WO2020001669A1 - Ratschenschlüssel - Google Patents
Ratschenschlüssel Download PDFInfo
- Publication number
- WO2020001669A1 WO2020001669A1 PCT/DE2018/000196 DE2018000196W WO2020001669A1 WO 2020001669 A1 WO2020001669 A1 WO 2020001669A1 DE 2018000196 W DE2018000196 W DE 2018000196W WO 2020001669 A1 WO2020001669 A1 WO 2020001669A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ratchet wrench
- inner ring
- individual segments
- outer ring
- wrench according
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
- B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
Definitions
- the invention relates to a ratchet wrench for mechanically releasing and tensioning elements of a releasable connection, in particular connections with screws and / or nuts.
- a ratchet wrench for mechanically releasing and tensioning elements of a releasable connection, in particular connections with screws and / or nuts.
- an open ratchet wrench is known from the prior art, which has curved, fixed and pivotable jaw segments.
- the jaw segments of the ratchet wrench hold round wrench inserts that have a different design.
- Typical key inserts used here are box, socket wrench and open-end inserts.
- the ratchet function is set to clockwise and anti-clockwise rotation by turning a handle.
- the different inserts are removed and inserted using a slide which, in cooperation with the handle, swivels the swiveling jaw segment.
- the invention relates to a ratchet wrench with an open end, which is characterized by a handle carried by the fixed jaw segment and its pivotable jaw segment by a carriage carried by the handle.
- a pair of pawls is pivoted in the segment of the fixed jaws in connection with the teeth on the circumference of each of the inserts.
- the pawls are operated by turning the handle to the right and left to set a pair of pawl contacts in alternative positions on the pawls.
- a disadvantage of this ratchet wrench are the different key inserts required for the function in order to release and tighten different forms of the releasable connecting elements.
- Another disadvantage is the required position of the ratchet wrench for receiving the connecting elements, which proves to be a hindrance in poorly accessible mounting positions.
- a ratchet wrench for turning polygonal screws and nuts is also known from DE 3904956 A1.
- the engagement of the pawls in the locking teeth of the ratchet is no longer achieved by springs but by magnetic force.
- small and easily insertable magnets are preferably introduced in the form of magnetic plates.
- the ratchet wrench made known according to US Pat. No. 8,100,036 B2 consists, similar to the previous embodiments, of a handle and a movable jaw.
- the handle has a pivoting part which is arranged at one working end of the handle.
- the ratchet wrench has a fixed jaw, which is designed as an integral extension of the handle.
- the movable jaw is pivotally coupled to the swivel part.
- the ratchet is located between the two jaws.
- the movable jaw also has a clamp that has a plurality of continuously arranged teeth. With this design of the ratchet wrench, the outer and the inner ring are divided.
- a ratchet is installed between a movable and a fixed jaw, the movable jaw having a clamp for engaging the teeth of the ratchet.
- An elastic member is also provided to support and support the movable jaw so that the ratchet can be rotated in one direction with respect to the handle and the key can achieve the effects of idle rotation and mutual actuation.
- the radius of curvature of the outer periphery of the ratchet is made smaller than the radius of curvature of the clamp of the movable jaw in order to engage the teeth of the ratchet with the teeth of the movable jaw.
- the tooth pitch of the ratchet is chosen to be smaller than the tooth pitch of the movable jaw in order to increase the strength of the teeth of the movable jaw.
- an elastic element is provided to press the teeth of the movable part against the teeth of the ratchet so that the ratchet can be rotated in one direction with respect to the handle and the two jaws.
- ratchet spanner that can be cleaned with water.
- the ratchet spanner prevents the accumulation of dust and dirt.
- the ratchet spanner is essentially of a whole body.
- This key also requires the use of different inner rings, which have an opening for receiving the screws or nuts.
- the object of the invention is therefore to provide a ratchet wrench with which the different shapes of the connecting elements can be loosened or fastened during the entire loosening or fastening process without changing the inserts and without the need for stopping.
- the task is to design the ratchet wrench for use at inaccessible assembly points.
- the inner ring preferably consists of individual segments which are arranged on the inner surface of the inner ring. Different inserts for the different forms of detachable connections such. B. box, socket or open-end inserts are no longer required by the solution according to the invention. Due to the compression of the individual segments to the outer shape of the connecting elements to be released, an adaptation to their outer shapes takes place.
- a preferably symmetrical arrangement of the individual segments over the circumference of the circular inner surface of the inner ring efficiently exerts a circumferentially equally distributed clamping force on the connecting elements.
- the interconnected individual segments of the inner ring are effectively connected to the outer ring by a magnetic field.
- the circumferentially closed outer ring consists of two halves, which are connected with mechanical actuation means, which open the outer ring to receive the connecting means and close again after being received. Thereafter, the position fixing of the rotary bearing serving for the movable connection between the lower head part and the grip element is advantageously produced by means of a sliding element.
- Fig. 1 the schematic cross section of the ratchet wrench with a
- Fig. 2 the schematic cross section of the ratchet wrench with a
- Fig. 3 the schematic cross section of the ratchet wrench with a
- FIG. 1 shows the cross section of the ratchet wrench and a symmetrical arrangement of the individual segments 2 on the inner surface of the inner ring 1.
- the outer ring 3 which consists of two halves, is opened and the connecting element 4 (e.g. screw, nut) to be loosened or tightened is guided into the interior.
- the outer ring 3 is closed again by rotating the grip element 7.
- the individual segments 2 are held in their position by a magnetic field with the outer ring 3.
- the individual segments 2 are held magnetically distributed symmetrically over the entire circumference on the inner surface of the inner ring 1.
- Connecting elements 4 Preferably, after the individual segments 2 have come into direct contact with the surface of the surface to be loosened or fastened
- Connecting elements 4 screw, nut switched off the magnetic field.
- the shifts required for optimal adaptation to the surface shape Individual segments 2 are thereby possible without resistance.
- the magnetic holding forces cannot counteract the displacements along the circumference of the inner surface.
- the magnetic field is switched on again before the inner ring 1 opens. This prevents the individual segments 2 from falling off when the outer ring 3 is opened.
- FIG. 2 shows the schematic cross section of the head part of the ratchet wrench in the closed state after receiving a hexagonal connecting element 4 (hexagon nut).
- the individual segments 2 arranged symmetrically on the circular inner surface of the inner ring 1 exert the holding force required for releasing or tensioning the connecting element 4 onto the surface of the connecting element 4.
- the circumferential arrangement of the individual segments 2 encompasses the entire circumference of the connecting element 4.
- a sliding element 5 is pushed over the rotary bearing 6 to fix it in position. This measure creates a stable mechanical connection between the lower head part and the grip element 7.
- the locking mechanism for the ratchet function is located in the outer ring 3, as in conventional ratchet wrenches.
- FIG. 3 shows the schematic cross section of the head part of the ratchet wrench in the closed state after receiving a four-sided connecting element 4. Due to the symmetrical arrangement of the individual segments 2 over the circumference of the inner surface, the holding forces at the corner points of the connecting element 4 can be transmitted uniformly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112018007764.0T DE112018007764A5 (de) | 2018-06-28 | 2018-06-28 | Ratschenschlüssel |
PCT/DE2018/000196 WO2020001669A1 (de) | 2018-06-28 | 2018-06-28 | Ratschenschlüssel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2018/000196 WO2020001669A1 (de) | 2018-06-28 | 2018-06-28 | Ratschenschlüssel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020001669A1 true WO2020001669A1 (de) | 2020-01-02 |
Family
ID=63168223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2018/000196 WO2020001669A1 (de) | 2018-06-28 | 2018-06-28 | Ratschenschlüssel |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112018007764A5 (de) |
WO (1) | WO2020001669A1 (de) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0027238A2 (de) * | 1979-10-13 | 1981-04-22 | Hans Mesenhöller | Knarre mit am Griffstiel angelenktem Arbeitskopf |
US4631990A (en) | 1985-08-02 | 1986-12-30 | Hughes Matthew E | Open-ended ratchet wrench |
DE3904956A1 (de) | 1989-02-16 | 1990-08-23 | Rainer Balzereit | Ratschenschluessel |
US6295899B1 (en) * | 2000-07-12 | 2001-10-02 | Wen Kai Lee | Wrench for driving various fasteners |
US20080022812A1 (en) * | 2005-04-18 | 2008-01-31 | Decaprio Vincent | Open end ratchet wrench |
US8100036B2 (en) | 2010-02-17 | 2012-01-24 | Ping-Chung Huang | Ratchet wrench |
DE102013108620B4 (de) | 2012-10-05 | 2016-03-10 | Bobby Hu | Ratschenschlüssel |
DE102017005981A1 (de) * | 2017-06-23 | 2017-12-14 | Daimler Ag | Schraubeinrichtung zum Verschrauben einer Mutter mit einem Gewindebolzen und Verfahren zum Verschrauben einer Mutter mit einem Gewindebolzen mittels einer Schraubeinrichtung |
-
2018
- 2018-06-28 DE DE112018007764.0T patent/DE112018007764A5/de not_active Withdrawn
- 2018-06-28 WO PCT/DE2018/000196 patent/WO2020001669A1/de active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0027238A2 (de) * | 1979-10-13 | 1981-04-22 | Hans Mesenhöller | Knarre mit am Griffstiel angelenktem Arbeitskopf |
US4631990A (en) | 1985-08-02 | 1986-12-30 | Hughes Matthew E | Open-ended ratchet wrench |
DE3904956A1 (de) | 1989-02-16 | 1990-08-23 | Rainer Balzereit | Ratschenschluessel |
US6295899B1 (en) * | 2000-07-12 | 2001-10-02 | Wen Kai Lee | Wrench for driving various fasteners |
US20080022812A1 (en) * | 2005-04-18 | 2008-01-31 | Decaprio Vincent | Open end ratchet wrench |
US8100036B2 (en) | 2010-02-17 | 2012-01-24 | Ping-Chung Huang | Ratchet wrench |
DE102013108620B4 (de) | 2012-10-05 | 2016-03-10 | Bobby Hu | Ratschenschlüssel |
DE102017005981A1 (de) * | 2017-06-23 | 2017-12-14 | Daimler Ag | Schraubeinrichtung zum Verschrauben einer Mutter mit einem Gewindebolzen und Verfahren zum Verschrauben einer Mutter mit einem Gewindebolzen mittels einer Schraubeinrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE112018007764A5 (de) | 2021-04-08 |
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