Sensor

Abstract

The embodiment of the utility model provides a sensor, and the sensor comprises a housing, the inner surface of one axial side of the housing is provided with a first embedding part; the wire cap is fixed at the end part of one axial side of the shell, and the outer surface of the wire cap is provided with a second embedding part which is matched with the first embedding part in an embedding manner; and the wire part penetrates through the wire cap, and the wire part and the wire cap abut against each other in the axial direction. Through simple structures such as embedding fixation and abutting connection, the resistance of the lead during drawing can be increased, so that the drawing resistance of the lead is improved, and the dependence on the material of the sealant, the material of the lead cap and the material of the lead can be reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a sensor. Background Art

[0002] Sensors are widely used. For example, on industrial production lines, various sensors can be used to detect the quantity, status, etc. of products.

[0003] Proximity sensors are a common type of sensor on production lines. Generally, the sensor head of the proximity sensor is installed at a suitable position on the production line, and the sensor head is powered and detected through the wires led out from the sensor head. Due to the complex production site environment, the wires may sometimes be pulled, and loose wires may affect the normal operation of the sensor. In order to improve the wire's pull-out resistance, a sealant with high bonding strength can be filled inside the product to prevent the wire from being pulled out by relying on the adhesive force of the sealant.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Utility Model Content

[0005] The inventors have discovered that a structure that only relies on the adhesive force of a sealant to prevent the wire from being pulled out has high requirements on the adhesive force and strength of the sealant, and has a high requirement on the bonding area. At the same time, it also requires that the wire cap in contact with the sealant and the wire have high bonding strength with the sealant. Therefore, there are high requirements on the materials of the sealant, the wire cap, and the wire, and poor design flexibility. In addition, the integrity of the internal filling glue will also affect the fixation of the wire cap and the wire. For small-sized sensors, the size of the sensor limits the bonding length between the sealant and the wire cap, resulting in quality risks in the wire's anti-pullout function.

[0006] In order to solve at least one of the above problems or other similar problems, an embodiment of the present application provides a sensor to improve the pull-out resistance of a wire.

[0007] The present application provides a sensor, the sensor comprising:

[0008] A housing, wherein an inner surface of one axial side of the housing has a first fitting portion;

[0009] a wire cap, the wire cap being fixed to an end portion of one axial side of the housing, the outer surface of the wire cap having a second fitting portion fittingly matched with the first fitting portion; and

[0010] The lead portion passes through the lead cap and abuts against the lead cap in the axial direction.

[0011] In addition, optionally, the first engaging portion includes a convex portion provided on the inner surface of one axial side of the housing, and the second engaging portion includes a concave portion provided on the outer surface of the wire cap and cooperating with the convex portion; and / or

[0012] The first fitting portion includes a recessed portion provided on an inner surface of the housing on one axial side, and the second fitting portion includes a protruding portion provided on an outer surface of the wire cap and matched with the recessed portion.

[0013] In addition, optionally, the shape of the cross section of the protrusion along the radial direction includes rectangle, trapezoid, semicircle, and triangle.

[0014] In addition, optionally, the second engaging portion surrounds the entire circumference of the outer surface of the wire cap; or

[0015] The second engaging portions are distributed at intervals around the entire circumference of the outer surface of the wire cap.

[0016] In addition, optionally, the first engaging portion includes a spring sheet disposed on an inner surface of one axial side of the housing, and the second engaging portion includes a step portion disposed on an outer surface of the wire cap and engaged with the spring sheet; and / or

[0017] The first engaging portion includes a step portion provided on an inner surface of one axial side of the housing, and the second engaging portion includes a spring piece provided on an outer surface of the wire cap and engaged with the step portion.

[0018] In addition, optionally, the first engaging portion and the second engaging portion are threads that fit together.

[0019] In addition, optionally, the wire portion includes a wire and a ring portion fixed to the outer circumference of the wire,

[0020] The inner wall of the wire cap includes a large diameter portion, a step portion and a small diameter portion in sequence from the other axial side to the one axial side, wherein the step portion connects the large diameter portion and the small diameter portion.

[0021] The inner diameter of the small diameter portion is larger than the diameter of the wire and smaller than the outer diameter of the ring portion. The wire passes through the small diameter portion. The ring portion is accommodated in the large diameter portion and abuts against the step portion.

[0022] In addition, optionally, the wire cap has a glue injection hole extending along the axial direction for injecting sealant.

[0023] The interior of the housing is filled with sealant, and the ring portion is formed by curing the sealant.

[0024] In addition, optionally, the ring portion is fixed to the outer periphery of the wire by bonding or heat pressing; or

[0025] The ring portion is fixed to the outer circumference of the wire by low-pressure injection molding or injection molding.

[0026] Additionally, optionally, the sensor includes a proximity sensor.

[0027] One of the beneficial effects of the embodiments of the present application is that: through simple structures such as interlocking fixation and abutment, the resistance of the wire when it is pulled can be increased, thereby improving the wire's pulling resistance and reducing the dependence on the material of the sealant, the material of the wire cap, and the material of the wire.

[0028] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the terms of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

[0029] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0030] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

[0032] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] In the attached picture:

[0034] Figure 1 is a perspective view of a sensor according to an embodiment of the present application;

[0035] Figure 2 yes Figure 1 An exploded schematic diagram of the sensor shown;

[0036] Figure 3 is a schematic diagram of an implementation of a housing and a wire cap of an embodiment of the present application;

[0037] Figure 4 is a schematic diagram of another implementation of the housing and the wire cap of the embodiment of the present application;

[0038] Figure 5 It is a schematic diagram of the manufacturing process of the sensor of the embodiment of the present application.

[0039] Tag Name

[0040] 1: sensor;

[0041] 10: Shell;

[0042] 101: inner surface;

[0043] 110: First chimeric part;

[0044] 20: Wire cap;

[0045] 201: outer surface;

[0046] 202: inner wall;

[0047] 203: glue injection hole;

[0048] 210: Second chimeric part;

[0049] 220: Large diameter part;

[0050] 221: Step part;

[0051] 222: Trail section;

[0052] 30: wire part;

[0053] 310: Wire

[0054] 320: Ring

[0055] 40: Induction Department

[0056] 400: Sealant;

[0057] 50: Circuit board;

[0058] 60: wire;

[0059] OO': center axis. DETAILED DESCRIPTION

[0060] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the specification and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the attached claims.

[0061] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0062] In the embodiments of the present application, the singular forms "a", "the", etc. may include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0063] In addition, for the convenience of explanation, in the embodiment of the present application, the direction along the central axis OO' of the shell 10 or the direction parallel to the central axis OO' is recorded as "axial", the side pointing from O' to O along the "axial direction" is called "one axial side", the side opposite to the "one axial side" is called "the other axial side", and the radial direction centered on the central axis OO' is called "radial".

[0064] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0065] The present application embodiment provides a sensor, Figure 1 is a perspective view of a sensor according to an embodiment of the present application, Figure 2 yes Figure 1 An exploded schematic diagram of the sensor is shown.

[0066] like Figure 1 and Figure 2 As shown, the sensor 1 includes a housing 10, a wire cap 20 and a wire portion 30. The wire cap 20 is fixed to an end portion of one axial side of the housing 10. The wire portion 30 passes through the wire cap 20 and abuts against the wire cap 20 in the axial direction.

[0067] like Figure 2As shown, the inner surface 101 of the housing 10 on one axial side has a first engaging portion 110 , and the outer surface 201 of the wire cap 20 has a second engaging portion 210 engaged with the first engaging portion 110 .

[0068] Thus, the housing 10 and the lead cap 20 are fitted and fixed together, and the lead portion 30 and the lead cap 20 are in axial contact with each other, so that the resistance when the lead is pulled out can be increased, thereby improving the lead pulling resistance.

[0069] In addition, since the wire is prevented from being pulled out by the mechanical structure, the requirements for the bonding force of the internally filled sealant, the strength of the sealant itself, and the bonding length can be reduced, that is, the sealant only requires the necessary bonding strength and bonding length, and the choice of the material of the wire cap and the material of the wire is wider, so the design flexibility and the stability of the pull-out resistance quality can be improved. In addition, the lower bonding length requirement is more conducive to the realization of a shorter product size.

[0070] Figure 3 is a schematic diagram of an implementation of a housing and a wire cap in an embodiment of the present application, Figure 4 It is a schematic diagram of another implementation of the housing and the wire cap of the embodiment of the present application.

[0071] like Figure 3 and Figure 4 As shown, the first engaging portion 110 may be a convex portion provided on the inner surface 101 on one axial side of the housing 10, and the second engaging portion 210 may be a concave portion provided on the outer surface 201 of the wire cap 20 to cooperate with the convex portion of the first engaging portion 110. However, the embodiment of the present application is not limited thereto, the first engaging portion 110 may also be a concave portion provided on the inner surface 101 on one axial side of the housing 10, and the second engaging portion 210 may be a convex portion provided on the outer surface 201 of the wire cap 20 to cooperate with the concave portion, or the first engaging portion 110 and the second engaging portion 210 may also include both a convex portion and a concave portion, respectively, and the embodiment of the present application does not limit this. Optionally, the shape of the cross section of the convex portion along the radial direction may be a rectangle, a trapezoid, a semicircle, a triangle, etc., and the shape of the concave portion may correspond to the convex portion, and the embodiment of the present application does not limit this.

[0072] In some embodiments, Figure 3 As shown, the second embedding portion 210 surrounds the entire circumference of the outer surface 201 of the wire cap 20 , and correspondingly, the first embedding portion 110 is formed along the entire circumference of the inner surface 101 of the housing 10 .

[0073] In some embodiments, Figure 4As shown, the second embedding portions 210 are spaced apart around the entire circumference of the outer surface 201 of the wire cap 20. For example, the number of the second embedding portions 210 is more than two, and the plurality of second embedding portions 210 are equally spaced around the entire circumference. The first embedding portions 110 and the second embedding portions 210 can be arranged correspondingly.

[0074] In addition, the housing 10 and the lead cap 20 can be fixed together by integral molding, for example, the housing 10 is formed of a metal material, and the lead cap 20 can be integrally molded with the housing 10 by an injection molding process. Therefore, the number of man-hours for assembling the product can be reduced by integrally molding the metal housing and the lead cap, which reduces the product cost and can quickly provide customers with a more cost-effective product.

[0075] In addition, the first fitting portion 110 and the second fitting portion 210 may also be other fitting structures.

[0076] For example, the first engaging portion 110 and the second engaging portion 210 may be a structure in which a spring sheet abuts against a step portion, that is, the first engaging portion 110 may be a spring sheet disposed on the inner surface 101 on one axial side of the housing 10, and the second engaging portion 210 may be a step portion disposed on the outer surface 201 of the wire cap 20 and engaged with the spring sheet; or vice versa.

[0077] For another example, the first embedding portion 110 and the second embedding portion 210 may be mutually mating threads, that is, the first embedding portion 110 is an internal thread formed on the inner surface 101 of the housing 10, and the second embedding portion 210 is an external thread formed on the outer surface 201 of the wire cap 20, and the housing 10 and the wire cap 20 are embedded and fixed by threaded mating.

[0078] In some embodiments, Figure 2 As shown, the wire portion 30 includes a wire 310 and a ring portion 320 fixed to the outer periphery of the wire 310, and the inner wall 202 of the wire cap 20 includes a large diameter portion 220, a step portion 221 and a small diameter portion 222 from the other axial side to the one axial side, and the step portion 221 connects the large diameter portion 220 and the small diameter portion 222.

[0079] The inner diameter of the small diameter portion 222 is larger than the diameter of the wire 310 and smaller than the outer diameter of the ring portion 310. The wire 310 passes through the small diameter portion 222. The ring portion 320 is accommodated in the large diameter portion 220 and abuts against the step portion 221. Thus, the ring portion 320 abuts against the step portion 221 to prevent the wire 310 from being pulled out.

[0080] Figure 5 It is a schematic diagram of the manufacturing process of the sensor of the embodiment of the present application.

[0081] In some embodiments, Figure 1 and Figure 5As shown, the wire cap 20 has a glue injection hole 203 extending along the axial direction for injecting sealant. Figure 5 As shown, the sealant 400 can be injected into the housing 10 through the injection hole 203, so that the interior of the housing 10 is filled with the sealant 400, thereby sealing the sensor 1 to prevent dust and water. On the other hand, the ring portion 320 of the wire portion 30 can be formed by curing the injected sealant, that is, when the wire 310 is inserted from the small diameter portion 222 ( Figure 5 After the wire 310 is passed through the lead cap 20, a sealant is injected and cured to fix the sealant, without forming a ring portion 320 separately.

[0082] In addition, optionally, the ring portion 320 can also be formed separately and then fixed to the wire 310. For example, the ring portion 320 can be a plastic ring structure, which is fixed to the outer periphery of the wire 310 by adhesive or the like after being sleeved on the outer periphery of the wire 310, or fixed to the outer periphery of the wire 310 by hot pressing. In addition, the ring portion 320 can be formed on the outer periphery of the wire 310 by low-pressure injection molding or injection molding, etc., and the embodiment of the present application is not limited to this.

[0083] In some embodiments, Figure 1 As shown, the sensor 1 may also include a sensing part 40, a circuit board 50, etc. In addition, the sensing part may also be sealed by a sensing part filling glue. For example, the sensor 1 may be a proximity sensor. The embodiment of the present application does not limit the type of sensor, and the structure of the corresponding sensing part, circuit board, etc. may be set according to actual needs, and the embodiment of the present application does not limit this.

[0084] in addition, Figures 1 to 5 The cylindrical housing 10 is illustrated as an example, but the embodiment of the present application is not limited thereto. The shape of the housing 10 can be arbitrary, and the embodiment of the present application does not impose any limitation on this.

[0085] In addition, if Figure 2 As shown, the wire 310 of the wire portion 30 is connected to the circuit board 50 through a thinner wire 60, but the embodiment of the present application is not limited thereto, and the wire 310 can also be directly connected to the circuit board 50. In addition, the wire 310 can be a bundle of cables or a single wire, and the embodiment of the present application is not limited thereto.

[0086] According to the sensor described in the embodiment of the present application, through simple structures such as interlocking fixation and abutment, the resistance of the wire when it is pulled can be increased, thereby improving the wire's pulling resistance and reducing dependence on the material of the sealant, the material of the wire cap, and the material of the wire.

[0087] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The sensor of the embodiment of the present application may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

Claims

1. A sensor, characterized in that: The sensor comprises: A housing, wherein an inner surface of one axial side of the housing has a first fitting portion; a wire cap, the wire cap being fixed to an end portion of one axial side of the housing, the outer surface of the wire cap having a second fitting portion fittingly matched with the first fitting portion; and The lead portion passes through the lead cap and abuts against the lead cap in the axial direction.

2. The sensor according to claim 1, characterized in that The first engaging portion includes a convex portion provided on the inner surface of one axial side of the housing, and the second engaging portion includes a concave portion provided on the outer surface of the wire cap and matched with the convex portion; and / or The first fitting portion includes a recessed portion provided on an inner surface of the housing on one axial side, and the second fitting portion includes a protruding portion provided on an outer surface of the wire cap and matched with the recessed portion.

3. The sensor according to claim 2, characterized in that The cross-section shape of the protrusion along the radial direction includes a rectangle, a trapezoid, a semicircle, and a triangle.

4. The sensor according to claim 2, characterized in that The second fitting portion surrounds the entire circumference of the outer surface of the wire cap; or The second engaging portions are distributed at intervals around the entire circumference of the outer surface of the wire cap.

5. The sensor according to claim 1, characterized in that The first engaging portion includes a spring sheet disposed on an inner surface of one axial side of the housing, and the second engaging portion includes a step portion disposed on an outer surface of the wire cap and engaged with the spring sheet; and / or The first engaging portion includes a step portion provided on an inner surface of one axial side of the housing, and the second engaging portion includes a spring piece provided on an outer surface of the wire cap and engaged with the step portion.

6. The sensor according to claim 1, characterized in that The first engaging portion and the second engaging portion are threads that fit together.

7. The sensor according to claim 1, characterized in that The wire portion includes a wire and a ring portion fixed to the outer circumference of the wire, The inner wall of the wire cap includes a large diameter portion, a step portion and a small diameter portion in sequence from the other axial side to the one axial side, wherein the step portion connects the large diameter portion and the small diameter portion. The inner diameter of the small diameter portion is larger than the diameter of the wire and smaller than the outer diameter of the ring portion. The wire passes through the small diameter portion. The ring portion is accommodated in the large diameter portion and abuts against the step portion.

8. The sensor according to claim 7, characterized in that The wire cap has a glue injection hole extending along the axial direction for injecting sealant. The interior of the housing is filled with sealant, and the ring portion is formed by curing the sealant.

9. The sensor according to claim 7, characterized in that The ring portion is fixed to the outer periphery of the wire by bonding or heat-compression bonding; or The ring portion is fixed to the outer circumference of the wire by low-pressure injection molding or injection molding.

10. The sensor according to any one of claims 1 to 9, characterized in that The sensor includes a proximity sensor.

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