DE102009049808B4 - Ratchet wrench for a pulling direction - Google Patents

Abstract

Ratchet wrench for a pulling direction, a key body 10 having a first receiving space 11 having on the bottom an inner flange 111 and is connected on one side with a second receiving space 12, the bottom of which lies below the inner flange 111 having an annular groove 13, a ring gear 20 having on the inside a polygonal cavity 21 for a socket and on the outside a toothing 22 and is received in the first receiving space 11, a pawl 30 which is arcuate, on one side a toothed segment 31 which in the To engage toothing 22 of the ring gear, and at a suitable location has a groove 32 which is open to the bottom 300, is received in the second receiving space 12 of the key body 10 and marked with an icon for the size, a control 40, the the shape of the second receiving space 12 is adapted, with the inner flange 111 of the key body 10 aligned et and by punching a strip with a free end which is folded and thus includes a vertical portion 41 and a horizontal portion 411, wherein the horizontal portion 411 has a height corresponding to the groove 32 of the pawl 30, wherein the control 40 is located below the underside 300 of the pawl 30 in the second receiving space 12, wherein the front of the control element 40 is located between the teeth 22 of the ring gear 20 and the first receiving space 11, a spring element 50 having one end in the groove 32 of the pawl 30th protrudes and is placed with the other end to the horizontal portion 411 of the control element 40, whereby the spring element 50 is supported on the pawl 30 and the vertical portion 41 of the control element 40, and a cover ring 60 in the circumferential receiving recess 112 of the key body 10th is received, has an L-shaped cross-section and has an annular groove 61, and a Sperrrin g 70, which engages in the annular groove 13 of the key body 10 and the annular groove 61 of the cover ring 60 to secure the lid 60 to the key body 10.

Description

Technical area

The invention relates to a ratchet wrench having a control of a sheet metal.

State of the art

• 1. wie aus 2 ersichtlich ist, ist auf der Steuerplatte 21 eine L-förmige Stange 22 durch Schweißen befestigt, die durch Schweißen mit einer weiteren Stange 23 verbunden ist, wobei an der anderen Seite der Steuerplatte 21 ein Anschlag 24 angeschweißt ist, so dass die Bearbeitung der Steuerplatte 21 mehrere Schritte enthält;
• 2. wie aus 1 ersichtlich ist, steht die Vorderseite der Steuerplatte 21 mit der Verzahnung 31 des Zahnkranzes 30 in Kontakt, wodurch zwischen der Vorderseite der Steuerplatte 21 und der Verzahnung 31 des Zahnkranzes 30 eine Reibung erzeugt wird, wenn der Zahnkranz um 360° gedreht wird, so dass ein Verschleiß verursacht werden kann; wenn die Steuerplatte 21 im Aufnahmeraum 15 geklebt ist, um eine Reibung der Steuerplatte 21 und der Verzahnung 31 zu vermeiden, wird die Befestigung der Steuerplatte 21 erschwert;
• 3. wie aus 4 ersichtlich ist, weist die Sperrklinke 25 ein Loch 28 auf, in dem ein Federelement 29 aufgenommen ist, wobei die Sperrklinke 25 aus Pulver hergestellt ist und das Loch 29 nicht bilden kann, wodurch das Loch 29 gebohrt werden muß, so dass die Herstellungskosten erhöht werden.

Out US 7100477 B2 a ratchet wrench is known, which has the following disadvantages:

• 1. like out 2 it can be seen is on the control panel 21 an L-shaped rod 22 secured by welding, by welding with another rod 23 connected, being on the other side of the control plate 21 an attack 24 is welded, so that the machining of the control plate 21 contains several steps;
• 2. like out 1 it can be seen, is the front of the control panel 21 with the teeth 31 of the sprocket 30 in contact, eliminating between the front of the control plate 21 and the gearing 31 of the sprocket 30 a friction is generated when the ring gear is rotated 360 °, so that wear can be caused; if the control plate 21 in the recording room 15 is glued to a friction of the control plate 21 and the gearing 31 To avoid, the attachment of the control plate 21 difficult;
• 3. like out 4 can be seen, the pawl has 25 a hole 28 on, in which a spring element 29 is included, with the pawl 25 made of powder and the hole 29 can not form, causing the hole 29 must be drilled so that the manufacturing costs are increased.

• 1. wie aus 3 ersichtlich ist, ist das Positionierelement 30 an die Form des ersten Aufnahmeraums 21 und des zweiten Aufnahmeraums 22 angepaßt, so dass die Kosten des Positionierelements 30 höher sind;
• 2. wie aus 5 ersichtlich ist, ist das Federelement 34 im Positionierelement 30 angeordnet und an der Stirnseite 42 der Sperrklinke 4 abgestützt ist, so dass das Federelement 34 durch die Reibung mit der Sperrklinke 40 beschädigt werden kann;
• 3. das Positionierelement 50 ist zusammen mit dem Zahnkranz 50 im Schlüsselkörper 20 aufgenommen, wodurch der erste Aufnahmeraum 21 eine größere Höhe haben muß, so dass der Schlüsselkörper 20 eine größere Dicke hat.

Out US 6862955 B1 Another ratchet wrench is known which has the following disadvantages:

• 1. like out 3 it can be seen, is the positioning element 30 to the shape of the first recording room 21 and the second recording room 22 adapted so that the cost of the positioning element 30 are higher;
• 2. like out 5 it can be seen, is the spring element 34 in the positioning element 30 arranged and on the front side 42 the pawl 4 is supported, so that the spring element 34 by the friction with the pawl 40 can be damaged;
• 3. the positioning element 50 is together with the sprocket 50 in the key body 20 recorded, making the first recording room 21 must have a greater height, so that the key body 20 has a greater thickness.

Other ratchet wrench elements according to the prior art are known from the US 2003/0213342 A1 as well as the EP 1 413 399 A2 known and finally also from the EP 0 810 068 A1 the latter disclosing a ratchet-type ring spanner having a handle and a head portion which in turn includes a circular boundary wall defining therein a receiving space and including a land portion adjoining the handle, wherein in the land portion a cavity is defined by a ratchet wheel is received in the receiving space. In the cavity, an arcuate toothed element is inserted.

Brief description of the drawings

1 Three-dimensional exploded view;

2 Three-dimensional assembly drawing;

3 Three-dimensional assembly drawing;

4 shows a ratchet wrench of the side view;

5 shows an upper lifting view of the cutting perspective;

6 shows a plan view;

7 AA sectional view of the place of the 6 ;

8th B of the square magnified drawing sieve diagram;

9 shows a schematic drawing;

10 shows an exploded view;

11 shows an exploded view.

Ways to carry out the invention

How out 1 is apparent, the invention includes
a key body 10 who has a first recording room 11 has, on the bottom an inner flange 111 owns and on one side with a second recording room 12 is connected, the bottom of which under the inner flange 111 lies above the first and second recording room 11 . 12 a circumferential receiving recess 112 is provided, which has an annular groove 13 has,
a sprocket 20 which has a polygonal cavity on the inside 21 for a socket and on the outside a toothing 22 and in the first recording room 11 recorded,
a pawl 30 , which is arcuate, on one side of a toothed segment 31 that in the gearing 22 the ring gear can engage, and at a suitable location a groove 32 that points to the bottom 300 is open, in the second recording room 12 of the key body 10 is recorded and marked with an icon for the size,
a control 40 that conforms to the shape of the second recording room 12 adapted, with the inner flange 111 of the key body 10 Aligns and forms by punching a strip with a free end, which is folded and thus a vertical section 41 and a horizontal section 411 contains, with the horizontal section 411 has a height that of the groove 32 the pawl 30 corresponds, where the control 40 under the bottom 300 the pawl 30 in the second recording room 12 lies, with the front of the control 40 between the teeth 22 of the sprocket 20 and the first recording room 11 is,
a spring element 50 with one end in the groove 32 the pawl 30 protrudes and with the other end around the horizontal section 411 of the control 40 is placed, whereby the spring element 50 at the pawl 30 and the vertical section 41 of the control 40 is supported, and
a bezel 60 in the circumferential receiving recess 112 of the key body 10 is received, has an L-shaped cross-section and an annular groove 61 owns, and
a locking ring 70 in the ring groove 13 of the key body 10 and the ring groove 61 of the bezel 60 engages the lid 60 on the key body 10 to fix.

Like from the 2 and 3 is apparent, is the sprocket 20 in the first recording room 11 of the key body 10 taken while the pawl 30 and the control 40 in the second recording room 12 are included. The spring element 50 protrudes into the groove with one end 32 the pawl 30 and will be at the other end around the horizontal section 411 of the control 40 placed, causing the control 40 under the bottom 300 the pawl 30 lies. The toothed segment 31 the pawl 30 intervenes in the teeth 22 of the sprocket 20 one. The cover ring 60 is in the circumferential receiving recess 112 of the key body 10 recorded and locks the sprocket 20 and the pawl 30 in the key body 10 , The locking ring 70 reaches into the ring groove 13 of the key body 10 one.

Like from the 4 and 5 it can be seen when the key body is rotated clockwise, the spring element 60 in the groove 32 the pawl 30 pressed, causing the toothed segment 31 the pawl 30 and the gearing 22 of the sprocket 20 be kept in engagement so that the key body can be rotated in one direction.

Like from the 6 to 8th it can be seen, lies the bottom of the second receiving space 12 under the inner flange 111 of the key body 10 , If the control 40 in the second recording room 12 is absorbed, it is aligned with the inner flange 111 , The control 40 lies under the bottom 300 the pawl 30 , The front of the control 40 is under the gearing 22 of the sprocket 20 , creating a friction between the front of the control 40 and the gearing 22 of the sprocket 20 is avoided.

How out 9 it can be seen in the manufacture of the control 40 a tin 80 This is done by punching multiple controls 40 can form. The control 40 then forms by punching a strip with a free end, which is folded and thus a vertical section 41 and a horizontal section 411 contains. Therefore, the stamping of the control points 40 just two steps up, resulting in a sheet 80 several integrally formed controls 40 can be obtained.

How out 10 is apparent, is the second recording room 12 open to the inside. The cover ring 60 is in the circumferential receiving recess 112 of the key body 10 above the first recording room 11 added.

How out 11 can be seen, the sprocket 20 a square socket 21 have.

• 1. das Steuerelement ist einteilig ausgebildet und läßt sich sehr leicht herstellen;
• 2. aus einem Blech können mehrere Steuerelemente erhalten, so dass die Herstellungskosten reduziert werden;
• 3. die Sperrkline muß nicht an die Form des zweiten Aufnahmeraums angepaßt werden;
• 4. zwischen der Vorderseite des Steuerelements und der Verzahnung des Zahnkranzes wird eine Reibung vermieden;
• 5. das Federelement läßt sich nicht leicht verformen;
• 6. durch den Sperrring kann der Deckel leicht abgenommen werden, so dass der Austausch der inneren Bauteile erleichtert wird.

Therefore, the invention has the following advantages:

• 1. the control is integrally formed and can be very easily produced;
• 2. from a sheet can receive multiple controls, so that the manufacturing cost can be reduced;
• 3. the pawl does not have to be adapted to the shape of the second receiving space;
• 4. between the front of the control and the toothing of the ring gear friction is avoided;
• 5. the spring element can not be easily deformed;
• 6. by the locking ring, the lid can be easily removed, so that the replacement of the internal components is facilitated.

LIST OF REFERENCE NUMBERS

10

 key body

 11

 accommodation space

12

 accommodation space

112

 receiving recess

13

 ring groove

20

 sprocket

21

 cavity

22

 gearing

30

 pawl

31

 toothed segment

32

 groove

300

 bottom

40

 control

111

 inner flange

41

 section

411

 section

50

 spring element

60

 cover ring

61

 ring groove

70

 lock ring

80

 sheet

Claims (4)

Ratchet wrench for a pulling direction, a key body 10 who has a first recording room 11 has, on the bottom an inner flange 111 owns and on one side with a second recording room 12 is connected, the bottom of which under the inner flange 111 lies, which has an annular groove 13 owns a sprocket 20 which has a polygonal cavity on the inside 21 for a socket and on the outside a toothing 22 and in the first recording room 11 is included, a pawl 30 , which is arcuate, on one side of a toothed segment 31 that in the teeth 22 the ring gear can engage, and at a suitable location a groove 32 that points to the bottom 300 is open, in the second recording room 12 of the key body 10 is included and marked with an icon for the size, a control 40 that conforms to the shape of the second recording room 12 adapted, with the inner flange 111 of the key body 10 Aligns and forms by punching a strip with a free end, which is folded and thus a vertical section 41 and a horizontal section 411 contains, with the horizontal section 411 has a height that of the groove 32 the pawl 30 corresponds, where the control 40 under the bottom 300 the pawl 30 in the second recording room 12 lies, with the front of the control 40 between the teeth 22 of the sprocket 20 and the first recording room 11 located, a spring element 50 with one end in the groove 32 the pawl 30 protrudes and with the other end around the horizontal section 411 of the control 40 is placed, whereby the spring element 50 at the pawl 30 and the vertical section 41 of the control 40 is supported, and a bezel 60 in the circumferential receiving recess 112 of the key body 10 is received, has an L-shaped cross-section and an annular groove 61 owns, and a locking ring 70 in the ring groove 13 of the key body 10 and the ring groove 61 of the bezel 60 engages the lid 60 on the key body 10 to fix. A ratchet wrench for a pulling direction according to claim 1, wherein over the first and second receiving space 11 . 12 a circumferential receiving recess 112 is provided. A ratchet wrench for a pulling direction according to claim 1, is the second receiving space 12 open to the inside. The cover ring 60 is in the circumferential receiving recess 112 of the key body 10 above the first recording room 11 added. Ratchet wrench for a pulling direction according to claim 1, the sprocket 20 a square socket 21 have.

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