NTC intelligent sensor with multiple installation structures

Abstract

The invention relates to the technical field of sensors, in particular to an NTC (Negative Temperature Coefficient) intelligent sensor with multiple mounting structures, which comprises a shell and an upper cover, the shell is provided with a shaft hole; the upper cover is arranged at the top of the shell; an NTC sensor is arranged in the shaft hole; an outgoing line of the NTC sensor penetrates through the upper cover; the peripheral wall of the shell is provided with an external thread, and a plurality of accommodating grooves extending in the height direction of the shell are formed in the peripheral direction at intervals; a guide arm is accommodated in each accommodating groove; the top end of each guide arm is hinged with the shell; each guide arm is provided with a sliding groove. A sliding block with a first center hole is arranged in each sliding groove in a sliding mode. A strip-shaped hole extending in the length direction of each guide arm is formed in the inner side wall of the guide arm in a penetrating mode. The positions of the strip-shaped holes correspond to the positions of the corresponding first center holes. Multiple installation modes are integrated to adapt to different installation environments, meanwhile, installation of multiple installation hole pitches can be achieved through sliding of the sliding blocks, the structure is more flexible, and the overall structural size is small.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and in particular to an NTC smart sensor with multiple mounting structures. Background Technology

[0002] NTC smart sensors, with their advantages of high sensitivity, fast response speed, and low power consumption, are widely used in various fields such as home appliances, automotive electronics, industrial control, and smart homes to achieve core functions such as temperature detection and control. In practical application scenarios, the installation environments of different devices vary significantly, posing diverse requirements for sensor installation methods, installation space, and mounting hole spacing: some devices have pre-drilled mounting holes with internal threads, requiring threaded connections for fixation; some devices only have smooth through holes, requiring external support structures to mate with threaded holes on the surface of external mounting parts for fixation; at the same time, there is no unified standard for mounting hole spacing across different devices, requiring sensors to be able to adapt to various hole spacings.

[0003] However, the installation methods of existing NTC smart sensors are relatively simple. Even sensors that integrate multiple installation methods are large in size due to their fixed installation structure, making it difficult to meet the above-mentioned diverse installation needs. This not only increases the difficulty of selection and usage costs for users, but also limits the application of sensors in compact installation environments. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an NTC smart sensor with multiple mounting structures.

[0005] To achieve the above objectives, the specific solution of the present invention is as follows: An NTC smart sensor with multiple mounting structures includes a housing and a top cover; the housing has a shaft hole; the top cover is located on the top of the housing; the NTC sensor is disposed in the shaft hole; the lead wire of the NTC sensor passes through the top cover; The outer peripheral wall of the housing is provided with external threads and multiple receiving grooves extending along the height direction of the housing at intervals along the circumference; each receiving groove is provided with a guide arm; the top end of each guide arm is hinged to the housing; each guide arm is provided with a sliding groove; a slider with a first central hole is slidably disposed in each sliding groove; the inner sidewall of each guide arm is provided with a strip-shaped hole extending along its length direction; the position of the strip-shaped hole corresponds to the position of the corresponding first central hole.

[0006] In some embodiments, spring pieces are provided on both sides of the slider; and the two side walls of the slide groove are provided with inclined grooves whose depth gradually increases from bottom to top. The spring abuts against the bottom surface of the corresponding inclined groove, so that the slider is initially located at the top of the groove.

[0007] In some embodiments, the top of the slider is provided with an extension arm that is eccentrically disposed to the hinge point of the guide arm, and the extension arm is located outside the hinge point of the guide arm. With the spring and the inclined groove engaged, the end of the extension arm abuts against the bottom surface of the upper cover and applies a torque to the guide arm to accommodate it in the receiving groove.

[0008] In some embodiments, limiting grooves are provided on both sides of the slider; the spring sheet is accommodated in the corresponding limiting groove.

[0009] In some embodiments, locking grooves are evenly distributed on both sides of the strip-shaped hole along its length; a locking piece with a second center hole corresponding to the first center hole is movably provided on the outer side of the slider; the locking piece is also provided with a locking arm that movably passes through the slider; the end of the locking arm can engage with the corresponding locking groove to lock the position of the slider.

[0010] In some embodiments, the second central hole has a plurality of tear-shaped elastic claws circumferentially arranged on its hole wall; the elastic claws abut against the outer side wall of the slider, so that the end of the locking arm disengages from the locking groove initially.

[0011] In some embodiments, the number of elastic claws is set to four, and the four elastic claws are arranged in a cross shape.

[0012] In some embodiments, the locking arm is bent into shape on one side of the locking plate.

[0013] In some embodiments, the number of receiving slots is set to three, and the three receiving slots are evenly distributed circumferentially, with their depths extending radially along the shaft hole.

[0014] The beneficial effects of this invention are as follows: By providing external threads and multiple accommodating slots on the outer peripheral wall of the housing, and hinged guide arms in the accommodating slots, a slider with a first central hole is slidably mounted on each guide arm. Thus, when threaded installation is required, threaded connection and installation are achieved through the external threads of the housing. When the external mounting hole is a smooth hole, the guide arm can be swung outward, and then the position of the slider can be adjusted by sliding to make the first central hole of the slider correspond to the position of the external threaded hole, thereby fixing the guide arm and fixing the sensor in the mounting hole. This achieves the integration of multiple installation methods to adapt to different installation environments. At the same time, by using the slider to slide, installation with various mounting hole spacings can be achieved, making the structure more flexible and the overall structure smaller in size. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the NTC smart sensor of the present invention; Figure 2 This is a cross-sectional schematic diagram of the NTC smart sensor of the present invention; Figure 3 This is a three-dimensional structural diagram of the NTC smart sensor of the present invention after the guide arm is opened outward; Figure 4 This is a cross-sectional schematic diagram of the NTC smart sensor of the present invention after the guide arm is opened outward; Figure 5 This is a three-dimensional structural diagram of the guide arm, slider, and locking plate of the present invention. Figure 6 This is a cross-sectional schematic diagram of the guide arm, slider, and locking plate of the present invention. Figure 7 This is a cross-sectional schematic diagram of the guide arm, slider, and locking plate of the present invention engaging with the locking groove; Figure 8 This is a schematic diagram of the guide arm of the present invention; Figure 9 This is a three-dimensional structural diagram of the locking piece of the present invention; Figure 10 This is an application diagram illustrating the two core installation methods of the NTC smart sensor provided by this invention; Figure 11 This is a cross-sectional schematic diagram of the NTC smart sensor of the present invention when the guide arm is in an inclined state; Explanation of reference numerals in the attached drawings: 1. Housing; 11. Shaft hole; 12. External thread; 13. Receiving groove; 2. Top cover; 3. NTC sensor; 31. Lead wire; 4. Guide arm; 41. Slide groove; 42. Strip hole; 43. Inclined groove; 44. Locking groove; 5. Slider; 51. First center hole; 52. Extension arm; 53. Limiting groove; 6. Spring piece; 7. Locking piece; 71. Locking arm; 72. Second center hole; 73. Elastic claw. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the invention to this.

[0017] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0018] It should also be noted that the directional terms such as left, right, up, and down in this embodiment are only relative concepts or are based on the normal use of the product, and should not be considered as restrictive.

[0019] like Figures 1 to 11As shown in the figure, the NTC smart sensor with multiple mounting structures described in this embodiment includes a cylindrical housing 1 and a disc-shaped top cover 2; the housing 1 has an integrally formed cylindrical part and a disc part; wherein the disc part is located at the upper end of the cylindrical part; the top cover 2 is fixed to the top surface of the disc part; The housing 1 has a shaft hole 11 along its axis; an NTC sensor 3 is installed in the shaft hole 11, and the NTC sensor 3 is fitted to the inner wall of the shaft hole 11 to ensure the accuracy of temperature detection; the lead wire 31 of the NTC sensor 3 passes through the upper cover 2 and extends out to achieve a stable electrical connection with the external signal processing module, so as to ensure that the detection signal can be transmitted in real time.

[0020] The outer peripheral wall of the housing 1 is provided with an external thread 12, which is used to fit a mounting hole with an internal thread to achieve threaded installation and fixation. The outer peripheral wall of the housing 1 is also provided with a plurality of receiving grooves 13 extending along the height direction of the housing 1 at intervals along the circumference. The number of receiving grooves 13 can be freely set according to the actual design. The number of receiving grooves 13 can be flexibly set according to the actual installation requirements, such as two, three, four, etc. In this embodiment, it is preferred to set it to three. The three receiving grooves 13 are evenly distributed along the circumference, and their depths extend along the radial direction of the shaft hole 11, which not only ensures the balanced force during installation, but also makes reasonable use of the outer peripheral space of the housing 1.

[0021] Each receiving slot 13 contains a guide arm 4; the top of each guide arm 4 is hinged to the housing 1, so that the guide arm 4 can swing with the hinge point as the fulcrum; each guide arm 4 is provided with a sliding groove 41; a slider 5 is slidably provided in each sliding groove 41; each slider 5 has a through first central hole 51, which is used to insert bolts or screws to fix the guide arm 4 to the external mounting parts; the inner side wall of each guide arm 4 is provided with a strip hole 42 extending along its length; the position of the strip hole 42 corresponds to the position of the corresponding first central hole 51, ensuring that the bolts or screws can pass smoothly through the first central hole 51 and the strip hole 42.

[0022] Specifically, the NTC smart sensor in this embodiment has two core installation methods, and the specific usage process is as follows: like Figure 10 As shown, the first installation method is threaded installation, which is suitable for scenarios where the mounting hole of the external mounting component has an internal thread. In this case, simply align the housing 1 of the NTC smart sensor with the mounting hole of the external mounting component, and screw it in with the external thread 12 on the outer peripheral wall of the housing 1 and the internal thread on the inner wall of the mounting hole. Tighten it until the disc of the housing 1 is in contact with the surface of the external mounting component to complete the fixed installation of the sensor. This installation method is simple to operate and has strong connection stability.

[0023] like Figure 2As shown, the second installation method is guide arm 4 support installation, which is suitable for scenarios where the mounting holes of external mounting parts are smooth holes (without internal threads) and the outer circumference of the mounting holes is provided with threaded holes. First, each guide arm 4 is bent outward, so that the guide arm 4 swings outward with its hinge point at the top as the fulcrum, thereby completely moving out of the receiving groove 13 until the guide arm 4 forms a certain angle with the axis of the housing 1, such as... Figure 11 As shown; then, insert the housing 1 into the smooth mounting hole of the external mounting component, and continue pushing the sensor until the bottom of the guide arm 4 contacts the surface of the external mounting component; next, adjust the position of the slider 5 by sliding along the groove 41 of the guide arm 4 according to the position of the threaded hole on the outer circumference of the external mounting component, so that the first center hole 51 of the slider 5 is precisely aligned with the external threaded hole; finally, pass the bolt or screw through the first center hole 51 of the slider 5 and the strip hole 42 of the guide arm 4 in sequence, and screw them into the threaded hole of the external mounting component to fix the guide arm 4 to the external mounting component, thereby completing the installation of the sensor. Since the slider 5 can slide freely along the groove 41, the position of the first center hole 51 can be flexibly adjusted, thereby adapting to various mounting hole positions with different spacings and improving the versatility of the sensor.

[0024] This embodiment features an external thread 12 on the outer peripheral wall of the housing 1 and multiple accommodating slots. A guide arm 4 is hinged to the accommodating slot 13. A slider 5 with a first central hole 51 is slidably mounted on each guide arm 4. When threaded installation is required, threaded connection is achieved through the external thread 12 of the housing 1. When the external mounting hole is a smooth hole, the guide arm 4 can be swung outward, and the position of the slider 5 can be adjusted by sliding to align the first central hole 51 of the slider 5 with the position of the external threaded hole, thereby fixing the guide arm 4 and fixing the sensor in the mounting hole. This integrates multiple installation methods to adapt to different installation environments. At the same time, by using the slider 5 to slide, installation with various mounting hole spacings can be achieved, making the structure more flexible and the overall structure smaller in size.

[0025] like Figure 6 As shown, in some embodiments of the NTC smart sensor with multiple mounting structures, the slider 5 is provided with spring pieces 6 on both sides; the two side walls of the slide groove 41 are provided with inclined grooves 43 whose depth gradually increases from bottom to top; the spring pieces 6 abut against the bottom surface of the corresponding inclined grooves 43. With this arrangement, the elastic force of the spring pieces 6 and the inclined guiding effect of the inclined surface of the grooves 43 are used to form an upward resultant force, so that the slider 5 can be stably maintained at the top position of the slide groove 41 when it is not subjected to external force, which is convenient for initial storage and subsequent position adjustment.

[0026] like Figures 2 to 7As shown, in some embodiments of the NTC smart sensor with multiple mounting structures, the top end of the slider 5 is integrally provided with an extension arm 52. The hinge point of the extension arm 52 and the guide arm 4 is eccentrically set, and the extension arm 52 is located outside the hinge point of the guide arm 4. Under the cooperation of the spring piece 6 and the inclined groove 43, when the slider 5 is held at the top end of the groove 41, the end of the extension arm 52 is tightly abutted against the bottom surface of the upper cover 2. The extension arm 52 applies a torque toward the inside of the receiving groove 13 to the guide arm 4, so that the guide arm 4 can be stably housed in the receiving groove 13 when it is not bent by external force, avoiding the guide arm 4 from swinging randomly during transportation or when not in use, and reducing the overall volume of the sensor.

[0027] When the mounting holes of the external mounting parts are smooth holes, by bending each guide arm 4 outward, the guide arm 4 swings outward with its hinge point at the top as the fulcrum, thus completely moving out of the receiving groove 13 until the extension arm 52 abuts against the right-angle apex position between the bottom surface of the upper cover 2 and the bottom surface of the slide groove 41, such as Figure 11 As shown, the guide arm 4 is kept in an inclined state under the constraint of the extension arm 52 and the top corner, so that the housing 1 can be inserted into the smooth mounting hole of the external mounting part. Continue to push the sensor until the bottom of the guide arm 4 contacts the surface of the external mounting part. During the outward swing of the guide arm 4, the housing 1 squeezes the slider 5 through the extension arm 52, so that the slider 5 slides, so that the position of the slider 5 can be adjusted later. Then, according to the position of the threaded hole on the outer periphery of the external mounting part, the position of the slider 5 is adjusted by sliding along the slide groove 41 of the guide arm 4, so that the first center hole 51 of the slider 5 is precisely aligned with the external threaded hole. Finally, the bolt or screw is passed through the first center hole 51 of the slider 5 and the strip hole 42 of the guide arm 4 in sequence, and screwed into the threaded hole of the external mounting part to fix the guide arm 4 to the external mounting part, thus completing the installation of the sensor.

[0028] like Figure 6 As shown, in some embodiments of the NTC smart sensor with multiple mounting structures, the slider 5 has limiting grooves 53 on both sides; the spring piece 6 is accommodated in the corresponding limiting groove 53. In this way, the limiting groove 53 positions and fixes the spring piece 6, preventing the spring piece 6 from shifting or falling off during the sliding of the slider 5, and ensuring the stability of the fit between the spring piece 6 and the inclined groove 43.

[0029] like Figures 5 to 8As shown, in some embodiments of the NTC smart sensor with multiple mounting structures, locking grooves 44 are evenly distributed along the length direction on both sides of the strip hole 42; a locking piece 7 with a second center hole 72 corresponding to the first center hole 51 is movably provided on the outer side of the slider 5; the locking piece 7 is also provided with a locking arm 71 that movably passes through the slider 5; the end of the locking arm 71 can engage with the corresponding locking groove 44 to lock the position of the slider 5. Specifically, after the slider 5 is adjusted to the target position, press the locking plate 7, causing the locking plate 7 to move the locking arm 71 towards the strip hole 42 until the end of the locking arm 71 is embedded in the corresponding locking groove 44, thereby locking and clamping the locking arm 71 and the locking groove 44, thus locking and fixing the position of the slider 5, preventing the slider 5 from shifting during the use of the sensor, and ensuring installation stability. Then, the bolt or screw is passed through the second center hole 72, the first center hole 51, and the strip hole 42 in sequence and connected to the external threaded hole, thereby fixing the guide arm 4 to the external mounting part. When it is necessary to adjust the position of the slider 5 again, the locking plate 7 is turned in the opposite direction to disengage the locking arm 71 from the locking groove 44.

[0030] like Figure 5 and Figure 9 As shown, in some embodiments of the NTC smart sensor with multiple mounting structures, the second central hole 72 has multiple tear-shaped elastic claws 73 circumferentially arranged on the hole wall; the elastic claws 73 are inclined, and their free ends abut against the outer side wall of the slider 5. With this arrangement, the elastic force of the elastic claws 73 applies a pushing force away from the slider 5 to the locking plate 7, so that the locking plate 7 can maintain its initial position when it is not subjected to external pressing force, thereby allowing the end of the locking arm 71 to naturally disengage from the locking groove 44, ensuring that the slider 5 can slide and adjust freely.

[0031] like Figure 9 As shown, in some embodiments of this embodiment, the NTC smart sensor with multiple mounting structures has four elastic claws 73 arranged in a cross shape. This arrangement ensures that the elastic force on the locking plate 7 is balanced, guaranteeing the smoothness of the locking plate 7's movement, while also improving the overall elastic support effect of the elastic claws 73 and extending their service life.

[0032] like Figure 9 As shown, in some embodiments of this embodiment, the NTC smart sensor with multiple mounting structures has the locking arm 71 bent from one side of the locking piece 7. Through this arrangement, the connection strength between the locking arm 71 and the locking piece 7 can be guaranteed, while also making the structure of the locking arm 71 more compact and adaptable to the mounting space of the slider 5.

[0033] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included within the protection scope of this patent application.

Claims

1. An NTC smart sensor with multiple mounting structures, characterized in that, It includes a housing and a top cover; the housing has a shaft hole; the top cover is located on the top of the housing; an NTC sensor is installed in the shaft hole; the lead wire of the NTC sensor passes through the top cover; The outer peripheral wall of the housing is provided with external threads and multiple receiving grooves extending along the height direction of the housing at intervals along the circumference; each receiving groove is provided with a guide arm; the top end of each guide arm is hinged to the housing; each guide arm is provided with a sliding groove; a slider with a first central hole is slidably disposed in each sliding groove; the inner sidewall of each guide arm is provided with a strip-shaped hole extending along its length direction; the position of the strip-shaped hole corresponds to the position of the corresponding first central hole.

2. The NTC smart sensor with multiple mounting structures according to claim 1, characterized in that, Both sides of the slider are provided with spring pieces; both sides of the slide groove are provided with inclined grooves whose depth gradually increases from bottom to top. The spring abuts against the bottom surface of the corresponding inclined groove, so that the slider is initially located at the top of the groove.

3. The NTC smart sensor with multiple mounting structures according to claim 2, characterized in that, The top of the slider is provided with an extension arm that is eccentrically positioned to the hinge point of the guide arm, and the extension arm is located outside the hinge point of the guide arm. With the spring and the inclined groove engaged, the end of the extension arm abuts against the bottom surface of the upper cover and applies a torque to the guide arm to accommodate it in the receiving groove.

4. An NTC smart sensor with multiple mounting structures according to claim 2, characterized in that, The slider has limiting grooves on both sides; the spring piece is accommodated in the corresponding limiting groove.

5. An NTC smart sensor with multiple mounting structures according to claim 1, characterized in that, Both sides of the strip-shaped hole are evenly distributed with locking grooves along its length; a locking piece with a second center hole corresponding to the first center hole is movably provided on the outer side of the slider; the locking piece is also provided with a locking arm that movably passes through the slider; the end of the locking arm can engage with the corresponding locking groove to lock the position of the slider.

6. An NTC smart sensor with multiple mounting structures according to claim 5, characterized in that, The second central hole has multiple tear-shaped elastic claws along its circumferential direction on its hole wall; the elastic claws abut against the outer side wall of the slider, so that the end of the locking arm disengages from the locking groove initially.

7. An NTC smart sensor with multiple mounting structures according to claim 6, characterized in that, The number of elastic claws is set to four, and the four elastic claws are distributed in a cross shape.

8. An NTC smart sensor with multiple mounting structures according to claim 5, characterized in that, The locking arm is bent into shape from one side of the locking plate.

9. An NTC smart sensor with multiple mounting structures according to any one of claims 1 to 8, characterized in that, The number of receiving grooves is set to three, and the three receiving grooves are evenly distributed circumferentially, with their depths extending radially along the shaft hole.

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