Electric drill capable of quickly replacing drill bit and having depth control function

Abstract

The utility model relates to the technical field of electric drills, and discloses an electric drill capable of quickly replacing a drill bit and having depth control, which comprises a mounting seat, a positioning cover is arranged on the left side of the mounting seat, the drill bit is arranged on the left side of the positioning cover, and positioning plates are fixedly connected to the periphery of the left side of the mounting seat. A conical fluted disc is rotationally connected to the middle of the inner wall of the positioning cover, conical gears are rotationally connected to the periphery of the inner wall of the positioning cover, the conical gears are in meshed connection with the conical fluted disc, and first threaded rods are fixedly connected to the outer sides of the conical gears. According to the utility model, the mounting seat is fixed on the electric drill, the second threaded rod is rotated, the rack drives the gear and the conical fluted disc to rotate and drives the conical gear and the first threaded rod to rotate through threaded transmission, and the first threaded rod drives the movable frame to move and be clamped with the positioning plate, so that the positioning cover and the drill bit on the positioning cover are fixed with the mounting seat; and the drill bit can be quickly disassembled and fixed by rotating the second threaded rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric drill technical field especially, relates to quick replacement drill bit and have depth control's electric drill. BACKGROUND

[0002] Electric drill is a kind of practical electric tool, its main function is in the drilling operation to a variety of materials, with internal motor operation power generation, through gear transmission device transmission to chuck and utilize chuck firm drill bit, after connecting power supply, drill bit will high-speed rotation and carry out drilling to material, for the convenience of replacing and adjusting drill bit, need to use a kind of quick replacement drill bit and have depth control's electric drill.

[0003] Quick replacement drill bit and have depth control's electric drill is a kind of electric tool in drilling operation, it is very convenient and accurate, can let user easily remove old drill bit and install new drill bit in short time, need not rely on additional tool, and rely on adjustable depth limit rod, accurately set drilling depth according to actual demand, when electric drill works to set depth, limit rod will play a role and prevent it from continuing to penetrate.

[0004] The electric drill on the market currently replaces drill bit by screwing the screw on it and the thread, this kind of fixing prevents the drill bit from falling off when rotating, so that the drill bit can only rotate in a single direction, and when disassembling, it also needs to screw multiple corresponding screws for disassembly, the disassembly steps are more cumbersome and limit the use of drill, thereby reducing the practicability of the device. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides quick replacement drill bit and have depth control's electric drill, aims at improving the problem that drill bit replacement is more cumbersome and installation mode limits drill bit direction in prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: the electric drill of quick replacement drill bit and with depth control, including mounting seat, the left side of mounting seat is provided with the locating cover, the left side of locating cover is provided with drill bit, the left side of mounting seat is all fixedly connected with the positioning plate around, the inner wall middle part of locating cover is rotatably connected with the conical toothed disc, the inner wall all rotatably connected with the conical gear of locating cover around, the conical gear is connected with the conical toothed disc meshing, the outside fixed connection of conical gear has first screw rod, the outside screw connection of first screw rod has moving frame, the outside of moving frame penetrates locating cover and is clamped with positioning plate, the right side fixed connection of conical toothed disc has gear, the inner wall rear side of locating cover is rotatably connected with second screw rod, the outside screw connection of second screw rod has rack, the rack is connected with the gear meshing, the outside of locating cover is provided with depth mechanism, and the depth mechanism is used for adjusting the drilling depth.

[0007] As further description of the above technical solution:

[0008] The depth mechanism includes an installation plate, the installation plate is fixedly connected to the outside of the locating cover, a bidirectional threaded rod is rotatably connected to the inner wall middle part of the installation plate, moving plates are screw-connected to the upper and lower sides of the outer wall of the bidirectional threaded rod, the moving plates are fixedly connected to U-shaped blocks which penetrate the installation plate from the outside, the U-shaped blocks are rotatably connected to telescopic plates from the inside, the telescopic plates are rotatably connected to positioning rings from the outside, the positioning rings are rotatably connected to push plates from the top, and the installation plate is fixedly connected to the drill bit from the outer wall middle part.

[0009] As further description of the above technical solution:

[0010] The outer wall of the mounting seat is fixedly connected with positioning blocks around, and positioning holes are formed in the outer sides of the positioning blocks.

[0011] As further description of the above technical solution:

[0012] A knob is rotatably connected to the top of the locating cover, and the bottom of the knob penetrates the locating cover and is fixedly connected to the second threaded rod.

[0013] As further description of the above technical solution:

[0014] A handle is rotatably connected to the top of the installation plate, and the bottom of the handle penetrates the installation plate and is fixedly connected to the bidirectional threaded rod.

[0015] As further description of the above technical solution:

[0016] Sliding grooves are formed in the inner wall front and back sides of the installation plate, and the sliding grooves are slidingly connected to the U-shaped blocks.

[0017] As a further description of the above technical solutions:

[0018] The left end of the mounting plate is fixedly connected with a bracket on the upper side and the lower side, and the outer side of the bracket is fixedly connected with the drill bit.

[0019] As a further description of the above technical solutions:

[0020] The outer side of the push plate is rotatably connected with a rotating ring, and the outer side of the rotating ring is fixedly connected with a soft pad.

[0021] The utility model has the advantages of the following:

[0022] 1. In the utility model, the mounting seat is fixed to the electric drill, then the second threaded rod is rotated to move the rack through threaded connection, and the rack and the bevel gear are rotated through meshing transmission, the bevel gear and the first threaded rod are rotated, the moving frame is moved along with the rotation of the first threaded rod, the positioning cover and the positioning plate are clamped, and the positioning cover and the drill bit thereon are clamped and fixed with the mounting seat, so that the drill bit can be quickly disassembled and assembled by rotating the second threaded rod, and the practicability of the device is improved.

[0023] 2. In the utility model, the bidirectional threaded rod is rotated, the moving plate and the U-shaped block are driven to displace through threaded connection, the U-shaped block drives the telescopic plate to rotate and extend and retract, and the positioning ring and the push plate are moved. When the drill bit drills, the push plate limits the drill bit, the limited length of the drill bit during drilling is adjusted by changing the moving distance of the push plate, the drilling depth of the device is adjusted, and the convenience of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The utility model provides a electric drill of quick replacement drill bit and with depth control's plan view;

[0025] Figure 2 The utility model provides a electric drill of quick replacement drill bit and with depth control's elevation view;

[0026] Figure 3 The utility model provides a electric drill of quick replacement drill bit and with depth control's perspective view;

[0027] Figure 4 The utility model provides a electric drill of quick replacement drill bit and with depth control's partial structure split drawing;

[0028] Figure 5 The utility model provides a electric drill of quick replacement drill bit and with depth control's depth mechanism structure split drawing.

[0029] LEGEND:

[0030] 1, mounting seat; 2, depth mechanism; 201, mounting plate; 202, U-shaped block; 203, telescopic plate; 204, two-way threaded rod; 205, moving plate; 206, positioning ring; 207, push plate; 3, positioning cover; 4, drill bit; 5, positioning plate; 6, conical tooth disc; 7, conical gear; 8, first threaded rod; 9, moving frame; 10, gear; 11, second threaded rod; 12, rack; 13, positioning block; 14, positioning hole; 15, knob; 16, sliding groove; 17, handle; 18, rotating ring; 19, soft pad; 20, support. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] With reference to Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the utility model: the electric drill with depth control and quick drill bit replacement, comprising mounting seat 1, mounting seat 1 can fix device with electric drill, the left side of mounting seat 1 is provided with positioning cover 3, the left side of positioning cover 3 is provided with drill bit 4, drill bit 4 can carry out drilling, the periphery of the left side of mounting seat 1 is fixedly connected with positioning plate 5, the inner wall middle part of positioning cover 3 is rotatably connected with conical tooth disc 6, the periphery of the inner wall of positioning cover 3 is rotatably connected with conical gear 7, conical gear 7 is engagedly connected with conical tooth disc 6, rotating conical tooth disc 6 can be driven to rotate conical gear 7 through engagement transmission, the outer side of conical gear 7 is fixedly connected with first threaded rod 8, the outer side of first threaded rod 8 is threadedly connected with moving frame 9, rotating first threaded rod 8 can drive moving frame 9 to move through threaded connection, the outer side of moving frame 9 penetrates positioning cover 3 and is clamped with positioning plate 5, the clamping of moving frame 9 and positioning plate 5 can fix mounting seat 1 and positioning cover 3, the right side of conical tooth disc 6 is fixedly connected with gear 10, the rear side of the inner wall of positioning cover 3 is rotatably connected with second threaded rod 11, the outer side of second threaded rod 11 is threadedly connected with rack 12, rotating second threaded rod 11 can drive rack 12 to move through threaded connection, rack 12 is engagedly connected with gear 10, through engagement transmission, gear 10 can be driven to rotate when rack 12 moves, the outer side of positioning cover 3 is provided with depth mechanism 2, depth mechanism 2 is used for adjusting drilling depth;

[0033] With reference to Figure 1 , Figure 2 and Figure 3The depth mechanism 2 comprises a mounting plate 201 fixedly connected to the outer side of the positioning cover 3, a bidirectional threaded rod 204 rotatably connected to the middle of the inner wall of the mounting plate 201, a moving plate 205 threadedly connected to the outer wall of the bidirectional threaded rod 204 on the upper and lower sides, the moving plate 205 being rotatable by the threaded connection of the bidirectional threaded rod 204, a U-shaped block 202 fixedly connected to the outer side of the moving plate 205 penetrating the mounting plate 201, a telescopic plate 203 rotatably connected to the inner side of the U-shaped block 202, a positioning ring 206 rotatably connected to the outer side of the telescopic plate 203, the U-shaped block 202 being movable to drive the telescopic plate 203 to move, and the positioning ring 206 being movable and telescopic by the movement of the telescopic plate 203, a push plate 207 rotatably connected to the top of the positioning ring 206, the push plate 207 being rotatable to reduce the abrasion intensity when being limited by the push plate 207, and the mounting plate 201 being fixedly connected to the drill bit 4 on the middle of the outer wall thereof;

[0034] With reference to Figure 1 , Figure 2 and Figure 3 , the outer wall of the mounting seat 1 is fixedly connected with positioning blocks 13 around, the outer side of the positioning blocks 13 is provided with positioning holes 14, the positioning holes 14 in the positioning blocks 13 are provided with threaded members, so that the device can be conveniently installed and fixed; the top of the positioning cover 3 is rotatably connected with a knob 15, the bottom of the knob 15 penetrates the positioning cover 3 and is fixedly connected with the second threaded rod 11, the knob 15 can be manually rotated to drive the second threaded rod 11 to rotate; the top of the mounting plate 201 is rotatably connected with a handle 17, the bottom of the handle 17 penetrates the mounting plate 201 and is fixedly connected with the bidirectional threaded rod 204, the handle 17 can be manually rotated to drive the bidirectional threaded rod 204 to rotate;

[0035] With reference to Figure 1 , Figure 2 and Figure 3 , the inner wall of the mounting plate 201 is provided with sliding grooves 16 on the front and back sides, the sliding grooves 16 are slidably connected with the U-shaped block 202, the sliding grooves 16 can improve the stability of the U-shaped block 202 during movement; the upper and lower sides of the left end of the mounting plate 201 are fixedly connected with supports 20, the outer side of the support 20 is fixedly connected with the drill bit 4, the support 20 can fix the drill bit 4 to the mounting plate 201 to improve the structural strength; the outer side of the push plate 207 is rotatably connected with a rotating ring 18, the outer side of the rotating ring 18 is fixedly connected with a soft pad 19, the soft pad 19 on the outer side of the rotating ring 18 can reduce the abrasion of the push plate 207;

[0036] Working principle: before using the device, first of all, the mounting seat 1 is fixed with electric drill, after rotating the second threaded rod 11 can drive rack 12 moves through threaded connection, to drive gear 10 and conical tooth disc 6 through meshing transmission, at this time, through meshing transmission can drive a plurality of bevel gears 7 and the first threaded rod 8 on it rotates, with the rotation of the first threaded rod 8 can drive moving frame 9 moves through threaded connection, through the positioning cover 3 and with the positioning plate 5 clamping, to the positioning cover 3 and its drill bit 4 and mounting seat 1 clamping, in this way, through rotating the second threaded rod 11 can be quickly disassembled and fixed on the drill bit 4;

[0037] And by rotating the bidirectional threaded rod 204, the moving plate 205 and the U-shaped block 202 on it can be moved through threaded connection, at this time, the movement of the U-shaped block 202 can push the telescopic plate 203 to rotate, at this time, the rotation and expansion of the telescopic plate 203 can drive the positioning ring 206 and the push plate 207 on it to move, when the push plate 207 moves, it can be limited by the push plate 207 when drilling the hole of the drill bit 4, and the length of the drill bit 4 limited when drilling the hole can be adjusted by adjusting the moving distance of the push plate 207, so as to adjust the drilling depth of the device.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for the skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. An electric drill with quick change drill bits and depth control comprising a mounting base (1) characterised in that: The left side of the mounting seat (1) is provided with a positioning cover (3), the left side of the positioning cover (3) is provided with a drill bit (4), the left side of the mounting seat (1) is fixedly connected with a positioning plate (5) around, the inner wall of the positioning cover (3) is rotatably connected with a conical tooth disc (6) in the middle, the inner wall of the positioning cover (3) is rotatably connected with a conical gear (7) around, the conical gear (7) is meshed with the conical tooth disc (6), the outer side of the conical gear (7) is fixedly connected with a first threaded rod (8), the outer side of the first threaded rod (8) is threadedly connected with a moving frame (9), the outer side of the moving frame (9) penetrates the positioning cover (3) and is clamped with the positioning plate (5), the right side of the conical tooth disc (6) is fixedly connected with a gear (10), the inner wall of the positioning cover (3) is rotatably connected with a second threaded rod (11) at the back, the outer side of the second threaded rod (11) is threadedly connected with a rack (12), the rack (12) is meshed with the gear (10), the outer side of the positioning cover (3) is provided with a depth mechanism (2), and the depth mechanism (2) is used for adjusting the drilling depth.

2. The quick-change drill bit with depth control according to claim 1, characterized in that: The depth mechanism (2) comprises an installation plate (201), the installation plate (201) is fixedly connected to the outer side of the positioning cover (3), the inner wall of the installation plate (201) is rotatably connected with a bidirectional threaded rod (204) in the middle, the outer wall of the bidirectional threaded rod (204) is threadedly connected with a moving plate (205) on the upper side and the lower side, the outer side of the moving plate (205) penetrates the installation plate (201) and is fixedly connected with a U-shaped block (202), the inner side of the U-shaped block (202) is rotatably connected with a telescopic plate (203), the outer side of the telescopic plate (203) is rotatably connected with a positioning ring (206), the top of the positioning ring (206) is rotatably connected with a push plate (207), and the outer wall of the installation plate (201) is fixedly connected with the drill bit (4) in the middle.

3. The quick-change bit and depth control electric drill according to claim 1, characterized in that: The outer wall of the mounting seat (1) is fixedly connected with a positioning block (13) around, the outer side of a plurality of positioning blocks (13) is provided with a positioning hole (14).

4. The quick-change bit and depth control electric drill according to claim 1, characterized in that: The top of the positioning cover (3) is rotatably connected with a knob (15), and the bottom of the knob (15) penetrates the positioning cover (3) and is fixedly connected with the second threaded rod (11).

5. The quick-change bit and depth control electric drill according to claim 2, characterized in that: The top of the installation plate (201) is rotatably connected with a handle (17), and the bottom of the handle (17) penetrates the installation plate (201) and is fixedly connected with the bidirectional threaded rod (204).

6. The quick-change bit and depth control electric drill according to claim 2, characterized in that: The inner wall of the installation plate (201) is provided with a sliding groove (16) on the front side and the back side, and the sliding groove (16) is slidably connected with the U-shaped block (202).

7. The quick-change bit and depth control electric drill according to claim 2, characterized in that: The left end of the installation plate (201) is fixedly connected with a support (20) on the upper side and the lower side, and the outer side of the support (20) is fixedly connected with the drill bit (4).

8. The quick-change bit and depth control electric drill according to claim 2, characterized in that: The outer side of the push plate (207) is rotatably connected with a rotating ring (18), and the outer side of the rotating ring (18) is fixedly connected with a soft pad (19).

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