CN211248549U - Electric tool - Google Patents

Abstract

The utility model provides an electric tool, it includes: a housing (10); a motor (11) located within the housing; a transmission mechanism (12) located within the housing and connected to the motor; the working head (40) is arranged on the shell and connected with the transmission mechanism, and the shell is provided with: an operation member (13) which is exposed to the surface of the housing and is pushed by an operator to move; a lock member (14) that is movable between a lock position for locking the working head so that the working head cannot move relative to the housing and an unlock position for unlocking the lock; and movement direction changing mechanisms (13a, 14a) for moving the lock member in a direction intersecting the movement direction of the operation member in conjunction with the operation member. Adopt the utility model discloses, can improve operating element's operating performance.

Description

Electric tool

Technical Field

The utility model relates to an electric tool.

Background

There is a shear having a shear head as a working head, which is attached to a housing constituting a tool body and is rotatable to a plurality of rotational positions with respect to the housing, and which can be adapted to a plurality of orientations in which a shear object is placed or different postures of an operator (for example, patent document 1).

Further, an operation handle is provided on the housing, a protrusion is provided on the operation handle, a groove into which the protrusion is inserted and fitted is provided on an outer peripheral surface of the cutting head, and the cutting head is locked at a certain rotational position in a state where the protrusion is fitted into the groove. When the rotating position of the cutting head needs to be adjusted, an operator slides the operating handle to enable the protruding part on the operating handle to withdraw from the groove on the cutting head side, the clamping with the cutting head is released, at the moment, the cutting head is unlocked, and the rotating position of the cutting head can be freely adjusted.

However, since the position of the handle is close to the shearing head and the machining position, the handle is susceptible to the influence of chips and dust generated by the shearing operation. In the shear according to the prior art, however, a space (gap) for allowing the sliding of the lever needs to be provided in the housing, and chips and dust are likely to accumulate in the space, which affects the normal operation of the lever.

In addition, in a state where the shearing head is locked, chips, dust, and the like generated by shearing are accumulated in the concave groove and the convex portion of the outer peripheral surface of the shearing head. When the operation handle is slid backward, the protrusion is not smoothly fitted into the groove when the operation handle is returned, because the protrusion is separated from the groove and chips and dust accumulated in the vicinity enter the groove. In addition, the contact area of the operation handle with the finger is small, and thus the operability when the operation handle is slid backward is poor.

Patent document 1: CN105142835A

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide an electric power tool with excellent operability.

In order to achieve the above object, the present invention provides an electric tool, which includes: a housing; a motor located within the housing; the transmission mechanism is positioned in the shell and is connected with the motor; the working head is arranged on the shell and connected with the transmission mechanism, and the shell is provided with: an operation member exposed on a surface of the housing and moved by being pushed by an operator; a lock member movable between a lock position for locking the working head so that the working head cannot move relative to the housing and an unlock position for releasing the lock; and a movement direction changing mechanism that moves the lock member in a direction intersecting a movement direction of the operation member in conjunction with the operation member.

In the above configuration, the operating member (i.e., the push button type operating member) which is pushed and moved by the operator is provided on the housing, and the lock member is moved in a direction intersecting the moving direction of the operating member in conjunction with the operating member by the movement direction changing mechanism, and the lock position in which the lock shear head is locked so as not to be movable relative to the housing and the unlock position in which the lock position is released are switched. Further, since the operation member is configured as a push button type, that is, the operation member is only required to be pushed by the operator, operability is better than that of the operation member configured as a slide type.

The utility model discloses preferentially, the working head is installed with the mode that can rotate on the shell, locking part link in operating means, and locking the working head makes it can not for move between shell pivoted latched position and the unblock position of removing this locking.

The utility model discloses can be suitable for well in the electric tool that the operating head can adjust the turned position for the shell.

The utility model discloses it is preferred, direction of motion transform mechanism includes: the locking member includes a 1 st ramp portion provided on the operating member and a 2 nd ramp portion provided on the locking member in sliding contact with the 1 st ramp portion.

Since the movement direction changing structure is constituted by the inclined surface portions in sliding contact with each other, the electric power tool can be manufactured with a simple structure and at a low cost.

The utility model discloses preferably be equipped with the lantern ring part on the working head be equipped with the block groove on the terminal surface of the ascending tip of the axial of the lantern ring part be equipped with the protruding portion on the locking part, through the protruding portion inserts in the block groove and will the working head locking makes it can not for the shell rotates.

In the above configuration, since the engagement groove that engages with the lock member is provided on the end surface of the one end portion in the axial direction of the collar member, it is possible to prevent chips and dust from accumulating in the engagement groove and affecting the engagement operation, as compared with a configuration in which the engagement groove is provided on the outer peripheral surface.

The utility model discloses preferably be equipped with the antiskid portion that makes operator's finger hang easily on the outer peripheral face of the lantern ring part.

With the above configuration, the rotational position of the working head can be easily adjusted by the collar member.

Preferably, the anti-slip portion includes a plurality of concave portions and a plurality of convex portions which are alternately arranged in the circumferential direction.

The utility model discloses it is preferred still to be equipped with on the shell right the locking part to the application of force part of latched position application of force.

In addition, the utility model discloses can be applicable to the work head and be the cutter of shearing head.

Drawings

Fig. 1 is a side view of a shear according to an embodiment, wherein the shear head is in a 1 st rotational position;

FIG. 2 is a side cross-sectional view of the shear of FIG. 1;

FIG. 3 is a perspective view of the adjustment collar;

FIG. 4 is a perspective view of the locking member;

FIG. 5 is a top cross-sectional view of the front portion of the shear, including the protective shear head, with the adjustment collar in a locked condition;

FIG. 6 is a transverse cross-sectional view of the shear taken through a cross-sectional plane of the adjustment collar, wherein the adjustment collar is in a locked condition;

FIG. 7 is the same cross-sectional view as FIG. 5 with the adjustment collar in an unlocked condition;

FIG. 8 is a view corresponding to FIG. 6 with the adjustment collar in an unlocked condition;

fig. 9 is a side view of the shear with the shear head in the 2 nd rotational position;

fig. 10 is a view corresponding to fig. 5 with the cutting head in the 2 nd rotational position;

fig. 11 is a view corresponding to fig. 6 when the cutting head is in the 2 nd rotational position.

Description of the reference numerals

100. Shears (electric tools); 10. a housing; 11. an electric motor; 12. a transmission mechanism; 13. an operating member; 13a, an inclined plane part (1 st inclined plane part); 14. a locking member; 14a, a bevel portion (bevel 2 nd); 15. a return spring; 20. a handle; 21. a trigger-type switch; 30. a battery; 40. a shearing head (working head); 41. a shear head body; 42. an adjustment collar (collar member); 421. an anti-slip portion; 421a, a recess; 421b, a convex part; 423. a groove (a clamping groove).

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Fig. 1 is a side view of a shear according to an embodiment, wherein the shear head is in a 1 st rotational position; fig. 2 is a side cross-sectional view of the shear of fig. 1.

As shown in fig. 1 and 2, a shear 100 as an example of an electric tool of the present invention includes a housing 10, and an electric motor 11 and a transmission mechanism 12 connected to the electric motor 11 are housed in the housing 10. A handle 20 is connected to the rear of the housing 10, and a trigger switch 21 is provided on the handle 20. A battery 30 is detachably mounted below the housing 10 and the handle 20. A cutting head 40 as a working head is attached to the front of the housing 10, and the cutting head 40 is connected to the transmission mechanism 12. Specifically, the cutting head 40 includes a fixed blade 43 and a movable blade 44, the fixed blade 43 and the movable blade 44 are connected by a rotating shaft 45, and the movable blade 44 is connected to a cam mechanism 122 attached to an output shaft 121 of the transmission mechanism 12.

When the operator pulls the trigger switch 21, the electric power of the battery 30 is supplied to the electric motor 11, the power of the electric motor 11 is transmitted to the transmission mechanism 12, the cam mechanism 122 attached to the output shaft 121 of the transmission mechanism 12 rotates, and the movable blade 44 of the cutting head 40 is driven to swing up and down about the rotating shaft 45 with respect to the fixed blade 43, thereby enabling the cutting work to be performed.

The shear head 40 includes a shear head body 41 and an adjustment collar 42 (collar member) fixed to the shear head body 41, and the adjustment collar 42 is substantially annular and is attached to the front portion of the housing 10 so as to be rotatable about the axial direction thereof. The adjusting collar 42 can be rotated by an operator to adjust the rotational position of the cutting head 40, so that the cutting head 40 can be adapted to various placement angles of the object to be processed or different operation postures of the operator. As shown in fig. 1 and 3, a plurality of recesses 421a and protrusions 421b are provided on the outer peripheral surface of the adjustment collar 42 so as to be alternately arranged in the circumferential direction, and these recesses 421a and protrusions 421b constitute a slip prevention portion 421 for facilitating the catching of the fingers of the operator. In the present embodiment, the plurality of convex portions 421b have a common base portion 421c and are formed in a zigzag shape extending forward in a side view.

As shown in fig. 1 and 5, a push button type operation member 13 is exposed on the left side surface of the front portion of the housing 10, a lock member 14 is provided inside the operation member 13 to be interlocked therewith, and the lock member 14 is biased forward by a return spring 15 (biasing member).

Fig. 4 is a perspective view of the lock member 14. As shown in fig. 4, the locking member 14 has a pair of projections 141 projecting forward. As shown in fig. 3, a plurality of recessed grooves 423 (engagement grooves) are formed in a rear end surface 422 (an end surface at one end in the axial direction) of the adjustment collar 42 and arranged in the circumferential direction, and the plurality of recessed grooves 423 are partitioned by the support column portions 424. As shown in fig. 6, the pair of projections 141 of the lock member 14 can be inserted and fitted (engaged) into the adjacent two grooves 423, and thus the lock member 14 is engaged with the adjustment collar 42 and locked in a locked state in which it cannot rotate relative to the housing 10.

As shown in fig. 4 and 5, the operation member 13 is provided with a slope portion 13a (1 st slope portion), the lock member 14 is provided with a corresponding slope portion 14a (2 nd slope portion), and the slope portion 13a and the slope portion 14a are in sliding contact with each other. When the operator presses the operating member 13 to move the operating member into the housing 10, the lock member 14 moves backward against the biasing force of the return spring 15 in conjunction with the operating member 13 by the engagement of the two inclined surface portions 13a and 14a as shown in fig. 7 (that is, the inclined surface portions 13a and 14a constitute a movement direction changing mechanism that changes the movement of the operating member 13 into the movement of the lock member 14 in the direction intersecting the movement direction of the operating member).

At this time, the protrusion 141 of the front portion of the lock member 14 is withdrawn from the groove 423 of the adjustment collar 42 (see fig. 8), the engagement of the lock member 14 with the adjustment collar 42 is released, and the adjustment collar 42 is switched to the freely rotatable unlocked state, so that the operator can freely rotate the adjustment collar 42 to rotate the shear head 40 to a rotational position different from the rotational position (1 st rotational position) of fig. 1. Thereafter, the operator releases the pressing of the operating element 13, and the locking element 14 is moved forward by the return spring 15, locking the adjusting collar 42 or the cutting head 40 again.

The shear 100 is shown in fig. 9 with the shear head 40 in the 2 nd rotational position. The state shown in fig. 10 and 11 is also the state in which the cutting head 40 is located at the 2 nd rotation position.

In the present embodiment, the operating member 13 pushed and moved by the operator is provided on the housing 10, and the lock member 14 moves between the lock position for locking the shear head 40 so as not to be rotatable with respect to the housing 10 and the unlock position for releasing the lock position in conjunction with the operation of the operating member 13, so that there is substantially no gap between the housing 10 and the operating member 13 when viewed from the outside as compared with an operating member configured as a slide type, for example, and therefore, it is possible to prevent the accumulation of chips and dust from affecting the normal operation of the operating member 13 at this point, and to improve the operability of the operating member 13. Further, since the operation member 13 is formed as a push button type, that is, the operator only has to push the operation member 13, operability is better than that of an operation member formed as a slide type.

In the present embodiment, the interlocking between the operation member 13 and the lock member 14 is achieved by the engagement of the two inclined surface portions 13a and 14a, and therefore the shear 100 can be manufactured with a simple structure and at a low cost.

In the present embodiment, a concave groove 423 that engages with the protrusion 141 of the lock member 14 is provided on the rear end surface of the adjustment collar 42 (collar member). That is, the adjustment collar 42 is engaged with the lock member 14 in an interior not exposed to the outside, and compared with a groove provided on the outer peripheral surface thereof to engage with the lock member 14, adverse effects on the engagement due to accumulation of chips and dust can be avoided.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

For example, in the above embodiment, the present invention has been described by taking the shearing machine 100 as an example, however, the present invention can be applied to other electric tools.

In the above embodiment, the cutting head 40 is rotatable with respect to the housing 10, and the operating member 13 is used when adjusting the rotational position of the cutting head 40, however, the present invention is not limited to this, and the present invention can be applied to other configurations in which the posture of the working head with respect to the housing can be adjusted, for example.

In the above embodiment, the lock member 14 and the operation member 13 are linked by two inclined surface portions, that is, the movement direction changing mechanism is constituted by two inclined surface portions that are slidably engaged, however, the present invention is not limited to this, and other configurations, for example, a rack and pinion mechanism may be used to change the movement of the operation member 13 into rotation, and another rack and pinion mechanism may be used to change the rotation into the forward and backward movement of the lock member 14.

Claims (8)

1. A power tool, comprising:

a housing;

a motor located within the housing;

the transmission mechanism is positioned in the shell and is connected with the motor;

a working head which is arranged on the shell and is connected with the transmission mechanism,

it is characterized in that the preparation method is characterized in that,

the shell is provided with:

an operation member exposed on a surface of the housing and moved by being pushed by an operator;

a lock member movable between a lock position for locking the working head so that the working head cannot move relative to the housing and an unlock position for releasing the lock;

and a movement direction changing mechanism that moves the lock member in a direction intersecting a movement direction of the operation member in conjunction with the operation member.

2. The power tool of claim 1,

the working head is rotatably mounted on the housing,

the locking member is linked to the operating member and moves between a locking position for locking the working head so that the working head cannot rotate relative to the housing and an unlocking position for unlocking the locking.

3. The power tool according to claim 1 or 2,

the movement direction changing mechanism includes: the locking member includes a 1 st ramp portion provided on the operating member and a 2 nd ramp portion provided on the locking member in sliding contact with the 1 st ramp portion.

4. The power tool of claim 2,

a collar component is arranged on the working head, a clamping groove is arranged on the end surface of one end part of the collar component in the axial direction,

a projection is provided on the locking member,

the working head is locked so as not to be rotatable relative to the housing by inserting the protruding portion into the engaging groove.

5. The electric power tool according to claim 4, wherein a slip prevention portion for allowing an operator's finger to easily catch is provided on an outer peripheral surface of the collar member.

6. The electric power tool according to claim 5, wherein the anti-slip portion is constituted by a plurality of concave portions and a plurality of convex portions which are circumferentially staggered.

7. The electric power tool according to claim 1 or 2, wherein an urging member that urges the lock member to the lock position is further provided on the housing.

8. The power tool of claim 1 or 2, wherein the working head is a shear head.

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