TWI894065B - Ratchet wrench - Google Patents

Abstract

The invention relates to a ratchet wrench, which includes: a body, a first working head, an insertion rod, two adapters and a driving head. The first working head includes a first base body and a first ratchet wheel. The first base is located at one end of the body. The first ratchet wheel is rotatably mounted on the first base with a first rotation axis as the center. The insertion rod is detachably inserted into the first ratchet wheel along the first rotation axis to form a rotational relationship. The two adapters are detachably assembled to the insertion rod protruding from the two opposite sides of the first working head. When the insertion rod is not inserted into the first ratchet wheel, each of the adapters can be inserted into the first ratchet wheel along the first rotation axis to form a synchronous rotation relationship. The driving head is located at the other end of the body for assembly and reception of the rotating member.

Description

ratchet wrench

The present invention relates to hand tools, and in particular to a ratchet wrench.

A ratchet wrench allows users to turn fasteners such as screws, bolts, and nuts by repeatedly moving their hands back and forth within a limited space. With a ratchet mechanism as its core component, a ratchet tool rotates the fastener in the preset drive direction but does not rotate the fastener in the opposite direction. This significantly reduces the required operating space and eliminates the need to frequently shift hand positions to achieve rotation, effectively improving work efficiency.

However, traditional ratchet wrenches typically feature a single head with a ratchet mechanism fixed to one end of the handle. This significantly restricts their flexibility and adaptability, and their operational flexibility is limited, making them inadequately suited for various environments.

Therefore, it is necessary to provide a novel and advanced ratchet wrench to solve the above problems.

The primary purpose of this invention is to provide a ratchet wrench that allows an insert rod to be plugged into a first ratchet and used in an L-bar or T-bar configuration. This allows an adapter attached to the insert rod to penetrate into various confined spaces to drive fasteners. Furthermore, the adapter can be directly plugged into the first ratchet for use, providing users with a variety of usage options.

To achieve the above objectives, the present invention provides a ratchet wrench comprising: a main body, a first working head, a plunger, two adapters, and a drive head. The first working head includes a first base and a first ratchet. The first base is disposed at one end of the main body, and the first ratchet is rotatably mounted on the first base about a first rotation axis. The plunger can be detachably connected to the first ratchet along the first rotation axis for co-rotation. The two adapters are detachably connected to opposite sides of the plunger protruding from the first working head. When the plunger is not connected to the first ratchet, each adapter can be connected to the first ratchet along the first rotation axis for co-rotation. The drive head is disposed at the other end of the main body for assembly with the rotating member.

1: Body

11: First set of joints

111: Assembly Space

12: Second set of joints

121: Flat surface

2: First working head

21: The First Body

22: First ratchet

3: Second working head

31: Second seat

32: Second ratchet

33: Drive head

4: Plunger

41: Shaft

42: Assembly joint

5: Adapter

51: Guard

52: Body

53: Head

54: Jack

61: First rotation axis

62: Second rotation axis

63: First swing axis

64: Second swing axis

Figure 1 is a perspective view of an embodiment of the present invention.

Figure 2 is an exploded view of Figure 1.

Figure 3 is a schematic diagram showing the interference between the stopper and the first ratchet of the adapter in Figure 1.

Figure 4 is a perspective view of the adapter plugged into the first ratchet according to one embodiment of the present invention.

Figure 5 is a perspective view of the main body, first working head, and second working head of one embodiment of the present invention.

Figure 6 is an exploded view of Figure 5.

Figure 7 is a schematic diagram of the first working head swinging relative to the main body in one embodiment of the present invention.

Figure 8 is a schematic diagram of the second working head swinging relative to the main body in one embodiment of the present invention.

Figures 9 and 10 illustrate different usage scenarios of an embodiment of the present invention.

The following examples illustrate possible implementations of the present invention and are not intended to limit the scope of protection sought by the present invention. The phrases "one" or "at least one" preceding any term herein do not limit the quantity; the term may also include "plurality" as needed. Such variations in quantity are also within the scope of protection sought, and are therefore warranted.

Please refer to Figures 1 to 10, which show an embodiment of the present invention. The ratchet wrench of the present invention includes: a body 1, a first working head 2, a plunger 4, two adapters 5, and a drive head 33.

The first working head 2 includes a first base 21 and a first ratchet 22. The first base 21 is disposed at one end of the main body 1, and the first ratchet 22 is rotatably mounted on the first base 21 about a first rotation axis 61. The plunger 4 can be detachably connected to the first ratchet 22 along the first rotation axis 61, thereby enabling co-rotation. The two adapters 5 are detachably connected to opposite sides of the plunger 4 protruding from the first working head 2. Each of the two adapters 5 is configured to be connected to a rotating component. When the plunger 4 is not connected to the first ratchet 22, each adapter 5 can be connected to the first ratchet 22 along the first rotation axis 61, thereby enabling co-rotation, thereby providing a variety of operating options. The drive head 33 is located at the other end of the body 1 for assembly with the rotating part.

Furthermore, when the plunger 4 is inserted into the first ratchet 22, the user can use the plunger in two, but not limited to, different, modes. Mode 1: Like using an L-bar, the plunger 4 allows the adapter 5 to penetrate deep into the space and engage the object to be rotated. The user then holds the main body 1 and rotates the plunger 4 via the first ratchet 22. Mode 2: Like using a T-bar, the drive head 33 engages the object to be rotated, and the user holds the plunger 4 to rotate the main body 1.

More specifically, each adapter 5 comprises a stopper 51, a body 52, and a head 53. The stopper 51 protrudes laterally from one side of the body 52. The stopper 51 and the first ratchet 22 prevent interference in the direction of the first rotation axis 61, preventing them from disengaging. The body 52 is pluggable into the first ratchet 22, while the head 53 protrudes axially from the side of the body 52 opposite the stopper 51 to facilitate assembly with a rotating component. The body 52 is longer than the head 53 in the direction of the first rotation axis 61, ensuring sufficient structural strength for engagement with the first ratchet 22.

Preferably, the heads 53 of the two adapter heads 5 are of different sizes, and the driver head 33 is also different in size from the heads 53 of the two adapter heads 5. This allows for a wider variety of shapes and sizes to be selected by users based on their needs.

More specifically, each adapter 5 further includes a socket 54 extending from the stop 51 toward the head 53. The rod 4 includes a shaft 41 and two sets of connectors 42. The two sets of connectors 42 protrude axially from opposite end surfaces of the shaft 41. The connectors 42 can be detachably plugged into the socket 54, allowing the user to quickly connect and disconnect the rod 4 and adapter 5 by plugging and unplugging.

Preferably, the dimensions of each set of connectors 42 correspond to the dimensions of the head 53 of the adapter 5 to which it is assembled, allowing the user to quickly identify the assembly. Furthermore, each set of connectors 42 can even be directly assembled with the rotating component.

Another preferred embodiment is that the cross-sectional profile of the rod 4 and the cross-sectional profile of the body 52 are both polygonal, so as to facilitate the coordination with other tools (such as a wrench) and rotation thereof.

In this embodiment, the first base 21 is rotatably disposed on a first connecting portion 11 of the main body 1 around a first swing axis 63 , and the first rotation axis 61 and the first swing axis 63 are arranged to be non-intersecting. The ratchet wrench further includes a second working head 3, which comprises a second base 31, a second ratchet 32, and the drive head 33. The second base 31 is pivotally mounted on a second connecting portion 12 of the main body 1 about a second pivot axis 64. The second pivot axis 64 is transverse to the first pivot axis 63. The second ratchet 32 is rotatably mounted on the second base 31 about a second rotation axis 62. The second rotation axis 62 and the second rotation axis 64 intersect with each other. The drive head 33 is mounted on the second ratchet 32 about the second rotation axis 62, co-rotating with the second ratchet 32.

As can be seen above, the first working head 2 and the second working head 3 have completely different swinging directions, enabling various swing angle applications. Furthermore, the different rotation directions of the first ratchet 22 and the second ratchet 32 further enable a wide variety of usage combinations, enabling full application in a variety of different environments.

Preferably, one of the first and second connecting portions 11 and 12 is recessed with an assembly space 111, while the outer contour of the other includes two flat surfaces 121. One of the first and second bases 21 and 31 is movably inserted into the assembly space 111, while the other is movably clamped against the two flat surfaces 121. The first and second connecting portions 11 and 12 are assembled to the first and second bases 21 and 31, respectively, through different structures, one concave and one convex. This not only makes it easier for the assembler to quickly identify the difference, but also ensures that the main body 1 maintains a certain structural strength.

When the first rotation axis 61 and the second swing axis 64 are parallel to each other, the first working head 2 does not extend beyond the second working head 3 in the direction of the second swing axis 64. The structural differences of different thicknesses and sizes provide users with a variety of application options.

1: Body

2: First working head

3: Second working head

4: Plunger

5: Adapter

Claims (10)

A ratchet wrench comprises: a main body; a first working head including a first base and a first ratchet, the first base being disposed at one end of the main body, the first ratchet being rotatably disposed on the first base about a first rotating axis; a plunger being detachably plugged into the first ratchet along the first rotating axis to form a co-rotating relationship; two adapters being detachably assembled to opposite sides of the plunger protruding from the first working head, and each of the adapters being plugged into the first ratchet along the first rotating axis to form a co-rotating relationship when the plunger is not plugged into the first ratchet; and a drive head being disposed at the other end of the main body for assembly with a rotating member. A ratchet wrench as described in claim 1, wherein each adapter includes a baffle, a body and a head, the baffle protruding laterally from one side of the body, the baffle and the first ratchet blocking and interfering with each other in the direction of the first rotation axis, the body being insertable into the first ratchet, and the head protruding axially from a side of the body opposite to the baffle. A ratchet wrench as described in claim 2, wherein the cross-sectional profile of the rod and the cross-sectional profile of the body are both polygonal. A ratchet wrench as described in claim 2, wherein each adapter head further includes a socket, which extends from the baffle toward the head, and the plug rod includes a rod body and two sets of joints, which respectively protrude axially from the two opposite end faces of the rod body, and the set of joints can be detachably plugged into the socket. A ratchet wrench as described in claim 2, wherein the head sizes of the two adapters are different. A ratchet wrench as described in any one of claims 1 to 5, wherein the first base is rotatably arranged on a first assembly portion of the main body with a first swing axis as the axis, and the first rotation axis and the first swing axis are in a non-intersecting configuration. The ratchet wrench as described in claim 6 further includes a second working head, which includes a second base, a second ratchet and the driving head. The second base is rotatably arranged on a second connecting portion of the main body with a second swing axis as the axis, and the second swing axis is transverse to the first swing axis. The second ratchet is rotatably arranged on the second base with a second rotating axis as the center. The second rotating axis and the second swing axis are intersectingly arranged. The driving head is arranged on the second ratchet with the second rotating axis as the center and is in a co-rotating relationship. A ratchet wrench as described in claim 7, wherein one of the first connecting portion and the second connecting portion is recessed with a connecting space, and the outer contour of the other includes two flat surfaces, and one of the first base and the second base is movably inserted into the connecting space, and the other is movably clamped against the two flat surfaces. A ratchet wrench as described in claim 7, wherein when the first rotating shaft and the second swing shaft are parallel to each other, the first working head does not exceed the second working head in the extension direction of the second swing shaft. The ratchet wrench as claimed in claim 4, wherein the cross-sectional profile of the rod and the cross-sectional profile of the body are both polygonal; the heads of the two adapters are of different sizes; the first base is rotatably arranged on a first assembly portion of the main body with a first swing axis as the axis, and the first rotating axis and the first swing axis are arranged in a non-intersecting manner; the ratchet wrench further includes a second working head The second working head includes a second base, a second ratchet and the driving head. The second base is rotatably arranged on a second connecting portion of the body with a second swing axis as the axis. The second swing axis is transverse to the first swing axis. The second ratchet is rotatably arranged on the second base with a second rotating axis as the center. The second rotating axis and the second swing axis are intersecting. The driving head is arranged on the second ratchet with the second rotating shaft as the center and is in a co-rotating relationship; one of the first connecting part and the second connecting part is recessed with a connecting space, and the outer contour of the other includes two flat surfaces, and one of the first base and the second base is swingably inserted into the connecting space, and the other is swingably clamped against the two flat surfaces; when the first rotating shaft and the second swinging shaft are parallel to each other, the first working head does not exceed the second working head in the extension direction of the second swinging shaft; in the direction of the first rotating shaft, the length of the body is greater than the length of the head; the size of each of the connecting heads corresponds to the size of the head of the adapter head assembled with it; the size of the driving head is different from the size of the heads of the two adapter heads.