple, which can be configured according to the specific use and design requirements.

[0063] One end of the connecting pipe is provided with a first connector 11, and the other end is provided with a second connector 12, the first connector 11 is connected with the main machine of the dust collector, and the second connector 12 is connected with the functional suction head of the dust collector, which can be a floor brush, an edge brush, a dust mite brush, a floor washing brush, and the like.

[0064] In this example, after unlocking, the sleeve moves upward along the axis of the first segment 1 to reach the rotatable position, and since the moving structure is provided, the sleeve is automatically raised, which can be referred to in the description of the first embodiment. Figure 7 It is understood that Figure 7 It can be understood that the connecting pipe of the user in the state of using the dust collector is in a working state of being bent, the first connector 11 is on the top, and the second connector 12 is on the bottom, so it can be seen that the raised sleeve is close to the user, thereby facilitating the user to operate, that is, facilitating the user to push the sleeve back in the reverse direction to restore the locking, and since the compression spring is used, the downward pushing direction is also more labor-saving for the user, and the use experience is better.

[0065] In understanding the present application, if necessary, the above structure can refer to other embodiments / attached drawings Figure 1 It is understood that

[0066] The above merely describes the embodiments of the present application for illustration only, and equivalent changes or modifications made to the configurations, features and principles described in the scope of the present application are included in the scope of the present application.

Claims

1. A connecting pipe, comprising a first segment and a second segment, wherein the first segment and the second segment are pivotally connected, characterized in that, It also includes a bending-resistant component, which can be connected to the first segment and the second segment respectively. The bending-resistant component can be linearly moved, which brings about two position changes: a locked position and a rotatable position. In the locked position, both the first segment and the second segment are connected to the bending-resistant component to limit the relative rotation between the first segment and the second segment. In the rotatable position, the bending-resistant component reaches the rotatable position by linear movement. At this time, the bending-resistant component releases the limitation on the relative rotation between the first segment and the second segment by disconnecting from one of the first segment and the second segment. The bending-resistant component uses a sleeve. In the locked position, the sleeve is sleeved with the first segment and the second segment respectively. In the rotatable position, the sleeve is unsleeved with the second segment, and the first segment and the second segment are restored to being rotatable relative to each other. The pivot section of the first segment is provided with an axially arranged inclined guide in the circumferential direction. There are two or more inclined guides. The sleeve, which is a bending member, is provided with a limiting protrusion that can be guided and installed through the inclined guide. The number of limiting protrusions is the same as the number of inclined guides and they are set one by one. After the limiting protrusion is installed in place, the limiting protrusion can be limited and matched with the limiting surface of the pivot section. A spring is fitted inside the sleeve. The spring is a compression spring, which is fitted between the sleeve and the first segment. As the sleeve is fitted into the pivoting part, the limiting protrusion is guided by the inclined guide and, after overcoming the elasticity of the compression spring, it further passes the inclined guide and reaches the limiting surface. At this time, the compression spring is compressed and is limited between the limiting part of the sleeve and the spring limiting end provided by the pivoting part. Under the combined action of the compression spring, the limiting protrusion, and the limiting surface, the sleeve is stably limited.

2. The connecting pipe according to claim 1, characterized in that, It also includes a locking structure, which is used to lock the bending member to at least one of the first segment and the second segment when in the locked position.

3. The connecting pipe according to claim 2, characterized in that, The locking structure is located at either end of the bending member.

4. The connecting pipe according to claim 2, characterized in that, The lock structure includes a latch and a latch, one of which is located on the anti-bending member, and one of which is provided with an operating part, which can unlock the latch and the latch by operating the operating part.

5. The connecting pipe according to claim 2, characterized in that, It also includes a movable structure, which, when the locking structure is released, drives the anti-bending component to automatically move to the rotatable position.

6. The connecting pipe according to claim 5, characterized in that, The movable structure uses an elastic element, which is limited at one end and connected to the anti-bending element at the other end. When the locking structure is released, the elastic element automatically drives the anti-bending element to the rotatable position.

7. The connecting pipe according to claim 2, characterized in that, It also includes a guide structure that guides the anti-bending member back to the locked position so that the lock structure is aligned and locked.

8. The connecting pipe according to claim 1, characterized in that, It also includes a limiting structure that keeps the bending member in the locked position when it is in the locked position and in the rotatable position when it is in the rotatable position.

9. The connecting pipe according to claim 1, characterized in that, In the locked position, the axes of the bending member, the first segment, and the second segment are the same.

10. The connecting pipe according to claim 9, characterized in that, The pivot axes of the first and second segments are centered and intersect with the same axis.

11. The connecting pipe according to claim 1, characterized in that, When the locking mechanism is released, the spring moves the sleeve to the rotatable position.

12. The connecting pipe according to claim 11, characterized in that, Before the locking mechanism is released, the spring is in a compressed state.

13. A vacuum cleaner employing the connecting tube according to any one of claims 1 to 12, characterized in that, The vacuum cleaner includes the connecting tube.

14. The vacuum cleaner according to claim 13, characterized in that, The first segment has a first connector, and the second segment has a second connector. The first connector is on top and the second connector is on the bottom. After unlocking, the anti-bending component moves upward along the axis of the first segment to reach a rotatable position. Conversely, the locking is restored by moving the anti-bending component downward along the axis of the first segment.

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