Wrench for narrow space

Abstract

The utility model relates to the technical field of mechanical tools, in particular to a wrench for a narrow space, which comprises a rotating rod, a driving gear fixedly connected to the bottom of the rotating rod, a first half gear and a second half gear meshed with the driving gear, the first half gear and the second half gear are symmetrically arranged, and the first half gear and the second half gear are meshed with the driving gear. And fixing structures are arranged in the first half gear and the second half gear. Through the rotating rod, the driving gear, the semicircular first tooth part and the semicircular second tooth part, advantages can be played in a narrow space, parts can be in multi-angle contact, the use range is expanded, the grabbing force can be enhanced through the fixing structure, slipping is prevented, the structure is simple, and manufacturing and operation are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical tool technical field, specifically point to a spanner for narrow space. BACKGROUND

[0002] When the screw or nut is tightened and loosened in the narrow space, the traditional spanner cannot be effectively used because of the large size or inconvenient operation, which leads to the fact that a lot of time and energy are often spent to deal with the difficult-to-reach screw or nut in some dead corner scenes.

[0003] Therefore, it is necessary to develop a spanner for narrow space to solve the above problems existing in the prior art. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology, and to provide a spanner for narrow space.

[0005] In order to achieve the above purpose, the utility model provides a spanner for narrow space, which comprises a rotating rod, a driving gear is fixedly connected at the bottom of the rotating rod, two semicircular ring-shaped first half gears and second half gears are arranged in the driving gear, the first half gear and the second half gear are symmetrically arranged, and a fixing structure is arranged inside the first half gear and the second half gear.

[0006] Further, the fixing structure comprises a first fixing part and a second fixing part fixedly connected in the plane of the second half gear, and the first fixing part and the second fixing part are fan-shaped parts with equal size and symmetrically arranged.

[0007] Further, it further comprises a third fixing part and a fourth fixing part, the third fixing part and the fourth fixing part are symmetrically arranged with the first fixing part and the second fixing part and have equal size, and the third fixing part and the fourth fixing part are sleeved on the inner side of the first half gear.

[0008] Further, a fixing groove is formed between the first fixing part and the second fixing part and between the third fixing part and the fourth fixing part.

[0009] Further, the first fixing part and the third fixing part, and the second fixing part and the fourth fixing part are integrally formed.

[0010] The utility model has the advantages that the utility model provides a spanner for narrow space, which can play an advantage in narrow space through the rotating rod, the driving gear and the semicircular ring-shaped first and second tooth parts, can contact the components at multiple angles, expand the use range, can enhance the gripping force through the fixing structure, prevent slipping, and the structure is simple, convenient to manufacture and operate. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a wrench for narrow space according to the utility model;

[0012] Figure 2 is a wrench for narrow space according to the utility model;

[0013] Figure 3 is a wrench for narrow space according to the utility model.

[0014] As shown in the figure: 1, first half gear; 2, second half gear; 3, first fixed part; 4, second fixed part; 5, third fixed part; 6, fourth fixed part; 7, drive gear; 8, rotating rod. DETAILED DESCRIPTION

[0015] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0016] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0017] In the description of the embodiments of the utility model, if a certain feature is referred to as "set", "fixed", "connected", "installed" on another feature, it can be directly set, fixed, connected or installed on another feature, or indirectly set, fixed, connected or installed on another feature.

[0018] In the description of the embodiments of the utility model, if it involves "several", its meaning is more than one, if it involves "multiple", its meaning is more than two, if it involves "greater than", "less than", "exceed", should all be understood as not including the number, if it involves "above", "below", "within", should all be understood as including the number. If it involves "first", "second", should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0019] The utility model will be further explained in detail in combination with the drawings.

[0020] In combination with the drawings Figure 1 to the drawings Figure 3 As shown in the drawings, the embodiment provides a wrench for narrow space, the bottom of the rotating rod 8 is fixedly connected with the driving gear 7, the first half gear 1 and the second half gear 2 that are mutually engaged with the driving gear 7 are provided with two semicircular rings, the first half gear 1 and the second half gear 2 are symmetrically arranged, and the first half gear 1 and the second half gear 2 are provided with fixed structures inside.

[0021] It can be understood that the utility model provides a wrench for narrow space, which comprises a rotating rod 8 as the operating part of the wrench, can be held and force is applied by the user, the bottom of the rotating rod 8 is fixedly connected with the driving gear 7, the driving gear 7 is circular, the first half gear 1 and the second half gear 2 that are mutually engaged with the driving gear 7 are provided with two semicircular rings, and the two tooth parts are symmetrically distributed, the semicircular shape makes them can be surrounded from different angles Nut or bolt operation, better fit the operating object in narrow space, the symmetric arrangement of the first half gear 1 and the second half gear 2 ensures that the wrench is uniformly stressed when operating, avoids the offset or unstable condition caused by the asymmetric structure, and the fixed structure is further arranged in the first half gear 1 and the second half gear 2, which can more firmly clamp the nut or bolt, and ensure that the wrench does not slip during operation. When the user rotates the rotating rod 8, the driving gear 7 drives the first half gear 1 and the second half gear 2 to move, and then the operation of the nut or bolt and other components is realized. The utility model provides a wrench for narrow space, which can play an advantage in narrow space through the rotating rod 8, the driving gear 7 and the semicircular first and second tooth parts, can contact the components at multiple angles, expand the use range, can enhance the gripping force through the fixed structure, prevent slipping, and the structure is simple, convenient to manufacture and operate.

[0022] In combination with the drawings Figure 1 to the drawings Figure 2As shown, the fixing structure comprises a first fixing part 3 and a second fixing part 4 fixedly connected in the plane of the second half gear 2, the first fixing part 3 and the second fixing part 4 are symmetrical and equal in size.

[0023] In combination with the accompanying Figure 1 to the accompanying Figure 3 As shown, the fixing structure comprises a first fixing part 3 and a second fixing part 4 fixedly connected in the plane of the second half gear 2, the first fixing part 3 and the second fixing part 4 are symmetrical and equal in size.

[0024] In combination with the accompanying Figure 1 to the accompanying Figure 3 As shown, the fixing structure comprises a first fixing part 3 and a second fixing part 4 fixedly connected in the plane of the second half gear 2, the first fixing part 3 and the second fixing part 4 are symmetrical and equal in size.

[0025] Further, the first fixing part 3 and the third fixing part 5, the second fixing part 4 and the fourth fixing part 6 are integrally formed.

[0026] The above has described the utility model and its implementation mode, this kind of description does not have the limitation, the shown in the drawing is only one of the implementation mode of the utility model, the actual structure is not limited to this. In general, if the ordinary skill in the art is inspired, without departing from the utility model creation tenet, does not create the structure mode and the embodiment similar to this technical scheme without the creative design, all should belong to the protection scope of the utility model.

Claims

1. A wrench for use in confined spaces, characterized in that: It includes a rotating rod, the bottom of which is fixedly connected to a drive gear. Two semi-circular annular first half gears and second half gears are provided and mesh with the drive gear. The first half gears and second half gears are symmetrically arranged, and the first half gears and second half gears have a fixed structure inside.

2. A wrench for use in confined spaces according to claim 1, characterized in that: The fixing structure includes a first fixing part and a second fixing part fixedly connected to the plane of the second half gear. The first fixing part and the second fixing part are fan-shaped with equal size and symmetrical arrangement.

3. A wrench for use in confined spaces according to claim 2, characterized in that: It also includes a third fixing part and a fourth fixing part, which are symmetrically arranged with the first fixing part and the second fixing part and are equal in size. The third fixing part and the fourth fixing part are sleeved on the inner side of the first half gear.

4. A wrench for use in confined spaces according to claim 3, characterized in that: A fixing groove is formed between the first fixing part and the second fixing part, and between the third fixing part and the fourth fixing part.

5. A wrench for use in confined spaces according to claim 3, characterized in that: The first fixing part and the third fixing part, the second fixing part and the fourth fixing part are integrally formed.

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