TWM525821U - Inertia driven hand tool - Google Patents

Description

Inertial drive hand tool

The present invention relates to a hand tool, and more particularly to an inertial driving hand tool.

As shown in FIG. 1 , a conventional T-shaped tool includes a grip 1 and a body 2 pivotally mounted on the grip 1 . The body 2 has a grip portion 201 that can be gripped by a user. And a working portion 202 that can be coupled with a tool head (not shown) such as a sleeve, such that when the user rotates the body 2 relative to the grip 1 and releases the body 2, The tool head is continuously rotated by the inertia of the body 2 to drive a screw (not shown) to quickly tighten or loosen the screw. However, the T-tool needs to utilize the laterally extending grip portion 201. Sufficient moment of inertia is generated, and the grip portion 201 not only occupies a relatively large space when rotating, but also causes a large volume of the T-shaped tool, and the grip portion 201 often accidentally hits surrounding objects when rotating. Or other people's problems, inconvenient to use.

Therefore, the object of the present invention is to provide an inertial driving hand tool that does not occupy a rotating space and is easy to use.

Thus, the inertial driving hand tool of the present invention comprises a housing, a rotating shaft, an annular flywheel, and a speed increasing gear system.

The housing has a chamber.

The rotating shaft is rotatably disposed on the housing, the rotating shaft has a first end extending in an axial direction and communicating with the outside of the housing, and a second extending along the axial direction and communicating with the outside of the housing An end portion opposite the first end portion.

The annular flywheel is pivotally disposed on the housing around the rotating shaft and located in the housing.

The speed increasing gear system has a starting gear coaxially disposed on the rotating shaft and located in the housing, at least one relay gear pivoting the housing and located in the housing, and a coaxially disposed on the annular flywheel and located a final gear in the chamber, the starting gear being axially interposed between the first and second ends, the relay gear meshing with the starting gear, the final gear meshing with the relay gear, The final gear has a rotational speed greater than the rotational speed of the starting gear.

The utility model has the advantages that the inertia is driven by the annular flywheel located in the casing, so that the first and second ends of the rotating shaft do not occupy space when rotating, and the overall structure is compact and convenient for the user to use.

Referring to Figures 2 and 3, an embodiment of the inertial driving hand tool of the present invention includes: a housing 10, a rotating shaft 20, an annular flywheel 30, a speed increasing gear system 40, and a bearing component. 50, a grip 60, and a tool head 70.

The housing 10 has a first annular wall 11 , a second annular wall 12 , and a surrounding wall 13 connected between the outer peripheral edge of the first annular wall 11 and the outer peripheral edge of the second annular wall 12 . The chamber 14 and a bushing tube 15 extending from the inner periphery of the first annular wall 11 into the chamber 14.

The rotating shaft 20 is rotatably disposed on the housing 10, and the rotating shaft 20 has a first end portion 21 extending along an axial direction X and communicating with the outer portion 10 of the housing, and an extension along the axial direction X and A second end 22 that communicates with the exterior of the housing 10, the second end 22 being opposite the first end 21. In this embodiment, the first end portion 21 and the second end portion 21 of the rotating shaft 20 protrude from the outside of the casing 10.

The annular flywheel 30 is pivotally disposed on the housing 10 around the rotating shaft 20 and located in the housing 14. In this embodiment, the annular flywheel 30 is pivotally disposed on the bushing tube 15. The annular flywheel 30 has a bottom wall 31, and a peripheral wall 32 thickened from the periphery of the bottom wall 31 along the axial direction X. The bottom wall 31 has a central aperture 311. It will be appreciated that the design of the peripheral wall 32 increases the moment of inertia of the annular flywheel 30, resulting in greater inertia of the annular flywheel 30 as it rotates.

The speed increasing gear system 40 has a starting gear 41 coaxially disposed on the rotating shaft 20 and located in the chamber 14, a relay gear 42 pivotally disposed in the housing 10 and located in the housing 14, and a relay gear 42 A final gear 43 coaxially disposed in the annular flywheel 30 and located within the chamber 14. The starting gear 41 is interposed between the first and second end portions 21, 22 in the axial direction X, and the relay gear 42 is in mesh with the starting gear 41. The final gear 43 and the relay gear 42 Intermeshing, the rotational speed of the final gear 43 is greater than the rotational speed of the starting gear 41.

In this embodiment, the relay gears 42 are respectively disposed on the inner side of the second ring wall 12, and the peripheral wall 32 surrounds the relay gears 42 such that the relay gears 42 are received in the ring flywheel. In the interior of the 30, each of the relay gears 42 has a first gear portion 421 that meshes with the start gear 41, and a second gear portion 422 that meshes with the final gear 43. The start gear 41 is Surrounding the first gear portion 421 of the gear 42 , the final gear 43 is disposed adjacent to the central bore 311 and surrounds the rotating shaft 20 , and the final gear 43 is surrounded by the second gear portion 422 of the relay gears 42 .

The bearing element 50 is disposed between the bushing tube 15 of the housing 10 and the final gear 43. In the present embodiment, the bearing member 50 is an oil-containing self-lubricating bushing.

The grip 60 is detachably disposed at the first end portion 21 of the rotating shaft 20.

The tool head 70 is detachably disposed at the second end portion 22 of the rotating shaft 20. In the drawing of the embodiment, the tool head 70 is represented by a type of a screwdriver, but is not limited thereto.

Thereby, as shown in FIG. 4, when the user wants to use the embodiment to screw a screw 100 such as a bolt to a fitting member 200 such as a nut, the tool head 70 and the screw are used. After the 100 is engaged, the housing 10 can be grasped by one of the hands, and the handle 60 can be rotated by the other hand, so that the grip 60 drives the rotating shaft 20 to rotate. In the process, the rotating shaft 20 passes through the The starting gear 41, the relay gears 42 and the final gear 43 can drive the annular flywheel 30 to rotate. Thereafter, as shown in FIG. 5, the user can release the other holding the grip 60. With one hand, the annular flywheel 30 can continuously rotate the rotating shaft 20 via the final gear 43 , the relay gear 42 and the starting gear 41 by using the inertia action of the ring flywheel 30 , and the rotating shaft 20 drives the tool head 70 . The screw 100 is screwed to the fitting 200; conversely, when the screw 100 is to be released, the user only needs to reversely rotate the grip 60 to achieve the purpose.

Through the above description, the advantages of the new model can be summarized as follows:

1. The present invention utilizes an annular flywheel 30 located in the housing 10 to generate inertia to continuously rotate the rotating shaft 20 to drive the tool head 70. The tool head 70, the first and second ends 21 of the rotating shaft 20, 21 and the grip 60 do not occupy space when rotating, and the annular flywheel 30 can use the peripheral wall 32 to increase the moment of inertia, effectively controlling the size of the bottom wall 31 in the lateral direction, compared to the prior art. The overall structure of the present invention is compact, does not occupy the rotating space, and does not accidentally hit surrounding objects or other people during use, and is convenient to use.

2. The annular flywheel 30 of the present invention not only generates inertia, but also has the function of accommodating the relay gears 42, thereby effectively reducing the volume of the casing 10.

It should be noted that the first end portion 21 of the rotating shaft 20 can of course also be formed into a shape of a grip, and the second end portion 22 of the rotating shaft 20 can of course directly form a tool head, that is to say, the rotating shaft. 20 itself can constitute a hand tool such as a one-piece screwdriver, so that the same functions and effects as described above can be produced.

In summary, the inertial driving hand tool of the present invention not only has a compact structure, but also does not occupy a rotating space, and is convenient for the user to operate and use, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

10‧‧‧shell
11‧‧‧First ring wall
12‧‧‧ Second ring wall
13‧‧‧ Around the wall
14‧‧ ‧ room
15‧‧‧Blind tube
20‧‧‧ shaft
21‧‧‧ first end
22‧‧‧ second end
30‧‧‧Circular Flywheel
31‧‧‧ bottom wall
311‧‧‧Central hole
32‧‧‧Weibi
40‧‧‧Speeding gear system
41‧‧‧Starting gear
42‧‧‧ Relay gear
421‧‧‧First gear department
422‧‧‧Second gear department
43‧‧‧ final gear
50‧‧‧ bearing components
60‧‧‧ grip
70‧‧‧Tool head
X‧‧‧ axial
100‧‧‧Spiral firmware
200‧‧‧Parts

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of a conventional T-type tool; FIG. 2 is an embodiment of the inertial driving hand tool of the present invention. 3 is a partially exploded perspective view of the embodiment; FIG. 4 is a view similar to FIG. 2, illustrating a state in which the user initially applies force to the embodiment; and FIG. 5 is similar. In the view of Fig. 4, the inertial driving state of this embodiment will be described.

10‧‧‧shell

11‧‧‧First ring wall

12‧‧‧ Second ring wall

13‧‧‧ Around the wall

14‧‧ ‧ room

15‧‧‧Blind tube

20‧‧‧ shaft

21‧‧‧ first end

22‧‧‧ second end

30‧‧‧Circular Flywheel

31‧‧‧ bottom wall

311‧‧‧Central hole

32‧‧‧Weibi

40‧‧‧Speeding gear system

41‧‧‧Starting gear

42‧‧‧ Relay gear

421‧‧‧First gear department

422‧‧‧Second gear department

43‧‧‧ final gear

50‧‧‧ bearing components

60‧‧‧ grip

70‧‧‧Tool head

X‧‧‧ axial

Claims (10)

An inertial driving hand tool comprising: a housing having a chamber; a rotating shaft rotatably disposed on the housing, the rotating shaft having a first end extending in an axial direction and communicating with an exterior of the housing And a second end portion extending along the axial direction and communicating with the exterior of the housing, the second end portion being opposite to the first end portion; an annular flywheel pivotally disposed on the housing around the rotating shaft And a speed increasing gear system having a starting gear coaxially disposed on the rotating shaft and located in the housing, at least one relay gear pivoting the housing and located in the housing, and a coaxial a final gear disposed in the annular flywheel and located in the chamber, the starting gear being axially interposed between the first and second ends, the relay gear meshing with the starting gear, the final gear Intersecting with the relay gear, the speed of the final gear being greater than the rotational speed of the starting gear. The inertial driving hand tool of claim 1, wherein the speed increasing gear system has a plurality of relay gears, each of the relay gears has a first gear portion meshing with the starting gear, and a final gear An engaged second gear portion that is surrounded by the first gear portion of the relay gears. The inertial driving hand tool of claim 2, wherein the annular flywheel has a bottom wall having a central hole, the final gear being disposed adjacent to the central hole and surrounding the rotating shaft, the final gear being such The second gear portion of the relay gear surrounds. The inertial driving hand tool of claim 3, wherein the annular flywheel further has a peripheral wall thickened in the axial direction from a circumference of the bottom wall, the peripheral wall surrounding the relay gears. The inertial driving hand tool of claim 3, wherein the housing further has a first annular wall, a second annular wall, an outer circumference connected to the first annular wall and a periphery of the second annular wall a surrounding wall between the edges, and a bushing tube extending from the inner periphery of the first ring wall to the housing, the annular flywheel is pivotally disposed on the bushing tube, and the relay gears are respectively pivoted The inside of the second ring wall. The inertial driving hand tool of claim 5, further comprising a bearing member disposed between the bushing tube of the housing and the final gear. The inertial drive hand tool of claim 6, wherein the bearing component is an oil-containing self-lubricating bushing. The inertial driving hand tool of claim 1, wherein the first end and the second end of the rotating shaft protrude from the outside of the housing. The inertial driving hand tool of claim 8, further comprising a grip detachably disposed at the first end of the rotating shaft, and a tool head detachably disposed at the second end of the rotating shaft. The inertial driving hand tool of claim 8, wherein the first end of the rotating shaft is a grip, and the second end of the rotating shaft forms a tool head.