Working head for screwdriver

Abstract

The utility model discloses a working head for a screwdriver, which comprises a main machine shell, an output shaft rotationally connected with the main machine shell is arranged in the main machine shell, and a working head body synchronously rotating with the output shaft is mounted on the output shaft; the working head body is rotationally connected with the main machine shell, a shaft sleeve is arranged between the working head body and the main machine shell, and a sealing piece is installed on the shaft sleeve. A lamp ring assembly coaxial with the working head body is arranged outside the main machine shell, the lamp ring assembly comprises an annular lamp ring body and a lampshade, the annular lamp ring body is arranged in the lampshade, and the lampshade is detachably connected with the main machine shell. The sealing element is arranged in the shaft sleeve of the main machine shell, so that the sealing effect is good; the annular lamp ring body is arranged on the outer layer of the host shell, the annular lamp ring body is controlled to emit light through the circuit board, the brightness is high, and the irradiation range is wide.

Description

Technical Field

[0001] This utility model belongs to the field of power tool technology, specifically relating to a working head for a screwdriver. Background Technology

[0002] Existing screwdrivers are commonly used power tools. Generally, a screwdriver's working head has an output shaft that drives the working head body of different models to rotate. A patent with publication number CN115042116A discloses a power tool including a housing, a motor located within the housing, a transmission mechanism driven by the motor, and a working head connected to the transmission mechanism. The motor drives the transmission mechanism to move the working head. The motor includes a motor shaft extending axially, a rotor fixedly connected to the motor shaft, and a stator located between the motor shaft and the rotor. Current power tools lack a sealed housing, resulting in poor waterproofing. Furthermore, the lighting components on existing power tools are traditional LED lights, with each LED independent and concentrated in one area of ​​the housing, leading to poor lighting performance. Therefore, a new working head design for screwdrivers is needed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a working head for a screwdriver. This invention achieves good sealing by installing a sealing element inside the bushing of the main housing; and it features an annular lamp body on the outer layer of the main housing, which is controlled by a circuit board to illuminate, resulting in high brightness and a wide illumination range.

[0004] The objective of this invention is achieved through the following technical solution: a working head for a screwdriver, comprising a main housing, an output shaft rotatably connected thereto within the main housing, and a working head body rotatably rotating thereto mounted on the output shaft; the working head body is rotatably connected to the main housing, and a bushing is provided between the working head body and the main housing, with a seal installed on the bushing; a lamp ring assembly coaxially arranged with the working head body is provided on the outside of the main housing, the lamp ring assembly comprising an annular lamp ring body and a lampshade, the annular lamp ring body being disposed inside the lampshade, and the lampshade being detachably connected to the main housing.

[0005] Preferably, a working head body is fixedly mounted on the output shaft, and a bushing is sleeved on the working head body, allowing the working head body to rotate relative to the bushing; the head of the main housing is provided with an annular groove, and a bushing is provided in the annular groove.

[0006] Preferably, the outer contour of the bushing is adapted to the outer contour of the annular groove; the bushing is a metal part, and the head end of the bushing facing the main housing is provided with an annular step, and a sealing element is provided in the annular step.

[0007] Preferably, the seal is an oil seal, with one end abutting against the inner wall of the annular groove and the other end abutting against the annular step; the outer contour of the seal matches the outer contour of the annular step, and the thickness of the seal is the same as the depth of the annular step.

[0008] Preferably, the working head body is provided with a limiting step, and the bottom end face of the bushing abuts against the limiting step.

[0009] The annular groove facilitates the installation of the bushing; the inner wall of the annular groove and the limiting step of the working head body limit the bushing, thus preventing displacement. Similarly, the inner wall of the annular groove and the annular step of the bushing limit the sealing element, preventing displacement. The sealing element is positioned within the annular step, resulting in good sealing performance and easy installation.

[0010] Preferably, the lamp ring assembly further includes a control circuit board, an outer plastic shell, and an inner plastic shell, which are integrally formed together. The lamp cover contains an annular lamp ring body and a control circuit board, which are fitted together.

[0011] Preferably, the lampshade is annular, with an inner plastic shell on the inner ring and an outer plastic shell on the outer ring; the outer plastic shell, the inner plastic shell, and the lampshade are glued together as a whole, and when the lampshade is installed on the main unit housing, the inner plastic shell is fitted to the outer wall of the main unit housing.

[0012] Preferably, the main unit housing is provided with a first step, and the outer plastic shell and the lampshade simultaneously abut against the first step.

[0013] Preferably, the lampshade has a second step inside, and the second step has an annular lamp ring body; the annular lamp ring body and the control circuit board are fixedly connected, and when the lampshade is installed on the main unit housing, the control circuit board is fitted to the outer wall of the main unit housing.

[0014] Preferably, the outer wall of the main unit housing is provided with an annular groove, and the inner ring of the lampshade is provided with an annular protrusion; when the lampshade is installed on the main unit housing, the annular protrusion is engaged in the annular groove, and the outer contour of the annular protrusion matches the outer contour of the annular groove.

[0015] The outer and inner plastic shells and the lampshade are integrally molded, resulting in higher structural strength and safer, more reliable use. The lampshade is positioned using a first step and an annular groove, ensuring a more secure connection between the lampshade and the main housing. A second step engages with the outer wall of the main housing to further limit the annular lamp ring body, preventing displacement. The annular lamp ring body is fixed to the control circuit board and electrically connected. The annular lamp ring body contains several annularly distributed LED beads, allowing the control circuit board to control their illumination, resulting in good synchronization, a wide illumination range, and high brightness. The annular protrusion and the annular groove facilitate easy assembly and disassembly of the lamp ring assembly for maintenance.

[0016] Compared with the prior art, this utility model has the following advantages: 1. By installing a bushing inside the main housing, and the bushing containing a sealing element, the opening end of the main housing has a certain sealing effect; 2. The bushing contains an annular step, which facilitates the placement of the sealing element and improves the sealing effect; 3. By installing an annular lamp ring body outside the main housing, the annular lamp ring body emits light through a control circuit board, resulting in a large light emission range, high synchronization, and high overall brightness; 4. The annular lamp ring body is set inside the lampshade, and the lampshade is detachably connected to the main housing, making disassembly and assembly more convenient. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a diagram of the internal structure of the present invention;

[0019] Figure 3 This is an exploded view of the present invention;

[0020] Figure 4 This is a 3D view of the lampshade;

[0021] Figure 5 A three-dimensional view of the working head body;

[0022] Figure 6 This is a diagram of the internal structure of the main unit casing;

[0023] The markings in the diagram are: 1. Main housing; 2. Output shaft; 3. Working head body; 31. Limiting step; 4. Bushing; 41. Annular step; 5. Seal; 6. Lamp ring assembly; 61. Annular lamp ring body; 62. Lamp cover; 63. Control circuit board; 64. Outer plastic shell; 65. Inner plastic shell; 7. Annular groove; 8. First step; 9. Second step; 10. Annular slot; 11. Annular protrusion; 12. Limiting groove; 13. Limiting protrusion. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0025] like Figures 1 to 6 As shown, this embodiment discloses a working head for a screwdriver, including a main housing 1, an output shaft 2 rotatably connected to the main housing 1, a working head body 3 rotatably connected to the output shaft 2, the working head body 3 rotatably connected to the main housing 1, a bushing 4 between the working head body 3 and the main housing 1, and a seal 5 installed on the bushing 4; a lamp ring assembly 6 coaxially arranged with the working head body 3 is provided on the outside of the main housing 1, the lamp ring assembly 6 includes an annular lamp ring body 61 and a lamp cover 62, the annular lamp ring body 61 is provided inside the lamp cover 62, and the lamp cover 62 is detachably connected to the main housing 1.

[0026] A working head body 3 is fixedly mounted on the output shaft 2. A bushing 4 is fitted onto the working head body 3, and the working head body 3 can rotate relative to the bushing 4. The head of the main housing 1 has an annular groove 7, and the bushing 4 is housed within the annular groove 7. The outer contour of the bushing 4 matches the outer contour of the annular groove 7. The bushing 4 is a metal part, and an annular step 41 is provided at the head end of the bushing 4 facing the main housing 1. A sealing element 5 is provided within the annular step 41. The sealing element 5 is an oil seal, with one end abutting against the inner wall of the annular groove 7 and the other end abutting against the annular step 41. The outer contour of the sealing element 5 matches the outer contour of the annular step 41, and the thickness of the sealing element 5 is the same as the depth of the annular step 41. A limiting step 31 is provided on the working head body 3, and the bottom end face of the bushing 4 abuts against the limiting step 31.

[0027] The lamp ring assembly 6 further includes a control circuit board 63, an outer plastic shell 64, and an inner plastic shell 65, which are integrally formed with the lampshade 62. The lampshade 62 contains an annular lamp ring body 61 and a control circuit board 63, which are fitted together. The lampshade 62 is circular, with an inner plastic shell 65 on its inner ring and an outer plastic shell 64 on its outer ring. The outer plastic shell 64, inner plastic shell 65, and lampshade 62 are glued together as a single unit. When the lampshade 62 is mounted on the main housing 1, the inner plastic shell 65 is fitted against the outer wall of the main housing 1. The main housing 1 has a first step 8, on which the outer plastic shell 64 and lampshade 62 simultaneously abut. The lampshade 62 has a second step 9 inside, and an annular lamp ring body 61 is provided on the second step 9. The annular lamp ring body 61 is fixedly connected to the control circuit board 63. When the lampshade 62 is installed on the main housing 1, the control circuit board 63 is fitted against the outer wall of the main housing 1. The outer wall of the main housing 1 has an annular groove 10, and the inner ring of the lampshade 62 has an annular protrusion 11. When the lampshade 62 is installed on the main housing 1, the annular protrusion 11 is engaged in the annular groove 10, and the outer contour of the annular protrusion 11 is adapted to the outer contour of the annular groove 10. The lampshade 62 has a limiting groove 12, and the annular lamp ring body 61 has a limiting protrusion 13. The limiting protrusion 13 is disposed in the limiting groove 12, thus preventing the annular lamp ring body 61 from rotating relative to the lampshade 62.

[0028] The specific operation process of this embodiment is as follows: The working head body 3 is installed on the output shaft 2. The sealing element 5 is installed inside the annular step 41 of the bushing 4. Then, the bushing 4 is installed inside the annular groove 7 of the main housing 1. Next, the working head body 3 and the output shaft 2 are simultaneously installed into the main housing 1. The output shaft 2 is a standard component, and the entire output shaft 2 is rotatably connected to the main housing 1. The annular groove 7 facilitates the installation of the bushing 4. The inner wall of the annular groove 7 and the limiting step 31 of the working head body 3 limit the bushing 4, thus preventing displacement of the bushing 4. The inner wall of the annular groove 7 and the annular step 41 of the bushing 4 limit the sealing element 5, preventing displacement of the sealing element 5. The sealing element 5 is located inside the annular step 41, providing good sealing and easy installation.

[0029] Then, the lamp ring assembly 6 is installed. The outer plastic shell 64, inner plastic shell 65, and lampshade 62 are glued together as a single unit. The lampshade 62 is formed by injection molding, and then glued onto the outer plastic shell 64 and inner plastic shell 65 to connect them. The annular lamp ring body 61 and control circuit board 63 are installed inside the lampshade 62, and then the lampshade 62 is snapped onto the main housing 1. The outer plastic shell 64, inner plastic shell 65, and lampshade 62 are integrally molded, which increases the structural strength of the lampshade 62 and makes it safer and more reliable to use. The first step 8 and the annular groove 10 limit the lampshade 62, making the connection between the lampshade 62 and the main housing 1 more secure. The second step 9 cooperates with the outer wall of the main housing 1 to limit the annular lamp ring body 61 and prevent the annular lamp ring body 61 from shifting. The ring-shaped lamp body 61 is fixed to the control circuit board 63 and the two are electrically connected. The ring-shaped lamp body 61 is provided with a number of ring-shaped lamp beads. In this way, the lamp beads are controlled to light up by the control circuit board 63, resulting in good luminous synchronization, wide illumination range and high luminous brightness.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A working head for a screwdriver, comprising a main housing (1), characterized in that, The main housing (1) is provided with an output shaft (2) rotatably connected to it, and a working head body (3) rotatably connected to it is mounted on the output shaft (2); the working head body (3) is rotatably connected to the main housing (1), and a bushing (4) is provided between the working head body (3) and the main housing (1), and a seal (5) is installed on the bushing (4); the main housing (1) is provided with a lamp ring assembly (6) coaxially arranged with the working head body (3) on the outside, and the lamp ring assembly (6) includes an annular lamp ring body (61) and a lamp cover (62), the lamp cover (62) is provided with an annular lamp ring body (61) inside, and the lamp cover (62) is detachably connected to the main housing (1).

2. The working head for a screwdriver according to claim 1, characterized in that, The output shaft (2) is fixedly mounted with a working head body (3), and a bushing (4) is sleeved on the working head body (3). The working head body (3) can rotate relative to the bushing (4). The head of the main housing (1) is provided with an annular groove (7), and the bushing (4) is provided in the annular groove (7).

3. The working head for a screwdriver according to claim 2, characterized in that, The outer contour of the bushing (4) is adapted to the outer contour of the annular groove (7); the bushing (4) is a metal part, and the bushing (4) has an annular step (41) at the head end facing the main housing (1), and a sealing element (5) is provided in the annular step (41).

4. The working head for a screwdriver according to claim 3, characterized in that, The sealing element (5) is an oil seal. One end of the sealing element (5) abuts against the inner wall of the annular groove (7), and the other end of the sealing element (5) abuts against the annular step (41). The outer contour of the sealing element (5) is adapted to the outer contour of the annular step (41), and the thickness of the sealing element (5) is the same as the depth of the annular step (41).

5. The working head for a screwdriver according to claim 1, characterized in that, The working head body (3) is provided with a limiting step (31), and the bottom end face of the bushing (4) abuts against the limiting step (31).

6. The working head for a screwdriver according to claim 1, characterized in that, The lamp ring assembly (6) also includes a control circuit board (63), an outer plastic shell (64), and an inner plastic shell (65), which are integrally formed with the outer plastic shell (64), the inner plastic shell (65), and the lamp cover (62); the lamp cover (62) is provided with an annular lamp ring body (61) and a control circuit board (63), which are fitted together with each other.

7. The working head for a screwdriver according to claim 6, characterized in that, The lampshade (62) is in the shape of a ring. The inner ring of the lampshade (62) is provided with an inner plastic shell (65), and the outer ring of the lampshade (62) is provided with an outer plastic shell (64). The outer plastic shell (64), the inner plastic shell (65) and the lampshade (62) are glued together as one piece. When the lampshade (62) is installed on the main unit housing (1), the inner plastic shell (65) is fitted to the outer wall of the main unit housing (1).

8. The working head for a screwdriver according to claim 6, characterized in that, The main unit housing (1) is provided with a first step (8), and the outer plastic shell (64) and the lampshade (62) simultaneously abut against the first step (8).

9. The working head for a screwdriver according to claim 6, characterized in that, The lampshade (62) has a second step (9) inside, and the second step (9) has an annular lamp ring body (61); the annular lamp ring body (61) and the control circuit board (63) are fixedly connected, and when the lampshade (62) is installed on the main unit housing (1), the control circuit board (63) is fitted to the outer wall of the main unit housing (1).

10. The working head for a screwdriver according to claim 6, characterized in that, The outer wall of the main housing (1) is provided with an annular groove (10), and the inner ring of the lampshade (62) is provided with an annular protrusion (11); when the lampshade (62) is installed on the main housing (1), the annular protrusion (11) is inserted into the annular groove (10), and the outer contour of the annular protrusion (11) is adapted to the outer contour of the annular groove (10).

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