EP0810068A1 - Socket wrench of ratchet type - Google Patents

Socket wrench of ratchet type Download PDF

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Publication number
EP0810068A1
EP0810068A1 EP96108689A EP96108689A EP0810068A1 EP 0810068 A1 EP0810068 A1 EP 0810068A1 EP 96108689 A EP96108689 A EP 96108689A EP 96108689 A EP96108689 A EP 96108689A EP 0810068 A1 EP0810068 A1 EP 0810068A1
Authority
EP
European Patent Office
Prior art keywords
cavity
ratchet
teeth
toothed
ring spanner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96108689A
Other languages
German (de)
French (fr)
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EP0810068B1 (en
Inventor
Nai-Lin Ma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hand Tool Design Corp
Original Assignee
Hand Tool Design Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US08/656,008 priority Critical patent/US5636557A/en
Application filed by Hand Tool Design Corp filed Critical Hand Tool Design Corp
Priority to EP96108689A priority patent/EP0810068B1/en
Priority to DE59604370T priority patent/DE59604370D1/en
Priority to ES96108689T priority patent/ES2144175T3/en
Publication of EP0810068A1 publication Critical patent/EP0810068A1/en
Application granted granted Critical
Publication of EP0810068B1 publication Critical patent/EP0810068B1/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • 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

Definitions

  • the present invention relates to a ratchet type ring spanner, and more particularly to an improved ring spanner that is particularly useful for mechanics.
  • FIG. 6 of the drawings illustrates a ratchet wrench which includes a handle 40 and a switch button 41 mounted in a head portion 42 thereof, which is used for this purpose , during work to change a reversible direction of a ratchet mounted in the head portion 42.
  • a disadvantage of the ratchet wrench is that a user must hold the ratchet wrench with one hand and toggle the switch knob 41 when changing the reversible direction.
  • Another disadvantage of the socket ratchet wrench is that it has a relatively large end to accommodate complex elements therein and therefore cannot be used in a limited space because additional socket wrench inserts have to be used.
  • a professional mechanic would use a combination wrench (see Figure 7 of the drawings), combination wrench, or combination wrench to tighten or loosen nuts in a limited space.
  • a common disadvantage of these wrenches is that the wrench must be removed from the nut and rotated back into engagement with the nut after it has rotated a small angle to rotate a further small angle. This process continues until the nut is tightened or loosened, which is very inconvenient, especially in a limited space.
  • a reversible ring spanner comprising a ratchet gear, which is mounted in an inner boundary surface of the head part thereof, and a cavity defined in a web area for receiving a spring and a pawl.
  • the pawl is preloaded by the spring to latch into and out of the ratchet gear to ensure the desired reversing function.
  • the cavity must be inclined to ensure proper engagement between the ratchet and the pawl, which further increases the difficulty of providing the cavity because the allowable error is extremely small.
  • the problem can be solved by increasing the thickness of the wrench head, however, the enlarged head like that of the ratchet wrench would not allow the wrench to be handled in a limited space.
  • Another object of the present invention is to provide a ratchet-type box wrench that works reliably even when foreign objects get into it.
  • a ratchet-type ring spanner in accordance with the present invention includes a handle and a head portion which includes a circular boundary wall having a receiving space therein delimits and includes a web area that connects to the handle, a cavity being defined in the web area.
  • a ratchet gear is received in the receiving space and includes a plurality of teeth in an outer boundary surface and a polygonal inner boundary surface for engagement with sides of a nut to be tightened or loosened.
  • An arcuate toothed member is inserted into the cavity and includes a plurality of teeth defined on a first side thereof and intended to engage the teeth of the ratchet gear and a second side supported against a wall which supports the Delimits cavity.
  • a stop element is inserted into the cavity and comprises a first end which is supported against the wall delimiting the cavity.
  • a spring is mounted between the stop member and the toothed member to bias the toothed member away from the stop member.
  • the first end of the stop element comprises two projections for support against the wall delimiting the cavity.
  • the serrated member includes a stub-like boss formed thereon and the stop member includes a stem that projects therefrom while the spring has a first end attached to the stub-like boss of the serrated member and a second end. which is attached to the stem of the stop element.
  • the stop element also comprises a pair of wings, each of which protrudes outwards from central sections of two longitudinal edges thereof, in a plane which is substantially perpendicular to one Longitudinal direction of the same is.
  • the wings act as a guide rail for the toothed member to disengage the toothed member from the ratchet in the event that foreign matter enters the cavity, thereby allowing the toothed member to return to its initial position for the subsequent operation without being disturbed by the foreign matter to become.
  • the wall delimiting the cavity contains a depression defined in a central part thereof, while the stop element also comprises an anchor which is formed thereon and is received in the depression.
  • a ratchet-type ring spanner according to the present invention is designated by the reference number "1" and generally comprises a handle 11 and a head part 10.
  • the head part 10 comprises a circular boundary wall 10a, which delimits therein a receiving space 12 for receiving a ratchet gear 20.
  • the boundary wall 10a includes a web area 10b, which adjoins the handle 11.
  • a cavity 13 is defined in the web area 10b, and a depression 131 is defined in a central part of a wall delimiting the cavity 13 (see FIG. 3).
  • the ratchet gear 20 includes a plurality of teeth 21 in an outer peripheral surface and a polygonal inner peripheral surface for engagement with a nut or the like.
  • An arcuate toothed member 14 is inserted into cavity 13 and includes a stub-like boss 141 formed on one end thereof and a plurality of teeth 142 defined on a first side thereof and for engagement with the teeth 21 of the ratchet gear 20 are provided.
  • a stop element which is formed by an elastic plate 15, the two projections 151 and 152, which are formed on a first end thereof, and a substantially U-shaped armature 155, which is on a second End thereof is formed and is received in the recess 131.
  • the elastic plate 15 also includes a stem 156 projecting outwardly from a central portion of one side thereof and a pair of wings 153 and 154 each projecting outward from central portions of two longitudinal edges thereof in a plane that is substantially perpendicular to a longitudinal direction of the same.
  • the stop element 15 When assembling, the stop element 15 is inserted into one side of the cavity 13, the projections 151 and 152 of the first end of the stop element 15 being firmly supported against the wall delimiting the cavity 13 and the anchor 155 being received in the recess 131.
  • the arcuate toothed element 14 is then inserted into the other side of the cavity 13, a second side of which is supported against the wall delimiting the cavity 13 and the stub-shaped extension 141 thereof is opposite the stem 156 of the stop element 15.
  • a spring 16 is mounted between the stop member 15 and the arcuate toothed member 14 by attaching a first end thereof to the stub lug 141 and a second end thereof to the stem 156, as shown in FIG. 3.
  • the ratchet gear 20 is then inserted into the receiving space 12 of the head part 10, the teeth 21 of which engage with the teeth 142 on the first side of the toothed element 14.
  • the user can move the ring spanner directly in an opposite direction, for example counterclockwise, since it offers a reversing function. This is because the spring force provided by the spring 16 pushes the toothed element 14 back to its initial position shown in Fig. 3, while the structures of the teeth 142 of the toothed element and the teeth 21 of the ratchet gear 20 make such rotation allow opposite direction.
  • the toothed element 14 since it is hindered by the foreign object, may not immediately return to its initial position when the above-mentioned backward movement is required. This is the case because the toothed element 14 cannot come loose from the ratchet gear 20. Under these conditions, the toothed element 14 is entrained by the ratchet gear 20 so that it moves further to the right (viewed from the direction of FIG. 4) and thus meets the wings 153 and 154 of the stop element 15, which consequently results in one Force leads to the stop element 15.
  • the force results in a normal force and a longitudinal force which cause the toothed element 14 to slide a certain distance along the side edges 1531 and 1541 of the wings 153 and 154 (see the arrow in FIG. 5) and thus away from the ratchet gear 20 triggers as shown in Fig. 5.
  • the wings 153 and 143 serve as a guide rail for guiding downward movements of the toothed element 14, whereby the toothed element 14 is thereby released from the ratchet gear 20.
  • the spring force provided by the spring 16 is now able to push the toothed element 14 back into its initial position shown in FIG. 3.
  • the ratchet-type ring spanner can function as usual even when foreign objects enter.
  • the foreign bodies can be removed at regular intervals or immediately after the repair work has been completed.
  • a ratchet-type ring spanner comprises a handle and a head part, which in turn comprises a circular boundary wall which delimits a receiving space therein and includes a web area which adjoins the handle, a cavity being defined in the web area.
  • a ratchet gear is received in the receiving space and includes a plurality of teeth in an outer boundary surface and a polygonal inner boundary surface.
  • An arcuate toothed member is inserted into the cavity and includes a plurality of teeth defining on a first side thereof are and are intended for engagement with the teeth of the ratchet gear, and a second side which is supported against a wall which delimits the cavity.
  • a stop element is inserted into the cavity and comprises a first end which is supported against the wall delimiting the cavity.
  • a spring is mounted between the stop member and the toothed member to bias the toothed member away from the stop member.

Abstract

The spanner includes a handle and a head portion which, in turn, includes a circular peripheral wall defining a receiving compartment in it and including a web area which connects with the handle. A cavity is defined in the web area. A ratchet wheel is received in the compartment and includes a number of teeth in an outer periphery of it and a polygonal inner periphery. An arcuate toothed member is mounted in the cavity and includes a number of teeth defined on a first side of it for engaging with the teeth of the ratchet wheel and a second side bearing against a wall defining the cavity. A stop member is mounted in the cavity and includes a first end of it bearing against the wall defining the cavity. A spring is mounted between the stop member and the toothed member to bias the toothed member away from the stop member.

Description

Hintergrund der ErfindungBackground of the Invention 1. Gebiet der Erfindung1. Field of the Invention

Die vorliegende Erfindung betrifft einen Ringschlüssel vom Ratschentyp und insbesondere einen verbesserten Ringschlüssel, der besonders nützlich für Mechaniker ist.The present invention relates to a ratchet type ring spanner, and more particularly to an improved ring spanner that is particularly useful for mechanics.

2. Beschreibung des allgemeinen Stands der Technik2. Description of the general state of the art

Handwerkzeuge spielen eine Rolle in einer zivilisierten Gesellschaft, und Schraubenschlüssel sind die wichtigsten im Bereich der Handwerkzeuge seit der Erfindung der Bolzen und Muttern. Bisher ist eine große Vielfalt von Schraubenschlüsseln verfügbar gewesen, wie Ring-Maulschlüssel, Maulschlüssel, Ringschlüssel, Steckratschenschlüssel usw. Fig. 6 der Zeichnungen erläutert einen Steckratschenschlüssel, der einen Griff 40 und einen in einem Kopfteil 42 desselben montierten Schaltknopf 41 umfaßt, welcher dazu dient, während des Arbeitseinsatzes eine umkehrbare Richtung einer in dem Kopfteil 42 montierten Ratsche zu wechseln. Ein Nachteil des Steckratschenschlüssels ist, daß ein Verwender den Steckratschenschlüssel mit einer Hand halten und den Schaltknopf 41 umstellen muß, wenn die umkehrbare Richtung gewechselt wird. Ein weiterer Nachteil des Steckratschenschlüssels ist, daß er ein relativ großes Ende aufweist, um komplexe Elemente darin aufzunehmen, und somit nicht in einem begrenzten Raum verwendet werden kann, da zusätzliche Steckschlüsseleinsätze verwendet werden müssen.Hand tools play a role in a civilized society, and wrenches have been the most important in the field of hand tools since the invention of bolts and nuts. So far, a wide variety of wrenches have been available, such as combination wrenches, combination wrenches, ring spanners, ratchet wrenches, etc. Figure 6 of the drawings illustrates a ratchet wrench which includes a handle 40 and a switch button 41 mounted in a head portion 42 thereof, which is used for this purpose , during work to change a reversible direction of a ratchet mounted in the head portion 42. A disadvantage of the ratchet wrench is that a user must hold the ratchet wrench with one hand and toggle the switch knob 41 when changing the reversible direction. Another disadvantage of the socket ratchet wrench is that it has a relatively large end to accommodate complex elements therein and therefore cannot be used in a limited space because additional socket wrench inserts have to be used.

Ein professioneller Mechaniker würde in einem begrenzten Raum einen Ring-Maulschlüssel (siehe Fig. 7 der Zeichnungen), Maulschlüssel oder Ringschlüssel verwenden, um Muttern festzuziehen oder zu lösen. Ein gemeinsamer Nachteil dieser Schraubenschlüssel ist jedoch, daß der Schraubenschlüssel nach seiner Drehung um einen geringen Winkel zur Drehung um einen weiteren geringen Winkel von der Mutter entfernt und wieder mit der Mutter in Eingriff gebracht werden muß. Dieser Vorgang dauert an, bis das Festziehen oder Lösen der Mutter vollbracht ist, was sehr unbequem ist, vor allem in einem begrenzten Raum.A professional mechanic would use a combination wrench (see Figure 7 of the drawings), combination wrench, or combination wrench to tighten or loosen nuts in a limited space. A common disadvantage of these wrenches, however, is that the wrench must be removed from the nut and rotated back into engagement with the nut after it has rotated a small angle to rotate a further small angle. This process continues until the nut is tightened or loosened, which is very inconvenient, especially in a limited space.

Um die obenerwähnten Nachteile zu beheben, ist ein reversierbarer Ringschlüssel vorgeschlagen worden, wobei ein solcher Schraubenschlüssel ein Sperrzahnrad, das in einer inneren Begrenzungsfläche des Kopfteils desselben montiert ist, und einen in einem Stegbereich desselben definierten Hohlraum zur Aufnahme einer Feder und einer Sperrklinke umfaßt. Die Sperrklinke wird von der Feder vorbelastet, um in das Sperrzahnrad einzuklinken und aus ihm auszuklinken, um die gewünschte Reversierfunktion zu gewährleisten. Es hat sich jedoch gezeigt, daß, da die Sperrklinke nur mit einem Zahn des Sperrzahnrads in Eingriff kommt, das erzielte Drehmoment relativ gering ist, und die Sperrklinke kann beschädigt werden, wenn eine relativ große Kraft ausgeübt wird. Zudem ist es sehr schwierig, einen Hohlraum in dem Stegbereich des Schraubenschlüssels mit einer Dicke von einem (1) Zentimeter vorzusehen. Überdies muß der Hohlraum schräg verlaufen, um einen richtigen Eingriff zwischen dem Sperrzahnrad und der Sperrklinke sicherzustellen, was die Schwierigkeit des Vorsehens des Hohlraums weiter erhöht, da der zulässige Fehler äußerst gering ist. Obwohl das Problem durch eine Verstärkung der Dicke des Kopfes des Schraubenschlüssels gelöst werden kann, würde jedoch der vergrößerte Kopf wie jene der Steckratschenschlüssel nicht gestatten, daß der Schraubenschlüssel in einem begrenzten Raum handgehabt wird.In order to overcome the above-mentioned disadvantages, a reversible ring spanner has been proposed, such a spanner comprising a ratchet gear, which is mounted in an inner boundary surface of the head part thereof, and a cavity defined in a web area for receiving a spring and a pawl. The pawl is preloaded by the spring to latch into and out of the ratchet gear to ensure the desired reversing function. However, it has been shown that since the pawl only engages with one tooth of the ratchet gear, the torque achieved is relatively low, and the pawl can be damaged if a relatively large force is applied. In addition, it is very difficult to provide a cavity in the land area of the wrench with a thickness of one (1) centimeter. Furthermore, the cavity must be inclined to ensure proper engagement between the ratchet and the pawl, which further increases the difficulty of providing the cavity because the allowable error is extremely small. Though the problem can be solved by increasing the thickness of the wrench head, however, the enlarged head like that of the ratchet wrench would not allow the wrench to be handled in a limited space.

Daher besteht ein langes und unerfülltes Bedürfnis nach einem verbesserten Ringschraubenschlüssel vom Ratschentyp, um die obigen Probleme zu mildern und/oder zu beseitigen.There is therefore a long and unfulfilled need for an improved ratchet-type ring wrench to alleviate and / or eliminate the above problems.

Kurze Darstellung der Erfindung: Brief description of the invention :

Es ist ein Ziel der vorliegenden Erfindung, einen Ringschlüssel vom Ratschentyp für professionelle Mechaniker zu schaffen, der leicht zu handhaben ist und bequem zusammengesetzt werden kann.It is an object of the present invention to provide a ratchet type box wrench for professional mechanics which is easy to handle and can be assembled easily.

Ein weiteres Ziel der vorliegenden Erfindung ist die Schaffung eines Ringschlüssels vom Ratschentyp, der auch noch dann, wenn Fremdkörper in diesen hineingelangen, zuverlässig funktioniert.Another object of the present invention is to provide a ratchet-type box wrench that works reliably even when foreign objects get into it.

Ein Ringschlüssel vom Ratschentyp gemäß der vorliegenden Erfindung umfaßt einen Griff und einen Kopfteil, der eine kreisförmige Begrenzungswand umfaßt, welche in diesem einen Aufnahmeraum abgrenzt und einen Stegbereich einschließt, der an den Griff anschließt, wobei in dem Stegbereich ein Hohlraum definiert ist. Ein Sperrzahnrad wird in dem Aufnahmeraum aufgenommen und umfaßt eine Mehrzahl von Zähnen in einer äußeren Begrenzungsfläche und eine polygonale innere Begrenzungsfläche für den Eingriff mit Seiten einer festzuziehenden oder zu lösenden Mutter.A ratchet-type ring spanner in accordance with the present invention includes a handle and a head portion which includes a circular boundary wall having a receiving space therein delimits and includes a web area that connects to the handle, a cavity being defined in the web area. A ratchet gear is received in the receiving space and includes a plurality of teeth in an outer boundary surface and a polygonal inner boundary surface for engagement with sides of a nut to be tightened or loosened.

In den Hohlraum ist ein bogenförmiges gezahntes Element eingefügt und umfaßt eine Mehrzahl von Zähnen, die auf einer ersten Seite desselben definiert sind und für den Eingriff mit den Zähnen des Sperrzahnrads vorgesehen sind, und eine zweite Seite, die sich gegen eine Wand abstützt, welche den Hohlraum abgrenzt. In den Hohlraum ist ein Anschlagelement eingefügt und umfaßt ein erstes Ende, das sich gegen die den Hohlraum abgrenzende Wand abstützt. Zwischen dem Anschlagelement und dem gezahnten Element ist eine Feder montiert, um das gezahnte Element von dem Anschlagelement weg vorzubelasten. Bei einer Ausführungsform der Erfindung umfaßt das erste Ende des Anschlagelements zwei Vorsprünge zur Abstützung gegen die den Hohlraum abgrenzende Wand.An arcuate toothed member is inserted into the cavity and includes a plurality of teeth defined on a first side thereof and intended to engage the teeth of the ratchet gear and a second side supported against a wall which supports the Delimits cavity. A stop element is inserted into the cavity and comprises a first end which is supported against the wall delimiting the cavity. A spring is mounted between the stop member and the toothed member to bias the toothed member away from the stop member. In one embodiment of the invention, the first end of the stop element comprises two projections for support against the wall delimiting the cavity.

Gemäß einer Erscheinungsform der Erfindung umfaßt das gezahnte Element einen darauf ausgebildeten stummelförmigen Ansatz, und das Anschlagelement umfaßt einen Stiel, der von diesem wegragt, während die Feder ein erstes Ende, das an dem stummelförmigen Ansatz des gezahnten Elements angebracht ist, und ein zweites Ende, das an dem Stiel des Anschlagelements angebracht ist, aufweist.According to one aspect of the invention, the serrated member includes a stub-like boss formed thereon and the stop member includes a stem that projects therefrom while the spring has a first end attached to the stub-like boss of the serrated member and a second end. which is attached to the stem of the stop element.

Gemäß einer weiteren Erscheinungsform der Erfindung umfaßt das Anschlagelement außerdem ein Paar Flügel, die jeweils von mittleren Abschnitten zweier Längskanten desselben nach außen ragen, in einer Ebene, die im wesentlichen senkrecht zu einer Längsrichtung desselben ist. Die Flügel wirken als Führungsschiene für das gezahnte Element zum Ausklinken des gezahnten Elements aus dem Sperrzahnrad für den Fall, daß Fremdkörper in den Hohlraum gelangen, und ermöglichen hierdurch dem gezahnten Element die Rückkehr in seine anfängliche Position für den nachfolgenden Arbeitsgang, ohne durch die Fremdkörper gestört zu werden.According to a further aspect of the invention, the stop element also comprises a pair of wings, each of which protrudes outwards from central sections of two longitudinal edges thereof, in a plane which is substantially perpendicular to one Longitudinal direction of the same is. The wings act as a guide rail for the toothed member to disengage the toothed member from the ratchet in the event that foreign matter enters the cavity, thereby allowing the toothed member to return to its initial position for the subsequent operation without being disturbed by the foreign matter to become.

Gemäß einer weiteren Erscheinungsform der Erfindung enthält die den Hohlraum abgrenzende Wand eine in einem mittleren Teil derselben definierte Vertiefung, während das Anschlagelement außerdem einen Anker umfaßt, der auf diesem ausgebildet ist und in die Vertiefung aufgenommen wird.According to a further aspect of the invention, the wall delimiting the cavity contains a depression defined in a central part thereof, while the stop element also comprises an anchor which is formed thereon and is received in the depression.

Weitere Ziele, Vorteile und neuartige Merkmale der Erfindung werden aus der folgenden genauen Beschreibung in Verbindung mit den beiliegenden Zeichnungen deutlicher werden.Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Fig. 1Fig. 1
ist eine perspektivische Ansicht von einem Teil eines Ringschlüssels vom Ratschentyp gemäß der vorliegenden Erfindung;Figure 3 is a perspective view of part of a ratchet-type ring spanner in accordance with the present invention;
Fig. 2Fig. 2
ist eine auseinandergezogene Ansicht des Ringschlüssels vom Ratschentyp in Fig. 1;Fig. 1 is an exploded view of the ratchet-type ring spanner in Fig. 1;
Fig. 3Fig. 3
ist eine Querschnittansicht des Ringschlüssels vom Ratschentyp gemäß der vorliegenden Erfindung;Fig. 4 is a cross-sectional view of the ratchet-type ring spanner according to the present invention;
Fig. 4Fig. 4
ist eine Querschnittansicht ähnlich Fig. 3, welche die Wirkungsweise des Ringschlüssels vom Ratschentyp unter normalen Bedingungen erläutert;Fig. 3 is a cross-sectional view similar to Fig. 3, illustrating the operation of the ratchet-type ring spanner under normal conditions;
Fig. 5Fig. 5
ist eine Querschnittansicht ähnlich Fig. 3, welche die Wirkungsweise des Ringschlüssels vom Ratschentyp unter der Bedingungen des Eindringens von Fremdkörpern erläutert;Fig. 3 is a cross-sectional view similar to Fig. 3, explaining the operation of the ratchet-type box wrench under the conditions of foreign object penetration;
Fig. 6Fig. 6
ist eine perspektivische Ansicht eines herkömmlichen Steckratschenschlüssels; undFig. 3 is a perspective view of a conventional ratchet wrench; and
Fig. 7Fig. 7
ist eine perspektivische Ansicht eines herkömmlichen Ring-Maulschlüssels.is a perspective view of a conventional combination wrench.
Beschreibung der bevorzugten AusführungsformDescription of the preferred embodiment

Es wird nun auf Fig. 1 bis 5 und zunächst auf Fig. 1 bis 3 Bezug genommen. Ein Ringschlüssel vom Ratschentyp gemäß der vorliegenden Erfindung ist mit dem Bezugszeichen "1" bezeichnet und umfaßt im allgemeinen einen Griff 11 und einen Kopfteil 10. Der Kopfteil 10 umfaßt eine kreisförmige Begrenzungswand 10a, welche in diesem einen Aufnahmeraum 12 zur Aufnahme eines Sperrzahnrads 20 abgrenzt. Die Begrenzungswand 10a schließt einen Stegbereich 10b ein, der an den Griff 11 anschließt. In dem Stegbereich 10b ist ein Hohlraum 13 definiert, und in einem mittleren Teil einer den Hohlraum 13 abgrenzenden Wand ist eine Vertiefung 131 definiert (siehe Fig. 3).1 to 5 and initially to FIGS. 1 to 3. A ratchet-type ring spanner according to the present invention is designated by the reference number "1" and generally comprises a handle 11 and a head part 10. The head part 10 comprises a circular boundary wall 10a, which delimits therein a receiving space 12 for receiving a ratchet gear 20. The boundary wall 10a includes a web area 10b, which adjoins the handle 11. A cavity 13 is defined in the web area 10b, and a depression 131 is defined in a central part of a wall delimiting the cavity 13 (see FIG. 3).

Laut Fig. 2 und 3 umfaßt das Sperrzahnrad 20 eine Mehrzahl von Zähnen 21 in einer äußeren Begrenzungsfläche und eine polygonale innere Begrenzungsfläche für den Eingriff mit Seiten einer Mutter oder dergleichen. In den Hohlraum 13 ist ein bogenförmiges gezahntes Element 14 eingefügt und umfaßt einen stummelförmigen Ansatz 141, der auf einem Ende desselben ausgebildet ist, sowie eine Mehrzahl von Zähnen 142, die auf einer ersten Seite desselben definiert sind und für den Eingriff mit den Zähnen 21 des Sperrzahnrads 20 vorgesehen sind. Ebenfalls in den Hohlraum 13 eingefügt ist ein Anschlagelement, das von einer elastischen Platte 15 gebildet wird, die zwei Vorsprünge 151 und 152, welche auf einem ersten Ende derselben ausgebildet sind, und einen im wesentlichen U-förmigen Anker 155 umfaßt, welcher auf einem zweiten Ende derselben ausgebildet ist und in die Vertiefung 131 aufgenommen wird. Die elastische Platte 15 umfaßt außerdem einen Stiel 156, der von einem mittleren Teil einer Seite derselben nach außen ragt, sowie ein Paar Flügel 153 und 154, die jeweils von mittleren Abschnitten zweier Längskanten derselben nach außen ragen, in einer Ebene, die im wesentlichen senkrecht zu einer Längsrichtung derselben ist.2 and 3, the ratchet gear 20 includes a plurality of teeth 21 in an outer peripheral surface and a polygonal inner peripheral surface for engagement with a nut or the like. An arcuate toothed member 14 is inserted into cavity 13 and includes a stub-like boss 141 formed on one end thereof and a plurality of teeth 142 defined on a first side thereof and for engagement with the teeth 21 of the ratchet gear 20 are provided. Also inserted into the cavity 13 is a stop element which is formed by an elastic plate 15, the two projections 151 and 152, which are formed on a first end thereof, and a substantially U-shaped armature 155, which is on a second End thereof is formed and is received in the recess 131. The elastic plate 15 also includes a stem 156 projecting outwardly from a central portion of one side thereof and a pair of wings 153 and 154 each projecting outward from central portions of two longitudinal edges thereof in a plane that is substantially perpendicular to a longitudinal direction of the same.

Beim Zusammenfügen wird das Anschlagelement 15 in eine Seite des Hohlraums 13 eingesetzt, wobei sich die Vorsprünge 151 und 152 des ersten Endes des Anschlagelements 15 fest gegen die den Hohlraum 13 abgrenzende Wand abstützen und der Anker 155 in die Vertiefung 131 aufgenommen wird. Dann wird das bogenförmige gezahnte Element 14 in die andere Seite des Hohlraums 13 eingesetzt, wobei eine zweite Seite desselben sich gegen die den Hohlraum 13 abgrenzende Wand abstützt und der stummelförmige Ansatz 141 desselben dem Stiel 156 des Anschlagelements 15 gegenüberliegt. Zwischen dem Anschlagelement 15 und dem bogenförmigen gezahnten Element 14 wird eine Feder 16 montiert, indem ein erstes Ende derselben an dem stummelförmigen Ansatz 141 angebracht wird und ein zweites Ende derselben an dem Stiel 156 angebracht wird, wie in Fig. 3 gezeigt. Dann wird das Sperrzahnrad 20 in den Aufnahmeraum 12 des Kopfteils 10 eingesetzt, wobei die Zähne 21 desselben mit den Zähnen 142 auf der ersten Seite des gezahnten Elements 14 in Eingriff kommen.When assembling, the stop element 15 is inserted into one side of the cavity 13, the projections 151 and 152 of the first end of the stop element 15 being firmly supported against the wall delimiting the cavity 13 and the anchor 155 being received in the recess 131. The arcuate toothed element 14 is then inserted into the other side of the cavity 13, a second side of which is supported against the wall delimiting the cavity 13 and the stub-shaped extension 141 thereof is opposite the stem 156 of the stop element 15. A spring 16 is mounted between the stop member 15 and the arcuate toothed member 14 by attaching a first end thereof to the stub lug 141 and a second end thereof to the stem 156, as shown in FIG. 3. The ratchet gear 20 is then inserted into the receiving space 12 of the head part 10, the teeth 21 of which engage with the teeth 142 on the first side of the toothed element 14.

Beim Arbeitseinsatz kommt eine zu lösende oder anzuziehende Mutter (nicht dargestellt) mit dem Sperrzahnrad 20 in herkömmlicher Weise in Eingriff, und der Verwender kann den Ringschlüssel so an dem Griff 11 betätigen, daß sowohl der Kopfteil 10 als auch die Mutter gezwungen werden, sich in eine erste Richtung zu drehen, z.B. im Uhrzeigersinn. Wenn der Kopfteil 10 einen gewissen Winkel durchwandert, wird das gezahnte Element 14 in die in Fig. 4 dargestellte Position bewegt (da das Sperrzahnrad 20 mit dem gezahnten Element 14 in Eingriff ist), und die Feder 16 wird folglich zusammengedrückt. Wenn es notwendig ist, den Ringschlüssel zurück in seine anfängliche Position zu bewegen, muß der Verwender den Ringschlüssel nicht anheben, um ihn von der Mutter zu lösen, und dann den Ringschlüssel senken, um ihn wieder mit der Mutter in Eingriff zu bringen. Statt dessen kann der Verwender den Ringschlüssel direkt in eine entgegengesetzte Richtung, z.B. entgegen dem Uhrzeigersinn, bewegen, da er eine Reversierfunktion bietet. Dies ist der Fall, weil die von der Feder 16 gelieferte Federkraft das gezahnte Element 14 zurück in seine in Fig. 3 gezeigte anfängliche Position drückt, während die Strukturen der Zähne 142 des gezahnten Elements und der Zähne 21 des Sperrzahnrads 20 eine solche Drehung in die entgegengesetzte Richtung zulassen.When working, there is one to be loosened or put on Nut (not shown) engages with ratchet 20 in a conventional manner and the user can operate the ring spanner on handle 11 such that both head 10 and nut are forced to rotate in a first direction, e.g. Clockwise. When the head portion 10 travels through a certain angle, the toothed member 14 is moved to the position shown in Fig. 4 (since the ratchet gear 20 is engaged with the toothed member 14), and the spring 16 is consequently compressed. If it is necessary to move the ring spanner back to its initial position, the user need not raise the ring spanner to release it from the nut and then lower the ring spanner to re-engage it with the nut. Instead, the user can move the ring spanner directly in an opposite direction, for example counterclockwise, since it offers a reversing function. This is because the spring force provided by the spring 16 pushes the toothed element 14 back to its initial position shown in Fig. 3, while the structures of the teeth 142 of the toothed element and the teeth 21 of the ratchet gear 20 make such rotation allow opposite direction.

Wenn ein Fremdkörper in den Hohlraum 13 des Kopfteils eindringt, was während einer Reparatur häufig vorkommen kann, mag das gezahnte Element 14, da es von dem Fremdkörper behindert wird, nicht gleich in seine anfängliche Position zurückkehren können, wenn die obenerwähnte Rückwärtsbewegung erforderlich ist. Dies ist der Fall, weil sich das gezahnte Element 14 nicht von dem Sperrzahnrad 20 lösen kann. Unter diesen Bedingungen wird das gezahnte Element 14 von dem Sperrzahnrad 20 mitgeführt, so daß es sich weiter nach rechts bewegt (aus der Richtung von Fig. 4 betrachtet) und somit auf die Flügel 153 und 154 des Anschlagelements 15 stößt, was folglich zu einer Kraft auf das Anschlagelement 15 führt. Die Kraft resultiert in einer Normalkraft und einer Längskraft, die bewirken, daß das gezahnte Element 14 um eine bestimmte Strecke an den Seitenkanten 1531 und 1541 der Flügel 153 und 154 entlanggleitet (siehe den Pfeil in Fig. 5) und sich somit von dem Sperrzahnrad 20 löst, wie in Fig. 5 gezeigt. Anders ausgedrückt: Die Flügel 153 und 143 dienen als Führungsschiene zur Lenkung von Abwärtsbewegungen des gezahnten Elements 14, wobei hierdurch das gezahnte Element 14 von dem Sperrzahnrad 20 gelost wird. Die von der Feder 16 gelieferte Federkraft ist nun in der Lage, das gezahnte Element 14 zurück in seine in Fig. 3 gezeigte anfängliche Position zu schieben. Folglich kann der Ringschlüssel vom Ratschentyp wie gewöhnlich funktionieren, selbst wenn Fremdkörper eintreten. Die Fremdkörper können in regelmäßigen Abständen oder unmittelbar nach Abschluß der Reparaturarbeiten entfernt werden.If a foreign object penetrates the cavity 13 of the head part, which can often occur during a repair, the toothed element 14, since it is hindered by the foreign object, may not immediately return to its initial position when the above-mentioned backward movement is required. This is the case because the toothed element 14 cannot come loose from the ratchet gear 20. Under these conditions, the toothed element 14 is entrained by the ratchet gear 20 so that it moves further to the right (viewed from the direction of FIG. 4) and thus meets the wings 153 and 154 of the stop element 15, which consequently results in one Force leads to the stop element 15. The force results in a normal force and a longitudinal force which cause the toothed element 14 to slide a certain distance along the side edges 1531 and 1541 of the wings 153 and 154 (see the arrow in FIG. 5) and thus away from the ratchet gear 20 triggers as shown in Fig. 5. In other words, the wings 153 and 143 serve as a guide rail for guiding downward movements of the toothed element 14, whereby the toothed element 14 is thereby released from the ratchet gear 20. The spring force provided by the spring 16 is now able to push the toothed element 14 back into its initial position shown in FIG. 3. As a result, the ratchet-type ring spanner can function as usual even when foreign objects enter. The foreign bodies can be removed at regular intervals or immediately after the repair work has been completed.

Obwohl die Erfindung in Zusammenhang mit ihrer bevorzugten Ausführungsform beschrieben worden ist, versteht sich, daß viele weitere mögliche Modifikationen und Veränderungen vorgenommen werden können, ohne von dem Wesen und Umfang der Erfindung, wie nachstehend beansprucht, abzuweichen.While the invention has been described in connection with its preferred embodiment, it should be understood that many other possible modifications and changes can be made without departing from the spirit and scope of the invention as claimed below.

Zusammenfassend ergibt sich folgendes:In summary, the following results:

Ein Ringschlüssel vom Ratschentyp umfaßt einen Griff und einen Kopfteil, der seinerseits eine kreisförmige Begrenzungswand umfaßt, die in diesem einen Aufnahmeraum abgrenzt und einen Stegbereich einschließt, der an den Griff anschließt, wobei in dem Stegbereich ein Hohlraum definiert ist. Ein Sperrzahnrad wird in dem Aufnahmeraum aufgenommen und umfaßt eine Mehrzahl von Zähnen in einer äußeren Begrenzungsfläche und eine polygonale innere Begrenzungsfläche. In den Hohlraum ist ein bogenförmiges gezahntes Element eingefügt und umfaßt eine Mehrzahl von Zähnen, die auf einer ersten Seite desselben definiert sind und für den Eingriff mit den Zähnen des Sperrzahnrads vorgesehen sind, und eine zweite Seite, die sich gegen eine Wand abstützt, welche den Hohlraum abgrenzt. In den Hohlraum ist ein Anschlagelement eingefügt und umfaßt ein erstes Ende, das sich gegen die den Hohlraum abgrenzende Wand abstützt. Zwischen dem Anschlagelement und dem gezahnten Element ist eine Feder montiert, um das gezahnte Element von dem Anschlagelement weg vorzubelasten.A ratchet-type ring spanner comprises a handle and a head part, which in turn comprises a circular boundary wall which delimits a receiving space therein and includes a web area which adjoins the handle, a cavity being defined in the web area. A ratchet gear is received in the receiving space and includes a plurality of teeth in an outer boundary surface and a polygonal inner boundary surface. An arcuate toothed member is inserted into the cavity and includes a plurality of teeth defining on a first side thereof are and are intended for engagement with the teeth of the ratchet gear, and a second side which is supported against a wall which delimits the cavity. A stop element is inserted into the cavity and comprises a first end which is supported against the wall delimiting the cavity. A spring is mounted between the stop member and the toothed member to bias the toothed member away from the stop member.

Claims (5)

Ringschlüssel vom Ratschentyp, umfassend einen Griff und einen Kopfteil, wobei der Kopfteil umfaßt: eine kreisförmige Begrenzungswand, die in diesem einen Aufnahmeraum abgrenzt und einen Stegbereich einschließt, der an den Griff anschließt, wobei in dem Stegbereich ein Hohlraum definiert ist, ein Sperrzahnrad, das in dem Aufnahmeraum aufgenommen wird und eine Mehrzahl von Zähnen in einer äußeren Begrenzungsfläche und eine polygonale innere Begrenzungsfläche umfaßt, ein bogenförmiges gezahntes Element, das in den Hohlraum eingefügt ist und eine Mehrzahl von Zähnen, die auf einer ersten Seite desselben definiert sind und für den Eingriff mit den Zähnen des Sperrzahnrads vorgesehen sind, und eine zweite Seite umfaßt, die sich gegen eine Wand abstützt, welche den Hohlraum abgrenzt, ein Anschlagelement, das in den Hohlraum eingefügt ist und ein erstes Ende umfaßt, welches sich gegen die den Hohlraum abgrenzende Wand abstützt, und eine Feder, die zwischen dem Anschlagelement und dem gezahnten Element montiert ist, um das gezahnte Element von dem Anschlagelement weg vorzubelasten. A ratchet-type ring spanner comprising a handle and a head part, the head part comprising: a circular boundary wall which delimits a receiving space in this and includes a web area which adjoins the handle, a cavity being defined in the web area, a ratchet gear housed in the accommodating space and comprising a plurality of teeth in an outer boundary surface and a polygonal inner boundary surface, an arcuate toothed element inserted into the cavity and comprising a plurality of teeth defined on a first side thereof and intended for engagement with the teeth of the ratchet gear and comprising a second side supported against a wall, which delimits the cavity, a stop element which is inserted into the cavity and comprises a first end which is supported against the wall defining the cavity, and a spring mounted between the stop member and the toothed member to bias the toothed member away from the stop member. Ringschlüssel vom Ratschentyp nach Anspruch 1, wobei das gezahnte Element einen darauf ausgebildeten stummelförmigen Ansatz umfaßt und das Anschlagelement einen Stiel umfaßt, der von diesem wegragt, während die Feder ein erstes Ende, das an dem stummelförmigen Ansatz des gezahnten Elements angebracht ist, und ein zweites Ende, das an dem Stiel des Anschlagelements angebracht ist, aufweist.A ratchet-type ring spanner according to claim 1, wherein the toothed member includes a stub-like boss formed thereon and the stop member includes a stem which projects therefrom, while the spring has a first end attached to the stub-like boss of the toothed member and a second End that is attached to the stem of the stop element. Ringschlüssel vom Ratschentyp nach Anspruch 1, wobei das Anschlagelement außerdem ein Paar Flügel umfaßt, die jeweils von mittleren Abschnitten zweier Längskanten desselben nach außen ragen, in einer Ebene, die im wesentlichen senkrecht zu einer Längsrichtung desselben ist.The ratchet-type ring spanner according to claim 1, wherein the stopper member further comprises a pair of wings each projecting outwardly from central portions of two longitudinal edges thereof in a plane substantially perpendicular to a longitudinal direction thereof. Ringschlüssel vom Ratschentyp nach Anspruch 1, wobei die den Hohlraum abgrenzende Wand eine in einem mittleren Teil derselben definierte Vertiefung enthält, während das Anschlagelement außerdem einen Anker umfaßt, der auf diesem ausgebildet ist und in die Vertiefung aufgenommen wird.The ratchet-type ring spanner according to claim 1, wherein the wall defining the cavity includes a recess defined in a central part thereof, while the stop member further includes an anchor formed thereon and received in the recess. Ringschlüssel vom Ratschentyp nach Anspruch 1, wobei das erste Ende des Anschlagelements zwei Vorsprünge zur Abstützung gegen die den Hohlraum abgrenzende Wand umfaßt.A ratchet-type ring spanner according to claim 1, wherein the first end of the stop member comprises two projections for support against the wall defining the cavity.
EP96108689A 1996-05-24 1996-05-30 Socket wrench of ratchet type Expired - Lifetime EP0810068B1 (en)

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US08/656,008 US5636557A (en) 1996-05-24 1996-05-24 Ratchet type ring spanner
EP96108689A EP0810068B1 (en) 1996-05-24 1996-05-30 Socket wrench of ratchet type
DE59604370T DE59604370D1 (en) 1996-05-24 1996-05-30 Ratchet type ring spanner
ES96108689T ES2144175T3 (en) 1996-05-24 1996-05-30 RATCHET TYPE STAR WRENCH.

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US08/656,008 US5636557A (en) 1996-05-24 1996-05-24 Ratchet type ring spanner
EP96108689A EP0810068B1 (en) 1996-05-24 1996-05-30 Socket wrench of ratchet type

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EP (1) EP0810068B1 (en)
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Publication number Priority date Publication date Assignee Title
EP0994765A1 (en) * 1997-06-09 2000-04-26 Hand Tool Design Corporation Ratchet type ring spanner
EP0994765A4 (en) * 1997-06-09 2000-05-24 Hand Tool Design Corp Ratchet type ring spanner
DE102009049808B4 (en) * 2009-10-16 2017-02-23 Yu Tang Chen Ratchet wrench for a pulling direction
DE102016125747B3 (en) 2016-12-27 2018-05-17 Neng-Chia Shih Elastic element for switching a ratchet wrench and shaping method therefor

Also Published As

Publication number Publication date
EP0810068B1 (en) 2000-02-02
ES2144175T3 (en) 2000-06-01
US5636557A (en) 1997-06-10
DE59604370D1 (en) 2000-03-09

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