A left-hand revolver electric drill

Abstract

The utility model provides a left wheel type electric drill, it includes casing, runner, locking mechanism, drill rod and drill head mechanism. The middle part of runner is equipped with cooperation hole, locking mechanism, drill head mechanism respectively are equipped in the both sides of runner. Locking mechanism includes locking frame, sliding seat, positioning pin, pin cap and spring, is equipped with sliding hole on locking frame, is equipped with locking hole respectively in the both ends of sliding hole, sliding seat is covered and is equipped in locking frame, is equipped with pin hole in sliding seat, positioning pin passes and is equipped in pin hole, the lower extreme of positioning pin is equipped with locking disc, pin cap is equipped in the upper extreme of positioning pin, spring is located between pin cap and sliding seat. One end of drill rod is connected with sliding seat, the other end of drill rod passes through cooperation hole. When positioning pin removes to locking hole position, the force of spring makes the locking disc of positioning pin enter locking hole, thereby carries out locking location to sliding seat and drill rod, can improve control precision, and avoid influence drill head switching operation, promote the reliability and use safety of electric drill.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a revolver-type electric drill. Background Technology

[0002] An electric drill is a drilling tool powered by electricity. It is a standard product among power tools and also the most in-demand power tool product. The working principle of an electric drill is that the rotor of a small-capacity electromagnetic rotary or electromagnetic reciprocating motor performs cutting work by creating a magnetic field. This work is driven by a transmission mechanism, which in turn drives the working device, which in turn drives gears to increase the power of the drill bit, thus enabling the drill bit to penetrate objects more effectively.

[0003] Traditional electric drills require manual bit changing, which is cumbersome and makes managing multiple drill bits inconvenient. Therefore, revolver-type electric drills, capable of switching between multiple drill bits, were developed. These drills typically have a drill holder similar to a revolver magazine, accommodating multiple drill bits. Rotating the drill holder moves the desired drill bit to the working position, and the drill rod pushes it out. The rotating wheel and drill rod then drive the drill bit to rotate. However, current revolver-type electric drills generally lack an axial limit mechanism for the drill rod, resulting in low control precision. This can easily affect the bit switching operation, reducing the drill's reliability and safety. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a revolver-type electric drill that uses a locking mechanism to limit the axial movement of the drill rod, thereby improving control accuracy, avoiding interference with drill bit switching operations, and enhancing the reliability and safety of the electric drill.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a revolver-type electric drill, which includes a housing, a revolver, a locking mechanism, a drill rod, and a drill bit mechanism.

[0007] The rotating wheel is rotatably disposed in the housing, and a mating hole is provided in the middle of the rotating wheel along the first direction.

[0008] The locking mechanism and the drill bit mechanism are respectively located on both sides of the rotary wheel in the first direction.

[0009] The locking mechanism includes a locking frame, a slide block, a positioning pin, a pin cap, and a spring. The locking frame is fixed inside the housing along a first direction. The locking frame has a sliding hole extending along the first direction, and locking holes are respectively provided at both ends of the sliding hole in the first direction. The slide block is sleeved on the locking frame. The slide block has a pin hole along a second direction, and the pin hole corresponds to the sliding hole. The positioning pin passes through the pin hole. A locking disc is provided at the lower end of the positioning pin. The inner diameter of the pin hole is smaller than the outer diameter of the locking disc. The outer diameter of the locking disc is larger than the width of the sliding hole along a third direction but not larger than the inner diameter of the locking hole. The pin cap is provided at the upper end of the positioning pin. The spring is sleeved outside the positioning pin and located between the pin cap and the slide block.

[0010] The drill rod is arranged along a first direction, one end of the drill rod is connected to the slide block, and the other end of the drill rod passes through the mating hole.

[0011] Preferably, the drill bit mechanism includes a drill bit holder, a drill bit, and a sleeve. The drill bit holder is rotatably disposed within the housing. The drill bit holder has a plurality of mounting cavities circumferentially provided for accommodating the drill bit, each mounting cavity extending along a first direction. The sleeve is rotatably disposed on the side of the drill bit holder away from the rotary wheel, and the sleeve is aligned with the mating hole and one of the mounting cavities.

[0012] Preferably, the inner wall of the sleeve is provided with multiple convex ribs spaced apart circumferentially, the drill rod and the drill bit are respectively corresponding polygonal column structures, and the structure of the mating hole matches the structure of the drill rod.

[0013] Preferably, the cross-section of the rib is triangular.

[0014] Preferably, the slide has a flat hole along the first direction, the pin hole communicates with the flat hole, and the locking bracket passes through the flat hole.

[0015] Preferably, a limiting step is formed between the flat hole and the pin hole.

[0016] Preferably, the slide block is provided with a first mounting groove, the pin cap is provided with a corresponding second mounting groove, the lower end of the spring is fixed in the first mounting groove, and the upper end of the spring is fixed in the second mounting groove.

[0017] Preferably, the pin cap has grooves on both sides, and anti-slip strips are provided in the grooves.

[0018] Preferably, the drill rod has a connecting post at one end connected to the slide, and the slide has a corresponding connecting hole extending in the first direction. The connecting post passes through the connecting hole, and the end of the connecting post is limited by a retaining ring.

[0019] Preferably, the drill rod has a first guide structure at one end facing the drill bit mechanism, and the drill bit has a corresponding second guide structure at one end facing the drill rod.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: In the revolver-type electric drill of this utility model, when the positioning pin moves to the locking hole position at both ends, the force of the spring causes the locking plate of the positioning pin to enter the locking hole, thereby locking and limiting the slide and drill rod, which can improve the control accuracy, avoid affecting the drill bit switching operation, and improve the reliability and safety of the electric drill. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a revolver-type electric drill according to the present invention.

[0022] Figure 2 This is a perspective view of the rotary wheel, locking mechanism, drill rod, and drill bit mechanism in some embodiments of this utility model.

[0023] Figure 3 This is a cross-sectional view of the rotary wheel, locking mechanism, drill rod, and drill bit mechanism in some embodiments of this utility model.

[0024] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0025] Figure 5 for Figure 3 Enlarged view of the structure at point B.

[0026] Figure 6 This is a schematic diagram showing the disassembled structure of the locking mechanism in some embodiments of the present invention.

[0027] Figure 7 This is a schematic diagram showing the disassembled structure of the rotary wheel, drill rod, and drill bit mechanism in some embodiments of this utility model.

[0028] Figure 8 This is a cross-sectional view of the slide in some embodiments of the present invention.

[0029] Figure 9 A cross-sectional view of the impeller, locking mechanism, drill pipe, and drill bit mechanism in another configuration.

[0030] In the diagram, 10-shell, 20-rotor, 21-mating hole, 30-locking mechanism, 31-locking frame, 311-sliding hole, 312-locking hole, 32-slide block, 321-pin hole, 322-flat hole, 323-limiting step, 324-first mounting groove, 325-connecting hole, 33-positioning pin, 331-locking disc, 34-pin cap, 341-second mounting groove, 342-groove, 343-anti-slip strip, 35-spring, 40-drill rod, 41-connecting column, 42-clamping ring, 50-drill bit mechanism, 51-drill bit seat, 511-mounting cavity, 52-drill bit, 53-sleeve, 531-rib, 60-drive mechanism, 61-motor, 62-reducer, 63-drive wheel. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0032] In the description of this utility model, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates at least two.

[0033] In the description of this utility model, references to "one embodiment" or "some embodiments" mean that one or more embodiments of the utility model include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the phrases "one embodiment," "some embodiments," "other embodiments," "and other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0034] This utility model provides a revolver-type electric drill, as shown in the reference. Figure 1 The revolver-type electric drill includes a housing 10, a rotating wheel 20, a locking mechanism 30, a drill rod 40, and a drill bit mechanism 50. It is understood that the first direction X1 described below corresponds to... Figure 1The left and right directions (axial direction of drill rod 40) and the second direction X2 of the left-right wheel type electric drill correspond to Figure 1 The vertical direction of the left-hand drive electric drill, and the third direction X3 correspond to Figure 1 The direction is perpendicular to the plane of the paper, and the first direction X1, the second direction X2, and the third direction X3 are perpendicular to each other.

[0035] Specifically, in conjunction with reference Figure 1 , Figure 2 and Figure 7 The rotating wheel 20 is rotatably disposed in the housing 10, and the middle part of the rotating wheel 20 is provided with a mating hole 21 along the first direction X1.

[0036] The locking mechanism 30 and the drill bit mechanism 50 are respectively located on both sides of the rotary wheel 20 in the first direction X1. (Refer to...) Figure 1 In one embodiment, the locking mechanism 30 is located on the left side of the rotary wheel 20, and the drill bit mechanism 50 is located on the right side of the rotary wheel 20.

[0037] Reference Figures 2 to 6 The locking mechanism 30 includes a locking frame 31, a slide 32, a positioning pin 33, a pin cap 34, and a spring 35. The locking frame 31 is fixed inside the housing 10 along a first direction X1. The locking frame 31 is provided with a sliding hole 311 extending along the first direction X1, and locking holes 312 are respectively provided at both ends of the sliding hole 311 along the first direction X1. The locking holes 312 are circular holes, and the inner diameter of the locking holes 312 is larger than the width of the sliding hole 311 along the third direction X3.

[0038] A slide block 32 is fitted onto a locking frame 31. A pin hole 321 is provided in the slide block 32 along the second direction X2, corresponding to a sliding hole 311. A positioning pin 33 passes through the pin hole 321. A locking disc 331 is provided at the lower end of the positioning pin 33. The inner diameter of the pin hole 321 is smaller than the outer diameter of the locking disc 331. The outer diameter of the locking disc 331 is larger than the width of the sliding hole 311 along the third direction X3 but not larger than the inner diameter of the locking hole 312.

[0039] A pin cap 34 is located at the upper end of the positioning pin 33, and a spring 35 is sleeved on the outside of the positioning pin 33 and located between the pin cap 34 and the slide block 32. Correspondingly, an opening is provided on the housing 10 for the pin cap 34 to pass through. The opening extends along the first direction X1 and corresponds vertically to the sliding hole 311.

[0040] The drill rod 40 is set along the first direction X1, one end of the drill rod 40 is connected to the slide 32, and the other end of the drill rod 40 passes through the mating hole 21.

[0041] Reference Figure 3 and Figure 4When the locating pin 33 is in the right-side locking hole 312 position, the force of the spring 35 (upward tension) causes the locking disc 331 of the locating pin 33 to be positioned within the right-side locking hole 312, thereby locking and limiting the slide 32 and drill rod 40 in the first direction X1. When it is necessary to adjust the position of the drill rod 40 (or to switch drill bits), press down on the pin cap 34 to move the locating pin 33 downward out of the right-side locking hole 312, and then push the pin cap 34 to the left to move the locating pin 33 to the left along the sliding hole 311, thereby causing the slide 32 and drill rod 40 to move to the left as a whole. (Refer to...) Figure 9 When the positioning pin 33 moves to the position of the locking hole 312 on the left, the cap 34 is released. The force of the spring 35 (upward pulling force) drives the positioning pin 33 to move upward, so that the locking plate 331 of the positioning pin 33 enters the locking hole 312 on the left, thereby locking and limiting the slide 32 and the drill rod 40 in the first direction X1.

[0042] In the aforementioned revolver-type electric drill, the axial positioning of the drill rod 40 is achieved through the linkage of various components in the locking mechanism 30, which can improve control accuracy, avoid affecting the drill bit switching operation, and enhance the reliability and safety of the electric drill.

[0043] It should be noted that the rotary wheel 20 can be driven by a commonly used electric drill drive mechanism in existing technology. (Refer to...) Figure 1 The drive mechanism 60 includes a motor 61, a reducer 62, and a drive wheel 63. The central axis of the drive wheel 63 is parallel to the central axis of the rotating wheel 20, and the drive wheel 63 meshes with the rotating wheel 20. The output shaft of the motor 61 is connected to the reducer 62, and the output shaft of the reducer 62 is connected to the drive wheel 63. When energized, the motor 61 provides power, which transmits torque through the reducer 62 to drive the drive wheel 63 to rotate, and the drive wheel 63 then drives the rotating wheel 20 to rotate. Of course, this utility model is not limited to this; in other embodiments, the drive mechanism can also adopt other reasonable structural designs.

[0044] Reference Figures 1 to 3 The drill bit mechanism 50 includes a drill bit holder 51, a drill bit 52, and a sleeve 53. The drill bit holder 51 is rotatably disposed within the housing 10. The drill bit holder 51 has a plurality of mounting cavities 511 circumferentially provided for accommodating the drill bit 52, and each mounting cavity 511 extends along a first direction X1. The sleeve 53 is rotatably disposed on the side of the drill bit holder 51 away from the rotary wheel 20, and the sleeve 53 is aligned with the mating hole 21 and one of the mounting cavities 511. The structure of the sleeve 53 matches the structure of the drill rod 40 and the drill bit 52, respectively.

[0045] In application, different types of drill bits 52 are placed in each mounting cavity 511 of the drill bit holder 51. When the drill bit 52 needs to be replaced, the drill bit holder 51 is rotated so that the mounting cavity 511 corresponding to the required drill bit is aligned with the mating hole 21 and the sleeve 53. Then, the pin cap 34 drives the slide 32 and the drill rod 40 to move to the right, so that the drill rod 40 passes through the mounting cavity 511 and pushes the drill bit 52 toward the sleeve 53. When the drill bit 53 is pushed out into place, it corresponds to the correct drill bit 52. Figure 3 In the state shown, the locating pin 33 is in the right-side locking hole 312 position. The force of the spring 35 (upward tension) causes the locking disc 331 of the locating pin 33 to be in the right-side locking hole 312, thereby locking and limiting the slide 32 and drill rod 40 in the first direction X1. During drilling operation, the rotation of the rotary wheel 20 can drive the drill rod 40 to rotate, and the drill rod 40 in turn drives the sleeve 53 and drill bit 52 to rotate.

[0046] When the drill bit needs to be switched again, press down on the pin cap 34 to move the positioning pin 33 downward out of the right locking hole 312. Then push the pin cap 34 to the left to move the positioning pin 33 to the left along the sliding hole 311, which in turn moves the slide 32 and the drill rod 40 to the left as a whole. The drill rod 40 moves out of the mounting cavity 511, and the drill rod 40 moves into place. Figure 9 In the state shown, under the force of spring 35, the locking disc 331 of the positioning pin 33 enters the locking hole 312 on the left side, thereby locking and limiting the slide 32 and drill rod 40 in the first direction X1. Afterwards, rotate the drill bit seat 51 so that the mounting cavity 511 corresponding to the required drill bit is aligned with the mating hole 21 and sleeve 53, and repeat the above-mentioned operation of ejecting the drill bit from the drill rod.

[0047] In the above operation, the locking mechanism 30 axially locks and limits the drill rod 40, which can control the positioning accuracy and prevent the drill rod 40 from hindering the drill bit switching operation, thereby improving the reliability and safety of the electric drill.

[0048] In some preferred embodiments, the inner wall of the sleeve 53 is provided with multiple circumferentially spaced ribs 531, and the drill rod 40 and drill bit 52 are corresponding polygonal prism structures, with the structure of the mating hole 21 matching the structure of the drill rod 40. (Refer to...) Figure 7 In one embodiment, the inner wall of the sleeve 53 is provided with six circumferentially spaced ribs 531. The drill rod 40 and the drill bit 52 are both hexagonal main structures. The mating hole 21 is an internal hexagonal hole that mates with the drill rod 40. When the rotary wheel 20 rotates, it can drive the drill rod 40 to rotate. After the drill rod 40 and the drill bit 52 are inserted into the sleeve 53, each rib of the drill rod 40 and the drill bit 52 is located between adjacent ribs 531, ensuring that the rotation of the drill rod 40 can drive the sleeve 53 and the drill bit 52 to rotate.

[0049] It should be noted that the rib 511 can be set as a reasonable structure such as a triangle or an arc. In a preferred embodiment, the cross section of the rib 511 is triangular, and when the drill rod 40 and the drill bit 52 are inserted into the sleeve 53, each rib of the drill rod 40 and the drill bit 52 is located between adjacent ribs 531.

[0050] Reference Figure 6 and Figure 8 The slide block 31 has a flat hole 322 along the first direction X1. The pin hole 321 communicates with the flat hole 322. The structure of the flat hole 322 matches the structure of the locking frame 31, and the locking frame 31 passes through the flat hole 322. Furthermore, a limiting step 323 is formed between the flat hole 322 and the pin hole 321. When the positioning pin 33 passes through the pin hole 321, the limiting step 323 can limit the positioning pin 33, so that the locking plate 331 is below the limiting step 323.

[0051] Reference Figure 4 and Figure 6 The slide block 31 is provided with a first mounting groove 324, and the pin cap 34 is provided with a corresponding second mounting groove 341. The lower end of the spring 35 is fixed in the first mounting groove 324, and the upper end of the spring 35 is fixed in the second mounting groove 341. In this way, the spring 35 can be effectively fixed.

[0052] Reference Figure 6 In some preferred embodiments, the pin cap 34 has grooves 342 on both sides, and anti-slip strips 343 are provided in the grooves 342. The grooves 342 are ergonomically designed, and the anti-slip strips 343 can enhance the friction between the pin cap 34 and the user's fingers, thereby making it easier for the user to press or push the pin cap 34.

[0053] It should be understood that the drill pipe 40 and the slide 32 are movably connected to ensure that the impeller 20 can drive the drill pipe 40 to rotate. (Refer to...) Figure 4 In some preferred embodiments, the end of the drill rod 40 connected to the slide 32 is provided with a connecting post 41, and the slide 32 is provided with a corresponding connecting hole 325 extending along the first direction X1. The connecting post 41 passes through the connecting hole 325, and the end of the connecting post 41 is limited by a retaining ring 42. When the rotary wheel 20 drives the drill rod 40 to rotate, the connecting post 41 can rotate within the connecting hole 325.

[0054] In some preferred embodiments, the end of the drill rod 40 facing the drill bit mechanism 50 is provided with a first guide structure, and the end of the drill bit 52 facing the drill rod 40 is correspondingly provided with a second guide structure. The first and second guide structures can be mutually cooperating groove / protrusion structures or protrusion / groove structures. When the drill rod 40 pushes out of the drill bit 52, the first and second guide structures cooperate to ensure precise alignment between the drill rod 40 and the drill bit 52, improving positioning accuracy. (Refer to...) Figure 5 In one embodiment, the first guide structure is a groove, and the second guide structure is a matching protrusion.

[0055] This invention achieves axial limiting and locking of the drill rod through the linkage of various components in the locking mechanism, which can improve control accuracy, avoid affecting drill bit switching operations, and enhance the reliability and safety of the electric drill.

[0056] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A revolver-type electric drill, characterized in that: The revolver-type electric drill includes a housing, a rotating wheel, a locking mechanism, a drill rod, and a drill bit mechanism; The rotating wheel is rotatably disposed in the housing, and the middle part of the rotating wheel is provided with a mating hole along the first direction; The locking mechanism and the drill bit mechanism are respectively located on both sides of the rotary wheel in the first direction; The locking mechanism includes a locking frame, a slide block, a positioning pin, a pin cap, and a spring. The locking frame is fixed inside the housing along a first direction. The locking frame has a sliding hole extending along the first direction, and locking holes are respectively provided at both ends of the sliding hole in the first direction. The slide block is sleeved on the locking frame. The slide block has a pin hole along a second direction, and the pin hole corresponds to the sliding hole. The positioning pin passes through the pin hole. A locking disc is provided at the lower end of the positioning pin. The inner diameter of the pin hole is smaller than the outer diameter of the locking disc. The outer diameter of the locking disc is larger than the width of the sliding hole along a third direction but not larger than the inner diameter of the locking hole. The pin cap is provided at the upper end of the positioning pin. The spring is sleeved outside the positioning pin and located between the pin cap and the slide block. The drill rod is arranged along a first direction, one end of the drill rod is connected to the slide block, and the other end of the drill rod passes through the mating hole.

2. The revolver-type electric drill as described in claim 1, characterized in that: The drill bit mechanism includes a drill bit holder, a drill bit, and a sleeve. The drill bit holder is rotatably disposed within the housing. The drill bit holder has a plurality of mounting cavities circumferentially provided for accommodating the drill bit, and each mounting cavity extends along a first direction. The sleeve is rotatably disposed on the side of the drill bit holder away from the rotary wheel, and the sleeve is aligned with the mating hole and one of the mounting cavities.

3. The revolver-type electric drill as described in claim 2, characterized in that: The inner wall of the sleeve is provided with multiple convex ribs spaced apart circumferentially. The drill rod and the drill bit are respectively polygonal cylindrical structures. The structure of the mating hole matches the structure of the drill rod.

4. The revolver-type electric drill as described in claim 3, characterized in that: The cross-section of the raised rib is triangular.

5. The revolver-type electric drill as described in claim 1, characterized in that: The slide block has a flat hole along the first direction, the pin hole communicates with the flat hole, and the locking bracket passes through the flat hole.

6. The revolver-type electric drill as described in claim 4, characterized in that: A limiting step is formed between the flat hole and the pin hole.

7. The revolver-type electric drill as described in claim 1, characterized in that: The slide block is provided with a first mounting groove, and the pin cap is provided with a corresponding second mounting groove. The lower end of the spring is fixed in the first mounting groove, and the upper end of the spring is fixed in the second mounting groove.

8. The revolver-type electric drill as described in claim 1, characterized in that: The pin cap has grooves on both sides, and anti-slip strips are provided in the grooves.

9. The revolver-type electric drill as described in claim 1, characterized in that: The drill rod has a connecting post at one end connected to the slide block. The slide block has a corresponding connecting hole extending in the first direction. The connecting post passes through the connecting hole, and the end of the connecting post is limited by a retaining ring.

10. The revolver-type electric drill as described in claim 1, characterized in that: The drill rod has a first guide structure at one end facing the drill bit mechanism, and the drill bit has a corresponding second guide structure at one end facing the drill rod.

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