Power switching mechanism

Abstract

The utility model relates to the technical field of aircraft manufacturing, in particular to a power switching mechanism. The power switching mechanism comprises a driving shaft, a driven shaft, a telescopic assembly, a universal switching assembly and a locking assembly, the input end of the driving shaft and the output end of the electric drill body are coaxially fixed, the output end of the driven shaft and the output end of the electric drill bit are coaxially fixed, and the telescopic assembly can stretch out and draw back in the axial direction of the telescopic assembly. The universal adapter assembly comprises two universal adapter connectors, any one of the two universal adapter connectors is connected with the output end of the driving shaft and one axial end of the telescopic assembly, the other universal adapter connector is connected with the input end of the driven shaft and the other axial end of the telescopic assembly, and the locking assembly is rotationally connected with the driving shaft and the driven shaft. The locking assembly is switched between the movable state and the fixed state, the locking assembly in the movable state freely adjusts the relative position of the driving shaft and the driven shaft, the locking assembly in the fixed state relatively fixes the driving shaft and the driven shaft, and various machining requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aircraft manufacturing, especially power switching mechanism. BACKGROUND

[0002] The aircraft parts are complex and various, and in the assembly process of many aircraft parts, drilling, reaming or grinding and other processing methods are needed.

[0003] In the prior art, tools such as electric drills or machine tools are needed for drilling, reaming or grinding. In actual processing, in order to ensure the normal operation and safety of drilling, reaming or grinding, it is necessary to ensure that the power output shaft of the electric drill or machine tool is coincident with the center axis of the hole to be processed. This requirement will result in the need for a larger processing space to be reserved at the hole to be processed when drilling, reaming or grinding. However, when drilling, reaming or grinding is needed at narrow locations such as stringers, window frames and grooves commonly used on some aircraft, the narrow locations such as stringers, window frames and grooves cannot provide sufficient processing space to meet the existing processing needs. It is necessary to change the drawings according to the existing processing technology, resulting in uncontrolled processing costs and prolonged processing cycle.

[0004] Therefore, it is urgent to invent a power switching mechanism to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a power switching mechanism to realize drilling, reaming or grinding of a hole to be processed at a narrow location or other complex location, and to meet the actual processing needs.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The power switching mechanism is used to switch the electric drill main body and the electric drill bit, and comprises:

[0008] The input end of the driving shaft is coaxially fixed with the output end of the electric drill main body;

[0009] The output end of the driven shaft is coaxially fixed with the output end of the electric drill bit;

[0010] The telescopic assembly can be telescoped along the axial direction of the telescopic assembly;

[0011] The universal switching assembly comprises two universal switching joints, any one of the two universal switching joints is connected with the output end of the driving shaft and one end of the axial direction of the telescopic assembly, and the other one is connected with the input end of the driven shaft and the other end of the axial direction of the telescopic assembly; and

[0012] A locking assembly is rotatably connected with the driving shaft and the driven shaft respectively, and is switchable between a movable state and a fixed state, the locking assembly in the movable state is capable of adjusting the relative position of the driving shaft and the driven shaft, and the locking assembly in the fixed state is capable of fixing the driving shaft and the driven shaft relative to each other.

[0013] As an option, the locking assembly comprises:

[0014] A first locking structure is rotatably connected with the driving shaft, and the connection position of the driving shaft relative to the first locking structure is adjustable along a preset direction;

[0015] A second locking structure is rotatably connected with the driven shaft, and the connection position of the driven shaft relative to the second locking structure is adjustable along the preset direction; and

[0016] A connecting rod, in the movable state of the locking assembly, the axial two ends of the connecting rod are rotatably connected with the first locking structure and the second locking structure respectively, and in the fixed state of the locking assembly, the axial two ends of the connecting rod are fixedly connected with the first locking structure and the second locking structure respectively.

[0017] As an option, the first locking structure comprises:

[0018] A first body, a sliding groove extending along the preset direction is formed in the first body, and through holes are arranged at the axial two ends of the first body along the driving shaft;

[0019] A sliding block is rotatably connected with the driving shaft, and the sliding block is slidingly arranged in the sliding groove;

[0020] A first locking piece, the first locking piece is capable of locking and fixing the sliding block and the first body; and

[0021] A second locking piece, one axial end of the connecting rod is rotatably connected with the first body around the axis of the connecting rod, and the second locking piece is capable of locking and fixing the connecting rod and the first body.

[0022] As an option, the first locking structure further comprises:

[0023] A first bearing is fixedly connected with the sliding block, and the first bearing is sleeved on the outer periphery of the driving shaft.

[0024] As an option, one end of the first body along the radial direction of the driving shaft is provided with a waist-shaped hole extending along the preset direction, and the first locking piece is capable of sliding along the waist-shaped hole.

[0025] As an option, the second locking structure comprises:

[0026] A second body, one end of the second body is rotationally connected with the driven shaft, and the other end of the second body, which is arranged opposite to the driven shaft, is rotationally connected with the connecting rod in the radial direction of the connecting rod.

[0027] As an option, the second locking structure is provided with a lighting lamp and / or a reflector at one end away from the first locking structure.

[0028] As an option, the telescopic assembly comprises:

[0029] A telescopic sleeve, an accommodating cavity extending in the axial direction is formed in the telescopic sleeve, one end of the telescopic sleeve is connected with any one of the two universal adapters, and the other end of the telescopic sleeve is provided with an opening communicated with the accommodating cavity; and

[0030] A telescopic rod, the other end of the telescopic rod is connected with the other one of the two universal adapters, the other end of the telescopic rod extends into the accommodating cavity along the opening, and the telescopic rod can move in the accommodating cavity in the axial direction of the accommodating cavity.

[0031] As an option, the inner wall of the telescopic sleeve is provided with an abutting groove extending in the axial direction, and the outer wall of the telescopic rod is provided with an abutting protrusion extending in the axial direction.

[0032] As an option, the universal adapter comprises:

[0033] Two yokes, the two yokes are respectively connected with the driving shaft and the telescopic assembly, or the two yokes are respectively connected with the driven shaft and the telescopic assembly; and

[0034] A cross shaft, the cross shaft is rotationally connected with the two yokes.

[0035] The utility model has the advantages of:

[0036] The power switching mechanism provided by the utility model, through respectively fixing the input end of the driving shaft and the output end of the electric drill main body coaxial center, fixing the output end of the driven shaft and the input end of the electric drill bit coaxial center, combining any one of the two universal switching joints in the universal switching assembly with the output end of the driving shaft and the axial one end of the telescopic assembly, the other one of the two with the output end of the driven shaft and the axial other end of the telescopic assembly, realizing the connection of the driving shaft, the universal switching joint, the telescopic assembly, the universal switching joint and the driven shaft in turn, under the movable state of the locking assembly, can adjust the relative position between the driving shaft and the driven shaft according to actual demand, and then adjust the relative position of the electric drill main body and the electric drill bit, satisfy the actual space demand of complex working conditions, under the fixed state of the locking assembly, can guarantee the relative fixation of the driving shaft and the driven shaft, realize the normal driving of the electric drill main body to the electric drill bit, carry out drilling, reaming or hole grinding under various narrow or complex working conditions, without changing the relevant structure of the product to be processed, can satisfy the processing demand of the product to be processed, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the first structure schematic view of the power switching mechanism provided by the utility model embodiment;

[0038] Figure 2 It is the second structure schematic view of the power switching mechanism provided by the utility model embodiment;

[0039] Figure 3 It is the third structure schematic view of the power switching mechanism provided by the utility model embodiment;

[0040] Figure 4 It is the structure schematic view of the locking assembly provided by the utility model embodiment;

[0041] Figure 5 It is the cross section schematic view of the locking assembly provided by the utility model embodiment;

[0042] Figure 6 It is the actual operation schematic view of the power switching mechanism provided by the utility model embodiment.

[0043] In the drawing:

[0044] 100, driving shaft;

[0045] 200, driven shaft;

[0046] 300, telescopic assembly; 310, telescopic sleeve; 320, telescopic rod; 321, butt joint protrusion;

[0047] 400, universal adapter assembly; 410, universal adapter joint; 411, universal joint; 412, yoke; 500, locking assembly; 510, first locking structure; 511, first body; 5111, sliding groove; 5112, accommodating hole; 5113, waist-shaped hole; 512, sliding block; 513, first bearing; 514, first locking piece; 515, second locking piece; 520, second locking structure; 521, second body; 522, third locking piece; 530, connecting rod;

[0048] 2000, electric drill body;

[0049] 3000, electric drill bit. DETAILED DESCRIPTION

[0050] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments.

[0051] In the description of the utility model, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] In the utility model, unless explicitly defined and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0054] Aircraft parts are complex and diverse, and in the assembly process of many aircraft parts, drilling, reaming or grinding and other processing methods are needed. In the prior art, electric drills or machine tools are needed to drill, ream or grind. In actual processing, in order to ensure the normal operation and safety of drilling, reaming or grinding, it is necessary to ensure that the power output shaft of the electric drill or machine tool coincides with the center axis of the hole to be processed. This requirement will result in the need to reserve a larger processing space at the hole to be processed when drilling, reaming or grinding. However, when drilling, reaming or grinding is needed in some narrow locations commonly used on aircraft, such as stringers, window frames, grooves, etc. The long and narrow location cannot provide enough processing space to meet the existing processing needs. The drawing needs to be changed according to the existing processing technology, resulting in uncontrolled processing costs and prolonged processing cycle.

[0055] To solve the above problems, as shown in Figures 1-6 The power transfer mechanism can transfer the electric drill body 2000 and the electric drill bit 3000. Specifically, the power transfer mechanism includes a driving shaft 100, a driven shaft 200, an extension assembly 300, a universal transfer assembly 400, and a locking assembly 500. The input end of the driving shaft 100 is coaxially fixed with the output end of the electric drill body 2000. The output end of the driven shaft 200 is coaxially fixed with the output end of the electric drill bit 3000. The extension assembly 300 can be extended and retracted along the axial direction of the extension assembly 300. The universal transfer assembly 400 includes two universal transfer joints 410. Any one of the two universal transfer joints 410 is connected with the output end of the driving shaft 100 and one end of the extension assembly 300 in the axial direction. The other one is connected with the input end of the driven shaft 200 and the other end of the extension assembly 300 in the axial direction. The locking assembly 500 is rotatably connected with the driving shaft 100 and the driven shaft 200, respectively. The locking assembly 500 can be switched between a movable state and a fixed state. The locking assembly 500 in the movable state can adjust the relative position of the driving shaft 100 and the driven shaft 200. The locking assembly 500 in the fixed state can relatively fix the driving shaft 100 and the driven shaft 200.

[0056] The power switching mechanism fixes the input end of the driving shaft 100 and the output end of the electric drill body 2000 coaxially, fixes the output end of the driven shaft 200 and the input end of the electric drill bit 3000 coaxially, connects any one of the two universal switching joints 410 in the universal switching assembly 400 with the output end of the driving shaft 100 and one axial end of the telescopic assembly 300, and connects the other one with the output end of the driven shaft 200 and the other axial end of the telescopic assembly 300, realizes the connection of the driving shaft 100, the universal switching joint 410, the telescopic assembly 300, the universal switching joint 410 and the driven shaft 200 in sequence, and adjusts the relative position between the driving shaft 100 and the driven shaft 200 according to actual needs when the locking assembly 500 is in a movable state, thereby adjusting the relative position of the electric drill body 2000 and the electric drill bit 3000, meeting the actual space requirements of complex working conditions. When the locking assembly 500 is in a fixed state, the driving shaft 100 and the driven shaft 200 can be fixed relative to each other to realize the normal driving of the electric drill body 2000 on the electric drill bit 3000, so as to drill, ream or mill holes in various narrow or complex working conditions without changing the related structure of the product to be processed, thereby improving the work efficiency.

[0057] It can be understood that the power switching mechanism provided by the embodiment is not only suitable for the electric drill body 2000 and the electric drill bit 3000, but also suitable for the lathe and the turning tool or other rotary driving structures and rotary execution structures. The embodiment is not limited in particular.

[0058] In addition, when assembling the driving shaft 100 and the electric drill body 2000 and assembling the driven shaft 200 and the electric drill bit 3000, a chuck and a threaded lock sleeve are needed to clamp and fix the electric drill body 2000 and the driving shaft 100 and the electric drill bit 3000 and the driven shaft 200, respectively.

[0059] As an optional solution, as shown in Figure 3 The universal switching joint 410 includes two knuckle joints 412 and a cross shaft 411, wherein the two knuckle joints 412 are connected with the driving shaft 100 and the telescopic assembly 300 respectively, or the two knuckle joints 412 are connected with the driven shaft 200 and the telescopic assembly 300 respectively, and the cross shaft 411 is rotatably connected with the two knuckle joints 412. By using two knuckle joints 412 connected with the cross shaft 411, and connecting the two knuckle joints 412 with the driving shaft 100 and the telescopic assembly 300 respectively or with the driven shaft 200 and the telescopic assembly 300 respectively, the universal rotary connection of the driving shaft 100 and the telescopic assembly 300 and the universal rotary connection of the driven shaft 200 and the telescopic assembly 300 are realized. It should be noted that the specific structure and working principle of the cross shaft 411 belong to the prior art, which will not be described here.

[0060] In an alternative embodiment, the telescopic assembly 300 comprises a telescopic sleeve 310 and a telescopic rod 320, wherein the telescopic sleeve 310 is provided with an accommodating cavity extending along the axial direction, one end of the telescopic sleeve 310 is connected with the yoke 412 of any one of the two universal adapter joints 410, the other end of the telescopic sleeve 310 is provided with an opening communicating with the accommodating cavity, one end of the telescopic rod 320 is connected with the yoke 412 of the other one of the two universal adapter joints 410, the other end of the telescopic rod 320 extends into the accommodating cavity along the opening, and the telescopic rod 320 is movable in the accommodating cavity along the axial direction. By arranging the telescopic assembly 300 as the telescopic sleeve 310 and the telescopic rod 320, connecting one end of the telescopic sleeve 310 with the yoke 412 of one of the two universal adapter joints 410, providing the other end of the telescopic sleeve 310 with an opening communicating with the accommodating cavity, connecting one end of the telescopic rod 320 with the yoke 412 of the other one of the two universal adapter joints 410, and extending the other end of the telescopic rod 320 into the accommodating cavity along the opening and being movable in the accommodating cavity along the axial direction, the telescopic assembly 300 can drive the driving shaft 100 and the driven shaft 200 to move along the axial direction of the accommodating cavity.

[0061] To prevent the telescopic rod 320 from rotating around the axial direction relative to the telescopic sleeve 310, the inner cavity wall of the telescopic sleeve 310 is provided with an abutting groove extending along the axial direction, and the outer peripheral wall of the telescopic rod 320 is provided with an abutting protrusion 321 extending along the axial direction.

[0062] To further improve the radial positioning effect of the telescopic sleeve 310 and the telescopic rod 320, the inner cavity wall of the telescopic sleeve 310 is provided with a plurality of abutting grooves spaced along the circumferential direction, the outer peripheral wall of the telescopic rod 320 is provided with a plurality of abutting protrusions 321 spaced along the circumferential direction, and each abutting groove is correspondingly provided with an abutting protrusion 321. It should be noted that in the present embodiment, the outer peripheral wall of the telescopic rod 320 is provided with six abutting protrusions 321 spaced along the circumferential direction at equal intervals, the inner cavity wall of the telescopic sleeve 310 is provided with six abutting grooves spaced along the circumferential direction at equal intervals, and each abutting protrusion 321 is correspondingly provided with an abutting groove. In other embodiments, the number of abutting protrusions 321 on the telescopic rod 320 and the number of abutting grooves in the telescopic sleeve 310 can be adjusted according to actual needs, and the present embodiment is not limited in this regard.

[0063] In addition, in other embodiments, the inner cavity wall of the telescopic sleeve 310 can be provided with an abutting protrusion 321 extending along the axial direction, and the outer peripheral wall of the telescopic rod 320 can be provided with an abutting groove extending along the axial direction. The inner cavity wall of the telescopic sleeve 310 can be provided with both an abutting groove and an abutting protrusion 321, and the outer peripheral wall of the telescopic rod 320 can be provided with both an abutting protrusion 321 and an abutting groove, and the present embodiment is not limited in this regard.

[0064] In combination with Figure 4 andFigure 5 The specific structure of the locking assembly 500 is described. The locking assembly 500 comprises a first locking structure 510, a second locking structure 520, and a connecting rod 530, wherein the first locking structure 510 is rotationally connected with the driving shaft 100, and the connection position of the driving shaft 100 relative to the first locking structure 510 is adjustable along a preset direction, the second locking structure 520 is rotationally connected with the driven shaft 200, and the connection position of the driven shaft 200 relative to the second locking structure 520 is adjustable along the preset direction, in the movable state of the locking assembly 500, the axial two ends of the connecting rod 530 are respectively rotationally connected with the first locking structure 510 and the second locking structure 520, and in the fixed state of the locking assembly 500, the axial two ends of the connecting rod 530 are respectively fixedly connected with the first locking structure 510 and the second locking structure 520. By rotationally connecting the first locking structure 510 with the driving shaft 100 and rotationally connecting the second locking structure 520 with the driven shaft 200, and adjusting the connection position of the driving shaft 100 relative to the first locking structure 510 along the preset direction and the connection position of the second locking structure 520 relative to the driven shaft 200 along the preset direction, and rotationally connecting or fixedly connecting the connecting rod 530 with the first locking structure 510 and the second locking structure 520 respectively, the locking assembly 500 can be switched between the movable state and the fixed state.

[0065] It should be noted that in the embodiment, the preset direction is the left-right direction. In other embodiments, the specific direction of the preset direction can be adjusted according to actual needs, and the embodiment is not limited specifically.

[0066] In addition, in the actual operation process, the worker can hold the fixed electric drill body 2000 with one hand and hold the fixed connecting rod 530 with the other hand, so as to further improve the docking accuracy of the electric drill body 2000 and the position to be processed, and improve the processing accuracy of subsequent drilling, reaming or hole grinding.

[0067] Specifically, the first locking structure 510 includes a first body 511, a sliding block 512, a first locking member 514, and a second locking member 515. The first body 511 has a sliding groove 5111 extending in a preset direction. The sliding groove 5111 has through holes at both ends along the axial direction of the drive shaft 100. The sliding block 512 is rotatably connected to the drive shaft 100 and is slidably disposed in the sliding groove 5111. The first locking member 514 can lock and fix the sliding block 512 to the first body 511. One axial end of the connecting rod 530 is rotatably connected to the first body 511 around the axial direction of the connecting rod 530. The second locking member 515 can lock and fix the connecting rod 530 to the first body 511. By providing a sliding groove 5111 extending in a preset direction within the first body 511, and through holes at both ends of the sliding groove 5111 along the axial direction of the drive shaft 100, and by providing a sliding block 512 within the sliding groove 5111, the drive shaft 100 is rotatably connected to the sliding block 512, thereby achieving the effect of the drive shaft 100 moving arbitrarily within the sliding groove 5111 without interference between the drive shaft 100 and the first body 511. By using a first locking member 514 to lock the sliding block 512 to the first body 511, and by using a second locking member 515 to lock the first body 511 to the connecting rod 530, the first body 511 and the connecting rod 530 can be switched from a movable state to a fixed state.

[0068] In this embodiment, the first body 511 has a waist-shaped hole 5113 extending in a preset direction at one end of the radial direction of the drive shaft 100. The first locking member 514 can slide along the waist-shaped hole 5113 so that no matter where the drive shaft 100 moves relative to the first body 511 in the sliding groove 5111 in the preset direction, the first locking member 514 can lock and fix the sliding block 512 to the first body 511. It should be noted that in this embodiment, the first locking member 514 is a bolt, and the end of the sliding block 512 near the waist-shaped hole 5113 has a threaded hole, and the bolt is threadedly engaged with the threaded hole.

[0069] like Figure 4 and Figure 5 As shown, the first body 511 has a receiving hole 5112 extending axially along the connecting rod 530 and a locking hole extending radially along the connecting rod 530. The locking hole communicates with the receiving hole 5112, and one axial end of the connecting rod 530 is located in the receiving hole 5112. The second locking member 515 can lock and fix the connecting rod 530 to the first body 511 along the locking hole. It should be noted that in this embodiment, the second locking member 515 is a bolt, the locking hole is a threaded hole, and the bolt and the threaded hole are threadedly engaged.

[0070] To further improve the protection of the driving shaft 100 and the sliding block 512, the first locking structure 510 further comprises a first bearing 513, the first bearing 513 is fixedly connected with the sliding block 512, and the first bearing 513 is sleeved on the outer periphery of the driving shaft 100. By fixing the first bearing 513 at the sliding block 512 and sleeving the first bearing 513 on the outer periphery of the driving shaft 100, the friction between the driving shaft 100 and the sliding block 512 can be greatly reduced, which not only improves the protection of the driving shaft 100 and the sliding block 512, but also ensures the transmission effect of the electric drill main body 2000 on the driving shaft 100 and improves the transmission efficiency of the power switching mechanism.

[0071] The second locking structure 520 comprises a second main body 521, one end of the second main body 521 is rotationally connected with the driven shaft 200, and the other end of the second main body 521 opposite to the driven shaft 200 is rotationally connected with the connecting rod 530 in the radial direction of the connecting rod 530.

[0072] In the embodiment, to simplify the structure of the power switching mechanism, the second locking structure 520 only comprises the second main body 521 and a second bearing, the second bearing is clamped between the second main body 521 and the driven shaft 200, and the driven shaft 200 cannot move relative to the second main body 521 in the preset direction. By adjusting the relative position of the driving shaft 100 and the first main body 511 in the preset direction, combining with adjusting the rotation angle of the connecting rod 530 and the first main body 511 in the axial direction of the connecting rod 530 and adjusting the rotation angle of the second main body 521 and the connecting rod 530 in the radial direction of the connecting rod 530, the actual position adjustment requirement can be met.

[0073] In addition, the connecting rod 530 and the second main body 521 are locked and fixed by a third locking piece 522, the specific structure of the third locking piece 522 is the same as that of the first locking piece 514, and details are not repeated here.

[0074] In actual operation, the operation environment can be relatively dark or the light cannot directly irradiate the position to be processed. In order to facilitate the worker to observe the processing state of the position to be processed, the second body 521 of the second locking structure 520 is provided with a lighting lamp and / or a reflector at the end away from the first locking structure 510. By providing the lighting lamp and / or the reflector at the end of the second body 521 away from the first body 511, in actual operation, the light emitted by the lighting lamp can irradiate the position to be processed or the light reflected by the reflector can irradiate the position to be processed, so as to facilitate the worker to observe the position to be processed in real time. It should be noted that in the embodiment, the end of the second body 521 away from the first body 511 is provided with the lighting lamp and the reflector at the same time, and the lighting lamp and the reflector are arranged side by side on the end surface of the second body 521 away from the first body 511. In other embodiments, only the lighting lamp or only the reflector can be arranged on the end surface of the second body 521 away from the first body 511 according to actual needs, and the embodiment is not limited in particular.

[0075] In order to further facilitate understanding of the power switching structure provided in the embodiment, the power switching structure will be described in combination with the power switching structure and the electric drill main body 2000 and the electric drill bit 3000. Figures 1-6 The specific assembly steps of the power switching structure and the electric drill main body 2000 and the electric drill bit 3000 will be described.

[0076] 1) The driving shaft 100 and the electric drill main body 2000 are clamped and fixed by using the chuck and the threaded lock sleeve respectively, and the driven shaft 200 and the electric drill bit 3000 are clamped and fixed by using the chuck and the threaded lock sleeve respectively;

[0077] 2) The relative position of the electric drill bit 3000 and the position to be processed is adjusted, and the central axis of the electric drill bit 3000 is coincided with the axis of the position to be processed;

[0078] 3) The extension length of the telescopic sleeve 310 and the telescopic rod 320 is adjusted, the rotation angle of the two universal adapter joints 410 is adjusted, the position of the sliding block 512 in the sliding groove 5111 is adjusted, the rotation angle of the connecting rod 530 relative to the first body 511 is adjusted, and the rotation angle of the connecting rod 530 relative to the second body 521 is adjusted, so that the electric drill main body 2000 is in a position convenient for the worker to hold, and the worker can easily hold the connecting rod 530;

[0079] 4) The first body 511 and the sliding block 512 are locked by using the first locking piece 514, the first body 511 and the connecting rod 530 are locked by using the second locking piece 515, and the second body 521 and the connecting rod 530 are locked by using the third locking piece 522, so that the locking assembly 500 is switched from the movable state to the fixed state;

[0080] 5) The electric drill main body 2000 is started to drill, ream or mill the position to be processed.

[0081] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A power transfer mechanism for transferring the electric drill body (2000) and the electric drill bit (3000), characterized in that, The power switching mechanism comprises: a driving shaft (100), an input end of which is coaxially fixed with an output end of the electric drill body (2000); a driven shaft (200), an output end of which is coaxially fixed with an output end of the electric drill bit (3000); a telescopic assembly (300), which is capable of telescoping along an axial direction thereof; a universal switching assembly (400), which comprises two universal switching joints (410), any one of which is connected with an output end of the driving shaft (100) and one axial end of the telescopic assembly (300), and the other of which is connected with an input end of the driven shaft (200) and the other axial end of the telescopic assembly (300); and a locking assembly (500), which is rotatably connected with the driving shaft (100) and the driven shaft (200) respectively, and is capable of switching between a movable state and a fixed state, the locking assembly (500) in the movable state being capable of adjusting the relative position of the driving shaft (100) and the driven shaft (200) arbitrarily, and the locking assembly (500) in the fixed state being capable of fixing the driving shaft (100) and the driven shaft (200) relatively.

2. The power transfer mechanism of claim 1, wherein, The locking assembly (500) comprises: a first locking structure (510), which is rotatably connected with the driving shaft (100), and the connection position of the driving shaft (100) relative to the first locking structure (510) is adjustable along a preset direction; a second locking structure (520), which is rotatably connected with the driven shaft (200), and the connection position of the driven shaft (200) relative to the second locking structure (520) is adjustable along the preset direction; and a connecting rod (530), axial two ends of which are rotatably connected with the first locking structure (510) and the second locking structure (520) respectively when the locking assembly (500) is in the movable state, and axial two ends of which are fixedly connected with the first locking structure (510) and the second locking structure (520) respectively when the locking assembly (500) is in the fixed state.

3. The power transfer mechanism of claim 2, wherein, The first locking structure (510) comprises: a first body (511), in which a sliding groove (5111) extending along the preset direction is formed, and through holes are arranged at axial two ends of the driving shaft (100); a sliding block (512), which is rotatably connected with the driving shaft (100) and is slidingly arranged in the sliding groove (5111); a first locking piece (514), which is capable of locking and fixing the sliding block (512) and the first body (511); and A second locking member (515) is arranged at an axial end of the connecting rod (530) and is rotatably connected to the first body (511) along an axial direction of the connecting rod (530), and the second locking member (515) is configured to lock and fix the connecting rod (530) and the first body (511).

4. The power transfer mechanism of claim 3, wherein, The first locking structure (510) further comprises: A first bearing (513) is fixedly connected to the sliding block (512), and the first bearing (513) is sleeved on an outer periphery of the driving shaft (100).

5. The power transfer mechanism of claim 3, wherein, The first body (511) is provided with a waist-shaped hole (5113) extending along the preset direction at an end of the first body (511) along a radial direction of the driving shaft (100), and the first locking member (514) is configured to slide along the waist-shaped hole (5113).

6. The power transfer mechanism of claim 2, wherein, The second locking structure (520) comprises: A second body (521) is rotatably connected to the driven shaft (200) at one end of the second body (521), and the other end of the second body (521) opposite to the driven shaft (200) is rotatably connected to the connecting rod (530) along a radial direction of the connecting rod (530).

7. The power transfer mechanism of claim 2, wherein, The second locking structure (520) is provided with a lighting lamp and / or a reflector at an end of the second locking structure (520) away from the first locking structure (510).

8. The power transfer mechanism of claim 1, wherein, The telescopic assembly (300) comprises: A telescopic sleeve (310) is internally provided with an accommodating cavity extending along an axial direction, one end of the telescopic sleeve (310) is connected to any one of the two universal adapter joints (410), and the other end of the telescopic sleeve (310) is provided with an opening in communication with the accommodating cavity; and A telescopic rod (320) is connected to the other one of the two universal adapter joints (410) at one end of the telescopic rod (320), the other end of the telescopic rod (320) extends into the accommodating cavity along the opening, and the telescopic rod (320) is configured to move in the accommodating cavity along an axial direction of the accommodating cavity.

9. The power transfer mechanism of claim 8, wherein, An abutting groove extending along an axial direction is arranged on a cavity wall of the telescopic sleeve (310), and an abutting protrusion (321) extending along an axial direction is arranged on an outer peripheral wall of the telescopic rod (320).

10. The power transfer mechanism of claim 1, wherein, The universal adapter joint (410) comprises: Two yokes (412) are respectively connected to the driving shaft (100) and the telescopic assembly (300), or the two yokes (412) are respectively connected to the driven shaft (200) and the telescopic assembly (300); and A cross shaft (411) is rotatably connected to the two yokes (412).

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