CN220120208U - Oil level detection device and system - Google Patents

Abstract

The utility model discloses an oil level detection device and an oil level detection system, and relates to the field of oil level detection. The oil level detection device comprises a circuit board, a floater, a conductive piece and a fixing seat. The circuit board is provided with conducting layer and resistance circuit along its length direction respectively, and a plurality of resistance card of resistance circuit are along the length direction interval setting of circuit board, are connected with the contact burst between two adjacent resistance card. The float can drive the conductive piece to slide and make the conductive piece contact with the conductive layer and the contact fragments at different positions respectively. The fixing base is provided with a containing cavity for containing the first wiring inserting piece and the second wiring inserting piece, and one end of the circuit board penetrates through the fixing base so that the first wiring inserting piece, the conducting layer, the conducting piece, the resistor circuit and the second wiring inserting piece are connected to form a conducting circuit. According to the oil level detection device provided by the utility model, the plurality of resistance pieces are arranged on the circuit board at intervals, so that the number of the resistance pieces is not limited by the volume of the accommodating cavity, and the oil level detection device can output more resistance signals with higher precision.

Description

Oil level detection device and system

Technical Field

The utility model relates to the technical field of oil level detection, in particular to an oil level detection device and an oil level detection system.

Background

The traditional oil level detection device generally comprises a liquid containing cavity for allowing a floater to move and a sealing cavity for connecting a resistor plate, wherein a plurality of static contacts are arranged at one end of the liquid containing cavity, a plurality of resistor plates conducted with the static contacts are arranged at one end of the sealing cavity, and the floater can drive the movable contacts to be respectively contacted with the static contacts with different heights when moving, so that the oil level detection device can output resistance signals corresponding to the height of the floater, and finally, the resistance signals are converted into residual oil quantity values and residual driving mileage on an instrument. However, since the space of the seal chamber is limited, too many resistance pieces cannot be accommodated, which results in a limited number and accuracy of resistance value signals that the oil level detection device can output.

Disclosure of Invention

The utility model provides an oil level detection device and an oil level detection system, which are used for solving the problems that the oil level detection device in the prior art has limited sealed cavity space and cannot accommodate excessive resistance sheets, so that the number and the precision of resistance signals which can be output by the oil level detection device are limited.

To solve the above problems, the present utility model provides: an oil level detection device, comprising:

the circuit board is provided with a conductive layer and a resistor circuit along the length direction of the circuit board, the resistor circuit comprises a plurality of resistor pieces and a plurality of contact fragments, the resistor pieces are arranged at intervals along the length direction of the circuit board, and the contact fragments are connected between two adjacent resistor pieces;

the floater is connected with the circuit board in a sliding way;

the conductive piece is connected with the floater and can be respectively contacted with the conductive layer and the contact fragments at different positions;

the fixing base is provided with a containing cavity, a first wiring inserting piece and a second wiring inserting piece are arranged in the containing cavity, and one end of the circuit board penetrates through the fixing base and is respectively and electrically connected with the first wiring inserting piece and the second wiring inserting piece, so that the first wiring inserting piece, the conducting layer, the conducting piece, the resistor circuit and the second wiring inserting piece are connected to form a conducting circuit.

In one possible embodiment, a plurality of the contact patches are arranged at intervals along the length direction of the circuit board, and a plurality of the resistor patches and a plurality of the contact patches are arranged side by side.

In one possible embodiment, the width of the gap between two adjacent contact fragments is C, and C is 0.3 mm.ltoreq.C.ltoreq.0.5 mm.

In one possible embodiment, among the two adjacent contact segments, one of the contact segments is provided with a protrusion extending toward the other contact segment, and the other contact segment is provided with a notch corresponding to the position of the protrusion, and the protrusion is at least partially located in the notch so that the conductive member can contact with at least one of the contact segments.

In one possible implementation manner, the conductive layer and the resistor circuit are arranged opposite to each other, the float and the conductive member are respectively sleeved on the circuit board in a sliding manner, and the conductive member is provided with a first elastic arm capable of being abutted with the conductive layer and a second elastic arm abutted with the contact split.

In one possible implementation manner, the float is provided with a mounting groove for mounting the conductive member, and the conductive member is fixed in the mounting groove and sleeved between the float and the circuit board.

In one possible implementation manner, the fixing base includes a base and a socket, the fixing base and the socket are detachably connected and enclose to form the accommodating cavity, the socket is provided with the first wiring inserting piece and the second wiring inserting piece, and one end of the circuit board is penetrated in the base and is electrically connected with the first wiring inserting piece and the second wiring inserting piece respectively.

In one possible embodiment, the accommodating cavity is filled with a sealant layer.

In one possible embodiment, the oil level detection device further includes a sleeve and a cover, one end of the sleeve is connected with the base, the circuit board, the float and the conductive member are respectively located in the sleeve, the cover is covered on one end of the sleeve away from the base, and the cover is connected with one end of the circuit board away from the base.

In one possible embodiment, the sleeve and/or the cover are/is provided with an oil inlet.

In one possible implementation manner, the oil level detection device further comprises a sealing ring, an annular groove is formed in one surface, close to the circuit board, of the base, and the sealing ring is installed in the annular groove.

The utility model also provides: an oil level detection system includes the oil level detection device provided in any one of the above embodiments and an instrument for detecting a resistance signal, the instrument being electrically connected to the first wiring tab and the second wiring tab, respectively.

The beneficial effects of the utility model are as follows: the utility model provides an oil level detection device and an oil level detection system, wherein one end of a circuit board of the oil level detection device is inserted into a fixed seat and is communicated with a first wiring inserting sheet and a resistance circuit and a second wiring inserting sheet in a containing cavity, and meanwhile, a conductive piece is respectively contacted and communicated with contact fragments of the conductive layer and the resistance circuit, so that the first wiring inserting sheet, the conductive layer, the conductive piece, the resistance circuit and the second wiring inserting sheet are connected to form a conducting circuit. When the oil level detection device is used, the floater can drive the conductive piece to slide along the length direction of the circuit board, so that the conductive piece is respectively conducted with the contact fragments at different positions, the number of the resistance pieces connected into the conducting circuit is changed, the resistance value of the conducting circuit is further changed, and finally, the oil level detection device can output a resistance value signal corresponding to the height of the floater. The plurality of resistance cards are arranged on the circuit board at intervals along the length direction of the circuit board, so that the space on the circuit board can be fully utilized, the number of the resistance cards is not limited by the volume of the accommodating cavity, and the oil level detection device can output more resistance signals with higher precision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic configuration diagram of an oil level detection device provided by an embodiment of the present utility model;

fig. 2 shows a schematic cross-sectional structure of an oil level detection device provided by an embodiment of the present utility model;

fig. 3 shows an exploded structural schematic view of an oil level detection device provided by an embodiment of the present utility model;

fig. 4 shows a schematic structural view of a circuit board of the oil level detection device provided by the embodiment of the utility model.

Description of main reference numerals:

100-a circuit board; 120-resistor circuit; 121-a resistor sheet; 122-contact slicing; 123-convex; 124-notch; 200-float; 210-mounting slots; 300-conductive member; 310-a first resilient arm; 320-a second resilient arm; 400-fixing seat; 410-a receiving cavity; 420-first wiring insert piece; 430-a second wiring insert; 440-base; 441-an annular groove; 442-sealing ring; 450-socket; 500-sleeve; 510-an oil inlet hole; 600-cover.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Example 1

Referring to fig. 1, 2 and 3, the present embodiment provides an oil level detection device, which is applied to the field of oil level detection. The oil level detection device includes a circuit board 100, a float 200, a conductive member 300, and a fixing base 400. The circuit board 100 is provided with a conductive layer and a resistor circuit 120 along a length direction thereof, the resistor circuit 120 comprises a plurality of resistor pieces 121 and a plurality of contact pieces 122, the resistor pieces 121 are arranged at intervals along the length direction of the circuit board 100, and the contact pieces 122 are connected between two adjacent resistor pieces 121. The float 200 is slidably coupled to the circuit board 100. The conductive member 300 is connected to the float 200, and the conductive member 300 can be contacted with the conductive layer and the contact fragments 122 at different positions, respectively. The fixing base 400 has a receiving cavity 410, a first wire inserting piece 420 and a second wire inserting piece 430 are disposed in the receiving cavity 410, and one end of the circuit board 100 is disposed through the fixing base 400 and electrically connected to the first wire inserting piece 420 and the second wire inserting piece 430, so that the first wire inserting piece 420, the conductive layer, the conductive member 300, the resistor circuit 120 and the second wire inserting piece 430 are connected to form a conductive circuit.

In the oil level detection device provided by the embodiment of the utility model, when the oil level detection device is assembled, one end of the circuit board 100 is inserted into the fixing seat 400, conduction between the conductive layer and the first wiring inserting sheet 420 and conduction between the resistive wire 120 and the second wiring inserting sheet 430 are realized in the accommodating cavity 410, and meanwhile, the conductive piece 300 is respectively in contact conduction with the conductive layer and the contact piece 122 of the resistive wire 120, so that the first wiring inserting sheet 420, the conductive layer, the conductive piece 300, the resistive wire 120 and the second wiring inserting sheet 430 are connected to form a conduction circuit. When in use, the float 200 can drive the conductive member 300 to slide along the length direction of the circuit board 100, so that the conductive member 300 is respectively conducted with the contact fragments 122 at different positions, thereby changing the number of the resistor pieces 121 connected into the conducting circuit, further changing the resistance value of the conducting circuit, and finally enabling the oil level detection device to output a resistance value signal corresponding to the height of the float 200. The plurality of resistor pieces 121 are disposed on the circuit board 100 along the length direction of the circuit board 100 at intervals, so that the space on the circuit board 100 can be fully utilized, the number of the resistor pieces 121 is not limited by the volume of the accommodating cavity 410, and the oil level detection device can output more resistance signals with higher precision.

Wherein the first wire insert sheet 420 and the second wire insert sheet 430 are used for electrical connection with an instrument for detecting a resistance signal.

Example two

The present embodiment proposes a manner of disposing the circuit board 100 on the basis of the first embodiment. As shown in fig. 4, in the above embodiment, alternatively, a plurality of contact pieces 122 are arranged at intervals along the length direction of the circuit board 100, and a plurality of resistor pieces 121 and a plurality of contact pieces 122 are arranged side by side.

Specifically, when the plurality of resistor sheets 121 and the plurality of contact fragments 122 are respectively disposed at intervals along the length direction of the circuit board 100, so that the plurality of resistor sheets 121 and the plurality of contact fragments 122 are disposed side by side, the layout manner of the resistor circuit 120 can make the resistor sheets 121 and the contact fragments 122 fully utilize the space of the circuit board 100, and improve the space utilization rate. And can make two adjacent contact patches 122 more close, avoid the resistance sheet 121 to lie between two adjacent contact patches 122 and influence the problem that the conductive piece 300 is contacted with the contact patches 122.

As shown, in the above embodiment, alternatively, the gap width between adjacent two contact patches 122 is C, satisfying 0.3 mm.ltoreq.C.ltoreq.0.5 mm.

Specifically, when the gap width between two adjacent contact fragments 122 is greater than 0.3mm, the problem that the two adjacent contact fragments 122 are conducted due to too close distance can be avoided to a certain extent. When the conductive member 300 slides to a gap between two adjacent contact fragments 122, the gap width between two adjacent contact fragments 122 is smaller than 0.5mm, so that the conductive member 300 can be in contact conduction with at least one contact fragment 122, and the problem of circuit breaking caused by non-contact between the conductive member 300 and the contact fragments 122 can be avoided to a certain extent, thereby avoiding the problem of interruption of the output of the resistance signal and maintaining the stability of the output of the resistance signal.

As shown in fig. 4, in the above embodiment, alternatively, among the two adjacent contact pieces 122, one contact piece 122 is provided with a protrusion 123 extending toward the other contact piece 122, the other contact piece 122 is provided with a notch 124 corresponding to the position of the protrusion 123, and the protrusion 123 is located at least partially within the notch 124 so that the conductive member 300 can be in contact with the at least one contact piece 122.

Specifically, among the two adjacent contact segments 122, the protrusion 123 of one contact segment 122 can be at least partially located in the notch 124 of the other contact segment 122, and this arrangement can enable the conductive member 300 to contact with at least one contact segment 122 when sliding along the length direction of the circuit board 100, so as to avoid the problem of interruption of the output of the resistance signal.

As shown in fig. 3, in the above embodiment, optionally, the conductive layer and the resistor circuit 120 are disposed opposite to each other, the float 200 and the conductive member 300 are respectively slidably sleeved on the circuit board 100, and the conductive member 300 is provided with a first elastic arm 310 capable of abutting against the conductive layer and a second elastic arm 320 abutting against the contact tab 122.

Specifically, the conductive layers and the resistor circuit 120 are disposed opposite to each other, so that the space of the circuit board 100 can be utilized to a greater extent, and the floats 200 and the conductive members 300 are respectively slidably sleeved on the circuit board 100, so that the circuit board 100 can act as a guide rail, and the sliding stability of the floats 200 and the conductive members 300 is improved. The conductive member 300 is provided with a first elastic arm 310 capable of abutting against the conductive layer and a second elastic arm 320 abutting against the contact piece 122, and the first elastic arm 310 and the second elastic arm 320 have elastic forces, so that the first elastic arm 310 and the conductive layer and the second elastic arm 320 and the contact piece 122 can be kept in an abutting state, thereby ensuring the stability of the circuit.

As shown in fig. 2 and 3, in the above embodiment, optionally, the float 200 is provided with a mounting groove 210 for mounting the conductive member 300, and the conductive member 300 is fixed in the mounting groove 210 and is sleeved between the float 200 and the circuit board 100.

Specifically, the conductive member 300 is fixed in the mounting groove 210 to limit the conductive member 300 and the float 200, and the conductive member 300 is sleeved between the float 200 and the circuit board 100 to improve the compactness of the structure, and the conductive member 300 can fully utilize the space between the float 200 and the circuit board 100.

Example III

The present embodiment proposes a setting manner of the fixing base 400 based on the first embodiment or the second embodiment.

As shown in fig. 2 and 3, in the above embodiment, optionally, the fixing base 400 includes a base 440 and a socket 450, the fixing base 400 and the socket 450 are detachably connected and enclose to form the accommodating cavity 410, the socket 450 is provided with a first wiring insert sheet 420 and a second wiring insert sheet 430, and one end of the circuit board 100 is penetrated through the base 440 and is electrically connected with the first wiring insert sheet 420 and the second wiring insert sheet 430 respectively.

Specifically, during installation, one end of the circuit board 100 may be first installed on the socket 450, and the conductive layer and the first wire inserting sheet 420 may be electrically connected by welding or the like, and the resistive circuit 120 and the second wire inserting sheet 430 may be electrically connected by welding or the like. Then, the other end of the circuit board 100 passes through the base 440, so that the base 440 is detachably connected with the socket 450 and encloses the accommodating cavity 410 to form a seal.

In the above embodiment, optionally, the accommodating cavity 410 is filled with a sealant layer.

Specifically, during assembly, after the conductive layer is electrically connected with the first wire inserting piece 420 and the resistor circuit 120 is electrically connected with the second wire inserting piece 430, a sealant layer is filled in the socket 450 in a filling manner, and the sealant layer can cover the circuit board 100, the first wire inserting piece 420 and the second wire inserting piece 430, so that the effects of preventing loosening of a structure, rust prevention and the like are achieved.

As shown in fig. 2 and 3, in the above-described embodiment, optionally, the oil level detection device further includes a sleeve 500 and a cover 600, one end of the sleeve 500 is connected to the base 440, the circuit board 100, the float 200, and the conductive member 300 are respectively located in the sleeve 500, the cover 600 covers an end of the sleeve 500 remote from the base 440, and the cover 600 is connected to an end of the circuit board 100 remote from the base 440.

Specifically, during assembly, the circuit board 100 and the float 200 may be inserted into the sleeve 500, one end of the sleeve 500 may be connected to the base 440, and the cover 600 may be covered on one end of the sleeve 500 remote from the base 440 and connected to the circuit board 100, the sleeve 500 and the cover 600 may protect the circuit board 100, the float 200 and the conductive member 300, and simultaneously, the cover 600 may be connected to the sleeve 500 and the circuit board 100, respectively, to improve the connection strength.

As shown in fig. 1, in the above embodiment, optionally, the sleeve 500 and/or the cover 600 is provided with an oil inlet 510.

Specifically, an oil inlet 510 may be provided in the sleeve 500 and/or the cover 600 such that liquid can enter the sleeve 500 through the oil inlet 510 to drive the float 200 to float in a vertical direction. Wherein, when the hole diameter of the oil inlet hole 510 is small, it can function to filter impurities in the liquid, thereby preventing the impurities from entering the inside of the sleeve 500.

As shown in fig. 2, in the above embodiment, optionally, the oil level detection device further includes a sealing ring 442, and an annular groove 441 is formed on a surface of the base 440 adjacent to the circuit board 100, and the sealing ring 442 is mounted in the annular groove 441.

Specifically, when the oil level detection device is mounted on a container such as an oil tank, one side of the circuit board 100 provided with the floater 200 is located in the oil tank, meanwhile, the base 440 and the container can be connected in a screw connection mode, and the base 440 and the container are in sealing connection through the sealing ring 442, and the sealing ring 442 is fixed and limited by the annular groove 441 on the base 440, so that the sealing ring 442 is prevented from sliding.

Example IV

Another embodiment of the present utility model provides an oil level detection system including the oil level detection device of any one of the above embodiments and an instrument for detecting a resistance value signal, the instrument being electrically connected to the first wiring insertion piece 420 and the second wiring insertion piece 430, respectively.

The oil level detection system provided by the embodiment of the utility model is provided with the oil level detection device provided by any embodiment, so that all the beneficial effects of the oil level detection device provided by any embodiment are provided, and the detailed description is omitted herein.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (12)

1. An oil level detection device characterized by comprising:

the circuit board is provided with a conductive layer and a resistor circuit along the length direction of the circuit board, the resistor circuit comprises a plurality of resistor pieces and a plurality of contact fragments, the resistor pieces are arranged at intervals along the length direction of the circuit board, and the contact fragments are connected between two adjacent resistor pieces;

the floater is connected with the circuit board in a sliding way;

the conductive piece is connected with the floater and can be respectively contacted with the conductive layer and the contact fragments at different positions;

the fixing base is provided with a containing cavity, a first wiring inserting piece and a second wiring inserting piece are arranged in the containing cavity, and one end of the circuit board penetrates through the fixing base and is respectively and electrically connected with the first wiring inserting piece and the second wiring inserting piece, so that the first wiring inserting piece, the conducting layer, the conducting piece, the resistor circuit and the second wiring inserting piece are connected to form a conducting circuit.

2. The oil level detection device according to claim 1, wherein a plurality of the contact patches are arranged at intervals in a longitudinal direction of the circuit board, and a plurality of the resistor patches and a plurality of the contact patches are arranged side by side.

3. The oil level detection apparatus according to claim 2, wherein a gap width between adjacent two of the contact patches is C, satisfying 0.3mm C0.5 mm.

4. The oil level detection device according to claim 2, wherein, among the adjacent two contact pieces, one of the contact pieces is provided with a protrusion extending in a direction of the other contact piece, the other contact piece is provided with a notch corresponding to a position of the protrusion, and the protrusion is located at least partially within the notch so that the conductive member can be brought into contact with at least one of the contact pieces.

5. The oil level detection device according to claim 1, wherein the conductive layer and the resistor circuit are disposed opposite to each other, the float and the conductive member are slidably fitted over the circuit board, respectively, and the conductive member is provided with a first elastic arm capable of abutting the conductive layer and a second elastic arm abutting the contact segment.

6. The oil level detection device according to claim 5, wherein the float is provided with a mounting groove for mounting the conductive member, and the conductive member is fixed in the mounting groove and is fitted between the float and the circuit board.

7. The oil level detection device according to any one of claims 1 to 6, characterized in that the fixing base includes a base and a socket, the fixing base and the socket are detachably connected and enclose to form the accommodating chamber, the socket is provided with the first wiring insertion sheet and the second wiring insertion sheet, and one end of the circuit board is inserted into the base and electrically connected with the first wiring insertion sheet and the second wiring insertion sheet, respectively.

8. The oil level detection apparatus according to claim 7, wherein the accommodating chamber is filled with a sealant layer.

9. The oil level detection device according to claim 7, further comprising a sleeve and a cover, wherein one end of the sleeve is connected to the base, the circuit board, the float, and the conductive member are respectively located in the sleeve, the cover is provided to cover an end of the sleeve away from the base, and the cover is connected to an end of the circuit board away from the base.

10. The oil level detection apparatus according to claim 9, wherein the sleeve and/or the cover body is provided with an oil inlet hole.

11. The oil level detection device according to claim 7, further comprising a seal ring, wherein an annular groove is formed in a surface of the base adjacent to the circuit board, and the seal ring is mounted in the annular groove.

12. An oil level detection system comprising the oil level detection apparatus according to any one of claims 1 to 11 and an instrument for detecting a resistance value signal, the instrument being electrically connected to the first wiring tab and the second wiring tab, respectively.