Dredging device

Abstract

The invention discloses a dredger, which comprises a long part, a hollow part and a connecting part, and is characterized in that the long part is used for dredging a pipeline; the first shell is used for winding the long part, the first shell is annular, and an opening groove is formed in the inner circumferential surface of the first shell; the second shell is arranged on the first shell in a sleeving manner and is configured to slide relative to the first shell; and the stop part is connected to the second shell, and the stop part is configured to prevent the long part from being separated from the interior of the first shell when the long part is folded. According to the dredging device, the long part can be effectively prevented from being dislocated from the first shell in the storage process, and the use convenience of the dredging device is improved.

Description

Technical Field

[0001] The invention relates to a pipeline cleaning tool, and more particularly to a pipeline dredging tool. Background Art

[0002] Sewer pipes are often clogged due to the accumulation and entanglement of debris such as hair and fibers, and therefore need to be cleaned with a pipe cleaner. A steel belt pipe cleaner is one of the pipe cleaners. However, when the steel belt is currently available on the market and is stored after being pulled out for use, the rolling handle rotates, driving the steel belt to rotate and be stored inside the shell. The rolling handle and the steel belt have an interactive force, which makes the steel belt not completely synchronized, or the steel belt is entangled or stuck by foreign objects, causing the steel belt loop to be eccentrically stressed. When the eccentricity reaches a certain degree, the steel belt will be dislocated, that is, the steel belt protrudes from the storage shell to the outside of the shell, causing inconvenience in use.

[0003] Therefore, technicians in this field are committed to developing a dredger that can effectively prevent the steel belt from being dislocated from the storage shell during the steel belt storage process. Summary of the invention

[0004] In the process of storing the existing steel belt dredger after the steel belt is pulled out for use, the steel belt may be dislocated. In order to overcome this defect, the present invention provides a dredger that can effectively prevent the steel belt from being dislocated from the shell. To achieve the above purpose, the present invention provides a dredger, comprising:

[0005] Long parts used for unclogging pipes;

[0006] A first shell, used for rolling up the elongated member, the first shell is annular, and an inner circumference thereof is provided with an open groove;

[0007] A second housing is sleeved on the first housing and is configured to slide relative to the first housing;

[0008] A stopper is connected to the second housing and is configured to prevent the elongated member from being separated from the first housing when the elongated member is folded.

[0009] Preferably, the stop member comprises an extension portion extending from a main body of the second shell along a circumferential direction of the first shell, and the extension portion covers a portion of the first shell, so that another portion of the first shell forms a rotating portion.

[0010] Furthermore, an angle between a line connecting an end of the main body of the second shell and the center of the first shell and a line connecting an end of the extension portion and the center of the first shell is 90 degrees.

[0011] Preferably, the stop component includes a stop ring extending from the second shell along the inner circumferential surface of the first shell, one end of the stop ring is connected to one end of the second shell, and the other end of the stop ring is connected to the other end of the second shell, so that the stop ring and the inner circumferential surface of the second shell form a circle.

[0012] Furthermore, at least a portion of the stop ring extends into the first shell.

[0013] Furthermore, the stop component further includes a rolling component, and the rolling component is rotatably connected to the stop ring.

[0014] Preferably, the stop component includes a bracket arranged in a circumferential area of ​​the first shell, the bracket includes at least one bracket arm, one end of the bracket arm is connected to the second shell, and the other end forms a stop portion, and the stop portion extends into the first shell.

[0015] Further, the bracket includes a first bracket arm and a second bracket arm, one end of the first bracket arm is connected to one end of the second shell, one end of the second bracket arm is connected to the other end of the second shell, the other end of the first bracket arm intersects with the other end of the second bracket arm to form the stop portion, and the stop portion extends into the first shell.

[0016] Furthermore, the stopper is arc-shaped.

[0017] Furthermore, the stop component further includes a rolling component, and the rolling component is rotatably connected to the stop portion.

[0018] Preferably, the second shell is composed of a first part and a second part which are arranged opposite to each other, and the first part and the second part are respectively located on two sides of the axial direction of the first shell.

[0019] Further, the stop component includes a stop portion extending from the first portion along the inner circumferential surface of the first shell, and the cross-section of the stop portion and the first portion is L-shaped or U-shaped.

[0020] Preferably, the stop component comprises a stop rod provided at at least one end of the first portion, and a free end of the stop rod extends into the first shell.

[0021] Furthermore, the stopping component further includes a rolling component, and the rolling component is rotatably connected to the free end of the stopping rod.

[0022] Furthermore, the stop rod is integrally formed with the second shell.

[0023] Preferably, the free end of the stop rod forms a pressing block, and a contact surface of the pressing block that contacts the elongated component is arc-shaped.

[0024] Furthermore, a metal gasket in contact with the elongated component is provided on the pressing block.

[0025] Preferably, the stop rod is rotatably connected to the second housing, and an elastic member is connected to the stop rod and the second housing and applies a pre-tightening force on the stop rod toward the elongated member.

[0026] Furthermore, the elastic member is a torsion spring arranged at the rotation axis of the stop rod and the second shell.

[0027] Preferably, the second portion is provided with a lead-out groove, and the lead-out groove forms a channel for leading out the elongated component.

[0028] Furthermore, the lead-out groove is tangent to the circumference of the first shell.

[0029] The present invention has the following technical effects: the present invention can effectively prevent the long component from being dislocated from the first shell during the storage process by using the stop component, thereby improving the convenience of using the plumbing cleaner.

[0030] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the structure of the dredge of the present invention (the stopper component is not shown);

[0032] Figure 2 is a schematic structural diagram of the second shell;

[0033] Figure 3 It is a schematic diagram of the structure of a long component;

[0034] Figure 4 is a schematic diagram of the position of the outlet channel on the second shell;

[0035] Figure 5 is a schematic structural diagram of Example 1;

[0036] Figure 6 is a schematic structural diagram of Example 2;

[0037] Figure 7 yes Figure 6 Schematic cross-sectional view of ;

[0038] Figure 8 is a schematic diagram of the structure in which a rolling component is added to Embodiment 2;

[0039] Fig. 9 is a schematic structural diagram of Example 3;

[0040] Fig.10 is a schematic diagram of the structure in which a rolling component is added to Embodiment 3;

[0041] Fig.11 is a schematic structural diagram of Example 4;

[0042] Fig.12 is a schematic structural diagram of Example 5;

[0043] Fig.13 is an exploded schematic diagram of Example 5;

[0044] Fig.14 It is a left side view of Example 5;

[0045] Fig.15 yes Fig.14 AA cross-section diagram of ;

[0046] Fig.16 is a schematic structural diagram of the first part of the first shell in Example 5;

[0047] Fig.17 is a schematic diagram of the angle between the two rolling components and the line connecting the center of the circle in Example 5;

[0048] Fig.18 is a schematic diagram of the structure in Example 6, showing a compact;

[0049] Fig.19 is a schematic diagram of adding a metal gasket to the pressing block in Example 6;

[0050] Fig. 20 is an enlarged schematic diagram of Example 7;

[0051] Among them, 1-dredge, 2-elongated component, 3-first shell, 4-cavity, 5-opening groove, 6-dredge head, 7-second shell, 8-lead groove;

[0052] 11-main body, 12-extension part, 13-rotation part;

[0053] 21-stop ring, 22-rolling component;

[0054] 30- bracket, 31- first bracket arm, 32- second bracket arm, 33- stopper, 34- cross arm, 35- rolling component;

[0055] 41-first part, 42-second part, 43-stop part;

[0056] 51-first part, 52-second part, 53-fastener, 54-stop component, 55-stop rod, 56-rolling component, 57-pin shaft, 58-groove;

[0057] 61-pressing block, 62-metal gasket;

[0058] 71 - stop rod, 72 - elastic member, 73 - rolling member. DETAILED DESCRIPTION

[0059] The following describes several preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0060] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0061] Figure 1 A dredging tool 1 is shown, comprising an elongated component 2 for dredging a pipe, a first housing 3 for accommodating the elongated component 2, and a second housing 7 for holding. The elongated component 2 can be inserted into the pipe to be dredged for dredging. Figure 2 The first shell 3 is annular in shape, and a cavity 4 for accommodating the elongated component 2 is formed inside. The elongated component 2 is rolled up in the cavity 4; the inner circumferential surface of the first shell 3 has an open groove 5 arranged along the circumferential direction. Preferably, the cross-section of the first shell 3 (the cross-section along the radial direction) is U-shaped. The second shell 7 is sleeved on the first shell 3 and covers part of the first shell 3 and part of the open groove 5. The second shell 7 can slide along the first shell 3. When in use, the user holds the second shell 7 with his hand and rotates the first shell 3 along the circumferential direction of the first shell 3 to retract the elongated component 2 into the first shell 3 or push the elongated component 2 out of the first shell 3. A dredging head 6 can be provided on the end of the elongated component 2 exposed outside the first shell 3. On the one hand, it can increase the dredging ability of the elongated component 2. On the other hand, when the elongated component 2 is retracted, the dredging head 6 can form a barrier to prevent the elongated component 2 from being completely rolled into the first shell 3. As Figure 3 As shown, the elongated member 2 has a certain elasticity, can extend in the pipe and bend along with the shape of the pipe, and can be rolled up, and can be made of a steel belt, a fishing line belt or other elastic elongated members.

[0062] like Figure 4As shown, a lead-out groove 8 is provided on the second shell 7, and the lead-out groove 8 is located on the side of the first shell 3. The lead-out groove 8 forms a lead-out channel of the elongated component 2 on the second shell 7, and the end of the elongated component 2 extends out of the first shell 3 through the lead-out groove 8. The dredging head 6 on the elongated component 2 can be a spear-shaped component, and the radial dimension of the dredging head 6 is larger than the opening dimension of the lead-out groove 8, so that the dredging head 6 is always exposed outside the second shell 7. Preferably, the lead-out groove 8 is tangent to the circumference of the first shell 3, that is, the angle γ between the lead-out groove 8 and the radius of the first shell 3 is 90 degrees.

[0063] Figure 1 When the plumbing cleaner 1 is in use, under normal conditions, most of the elongated member 2 is wound into a circle and is located in the cavity 4. After the elongated member 2 forms a circle, it will not protrude from the opening slot 5 to the outside of the first shell 3 due to its elastic expansion. However, if the elongated member 2 is subjected to other external forces (for example, the steel belt is stuck by foreign objects or by the plumbing cleaner 1 itself), the first shell 3 continues to rotate to retract the elongated member 2. The circle formed by the elongated member 2 wound in the first shell 3 may have a smaller diameter due to its own stress, so that part of the elongated member 2 in the wound state protrudes from the opening slot 5 of the first shell 3 to the outside of the first shell 3 and detaches from the first shell 3 (i.e., the elongated member 2 is dislocated), which may cause inconvenience to the user.

[0064] In order to solve the problem of dislocation of the elongated member 2, the present invention provides a stopper at the opening slot 5 of the first housing 3, and the stopper can prevent (block or hinder) the elongated member 2 from being disengaged from the first housing 3. The stopper can form an obstruction or blockage to the elongated member 2 when the elongated member 2 is about to be disengaged from the first housing 3, and can also contact the elongated member 2, thereby exerting a force on the elongated member 2 to prevent the elongated member 2 from being disengaged.

[0065] The technical solution of the present invention is described in detail below through a plurality of embodiments. It should be noted that the structure of the dredger 1 described above is applicable to each embodiment of the present application.

[0066] Example 1

[0067] like Figure 5 As shown, the dredging device provided in this embodiment is Figure 1The improvement is made on the basis of the shown dredge. Specifically, one end of the second shell 7 is extended along the circumferential direction of the first shell 3 to form an extension portion 12 wrapped outside the first shell 3, that is, the second shell 7 includes a second shell body 11 (grip portion) and an extension portion 12. The second shell 7 is sleeved on the first shell 3, so that part of the first shell 3 is exposed outside and is not covered by the second shell body 11 and its extension portion 12. The extension portion 12 constitutes a stopper component to prevent the long component 2 from being dislocated. The part of the first shell 3 exposed outside serves as a rotating portion 13. The user holds the rotating portion 13 to rotate the first shell 3, so that it is convenient for the user to operate to rotate the first shell 3. Except for the rotating portion 13, the other parts of the first shell 3 (including the opening groove 5 of this part) are covered by the second shell body 11 and its extension portion 12. When in use, the user holds the second shell body 11 and operates the rotating portion 13 to realize the rotation of the first shell 3, thereby rolling up the long component 2 or pushing out the long component 2. When the elongated component 2 is stuck, the first shell 3 continues to rotate, and the elongated component 2 located inside the first shell 3 may detach from the first shell 3 from the opening groove 5 due to its own stress. However, when the elongated component 2 reaches the opening groove 5, it cannot detach from the first shell 3 due to the obstruction of the extension part 12, thereby effectively preventing the elongated component 2 from being dislocated from the first shell 3, thereby improving the convenience of use of the clearing tool 1.

[0068] The two ends of the second shell 7 and the line connecting the center of the first shell 3 form an angle α. By reasonably setting the angle value of the angle α, the arc length of the rotating part 13 and the length of the covered part of the first shell 3 can be effectively determined, so that it is convenient for the user to operate the rotating part 13 and can effectively prevent the long component 2 from detaching. Preferably, the angle α is set to 90 degrees.

[0069] The extension portion 12 may be integrally formed with the second shell 7 , or may be manufactured and formed separately and then fixedly connected to the second shell 7 .

[0070] Example 2

[0071] like Figure 6 and Figure 7 As shown, the dredging device provided in this embodiment is Figure 1The improvement is made on the basis of the clearing device shown in the figure, and the difference from Example 1 is that the stop component adopted in this embodiment has a different structure from the extension part in Example 1. Specifically, the stop component includes a stop ring 21 arranged at the opening groove 5 of the first shell 3, and the stop ring 21 is arranged along the inner circumferential direction of the first shell 3 to block the opening groove 5. One end of the stop ring 21 is connected to one end of the second shell 7, and the other end of the stop ring 21 is connected to the other end of the second shell 7, so that the stop ring 21 and the inner side surface of the second shell 7 form a circle, covering the opening groove 5 of the first shell 3. The stop ring 21 slides relative to the first shell 3. When in use, the first shell 3 is rotated, and the second shell 7 and the stop ring 21 remain relatively stationary, thereby rolling up the elongated component 2 or pushing out the elongated component 2. At least a portion of the stop ring 21 extends into the first shell 3 (see Figure 7 ) or only covers the opening groove 5. In the process of folding the elongated member 2, when the elongated member 2 is stuck by external force, the diameter of the circle formed by the elongated member 2 becomes smaller, and when it is about to detach from the first housing 3, it will be blocked by the stop ring 21, thereby preventing the elongated member 2 from being dislocated.

[0072] In some embodiments, Figure 8 As shown, at least one rolling component 22 can be provided on the stop ring 21, and the rolling component 22 is rotatably connected to the stop ring 21. When the elongated component 2 is in a natural state, the rolling component 22 can directly contact the elongated component 2 to form a contact point to prevent the elongated component 2 from being dislocated. It should be understood that when the elongated component 2 is in a natural state, there is a gap between the rolling component 22 and the elongated component 2, that is, the two will not contact each other, but when the elongated component 2 is subjected to external force (the elongated component 2 is stuck or entangled by foreign objects, etc.), the diameter of the circle formed by the elongated component 2 stored in the first shell 3 may be reduced, and the elongated component 2 has a tendency to be separated from the first shell 3. At this time, the gap between the rolling component 22 and the elongated component 2 disappears, and the two contact to form a contact point (external support top pressure point). Through the rolling component 22, on the one hand, force can be continuously applied to the elongated component 2 to further prevent the elongated component 2 from being dislocated; on the other hand, the friction between the elongated component 2 and the stop component can be reduced, reducing the wear on the elongated component 2. The rolling component 22 can be a roller. Preferably, two rolling components 22 are arranged on the stop ring 21 , and the two rolling components 22 are respectively located on both sides of the second housing 7 along the circumferential direction. Preferably, the two rolling components 22 are close to the second housing 7 .

[0073] Example 3

[0074] like Fig. 9As shown, the difference between the dredge 1 provided in this embodiment and the embodiments 1-2 is that the structure of the stopper component used in this embodiment is different. The stopper component includes a bracket 30 arranged in the inner circumference area of ​​the first shell 3, and the bracket 30 includes at least one bracket arm, one end of the bracket arm is connected to the second shell 7, and the other end forms a stopper, which extends into the first shell 3 to block or hinder the elongated component 2 from detaching from the first shell 3.

[0075] In some preferred embodiments, the bracket 30 may include two bracket arms. Specifically, the bracket 30 includes two bracket arms, namely a first bracket arm 31 and a second bracket arm 32. One end of the first bracket arm 31 and one end of the second bracket arm 32 are respectively connected to the two end portions of the second shell 7 along the circumferential direction, and the other end of the first bracket arm 31 intersects with the other end of the second bracket arm 32 to form a stopper 33, so that the bracket 30 and the second shell 7 roughly form a triangular structure with good stability. The stopper 33 passes through the opening slot 5 of the first shell 3 and enters the inner elongated shape of the first shell 3. When the elongated component 2 is in a natural state, the stopper 33 can directly contact the elongated component 2 to form a contact point. It should be understood that when the elongated member 2 is in a natural state, there is a gap between the stop portion 33 and the elongated member 2, that is, the two will not contact each other. However, when the elongated member 2 is subjected to external force (the elongated member 2 is stuck or entangled by foreign objects, etc.), the diameter of the circle formed by the elongated member 2 housed in the first shell 3 may be reduced, and the elongated member 2 tends to be separated from the first shell 3. At this time, the gap between the stop portion 33 and the elongated member 2 disappears, and the two contact to form a contact point, thereby forming an external support pressure point, so that force can be applied to the elongated member 2 to prevent the elongated member 2 from being dislocated. Preferably, the stop portion 33 can be configured to be arc-shaped to reduce wear on the elongated member 2. Further, as Fig.10 As shown, a rotatable rolling component 35 can be provided on the stopper 33, and the rolling component 35 can directly contact the elongated component 2 in a natural state to form a contact point (external support pressure point), or when the diameter of the circle formed by the elongated component 2 is reduced, the rolling component 35 can contact the elongated component 2. The rolling component 35 can reduce the wear on the elongated component 2.

[0076] The elongated member 2 forms a circle in the first shell 3. If the elongated member 2 is separated from the first shell 3, it will not be separated at a certain point, but a section of the arc-shaped part of the circle formed by the elongated member 2 will be separated from the first shell 3 as a whole. Since the second shell 7 has formed a block for the elongated member 2, the part of the elongated member 2 opposite to the second shell 7 is the easiest to be separated. Through the bracket 30 of this embodiment, the stopper 33 is located opposite to the second shell 7, and the stopper 33 or the rolling member 35 contacts the elongated member 2, forming an external support top pressure point on the inner side of the elongated member 2, forming a radial limit of the elongated member 2 circle. Since the elongated member 2 has a certain rigidity, under the action of the contact point, the elongated members 2 on both sides of the contact point will be blocked by the stopper 33, so that the elongated member 2 remains in an open state and is better close to the first shell 3, and it is not easy to cause the elongated member 2 circle to collapse, thereby avoiding the elongated member 2 from being unable to form a circle and being separated from the first shell 3.

[0077] In some embodiments, a cross arm 34 may be provided on the bracket 30, and both ends of the cross arm 34 are respectively connected to the first bracket arm 31 and the second bracket arm 32 to enhance the stability of the bracket 30. Preferably, the bracket 30 may be manufactured in an integrally formed manner.

[0078] Example 4

[0079] like Fig.11 As shown, the difference between the dredge provided in this embodiment and the embodiments 1-3 is that the structures of the second shell 7 and the stopper component used in this embodiment are different. Specifically, the second shell 7 is composed of two parts, namely the first part 41 of the second shell and the second part 42 of the second shell, which are arranged opposite to each other and are respectively located on both sides of the axial direction of the first shell 3; after the first part 41 and the second part 42 are combined together, they can be covered on the first shell 3. Among them, a stopper 43 is provided on the first part 41, and the stopper 43 extends from the first part 41, and the cross section of the stopper 43 and the first part 41 is L-shaped or U-shaped; the second part 42 is provided with a lead-out groove 8 to form a lead-out channel for the elongated component 2. In some embodiments, the stopper 43 is bent into multiple sections, covering the opening groove 5 of the first shell 3, or part of the stopper 43 extends from the opening groove 5 into the first shell 3, so as to prevent the elongated component 2 from detaching from the first shell 3. In some embodiments, the stopper 43 may be formed into an arc shape that substantially matches the inner circumferential surface of the first shell 3 , covering the outside of the opening groove 5 of the first shell 3 to prevent the elongated component 2 from detaching from the first shell 3 .

[0080] Example 5

[0081] Figure 12-Figure 17 Embodiment 5 is shown. The difference between the dredge provided in this embodiment and embodiments 1-4 is that the structures of the second housing 7 and the stopper 54 used in this embodiment are different.

[0082] like Fig.12 and Fig.13 As shown, the second housing 7 includes a first part 51 and a second part 52 which are arranged opposite to each other. The first part 51 and the second part 52 are respectively located on both sides of the axial direction of the first housing 3. After the two parts are assembled together, they are covered outside the first housing 3. The first part 51 and the second part 52 can be fixed by a fastener 53, for example, a screw or a buckle. The second part 52 is provided with a lead-out groove 8, and the first part 51 is provided with a stopper component 54. Specifically, the stopper component 54 includes a stopper rod 55 which is provided at at least one end of the first part 51 in the circumferential direction. The stopper rod 55 is formed by extending from the end of the first part 51 in the circumferential direction. The free end of the stopper rod 55 is provided with a rolling component 56, and the rolling component 56 is rotatably connected to the stopper rod 55. The rolling component 56 enters the first housing 3 from the opening groove 5 of the first housing 3. When the elongated component 2 is in a natural state, the rolling component 56 can contact with the elongated component 2 to form a contact point to prevent the elongated component 2 from being dislocated. It should be understood that when the elongated member 2 is in a natural state, there is a gap between the rolling member 56 and the elongated member 2, that is, the two will not contact each other. However, when the elongated member 2 is subjected to an external force (e.g., the elongated member 2 is stuck or entangled by foreign objects), the diameter of the circle formed by the elongated member 2 stored in the first shell 3 may be reduced, and the elongated member 2 has a tendency to detach from the first shell 3. At this time, the gap between the rolling member 56 and the elongated member 2 disappears, and the two contact to form a contact point. Preferably, the rolling member 56 is a roller connected to the stop rod 55 via a pin 57. In some embodiments, Fig.16 As shown, a groove 58 for accommodating the rolling member 56 is provided at the free end of the stop rod 55 , the opening of the groove 58 faces the elongated member 2 , and the rolling member 56 is installed in the groove 58 via a pin 57 .

[0083] Preferably, stop rods 55 are provided at both ends of the second part 52 in the circumferential direction. The two stop rods 55 extend outward from the second part 52 in the circumferential direction and enter the first shell 3 from the opening groove 5 of the first shell 3. The free ends of the two stop rods 55 are provided with rotatable rolling parts 56, so that contact points with the elongated part 2 are formed at both ends of the second part 52. When the elongated part 2 is rolled up, the two rolling parts 56 press against the inner side of the elongated part 2, forming two external support pressing points (contact points) on the inner side of the elongated part 2, forming a radial limit of the elongated part 2, so that the elongated part 2 can be kept in an open state and better close to the first shell 3 (see Fig.15 The region C) is not easy to cause the elongated member 2 to collapse, thereby preventing the elongated member 2 from being unable to form a circle and detaching from the first housing 3. Fig.17As shown, the two rolling components 56 respectively form an angle β with the line connecting the center of the first shell 3, and the range of the angle β can be set according to the size of the second shell 7, the size of the first shell 3, etc. In some embodiments, the angle range is preferably greater than 90 degrees and less than 180 degrees. Preferably, the angle range is 110-150 degrees, and more preferably, the angle is set to 132 degrees.

[0084] The stopping rod 55 may be integrally formed with the first portion 51 , or may be separately formed and then connected to the first portion 51 .

[0085] Example 6

[0086] The difference between this embodiment and the fifth embodiment is that the rolling component in the fifth embodiment is replaced by a pressing block 61. The rest of the structure is the same as that of the fifth embodiment, and the same parts will not be described here. Fig.18 As shown, the free end of the stop rod 55 forms a pressing block 61, which extends from the opening slot 5 of the first shell 3 into the first shell 3 and contacts the elongated component 2 to form an external support top pressure point. The contact pressure surface of the pressing block 61 and the elongated component 2 is arc-shaped. There is sliding friction between the pressing block 61 and the elongated component 2. Preferably, the pressing block 61 is made of plastic. Fig.19 As shown, a metal gasket 62 can be provided on the side of the pressing block 61 facing the elongated member 2. In this case, the metal gasket 62 is in direct contact with the elongated member 2, which can increase the wear resistance of the pressing block 61. The pressing block can be integrally formed with the first part 51, or can be separately formed and then connected to the first part 51. The pressing block 61 can be in direct contact with the elongated member 2 in a natural state, or can be in contact with the pressing block 61 when the diameter of the circle formed by the elongated member 2 is reduced.

[0087] The number of the pressing blocks 61 is the same as that of the stopper rod in the embodiment 5, and can be set to one or two. Taking two pressing blocks 61 as an example, the two pressing blocks 61 are respectively located at the two ends of the first part of the second shell 7 along the circumferential direction, and can press against the inner side of the elongated component 2, forming two external support pressing points on the inner side of the elongated component 2, forming a radial limit of the elongated component 2 circle, so that the elongated component 2 can maintain the open state and better lean against the first shell 3, and it is not easy to cause the elongated component 2 circle to collapse, thereby preventing the elongated component 2 from being unable to form a circle and detaching from the first shell 3.

[0088] Example 7

[0089] The difference between this embodiment and the fifth embodiment is that the connection method between the stop rod 71 and the second housing 7 is different. Fig. 20As shown, one end of the stop rod 71 is rotatably connected to the second housing 7, and the other end extends from the opening slot 5 of the first housing 3 into the first housing 3 to contact the elongated component 2 to form a contact point. It should be noted here that the other end of the stop rod 71 can be set as a rolling component 73 (that is, the same as in Example 5), and the pressing block structure of Example 6 can also be adopted, that is, the pressing block of Example 6 is used as the stop rod 71.

[0090] An elastic member 72 is provided at the connection between the stop rod 71 and the second housing 7, and the elastic member 72 exerts elastic force on the stop rod 71 to provide a pre-tightening force for the stop rod 71 to approach the elongated component 2. Preferably, the elastic member 72 is a torsion spring, and is provided at the rotating shaft connecting the stop rod 71 and the second housing 7.

[0091] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A dredging device, characterized in that: include: Long parts used for unclogging pipes; A first shell, used for rolling up the elongated member, the first shell is annular, and an inner circumference thereof is provided with an open groove; A second housing is sleeved on the first housing and is configured to slide relative to the first housing; A stopper is connected to the second housing and is configured to prevent the elongated member from being separated from the first housing when the elongated member is folded.

2. The dredger according to claim 1, characterized in that: The stopper component includes an extension portion extending from a main body of the second shell along a circumferential direction of the first shell, and the extension portion covers a portion of the first shell, so that another portion of the first shell forms a rotating portion.

3. The dredging device according to claim 2, characterized in that: An angle between a line connecting an end of the main body of the second shell and the center of the first shell and a line connecting an end of the extension portion and the center of the first shell is 90 degrees.

4. The dredger according to claim 1, characterized in that: The stop component includes a stop ring extending from the second shell along the inner circumferential surface of the first shell, one end of the stop ring is connected to one end of the second shell, and the other end of the stop ring is connected to the other end of the second shell, so that the stop ring and the inner circumferential surface of the second shell form a circle.

5. The dredging device according to claim 4, characterized in that: At least a portion of the stop ring extends into the first shell.

6. The dredger according to claim 5, characterized in that: The stop member further includes a rolling member rotatably connected to the stop ring.

7. The dredger according to claim 1, characterized in that: The stop component includes a bracket arranged in the circumferential area of ​​the first shell, the bracket includes at least one bracket arm, one end of the bracket arm is connected to the second shell, and the other end forms a stop portion, and the stop portion extends into the first shell.

8. The dredger according to claim 7, characterized in that: The bracket includes a first bracket arm and a second bracket arm, one end of the first bracket arm is connected to one end of the second shell, one end of the second bracket arm is connected to the other end of the second shell, and the other end of the first bracket arm intersects with the other end of the second bracket arm to form the stopper.

9. The dredger according to claim 7 or 8, characterized in that: The stopper member further includes a rolling member rotatably connected to the stopper portion.

10. The dredger according to claim 1, characterized in that: The second shell is composed of a first part and a second part which are arranged opposite to each other. The first part and the second part are respectively located on two sides of the axial direction of the first shell.

11. The dredger according to claim 10, characterized in that: The stop member includes a stop portion extending from the first portion along the inner circumferential surface of the first shell, and the stop portion and the first portion have an L-shaped or U-shaped cross section.

12. The dredger according to claim 10, characterized in that: The stop component includes a stop rod disposed at at least one end of the first portion, and a free end of the stop rod extends into the first shell.

13. The dredger according to claim 12, characterized in that: The stop member further includes a rolling member rotatably connected to the free end of the stop rod.

14. The dredger according to claim 12, characterized in that: The stop rod is integrally formed with the second shell.

15. The dredger according to claim 12, characterized in that: The free end of the stop rod forms a pressing block, and a contact pressing surface of the pressing block that contacts the elongated component is arc-shaped.

16. The dredger according to claim 15, characterized in that: The pressing block is provided with a metal gasket in contact with the elongated component.

17. The dredger according to claim 12, characterized in that: The stop rod is rotatably connected to the second housing, and an elastic member is connected to the stop rod and the second housing and applies a preload force on the stop rod toward the elongated member.

18. The dredger according to claim 15, characterized in that: The elastic member is a torsion spring arranged at the rotating shaft of the stop rod and the second shell.

19. The dredger according to claim 10, characterized in that: The second portion is provided with a lead-out groove, which forms a passage for leading out the long member.

20. The dredge according to claim 19, characterized in that: The lead-out groove is tangent to the circumference of the first shell.

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