Multi-bit screwdriver

Abstract

The utility model belongs to tool technical field discloses a kind of multi-head screwdrivers. Multiple head subassemblies in multi-head screwdriver are all received in the inside of shell, compared with multiple heads in prior art are carried by user dispersively or received by means of additional tool, the utility model proposed multi-head screwdriver improves the convenience of head subassembly and the structural integrity of multiple head subassemblies and shell, avoids the loss risk of head subassembly. Multiple head subassemblies are arranged in shell, improve the applicability of multi-head screwdriver to different model screw screwing operation, enhance the scene versatility of multi-head screwdriver. Head body can be realized by the sliding process of adjusting component in the extension process in shell, enhance the use convenience of head body. Head body is connected with elastic part, by the elastic deformation capacity of elastic part, reduce the risk of jam when head body extends or retracts shell, improve the use reliability of head body.

Description

Technical Field

[0001] This utility model relates to the field of tool technology, and in particular to a multi-bit screwdriver. Background Technology

[0002] Screwdrivers are common tools used for tightening screws. Common screwdrivers typically have a one-piece fixed structure, meaning the screwdriver bit is fixedly connected to the shank, offering high stability and ease of operation. However, one-piece fixed screwdrivers only come with a single type of bit, making them difficult to adapt to tightening various screw sizes, resulting in poor versatility.

[0003] To improve the versatility of screwdrivers, some related technologies have proposed modular screwdrivers, which combine the screwdriver bit and handle separately and then assemble them, allowing users to change to different types of screwdriver bits as needed. However, to meet different tightening needs, users need to carry multiple screwdriver bits with them, which not only presents storage inconvenience but also easily leads to the loss of bits.

[0004] Therefore, there is an urgent need to develop a multi-head screwdriver to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-bit screwdriver that improves storage convenience and ease of use, and enhances the versatility of the multi-bit screwdriver in various scenarios.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model proposes a multi-bit screwdriver, comprising: a housing, with an opening at one end along its own axial direction and multiple circumferentially spaced grooves at the other end, each groove extending along the axial direction of the housing; multiple bit assemblies, spaced apart within the housing, each bit assembly including a first connector, an elastic part, and a bit body connected in sequence, the first connector being slidably disposed within the housing; and multiple adjusting components, each corresponding to a first connector, each adjusting component corresponding to a groove and slidably engaged, the adjusting components being able to drive the first connector to slide synchronously, causing the bit body to extend or retract into the housing through the opening.

[0008] Optionally, the multi-head screwdriver also includes a mounting bracket, which is fixedly installed inside the housing and has multiple mounting channels spaced apart along its circumference. Each mounting channel extends along the axial direction of the housing, and the first connector is slidably installed in the mounting channel in a corresponding manner.

[0009] Optionally, each adjustment component includes a second connector and an elastic member. The second connector is connected to the first connector, and the elastic member is sleeved on the outside of the second connector and abuts against the top wall of the mounting bracket. Each second connector has a locking protrusion on the side near the housing axis. The two opposite outer walls of the locking protrusion are respectively provided with a first abutment and a second abutment. When any bit body extends out of the opening, its corresponding second abutment can abut against the corresponding first abutment of other bit bodies.

[0010] Optionally, an adjustment guide surface is provided on the side of the first abutting part away from the second abutting part and / or on the side of the second abutting part away from the first abutting part, and the adjustment guide surface is set at an angle to the axial direction of the housing.

[0011] Optionally, a flexible anti-slip element may be provided on the side of the first abutting portion away from the second abutting portion and / or on the side of the second abutting portion away from the first abutting portion.

[0012] Optionally, each adjustment component also includes an adjustment button connected to the second connector, the adjustment button being slidably disposed within a groove and at least partially protruding from the outer wall of the housing.

[0013] Optionally, a pressing guide surface is provided on the side of the adjustment button that protrudes from the outer wall of the housing, and the pressing guide surface is set at an angle to the axial direction of the housing.

[0014] Alternatively, the flexible part may be at least partially disposed within the mounting channel.

[0015] Optionally, a guide portion is provided on the side of the housing near the opening, and the cross-sectional area of ​​the guide portion gradually decreases along the direction in which the bit body extends out of the opening.

[0016] Optionally, a handle may be fixedly installed on the outer wall of the housing.

[0017] The beneficial effects of this utility model are:

[0018] This invention proposes a multi-bit screwdriver, in which multiple bit components are housed within the casing. Compared to existing technologies where multiple bits are carried separately by the user or stored using additional tools, this invention improves the convenience of bit component storage and the structural integrity of the multiple bit components and the casing, avoiding the risk of bit component loss. The multiple bit components within the casing enhance the screwdriver's applicability to different screw sizes, increasing its versatility. An adjusting component slides along a groove, causing the first connecting piece to slide synchronously, allowing the bit body to extend or retract from the casing through an opening. This allows for flexible switching between the working and stored states of the bit body via the sliding motion of the adjusting component within the groove, simplifying operation and enhancing usability. An elastic component connects the bit body, reducing the risk of jamming when the bit body extends or retracts from the casing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the multi-head screwdriver described in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the bit assembly and adjustment assembly described in this embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the shell described in this embodiment of the utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the internal structure of the shell described in this embodiment of the utility model. Figure 2 ;

[0023] Figure 5 This is a schematic diagram of the internal structure of the shell described in this embodiment of the utility model. Figure 3 ;

[0024] Figure 6 yes Figure 5 A cross-sectional view along the AA direction.

[0025] In the picture:

[0026] 1. Housing; 11. Opening; 12. Slide groove; 13. Guide part; 2. Mounting bracket; 21. Mounting channel; 3. Bit assembly; 31. First connector; 32. Elastic part; 33. Bit body; 4. Adjustment assembly; 41. Second connector; 411. Locking protrusion; 4111. First abutment part; 4112. Second abutment part; 42. Elastic part; 43. Adjustment button; 431. Press guide surface. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-6As shown, this embodiment provides a multi-bit screwdriver, including a housing 1, multiple bit assemblies 3, and multiple adjusting components 4. The housing 1 has an opening 11 at one end along its own axial direction and multiple circumferentially spaced grooves 12 at the other end, each groove 12 extending along the axial direction of the housing 1. The multiple bit assemblies 3 are spaced apart inside the housing 1, and each bit assembly 3 includes a first connector 31, an elastic part 32, and a bit body 33 connected in sequence. The first connector 31 is slidably disposed inside the housing 1. The multiple adjusting components 4 are connected one-to-one with the first connector 31, and the adjusting components 4 are slidably engaged with the grooves 12. The adjusting components 4 can drive the first connector 31 to slide synchronously, so that the bit body 33 extends out or retracts into the housing 1 through the opening 11. It is understood that there are at least two different types of bit bodies 33 in the multiple bit assemblies 3. Each bit body 33 has a working state and a retracted state. When the bit body 33 is in the working state, the bit body 33 is stably extended out of the housing 1. When the bit body 33 is in the retracted state, the bit body 33 is retracted into the housing 1. The opening 11 provided on the housing 1 allows a maximum of one bit body 33 to extend or retract at a time.

[0032] In this embodiment, multiple bit assemblies 3 are housed inside the housing 1. Compared to the prior art where multiple bits are carried separately by the user or stored with the aid of additional tools, the multi-bit screwdriver proposed in this embodiment improves the storage convenience of the bit assemblies 3 and the structural integrity of the multiple bit assemblies 3 and the housing 1, avoiding the risk of loss of the bit assemblies 3. The multiple bit assemblies 3 are equipped with different types of bit bodies 33, improving the applicability of the multi-bit screwdriver to screwing different types of screws and enhancing its versatility in various scenarios. The adjusting component 4 slides in conjunction with the slide groove 12. When the adjusting component 4 slides along the slide groove 12, it can drive the first connecting member 31 to slide synchronously, allowing the bit body 33 to extend or retract into the housing 1 through the opening 11. That is, the sliding process of the adjusting component 4 within the slide groove 12 enables flexible switching between the use state and the stored state of the bit body 33. The switching process is simple and easy to implement, enhancing the ease of use of the bit body 33. The bit body 33 is connected to an elastic part 32. With the help of the elastic deformation capability of the elastic part 32, the risk of jamming when the bit body 33 extends or retracts into the housing 1 is reduced, and the reliability of the bit body 33 in switching between the storage state and the use state is improved.

[0033] Optionally, a guide portion 13 is provided on the side of the housing 1 near the opening 11, and the cross-sectional area of ​​the guide portion 13 gradually decreases along the direction in which the bit body 33 extends out of the opening 11. The guide portion 13 provides a guiding effect for the extension and retraction of the bit body 33, reduces the swaying amplitude of the bit body 33, and improves the motion stability of the bit body 33.

[0034] Specifically, the multi-bit screwdriver also includes a mounting bracket 2, which is fixedly disposed within the housing 1 and has multiple mounting channels 21 spaced apart along its circumference. Each mounting channel 21 extends axially along the housing 1, and the first connecting member 31 is slidably disposed within each mounting channel 21. The addition of mounting channels 21 enhances the limiting effect on the first connecting member 31, ensuring its sliding stability, thereby improving the movement stability of the bit body 33 when extending or retracting from the housing 1, ensuring the reliability of the bit body 33 and the independent operation of each bit body 33. Compared to directly placing the bit body 33 inside the housing 1, the addition of the mounting bracket 2 improves the overall structural strength and durability of the multi-bit screwdriver.

[0035] Optionally, the elastic part 32 is at least partially disposed within the mounting channel 21, so that the mounting channel 21 can constrain the radial deformation of the elastic part 32, reducing the deformation amplitude of the elastic part 32 during the extension or retraction of the bit body 33 into the housing 1, and improving the movement stability of the bit body 33. The fact that the elastic part 32 is at least partially disposed within the mounting channel 21 also ensures the smooth reset of the bit body 33, improves the positional accuracy of the bit body 33 in the stored state, and ensures that other bit bodies 33 can smoothly extend or retract into the housing 1.

[0036] For example, the material of the elastic part 32 includes spring steel, which has properties such as high elasticity, high fatigue strength and strong impact resistance, and can effectively extend the service life of the elastic part 32.

[0037] In this embodiment, as Figure 1 – Figure 4As shown, each adjustment component 4 includes a second connector 41 and an elastic element 42. The second connector 41 is connected to the first connector 31, and the elastic element 42 is sleeved on the outside of the second connector 41 and abuts against the top wall of the mounting bracket 2. Each second connector 41 has a locking protrusion 411 on the side near the axis of the housing 1. The two opposite outer walls of the locking protrusion 411 are respectively provided with a first abutting part 4111 and a second abutting part 4112. When any bit body 33 extends out of the opening 11, its corresponding second abutting part 4112 can abut against the first abutting part 4111 of other bit bodies 33. By setting the first abutting part 4111 and the second abutting part 4112, other bit bodies 33 can limit the position of any bit body 33 after it extends out of the opening 11, thereby enhancing the positional stability of any bit body 33 after it extends out of the opening 11 and ensuring the reliability of the bit body 33 in use. Compared to the locking protrusion 411 being located on the side of adjacent second connectors 41 that are close to each other, the locking protrusion 411 being located on the side of each second connector 41 near the axis of the housing 1 reduces the radial area occupied by the adjustment assembly 4 along the housing 1. This achieves miniaturization and weight reduction of the multi-bit screwdriver with the same number of bit assemblies 3, enhancing its portability. Furthermore, the second connector 41 is connected to the first connector 31, and the elastic element 42 is sleeved on the outside of the second connector 41 and abuts against the top wall of the mounting bracket 2. This arrangement allows the first connector 31 to slide along the mounting channel 21, compressing the elastic element 42 and causing the bit body 33 to extend out of the opening 11. Then, the retraction process of the bit body 33 is achieved by utilizing the reset characteristic of the elastic element 42. The elastic element 42 enables the automatic retraction of the bit body 33 back into the housing 1, improving the convenience and reliability of bit body storage. In this embodiment, the locking protrusion 411 has a groove in the middle to reduce its weight. In other embodiments, the locking protrusion 411 may also be configured as an integral connection structure without grooves, which is not specifically limited here.

[0038] Specifically, an adjustment guide surface is provided on the side of the first abutment portion 4111 away from the second abutment portion 4112 and / or on the side of the second abutment portion 4112 away from the first abutment portion 4111. The adjustment guide surface is set at an angle to the axial direction of the housing 1. The adjustment guide surface increases the contact area between the first abutment portion 4111 corresponding to any bit body 33 and the second abutment portion 4112 corresponding to other bit bodies 33, reducing the difficulty of contact between the two and the impact on the locking protrusion 411 during the contact process, thus extending the service life of the locking protrusion 411.

[0039] Furthermore, a flexible anti-slip element is provided on the side of the first abutment portion 4111 away from the second abutment portion 4112 and / or on the side of the second abutment portion 4112 away from the first abutment portion 4111. The provision of a flexible anti-slip element on at least one of the first abutment portion 4111 and the second abutment portion 4112 enhances the abutment reliability of the first abutment portion 4111 corresponding to any bit body 33 and the second abutment portion 4112 corresponding to other bit bodies 33, ensuring the reliability and stability of use after the bit body 33 extends out of the opening 11. Compared to a direct rigid collision between the first abutment portion 4111 and the second abutment portion 4112, the provision of the flexible anti-slip element also reduces the rigid impact effect on the first abutment portion 4111 and the second abutment portion 4112, extending the service life of the locking protrusion 411 and the second connecting member 41.

[0040] Optionally, each adjustment component 4 also includes an adjustment button 43. The adjustment button 43 is connected to the second connector 41. The adjustment button 43 is slidably disposed within the slide groove 12 and at least partially protrudes from the outer wall of the housing 1. The sliding engagement of the adjustment button 43 with the slide groove 12 reduces the difficulty for the user to drive the first connector 31. When the user applies force to the adjustment button 43, the adjustment button 43 slides along the slide groove 12, which drives the bit body 33 to extend or retract from the housing 1 through the opening 11. It is understood that when the user presses the adjustment button 43, the elastic member 42 is compressed and the bit body 33 extends out of the opening 11 of the housing 1 under the elastic deformation of the elastic part 32. At this time, when the user stops pressing the adjustment button 43, the second abutment part 4112 corresponding to the locking protrusion 411 will abut against the second abutment part 4112 corresponding to other bit bodies 33 under the reset effect of the elastic member 42, so that the bit body 33 is stably maintained outside the housing 1, improving the reliability of use. After use, press the adjustment button 43 to stop applying force. At this time, the first abutting part 4111 will be reset to the initial position under the reset effect of the elastic member 42, so that the bit body 33 retracts into the housing 1 and the bit body 33 switches from the use state to the storage state.

[0041] In other embodiments, to ensure stable extension and positioning of the bit body 33, rigid limiting blocks of different heights can be prefabricated. When the adjustment button 43 is pressed downwards along the axial direction of the housing 1 until the bit body 33 extends to a suitable length, a rigid limiting block of appropriate height is inserted into the groove 12 above the adjustment button 43 to prevent the adjustment button 43 from resetting under the action of the elastic element 42. The rigid limiting blocks ensure the stability of the bit body 33 in use. The positioning effect of the adjustment button 43 depends on the limiting effect of the rigid limiting blocks of different heights. The extension length of the bit body 33 can be flexibly adjusted according to the pressing length of the adjustment button 43 and effectively fixed under the action of the rigid limiting blocks, enhancing the usability of the bit body 33 under different spatial constraints.

[0042] Specifically, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, a pressing guide surface 431 is provided on the side of the adjustment button 43 that protrudes from the outer wall of the housing 1. The pressing guide surface 431 is set at an angle to the axial direction of the housing 1. The addition of the pressing guide surface 431 increases the contact area between the user's hand and the adjustment button 43, reducing the difficulty for the user to press the adjustment button 43. Compared with a flat button, the inclined pressing guide surface 431 also ensures that the user exerts a radial force on the adjustment button 43 along the housing 1, ensuring effective contact between the first abutting part 4111 and the corresponding second abutting part 4112 of the bit body 33, and ensuring the stability of the bit body 33 after it protrudes from the housing 1.

[0043] Furthermore, the pressing guide surface 431 is provided with anti-slip threads. The anti-slip threads enhance the friction between the user's hand and the pressing guide surface 431, effectively reducing the number of invalid presses caused by hand slippage and improving the user's pressing operation efficiency.

[0044] In some embodiments, the first connector 31 and the second connector 41 are plugged into each other. The first connector 31 and the second connector 41 are easy to assemble and disassemble, and the user can easily assemble and disassemble them. The manufacturing cost of the connection between the two is also low.

[0045] In other embodiments, the first connector 31 and the second connector 41 are snapped together, and the connection between the first connector 31 and the second connector 41 is highly stable, which can effectively adapt to the multiple extension and retraction operations of a single bit body 33 and ensure operational safety.

[0046] For example, a handle is fixedly provided on the outer wall of the housing 1. The handle improves the portability of the multi-bit screwdriver and reduces the difficulty for the user to rotate the bit body 33. Compared with directly rotating the housing 1, the addition of the handle provides the user with a grip position, which effectively improves the convenience of the user's screw-tightening operation.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-bit screwdriver, characterized in that, include: The housing (1) has an opening (11) at one end along its own axial direction and a plurality of circumferentially spaced grooves (12) at the other end, each groove (12) extending along the axial direction of the housing (1). Multiple bit assemblies (3) are spaced apart inside the housing (1). Each bit assembly (3) includes a first connector (31), an elastic part (32), and a bit body (33) connected in sequence. The first connector (31) is slidably disposed inside the housing (1). Multiple adjustment components (4) are connected one-to-one with the first connector (31). The adjustment components (4) correspond one-to-one with the slide groove (12) and slide together. The adjustment components (4) can drive the first connector (31) to slide synchronously, so that the bit body (33) extends or retracts into the housing (1) through the opening (11).

2. The multi-head screwdriver according to claim 1, characterized in that, The multi-head screwdriver also includes a mounting bracket (2), which is fixedly disposed in the housing (1) and has multiple mounting channels (21) spaced apart along its circumference. Each mounting channel (21) extends along the axial direction of the housing (1), and the first connector (31) is slidably disposed in the mounting channel (21) in a corresponding manner.

3. The multi-head screwdriver according to claim 2, characterized in that, Each of the adjustment components (4) includes a second connector (41) and an elastic member (42). The second connector (41) is connected to the first connector (31). The elastic member (42) is sleeved on the outside of the second connector (41) and abuts against the top wall of the mounting bracket (2). Each of the second connectors (41) has a locking protrusion (411) on the side near the axis of the housing (1). The two opposite outer walls of the locking protrusion (411) are respectively provided with a first abutting part (4111) and a second abutting part (4112). When any bit body (33) extends out of the opening (11), its corresponding second abutting part (4112) can abut against the first abutting part (4111) of the other bit body (33).

4. The multi-head screwdriver according to claim 3, characterized in that, An adjustment guide surface is provided on the side of the first abutting part (4111) away from the second abutting part (4112) and / or on the side of the second abutting part (4112) away from the first abutting part (4111), and the adjustment guide surface is set at an angle to the axial direction of the housing (1).

5. The multi-head screwdriver according to claim 3, characterized in that, A flexible anti-slip component is provided on the side of the first abutting part (4111) away from the second abutting part (4112) and / or on the side of the second abutting part (4112) away from the first abutting part (4111).

6. The multi-head screwdriver according to claim 3, characterized in that, Each of the adjustment components (4) further includes an adjustment button (43), which is connected to the second connector (41) and is slidably disposed in the groove (12) and at least partially protrudes from the outer wall of the housing (1).

7. The multi-head screwdriver according to claim 6, characterized in that, The adjustment button (43) has a pressing guide surface (431) on one side protruding from the outer wall of the housing (1), and the pressing guide surface (431) is set at an angle to the axial direction of the housing (1).

8. The multi-head screwdriver according to claim 2, characterized in that, The elastic part (32) is at least partially disposed within the mounting channel (21).

9. The multi-bit screwdriver according to any one of claims 1-8, characterized in that, The housing (1) has a guide portion (13) on the side near the opening (11), and the cross-sectional area of ​​the guide portion (13) gradually decreases along the direction in which the bit body (33) extends out of the opening (11).

10. The multi-bit screwdriver according to any one of claims 1-8, characterized in that, A handle is fixedly provided on the outer wall of the housing (1).

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