A connecting tube and a dust collector

Abstract

The application provides a connecting pipe, which comprises coaxial first, hose and second segments, the first segment is provided with an operating part and a lock tongue arranged along the circumference of the first segment, the operating part is used to drive the lock tongue to move along the axis direction of the first segment; the second segment is provided with a lock disc located on the side of the hose, the axis of the lock disc intersects with the coaxial line, the outer circumference of the lock disc is provided with a first matching part which can be locked / unlocked with the lock tongue, and the first matching part adopts a lock hole or a lock groove; the application can significantly reduce the structural complexity, improve the structural compactness, reduce the transverse volume, meet the design requirement of non-biased structure, and facilitate the simple design of the pipe, that is, the connecting pipe circumference does not have too many additional visible and protruding structure parts, and the simplicity degree of the connecting pipe circumference is higher; and the application also provides a dust collector adopting the connecting pipe.

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] The dust collector is generally connected with a working connector through a connecting pipe. In order to better control the dust collection direction, the prior art has proposed a connecting pipe different from the hose, which cannot be easily bent, but is provided with a rotating joint to change the relative position between adjacent segments, 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 the authorization announcement number CN202020379U, which 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 arranged to move the two column rod segments between two different angular orientations; the connector comprises a locking element and an opposite disengagement member, which is biased to a locked position in two different angular positions corresponding to the two different angular orientations of the column rod segments, and the disengagement member can be selectively actuated against the locking element to move the locking element to an unlocked position, thereby realizing the angular adjustment of the connector between the two different angular positions.

[0003] The foregoing patent technical solution, although it realizes good angle change and reliable locking, has a relatively large structure, which requires a large space to install the locking and adjusting structure, and in addition, the patent technical solution cannot set up a hose as a connecting part at the rotating joint. If a hose is set up, the locking structure will not be applicable, and if it is forced to be applicable, further innovation and improvement are needed.

[0004] In order to adopt the hose, the general skilled person in the art proposes, for example, a turning joint of a dust collector and a handheld dust collector with the publication number CN205548452U, which comprises a first connecting pipe and a second connecting pipe relatively rotatably connected from one end, a connecting pipe for connecting the opposite end of the first connecting pipe and the second connecting pipe, and a conductive assembly respectively located in the first connecting pipe and the second connecting pipe in communication. The connecting pipe is a hose, and the other end of the first connecting pipe and the second connecting pipe respectively connects the dust collection body of the handheld dust collector and the dust collection pipe or the dust collection pipe and the dust collection head. The utility model discloses a turning joint, which can quickly and vertically set the handheld dust collector, and the operator can realize 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. As can be seen from the above, although the hose is adopted, no locking structure is provided. In the case of providing a hose, it is difficult to set the locking structure. In addition, from the prior art, the locking structure is rarely provided when the hose is used as the connecting pipe. The technical solution of setting the locking structure mainly includes setting a lock on one side and a rotating part on the opposite side, such as a dust collector and a bendable connecting pipe with the publication number CN209186556U. This setting of the locking structure is relatively convenient and can effectively avoid the locking structure from occupying the space of the hose. However, it can only be bent to one side and cannot be bent to the opposite side. In addition, the rotating shaft of the lock and the rotating shaft of the rotating part are offset. In addition, the overall structure has a relatively large volume. As can be seen from the foregoing, in the case of providing a hose, how to set the locking structure has many influencing factors. It is difficult to design a specific scheme.

[0005] For example, a foldable dust collector suction pipe and a dust collector with the same with the publication number CN208573597U has a similar basic idea as before, which also offsets the rotating shaft of the rotating part, that is, the rotating shaft is offset from the coaxial line of the first suction pipe 10, the connecting pipe 30, and the second suction pipe 11 in a straight state. This also changes the rotation characteristics. In addition, the overall structure has a relatively large lateral volume.

[0006] The offset of the rotating shaft also has an additional problem. If it is set to be reversible, the drawing depth of the hose in different directions during rotation is different, which is not conducive to the uniformity of the stretching deformation of the hose, and the side with a larger stretching degree may fail early.

[0007] And the publication number CN102715871A a kind of bending and locking mechanism of dust collection hose, although solve the bias problem, but the structure is exceptionally complex, and the publication number CN208114562U a kind of dust collector long pipe, although simplify structure, but need to be enough for pressing plate 6 outwardly turned on the space, in addition, locking fit position cannot be done with dust collector long pipe flush, that is, locking fit position is offset relative to the axis of dust collector long pipe, in addition, since it needs to set up pressing plate 6 and so on overturning structure, so as to lead to dust collector long pipe angle change to be limited by overturning structure.

[0008] From the above, the connecting pipe described in the present application has certain difficulties, and there are many influencing factors. The present applicant will continue to research and improve it, so as to propose a new technical scheme of connecting pipe. The new technical scheme can significantly reduce the structural complexity, improve the structural compactness, and meet the design requirement of non-biased structure. SUMMARY

[0009] The technical problem to be solved by the present application is to overcome the defects of the prior art and to propose a connecting pipe that can significantly reduce the structural complexity, improve the structural compactness, reduce the transverse volume, meet the design requirement of non-biased structure, and facilitate the tubular simple design. In other words, it is beneficial to have fewer additional visible and protruding structure parts around the connecting pipe, and the simplicity of the connecting pipe is higher. A dust collector using the aforementioned connecting pipe is also proposed.

[0010] Compared with the prior art, the present application proposes a connecting pipe comprising a coaxial first segment, a hose and a second segment. The first segment is pivotally connected to the second segment. One end of the hose is in communication with the first segment, and the other end of the hose is in communication with the second segment. The first segment is provided with an operating part and a lock tongue arranged along the circumference of the first segment. The operating part is used to move the lock tongue along the axis direction of the first segment. The second segment is provided with a lock disc located on the side of the hose. The axis of the lock disc intersects with the coaxial axis at right angles. The outer periphery of the lock disc is provided with a first matching part that can be locked / unlocked with the lock tongue. The first matching part adopts a lock hole or a lock groove.

[0011] As an improvement, the first segment comprises a first sleeve and a first core. The first sleeve is connected to the first core in a sleeved manner. The second segment comprises a second sleeve and a second core. The second sleeve is connected to the second core in a sleeved manner. One end of the hose is in communication with the first core, and the other end of the hose is in communication with the second core. The second sleeve is provided with a lock disc at one end located on one side of the first sleeve.

[0012] As an improvement, the lock tongue is located between the first sleeve and the first core.

[0013] As an improvement, the first sleeve is provided with axial extensions at one end on the side of the second sleeve, and the axial extensions are arranged in transverse opposition, and correspondingly, the second sleeve is provided with second matching parts at one end on the side of the first sleeve, which are rotationally connected with the axial extensions, and the rotation axis of the rotational connection is the same as the axis of the lock disc.

[0014] As an improvement, the at least one second matching part is the lock disc.

[0015] As an improvement, the second matching part is an integral part integrally formed with the second sleeve, and the axial extension is an integral part integrally formed with the first sleeve.

[0016] As an improvement, the first sleeve, the first core, the second sleeve and the second core are all integral parts integrally formed.

[0017] As an improvement, the rotational connection is provided with a wire passing through hole penetrating the axial extension and the second matching part, and a baffle is arranged between the wire passing through hole and the hose, which isolates the cable from the hose.

[0018] As an improvement, the axial extension and the second matching part are in transverse superposition inside and outside, the side of the axial extension on the side of the hose is provided with a matching groove, one end of the baffle is fixedly connected with the first core, the baffle is in matching connection with the matching groove, and the baffle serves as an isolating part of the cable and also as a reinforcing part of the axial extension.

[0019] As an improvement, the matching groove is provided as an open groove in a general horn shape in a transverse view, which is used for: when the first sleeve is sleeved with the first core, the baffle is inserted into the open groove of the axial extension along the axis of the first sleeve together with the first core.

[0020] As an improvement, the axial extension is designed to be axially extended with the width decreasing to the side of the second sleeve.

[0021] As an improvement, the operation part adopts a first moving structure in which a first operation part moves transversely to drive the lock tongue to move along the axis of the first segment, or the operation part adopts a second moving structure in which a second operation part moves axially to drive the lock tongue to move along the axis of the first segment.

[0022] As an improvement, the first moving structure comprises a button and a transverse linkage, the first sleeve is provided with a first matching hole which is movably matched with the button, the transverse linkage is arranged across the circumference of the first core body, the button is transversely connected with the transverse linkage, a first guide structure is arranged between the first sleeve and the first core body, the first guide structure is guided matched with the transverse linkage, the transverse linkage is provided with a first guide inclined surface, the lock tongue is provided with a second guide inclined surface which is slidably matched with the first guide inclined surface, the button is used to drive the transverse linkage to move transversely, the transverse movement drives the first guide inclined surface to drive the second guide inclined surface to move axially, and the axial movement can drive the lock tongue to move along the axis direction of the first segment.

[0023] As an improvement, a first reset spring is further arranged, the first reset spring is arranged along the axis direction of the first segment and in the circumference of the first core body, one end of the first reset spring is limited, the other end of the first reset spring is connected with the lock tongue and can move with the lock tongue, and the first reset spring is used to drive the lock tongue to reset to the side of the second sleeve.

[0024] As an improvement, a second reset spring is further arranged, the second reset spring is arranged between the button and the first core body, one end of the second reset spring is limited, the other end of the second reset spring is connected with the button or the transverse linkage or both the button and the transverse linkage, and the second reset spring is used to drive the button and the transverse linkage to reset to the outside.

[0025] As an improvement, a second guide structure is arranged between the first sleeve and the first core body, the second guide structure is guided matched with the lock tongue, and the second guide structure is used to guide the lock tongue to move along the axis direction of the first segment.

[0026] As an improvement, the second moving structure comprises an axial moving sleeve and a transverse piece which is transversely connected with the axial moving sleeve, the first sleeve is sleeved matched with the axial moving sleeve, the first sleeve is provided with a second matching hole which is movably matched with the transverse piece, the second matching hole is arranged along the axis direction of the first sleeve, the transverse piece can move along the axis direction of the first sleeve in the second matching hole, the transverse piece is connected with the lock tongue, and the axial moving sleeve drives the lock tongue to move along the axis direction of the first segment through the transverse piece.

[0027] As an improvement, a transverse limiting structure is arranged between the lock tongue and the first matching part, and the transverse limiting structure is used to limit the lock tongue to deviate to one side of the transverse direction after the lock tongue is matched with the first matching part.

[0028] As an improvement, the transverse limiting structure is used to limit the lock tongue to deviate to the inner side of the transverse direction after the lock tongue is matched with the first matching part.

[0029] As an improvement, the lock tongue is provided with a lock head, the first matching part is provided with a blocking part on one side of the hose, and the inner side surface of the lock head is blocked by the blocking part after the lock tongue is matched with the first matching part.

[0030] As an improvement, the outer periphery of the lock disc is further provided with a temporary matching part lockable / unlockable with the lock tongue, and the temporary matching part is provided with the blocking part.

[0031] With the above structure, compared with the prior art, the application has the following advantages: the application is ingeniously designed, including a coaxial first segment, a hose and a second segment, the first segment is pivotally connected with the second segment, one end of the hose is in communication with the first segment, the other end of the hose is in communication with the second segment, the first segment is provided with an operation part and a lock tongue arranged along the circumference of the first segment, the operation part is used to drive the lock tongue to move along the axis direction of the first segment; the second segment is provided with a lock disc located at the side of the hose, the axis of the lock disc crosses the coaxial line, the outer periphery of the lock disc is provided with a first matching part lockable / unlockable with the lock tongue, the first matching part adopts a lock hole or a lock groove; in this way, the structural complexity can be significantly reduced, at the same time, the structural compactness can be improved, the transverse volume can be reduced, in addition, the design requirement of non-biased structure can be met, in addition, the tubular simple design can be facilitated, that is, the circumferential simple degree of the connecting pipe can be higher.

[0032] Compared with the prior art, the application further provides a dust collector comprising the connecting pipe.

[0033] With the above structure, compared with the prior art, the application has the following advantages: the connecting pipe can significantly reduce the structural complexity, in addition, the operation convenience can be facilitated, and the cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a perspective view of a connecting pipe.

[0035] Figure 2 It is a perspective view of a connecting pipe with one side cover plate removed.

[0036] Figure 3 It is Figure 2 It is a perspective view from the top view angle.

[0037] Figure 4 It is Figure 2 It is a perspective view with the first sleeve further removed.

[0038] Figure 5 It is Figure 4 It is a perspective view with the first core further removed.

[0039] Figure 6 It is Figure 5 It is a perspective view with one side lock tongue further removed.

[0040] Figure 7 It is Figure 5Schematic perspective view from below.

[0041] Figure 8 Schematic perspective view from below. Figure 4 Schematic perspective view from below.

[0042] Figure 9 Schematic perspective view from below.

[0043] Figure 10 Schematic perspective view from below.

[0044] Figure 11 Schematic perspective view from below.

[0045] Figure 12 Schematic perspective view from below.

[0046] Figure 13 Schematic perspective view from below.

[0047] Figure 14 Schematic perspective view from below.

[0048] Figure 15 Schematic perspective view from below. Figure 14 Schematic perspective view from below.

[0049] Figure 16 Schematic perspective view from below.

[0050] Figure 17 Schematic perspective view from below.

[0051] Explanation of reference numerals, 1 - hose, 2 - lock tongue, 3 - lock disc, 4 - first fitting portion, 5 - first sleeve, 6 - first core, 7 - second sleeve, 8 - second core, 9 - axial extension, 11 - threading through hole, 12 - baffle, 13 - fitting groove, 14 - button, 15 - transverse linkage, 16 - first fitting hole, 17 - first guide inclined surface, 18 - first return elastic member, 19 - second return elastic member, 20 - first guide groove, 21 - first guide surface, 22 - fitting opening, 23 - decorative cover, 24 - circumferential portion, 25 - cable, 26 - connecting rib, 27 - temporary fitting portion, 28 - clamping portion, 29 - fitting pivot, 30 - fitting shaft hole, 31 - bayonet, 32 - limiting member, 33 - gland, 34 - terminal, 35 - guide inclined surface, 36 - lock head, 37 - blocking portion, 38 - inner side surface. DETAILED DESCRIPTION

[0052] 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.

[0053] The present invention will now be described in further detail:

[0054] like Figure 1 As shown, a connecting pipe includes a first segment, a flexible hose 1, and a second segment, all coaxial. The first and second segments are pivotally connected. One end of the flexible hose 1 is connected to the first segment, and the other end is connected to the second segment. The first segment has an operating part and a locking tongue 2 arranged circumferentially along the first segment. The operating part is used to move the locking tongue 2 along the axial direction of the first segment. The second segment has a locking disc 3 located on the side of the flexible hose 1. The axis of the locking disc 3 intersects the coaxial axis. The outer periphery of the locking disc 3 has a first mating part 4 that can lock / unlock the locking tongue 2. The first mating part 4 is a lock hole or a lock groove. In this example, the first mating part 4 is a lock groove. As can be seen from the foregoing, this application is a non-biased solution, and since the locking tongue 2 mates with the outer periphery of the locking disc 3, the locking strength is high. Furthermore, the technical feature that the axis of the locking disc 3 intersects with the coaxial cross is not necessarily required to be completely intersecting. The two axes may be close to each other, which is also a situation defined by the intersection of the axis of the locking disc 3 with the coaxial cross as referred to in this application.

[0055] Depend on Figure 1 It can be seen that the connecting pipe obtained under the technical solution of this application has good control over its lateral volume, and the connecting pipe as a whole is relatively regular, without the need for too many circumferential protruding structures, irregular structures, or movable structures. In addition, in order to further achieve the aforementioned regularity, in the specific solution, this application is designed as follows: the first segment includes a first sleeve 5 and a first core 6, the first sleeve 5 and the first core 6 are sleeved together; the second segment includes a second sleeve 7 and a second core 8, the second sleeve 7 and the second core 8 are sleeved together; one end of the flexible hose 1 is connected to the first core 6, and the other end of the flexible hose 1 is connected to the second core 8; a locking disc 3 is provided at one end of the second sleeve 7 located on one side of the first sleeve 5. In this example, in order to facilitate the installation of the flexible hose 1 and to ensure better installation and fixation, both the first core 6 and the second core 8 are provided with multiple annular connecting ribs 26.

[0056] In addition, the locking tongue 2 is located between the first sleeve 5 and the first core 6. By utilizing the connection structure where the first sleeve 5 and the first core 6 are sleeved together, the problems of accommodating the locking tongue 2, installing it, and guiding it (as described below) are solved. This allows for more ingenious control of the lateral volume and simplifies production and assembly.

[0057] As shown in Figure 9 、 10 , the first sleeve 5 is provided with axial extensions 9 at one end on the side of the second sleeve 7, the axial extensions 9 are two oppositely arranged, and the second sleeve 7 is provided with a second matching part at one end on the side of the first sleeve 5, which is rotationally connected with the axial extensions 9, and the rotation axis of the rotationally connected is the same as the axis of the lock disc 3. In order to realize the rotationally connected, each axial extension 9 is provided with a matching rotation shaft 29 protruding outward, and the second matching part is provided with a matching shaft hole 30, the matching rotation shaft 29 is rotationally matched with the matching shaft hole 30, and then a limiting part 32 is connected and limited by a screw, so as to complete the rotationally matched. In order to make the matching rotation shaft 29 and the matching shaft hole 30 easily matched, the present application is provided with a guide slope 35 in front of the matching rotation shaft 29, so that when the first sleeve 5 and the second sleeve 7 are assembled by moving axially towards each other, the matching rotation shaft 29 and the matching shaft hole 30 are more easily matched by the guide slope 35, and this design is also beneficial to the following convenient installation. In this way, the pivotal connection of the first segment and the second segment is realized by the rotationally matched first sleeve 5 and second sleeve 7.

[0058] As can be seen from the above, the first sleeve 5, the second sleeve 7, the first core 6 and the second core 8 each play its own role, that is, the first core 6 and the second core 8 do not need to be additionally provided, thus on the one hand simplifying the structure and on the other hand facilitating the convenient assembly of the structure.

[0059] In order to further reduce the transverse width and simplify the structure, the present application directly takes the second matching part as the lock disc 3, wherein at least one second matching part is taken as the lock disc 3, in this example, both second matching parts are taken as the lock disc 3, and reference is made to Figure 11 , in this way, the locking force is more balanced and the locking is more reliable.

[0060] In this example, as shown in Figure 10 、 11 , the second matching part is an integral part integrally formed with the second sleeve 7, and the axial extension 9 is an integral part integrally formed with the first sleeve 5. In this way, there is no need for splicing or connection, but it is integrated, on the one hand the structural strength is good, on the other hand the appearance is regular, and on the other hand it is convenient for production, and the integral forming is, for example, injection molding.

[0061] In order to better integrate, the first sleeve 5, the first core 6, the second sleeve 7 and the second core 8 are all integral parts integrally formed. In this way, there is no need for splicing or connection, but it is integrated, on the one hand the structural strength is good, on the other hand it is convenient for production, and the integral forming is, for example, injection molding.

[0062] Different from the prior art, the integrally formed structure design can be applied to the application due to the innovative design of the application, and the integrally formed structure design in turn further promotes the performance and production and assembly convenience of the application, and the two technologies complement each other.

[0063] The rotating connection is provided with a threading through hole 11 penetrating the axial extension 9 and the second matching part, and a baffle 12 is arranged between the threading through hole 11 and the hose 1, which isolates the cable 25 from the hose 1. The baffle 12 can be an independent part or integrally formed with the first core body 6. As known from the foregoing, a limiting piece 32 is also arranged, so that the threading through hole 11 also passes through the limiting piece 32, and the cable 25 enters the inside of the axial extension 9 through the threading through hole 11, and then is routed along the axial extension 9 to the first core body 6 and enters the first core body 6.

[0064] Due to the above design, the connecting pipe of the application can be conveniently installed during installation. Specifically, first, one end of the cable 25 is connected to the first core body 6, and the other end is a free end. Then, the first core body 6, the operating part, the lock tongue 2, the baffle 12, the hose 1, and the second core body 8 are connected to form a first assembly. Referring to Figure 9 However, it should be noted that at this time, the free end and the terminal 34 have not been connected and are still free ends. Then, the first assembly is respectively sleeved with the first sleeve 5 and the second sleeve 7. When sleeving the first sleeve 5, the free end needs to be first threaded from the axial extension 9, and after threading, the first sleeve 5 is axially completely sleeved with the first core body 6. By virtue of the axial complete sleeving, the baffle 12 is axially inserted and matched with the opening groove described below. In this way, the cable 25 is better protected between the baffle 12 and the axial extension 9, and at the same time, the cable 25 passes through the axial extension 9, and the baffle 12 does not need to be holed to avoid the cable 25 for the axial insertion and matching. Then, when connecting the first sleeve 5 and the second sleeve 7, the free end needs to be further threaded from the matching shaft hole 30 and the limiting piece 32. Since the limiting piece 32 and the matching shaft hole 30 are sleeved and matched, the free end is threaded from the limiting piece 32, and at the same time, it is threaded from the matching shaft hole 30. Then, the free end is introduced into the second sleeve 7 by using the wire routing hole arranged on the second matching part. Then, the free end is connected with the terminal 34 and assembled into the second core body 8. Then, the hose 1 is loosened, so that the second core body 8 can be sleeved into the second sleeve 7. Then, the second core body 8 is relatively fixed with the second sleeve 7 by limiting and fixing with the gland 33. In this way, the connection of the first assembly, the first sleeve 5 and the second sleeve 7, the rotating connection between the first sleeve 5 and the second sleeve 7, the connection of the limiting piece 32, and the connection of the cable 25 are all successfully solved, and the installation is relatively convenient and efficient. Such design is relatively ingenious, which is conducive to compact structure and control of transverse width, but does not cause complex installation, has outstanding substantial features and significant technical effects.

[0065] After the above installation, the decorative cover 23 is connected to the second matching part, which protects the inside and makes it more beautiful.

[0066] In this example, the axial extension 9 is transversely overlapped with the second matching part, and the side of the axial extension 9 on the side of the hose 1 is provided with a matching groove 13. One end of the baffle 12 is fixedly connected to the first core 6, and the baffle 12 is connected to the matching groove 13. The baffle 12 serves as a cable 25 isolator and also as a reinforcing member for the axial extension 9. In this way, the structure is compact, and the problems of cable 25 protection and axial extension 9 reinforcement are solved. The control of the transverse width is extremely advantageous. In this example, the first core 6 is provided with a circumferential part 24, and the circumferential part 24 is provided with a matching opening 22. One end of the baffle 12 is fixedly connected to the matching opening 22, so that the structural strength is higher, and it is also convenient for installation.

[0067] As shown in Figure 10 , the matching groove 13 is provided as a generally trumpet-shaped open slot in the transverse view. When the first sleeve 5 is sleeved with the first core 6, the baffle 12 is inserted into the open slot of the axial extension 9 along the axial direction of the first sleeve 5 together with the first core 6. This design is more advantageous for easy axial installation.

[0068] In order to connect more firmly and reliably, and to avoid damage in future long-term use, as shown in Figure 10 , 13 , the matching groove 13 and the baffle 12 are further connected by a clamping part 28 and a bayonet 31. In this example, the connection design of the clamping part 28 and the bayonet 31 should also meet the design requirements of axial assembly, so as to facilitate installation.

[0069] The axial extension 9 is designed to be axially extended to the second sleeve 7 side with a reduced width. This is advantageous for a larger rotation angle and less rotation restriction.

[0070] The operation part can adopt the following structure, but is not limited to the following structure, and any applicable structure can be applied to the present application: the operation part adopts a first moving structure in which a first operation member moves transversely to drive the lock tongue 2 to move along the axial direction of the first segment, or the operation part adopts a second moving structure in which a second operation member moves axially to drive the lock tongue 2 to move along the axial direction of the first segment.

[0071] In this example, the first moving structure is mainly exemplified, as shown in Figure 8 , 13As shown, the first moving structure comprises a button 14 and a transverse linkage 15, the first sleeve 5 is provided with a first matching hole 16 which is movably matched with the button 14, the transverse linkage 15 is arranged across the circumference of the first core 6, the button 14 is transversely connected with the transverse linkage 15, the first guiding structure is arranged between the first sleeve 5 and the first core 6, the first guiding structure is guidingly matched with the transverse linkage 15, the transverse linkage 15 is provided with a first guiding slope 17, the lock tongue 2 is provided with a second guiding slope which is slidingly matched with the first guiding slope 17, the button 14 is used to drive the transverse movement of the transverse linkage 15, the transverse movement makes the first guiding slope 17 drive the axial movement of the second guiding slope, the axial movement can drive the lock tongue 2 to move along the axial direction of the first section. In this way, the structure is simple, compact, stable and reliable, and it is beneficial to better control the transverse width.

[0072] In this example, the first guiding structure adopts a first guiding groove 20, so the structure is simple and reliable.

[0073] As shown in Figure 5 , 6 , 7, the application further comprises a first reset elastic member 18, the first reset elastic member 18 is arranged along the axial direction of the first section and located in the circumference of the first core 6, one end of the first reset elastic member 18 is limited, the other end is connected with the lock tongue 2 and can move together with the lock tongue 2, the first reset elastic member 18 is used to drive the lock tongue 2 to reset to one side of the second sleeve 7. In this way, after the pressing force of the button 14 is removed, the lock tongue 2 can reset itself, and at the same time, the button 14 and the transverse linkage 15 will also reset.

[0074] In order to better reset and at the same time reduce the elastic force requirement of the first reset elastic member 18, the application further comprises a second reset elastic member 19, the second reset elastic member 19 is arranged between the button 14 and the first core 6, one end of the second reset elastic member 19 is limited, the other end is connected with the button 14 or the transverse linkage 15 or both the button 14 and the transverse linkage 15, the second reset elastic member 19 is used to drive the button 14 and the transverse linkage 15 to reset to the outside, in this example, the transverse linkage 15 is an inverted U-shaped member, the bottom of which is connected with the button 14, and the other end of the second reset elastic member 19 is connected with the bottom.

[0075] The second guiding structure is arranged between the first sleeve 5 and the first core 6, the second guiding structure is guidingly matched with the lock tongue 2, and the second guiding structure is used to guide the lock tongue 2 to move along the axial direction of the first section. Such design makes the movement of the lock tongue 2 more stable and accurate, which is beneficial to locking and unlocking. In this example, the second guiding structure adopts a first guiding surface 21, as shown in Figure 12 In this example, the first guiding surface 21 is composed of multiple surfaces on the axial movement path, thereby providing better guiding effect.

[0076] The operation part can also adopt a second moving structure, such as a second moving structure including an axial moving sleeve and a transverse piece transversely connected to the axial moving sleeve, the first sleeve 5 is sleeved with the axial moving sleeve, the first sleeve 5 is provided with a second matching hole matching the transverse piece, the second matching hole is arranged along the axial direction of the first sleeve 5, the transverse piece is movable in the second matching hole along the axial direction of the first sleeve 5, the transverse piece is connected with the lock tongue 2, and the axial moving sleeve drives the lock tongue 2 to move along the axial direction of the first section through the transverse piece. Such design is thicker in transverse direction, but does not need the convex button 14 design in circumferential direction, and is more regular in circumferential direction.

[0077] As shown in Figure 11 , the first matching part 4 is deep, the button 14 needs to be manually pressed to exit the lock tongue 2 to be able to rotate, and the application also has a temporary matching part 27, which is shallow and has guide parts on both sides, so that the first sleeve 5 and the second sleeve 7 can also rotate when they are relatively forced to rotate, that is, the lock tongue 2 is automatically exited. Therefore, the temporary matching part 27 becomes a gear structure, and in this example, each lock disc 3 is provided with three temporary matching parts 27, and the first matching part 4 and the three temporary matching parts 27 are sequentially arranged around the outer periphery of the lock disc 3, thereby providing a locking gear and three adjustment gears.

[0078] The connecting pipe of the application can be reversed, and the rotation angle is large.

[0079] The application also has an additional technical consideration, specifically, the connecting pipe of the application, when used by a user, there is a certain force between the lock tongue 2 and the first matching part 4, and the force is different for different users. Once the force is too large, it will cause the lock tongue 2 to be offset to the transverse side after cooperating with the first matching part 4. Therefore, the lock tongue 2 and the first matching part 4 of the application are provided with a transverse limiting structure, which is used to limit the offset of the lock tongue 2 to the transverse side after cooperating with the first matching part 4.

[0080] For this example, the transverse limiting structure is used to limit the offset of the lock tongue 2 to the inner side of the transverse direction after cooperating with the first matching part 4. In this way, different users can effectively ensure the reliability of the lock tongue 2, thereby avoiding misalignment failure.

[0081] As shown in Figure 11 , 14 , 15, 16, 17, the lock tongue 2 is provided with a lock head 36, the first matching part 4 located on one side of the hose is provided with a blocking part 37, and the inner side surface 38 of the lock head 36 is blocked by the blocking part 37 after the lock tongue 2 cooperates with the first matching part 4. Such structure is simple, and is also beneficial to the axial movement of the lock tongue 2. In addition, it is convenient to assemble.

[0082] From the above, the outer periphery of the lock disc 3 is further provided with a temporary matching part 27 which can be locked / unlocked with the lock tongue 2. In order to avoid dislocation failure at the temporary matching part 27, the temporary matching part 27 is also provided with the blocking part 37.

[0083] Although there are other lateral limiting structures, which are not listed here, the above-mentioned lateral limiting structure has the advantages of simple structure, small size and stable reliability.

[0084] The connecting pipe described in the present application can be used in the existing dust collector, which can be a handheld, horizontal and other types of dust collector. The connecting pipe can be used one or multiple, which can be configured according to the specific use design requirements.

[0085] In understanding the present application, the above structure can refer to other embodiments / attachments Figure 1 It is understood that the above is not elaborated here.

[0086] The above is only an embodiment of the present application for illustration, so any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present patent protection are included in the scope of the present patent protection.

Claims

1. A connecting tube comprising coaxial first and second segments, a hose, one end of which is in communication with the first segment and the other end of which is in communication with the second segment, wherein the first and second segments are pivotally connected, characterised in that, The first section is provided with an operating part and a locking tongue arranged circumferentially along the first section. The operating part is used to drive the locking tongue to move along the axial direction of the first section. The second section is provided with a locking disc located on the side of the hose. The axis of the locking disc intersects the coaxial cross with the aforementioned. The outer periphery of the locking disc is provided with a first mating part that can lock / unlock the locking tongue. The first mating part adopts a lock hole or lock groove. The first segment includes a first sleeve and a first core, with the first sleeve and the first core connected together. The second segment includes a second sleeve and a second core, with the second sleeve and the second core connected together. One end of the flexible tube is connected to the first core, and the other end of the flexible tube is connected to the second core. A locking disc is provided at one end of the second sleeve located on the same side as the first sleeve. The first sleeve has an axial extension at one end located on one side of the second sleeve. There are two axial extensions arranged laterally opposite each other. Correspondingly, the second sleeve has a second mating part that is rotatably connected to the axial extension at one end located on one side of the first sleeve. The rotation axis of the rotatable connection is the same as the axis of the locking disc. The rotating connection is provided with a through hole for the axial extension and the second mating part. A baffle is provided between the through hole and the hose, which isolates the cable from the hose. It is also equipped with a limiting component. The cable enters the inner side of the axial extension through the through hole, and then is routed along the axial extension to the first core. During installation, one end of the cable is first connected to the first core, while the other end remains free. Then, the first core, operating part, locking tongue, baffle, hose, and second core are connected to form the first assembly. Next, the first assembly is fitted onto the first sleeve and the second sleeve. When fitting the first sleeve, the free end must first pass through the axial extension part, and then the first sleeve is fully axially fitted onto the first core. The cable is protected between the baffle and the axial extension part. Then, the free end passes further through the mating shaft hole and the limiting part. The free end is then introduced into the second sleeve through the cable routing hole provided in the second mating part. The free end is then connected to the terminal and assembled into the second core, which is then fitted into the second sleeve.

2. The connecting pipe according to claim 1, characterized in that The locking tongue is located between the first sleeve and the first core.

3. The connecting pipe according to claim 1, wherein At least one second mating part serves as a locking disc.

4. The connecting pipe according to claim 1 or 3, characterized in that The second mating part is an integral part formed with the second sleeve, and the axial extension part is an integral part formed with the first sleeve.

5. The connecting pipe according to claim 1 or 3, characterized by The first sleeve, the first core, the second sleeve, and the second core are all integrally molded parts.

6. The connecting pipe according to claim 1 or 3, characterized by The axial extension and the second mating part are overlapped and mated laterally. The side of the axial extension located on the hose side is provided with a mating groove. One end of the baffle is fixedly connected to the first core. The baffle is mated and connected to the mating groove. The baffle serves as an isolation part for the cable and also as a reinforcement part for the axial extension.

7. The connecting pipe according to claim 6, characterized in that, The mating groove is configured as an opening groove that is roughly funnel-shaped from a lateral view. This opening groove is used so that when the first sleeve is sleeved with the first core, the baffle is inserted and mated in the opening groove of the axial extension along the axial direction of the first sleeve together with the first core.

8. The connecting pipe according to claim 6, characterized in that, The axial extension is designed with a reduced width towards the second sleeve side.

9. The connecting pipe according to claim 1, characterized in that, The operating unit adopts a first moving structure in which the locking tongue moves along the axial direction of the first segment by the lateral movement of the first operating member, or the operating unit adopts a second moving structure in which the locking tongue moves along the axial direction of the first segment by the axial movement of the second operating member.

10. The connecting pipe according to claim 9, characterized in that, The first moving structure includes a button and a lateral linkage. The first sleeve has a first mating hole that movably engages with the button. The lateral linkage spans the circumference of the first core. The button is laterally connected to the lateral linkage. A first guide structure is provided between the first sleeve and the first core. The first guide structure guides and engages with the lateral linkage. The lateral linkage has a first guide slope. The latch has a second guide slope that slides with the first guide slope. The button is used to drive the lateral linkage to move laterally. This lateral movement causes the first guide slope to drive the second guide slope to move axially. This axial movement can drive the latch to move along the axial direction of the first segment.

11. The connecting pipe according to claim 10, characterized in that, It also includes a first reset elastic element, which is located in the circumference of the first core and is arranged along the axial direction of the first segment. One end of the first reset elastic element is limited, and the other end is connected to the locking tongue and can move together with the locking tongue. The first reset elastic element is used to drive the locking tongue to reset to the second sleeve side.

12. The connecting pipe according to claim 10, characterized in that, It also includes a second reset elastic element, which is located between the button and the first core. One end of the second reset elastic element is limited, and the other end is connected to the button or the lateral linkage element, or both the button and the lateral linkage element. The second reset elastic element is used to drive the button and the lateral linkage element to reset outward.

13. The connecting pipe according to claim 10, characterized in that, A second guide structure is provided between the first sleeve and the first core. This second guide structure cooperates with the locking tongue guide and is used to guide the locking tongue to move along the axial direction of the first segment.

14. The connecting pipe according to claim 9, characterized in that, The second moving structure includes an axially moving sleeve and a transverse member connected to the axially moving sleeve. The first sleeve is sleeved with the axially moving sleeve. The first sleeve is provided with a second mating hole for the movable transverse member. The second mating hole extends along the axial direction of the first sleeve. The transverse member can move along the axial direction of the first sleeve in the second mating hole. The transverse member is connected to the locking tongue. The axially moving sleeve drives the locking tongue to move along the axial direction of the first segment via the transverse member.

15. The connecting pipe according to claim 1, characterized in that, A lateral limiting structure is provided between the latch and the first mating part. This lateral limiting structure is used to at least limit the latch from shifting laterally to one side after it engages with the first mating part.

16. The connecting pipe according to claim 15, characterized in that, The lateral limiting structure is used to limit the lateral inward displacement of the latch after it engages with the first mating part.

17. The connecting pipe according to claim 16, characterized in that, The locking tongue is equipped with a locking head, and the first mating part is located on one side of the hose and has a blocking part. After the locking tongue is engaged with the first mating part, the inner side of the locking head is blocked by the blocking part.

18. The connecting pipe according to claim 17, characterized in that, The outer periphery of the lock disc is also provided with a temporary mating part that can be locked / unlocked with the lock tongue, and the temporary mating part is provided with the aforementioned blocking part.

19. A vacuum cleaner employing the connecting tube according to any one of claims 1 to 18, characterized in that, The vacuum cleaner includes the connecting tube.

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