Lead anti-loosening structure for sensor and temperature and humidity sensor
By using a limiting post structure to restrict the terminals in the temperature and humidity sensor, the problem of easy wire terminals coming loose is solved, ensuring the stability of the sensor and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUANDONG MAGNETIC ELECTRONICS CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-06-02
Smart Images
Figure CN224317073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor technology, and in particular to a wire anti-loosening structure for sensors and a temperature and humidity sensor. Background Technology
[0002] In many smart home appliances such as refrigerators and air conditioners, various sensors are needed to meet the requirements of intelligent automation, such as temperature and humidity sensors. Typically, temperature and humidity sensors consist of a housing with a PCB board, wires soldered to the PCB board, and then sealed with potting resin. This type of temperature and humidity sensor has the problems of slow production efficiency and long production cycle. Another type of temperature and humidity sensor uses a combination of pin socket and connector, with wires plugged into the connector through terminals. However, in actual use, the terminals are very easy to come off the connector, causing the sensor to malfunction. Therefore, how to prevent the sensor terminals from coming off the connector is a problem that current sensors need to solve. Utility Model Content
[0003] The purpose of this invention is to propose a wire anti-loosening structure for sensors and a temperature and humidity sensor to solve the above-mentioned problems.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] A wire anti-loosening structure for a sensor includes an upper cover, a lower cover, a circuit board, and a wire harness assembly. The upper cover is fixedly installed on the lower cover, and a receiving space is formed between the upper cover and the lower cover. The circuit board is provided with a pin holder, and the circuit board is installed in the receiving space and fixed to the lower cover. The wire harness assembly includes a connector, several wires, and several terminals. The terminals are fixed to one end of the wires, inserted into the connector, and the connector is plugged into the pin holder.
[0006] The lower cover is provided with a cable outlet, and the inner wall of the lower cover is provided with a number of limiting posts. The limiting posts divide the cable outlet into a number of cable outlet slots. The distance between two adjacent limiting posts is less than the outer diameter of the terminal and not less than the outer diameter of the wire. The wire is clamped in the cable outlet slot, and the limiting posts restrict the terminal within the connector.
[0007] Preferably, the top two sides of the limiting post are provided with arc transitions; the bottom surface of the upper cover is offset from the top surface of the limiting post, the upper cover is provided with a pressing plate, and the bottom of the pressing plate presses the circuit board against the lower cover.
[0008] Preferably, limiting protrusions are provided on both sides of the outlet, the limiting protrusions are integral with the inner wall of the lower cover, and the outlet groove is formed between the limiting protrusions and the limiting post.
[0009] Preferably, the limiting post extends into the receiving space, and both the bottom of the limiting post and the bottom of the limiting protrusion are provided with limiting bosses, with the end of the circuit board abutting against the limiting bosses.
[0010] Preferably, the top of the limiting post is flush with the top surface of the lower cover, and the top of the limiting protrusion is flush with the top of the lower cover.
[0011] Preferably, the inner wall of the lower cover is provided with a limiting step, and the upper cover is provided with a limiting perimeter that is inserted and engaged with the limiting step.
[0012] Preferably, the limiting perimeter is provided with a clearance notch corresponding to the outlet.
[0013] Preferably, the lower cover has slots on its opposite inner walls, and the upper cover has buckles that engage with the slots.
[0014] Preferably, the top of the slot is provided with a guide block, and the side wall of the guide block facing the receiving space is inclined; the buckle is provided with a guide inclined surface that cooperates with the guide block.
[0015] A temperature and humidity sensor includes a wire anti-loosening structure as described above.
[0016] One embodiment of this utility model has the following beneficial effects: a plurality of limiting posts are provided in the lower cover. Since the distance between the limiting posts is less than the outer diameter of the terminal, the limiting posts can limit the terminal and confine the terminal inside the connector. When the wire is pulled by an external force, the terminal will be stuck by the limiting posts due to the presence of the limiting posts, so that the terminal can still be kept inside the connector and the wire can still maintain communication with the pin seat when it is pulled. Attached Figure Description
[0017] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.
[0018] Figure 1 This is a three-dimensional structural diagram of one embodiment of the present utility model;
[0019] Figure 2 This is a three-dimensional structural diagram of one embodiment of the present invention after the top cover is hidden;
[0020] Figure 3 This is an exploded structural diagram of the wire harness assembly and circuit board according to one embodiment of the present invention.
[0021] Figure 4 This is a three-dimensional structural diagram of the top cover according to one embodiment of the present utility model;
[0022] Figure 5 This is a three-dimensional structural diagram of the lower cover according to one embodiment of the present utility model;
[0023] Figure 6 This is a cross-sectional structural schematic diagram of one embodiment of the present invention;
[0024] In the attached diagram: 1-Top cover, 11-Pressure plate, 12-Limiting edge, 13-Leaving notch, 14-Snap fastener, 15-Guide slope, 2-Lower cover, 21-Cable outlet, 22-Limiting post, 23-Cable outlet groove, 24-Limiting protrusion, 25-Limiting boss, 26-Limiting step, 27-Card slot, 28-Guide block, 3-Circuit board, 31-Pin socket, 4-Wire harness group, 41-Connector, 42-Wire, 43-Terminal. Detailed Implementation
[0025] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In the description of this 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," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0030] This embodiment provides an anti-loosening structure for the wire 42 of a sensor, such as... Figures 1-6 As shown, the device includes an upper cover 1, a lower cover 2, a circuit board 3, and a wire harness 4. The upper cover 1 is fixedly installed on the lower cover 2, and a receiving space is formed between the upper cover 1 and the lower cover 2. The circuit board 3 is provided with a pin holder 31, and the circuit board 3 is installed in the receiving space and fixed to the lower cover 2. The wire harness 4 includes a connector 41, several wires 42, and several terminals 43. The terminals 43 are fixed to one end of the wires 42, and the terminals 43 are inserted into the connector 41. The connector 41 is connected to the pin holder 31.
[0031] like Figure 2 and Figure 5 As shown, the lower cover 2 is provided with a cable outlet 21, and the inner wall of the lower cover 2 is provided with a plurality of limiting posts 22. The limiting posts 22 divide the cable outlet 21 into a plurality of cable outlet grooves 23. The distance between two adjacent limiting posts 22 is less than the outer diameter of the terminal 43 and not less than the outer diameter of the wire 42. The wire 42 is engaged in the cable outlet groove 23, and the limiting posts 22 restrict the terminal 43 within the connector 41.
[0032] The upper cover 1 and the lower cover 2 form a receiving space for mounting the circuit board 3. The circuit board 3 is installed in this receiving space. The upper cover 1 and the lower cover 2 protect the circuit board 3, preventing it from being directly exposed and preventing components on the circuit board 3 from falling off due to impact or other reasons. Pin holders 31 are soldered onto the circuit board 3 using a surface mount method. Each wire 42 of the wire harness 4 has a terminal 43 of the corresponding specification attached to its end. The terminal 43 is then inserted into the connector 41. The wire harness 4 connects to the connector 41. The pin holder 31 is inserted and engaged, allowing each wire 42 of the wire harness 4 to connect to the circuit board 3. Each wire 42 extends out of the upper cover 1 and lower cover 2 through the outlet 21 to connect to the external circuit. This invention innovatively provides several limiting posts 22 on the lower cover 2. During assembly, the wire harness 4 and circuit board 3 are first fixed by inserting and connecting the connector 41 and pin holder 31. Then, the circuit board 3 is placed inside the lower cover 2, and each wire 42 is respectively secured in the outlet groove 23 between the limiting posts 22. Finally... Install the upper cover 1 onto the lower cover 2. Since the distance between the limiting posts 22 is less than the outer diameter of the terminal 43, the limiting posts 22 can limit the terminal 43, confining the terminal 43 within the connector 41. When the wire 42 is pulled by an external force, the terminal 43 will be stuck by the limiting posts 22 due to their presence, preventing the terminal 43 from moving outward. Thus, the terminal 43 can still remain within the connector 41. It should be noted that since the connection between the terminal 43 and the wire 42 is very firm due to the equipment pressing, the terminal 43 and the wire 42 will basically loosen even under external pulling. The terminal 43 and the connector 41 are fixed by a snap-fit method. Since the connector 41 is made of plastic, the terminal 43 is very easy to come out under external pulling. Therefore, by setting the limiting posts 22 to confine the terminal 43 within the connector 41, this utility model can also ensure that the wire 42 can still maintain communication with the pin seat 31 under pulling.
[0033] Furthermore, the top two sides of the limiting post 22 are provided with arc transitions; such as Figure 6As shown, the bottom surface of the upper cover 1 is offset from the top surface of the limiting post 22. The upper cover 1 is provided with a pressing plate 11, and the bottom of the pressing plate 11 presses the circuit board 3 against the lower cover 2.
[0034] By setting an arc transition at the top of the limiting post 22, the wire 42 can be more easily inserted into the outlet groove 23. During the process of inserting the wire 42 into the outlet groove 23, the arc transition has a guiding effect, allowing the wire 42 to move along the arc transition into the outlet groove 23, making the installation process smoother. In addition, the arc transition can also prevent the insulation of the wire 42 from being scratched during the process of inserting the wire 42 into the outlet groove 23. Since the outer diameter of the wire 42 inevitably has errors during production, for wires 42 with larger dimensions, the insulation of the wire 42 will undergo longitudinal deformation at the groove when the wire 42 is inserted into the outlet groove 23. This utility model adopts a misalignment between the bottom surface of the upper cover 1 and the top surface of the limiting post 22. When the wire 42 is inserted into the outlet groove 23 and undergoes longitudinal deformation, the wire 42 will not hit the bottom surface of the upper cover 1 due to deformation, thereby avoiding the problem that the upper cover 1 and the lower cover 2 cannot be tightly closed due to the outer diameter of the wire 42 being too large.
[0035] Furthermore, such as Figure 5 As shown, limiting protrusions 24 are provided on both sides of the outlet 21. The limiting protrusions 24 and the inner wall of the lower cover 2 are integrally formed. The outlet groove 23 is formed between the limiting protrusions 24 and the limiting post 22.
[0036] The limiting protrusion 24 is integrated with the inner wall of the lower cover 2, so that the inner walls on both sides of the outlet 21 extend into the receiving space, making full use of the space of the outlet 21. The limiting protrusion 24 is the same as the limiting post 22, and both can limit the terminal 43, so that the terminal 43 is limited within the connector 41.
[0037] Furthermore, the limiting post 22 extends into the receiving space, allowing the limiting post 22 to be closer to the connector 41 towards the side wall of the receiving space, thereby better limiting the terminal 43; both the bottom of the limiting post 22 and the bottom of the limiting protrusion 24 are provided with limiting protrusions 25, and the end of the circuit board 3 abuts against the limiting protrusions 25, thereby positioning the circuit board 3 through the limiting protrusions 25, making the positioning error between the circuit board 3 and the limiting post 22 smaller.
[0038] Furthermore, the top of the limiting post 22 is flush with the top surface of the lower cover 2, and the top of the limiting protrusion 24 is flush with the top of the lower cover 2.
[0039] This configuration ensures that after the upper cover 1 is installed on the lower cover 2, the bottom surface of the upper cover 1 is flush with the top of the limiting post 22 and the top surface of the limiting protrusion 24. At this time, the bottom surface of the upper cover 1 can confine the wire 42 in the wire outlet groove 23, preventing the wire 42 from coming out of the wire outlet groove 23.
[0040] Furthermore, the inner wall of the lower cover 2 is provided with a limiting step 26, such as... Figure 4 As shown, the upper cover 1 is provided with a limiting perimeter 12 that is inserted and engaged with the limiting step 26.
[0041] By cooperating with the limiting step 26 and the limiting edge 12, the upper cover 1 and the lower cover 2 can be better positioned. After the upper cover 1 and the lower cover 2 are assembled, the outer walls of the upper cover 1 and the lower cover 2 can be on the same plane, and the gap at the connection between the upper cover 1 and the lower cover 2 is smaller.
[0042] Furthermore, the limiting edge 12 is provided with a clearance notch 13 corresponding to the outlet 21. The clearance notch 13 serves to make way, so that the limiting edge 12 makes room for the outlet 21, so that the wire 42 can extend from the outlet 21.
[0043] Furthermore, such as Figure 4 and 5 As shown, the lower cover 2 has slots 27 on the inner walls of opposite sides, and the upper cover 1 has buckles 14 that engage with the slots 27.
[0044] By setting the buckle 14 to cooperate with the slot 27, the upper cover 1 and the lower cover 2 can be quickly engaged by the buckle 14, so that the upper cover 1 can be firmly installed on the lower cover 2, making the installation process more convenient and improving assembly efficiency.
[0045] Furthermore, the top of the slot 27 is provided with a guide block 28, and the side wall of the guide block 28 facing the receiving space is inclined; the buckle 14 is provided with a guide inclined surface 15 that cooperates with the guide block 28.
[0046] By setting the guide block 28 and the guide slope 15 together, the buckle 14 can be more easily inserted into the slot 27. The slope of the guide block 28 is a slope, which can guide the guide slope 15 of the buckle 14, so that the buckle 14 can deform along the guide block 28 towards the receiving space. When the buckle 14 is installed in place, the buckle 14 returns to its original shape and is snapped into the slot 27.
[0047] A temperature and humidity sensor includes a wire 42 anti-loosening structure as described above.
[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0049] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A wire anti-loosening structure for a sensor, characterized in that, It includes an upper cover, a lower cover, a circuit board, and a wiring harness assembly; the upper cover is fixedly installed on the lower cover, and a receiving space is formed between the upper cover and the lower cover; the circuit board is provided with a pin header, the circuit board is installed in the receiving space, and is fixed to the lower cover; The wire harness assembly includes a connector, several wires, and several terminals. The terminals are fixed to one end of the wires, inserted into the connector, and the connector is connected to the pin socket. The lower cover is provided with a cable outlet, and the inner wall of the lower cover is provided with a number of limiting posts. The limiting posts divide the cable outlet into a number of cable outlet slots. The distance between two adjacent limiting posts is less than the outer diameter of the terminal and not less than the outer diameter of the wire. The wire is clamped in the cable outlet slot, and the limiting posts restrict the terminal within the connector.
2. The wire anti-loosening structure for a sensor according to claim 1, characterized in that, The top two sides of the limiting post are provided with arc transitions; the bottom surface of the upper cover is offset from the top surface of the limiting post, and the upper cover is provided with a pressing plate, the bottom of the pressing plate pressing the circuit board against the lower cover.
3. The wire anti-loosening structure for a sensor according to claim 1, characterized in that, Limiting protrusions are provided on both sides of the outlet. The limiting protrusions are integral with the inner wall of the lower cover. The outlet groove is formed between the limiting protrusions and the limiting post.
4. The wire anti-loosening structure for a sensor according to claim 3, characterized in that, The limiting post extends into the receiving space, and both the bottom of the limiting post and the bottom of the limiting protrusion are provided with limiting bosses, with the end of the circuit board abutting against the limiting bosses.
5. The wire anti-loosening structure for a sensor according to claim 3, characterized in that, The top of the limiting post is flush with the top surface of the lower cover, and the top of the limiting protrusion is flush with the top of the lower cover.
6. The wire anti-loosening structure for a sensor according to claim 1, characterized in that, The inner wall of the lower cover is provided with a limiting step, and the upper cover is provided with a limiting perimeter that is inserted and engaged with the limiting step.
7. The wire anti-loosening structure for a sensor according to claim 6, characterized in that, The limiting perimeter is provided with a clearance notch corresponding to the outlet.
8. The wire anti-loosening structure for a sensor according to claim 1, characterized in that, The lower cover has slots on its opposite inner walls, and the upper cover has buckles that engage with the slots.
9. A wire anti-loosening structure for a sensor according to claim 8, characterized in that, The top of the slot is provided with a guide block, and the side wall of the guide block facing the receiving space is inclined; the buckle is provided with a guide inclined surface that cooperates with the guide block.
10. A temperature and humidity sensor, characterized in that, Including a wire anti-loosening structure for a sensor as described in any one of claims 1-9.