Liquid level sensor

Abstract

The utility model discloses a liquid level sensor which comprises a fixing plate arranged on a liquid level sensor body, an adhesive layer is arranged on the fixing plate, the portion, located in front of the adhesive layer, of the liquid level sensor body is a fastening section, and a plurality of protrusions are arranged on the outer wall of the fastening section. And the fastening section is fixed in the mounting hole in an interference fit manner. Compared with the prior art, the liquid level sensor is suitable for being mounted from back to front, and the fastening section is inserted into the mounting hole from back to front until the adhesive layer is tightly adhered to mounting equipment. Due to the arrangement of the protrusions, the fastening effect of the fastening section can be better.

Description

Technical Field

[0001] The utility model relates to the technical field of induction switch manufacturing, in particular to a liquid level sensor. Background Art

[0002] A proximity switch is a position switch that can be operated without direct mechanical contact with moving parts. However, we often need to check whether there is water leakage in the environment. This requires installing a water leakage detection device in addition to the proximity switch. Figure 1 The prior art is to integrate the two together and then fix them on other equipment by threaded connection. However, some installation environments are not suitable for threaded fixing from front to back. Utility Model Content

[0003] The utility model provides a liquid level sensor, which is used to solve the problem that the existing liquid level sensor is not suitable for installation from back to front.

[0004] The utility model provides a liquid level sensor, comprising a fixing plate arranged on a liquid level sensor body, an adhesive layer being arranged on the fixing plate, a liquid level sensor body located in front of the adhesive layer being a fastening section, a plurality of protrusions being arranged on an outer wall of the fastening section, and the fastening section being fixed in a mounting hole by means of interference fit.

[0005] Preferably, a support is fixed to the rear end of the fixing plate, and the support is provided with a wire hole for the wire of the liquid level sensor to pass through.

[0006] Preferably, the support comprises a connecting column and a supporting plate, two ends of the connecting column are respectively fixed to the fixing plate and the supporting plate, and the wire hole is arranged in the connecting column.

[0007] Preferably, a wire groove communicating with the wire hole is provided at the rear end of the connecting column, and the wire groove passes through the supporting plate.

[0008] Preferably, the width of the wire groove is greater than the diameter of the wire hole.

[0009] Preferably, a plurality of ribs are fixed to the outer wall of the connecting column, and two ends of the ribs are respectively fixed to the fixing plate and the supporting plate.

[0010] Preferably, the width of the ribs at the middle position is smaller than the width at both ends.

[0011] Preferably, one of the ribs extends to the notch of the wire duct.

[0012] Preferably, the protrusion is ring-shaped.

[0013] Preferably, the fixing plate and the supporting plate are both circular in shape.

[0014] Compared with the prior art, the liquid level sensor of the utility model is suitable for installation from the back to the front, and the fastening section is inserted into the installation hole from the back to the front until the adhesive layer is tightly adhered to the installation device. Among them, the setting of the protrusion can make the fastening effect of the fastening section better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a liquid level sensor in the prior art;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 This is a structural schematic diagram of the utility model from another perspective.

[0019] Reference numerals:

[0020] 1. Liquid level sensor body, 2. Fixing plate, 3. Adhesive layer, 4. Protrusion, 5. Support, 51. Connecting column, 52. Support plate, 53. Rib plate, 511. Wire hole, 512. Wire groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Refer to the attached Figure 2 The utility model provides a liquid level sensor, including a fixing plate 2 arranged on a liquid level sensor body 1, an adhesive layer 3 is arranged on the fixing plate 2, the liquid level sensor body 1 located in front of the adhesive layer 3 is a fastening section, the outer wall of the fastening section is provided with a plurality of protrusions 4, and the fastening section is fixed in the mounting hole by interference fit. The liquid level sensor of the utility model is installed in the mounting hole from back to front, first tear off the adhesive tape on the adhesive layer 3, insert the fastening section into the mounting hole, until the adhesive layer 3 is tightly adhered to the mounting device. Among them, the setting of the protrusions 4 can make the fastening effect of the fastening section better.

[0023] As another embodiment of the present invention: Figure 3 A support 5 is fixed to the rear end of the fixing plate 2, and a wire hole 511 is provided on the support 5 for the wire of the liquid level sensor to pass through. The fastening section is inserted into the mounting hole by pushing the support 5, which is beneficial to protecting the liquid level sensor body 1.

[0024] An implementation manner of the support 5: the support 5 includes a connecting column 51 and a support plate 52, two ends of the connecting column 51 are respectively fixed to the fixing plate 2 and the support plate 52, and a wire hole 511 is provided in the connecting column 51.

[0025] As another embodiment of the present invention, the rear end of the connecting column 51 is provided with a wire groove 512 connected to the wire hole 511, and the wire groove 512 passes through the support plate 52. The wire in the wire hole 511 can come out from the wire groove 512, so it does not need to pass through the support plate 52, and when the fastening section is pushed into the installation hole through the support plate 52, the wire can be effectively protected.

[0026] Specifically, the width of the wire groove 512 is greater than the diameter of the wire hole 511 .

[0027] As another embodiment of the present invention: a plurality of ribs 53 are fixed to the outer wall of the connecting column 51, and two ends of the ribs 53 are respectively fixed to the fixing plate 2 and the supporting plate 52. This arrangement is conducive to strengthening the structural strength of the support 5.

[0028] As another embodiment of the present invention, the width of the middle position of the rib plate 53 is smaller than the width of the two ends, thereby increasing the contact area between the rib plate 53 and the support plate 52 and the contact area between the rib plate 53 and the fixing plate 2. This arrangement further strengthens the structural strength of the support 5.

[0029] As another implementation of the present invention: a rib plate 53 extends to the notch of the wire groove 512 .

[0030] Specifically, the protrusion 4 is in a circular ring shape, and the fixing plate 2 and the supporting plate 52 are both in a circular shape.

[0031] As another embodiment of the present invention: the fixing plate 2 and the support 5 are an integrated structure, and their materials are both plastic.

[0032] The liquid level sensor of the utility model is suitable for installation from the back to the front, and the fastening section is inserted into the installation hole from the back to the front until the adhesive layer 3 is tightly adhered to the installation device. Among them, the setting of the protrusion 4 can make the fastening effect of the fastening section better.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A liquid level sensor, characterized in that: It comprises a fixing plate arranged on the liquid level sensor body, the fixing plate is provided with an adhesive layer, the liquid level sensor body located in front of the adhesive layer is a fastening section, the outer wall of the fastening section is provided with a plurality of protrusions, and the fastening section is fixed in the mounting hole by interference fit.

2. The liquid level sensor according to claim 1, characterized in that: A support is fixed to the rear end of the fixing plate, and a wire hole for the wire of the liquid level sensor to pass through is provided on the support.

3. The liquid level sensor according to claim 2, characterized in that: The support comprises a connecting column and a supporting plate, two ends of the connecting column are respectively fixed to the fixing plate and the supporting plate, and the wire hole is arranged in the connecting column.

4. The liquid level sensor according to claim 3, characterized in that: A wire groove communicated with the wire hole is provided at the rear end of the connecting column, and the wire groove passes through the supporting plate.

5. The liquid level sensor according to claim 4, characterized in that: The width of the wire groove is greater than the diameter of the wire hole.

6. The liquid level sensor according to claim 5, characterized in that: A plurality of ribs are fixed on the outer wall of the connecting column, and two ends of the ribs are respectively fixed to the fixing plate and the supporting plate.

7. The liquid level sensor according to claim 6, characterized in that: The width of the ribs at the middle position is smaller than the width at both ends.

8. The liquid level sensor according to claim 7, characterized in that: One of the ribs extends to the notch of the wire duct.

9. The liquid level sensor according to claim 1, characterized in that: The protrusion is in a circular ring shape.

10. The liquid level sensor according to claim 3, characterized in that: The fixing plate and the supporting plate are both circular in shape.

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