Fixed connection structure for rotary driving part

Abstract

The utility model relates to the technical field of rotation driving part assistance, in particular to a fixed connecting structure for a rotation driving part, which comprises a connecting rod and a sleeve, the connecting rod is connected with the rotation driving part, axial torque is provided for the connecting rod through the rotation driving part, and the sleeve is sleeved on the connecting rod and used for installing a working assembly. Torque output by the rotation driving piece is output to the working assembly through the connecting rod and the sleeve, and the connecting rod is further provided with an auxiliary fixing assembly used in cooperation with the working assembly. The problem that the part, used for fixing the tool bit, of the output end of an existing rotation driving piece is poor in universality is effectively solved. Through the arrangement of the first mounting holes and the second mounting holes with different sizes in the sleeve, the purpose of mounting a plurality of working components in the same sleeve can be achieved, and the step surface is arranged at one end, inserted into the sleeve, of the connecting rod, so that the purpose of better limiting the sleeve can be achieved through the step surface.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary installation technology for rotary drive components, and more specifically to a fixed connection structure for rotary drive components. Background Technology

[0002] A rotary drive is a device that drives a working component by rotation. This device can be manual, such as a screwdriver grip, which is driven by manual rotation by a person, and in turn, the working component on it rotates accordingly. The device can also be electric, such as a motor, which can output a certain torque after starting, and the torque is used to drive the corresponding working component to rotate.

[0003] Existing screwdrivers with detachable heads generally have a receiving groove in the screwdriver grip. By machining the tail of the screwdriver head into the same shape as the receiving groove, and placing the screwdriver head in the receiving groove, the screwdriver head can be driven by the screwdriver grip. However, this method of opening a receiving groove in the screwdriver grip can only accommodate screwdriver heads with a fixed tail size, and is not convenient for screwdriver heads with different tail sizes. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a fixed connection structure for a rotary drive component, which effectively solves the problem of poor universality of the existing rotary drive component output end for fixing the cutter head.

[0005] The technical solution provided by this utility model is a fixed connection structure for a rotating drive component, including a connecting rod and a sleeve. The connecting rod is connected to the rotating drive component, and the rotating drive component provides axial torque to the connecting rod. The sleeve is fitted onto the connecting rod for mounting a working component. The torque output by the rotating drive component is output to the working component through the connecting rod and the sleeve. The connecting rod is also provided with an auxiliary fixing component that works in conjunction with the working component.

[0006] The sleeve is characterized by having a first mounting hole and a second mounting hole. The cross-sections of the first mounting hole and the second mounting hole in the rotation direction are both polygonal for radial limiting of the working component. The cross-sectional area of ​​the first mounting hole in the rotation direction is greater than the cross-sectional area of ​​the second mounting hole in the rotation direction. The second mounting hole is detachably connected to the connecting rod via a limiting component.

[0007] Preferably, the limiting component includes a limiting groove and a limiting ball. There are two limiting grooves that are opened in parallel on the inner wall of the second mounting hole, and the limiting ball is inserted into one of the limiting grooves to limit the sleeve.

[0008] Preferably, the connecting rod is provided with a sliding groove for accommodating a limiting ball, and the limiting ball is slidably connected to the sliding groove by a spring.

[0009] Preferably, the center of the limiting ball is located inside the sliding groove, and the opening of the sliding groove is provided with an annular retaining plate that fits against the outer edge of the limiting ball.

[0010] Preferably, one end of the connecting rod that is inserted into the first mounting hole or the second mounting hole has the same multi-faceted edge as the first mounting hole or the second mounting hole, and the connecting rod is provided with a stepped surface that is inserted into the first mounting hole.

[0011] Preferably, the auxiliary fixing component is located at one end of the connecting rod that is inserted into the first mounting hole or the second mounting hole.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention, through the setting of first and second mounting holes of different sizes within the sleeve, can achieve the purpose of installing multiple working components on the same sleeve. At the same time, the multi-faceted design of the first and second mounting holes and the connecting rod can limit the axial direction of the sleeve, allowing for better rotation during the rotation of the connecting rod. Furthermore, a stepped surface is provided at one end of the connecting rod inserted into the sleeve, with the end of the connecting rod inserted into the sleeve corresponding to the second mounting hole and the stepped surface corresponding to the first mounting hole, thereby achieving better limiting of the sleeve. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional right view structural diagram of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after removing the sleeve;

[0017] Figure 4 This is a bottom view of the sleeve structure in this utility model;

[0018] Figure 5 This is a cross-sectional view of the sleeve in this utility model from below.

[0019] In the figure, 1-connecting rod; 2-sleeve; 3-auxiliary fixing component; 4-first mounting hole; 5-second mounting hole; 6-limiting groove; 7-limiting ball; 8-sliding groove; 9-spring; 10-annular retaining plate; 11-stepped surface. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Refer to the instruction manual appendix Figure 1-5 A fixed connection structure for a rotating drive component includes a connecting rod 1 and a sleeve 2. The connecting rod 1 is connected to the rotating drive component. When the rotating drive component is started, it provides a corresponding torque along the axial direction of the rotating drive component to the connecting rod 1. The sleeve 2 is fitted onto the connecting rod 1. The torque output of the rotating drive component is transmitted to the sleeve 2. The working component is installed on the sleeve 2. The rotation of the working component is achieved by limiting the working component through the sleeve 2.

[0022] The connecting rod 1 is also equipped with an auxiliary fixing component that works in conjunction with the working component. Since the working component is generally made of a high-hardness alloy, it is simpler and more suitable to use a magnet that is fixedly installed at the end of the connecting rod 1 as the auxiliary fixing component. Alternatively, a mechanical structure for fixing can be used, but compared to a magnet, the mechanical structure is more complex and it is not easy to disassemble the working component.

[0023] An auxiliary fixing component is located at one end of the connecting rod 1 that is inserted into the first mounting hole 4 or the second mounting hole 5, and the working component is fixed by the auxiliary fixing component.

[0024] The sleeve 2 is provided with a first mounting hole 4 and a second mounting hole 5. The cross-sectional area of ​​the second mounting hole 5 in the rotation direction is smaller than that of the first mounting hole 4 in the rotation direction. By setting the first mounting hole 4 and the second mounting hole 5, a sleeve 2 can have multiple fitting diameters, and more working components of different sizes can be installed.

[0025] Both the first mounting hole 4 and the second mounting hole 5 have polygonal cross-sections in the rotation direction. The polygonal edges act as locking and limiting points, while the edges can transfer torque to the working component.

[0026] The second mounting hole 5 is connected to the connecting rod 1 by a limiting component. The limiting component includes a limiting groove 6 and a limiting ball 7. The limiting groove 6 is formed on the inner wall of the second mounting hole 5 and consists of two parallel grooves. The limiting ball 7 is inserted into the limiting groove 6 to limit its position. At the same time, the limiting ball 7 is slidably connected to the sliding groove 8 by a spring 9. The spring 9 enables the limiting ball 7 to be inserted into the limiting groove 6 for a long time without the action of external force.

[0027] The center of the limiting ball 7 is located inside the sliding groove 8. At the same time, the opening of the sliding groove 8 is provided with an annular retaining plate 10 that fits against the outer edge of the limiting ball 7. The cross-section of the edge of the annular retaining plate 10 that contacts the limiting ball 7 is a small circle.

[0028] One end of the connecting rod 1 that is inserted into the first mounting hole 4 or the second mounting hole 5 has the same multi-faceted edge as the first mounting hole 4 or the second mounting hole 5, which allows for better connection with the rotating drive component.

[0029] The connecting rod 1 is also provided with a stepped surface 11 that can be inserted into the first mounting hole 4. The stepped surface 11 is the same size as the first mounting hole 4 when the connecting rod 1 is inserted from one side of the first mounting hole 4. The stepped surface 11 can be inserted into the first mounting hole 4 at the same time to limit the sleeve 2.

[0030] The connecting rod 1, the first mounting hole 4 and the second mounting hole 5 are made of hexagonal prisms, which are commonly used in machining. Hexagonal prisms can better bear force.

[0031] To better and faster determine the dimensions of the first mounting hole 4 and the second mounting hole 5, the outer edge of the sleeve 2 is engraved with dimension values ​​corresponding to the positions of the first mounting hole 4 or the second mounting hole 5.

[0032] When using this utility model, the operator first connects one end of the connecting rod 1 to the rotating drive component. In the polygonal prism posture of the connecting rod 1, the rotating drive component can limit the rotation direction of the connecting rod 1. At the same time, a slot is provided on the connecting rod 1, and the axial direction of the rotating drive component is limited by connecting the slot with the existing limiting structure on the rotating drive component.

[0033] After the connecting rod 1 is in position, the operator selects a suitable size and installs the sleeve 2 onto the end of the connecting rod 1 away from the rotating drive component. When the sleeve 2 is installed on the connecting rod 1, the first mounting hole 4 or the second mounting hole 5 mates with the connecting rod 1. At the same time, the limiting ball 7 on the connecting rod 1 is inserted into the limiting groove 6 to limit the connecting rod 1 in the axial direction. Since the center of the limiting ball 7 is inside the sliding groove 8, the sleeve 2 can be manually removed from the connecting rod 1 for replacement when subjected to a large external force.

[0034] This utility model, through the setting of first mounting holes 4 and second mounting holes 5 of different sizes inside the sleeve 2, can achieve the purpose of installing multiple working components on the same sleeve 2. At the same time, the multi-faceted setting of the first mounting hole 4, the second mounting hole 5 and the connecting rod 1 can limit the axial direction of the sleeve 2, and can better rotate during the rotation of the connecting rod 1. Moreover, a stepped surface 11 is provided at one end of the connecting rod 1 inserted into the sleeve 2. The end of the connecting rod 1 inserted into the sleeve 2 corresponds to the second mounting hole 5, and the stepped surface 11 corresponds to the first mounting hole 4, thereby achieving the purpose of better limiting the sleeve 2.

Claims

1. A fixed connection structure for a rotating drive component, comprising a connecting rod (1) and a sleeve (2), wherein the connecting rod (1) is connected to the rotating drive component, and the rotating drive component provides axial torque to the connecting rod (1), and the sleeve (2) is fitted onto the connecting rod (1) for mounting a working component, wherein the torque output by the rotating drive component is output to the working component via the connecting rod (1) and the sleeve (2), and the connecting rod (1) is also provided with an auxiliary fixing component for use with the working component; Its features are, The sleeve (2) is provided with a first mounting hole (4) and a second mounting hole (5). The cross-sections of the first mounting hole (4) and the second mounting hole (5) in the rotation direction are both polygonal and used for radial positioning of the working component. The cross-sectional area of ​​the first mounting hole (4) in the rotation direction is greater than the cross-sectional area of ​​the second mounting hole (5) in the rotation direction. The second mounting hole (5) is connected to the connecting rod (1) by means of a positioning component.

2. The fixed connection structure for a rotation drive component according to claim 1, characterized in that: The limiting component includes a limiting groove (6) and a limiting ball (7). There are two limiting grooves (6) that are opened in parallel on the inner wall of the second mounting hole (5). The limiting ball (7) is inserted into one of the limiting grooves (6) to limit the sleeve (2).

3. The fixed connection structure for a rotation drive component according to claim 2, characterized in that: The connecting rod (1) is provided with a sliding groove (8) for accommodating the limiting ball (7), and the limiting ball (7) is slidably connected to the sliding groove (8) by a spring (9).

4. The fixed connection structure for a rotation drive component according to claim 3, characterized in that: The center of the limiting ball (7) is located inside the sliding groove (8), and the opening of the sliding groove (8) is provided with an annular plate (10) that fits against the outer edge of the limiting ball (7).

5. The fixed connection structure for a rotation drive component according to claim 4, characterized in that: The end of the connecting rod (1) that is inserted into the first mounting hole (4) or the second mounting hole (5) has the same multi-faceted edge as the first mounting hole (4) or the second mounting hole (5), and the connecting rod (1) is provided with a stepped surface (11) that is inserted into the first mounting hole (4).

6. The fixed connection structure for a rotation drive component according to claim 5, characterized in that: The auxiliary fixing component is located at one end of the connecting rod (1) that is inserted into the first mounting hole (4) or the second mounting hole (5).

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