Lithium battery right-angle impact wrench

Abstract

The utility model relates to the field of electric tools, and discloses a lithium battery right-angle impact wrench which comprises a right-angle wrench body and a drill bit, a mounting groove is formed in the inner wall of the left end of an output shaft of the right-angle wrench body, and an adjusting assembly is arranged in the mounting groove and comprises a mounting plate. The right end of the mounting plate is fixedly connected with an output shaft of the right-angle wrench body, the left end of the mounting plate is rotationally connected with a screw rod, the outer wall of the screw rod penetrates through and is in threaded connection with a moving frame, the left end of the moving frame is fixedly connected with the right end of a drill bit, and the outer wall of the screw rod is fixedly connected with a first bevel gear. And a protection assembly is arranged in the mounting plate. According to the drilling machine, through the arrangement of the adjusting assembly, the position, located in the mounting groove, of the moving frame can be adjusted, so that it is guaranteed that the drill bit can extend outwards by different lengths, it is guaranteed that the drilling machine can be normally used when a worker is located in a narrow space, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to a lithium-electric right-angle impact wrench. Background Art

[0002] The lithium-ion right-angle impact wrench is an electric tool that uses a lithium-ion battery as a power source. It combines a right-angle design with an impact function, has a high-efficiency, high-torque tightening capability, and can quickly disassemble and install screws and nuts of various specifications.

[0003] After searching, Chinese patent announcement number: CN217890813U discloses a lithium-powered right-angle impact wrench, including a right-angle shell, a gear bin is fixedly installed on the middle section of the inner wall of the right-angle shell, a motor is fixedly installed on the bottom end of the gear bin, an impact block is fixedly installed on the top of the gear bin, a transmission shaft is fixedly installed on the top of the impact block, the outer wall of the transmission shaft is rotatably connected to the inner wall of the right-angle shell through a bearing 1, a bevel gear 1 is fixedly installed on the top of the transmission shaft, and the bevel gear 1 is meshed with a bevel gear 2, a rotating shaft is arranged near the top inside the right-angle shell, the outer wall of the rotating shaft is rotatably connected to the inner wall of the right-angle shell through a bearing 2, and the bevel gear 2 is fixedly installed on one end of the rotating shaft. The above application document arranges all the mechanisms in a right-angle shell and is driven by a lithium battery, so that it can be used in spaces with relatively narrow spaces, large torque, and where gun-type impact wrenches cannot be used, thereby improving the utilization rate of impact wrenches.

[0004] Although the above application document uses lithium batteries to drive the device, which makes the space range of use wider, but in actual use, due to the limited length range of the drill bit, it is still troublesome when it needs to be used in a relatively narrow area where the front end of the right-angle shell cannot enter. Therefore, a lithium-powered right-angle impact wrench is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a lithium-electric right-angle impact wrench, which aims to improve the problem in the prior art that the drill bit is limited in length and cannot enter a smaller space.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lithium-ion right-angle impact wrench, comprising a right-angle wrench body and a drill bit, a mounting groove being provided on the inner wall at the left end of the output shaft of the right-angle wrench body, an adjustment component being arranged inside the mounting groove, the adjustment component comprising a mounting plate, the right end of the mounting plate being fixedly connected to the output shaft of the right-angle wrench body, a screw being rotatably connected to the left end of the mounting plate, a moving frame being penetrated through and threadedly connected to the outer wall of the screw, the left end of the moving frame being fixedly connected to the right end of the drill bit, a bevel gear being fixedly connected to the outer wall of the screw, a protection component being arranged inside the mounting plate, the protection component comprising an air pressure chamber and an installation chamber, the air pressure chamber being arranged on the inner wall of the installation plate, the installation chamber being arranged on the inner wall of the installation plate located on the inner side of the air pressure chamber, and a slide being slidably connected to the inner wall of the installation chamber.

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

[0008] The adjustment assembly also includes a rotating shaft, the outer wall of the rotating shaft passes through the inner wall of the right-angle wrench body, the top end of the rotating shaft is fixedly connected to a handle, and the bottom end of the rotating shaft is fixedly connected to a second bevel gear.

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

[0010] The right end of the slide plate is elastically connected to the inner wall of the installation bin by a spring, the left end of the slide plate is fixedly connected to a protective block, the inner wall of the installation plate between the air pressure bin 1 and the installation bin is provided with a slideway, the inner wall piston of the slideway is connected to a control block, the air pressure bin 1 is connected to the air pressure bin 2, the air pressure bin 2 is provided on the inner wall of the right-angle wrench body, and the inner wall piston of the air pressure bin 2 is connected to a control strip.

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

[0012] The bottom end of the control strip is elastically connected to the inner wall of the second air pressure chamber via a second spring, and the left end of the control strip is fixedly connected to the outer wall of the rotating shaft.

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

[0014] The screw rod is composed of a common threaded rod at the left end and a circular disc with a longer diameter at the right end, and a bayonet fitting with the protection block is provided at the right end of the circular disc.

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

[0016] The edge of the mounting plate is fitted with the inner wall of the mounting groove, and a plurality of through holes communicating with the air pressure chamber 2 are provided at a position where the mounting plate and the air pressure chamber 2 are located in the same vertical plane.

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

[0018] The cross-section of the control block is a shape formed by connecting an upper rectangle and a lower triangle, and the rectangular region of the control block is in contact with the inner wall of the slideway.

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

[0020] The shape of the air pressure chamber 2 is L-shaped, the shape of the control strip is L-shaped, the outer wall of the lower right end of the control strip is in contact with the inner wall of the air pressure chamber 2, and the spring 2 is arranged at the lower end of the left end area of ​​the control strip.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by adjusting the setting of the components, the position of the movable frame inside the installation groove can be adjusted, thereby ensuring that the drill bit can extend outward to different lengths, ensuring that it can be used normally when the staff is in a small space, making the application range wider.

[0023] 2. In the utility model, by setting the protection component, it is ensured that when the staff does not manually adjust the position of the moving frame, the screw rod cannot rotate relative to the mounting plate, thereby ensuring that the position of the drill bit will not change during use, thereby ensuring the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the utility model;

[0026] Figure 3 For the utility model Figure 2 A magnified schematic diagram of the three-dimensional structure of part A;

[0027] Figure 4 For the utility model Figure 3 A magnified schematic diagram of the three-dimensional structure of part B;

[0028] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged three-dimensional structure of part C in the middle.

[0029] Legend:

[0030] 1. Right-angle wrench body; 2. Drill bit; 3. Mounting slot; 41. Mounting plate; 42. Screw; 43. Moving frame; 44. Bevel gear one; 45. Rotating shaft; 46. Handle; 47. Bevel gear two; 51. Air pressure chamber one; 52. Mounting chamber; 53. Slide plate; 54. Spring one; 55. Protective block; 56. Slideway; 57. Control block; 58. Air pressure chamber two; 59. Control strip; 510. Spring two. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a lithium-powered right-angle impact wrench, comprising a right-angle wrench body 1 and a drill bit 2. A mounting groove 3 is provided on the inner wall of the left end of the output shaft of the right-angle wrench body 1. The mounting groove 3 is cylindrical in shape. An adjustment component is arranged inside the mounting groove 3. The adjustment component comprises a mounting plate 41. The outer wall shape of the mounting plate 41 matches the inner wall shape of the mounting groove 3. The right end of the mounting plate 41 is fixedly connected to the output shaft of the right-angle wrench body 1.

[0033] Reference Figure 1 - Figure 3 The left end of the mounting plate 41 is rotatably connected to a screw rod 42, and a moving frame 43 is penetrated through and threadedly connected to the outer wall of the screw rod 42. The moving frame 43 has and only has a rear end in contact with the surface of the screw rod 42, and the inner wall of the front end is larger than the outer diameter of the screw rod 42. The left end of the moving frame 43 is fixedly connected to the right end of the drill bit 2, and the working end of the drill bit 2 is arranged at the left end. The outer wall of the screw rod 42 is fixedly connected to a bevel gear 44.

[0034] Reference Figure 1 - Figure 3 The adjustment assembly also includes a rotating shaft 45, the outer wall of the rotating shaft 45 passes through the inner wall of the right-angle wrench body 1, the top of the rotating shaft 45 is fixedly connected to a handle 46, the outer wall of the handle 46 is provided with anti-slip stripes, and the bottom end of the rotating shaft 45 is fixedly connected to a bevel gear 47.

[0035] Reference Figure 3 - Figure 5A protection component is provided inside the mounting plate 41, and the protection component includes an air pressure chamber 51 and an installation chamber 52. The air pressure chamber 51 is opened on the inner wall of the mounting plate 41, and the shape of the air pressure chamber 51 is annular. The installation chamber 52 is opened on the inner wall of the mounting plate 41 on the inner side of the air pressure chamber 51. The inner wall of the installation chamber 52 is slidably connected with a slide plate 53, and the shape of the slide plate 53 is cylindrical. The right end of the slide plate 53 is elastically connected to the inner wall of the installation chamber 52 through a spring 54, one end of the spring 54 is fixedly connected to the right end of the slide plate 53, and the other end of the spring 54 is fixedly connected to the inner wall of the installation chamber 52. The left end of the slide plate 53 is fixedly connected with a protection block 55, and the number of the protection blocks 55 is set to be multiple. The screw rod 42 is composed of an ordinary threaded rod at the left end and a disc with a longer diameter at the right end. The setting of the disc ensures that the screw rod 42 can be better fixed, and the right end of the disc is provided with a bayonet that fits with the protection block 55.

[0036] Reference Figure 3 - Figure 5 The inner wall of the mounting plate 41 between the air pressure chamber 1 51 and the mounting chamber 52 is provided with a slideway 56, and the inner wall piston of the slideway 56 is connected to a control block 57, and the cross-sectional shape of the control block 57 is a shape formed by connecting a rectangle at the top and a triangle at the bottom. The shape setting of the control block 57 ensures that the control block 57 can drive the slide plate 53 to move to the right after moving downward, and the rectangular area of ​​the control block 57 fits with the inner wall of the slideway 56. Through the fitting setting, it is ensured that the gas inside the air pressure chamber 1 51 will not overflow, and the air pressure chamber 1 51 is connected to the air pressure chamber 2 58, and the air pressure chamber 2 58 is opened on the inner wall of the right-angle wrench body 1, and the edge of the mounting plate 41 fits with the inner wall of the mounting groove 3, and the mounting plate 41 and the air pressure chamber 2 58 are located in the same vertical plane. A plurality of through holes connected to the air pressure chamber 2 58 are opened, and the through holes are set to ensure that the gas inside the air pressure chamber 1 51 and the air pressure chamber 2 58 can be connected.

[0037] Reference Figure 3 - Figure 5 The inner wall piston of the air pressure chamber 58 is connected to a control strip 59, and the bottom end of the control strip 59 is elastically connected to the inner wall of the air pressure chamber 58 through a spring 510, one end of the spring 510 is fixedly connected to the bottom end of the control strip 59, and the other end of the spring 510 is fixedly connected to the inner wall of the air pressure chamber 58, and the left end of the control strip 59 is fixedly connected to the outer wall of the rotating shaft 45. The shape of the air pressure chamber 58 is L-shaped, and the shape of the control strip 59 is L-shaped. The outer wall of the lower right end of the control strip 59 is in contact with the inner wall of the air pressure chamber 58. The in-contact setting ensures that the gas inside the air pressure chamber 58 will not overflow, and the spring 510 is arranged at the lower end of the left end area of ​​the control strip 59.

[0038] Working principle: During use, when the staff needs to use the equipment in a relatively narrow location, the staff first presses down the handle 46. When the handle 46 moves downward, the handle 46 drives the control bar 59 to move downward, thereby increasing the gas pressure inside the air pressure chamber 2 58, thereby allowing the gas inside the air pressure chamber 2 58 to enter the interior of the air pressure chamber 1 51.

[0039] When the gas inside the air pressure chamber 51 increases, the air pressure inside the air pressure chamber 51 increases. Therefore, the control block 57 moves towards the direction away from the air pressure chamber 51 under the action of the air pressure. Therefore, the control block 57 enters the gap at the left end of the slide plate 53 and moves towards the direction close to the installation chamber 52.

[0040] After the control block 57 has entered a large part, the slide plate 53 moves to the right under the control of the control block 57, so that the protection block 55 leaves the latch at the rear end of the screw 42. At this time, the screw 42 can rotate. At the same time, after the handle 46 moves downward, the handle 46 drives the rotating shaft 45 and the bevel gear 2 47 to move downward, so that the bevel gear 2 47 moves to a position meshing with the bevel gear 1 44. At this time, the staff turns the handle 46 to rotate the rotating shaft 45 and the bevel gear 1 44.

[0041] When the bevel gear 44 rotates, the screw 42 rotates, so that the left and right positions of the moving frame 43 can be adjusted, so that the moving frame 43 drives the drill bit 2 to move to a suitable position. When the adjustment is completed, the staff stops pressing the handle 46. At this time, the control bar 59 is reset under the drive of the spring 2 510, so that the air pressure inside the air pressure chamber 2 58 becomes smaller, so that the control block 57 is reset under the action of the air pressure, so that the left end of the slide plate 53 is not restricted. At this time, the slide plate 53 has a leftward force under the elastic force of the spring 1 54. Therefore, at this time, the screw 42 can rotate at most relative to the mounting plate 41 by the distance between the two protection blocks 55, and then remain relatively fixed, so that the stability of the drill bit 2 during use can be guaranteed.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery right-angle impact wrench, comprising a right-angle wrench body (1) and a drill bit (2), characterized in that: The inner wall of the left end of the output shaft of the right-angle wrench body (1) is provided with a mounting groove (3), and an adjustment assembly is arranged inside the mounting groove (3). The adjustment assembly comprises a mounting plate (41), the right end of the mounting plate (41) is fixedly connected to the output shaft of the right-angle wrench body (1), the left end of the mounting plate (41) is rotatably connected to a screw rod (42), the outer wall of the screw rod (42) is penetrated and threadedly connected to a moving frame (43), and the left end of the moving frame (43) is connected to the drill bit (2 ), the outer wall of the screw rod (42) is fixedly connected with a bevel gear (44), a protection component is arranged inside the mounting plate (41), and the protection component includes an air pressure chamber (51) and an installation chamber (52), the air pressure chamber (51) is opened on the inner wall of the mounting plate (41), the installation chamber (52) is opened on the inner wall of the mounting plate (41) on the inner side of the air pressure chamber (51), and the inner wall of the installation chamber (52) is slidably connected with a slide plate (53).

2. The lithium-electric right-angle impact wrench according to claim 1, characterized in that: The adjustment assembly further comprises a rotating shaft (45), the outer wall of the rotating shaft (45) passes through the inner wall of the right-angle wrench body (1), the top end of the rotating shaft (45) is fixedly connected to a handle (46), and the bottom end of the rotating shaft (45) is fixedly connected to a bevel gear 2 (47).

3. The lithium-electric right-angle impact wrench according to claim 2, characterized in that: The right end of the slide plate (53) is elastically connected to the inner wall of the installation chamber (52) through a spring 1 (54), and the left end of the slide plate (53) is fixedly connected to a protection block (55). The inner wall of the installation plate (41) between the air pressure chamber 1 (51) and the installation chamber (52) is provided with a slideway (56), and the inner wall piston of the slideway (56) is connected to a control block (57). The air pressure chamber 1 (51) is connected to the air pressure chamber 2 (58), and the air pressure chamber 2 (58) is provided on the inner wall of the right-angle wrench body (1), and the inner wall piston of the air pressure chamber 2 (58) is connected to a control strip (59).

4. The lithium-electric right-angle impact wrench according to claim 3, characterized in that: The bottom end of the control strip (59) is elastically connected to the inner wall of the second air pressure chamber (58) via the second spring (510), and the left end of the control strip (59) is fixedly connected to the outer wall of the rotating shaft (45).

5. The lithium-electric right-angle impact wrench according to claim 3, characterized in that: The screw rod (42) is composed of a common threaded rod at the left end and a circular disc with a longer diameter at the right end, and a bayonet for fitting with the protection block (55) is provided at the right end of the circular disc.

6. The lithium-electric right-angle impact wrench according to claim 3, characterized in that: The edge of the mounting plate (41) is in contact with the inner wall of the mounting groove (3), and a plurality of through holes communicating with the second air pressure chamber (58) are provided at a position where the mounting plate (41) and the second air pressure chamber (58) are located in the same vertical plane.

7. The lithium-electric right-angle impact wrench according to claim 3, characterized in that: The cross-sectional shape of the control block (57) is a shape formed by connecting a rectangle at the top and a triangle at the bottom, and the rectangular region of the control block (57) is in contact with the inner wall of the slideway (56).

8. The lithium-electric right-angle impact wrench according to claim 4, characterized in that: The shape of the air pressure chamber 2 (58) is L-shaped, the shape of the control strip (59) is L-shaped, the outer wall of the lower right end of the control strip (59) is in contact with the inner wall of the air pressure chamber 2 (58), and the spring 2 (510) is arranged at the lower end of the left end area of ​​the control strip (59).

Images