阅读说明：本技术 压力传感器 (Pressure sensor ) 是由 T·哈特 于 2019-01-24 设计创作，主要内容包括：根据本发明的压力传感器可以从压力测量侧安装在模制件、例如注塑成型模具中。由此简化了在注塑成型模具中相应的凹部的形成,并且还简化了压力传感器在注塑成型模具中的安装。压力传感器具有在测量端处垂直于其纵轴所测量到的范围,该范围大于或等于所有其它沿着纵轴垂直于纵轴所测量到的范围。本发明的另一方面涉及一种具有根据本发明的压力传感器的注塑成型模具。本发明还涉及一种用于将根据本发明的压力传感器安装在模制件中、例如注塑成型模具中的方法。(The pressure sensor according to the invention can be installed from the pressure measuring side in a molded part, for example an injection molding tool. This simplifies the formation of a corresponding recess in the injection molding tool and also the installation of the pressure sensor in the injection molding tool. The pressure sensor has a range measured perpendicular to its longitudinal axis at the measuring end that is greater than or equal to all other ranges measured perpendicular to the longitudinal axis along the longitudinal axis. Another aspect of the invention relates to an injection molding die having a pressure sensor according to the invention. The invention also relates to a method for mounting a pressure sensor according to the invention in a molded part, for example in an injection molding tool.)

1. A pressure sensor (1) for mounting in a molding (5), more precisely for mounting in the molding (5) from a pressure measuring side (6) of the molding (5), comprising a measuring end (7) for detecting the pressure to be measured and a longitudinal axis (12), characterized in that, along the longitudinal axis (12), the range (4) measured perpendicular to the longitudinal axis (12) at the measuring end (7) is greater than or equal to all other ranges measured perpendicular to the longitudinal axis (12), and in that the pressure sensor (1) has contacts for contacting contact elements (16).

2. The pressure sensor (1) of the preceding claim, for mounting in an injection mould (25) from inside the injection mould (6).

3. The pressure sensor (1) according to the preceding claim, which is arranged wirelessly in a mold insert (5).

4. Pressure sensor (1) according to one of the preceding claims, having fastening means (2, 18, 19, 20).

5. Pressure sensor (1) according to the preceding claim, characterized in that it has at least partially a thread (2).

6. Pressure sensor (1) according to one of the two preceding claims, configured to establish a snap connection (19) with a corresponding counterpart (21).

7. Pressure sensor (1) according to one of the preceding claims, having a recess (18) for accommodating a fixing element (17).

8. Pressure sensor (1) according to any of the preceding claims, having an integrated temperature sensor.

9. An injection moulding mould (25) having a pressure sensor (1) according to any of the preceding claims.

10. The injection molding mold (25) according to the preceding claim, having a contact element (16).

11. Method for mounting a pressure sensor (1) according to one of claims 1 to 9 in a molding (5), more precisely in the molding (5) from a pressure measurement side (6) of the molding (5), comprising the steps of:

a) forming a recess (4) in the moulding (5) from the pressure measurement side,

b) inserting the pressure sensor (1) from a pressure measurement side (6) of the molding (5) into a recess (4) in the molding (5), and

c) the pressure sensor (1) is fastened in the molding (5) or in a base plate (15) that can be connected to the molding (5).

12. The method according to the preceding claim, wherein the moulded article (5) is an injection moulding mould (25) or a part thereof and the pressure measurement side (6) of the moulded article (5) is an injection moulding mould inner side.

13. Method according to either of the two preceding claims, wherein the recess (4) is or at least partially comprises a hole.

14. The method according to any of the three preceding claims, wherein the step of fastening has the following options: the fixing element (17) is screwed, snapped in and/or inserted.

Technical Field

The present invention relates to a pressure sensor for mounting in a molded part, for example in an injection molding die. The pressure sensor according to the invention comprises a measuring end, on which the pressure to be measured is recorded, and a longitudinal axis. The invention also relates to an injection molding tool with a pressure sensor according to the invention. The invention further relates to a method for mounting a pressure sensor according to the invention in a molded part, for example an injection molding tool.

Background

Internal pressure sensors are well known and widely used. They are used, for example, to measure the pressure in injection molding molds in order to improve the quality of injection molded parts and thus also the process efficiency during injection molding. Injection molding dies typically use a multi-piece metal injection molding die that is mounted in an injection molding machine. The injection molding mold has a base plate and a molded piece. The molded article is removable and replaceable. During operation of the injection molding tool, the base plate and the molded part are rigidly connected to one another.

Conventional in-mold pressure sensors are installed from the rear, i.e., from the base plate. The fixation of the pressure sensor inside the mould is usually achieved with a threaded joint (Schraubnippel) (for example the applicant's 6457 type of field joint) or with a spacer bushing (for example the applicant's 1720A type). The sensor output signal (which may be, for example, an electrical charge) is fed either into a cable (single-wire or coaxial cable) fastened directly to the sensor, or via a charge-conducting spacer and then via the contact element into a cable which is located only in the base plate, so that no cable is present in the mold insert. In this sensor arrangement, it is advantageously possible to use a small-sized pressure sensor in the region of the front of the sensor (pressure detection region), i.e. on the inside of the die insert, so that pressure measurements can be made even in small die inserts. Furthermore, the sensor front may be designed such that no visible impression of the sensor front is formed in the injection-molded part. Since the fixing of the pressure sensor is effected in the mold insert on its outer side, or only in or through the base plate, the dimension of the nipple, the spacer bush and/or the contact element measured in the radial direction is greater than the dimension of the front of the sensor. Further, if the signal cable is connected to the sensor by a plug or the signal cable is led out directly from the rear of the sensor, the sensor rear (the end of the mold internal pressure sensor opposite to the sensor front) needs to be wider than the sensor front.

For example, patent document CH573592a5 discloses a collector for measuring pressure curves during the injection molding process of plastic substances. The collector enables the process computer to continuously determine the optimum charge for each workpiece, thereby enabling continuous operation even without trained human supervision. In order to understand the pressure distribution on critical parts of the workpiece, the pressure collector is directly installed in the injection and pressing mold. The pressure collector is clamped in the injection and compression mold from the outside thereof by means of mounting bolts, wherein the stop faces of the pressure collector bear against corresponding shoulders in the injection and compression mold, so that the pressure collector is not pressed into the cavity of the injection and compression mold.

A disadvantage of this arrangement is that it is very complicated to form a bore in the moulding for receiving a pressure sensor inside the mould. The fitting accuracy of the hole at the inside of the molded article is the worst because the hole must be made from the outside of the injection molding die due to the dimensional profile of the above-described die internal pressure sensor, and the fitting accuracy of the hole becomes worse as the depth of the hole increases due to the drift of the drill. But here it is the best place to make a reliable pressure measurement, since this is where the measuring end (front of the sensor) is located. If the fitting accuracy in the front region of the sensor is insufficient, the pressure sensor may become stuck in the hole or the injection molding compound may penetrate into the gap between the hole wall and the measuring end. Both of which make it impossible to achieve reliable pressure measurements.

Disclosure of Invention

The object of the present invention is to provide a pressure sensor belonging to the initially mentioned technical field, which is suitable for mounting in a recess (e.g. a hole) in a molded part (e.g. an injection mold), the required recess fitting accuracy being easier to achieve than in the prior art. Furthermore, the object of the present invention is to provide a method with which the installation of the pressure sensor according to the invention in a molded part, in particular an injection molding tool, can be simplified compared to the prior art.

The solution to this object is defined by the features of claim 1.

According to the invention, the pressure sensor is suitable for being mounted in the molding, more precisely from the pressure-measuring side of the molding. The pressure sensor comprises a measuring end, on which the pressure to be measured is recorded, and a longitudinal axis. The pressure sensor is characterized in that the range measured perpendicular to the longitudinal axis (Ausdehnnung) at the measuring end along the longitudinal axis is greater than or equal to all other ranges measured perpendicular to the longitudinal axis, and in that the pressure sensor has a contact for contacting the contact element.

Since the pressure sensor according to the invention can be mounted from the pressure-measuring side of the molding, the recess in the molding for mounting the pressure sensor can be made from the pressure-measuring side. The recess thus made can be more accurate than if it had to be made from the side of the moulding opposite the pressure measurement side. Or in other words, for the required fitting accuracy of the recess, it is easier to make the recess from the pressure measurement side than from the side opposite to the pressure measurement side.

A molded part is understood to be an object that can partially surround a mold cavity in which the pressure is to be measured. The molded part may be an injection molding die or a part of an injection molding die, such as a die insert. Other examples of molded articles include: a motor cylinder block with one or more cylinder bores in which pressure should be measured; or it may be a rim which, together with the tyre, embraces a cavity in which the pressure is to be measured. In principle, the tire can also be a molded part. The molded part can advantageously be made of metal, metal compounds and/or materials with comparable heat resistance and strength, such as composite materials.

The pressure-measuring side of the molding is the side of the molding on which the pressure should be measured during operation. This side is also referred to as the medial side.

The side of the molding opposite the pressure measurement side, which is not subjected to the pressure to be measured during operation, is referred to as the outer side in the following.

The measuring end of the pressure sensor is the end which is subjected to the pressure to be measured during operation. There is also the sensor front surface. The end of the pressure sensor opposite the measuring end is referred to below as the contact end, since the contacts for contacting the contact elements or the cables for leading out and/or further transmitting the sensor measuring signals can usually be connected there.

The recess in the molding made from the pressure-measuring side of the molding has a cross section which remains constant or tapers with increasing depth, thereby enabling the pressure sensor according to the invention to be accommodated in this recess with a fitting accuracy. Accordingly, the pressure sensor according to the invention has a constant or tapering cross section in the longitudinal direction from the measuring end, i.e. it can have an at least partially constant, stepped and/or continuously (or otherwise) tapering cross section along the longitudinal axis, for example in the direction toward the contact end.

In an advantageous embodiment, the pressure sensor according to the invention is adapted to be mounted in an injection mould from inside the injection mould.

As mentioned and previously, injection moulding represents a special case of moulded parts, other designs of moulded parts are also possible.

An advantage of the pressure sensor according to this embodiment of the invention is that the pressure sensor can be removed more quickly in the event of a malfunction or damage, since it is not necessary to completely remove the injection molding tool or its tool insert.

In a further preferred embodiment, the pressure sensor according to the invention has a circular cross section at least in regions.

Such a sensor is particularly easy to manufacture and is also particularly easy to introduce into the respective hole, for example by a rotational movement.

Alternatively and/or additionally, the cross section may also have other shapes, for example angular.

In a special embodiment, the pressure sensor according to the invention has a fastening device.

The pressure sensor can thus be fastened in a molded part, in particular in an injection molding tool. In a multi-part injection molding tool, the pressure sensor can be fastened in the mold insert or in the base plate by means of the fastening device.

By means of the fastening device, for example, a force can be introduced into the pressure sensor, which presses the pressure sensor into a recess in the molding, i.e. from the pressure measurement side of the molding to the outside of the molding. The direction of the force is the same as the direction of the force generated by the pressure to be measured and exerted on the pressure sensor. The pressure sensor can thus be designed such that the force from the fastening means is directed in the same direction as the force generated by the pressure to be measured. The advantages of this are: the fastening device only needs to be designed for small forces, such as the weight of the pressure sensor, so that the pressure sensor does not fall out of the recess. During operation, the pressure sensor is additionally pressed into the recess by the force generated by the pressure to be measured and cannot fall out. This is a clear difference compared to conventional pressure sensors which are fastened in the molding from the outside, so that the fastening means are subjected to forces directed from the outside of the molding to the inside, i.e. to the pressure measurement side, which are directed opposite to the direction of the force generated by the pressure to be measured. Therefore, the fastening device of the conventional sensor must withstand not only the weight of the pressure sensor but also the force generated by the pressure to be measured. The pressure to be measured can reach several thousand bar, which results in considerable forces and thus in expensive fastening means in conventional pressure sensors.

In a particular embodiment, the fastening means may be removable towards the measuring end. The advantages of this are: the removable fastening means can be removed before the pressure sensor is mounted and thus the pressure sensor core, i.e. the pressure sensor without the removable fastening means, can have a smaller range measured perpendicular to the longitudinal axis at the measuring end than the other ranges measured perpendicular to the longitudinal axis not at the measuring end. Inserting the pressure sensor core into the recess of the moulding is simpler than inserting the entire pressure sensor. The removable fastening means can then be introduced into the interspace between the inner wall of the recess and the pressure sensor core. For example, the removable fastening means may be pressed into the recess such that the pressure sensor formed thereby is securely placed in the recess. The removable fastening device can, for example, exert a force on a shoulder of the pressure sensor core, so that the pressure sensor is pressed into a recess in the molding. In this case, the removable fastening means may be, for example, a sleeve.

Alternatively and/or in addition to the fastening device, the sensor can also be pressed into the recess, for example.

In another particular embodiment, the pressure sensor according to the invention is at least partially threaded.

Thus, for example, the pressure sensor can be screwed into the molding from the pressure measurement side or can be screwed from the outside of the molding by means of a screw, a hollow screw, a nut or a joint.

The threads may be internal or external. The external thread can preferably be arranged in the central region of the pressure sensor and/or in the region of the contact end. Alternatively and/or additionally, however, an internal thread can also be arranged in the region of the contact end.

In addition to the thread, the pressure sensor can also have a form-fitting element in the region of the measuring end or in the region of the contact end, which is suitable for screwing in or unscrewing the pressure sensor for engaging the die. The form-fitting element can be configured to engage a recess of a screwdriver. The form-fitting element can also be designed as a polygon which can be engaged by a hexagon socket or a screw wrench.

If the form-fitting element is arranged at the measuring end, for example on the front surface of the sensor, it can be covered with a cover so that no indentations are produced on the injection mold when the pressure sensor is installed in the injection mold. The cover can be designed as a lid which can be placed securely in a recess of the injection moulding tool, for example by means of a clamping mechanism, so that it does not fall out during normal operation. If the sensor needs to be removed or for inspection purposes, the lid or cover can be broken in an emergency and replaced with a new lid at a later time. The cover is pressure transmitting.

In the case of a fastening device which is removable towards the measuring end, the fastening device can have an external thread so that it can be screwed into a corresponding internal thread in the molding. In this case, the removable fastening means may be, for example, a threaded joint.

Alternatively and/or in addition to the thread, the pressure sensor can also be fastened or fixed to the molding by other fastening means, for example snap-in locking or as described below.

In another embodiment, the pressure sensor according to the invention is designed to form a snap connection with a corresponding counterpart.

The counterpart may be arranged in the molding, so that the pressure sensor can be fastened to the molding by means of a snap connection.

The pressure sensor may have, for example, a bulge and/or a projection in the radial direction, wherein the bulge and/or the projection is designed to form a snap connection with the molded part, in particular with an injection molding tool. The pressure sensor may also have a spring and/or a resilient element to form a snap connection with the molding. In the case of a multi-part injection molding mold, the pressure sensor can enter a snap connection in the mold insert or together with the base plate.

In a further preferred embodiment, the pressure sensor according to the invention has a recess for receiving the fastening element.

The pressure sensor can thereby also be fastened and/or fixed in a molded part, in particular in an injection molding tool. In the case of a multi-part injection molding tool, the pressure sensor can be fastened and/or fixed in the mold insert or in the base plate by means of a fixing element.

The fixing element may be, for example, a fixing pin, a cotter pin or a fixing ring.

In a preferred embodiment, the pressure sensor according to the invention has a moldable marking on the front surface of the sensor.

Thus, the marking may be intentionally applied, for example, on the injection molding die.

The moldable indicia may comprise, for example, alphanumeric symbols, particularly a date, a serial number, and/or a lot number. The moldable indicia may be mirror-inverted to clearly show the date, serial number, and/or lot number on the injection molding mold. The moldable indicia may also include grooves or arrows. For more details, please refer to the applicant's european patent application No. 17196594.0 with a date of 2017, 10, 16.

The moldable marking can in particular be combined with a form-fitting element on the front surface of the sensor, which is suitable for screwing in the pressure sensor for engaging the mold.

Instead of the moldable marking, the sensor front surface may be flat or have a shape that leaves no impressions, for example, on the injection molded part.

In a further preferred embodiment, the pressure sensor according to the invention has an integrated temperature sensor.

The pressure and the temperature can thus be measured simultaneously, which is particularly advantageous when the pressure sensor is used in an injection molding tool.

Another aspect of the invention relates to an injection molding die having a pressure sensor according to the invention.

Such an injection molding die can be manufactured, maintained and repaired more easily than an injection molding die having a conventional pressure sensor.

In a preferred embodiment, the injection molding tool according to the invention has a contact element.

This arrangement is very practical when the injection molding mold consists of a base plate and mold inserts. In this case, the pressure sensor may be arranged wirelessly in the mold insert, while the contact element may be arranged in the base plate.

Another aspect of the invention relates to a method for mounting a pressure sensor according to the invention in a molding, more precisely in a molding from the pressure-measuring side of the molding. The method comprises the following steps:

a) a recess is formed in the molded article from the pressure measurement side,

b) inserting a pressure sensor into a recess in the molded article from a pressure measurement side of the molded article, and

c) the pressure sensor is fastened in the molding or in a base plate that can be connected to the molding.

The advantage of this method is that the recess in the molding can be made simpler and more precisely fitted, and the pressure sensor can be mounted more simply and more quickly, in particular when subsequently mounted (retrofitted) in the molding.

The recess may be created by: i.e. to taper it with increasing depth in the moulded article. This tapering in the recess can serve as a stop for the pressure sensor, so that the pressure sensor cannot be pushed completely through or over the recess in the molding, so that the pressure sensor is not exposed again on the outside of the molding.

The fastening of the pressure sensor in the molding can be carried out in a known manner.

In a preferred embodiment of the method according to the invention, the molded part is an injection molding die or a part thereof, and the pressure measuring side of the molded part is the injection molding die inside.

This has the advantage that the injection mold does not have to be completely removed from the injection molding machine in order to install the pressure sensor.

In another preferred embodiment of the method according to the invention, the recess is or at least partially comprises a hole.

The holes can be produced particularly simply. In addition, a circular pressure sensor can be inserted particularly easily into a circular recess by a rotary movement and the risk of tilting is much lower than in an angular recess.

However, for example for realizing a bayonet fastening, a recess which is only partially formed by a hole and additionally has another geometry (for example one or more longitudinal slits) is also advantageous.

The holes may have different diameters. The holes in the molding can be formed in this case by: that is, the diameter of the bore decreases with increasing depth, e.g., stepwise. However, it is also conceivable for the bore to be at least partially conical. The aforementioned shaping of the bore enables the pressure sensor to be supported on the molding. The pressure sensor may also have at least partially a conical shape.

In another preferred embodiment of the method according to the invention, the step of fastening has the following options: screwing, snapping and/or inserting the fixing element.

The pressure sensor can thereby be fastened and/or fixed in the molding particularly simply.

However, it is also possible to press or clamp the pressure sensor in a recess of the molding, for example if a tensioning device is provided in the pressure sensor or in the molding.

Drawings

The drawings used to illustrate the embodiments show:

fig. 1 shows an embodiment of a pressure sensor, which has a thread and a form-fitting element in the region of the measuring end of the pressure sensor,

fig. 2 shows an embodiment of the pressure sensor, which has a thread and a form-fitting element in the region of the contact end of the pressure sensor,

figure 3 is an embodiment of a pressure sensor with a fixing element,

figure 4 is an embodiment of a pressure sensor with a snap-fit connection,

figure 5 is an embodiment of a pressure sensor with a spacer bushing,

figure 6 is an exploded view of the embodiment according to figure 1,

figure 7 is an exploded view of the embodiment according to figure 2,

figure 8 is an exploded view of the embodiment according to figure 3,

figure 9 is an exploded view of the embodiment according to figure 4,

figure 10 is an exploded view of the embodiment according to figure 5,

fig. 11 is a schematic diagram of the composition of a pressure sensor connected to an analysis element.

In principle, identical components have the same reference numerals in the figures.

Detailed Description

Fig. 1 shows an embodiment of a pressure sensor 1 with a thread 2 and a form-fitting element 3. The pressure sensor 1 is dimensioned such that it can be mounted virtually without play in the recess 4 of the molding 5. The measuring end 7 and the sensor front surface 8 of the pressure sensor 1 are also located on the pressure measuring side 6 of the molding 5. In this embodiment, the form-fitting element 3 is located at the measuring end 7, more precisely on the sensor front surface 8. The form-fitting element 3 is slot-shaped, so that, for example, a screwdriver can be inserted into the form-fitting element 3 in order to screw the pressure sensor 1 into the recess 4. After screwing in the pressure sensor 1, a cover 9 can be applied on the sensor front surface 8, so that the pressure measurement side 6 is also smooth and flat in the region of the recess 4 or the pressure sensor 1. The pressure pickup 10 is advantageously located in the region of the pressure measuring end 7 of the pressure sensor 1. The moulding thread 11 is located in the recess 4 so that the pressure sensor can be screwed into the recess 4. In this exemplary embodiment, the recess 4 is a stepped bore, the diameter of which in the region of the measuring end 7 and/or in the region of the pressure sensor 10 is greater than the diameter in the region of the molding thread 11. The holes are arranged symmetrically around the longitudinal axis 12 of the pressure sensor 1. The pressure sensor 1 is closed flush with the outer side 14 of the molding 5 at its contact end. On the outer side 14 of the molding element 5, a base plate 15 can be arranged, in which the contact element 16 is located. The contact element 16 contacts the pressure sensor 1 and allows the sensor signal to be transmitted from the pressure sensor 1 in the cable 26. The cable 26 transmits the sensor signal into an analysis element 27, as shown in fig. 11. The evaluation element 27 detects the pressure at the measuring end 7 of the pressure sensor 1 by means of the sensor signal at a sampling rate of typically between 10kHz and 30 kHz. Thus, for example, when a medium is filled into the injection mold 25, the pressure at the measuring end 7 of the pressure sensor 1 can be tracked as a smooth curve by the evaluation element 27. The evaluation element 27 is used to evaluate or optimize or monitor or record or regulate the process carried out using the molding 5. The molding 5 and the base plate 15 constitute an injection molding die 25.

Fig. 2 shows an embodiment of the pressure sensor 1 with a thread 2 and a further form-fitting element 30, which further form-fitting element 30 is arranged in the region of the contact end 13 of the pressure sensor 1, in contrast to the previous embodiments. In this embodiment, the further form-fitting element 30 is, for example, hexagonal. The further form-fitting element 30, i.e. the hexagon, is tapered compared to the portion of the pressure sensor 1 provided with the thread 2. Thus, in case the recesses 4 (in this case holes) are of the same size, a clearance for inserting e.g. a wrench will be left for screwing the pressure sensor 1 into the recess 4. The other features, in particular the arrangement of the thread 2 and the moulding thread 11, are the same as in the previous embodiment.

Fig. 3 shows an embodiment of the pressure sensor 1 with a fastening element 17. The fastening element 17 in the form of a snap ring is shown in top plan view in fig. 3. The position of the fastening element 17 in the installed state, i.e. in a recess 18, which is designed as a fastening recess in the pressure sensor 1, is shown in dashed lines in the bottom of fig. 3. In this exemplary embodiment, the pressure sensor 1 projects into the base plate 15 as far as its contact end 13. Above which in turn the contact element 16 is situated, which is in signal contact with the pressure sensor 1. The contact elements 16 are not, however, flush with the underside of the base plate 15. The moulding 5 is removable and replaceable. During operation of the injection molding tool, the base plate 15 and the molded part 5 are rigidly connected to one another. In the case of a removed molding 5, the fixing element 17 can be introduced into the recess 18, i.e. the fixing groove, of the pressure sensor 1 and thus fasten and/or fix the pressure sensor 1 in the molding 5. In this exemplary embodiment, the pressure sensor 1 is located virtually without play in the recess 4 over the entire thickness of the molding 5. Due to the stepped, upwardly tapering shape of the recess 4 and the corresponding stepped, upwardly tapering shape of the pressure sensor 1, the pressure sensor 1 is securely seated in the molding 5 with the fixing element 17 installed.

The embodiment shown in fig. 4 differs from the embodiment shown in fig. 3 in that instead of the fixing element 17 and the recess 18, a snap connection 19 is formed by a bulge 20 in the pressure sensor 1 and a spring arm 21 of the contact element 16 engaging into the bulge 20.

For the sake of completeness, a contact terminal 22 is also shown in fig. 4, to which a measuring cable 26 can be connected, as shown in fig. 11.

Fig. 5 shows an embodiment of the pressure sensor 1 with a spacer sleeve 23. The spacer bush 23 transmits the measuring signal from the pressure sensor 1 to the contact element 16. The spacer bush 23 has a crown-shaped snap or clip closure 24.

Fig. 6 shows an exploded view of the embodiment shown in fig. 1, in order to clarify the arrangement of the pressure sensor 1, the molding 5 with the recess 4, the base plate 15 and the contact element 16 in particular with respect to one another. The pressure sensor 1, the molding 5 and the base plate 15 with the contact element 16 are shown spaced apart along the longitudinal axis 12.

Fig. 7 shows an exploded view of the embodiment according to fig. 2, in order to clarify the arrangement of the pressure sensor 1, the molding 5 with the recess 4, the base plate 15 and the contact element 16 in particular with respect to one another. The pressure sensor 1, the molding 5 and the base plate 15 with the contact element 16 are shown spaced apart along the longitudinal axis 12.

Fig. 8 shows an exploded view of the embodiment shown in fig. 3, in order to clarify the arrangement of the pressure sensor 1, the molding 5 with the recess 4, the fastening element 17, the base plate 15, and the contact element 16, in particular, relative to one another. The pressure sensor 1, the molding 5, the fastening element 17 and the base plate 15 with the contact element 16 are shown spaced apart along the longitudinal axis 12.

Fig. 9 shows an exploded view of the embodiment shown in fig. 1, in order to clarify the arrangement of the pressure sensor 1, the molding 5 with the recess 4, the base plate 15 and the contact element 16 in particular with respect to one another. The pressure sensor 1, the molding 5 and the base plate 15 with the contact element 16 are shown spaced apart along the longitudinal axis 12.

Fig. 10 shows an exploded view of the embodiment according to fig. 3, in order to clarify the arrangement of the pressure sensor 1, the spacer sleeve 23, the molding 5 with the recess 4, the base plate 15, the contact element 16, in particular, relative to one another. The pressure sensor 1, the spacer bush, the molding 5 and the base plate 15 with the contact element 16 are shown spaced apart along the longitudinal axis 12.

Fig. 11 shows a schematic representation of the composition of the pressure sensor 1 connected to the evaluation element 27. The pressure sensor 1 is in contact with the contact element 16. The contact element 16 is connected to a cable 26, via which the pressure sensor signal can be transmitted to an evaluation element 27.

In summary, it is emphasized that there are many possible combinations of the previously described features of the pressure sensor according to the invention.

List of reference numerals

1 pressure sensor

2 screw thread

3 form-fitting element

4 concave part

5 moulded part/mould insert

6 pressure measurement side

7 measuring end

8 front surface of sensor

9 covering piece

10 pressure sensor

11 moulding screw thread

12 longitudinal axis

13 contact end

14 outside

15 bottom plate

16 contact element

17 fixing element

18 grooves

19 snap connection

20 bump

21 elastic arm

22 contact joint

23 spacer bushing

24 grip latch

25 injection molding die

26 electric cable

27 analysis element

30 further form-fitting elements.