CN2543636Y

CN2543636Y - Transmission axle locking mechanism for drill type electric tool

Info

Publication number: CN2543636Y
Application number: CN 02220802
Authority: CN
Inventors: 张晓玉
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2002-05-23
Filing date: 2002-05-23
Publication date: 2003-04-09
Anticipated expiration: 2012-05-23

Abstract

The utility model relates to a transmission axle locking mechanism for drill type electric tool. The drill type electric tool comprises at least comprising an outside shell[11], a driven gear[5], a transmission shaft[7], a driving gear[10] and an operation head[8]. The transmission axle locking mechanism includes a push button[1], a push rod[13] which is connected with the push button[1], a lockpin[4] which is arranged at the front end of the push rod[13] and an axial jack[6] which is excavated on the end face of the driven gear[5]. The first operation position of the lokcpin[4] away from the jack[6], and the second operation position of the lockpin[4] is inserted into the jack[6]. In the locking operation of the axle, pushing the button and slowly turning the operation head, thus, the driven gear is impelled to rotate, then the head part of the lockpin is plugged into the jack at the end face of the driven gear; the operation is easy and the structure is simple.

Description

The power transmission shaft locking mechanism of drill type electric tool

Technical field

The utility model relates to a kind of drill type electric tool, for example the power transmission shaft locking mechanism of electric hammer, percussion drill and so on.

Background technology

In the prior art, drill bit need be installed and lock to electronic power drill in use often, the head that will change jobs sometimes, and the main shaft that at this moment requires to be connected with drill gun can pin, and makes main shaft not rotate, and at this moment can turn working head.The lock mode of transmission has two kinds, and a kind of is wrench and key lock compact form, and it is to leave the position that is used for fixing wrench at the front end of auger spindle or interlude, during loading and unloading, insert with wrench and to make auger spindle motionless, come the loading and unloading head with the drill gun key, this mode need increase annex, operation inconvenience.Another kind is the button latch compact form, adopt the form of contained spring pin and outer button combination, press the button, make auger spindle motionless in the aperture of spring catch insertion gear face, at this moment can the clamping drill bit, but since button to press down direction vertical mutually with the direction of motion of spring catch, so its transmission mechanism complexity, occupation space is bigger.

Summary of the invention

The purpose of this utility model is to provide a kind of and can satisfies under the condition of little space, makes that main shaft can be at the power transmission shaft locking mechanism of the drill type electric tool that does not have to lock under the situation of external tool.

The technical solution of the utility model is: a kind of power transmission shaft locking mechanism of drill type electric tool, at least the power transmission shaft that comprises shell body, driven gear, is fixedly connected with the axial region of described driven gear, the driving gear that is meshed with described driven gear, the working head that is arranged at the outer end of described power transmission shaft, on the described power transmission shaft or driven gear be provided with the power transmission shaft locking mechanism; Axial jack on push rod, the lock pin that is positioned at the leading section of described push rod that described power transmission shaft locking mechanism comprises push button, connect as one with push button, the end face that is arranged at described driven gear, the axial line of described axial jack departs from the axial line of described driven gear, first operating position of described lock pin is to break away from jack, and second operating position of described lock pin is that lock pin is inserted in the jack.

The utility model compared with prior art has following advantage:

When carrying out the lock shaft operation, promote knob, slowly rotation work head, driven gear is rotated, the lock pin head is inserted in the jack of driven gear end push button, push rod, the integrated setting of lock pin, therefore promote push button and can promote the lock pin action, easy to operate, simple in structure.

Description of drawings

Accompanying drawing 1 is structure master's cutaway view of drill type electric tool;

Accompanying drawing 2 is a structure for amplifying cutaway view of the present utility model;

Accompanying drawing 3 is the correspondence position graph of a relation of lock pin and jack; Wherein:

[1], push button; [2], stage clip; [3], power transmission shaft bracing frame; [4], lock pin; [5], driven gear; [6], jack; [7], power transmission shaft; [8], working head; [9], motor; [10], driving gear; [11], shell body; [12], confined planes; [13], push rod; [14], push rod sliding tray; [15], guide front end portion

The specific embodiment

Referring to accompanying drawing 1 to accompanying drawing 3, particularly referring to accompanying drawing 2, a kind of power transmission shaft locking mechanism of drill type electric tool, at least the power transmission shaft [7] that comprises shell body [11], driven gear [5], is fixedly connected with the axial region of described driven gear [5], the driving gear [10] that is meshed with described driven gear [5], the working head [8] of outer end that is arranged at described power transmission shaft [7], described driving gear [10] is a helical gear, and it is connected with the output shaft coaxial rigid of motor [9].Described power transmission shaft [7] is gone up or driven gear [5] is provided with the power transmission shaft locking mechanism; The lock pin [4] of the push rod [13] that described power transmission shaft locking mechanism comprises push button [1], connect as one with push button [1], the leading section that is positioned at described push rod [13], be arranged at the axial jack [6] on the end face of described driven gear [5], the axial line of described axial jack [6] departs from the axial line of described driven gear [5], first operating position of described lock pin [4] is to break away from jack [6], second operating position of described lock pin [4] is that lock pin [4] is inserted in the jack [6], makes that power transmission shaft [7] is locked motionless.

The rear side of described driven gear [5] is provided with power transmission shaft bracing frame [3], described push rod [13] passes described power transmission shaft bracing frame [3], the relative slip with power transmission shaft bracing frame [3] of push rod [13] is provided with, make push rod [13] in power transmission shaft bracing frame [3], to move, described push rod [13] contacts with an end of stage clip [2], the other end of stage clip [2] contacts with power transmission shaft bracing frame [3] or contacts with the inboard projection of casing, after unclamping push button [1], stage clip [2] makes lock pin [4] reset to second operating position from first operating position.Described power transmission shaft bracing frame [3] is provided with the axially extended push rod sliding tray [14] along power transmission shaft [7], casing [11] is provided with confined planes [12], described push rod [13] passes described push rod sliding tray [14], described push button [1] and confined planes [12] are when contacting, and described lock pin [4] is in second operating position.

Described push button [1], push rod [13], lock pin [4] are connected to one, and described push button [1] exposes the surface of described shell body [11], are convenient to push button [1] is operated.

Described lock pin [4] has a guide front end portion [15], and for example the leading section of lock pin [4] is that semicircle is spherical, as shown in Figure 3, can in time find when open state and the maloperation of the moment of shutting down.

Claims

1, a kind of power transmission shaft locking mechanism of drill type electric tool, at least the power transmission shaft [7] that comprises shell body [11], driven gear [5], is fixedly connected with the axial region of described driven gear [5], the driving gear [10] that is meshed with described driven gear [5], the working head [8] of outer end that is arranged at described power transmission shaft [7], described power transmission shaft [7] is gone up or driven gear [5] is provided with the power transmission shaft locking mechanism; It is characterized in that: the lock pin [4] of the push rod [13] that described power transmission shaft locking mechanism comprises push button [1], connect as one with push button [1], the leading section that is positioned at described push rod [13], be arranged at the axial jack [6] on the end face of described driven gear [5], the axial line of described axial jack [6] departs from the axial line of described driven gear [5], first operating position of described lock pin [4] is to break away from jack [6], and second operating position of described lock pin [4] is that lock pin [4] is inserted in the jack [6].

2, the power transmission shaft locking mechanism of drill type electric tool according to claim 1, it is characterized in that: the rear side of described driven gear [5] is provided with power transmission shaft bracing frame [3], described push rod [13] passes described power transmission shaft bracing frame [3], the setting of sliding mutually of push rod [13] and power transmission shaft bracing frame [3], described push rod [13] contacts with an end of stage clip [2], and the other end of stage clip [2] contacts with power transmission shaft bracing frame [3] or the inboard projection of casing.

3, the power transmission shaft locking mechanism of drill type electric tool according to claim 1 is characterized in that: described push button [1], push rod [13], lock pin [4] are connected to one, and described push button [1] exposes the surface of described shell body [11].

4, the power transmission shaft locking mechanism of drill type electric tool according to claim 2, it is characterized in that: described power transmission shaft bracing frame [3] is provided with the axially extended push rod sliding tray [14] along power transmission shaft [7], casing [11] is provided with confined planes [12], described push rod [13] passes described push rod sliding tray [14], described push button [1] and confined planes [12] are when contacting, and described lock pin [4] is in second operating position.

5, the power transmission shaft locking mechanism of drill type electric tool according to claim 1 is characterized in that: described lock pin [4] has a guide front end portion [15].