Electric hand drill convenient to replace

Abstract

The utility model discloses an electric hand drill convenient to replace, which relates to the technical field of electric hand drills, and comprises an electric hand drill main body, a clamping mechanism and an extrusion part, the output end of the electric hand drill main body is connected with a drill bit, the clamping mechanism is used for fixing the drill bit at the output end of the electric hand drill main body, and the extrusion part comprises a rubber pad. The rubber pad is arranged between the clamping mechanism and the drill bit, and a clamping mechanism is arranged between the rubber pad and the clamping mechanism. By means of the arrangement of the extrusion part, the clamping mechanism works to drive the rubber pads to move simultaneously until the rubber pads make contact with the drill bit and deform and the rubber pads cannot deform any more, fixing of the drill bit is completed, and at the moment, one face of the deformed rubber pad is completely attached to the outer wall of the drill bit. The friction force generated when the drill bit is fixed is increased, so that when the electric hand drill body drives the drill bit to rotate to work, the drill bit is not prone to slipping, and the working stability of the electric hand drill is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric drill technology, and in particular to an electric drill that is easy to replace. Background Technology

[0002] An electric drill is a portable power tool mainly used for drilling holes and tightening screws.

[0003] When using an electric drill, insert the drill bit into the output end of the drill and tighten it so that multiple clamping blocks hold the drill bit in place. Then, the drill bit can be rotated by turning on the electric drill to perform the work.

[0004] Modern electric drills are compatible with various drill bits, but these bits come in different sizes. The clamping block at the drill's output end, used to hold the drill bit, is a fixed size. This means that when clamping different sized drill bits, the outer wall of the clamping block cannot completely fit the drill bit, resulting in point contact between the clamping block and the drill bit. This weakens the grip on the drill bit, causing it to slip during operation and reducing the drill's stability. Utility Model Content

[0005] The purpose of this invention is to provide an easy-to-replace electric drill to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a replaceable electric drill, comprising:

[0007] The main body of the electric drill, with a drill bit connected to its output end;

[0008] A clamping mechanism is disposed between the main body of the electric drill and the drill bit, and the clamping mechanism is used to fix the drill bit to the output end of the main body of the electric drill;

[0009] An extrusion component, the extrusion component including a rubber pad, the rubber pad being disposed between a clamping mechanism and a drill bit, and an engagement mechanism being provided between the rubber pad and the clamping mechanism.

[0010] Preferably, the clamping mechanism includes clamping blocks arranged in a ring array on the outer wall of the drill bit, the outer wall of the clamping blocks is provided with a pressing mechanism, a connecting mechanism is provided between the clamping blocks and the main body of the electric drill, and the locking mechanism is provided between the rubber pad and the clamping blocks.

[0011] Preferably, the engaging mechanism includes a wedge-shaped strip, which is fixedly connected to the outer wall of the rubber pad. The outer wall of the clamping block is provided with a wedge-shaped groove, and the outer wall of the wedge-shaped strip is slidably connected to the inner wall of the wedge-shaped groove.

[0012] Preferably, the connecting mechanism includes:

[0013] Rotary base, which is fixedly connected to the output end of the electric drill body;

[0014] A connecting seat is fixedly connected to one end of a rotating seat, and the pressing mechanism is disposed on the outer wall of the connecting seat;

[0015] A connecting tube is fixedly connected to one end of a connecting seat. The outer wall of the connecting tube has slots arranged in a ring array. The outer wall of the clamping block is slidably connected to the inner wall of the slots.

[0016] Preferably, the extrusion mechanism includes:

[0017] A compression sleeve, which is threaded onto the outer wall of the connecting seat;

[0018] The first extrusion surface has an inner wall formed by the extrusion sleeve;

[0019] The second extrusion surface is formed on the outer wall of the clamping block.

[0020] Preferably, the inner wall of the slot is provided with a sliding groove, the outer wall of the clamping block is fixedly connected with a slider, the outer wall of the slider is slidably connected to the inner wall of the sliding groove, a spring is provided between the slider and the inner wall of the sliding groove, a fixing rod is fixedly connected to the inner wall of the sliding groove, a limit hole is provided on the outer wall of the slider, the outer wall of the fixing rod is movably inserted into the inner wall of the limit hole, and the spring is sleeved on the outer wall of the fixing rod.

[0021] The technical effects and advantages of this utility model are as follows:

[0022] This invention utilizes a pressing component. After the drill bit is inserted into the output end of the electric drill body, the clamping mechanism drives multiple rubber pads to move simultaneously until the rubber pads contact the drill bit and deform. The drill bit is then fixed when the rubber pads can no longer deform. At this point, one side of the deformed rubber pad completely adheres to the outer wall of the drill bit, increasing the friction during drill bit fixing. This prevents the drill bit from slipping when the electric drill body rotates to operate, thus improving the stability of the electric drill. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a side sectional view of the extrusion sleeve of this utility model.

[0025] Figure 3 This is a front sectional view of the connecting pipe of this utility model.

[0026] In the diagram: 101, main body of the electric drill; 102, drill bit; 201, clamping block; 301, rubber pad; 401, wedge strip; 402, wedge groove; 501, rotating base; 502, connecting base; 503, connecting pipe; 504, slot; 601, extrusion sleeve; 602, first extrusion surface; 603, second extrusion surface; 701, sliding groove; 702, slider; 703, spring; 704, fixing rod; 705, limiting hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides, for example Figures 1-3 The illustrated electric drill includes a drill body 101, a clamping mechanism, and a pressing component. A drill bit 102 is connected to the output end of the drill body 101. The clamping mechanism is disposed between the drill body 101 and the drill bit 102, and is used to fix the drill bit 102 to the output end of the drill body 101. The pressing component includes a rubber pad 301, which is disposed between the clamping mechanism and the drill bit 102. A locking mechanism is provided between the rubber pad 301 and the clamping mechanism to insert the drill bit 102 into the drill body 101. After the output end, the clamping mechanism drives multiple rubber pads 301 to move simultaneously until the rubber pads 301 contact the drill bit 102 and deform until the rubber pads 301 can no longer deform, thus completing the fixation of the drill bit 102. At this time, one side of the deformed rubber pad 301 is completely in contact with the outer wall of the drill bit 102, increasing the friction when the drill bit 102 is fixed. This makes it less likely for the drill bit 102 to slip when the electric drill body 101 drives the drill bit 102 to rotate and work, thereby improving the stability of the electric drill.

[0029] The clamping mechanism includes clamping blocks 201 arranged in a ring array on the outer wall of the drill bit 102. The outer wall of the clamping blocks 201 is provided with a pressing mechanism. A connecting mechanism is provided between the clamping blocks 201 and the main body 101 of the electric drill. A locking mechanism is provided between the rubber pad 301 and the clamping blocks 201. Through the cooperation of multiple pressing mechanisms, multiple clamping blocks 201 can move simultaneously, ensuring the centering and fixing of the drill bit 102. It also facilitates the replacement of the drill bit 102 and improves the convenience of using the electric drill.

[0030] The engaging mechanism includes a wedge-shaped strip 401, which is fixedly connected to the outer wall of the rubber pad 301. The outer wall of the clamping block 201 is provided with a wedge-shaped groove 402. The outer wall of the wedge-shaped strip 401 is slidably connected to the inner wall of the wedge-shaped groove 402. The rubber pad 301 can be positioned by fully engaging the wedge-shaped strip 401 into the wedge-shaped groove 402. Since the rubber pad 301 is subjected to longitudinal force when deformed, the wedge-shaped strip 401 will not slip out of the wedge-shaped groove 402, thereby improving the stability of the rubber pad 301. The engaging mechanism facilitates the replacement of the rubber pad 301 and improves the convenience of using the rubber pad 301.

[0031] The connecting mechanism includes a rotary base 501, a connecting base 502, and a connecting pipe 503. The rotary base 501 is fixedly connected to the output end of the main body 101 of the electric drill. The connecting base 502 is fixedly connected to one end of the rotary base 501. A pressing mechanism is disposed on the outer wall of the connecting base 502. The connecting pipe 503 is fixedly connected to one end of the connecting base 502. The outer wall of the connecting pipe 503 has slots 504 arranged in a ring array. The outer wall of the clamping block 201 is slidably connected to the inner wall of the slots 504. When the main body 101 of the electric drill works, it drives the rotary base 501 to rotate. The rotary base 501 drives the connecting base 502 to rotate. The connecting base 502 drives the connecting pipe 503 to rotate. The connecting pipe 503 drives the clamping block 201 to rotate. This drives the drill bit 102 held by multiple clamping blocks 201 to rotate, thereby enabling the electric drill to work.

[0032] The extrusion mechanism includes an extrusion sleeve 601, a first extrusion surface 602, and a second extrusion surface 603. The extrusion sleeve 601 is threaded onto the outer wall of the connecting seat 502. The first extrusion surface 602 has an inner wall formed by the extrusion sleeve 601, and the second extrusion surface 603 has an outer wall formed by the clamping block 201. When installing the drill bit 102, the drill bit 102 is inserted between multiple clamping blocks 201 and into the connecting pipe 503 until the drill bit 102 abuts against the connecting seat 502. At this time, one hand holds the rotating seat 501, and the other hand rotates the extrusion sleeve 601. Through the engagement between the inner wall of the extrusion sleeve 601 and the outer wall of the connecting seat 502, This allows the extrusion sleeve 601 to move while rotating. When the extrusion sleeve 601 moves towards the rotary seat 501, the first extrusion surface 602 will press against the second extrusion surface 603, which will drive multiple clamping blocks 201 to move towards the drill bit 102. This causes the rubber pad 301 to press against the outer wall of the drill bit 102 until the rubber pad 301 deforms and presses tightly against it. At this point, the extrusion sleeve 601 can no longer rotate, thus completing the installation of the drill bit 102. This improves the ease of use of the electric drill. Anti-slip textures can be made on the outer walls of both the extrusion sleeve 601 and the rotary seat 501, making the extrusion mechanism more labor-saving and easier to operate.

[0033] The inner wall of the slot 504 is provided with a sliding groove 701. The outer wall of the clamping block 201 is fixedly connected to a slider 702. The outer wall of the slider 702 is slidably connected to the inner wall of the sliding groove 701. A spring 703 is provided between the slider 702 and the inner wall of the sliding groove 701. A fixing rod 704 is fixedly connected to the inner wall of the sliding groove 701. A limiting hole 705 is provided on the outer wall of the slider 702. The outer wall of the fixing rod 704 is movably inserted into the inner wall of the limiting hole 705. The spring 703 is sleeved on the outer wall of the fixing rod 704. Through the elastic action of the spring 703 on the slider 702, the second pressing surface 603 can always press against the first pressing surface 602. This allows the clamping block 201 to automatically reset when the drill bit 102 is changed by rotating the pressing sleeve 601 in the reverse direction. This makes it convenient to pull out the drill bit 102 and insert a new drill bit 102, further improving the convenience of changing the drill bit 102 with the electric drill.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An easy-to-change electric drill, characterized in that, include: A hand drill body (101), the output end of which is connected to a drill bit (102); A clamping mechanism is disposed between the main body (101) of the electric drill and the drill bit (102), and the clamping mechanism is used to fix the drill bit (102) to the output end of the main body (101) of the electric drill; The extrusion component includes a rubber pad (301) disposed between the clamping mechanism and the drill bit (102), and a locking mechanism is provided between the rubber pad (301) and the clamping mechanism.

2. The easily replaceable electric drill according to claim 1, characterized in that, The clamping mechanism includes a clamping block (201), which is arranged in a ring array on the outer wall of the drill bit (102). The outer wall of the clamping block (201) is provided with a squeezing mechanism. A connecting mechanism is provided between the clamping block (201) and the electric drill body (101). The locking mechanism is provided between the rubber pad (301) and the clamping block (201).

3. The easily replaceable electric drill according to claim 2, characterized in that, The engaging mechanism includes a wedge-shaped strip (401), which is fixedly connected to the outer wall of the rubber pad (301). The outer wall of the clamping block (201) is provided with a wedge-shaped groove (402), and the outer wall of the wedge-shaped strip (401) is slidably connected to the inner wall of the wedge-shaped groove (402).

4. The easily replaceable electric drill according to claim 2, characterized in that, The connecting mechanism includes: Rotary base (501), which is fixedly connected to the output end of the electric drill body (101); A connecting seat (502) is fixedly connected to one end of a rotating seat (501), and the pressing mechanism is disposed on the outer wall of the connecting seat (502); A connecting pipe (503) is fixedly connected to one end of a connecting seat (502). The outer wall of the connecting pipe (503) is provided with slots (504) in a ring array. The outer wall of the clamping block (201) is slidably connected to the inner wall of the slots (504).

5. The easily replaceable electric drill according to claim 4, characterized in that, The extrusion mechanism includes: A compression sleeve (601) is threaded onto the outer wall of the connecting seat (502); The first extrusion surface (602) has an inner wall of the extrusion sleeve (601) formed thereon; The second extrusion surface (603) is formed on the outer wall of the clamping block (201).

6. The easily replaceable electric drill according to claim 4, characterized in that, The inner wall of the slot (504) is provided with a sliding groove (701), and the outer wall of the clamping block (201) is fixedly connected with a slider (702). The outer wall of the slider (702) is slidably connected to the inner wall of the sliding groove (701). A spring (703) is provided between the slider (702) and the inner wall of the sliding groove (701). A fixing rod (704) is fixedly connected to the inner wall of the sliding groove (701). The outer wall of the slider (702) is provided with a limiting hole (705). The outer wall of the fixing rod (704) is movably inserted into the inner wall of the limiting hole (705). The spring (703) is sleeved on the outer wall of the fixing rod (704).

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