CN106312897A - Connecting shaft for changing vertical direction of screwdriver head - Google Patents

Abstract

The invention discloses a connecting shaft for changing the vertical direction of a screwdriver head, which comprises a vertical redirecting shaft and a length adjusting rod closely connected between the vertical redirecting shafts. The vertical reversing shaft is composed of two bevel gears and a protective sleeve that fix the inner hexagonal rod. The left end of the inner hexagonal rod is installed with the inner hexagonal rod interface, and the two ends of the protective sleeve pass through rolling bearings. Fixed with the bearing circlip. The length adjustment rod is composed of inner hexagonal rods with different lengths and protective sleeves. The left end of the length adjustment rod is equipped with an inner hexagonal rod interface. The two ends of the protective sleeve also use rolling bearings and bearing retaining springs. fixed. The invention has the characteristics of transmitting power without loss, vertically changing the torque direction of conventional tools and being easy to adjust the length.

Description

A connecting shaft for changing the vertical direction of the screwdriver head

technical field

The invention relates to a connecting shaft, in particular to a connecting hard shaft which can vertically change the direction of torque transmission and has almost no power loss.

Background technique

In the application of hand tools, connecting shafts are often used. For example, in some specific occasions (such as equipment assembly), when disassembling screws, due to the small space for installing screws, using connecting shafts to cooperate with conventional tools, changing Torque direction for conventional tools. The invention patent with the application number CN200420116789.9 published by the Chinese Patent Office on October 12, 2005, which is called "universal flexible shaft", discloses a new type of flexible shaft that can be bent into curves of various shapes and transmitted power, and the length can be freely adjusted as needed. However, the universal flexible shaft has deficiencies such as excessively large vertical bending radius and increased resistance.

Contents of the invention

The problem to be solved by the present invention is to make up for the deficiencies of the existing universal flexible shaft. The present invention provides a new type of connecting hard shaft, which can transmit power without loss, and can vertically change the torque direction of conventional tools without being limited by the operating space. Restricted, and can freely adjust the length as needed.

To achieve the above object, the present invention adopts the following technical solutions:

A connecting shaft for changing the vertical direction of a screwdriver head, which comprises: a vertical redirecting shaft and a length adjusting rod closely connected between the vertical redirecting shafts. The vertical reversing shaft is composed of two bevel gears and a protective sleeve that fix the inner hexagonal rod. The left end of the inner hexagonal rod is installed with the inner hexagonal rod interface, and the two ends of the protective sleeve pass through rolling bearings. Fixed with the bearing circlip. The length adjustment rod is composed of inner hexagonal rods with different lengths and protective sleeves. The left end of the length adjustment rod is equipped with an inner hexagonal rod interface. Both ends of the protective sleeve also use rolling bearings and bearing retaining springs. fixed.

The beneficial effects of the present invention are:

1) The device of the present invention improves the connection structure design of the flexible shaft in the past, and adopts the vertical redirection of the bevel gear, which can better transmit the torsion force, and the bending radius is extremely small. Select the direction in which to apply the force.

2) The device of the present invention is made into specifications of different lengths and diameters, and with different joints, it can cooperate with conventional tools such as sleeves, inner hexagons, screwdriver heads, etc., and can greatly reduce the number of bolts and nuts. Operation difficulty, improve work efficiency.

3) The device of the present invention adopts a magnetic card slot connection structure, which has a simple structure and is very convenient for disassembly or assembly.

4) The length adjustment of the device of the present invention is very convenient. When there are different length requirements during work, just disassemble or assemble the required length and adjust the size of the rod.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention

Fig. 2 is a schematic diagram of the vertical redirection axis of the present invention

Fig. 3 is the schematic diagram of the length adjusting rod of the present invention

The marks in the figure are as follows: inner hexagonal rod 1, bevel gear 2, rolling bearing 3, bearing circlip 4, protective sleeve 5, inner hexagonal rod interface 6, ball rolling lubrication shaft 7.

detailed description

As shown in Figure 1, the connecting shaft mainly includes an inner hexagonal rod (1) for transmission, a bevel gear (2) for changing the vertical direction, a rolling bearing (3) for supporting and fixing the protective sleeve (5), The bearing circlip (4) and the inner hexagonal rod interface (6) connected to the inner hexagonal rod (1).

As shown in FIG. 2 , it is a schematic diagram of the vertical redirection axis in the present invention. The vertical reversing shaft is composed of two bevel gears (2) and protective sleeves (5) that fix the inner hexagonal rod (1). The two bevel gears (2) form a 90-degree angle and pass through the ball roller The lubricating shaft (7) is fixed, and the two ends of the protection sleeve (5) are fixed by rolling bearings (3) and bearing snap rings (4). One end of the vertical redirection shaft is equipped with a magnetic inner hexagonal interface (6).

As shown in FIG. 3 , it is a schematic diagram of the length adjusting rod of the present invention. The length adjustment rod is composed of inner hexagonal rods (1) with different lengths and protective sleeves (5), the left end of the length adjustment rod is equipped with a magnetic inner hexagonal rod interface (6), and the protective sleeve Both ends of the tube (5) are also fixed by rolling bearings (3) and bearing circlips (4)

In the application of the connecting shaft, first select a suitable length adjustment rod and a combination of the vertical reversing shaft, then fix one end of the combined connecting shaft on an appropriate part of the machine, and connect the other end to the rotating shaft of the power unit, that is The power or movement of the drive unit can be transmitted to associated components. Utilizing the connecting shaft of the present invention, the torsion force of the motor can be transmitted to the parts with narrow space and perpendicular to the torsion force, which is convenient to use and high in reliability, and greatly facilitates the installation and disassembly of equipment.

Claims (5)

1. A connecting shaft for changing the vertical direction of the screwdriver head, comprising: a vertical redirecting shaft and a length adjustment rod closely connected between the vertical redirecting shafts. The vertical reversing shaft is composed of two bevel gears (2) and a protective sleeve (5) on which the inner hexagonal rod (1) is fixed. The left end of the inner hexagonal rod (1) is installed with an inner hexagonal rod interface (6), and the two ends of the protection sleeve (5) are fixed by rolling bearings (3) and bearing circlips (4). The length adjustment rod is composed of inner hexagonal rods (1) with different lengths and protective sleeves (5), the left end of the length adjustment rod is equipped with an inner hexagonal rod interface (6), and the protective sleeve Both ends are fixed by rolling bearings (3) and bearing jumpers (4) equally. 2. The connecting shaft for changing the vertical direction of the screwdriver head according to claim 1, characterized in that the sealed environment formed by the protective sleeve (5) and the rolling bearing (3) is filled with a large amount of lubricant, which reduces the gear work. The resistance and the wear of the conical tooth surface. 3. The connecting shaft for changing the vertical direction of the screwdriver bit as claimed in claim 2, characterized in that said bevel gears (2) form an included angle of 90 degrees. 4. The connecting shaft for changing the vertical direction of the screwdriver head as claimed in claim 3, characterized in that the rolling bearing (3) is closely connected with the inner hexagonal rod (1) through elliptical gaskets connected by equal areas, and through The bearing jumper (4) is fixed. 5. The connecting shaft for changing the vertical direction of the screwdriver head according to claim 4, characterized in that the vertical redirection shaft is closely connected with the length adjustment rod through the inner hexagonal rod interface (6).