CN216299153U

CN216299153U - Narrow and small space fast dismounting tool based on gear engagement

Info

Publication number: CN216299153U
Application number: CN202122407410.6U
Authority: CN
Inventors: 朱姝; 王磊; 杨宇飞; 费瑞俊
Original assignee: Luoyang Institute of Electro Optical Equipment AVIC
Current assignee: Luoyang Institute of Electro Optical Equipment AVIC
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-15
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to a gear-meshing-based tool for quickly disassembling a narrow space, which comprises a handle, an upper half shaft, a transmission gear, a base and an end head, wherein the upper half shaft is provided with a radial through hole for mounting the handle, and the handle is movably connected with the radial through hole; the gear end of the transmission gear is meshed with the upper half shaft, and the other end of the transmission gear is fixedly connected with the upper end of the base; the end head is fixed at the lower end of the base. The handle is held by a hand, the end is aligned with the fastener, the handle is rotated, the upper half shaft transmits torque to the transmission gear through the meshing of the tooth parts, and then the end can be driven to rotate, and the fastener is installed or disassembled.

Description

Narrow and small space fast dismounting tool based on gear engagement

Technical Field

The utility model belongs to the field of mechanical assembly, and particularly relates to a fastener dismounting tool used in a narrow space.

Background

The fastener is widely applied to the field of mechanical assembly, and the spanner is an important tool for completing the process of dismounting the fastener and is a socket head wrench, a cross wrench, a straight wrench and the like which are commonly used. These wrenches all rely on the geometrical constraint between its outline and fastener to realize the assembly operation, and generally only be applicable to big operating space environment, have a lot of problems when using in narrow space. As shown in figure 1, the installation of the socket head cap screw is limited by the operation space, the wrench cannot rotate continuously after rotating for 30 degrees, at this time, because 6 surfaces of the screw matched with the wrench are not in the operation space, the wrench cannot be sleeved on the screw again to rotate continuously after being detached, the fastening process of the screw cannot be completed, and great difficulty is brought to the actual assembly process.

Disclosure of Invention

Technical problem to be solved

In order to avoid the defects of the prior art, the utility model provides a fastener dismounting tool for realizing torque transmission based on gear engagement, and aims to facilitate dismounting of a fastener located in a narrow space.

Technical scheme

A tool for quickly disassembling a narrow space based on gear engagement is characterized by comprising a handle, an upper half shaft, a transmission gear, a base and an end head, wherein the upper half shaft is provided with a radial through hole for mounting the handle, and the handle is movably connected with the radial through hole; the gear end of the transmission gear is meshed with the upper half shaft, and the other end of the transmission gear is fixedly connected with the upper end of the base; the end head is fixed at the lower end of the base.

The further technical scheme of the utility model is as follows: the check ring is positioned in the upper end of the base and is connected with the screw rod of the upper half shaft through threads to limit the upper half shaft from falling off the base.

The further technical scheme of the utility model is as follows: the other end of the transmission gear is connected with the base through threads.

The further technical scheme of the utility model is as follows: still include magnet, magnet passes through the epoxy glue to be fixed in the inside cylinder recess of base lower extreme.

The further technical scheme of the utility model is as follows: the end head is fixed in the inner hexagonal groove at the tail part of the base through the suction force of the magnet.

The further technical scheme of the utility model is as follows: the end head is an inner hexagonal wrench, a cross wrench or a straight wrench.

Advantageous effects

The tool for quickly disassembling the narrow space based on gear engagement is suitable for the narrow space, the end head of the tool can be replaced, and the universality is high; simple operation, time saving and labor saving. Compared with the prior art, the beneficial effects are as follows:

1. a tool which realizes small-angle controllable adjustable rotation by using a small-module gear meshing mode;

2. the rotation operation with the minimum angle of 18 degrees can be realized, and the two gears can be effectively separated, so that the integrity of the tool is ensured; 3. different types of heads can be selected to meet the assembly requirements of different fasteners.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is an installation view of a socket head cap screw;

FIG. 2 is a schematic external view of the present invention;

FIG. 3 is a schematic cross-sectional view of a structure of the present invention;

FIG. 4 is a schematic top half-axis view;

fig. 5 is a schematic view of a transmission gear.

Wherein in FIG. 2, 1-handle; 2-upper half shaft; 3-a transmission gear; 4-a base; 5-a retainer ring; 6-a magnet; 7-end.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 3-5, a fastener disassembling tool based on gear engagement comprises: handle 1, upper half axle 2, drive gear 3, base 4, retaining ring 5, magnet 6, end 7. The upper half shaft 2 is a cylinder, one end of the upper half shaft is provided with a radial through hole, the handle 1 is arranged in the radial through hole, and the handle 1 is movably connected with the radial through hole; the other end of the circular groove is a circular groove, the edge of the circular groove is an inner gear ring, a screw is arranged in the middle of the circular groove, and the tail end of the screw is provided with threads; one end of the transmission gear 3 is an external gear matched with the inner gear ring of the upper half shaft 2, the other end of the transmission gear is a hollow cylinder, and the outer ring of the hollow cylinder is provided with an external thread; the base 4 is a cylinder with holes at both ends, the holes at both ends are not communicated, the upper end of the upper end hole is provided with a section of internal thread matched with the transmission gear 3, and the check ring 5 is placed at the bottom of the upper end hole; the lower end of the base is provided with a cylindrical groove and an inner hexagonal groove, and the magnet 6 is fixed in the cylindrical groove in the base 4 through epoxy resin glue; the end head 7 is fixed in an inner hexagonal groove at the tail part of the base 4 through the suction force of the magnet 6, and the end head 7 can be selected in a matched mode according to the specification of a fastener and can be an inner hexagonal wrench, a cross wrench or a straight wrench.

The assembly relation is as follows: the thread end of the transmission gear 3 is in thread fit with the base 4, after the gear end of the transmission gear 3 is meshed with the tooth part of the upper half shaft 2, the screw rod of the upper half shaft 2 penetrates through the center hole of the transmission gear 3, and the thread at the tail end of the screw rod is in thread fit with the retainer ring 5.

The handle 1 is held by a hand, the end head 6 is aligned to the fastener, the handle 1 is rotated, the upper half shaft 2 transmits torque to the transmission gear 3 through meshing of the tooth parts, and then the end head 6 can be driven to rotate to install or disassemble the fastener.

When the handle 1 of the tool is rotated to the edge of the operation space in the narrow space shown in fig. 1, the handle 1 can be held by hand, and a force is applied in the axial direction of the upper half shaft 2, so that the tooth parts of the upper half shaft 2 and the transmission gear 3 are disengaged, and the upper half shaft 2 does not fall off the base 4 because the retaining ring 5 is in threaded connection with the upper half shaft 2 and the outer diameter of the retaining ring is larger than or equal to the diameter of the central hole of the transmission gear 3. And then, anticlockwise rotating for a certain angle to enable the handle 1 to rotate to the other edge of the operation space, putting the upper half shaft 2 into the transmission gear 3 again, and enabling the tooth parts of the upper half shaft and the transmission gear to be meshed again, so that the handle 1 can be rotated to continue the installation operation until the installation of the screw is completed.

The utility model is a tool which realizes small-angle controllable adjustable rotation by using a small-module gear meshing mode; the rotation operation with the minimum angle of 18 degrees can be realized, and the two gears can be effectively separated, so that the integrity of the tool is ensured; different types of heads can be selected to meet the assembly requirements of different fasteners.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.

Claims

1. A tool for quickly disassembling a narrow space based on gear engagement is characterized by comprising a handle (1), an upper half shaft (2), a transmission gear (3), a base (4) and an end (7), wherein the upper half shaft (2) is provided with a radial through hole for installing the handle (1), and the handle (1) is movably connected with the radial through hole; the end of the tooth of the transmission gear (3) is meshed with the upper half shaft (2), and the other end of the tooth is fixedly connected with the upper end of the base (4); the end head (7) is fixed at the lower end of the base (4).

2. The tool for rapidly disassembling the small space based on the gear engagement is characterized by further comprising a check ring (5), wherein the check ring (5) is positioned in the upper end of the base (4) and limits the upper half shaft (2) from falling off the base (4) through the connection of threads and a screw rod of the upper half shaft (2).

3. The tool for rapidly disassembling the narrow space based on gear meshing according to claim 1, wherein the other end of the transmission gear (3) is connected with the base (4) through threads.

4. The small space quick disassembling tool based on gear engagement according to claim 1, characterized by further comprising a magnet (5), wherein the magnet (5) is fixed in a cylindrical groove in the lower end of the base (4) through epoxy resin glue.

5. The small space quick disassembling tool based on gear engagement according to claim 4, characterized in that the end head (7) is fixed in a hexagonal socket at the tail of the base (4) through the attraction force of the magnet (5).

6. The tool for rapidly disassembling the narrow space based on the gear meshing is characterized in that the end head (7) is an inner hexagonal wrench, a cross wrench or a straight wrench.