A through-hole flexible shaft based on electric drill

Abstract

The utility model discloses a kind of through gun flexible shaft based on electric drill use, including connecting plate, the lower end of the connecting plate is provided with connecting shaft, upper end is provided with fixed box, fixed block adapted therewith is provided in the fixed box, the fixed block both ends are provided with symmetrical spring, one end of the spring is provided with fixed column, the both sides wall of the fixed box is provided with fixed hole, the fixed column is through the fixed hole and is slidably connected with it, the fixed block upper end is provided with telescopic component, the telescopic component upper end is provided with flexible shaft body, the flexible shaft body can be different setting, the connecting shaft outside is provided with fixed component, the versatility and use convenience of tool are improved, the stability of flexible shaft body operation is guaranteed, meet the cavity dredging operation of different depth or length.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric drill technical field more specifically, it relates to a kind of based on the through cannon flexible shaft of electric drill use. BACKGROUND

[0002] In the field of existing pipeline cleaning, the through cannon flexible shaft driven by electric drill is widely used in pipeline dirt cleaning of water heater, air conditioner, radiator and other equipment due to convenient operation and sufficient power, however, the existing through cannon flexible shaft has many problems in actual use, and it is difficult to meet the needs of efficient cleaning.

[0003] Firstly, the length of the traditional through cannon tool is fixed, and it cannot be flexibly adjusted according to the actual dredging needs. For cavities of different depths or lengths, different specifications of flexible shafts need to be replaced, which is cumbersome and inefficient.

[0004] At the same time, in the connection with common power tools such as electric drill, there is lack of stable and reliable fixing structure, which is easy to slip and fall off, which not only affects the dredging effect, but also may cause safety hazards.

[0005] In addition, the existing fixing assembly design is more complex, and the installation and disassembly process takes a long time, which is difficult to meet the needs of rapid operation, and the structure of the flexible shaft body is single, which cannot be adapted to different dredging scenes. For example, different pipe diameters and different types of blockages often require additional multiple flexible shafts, which increases the difficulty of carrying and management. TECHNICAL FIELD

[0006] (I) Technical problem solved

[0007] In view of the problems existing in the prior art, the utility model provides a through cannon flexible shaft based on the use of electric drill to solve the technical problems that the existing flexible shaft is easy to loosen or even fall off due to vibration and cannot be adapted to different dredging scenes mentioned in the background art.

[0008] (II) Technical scheme

[0009] To achieve the above purpose, the utility model provides the following technical scheme:

[0010] A through cannon flexible shaft based on the use of electric drill, comprising a connecting plate, a connecting shaft is arranged at the lower end of the connecting plate, and a fixing box is arranged at the upper end of the connecting plate, a fixing block adapted thereto is arranged in the fixing box, symmetrical springs are arranged at both ends of the fixing block, a fixing column is arranged at one end of the spring, fixing holes are arranged on both side walls of the fixing box, the fixing column penetrates through the fixing holes and is connected with the fixing holes in sliding mode, an extension assembly is arranged at the upper end of the fixing block, a flexible shaft body is arranged at the upper end of the extension assembly, the flexible shaft body can be different, and a fixing assembly is arranged outside the connecting shaft.

[0011] The utility model further sets up, the telescopic component includes fixed link, telescopic link and screw, the fixed link is connected with the fixed block, telescopic link passes through the fixed link and is connected with its sliding, be provided with a plurality of limit hole on the telescopic link, be provided with the sliding hole on the fixed link, the limit hole can coincide with the sliding hole, the screw passes through the limit hole, the sliding hole and is connected with its thread, can adjust the length of flexible axle flexibly, limit hole and sliding hole coincide and are fixed with screw after, guarantee length adjustment stable and do not loosen, adapt to the pipeline cleaning demand of different depth.

[0012] The utility model further sets up, the fixed component includes fixed ring, screw rod and nut, both ends of the fixed ring are provided with screw hole, the screw rod passes through the screw hole and is connected with its sliding, the nut is connected with the screw rod and is screwed, can firmly fixed connecting axle and electric drill, prevent skidding when working, promote power transmission efficiency, and adapt to the connecting part of different size.

[0013] The utility model further sets up, the spring is provided with the auxiliary rod, the auxiliary rod passes through the spring, the lateral wall of fixed block is provided with the symmetrical auxiliary hole, the auxiliary rod is connected with the auxiliary hole and is slidably connected, can play the guiding and limiting effect to spring, avoid the deviation or distortion of spring in the telescopic process.

[0014] The utility model further sets up, the handle is provided on the upper end of fixed column, be provided with the antiskid line on the handle, has provided the convenient force point for operating personnel, conveniently push and pull operation is carried out to fixed column.

[0015] The utility model further sets up, the protective cover is provided outside fixed column, the protective cover is connected with the fixed column and is screwed, can form effective protection to fixed column, avoid damaging by the collision of outside, further carry out the location.

[0016] The utility model further sets up, the outside wall of telescopic link is provided with the scale line, the scale line is evenly distributed along the axial direction of telescopic link, can intuitively understand the telescopic length of telescopic link through the scale line, make it convenient for accurate adjustment the overall length of flexible axle body according to actual demand.

[0017] (Three) beneficial effect

[0018] Compared with the prior art, the utility model provides a through cannon flexible axle based on electric drill use, has the following beneficial effects:

[0019] 1、The overall structure design realizes convenient adaptation with the electric drill, the connecting shaft at the lower end of the connecting plate and the fixing assembly outside can stably connect the device with the electric drill, without the need of special driving equipment, reduces the dependence on specific tools, widens the application range of the device, so that the operator can directly use the commonly used electric drill to provide power, and the universality and use convenience of the tool are improved.

[0020] 2、The cooperation structure of the fixed box and the fixed block enhances the stability of the device, the symmetrical springs at both ends of the fixed block act on the fixed column, the fixed column penetrates the fixed hole of the fixed box and is connected in sliding mode, under the action of the spring elastic force, the fixed column can be tightly engaged in the fixed hole, so that the fixed block is stably limited in the fixed box, the shaking of the fixed block during the work of the device is reduced, the stability of the soft shaft body operation is ensured, and different types and pipe diameters of the blockage can be adapted without the need of separately arranging tools for different scenes.

[0021] 3、The design of the telescopic assembly and the replaceable soft shaft body makes the device have good adaptability, the telescopic assembly can adjust the length of the soft shaft body according to the actual dredging demand, and meet the dredging operation of cavities with different depths or lengths. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the overall structure of the universal gun soft shaft based on the use of the electric drill in the utility model;

[0023] Figure 2 It is a schematic view of the overall structure of the universal gun soft shaft based on the use of the electric drill in the utility model;

[0024] Figure 3 It is a schematic view of the overall structure of the universal gun soft shaft based on the use of the electric drill in the utility model;

[0025] Figure 4 It is an exploded view of the fixed rod, the telescopic rod and the screw in the utility model;

[0026] Figure 5 It is a schematic view of the internal cross section of the fixed box and the fixed block in the utility model.

[0027] In the drawing: 1, connecting plate; 2, connecting shaft; 3, fixed box; 4, fixed block; 5, spring; 6, fixed column; 7, soft shaft body; 8, fixed rod; 9, telescopic rod; 10, screw; 11, limiting hole; 12, sliding hole; 13, fixed ring; 14, screw rod; 15, nut; 16, auxiliary rod; 17, handle; 18, protective cover; 19, auxiliary hole. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0030] In the present application, unless otherwise specified, the orientation such as "up, down" is generally directed to the direction shown in the drawings, or is directed to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right shown in the drawings; "inner, outer" refers to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the present application.

[0031] Please refer to Figures 1-5 A kind of based on electric drill uses and passes through cannon flexible shaft, including connecting plate 1, the lower end of the connecting plate 1 is provided with connecting shaft 2, upper end is provided with fixed box 3, the fixed box 3 is provided with the fixed block 4 that is adapted to it in, the fixed block 4 both ends are provided with symmetrical spring 5, one end of the spring 5 is provided with fixed column 6, both side walls of the fixed box 3 are provided with fixed hole, the fixed column 6 penetrates the fixed hole and is slidably connected with it, the fixed block 4 upper end is provided with telescopic component, the telescopic component upper end is provided with flexible shaft body 7, the flexible shaft body 7 can be different setting, the connecting shaft 2 outside is provided with fixed component.

[0032] The spring 5 is provided with auxiliary rod 16, the auxiliary rod 16 penetrates the spring 5, the side wall of the fixed block 4 is provided with symmetrical auxiliary hole 19, the auxiliary rod 16 and the auxiliary hole 19 are connected with damping sliding.

[0033] The fixed column 6 upper end is provided with handle 17, the handle 17 is provided with anti-skid line.

[0034] In the embodiment, first need to complete the connection operation with electric drill, operator inserts the connecting shaft 2 at the lower end of the connecting plate 1 into the output shaft interface of electric drill, then passes through the screw hole at both ends of the fixed ring 13, makes the fixed ring 13 contract and tightly fits the connecting shaft 2 and the interface of electric drill by screwing the nut 15, to ensure that the device is firmly connected with electric drill, avoid loosening or falling off during work, the overall length of the flexible shaft body 7 can be adjusted by telescopic component according to the depth or length of the cavity to be dredged, loosen the screw 10 on the fixed rod 8, make the telescopic rod 9 slide in the fixed rod 8, at this time, the operator can accurately control the telescopic amount according to the scale line on the outer side wall of the telescopic rod 9, when the telescopic rod 9 slides to the appropriate position, ensure that the limiting hole 11 on the telescopic rod 9 coincides with the sliding hole 12 on the fixed rod 8, then tighten the screw 10 again, make it penetrate the limiting hole 11 and the sliding hole 12 and be connected by screw thread, thereby fixing the telescopic rod 9 relative to the fixed rod 8, complete the adjustment of the length of the flexible shaft.

[0035] More specifically, when the different soft shaft body 7 needs to be replaced according to the dredging scene, the operator can operate through the handle 17 on the upper end of the fixed column 6, hold the handle 17 with anti-skid lines, press the fixed column 6 inward, at this time the springs 5 at both ends of the fixed block 4 are compressed, the auxiliary rod 16 makes a damping sliding in the auxiliary hole 19 of the side wall of the fixed block 4, providing stable guidance for the expansion and contraction of the spring 5, with the fixed column 6 moving inward and disengaging from the fixed hole of the two side walls of the fixed box 3, the fixed block 4 is unlocked in the fixed box 3, and can be taken out from the fixed box 3, after replacing the new fixed block 4 with the required soft shaft body 7, the handle 17 is loosened, the spring 5 is reset under the action of its own elastic force, the fixed column 6 is pushed to pass through the fixed hole of the fixed box 3 again, the new fixed block 4 is stably limited in the fixed box 3, and the replacement of the soft shaft body 7 is completed.

[0036] Please refer to Figures 1-5 , as an embodiment of the telescopic assembly: the telescopic assembly includes a fixed rod 8, a telescopic rod 9 and a screw 10, the fixed rod 8 is connected with the fixed block 4, the telescopic rod 9 penetrates the fixed rod 8 and is in sliding connection with it, a plurality of limiting holes 11 are arranged on the telescopic rod 9, a sliding hole 12 is arranged on the fixed rod 8, the limiting hole 11 and the sliding hole 12 can coincide, and the screw 10 penetrates the limiting hole 11 and the sliding hole 12 and is in threaded connection with them.

[0037] Specifically, in the process of adjusting the length, the operator can observe the relative position of the plurality of limiting holes 11 on the telescopic rod 9 and the sliding hole 12 on the fixed rod 8, when sliding to the required length, make one of the limiting holes 11 and the sliding hole 12 completely coincide, then, re-penetrate the limiting hole 11 and the sliding hole 12 which coincide, and tighten the screw 10 to make it in threaded connection with both, so as to firmly fix the telescopic rod 9 and the fixed rod 8, ensure that there is no relative sliding during operation, and ensure the stability of the length of the soft shaft body 7.

[0038] Please refer to Figures 1-5 , as an embodiment of the fixed assembly: the fixed assembly includes a fixed ring 13, a screw rod 14 and a nut 15, screw holes are arranged at both ends of the fixed ring 13, the screw rod 14 penetrates the screw holes and is in sliding connection with them, and the nut 15 is adapted to and in threaded connection with the screw rod 14.

[0039] Specifically, the operator inserts the screw rod 14 through the screw holes at both ends of the fixing ring 13, connects both ends of the fixing ring 13 through the screw rod 14, and then tightens the nut 15 matched with the screw rod 14. As the nut 15 is continuously tightened, the screw rod 14 generates an inward pulling force on both ends of the fixing ring 13, forcing the fixing ring 13 to shrink and deform, and its inner diameter gradually decreases and tightly fits the outside of the connecting shaft 2 and the drill interface. In this way of shrinkage and fastening, the fixing ring 13 can generate a continuous and uniform holding force to firmly fix the connecting shaft 2 and the drill interface together, effectively preventing relative rotation or loosening between the two during operation of the device.

[0040] Referring to Figures 1-5 , as an embodiment of the protective cover 18: the outer side of the fixing column 6 is provided with a protective cover 18, which is threadedly connected with the fixing column 6.

[0041] Specifically, the protective cover 18 is tightened on the outer side of the fixing column 6 to effectively protect the fixing column 6 and prolong its service life, while being able to limit the position.

[0042] Referring to Figures 1-5 , as an embodiment of the scale line: the outer side wall of the telescopic rod 9 is provided with a scale line, which is uniformly distributed along the axial direction of the telescopic rod 9.

[0043] Specifically, by observing the scale line and combining with the actual operation requirements, the telescopic rod 9 is slid to the appropriate position, for example, if the length of the flexible shaft needs to be increased, the telescopic rod 9 is pulled outwards, and the change in the scale line value is observed until the desired length is reached; if it needs to be shortened, the telescopic rod 9 is pushed inwards and the contraction amount is confirmed by referring to the scale line.

[0044] In summary, when the overall device is in use:

[0045] The operator first inserts the connecting shaft 2 at the lower end of the connecting plate 1 into the output shaft interface of the drill, at which time the fixing ring 13 sleeved on the outer side of the connecting shaft 2 is in a natural relaxed state. Then, the screw rod 14 is inserted through the screw holes at both ends of the fixing ring 13, and the initial state of the fixing ring 13 can be flexibly adjusted since the screw rod 14 is in sliding connection with the screw holes. Next, the nut 15 matched with the screw rod 14 is tightened, and as the nut 15 is tightened, the screw rod 14 generates a continuous inward pulling force on both ends of the fixing ring 13, forcing the fixing ring 13 elastically to shrink and deform, and its inner diameter gradually decreases and tightly fits the outside of the connecting axis 2 and the drill interface, generating a uniform and lasting radial holding force to firmly fix the connecting shaft 2 and the drill interface, effectively preventing relative rotation or falling off of the two due to vibration or excessive torque during work, and providing a stable foundation for subsequent power transmission.

[0046] When it is necessary to replace different types of soft shaft body 7 according to the dredging scene, first, the protective cover 18 outside the fixed column 6 is removed (the protective cover 18 is fixed by threaded connection, and can be separated by reverse rotation), the operator holds the handle 17 and presses the fixed column 6 inward, at this time, the symmetrical springs 5 at both ends of the fixed block 4 are compressed and shrink under the compression force, and the auxiliary rod 16 penetrating the spring 5 does damping sliding in the auxiliary hole 19 of the side wall of the fixed block 4, the setting of the auxiliary rod 16 provides accurate guidance for the extension and contraction of the spring 5, avoids the horizontal deviation or distortion of the spring 5 when stressed, ensures that the spring force of the spring 5 can stably act on the fixed column 6 in the axial direction, prevents the fixed effect from fluctuating due to abnormal deformation of the spring 5, and as the fixed column 6 moves inward and completely separates from the fixed hole of the side wall of the fixed box 3, the locking state of the fixed block 4 and the fixed box 3 is released, and the fixed block 4 can be easily taken out from the fixed box 3, after replacing the new fixed block 4 with the required soft shaft body 7, the handle 17 is loosened, the spring 5 is reset under the action of its own elastic force, the fixed column 6 is pushed to penetrate the fixed hole of the fixed box 3 again and is connected with the fixed hole in sliding connection, the new fixed block 4 is stably limited in the fixed box 3, and finally the protective cover 18 is screwed to complete the replacement.

[0047] When adjusting the length of the soft shaft body 7, the operator first loosens the screw 10 on the fixed rod 8, so that the screw 10 no longer constrains the telescopic rod 9. Since the telescopic rod 9 penetrates the fixed rod 8 and the two are in sliding connection, the telescopic rod 9 can move freely in the axial direction. At this time, the scale lines uniformly distributed on the outer wall of the telescopic rod 9 in the axial direction play a role, and the operator can intuitively master the telescopic length by observing the scale lines, avoiding deviation caused by experience adjustment. When the telescopic rod 9 is slid to the required length, a group of limiting holes 11 on the telescopic rod 9 is completely overlapped with the sliding hole 12 on the fixed rod 8, then the screw 10 is re-penetrated through the overlapped limiting hole 11 and the sliding hole 12 and is tightened, and the telescopic rod 9 and the fixed rod 8 are firmly fixed by the threaded connection of the screw 10 and the two, ensuring that relative sliding does not occur during operation, and ensuring the stability of the length of the soft shaft body 7.

[0048] After starting the electric drill, the power transmission follows the force transmission principle of rigid connection, and the rotating power of the electric drill is transmitted to the connecting plate 1 through the connecting shaft 2 in turn, and then is transmitted to the telescopic assembly through the fixed box 3 and the fixed block 4, and finally drives the soft shaft body 7 to rotate at high speed for use.

[0049] In all the above-mentioned solutions, the connection between the two components can be selected according to actual conditions, such as welding, bolt and nut connection, bolt or screw connection or other known connection modes, which will not be described one by one. In the above, when referring to the fixed connection, welding is preferred, although the embodiments of the utility model have been shown and described, for those skilled in the art, it can be understood that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0050] In all the above-mentioned solutions, the operation of the electrical element is controlled by the controller. Since the controller is matched with a commonly used device, its control principle and circuit connection belong to existing known and mature technology, and its electrical connection relationship and specific circuit structure will not be described here.

Claims

1. A flexible shaft for use in electric drills, comprising a connecting plate (1), characterized in that: The lower end of the connecting plate (1) is provided with a connecting shaft (2) and the upper end is provided with a fixing box (3). The fixing box (3) is provided with a matching fixing block (4). The two ends of the fixing block (4) are provided with symmetrical springs (5). One end of the spring (5) is provided with a fixing post (6). The two side walls of the fixing box (3) are provided with fixing holes. The fixing post (6) passes through the fixing hole and is slidably connected to it. The upper end of the fixing block (4) is provided with a telescopic component. The upper end of the telescopic component is provided with a flexible shaft body (7). The flexible shaft body (7) can be configured in different ways. The outer side of the connecting shaft (2) is provided with a fixing component.

2. The flexible shaft for use in electric drills according to claim 1, characterized in that: The telescopic assembly includes a fixed rod (8), a telescopic rod (9), and a screw (10). The fixed rod (8) is connected to the fixed block (4). The telescopic rod (9) passes through the fixed rod (8) and is slidably connected to it. The telescopic rod (9) is provided with multiple sets of limiting holes (11). The fixed rod (8) is provided with a sliding hole (12). The limiting hole (11) and the sliding hole (12) can coincide. The screw (10) passes through the limiting hole (11) and the sliding hole (12) and is threadedly connected to them.

3. A flexible shaft for use in electric drills according to claim 1, characterized in that: The fixing component includes a fixing ring (13), a screw (14) and a nut (15). The fixing ring (13) has screw holes at both ends. The screw (14) passes through the screw holes and is slidably connected to them. The nut (15) is adapted to the screw (14) and is threadedly connected.

4. A flexible shaft for use in electric drills according to claim 3, characterized in that: An auxiliary rod (16) is provided inside the spring (5), the auxiliary rod (16) passes through the spring (5), and the side wall of the fixing block (4) is provided with symmetrical auxiliary holes (19). The auxiliary rod (16) and the auxiliary holes (19) are connected in a damped sliding connection.

5. A flexible shaft for use in electric drills according to claim 1, characterized in that: The upper end of the fixed column (6) is provided with a handle (17), and the handle (17) is provided with anti-slip texture.

6. A flexible shaft for use in electric drills according to claim 4, characterized in that: A protective cover (18) is provided on the outside of the fixed post (6), and the protective cover (18) is threadedly connected to the fixed post (6).

7. A flexible shaft for use in electric drills according to claim 2, characterized in that: The outer wall of the telescopic rod (9) is provided with scale lines, which are evenly distributed along the axial direction of the telescopic rod (9).

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