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A connection device for quickly changing working heads

A technology of connecting device and working head, which is applied in the field of connecting device for quick replacement of working head, can solve the problems of complex structure of related connecting parts, falling off of working head, and no motion correlation, etc., so as to prevent the possibility of locking failure and improve transmission. The effect of torsion

Inactive Publication Date: 2017-11-28
SUMEC HARDWARE & TOOLS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the operating state is rotating around the axis, while the locking device is assembled along the axial direction, it can be seen that there is no kinematic relationship between the two
When the locking device is subjected to an external force from the axial direction, it is very easy to cause the locking failure, which will cause the danger of the working head falling off during work.
In addition, the structure of the related connectors in this invention is relatively complicated, which increases the processing difficulty and production cost

Method used

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  • A connection device for quickly changing working heads
  • A connection device for quickly changing working heads
  • A connection device for quickly changing working heads

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0033] Such as Figures 1 to 3 As shown, an electric tool 10 includes a tool housing 9 and a motor installed in the tool housing 9, a reduction mechanism, a switch, etc., wherein the output end of the drive unit formed by the motor and the reduction mechanism is connected to a connecting device.

[0034] The connection device is used to connect with the working head 4 with the inner hole convex rib 8, which includes a fixed rotary sleeve 2 that can be inserted into the working head 4, and a drive shaft that is sleeved in the fixed rotary sleeve 2 to provide rotational power 1.

[0035] The outer wall of the fixed rotary sleeve 2 is evenly provided with four grooves in the circumferential direc...

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Abstract

The invention discloses a connecting device capable of quickly changing a working head. The connecting device is used for connecting with a working head (4) with inner bore convex ribs (8), and is characterized by comprising a fixed rotary sleeve (2) which can be inserted into the working head (4), and a driving shaft (1) which is used for sleeving into the fixed rotary sleeve (2); the outer wall of the fixed rotary sleeve (2) is provided with at least one slot capable of matching with the inner bore convex ribs (8), a radial through hole (2.5) is machined in the slot surface (2.1) of the corresponding slot, a locking member is movably assembled in the through hole (2.5); and a locking working face (1.2) and a release working face (1.1) are machined on the driving shaft (1). The connecting device has the benefits that motion association exists between a locking device and a machine during operation, and only in a locking state, the working head can be driven to work, thus fundamentally putting an end to the possibility of locking failure during operation.

Description

technical field [0001] The invention belongs to the technical field of electric tools, and in particular relates to a connecting device for quickly replacing a working head. Background technique [0002] Rotary tools with attached working head on the market, because there are many types of supporting working heads, they often need to be replaced in order to apply different working environments and objects. The traditional screw + wrench fixed replacement method is cumbersome and time-consuming, and it is inconvenient for the operator to use. low efficiency. [0003] The application number is "201380063983.7", and the invention title is "shaft for rotationally coupling the main device and the tubular device", which discloses a shaft for connecting the main device and the tubular device. In this invention, the main device is connected with the tubular device through a shaft, and the locked connection is realized through axial assembly and sequential fit during the connection ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F1/04B25F5/00
CPCB25F1/04B25F5/00
Inventor 刘楷蔡济波刘伟
Owner SUMEC HARDWARE & TOOLS
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