Multi-bit semi-automatic switching screwdriver and its usage method

Abstract

The present invention discloses a multi-bit semi-automatic switching screwdriver and its usage method, which is characterized in that it includes a main body housing, a rotating housing, a connecting housing and a tool bit housing. A plurality of tool bit storage devices for storing screwdriver bits are provided in the connecting housing. A tool bit switching device is provided in the rotating housing. A screwdriver pushing device for pushing the screwdriver bit out of the tool bit housing is provided on the main body housing. The multi-bit semi-automatic switching screwdriver and its usage method of the present invention have a simple structure, are convenient to operate, have good operation stability, and have a good application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of hardware tools, and more specifically, relates to a multi-bit semi-automatic switching screwdriver and its usage method. Background Art

[0002] At present, most combinations of screwdrivers are of the separable type, that is, the bits can be arbitrarily switched and combined after being separated from the handle. One can simply insert the required bit into the fixing hole at the front end of the handle for use, and remove the bit and put it into the storage box for storing bits when not needed. Since the bits need to be switched in a separable manner, when used alone in special scenarios such as at high altitudes, it is necessary to carry the bits in advance, which is not conducive to work. However, asking others to help transfer the required bit type will reduce work efficiency. Secondly, during use, due to the small size of the bits, it is easy for users to lose them, causing losses; when several different types of screwdrivers need to be switched and used multiple times, users will spend a lot of time looking for the required type of screwdriver among the numerous bits. There are also some multi-bit screwdrivers in the prior art, which have complex structures and poor control stability and need to be further improved. Summary of the Invention

[0003] The object of the present invention is to solve the problems existing in the prior art, and provide a multi-bit semi-automatic switching screwdriver with a simple structure, easy to operate, and good control stability, and its usage method.

[0004] To achieve the above object, the technical solution adopted by the present invention is: the provided multi-bit semi-automatic switching screwdriver is characterized in that: it includes a main body housing, a rotating housing, a connecting housing and a bit outlet housing. A plurality of bit storage devices for storing screwdriver bits are provided in the connecting housing. A bit switching device is provided in the rotating housing. A screwdriver pushing device for pushing the screwdriver bit out of the bit outlet housing is provided on the main body housing.

[0005] To make the above technical solution more detailed and specific, the present invention also provides the following further preferred technical solutions to obtain satisfactory practical effects:

[0006] A plurality of bit storage devices arranged circumferentially are provided in the connecting housing, and the screwdriver bits are inserted and installed in the bit storage devices.

[0007] The bit switching device includes an internal gear. A driving gear ring meshing with the internal gear is provided on the inner wall surface of the rotating housing. The driving gear ring drives the internal gear to rotate, driving the bit storage device to move into the middle and move out in the reverse direction.

[0008] A bit storage groove for installing the screwdriver bit is provided on the bit storage device. A cam groove is provided near the outer edge of the bit storage device. A driving column clamped in the cam groove is provided at the lower end of the internal gear.

[0009] Guide slots for controlling the sliding direction of the cutter head memory are provided on both side walls of the cutter head memory. Guide rails are provided on the connecting housing and are fitted and clamped in the guide slots.

[0010] The screwdriver pushing device includes a push rod vertically arranged in the main body housing, and the push rod faces the screwdriver head that moves into the middle from below.

[0011] Vertical sliding grooves are provided on the outer side wall of the main body housing, and a push block clamped on the push rod is arranged in the vertical sliding grooves.

[0012] A push rod buckle is provided at the other end of the main body housing opposite to the push block, and the push rod buckle can be supported and clamped onto the push rod by a spring.

[0013] The upper end and the lower end of the rotating housing are respectively rotatably connected to the lower end of the main body housing and the upper end of the connecting housing through rotating bosses. The connecting housing is connected to the main body housing through a connecting column, and the cutter head housing is positioned and connected to the lower end of the connecting housing through a plug-in pin.

[0014] A method for using a multi-cutter head semi-automatic switching screwdriver includes the following steps: When calling the screwdriver head, manually rotate and adjust the rotating housing, drive the internal gear to rotate through internal meshing of gears, and the internal gear pushes the cutter head memory to move along the guide rail on the connecting housing to the central position. Then manually push the push block to push the push rod downward, and push the screwdriver head in the cutter head memory to the cutter head housing. At this time, the push rod buckle is pushed into the clamping hole of the push rod by the spring to achieve fixation; when retracting the screwdriver head, invert the screwdriver, first press the push block to push the push rod buckle out of the clamping hole to unlock the push rod, then push the push block back along the track, press the screwdriver head back into the corresponding cutter head memory, and then manually rotate the rotating housing to drive the cutter head memory to return to its position through external meshing of gears.

[0015] Compared with the prior art, the present invention has the following advantages: The multi-cutter head semi-automatic switching screwdriver and its using method of the present invention have a simple structure, are easy to operate, and have good operation stability, and have a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following briefly describes the content expressed by the drawings of this specification and the marks in the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the screwdriver of the present invention;

[0018] Figure 2 It is an exploded view of the screwdriver of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the internal cutter head switching device of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the screwdriver pushing device of the present invention;

[0021] Figure 5 This is a schematic structural diagram of the multi-bit module inside the screwdriver of the present invention;

[0022] Figure 6 This is a schematic structural diagram of the multi-bit module inside the screwdriver of the present invention;

[0023] Figure 7 This is a schematic structural diagram of the bit storage of the present invention;

[0024] Figure 8 This is a schematic structural diagram of the transmission gear assembly of the present invention.

[0025] The markings in the figure are: 1. Main body housing, 2. Push rod buckle, 3. Spring, 4. Push rod, 5. Push block, 6. Internal gear, 61. Driving column, 7. Rotating housing, 71. Driving gear ring, 8. Bit storage, 81. Cam groove, 82. Bit storage groove, 83. Guide rail groove, 9. Screwdriver bit, 10. Connecting housing, 11. Bit outlet housing, 12. Connecting column. Detailed implementation manners

[0026] The following further describes in detail the specific implementation manners of the present invention by describing the embodiments with reference to the accompanying drawings.

[0027] This multi-bit semi-automatic switching screwdriver of the present invention, as Figure 1 , 2 shown, includes a main body housing 1, a rotating housing 7, a connecting housing 10 and a bit outlet housing 11. A plurality of bit storages 82 for storing screwdriver bits 9 are provided inside the connecting housing 10. A bit switching device is provided inside the rotating housing 7. Rotating the rotating housing 7 drives a bit storage 8 to be adjusted to the middle position, and the screwdriver bit is pushed downward by the screwdriver pushing device provided on the main body housing 1 and pushed into the lower bit outlet housing. The outlet of the bit outlet housing resists the screwdriver body to only allow the head of the screwdriver bit to protrude for use. Using this multi-bit semi-automatic switching screwdriver can facilitate bit switching and rotational switching. When more stored bits need to be replaced, only the bit outlet housing needs to be disassembled to switch the bits in the storage, meeting the usage requirements.

[0028] In the present invention, a plurality of bit storages 8 arranged circumferentially are provided inside the connecting housing 10, and different screwdriver bits are provided in each bit storage 8. As Figure 5 , 6 shown, four bit storages are provided in this embodiment. The bit switching is realized through the bit switching device.

[0029] In the present invention, as Figure 3As shown in the figure, the tool bit switching device includes an internal gear 6. A driving gear ring 71 engaged with the internal gear 6 is provided on the inner wall surface of the rotating housing 7. The driving gear ring 71 drives the internal gear 6 to rotate, driving the tool bit storage 8 to move inward to the middle, and moving outward in the reverse direction after recycling the tool bits. As Figure 7 As shown in the figure, each tool bit storage 8 is provided with a tool bit storage groove 82 for installing the screwdriver bit. A cam groove 81 is provided near the outer edge of the tool bit storage 8. A driving post 61 clamped in the cam groove 81 is provided at the lower end of the internal gear 6. As Figure 8 As shown in the figure. In the specific switching process, when the rotating housing 7 is rotated and the driving gear ring 71 rotates and meshes with the corresponding internal gear 6, the internal gear 6 is driven to rotate. The driving post 61 provided at one side edge of the internal gear 6 is inserted into the cam groove 81, converting the rotation of the internal gear 6 into a linear movement of the tool bit storage 8, driving the tool bit storage 8 to move back and forth. When the internal gear rotates one circle, the tool bit storage 8 completes a process of moving to the center and then moving out. After adjusting to the appropriate position of the screwdriver bit 9, the tool bit storage 8 is in the middle position, and the screwdriver bit 9 is pushed out by controlling the screwdriver pushing device.

[0030] In the present invention, preferably, guide rail grooves 83 for controlling the sliding direction of the tool bit storage 8 are provided on both side walls of the tool bit storage 8. Guide rails that are fitted and clamped in the guide rail grooves 83 are provided on the connecting housing 10 to control the stability of the tool bit storage 8 during the switching process.

[0031] In the present invention, the length of the driving gear ring 71 is the circumference of one internal gear 6, so as to ensure that only one internal gear 6 is driven to rotate during the rotation of the driving gear ring 71, avoiding interference caused by gear linkage to each other. In this embodiment, four internal gears are provided, and the length of the driving gear ring does not exceed one-fourth of the circumference of the driving gear, which is convenient for installation and layout and meets the use requirements.

[0032] In the present invention, as Figure 4 As shown in the figure, the screwdriver pushing device includes a push rod 4 vertically provided in the main body housing. The push rod 4 faces the screwdriver bit 9 that moves into the middle from below. A vertical sliding groove is provided on the outer wall of the main body housing 1. A push block 5 clamped on the push rod 4 is provided in the vertical sliding groove. The push block 5 is pushed downward along the vertical sliding groove to push the push rod 4 to push out the screwdriver bit 9.

[0033] In the present invention, on the other end of the main body housing 1 opposite to the push block 5, there is a push rod buckle 2. The push rod buckle 2 can be supported by a spring 3 and snap - connected to the push rod 4. One end of the push rod buckle 2 is connected to the spring 3, and the spring 3 drives the push rod buckle 2 to move in a direction perpendicular to the push rod 4 and snap - into the snap - connection hole provided on the push rod 4 to limit the up - and - down movement of the push rod 4 and ensure the normal and stable use process of the screwdriver bit 9. When the screwdriver bit 9 is pushed to the lowermost position, the position of the snap - connection hole is opposite to the position of the push rod buckle 2, and it can just snap into the snap - connection hole, and positioning is achieved under the support of the spring. When returning, press the push block 5 to push the push rod buckle 2 out of the snap - connection hole position, push the screwdriver bit 9 upward and retract it into the bit storage 8 in the cavity, and then rotate the rotating housing 7 back to the neutral position to move the bit storage 8 back to the initial position from the middle.

[0034] In the present invention, as Figure 2 shown in the figure, the upper end and the lower end of the rotating housing 7 are respectively rotatably connected to the lower end of the main body housing 1 and the upper end of the connecting housing 10 through rotating bosses. The connecting housing 10 is connected to the main body housing 1 through a connecting column 12. The knife - out housing 11 is positioned and connected to the lower end of the connecting housing 10 through a plug - in pin.

[0035] In this multi - bit semi - automatic switching screwdriver of the present invention, the main body housing 1 internally contains a spring 3, a push rod buckle 2, a push rod 4, and a push block 5. As Figure 4 shown in the figure, four internal gears 6 are connected to the main body housing 1 as fulcrums. The rotating housing 7 is connected to the main body housing 1, and this connection method enables the rotating housing 7 to rotate freely. The four internal gears 6 are internally meshed with the rotating housing 7, as Figure 3 shown in the figure. The connecting housing 10 is fixed to the main body housing 1 through a connecting column 12. Four bit storages 8 are placed in the connecting housing 10, four screwdriver bits 9 are in the bit storages 8, and the knife - out housing 11 is fixedly connected to the connecting housing 10.

[0036] For the usage method of this multi - bit semi - automatic switching screwdriver of the present invention, when calling the screwdriver bit, manually rotate and adjust the rotating housing 7 to drive the internal gear 6 to rotate through internal gear meshing. The internal gear 6 drives the driving column 61 on the component through rotation, and the driving column 61 rotates with the internal gear 6 to push the bit storage 8 along the guide rail on the connecting housing 10 to the central position for reference Figure 4, then manually push the push block 5 to push the push rod 4 downward, and push the screwdriver bit 9 in the bit storage 8 out of the bit housing 11. At this time, the push rod buckle 2 in the main body housing 1 is pushed into the clamping hole of the push rod 4 by the spring 3 to push the push block 5 out a certain distance to achieve a fixed operation. When retracting the screwdriver bit, invert the screwdriver, first press the push block 5 to push the push rod buckle 2 out of the clamping hole to unlock the push rod 4, and then push the push block 5 back along the track. At this time, the screwdriver bit 9 returns to the corresponding bit storage 8, and then manually rotate the rotating housing 7 to drive the bit storage 8 to return by external meshing of the gears.

[0037] The multi-bit semi-automatic switching screwdriver and its usage method of the present invention have a simple structure, are easy to operate, and have good operation stability, and have good application prospects.

[0038] The present invention has been described exemplarily above in conjunction with the accompanying drawings. However, the present invention is not limited to the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention or directly applied to other occasions, they all fall within the protection scope of the present invention.

Claims

1. A multi-bit semi-automatic switching screwdriver, characterized in that: It includes a main body housing, a rotating housing, a connecting housing and a tool bit housing. A plurality of tool bit memories for storing screwdriver bits are provided in the connecting housing. A tool bit switching device is provided in the rotating housing. A screwdriver bit pushing device for pushing the screwdriver bit out of the tool bit housing is provided on the main body housing. A plurality of tool bit memories arranged circumferentially are provided in the connecting housing, and the screwdriver bits are inserted and installed in the tool bit memories. The tool bit switching device includes an internal gear, and a driving gear ring meshing with the internal gear is provided on the inner wall surface of the rotating housing. The driving gear ring drives the internal gear to rotate to drive the tool bit memory to move into the middle and move out in the reverse direction. The upper end and the lower end of the rotating housing are respectively rotatably connected to the lower end of the main body housing and the upper end of the connecting housing through rotating bosses. The connecting housing is connected to the main body housing through connecting columns. The tool bit housing is positioned and connected to the lower end of the connecting housing through a plugging pin.

2. The multi-bit semi-automatic switching screwdriver according to claim 1, characterized in that: The tool bit memory is provided with a tool bit storage groove for installing the screwdriver bit, and a cam groove is provided near the outer edge of the tool bit memory. A driving column clamped in the cam groove is provided at the lower end of the internal gear.

3. The multi-bit semi-automatic switching screwdriver according to claim 2, wherein: Guide rail grooves for controlling the sliding direction of the tool bit memory are provided on both side walls of the tool bit memory, and guide rails that are fitted and clamped in the guide rail grooves are provided on the connecting housing.

4. The multi-bit semi-automatic switching screwdriver according to any one of claims 1 to 3, characterized in that: The screwdriver bit pushing device includes a push rod vertically provided in the main body housing, and the push rod faces the screwdriver bit that moves into the middle from below.

5. The multi-bit semi-automatic switching screwdriver according to claim 4, wherein: A vertical sliding groove is provided on the outer side wall of the main body housing, and a push block clamped on the push rod is provided in the vertical sliding groove.

6. The multi-bit semi-automatic switching screwdriver according to claim 5, wherein: On the other end of the main body housing opposite to the push block, a push rod buckle is provided, and the push rod buckle can be supported and clamped to the push rod through a spring.

7. A method for using a multi-bit semi-automatic switching screwdriver, characterized in that: It includes the following steps: When calling the screwdriver bit, manually rotate and adjust the rotating housing, drive the internal gear to rotate through internal meshing of the gears, the internal gear pushes the tool bit memory to move along the guide rail on the connecting housing to the central position, then manually push the push block to push the push rod downward, and push the screwdriver bit in the tool bit memory to the tool bit housing. At this time, the push rod buckle is pushed into the clamping hole of the push rod by the spring to achieve fixation. When retracting the screwdriver bit, invert the screwdriver, first press the push block to push the push rod buckle out of the clamping hole to unlock the push rod, then push the push block back along the track, press the screwdriver bit back into the corresponding tool bit memory, and then manually rotate the rotating housing to drive the tool bit memory to return to its position through external meshing of the gears.

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