A telescopic adapter for a drain cleaner

Abstract

The application discloses a telescopic adapter device of a dredging machine, which comprises a protective cover arranged at the outlet part of a flexible shaft of the dredging machine, a connecting head detachably connected with the protective cover, a flexible shaft guide pipe with an inner end fixed in the inner hole of the connecting head, a sliding guide pipe sleeved on the outer wall of the flexible shaft guide pipe, a clamping joint arranged at the inner end of the sliding guide pipe and used for clamping the flexible shaft guide pipe, a bending part arranged at the outer end of the sliding guide pipe, and a rubber sleeve sleeved on the outer wall of the bending part. The telescopic adapter device of the dredging machine can not only avoid the damage of the flexible shaft to the glaze surface of the toilet bending part, but also increase the bending capacity of the flexible shaft, effectively prevent the flexible shaft of the dredging machine from being wound and knotted at the inlet of the toilet bending part, and especially can realize the best length and angle adjustment of users with different heights and different operation habits, thereby being more favorable to improve the efficiency of the dredging pipeline and the comfort of the operator. The device is fast in installation and dismounting, and after being dismounted, the overall length can be greatly shortened, thereby being convenient for storage.

Description

Technical Field

[0001] This invention relates to a pipe cleaning machine, and more particularly to a retractable adapter for a pipe cleaning machine. Background Technology

[0002] Existing drain cleaning machines primarily consist of a flexible shaft driven by a power mechanism. During operation, the power mechanism drives the flexible shaft to rotate and extend / retract, allowing it to penetrate deeper into the pipe to clear blockages. Examples include: application number 201720178385.X, "Flexible Shaft Extension / Retraction Control Mechanism for Drain Cleaning Machine and Drain Cleaning Machine"; application number 202023301499.X, "Drain Cleaner"; and application number 201720177673.3, "Drum Drive Structure for Drain Cleaning Machine and Drain Cleaning Machine". For decades since the invention of drain cleaning machines, directly inserting the machine's flexible shaft into the pipe to be cleaned has been the industry standard and continues to this day.

[0003] However, the traditional drain cleaning machine structure described above is prone to tangling when unclogging pipes, as the rotating and extending flexible shaft can easily become knotted and fail to penetrate the pipes. When unclogging toilets, the rotating and extending flexible shaft comes into direct contact with the toilet bowl, which can damage the toilet glaze. Summary of the Invention

[0004] The purpose of this invention is to provide a retractable adapter for a drain cleaning machine. This adapter not only prevents damage to the glaze of the toilet bowl's bend from the flexible shaft, but also increases the flexible shaft's bending ability, effectively preventing the flexible shaft from coiling and knotting at the toilet bowl's bend entrance. In particular, it allows users of different heights and operating habits to make optimal adjustments to the length and angle, which is more conducive to improving the efficiency of drain cleaning and the comfort of the operator. The device is quick to install and disassemble. When not in use, it can be disassembled to greatly shorten the overall length for easy storage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A retractable adapter for a drain cleaning machine includes a protective cover disposed at the outlet of the flexible shaft of the drain cleaning machine, a connector detachably connected to the protective cover, a flexible shaft guide tube whose inner end is fixed in the inner hole of the connector, a sliding guide tube sleeved on the outer wall of the flexible shaft guide tube, the inner end of the sliding guide tube being provided with a clamping joint for clamping the flexible shaft guide tube, and the outer end of the sliding guide tube being provided with a bend, the outer wall of the bend being sleeved with a rubber sleeve.

[0007] The protective cover has a through hole in the middle for the flexible shaft to pass through, and a threaded buckle B at the outer end of the protective cover for engaging with the spiral buckle A of the connector. The protective cover is connected to the outlet of the flexible shaft by bolts, or by corresponding spiral buckles, or by adhesive bonding, or by welding.

[0008] The clamping connector includes a clamping sleeve, a lever, a pin, and an elastic locking block. The inner end of the sliding guide tube is fixed in the inner hole of the clamping sleeve. The pin is set on the lugs at both ends of the clamping sleeve. The cam at one end of the lever handle is hinged to the pin. When the lever handle is pressed towards the clamping sleeve, the lever handle drives the cam to rotate around the pin. The cam presses the elastic locking block, and the elastic locking block abuts against the outer wall of the flexible shaft guide tube radially from the through hole of the clamping sleeve and the sliding guide tube to clamp the flexible shaft guide tube.

[0009] The connector consists of an inner cylinder and an outer ring located on the outer periphery of the inner end of the inner cylinder. The spiral buckle A is located at the inner end of the outer ring. The inner end of the inner cylinder is provided with a connector positioning protrusion that matches the positioning groove of the flexible shaft guide tube. The outer end of the inner cylinder is provided with a screw hole corresponding to the fixing hole of the flexible shaft guide tube. The front end of the screw passes through the screw hole and extends into the fixing hole of the flexible shaft guide tube.

[0010] The protective cover is connected to the outlet of the drain cleaner's flexible shaft via a spiral buckle at its inner end.

[0011] The elastic locking block is a rubber pad with an arc-shaped surface at its inner end.

[0012] Both the sliding conduit and the flexible shaft conduit are made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Due to the adoption of the above technical solution, a protective cover is provided at the outlet of the flexible shaft of the drain cleaner. The connector and the protective cover are detachably connected. The inner end of the flexible shaft guide tube is fixed in the inner hole of the connector. A sliding guide tube is sleeved on the outer wall of the flexible shaft guide tube. The inner end of the sliding guide tube is provided with a clamping joint for clamping the flexible shaft guide tube. The outer end of the sliding guide tube is provided with a bent portion. A rubber sleeve is sleeved on the outer wall of the bent portion. This retractable adapter with this structure can be quickly installed on the drain cleaner when unclogging a toilet. The rubber sleeve at the front prevents the flexible shaft from hitting the toilet. Damage to the glaze; the sliding guide has a bend that guides the flexible shaft, increasing its bending ability and effectively preventing the flexible shaft of the drain cleaner from coiling and knotting at the bend entrance; the sliding guide and its clamping joint can extend and retract along the flexible shaft guide and rotate around the flexible shaft guide, allowing users of different heights and operating habits to make optimal adjustments to the length and angle, which is more conducive to improving the efficiency of drain cleaning and the comfort of the operator; the sliding guide and flexible shaft guide can be easily disassembled, and when not in use, they can be disassembled to greatly shorten the overall length and facilitate storage.

[0014] A further beneficial effect is that the clamping connector includes a clamping sleeve, a lever, a pin, and an elastic locking block. The inner end of the sliding guide tube is fixed in the inner hole of the clamping sleeve. The pin is set on the lugs at both ends of the clamping sleeve. The cam at one end of the lever handle is hinged to the pin. With this structure, the clamping connector can slide along the flexible shaft guide tube. When the lever handle is pressed towards the clamping sleeve, the lever handle drives the cam to rotate around the pin. The cam squeezes the elastic locking block. The elastic locking block abuts against the outer wall of the flexible shaft guide tube radially from the through hole of the clamping sleeve and the sliding guide tube to clamp the flexible shaft guide tube. This allows users of different heights and different operating habits to make the best adjustment of the length and angle, which is more conducive to improving the efficiency of pipe unblocking and the comfort of the operator.

[0015] A further beneficial effect is that the outer end of the protective cover is provided with a threaded buckle B for engaging with the spiral buckle A of the connector; the protective cover is connected to the outlet of the flexible shaft by bolts, or by corresponding spiral buckles, or by adhesive bonding, or by welding. This protective cover structure is advantageous for two reasons: first, it facilitates modification: ordinary drain cleaning machines can be modified to use the retractable adapter of this invention by adding a protective cover to the outlet of the flexible shaft; second, it can increase the overlap length of the buckle with the connector, thereby improving the stability of the connection.

[0016] A further beneficial effect is that the connector consists of an inner cylinder and an outer ring located on the outer periphery of the inner end of the inner cylinder. The spiral buckle A is located at the inner end of the outer ring. The inner end of the inner cylinder is provided with a connector positioning protrusion that matches the positioning groove of the flexible shaft guide tube. The outer end of the inner cylinder is provided with a screw hole corresponding to the fixing hole of the flexible shaft guide tube. The front end of the screw passes through the screw hole and extends into the fixing hole of the flexible shaft guide tube. This structure can quickly and stably connect the flexible shaft guide tube. It can also increase the superimposed length of the buckle with the protective cover. Furthermore, the spiral buckle A is located at the outer ring port, which increases the distance between the threaded buckle and the axis, improves the firmness of the spiral buckle connection, and makes the buckle connection easier. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the split structure.

[0019] The technical features represented by the labels in the diagram are as follows:

[0020] 1. Rubber sleeve, 2. Sliding guide tube, 2-1. Clamping connector, 2-1-3. Clamping sleeve, 2-1-4. Latch, 2-1-4-1. Pin, 2-1-5. Elastic locking block, 2-1-6. Bending part, 2-2. Flexible shaft guide tube, 7. Flexible shaft guide tube fixing hole, 7-1. Flexible shaft guide tube positioning groove, 7-2. Connector, 8. Inner cylinder, 8-0. Connector positioning protrusion, 8-1. Spiral buckle A, 8-2. Outer ring, 8-3. Screw hole, 8-4. Screw, 9. Protective cover, 10. Spiral buckle B, 10-1. Inner end spiral buckle of protective cover, 10-2. Through hole of protective cover, 10-3. Unclogging machine, 11. Flexible shaft, 12. Detailed Implementation

[0021] To make the technical solution of the present invention clearer, the following description is provided in conjunction with the appendix. Figure 1 and 2 This invention will be described in detail below. It should be understood that the specific embodiments described in this specification are merely for explaining the invention and are not intended to limit the scope of protection of the invention.

[0022] This invention relates to a retractable adapter for a drain cleaning machine, comprising a protective cover 10 disposed at the outlet of the flexible shaft 12 of the drain cleaning machine 11, a connector 8 detachably connected to the protective cover 10, a flexible shaft guide tube 7 whose inner end is fixed to the inner hole of the connector 8, and a sliding guide tube 2 sleeved on the outer wall of the flexible shaft guide tube 7. The inner end of the sliding guide tube 2 is provided with a clamping connector 2-1 for clamping the flexible shaft guide tube 7, and the outer end of the sliding guide tube 2 is provided with a bending part 2-2. The outer wall of the bending part 2-2 is sleeved with a rubber sleeve 1.

[0023] Preferably, the protective cover 10 has a through hole 10-3 in the middle for the flexible shaft 12 to pass through, and the outer end of the protective cover 10 has a threaded buckle B10-1 for engaging with the spiral buckle A8-2 of the connector 8; the protective cover 10 and the outlet of the flexible shaft 12 are connected by bolts, or by corresponding spiral buckles, or by adhesive bonding, or by welding. The clamping connector 2-1 includes: a clamping sleeve 2-1-3, a lever 2-1-4, a pin 2-1-5, and an elastic locking block. Preferably, the inner end of the elastic locking block has a rounded rubber pad 2-1-6. The inner end of the sliding guide tube 2 is fixed in the inner hole of the clamping sleeve 2-1-3. The pin 2-1-5 is set on the lugs at both ends of the clamping sleeve 2-1-3. The cam 2-1-4-1 at one end of the lever of the lever 2-1-4 is hinged to the pin 2-1-5. When the lever is pressed towards the clamping sleeve 2-1-3, the lever drives the cam 2-1-4-1 to rotate around the pin 2-1-5. The cam 2-1-4-1 presses the elastic locking block 2-1-6. The elastic locking block 2-1-6 abuts radially against the outer wall of the flexible shaft guide tube 7 from the through hole of the clamping sleeve 2-1-3 and the sliding guide tube 2 to clamp the flexible shaft guide tube 7. The connector 8 consists of an inner cylinder 8-0 and an outer ring 8-3 located on the outer periphery of the inner end of the inner cylinder 8-0. The spiral buckle A8-2 is located at the inner end of the outer ring 8-3. The inner end of the inner cylinder 8-0 is provided with a connector positioning protrusion 8-1 that matches the positioning groove 7-2 of the flexible shaft guide tube. The outer end of the inner cylinder 8-0 is provided with a screw hole 8-4 corresponding to the fixing hole 7-1 of the flexible shaft guide tube. The front end of the screw 9 passes through the screw hole 8-4 and extends into the fixing hole 7-1 of the flexible shaft guide tube. The protective cover 10 is engaged with a corresponding spiral buckle located at the outlet of the flexible shaft 12 of the drain cleaning machine 11 via the spiral buckle 10-2 at its inner end. The elastic locking block 2-1-6 is a rubber pad with an arc-shaped inner end. Both the sliding guide tube 2 and the flexible shaft guide tube 7 are made of stainless steel.

[0024] A telescopic adapter is added to the drain cleaning machine. The front has a rubber sleeve 1, which can effectively protect the glaze of the toilet. The sliding guide tube 2 has a bend 2-2, which increases the bending ability of the flexible shaft and prevents the flexible shaft from tangling. The telescopic function is added, which can allow users of different heights and operating habits to make the best adjustment of length and angle, which is more conducive to improving the efficiency of drain cleaning and the comfort of the operator. It is convenient to disassemble the sliding guide tube 2 and the flexible shaft guide tube 7. When not in use, they can be disassembled to greatly shorten the overall length and facilitate storage.

Claims

1. A retractable adapter for a dredging machine, characterized in that: The device includes a protective cover (10) installed at the outlet of the flexible shaft (12) of the dredging machine (11), a connector (8) detachably connected to the protective cover (10), a flexible shaft guide tube (7) with its inner end fixed in the inner hole of the connector (8), and a sliding guide tube (2) sleeved on the outer wall of the flexible shaft guide tube (7). The inner end of the sliding guide tube (2) is provided with a clamping connector (2-1) for clamping the flexible shaft guide tube (7), and the outer end of the sliding guide tube (2) is provided with a bend (2-2). The outer wall of the bend (2-2) is sleeved with a rubber sleeve (1). The sliding conduit (2) and its clamping connector (2-1) are configured to extend and retract along the flexible shaft conduit (7) and rotate around the flexible shaft conduit (7); The protective cover (10) has a through hole (10-3) in the middle for the flexible shaft (12) to pass through, and the outer end of the protective cover (10) has a threaded buckle B (10-1) for engaging with the spiral buckle A (8-2) of the connector (8). The protective cover (10) and the outlet of the flexible shaft (12) are connected by bolts, or by corresponding spiral buckles, or by adhesive bonding or welding. The connector (8) is composed of an inner cylinder (8-0) and an outer ring (8-3) located on the outer periphery of the inner end of the inner cylinder (8-0). The spiral buckle A (8-2) is located at the inner end of the outer ring (8-3). The inner end of the inner cylinder (8-0) is provided with a connector positioning protrusion (8-1) that is compatible with the positioning groove (7-2) of the flexible shaft guide tube. The outer end of the inner cylinder (8-0) is provided with a screw hole (8-4) corresponding to the fixing hole (7-1) of the flexible shaft guide tube. The front end of the screw (9) passes through the screw hole (8-4) and extends into the fixing hole (7-1) of the flexible shaft guide tube.

2. The retractable adapter for the dredging machine according to claim 1, characterized in that: The clamping connector (2-1) includes a clamping sleeve (2-1-3), a lever (2-1-4), a pin (2-1-5), and an elastic locking block (2-1-6). The inner end of the sliding guide tube (2) is fixed to the inner hole of the clamping sleeve (2-1-3). The pin (2-1-5) is set on the lugs at both ends of the clamping sleeve (2-1-3). The cam (2-1-4-1) at one end of the lever handle of the lever (2-1-4) is hinged to the pin (2-1-6). On 2-1-5), when the lever is pressed toward the clamping sleeve (2-1-3), the lever drives the cam (2-1-4-1) to rotate around the pin (2-1-5), and the cam (2-1-4-1) squeezes the elastic locking block (2-1-6). The elastic locking block (2-1-6) abuts against the outer wall of the flexible shaft guide (7) radially from the through hole of the clamping sleeve (2-1-3) and the sliding guide (2) to clamp the flexible shaft guide (7).

3. The retractable adapter for the dredging machine according to any one of claims 1 to 2, characterized in that: The protective cover (10) is connected to the outlet of the flexible shaft (12) of the drain cleaner (11) via a spiral buckle (10-2) at the inner end of the protective cover.

4. The retractable adapter for the dredging machine according to claim 2, characterized in that: The elastic locking block (2-1-6) is a rubber pad with an arc-shaped inner end.

5. The retractable adapter for the dredging machine according to any one of claims 1 to 2, characterized in that: Both the sliding conduit (2) and the flexible shaft conduit (7) are made of stainless steel.

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