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EP3922414B1 - Boitier - Google Patents

Boitier

Info

Publication number
EP3922414B1
EP3922414B1 EP20178898.1A EP20178898A EP3922414B1 EP 3922414 B1 EP3922414 B1 EP 3922414B1 EP 20178898 A EP20178898 A EP 20178898A EP 3922414 B1 EP3922414 B1 EP 3922414B1
Authority
EP
European Patent Office
Prior art keywords
rib
housing
shell
housing shell
transverse direction
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.)
Active
Application number
EP20178898.1A
Other languages
German (de)
English (en)
Other versions
EP3922414A1 (fr
Inventor
Jonathan Seiz
Markus Oesterle
Thomas Haag
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.)
Andreas Stihl AG and Co KG
Original Assignee
Andreas Stihl AG and Co KG
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
Application filed by Andreas Stihl AG and Co KG filed Critical Andreas Stihl AG and Co KG
Priority to EP20178898.1A priority Critical patent/EP3922414B1/fr
Priority to US17/308,326 priority patent/US11787035B2/en
Priority to CN202110495406.1A priority patent/CN113770980B/zh
Publication of EP3922414A1 publication Critical patent/EP3922414A1/fr
Application granted granted Critical
Publication of EP3922414B1 publication Critical patent/EP3922414B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams

Definitions

  • the invention relates to a housing for a hand-held working device according to the preamble of claim 1.
  • a hand-held tool according to the preamble of claim 1 with two housing halves is known.
  • One housing half has a rib on its outer wall, which is press-fitted into a groove in the outer wall of the other housing half. This creates a separating resistance between the two housing halves.
  • Such housings can be damaged, especially if dropped from hip height.
  • a hammer drill is known in which one housing half has a screw dome that protrudes into the other housing half.
  • the invention is based on the object of developing a generic housing in such a way that it is designed to be stable.
  • the first rib projects beyond the parting plane into the second housing shell.
  • first measuring points exist in the parting plane at which the first rib height is at least 30%, in particular at least 45%, preferably at least 60% of the second shell height.
  • the second housing shell has a second rib which extends in the transverse direction and projects beyond the parting plane into the first housing shell.
  • the second rib extends from the second outer wall of the second housing shell in the transverse direction towards the first housing shell.
  • the second rib projects into the first housing shell.
  • the second rib has a second rib height measured in the transverse direction from a second measuring point in the parting plane to a second end of the second rib facing the first housing shell.
  • the first housing shell has a first shell height measured in the transverse direction from the same second measuring point in the parting plane to a first inner side of the first housing shell facing the second housing shell.
  • the first rib has a first maximum wall thickness measured perpendicular to the transverse direction in a wall thickness direction.
  • a rib spacing measured in the wall thickness direction between the first rib and the second rib is less than the first maximum wall thickness, in particular less than two-thirds of the first maximum wall thickness.
  • the housing is stiffened in the area where the rib spacing is less than the first maximum wall thickness, in particular less than two-thirds of the first maximum wall thickness.
  • the stiffening is achieved through the interaction of the first and second ribs.
  • Thicker ribs in a single housing shell would also result in greater stiffening.
  • thicker ribs have the further disadvantage of creating unsightly sink marks opposite the rib base on the outside of the first housing wall. This can be avoided by reinforcing the housing with first and second ribs with a rib spacing of less than the first maximum wall thickness, in particular less than two-thirds of the first maximum wall thickness. This results in an attractive visual design while simultaneously maintaining high stability and strength of the housing.
  • stiffening by the rib spacing of less than the first maximum wall thickness, in particular less than two thirds of the first maximum wall thickness, can be achieved in a simple manner, in particular in comparison to the use of a separate stiffening component which is introduced between the two housing shells.
  • the rib spacing is at least 1%, in particular at least 5%, of the first maximum wall thickness. This ensures that in the event of external deformation of the housing, for example, during an impact, the first and second ribs rest against each other, allowing energy to be transferred from one to the other.
  • the rib spacing is essentially constant.
  • a wall thickness of the first rib measured in the wall thickness direction deviates in the transverse direction by less than 10% from the first maximum wall thickness.
  • the first rib extends on both sides of the parting plane.
  • the first rib has at least a first region that is arranged at a first distance from the second outer wall, measured in the parting plane perpendicular to the second outer wall. This increases the stability of the housing even in the region spaced from the outer wall.
  • the first rib is conveniently attached to the first outer wall.
  • the first rib is attached transversely with its first rib base to the first outer wall. This allows forces to be transferred between the first outer wall and the first rib.
  • the first rib is formed of the same material as the first outer wall. This creates a stable connection between the first rib and the first outer wall.
  • the first rib has a first shell spacing, measured in the transverse direction, from the second housing shell, and that the first shell spacing is greater than 40% of the first maximum wall thickness of the first rib. This allows the housing to be designed such that the first rib and the second rib overlap over a large area in the transverse direction. The first rib is thus supported close to a second rib base of the second rib, allowing forces to be effectively absorbed and transmitted.
  • the first housing shell has at least two first ribs.
  • the at least two first ribs expediently have an intersection point when viewed in the transverse direction.
  • the intersecting first ribs create a stable structure that increases the stability of the housing.
  • the intersection point has a first cross-distance from the first housing wall when viewed in the transverse direction.
  • the at least two first ribs expediently extend in the transverse direction from the intersection point to the first housing wall.
  • forces can be transmitted between the intersection point and the first housing wall.
  • the at least two first ribs can contribute to absorbing forces via the intersection point. As a result, forces are distributed more evenly and can be absorbed more easily by the housing without damage.
  • the first housing shell expediently has a plurality of first ribs.
  • the second housing shell has a plurality of second ribs.
  • the plurality of first ribs and the plurality of second ribs have a total length measured in the parting plane.
  • the plurality of first ribs and the plurality of second ribs are bounded in the parting plane by an enveloping polygon.
  • the vertices of the polygon lie at endpoints of the plurality of first ribs. and the plurality of second ribs in the parting plane.
  • the polygon has a polygonal surface.
  • the quotient of the total length of the plurality of first ribs and the plurality of second ribs and the polygonal surface is at least 0.2 mm -1 . This results in a sufficiently high rib density for high housing stability.
  • the first rib expediently has a first recess.
  • the second housing shell has a second reinforcing rib.
  • the second reinforcing rib extends from the second housing wall in the transverse direction towards the first housing shell.
  • the second reinforcing rib extends exclusively on one side of the parting plane.
  • the second reinforcing rib is a second rib of the second housing shell and projects beyond the parting plane into the first housing shell.
  • the second reinforcing rib projects in the transverse direction into the first recess of the first rib.
  • the second reinforcing rib crosses the recess of the first rib in a direction perpendicular to the transverse direction.
  • At least some of the plurality of first ribs form a closed structure extending around the transverse direction.
  • This closed structure allows the plurality of first ribs of the second part of the plurality of first ribs to transmit forces to one another. This increases the stability of the housing.
  • the first housing shell and the second housing shell are useful injection-molded parts.
  • the housing is a handle housing.
  • a control element for operating the implement is conveniently arranged on the handle housing.
  • the first rib intersects the parting plane over a summed first length and that the first rib has first measuring points over at least half of the summed first length, at which measuring points the first rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated second shell height.
  • the rib spacing between the first rib of the first housing shell and the second rib of the second housing shell over at least half of the summed first length of the first rib is less than the first maximum wall thickness of the first rib, in particular less than two-thirds of the first maximum wall thickness of the first rib.
  • the second rib intersects the parting plane over a summed second length and that the second rib has first measuring points over at least half of the summed second length, at which the second rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated second shell height.
  • Fig. 1 shows a handheld tool 2.
  • the handheld tool 2 is a vacuum and blower.
  • the tool can also be, for example, a chainsaw, a brush cutter, a power cutter, or the like.
  • the working device 2 has a housing 1.
  • the housing 1 is a handle housing.
  • the housing can also be any other type of housing, for example, a motor housing or the like.
  • the working device 2 has an operating element 5.
  • the operating element 5 is a throttle lever.
  • a motor (not shown) of the working device 2 can be operated using the operating element 5.
  • the operating element 5 protrudes from the housing 1.
  • the housing 1 has a first housing shell 10 and a second housing shell 20.
  • the operating element 5 is arranged between the first housing shell 10 and the second housing shell 20.
  • the first housing shell 10 and the second housing shell 20 are each manufactured using a demolding process.
  • the first housing shell 10 and the second housing shell 20 are made of plastic.
  • the first housing shell 10 and the second housing shell 20 are each manufactured using an injection molding process.
  • the first housing shell 10 and the second housing shell 20 are injection-molded parts.
  • Fig. 2 a transverse direction 50 is shown. During assembly of the housing 1, the first housing shell 10 and the second housing shell 20 are brought closer together in the transverse direction 50 so that they rest against one another.
  • the transverse direction 50 points in two opposite directions.
  • the transverse direction 50 corresponds to the demolding direction during demolding of the first housing shell 10.
  • the transverse direction 50 corresponds to the demolding direction during demolding of the second housing shell 20.
  • the demolding direction refers to the direction in which the molds for the respective housing shell 10, 20 are removed during demolding. This refers to the normal demolding direction.
  • the direction in which slides are removed to form undercuts is not referred to by the term demolding direction.
  • Fig. 3 shows the first housing shell 10 in a perspective view.
  • the first housing shell 10 has a first inner side 18, which, in the assembled state of the housing 1, faces the second housing shell 20.
  • the first inner side 18 is at least partially delimited by a first outer wall 11.
  • the first outer wall 11 forms part of an outer side of the housing 1.
  • the first outer wall 11 has a first end face 12.
  • the first end face 12 faces the second housing shell 20.
  • the first housing shell 10 rests with its first end face 12 against the second housing shell 20.
  • the first end face 12 runs at least partially perpendicular to the transverse direction 50.
  • Fig. 4 shows the second housing shell 20.
  • the second housing shell 20 has a second inner side 28, which, in the assembled state of the housing 1, faces the first housing shell 10.
  • the second inner side 28 is at least partially delimited by a second outer wall 21.
  • the second outer wall 21 forms part of an outer side of the housing 1.
  • the second outer wall 21 has a second end face 22.
  • the second end face 22 faces the first housing shell 10.
  • the second housing shell 20 rests with its second end face 22 against the first housing shell 10.
  • the second end face 22 runs at least partially perpendicular to the transverse direction 50.
  • the first outer wall 11 and the second outer wall 21 form an outer side of the housing 1.
  • Cross bracing in the interior of the housing 1 is excluded from the term outer wall.
  • the adjacent housing shells 10 and 20 are shown in particular in Figures 13 to 15. From the overview of the Figures 3, 4 and 13 or 14 It can be seen that the first outer wall 11 of the first housing shell 10 and the second outer wall 21 of the second housing shell 20 at least partially abut one another along a parting plane 3. In the parting plane 3, the first housing shell 10 and the second housing shell 20 touch each other.
  • the parting plane 3 runs transversely to the transverse direction 50. In the exemplary embodiment, the parting plane 3 runs perpendicular to the transverse direction 50. In the parting plane 3, the first housing shell 10 and the second housing shell 20 touch each other in the transverse direction 50.
  • the first end face 12 of the first outer wall 11 has a first projection 19.
  • the second end face 22 of the second outer wall 21 has a second projection 29.
  • the first projection 19 protrudes in the transverse direction 50 in the direction of the second housing shell 20 beyond a first end face base 51 of the first end face 12 ( Fig. 14 ).
  • the second projection 29 is in the transverse direction 50 in towards the first housing shell 10 beyond a second end base 61 of the second end face 22.
  • the second projection 29 is arranged closer to an outer side of the housing 1 than the first projection 19.
  • An outer side of the second projection 29 is part of the outer side of the housing 1.
  • the first projection 19 corresponds to the second projection 29.
  • the second projection 29 and the first projection 19 overlap with respect to the transverse direction 50.
  • the second projection 29 at least partially encompasses an outer side of the first projection 19.
  • the first housing shell 10 and the second housing shell 20 are positioned relative to one another by means of the first projection 19 and the second projection 29. It can be provided that an outer side of the first projection 19 rests against an inner side of the second projection 29.
  • the first projection 19 is delimited by a first front surface 52.
  • the first front surface 52 faces the second housing shell 20.
  • the first front surface 52 abuts the second end face 61 of the second end face 22 of the second outer wall 21.
  • the first front surface 52 and the second end face 61 abut one another in the parting plane 3.
  • the second projection 29 projects beyond the parting plane 3 in the transverse direction 50 toward the first housing shell 10.
  • the second projection 29 is delimited in the transverse direction 50 by a second front surface 62.
  • a joint 31 is formed between the second front surface 62 of the second projection 29 and the first end face 51 of the first end face 12.
  • the joint 31 is visible on the outside of the housing 1.
  • a bottom of the joint 31 is formed by the first projection 19.
  • the joint 31 runs between the first housing shell 10 and the second housing shell 20. In the exemplary embodiment, the joint 31 runs outside the parting plane 3.
  • the first outer wall 11 and the second outer wall 21 define a cavity in the interior of the housing 1.
  • a first rib 13 is arranged in the first housing shell 10 ( Fig. 3 ).
  • the first Rib 13 extends from the first outer wall 11 of the first housing shell 10 in the transverse direction 50 towards the second housing shell 20.
  • the first rib 13 protrudes in the transverse direction 50 beyond the parting plane 3.
  • the first rib 13 projects into the second housing shell 20.
  • the first housing shell 10 has a plurality of first ribs 13, 33, 53, 54, 55, as shown in Fig. 3 visible.
  • first ribs 13, 33, 53, 54 and 55 protrude beyond the parting plane 3.
  • the first rib 13, 33, 53, 54, 55 is fixed to the first outer wall 11.
  • the first rib 13 is fixed with its first rib base 14 to the first outer wall 11 ( Fig. 13 ).
  • the first rib 13, 33, 53, 54, 55 is formed of the same material as the first outer wall 11.
  • the first rib 13, 33, 53, 54, 55 is manufactured together with the first outer wall 11 in an injection molding process.
  • the first rib 13, 33, 53, 54, 55 extends on both sides of the parting plane 3.
  • the first ribs 33, 54 and 55 together form a closed structure surrounding the transverse direction 50 ( Fig. 3 ).
  • a first reinforcing rib 56 is arranged on the inside of the first outer wall 11.
  • the first reinforcing rib 56 is fixed to the first outer wall 11.
  • the first reinforcing rib 56 extends from the first outer wall 11 in the transverse direction 50 toward the second housing shell 20.
  • the first reinforcing rib 56 is arranged exclusively on one side of the parting plane 3.
  • the first reinforcing rib 56 advantageously connects the first rib 13 to the first rib 53.
  • the first ribs 13 and 53, together with the first reinforcing rib 56 form a closed structure extending around the transverse direction 50.
  • Fig. 4 shows the second housing shell 20 viewed from its inside.
  • the second housing shell 20 has a second rib 23.
  • the second rib 23 extends from the second outer wall 21 of the second housing shell 20 in the transverse direction. 50 towards the first housing shell 10.
  • the second rib 23 protrudes in the transverse direction 50 beyond the parting plane 3.
  • the second rib 23 projects into the first housing shell 10.
  • the second housing shell 20 has a plurality of second ribs 23, 43, 63 ( Fig. 4 ). All of these second ribs 23, 43 and 63 protrude beyond the parting plane 3.
  • the second rib 23, 43, 63 is fixed to the second outer wall 21.
  • the second rib 23 is fixed with its second rib base 24 to the second outer wall 21 ( Fig. 15 ).
  • the second rib 23, 43, 63 is formed of the same material as the second outer wall 21.
  • the second rib 23, 43, 63 is manufactured together with the second outer wall 21 using an injection molding process.
  • a second reinforcing rib 27 is arranged on the inside of the second outer wall 21.
  • the second reinforcing rib 27 is fixed to the second outer wall 21.
  • the second reinforcing rib 27 extends from the second outer wall 21 in the transverse direction 50 towards the first housing shell 10.
  • the second reinforcing rib 27 is arranged exclusively on one side of the parting plane 3.
  • the second reinforcing rib 27 advantageously connects the second rib 23 to the second rib 43.
  • the second ribs 23 and 43, together with the second reinforcing rib 27, form a closed structure which runs around the transverse direction 50.
  • Fig. 5 shows a side view of the inside of the first housing shell 10 in the transverse direction 50.
  • Fig. 6 shows a side view of the inside of the second housing shell 20 in the transverse direction 50.
  • the Figures 7 to 10 show side views of the first housing shell 10 and the second housing shell 20 in directions perpendicular to the transverse direction 50.
  • the Figures 7 and 9 show in particular the shape in which the first rib 13 projects beyond the parting plane 3.
  • the Figures 8 and 10 show in particular the form in which the second rib 23 projects beyond the parting plane 3.
  • Fig. 11 shows the housing 1 in the assembled state in a side view in the direction perpendicular to the transverse direction 50.
  • the joint 31 is formed between the first housing shell 10 and the second housing shell 20.
  • Fig. 12 shows a section through the housing 1 along the section plane XII-XII from Fig. 11.
  • Fig. 12 shows the first inner side 18 of the first housing wall 11 of the first housing shell 10.
  • the second rib 23 of the second housing shell 20 projects into the first housing shell 10.
  • the first rib 13 of the first housing shell 10 and the second rib 23 of the second housing shell 20 are arranged directly next to one another.
  • the first rib 13 of the first housing shell 10 and the second rib 23 of the second housing shell 20 run parallel to one another in the sectional plane.
  • Fig. 13 shows a section through the housing 1 along the section plane XIII-XIII from Fig. 12 The section runs through the first rib 13 of the first housing shell 10. The transition between the first rib 13 and the first outer wall 11 is shown in dashed lines.
  • the first rib 13 has a first end 15.
  • the first end 15 faces the second housing shell 20.
  • the first end 15 faces the second inner side 28 of the second housing shell 20.
  • the first end 15 is the end face of the first rib 13.
  • the first end 15 is the edge of the first rib 13.
  • the first end 15 points in the transverse direction 50.
  • the first rib 13 has a first rib height r1a, r1b.
  • the first rib height r1a, r1b is measured from the parting plane 3 to the first end 15 of the first rib 13.
  • the first rib height r1a, r1b is measured in the transverse direction 50.
  • the first rib height r1a, r1b is measured perpendicular to the parting plane 3.
  • the first rib height r1a is measured starting from a first measuring point M1a.
  • the first rib height r1b is measured starting from a first measuring point M1b.
  • the first measuring point M1a, M1b lies in the parting plane 3.
  • the first measuring point M1a, M1b lies in a region of the parting plane 3 that the first rib 13 intersects.
  • the first measuring point M1a is spaced from the first measuring point M1b.
  • the first rib height r1a is greater than the first rib height r1b.
  • the second housing shell 20 has a second shell height h2a, h2b.
  • the second shell height h2a, h2b is measured from the parting plane 3 to the second inner side 28 of the second housing shell 20.
  • the second inner side 28 of the second housing shell 20 corresponds to the inner side of the second outer wall 21 of the second housing shell 20.
  • the second shell height h2a, h2b is measured in the transverse direction 50.
  • the second shell height h2a, h2b is measured perpendicular to the parting plane 3.
  • the second shell height h2a is measured starting from the first measuring point M1a.
  • the second shell height h2b is measured starting from the first measuring point M1b.
  • the second shell height h2a is measured starting from the same first measuring point M1a as the first rib height r1a.
  • the second shell height h2b is measured starting from the same first measuring point M1b as the first rib height r1b.
  • the second shell height h2a is greater than the second shell height h2b.
  • first measuring points from which the first rib height and the second shell height can be determined.
  • the first rib height r1a is at least 60% of the second shell height h2a.
  • the first rib height r1b is at least 60% of the second shell height h2b.
  • the first rib 13 intersects the parting plane 3 over an integrated first length l1.
  • the first rib 13 has first measuring points over at least half of the integrated first length l1, at which the first rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated second shell height.
  • the first rib 13 has at least 90% of the integrated first length 11, first measuring points at which the first rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated second shell height. It can also be provided that the first rib 13 has first measuring points over the entire integrated first length l1, at which the first rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated second shell height.
  • Fig. 15 shows a section through the housing 1 along the section plane XV-XV from Fig. 12
  • the section runs through the second rib 23 of the second housing shell 20.
  • the transition between the second rib 23 and the second outer wall 21 is shown in dashed lines.
  • the second rib 23 has a second end 25.
  • the second end 25 faces the first housing shell 10.
  • the second end 25 faces the first inner side 18 of the first housing shell 10.
  • the second end 25 is the end face of the second rib 23.
  • the second end 25 is the edge of the second rib 23.
  • the second end 25 points in the transverse direction 50.
  • the second rib 23 has a second rib height r2a, r2b.
  • the second rib height r2a, r2b is measured from the parting plane 3 to the second end 25 of the second rib 23.
  • the second rib height r2a, r2b is measured in the transverse direction 50.
  • the second rib height r2a, r2b is measured perpendicular to the parting plane 3.
  • the second rib height r2a is measured starting from a second measuring point M2a.
  • the second rib height r2b is measured starting from a second measuring point M2b.
  • the second measuring point M2a, M2b lies in the parting plane 3.
  • the second measuring point M2a, M2b lies in a region of the parting plane 3 that the second rib 23 intersects.
  • the second measuring point M2a is spaced from the second measuring point M2b.
  • the second rib height r2a is greater than the second rib height r2b.
  • the first shell height h1a is measured starting from the same second measuring point M2a as the first rib height r1a.
  • the second shell height h2b is measured starting from the same second measuring point M2b as the second rib height r2b.
  • the first shell height h1a is greater than the first shell height h1b.
  • the parting plane 3 there are countless second measuring points from which the second rib height and the first shell height can be determined.
  • the second rib height r2a is at least 60% of the first shell height h1a.
  • the second rib height r2b is at least 60% of the first shell height h1b.
  • the second rib 23 intersects the parting plane 3 over an integrated second length l2.
  • the second rib 23 has second measuring points over at least half of the integrated second length l2, at which the second rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated first shell height.
  • the second rib 23 has second measuring points over at least 90% of the integrated second length l2, at which the second rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated first shell height. It can also be provided that the second rib 23 has second measuring points over the entire integrated second length l2, at which the second rib height is at least 30%, in particular at least 45%, preferably at least 60% of the associated first shell height.
  • the first housing shell 10 and the second housing shell 20 only touch in a single plane with respect to the transverse direction 50.
  • the position of the parting plane 3 is clearly defined. If the first housing shell 10 and the second housing shell 20 have contact points in more than one plane in the transverse direction, the position of the parting plane is to be determined such that the parting plane is perpendicular to the demolding direction and that a first surface area of the first outer wall is the same size as a second surface area of the second outer wall.
  • the first surface area is the surface area of that part of an outer side of the first outer wall that projects beyond the parting plane to be determined in the direction of the second outer wall and touches the second outer wall.
  • the second surface area is the surface area of that part of an outer side of the second outer wall that projects beyond the parting plane to be determined in the direction of the first outer wall and touches the first outer wall.
  • Fig. 16 shows a section along the section plane XVI-XVI from Fig. 12 .
  • the cutting plane runs perpendicular to the parting plane 3 through the first rib 13 and through the second rib 23.
  • the cutting plane runs through the Fig. 13 shown first measuring point M1b and by the one in Fig. 15 shown second measuring point M2b.
  • the first housing shell 10 points in the section plane Fig. 16 the first shell height h1b.
  • the second housing shell 20 has the second shell height h2b.
  • the sum of the first shell height h1b and the second shell height h2b results in the cavity height h of the housing 1.
  • the cavity height h is measured in the transverse direction 50 between the first inner side 18 of the first housing shell 10 and the second inner side 28 of the second housing shell 20 at the level of the first measuring point M1b.
  • the cavity height h is measured from the first groove base 14 of the first rib 13 to the second inner side 28 of the second housing shell 20.
  • the first rib 13 and the second rib 23 overlap with respect to the transverse direction 50 in an overlap region 32.
  • the overlap region 32 has an overlap length l measured in the transverse direction.
  • the overlap length l corresponds to the sum of the first rib height r1b and the second rib height r2b.
  • the overlap length l is at least 50%, in particular at least 60%, preferably at least 70% of the cavity height h. This applies analogously to the overlap lengths at the first measuring point M1a, the second measuring point M2a, and the second measuring point M2b.
  • the first rib 13 has a first maximum wall thickness mw1.
  • the first maximum wall thickness mw1 is measured in a wall thickness direction 49.
  • the wall thickness direction 49 extends perpendicular to the transverse direction 50.
  • the wall thickness direction 49 extends parallel to the parting plane 3.
  • the second rib 23 is arranged at a rib spacing a from the first rib 13.
  • the rib spacing a is measured in the wall thickness direction 49.
  • the rib spacing a is constant with respect to the transverse direction 50.
  • the rib spacing a is constant regardless of the distance from the parting plane 3.
  • the rib spacing is less than the first maximum wall thickness mw1, in particular less than two-thirds of the first maximum wall thickness mw1.
  • the second rib 23 has a second maximum wall thickness mw2 measured in the wall thickness direction 49.
  • the second maximum wall thickness mw2 is equal to the first maximum wall thickness mw1.
  • the first maximum wall thickness mw1 and the second maximum wall thickness mw2 are different.
  • the rib spacing a is at least 10%, in particular at least 20%, of the first maximum wall thickness mw1. It can also be provided that the rib spacing a is at least 1%, in particular at least 5%, of the first maximum wall thickness mw1.
  • the first rib 13 has a first shell distance s1 from the second housing shell 20.
  • the first shell distance s1 is measured in the transverse direction 50.
  • the first shell distance s1 is measured from the first end 15 of the first rib 13 to the second inner side 28 of the second housing wall 21.
  • the first shell distance s1 is greater than 40% of the first maximum wall thickness mw1 of the first rib 13. This is also shown in Fig. 13 shown.
  • the second rib 23 has a second shell distance s2 from the first housing shell 10 ( Fig. 16 ).
  • the second shell spacing s2 is measured in the transverse direction 50.
  • the second shell spacing s2 is measured from the first end 25 of the second rib 23 to the first inner side 18 of the first housing wall 11.
  • the second shell spacing s2 is greater than 40% of the second maximum wall thickness mw2 of the second rib 23.
  • Fig. 17 shows a section through the housing 1 along the section plane XVII-XVII from Fig. 11 .
  • the first rib 13 projects into the second housing shell 20.
  • These ribs are also in the Figures 3 and 4 shown.
  • Fig. 18 shows a detail of the sectional view from Fig. 17
  • the first rib 13 has at least one region 16 arranged at a first distance d1 from the second outer wall 21, measured perpendicular to the transverse direction 50 and perpendicular to the second outer wall 21.
  • the first distance d1 is measured in the parting plane 3.
  • the first distance d1 is at least five times, in particular at least ten times, the maximum first wall thickness mw1.
  • the second rib 23 has at least one region which is in a direction measured perpendicular to the transverse direction 50 and perpendicular to the first outer wall 11 second distance from the first outer wall 11.
  • the second distance is measured in the parting plane 3.
  • the second distance is at least five times, in particular at least ten times, the maximum second wall thickness mw2.
  • the first housing shell 10 has at least two first ribs 13, 33.
  • the at least two first ribs 13 and 33 i.e. the first rib 13 and the first rib 33, have an intersection point 4 ( Fig. 18 ).
  • the first rib 13 and the first rib 33 are firmly connected to one another.
  • the first rib 13 and the first rib 33 are formed from the same material at the intersection point 4.
  • the at least two first ribs 13 and 33 extend from the intersection point 4, each perpendicular to the transverse direction 50, to the first housing wall 11.
  • the intersection point 4 has a cross-distance k1 from the first housing wall 11, viewed in the transverse direction 50.
  • the cross-distance k1 is measured perpendicular to the transverse direction 50 and perpendicular to the first housing wall 11.
  • the cross-distance is at least five times, in particular at least ten times, the first maximum wall thickness mw1 of the first rib 13.
  • the first rib 33, the first rib 54, and the first rib 55 form a closed structure extending around the transverse direction 50.
  • the structure has three corner points where the first ribs 33, 54, and 55 are connected to each other.
  • the structure encloses a cavity 34.
  • the first rib 13 has a first recess 17.
  • the first recess 17 extends in the transverse direction 50.
  • the recess 17 serves to accommodate a second reinforcing rib 27 of the second housing shell 20.
  • the reinforcing rib 27 is in the Figures 18 and 4 shown.
  • the second reinforcing rib 27 of the second housing shell 20 projects into the first recess 17 of the first rib 13 of the first housing shell 10, so that the second reinforcing rib 27 surrounds the recess 17 of the first rib 13 in a direction perpendicular to the transverse direction 50.
  • the second reinforcing rib 27 is arranged exclusively on one side of the parting plane 3.
  • the second reinforcing rib 27 is designed as a second rib and protrudes beyond the parting plane 3. It can also be provided that the reinforcing rib 27 has a recess for receiving the first rib 13. The first rib 13 and the reinforcing rib 27 are then inserted into one another in an intersecting manner.
  • first ribs of the first housing shell 10 and the second ribs of the second housing shell 20 are marked with dashed lines. All first ribs and all second ribs have a total length G measured in the parting plane 3. During the summation, the first ribs and the second ribs are intersected by the parting plane 3 and the length of the first ribs and the second ribs in the parting plane 3 is measured and summed. The length of a rib is always measured in the direction of greatest extension from a point on the rib. If a rib has a curved or angled course in the parting plane 3, the length of the corresponding rib is determined by a path integral.
  • All first ribs and all second ribs are bounded by an imaginary enveloping polygon P. Through the polygon P, all immediately adjacent endpoints of the first and second ribs in the parting plane 3 are connected by straight lines.
  • the polygon P encloses a polygon area P.
  • the quotient of total length G and polygon area P is at least 0.2 mm -1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Casings For Electric Apparatus (AREA)
  • Measuring Volume Flow (AREA)

Claims (15)

  1. Boîtier pour un outil de travail (2) guidé à la main, comprenant deux coques de boîtier (10, 20), à savoir une première coque de boîtier (10) et une deuxième coque de boîtier (20), la première coque de boîtier (10) présentant une première paroi extérieure (11), la deuxième coque de boîtier (20) présentant une deuxième paroi extérieure (21), la première paroi extérieure (11) et la deuxième paroi extérieure (21) étant au moins partiellement appliquées l'une contre l'autre le long d'un plan de séparation (3), la première coque de boîtier (10) présentant au moins une première nervure (13, 33, 53, 54, 55), la première nervure (13, 33, 53, 54, 55) s'étendant dans une direction transversale (50) transversalement, notamment perpendiculairement au plan de séparation (3), la première nervure (13, 33, 53, 54, 55) faisant saillie au-delà du plan de séparation (3) dans la deuxième coque de boîtier (20), la première nervure (13, 33, 53, 54, 55) présentant une première hauteur de nervure (r1a, r1b) mesurée dans la direction transversale (50) en partant d'un premier point de mesure (M1a, M1b) dans le plan de séparation (3) jusqu'à une première extrémité (15) de la première nervure (13, 33, 53, 54, 55) tournée vers la deuxième coque de boîtier (20), la deuxième coque de boîtier (20) présentant une deuxième hauteur de coque (h2a, h2b) mesurée dans la direction transversale (50) en partant du même premier point de mesure (M1a, M1b) dans le plan de séparation (3) jusqu'à un deuxième côté intérieur (28) de la deuxième coque de boîtier (20) situé en face de la première coque de boîtier (10), et il existant au moins un premier point de mesure (M1a, M1b) dans le plan de séparation (3), au niveau duquel la première hauteur de nervure (r1a, r1b) représente au moins 30 %, notamment au moins 45 %, de préférence au moins 60 % de la deuxième hauteur de coque (h2a, h2b), caractérisé en ce que la deuxième coque de boîtier (20) présente une deuxième nervure (23, 43, 63), en ce que la deuxième nervure (23, 43, 63) s'étend à partir de la deuxième paroi extérieure (21) de la deuxième coque de boîtier (20) dans la direction transversale (50) vers la première coque de boîtier (10), en ce que la deuxième nervure (23, 43, 63) fait saillie au-delà du plan de séparation (3), et en ce que la deuxième nervure (23, 43, 63) fait saillie dans la première coque de boîtier (10).
  2. Boîtier selon la revendication 1,
    caractérisé en ce que la deuxième nervure (23, 43, 63) présente une deuxième hauteur de nervure (r2a, r2b) mesurée dans la direction transversale (50) en partant d'un deuxième point de mesure (M2a, M2b) dans le plan de séparation (3) jusqu'à une deuxième extrémité (25) de la deuxième nervure (23, 43, 63) tournée vers la première coque de boîtier (10), en ce que la première coque de boîtier (10) présente une première hauteur de coque (h1a, h1b) mesurée dans la direction transversale (50) en partant du même deuxième point de mesure (M2a, M2b) du plan de séparation (3) jusqu'à un premier côté intérieur (18) de la première coque de boîtier (10) situé en face de la deuxième coque de boîtier (20), et en ce qu'il existe au moins un deuxième point de mesure (M2a, M2b) dans le plan de séparation (3), au niveau duquel la deuxième hauteur de nervure (r2a, r2b) représente au moins 30 %, notamment au moins 45 %, de préférence au moins 60 % de la première hauteur de coque (h1).
  3. Boîtier selon la revendication 2,
    caractérisé en ce que la première nervure (13, 33, 53, 54, 55) présente une première épaisseur de paroi maximale (mw1) mesurée perpendiculairement à la direction transversale (50) dans une direction d'épaisseur de paroi (49), et en ce qu'une distance de nervures (a) mesurée dans la direction d'épaisseur de paroi (49) entre la première nervure (13, 33, 53, 54, 55) et la deuxième nervure (23, 43, 63) est inférieure à la première épaisseur de paroi maximale (mw1), notamment inférieure aux deux tiers de la première épaisseur de paroi maximale (mw1).
  4. Boîtier selon la revendication 2 ou 3,
    caractérisé en ce que la distance de nervures (a) est d'au moins 1 %, notamment d'au moins 5 % de la première épaisseur de paroi maximale (mw1).
  5. Boîtier selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que la première nervure (13, 33, 53, 54, 55) présente au moins une première zone (16) agencée à une première distance (d1) de la deuxième paroi extérieure (21), mesurée dans le plan de séparation (3) perpendiculairement à la deuxième paroi extérieure (21).
  6. Boîtier selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que la première nervure (13, 33, 53, 54, 55) est fixée à la première paroi extérieure (11).
  7. Boîtier selon la revendication 6,
    caractérisé en ce que la première nervure (13, 33, 53, 54, 55) est réalisée d'un seul matériau avec la première paroi extérieure (11).
  8. Boîtier selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que la première nervure (13, 33, 53, 54, 55) présente une première distance de coque (s1), mesurée dans la direction transversale (50), par rapport à la deuxième coque de boîtier (20), et en ce que la première distance de coque (s1) est supérieure à 40 % de la première épaisseur de paroi maximale (mw1) de la première nervure (13, 33, 53, 54, 55).
  9. Boîtier selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que la première coque de boîtier (10) présente au moins deux premières nervures (13, 33), et en ce que les au moins deux premières nervures (13, 33), vues dans la direction transversale (50), ont un point d'intersection (4).
  10. Boîtier selon la revendication 9,
    caractérisé en ce que le point d'intersection (4), vu dans la direction transversale (50), présente une première distance d'intersection (k1) par rapport à la première paroi de boîtier (11), et en ce que les au moins deux premières nervures (13, 33) s'étendent à partir du point d'intersection (4) jusqu'à la première paroi de boîtier (11).
  11. Boîtier selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que la première coque de boîtier (10) présente plusieurs premières nervures (13, 33, 53, 54, 55), en ce que la deuxième coque de boîtier (20) présente plusieurs deuxièmes nervures (23, 43, 63), en ce que les plusieurs premières nervures (13, 33, 53, 54, 55) et les plusieurs deuxièmes nervures (23, 43, 63) ont une longueur totale (G) mesurée dans le plan de séparation (3), en ce que les plusieurs premières nervures (13, 33, 53, 54, 55) et les plusieurs deuxièmes nervures (23, 43, 63) sont délimitées dans le plan de séparation (3) par un polygone enveloppant imaginaire (P), en ce que le polygone (P) inclut une surface polygonale (A), et en ce que le quotient de la longueur totale (G) et de la surface polygonale (P) est d'au moins 0,2 mm-1.
  12. Boîtier selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce que la première nervure (13) présente un premier évidement (17) dans lequel une deuxième nervure de renforcement (27) de la deuxième coque de boîtier (20) fait saillie dans la direction transversale (50), de telle sorte que la deuxième nervure de renforcement (27) traverse l'évidement (17) de la première nervure (13) dans une direction perpendiculaire à la direction transversale (50).
  13. Boîtier selon l'une quelconque des revendications 1 à 12,
    caractérisé en ce que la première coque de boîtier (10) et la deuxième coque de boîtier (20) sont des pièces moulées par injection.
  14. Boîtier selon l'une quelconque des revendications 1 à 13,
    caractérisé en ce que le boîtier (1) est un boîtier de poignée, et en ce qu'un élément de commande (5) est agencé sur le boîtier de poignée pour commander l'outil de travail (2).
  15. Boîtier selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce que la première nervure (13, 33, 53, 54, 55) coupe le plan de séparation (3) sur une première longueur cumulée (11), et en ce que la première nervure (13, 33, 53, 54, 55) possède, sur au moins la moitié de la première longueur cumulée (11), des premiers points de mesure auxquels la première hauteur de nervure (r1a, r1b) représente au moins 30 %, notamment au moins 45 %, de préférence au moins 60 % de la deuxième hauteur de coque associée (h2a, h2b).
EP20178898.1A 2020-06-09 2020-06-09 Boitier Active EP3922414B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20178898.1A EP3922414B1 (fr) 2020-06-09 2020-06-09 Boitier
US17/308,326 US11787035B2 (en) 2020-06-09 2021-05-05 Housing
CN202110495406.1A CN113770980B (zh) 2020-06-09 2021-05-07 壳体

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EP3922414B1 (fr) * 2020-06-09 2025-08-27 Andreas Stihl AG & Co. KG Boitier
DE102022134555A1 (de) * 2022-12-22 2024-06-27 Andreas Stihl Ag & Co. Kg Handgeführtes Arbeitsgerät

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EP3922414A1 (fr) 2021-12-15
US20210379752A1 (en) 2021-12-09
CN113770980A (zh) 2021-12-10
CN113770980B (zh) 2025-04-04

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