Sensor contact assembly and gas sensor

Abstract

The utility model belongs to sensor technical field, specifically discloses sensor contact subassembly and gas sensor. Among them, sensor contact subassembly includes contact support, and contact support includes installation site, limiting portion and limiting step, and installation site sets up in contact support, and installation site includes entrance and export, and limiting step sets up at export, and limiting portion protrudes towards installation site, and limiting portion extends setting towards limiting step direction, contact terminal is used to install in installation site, and contact terminal includes backplate and sets up on the clamping portion, sensing contact portion and wire connecting portion of backplate, and clamping portion is used for clamping on limiting portion, and abuts against limiting step. The utility model avoids the gap of contact terminal and contact support when connecting through the limiting in X, Y, Z three directions, and guarantees the stability of data transmission.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to sensor contact components and gas sensors. Background Technology

[0002] In existing technologies, the contact terminals and contact brackets inside the gas sensor structure cooperate with each other to limit and prevent detachment. However, there are gaps in the X, Y, and Z axes of the sensor's contact terminals within the contact bracket, which allows the contact terminals to move in multiple directions within the contact bracket. This results in randomness in the position of the contact terminals after assembly, making it easy for them to have poor contact with the sensor's sensing end. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a sensor contact assembly and a gas sensor to solve the problem of installation gaps between the contact terminals and the contact bracket in the X, Y, and Z axes of the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a sensor contact assembly, comprising:

[0005] A contact bracket includes a mounting position, a limiting part, and a limiting step. The mounting position is disposed within the contact bracket and includes an inlet and an outlet. The limiting step is disposed at the outlet. The limiting part protrudes into the mounting position and extends in the direction of the limiting step.

[0006] A contact terminal is used to be installed in the mounting position. The contact terminal includes a back plate and a locking part, a sensing contact part and a wire connection part disposed on the back plate. The locking part is used to abut against the limiting step and is used to engage with the limiting part and have an interference fit with the limiting part.

[0007] Optionally, the limiting portion extends along the direction from the inlet to the outlet onto the limiting step and connects with the limiting step.

[0008] Optionally, the width of the limiting portion gradually increases in the direction toward the mounting position, so that a limiting groove for the engaging portion to engage is formed on the limiting portion.

[0009] Optionally, the backplate includes a first end and a second end, the sensing contact portion is disposed at the first end of the backplate, the wire connection portion is disposed at the second end of the backplate, and the second end of the backplate is used to extend into the mounting position and then extend out from the outlet of the mounting position.

[0010] Optionally, the back plate includes a first surface and a second surface in the thickness direction, and the sensing contact portion and the wire connection portion protrude from the first surface to the second surface.

[0011] Optionally, the engaging portion includes buckles disposed on opposite sides of the back plate, the buckles being bent from the second surface to the first surface, so that a groove is formed between the buckles for the limiting portion to extend into.

[0012] Optionally, the limiting part includes a first limiting surface and a second limiting surface, and the engaging part has a first mating surface and a second mating surface, wherein the first mating surface can be used to fit against the first limiting surface, and the second mating surface can be used to fit against the second limiting surface.

[0013] Optionally, the inner wall of the buckle is provided with an anti-detachment protrusion, which is used to be pressed by the buckle against the outer wall of the limiting part.

[0014] Optionally, the contact bracket has a mounting cavity, the limiting step is disposed in the mounting cavity, and there are multiple mounting positions, which are separated by the limiting step.

[0015] This invention also proposes a sensor that includes the aforementioned sensor contact assembly.

[0016] As described above, the sensor contact assembly and gas sensor proposed in this utility model have the following beneficial effects:

[0017] In this invention, by setting a limiting part on the contact bracket and a locking part on the contact terminal to engage with each other, the limiting part can limit the limiting terminal in the X and Y axis directions. The locking connection method can avoid gaps between the locking part of the contact terminal and the limiting part in the X and Y axis directions, ensuring the stability of the contact terminal connection. At the same time, in the Z axis direction, the bottom surface of the locking part can be limited by the limiting step on the contact bracket, effectively restricting the movement of the contact terminal in the vertical direction. Compared with the prior art, this invention can achieve limiting in the X, Y, and Z axis directions through the contact bracket, avoiding gaps at the connection between the contact terminal and the contact bracket, and ensuring the normal operation of the sensor. Attached Figure Description

[0018] Figure 1 The diagram shows a structural schematic of the connection between the contact bracket and the contact terminal in one embodiment of the present invention.

[0019] Figure 2 The diagram shown is a structural schematic of a contact terminal in one embodiment of the present invention.

[0020] Figure 3The diagram shown is a structural schematic of the contact bracket in one embodiment of the present invention.

[0021] Figure 4 The diagram shows a schematic of the disconnection structure of the contact bracket in one embodiment of the present invention.

[0022] Figure 5 The diagram shows a first cross-sectional view of the connection between the contact bracket and the contact terminal in one embodiment of the present invention.

[0023] Figure 6 The diagram shows a second cross-sectional view of the connection between the contact bracket and the contact terminal in one embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] Specific embodiments include contact terminal 1, back plate 11, first surface 1101, second surface 1102, buckle 12, first mating surface 1201, second mating surface 1202, anti-detachment protrusion 13, slot 14, sensing contact part 15, wire connection part 16, contact bracket 2, limiting part 21, first limiting surface 2101, second limiting surface 2102, limiting step 22, mounting position 23, and mounting cavity 24.

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex. The structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0028] like Figures 1-6 As shown, this utility model proposes a sensor contact assembly and a gas sensor.

[0029] In one exemplary embodiment, the sensor contact assembly includes:

[0030] The contact bracket 2 includes a mounting position 23, a limiting part 21, and a limiting step 22. The mounting position 23 is disposed inside the contact bracket 2 and includes an inlet and an outlet. The limiting step 22 is disposed at the outlet. The limiting part 21 protrudes into the mounting position 23 and extends in the direction of the limiting step 22.

[0031] The contact terminal 1 is used to be installed in the mounting position 23. The contact terminal 1 includes a back plate 11 and a locking part, a sensing contact part 15 and a wire connection part 16 disposed on the back plate 11. The locking part is used to abut against the limiting step 22, and the locking part is used to engage with the limiting part 21 and to have an interference fit with the limiting part 21.

[0032] In this embodiment, the limiting part 21 on the contact bracket 2 engages with the engaging part on the contact terminal 1, allowing the limiting part 21 to limit the terminal in the X and Y axis directions. This prevents gaps from forming between the engaging part of the contact terminal 1 and the limiting part 21 in the X and Y axis directions, ensuring the stability of the contact terminal 1 connection. Simultaneously, in the Z axis direction, the limiting step 22 on the contact bracket 2 can limit the bottom surface of the engaging part, effectively restricting the vertical movement of the contact terminal 1. Compared with the prior art, this invention can achieve limiting in the X, Y, and Z axis directions through the contact bracket 2, preventing gaps from forming at the connection between the contact terminal 1 and the contact bracket 2, and ensuring the normal operation of the sensor.

[0033] For example, in this embodiment, the contact bracket 2 is cylindrical in shape, and the mounting position 23 is located inside the cylindrical contact bracket 2. The number of mounting positions 23 is arranged in pairs, and the contact terminal 1 installed in the mounting position 23 on the opposite side contacts the sensing element on the sensor to transmit data.

[0034] It is worth noting that in this embodiment, the limiting part 21 and the limiting step 22 of the contact bracket 2 are tightly engaged with the engaging part of the contact terminal 1 to ensure that the contact terminal 1 is accurately positioned and firmly fixed in the mounting position 23, preventing poor contact due to positional deviation. At the same time, the engaging part of the contact terminal 1 and the limiting part 21 are connected by an engaging method, which realizes rapid positioning and facilitates the rapid installation of the entire sensor.

[0035] It should also be noted that in this embodiment, during installation, the contact terminal 1 is installed from top to bottom. Specifically, the engaging part of the contact terminal 1 is aligned with the limiting part 21. During the downward movement, the contact terminal 1 enters from the inlet of the mounting position 23 and exits from the outlet. At the same time, the engaging part on the contact terminal 1 engages with the limiting part 21. After the bottom surface of the engaging part contacts the limiting step 22, the installation of the contact terminal 1 is completed.

[0036] In an exemplary embodiment, the limiting part 21 extends along the direction from the inlet to the outlet onto the limiting step 22 and is connected to the limiting step 22.

[0037] In this embodiment, the limiting part 21 extends along the axial direction of the contact bracket 2, extending from the inlet towards the outlet and connecting with the limiting step 22 to form a continuous limiting structure. Specifically, the limiting part 21 extends from the upper end face (i.e., the inlet) of the cylindrical contact bracket 2 towards the limiting step 22 until it contacts the limiting step 22. When the engaging part engages with the limiting part 21, the bottom surface of the engaging part abuts against the limiting step 22, and the top surface of the limiting step 22 limits the engaging part in the +Z direction (i.e., the vertically downward direction). Simultaneously, the cooperation between the limiting part 21 and the limiting step 22 provides clear positioning guidance for the contact terminal 1. During installation, the engaging part of the contact terminal 1 can accurately engage with the limiting part 21 and abut against the limiting step 22, achieving precise positioning and avoiding poor contact problems caused by inaccurate installation position 23.

[0038] For example, in this embodiment, the limiting part 21 and the contact bracket 2 are an integral structure. In this embodiment, the integral structure of the limiting part 21 and the contact bracket 2, and the connection between the limiting part 21 and the limiting step 22, can effectively enhance the structural strength of the limiting part 21. After the contact terminal 1 is engaged, even if it is subjected to external force, the overall structural strength is higher, which improves the stability of the contact bracket 2, thereby firmly fixing the contact terminal 1 in the mounting position 23 through the limiting part 21.

[0039] For example, in this embodiment, a guide slope or guide cone can be designed at the upper end of the limiting part 21 to help the engaging part of the contact terminal 1 enter the mounting position 23 more smoothly and cooperate with the limiting part 21 and the limiting step 22. The guide structure can reduce friction and resistance during the installation process, improve the accuracy and efficiency of installation, and is especially suitable for occasions with limited space or difficult installation operations.

[0040] For example, such as Figure 4 As shown, the width of the limiting part 21 gradually increases in the direction towards the mounting position 23, so that a limiting groove for the engaging part to engage is formed on the limiting part 21. In this embodiment, the limiting part 21 and the inner wall of the contact bracket 2 are connected by an arc-shaped transition to form a limiting groove, so as to facilitate the positioning and guidance of the engaging part and the limiting part 21 during connection.

[0041] It is worth noting that in this embodiment, since the width of the limiting part 21 gradually increases, the engaging part that engages with the limiting part 21 needs to have the same engagement space. Therefore, anti-detachment can be achieved in the X-axis direction (i.e., the width direction of the limiting part 21).

[0042] In an exemplary embodiment, the back plate 11 includes a first end and a second end, a sensing contact portion 15 is disposed at the first end of the back plate 11, and a wire connection portion 16 is disposed at the second end of the back plate 11. The second end of the back plate 11 is used to extend into the mounting position 23 and then extend out from the outlet of the mounting position 23.

[0043] In this embodiment, the first end of the back plate 11 is the upper end and the second end is the lower end. The wire connection part 16 extends from the outlet and is exposed to the contact bracket 2 for connecting wires. The sensing contact part 15 contacts the sensing element of the sensor to transmit data. In this embodiment, the locking part is located between the first end and the second end.

[0044] In a specific embodiment, the back plate 11 includes a first surface 1101 and a second surface 1102 in the thickness direction. The sensing contact portion 15 and the wire connection portion 16 protrude from the first surface 1101 to the second surface 1102. The first surface 1101 is the surface of the back plate 11 facing the limiting portion 21, and the second surface 1102 is the opposite surface of the first surface 1101. The sensing contact portion 15 is formed by bending the first end of the back plate 11 from the first surface 1101 toward the second surface 1102. The specific bending length and bending angle need to be determined based on the relative position of the sensing element and the contact bracket 2 to ensure that the sensing contact portion 15 contacts the sensing element after the contact terminal 1 is installed.

[0045] In one exemplary embodiment, the engaging portion includes latches 12 disposed on opposite sides of the back plate 11. The latches 12 are bent from the second surface 1102 to the first surface 1101, forming a groove 14 between the latches 12 into which the limiting portion 21 extends. Figure 2 As shown, the buckle 12 is a bent plate that is bent and set on the left and right side walls (side walls in the thickness direction) of the back plate 11. The two buckles 12 are symmetrically arranged on the opposite side walls. The bent shape of the buckle 12 is adapted to the side wall of the limiting part 21 so that the inner wall of the buckle 12 fits against the side wall of the limiting part 21. The groove 14 formed between the buckles 12 allows the limiting part 21 to enter the groove 14 for fixation.

[0046] In a specific embodiment, the left and right side walls of the limiting part 21 in the vertical direction (i.e., the Y-axis direction) are the first limiting surface 2101, the end face of the limiting part 21 in the width direction (i.e., the outer end face located in the X-axis direction) is the second limiting surface 2102, the inner wall of the two buckles 12 is the first mating surface 1201, and the surface of the back plate 11 between the two buckles 12 is formed as the second mating surface 1202. When the contact terminal 1 is installed from top to bottom, the limiting part 21 and the engaging part cooperate, wherein the first mating surface 1201 is in contact with the first limiting surface 2101, and the second mating surface 1202 is in contact with the second limiting surface 2102.

[0047] For example, in this embodiment, the inner wall of the buckle 12 is provided with an anti-detachment protrusion 13, which is used to be pressed by the buckle 12 against the outer wall of the limiting part 21. In this embodiment, the anti-detachment protrusion 13 consists of multiple protrusions on the inner wall of the buckle, which protrude toward the first limiting surface 2101. This increases the friction between the buckle and the first limiting surface 2101, enhances the clamping force of the buckle 12, and forms an interference fit to achieve anti-detachment limiting in the -Z axis (vertically upward direction).

[0048] It is worth noting that in this embodiment, the engaging part is formed by the buckles 12 on both sides, and it is a thin sheet that can undergo a certain degree of elastic deformation. In order to ensure the stability of the connection between the limiting part 21 and the engaging part, and to prevent them from loosening or falling out, the space of the slot 14 formed between the buckles 12 is slightly smaller than that of the limiting part 21. When the engaging part enters the mounting position 23 and engages with the limiting part 21, the buckles 12 on both sides will expand slightly. After the engagement is completed, they will tightly hold the limiting part 21, thereby improving the stability of the connection.

[0049] In an exemplary embodiment, the contact bracket 2 is provided with a mounting cavity 24, a limiting step 22 is provided in the mounting cavity 24, and a plurality of mounting positions 23 are provided, which are separated by the limiting step 22.

[0050] In this embodiment, an installation cavity 24 is provided inside the cylindrical contact bracket 2. The installation cavity 24 extends through the contact bracket 2 from top to bottom. A limiting step 22 is located at the bottom of the installation cavity 24. The limiting step 22 is provided with a partition groove corresponding to the installation position 23, thereby dividing the installation cavity 24 into multiple installation positions 23.

[0051] For example, such as Figure 3 In this embodiment, the mounting positions 23 are arranged in pairs, with a total of two pairs. The mounting positions 23 arranged opposite each other correspond to a sensing element, and the sensing contact portions 15 of the two contact terminals 1 are in contact with the sensing element.

[0052] It is worth noting that in this embodiment, the structure of the limiting step 22 can be changed according to the specific structure of the sensor, such as the number of sensing elements and the size of the contact terminal 1, thereby changing the number and position of the mounting positions 23 to adapt to the position of the sensor's sensing element and ensure that the sensing contact portion 15 of the contact terminal 1 can make stable contact with the sensor's sensing element.

[0053] This utility model also proposes a gas sensor, which includes the above-mentioned sensor contact assembly, wherein the sensing element of the sensor extends into the mounting position 23 and contacts the sensing contact portion 15 of the contact terminals 1 on both sides.

[0054] Specific implementation steps:

[0055] When installing the contact terminal 1, install the contact terminal 1 from top to bottom towards the mounting position 23, align the engaging part with the limiting part 21, and make the limiting part 21 engage in the limiting groove. When the limiting part 21 is fully inserted into the limiting groove and the bottom surface of the buckle 12 abuts against the limiting step 22, the first limiting surface 2101 of the limiting part 21 fits against the first mating surface 1201 of the buckle 12, and the second limiting surface 2102 of the limiting part 21 fits against the second mating surface 1202. At the same time, the anti-detachment protrusion 13 is pressed tightly onto the first limiting surface 2101 by the buckle 12, thereby achieving limiting in the X, Y, and Z directions, effectively avoiding gaps between the contact terminal 1 and the limiting part 21, and avoiding poor contact problems caused by inaccurate mounting position 23.

[0056] In summary, this utility model, through the limiting part 21 provided on the contact bracket 2 and the engaging part on the contact terminal 1, can limit the contact terminal 1 in the X and Y directions, and through the limiting step 22 provided, can limit the contact terminal 1 in the Z direction. Therefore, the limiting in three directions avoids gaps when the contact terminal 1 is connected to the contact bracket 2, ensuring the stability of data transmission.

[0057] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sensor contact assembly, characterized by, include: A contact bracket includes a mounting position, a limiting part, and a limiting step. The mounting position is disposed within the contact bracket and includes an inlet and an outlet. The limiting step is disposed at the outlet. The limiting part protrudes into the mounting position and extends in the direction of the limiting step. A contact terminal is used to be installed in the mounting position. The contact terminal includes a back plate and a locking part, a sensing contact part and a wire connection part disposed on the back plate. The locking part is used to abut against the limiting step and is used to engage with the limiting part and have an interference fit with the limiting part.

2. The sensor contact assembly according to claim 1, characterized in that: The limiting part extends along the direction from the inlet to the outlet onto the limiting step and connects with the limiting step.

3. The sensor contact assembly according to claim 2, characterized in that: The width of the limiting part gradually increases in the direction of the mounting position, so that a limiting groove for the engaging part to engage is formed on the limiting part.

4. The sensor contact assembly according to claim 1, characterized in that: The backplate includes a first end and a second end. The sensing contact portion is disposed at the first end of the backplate, and the wire connection portion is disposed at the second end of the backplate. The second end of the backplate is used to extend into the mounting position and then extend out from the outlet of the mounting position.

5. The sensor contact assembly according to claim 1, characterized in that: The backplate includes a first surface and a second surface in the thickness direction, and the sensing contact portion and the wire connection portion protrude from the first surface to the second surface.

6. The sensor contact assembly according to claim 5, characterized in that: The engaging portion includes buckles disposed on opposite sides of the back plate. The buckles are bent from the second surface to the first surface, so that a groove is formed between the buckles for the limiting portion to extend into.

7. The sensor contact assembly according to claim 1, characterized in that: The limiting part includes a first limiting surface and a second limiting surface, and the engaging part has a first mating surface and a second mating surface. The first mating surface can be used to fit with the first limiting surface, and the second mating surface can be used to fit with the second limiting surface.

8. The sensor contact assembly according to claim 6, characterized in that: The inner wall of the buckle is provided with an anti-detachment protrusion, which is used to be pressed by the buckle against the outer wall of the limiting part.

9. The sensor contact assembly according to claim 1, characterized in that: The contact bracket has a mounting cavity, the limiting step is disposed in the mounting cavity, and there are multiple mounting positions, which are separated by the limiting step.

10. A gas sensor, characterized in that: Includes the sensor contact assembly as described in any one of claims 1-9.

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