CN222680793U - Labor-saving wrench - Google Patents

Abstract

The utility model discloses a labor-saving wrench, and belongs to the technical field of tools. The wrench comprises a wrench head and a handle, wherein the wrench head comprises a shell and an output piece, the output piece is rotationally connected with the shell, the shell is rotationally connected with a rotating piece, two gears are rotationally connected to the rotating piece, the two gears are coaxially arranged and are fixedly connected with each other, the shell is fixedly connected with a first annular gear, the output piece is fixedly connected with a second annular gear, the two gears are respectively meshed with the first annular gear and the second annular gear, and the utility model can realize labor saving by utilizing the transmission ratio between the gears and the second annular gear by utilizing the mutual transmission between the gear piece and the first annular gear and the second annular gear.

Description

Labor-saving wrench

Technical Field

The utility model relates to the technical field of tools, in particular to a labor-saving wrench.

Background

The wrench is a common installation and disassembly tool, is a manual tool for screwing a bolt, a screw, a nut and other threads to tightly clamp an opening or a trepanning firmware of the bolt or the nut by utilizing the lever principle, can achieve a labor-saving effect only by changing the holding distance, cannot achieve a better labor-saving effect, and therefore needs a novel white color to solve the problem.

Disclosure of utility model

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and the appended drawings.

The utility model aims to overcome the defects and provide a labor-saving wrench.

The labor-saving wrench comprises a wrench head and a handle, wherein the wrench head comprises a shell and an output piece, the output piece is rotationally connected with the shell, the shell is rotationally connected with a rotating piece, two gears are rotationally connected to the rotating piece, the two gears are coaxially arranged and fixedly connected with each other, the shell is fixedly connected with a first annular gear, the output piece is fixedly connected with a second annular gear, and the two gears are respectively meshed with the first annular gear and the second annular gear.

Through adopting above-mentioned technical scheme, when loosening or tightening the bolt, establish output cover on the bolt, the rotating member is held to one hand, and the other hand grasps the handle, then promotes the handle and encircle the bolt and rotate, and the handle can drive the casing and encircle the rotating member and rotate, and ring gear one also can encircle the rotating member simultaneously to drive two gears that fix together and rotate together, the gear with ring gear two meshing will rotate and transmit for output through ring gear two, thereby lets output can unscrew the bolt, can utilize the transmission ratio between gear and the ring gear two to realize laborsaving through this kind of mode.

Preferably, the two gears are integrally formed into a gear member, the rotating member is provided with a rotating groove, the gear member is arranged in the rotating groove, the gear member is provided with a pin shaft in a penetrating manner, and the gear member is rotationally connected with the rotating member through the pin shaft.

The utility model utilizes the pin shaft to realize the rotation connection between the rotating piece and the gear piece.

Preferably, spacers are arranged on two sides of the gear piece, and the spacers are sleeved on the pin shaft. The utility model can separate the gear piece from the rotating piece by using the spacer, so that abrasion between the gear piece and the rotating piece can not occur.

Preferably, one end of the rotating member is rotatably connected with the housing through a bearing, and the other end of the rotating member is rotatably connected with the output member through a bearing. The utility model can reduce the resistance between the rotating part and the shell and between the rotating part and the output part by using the bearing, so that the rotating process is smoother and the abrasion is reduced.

Preferably, one side of the shell is provided with a first end cover for limiting the rotating member, the other side of the shell is provided with a second end cover for limiting the output member, and the rotating member and the output member can be limited by the first end cover and the second end cover, so that the rotating member and the output member cannot be separated from the shell.

Preferably, the first end cover and the second end cover are fixedly connected with the shell through bolts. The utility model uses the threaded connection between the bolt and the shell to enable the first end cover and the second end cover to be fixed between the bolt and the shell.

Preferably, the output piece comprises a rotating body and a sleeve, the sleeve is connected with the rotating body through a square pin, and the sleeve and the square pin are provided with insertion holes for inserting the bolts in a penetrating mode. According to the utility model, the sleeve is matched with the bolt, and the sleeve can be detached and replaced by pulling out the bolt from the jack, so that the inner gear ring II can adapt to bolts with different screw heads, and is formed on the rotating body.

Preferably, the handle is provided with a chute, a connecting piece is connected in the chute in a sliding way, the connecting piece is connected with a rotating handle in a threaded way, and the handle is clamped between the rotating handle and the connecting piece. The rotating handle can slide in the sliding groove and rotate, so that the handle can be rotated more conveniently by utilizing the rotating handle, and the length of the force arm can be adjusted according to the position of the rotating handle.

Preferably, the rotating member is fixedly connected with a handle. The utility model makes the rotating member easier to hold by the handle.

In summary, the beneficial effects of the utility model are as follows:

1. by utilizing the mutual transmission between the gear piece and the first and second annular gears, the labor saving can be realized by utilizing the transmission ratio between the gear and the second annular gears.

2. The rotating handle can slide in the sliding groove and rotate, so that the handle can be rotated more conveniently by utilizing the rotating handle, and meanwhile, the length of the force arm can be adjusted according to the position of the rotating handle.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

It is apparent that these and other objects of the present utility model will become more apparent from the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings and figures.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of the preferred embodiments, as illustrated in the accompanying drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model, without limitation to the utility model.

In the drawings, like parts are designated with like reference numerals and are illustrated schematically and are not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only one or several embodiments of the utility model, and that other drawings can be obtained according to such drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic view of an overall cross-sectional structure.

The main reference numerals are 1, a shell, 2, an output part, 3, a rotating part, 4, a first annular gear, 5, a second annular gear, 6, a gear part, 7, a rotating groove, 8, a pin shaft, 9, a spacer, 10, a bearing, 11, a first end cover, 12, a second end cover, 13, a rotator, 14, a sleeve, 15, a square pin, 16, an inserting hole, 17, a connecting part, 18, a rotating handle, 19, a handle, 20 and a handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the following detailed description. It should be understood that the detailed description is presented merely to illustrate the utility model, and is not intended to limit the utility model.

In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, directly connected, indirectly connected via an intermediate medium, or in communication with each other between two elements or in an interaction relationship between two elements. However, it is noted that direct connection indicates that the two bodies connected together do not form a connection relationship through a transition structure, but are connected together to form a whole through a connection structure. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1, a labor-saving wrench comprises a wrench head and a handle 20, wherein the wrench head comprises a shell 1 and an output piece 2, the output piece 2 is rotationally connected with the shell 1, the shell 1 is rotationally connected with a rotating piece 3, two gears are rotationally connected to the rotating piece 3 and coaxially arranged, the two gears are fixedly connected with each other, the shell 1 is fixedly connected with a first annular gear 4, the output piece 2 is fixedly connected with a second annular gear 5, and the two gears are respectively meshed with the first annular gear 4 and the second annular gear 5.

Through adopting above-mentioned technical scheme, when loosening or tightening the bolt, establish output 2 cover on the bolt, the rotating member 3 is held to one hand, the handle 20 is held to the other hand, then promote handle 20 and rotate around the bolt, handle 20 can drive casing 1 and rotate around rotating member 3, ring gear one 4 also can rotate around rotating member 3 simultaneously, thereby drive two gears that are fixed together and rotate together, the gear that meshes with ring gear two 5 will rotate and transmit for output 2 through ring gear two 5, thereby let output 2 can unscrew the bolt, can utilize the gear to realize laborsaving through this kind of mode between gear and the ring gear two 5.

Two gear integrated into one piece is gear piece 6, and rotatory groove 7 has been seted up to the rotating member 3, and gear piece 6 sets up in rotatory groove 7, and gear piece 6 runs through and is provided with round pin axle 8, and gear piece 6 rotates with rotating member 3 through round pin axle 8 to be connected. The rotational connection between the rotary part 3 and the gear part 6 is realized by means of a pin 8.

The two sides of the gear piece 6 are provided with a spacer 9, and the spacer 9 is sleeved on the pin shaft 8. The gear member 6 can be spaced from the rotary member 3 by the spacer 9 so that no wear occurs between the gear member 6 and the rotary member 3.

One end of the rotating member 3 is rotatably connected with the housing 1 through a bearing 10, and the other end of the rotating member 3 is rotatably connected with the output member 2 through the bearing 10. The use of the bearing 10 reduces the resistance between the rotating member 3 and the housing 1 and the output member 2, makes the rotating process smoother and reduces wear.

One side of the shell 1 is provided with a first end cover 11 for limiting the rotating piece 3, the other side of the shell 1 is provided with a second end cover 12 for limiting the output piece 2, and the rotating piece 3 and the output piece 2 can be limited by the first end cover 11 and the second end cover 12 so that the rotating piece and the output piece 2 cannot be separated from the shell 1.

The first end cover 11 and the second end cover 12 are fixedly connected with the shell 1 through bolts. The first end cap 11 and the second end cap 12 can be fixed between the bolt and the housing 1 by means of a threaded connection between the bolt and the housing 1.

The output member 2 includes a rotor 13 and a sleeve 14, the sleeve 14 is connected to the rotor 13 by a square pin 15, and the sleeve 14 and the square pin 15 are provided with insertion holes 16 for inserting bolts therethrough. Through sleeve 14 and bolt cooperation, sleeve 14 can be through extracting the bolt from jack 16 and dismantle the change to can adapt to the bolt of different spiral heads, ring gear two 5 shaping is on rotor 13.

The handle 20 is provided with a chute, a connecting piece 17 is connected in the chute in a sliding way, the connecting piece 17 is connected with a rotating handle 18 in a threaded way, and the handle 20 is clamped between the rotating handle 18 and the connecting piece 17. The turning handle 18 can slide in the sliding groove and rotate, so that the handle 20 can be rotated more conveniently by using the turning handle 18, and meanwhile, the length of the force arm can be adjusted by adjusting the position of the turning handle 18 according to the requirement.

The rotary member 3 is fixedly connected with a handle 19. The rotatable member 3 is made easier to hold by means of the handle 19.

It should be noted that while the above description sets forth numerous specific details for a thorough understanding of the present utility model, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.

Claims (9)

1. A labor-saving wrench, comprising a wrench head and a handle (20), characterized in that: the wrench head comprises a shell (1) and an output member (2), the output member (2) is rotatably connected to the shell (1), the shell (1) is rotatably connected to a rotating member (3), the rotating member (3) is rotatably connected to two gears, the two gears are coaxially arranged, and the two gears are fixedly connected to each other, the shell (1) is fixedly connected to an inner gear ring 1 (4), the output member (2) is fixedly connected to an inner gear ring 2 (5), and the two gears are respectively meshed with the inner gear ring 1 (4) and the inner gear ring 2 (5). 2. The labor-saving wrench according to claim 1 is characterized in that: the two gears are integrally formed into a gear member (6), the rotating member (3) is provided with a rotating groove (7), the gear member (6) is arranged in the rotating groove (7), the gear member (6) is penetrated by a pin shaft (8), and the gear member (6) is rotatably connected to the rotating member (3) through the pin shaft (8). 3. The labor-saving wrench according to claim 2, characterized in that: spacers (9) are arranged on both sides of the gear member (6), and the spacers (9) are sleeved on the pin shaft (8). 4. The labor-saving wrench according to claim 1 is characterized in that one end of the rotating member (3) is rotatably connected to the housing (1) through a bearing (10), and the other end of the rotating member (3) is rotatably connected to the output member (2) through a bearing (10). 5. The labor-saving wrench according to claim 1 is characterized in that: one side of the shell (1) is provided with an end cover (11) for limiting the position of the rotating member (3), and the other side of the shell (1) is provided with an end cover (12) for limiting the position of the output member (2). 6. The labor-saving wrench according to claim 5, characterized in that the end cover 1 (11) and the end cover 2 (12) are both fixedly connected to the housing (1) by bolts. 7. The labor-saving wrench according to claim 1 is characterized in that: the output member (2) includes a rotating body (13) and a sleeve (14), the sleeve (14) is connected to the rotating body (13) through a square pin (15), and a socket (16) for inserting a pin is formed through the sleeve (14) and the square pin (15). 8. The labor-saving wrench according to claim 1 is characterized in that: the handle (20) is provided with a slide groove, a connecting piece (17) is slidably connected in the slide groove, the connecting piece (17) is threadedly connected to a rotating handle (18), and the handle (20) is clamped between the rotating handle (18) and the connecting piece (17). 9. The labor-saving wrench according to claim 1, characterized in that the rotating member (3) is fixedly connected to a handle (19).