Packaging structure of temperature sensor

Abstract

The utility model discloses a packaging structure of a temperature sensor. The packaging structure comprises a bottom shell, a surface cover, a first metal terminal, a second metal terminal, a first locking bolt, a second locking bolt and a connector, the side end of the bottom shell is provided with an accommodating cavity, each of the first metal terminal and the second metal terminal comprises an inserting part and a tabletting part which are integrally formed, the tabletting parts are positioned in the tabletting cavities and are connected with the connector through metal wires, and an epoxy resin layer is filled between the surface cover and the bottom shell. According to the utility model, the accommodating cavity in the bottom shell is divided into the two pressing sheet cavities through the partition plate, so that the pressing sheet parts of the first metal terminal and the second metal terminal are respectively limited, and double fixation of the terminals is realized through the vertical pressing force of the first locking bolt, and displacement or poor contact is prevented; and the surface cover is pre-pressed through the second locking bolt, and the epoxy resin layer is filled and cured under continuous pressing force to form a gapless sealing layer, so that the sealing performance and the structural strength are improved, and the service life of the product is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature sensor field especially relates to a packaging structure of temperature sensor. BACKGROUND

[0002] Temperature sensor is applied to industry, domestic and other fields a kind of temperature measuring element, usually utilize thermocouple, thermistor or platinum resistance element to obtain the temperature signal of measured environment.

[0003] In prior art, the packaging structure of traditional temperature sensor is protected by simple shell or sealing glue, although isolation can be realized to a certain extent, but in long-term use process, shell connecting place often suffers from thermal expansion and contraction effect and produces gap, thereby leading to water vapor penetration erosion internal circuit, influence temperature sensor's detection accuracy and service life;In addition, traditional temperature sensor is prone to positioning inaccuracy, component loosening or poor contact during packaging process, not only influence assembly efficiency, also can influence product structural stability and use performance.

[0004] Therefore, prior art has defects, and needs improvement. INVENTION CONTENTS

[0005] The utility model solves the technical problems that provide a packaging structure of temperature sensor, easy to assemble, structural stability, effectively improve product service life.

[0006] To achieve this purpose, the utility model adopts the following technical scheme: a packaging structure of temperature sensor, including bottom shell, face cover, first metal terminal, second metal terminal, first locking bolt, second locking bolt and connector;

[0007] The bottom shell side end has accommodating cavity, and the accommodating cavity is provided with a partition plate, the partition plate is used for separating the accommodating cavity to form two tablet chambers, and the tablet chambers are communicated with the outside through the insertion hole;

[0008] The first metal terminal and the second metal terminal are the same structure, and both include integrally-formed plug-in part and tablet part, the tablet part is located in the tablet chamber, the plug-in part passes through the insertion hole and leads to the outside, and the first locking bolt passes through the tablet part and is connected with the bottom shell;

[0009] The bottom shell is provided with first positioning slot, the connector bottom is located in the first positioning slot, and the tablet part is connected with the connector through metal wire;

[0010] The face cover is arranged on the bottom shell, the second locking bolt passes through the face cover and is connected with the bottom shell, and the face cover and the bottom shell are filled with epoxy resin layer.

[0011] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0012] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0013] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0014] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0015] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0016] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0017] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0018] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0019] According to the technical scheme, the packaging structure of the temperature sensor, the first metal terminal and the second metal terminal further comprise a bending part, the bending part is arranged between the plug-in part and the pressing part, and the bending part is used for clamping the bottom of the insertion hole.

[0020] Compared with the prior art, the temperature sensor packaging structure has the following beneficial effects:

[0021] The utility model discloses a bottom shell's containing cavity is divided into two independent tableting chambers through the partition plate, and the tableting part of first metal terminal and second metal terminal can be limited in respective tableting chamber, and the circumferential constraint of tableting chamber wall surface to tableting part and the vertical pressure of first locking bolt are utilized, realize the double mechanical fixation of terminal, effectively prevent the horizontal displacement or contact of terminal to be bad, the first positioning slot of bottom shell can be positioned connector bottom, make the metal wire keep the position stability of connector when welding, avoid the virtual welding, the face cover is pre-pressing with bottom shell after through second locking bolt, and epoxy resin fills solidification under the continuous pressure of bolt, forms the sealed layer of no gap, thereby blocks the penetration of water vapor and dust inside, thereby improves the sealing performance and overall strength of product package, prolongs the service life of temperature sensor. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0023] The structure, proportion, size etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions that can be implemented by the utility model, so they do not have technical substantial significance, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect and purpose that can be produced by the utility model, should still fall within the scope covered by the technical content disclosed by the utility model.

[0024] Figure 1 It is the overall structure schematic diagram of the utility model;

[0025] Figure 2 It is the bottom structure structure schematic diagram of the utility model;

[0026] Figure 3 It is the explosion structure schematic diagram of the utility model;

[0027] Figure 4 It is the bottom shell internal assembly structure schematic diagram of the utility model;

[0028] Figure 5 It is the face cover bottom structure schematic diagram of the utility model;

[0029] Figure 6 It is the first metal terminal structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0030] In order to make the utility model's utility new type purpose, characteristic, advantage can be more obvious and easy to understand, the following will combine the drawings in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, the following described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor are within the scope of the utility model protection.

[0031] In the description of the utility model, it is understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0032] The technical scheme of the utility model will be further illustrated below by specific embodiments in conjunction with the drawings.

[0033] As Figures 1 to 6The utility model discloses a kind of packaging structures of temperature sensor, including bottom shell 1, face cover 2, first metal terminal 3, second metal terminal 4, first locking bolt 5, second locking bolt 6 and connector 7;The bottom shell 1 side end has accommodating cavity 10, the accommodating cavity 10 is equipped with partition plate 11, the partition plate 11 is used to separate the accommodating cavity 10 and form two tabletting chambers 100, the tabletting chamber 100 is communicated with outside by jack, the first metal terminal 3 and the second metal terminal 4 structure are same, and all include integrally formed plug-in part 31 and tabletting part 32, the tabletting part 32 is located in the tabletting chamber 100, the plug-in part 31 passes through the jack and leads to outside, the first locking bolt 5 passes through the tabletting part 32 and is connected with the bottom shell 1;Accommodating cavity 10 of bottom shell 1 is divided into two independent tabletting chambers 100 by partition plate 11, so that the tabletting part 32 of first metal terminal 3, second metal terminal 4 is respectively limited in tabletting chamber 100, and the tabletting chamber 100 can be limited by circumferential direction of chamber wall surface to tabletting part 32, avoid terminal to occur lateral deviation by external force or vibration;First locking bolt 5 passes through tabletting part 32 along vertical direction and is threadedly connected with bottom shell 1, and the tabletting part 32 is tightly attached to the bottom of tabletting chamber 100 by the pressing force generated by bolt screwing, to realize the radial clamping of tabletting part 32, realize double fixing, ensure the installation structure stability between terminal and bottom shell 1;The setting of partition plate 11 can separate two tabletting chambers 100, to avoid short circuit between different terminals.

[0034] The bottom shell 1 is equipped with first positioning groove 101, the bottom of connector 7 is located in the first positioning groove 101, and the tabletting part 32 is connected with the connector 7 by metal wire;The first positioning groove 101 is arranged on the bottom shell 1, so that the bottom of the connector 7 can be embedded in the first positioning groove 101, to avoid misplacement of the connector 7, so that it is closely attached to the bottom shell 1, and to avoid virtual welding caused by shaking of the connector 7 when the metal wire is welded with the connector 7, thereby improving the stability of assembly.

[0035] The face cover 2 is arranged on the bottom shell 1, the second locking bolt 6 passes through the face cover 2 and is connected with the bottom shell 1, and an epoxy resin layer (not shown) is filled between the face cover 2 and the bottom shell 1.In the packaging process, first fill the epoxy resin layer between the face cover 2 and the bottom shell 1, and then firmly press the face cover 2 to the bottom shell 1 by the second locking bolt 6, which can keep the face cover 2 and the bottom shell 1 closely attached during resin curing by the pressing force of the second locking bolt 6, so as to form a complete packaging layer after curing, blocking the intrusion of external water vapor and dust;On the other hand, the resin can be cured under stress, which can form a more firm bonding effect, thereby improving the sealing performance and overall strength of product packaging, prolonging the service life of the temperature sensor.

[0036] As shown in Figure 6 Further, the first metal terminal 3 and the second metal terminal 4 further comprise a bending portion 33, which is arranged between the plug-in portion 31 and the pressing portion 32, and is used for clamping the bottom of the jack, thereby improving the stability of the assembly structure of the terminal and avoiding displacement or shaking of the terminal.

[0037] As shown in Figure 3 and Figure 5 Further, the bottom of the face cover 2 is provided with a second positioning groove 201, and the top of the connector 7 is located in the second positioning groove 201. When the bottom of the connector 7 is attached to the first positioning groove 101 on the bottom shell 1, the top thereof can also be embedded in the second positioning groove 201 at the bottom of the face cover 2, thereby forming a bidirectional clamping effect on the connector 7 at the upper and lower ends, and avoiding shaking or mispositioning of the connector 7.

[0038] As shown in Figure 3 Further, the bottom shell 1 is provided with a first wedge-shaped slope 12 on both sides, and the bottom of the face cover 2 is provided with a second wedge-shaped slope 21 on both sides, and the first wedge-shaped slope 12 is in wedge abutment with the first wedge-shaped slope 12. When the face cover 2 is buckled to the bottom shell 1, the second wedge-shaped slope 21 slides along the first wedge-shaped slope 12 to automatically correct the face cover 2 to a horizontal position through the interaction force between the slopes, reduce the assembly deviation, and realize self-locking through the extrusion force of the second locking bolt 6, thereby enhancing the connection strength between the face cover 2 and the bottom shell 1.

[0039] As shown in Figure 4 Further, a pressing pad 8 is further included, which is arranged between the first locking bolt 5 and the pressing portion 32. The arrangement of the pressing pad 8 can play a buffering role during the tightening process, reduce the deformation or bending of the pressing portion 32 caused by the extrusion of the first locking bolt 5 during the tightening process, and avoid the structure damage of the pressing portion 32 caused by the signal fluctuation or resistance change.

[0040] As shown in Figure 3 Further, the face cover 2 is provided with an avoiding groove 202 for avoiding the partition plate 11. When the bottom shell 1 is aligned with the face cover 2, the partition plate 11 can be accurately embedded along the guiding action of the avoiding groove 202, thereby providing positioning action for the face cover 2 and improving the assembly efficiency.

[0041] Further, the bottom shell 1 and the face cover 2 are both made of plastic material.

[0042] As shown in Figure 1 and Figure 2As shown, further, the side wall of the bottom shell 1 and the face cover 2 is provided with a rib structure 103. The rib structure 103 can play a role of framework support during the epoxy resin layer pouring process, avoid the liquid resin from generating lateral pressure on the shell when flowing, and effectively prevent the deformation of the thin-walled area.

[0043] As shown in the drawings, Figure 2 As shown, further, the bottom shell 1 is provided with a waist-shaped clamping groove 13 at the bottom, which can be positioned and clamped with the mounting base, thereby improving the installation efficiency of the temperature sensor.

[0044] Further, the first metal terminal 3 is made of nickel-chromium alloy, and the second metal terminal 4 is made of nickel-aluminum alloy. The nickel-chromium alloy has high resistivity and excellent oxidation resistance, can stably output the thermoelectric potential signal when used as the first metal terminal 3, and keep the electrical performance stable in a high-temperature environment; the nickel-aluminum alloy has good conductivity and corrosion resistance, can effectively reduce the contact resistance when used as the second metal terminal 4, and form a stable thermocouple pairing with the nickel-chromium alloy, thereby improving the accuracy of temperature measurement.

[0045] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A packaging structure of a temperature sensor, characterized by, The application relates to a connector comprising a bottom shell, a cover, a first metal terminal, a second metal terminal, a first locking bolt, a second locking bolt and a connector; The bottom shell side end is provided with a containing cavity, and a partition plate is arranged on the containing cavity, which is used for separating the containing cavity into two tablet pressing chambers which are communicated with the outside through insertion holes; The first metal terminal and the second metal terminal are structurally identical and each comprise an integrally-formed insertion part and a tablet pressing part, the tablet pressing part is located in the tablet pressing chamber, the insertion part passes through the insertion hole and leads to the outside, the first locking bolt passes through the tablet pressing part and is connected with the bottom shell; The bottom shell is provided with a first positioning groove, the connector bottom is located in the first positioning groove, and the tablet pressing part is connected with the connector through metal wires; The cover is arranged on the bottom shell, the second locking bolt passes through the cover and is connected with the bottom shell, and an epoxy resin layer is filled between the cover and the bottom shell.

2. The packaging structure of a temperature sensor according to claim 1, wherein The first metal terminal and the second metal terminal further comprise a bending part arranged between the insertion part and the tablet pressing part, and the bending part is used for clamping the bottom of the insertion hole.

3. The temperature sensor packaging structure according to claim 1, wherein The bottom of the cover is provided with a second positioning groove, and the top of the connector is located in the second positioning groove.

4. The temperature sensor packaging structure according to claim 1, wherein The bottom shell is provided with first wedge-shaped inclined surfaces on both sides, the bottom of the cover is provided with second wedge-shaped inclined surfaces on both sides, and the first wedge-shaped inclined surfaces are wedged against the second wedge-shaped inclined surfaces.

5. The temperature sensor packaging structure according to claim 1, wherein The application further comprises a pressing pad arranged between the first locking bolt and the tablet pressing part.

6. The temperature sensor packaging structure according to claim 1, wherein The cover is provided with an avoiding groove for avoiding the partition plate.

7. The temperature sensor package structure of claim 1, wherein The bottom shell and the cover are made of plastic materials.

8. The packaging structure of a temperature sensor according to claim 7, wherein Rib structures are arranged on the side walls of the bottom shell and the cover.

9. The temperature sensor package structure of claim 1, wherein, The bottom of the bottom shell is provided with a waist-shaped clamping groove.

10. The temperature sensor package structure according to any one of claims 1 to 9, wherein The first metal terminal is made of nickel-chromium alloy, and the second metal terminal is made of nickel-aluminum alloy.

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