Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
  • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
  • B23K20/106—Features related to sonotrodes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
  • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
  • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
  • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
  • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
  • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
  • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
  • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
  • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
  • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
  • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
  • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
  • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
  • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
  • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
  • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
  • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
  • F04B1/0404—Details or component parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
  • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
  • F04B1/0404—Details or component parts
  • F04B1/0421—Cylinders
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
  • F15B1/02—Installations or systems with accumulators
  • F15B1/04—Accumulators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/20—Accumulator cushioning means
  • F15B2201/21—Accumulator cushioning means using springs
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/30—Accumulator separating means
  • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/40—Constructional details of accumulators not otherwise provided for
  • F15B2201/405—Housings
  • F15B2201/4056—Housings characterised by the attachment of housing components
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/60—Assembling or methods for making accumulators
  • F15B2201/605—Assembling or methods for making housings therefor

Definitions

• Hvdraulikvortechnische in particular low-pressure accumulator with a closure element
• the invention relates to a hydraulic device, in particular a low-pressure accumulator, with a closure element, and a method for producing a hydraulic device, in which a connection of a closure element to a housing of the hydraulic device takes place.
• Known hydraulic devices have cavities in which hydraulic fluids are present during operation of the hydraulic device and which must be sealed against the environment of the hydraulic device.
• Such cavities often serve as pressure accumulator, in particular low pressure accumulator on a hydraulic device.
• piston pumps as a hydraulic device to a piston which is guided axially displaceably in a bushing, which is inserted into a cylinder bore of a pump housing.
• a closure element in the form of a cover is arranged on the bush of the cylinder bore and closes it in a pressure-tight manner.
• the closure element is often also part of other components of a hydraulic device, such as in particular a memory, a valve, a hydraulic connection and / or a motor.
• the closure element is inserted by known connection measures in the housing of the hydraulic device.
• the closure element is caulked or arranged via an additional element, such as a snap ring, or with connecting means such as screws in the housing.
• additional element such as a snap ring
• connecting means such as screws in the housing.
• attach the closure element by means of the so-called “self-clinch” connection method.
• connection measures are relatively expensive and possibly difficult to seal over the life of the hydraulic device away.
• there is a certain space requirement for these connection measures which increases the overall dimensions of the hydraulic device.
• a closure element is connected to the housing of a hydraulic device, in particular a low-pressure accumulator used for a vehicle brake system of a motor vehicle on a piston pump, by torsional welding or torsional friction welding by means of a sonotrode.
• a fluid-tight, in particular gas-tight material connection of the closure element with the housing is achieved.
• the sonotrode penetrates plastically into the closure element and places it in a high-frequency oscillation (in particular ultrasound).
• the tightness of the connection is ensured over the entire service life of the hydraulic device. Due to the non-detachable connection, for example, the problem of loosening a screw connection during operation due to shedding loads can no longer occur. Furthermore, results from the process of the invention, a space savings, for example, O-rings for sealing, and support rings and thread, are no longer needed or no material for reshaping caulking must be kept. As a result, the manufacturing costs can be reduced in the manufacturing method according to the invention, since components and material can be saved, and since lower demands can be placed on the tolerances of the components used, in particular the closure element. Overall, material can be saved on the housing, because the axial forces during torsional welding (about 1 kN to 10 kN) are lower than in particular during caulking.
• an interface is provided in the housing, in which a cylindrical bore is introduced by means of machining, which then in particular, can serve as a piston running surface for a storage piston.
• This bore has a first chamfer, ie a beveled surface at its edge for transition to a support shoulder, which merges into a second chamfer.
• This second bevel in turn merges into a transition radius of the outer surface of the housing.
• the depth of the axial bearing surface is preferably between 0.5 mm and 1, 0 mm high, in particular 0.7 mm.
• the first phase has an angle of approximately 30 ° with respect to the longitudinal axis of the closed bore, the second phase an angle of approximately 40 ° to 45 °.
• the centering of the closure element to the housing via the second chamfer in cooperation with in particular the outer edge of the closure element.
• the second chamfer therefore also serves as an assembly aid when the closure element is placed on the interface on the housing for connecting the closure element to the housing.
• the second chamfer need not extend over the entire circumference of the closure element, but may be recessed in areas, in particular two opposite side regions of a cuboid housing with its opposite side surfaces. It is sufficient if the closure element is centered in the remaining area of its contact surface on the housing. The outer edge of the closure element can nevertheless be centered over the region of the thickness or slice thickness of the housing. It is only important that the closure element comes into contact with the housing over its entire circumference in order to be torsionally welded over this circumference.
• connection to the housing is produced by said torsional welding by means of a sonotrode of a torional welding system.
• the sonotrode is designed such that forms a positive and positive connection between the geometry of the sonotrode and the closure element by axial pressing on the closure element.
• the surface of the closure element thus becomes the negative mold of the stamp, since the material of the closure element is plastically deformed by the use of the sonotrode.
• the sonotrode is configured particularly advantageously corrugated, so that the closure element has a positive and a force fit with the housing by plastic forming.
• connection of the material of the closure element with the base material of the housing then takes place in that the sonotrode is high-frequency (about 10 kHz to 20 kHz) excited and thus in the natural frequency range of the sonotrode a suitable amplitude (about 30 ⁇ to 50 ⁇ ) is generated that leads to such a connection.
• the storage diameter of an associated store is a determining variable for the slice thickness of the housing.
• the thickness of the pane thus far had to hold that material which had been required for hitherto conventional stemming methods for fastening a closure element.
• sufficient material had to be applied to the closure element to meet the static and dynamic pressure requirements of up to 500 bar.
• connection according to the invention only one step, in particular with the aforementioned second bevel and the transition radius, is required at the interface.
• the ratio between disk thickness and effective effective diameter of the closure element and an associated component, in particular a memory, can thus be advantageously reduced.
• the height of the housing can be made smaller because there is no need to stock material for bracing or arranging a snap ring.
• Damper or memory achieved.
• the connection of a closure element to a housing by means of the method according to the invention can be used for a plurality of components, in particular for a piston chamber of a low-pressure accumulator. According to the invention, these are also components of a high-pressure damper chamber.
• the compound according to the invention is preferably gas-tight, in particular helium-tight, formed.
• the strength of the joint preferably corresponds to at least the minimum tensile strength of the two materials of the parts to be joined, which simplifies design based on the requirement.
• the bonding area times the minimum strength of the material gives the load capacity.
• this welding system has a converter with counter-rotating piezoelectric actuators and a vibration converter, which applies the force by means of a booster on the Soothrode and thus on the part to be welded, which is clamped in the lower part of the welding system.
• Fig. 1 is an axial longitudinal section of a pump housing at the step of
• FIG. 2 is a plan view of a pump housing of a piston pump according to the invention
• FIG. 3 is a bottom view of a sonotrode for torsional welding on the pump housing of FIG. 2,
• FIG. 5 shows the section V - V in FIG. 2 in a production step "machining bore", FIG.
• FIG. 6 shows the view according to FIG. 4 in a production step "application of cover”
• FIG. 7 shows the view according to FIG. 4 in a production step "welding cover”
• FIG. 6 shows the view according to FIG. 4 in a production step "application of cover”
• FIG. 7 shows the view according to FIG. 4 in a production step "welding cover”
• FIG. 8 shows the view according to FIG. 5 in the production step "welding cover"
• FIG. 9 shows the detail IX in FIG. 8 and
• FIG. 8 shows the view according to FIG. 5 in the production step "welding cover"
• FIG. 10 shows a variant of the detail X in FIG. 6.
• FIG. 1 illustrates the connection of a closure element 7 in the form of a lid with a pump housing 10 (in the present case as a housing of a designed as a piston pump hydraulic device) by pressing with a ram 22 according to the prior art.
• a pump housing 10 in the present case as a housing of a designed as a piston pump hydraulic device
• the pump housing 10 Visible is the pump housing 10, a cylindrical bore 12 formed therein, a coil spring 14 disposed in the bore 12, and a reservoir piston 16 spring-biased by the coil spring 14.
• the reservoir piston 16 forms a reservoir together with the coil spring 14
• the closure element 7 is held by means of a holding punch 24 on a stepped support 26 which is formed in the interior of the cylindrical bore 12.
• the pressing ram 22 is designed in such a way that by pushing axially on the edge of the cylindrical bore 12, material of the pump housing 10 slides over the outer edge region of the closure element 7. In order to be able to achieve a fluid-tight seal over the entire circumference of the closure element 7, it is important that material is also pushed over the entire circumference of the closure element 7 over its edge region. With regard to its thickness 18, therefore, the pump housing 10 is made so thick or wide that sufficient material for deformation is also available on side surfaces 20 of the pump housing 10.
• the piston pump designed in this way with a pump housing 10 and a closure element 7 on the associated store is designed to convey fluids, in particular for a hydraulic motor vehicle brake system in motor vehicles. It is used, in particular in a slip control, to selectively lower or increase the brake pressure in the wheel brake cylinders.
• the piston pump according to the invention can also be used for example as a high-pressure fuel pump for an internal combustion engine, wherein the fuel enclosed in a delivery chamber is compressed.
• Fig. 2 shows a plan view of a pump housing 10 according to the invention.
• an interface for attaching and attaching a closure element 7 is formed, which is further illustrated in FIGS. 4 and 5 in sections.
• the interface forms a support for the closure element 7, in order subsequently to connect it material-tightly and in particular also tightly to the pump housing 10 with a process of torsional welding.
• FIG. 3 illustrates a bottom view of a corrugated sonotrode 28 of a torsional welding machine (not further shown). This sonotrode 28 generates the material connection between the closure element 7 and pump housing 10 via plastic deformation.
• FIG. 4 illustrates a first step of the method according to the invention for establishing a connection between a closure element 7 and a pump housing 10.
• a cylindrical bore 12 In the pump housing 12 to a cylindrical bore 12 is also formed, which then serves as a piston surface for a reservoir piston 16.
• a first chamfer 2 that is a chamfered surface is formed to a transition to a support shoulder 3, which merges into a second chamfer 4.
• the second chamfer 4 merges into a transition radius 5 on the upper side 21 of the pump housing 10.
• the depth of the support shoulder 3 with respect to the top 21 is about 0.7 mm.
• FIG. 5 shows how this edge configuration is represented on the side surfaces 20 of the pump housing 18.
• this is made so thin or narrow that only the first chamfer 2 and the support shoulder 3 can be found on the entire circumference of the cylindrical bore 12, but not the second chamfer 4.
• the pump housing 10 may therefore be designed with its thickness 8 is particularly thin or narrow.
• FIG. 6 shows, in an axial section, the next step for producing the connection between pump housing 10 and closure element 7.
• the closure element 7 is placed on the support shoulder 3 and thereby centered on the transition radius 5 and the second chamfer 4 with the outer radius 6 of the closure element 7. This centering by means of the transition radius 5 and the second chamfer 4 does not take place at the edge regions to the side surfaces 20, because there is no second chamfer 4 is present.
• FIGS. 7, 8 and 9 show the positive connection by means of torsional welding in a third step, in which the actual welding takes place.
• a compressive force is applied axially to the closure element 7 with the sonotrode 28, and at the same time the sonotrode 28 is excited by high-frequency by means of a torsional welding device (not further shown).
• the material connects to the material on the support shoulder 3 of the pump housing 10 at the lower edge region of the closure element 7.
• the material which melts or melts is illustrated in FIG. 7 and FIG. 9 by reference numeral 30.
• the negative shape of the sonotrode 28 is embossed on the upper side of the closure element 7, because this is designed in particular ribbed on its contact surface to the closure element 7.
• FIG. 10 illustrates a variant of the connection of the closure element 7 on the pump housing 10 and its cylindrical bore 12.
• the chamfer 2 can be seen at the upper edge of the cylindrical bore 12 and a shoulder 32 formed on the closure element 7, which protrudes into the cylindrical bore 12 and thereby covers the chamfer 2 in the axial direction of the bore 12.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Engineering & Computer Science (AREA)
• Fluid Mechanics (AREA)
• Electromagnetism (AREA)
• Transportation (AREA)
• Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
• Details Of Reciprocating Pumps (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)
• Braking Systems And Boosters (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44936242

Family Applications (1)

Country Status (8)

Families Citing this family (1)

Family Cites Families (17)

• 2010
  • 2010-12-17 DE DE102010063318A patent/DE102010063318A1/de active Pending
• 2011
  • 2011-10-18 KR KR1020137015357A patent/KR101897453B1/ko active IP Right Grant
  • 2011-10-18 WO PCT/EP2011/068163 patent/WO2012079807A1/de active Application Filing
  • 2011-10-18 JP JP2013543582A patent/JP2014508248A/ja not_active Withdrawn
  • 2011-10-18 US US13/994,752 patent/US9835151B2/en active Active
  • 2011-10-18 BR BR112013014764A patent/BR112013014764A2/pt not_active IP Right Cessation
  • 2011-10-18 EP EP11773450.9A patent/EP2651622A1/de not_active Withdrawn
  • 2011-10-18 CN CN201180060547.5A patent/CN103260857B/zh active Active

Non-Patent Citations (1)

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