CN203426939U - Improvement structure of flexible spanner - Google Patents

Abstract

The utility model discloses an improved structure of a telescopic wrench, which includes a handle, a wrench lip fixed at one end of the handle, and a pulley fixed at the other end of the handle. A regular polygonal sleeve is arranged inside the sleeve, and the handle includes a sleeve. A sleeve, a fixing bolt and a connecting rod located in the sleeve, the sleeve is provided with a positioning hole, and the connecting rod is provided with at least 3 through holes equidistantly distributed, and the fixing bolt is connected between the positioning hole and the In a through hole, a keyway is provided on the outer surface of the connecting rod, and a raised line matching the keyway is provided on the inner surface of the sleeve. In the utility model, a keyway is provided on the outer surface of the connecting rod, and a convex line matching the keyway is provided on the inner surface of the sleeve. Due to the cooperation of the keyway and the convex line, the torsional moment is increased, which can prevent slipping , to avoid relative rotation between the connecting rod and the sleeve.

Description

An improved structure of a telescopic wrench

technical field

The utility model relates to a wrench, in particular to an improved structure of a telescopic wrench.

Background technique

An electric energy production and consumption system composed of power generation, transmission, transformation, distribution and consumption. Its function is to convert the primary energy in nature into electric energy through the power generation device, and then supply the electric energy to various users through power transmission, transformation and distribution. In order to realize this function, the power system also has corresponding information and control systems in various links and different levels to measure, adjust, control, protect, communicate and dispatch the production process of electric energy, so as to ensure that users can obtain safe, economical and high-quality products. of electric energy. The establishment of a large-scale power system with a reasonable structure is not only convenient for the centralized management, unified dispatch and distribution of electric energy production and consumption, reduces the total installed capacity, saves investment in power facilities, but also facilitates the rational development and utilization of regional energy resources, and satisfies the needs of the local people to a greater extent. The growing demand for electricity in the economy. Power system construction is often an important part of national and regional national economic development planning. The emergence of the power system, the use of high-efficiency, pollution-free, easy-to-use, and easy-to-control electric energy has been widely used, which has promoted changes in various fields of social production, created the era of electric power, and witnessed the second technological revolution. The scale and technical level of the power system have become one of the symbols of a country's economic development level.

In the fields of machining, production, assembly, and maintenance, a wrench is a commonly used tool. An adjustable wrench is the most common wrench. It is mainly used to tighten or loosen foot screws or nuts. Electricians commonly use 200, 250, and 300mm There are three types, which are selected according to the size of the nut when used. An adjustable wrench is generally composed of a flat wrench lip, an active wrench lip, a turbine, and a handle. When using it, hold the handle with the right hand. The closer the hand is to the back, the less effort it will make to wrench. When turning the small nut, you need to turn the worm wheel to adjust the size of the wrench. to fit the size of the nut.

In the industrial power grid, many electrical equipment are usually installed at high altitudes. Using an adjustable wrench needs to be twisted to change the angle, which is a waste of time and causes inconvenience in use. Since the length of the wrench is fixed, there are also problems in use and carrying. A certain inconvenience.

Utility model content

The purpose of the utility model is to provide an improved structure of the telescopic wrench, which solves the problems of insufficient torque and easy slippage of the telescopic wrench.

The purpose of this utility model is achieved through the following technical solutions:

An improved structure of a telescopic wrench, comprising a handle, a wrench lip fixed at one end of the handle, and a sleeve fixed at the other end of the handle, the sleeve is provided with a regular polygon socket, and the handle includes a sleeve, a fixing bolt and The connecting rod located in the sleeve, the sleeve is provided with a positioning hole, the connecting rod is provided with at least 3 through holes equally spaced, the fixing bolt is connected in the positioning hole and one of the through holes, A keyway is provided on the outer surface of the connecting rod, and a raised line matching the keyway is provided on the inner surface of the sleeve. The utility model changes the position of the connecting rod in the sleeve by adjusting the through hole connected with the fixing bolt to realize the expansion and contraction of the handle, thereby changing the length of the handle. Different types of bolts, screws, workpieces, etc. are easy to use and have strong versatility; by providing a keyway on the outer surface of the connecting rod and a convex line matching the keyway on the inner surface of the sleeve, the connection between the connecting rod and the sleeve can be increased. The consistency of the movement of the sleeve, when the wall thickness of the sleeve reaches a certain thickness, the structure of the position of the keyway and the convex strip can also be used interchangeably. During use, due to the cooperation of the keyway and the convex strip, the torsional moment is increased, and the To prevent slipping, avoid relative rotation between the connecting rod and the sleeve.

In order to make the use of the socket of the telescopic wrench more convenient, further, the telescopic wrench also includes an elbow for connecting the handle and the socket.

Since most bolts and screws are of hexagonal structure, in order to better cooperate with them, preferably, the shape of the above-mentioned socket is a regular hexagon.

Further, the above-mentioned pull lip includes a fixed pull lip, a movable pull lip and a turbine connected to the movable pull lip, and a non-reverse screw is arranged on the above-mentioned fixed pull lip, and the non-reverse screw is located on one side of the turbine. The non-reverse nail can prevent the turbine from rotating again after adjusting the size of the wrench and drive the movable lip to move to change the size of the wrench. The backstop is also able to rotate on the lever lip.

In order to enhance the strength of the retractable wrench, preferably, the above-mentioned handle, wrench lip, and socket are all made of chromium-vanadium alloy steel or nickel-chromium alloy steel.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1 The utility model is an improved structure of a telescopic wrench. By providing a keyway on the outer surface of the connecting rod and a raised line matching the keyway on the inner surface of the sleeve, the movement consistency between the connecting rod and the sleeve can be increased. , when the wall thickness of the sleeve reaches a certain thickness, it is also possible to adopt a structure in which the position of the keyway and the convex strip are interchanged. During use, due to the cooperation of the keyway and the convex strip, the torsional moment is increased, which can prevent slipping , to avoid the relative rotation between the connecting rod and the sleeve;

2. The utility model is an improved structure of a telescopic wrench, which is convenient to carry and use. One end of the wrench is a wrench lip, and the other end is a sleeve commonly used for socket wrenches. It is easy to use and has strong versatility; the sleeve and the handle are connected by an elbow. It is more labor-saving and convenient to use; the structure is simple and compact, the cost is low, the installation is convenient, and it is economical and applicable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Marks and corresponding component names in the attached drawings:

1-handle, 11-sleeve, 111-positioning hole, 12-connecting rod, 121-through hole, 13 fixing bolt, 2-wrench lip, 21-stay wrench lip, 22-active wrench lip, 23-turbine, 24 -Non-reverse nail, 3-sleeve, 31-sleeve, 4-elbow, 5-keyway, 6-protrusion.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example

As shown in FIG. 1 , the utility model is an improved structure of a telescopic wrench, which includes a handle 1 , a pull lip 2 , and a pulley 3 , wherein the pull lip 2 and the pulley 3 are respectively fixed at both ends of the handle 1 . A regular polygon socket 31 is arranged in the sleeve head 3; the handle 1 includes a sleeve 11, a fixing bolt 13 and a connecting rod 12 located in the sleeve 11, wherein a positioning hole 111 is arranged on the sleeve 11, and a positioning hole 111 is arranged on the connecting rod 12. There are at least 3 through holes 121 distributed at equal intervals. The fixing bolt 13 is connected in the positioning hole 111 and one of the through holes 121. The end of the sleeve 11 away from the connecting rod 12 is sealed and fixedly connected with the pull lip 2. The outer surface of the rod 12 is provided with a keyway 5 parallel to its axis, and the inner surface of the sleeve 11 is provided with a raised line 6 matching the keyway; in order to better fix the pull lip 2 and the sleeve 11 without affecting the use, The pull lip 2 and the sleeve 11 are molded in one piece, which is preferred in practical applications, but for the convenience of assembly and portability, the two can also be produced separately and then assembled and fixed together; it can be adjusted by The through hole 121 connected with the fixed bolt 13 changes the position of the connecting rod 12 in the sleeve 11 to realize the expansion and contraction of the handle 1, thereby changing the length of the handle 1 and making the wrench more convenient to use and carry; in addition, one end of the wrench in this solution is Wrench, 2, and the other end is a socket 3 commonly used for socket wrenches.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments in essence according to the technology of the utility model falls within the scope of the present invention. Into the scope of protection of the present utility model. the

Claims (5)

1. An improved structure of a telescopic wrench, including a handle (1), a wrench lip (2) fixed at one end of the handle (1), and a sleeve (3) fixed at the other end of the handle (1), the sleeve ( 3) There is a regular polygonal socket (31) inside, and it is characterized in that: the handle (1) includes a sleeve (11), a fixing bolt (13) and a connecting rod (12) inside the sleeve (11), The sleeve (11) is provided with positioning holes (111), the connecting rod (12) is provided with at least 3 through holes (121) distributed at equal intervals, and the fixing bolts (13) are connected to the positioning holes (111) and one of the through holes (121), a keyway (5) is provided on the outer surface of the connecting rod (12), and a raised line matching the keyway (5) is provided on the inner surface of the sleeve (11) (6). 2. The improved structure of a telescopic wrench according to claim 1, further comprising an elbow (4) for connecting the handle (1) and the socket (3). 3. The improved structure of a telescopic wrench according to claim 1, characterized in that, the shape of the socket (31) is a regular hexagon. 4. The improved structure of a telescopic wrench according to claim 1, characterized in that, the wrench lip (2) includes a dead wrench lip (21), a movable wrench lip (22), and a flexible wrench lip (22) ) connected to the turbine (23), the stopper lip (21) is provided with a backstop nail (24), and the backstop nail (24) is located on one side of the turbine (23). 5. The improved structure of a telescopic wrench according to any one of claims 1 to 4, characterized in that the handle (1), lip (2) and pulley (3) are all made of chrome vanadium alloy steel or nickel Made of chrome steel.

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