Screwdriver head and electric screwdriver

Abstract

The utility model provides a screwdriver blade and electric screwdriver relates to screwdriver technical field, the screwdriver blade includes: drive shaft, first gear, second gear, third gear and output tool bit, first gear is provided on the drive shaft, output tool bit is connected with third gear, third gear can rotate around the circumference of second gear rotating shaft, output tool bit is connected with output tool bit. And the included angle between the output tool bit and the driving shaft is adjustable. According to the screwdriver blade, the angle between the output tool bit and the driving shaft is adjusted by rotating the third gear. The adjusting angle of the output tool bit is large, the use requirement of a complex environment is met, the transmission ratio between gears is accurate, and the transmission efficiency is high. According to the electric screwdriver, the screwdriver blade is adopted, the angle of the output tool bit can be adjusted according to needs, the adjusting angle of the output tool bit is large, the transmission efficiency is high, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to a screwdriver head and an electric screwdriver. Background Art

[0002] There are two main types of electric screwdrivers: straight handle and gun type. They have their own advantages and disadvantages in different working environments. The straight handle is suitable for downward rotation, and the gun type is suitable for flat and upward rotation. In some complex working environments, two types of screwdrivers need to be used in combination, which is very inconvenient to have two types of screwdrivers. There are external conversion connectors on the market that can also achieve the conversion of the output shaft angle to adapt to different working conditions, but external parts are required, which is inconvenient to use.

[0003] At present, there are two main types of variable-angle electric screwdrivers on the market. One is a traditional screwdriver with a flexible universal shaft to adjust the angle of the cutter head, and the second is to achieve variable angles through multi-section universal joints. In the solution of adjusting the angle of the cutter head through a flexible universal shaft, the variable angle of the cutter head is small and cannot achieve a 90° turn. In the method of using universal joints to achieve steering, the rotation angle of a single-section universal joint is limited, and at least 3 sections of universal joints are required to achieve a 90° reversal. The multi-section universal joint reversing structure takes up a huge space, which makes the equipment unable to be miniaturized, and when multiple sections of universal joints are converted, each section will have efficiency loss, and the efficiency loss of two to three sections is more serious, and the transmission efficiency is low. Utility Model Content

[0004] The utility model aims to provide a screwdriver head and an electric screwdriver to solve the above technical problems.

[0005] In the first aspect, an embodiment of the utility model provides a screwdriver head, which includes: a driving shaft, a first gear, a second gear, a third gear and an output cutter head, the first gear is arranged on the driving shaft, the second gear is respectively meshed with the first gear and the third gear, and the rotating shaft of the second gear is perpendicular to the rotating shaft of the first gear, the output cutter head is connected to the third gear, and the third gear can rotate circumferentially around the rotating shaft of the second gear, so that the angle between the output cutter head and the driving shaft is adjustable.

[0006] Furthermore, the screwdriver head also includes a protective shell, the first gear, the second gear, and the third gear are all arranged inside the protective shell, and an adjustment slot is arranged on the protective shell. The output cutter head passes through the adjustment slot, and the output cutter head can rotate along the adjustment slot.

[0007] Furthermore, the screwdriver head also includes a transmission shaft, both ends of which are rotatably connected to the protective shell, and the transmission shaft and the driving shaft are perpendicular to each other, and the second gear is arranged on the transmission shaft.

[0008] Furthermore, the number of the second gears is two, and the two second gears are symmetrically arranged on the transmission shaft.

[0009] Furthermore, a gear rack is rotatably arranged inside the protective shell, and the gear rack is sleeved on the outside of the first gear, the second gear and the third gear. A rotation groove and a fixing hole are respectively opened on the gear rack, and the drive shaft is passed through the rotation groove, and the drive shaft can rotate along the rotation groove. The output cutter head is passed through the fixing hole and extends to the outside of the gear rack. When the angle of the output cutter head is adjusted, the output cutter head rotates synchronously with the gear rack.

[0010] Furthermore, a locking assembly is provided inside the protective shell, a limiting slot is provided on the gear rack, the locking assembly has a locking position engaged with the limiting slot and an unlocking position disengaged from the limiting slot, and the locking assembly is driven to switch between the locking position and the unlocking position.

[0011] Furthermore, the locking assembly includes a locking button and a return spring. The locking button is provided with a connecting slide rod and a limiting protrusion. The protective shell is provided with a mounting hole. The connecting slide rod is slidably arranged in the mounting hole. The locking button can slide along the length direction of the connecting slide rod. When the locking button slides, the limiting protrusion can be stuck in or out of the limiting groove. The return spring is sleeved on the connecting slide rod, so that the locking button has a tendency to reset to the locking position.

[0012] Furthermore, a dustproof component is provided inside the protective shell, and the dustproof component is provided between the protective shell and the gear rack for shielding the adjustment slide groove.

[0013] Furthermore, the dustproof assembly includes a dustproof plate, which is slidably arranged between the protective shell and the gear rack. The outer wall of the gear rack is provided with a protrusion, which can abut against the dustproof plate. When adjusting the angle of the output cutter head, the protrusion can push the dustproof plate to slide along the adjustment slide groove.

[0014] On the other hand, an embodiment of the utility model further provides an electric screwdriver, which comprises any one of the above-mentioned screwdriver heads and a drive assembly, wherein the output shaft of the drive assembly is connected to the drive shaft of the screwdriver head.

[0015] The utility model provides a screwdriver head, which includes: a driving shaft, a first gear, a second gear, a third gear and an output cutter head, wherein the first gear is arranged on the driving shaft, the second gear is meshed with the first gear and the third gear respectively, and the rotating shaft of the second gear is perpendicular to the rotating shaft of the first gear, the output cutter head is connected to the third gear, and the third gear can rotate circumferentially around the rotating shaft of the second gear, so that the angle between the output cutter head and the driving shaft is adjustable. Through the transmission of three bevel gears, the output cutter head can ensure the output effect of the output cutter head rotation, and the angle between the output cutter head and the driving shaft can be adjusted by rotating the third gear. The output cutter head has a large adjustment angle, a high degree of adaptability to complex operating environments, and meets the use requirements of complex environments, and the transmission ratio between the gears is accurate and the transmission efficiency is high.

[0016] The utility model also provides an electric screwdriver, which includes the above-mentioned screwdriver head and a driving assembly, wherein the output shaft of the driving assembly is connected to the driving shaft of the screwdriver head. The above-mentioned screwdriver head is adopted, and the angle of the output cutter head can be adjusted as needed, the adjustment angle of the output cutter head is large, the transmission efficiency is high, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 An exploded view of a screwdriver head provided in an embodiment of the utility model;

[0019] Figure 2 One of the use state diagrams of the screwdriver head provided by the embodiment of the utility model;

[0020] Figure 3 A second diagram of the use state of the screwdriver head provided by the embodiment of the utility model;

[0021] Figure 4 A cross-sectional view of a screwdriver head provided in an embodiment of the utility model;

[0022] Figure 5 A three-dimensional diagram of a screwdriver head provided in an embodiment of the utility model;

[0023] Figure 6 A state diagram of a locking button in a screwdriver head provided by an embodiment of the utility model being in a locking position;

[0024] Figure 7A state diagram of a locking button in a screwdriver head provided by an embodiment of the utility model being in an unlocked position;

[0025] Figure 8 A three-dimensional diagram of an electric screwdriver provided in an embodiment of the utility model.

[0026] Icons: 100-drive shaft; 200-first gear; 300-second gear; 400-third gear; 500-output cutter head; 600-protective housing; 601-adjusting slide groove; 700-transmission shaft; 800-gear rack; 801-fixing hole; 802-rotating groove; 803-limiting groove; 901-locking button; 903-connecting slide rod; 904-limiting protrusion; 602-mounting hole; 1000-dustproof plate; 804-protrusion; 1100-drive assembly. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0031] Example 1

[0032] The present embodiment provides a screwdriver head, which includes: a driving shaft 100, a first gear 200, a second gear 300, a third gear 400 and an output cutter head 500, the first gear 200 is arranged on the driving shaft 100, the second gear 300 is respectively meshed with the first gear 200 and the third gear 400, and the rotating shaft of the second gear 300 is perpendicular to the rotating shaft of the first gear 200, the output cutter head 500 is connected to the third gear 400, and the third gear 400 can rotate circumferentially around the rotating shaft of the second gear 300, so that the angle between the output cutter head 500 and the driving shaft 100 is adjustable.

[0033] Please refer to Figure 1 and Figure 4 As shown, in this embodiment, the first gear 200, the second gear 300 and the third gear 400 are all bevel gear structures, and the three gears are meshed in sequence to form a gear transmission mechanism. The first gear 200 is connected to a drive shaft 100, and an external drive device, such as a drive motor, can be connected through the drive shaft 100. The third gear 400 is connected to an output cutter head 500, and the output cutter head 500 is used to match an external nut. The drive shaft 100 rotates under the action of the external drive device, and the output cutter head 500 is driven to rotate through the first gear 200, the second gear 300 and the third transmission, thereby rotating the external screw. Among them, the rotating shaft of the second gear 300 is perpendicular to the rotating shaft of the first gear 200, and the third gear 400 can rotate circumferentially around the rotating shaft of the second gear 300, so that the angle between the output cutter head 500 and the drive shaft 100 can be adjusted as needed. It can be understood that when performing a screw rotation operation in some special operating spaces, a long straight screwdriver cannot complete the operation or the operation is difficult. At present, there are some screwdrivers with adjustable cutter head angles on the market, mainly including flexible universal shaft adjustment or multi-section universal joints to achieve transmission adjustment. However, both have certain defects, such as the small adjustment angle of the flexible universal shaft and the low transmission efficiency of the multi-section universal joint. The adjustable angle screwdriver head provided in this embodiment adopts three bevel gear transmission to ensure the output effect of the output cutter head 500 while adjusting the angle between the output cutter head 500 and the drive shaft 100 by rotating the third gear 400. The adjustment angle of the output cutter head 500 is large, which can easily meet the adjustment requirements of 0-90°, has a high adaptability to complex operating environments, and the transmission ratio between the gears is precise and the transmission efficiency is high.

[0034] Optionally, in some implementations of the present embodiment, the screwdriver head also includes a protective shell 600, the first gear 200, the second gear 300, and the third gear 400 are all arranged inside the protective shell 600, and an adjustment groove 601 is provided on the protective shell 600, the output cutter head 500 passes through the adjustment groove 601, and the output cutter head 500 can rotate along the adjustment groove 601.

[0035] Please refer to Figure 1 and Figure 4As shown, in this embodiment, the protective shell 600 has the effect of encapsulating and fixing the first gear 200, the second gear 300 and the third gear 400. On the one hand, the protective shell 600 ensures the stability of the first gear 200, the second gear 300 and the third gear 400, and prevents the gears from being disengaged and causing failure of normal transmission. On the other hand, the protective shell 600 can protect the internal gear structure, prevent the gears from being damaged by external impact or external foreign objects from getting stuck in the gears during maintenance and affecting the normal transmission of the gears. An adjustment slot 601 is provided on the protective shell 600, and the output cutter head 500 extends through the adjustment slot 601 to the outside of the protective shell 600, so as to facilitate the connection of the screws that need to be adjusted. The adjustment slot 601 is a long strip structure. When the angle of the output cutter head 500 needs to be adjusted, the output cutter head 500 slides along the adjustment slot 601. The adjustment slot 601 can fix and limit the output blade head 500, ensuring the stability of the output blade head 500 when it rotates, and preventing the output blade head 500 from adjusting the angle too large, which may cause a collision between the third gear 400 and the first gear 200. Figure 2 As shown, Figure 2 This is one of the use state diagrams of the screwdriver head provided in this embodiment. At this time, the output bit 500 and the drive shaft 100 are in the same straight line. Please refer to Figure 3 As shown, Figure 3 The second diagram of the use state of the screwdriver head provided in this embodiment. At this time, the output cutter head 500 is adjusted to form a 90° angle with the drive shaft 100. When in use, the operator can adjust the angle of the output cutter head 500 by rotating the output cutter head 500 along the adjustment slot 601 as needed, which is convenient and quick to operate.

[0036] Optionally, in some implementations of this embodiment, the screwdriver head also includes a transmission shaft 700, both ends of which are rotatably connected to the protective shell 600, and the transmission shaft 700 is perpendicular to the drive shaft 100, and the second gear 300 is arranged on the transmission shaft 700.

[0037] Optionally, in this embodiment, the number of the second gears 300 is two, and the two second gears 300 are symmetrically arranged on the transmission shaft 700 .

[0038] Please refer to Figure 1 As shown, in this embodiment, the transmission shaft 700 is used to fix the second gear 300 to ensure the stability of the second gear 300. Both ends of the transmission shaft 700 are connected to the protective housing 600, and the second gear 300 is rotatably arranged on the transmission shaft 700. When adjusting the output cutter head 500, the position of the second gear 300 is relatively fixed and only rotates around the transmission shaft 700. Please refer to Figure 1As shown, there are two second gears 300, which are symmetrically arranged on the transmission shaft 700, and the two second gears 300 are meshed with the first gear 200 and the third gear 400, and each second gear 300 can rotate independently. The two second gears 300 are arranged at intervals, and the first gear 200 and the third gear 400 are arranged between the two second gears 300. When the first gear 200 rotates, the two second gears 300 rotate in opposite directions, thereby driving the third gear 400 to rotate, and realizing the rotation output of the output cutter head 500. The first gear 200 and the third gear 400 are clamped by the two second gears 300, so as to improve the stability during transmission.

[0039] Optionally, in some implementations of the present embodiment, a gear rack 800 is rotatably arranged inside the protective shell 600, and the gear rack 800 is sleeved on the outside of the first gear 200, the second gear 300 and the third gear 400. A rotation groove 802 and a fixing hole 801 are respectively opened on the gear rack 800, and the drive shaft 100 is passed through the rotation groove 802, and the drive shaft 100 can rotate along the rotation groove 802. The output cutter head 500 is passed through the fixing hole 801 and extends to the outside of the gear rack 800. When the angle of the output cutter head 500 is adjusted, the output cutter head 500 rotates synchronously with the gear rack 800.

[0040] Please refer to Figure 1 and Figure 4 As shown, in this embodiment, a cylindrical mounting cavity is provided inside the protective housing 600, and the gear wheel frame is provided in a cylindrical shape, which is adapted to the shape and size of the mounting cavity of the protective housing 600. The gear is provided inside the protective housing 600, and the gear frame 800 rotates coaxially with the second gear 300. A fixing hole 801 for fixing the output cutter head 500 is provided on the gear frame 800, and the output cutter head 500 passes through the fixing hole 801. When adjusting the angle of the output cutter head 500, the output cutter head 500 drives the gear frame 800 to transmit synchronously, and under the limiting effect of the gear frame 800, the output cutter head 500 can rotate stably. It can be understood that the output cutter head 500 is meshed with the second gear 300 through the third gear 400, and the angle of the output cutter head 500 can be adjusted, but the third gear 400 is easy to disengage during adjustment, so the gear frame 800 is provided to assist in fixing. A rotating groove 802 is also provided on the gear frame 800, and the rotating groove 802 is used to avoid the drive shaft 100. It can be understood that the gear frame 800 and the output cutter head 500 rotate synchronously, and a rotation groove 802 needs to be provided to avoid the drive shaft 100 to prevent the gear frame 800 and the drive shaft 100 from colliding and interfering with each other.

[0041] Optionally, in some implementations of this embodiment, a locking assembly is further provided inside the protective shell 600, a limiting slot 803 is provided on the gear rack 800, the locking assembly has a locking position engaged with the limiting slot 803 and an unlocking position disengaged from the limiting slot 803, and the locking assembly is driven to switch between the locking position and the unlocking position.

[0042] In this embodiment, a plurality of limiting grooves 803 can be provided on the outer wall of the gear rack 800 as required. Since the gear rack 800 is configured as a columnar structure, the limiting grooves 803 are provided at intervals along a certain angle, corresponding to the rotation angle of the output cutter head 500, so that the output cutter head 500 can be fixed at a specific angle, such as rotating 30, 60 degrees or 90 degrees. The locking assembly can be inserted into and disengaged from the limiting groove 803, thereby locking and unlocking the gear rack 800. The gear rack 800 rotates synchronously with the output cutter head 500. When the gear rack 800 is locked, the output cutter head 500 is also locked. At this time, the angle cannot be adjusted, so as to avoid the angle of the output cutter head 500 from rotating arbitrarily without control during operation.

[0043] Optionally, in some embodiments of the present embodiment, the locking assembly includes a locking button 901 and a return spring, the locking button 901 is provided with a connecting slide rod 903 and a limiting protrusion 904, the protective shell 600 is provided with a mounting hole 602, the connecting slide rod 903 is slidably set in the mounting hole 602, the locking button 901 can slide along the length direction of the connecting slide rod 903, and when the locking button 901 slides, the limiting protrusion 904 can be stuck in or out of the limiting groove 803, and the return spring is sleeved on the connecting slide rod 903, so that the locking button 901 has a tendency to reset to the locking position.

[0044] Please refer to Figure 1 and Figure 5 As shown, in this embodiment, the locking assembly includes a locking button 901 and a return spring, and the locking button 901 is slidably arranged inside the protective housing 600 through a connecting slide rod 903. An opening is provided on the protective housing 600, and part of the locking button 901 is exposed from the opening of the protective housing 600, so that the operator can press the locking button 901. A limiting protrusion 904 is provided on the locking button 901, and the limiting protrusion 904 can be clamped in the limiting groove 803 on the gear frame 800, thereby limiting and locking the gear frame 800. When the limiting protrusion 904 is clamped in the limiting groove 803, the locking button 901 is in a locking position, and the angle of the gear frame 800 and the output cutter head 500 is locked and cannot be adjusted. On the contrary, when the limiting protrusion 904 is separated from the limiting groove 803, the locking button 901 is in an unlocking position, and the gear frame 800 can rotate freely, thereby adjusting the angle of the output cutter head 500. A return spring is provided on the connecting slide bar 903, and the return spring provides elastic force so that the locking button 901 tends to return to the locking position. Figure 6 As shown, Figure 6 The locking button 901 provided in this embodiment is in the locked position. At this time, the limiting protrusion 904 is locked in any limiting groove 803. Figure 7 As shown, Figure 7 The state diagram of the locking button 901 provided for this embodiment is in the unlocked position, at which time the limiting protrusion 904 is disengaged from the limiting groove 803, and the reset spring is compressed, so that the locking button 901 has a tendency to reset to the locked position. When in use, the locking button 901 is in the locked position. When the angle of the output blade 500 needs to be adjusted, the operator presses the locking button 901 to disengage the limiting protrusion 904 from the limiting groove 803, and then rotates the output blade 500 to adjust the angle. After adjusting to a specific angle, the other limiting groove 803 is aligned with the limiting protrusion 904. At this time, the operator releases the locking button 901, and the locking button 901 is reset under the action of the reset spring, and the limiting protrusion 904 is snapped into the corresponding limiting groove 803 and locked again.

[0045] Optionally, in some implementations of this embodiment, a dustproof component is disposed inside the protective shell 600 , and the dustproof component is disposed between the protective shell 600 and the gear rack 800 to shield the adjustment slide slot 601 .

[0046] Please refer to Figure 1 As shown, since an adjustment slot 601 is provided on the protective shell 600, and a rotation slot 802 is provided on the gear rack 800. And in order to ensure that the adjustment angle of the output cutter head 500 meets the requirements, the adjustment slot 601 and the rotation slot 802 need to reach a certain length. Therefore, when the gear rack 800 is adjusted to a certain angle, the adjustment slot 601 may be aligned with the rotation slot 802 to form an opening, and external foreign matter may enter the interior of the gear rack 800, affecting the meshing transmission of the gears. Therefore, a dustproof component is provided between the protective shell 600 and the gear rack 800 to cover the opening and prevent external foreign matter from entering.

[0047] Optionally, in some implementations of the present embodiment, the dustproof assembly includes a dustproof plate 1000, which is slidably disposed between the protective shell 600 and the gear rack 800. The outer wall of the gear rack 800 is provided with a protrusion 804, which can abut against the dustproof plate 1000. When adjusting the angle of the output cutter head 500, the protrusion 804 can push the dustproof plate 1000 to slide along the adjustment groove 601.

[0048] Please refer to Figure 4 and Figure 5As shown, in this embodiment, the dustproof plate 1000 is an arc-shaped plate, which is arranged between the protective housing 600 and the gear frame 800. When adjusting the angle of the output blade head 500, the protrusion 804 can push the dustproof plate 1000 to slide along the adjustment slide groove 601, thereby shielding the adjustment slide groove 601 and blocking external foreign matter without affecting the normal adjustment angle of the output blade head 500.

[0049] Example 2

[0050] This embodiment provides an electric screwdriver, which includes the above-mentioned screwdriver head and a driving assembly 1100, wherein the output shaft of the driving assembly 1100 is connected to the driving shaft 100 of the screwdriver head.

[0051] Please refer to Figure 8 As shown, the drive assembly 1100 is connected to the drive shaft 100 of the screwdriver head, and the output bit 500 of the screwdriver head is driven to rotate by the drive assembly 1100, thereby tightening or loosening the screw. When in use, the angle of the output bit 500 of the screwdriver head can be adjusted according to needs, and the adjustment angle is large, which meets the use needs of various complex environments and is highly practical.

[0052] In summary, the utility model provides a screwdriver head, which includes: a drive shaft 100, a first gear 200, a second gear 300, a third gear 400 and an output cutter head 500, wherein the first gear 200 is arranged on the drive shaft 100, the second gear 300 is meshed with the first gear 200 and the third gear 400 respectively, and the rotating shaft of the second gear 300 is perpendicular to the rotating shaft of the first gear 200, the output cutter head 500 is connected to the third gear 400, and the third gear 400 can rotate circumferentially around the rotating shaft of the second gear 300, so that the angle between the output cutter head 500 and the drive shaft 100 is adjustable. Through the transmission of three bevel gears, while ensuring the output effect of the output cutter head 500, the angle between the output cutter head 500 and the drive shaft 100 can be adjusted by rotating the third gear 400. The output cutter head 500 has a large adjustment angle, a high degree of adaptability to complex operating environments, and meets the use requirements of complex environments, and the transmission ratio between the gears is accurate and the transmission efficiency is high.

[0053] The utility model also provides an electric screwdriver, which includes the above-mentioned screwdriver head and a driving assembly 1100, wherein the output shaft of the driving assembly 1100 is connected to the driving shaft 100 of the screwdriver head. The above-mentioned screwdriver head is adopted, and the angle of the output cutter head 500 can be adjusted as needed, the adjustment angle of the output cutter head 500 is large, the transmission efficiency is high, and the use effect is good.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A screwdriver head, characterized in that: include: A driving shaft (100), a first gear (200), a second gear (300), a third gear (400) and an output cutter head (500), wherein the first gear (200) is arranged on the driving shaft (100), the second gear is respectively meshed with the first gear and the third gear, and the rotating shaft of the second gear (300) is perpendicular to the rotating shaft of the first gear (200), the output cutter head (500) is connected to the third gear (400), and the third gear (400) can rotate around the rotating shaft of the second gear (300), so that the angle between the output cutter head (500) and the driving shaft (100) is adjustable.

2. The screwdriver head according to claim 1, characterized in that The screwdriver head also includes a protective shell (600), the first gear (200), the second gear (300), and the third gear (400) are all arranged inside the protective shell (600), and an adjustment slide groove (601) is arranged on the protective shell (600), and the output cutter head (500) passes through the adjustment slide groove (601), and the output cutter head (500) can rotate along the adjustment slide groove (601).

3. The screwdriver head according to claim 2, characterized in that: The screwdriver head also includes a transmission shaft (700), both ends of which are rotatably connected to the protective shell, and the transmission shaft (700) and the drive shaft (100) are perpendicular to each other, and the second gear (300) is arranged on the transmission shaft (700).

4. The screwdriver bit according to claim 3, characterized in that: The number of the second gears (300) is two, and the two second gears (300) are symmetrically arranged on the transmission shaft (700).

5. The screwdriver bit according to claim 2, characterized in that: A gear rack (800) is rotatably arranged inside the protective shell, and the gear rack is sleeved on the outside of the first gear, the second gear and the third gear. A rotation groove (802) and a fixing hole (801) are respectively opened on the gear rack (800). The drive shaft (100) is inserted into the rotation groove (802), and the drive shaft (100) can rotate along the rotation groove (802). The output cutter head (500) is inserted into the fixing hole (801) and extends to the outside of the gear rack (800). When the angle of the output cutter head (500) is adjusted, the output cutter head (500) rotates synchronously with the gear rack (800).

6. The screwdriver bit according to claim 5, characterized in that: A locking assembly is also provided inside the protective shell (600), a limiting groove (803) is provided on the gear frame (800), the locking assembly has a locking position engaged with the limiting groove (803) and an unlocking position disengaged from the limiting groove (803), and the locking assembly is driven to switch between the locking position and the unlocking position.

7. The screwdriver bit according to claim 6, characterized in that The locking assembly comprises a locking button (901) and a reset spring. The locking button (901) is provided with a connecting slide bar (903) and a limiting protrusion (904). The protective shell is provided with a mounting hole (602). The connecting slide bar (903) is slidably arranged in the mounting hole (602). The locking button (901) can slide along the length direction of the connecting slide bar (903). When the locking button (901) slides, the limiting protrusion (904) can be inserted into or disengaged from the limiting groove (803). The reset spring is sleeved on the connecting slide bar (903), so that the locking button (901) has a tendency to reset to a locking position.

8. The screwdriver bit according to claim 5, characterized in that A dustproof component is provided inside the protective shell, and the dustproof component is arranged between the protective shell (600) and the gear rack (800) and is used to shield the adjustment slide groove (601).

9. The screwdriver bit according to claim 8, characterized in that The dustproof assembly comprises a dustproof plate (1000), and the dustproof plate (1000) is slidably arranged between the protective shell (600) and the gear rack (800). The outer wall of the gear rack (800) is provided with a protrusion (804), and the protrusion (804) can abut against the dustproof plate (1000). When adjusting the angle of the output blade head (500), the protrusion (804) can push the dustproof plate (1000) to slide along the adjustment slide groove (601).

10. An electric screwdriver, characterized in that: It comprises a screwdriver head and a drive assembly (1100) as claimed in any one of claims 1 to 9, wherein the output shaft of the drive assembly (1100) is connected to the drive shaft (100) of the screwdriver head.

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