Dredging device

Abstract

The utility model provides a dredger, a dredger body comprises an upper cover part, a lower cover part and a spiral bourdon tube, the top of the upper cover part is provided with an accommodating groove body, a crank assembly can be accommodated in the accommodating groove body, one end of the crank assembly is rotatably connected with one end of the accommodating groove body through a bolt, and the bottom of the rotating end of the accommodating groove body is provided with an elastic piece. The rotating end of the crank assembly is provided with a first edge and a second edge, when the crank assembly is in the containing state and the stretching state, the first edge and the second edge abut against the elastic piece respectively, the crank assembly downwards presses the elastic piece to enable the elastic piece to deform, and the crank assembly is oppositely clamped and relatively fixed through the elastic force of the elastic piece and the pressure of the plug pin. According to the utility model, the crank assembly and the dredger body can be kept in a stable posture when the crank assembly is in the accommodating state and the stretching state.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning equipment, in particular to a dredge. Background Art

[0002] The spiral pipe dredge is a pipe cleaning tool that can use a spiral spring tube to penetrate deep or hard-to-reach pipe blockages, allowing the spiral spring tube to rotate, thereby breaking or displacing the blockage and achieving the pipe blockage cleaning function.

[0003] Under the existing technology, the crank assembly of a conventional drain cleaner adopts a fixed structure or a foldable structure. If a fixed structure is adopted, the entire drain cleaner occupies a large volume, which is inconvenient to store and carry. If a foldable structure is adopted, the crank assembly of the existing drain cleaner cannot be firmly connected to the drain cleaner body when it is in the stretched state. When the user drives the crank assembly to rotate, the crank assembly is prone to shaking or even out of the stretched state, affecting work efficiency and work safety. At the same time, the crank assembly is also unable to be firmly connected to the drain cleaner body when it is in the retracted state. When the drain cleaner shakes, the crank assembly is prone to automatically out of the stretched state. Utility Model Content

[0004] The utility model aims to provide a pipe cleaner to solve the technical problem in the prior art that conventional foldable pipe cleaners cannot maintain a stable connection between the crank assembly and the pipe cleaner body in the extended state and the retracted state.

[0005] In order to solve the above problems, the technical solution of the utility model is: a dredging device, comprising:

[0006] The plumber body includes an upper cover, a lower cover, and a coil spring tube. The upper cover is rotatably connected to the lower cover. An axially penetrating receiving groove is provided on the top of the upper cover. The coil spring tube is transmission-connected to the upper cover and can extend out of the bottom opening of the lower cover and rotate through the rotation of the upper cover.

[0007] A crank assembly, the crank assembly can be accommodated in the accommodating tank body, and the rotating end of the crank assembly is rotatably connected to the rotating end of the accommodating tank body via a latch; a vertically penetrating notch is provided at the bottom of the rotating end of the accommodating tank body, an elastic member is provided in the notch, and one end of the elastic member is fixedly connected to a side edge of the notch;

[0008] The rotating end of the crank assembly is provided with a first edge and a second edge at opposite edges, the first edge and the second edge being transitioned by an arc structure, the distance from the rotation center of the crank assembly to the first edge and the second edge being set as a first distance, and the distance from the rotation center of the crank assembly to the top surface of the elastic member being set as a second distance, and the first distance being limited to be greater than the second distance;

[0009] The crank assembly is configured such that, when the crank assembly is in a retracted state, the first edge abuts against the elastic member, and the crank assembly presses down on the elastic member to cause it to deform, and the crank assembly is clamped toward each other by the elastic force of the elastic member and the pressure of the latch and is relatively fixed; when the crank assembly is in an extended state, the second edge abuts against the elastic member, and the crank assembly presses down on the elastic member to cause it to deform, and the crank assembly is clamped toward each other by the elastic force of the elastic member and the pressure of the latch and is relatively fixed.

[0010] Preferably, the rotating end of the crank assembly is further provided with a third edge, the third edge being provided between the first edge and the second edge, and transitioning to the first edge and the second edge respectively via an arc structure, and the distance from the rotation center of the crank assembly to the third edge is set to be a first distance;

[0011] The crank assembly is further configured such that when the crank assembly is in a neutral state, the third edge abuts against the elastic member, and the crank assembly presses down on the elastic member to cause it to deform, and the crank assembly is clamped toward each other by the elastic force of the elastic member and the pressure of the pin and is relatively fixed.

[0012] Preferably, the crank assembly is provided with a knob assembly at one end away from the rotating end thereof, and the knob assembly is rotatably connected to the bottom plate of the crank assembly.

[0013] Preferably, the knob assembly includes a knob body and a support member, the bottom of the support member is fixedly connected to the bottom plate of the crank assembly, and the limiting portion on the top of the support member extends into the inner cavity of the knob body, and the diameter of the limiting portion is larger than the inner diameter of the through hole at the bottom of the knob body and smaller than the inner diameter of the inner cavity of the knob body;

[0014] The rotating assembly is configured such that when the knob body moves vertically to abut against the limiting portion, a gap exists between the bottom of the knob body and the bottom plate of the crank assembly, and the knob body can rotate around the axis of the support member.

[0015] Preferably, the bottom of the support member is fixedly connected to the bottom plate of the crank assembly through a screw assembly, and an elastic washer is provided between the contact surface between the bottom of the support member and the bottom plate of the crank assembly.

[0016] Preferably, a vertically arranged accommodating chamber is provided at the bottom of one end of the accommodating groove body, and the shape of the accommodating chamber is adapted to the shape of the knob body. When the crank assembly is in the accommodating state, the knob body is accommodated in the accommodating chamber.

[0017] Preferably, the knob body is a cylindrical structure.

[0018] Preferably, the accommodating trough body is provided with a recessed portion on both side inner walls away from its rotating end, and the edges on both sides of the bottom plate of the crank assembly are provided with protrusions matching the recessed portions, and when the crank assembly is in the receiving state, the protrusions are embedded in the recessed portions.

[0019] Preferably, the drain cleaner further comprises a hand-held handle, which is fixedly mounted on the outer side of the lower cover.

[0020] Preferably, the plumbing cleaner further comprises a locking switch, which is provided at the bottom of the lower cover portion and is used to limit the length of the coil spring tube extending out of the bottom opening of the lower cover portion.

[0021] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0022] The utility model provides a drain cleaner, which is provided with a foldable crank assembly. The crank assembly includes a storage state and a stretched state, which is convenient for storage and carrying of the drain cleaner when not in use. The crank assembly is rotatably connected to the receiving groove in the drain cleaner body, a notch is provided at the bottom of the receiving groove, an elastic member is provided in the notch, one end of the elastic member is fixedly connected to the edge of one side of the notch, and the distance from the rotation center of the crank assembly to the edge of the rotation end of the crank assembly is greater than the distance from the rotation center of the crank assembly to the top surface of the elastic member, that is, when the crank assembly is in the storage state When the crank assembly is in the extended state, the rotating end of the crank assembly is also subjected to the reverse elastic force of the compressive elasticity and the pressure of the fixed position pin at the same time, thereby achieving a fixing effect. Similarly, when the crank assembly is in the extended state, the rotating end of the crank assembly is also subjected to the reverse elastic force of the compressive elasticity and the pressure of the fixed position pin at the same time, thereby achieving a fixing effect. Therefore, through the utility model, the crank assembly can maintain a stable posture in the retracted state and the extended state, avoiding shaking or even falling off, and effectively improving working efficiency and storage convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of the dredge provided by the utility model in the accommodation state;

[0024] Figure 2 A schematic diagram of the structure of the dredge provided by the utility model in the expanded state;

[0025] Figure 3 A schematic diagram of the exploded structure of the dredge provided by the utility model;

[0026] Figure 4 A schematic structural diagram of the knob assembly provided by the utility model;

[0027] Figure 5 A schematic structural diagram of the accommodating chamber, the recessed portion, and the protruding portion provided by the present invention;

[0028] Figure 6 A partially enlarged structural diagram of the crank assembly provided by the utility model in an extended state;

[0029] Figure 7 A partially enlarged structural diagram of the crank assembly provided by the utility model in the accommodated state;

[0030] Figure 8 A schematic diagram of the dimensions of the crank assembly and the elastic member provided by the present invention.

[0031] Explanation of the reference numerals: 1: drain cleaner body; 2: upper cover; 3: lower cover; 4: coil spring tube; 5: accommodating tank; 6: crank assembly; 7: latch; 8: elastic member; 9: first edge; 10: second edge; 11: third edge; 12: knob assembly; 13: knob body; 14: support member; 15: limiting portion; 16: screw assembly; 17: elastic washer; 18: accommodating chamber; 19: recessed portion; 20: protrusion; 21: hand-held handle; 22: locking switch. DETAILED DESCRIPTION

[0032] The advantages and features of the present invention will become more apparent from the following description and claims.

[0033] See Figures 1 to 8 This embodiment provides a drain cleaner, the main structure of which includes a drain cleaner body 1 and a crank assembly 6. The drain cleaner body 1 includes an upper cover 2, a lower cover 3, and a coil spring tube 4. The upper cover 2 and the lower cover 3 are assembled vertically and rotatably connected, meaning that the upper cover 2 can rotate circumferentially relative to the lower cover 3 around the axis of the drain cleaner body 1. An axially extending receiving groove 5 is provided at the top of the upper cover 2. The coil spring tube 4 can be accommodated in an internal chamber formed by the upper cover 2 and the lower cover 3. When the drain cleaner is in operation, the coil spring tube 4 can extend from the bottom opening of the lower cover 3 to the external space. The coil spring tube 4 is in transmission connection with the upper cover 2, meaning that the coil spring tube 4 can rotate in response to the rotation of the upper cover 2.

[0034] The crank assembly 6 can be accommodated in the accommodating groove body 5, and the rotating end of the crank assembly 6 and the rotating end of the accommodating groove body 5 are rotatably connected through a pin 7 in a fixed position. The crank assembly 6 is set to have at least two working states, a accommodated state and an extended state. When the crank assembly 6 is in the accommodated state, the crank assembly 6 is completely accommodated in the accommodating groove body 5. When the crank assembly 6 is in the extended state, the crank assembly 6 is rotated around the rotation center to the axial extension direction of the accommodating groove body 5, that is, at this time the crank assembly 6 and the accommodating groove body 5 are set at 180°. Subsequently, by enabling the crank assembly 6 to rotate around the axial extension direction of the clearing device body 1, the upper cover part 2 and the coil spring tube 4 are driven to rotate.

[0035] A vertically penetrating slot is provided at the bottom of the rotating end of the accommodating slot body 5, and an elastic member 8 is provided in the slot. One end of the elastic member 8 is fixedly connected to one side edge of the slot. The elastic member 8 may preferably be a plate-shaped structure, and the thickness of the elastic member 8 gradually decreases from the end where the elastic member 8 is connected to the slot to the non-connected end. In this embodiment, when the elastic member 8 is subjected to external force, it will bend and deform, and generate an elastic force in the opposite direction toward the direction of the applied external force.

[0036] The rotating end of the crank assembly 6 is provided with a first edge 9 and a second edge 10 on opposite edges. Taking the case of the crank assembly 6 being in the retracted state as an example, the first edge 9 is set as the straight edge at the bottom of the rotating end of the crank assembly 6 at this time, and the second edge 10 is set as the straight edge at the top of the rotating end of the crank assembly 6 at this time. The transition between the first edge 9 and the second edge 10 is achieved by an arc-shaped structure, which is used to improve the smoothness of the rotation of the crank assembly 6 around the rotation center. The distance from the rotation center of the crank assembly 6 to the first edge 9 and the second edge 10 is set as a first distance L1, and the distance from the rotation center of the crank assembly 6 to the top surface of the elastic member 8 is set as a second distance L2, and the first distance L1 is limited to be greater than the second distance L2.

[0037] Therefore, in this embodiment, when the crank assembly 6 is in the retracted state, the first edge 9 abuts against the elastic member 8, and the crank assembly 6 will press the elastic member 8 downward to deform it. The elastic member 8 generates a vertical upward elastic force on the crank assembly 6 due to the bending deformation. At the same time, since the position of the latch 7 is fixed, the latch 7 will limit the vertical position movement of the crank assembly 6, that is, the crank assembly 6 is clamped and relatively fixed by the elastic force of the elastic member 8 and the pressure of the latch 7. Similarly, when the crank assembly 6 is in the extended state, the second edge 10 abuts against the elastic member 8, and the crank assembly 6 will also press the elastic member 8 downward to deform it. The elastic member 8 generates a vertical upward elastic force on the crank assembly 6 due to the bending deformation. At the same time, since the position of the latch 7 is fixed, the latch 7 will limit the vertical position movement of the crank assembly 6, that is, the crank assembly 6 is also clamped and relatively fixed by the elastic force of the elastic member 8 and the pressure of the latch 7.

[0038] In summary, this embodiment provides a drain cleaner, which realizes the foldability of the crank assembly 6. Based on the structural improvement of the crank assembly 6 and the accommodating groove body 5, the crank assembly 6 can maintain a stable posture when it is in the accommodated state, preventing the crank assembly 6 from falling off due to slight shaking of the drain cleaner, effectively improving the storage portability of the drain cleaner. At the same time, the crank assembly 6 can also maintain a stable posture when it is in the stretched state, preventing the crank assembly 6 from shaking or even falling off when the user holds the crank assembly 6 and rotates it, effectively improving the working efficiency and working safety.

[0039] The specific structure and function of the dredge provided by this embodiment will be described in further detail below:

[0040] Preferably, in this embodiment, the rotating end of the crank assembly 6 is further provided with a third edge 11, and the third edge 11 is arranged between the first edge 9 and the second edge 10, that is, the third edge 11 is distributed at 90° to the first edge 9 and the second edge 10, respectively, and the third edge 11 is transitioned to the first edge 9 and the second edge 10 respectively through an arc structure, and the distance from the rotation center of the crank assembly 6 to the third edge 11 is also set to the first distance L1.

[0041] It is assumed that the crank assembly 6 has a third working state, the neutral state, that is, the crank assembly 6 rotates around the rotation center until it is in the same direction as the extension direction of the axis of the clearing device body 1. When the crank assembly 6 is in the neutral state, the third edge 11 abuts against the elastic member 8, and the crank assembly 6 will press down the elastic member 8 to cause it to deform. The elastic member 8 generates a vertical upward elastic force on the crank assembly 6 due to the bending deformation. At the same time, since the position of the pin 7 is fixed, the pin 7 will limit the vertical position movement of the crank assembly 6, that is, the crank assembly 6 is clamped in opposite directions by the elastic force of the elastic member 8 and the pressure of the pin 7 and is relatively fixed. Therefore, in this embodiment, when the crank assembly 6 is set in a neutral state, it can also fully maintain a stable posture. When the drain cleaner is in an operating space with limited lateral space but sufficient vertical space, the user can hold the crank assembly 6 vertically and enable the crank assembly 6 to rotate around the axis extension direction of the drain cleaner body 1, thereby driving the upper cover 2 and the coil spring tube 4 to rotate, thereby realizing flexible and efficient application of the drain cleaner in different operating spaces.

[0042] Preferably, in this embodiment, the crank assembly 6 is provided with a knob assembly 12 at the end away from its rotating end, and the knob assembly 12 is rotatably connected to the base plate of the crank assembly 6. The user can directly hold the knob assembly 12 to control the crank assembly 6 to rotate around the axis extension direction of the drain cleaner body 1.

[0043] Specifically, the knob assembly 12 includes a knob body 13 and a support member 14. The bottom of the support member 14 is fixedly connected to the bottom plate of the crank assembly 6. A stopper 15 is provided at the top of the support member 14. The knob body 13 has an inner cavity. The stopper 15 of the support member 14 can vertically extend into the inner cavity of the knob body 13. The diameter of the stopper 15 of the support member 14 is larger than the inner diameter of the through hole at the bottom of the knob body 13, but smaller than the inner diameter of the inner cavity of the knob body 13. During the rotation of the crank assembly 6, the user can directly grasp the knob body 13. When the knob body 13 moves vertically to abut the stopper 15 of the support member 14, a certain gap exists between the bottom of the knob body 13 and the bottom plate of the crank assembly 6. In other words, the knob body 13 can freely rotate relative to the bottom plate of the crank assembly 6 around the axis of the support member 14, thereby improving the convenience of operation of the crank assembly 6 during the rotation process.

[0044] Furthermore, the bottom of the support member 14 is fixedly connected to the bottom plate of the crank assembly 6 through a screw assembly 16, and an elastic washer 17 is provided between the contact surface between the bottom of the support member 14 and the bottom plate of the crank assembly 6 to improve the stability of the crank assembly 6 during rotation.

[0045] Furthermore, the knob body 13 is a cylindrical structure, which conforms to the natural gripping method of the human hand and provides a stable and comfortable gripping point.

[0046] Preferably, in this embodiment, the accommodating groove body 5 is provided with a vertically arranged accommodating chamber 18 at the bottom of the groove away from its rotating end. The shape of the accommodating chamber 18 is adapted to the shape of the knob body 13. When the crank assembly 6 is in the accommodated state, the knob body 13 can be completely accommodated in the accommodating chamber 18, further reducing the overall volume occupied by the drain cleaner when the crank assembly 6 is in the accommodated state.

[0047] Preferably, in this embodiment, the accommodating trough body 5 is provided with a recessed portion 19 on the inner walls on both sides away from the rotating end thereof, and the edges on both sides of the bottom plate of the crank assembly 6 are provided with protrusions 20 matching the recessed portions 19. When the crank assembly 6 is in the accommodated state, the protrusions 20 can be embedded in the recessed portions 19, and are further used to fix the crank assembly 6 and the accommodating trough body 5, so as to prevent the clearing device from shaking when the crank assembly 6 is in the accommodated state, and the crank assembly 6 from falling off by itself.

[0048] Preferably, in this embodiment, the drain cleaner is provided with a handheld handle 21, which can be fixed on the outer periphery of the lower cover portion 3. When the user controls the rotation of the crank assembly 6, the user's other hand can hold the handheld handle 21 to improve the overall posture stability of the drain cleaner.

[0049] Preferably, in this embodiment, the drain cleaner is provided with a locking switch 22, which is provided at the bottom of the lower cover portion 3. The locking switch 22 may optionally be provided with a rotatable knob structure, and a screw is connected to the tail end of the knob structure. By adjusting the knob structure, the screw can be advanced or retreated, thereby squeezing or releasing the coil spring tube 4, which is used to limit the length of the coil spring tube 4 extending out of the bottom opening of the lower cover portion 3.

[0050] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they will still fall within the scope of protection of the present invention.

Claims

1. A dredge, characterized in that: include: The plumber body includes an upper cover, a lower cover, and a coil spring tube. The upper cover is rotatably connected to the lower cover. An axially penetrating receiving groove is provided on the top of the upper cover. The coil spring tube is transmission-connected to the upper cover and can extend out of the bottom opening of the lower cover and rotate through the rotation of the upper cover. A crank assembly, the crank assembly can be accommodated in the accommodating tank body, and the rotating end of the crank assembly is rotatably connected to the rotating end of the accommodating tank body via a latch; a vertically penetrating notch is provided at the bottom of the rotating end of the accommodating tank body, an elastic member is provided in the notch, and one end of the elastic member is fixedly connected to a side edge of the notch; The rotating end of the crank assembly is provided with a first edge and a second edge at opposite edges, the first edge and the second edge being transitioned by an arc structure, the distance from the rotation center of the crank assembly to the first edge and the second edge being set as a first distance, and the distance from the rotation center of the crank assembly to the top surface of the elastic member being set as a second distance, and the first distance being limited to be greater than the second distance; The crank assembly is configured such that, when the crank assembly is in a retracted state, the first edge abuts against the elastic member, and the crank assembly presses down on the elastic member to cause it to deform, and the crank assembly is clamped toward each other by the elastic force of the elastic member and the pressure of the latch and is relatively fixed; when the crank assembly is in an extended state, the second edge abuts against the elastic member, and the crank assembly presses down on the elastic member to cause it to deform, and the crank assembly is clamped toward each other by the elastic force of the elastic member and the pressure of the latch and is relatively fixed.

2. The dredge according to claim 1, characterized in that: The rotating end of the crank assembly is further provided with a third edge, the third edge being provided between the first edge and the second edge, and transitioning to the first edge and the second edge respectively via an arc structure, and a distance from the rotation center of the crank assembly to the third edge is set to be a first distance; The crank assembly is further configured such that when the crank assembly is in a neutral state, the third edge abuts against the elastic member, and the crank assembly presses down on the elastic member to cause it to deform, and the crank assembly is clamped toward each other by the elastic force of the elastic member and the pressure of the pin and is relatively fixed.

3. The dredge according to claim 1, characterized in that: The crank assembly is provided with a knob assembly at one end away from the rotating end thereof, and the knob assembly is rotatably connected to the bottom plate of the crank assembly.

4. The dredge according to claim 3, characterized in that: The knob assembly includes a knob body and a support member, wherein the bottom of the support member is fixedly connected to the bottom plate of the crank assembly, and the limiting portion at the top of the support member extends into the inner cavity of the knob body, and the diameter of the limiting portion is larger than the inner diameter of the through hole at the bottom of the knob body and smaller than the inner diameter of the inner cavity of the knob body; The rotating assembly is configured such that when the knob body moves vertically to abut against the limiting portion, a gap exists between the bottom of the knob body and the bottom plate of the crank assembly, and the knob body can rotate around the axis of the support member.

5. The dredge according to claim 4, characterized in that: The bottom of the support member is fixedly connected to the bottom plate of the crank assembly through a screw assembly, and an elastic washer is provided between the contact surface of the bottom of the support member and the bottom plate of the crank assembly.

6. The dredge according to claim 4, characterized in that: A vertically arranged accommodating chamber is provided at the bottom of one end of the accommodating groove body, and the shape of the accommodating chamber is adapted to the shape of the knob body. When the crank assembly is in the accommodating state, the knob body is accommodated in the accommodating chamber.

7. The dredge according to claim 4, characterized in that: The knob body is a column structure.

8. The dredge according to claim 1, characterized in that: The accommodating tank body is provided with a recessed portion on both side inner walls away from its rotating end, and the edges on both sides of the bottom plate of the crank assembly are provided with protrusions matching the recessed portions. When the crank assembly is in the receiving state, the protrusions are embedded in the recessed portions.

9. The dredge according to claim 1, characterized in that: It also includes a hand-held handle, which is sleeved and fixed on the outer side of the lower cover.

10. The plumbing fixture according to claim 1, wherein: It also includes a locking switch, which is arranged at the bottom of the lower cover and is used to limit the length of the coil spring tube extending out of the bottom opening of the lower cover.

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