GB2207509A - Process for assembling a temperature sensor, and temperature sensor so formed - Google Patents

Process for assembling a temperature sensor, and temperature sensor so formed Download PDF

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Publication number
GB2207509A
GB2207509A GB08815899A GB8815899A GB2207509A GB 2207509 A GB2207509 A GB 2207509A GB 08815899 A GB08815899 A GB 08815899A GB 8815899 A GB8815899 A GB 8815899A GB 2207509 A GB2207509 A GB 2207509A
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GB
United Kingdom
Prior art keywords
blades
temperature sensor
sensor
fact
stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08815899A
Other versions
GB8815899D0 (en
GB2207509B (en
Inventor
Claudio Rondonotti
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.)
Veglia Borletti SRL
Original Assignee
Veglia Borletti SRL
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 Veglia Borletti SRL filed Critical Veglia Borletti SRL
Publication of GB8815899D0 publication Critical patent/GB8815899D0/en
Publication of GB2207509A publication Critical patent/GB2207509A/en
Application granted granted Critical
Publication of GB2207509B publication Critical patent/GB2207509B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/72—Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/752—Measuring equipment

Description

Y 2207509 1 PROCESS FOR ASSEMBLING A TEMPERATURE SENSOR, AND TEMPERATURE
SENSOR SO FORMED The present invention relates to a process for assembling a temperature sensor, and to a temperature sensor produced using the said process.
The aim of the present invention is to provide a low-cost robotized process for assembling a temperature sensor; and a temperature sensor of straightforward, low-cost de- sign.
With these aims in view, according to the present invention, there is provided a process for assembling a temperature sensor, characterised by the fact that it comprises: - a first stage wherein plastic material is molded on to two blades joined by a bridge, so as to form a connecting element mechanically connecting two portions of the said blades; - a second stage where in the said bridge is sheared, for electrically insulating the said blades; and the two rheo- phore terminals of a temperature sensor are welded to portions of the said blades; f X 30 - a third stage wherein a plastic body is molded for supporting the said blades and the said sensor.
According to the present invention, there is also provided a temperature sensor produced using the said process and characterised by the fact that it comprises a,plastic body having a center portion from which extends at least a connecting flange; a first lateral portion housing portions of the said two blades and constituting a protecting element for a temperature sensor having its rheophore termi- nals connected to the said blades; and a second lateral portion having at least a cup-shaped portion inside which the ends of the said blades extend for enabling connection to a connector.
The main stages in the process according to the present 15 invention will be described by way of example with reference to the accompanying drawings, in which:
- Fig.s 1 to show the main stages in the temperature sensor assembly process according to the present invention; Fig.s 6 and 7 show front and side views respectively of a further embodiment of the Fig.5 temperature sensor assembled using the same process.
The accompanying drawings show the various stages in the assembly of a temperature sensor 1. two embodiments of which are shown in Fig.s 5 and 6. mainly designed for detecting the temperature of a liquid or gas. The process according to the present invention commences with a pair of parallel, coplanar blades 2 joined by an intermediate bridge 3 (Fig.1). A first end of each blade 2 presents a small inner edge portion 4 turned perpendicularly up- wards. The blades and the bridge are of electrically conductive material and may be formed integrally.
l 1 1 k 30 The process according to the present invention comprises: - a first stage wherein a plastic connecting element 5 is molded for mechanically connecting two portions of blades 2 adjacent to bridge 3 and between bridge 3 and 5 the said portions 4 (Fig.2); - a second stage wherein the said bridge 3 is sheared, for electrically insulating the said blades 2 (Fig.3); - a third stage wherein the two rheophore terminals of a temperature sensor 6 are welded to respective portions of blades 2 left exposed by the said connecting element 5 (Fig-4); - a fourth stage wherein blades 2, connecting element 5 and sensor 6 are incorporated inside a molded plastic body 8 supporting blades 2 and sensor 6 (Fig.s 5 and 6).
Alternatively,, bridge 3 may be sheared after welding the terminals of sensor 6. Molded connecting element 5 presents a first portion 11 incorporating, while at the same time separating, the center portions of blades 2; and a second portion 12 extending along the gap.between blades 2 and cooperating with a small portion of upturned inside edge Portions 49 which provide for separating the rheophores of sensor 6. as shown in Fig.4.
Fig.5 shows a temperature sensor 1 produced using the aforementioned process, and employed for detecting the temperature of a liquid. In this case. plastic body 8 comprises a center portion 15 from which extends a coplanar connecting flange 16; a closed lateral portion 17 housing connecting element 5 and sensor 6; and a cup- shaped lateral portion 18 engaged by a connector (not shown) connected., in use, to the portions of blades 2 extending inside k portion 18. Flange 16 presents a through hole 21 housing a metal bush 22 which, in use, is fitted through with a screw for securing sensor 1 to the wall of the body containing the temperature-controlled liquid. Between flange 16 and portion 18, there is also formed a strengthening rib 23. Along the outer surface of portion 1J, there is formed an annular groove 24 housing an annular seal 25. Both portions 17 and 18 of body 8 present the same longitudinal axis.
Fig.s 6 and 7 show a sensor 1 employed for detecting the temperature of a gas. In this case, plastic body 8 comprises a center portion 31 from which two coplanar connecting flanges 32 extend in opposite directions; and two lateral portions 33 and 34. Portion 33 is substantially flat, and houses the rheophores of sensor 6, which is located inside the space defined by a protective bridge 35 formed in one piece with the free end of portion 33.
The rheophore end of sensor 6 is located in a recess 36 formed on the free end of portion 33, and inside which a layer of protective resin 37 is deposited subsequent to the body 8 molding stage. Portion 34 presents a first portion 38 having the same longitudinal axis as portion 33; and a second portion 41 bent perpendicularly in relation to portion 38. The said portion 38 is solid, whereas portion 41 is cup-shaped and presents, on its outer surface. two teeth 42 for a connector (not shown). the terminals of which extend, in use., inside the said portion 41 in such a manner as to contact the blade 2 portion also extending -inside the said portion 41. Blades 2 are also bent perpendicularly as on portion 34. which bending ope- ration is, of course, performed prior to molding body 8. Each of flanges 32 presents a hole 42 housing a metal bush 43 which, in use, is fitted through with a screw for securing sensor 1 to the wall of'the body containing the 5 temperature-controlled gas.
The advantages of the present invention will be'clear from the foregoing description. Firstly. the above process is performable automatically, by virtue of all the assembly stages involving a single one-piece, easy-tohandle element, thus enabling fast, low-cost production of sensor 1. Furthermore., commencing from the same component, sensors 1 of various designs may be formed for adapting to different temperature-controlled fluids and mounting bodies.
To those skilled in the art it will be clear that changes may he made to both the process and sensor 1 as described and illustrated herein. For example., instead of being bent perpendicularly upwards, portion 4 of each blade 2 may present a -tubular structure having a longitudinal slot forming a' C-section scat in which to house the terminals of sensor 6. This would provide for improved mechanical connection between sensor 6 and blades 2J. thus enabling sensor 6 to be positioned easily in relation to body 8 during molding of the same.
k 1

Claims (1)

1) - A process for assembling a temperature sensor characterised by the fact that it comprises:
- a first stage wherein plastic material i.. molded on.to two blades joined. by a bridge so as to form a connecting element mechanically connecting two por tions of the said blades - a second stage wherein the said bridge is sheared.
for electrically insulating the said blades and the two rheophore terminals of a temperature sensor are welded to portions of the said blades - a third stage wherein a plastic body is molded for supporting the said blades and the said sensor 0 2) - A process as claimed in Claim 1. characterised by the fact that, in the said third stage. the said body is formed with a first portion. 1 designed to pro tect the said sensor; and a cup-shaped second portion inside which the ends of the said blades extend for enabling connection to a connector.
3) - A process as claimed in Claim 2. characterised by the fact that, in the said third stage,, the said first portion of the said body incorporates part of the said blades and the said sensor 4) - A processas claimed in Claim 3. characterised by the fact that it comprises a further stage. following the said third stage. in which an annular seal is insert ed inside an annular groove formed on the outer sur face of the said first portion a 5) - A process as claimed in Claim 2. characterized bY the 9 fact that. in the said third stage. the said first por tion of the said body incorporates part of the said blades and the rheophores of the said sensor and defines,, by means of a bridge with the said first portion the said sensor is housed.
6) - A process as claimed in Claim 5, characterised by the fact that it comprises a fourth stage wherein a layer is denosited inside a recess k formed in one piece 1 a space inside which of protective resin formed on the said first portion and housing the por tion of the said sensor from which the said rheophores exte.nd.
7) - A process as claimed in any one of the foregoing Claims from 2 to 6, characterised by the fact that,, be- tween the said second and third stages, it also comprises an intermediate stage wherein the said blades are bent perpendicularly; the said second portion of the said body bei-ng molded in the said third stage so that it,, too. is L-shaped.
8) - A temperature sensor produced using the process as claimed in anyone of the foregoing Claims from 1 to 7.
and characterised by the fact that it comprises a plastic body having a center portion from which extends at least a connecting flange a first lateral portion housing portions of the said two blades and constituting a protecting element for a temperature sensor having its rheophore terminals connected to the said blades; and a second lateral portion having at least a cup-shaped portion inside which the ends of the said blades extend for enabling connection to a connector. 9) - A temperature sensor as claimed in Claim 8, characterised by the fact that the said first lateral portion incornorates the said sensor 10) - A temperature sensor as claimed in.Clim 9. characterised by the fact that the outer surface of the said first lateral portion for housing an annular seal presents an annular groove 11) - A temperature sensor as claimed in Claim 8, charac terised by the fact that the said first lateral portion is substantially flat, and incorporates part of the said rheophores on the said sensor; the free end of the said first lateral portion presenting a protec tive bridge defining a space housing the said sensor.
1 R 12) - A temperature sensor as claimed in Claim 11, charac terised by the fact that the free end of the said first lateral portion presents a recess. housing the portion of the said sensor from which the said rheophores extend; a layer of protective resin being de- posited inside the said recess 13) - A temperature sensor foregoing Claims from 8 to that the said first and present the same longitudinal 14) - A temperature sensor foregoing Claims from 8 to that the said second lateral portion having the same first lateral portion X 30 as claimed in any one of the 12, characterised by the fact second lateral portions axis.
as claimed in any one of the 12, characterised by the fact nresents a first portion longitudinal axis as the said and a second cup-shaped por- 1 0 k tion having its longitudinal axis.substantially per pendicular to that of the said first portion.; the portion of the said blades extending inside the said second portion of the said second lateral portion also being bent perpendicularly in relation to the 1 remaining portions of the said blades incorporated inside the said first portion and the said first lateral portion 15) - A temperature sensor assembly process as claimed in any one of the foregoing Claims from 1 to 7, and as described and illustrated herein with reference to the accompanying drawings.
16) - A temperature sensor as claimed in any one of the foregoing Claims from 8 to 14, and as described and illustrated herein with reference to the accompanying drawings.
17) - A process according to any of claims 1 to 7 in which the said bridge is sheared after the terminals have been welded to the blades. 16) A process for assembling a temperature sensor Including the steps of moulding plastics material on to two blades joined by a bridge of conducting-material. so as to form a connecting element of electrically insulating material mechanically connecting two portions of the blade, electrically connecting two terminals of a temperature sensor to the two blades respectively, and moulding a plastics body for supporting the blades and the sensor, the bridge being severed after the c6nnecting member has been formed.
19) A temperature sensor formed by the process of any of claims 1 to 7 or claims 17 or 16.
t Published 1988 at The Patent Office, State House, 66P71 Righ. Holborn, London WC1R 4TP. Purther copies may be obtained from The Patent Offtce, Sales Branch, St Mary Gray, Orpington, Rent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent. Con. 1187.
GB8815899A 1987-07-03 1988-07-04 Process for assembling a temperature sensor, and temperature sensor so formed Expired - Fee Related GB2207509B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8767574A IT1211176B (en) 1987-07-03 1987-07-03 ASSEMBLY PROCEDURE OF A TEMPERATURE SENSOR DEVICE AND SENSOR DEVICE SO OBTAINED

Publications (3)

Publication Number Publication Date
GB8815899D0 GB8815899D0 (en) 1988-08-10
GB2207509A true GB2207509A (en) 1989-02-01
GB2207509B GB2207509B (en) 1991-07-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB8815899A Expired - Fee Related GB2207509B (en) 1987-07-03 1988-07-04 Process for assembling a temperature sensor, and temperature sensor so formed

Country Status (8)

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AR (1) AR243019A1 (en)
BE (1) BE1004553A5 (en)
DE (1) DE3822533A1 (en)
ES (1) ES2011486A6 (en)
FR (1) FR2617595B3 (en)
GB (1) GB2207509B (en)
IT (1) IT1211176B (en)
MX (1) MX171332B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508379A1 (en) * 1991-04-12 1992-10-14 MAGNETI MARELLI S.p.A. Fluid-temperature sensor integrated with a connector
FR2723202A1 (en) * 1994-07-28 1996-02-02 Magneti Marelli France Sa Temp. sensor for use in automobiles
EP0780673A1 (en) * 1995-12-22 1997-06-25 General Motors Corporation Insert molded open air thermal probe with a protective basket
EP0794417A1 (en) * 1996-03-06 1997-09-10 Delphi Automotive Systems Deutschland GmbH Medium conducting device with temperature measurement in the medium
WO2000047963A1 (en) * 1999-02-10 2000-08-17 Holzschuh Gmbh + Co. Kg Sensor and method for its production
WO2003046496A1 (en) * 2001-11-19 2003-06-05 Epcos Ag Sensor and sensor assembly
US7641388B2 (en) 2006-04-05 2010-01-05 Denso Corporation Temperature sensor and method of manufacturing the same
CN103017929A (en) * 2012-12-18 2013-04-03 杨晶 High sealed platinum resistor temperature sensor
WO2014188130A1 (en) * 2013-05-22 2014-11-27 Legrand France Electrical apparatus comprising a temperature sensor housed in a support element

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DE4108789C5 (en) * 1991-01-17 2005-06-16 Mannesmann Vdo Ag temperature sensor
DE4329027A1 (en) * 1992-11-03 1995-03-02 Henschel Kunststofftechn Gmbh Temperature measuring device with an extrusion-coated thermistor and a positioning part
DE4329028A1 (en) * 1992-11-03 1995-03-02 Henschel Kunststofftechn Gmbh Method for producing a temperature sensor sheathed with plastic and having a shortened response time
DE4329029A1 (en) * 1992-11-03 1995-03-02 Henschel Kunststofftechn Gmbh Temperature sensor for sampling aeriform or gaseous media
DE4329030A1 (en) * 1992-11-03 1995-03-02 Henschel Kunststofftechn Gmbh Temperature measuring device with an extrusion-coated thermistor and insulating ring gap
DE4237038C2 (en) * 1992-11-03 1995-02-23 Henschel Kunststofftechn Gmbh Temperature sensor
DE4237224C2 (en) * 1992-11-04 1999-11-04 Bosch Gmbh Robert Temperature sensor
DE19534890C2 (en) * 1995-09-20 2003-12-18 Bosch Gmbh Robert temperature sensor
DE19901935C2 (en) * 1998-04-09 2002-06-20 Siemens Ag temperature sensor
DE19910284A1 (en) * 1999-03-09 2000-09-28 Mannesmann Vdo Ag Sensor for combined temperature and level detection
DE19927108C2 (en) * 1999-06-14 2001-06-28 Heraeus Electro Nite Int Process for the production of sensors, in particular temperature sensors
DE10141218B4 (en) * 2001-08-23 2021-04-29 HELLA GmbH & Co. KGaA Process for the production of a connection arrangement as well as connection arrangement produced according to this method
JP4207753B2 (en) * 2003-10-31 2009-01-14 株式会社デンソー Resin housing structure for electrical circuit equipment
DE102014208595A1 (en) * 2014-05-08 2015-11-12 Zf Friedrichshafen Ag Plastic injection-molded arrangement for holding at least one sensor
DE102018121171A1 (en) * 2017-09-11 2019-03-14 Hirschmann Automotive Gmbh Laser-structured surface for an injection-technical connection of the surface
FR3116953B1 (en) * 2020-11-27 2023-06-02 Leoni Wiring Systems France Electronic component protection device

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GB1418959A (en) * 1973-05-15 1975-12-24 Standard Telephones Cables Ltd Electrical circuit unit
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508379A1 (en) * 1991-04-12 1992-10-14 MAGNETI MARELLI S.p.A. Fluid-temperature sensor integrated with a connector
FR2723202A1 (en) * 1994-07-28 1996-02-02 Magneti Marelli France Sa Temp. sensor for use in automobiles
EP0780673A1 (en) * 1995-12-22 1997-06-25 General Motors Corporation Insert molded open air thermal probe with a protective basket
US5764130A (en) * 1995-12-22 1998-06-09 General Motors Corporation Insert molded open air thermal probe with a protective basket
EP0794417A1 (en) * 1996-03-06 1997-09-10 Delphi Automotive Systems Deutschland GmbH Medium conducting device with temperature measurement in the medium
US5829880A (en) * 1996-03-06 1998-11-03 Delphi Automotive Systems Deutschland Gmbh Temperature sensor housing
WO2000047963A1 (en) * 1999-02-10 2000-08-17 Holzschuh Gmbh + Co. Kg Sensor and method for its production
WO2003046496A1 (en) * 2001-11-19 2003-06-05 Epcos Ag Sensor and sensor assembly
US7311014B2 (en) 2001-11-19 2007-12-25 Epcos Ag Sensor and sensor assembly
US7641388B2 (en) 2006-04-05 2010-01-05 Denso Corporation Temperature sensor and method of manufacturing the same
CN103017929A (en) * 2012-12-18 2013-04-03 杨晶 High sealed platinum resistor temperature sensor
WO2014188130A1 (en) * 2013-05-22 2014-11-27 Legrand France Electrical apparatus comprising a temperature sensor housed in a support element
FR3006119A1 (en) * 2013-05-22 2014-11-28 Legrand France ELECTRICAL EQUIPMENT COMPRISING A TEMPERATURE SENSOR LOCATED IN A SUPPORT MEMBER
CN105229869A (en) * 2013-05-22 2016-01-06 勒格朗法国公司 Comprise the electric equipment of the temperature sensor be contained in supporting member
US9634438B2 (en) 2013-05-22 2017-04-25 Legrand France Electrical apparatus comprising a temperature sensor housed in a support element

Also Published As

Publication number Publication date
GB8815899D0 (en) 1988-08-10
AR243019A1 (en) 1993-06-30
ES2011486A6 (en) 1990-01-16
DE3822533A1 (en) 1989-01-19
MX171332B (en) 1993-10-19
FR2617595B3 (en) 1989-10-06
IT8767574A0 (en) 1987-07-03
GB2207509B (en) 1991-07-24
FR2617595A1 (en) 1989-01-06
BE1004553A5 (en) 1992-12-15
IT1211176B (en) 1989-10-06

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000704