Bidirectional different-speed screwdriver

Abstract

The utility model relates to the technical field of screwdrivers, and particularly discloses a bidirectional different-speed screwdriver which is characterized in that when the bidirectional different-speed screwdriver is used, a shell is held firstly, then a rotating handle is rotated, and the rotating handle is coaxially connected with a first large gear, so that the first large gear can be driven to rotate at the same rotating speed by rotating the rotating handle; the perimeter of the first large gear is four times that of the first small gear, so that the first small gear rotates around when the first large gear rotates by one circle, and the first small gear and the second large gear are coaxially connected, so that the first small gear rotates around and the second large gear also rotates around; and the perimeter of the first large gear is four times that of the second small gear, so that the first large gear rotates by one circle to drive the second small gear to rotate by sixteen circles, the second small gear drives the magnetic suction rod to rotate through the transmission sleeve, the rotating speed of the magnetic suction rod is increased through transmission among the multiple gears, and the effect of improving the screw screwing efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to a bidirectional variable-speed screwdriver. Background Art

[0002] A screwdriver is a tool used to twist a screw to force it into place or out of place, and is mostly used in production and life.

[0003] Existing Chinese patent: A double ratchet screwdriver, patent number: CN219582716U, relates to the field of screwdriver technology, including: a screwdriver rod, a first bidirectional ratchet handle, and a second bidirectional ratchet handle. The first bidirectional ratchet handle includes a first bidirectional ratchet, and the first bidirectional ratchet is detachably fixedly connected to the screwdriver rod; the second bidirectional ratchet handle includes a second bidirectional ratchet, and the screwdriver rod passes through the first bidirectional ratchet handle and is detachably fixedly connected to the second bidirectional ratchet, so as to achieve quick loosening or tightening of screws, improve the working efficiency of the screwdriver, and reduce labor intensity.

[0004] However, during the implementation of the above technical solution, it was found that at least the following technical problems exist: when the above screwdriver is used, the speed of screwing the screw is equal to the speed of rotating the wrist, so the efficiency of screwing the screw is low. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a bidirectional variable-speed screwdriver to solve the technical problem that the speed of screwing the screw when in use is equal to the speed of rotating the wrist, so the efficiency of screwing the screw is low.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A bidirectional variable-speed screwdriver comprises a shell, wherein a first large gear is rotatably mounted inside the shell, a first small gear is rotatably mounted inside the shell, a second large gear is fixedly mounted on the bottom end of the first small gear, and a second small gear is fixedly mounted inside the shell; the first large gear meshes with the first small gear, the second small gear meshes with the second large gear, a transmission sleeve is fixedly mounted on the bottom end of the second small gear, two first end face ratchets are slidably mounted inside the transmission sleeve, a pull ring is rotatably mounted on the top ends of the two first end face ratchets, a magnetic suction rod is rotatably mounted on the bottom end of the shell, and two second end face ratchets are fixedly mounted on the magnetic suction rod; the two second end face ratchets are respectively meshed with the two first end face ratchets, and springs are fixedly mounted on the top ends of the two first end face ratchets.

[0010] Preferably, a rotating handle is fixedly mounted on the top end of the first large gear.

[0011] Preferably: a screwdriver bit is magnetically mounted on the bottom end of the magnetic rod.

[0012] (III) Beneficial effects

[0013] 1. When in use, first hold the outer shell, and then turn the handle. The handle is coaxially connected to the first large gear, so rotating the handle will drive the first large gear to rotate at the same speed. Since the first large gear and the first small gear are meshed with each other, and the circumference of the first large gear is four times that of the first small gear, one rotation of the first large gear will cause the first small gear to rotate four weeks. Since the first small gear is coaxially connected to the second large gear, the second large gear will also rotate four weeks when the first small gear rotates four weeks, and the circumference of the second large gear is four times that of the second small gear. Therefore, one rotation of the first large gear will drive the second small gear to rotate sixteen weeks. The second small gear drives the magnetic rod to rotate through the transmission sleeve, and the transmission is carried out between multiple gears to complete the increase of the speed of the magnetic rod, thereby achieving the effect of improving the efficiency of screwing.

[0014] 2. When in use, pull up the upper or lower pull ring, and the pull ring can make the corresponding first end face ratchet slide upward inside the transmission sleeve and leave the second end face ratchet engaged with it. At this time, turn the handle, and the handle will drive the transmission sleeve to rotate through the second pinion gear. The transmission sleeve will drive the two first end face ratchets to rotate. One of the first end face ratchets will disengage from the engagement with the second end face ratchet and will not drive the magnetic suction rod to rotate. The first end face ratchet that remains engaged will make the corresponding second end face ratchet rotate in the corresponding direction to drive the magnetic suction rod. When rotating in the opposite direction, the first end face ratchet that remains engaged will overcome the elastic force of the spring under the action of the inclined surfaces of the first end face ratchet and the second end face ratchet, slide upward and no longer drive the magnetic suction rod. By pulling the pull rings separately, the rotation direction of the magnetic suction rod can be selected, thereby achieving the effect of being able to accurately change the rotation direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the turning handle of the utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the shell of the utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the transmission sleeve of the utility model;

[0019] Figure 4 This is a structural diagram of the transmission sleeve of the utility model.

[0020] Legend: 1. Outer shell; 2. First large gear; 3. First small gear; 4. Second small gear; 5. Transmission sleeve; 6. First end face ratchet; 7. Pull ring; 8. Spring; 9. Magnetic rod; 11. Second end face ratchet; 12. Batch bit; 13. Turning handle; 14. Second large gear. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a bidirectional variable-speed screwdriver, which effectively solves the technical problem that the speed of screwing the screw when in use is equal to the speed of rotating the wrist, so the efficiency of screwing is low. When in use, first hold the shell, and then rotate the handle. The handle is coaxially connected to the first large gear, so rotating the handle will drive the first large gear to rotate at the same speed. Since the first large gear and the first small gear are meshed with each other, and the circumference of the first large gear is four times the circumference of the first small gear, the first large gear will rotate four weeks when it rotates one circle. Since the first small gear is coaxially connected to the second large gear, the second large gear will also rotate four weeks when the first small gear rotates four weeks, and the circumference of the second large gear is four times the circumference of the second small gear. Therefore, the first large gear will drive the second small gear to rotate sixteen weeks when it rotates one circle. The second small gear drives the magnetic suction rod to rotate through the transmission sleeve. Through multiple gears, The transmission is carried out between the two ends to increase the rotation speed of the magnetic suction rod, thereby achieving the effect of improving the efficiency of screwing the screw. When in use, pull up the upper or lower pull ring, and the pull ring can make the corresponding first end face ratchet slide upward inside the transmission sleeve and leave the second end face ratchet engaged therewith. At this time, turn the handle, and the handle will drive the transmission sleeve to rotate through the second pinion gear, and the transmission sleeve will drive the two first end face ratchets to rotate, and one of the first end face ratchet wheels will be disengaged from the engagement with the second end face ratchet wheel and will not drive the magnetic suction rod to rotate. The first end face ratchet wheel that remains engaged will make the corresponding second end face ratchet wheel rotate in the corresponding direction to drive the magnetic suction rod. When rotating in the opposite direction, the first end face ratchet wheel that remains engaged will overcome the elastic force of the spring under the action of the inclined surfaces of the first end face ratchet wheel and the second end face ratchet wheel, slide upward and no longer drive the magnetic suction rod. By pulling the pull rings respectively, the rotation direction of the magnetic suction rod can be selected, thereby achieving the effect of being able to accurately change the rotation direction.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the speed of screwing the screw when using the screwdriver is equal to the speed of rotating the wrist, so the efficiency of screwing the screw is low. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a bidirectional variable speed screwdriver, comprising a housing 1, a first large gear 2 is rotatably mounted inside the housing 1, a first small gear 3 is rotatably mounted inside the housing 1, a second large gear 14 is fixedly mounted at the bottom end of the first small gear 3, and a second small gear 4 is fixedly mounted inside the housing 1; the first large gear 2 is meshed with the first small gear 3,

[0025] The second small gear 4 is meshed with the second large gear 14. A transmission sleeve 5 is fixedly installed at the bottom end of the second small gear 4. Two first end face ratchets 6 are slidably installed inside the transmission sleeve 5. Pull rings 7 are rotatably installed at the top ends of the two first end face ratchets 6. A magnetic suction rod 9 is rotatably installed at the bottom end of the housing 1.

[0026] Two second end face ratchets 11 are fixedly mounted on the magnetic rod 9; the two second end face ratchets 11 are respectively meshed with the two first end face ratchets 6, the top ends of the two first end face ratchets 6 are fixedly mounted with springs 8, the top end of the first large gear 2 is fixedly mounted with a turning handle 13, and the bottom end of the magnetic rod 9 is magnetically mounted with a screwdriver bit 12.

[0027] Working principle:

[0028] The first step is to hold the shell 1 when using it, and then rotate the handle 13. The handle 13 is coaxially connected to the first large gear 2, so rotating the handle 13 will drive the first large gear 2 to rotate at the same speed. Since the first large gear 2 and the first small gear 3 are meshed with each other, and the circumference of the first large gear 2 is four times the circumference of the first small gear 3, one rotation of the first large gear 2 will cause the first small gear 3 to rotate four weeks. Since the first small gear 3 is coaxially connected to the second large gear 14, the second large gear 14 will also rotate four weeks after the first small gear 3 rotates four weeks, and the circumference of the second large gear 14 is four times the circumference of the second small gear 4. Therefore, one rotation of the first large gear 2 will drive the second small gear 4 to rotate sixteen weeks. The second small gear 4 drives the magnetic rod 9 to rotate through the transmission sleeve 5. The transmission is carried out between multiple gears to increase the rotation speed of the magnetic rod 9, thereby achieving the effect of improving the efficiency of screwing.

[0029] The second step is that when in use, pull up the upper or lower pull ring 7, the pull ring 7 can make the corresponding first end face ratchet 6 slide upward inside the transmission sleeve 5 and leave the second end face ratchet 11 meshing with it. At this time, turn the handle 13, the handle 13 will drive the transmission sleeve 5 to rotate through the second pinion 4, and the transmission sleeve 5 will drive the two first end face ratchet wheels 6 to rotate, one of the first end face ratchet wheels 6 is disengaged from the meshing with the second end face ratchet wheel 11 and will not drive the magnetic suction rod 9 to rotate. The first end face ratchet wheel 6 that remains meshed will make the corresponding second end face ratchet wheel 11 rotate in the corresponding direction to drive the magnetic suction rod 9. When rotating in the opposite direction, the first end face ratchet wheel 6 that remains meshed will overcome the elastic force of the spring 8 under the action of the inclined surfaces of the first end face ratchet wheel 6 and the second end face ratchet wheel 11, slide upward and no longer drive the magnetic suction rod 9. By pulling the pull ring 7 respectively, the rotation direction of the magnetic suction rod 9 is selected, thereby achieving the effect of being able to accurately change the rotation direction.

[0030] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A bidirectional variable speed screwdriver, comprising a housing (1), characterized in that: A first large gear (2) is rotatably mounted inside the housing (1), a first small gear (3) is rotatably mounted inside the housing (1), a second large gear (14) is fixedly mounted at the bottom end of the first small gear (3), and a second small gear (4) is fixedly mounted inside the housing (1); The first large gear (2) is meshed with the first small gear (3), and the second small gear (4) is meshed with the second large gear (14).

2. A bidirectional variable speed screwdriver as claimed in claim 1, characterized in that: A transmission sleeve (5) is fixedly mounted on the bottom end of the second pinion (4), two first end face ratchets (6) are slidably mounted inside the transmission sleeve (5), and pull rings (7) are rotatably mounted on the top ends of the two first end face ratchets (6).

3. A bidirectional variable speed screwdriver as claimed in claim 1, characterized in that: A magnetic rod (9) is rotatably mounted on the bottom end of the housing (1), and two second end face ratchets (11) are fixedly mounted on the magnetic rod (9); The two second end face ratchets (11) are respectively meshed with the two first end face ratchets (6).

4. A bidirectional variable speed screwdriver as claimed in claim 2, characterized in that: The top ends of the two first end face ratchets (6) are both fixedly mounted with springs (8).

5. A bidirectional variable speed screwdriver as claimed in claim 1, characterized in that: A rotating handle (13) is fixedly mounted on the top end of the first large gear (2).

6. A bidirectional variable speed screwdriver as claimed in claim 3, characterized in that: A screwdriver bit (12) is magnetically mounted on the bottom end of the magnetic rod (9).

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