DE102011057067B4 - wrench - Google Patents

Abstract

A wrench, comprising: a wrench structure (1) in which a receiving opening (10) is formed on the inside and a switching opening (11) is formed below this receiving opening (10), which is connected to the receiving opening (10), and wherein the switching opening (11 ) forms an opening in the front of the wrench assembly (1); a ratchet wheel (2) which is received in the receiving opening (10), part of this ratchet wheel (2) being exposed in the switching opening (11); and an actuating structure (3) which is installed in the switching opening (11) and is further constructed from a first spring (31), two drive elements (30), an actuator (32) and a switching element (33); wherein the two drive elements (30) are elastically connected to one another with the first spring (31); the two drive elements (30) optionally engaging or disengaging from the ratchet wheel (2); so that when the switching element (33) is moved in one direction, one of the drive elements (30) is engaged in the ratchet wheel (2) in one direction and the other drive element (30) is disengaged from the ratchet wheel (2) so that the The ratchet wheel (2) is only rotated in one direction and the ratchet wheel (2) is supported with a drive element (30) to rotate in one direction; when the ratchet wheel (2) is forcibly turned in the other direction, the first spring (31) is compressed and both drive elements (30) are disengaged from the ratchet wheel (2), after which the ratchet wheel (2) can be rotated freely and does not perform any function, characterized in that the actuator (32) is formed as a Y-shaped plate element; the upper part of the Y-shaped actuator (32) is formed from two runner ribs (320), both drive elements (30) being internally formed with a composite gap (302) to accommodate one of the runner ribs (320) and the lower part this Y-shaped actuator (32) is received in the switching element (33).

Description

Technical area

The present invention relates to wrenches, in particular wrenches with a ratchet wheel for a clockwise or counterclockwise rotation, wherein the cost of producing a wrench according to the invention is significantly lower than that for the production of a known ratchet. A wrench according to the preamble of claim 1 is of font DE 10 2009 006 820 A1 known.

State of the art

One known prior art wrench is for tightening or loosening screws and nuts on particular machines and mechanisms. This prior art wrench is constructed to conform to the respective size of the screw and nut of an adjustable jaw to tighten or loosen the screw and nut therewith. In the conventional use of the prior art wrench for tightening or loosening the bolt and the nut, the wrench must be removed from the bolt and nut after each rotational movement for tightening and then retightened to the bolt for further tightening and nut are properly positioned for fastening. This is impractical for the user.

To circumvent this disadvantage mentioned above, some manufacturers have combined a ratchet with a wrench. This improved embodiment of the wrench with a ratchet wheel is constructed of a wrench assembly, a ratchet wheel, a shift knob, and a mechanism for adjusting the direction of actuation. The wrench assembly is formed in its head part with a receiving opening. Close to this receiving opening a switching opening is formed. A parking opening is connected to the switching opening. The ratchet wheel is received in the receiving opening. The switch knob is located in the switch opening. The switch knob is engaged in the ratchet wheel. The mechanism for adjusting the operating direction is received in the adjusting hole. The switch button has a hole on its underside and a slot on the side, which is formed close to this hole on the bottom. The mechanism for adjusting the actuating direction consists of a block element, an elastic element attached to this block element and a setting plate. One end of the elastic member is received in the hole of the shift knob to push the shift knob to engage in the ratchet wheel. One end of the set plate is received in the slot of the switch knob to prevent falling of the elastic member.

Unfortunately, however, this improved embodiment of the wrench with the ratchet wheel has a precise structure, which significantly increases the cost of manufacturing. For example, if the teeth of the teeth of the ratchet wheel are too sharp, the switch knob is easily engaged in the ratchet, but can be difficult to disengage from this again. In addition, the space of the switching opening with the switch knob must match, otherwise the gap between the switch knob and the ratchet wheel can cause the wrench with the ratchet wheel can not work. Producing a pair of useful shift knobs and a good ratchet therefore requires a great deal of time and expense. The method for repairing this construction of the shift knob and the ratchet wheel have therefore moved into the center of this area.

US 7,121,171 B2 discloses a ratchet with a 2-direction ratchet and a switching unit. When adjusting the switching unit is a cuboid positioning rod and thus a single brake pad - true blocking block - moves so as to select the direction of rotation of the wrench. In the center of the pad is a groove to receive therein one end of the positioning rod.

US 2006/0185479 A1 discloses a very similar wrench. However, the cuboid positioning rod is replaced by a T-shaped control rod, which connects the switch with a brake pad. The brake pad has a groove which is slightly wider than the width of the control rod to receive the control rod in the groove and thus in the brake pad.

DE 10 2009 006 820 A1 discloses a ratchet wrench with a slide switch that is part of a control. This control further includes an actuator having a T-shaped longitudinal section. The inside of the cross bar, which forms the web of the T-shaped actuator, has two contact portions, each having a guide portions at their free ends. One of the contact portions of a guide portion is engaged with a coupling portion in a pawl when the coupling portion is displaced under the force of a spring along the inclined guide portion.

US 2011/0132149 A1 teaches a wrench with a ratchet, two brake shoes, two slides and two elastic elements. Will a movement bar to the right or left pressed, a position part also moves to the right or left. As a result, a concave notch of the positioning member engages a ball, so that a moving rod is tilted upward, whereby a slider, an elastic member and a brake shoe are further pressed. As a result, teeth of the brake shoe engage in teeth of the ratchet wheel.

It is an object of the invention to provide a wrench that can be produced materially and easily.

This object is solved by the teaching of the independent claim.

Preferred embodiments of the invention are subject of the dependent claims.

To achieve the above object, a wrench with a ratchet wheel of a wrench assembly is constructed, which has a receiving opening and a switching opening under this receiving opening. Under the receiving opening, a switching opening is formed, which is connected to the receiving opening. The switch opening forms an opening on the front of the wrench assembly. A ratchet wheel is received in the receiving opening, wherein a portion of this ratchet wheel is exposed in the switching opening. An actuating structure is incorporated in the switching opening and further consists of a first spring, two drive elements, an actuator and a switching element. The two drive elements are elastically connected to each other with the first spring. The actuator is formed as a Y-shaped plate member. The upper part of this Y-shaped actuator is fastened with one of the two drive elements, while the lower part of the Y-shaped actuator is received in the switching member. Both drive elements are engaged or disengaged in the ratchet wheel. When moving the switching member in one direction, a drive element of the one direction is correspondingly engaged in the ratchet wheel, while the other drive element is disengaged from the ratchet wheel, so that the ratchet wheel is rotated in one direction only, wherein the ratchet wheel for rotating in the direction with a drive element is supported. However, when the ratchet wheel is forcibly rotated in the other direction, the first spring is compressed, whereby the two driving elements are disengaged from the ratchet wheel and the ratchet wheel can be moved freely and performs no function.

On the underside of the switching opening a groove are formed on the left and right sides, a second hole is formed on the underside of the switching member, while a second spring between the second hole and the groove is mounted. The second spring is constructed with a bead and a spring element, wherein one end of this spring element is received in the second hole and the other end of the spring element is attached to the bead. The bead is between the second hole and one of the grooves.

The upper part of the Y-shaped actuator is formed in the form of two ridge ribs, wherein the drive elements each have a composite gap inside, in each of which one of the ridge ribs are engaged.

The drive elements are each provided with a first hole, these two first holes are formed opposite to each other and the first spring are pressed against these two first holes of the two drive elements.

On the upper side of the switching member, a positioning slot is formed to receive in this the lower part of the actuator.

On the front of the switching element, a projection is formed. This projection facilitates the user to move the switching element in the switching opening to the left and right, wherein one of the drive elements is selectively engaged in the ratchet wheel.

The drawings show:

1 shows an exploded view of a wrench according to the invention with the ratchet wheel;

2 shows a view of the structure of the wrench according to the invention with the ratchet wheel;

three shows a cross-sectional view of the in the 2 shown wrench with the ratchet along the section AA along;

4 shows a side view from the front showing the wrench with the ratchet wheel for the operation in the clockwise direction; and

5 shows a side view from the front showing the wrench with the ratchet wheel for the operation in the counterclockwise direction.

With reference to the 1 - three is a wrench with a ratchet wheel from a wrench assembly 1 a ratchet wheel 2 and from an operating structure three composed.

In the wrench construction 1 is inside a receiving opening 10 educated. Under this receiving opening 10 has the Wrench assembly 1 a switching opening 11 on that with the receiving opening 10 connected is. The switching opening 11 is on the front of the wrench assembly 1 provided with an opening. Down in this switching opening 11 are each on the left and right side a groove 110 educated.

The ratchet wheel 2 is in the receiving opening 10 taken, being a part of this ratchet wheel 2 in the switching opening 11 is exposed.

The operating structure three is in the switch opening 11 assembled. Next, there is the operation structure three from two drive elements 30 , a first spring 31 , an actuator 32 and a switching element 33 , Both drive elements 30 ever enter the ratchet wheel and each have a first hole 301 on. These first two holes 301 are shaped opposite each other. A first spring 31 presses against the first two holes 30 the two drive elements 30 on, so that the two drive elements 30 with the first spring 31 be elastically connected to each other. The actuator 32 is formed as a Y-shaped plate member. The upper part of this Y-shaped plate element consists of two foothill ribs 320 , Both drive elements 30 each have a composite gap 302 formed therein to have the foothill ribs therein 320 to be indented. The lower part of the Y-shaped actuator 32 is in the switching element 33 added. The upper surface of the switching element 33 is with a positioning slot 330 provided therein to the lower part of the actuator 32 take. The switching element 33 is in accordance with the switching opening 11 shaped as an ellipse. The switching element 33 can in this switching opening 11 be moved from left to right. On the bottom, the switching element 33 a second hole 331 on. Between the second hole 331 and the groove 110 is a second spring 332 assembled. The second spring 332 is with a bead 3320 and a spring element 3321 provided with one end of this spring element 3321 in the second hole 331 is received and another end of the spring element 3321 to the bead 3320 abuts. The bead 3320 may be the surface of the switching opening 11 to be moved along. When impressing the bead 3320 in the second hole 331 and moving back to the groove 110 becomes the globule 3320 in the groove 110 held to the switching element 33 to position. The front of the switching element 33 is with a lead 333 formed so that the user the switching element 33 in the switching opening 11 with the help of this projection 333 easier to move left and right to one of the drive elements 30 optionally in the ratchet wheel 2 engage.

When the switching element 33 in this arrangement, to the left (right) is pushed, the left (right) drive element 30 in the ratchet wheel 2 engaged while the left (right) drive element 30 from the ratchet wheel 2 is disengaged and thus the latter can be rotated only gradually to the left (right). In this case, the ratchet wheel 2 with the left (right) drive element 30 be supported to this ratchet wheel 2 to turn left (right). When rotating the ratchet wheel 2 in the other direction becomes the first spring 31 compressed, with both drive elements 30 from the ratchet wheel 2 be disengaged. The ratchet wheel 2 can then be rotated freely.

Like in the 4 shown, the switching element 33 moved to the left to the second spring 332 in the left groove 110 the switching opening 11 hold. Furthermore, the actuator 32 shifted to the left while the left drive element 30 with the left 320 of the actuator 32 is pushed to the left drive element 30 in the ratchet wheel 2 engage. In this case, the right drive element 30 simultaneously from the ratchet wheel 2 disengaged. When forcibly turning the ratchet wheel 2 counterclockwise becomes the first spring 31 compressed while the drive elements 30 from the ratchet wheel 2 be disengaged. In this way, the ratchet wheel 2 only turned clockwise.

Like in the 5 shown, the switching element 33 moved to the right to the second spring 332 in the right-hand groove 110 the switching opening 11 hold. Furthermore, the actuator 32 moved to the right, with the right drive element 30 with the right ridge 320 of the actuator 32 is pushed to the right drive element 30 in the ratchet wheel 2 engage. In this case, the left drive element 30 simultaneously from the ratchet wheel 2 disengaged. When forcibly turning the ratchet wheel 2 clockwise becomes the first spring 31 compressed while the drive elements 30 from the ratchet wheel 2 be disengaged. In this way, the ratchet wheel 2 turned counterclockwise.

LIST OF REFERENCE NUMBERS

1

Wrench assembly

10

receiving opening

11

switching port

110

groove

2

ratchet wheel

3

actuating assembly

30

driving element

301

First hole

302

composite gap

31

First spring

32

actuator

320

foothills rib

33

switching element

330

locating slot

331

Second hole

332

Second spring

3320

globule

3321

spring element

333

head Start

Claims (5)

A wrench comprising: a wrench assembly ( 1 ), in which a receiving opening ( 10 ) and under this receiving opening ( 10 ) a switching opening ( 11 ) formed with the receiving opening ( 10 ), and wherein the switching opening ( 11 ) in the front of the wrench assembly ( 1 ) forms an opening; a ratchet wheel ( 2 ) located in the receiving opening ( 10 ), wherein a part of this ratchet wheel ( 2 ) in the switching opening ( 11 ) is exposed; and an actuating structure ( three ) located in the switching opening ( 11 ) and further from a first spring ( 31 ), two drive elements ( 30 ), an actuator ( 32 ) and a switching element ( 33 ) is constructed; wherein the two drive elements ( 30 ) with the first spring ( 31 ) are elastically connected to each other; wherein the two drive elements ( 30 ) optionally in the ratchet wheel ( 2 ) or move out of it; so that when the switching element ( 33 ) is moved in one direction, one of the drive elements ( 30 ) corresponding to the one direction in the ratchet wheel ( 2 ) and the other drive element ( 30 ) from the ratchet wheel ( 2 ) is disengaged, so that the ratchet wheel ( 2 ) turned in one direction only and the ratchet wheel ( 2 ) with a drive element ( 30 ) is supported to turn in one direction; when forcibly turning the ratchet wheel ( 2 ) in the other direction the first spring ( 31 ) is compressed and both drive elements ( 30 ) from the ratchet wheel ( 2 ), after which the ratchet wheel ( 2 ) can be rotated freely and performs no function, characterized in that the actuator ( 32 ) is formed as a Y-shaped plate member; the upper part of the Y-shaped actuator ( 32 ) of two foothills ribs ( 320 ) is formed, wherein both drive elements ( 30 ) internally with a composite gap ( 302 ) is formed in order to each one of the foothills ribs ( 320 ) and the lower part of this Y-shaped actuator ( 32 ) in the switching element ( 33 ) is recorded. The wrench according to claim 1, characterized in that on the underside of the switching opening ( 11 ) on the left and on the right side each a groove ( 110 ) is formed; at the bottom of the switching element ( 33 ) a second hole ( 331 ) is shaped; a second spring ( 332 ) between the second hole ( 331 ) and the groove ( 110 ), this second spring ( 332 ) from a bead ( 3320 ) and a spring element ( 3321 ) and one end of this spring element ( 3321 ) in a second hole ( 331 ) and the other end of the spring element ( 3321 ) on the bead ( 3320 ) is attached; the globule ( 3320 ) between the second hole ( 331 ) and a groove ( 110 ) is located. The wrench according to claim 1 or 2, characterized in that both drive elements ( 30 ) each with a first hole ( 301 ), which are formed opposite each other, while the first spring ( 31 ) against these two first holes ( 301 ) of the two drive elements ( 30 ) is pressed. The wrench according to one of claims 1 to 3, characterized in that the switching element ( 33 ) on its upper side a positioning slot ( 330 ) in order in this the lower end of the actuator ( 32 ). The wrench according to one of claims 1 to 4, characterized in that on the front side of the switching element ( 33 ) a lead ( 333 ), which makes it easier for the user, the switching element ( 33 ) in the switching opening ( 11 ) to move left and right, whereby one of the drive elements ( 30 ) optionally in the ratchet wheel ( 2 ) is indented.

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