DE102022000203A1 - Pipe wrench with adjustable mouth width - Google Patents

Abstract

A pipe wrench (1) has a pliers head (10) with a pliers mouth (11) having clamping jaws (31, 51). The pipe wrench (1) further comprises a first limb (30) and a second limb (50), which each have one of the clamping jaws (31, 51) and a grip section (32; 52) and are set up to be pivoted in relation to one another. Furthermore, the pipe wrench (1) comprises an adjusting mechanism (70) which is set up to move the first shank (30) and the second shank (50) relative to one another between a storage setting (A) and a use setting (G), wherein in the Storage setting (A) the jaws of the pliers (11) are closed and in the use setting (G) the jaws of the pliers (11) are open with the jaw width set to the stop. An adjustment aid is provided which has a display (90) for showing a preselected mouth width. The adjuster is arranged so that the indicator (90) is correctly perceived when the wrench (1) is in the storage setting (A), whereas in the use setting (G) the adjuster is in a zero position (N).

Description

technical field

The present disclosure relates to an adjustable jaw wrench. Such pipe wrenches are generally known and are described, for example, in the 2012/2013 product catalog from Rothenberger Werkzeuge GmbH on pages 296 and 297. The pipe wrenches are usually used in sanitary installations and in heating and ventilation construction and are used, for example, to hold and/or forcefully rotate pipes or other fastening elements of the pipe installation.

Technical problem

Against this background, a practical need can be recognized in proposing at least one possibility for facilitating the setting of the jaw width in a pipe wrench of the type mentioned at the outset.

concepts

In principle, the task can be solved with a pipe wrench which has the features of claim 1 . Advantageous embodiments and/or configurations and/or conceptual aspects result from the dependent claims, the following description and a figure.

A basic pipe wrench comprises a tong head with a jawed jaw, for example for clampingly receiving a workpiece such as a pipe or pipe sleeve or union nut. In particular, the pipe wrench comprises a first limb and a second limb. In particular, the first limb of the pliers and the second limb of the pliers have one of the clamping jaws, in particular one of the clamping jaws each. In particular, the first limb of the pliers and the second limb of the pliers also have a grip section, in particular a grip section each.

In particular, the first limb of the pliers and the second limb of the pliers are designed to be pivoted in relation to one another, for example in order to move the clamping jaws into a clamping position against the workpiece by moving the grip sections towards one another. For example, the first limb of the pliers and the second limb of the pliers are arranged crosswise at a crossing point and are in particular set up to be pivoted towards one another about a pivot axis in the region of the crossing point.

In particular, the pipe wrench also includes an adjusting mechanism for setting or adjusting an opening width. The adjusting mechanism is set up in particular to move the first limb of the pliers and the second limb of the pliers relative to one another between a storage setting and a use setting.

In the present description, the term "storage setting" means a setting in which the jaws of the pliers are closed. A "closed pliers mouth" means in particular that the jaw width has a zero value. In principle, this can also be understood to mean that the mouth width has a minimum value that differs from the zero value, for example. In the storage setting, the first limb of the pliers and the second limb of the pliers are preferably in a pivoted starting position relative to one another, for example in a pivoted zero position.

In the present description, the term "usage setting" is to be understood as meaning a setting in which the jaws of the pliers are open to the stop. In particular, in the use setting, the jaws of the pliers have a set jaw width.

In the present description, the term “jaw width” is to be understood in particular as meaning the width of an existing opening in the jaws of the pliers. For example, the opening of the pliers mouth is formed by a distance between gripping surfaces which are formed on the jaws of the pipe wrench. By shifting the first limb of the pliers relative to the second limb of the pliers, the jaw width can be set or adjusted.

In one embodiment, an adjustment aid with a display for showing a preselected mouth width is provided. For example, the display is designed as a display that can be perceived optically and/or haptically. This makes it easier for a user of the pipe wrench to adjust the jaw width to a desired value.

In particular, the setting aid is arranged so that the display can be correctly perceived when the wrench is in the storage setting. This means that the preselected jaw width remains displayed when the pipe wrench is or is being stowed away compactly.

In particular, the adjustment aid and/or the display is in a zero position or a zero point in the usage setting. In the use setting, in which the jaws of the pliers are open to the stop, the setting made for the preselected jaw width is over to the stop taken, so that in the use setting the jaw of the pliers has the preselected mouth width as the set mouth width.

In a further embodiment, the adjusting mechanism comprises a support member which is pivoted on the one hand on the first pliers leg and on the other hand, in particular in the use setting, is supported against an adjustment element which is assigned to the second pliers leg, in particular is arranged thereon. For example, the support member is pivoted in the area of the pliers head on the first pliers leg. For example, the adjustment element is assigned to the second limb of the pliers in the area between the crossing point and its grip section. The adjustment element is set up in particular to be adjusted relative to the second limb in the direction of its longitudinal extent, for example in order to thereby achieve an adjustment and/or setting of the jaw width.

In particular, it is provided that the display has an indicator which is designed, for example, to be used to display information about the preselected jaw width. In particular, it is provided that the indicator is arranged on the setting element, in particular is formed.

By assigning the indicator to the setting element, an already existing functional part of the pipe wrench is used. This favors a realization that is simple in terms of production technology. The adjustment element also has the advantage with regard to the indicator that it changes its position relative to the second pliers arm when the jaw width is adjusted. As explained above, this change in position is used by the adjustment aid.

In the present description, the term “indicator” is to be understood in particular as an aid in order to be able to display the preselected rim width or at least information about the preselected rim width.

In a further embodiment, the adjustment element is designed as a nut element or has a nut element. In particular, the nut element is in threaded engagement on a threaded portion so as to be rotatable about an axis of rotation. In particular, the threaded section is arranged on the second pliers arm. For example, the threaded section is arranged on the second limb of the pliers in the area between the crossing point and the handle section.

In particular, provision is made for the indicator on the setting element or nut element to be optically and/or haptically perceptible from a number of angular directions. As a result, the indicator can be perceived by the user of the pipe wrench independently or at least largely independently of the rotational position of the adjusting element or nut element.

The measure that, according to one embodiment, the indicator has or consists of a marking that runs around the axis of rotation and that the marking can be perceived optically and/or haptically also aims in this direction. For example, the marking is an elevation or depression present on the outer circumference of the adjusting element or nut element. Such a marking facilitates simple and inexpensive manufacture of the indicator. The indentation can be introduced into the outer circumference of the adjustment element or nut element by removing material. The elevation can be produced by removing material from the outer circumference of the adjustment element or nut element.

A possible embodiment is that the marking extends linearly around the axis of rotation. The linear design makes it easier to perceive the preselected mouth width with a high level of dimensional accuracy. The marking can be a linear indentation, for example in the form of a groove or bead. Alternatively, the marking can be a linear elevation, for example in the form of a linear thickening, in particular a bead.

In a further embodiment, the setting aid, in particular the display, has a scale. In particular, it is provided that the scale displays optically and/or haptically perceptible information about a value of a preselectable jaw width at at least one predetermined point. Using the scale and in combination with the indicator, it is possible to obtain information about the preselected rim width, in particular to identify the preselected rim width. As a result, a further measure is taken to make it easier for the user to recognize the preselected jaw width. For example, the scale is arranged on the first caliper lever, in particular formed on it.

According to one aspect, use of the above-described pipe wrench for sanitary installation and/or for heating and/or ventilation construction is proposed, for example to carry out work on pipes, fittings and/or associated fastenings, such as sleeves or union nuts.

character list

• 1 eine mögliche Ausführungsform einer Rohrzange in einer Aufbewahrungseinstellung mit einer Einstellhilfe in Nullstellung,;
• 2 die Rohrzange der 1 in der Aufbewahrungseinstellung, wobei die Einstellhilfe eine vorgewählte Maulweite anzeigt, und;
• 3 die Rohrzange der 1 in einer Gebrauchseinstellung, in der die vorgewählte Maulweite in eine eingestellte Maulweite überführt ist.

Further details and features of the concepts presented above result from the following description of an exemplary embodiment with the aid of several drawings. Show it:

• 1 a possible embodiment of a pipe wrench in a storage setting with an adjustment aid in the zero position;
• 2 the pipe wrench 1 in the storage setting, with the setting guide indicating a preselected rim width, and;
• 3 the pipe wrench 1 in a use setting in which the preselected rim width is translated into a set rim width.

exemplary embodiments

1 shows a pipe wrench 1 in a schematic representation. The pipe wrench 1 is suitable for use in sanitary installations and/or in heating and ventilation construction. The pipe wrench 1 can be used to work on pipes, fittings and/or associated fastening elements, such as sleeves or union nuts.

The pipe wrench 1 preferably comprises a pliers head 10 with clamping jaws 31, 51, which form a pliers mouth 11 in order to receive and/or clamp a workpiece therein. The clamping jaws 31, 51 preferably have a clamping surface 31.1, 51.1 in order to be brought into clamping contact against the workpiece, for example when the workpiece is held in the jaw 11 of the pliers. The clamping surfaces 31.1, 51.1 are preferably arranged at least partially opposite one another.

The pipe wrench 1 preferably also comprises a first limb 30 and a second limb 50. The first limb 30 and the second limb 50 preferably have one of the clamping jaws 31, 51 and a grip section 32, 52. The first limb 30 and the second limb 50 of the pliers are preferably arranged crosswise at a crossing point 2 and are set up to be pivoted relative to one another about a pivot axis in the region of the crossing point 2 . This causes the jaws 31, 51 to move into a clamping position against the workpiece as the handle portions 32, 52 are moved towards each other.

In order to form the crossing point 2 , the second limb 50 can have a through-opening 54 in an intermediate section 53 , in particular a slot extending in the longitudinal direction of the second limb 50 . The through-opening 54 is set up, for example, in order to thread the first limb 30 of the pliers through the through-opening 54 in the direction of its gripping section 32 . For example, the intermediate section 53 is arranged, in particular formed, between the clamping jaw 51 and the grip section 52 of the second pliers arm 50 .

The pipe wrench 1 preferably has an adjusting mechanism 70 for adjusting the jaw width between the clamping jaws 31, 51. The adjusting mechanism 70 can include a support member 71 which is, for example, pivoted in the region of the pliers head 10 on the first pliers arm 31 and is set up to be supported against an adjustment element 72 . For example, the support member 71 is pivoted to a bend 33 which is arranged on the first limb 30 between the clamping jaw 31 and a crossing section 34 which extends over the crossing point 2 .

The setting element 72 is preferably assigned to the second pliers arm 50 and is set up to be adjusted relative to the second pliers arm 50 in the direction of its longitudinal extent. The adjusting element 72 can be a nut element 73 . For example, the nut element 73 interacts with a threaded section 55 and can be rotated about an axis of rotation 56 thereon. For example, the threaded section 55 is arranged on the second pliers arm 50, preferably in the area between the crossing point 2 and the handle section 52, in particular formed thereon. As a result, by means of a rotary movement of the nut element 72 about the axis of rotation 56, the first limb 30 and the second limb 50 can be axially displaced relative to one another and the jaw width can thus be changed, in particular set or adjusted. In principle, the threaded section 55 can also extend into the handle section 52 .

the 1 shows the pipe wrench 1 in a storage setting A. In the storage setting A, the clamp mouth 11 is preferably closed. Furthermore, in the storage setting A, the first tong limb 30 and the second tong limb 50 are preferably in a pivoted zero position relative to one another. In the storage setting A, the setting element 72 can be brought into such a position relative to the second limb 50 that the support member 71 is supported against the setting element 72 . This position of the adjustment element 72 is in the 1 shown.

In order to set a desired mouth width, the setting element 72 is to be adjusted in the direction of the longitudinal extent of the second pliers arm 50 . Based on the position of the adjustment element 72 of 1 For example, the adjustment element 72 is to be understood in the direction of the handle section 52 or towards the free end of the handle section 52 on the longitudinal side. As a result, a mouth width is preselected. 2 shows an example of the pipe wrench 1 in the storage setting A, with a preselected jaw width being set by the setting element 72 .

The preselected jaw width is converted into a corresponding jaw width on the jaws of the pliers 11 by the second limb 50 being displaced relative to the first limb 30 until the support member 71 strikes the setting element 72 . The pipe wrench 1 is now in a use setting G with a correspondingly set mouth width. 3 shows an example of the pipe wrench 1 in the usage setting G.

The pipe wrench 1 preferably has an adjustment aid. The adjustment aid preferably has a display 90 for showing the preselected jaw width. The setting aid is preferably set up such that the display 90 can be seen correctly when the pipe wrench 1 is in the storage setting A, with the setting aid being in a zero position N in the use setting G, for example ( 3 ). The zero position N can also be in the storage setting A, for example the support member 71 is supported against the adjustment element 72, as shown in FIG 1 is evident.

The display 90 preferably has an indicator 91 which is assigned to the setting element 72 or the nut element 73 . The indicator 91 on the setting element 72 or nut element 73 can preferably be perceived optically and/or haptically from a number of angular directions. For this purpose, the indicator 91 can have or be formed from a marking 92 running around the axis of rotation 56 on the nut element 72 , the marking 92 preferably being optically and/or haptically perceptible.

The marking 92 can be an indentation in the nut element 73 or an elevation on the nut element 73 . The marking 92 preferably extends linearly around the axis of rotation 56. Such a linear marking can be a linear depression, for example in the form of a groove or bead. Such a line-shaped marking can also be a line-shaped thickening or line-shaped elevation, which is designed, for example, in the manner of a bead.

The display 90 can also have a scale 93 . The scale 93 can display optically and/or haptically perceptible information about a value of a preselectable jaw width at at least one predetermined point 94 . The scale 93 is preferably arranged on the first caliper lever 30 . For example, the scale 93 is arranged on the first pliers lever 30 in the area of the handle section 32 and/or adjacent to the handle section 32 . If the indicator 91 points to the predetermined position 94 by adjusting the setting element 72, the preselected mouth width can be recognized by the user on the scale 93, in particular read off.

For example, a further marking 96 is formed at the predetermined point 94, which is optically and/or haptically perceptible. The further marking 96 can be or have an interruption or gap in an elevation, in particular an elongated elevation, extending in the longitudinal direction of the pipe wrench 1 . In addition or as an alternative, the further marking 96 can display the value for the preselected mouth width, in particular directly and/or directly. For this purpose, the further marking 96 can have a symbol and/or a value 95, for example in which the symbol or value 95 is formed on the pipe wrench 1 so that it can be perceived visually and/or haptically.

In principle, the scale 93 can also display optically and/or haptically perceptible information about a value of a further preselectable mouth width at further predetermined points 94', 94". At least one of the further predetermined points 94', 94" can also display a symbol and/or or value 95' or 95" for the value of the associated preselectable mouth width.

reference list

1

pipe wrench

2

crossing point

10

pliers head

11

pincer mouth

30

first pliers leg

31

jaw

31.1

clamping surface

32

handle section

33

offset

34

crossing section

50

second pliers handle

51

jaw

51.1

clamping surface

52

handle section

53

intermediate section

54

passage opening

55

threaded section

56

axis of rotation

70

adjusting mechanism

71

support member

72

adjustment element

73

mother element

90

advertisement

91

indicator

92

mark

93

scale

94

Job

94'

further position

94"

further position

95

indication of value

95'

further indication of value

95"

further indication of value

96

further marking

A

retention setting

G

usage setting

N

zero position

Claims (7)

Pipe wrench (1), comprising a tong head (10) with a tong mouth (11) having clamping jaws (31, 51), a first tong leg (30) and a second tong leg (50), which each have one of the clamping jaws (31, 51) and have a handle section (32; 52) and are set up to be pivoted relative to one another, and an adjusting mechanism (70) which is set up to move the first tong leg (30) and the second tong leg (50) relative to one another between a storage setting (A) and a usage setting (G), wherein in the storage setting (A) the pliers mouth (11) is closed and in the usage setting (G) the pliers mouth (11) with the mouth width set is open to the stop, characterized by an adjustment aid with a display ( 90) for displaying a preselected mouth width, the setting aid being set up so that the display (90) can be correctly perceived when the pipe wrench (1) is in the storage setting ment (A), and in the use setting (G) the setting aid is in a zero position (N). pipe wrench after claim 1 , characterized in that the adjusting mechanism (70) comprises a support member (71) which is pivoted on the one hand on the first pliers arm (30) and on the other hand is supported in the use setting (G) against an adjusting element (72) which is attached to the second pliers arm (50) and is set up to be adjusted relative to the second limb (50) in the direction of its longitudinal extent, and that the display (90) has an indicator (91) which is arranged on the adjusting element (72). pipe wrench after claim 2 , characterized in that the adjusting element (72) is a nut element (73) which is rotatably engaged on a threaded section (55) about an axis of rotation (56) and the threaded section (55) is arranged on the second pliers arm (50). , and that the indicator (91) on the nut element (73) can be perceived optically and/or haptically from a number of angular directions. pipe wrench after claim 3 , characterized in that the indicator (91) has a marking (92) which runs around the axis of rotation (56) and can be perceived optically and/or haptically. pipe wrench after claim 4 , characterized in that the marking (92) extends linearly around the axis of rotation (56). Pipe wrench according to one of the preceding claims, characterized in that the display (90) has a scale (93) which displays optically and/or haptically perceptible information about a value (95) of a preselectable jaw width at at least one predetermined point (94). , so that the preselected mouth width can be identified above and using the indicator (91). pipe wrench after claim 6 , characterized in that the scale (93) is arranged on the first caliper lever (30).

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