DE202011051856U1 - Ratchet of a ratchet wrench - Google Patents

Abstract

A ratchet wrench ratchet comprising a body (10) having a plurality of ratchet teeth (12) disposed on an outer annular periphery (11), the periphery of the body (10) comprising a coating layer (20), and the application layer (20 ) has a window (21), so that the ratchet teeth (12) through the window (21) are visible.

Description

Technical area

The present invention relates to a ratchet of a ratchet wrench, in particular a ratchet, wherein the peripheral surface is coated with a coating layer, and the original torsional force is maintained, and their aesthetic effect, their quality impression, their identification and so on are improved.

State of the art

Out US6082227 and US7028588 are the conventional hand tools (for example, wrench, sleeve and so on) known, the surface of the hand tools is coated in the production with a coating layer. The method for producing the coating layer on the hand tools refers to blackening, nickel plating, chrome plating, tinning, titanium coating, electroplating, painting or painting, and so on, so that a coating layer is formed on the entire visible surface of such hand tools.

• a) wie in 12 bis 14 dargestellt, ist, wenn eine Auftragsschicht 60 auf der ganzen Oberfläche des Selbstkörpers 50 der Ratsche gebildet ist, die Oberfläche 52 der Ratschenzähne 51 mit der Auftragsschicht 60 voll gefüllt oder die Höhe der Ratschenzähne 51 hat zugenommen und da die Oberfläche 61 der Auftragsschicht 60 sehr schwach ist, und der ursprüngliche Wirkabstand H2 der Ratschenzähne 51 zusätzlich reduziert ist, führt dies zum Verlust der Antriebstorsionskraft; und
• b) da die Tiefe der Ratschenzähne 51 auf H1 reduziert ist, ist es unmöglich, eine sichere Verzahnung der Ratschenzähne 51 mit der Klinke zu erreichen, so dass es zum Verlust der Antriebstorsionskraft führt. Wenn die Tiefe der Ratschenzähne 51 der Ratsche sehr klein (0,28 mm bis 0,58 mm) ist, ist keine Zahnform sichtbar, nachdem die Ratschenzähne 51 mit der Auftragsschicht 60 mit einer Dicke von 0,5 mm überzogen worden sind und es ist unmöglich, die Ratschenzähne 51 sicher mit der Klinke zu verzahnen, so dass es zu großem Verlust der Torsionskraft und zum Überspringen von Zähnen führt. Daher ist bis jetzt noch keine Ratsche mit einer Auftragsschicht nach dem Stand der Technik projektiert, so dass die Ratsche nur eine originale Farbe hat, und es unmöglich ist, ihre ästhetische Wirkung, ihren Qualitätseindruck und ihre Identifizierung zu verbessern.

The size of such hand tools is already determined at the design stage, but the thickness of the application layer (at least about 0.5 mm) with respect to the additional machining is not considered. Although the increased thickness of 0.5 mm does not cause any problems in operation of the wrench or the sleeve, the increased thickness of 0.5 mm due to the coating layer causes the following disadvantages:

• a) as in 12 to 14 is shown when a job layer 60 on the whole surface of the auto body 50 the ratchet is formed, the surface 52 the ratchet teeth 51 with the order layer 60 fully filled or the height of the ratchet teeth 51 has increased and there the surface 61 the order layer 60 is very weak, and the original effective distance H2 of the ratchet teeth 51 is additionally reduced, this leads to the loss of the drive torsional force; and
• b) because the depth of the ratchet teeth 51 is reduced to H1, it is impossible to secure gearing of the ratchet teeth 51 reach with the pawl, so that it leads to the loss of drive torsional force. If the depth of the ratchet teeth 51 The ratchet is very small (0.28 mm to 0.58 mm), no tooth shape is visible after the ratchet teeth 51 with the order layer 60 with a thickness of 0.5 mm and it is impossible to ratchet teeth 51 securely interlock with the pawl so that it results in great loss of torsional force and skipping of teeth. Therefore, a ratchet with a prior art coating layer has not yet been designed so that the ratchet has an original color and it is impossible to improve its aesthetic appeal, quality impression and identification.

Content of the invention

The present invention has for its object to provide a ratchet, wherein the surface of the ratchet is coated with a coating layer to improve their aesthetic effect, their quality impression and their identification, and the original torsional force of the ratchet is maintained, and the skipping of teeth is avoided.

The object is achieved according to the present invention by a ratchet of a ratchet wrench, wherein the peripheral surface of the body of the ratchet is coated with a coating layer and the application layer of ratchet teeth, which are arranged on the outer annular periphery of the ratchet, removed by means of laser technology, so that a corresponding window is formed on the coating layer, and the ratchet teeth of the ratchet are thereby visible.

Brief description of the drawings

1 Ratchet according to the present invention shown in perspective view;

2 Ratchet according to the present invention shown in perspective view, wherein the ratchet is completely coated with a coating layer;

3 Ratchet according to the present invention shown in front view, wherein the ratchet is completely coated with a coating layer;

4 Ratchet after 3 shown in section along AA;

5 Part B off 4 shown on an enlarged scale;

6 Ratchet according to the present invention shown schematically, wherein the ratchet is arranged on a rotary lever;

7 Ratchet according to the present utility model shown schematically, the application layer is partially removed;

8th Removal of the outer annular periphery arranged coating layer according to the present invention shown schematically, with only those on the two end surfaces and on the inner annular periphery arranged application layer remains;

9 Part B off 8th shown on an enlarged scale;

10 Removal of the coating layer disposed in the central portion of the outer annular periphery according to the present invention shown schematically, wherein the application layer, which is arranged in both end portions, on both end surfaces and on the inner annular periphery remains;

11 Part B off 10 shown on an enlarged scale;

12 a conventional ratchet according to the prior art shown in side view;

13 Ratchet after 12 shown in section along EE, and

14 Part F off 13 shown on an enlarged scale.

embodiment

As in 8th and 9 As shown, the ratchet of a ratchet wrench according to the present invention comprises a body 1 , A plurality of ratchet teeth 12 is at the outer annular periphery 11 of the body 10 the ratchet arranged the body 10 is disposed inside the ratchet wrench ratchet to generate the drive for rotation in a single direction. The essential features of the present invention are: the circumference of the body 10 includes a job layer 20 , the order layer 20 has a window 21 up, the window 21 is designed such that a plurality of ratchet teeth 12 is visible. In the embodiment shown in the drawings, the body 10 the ratchet is annular and includes an outer annular periphery 11 and an inner annular periphery 18 , The inner annular circumference 18 is with the order layer 20 overdrawn. In addition, a plurality of clamping parts 19 on the inner annular periphery 18 of the body 10 the ratchet arranged. The inner annular circumference 18 is attachable to a workpiece (for example, screw nut or screw head), the workpiece is on the clamping parts 19 clamped. In an in 1 illustrated embodiment is a plurality of concave grooves 190 on the inner annular periphery 18 by the distance between each two of the clamping parts 19 educated. In the embodiment shown in the drawing, the individual concave grooves 190 V-shaped, and twelve concave grooves 190 are provided, and the concave grooves 190 are connected to each other continuously. The inner annular circumference 18 of the body 10 the ratchet is attachable to the workpiece and drives the workpiece for rotation. The inner ingate circumference 18 is in the range specified in the DIN specification and has a tolerance of at least 1 mm. Even if the inner annular circumference 18 with a coating layer 20 coated with a thickness of 0.5 mm, it is still possible the body 10 attach the ratchet to the workpiece. Therefore, it is not necessary that on the inner annular periphery 18 arranged application layer 20 to remove.

In 10 and 11 another embodiment is shown, wherein the outer annular periphery 11 of the body 10 the ratchet has a middle section 13 and two end sections 14 . 15 includes, and the middle section 13 and the two end sections 14 . 15 in the axial direction of the body 10 are arranged. The middle section 13 lies between the two end sections 14 . 15 , The ratchet teeth 12 are in the middle section 13 arranged on the circumference. The two end sections 14 . 15 and the two end faces 16 . 17 are still with the order layer 20 overdrawn.

As in 1 represented, the body becomes 10 the ratchet first made. As in 2 Then, a process step of blackening, nickel plating, chrome plating, tinning, titanium coating, electroplating, painting or painting, and so on, is performed so that the whole peripheral surface of the body 10 the ratchet with the coating layer 20 is coated after the body 10 has been finished, or if the body 10 in carrying out the manufacturing process. As in 2 to 5 represented, is the body 10 ring-shaped and the outer annular circumference 11 , the two end surfaces 16 . 17 and the inner annular periphery 18 are with a commissioned layer 20 overdrawn. The inner annular circumference 12 of the body 10 acts with the shape of the peripheral surface of a rotary lever 30 together, a number of bodies 10 is on a rotary lever 30 attached, and a nut 33 is at one end 32 of the rotary lever 30 screwed.

The body 10 is from the nut 33 locked and is before falling off the rotary lever 30 protected. Around a window 21 on the order layer 20 To form a laser device according to the present invention is used for generating laser beams, as in 7 to 11 shown. The body 10 The ratchet is from the rotary lever 30 rotated, and the laser device 40 is moved in the axial direction. The at the outer annular periphery 11 of the body 10 the ratchet arranged application layer 20 will gradually away from the laser beam, leaving the window 21 is formed and the ratchet teeth 12 through the window 21 are visible. The speed of the rotary lever acts 30 with the moving speed of the laser device 40 together, so that originally on the circumference of the ratchet teeth 12 arranged application layer 20 partially removed, and the corresponding window 21 is formed and the ratchet teeth 12 through the window 21 are visible. The one from the laser device 40 generated laser beam is in a certain temperature range, and a certain distance between the laser device 40 and the body 10 the ratchet is guaranteed to ratchet teeth 12 to protect against damage.

As in 6 shown, the body rejects 10 the ratchet of the present invention many sizes (5 mm to 32 mm) on. The rotary lever 30 also has corresponding sections 31 in many different sizes, being one body 10 the ratchet at a corresponding section section 31 is pluggable.

• 1. Der Umfang des Körpers 10 der Ratsche ist mit einer Auftragsschicht 20 überzogen, so dass ihre ästhetische Wirkung, ihr Qualitätseindruck und ihre Identifizierung verbessert sind.
• 2. Ein Fenster 21 ist auf der Auftragsschicht 20 des Selbstkörpers 10 der Ratsche angeordnet, so dass die Ratschenzähne 12 dadurch sichtbar sind, und wirkungsvoll mit der Klinke verzahnt sind, sowie die ursprüngliche Antriebstorsionskraft aufrechterhalten ist.
• 3. Wenn der Körper 10 der Ratsche ringförmig ausgeführt ist, ist die an dem inneren ringförmigen Umfang angeordnete Auftragsschicht 20 sichtbar, so dass die gebührende Funktion der Auftragsschicht 20 wirkungsvoll entfaltet ist.

The ratchet according to the present invention has the following advantages:

• 1. The circumference of the body 10 the ratchet is with a coating layer 20 coated, so that their aesthetic effect, their quality impression and their identification are improved.
• 2. A window 21 is on the order layer 20 of the auto body 10 the ratchet arranged so that the ratchet teeth 12 thereby are visible, and are effectively meshed with the pawl, as well as the original drive torsional force is maintained.
• 3. When the body 10 the ratchet is annular, is the coating layer disposed on the inner annular periphery 20 visible, so that the due function of the application layer 20 is effectively developed.

The present invention relates to a ratchet of a ratchet wrench comprising a body 10 in which a plurality of ratchet teeth 12 on an outer annular periphery 11 of the body 10 is arranged, wherein the peripheral surface of the body 10 with a coating layer 20 is coated and the order layer 20 a window 21 so that the ratchet teeth 12 through the window 21 are visible. In the present invention, the original torsional force is maintained and the aesthetic effect, the quality impression and the identification are improved.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 6082227 [0002]
• US 7028588 [0002]

Claims (8)

Ratchet of a ratchet wrench comprising a body ( 10 ), in which a plurality of ratchet teeth ( 12 ) on an outer annular periphery ( 11 ), the circumference of the body ( 10 ) a job layer ( 20 ) and the order layer ( 20 ) a window ( 21 ), so that the ratchet teeth ( 12 ) through the window ( 21 ) are visible. A ratchet wrench ratchet according to claim 1, wherein said outer annular periphery (Fig. 11 ) of the body ( 10 ) a middle section ( 13 ) and two end sections ( 14 . 15 ), the middle section ( 13 ) and the two end sections ( 14 . 15 ) in the axial direction of the body ( 10 ), the middle section ( 13 ) between the two end sections ( 14 . 15 ), the ratchet teeth ( 12 ) in the middle section ( 13 ), and the two end sections ( 14 . 15 ) with the order layer ( 20 ) are coated. A ratchet wrench ratchet according to claim 1, wherein the two end surfaces ( 16 . 17 ) of the body ( 10 ) with the order layer ( 20 ) are coated. A ratchet wrench ratchet according to claim 1, wherein the body ( 10 ) is annular and the outer circumference ( 11 ) and an inner annular periphery ( 18 ), and the inner annular periphery ( 18 ) with the order layer ( 20 ) is coated. Ratchet of a ratchet wrench according to claim 4, wherein a plurality of clamping parts ( 19 ) on the inner annular periphery ( 18 ) of the body ( 10 ), the inner annular periphery ( 18 ) is attachable to a workpiece and the workpiece on the clamping parts ( 19 ) is clamped. A ratchet wrench ratchet according to claim 5, wherein a plurality of concave grooves ( 190 ) on the inner annular periphery ( 18 ) by the distance between each two of the clamping parts ( 19 ) is formed. A ratchet wrench ratchet according to claim 6, wherein the individual concave grooves ( 190 ) Are V-shaped and connected to each other in an uninterrupted sequence. A ratchet wrench ratchet according to claim 4, wherein the outer annular periphery ( 11 ) of the self body ( 10 ) a middle section ( 13 ) and two end sections ( 14 . 15 ), the middle section ( 13 ) and the two end sections ( 14 . 15 ) in the axial direction of the body ( 10 ), the middle section ( 13 ) between the two end sections ( 14 . 15 ) and the two end sections ( 14 . 15 ) with the order layer ( 20 ) are coated.

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