Variable-angle offset rotating shaft screwdriver

Abstract

The utility model relates to a variable-angle offset rotating shaft screwdriver, in particular to the technical field of screwdrivers. A variable-angle offset rotating shaft screwdriver comprises a driving assembly, an output tool bit, a rotating mechanism and an offset transmission assembly, the input end of the rotating mechanism is in driving fit with an output shaft of the driving assembly, the output end of the rotating mechanism is in driving fit with the offset transmission assembly, and the output tool bit is in driving connection with the offset transmission assembly. According to the variable-angle screwdriver with the offset rotating shaft, the output tool bit can be installed through the offset transmission assembly, the output tool bit and the driving assembly are offset, and the included angle between the output tool bit and the output shaft of the driving assembly is adjusted in cooperation with the rotating mechanism, so that the output tool bit extends into a narrow gap, and the operation requirement under the special environment is met; and the practicability of the variable-angle offset rotating shaft screwdriver is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of screwdrivers, in particular to a variable-angle offset rotating shaft screwdriver. BACKGROUND

[0002] Screwdrivers are common tools in life. The output shaft of the existing screwdriver is generally located at the shaft center and is in the same straight line with the output bit. When facing narrow space and very common use position assembly requirements, the operation may be limited due to obstruction, which not only affects the operation efficiency, but also may cause safety accidents when the screw cannot be rotated to the position. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a variable-angle offset rotating shaft screwdriver to solve the above technical problems.

[0004] The utility model discloses a variable-angle offset rotating shaft screwdriver, which comprises a driving assembly, an output bit, a rotating mechanism and an offset transmission assembly. The input end of the rotating mechanism is drivingly connected with the output shaft of the driving assembly. The output end of the rotating mechanism is drivingly connected with the offset transmission assembly. The output bit is drivingly connected with the offset transmission assembly. The offset transmission assembly is used to adjust the distance between the output bit and the output shaft of the driving assembly, so that the output bit is offset to the side of the output shaft of the driving assembly. The rotating mechanism is used to adjust the included angle between the output bit and the output shaft of the driving assembly.

[0005] Optionally, the offset transmission assembly comprises a fixed shell, an input shaft and an output shaft which are arranged in parallel and at intervals on the fixed shell, and transmission gears which are arranged on the input shaft and the output shaft and are in mesh with each other. The output shaft of the driving assembly is connected with the input shaft. The output bit is connected with the output shaft.

[0006] Optionally, the rotating mechanism comprises a protective shell, a first bevel gear, a second bevel gear and a third bevel gear. The inside of the protective shell is provided with a mounting shaft. The output shaft of the driving assembly and the output bit are perpendicular to the mounting shaft. The first bevel gear is arranged on the output shaft of the driving assembly. The second bevel gear is arranged on the mounting shaft. The third bevel gear is drivingly connected with the first transmission gear. The first bevel gear, the second bevel gear and the third bevel gear are in mesh in sequence. An adjusting opening is formed in the protective shell. The offset transmission assembly extends to the inside of the protective shell through the adjusting opening. The input shaft is fixedly connected with the third bevel gear. The third bevel gear can rotate circumferentially around the mounting shaft, so that the offset transmission assembly and the output bit rotate along the adjusting opening to adjust the included angle between the output bit and the output shaft of the driving assembly.

[0007] Optionally, the fixed shell has a rotating part in the shape of a ring. A rotating groove is formed in the protective shell. The rotating part is clamped in the rotating groove.

[0008] Optionally, the rotating mechanism further comprises a locking mechanism, the locking mechanism comprises a limiting buckle, a plurality of locking grooves are circumferentially spaced apart on the rotating part, the limiting buckle has a locking position for clamping in the locking grooves and an unlocking position for being separated from the locking grooves, and the limiting buckle is driven to switch between the locking position and the unlocking position.

[0009] Optionally, a switching button is arranged on the protective shell, the switching button is in driving connection with the limiting buckle, and the switching button is used to drive the limiting buckle.

[0010] Optionally, an elastic member is arranged on the mounting shaft, the elastic member is connected with the limiting buckle, and the elastic member is used to drive the limiting buckle to reset to the locking position.

[0011] Optionally, a dustproof plate is arranged on the adjusting opening, and the dustproof plate is used to shield the adjusting opening.

[0012] Optionally, the protective shell comprises a first shell and a second shell arranged symmetrically, fixing screw holes are arranged on the first shell and the second shell, studs are arranged in the fixing screw holes, and the first shell and the second shell are detachably connected through the studs.

[0013] Optionally, the driving assembly comprises a driving motor and a speed reducer, and a rotating shaft of the driving motor is in driving connection with the biasing transmission assembly through the speed reducer.

[0014] The utility model provides a variable angle biasing rotating shaft screwdriver, it includes: driving assembly, output bit, rotating mechanism and biasing transmission assembly. Can install output bit through biasing transmission assembly, make output bit with driving assembly bias, cooperate rotating mechanism and adjust the included angle between output bit and the output shaft of driving assembly, thereby output bit is inserted into the narrow crack, adapts the operation requirement under special environment, has improved the practicality of variable angle biasing rotating shaft screwdriver. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the embodiment of the present application, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0016] Figure 1 The cross-sectional view of the biasing transmission assembly of the variable angle biasing rotating shaft screwdriver provided in the embodiment of the present application is provided.

[0017] Figure 2 The use state diagram of the screwdriver in the prior art provided in the embodiment of the present application is provided.

[0018] Figure 3 One of the usage state diagrams of the variable angle offset shaft screwdriver provided in the embodiments of this application;

[0019] Figure 4 This is the second usage diagram of the variable angle offset shaft screwdriver provided in the embodiments of this application;

[0020] Figure 5 An exploded view of the variable angle offset shaft screwdriver provided in the embodiments of this application.

[0021] Icons: 100-Output cutter head; 200-Offset transmission assembly; 201-Fixed housing; 202-Input shaft; 203-Output shaft; 204-Transmission gear; 300-Rotating mechanism; 301-Protective housing; 302-First bevel gear; 303-Second bevel gear; 304-Third bevel gear; 305-Mounting shaft; 3011-Adjustment port; 2011-Rotating part; 3012-Rotating groove; 400-Locking mechanism; 401-Limit buckle; 402-Locking groove; 403-Switching button; 404-Elastic element; 500-Dustproof plate; 3013-First housing; 3014-Second housing; 3015-Stud; 600-Motor; 700-Reduction gearbox. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] This embodiment provides a variable angle offset shaft screwdriver, which includes: a drive assembly, an output screwdriver head 100, and an offset transmission assembly 200. The offset transmission assembly 200 includes a fixed housing 201, on which an input shaft 202 and an output shaft 203 are arranged parallel and spaced apart. The input shaft 202 and the output shaft 203 are provided with mutually meshing transmission gears 204. The output shaft of the drive assembly is connected to the input shaft 202, and the output screwdriver head 100 is connected to the output shaft 203. The offset transmission assembly 200 is used to adjust the distance between the output screwdriver head 100 and the output shaft of the drive assembly so that the output screwdriver head 100 is offset to the periphery of the output shaft of the drive assembly.

[0026] Please refer to Figure 1 and Figure 5 The drive assembly can be a manual or electric drive tool used to drive the output cutter head 100 to rotate, thereby rotating bolts, nuts, and other parts. Please refer to... Figure 2As shown, in related technologies, the output shaft of the drive assembly is usually directly connected to the output head 100, and the output head 100 and the output shaft of the drive assembly are on the same straight line. This can lead to situations where such screwdrivers may not be able to complete the operation or are inconvenient to operate in some confined spaces or when operating on parts at corners. In this embodiment, the output head 100 is mounted by an offset transmission assembly 200. While ensuring that the drive assembly can drive the output head 100 to rotate normally, the output head 100 is offset from the output shaft of the drive assembly. The offset output head 100 is easier to extend into confined spaces for operation, solving the problem of inconvenience in special environments. Specifically, the offset transmission assembly 200 includes a fixed housing 201 and an input shaft 202 and an output shaft 203 that are parallel and spaced apart on the fixed housing 201. The input shaft 202 is connected to the output shaft of the drive assembly, and the output shaft 203 is connected to the output head 100, realizing the separation and offset of the head from the drive assembly. The input shaft 202 and output shaft 203 are each equipped with a transmission gear 204, which mesh with each other to transmit power from the drive assembly to the output screwdriver head 100, causing the output screwdriver head 100 to rotate and thus perform screw installation or removal operations. The output screwdriver head 100 is mounted via an offset transmission assembly 200, which offsets the output screwdriver head 100 from the drive assembly, thereby adapting to operational requirements in special environments and improving the practicality of the variable angle offset shaft screwdriver.

[0027] Optionally, in some possible embodiments, the drive assembly includes a rotating mechanism 300, the output shaft of the drive assembly being driven to engage with the first transmission gear 204 of the bias transmission assembly 200 via the rotating mechanism 300, and the rotating mechanism 300 being used to adjust the angle between the output cutter head 100 and the output shaft of the drive assembly.

[0028] Please refer to Figure 3 and Figure 4 The rotating mechanism 300 rotates synchronously with the output screwdriver head 100. The angle between the output screwdriver head 100 and the output shaft of the drive assembly can be adjusted by rotating the rotating mechanism 300. It is understandable that in some special operating spaces, a long, straight screwdriver is insufficient or difficult to use. For example, in confined spaces with obstructions, a straight screwdriver is inconvenient or impossible to use; in such cases, an L-shaped screwdriver is more convenient. The variable angle offset rotating shaft screwdriver provided in this embodiment can offset the output screwdriver head 100 via the offset transmission assembly 200 and adjust the angle of the output screwdriver head 100 via the rotating mechanism 300. These two mechanisms work together to adapt to various complex adjustments and meet operational needs under different adjustment conditions.

[0029] Optionally, in some possible embodiments, the rotating mechanism 300 includes a protective housing 301, a first bevel gear 302, a second bevel gear 303, and a third bevel gear 304. A mounting shaft 305 is disposed inside the protective housing 301. The output shaft of the drive assembly and the output cutter head 100 are both perpendicular to the mounting shaft 305. The first bevel gear 302 is disposed on the output shaft of the drive assembly, the second bevel gear 303 is disposed on the mounting shaft 305, and the third bevel gear 304 is drivenly connected to the first transmission gear 204. Gear 302, second bevel gear 303 and third bevel gear 304 mesh in sequence. An adjustment port 3011 is provided on the protective housing 301. The bias transmission assembly 200 extends into the interior of the protective housing 301 through the adjustment port 3011. The input shaft 202 is fixedly connected to the third bevel gear 304. The third bevel gear 304 can rotate circumferentially around the mounting shaft 305, so that the bias transmission assembly 200 and the output cutter head 100 rotate along the adjustment port 3011 to adjust the included angle between the output cutter head 100 and the output shaft of the drive assembly.

[0030] Please refer to Figure 5 The protective housing serves two purposes: firstly, it encapsulates the gears, creating a relatively closed environment to protect the gear transmission structure; secondly, it acts as a mounting bracket, supporting the mounting shaft 305 and other structures, and limiting the gears to ensure stability during transmission and smoothness during the adjustment of the third bevel gear 304. This prevents gears from falling off, being damaged by external impacts, or foreign objects from getting stuck in the gears, thus ensuring normal transmission during maintenance. The first bevel gear 302, the second bevel gear 303, and the third bevel gear 304 mesh sequentially to form a gear transmission mechanism, ensuring that the drive assembly can rotate the output cutter head 100. The second bevel gear 303 is fixed to the mounting shaft 305, and the third bevel gear 304 can rotate circumferentially along the mounting shaft 305 during meshing with the second bevel gear 303, thereby driving the off-axis transmission assembly connected to the third bevel gear 304 to rotate. An adjustment port 3011 is provided on one side of the protective housing 301, facilitating the extension of the off-axis transmission assembly 200 to the outside of the protective housing 301 to connect to the output cutter head 100. On the other hand, the adjustment port 3011 has a strip-shaped structure, forming an adjustment groove. This ensures the smooth rotation of the offset transmission assembly 200 while also acting as a limit, preventing damage to the output cutter head 100 due to excessive rotation angle. The adjustment angle of the output cutter head 100, as well as the opening size and actual length of the adjustment port 3011, are selected during production according to actual needs. This embodiment does not impose any limitations on these aspects. Figure 3 and Figure 4 This only represents one embodiment where the output cutter head 100 rotates 90 degrees. In other embodiments, the output cutter head 100 may also rotate 180 degrees (90 degrees on each side) or 270 degrees, etc.

[0031] Optionally, in some possible embodiments, the fixed housing 201 has an annular rotating part 2011, and the protective housing 301 has a rotating groove 3012, in which the rotating part 2011 is engaged.

[0032] Please refer to Figure 5 The protective housing 301 is provided with an annular rotating groove 3012, and the fixed housing 201 is correspondingly provided with an annular rotating part 2011. The rotating part 2011 is engaged in the rotating groove 3012, thereby rotatably connecting the protective housing 301 and the fixed housing 201, so that the bias transmission assembly 200 and the drive assembly form an integral structure. The rotating groove 3012 and the rotating part 2011 cooperate with each other to play a limiting role, ensuring the stability of the bias transmission assembly 200 during rotation adjustment.

[0033] Optionally, in some possible embodiments, the rotating mechanism 300 further includes a locking mechanism 400, which includes a limit buckle 401. The rotating part 2011 is provided with a plurality of locking grooves 402 spaced apart circumferentially. The limit buckle 401 has a locking position that is engaged in the locking groove 402 and an unlocking position that is disengaged from the locking groove 402. The limit buckle 401 is driven to switch between the locking position and the unlocking position.

[0034] Please refer to Figure 5 The limiting buckle 401 is slidably mounted on the mounting shaft 305. The rotating part 2011 has several circumferentially spaced locking grooves 402, with equal intervals between them, corresponding to the rotation angle of the output cutter head 100, allowing the output cutter head 100 to be fixed at a specific angle, such as 30°, 60°, or 90°. The limiting buckle 401 has a protruding portion that matches the shape and size of the locking groove 402. When the protruding portion of the limiting buckle 401 is engaged in the locking groove 402, the rotating part 2011 cannot rotate freely, thus keeping the output cutter head 100 at a fixed angle. Conversely, when the limiting buckle 401 disengages from the locking groove 402, the rotating part 2011 can rotate freely, thereby adjusting the angle of the output cutter head 100. The operator can drive the limit buckle 401 to switch between the locked and unlocked positions, thereby fixing the output cutter head 100 during use and preventing the output cutter head 100 from rotating uncontrollably during operation, which would affect the operating effect.

[0035] Optionally, in some possible embodiments, a switching button 403 is provided on the protective housing 301, the switching button 403 is drivenly connected to the limit buckle 401, and the switching button 403 is used to drive the limit buckle 401. An elastic element 404 is provided on the mounting shaft 305, the elastic element 404 is connected to the limit buckle 401, and the elastic element 404 is used to drive the limit buckle 401 to reset to the locked position.

[0036] Please refer to Figure 5The switching button 403 and the elastic element 404 are respectively located on both sides of the limit buckle 401. Initially, the limit buckle 401 is in the locked position. When the angle of the output cutter head 100 needs to be adjusted, pressing the switching button 403 disengages the limit buckle 401 from the locking groove 402, unlocking the output cutter head 100, allowing it to rotate freely. When the output cutter head 100 rotates to the appropriate angle, releasing the switching button 403 causes the limit buckle 401 to return to the locked position under the elastic force of the elastic element 404, thus locking the angle of the output cutter head 100 and ensuring its stability during subsequent operations. During screw rotation, the limit buckle 401 remains in the locked position under the action of the elastic element 404, preventing the output cutter head 100 from rotating. This eliminates the need for the operator to continuously press the switching button 403, ensuring convenience and stability during operation.

[0037] Optionally, in some possible embodiments, a dustproof plate 500 is provided over the adjustment port 3011 to cover the adjustment port 3011.

[0038] Please refer to Figure 5 The dustproof baffle is slidably disposed between the protective shell and the fixed shell 201. The fixed shell 201 has a protruding structure that can abut against the dustproof baffle 500. When the angle of the output blade 100 is adjusted, the fixed shell 201 can drive the dustproof baffle 500 to rotate along the adjustment port 3011, thereby blocking the adjustment port 3011 exposed by the rotation of the offset transmission component 200, preventing foreign objects from entering the interior and damaging the gear structure, and ensuring the service life of the variable angle offset shaft screwdriver.

[0039] Optionally, in some possible embodiments, the protective housing 301 includes a first housing 3013 and a second housing 3014 arranged symmetrically. The first housing 3013 and the second housing 3014 are provided with fixing screw holes, and studs 3015 are inserted through the fixing screw holes. The first housing 3013 and the second housing 3014 are detachably connected by studs 3015.

[0040] The protective housing 301 includes a symmetrically arranged first housing 3013 and a second housing 3014. Separate machining reduces production difficulty and facilitates the installation of structures such as the first bevel gear 302, the second bevel gear 303, the third bevel gear 304, and the locking mechanism 400. The first housing 3013 and the second housing 3014 are fixed together by studs 3015 to ensure connection strength. Besides protecting the internal structure, the protective housing 301 also limits and supports the output cutter head 100 and the rotating mechanism 300, providing reinforcement and thus achieving higher torque output.

[0041] Optionally, in some possible embodiments, the drive assembly includes a drive motor 600 and a reduction gearbox 700, with the shaft of the drive motor 600 connected to the offset transmission assembly 200 via the reduction gearbox 700. Driving the output cutter head 100 via the drive motor 600 and the reduction gearbox 700 improves operating efficiency, increases operating accuracy, and ensures the stability of screw installation.

[0042] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0043] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A variable angle offset pivot screwdriver, characterized in that, include: The system comprises a drive assembly, an output cutter head (100), a rotating mechanism (300), and an offset transmission assembly (200). The input end of the rotating mechanism (300) is driven to engage with the output shaft of the drive assembly, and the output end of the rotating mechanism (300) is driven to engage with the offset transmission assembly (200). The output cutter head (100) is driven to connect with the offset transmission assembly (200). The offset transmission assembly (200) is used to adjust the distance between the output cutter head (100) and the output shaft of the drive assembly so that the output cutter head (100) is offset to the periphery of the output shaft of the drive assembly. The rotating mechanism (300) is used to adjust the angle between the output cutter head (100) and the output shaft of the drive assembly.

2. The variable angle offset pivot screwdriver according to claim 1, characterized in that, The bias transmission assembly (200) includes a fixed housing (201), an input shaft (202) and an output shaft (203) arranged parallel to each other and spaced apart on the fixed housing (201), and transmission gears (204) meshing with each other are provided on the input shaft (202) and the output shaft (203). The output shaft of the drive assembly is connected to the input shaft (202), and the output cutter head (100) is connected to the output shaft (203).

3. The variable angle offset pivot screwdriver according to claim 2, characterized in that, The rotating mechanism (300) includes a protective housing (301), a first bevel gear (302), a second bevel gear (303), and a third bevel gear (304). A mounting shaft (305) is disposed inside the protective housing (301). The output shaft of the drive assembly and the output cutter head (100) are both perpendicular to the mounting shaft (305). The first bevel gear (302) is mounted on the output shaft of the drive assembly, the second bevel gear (303) is mounted on the mounting shaft (305), and the third bevel gear (304) is drivenly connected to the transmission gear (204). The first bevel gear (302) and the second bevel gear... (303) and the third bevel gear (304) mesh in sequence. An adjustment port (3011) is provided on the protective housing (301). The bias transmission assembly (200) extends into the interior of the protective housing (301) through the adjustment port (3011). The input shaft (202) is fixedly connected to the third bevel gear (304). The third bevel gear (304) can rotate circumferentially around the mounting shaft (305) so that the bias transmission assembly (200) and the output cutter head (100) rotate along the adjustment port (3011) to adjust the included angle between the output cutter head (100) and the output shaft of the drive assembly.

4. The variable angle offset pivot screwdriver according to claim 3, characterized in that, The fixed housing (201) has an annular rotating part (2011), and the protective housing (301) has a rotating groove (3012) on it, and the rotating part (2011) is engaged in the rotating groove (3012).

5. The variable angle offset pivot screwdriver according to claim 4, characterized in that, The rotating mechanism (300) further includes a locking mechanism (400), which includes a limiting buckle (401). The rotating part (2011) is provided with a plurality of locking grooves (402) spaced apart in a circumferential direction. The limiting buckle (401) has a locking position that is engaged with the locking groove (402) and an unlocking position that is disengaged from the locking groove (402). The limiting buckle (401) is driven to switch between the locking position and the unlocking position.

6. The variable angle offset pivot screwdriver according to claim 5, characterized in that, A switching button (403) is provided on the protective housing (301). The switching button (403) is drivenly connected to the limit buckle (401). The switching button (403) is used to drive the limit buckle (401).

7. The variable angle offset pivot screwdriver according to claim 5, characterized in that, An elastic element (404) is provided on the mounting shaft (305). The elastic element (404) is connected to the limiting buckle (401). The elastic element (404) is used to drive the limiting buckle (401) to reset to the locking position.

8. The variable angle offset pivot screwdriver according to any one of claims 3-7, characterized in that, A dustproof plate (500) is provided over the adjustment port (3011) to cover the adjustment port (3011).

9. The variable angle offset pivot screwdriver according to any one of claims 3-7, characterized in that, The protective housing (301) includes a first housing (3013) and a second housing (3014) arranged symmetrically. The first housing (3013) and the second housing (3014) are provided with fixing screw holes, and studs (3015) are inserted through the fixing screw holes. The first housing (3013) and the second housing (3014) are detachably connected by the studs (3015).

10. The variable angle offset pivot screwdriver according to claim 1, characterized in that, The drive assembly includes a drive motor (600) and a gearbox (700), and the shaft of the drive motor (600) is driven to the bias transmission assembly (200) via the gearbox (700).

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