JPH0442778Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The invention comprises at least a sleeve-shaped casing configured as a threaded tube piece, a measured value sensor and the electrical components necessary for forming the signal. The present invention relates to a measurement value generator having a holding conductive plate and a plug socket which can be connected to a housing.

Prior Art In order to keep the damping effect and disturbance level low,
It is advantageous to arrange the signal-forming and signal-amplifying electrical components of the measured value generator spatially in the immediate vicinity of the measured value sensor.

In this case, the measured value generator, in particular the rotary numerical pulse generator intended to be placed in the transmission of a motor vehicle, must not only be able to withstand high vibration loads and significant thermal loads, but also Must be able to respond to difficult conditions. That is, the construction volume is required to be as small as possible, and in particular a narrow construction is required. In this case, the heating of the electrical components themselves limits the assembly density and thus the reduction in space requirements.

Apart from the requirements regarding suitability for difficult assembly conditions, the production of such products also requires that the structure meets the requirements for mass production, i.e. that the components of the measured value generator can be manufactured at low cost. If necessary, it is necessary to be able to assemble it mechanically, to be able to carry out a reliable functional check during the assembly phase, and to be able to replace components at a lower cost.

Some known measuring value generators, which even in the best case meet only part of the above-mentioned conditions, are not only expensive to assemble due to the screw connection, but also suffer from the soldering required during assembly. This makes assembly work difficult. On the other hand, according to West German Utility Model No. 30414.5, a protective sleeve is provided which can be introduced into the casing of the measured value generator and can be fixedly connected to the casing. Measurement value generators have been proposed which have an axially parallel guide groove for pushing in, in which the electrically conductive plate is secured axially by the injection material. In this case, the contact elements assigned to the measured value sensor and to the plug to be connected are brought into direct contact with the conductive plate.

Depending on the configuration described above, the assembly of the measured value generator includes embedding the contact element in the plug-in socket forming the end face of the casing and the soldering operation when connecting the contact element to the corresponding conductor track on the conductive plate. However, the fact that the protective sleeve forms a so-called nut of the casing creates additional space in the casing, even apart from the increased precision of the bearing part of the protective sleeve. It is necessary to fill the casing with injection material. Filling the casing with injection material is known to be extremely expensive. Furthermore, in this case, if the means for connecting the plug to be connected to the measured value generator, especially the bayonet joint, are built directly into the casing as shown in the figure, the manufacturing cost of the casing would be considerable. become. In addition, access to the electrical components and inspection of the circuit is only possible outside the protective sleeve, and the protruding connection elements cannot be bent or unsoldered until they are embedded in the injection material. There is a risk that this will happen. For this reason, the contact elements are fixed in a double-leg configuration with a space between them.

Furthermore, if miniaturization and an increase in the number of contact members are desired, the strength will be reduced and manufacturing accuracy will need to be improved.

Problems to be Solved by the Invention The problems to be solved by the invention are to avoid the risk of contact members coming into contact with the conductive plate during assembly and testing of the conductive plate, improve testability, and reduce manufacturing and assembly costs. The object of the present invention is to provide a measurement value generator of the type mentioned at the outset, in which an impeccable quality is achieved with a reduced

Means for solving the problem The problem is that the contact member on the side of the measured value generator is arranged directly on the conductive plate, and the contact member attached to the plug to be connected is placed in the plug-in socket connected to the casing. The solution is that the recess, the opening assigned to the contact element and the means for holding the electrically conductive plate are constructed.

Effects of the invention The advantages of the invention are that, as is generally desired, for example by simply inserting a conductive plate fully equipped with chip components and a plug-in socket forming a simple injection molded part, Inserts can be constructed that can be handled mechanically and that allow functional testing in the same state as installed, and that electrical components are still visible even well into the assembly stage. Accessibility is provided, yet the contact members are protected and the loads on their soldered connections are relieved. In this case, if the contact elements arranged on the side facing the other components are tinned, as is unavoidable during the mechanical soldering of the conductive plates, the conductive plates can also be arranged radially. As shown in one embodiment of the invention, locking coupling means are provided between the casing and the bayonet socket;
The measured value generator can be functionally completed simply by introducing the insert into the housing. If the requirements are high, depending on the intended use, the insert can be connected to the casing by rolling and bending the casing edges in order to hold the insert. In this case, unlike a locking connection, there is no need for the anti-rotation member to be engaged when the insert and the casing are fitted together, and the anti-rotation effect is effective when bending the edge of the casing. . However, in the case of the present invention, filling with the injection material requires vibration-resistant and gas-tight embedding of the electrical components, and the ribs and the plug molded on the end face of the plug-in socket assigned to the plug. This is necessary when the seal provided by the combined O-ring is deemed insufficient. Additionally, the O-ring offers manufacturing simplifications since a tight connection is achieved between both components, although an exact fit between the casing and the bayonet socket is avoided. It will be done.

The invention will now be explained with reference to the drawings: In FIG. 1, reference numeral 1 designates a housing constructed as a sleeve-like threaded tube piece. A screw thread 2 arranged on the housing 1 serves for fastening the measured value generator, for example, to a motor vehicle transmission housing. In this case, the ring surface 3 serves as a stop surface, while the two hexagons 4 and 5 are provided for engaging an assembly tool, for example a bayonet spanner.

In the case of the selected generator principle, ie an inductive generator, the housing 1 is closed on the measuring head side with a magnetically non-permeable cap 6. On the opposite side, a plug-in part 8, which is assigned to the plug-in socket 7, is provided. As can be seen in FIG. 1, the axial alignment of the plug-in socket 7 is achieved by inwardly deforming the extension 9, which is integrally formed on the casing, by edge bending or rolling.

The plug-in socket 7, the construction of which will be explained below with reference to FIGS. 2, 3 and 4, has on the one hand a plug-in part 10 for a plug (not shown) to be introduced, and on the other hand a suitable Bayonet joint members 11, 12, 1, which are not shown, are formed to be raised by notches on the outer peripheral surface.
It has 3. These bayonet joint members 1
1, 12, 13 serve for connecting the cap nuts assigned to the plug. A rib 14 molded on the end face is assigned to the rubber-elastic plug body and serves as a sealing element when the plug is connected. Furthermore, the casing 1 is attached to the insertion socket 7.
A collar 15 is constructed which is assigned to the seat surface 8 provided on the seat surface 8 and whose outer circumferential surface is provided with a groove 17 serving to fit an O-ring 16. Furthermore, the plug-in socket 7 has an intermediate wall 18 in which slots 19, 20, 21, 22 are provided with contact elements (24 and 25 in FIG. (shown)). An opening 27 in the intermediate wall 18 separating the plug 10 assigned to the plug and the receiving hole 26 assigned to the conductive plate 23 serves for introducing injection material if required. Two grooves formed in the receiving hole 26 (only one of which is shown in FIG. 3 and designated by the reference numeral 28) serve to hold the conductive plate 23 in the plug-in socket 7. The recesses designated 29 and 30 provide rotation protection after the housing 1 and the plug-in socket 7 have been bent and connected.

In the embodiment of FIG. 5, in which the filled injection material is designated by 31, a locking joint is provided between the housing 1 and the plug-in socket 7, which can be connected by pushing. . For this purpose, the housing 1 is provided with an undercut 32, and the plug-in socket 7 and the housing 1 are designed with suitable landing surfaces (not shown). A protrusion 33 integrally formed on the insertion socket 7 is used as the rotation prevention means. This projection 33 engages in a not shown recess in the edge 34 of the casing 1, which engages onto the plug socket 7.

It should be further noted that the illustrated inductive pulse generator 35 is constructed using a permanent magnet 3 as shown in FIG.
6, a disc 37 forming a magnetic coupling between the permanent magnet 36 and the casing 1, a winding 38, a coil 39, and a coil core 40.
reinforcing material 4 forming a mechanical and electrical connection with 3;
1.

As is already clear from the description of advantages, the assembly process takes place as follows. That is, it is possible to mechanically attach the components to the conductive plate 23, so that the insert is formed by simply inserting it into the plug-in socket 7. After carrying out a functional check, the insert is introduced into the housing 1 and fixed thereto by locking or, if deemed necessary in relation to the field of use, by edge bending. For the given field of use, the measuring value generator is used for injection material 3
It can be filled with 1.

[Brief explanation of the drawing]

The drawings show a plurality of embodiments of the present invention, in which FIG. 1 is a longitudinal sectional view of the first embodiment of the measured value generator of the present invention, FIG. 2 is a plan view of the insertion socket,
Figure 3 is a sectional view taken along line A-B in Figure 2;
The figure shows a side view of the plug socket, and FIG. 5 shows an embodiment in which the casing and the plug socket are locked together. 1... Casing, 2... Screw thread, 3... Ring surface, 4, 5,... Hexagonal part, 7... Plug-in socket, 8... Seat surface, 9... Addition part, 10... Plug-in Part, 11, 12, 13... bayonet joint member,
14...Rib, 15...Tsuba, 16...O-ring,
17... Groove, 18... Intermediate wall, 19, 20, 2
1, 22...slit, 23...conductive plate, 24,
25... Contact member, 26... Receiving hole, 27... Opening, 28... Groove, 29, 30... Recess, 31...
Injection material, 32... Undercut portion, 33... Protrusion, 34... Edge, 35... Pulse generator, 36...
...Permanent magnet, 37... Disc, 38... Winding body, 39
... Coil, 40 ... Coil core, 41 ... Reinforcement material.

Claims (1)

[Claims for Utility Model Registration] 1. A sleeve-shaped casing configured as a threaded tube piece, a measurement value sensor, a conductive plate holding at least the electrical components necessary for forming a signal, and the casing. In the measurement value generator having a plug socket which can be connected to the measurement value generator, the contact members 24, 25... on the measurement value generator side
is arranged directly on the conductive plate 23 and in the plug socket 7 connected to the housing 1,
Insert part 1 assigned to the plug to be connected
0 and the opening 1 assigned to the contact members 24, 25
9, 20, 21, 22 and means 26, 28 for holding the conductive plate 23,
Measured value generator. 2. An intermediate wall 18 is integrally molded into the plug socket 7 and separates the plug part 10 assigned to the plug from the receiving opening 26 assigned to the conductive plate 23 and which contacts the contact element 24. ,2
5. Openings 19, 20, 21, 2 assigned to...
2 is formed in the intermediate wall 18, and the receiving aperture 2
6 is provided with an axis-parallel groove 28 assigned to the conductive plate 23, the utility model registration claim No. 1
Measured value generator as described in section. 3 The insertion socket 7 is configured with connecting members 11, 12, 13 and a collar 15 for a plug that can be connected to a measured value generator, and the casing 1 is provided with a collar 15.
3. The measuring value generator according to claim 2, further comprising a seat surface 8 assigned to the collar 5 and a bendable edge 9 on the collar 15. 4. The measured value generator according to claim 3, wherein the collar 15 has a groove 17 for an O-ring 16. 5 The maximum diameter of the plug socket 7 is the casing 1
The measured value generator according to claim 4, which is the same as or smaller than the spacing between the surfaces of the hexagonal portions formed in the hexagonal portion.