CN209992041U - Accommodating device and liquid level sensor - Google Patents
Accommodating device and liquid level sensor Download PDFInfo
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- CN209992041U CN209992041U CN201921002554.XU CN201921002554U CN209992041U CN 209992041 U CN209992041 U CN 209992041U CN 201921002554 U CN201921002554 U CN 201921002554U CN 209992041 U CN209992041 U CN 209992041U
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Abstract
The utility model discloses to pasting the difficulty that current sensor protection subassembly exists, the problem of easy bending provides a holding device and level sensor, include: the device comprises a first shell and a second shell, wherein the first shell is provided with a first sliding chute and a first sliding rail, and the second shell is provided with a second sliding chute and a second sliding rail; the first sliding groove, the first sliding rail, the second sliding groove and the second sliding rail are equal in length, the first sliding rail slides in the second sliding groove, the first sliding rail completely slides into the second sliding groove, and when the first sliding rail completely slides into the second sliding groove, an accommodating cavity is formed between the first shell and the second shell. The slide fastener structure can ensure higher strength of the whole body, and the shell forms the whole body through staggered splicing to protect the sensor circuit; the complexity of the combination is low, rapid splicing can be realized, and the sensor installation efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the sensor encapsulation, concretely relates to holding device and level sensor.
Background
A sensor is a generic term for a device or apparatus that can regularly convert a measured quantity into a usable output signal, and is generally composed of a sensor element and a conversion element. The liquid level measuring sensor is used for measuring the height of liquid and is divided into the following components according to different measuring principles: magnetic levitation, pressure, ultrasonic, radar, etc. Among them, the magnetic levitation type is the most widely used one. The magnetic floating type liquid level sensor adopts the characteristic that a magnetic floater changes position along with the liquid level, and a circuit for inducing a magnetic field is arranged in a unit distance in the height direction, so that the position of the magnetic floater, namely the height of liquid, is measured. Magnetic floating level sensors are currently classified into dry reed type sensors and magnetoresistive type sensors according to the difference of the magnetic field measuring elements. The reed switch tends to be replaced by a magnetoresistive sensor due to the problems of large size and fragile glass material. Magnetoresistive sensors are classified into tunneling magnetoresistance, anisotropic magnetoresistance, and the like according to different principles.
To avoid direct contact with the medium to be measured, the measuring circuit of the sensor is usually housed in a metallic protective sleeve, which needs to be insulated to avoid short-circuiting of the measuring lines. A common magnetoresistive sensor protection component is generally used for sticking a flexible PCB of a magnetoresistive sensor on a metal strip, and the outer surface of the component is packaged by a heat-shrinkable tube, so that the problems of difficult sticking, large deviation of a measuring result caused by easy bending, easy finger scratching of the metal strip and the like exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the difficult, the low scheduling problem of intensity of pasting that prior art exists, the utility model provides a level sensor protection device and level sensor, it has intensity height, and the complexity of combination is low, can realize quick concatenation, has improved characteristics such as efficiency of sensor installation.
According to the utility model discloses a specific embodiment's a holding device, include: the device comprises a first shell and a second shell, wherein the first shell is provided with a first sliding groove and a first sliding rail, and the second shell is provided with a second sliding groove and a second sliding rail; the length of the first sliding groove, the length of the first sliding rail, the length of the second sliding groove and the length of the second sliding rail are equal, the first sliding rail slides in the second sliding groove, the second sliding rail slides in the first sliding groove, the first sliding rail completely slides in the second sliding groove, and when the second sliding rail completely slides in the first sliding groove, a containing cavity is formed between the first shell and the second shell.
Further, the first sliding groove and the second sliding groove are identical in size and shape, and the first sliding rail and the second sliding rail are identical in size and shape.
Furthermore, the first shell and/or the second shell are/is provided with a falling-prevention structure, and the falling-prevention structure is used for preventing the accommodated objects in the accommodating cavity from falling.
Further, the first housing and the second housing are both made of an insulating material.
Further, the temperature that the insulating material can bear is not lower than 125 ℃.
Furthermore, the first sliding groove and the second sliding groove are arc-shaped grooves, the shapes of the first sliding rail and the second sliding groove are matched, and the shapes of the second sliding rail and the first sliding groove are matched.
Further, the first housing and the second housing have the same structure and size; when the at least two accommodating devices are sequentially spliced end to end for use, the length of at least one shell is smaller than the lengths of other shells.
Furthermore, the splicing part of the shell is wrapped and sealed by a waterproof adhesive tape or a heat-shrinkable tube.
Further, the shape of the cross section of the accommodating cavity comprises: circular, quadrilateral, and trilateral.
According to the specific embodiment of the utility model, the liquid level sensor comprises the accommodating device, wherein a flexible circuit board is arranged in an accommodating cavity in the accommodating device; and a magnetic float fitted to the flexible circuit board.
The utility model has the advantages that: the slide fastener structure can ensure higher strength of the whole body, and the insulating shell forms the whole body by staggered splicing to protect the sensor circuit; the complexity of the combination is low, rapid splicing can be realized, and the sensor installation efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a containment apparatus provided in accordance with an exemplary embodiment;
FIG. 2 is a schematic structural view of an upper housing and a lower housing of a containment device provided in accordance with an exemplary embodiment;
FIG. 3 is a schematic illustration of a splice of a containment apparatus provided in accordance with an exemplary embodiment;
fig. 4 is another schematic structural diagram of a receiving device according to an exemplary embodiment.
Reference numerals
1-a first housing; 2-a second housing; 3-a first chute; 4-a first slide rail; 5-a second slide rail; 6-a second chute; 7-a flexible circuit board; 8-an anti-drop structure; 9-containing cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a receiving device, including: the device comprises a first shell 1 and a second shell 2, wherein the first shell 1 is provided with a first sliding chute 3 and a first sliding rail 4, and the second shell 2 is provided with a second sliding chute 6 and a second sliding rail 5; first spout 3, first slide rail 4, second spout 6 and second slide rail 5 length equal, first slide rail 4 slides in second spout 6, second slide rail 5 slides in first spout 3, in first slide rail 4 all slides in second spout 6, when second slide rail 5 all slides in first spout 3, form holding chamber 9 between first casing 1 and the second casing 2, can be used to hold level sensor's flexible circuit board. The shell which is spliced and combined in a staggered mode has certain toughness and hardness, so that the spliced shell has higher overall strength, cannot be bent or blocked when being placed into a metal protective sleeve, and plays a role in protecting and supporting a sensor circuit; meanwhile, the complexity of combination is low, rapid splicing can be realized, and the sensor installation efficiency is improved.
Specifically, in some embodiments of the present invention, the first sliding groove 3 and the second sliding groove 6 are circular arc grooves, the shapes of the first sliding rail 4 and the second sliding groove 6 are matched, and the shapes of the second sliding rail 5 and the first sliding groove 3 are matched; the first shell 1 and the second shell 2 are both made of insulating materials, so that the flexible circuit board 7 is not contacted with the metal protective sleeve, the normal work of the circuit is ensured, and the condition that the circuit is short-circuited and damaged due to the contact with the metal protective sleeve is avoided.
Of course, those skilled in the art can select the shape of the sliding rail and the sliding groove matched with the sliding rail to be other shapes such as a square shape, a triangular shape, etc. according to the requirement, and the present invention is not limited herein.
The insulating material can adopt the existing common materials such as: PVC, PC, PP, PE, PA, ABS, etc., wherein PVC plastic is preferably used as the insulating material for the protection device. The PVC material is selected as the insulating material for manufacturing the protection device, so that the high toughness and strength can be ensured while the PVC material is insulated, and the heat resistance of the material can be improved by adding graphite into the PVC material. Therefore, the normal work of the sensor circuit in a high-temperature environment can be better ensured.
As a practical implementation of the above embodiment, the first and second housings 1 and 2 made of PVC material can withstand the same temperature as the flexible circuit board 7, and can withstand a temperature not lower than 125 ℃. The working environment of most liquid level sensors can be met.
Referring to fig. 2, in an embodiment of the present invention, the first sliding groove 3 and the second sliding groove 6 have the same size and shape, and the first sliding rail 4 and the second sliding rail 5 have the same size and shape. The structure that the sliding grooves and the sliding rails are respectively arranged on two sides of the elongated shell as shown in the figure is adopted, and the two same structures are spliced in a centrosymmetric mode, so that the mounting efficiency is greatly improved, and the elongated shell has good strength. Of course, on the basis of the above-mentioned embodiment, a person skilled in the art can also adopt a non-centrosymmetric mode to splice, for example, two sliding grooves are arranged on two sides of the same casing, and the corresponding position of the other casing is provided with two sliding rails, so that the splicing can be completed, and a U-shaped bottom groove and a cover body with a locking structure can also be spliced, so as to realize the protection function, the utility model discloses do not do the limitation here.
Certainly, the skilled person in the art can also choose to use first spout 3 and second slide rail 5 to match, and second spout 6 and first slide rail 4 to match, but the size of two pairs of sliding connection's structure is not the same, just so must use a pair of casing of looks adaptation to splice, and it can to be no longer that same casing splices through central symmetry, and this may cause the problem that concatenation efficiency and production efficiency are low at concrete production, but still can the efficient use of splicing.
In another embodiment of the present invention, since most of the flexible circuit boards for measuring the liquid level have a thickness of about 1.4-1.5mm and a width of 6mm, the accommodating cavity 9 formed by the first casing 1 and the second casing 2 has a height of 1.5mm and a width of 6.2mm, and has the same length as the length of the casing according to the thickness and the width of the measuring chip and the flexible circuit board. Meanwhile, in order to enable the protection device to be matched with most metal protection sleeves, the protection device can be placed in the protection sleeves, the maximum width of the cross section of the protection device formed by connecting the first shell 1 and the second shell 2 is not more than 12mm, the maximum width is optimally controlled within 11mm, and a certain margin is left, because the metal protection sleeves are generally 12mm in inner diameter, the protection device can be matched with the metal protection sleeves.
To further optimize the technical solution, referring to fig. 3, when the length of one set of the accommodating devices is not enough, at least two accommodating devices can be used to be spliced end to end, wherein the length of at least one housing is smaller than that of the other long housings (for example, the housing can be cut to half of the normal length for use). The flexible circuit board can be supported by enough strength when the length requirement is met, wherein the flexible circuit board can be pasted on the inner side plane of the shell through the double faced adhesive tape, and the flexible circuit board can be clamped to keep a vertical state by directly utilizing the size of the accommodating cavity matched with the flexible circuit board.
As a feasible implementation manner of the above embodiment, the gaps formed by splicing the plurality of shells are wrapped and sealed by waterproof tapes or heat shrink tubes, so that the strength is further improved, and the sealing performance is improved.
Referring to fig. 4, in other embodiments of the present invention, the shape of the elongated housing and the accommodating cavity may be as shown in the drawings, wherein the accommodating cavity may be a cavity with a cross section in a shape of a circle, a quadrangle, a triangle, an ellipse, etc. The shape of the elongated bottom housing may be set by a person skilled in the art according to an actual use situation, and is not limited herein.
Referring to fig. 1, in still other embodiments of the present invention, the first housing 1 and/or the second housing 2 are provided with a dropping prevention structure for preventing a receiving object (e.g., a flexible circuit board) in the receiving chamber 9 from dropping.
As a feasible implementation manner of the above embodiment, the protruding manner may be arranged at intervals at corresponding positions of the first casing 1 and the second casing 2, so that the circuit board is not easily dropped due to the protruding clip of the first casing 1 and the second casing 2 after the splicing, and the circuit board is not easily bent in a vertical state, thereby making a measurement result more accurate. Of course, the first casing 1 or the second casing 2 may be fixed by only providing a protrusion, which is not limited herein.
The embodiment of the utility model also provides a liquid level sensor, which comprises the liquid level sensor protection device provided by the embodiment, wherein a flexible circuit board is arranged in a containing cavity in the liquid level sensor protection device; and a magnetic float fitted to the flexible circuit board. The protection device can well support and protect the flexible circuit board.
The utility model provides a liquid level sensor protection device adopts the buckle structure can guarantee the whole higher intensity, and the insulating casing forms the whole through the crisscross concatenation, protects the sensor circuit; the complexity of the combination is low, rapid splicing can be realized, and the sensor installation efficiency is improved.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means at least two unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An accommodating device, comprising: the device comprises a first shell and a second shell, wherein the first shell is provided with a first sliding groove and a first sliding rail, and the second shell is provided with a second sliding groove and a second sliding rail; the length of the first sliding groove, the length of the first sliding rail, the length of the second sliding groove and the length of the second sliding rail are equal, the first sliding rail slides in the second sliding groove, the second sliding rail slides in the first sliding groove, the first sliding rail completely slides in the second sliding groove, and when the second sliding rail completely slides in the first sliding groove, a containing cavity is formed between the first shell and the second shell.
2. The receiving device of claim 1, wherein the first and second runners are of the same size and shape, and the first and second runners are of the same size and shape.
3. The accommodating device as claimed in claim 1, wherein the first shell and/or the second shell is provided with a drop-preventing structure for preventing the accommodated object in the accommodating cavity from dropping.
4. The containment device of claim 3, wherein the first housing and the second housing are each made of an insulating material.
5. The containment device of claim 4, wherein said insulating material is capable of withstanding temperatures of no less than 125 ℃.
6. The accommodating device of claim 1, wherein the first sliding groove and the second sliding groove are circular arc grooves, and the first sliding rail and the second sliding groove are matched in shape and the second sliding rail and the first sliding groove are matched in shape.
7. The containment device of claim 2, wherein the first housing and the second housing have the same structure and dimensions; when the at least two accommodating devices are sequentially spliced end to end for use, the length of at least one shell is smaller than the lengths of other shells.
8. The containing device of claim 7, wherein the splicing part of the shell is wrapped and sealed by waterproof adhesive tape or heat-shrinkable tube.
9. The containment device of any one of claims 1 to 8, wherein the shape of the cross-section of the containment chamber comprises: circular, quadrilateral, and trilateral.
10. A liquid level sensor, comprising the accommodating device as claimed in any one of claims 1 to 9, wherein a flexible circuit board is arranged in an accommodating cavity in the accommodating device; and a magnetic float fitted to the flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921002554.XU CN209992041U (en) | 2019-06-28 | 2019-06-28 | Accommodating device and liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921002554.XU CN209992041U (en) | 2019-06-28 | 2019-06-28 | Accommodating device and liquid level sensor |
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| CN209992041U true CN209992041U (en) | 2020-01-24 |
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| CN201921002554.XU Active CN209992041U (en) | 2019-06-28 | 2019-06-28 | Accommodating device and liquid level sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196090A (en) * | 2019-06-28 | 2019-09-03 | 安徽络嵌控制***有限公司 | A kind of accommodating device and liquid level sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196090A (en) * | 2019-06-28 | 2019-09-03 | 安徽络嵌控制***有限公司 | A kind of accommodating device and liquid level sensor |
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