Electronic stepless speed regulating bench drill with convenient speed regulation

Abstract

The application discloses a kind of electronic stepless speed regulation bench drill of speed regulation convenient in bench drill technical field, including, base, stand, drill head frame, cover plate, motor and drill chuck;The drill head frame is provided with speed regulation knob and rotational speed index, and rotational speed index is located at the outside of speed regulation knob, and the indicating rod is arranged on the speed regulation knob;Positioning assembly is arranged on the drill head frame;The positioning assembly includes guide device, and the rotating device is arranged on the guide device and contacted with the indicating rod;Fixed device is arranged on the guide device, and the limiting block is arranged in the sliding slot on the positioning rod and slides, when rotating adjusting screw adjusts the position of indicating rod by positioning rod, only need to make the limiting block unable to move in the sliding slot, so that the position of positioning rod after adjustment can meet the needs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bench drill, in particular to a kind of electronic infinitely variable speed bench drill of speed regulation is convenient. BACKGROUND

[0002] The existing electronic infinitely variable speed bench drill when adjusting the speed of drill bit, generally adopt rotating speed regulation knob, make it rotate to the required speed index, such as authorized disclosure No.CN2071992 disclosed electronic infinitely variable speed bench drill, its electronic infinitely variable speed bench drill is composed of drill chuck, drill head, motor, stand, base and electronic circuit.Electronic speed regulation knob is arranged on the side or top cover of drill head, the drill can be directly controlled by the rotation of the knob switch Speed of drill bit, easy to operate, it is beneficial to improve processing efficiency.

[0003] But applicant finds that it needs to be slowly rotated each time, otherwise it is easy to appear to rotate too much situation, speed regulation is not convenient enough, for this, we propose a kind of electronic infinitely variable speed bench drill of speed regulation is convenient. SUMMARY

[0004] The present application aims to provide a kind of electronic infinitely variable speed bench drill of speed regulation is convenient, to solve the problems raised in the background art.

[0005] To achieve the above object, the present application provides the following technical scheme: a kind of electronic infinitely variable speed bench drill of speed regulation is convenient, including, base, stand, drill head, cover, motor and drill chuck;

[0006] The drill head is provided with speed regulation knob and speed index, and the speed index is located on the outside of speed regulation knob, the speed regulation knob is provided with indicating rod;

[0007] The drill head is provided with positioning assembly;

[0008] The positioning assembly includes guide device, the guide device is provided with rotating device in contact with indicating rod;

[0009] The guide device is provided with fixing device, and the fixing device is used to fix rotating device.

[0010] As a preferred scheme of the present application, wherein: the guide device includes two groups of identical fixed blocks, both sides fixed blocks are fixedly connected with arc-shaped plate, the arc-shaped plate is same as the center of speed regulation knob, both sides fixed blocks are fixed on drill head.

[0011] As a kind of preferred scheme of the electronic stepless speed regulation bench drill of the present application, wherein: the rotating device includes rotating block, rotating block is rotatably connected on arc plate, the tip opposite to indicating rod is arranged on rotating block, the both sides of rotating block are slidably connected with positioning rod, the tip is located on the outside of rotating speed index.

[0012] As a kind of preferred scheme of the electronic stepless speed regulation bench drill of the present application, wherein: the both sides of rotating block are slidably connected with limiting block in the sliding slot, the both sides of limiting block are connected with the both sides of positioning rod, the both sides of positioning rod are rotatably connected with adjusting screw through bearing, and adjusting screw extends to the outside of rotating block.

[0013] As a kind of preferred scheme of the electronic stepless speed regulation bench drill of the present application, wherein: when right positioning rod contacts with indicating rod, right limiting block contacts with the bottom inner wall of right sliding slot, when left positioning rod contacts with indicating rod, left limiting block contacts with the bottom inner wall of left sliding slot.

[0014] As a kind of preferred scheme of the electronic stepless speed regulation bench drill of the present application, wherein: the fixing device includes two groups of micro electric telescopic rods with same structure, the both sides of micro electric telescopic rod are arranged on the both sides of fixed block, the output end of micro electric telescopic rod is provided with mounting rod, the both sides of mounting rod are provided with supporting rod, the both sides of supporting rod are connected with pressing rod, and the back side of pressing rod contacts with rotating block.

[0015] As a kind of preferred scheme of the electronic stepless speed regulation bench drill of the present application, wherein: the drill head frame is provided with switch electrically connected with the both sides of micro electric telescopic rod.

[0016] As a kind of preferred scheme of the electronic stepless speed regulation bench drill of the present application, wherein: the both sides of rotating block are connected with rotating rod, and rotating rod and pressing rod are arc structure, and rotating rod and pressing rod are communicated with the center of speed regulation knob, the front side of rotating rod contacts with pressing rod, and rotating rod penetrates through the both sides of fixed block.

[0017] Compared with prior art, the present application has the following beneficial effects:

[0018] 1. Untighten the rotating block and rotating rod by fixing the device. Then, adjust the positioning rods on both sides to extend or retract as needed to speed up or slow down. After adjusting the positioning rods, rotate the rotating rod directly until the rotating block drives the tip to align with the speed index to be adjusted. At this point, tighten the rotating block and rotating rod by fixing the device again. Finally, rotate the speed adjustment knob until the indicator rod and positioning rod are limited and cannot be rotated. At this point, the indicator rod is exactly aligned with the speed index to be adjusted. Therefore, each time the speed is adjusted, it is not necessary to slowly rotate the speed adjustment knob. Just rotate the speed adjustment knob until it can no longer be rotated to reach the speed index to be adjusted, avoiding the situation of often over-rotating.

[0019] 2. By setting a limiting block that slides in the groove on the positioning rod, when the adjusting screw is rotated to adjust the positioning rod to limit the indicator rod, it is only necessary to prevent the limiting block from moving in the groove so that the position of the positioning rod after adjustment meets the requirements. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an electronic continuously variable speed drilling machine with convenient speed adjustment according to the present invention.

[0021] Figure 2 This is a schematic diagram of the positioning component structure of the electronic continuously variable speed drill press of the present invention, which is convenient for speed adjustment.

[0022] Figure 3 This is a cross-sectional schematic diagram of the rotating device structure of the electronic continuously variable speed drilling machine according to the present invention.

[0023] Figure 4 This is an enlarged schematic diagram of the fixing device structure of the electronic stepless speed regulating bench drill of the present invention.

[0024] In the diagram: 1. Base; 2. Column; 3. Drill bit holder; 4. Cover plate; 5. Motor; 6. Drill chuck; 7. Speed ​​control knob; 8. Speed ​​index; 9. Indicator rod; 10. Fixing block; 11. Arc plate; 12. Rotating block; 13. Tip; 14. Positioning rod; 15. Rotating rod; 16. Adjusting screw; 17. Limit block; 18. Switch; 19. Pressure rod; 20. Miniature electric telescopic rod; 21. Mounting rod; 22. Support rod. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] As mentioned in the background, the prior art needs to be slowly rotated every time the speed is adjusted, otherwise it is often easy to rotate too much, and the speed is not convenient and fast. The present application provides a speed-adjustable electronic stepless speed-adjustable bench drill.

[0027] Embodiment 1

[0028] Reference Figures 1 to 4 A speed-adjustable electronic stepless speed-adjustable bench drill, comprising a base 1, a stand 2, a drill head holder 3, a cover plate 4, a motor 5 and a drill chuck 6.

[0029] The drill head holder 3 is provided with a speed-adjusting knob 7 and a rotating speed index 8, and the rotating speed index 8 is located outside the speed-adjusting knob 7. The speed-adjusting knob 7 is provided with an indicating rod 9. When the indicating rod 9 is aligned with the rotating speed index 8 to be adjusted, the speed-adjusting knob 7 is rotated into place.

[0030] The drill head holder 3 is provided with a positioning assembly.

[0031] The positioning assembly comprises a guide device, and the guide device is provided with a rotating device in contact with the indicating rod 9. The rotating device is used to limit the indicating rod 9, so that when the speed-adjusting knob 7 is found to be rotating, the speed-adjusting knob 7 is rotated into place.

[0032] The guide device is provided with a fixing device, and the fixing device is used to fix the rotating device.

[0033] The guide device comprises two groups of fixed blocks 10 which are the same structure. Both sides of the fixed blocks 10 are fixedly connected with arc-shaped plates 11, and the arc-shaped plates 11 are the same as the center of the speed-adjusting knob 7. Both sides of the fixed blocks 10 are fixed on the drill head holder 3, and the arc-shaped plates 11 are used to guide the rotating blocks 12.

[0034] The rotating device comprises a rotating block 12 which is rotatably connected to the arc-shaped plate 11. The rotating block 12 is provided with a sharp end 13 opposite to the indicating rod 9, so as to adjust the position of the rotating block 12. Both sides of the rotating block 12 are slidably connected with positioning rods 14, and the sharp end 13 is located outside the rotating speed index 8, so that the sharp end 13 does not block the rotating speed index 8.

[0035] Both sides of the rotating block 12 are provided with sliding grooves, and both sides of the sliding grooves are slidably connected with limiting blocks 17. Both sides of the limiting blocks 17 are connected with the positioning rods 14, and both sides of the positioning rods 14 are rotatably connected with adjusting screws 16 through bearings, and the adjusting screws 16 extend to the outside of the rotating block 12. By rotating the adjusting screws 16, the positioning rods 14 can move vertically.

[0036] When the right positioning rod 14 is in contact with the indicating rod 9, the right limiting block 17 is in contact with the bottom inner wall of the right sliding groove, and when the left positioning rod 14 is in contact with the indicating rod 9, the left limiting block 17 is in contact with the bottom inner wall of the left sliding groove, so that the limiting block 17 arranged on the positioning rod 14 and sliding in the sliding groove is arranged, and when the positioning rod 14 is used to limit the indicating rod 9 by rotating the adjusting screw rod 16, the limiting block 17 is only required to be unable to move in the sliding groove, and the adjusting screw rod 16 does not need to be rotated any more, and at this time, the position of the positioning rod 14 can meet the needs of subsequent limiting of the indicating rod 9.

[0037] The fixing device comprises two groups of micro electric telescopic rods 20 which are identical in structure, the micro electric telescopic rods 20 are arranged on the two fixing blocks 10 respectively, the output ends of the micro electric telescopic rods 20 are provided with mounting rods 21, the mounting rods 21 are provided with supporting rods 22, the supporting rods 22 are connected with the pressing rods 19, the rear side of the pressing rod 19 is in contact with the rotating block 12, and the micro electric telescopic rod 20 drives the mounting rod 21 to move, so that the supporting rod 22 drives the pressing rod 19 to move in the front-rear direction, and the rotating block 12 can be fixed no matter where it rotates on the arc-shaped plate 11.

[0038] In order to facilitate the work of the micro electric telescopic rod 20, the switch 18 which is electrically connected with the micro electric telescopic rods 20 is arranged on the drill bit holder 3.

[0039] Embodiment 2

[0040] Refer to Figures 1 to 4 The two sides of the rotating block 12 are connected with the rotating rods 15, so that when the rotating block 12 rotates, the rotating rod 15 rotates with the rotating block 12, the rotating rod 15 and the pressing rod 19 are in arc-shaped structures, the rotating rod 15 and the pressing rod 19 are in communication with the center of the speed regulating knob 7, the front side of the rotating rod 15 is aligned with the rotating block 12, the front side of the rotating rod 15 is in contact with the pressing rod 19, and the rotating rod 15 penetrates through the two fixing blocks 10, so that the user only needs to rotate the rotating rod 15 to drive the rotating block 12 to adjust the position, which is more convenient.

[0041] The remaining structures are the same as those in Embodiment 1.

[0042] Working principle: when the speed regulating knob 7 needs to be rotated to adjust the speed of the drill bit, the switch 18 is operated first, so that the micro electric telescopic rod 20 drives the mounting rod 21 to move forward, the supporting rod 22 drives the pressing rod 19 to move forward, and the pressing of the rotating block 12 and the rotating rod 15 is cancelled.

[0043] Then, the positioning rod 14 is adjusted according to whether it needs to be adjusted to be faster or slower, for example, Figure 2If the speed needs to be increased, the right positioning rod 14 does not need to be moved, and the rotating rod 15 is directly rotated until the rotating block 12 drives the tip 13 to align with the speed index 8 to be adjusted, and then the rotating block 12 and the rotating rod 15 are pressed tightly by the pressing rod 19;

[0044] Finally, the speed regulating knob 7 is directly rotated until the indicating rod 9 cannot be rotated in contact with the right positioning rod 14, at which time the indicating rod 9 is aligned with the speed index 8 to be adjusted;

[0045] As Figure 2 If the speed needs to be decreased, the right positioning rod 14 is moved upward until the rotation of the indicating rod 9 is not blocked, and the left positioning rod 14 is moved downward. When the rotating adjusting screw 16 is rotated to move the positioning rod 14 downward, the rotating adjusting screw 16 is stopped when the limiting block 17 contacts the inner wall of the bottom of the sliding groove. At this time, the position of the downward movement of the positioning rod 14 can meet the needs, and then the rotating rod 15 is directly rotated until the rotating block 12 drives the tip 13 to align with the speed index 8 to be adjusted, and then the rotating block 12 and the rotating rod 15 are pressed tightly by the pressing rod 19;

[0046] Finally, the speed regulating knob 7 is directly rotated until the indicating rod 9 cannot be rotated in contact with the left positioning rod 14, at which time the indicating rod 9 is aligned with the speed index 8 to be adjusted;

[0047] Therefore, the speed regulating knob 7 does not need to be slowly rotated each time the speed is adjusted, and the speed regulating knob 7 is directly rotated until it cannot be rotated, that is, the speed index 8 to be adjusted can be rotated, so that the situation that the speed is often rotated too much is avoided.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A convenient electronically stepless speed-regulating bench drill, characterized in that: include, Base (1), column (2), drill bit holder (3), cover plate (4), motor (5) and drill chuck (6); The drill bit holder (3) is provided with a speed control knob (7) and a speed index (8), and the speed index (8) is located outside the speed control knob (7). The speed control knob (7) is provided with an indicator rod (9). The drill bit holder (3) is equipped with a positioning component; The positioning component includes a guide device, on which a rotating device is provided that contacts the indicator rod (9); The guide device is equipped with a fixing device, which is used to fix the rotating device. The guiding device includes two sets of fixed blocks (10) with the same structure. Both fixed blocks (10) are fixedly connected to the arc plate (11). The arc plate (11) has the same center as the speed control knob (7). Both fixed blocks (10) are fixed on the drill bit frame (3). The rotating device includes a rotating block (12), which is rotatably connected to the arc plate (11). The rotating block (12) is provided with a tip (13) opposite to the indicator rod (9). Positioning rods (14) are slidably connected to both sides of the rotating block (12). The tip (13) is located outside the speed index (8). The fixing device includes two sets of miniature electric telescopic rods (20) with the same structure. The miniature electric telescopic rods (20) on both sides are respectively set on the fixing blocks (10) on both sides. The output end of the miniature electric telescopic rods (20) on both sides is provided with mounting rods (21). Support rods (22) are provided on the mounting rods (21) on both sides. The support rods (22) on both sides are connected to the pressure rod (19), and the rear side of the pressure rod (19) is in contact with the rotating block (12). Both sides of the rotating block (12) are connected to the rotating rod (15), and both the rotating rod (15) and the pressure rod (19) are arc-shaped. Both the rotating rod (15) and the pressure rod (19) are connected to the center of the speed control knob (7). The front side of the rotating rod (15) is in contact with the pressure rod (19), and the rotating rod (15) passes through the two fixed blocks (10).

2. The electronically continuously variable speed drilling machine with convenient speed adjustment according to claim 1, characterized in that: The rotating block (12) has sliding grooves on both sides inside, and limit blocks (17) are slidably connected in both sliding grooves. The limit blocks (17) on both sides are connected to the positioning rods (14) on both sides respectively. The positioning rods (14) on both sides are rotatably connected to the adjusting screws (16) through bearings, and the adjusting screws (16) extend to the outside of the rotating block (12).

3. The electronically continuously variable speed drilling machine with convenient speed adjustment according to claim 2, characterized in that: When the right positioning rod (14) contacts the indicator rod (9), the right limiting block (17) contacts the bottom inner wall of the right slide groove. When the left positioning rod (14) contacts the indicator rod (9), the left limiting block (17) contacts the bottom inner wall of the left slide groove.

4. The electronically controlled stepless speed-regulating bench drill according to claim 1, characterized in that: The drill bit holder (3) is equipped with a switch (18) that is electrically connected to the two miniature electric telescopic rods (20).

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