control switch

Abstract

The application relates to a control switch, which comprises an upper shell provided with an upper connecting column on the inner side, a lower shell buckled with the upper shell, and a lower connecting column matched with the upper connecting column provided on the inner side of the lower shell; when the upper shell and the lower shell are fixed in alignment, the upper connecting column is arranged in the lower connecting column, and a containing space is formed between the upper shell and the lower shell; a circuit board is arranged in the containing space, and a key and a wire harness assembly are electrically connected to the circuit board. The upper connecting column is arranged on the inner side of the upper shell, the lower connecting column matched with the upper connecting column is correspondingly arranged on the inner side of the lower shell, and the close connection of the upper shell and the lower shell is realized based on the interference fit of the upper connecting column and the lower connecting column, so that the problems of complex assembly, damage to the shell integrity and relatively time-consuming caused by the screw or glue fixation are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a control switch. Background Technology

[0002] Most control switches on the market typically use screws, adhesive, or clips to fasten their housings. Screw fastening requires drilling holes in the switch housing surface to allow the screws to pass through. This means screw fastening damages the housing surface, and the added screws increase the overall weight of the product. Adhesive fastening requires curing time, which impacts production efficiency and makes adjustments difficult if misalignment occurs during curing. Furthermore, controlling the amount of adhesive used is challenging in actual switch production, and using precision dispensing machines increases costs. Additionally, adhesive's high fluidity can lead to overflow during processing, and as a common chemical substance, it often poses toxic or harmful risks. Moreover, if an internal switch malfunctions after adhesive fastening, maintenance or parts replacement is difficult without damaging the housing; forced disassembly may damage the housing or internal circuitry, increasing maintenance costs and complexity. While snap-fit ​​connections can also secure the switch housing, they are prone to loosening and instability. Solving this problem requires adding springs or other components, which is quite complicated. Utility Model Content

[0003] In view of this, the main objective of this utility model is to provide a control switch that, by setting an upper connecting post and a matching lower connecting post, achieves the clamping and fixing of the upper and lower housings, effectively solving the problems of damage to the integrity of the switch housing and the cumbersome assembly process caused by the use of screws, glue or simple snap-fit ​​fixing in existing control switches.

[0004] This application provides a control switch, including:

[0005] The upper housing has an upper connecting post on its inner side;

[0006] The lower housing is snapped together with the upper housing, and the inner side of the lower housing is provided with a lower connecting post that matches the upper connecting post; when the upper housing and the lower housing are aligned and fixed, the upper connecting post passes through the lower connecting post, and an accommodating space is formed between the upper housing and the lower housing.

[0007] A circuit board is disposed within the accommodating space, and buttons and wiring harness assemblies are electrically connected to the circuit board.

[0008] In some embodiments, the upper housing is provided with an annular groove on the side near the lower housing;

[0009] The lower housing is provided with an annular boss that matches the annular groove.

[0010] In some embodiments, one end of the upper connecting post extends out of the upper housing, and one end of the lower connecting post extends out of the lower housing.

[0011] In some embodiments, the number of the upper connecting posts is at least one; and

[0012] When there are four upper connecting posts, the four upper connecting posts are arranged opposite each other at the four corners of the upper housing; and the distance between two upper connecting posts on one side of the upper housing is greater than the distance between two upper connecting posts on the other side.

[0013] In some embodiments, the circuit board is a single-sided board, and a wire harness connector is provided in the middle of the circuit board;

[0014] The wire harness connector is snapped into place at one end of the wire harness assembly.

[0015] In some embodiments, the number of buttons is multiple;

[0016] When the number of buttons is four, the four buttons are arranged in a matrix on the circuit board.

[0017] In some embodiments, the wire harness assembly includes:

[0018] A snap-fit ​​connector is snapped into and fixed to the wire harness connector.

[0019] The wire harness assembly has one end inserted into the snap-fit ​​member and the other end extending out of the upper housing and the lower housing;

[0020] A fastener is fitted onto the wire harness assembly, and the fastener is snapped into a slot opened on one side of the upper housing and the lower housing extending out of the wire harness assembly.

[0021] In some embodiments, the fastener is provided with a circumferential limiting groove;

[0022] The circumferential limiting groove is engaged with the corresponding side walls of the upper housing and the lower housing.

[0023] In some embodiments, it also includes:

[0024] A key cover plate is installed over the circuit board; and

[0025] The button cover has a protrusion at the button position, an opening at one end of the button cover opposite the wire harness assembly, and retrieval grooves on both sides of the button cover.

[0026] In some embodiments, the button cover is made of rubber and is a one-piece molded structure.

[0027] Technical effects of this utility model:

[0028] This application achieves a tight connection between the upper and lower housings by setting an upper connecting post on the inner side of the upper housing and a corresponding lower connecting post on the inner side of the lower housing, based on the interference fit between the upper and lower connecting posts. When the upper and lower connecting posts are aligned and fixed, the upper connecting post passes through the lower connecting post, and a space is formed between the upper and lower housings to accommodate various components. The circuit board is placed within this space, and buttons and wiring harnesses are electrically connected to the circuit board. In other words, this application achieves a tight-fitting fixation of the housing by using matching upper and lower connecting posts without compromising the integrity of the control switch housing; that is, the outer surface is intact and without holes. Furthermore, the fixed housing can be flexibly disassembled according to actual needs, allowing for timely maintenance of internal circuit boards and other components in case of internal faults in the control switch. Moreover, the interference fit of the upper and lower connecting posts allows for immediate fixation of the housing without waiting, simplifying installation, saving assembly time, and effectively improving production efficiency.

[0029] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0031] Figure 1 The diagram shown is an exploded view of the control switch according to an embodiment of this application.

[0032] Figure 2 The diagram shows the overall structure of the control switch according to an embodiment of this application;

[0033] Figure 3 The diagram shown is a structural schematic of the upper and lower housings and wiring harness assembly in the control switch according to an embodiment of this application.

[0034] Figure 4 The diagram shows a schematic representation of the upper housing of a control switch according to an embodiment of this application. Detailed Implementation

[0035] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0036] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0037] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0038] For control switches, the method of fixing the housing directly affects the production efficiency and subsequent maintenance of the finished product. Currently, common fixing methods on the market include screw fixing, glue fixing, or snap-fit ​​fixing. While these methods achieve a fixing effect, they have many drawbacks. Screw fixing is not only relatively time-consuming but also adds extra parts. Furthermore, screw fixing requires drilling holes in the housing, which not only damages the integrity of the housing but also allows dust to accumulate at the screw-hole connection point after a period of use. Glue fixing requires waiting for the glue to cure, and it is difficult to open the housing again after fixing, resulting in high maintenance costs if internal faults occur. Moreover, the adhesive strength of the glue decreases over time, causing the housing to loosen and affecting product reliability. Additionally, controlling the amount of glue used for fixing the housing is difficult. While precision dispensing machines can solve this problem, their cost is relatively high. Furthermore, glue has good fluidity, which can easily lead to glue overflow during the actual manufacturing of control switches. As a chemical substance, glue is often toxic and harmful, easily causing environmental pollution. The housing of the control switch, which is fixed by a snap-fit ​​connection, is prone to loosening and instability during use. To solve this problem, springs and other parts are usually added, which is relatively cumbersome.

[0039] Therefore, in order to solve the problems existing in the current method of fixing the control switch housing, such as Figure 1 and Figure 2As shown, this application embodiment provides a control switch, including: an upper housing 100 with an upper connecting post 110 disposed on its inner side; a lower housing 200, which is snapped together with the upper housing 100, and a lower connecting post 210 matching the upper connecting post 110 is disposed on the inner side of the lower housing 200; when the upper housing 100 and the lower housing 200 are aligned and fixed, the upper connecting post 110 passes through the lower connecting post 210, and an accommodating space is formed between the upper housing 100 and the lower housing 200; a circuit board 300 is disposed in the accommodating space, and a button 310 and a wiring harness 322 pieces 320 are electrically connected to the circuit board 300.

[0040] like Figure 4 As shown, in this embodiment, an upper connecting post 110 is provided on the inner side of the upper housing 100, and a lower connecting post 210 matching the upper connecting post 110 is provided on the inner side of the lower housing 200. When the upper housing 100 and the lower housing 200 are fixed, a tight connection between the upper housing 100 and the lower housing 200 is achieved based on the interference fit between the upper connecting post 110 and the lower connecting post 210. When the upper and lower connecting posts are aligned and fixed, the upper connecting post 110 passes through the lower connecting post 210, meaning the interior of the lower connecting post 210 is hollow, and the inner diameter of the lower connecting post 210 matches the outer diameter of the upper connecting post 110. Simultaneously, a space is formed between the upper and lower housings to accommodate various components. In this embodiment, the circuit board 300 is disposed within this space, and the circuit board 300 is electrically connected to a button 310 and a wiring harness assembly 320. Therefore, it can be seen that the control switch in this embodiment uses matching upper and lower connecting posts 210 to clamp and fix the housing, which does not damage the integrity of the control switch housing, that is, the outer surface of the housing is intact and without holes. At the same time, the fixed housing can be flexibly disassembled according to actual needs, so that when a fault occurs inside the control switch, the internal circuit board 300 and other components can be maintained in a timely manner. Moreover, the interference fit of the upper and lower connecting posts can fix the housing immediately without waiting, simplifying installation, saving assembly time, and effectively improving production efficiency.

[0041] In some embodiments, the upper housing 100 is provided with an annular groove 120 on the side near the lower housing 200; the lower housing 200 is provided with an annular boss 220 that matches the annular groove 120.

[0042] In this embodiment, an annular groove 120 is circumferentially provided on the edge of the upper housing 100 near the lower housing 200, and an annular boss 220 matching the annular groove 120 is correspondingly provided on the edge of the lower housing 200 near the upper housing 100. When the upper and lower housings are fixed, the annular boss 220 can be embedded in the annular groove 120, providing precise positioning for the assembly of the upper and lower housings. Specifically, during the assembly process, the annular boss 220 can be installed along the edge of the annular groove 120, which has a certain guiding effect, helping the upper and lower connecting columns to align more accurately, reducing deviations and misalignments during the assembly of the connecting columns, and improving the reliability and accuracy of the connection. Moreover, the setting of the annular boss 220 and the annular groove 120, compared to the smooth setting of both the upper and lower housing edges, can also effectively prevent external dust, moisture and other substances from entering the housing. The interlocking of the annular boss 220 and the groove effectively isolates the inside and outside of the control switch, protecting the components inside the housing from the influence of the external environment and improving the protective performance of the product.

[0043] In some embodiments, one end of the upper connecting post 110 extends out of the upper housing 100, and one end of the lower connecting post 210 extends out of the lower housing 200.

[0044] In this embodiment, the height of the upper connecting post 110 is higher than that of the upper housing 100, and the height of the lower connecting post 210 is higher than that of the lower housing 200. When fixing the upper housing 100 and the lower housing 200, the upper connecting post 110 is installed entirely inside the lower connecting post 210, allowing for more space for the upper and lower connecting posts 210 to fit together during connection, thereby increasing the strength of the connection. Simultaneously, the longer fitting method can better disperse external forces, enabling the connected parts to withstand greater tensile and shear forces, making it less prone to loosening or detachment due to external forces. Furthermore, the fact that the upper connecting post 110 extends beyond the upper housing 100 and the lower connecting post 210 extends beyond the lower housing 200 facilitates positioning and alignment by the operator during installation. During installation, the docking position can be quickly found based on the parts extending from the upper and lower housings, improving installation efficiency.

[0045] In some embodiments, the number of upper connecting posts 110 is at least one; and when the number of upper connecting posts 110 is four, the four upper connecting posts 110 are arranged opposite each other at the four corners of the upper housing 100; and the distance between two upper connecting posts 110 on one side of the upper housing 100 is greater than the distance between two upper connecting posts 110 on the other side.

[0046] In this embodiment, the number of upper connecting posts 110 is preferably at least one, and the number of lower connecting posts 210 is the same as the number of upper connecting posts 110. As the number of upper and lower connecting posts increases, the fixing effect of the upper and lower shells is better. More preferably, there are four. It should be noted that when the number of upper connecting posts 110 is set to four, the four upper connecting posts 110 are respectively arranged at the four corners inside the upper shell 100, and the distance between the two upper connecting posts 110 on one side of the upper shell 100 is greater than the distance between the two upper connecting posts 110 on the other side. At the same time, the lower connecting posts 210 are matched with the upper connecting posts 110. Specifically, four lower connecting posts 210 are arranged at the four corners of the lower housing 200, with the circuit board 300 correspondingly disposed inside the lower housing 200. One end of the wiring harness assembly 320 electrically connected to the circuit board 300 extends out of the housing. The distance between the two lower connecting posts 210 on the side closer to the extension position of the wiring harness assembly 320 is smaller than the distance between the two lower connecting posts 210 on the other side. That is, one end of the wiring harness assembly 320 passes between the corresponding two lower connecting posts 210 and extends out of the housing. In other words, the four upper connecting posts 110 and the four lower connecting posts 210 in this embodiment are asymmetrically distributed, and the distance between the connecting posts near the extension position of the wiring harness assembly 320 is relatively close, which can provide a relatively concentrated exit path for the wiring harness. At the same time, it can also provide different supports in different directions, improving the overall stability of the housing. Moreover, since the four upper connecting posts and four lower connecting posts in this embodiment are asymmetrically distributed, they can play a foolproof role during the installation of the upper and lower housings, that is, they can guide or prompt relevant operators to perform the installation correctly, reducing the occurrence of human error.

[0047] In some embodiments, the circuit board 300 is a single-sided board, and a wire harness connector 330 is provided in the middle of the circuit board 300; the wire harness connector 330 is snapped and fixed to one end of the wire harness assembly 320.

[0048] In this embodiment, the circuit board 300 is preferably a single-sided board, and the button 310 and the corresponding wiring harness assembly 320 are electrically connected to the single-sided board, that is, the button 310 is controlled through the single-sided board. It should be noted that, compared with a double-sided board, only wiring is required on one side, which is relatively simple. It does not require complex operations such as alignment of double-sided wiring and via processing, reducing production difficulty and saving production costs.

[0049] In addition, the circuit board 300 of this embodiment is also provided with a wire harness connector 330. The wire harness connector 330 is snapped into one end of the wire harness assembly 320. That is, by providing the wire harness connector 330 on the circuit board 300 and connecting it to one end of the wire harness assembly 320 in a snap-fit ​​manner, the wire harness assembly 320 can be fixed. This allows for a more secure installation of the wire harness assembly 320 and prevents the wire harness from falling off during use, thus affecting the normal function of the product.

[0050] In some embodiments, the number of buttons 310 is at least one; and when the number of buttons 310 is four, the four buttons 310 are arranged in a matrix on the circuit board 300.

[0051] In this embodiment, the number of buttons 310 can be set according to actual needs to achieve corresponding functions. When there are four buttons 310, they are arranged in a matrix distribution on the circuit board 300, that is, the four buttons 310 are arranged in two columns and two rows, with a relatively uniform spacing between each button 310. This reduces circuit crossings and overlaps, lowering wiring difficulty. Simultaneously, the matrix distribution of the buttons 310 is more ergonomic, facilitating user operation. For example, in one scenario, a control switch with lumbar support adjustment function has four buttons 310 corresponding to a massage button, an intensity button, a lumbar support + button, and a lumbar support - button. In actual use, the user manually presses the buttons 310 to achieve the corresponding function. The matrix distribution of the four buttons 310 allows the user to quickly switch between the functions of different buttons 310, improving operational convenience and efficiency.

[0052] In some embodiments, the wire harness assembly 320 includes: a snap-fit ​​member 321, which snaps into and fixes to the wire harness connector 330; a wire harness group 322, one end of which passes through the snap-fit ​​member 321 and the other end extends out of the upper housing 100 and the lower housing 200; and a fastener 323, which is sleeved on the wire harness group 322 and is snapped into a slot 3232 opened on one side of the upper housing 100 and the lower housing 200 extending out of the wire harness group 322.

[0053] In this embodiment, the wiring harness assembly 320 includes a snap-fit ​​member 321 and a wiring harness group 322 passing through the snap-fit ​​member 321. Specifically, one end of the snap-fit ​​member 321 snaps into the wiring harness connector 330, that is, the wiring harness assembly 320 is snapped into the wiring harness connector 330 through the snap-fit ​​member 321, so that the wiring harness assembly 320 can be firmly fixed on the circuit board 300. Even if subjected to external force, it will not easily fall off the circuit board 300, ensuring the normal use of the control switch. At the same time, the other end of the snap-fit ​​member 321 is provided with the wiring harness group 322, and the wiring harness group 322 extends out of the housing from one side of the upper housing 100 and the lower housing 200. The wiring harness group 322 includes several wiring harnesses, which can be flexibly adjusted according to actual usage requirements. It should be noted that the upper part of the snap-fit ​​component 321 is provided with a guide ramp 3211, and the bottom of the guide ramp is provided with a guide groove. At the same time, the upper part of the wire harness connector 330 is provided with a receiving groove for accommodating the guide ramp 3211, and the bottom of the receiving groove is provided with a guide protrusion that matches the guide groove. When the snap-fit ​​component 321 and the wire harness connector 330 are snapped together, the guide ramp 3211 passes through the receiving groove, and the guide protrusion is snapped into the guide groove, thereby realizing the snap-fit ​​fixation between the wire harness assembly 320 and the wire harness connector 330. This ensures that the wire harness assembly 320 can be firmly installed in the housing of the control switch, ensuring product reliability and compactness.

[0054] Furthermore, the wiring harness assembly 320 in this embodiment is also provided with a fixing member 323. Specifically, the fixing member 323 is sleeved on the outer periphery of the wiring harness group 322. It should be noted that the upper housing 100 and the lower housing 200 have corresponding slots 3232 on the sidewalls extending from the wiring harness group 322, which can accommodate the fixing member 323. That is, the fixing member 323 in this embodiment is disposed in the slot 3232 and fixed to the upper housing 100 and the lower housing 200. Under the action of the fixing member 323, the wiring harness group 322 inside the housing can be effectively isolated from the wiring harness group 322 outside the housing. Even if the wiring harness group 322 outside the housing is subjected to external force, it will not affect the normal function of the corresponding wiring harness group 322 inside the housing. This effectively prevents the wiring harness group 322 inside the housing from being damaged, avoids the wire harness core from breaking under stress, and prevents functional failure, thus ensuring the reliability of the control switch.

[0055] In some embodiments, the fastener 323 is provided with a circumferential limiting groove 3231; the circumferential limiting groove 3231 is engaged with the corresponding side walls of the upper housing 100 and the lower housing 200.

[0056] In this embodiment, as Figure 3As shown, the fixing member 323 is provided with a circumferential limiting groove 3231. Specifically, the circumferential limiting groove 3231 engages with the side wall where the upper housing 100 and lower housing 200 slot 3232 are located, increasing the connection strength between the fixing member 323 and the upper housing 100 and lower housing 200, making the connection between the three more secure. When the control switch is in actual use, the external wiring harness group 322 will not be affected by positional shifts or rotations due to use, ensuring the normal operation of the control switch.

[0057] like Figure 1 As shown, in some embodiments, it further includes: a button cover 400, which covers the circuit board 300; and the button cover 400 is provided with a protrusion 410 at the position corresponding to the button 310, the button cover 400 is provided with an opening 420 at one end of the wire harness assembly 320, and the two sides of the button cover are provided with pick-up and put-down grooves 430.

[0058] In this embodiment, a button cover 400 is also provided. Specifically, the button cover 400 covers the top of the circuit board 300, and a protrusion 410 is provided corresponding to the button 310. It should be noted that the protrusion 410 in this embodiment can extend out of the upper housing 100, making it convenient for the user to press during use. In addition, the button cover in this embodiment also has a reserved marking protrusion. Furthermore, the button cover 400 in this embodiment has an opening 420 corresponding to the position of the wire harness connector 330, which can provide a space for the wire harness connector 330 and also allow observation of the connection status between the wire harness connector 330 and the snap-fit ​​member 321. Moreover, the button cover 400 in this embodiment also has corresponding retrieval grooves 430 on both sides. During the installation or removal of the control switch, the retrieval grooves 430 can provide a point of leverage, effectively reducing the risk of slippage during the retrieval process and improving maintenance efficiency.

[0059] In some embodiments, the button cover 400 is made of rubber and is a one-piece molded structure.

[0060] In this embodiment, the button cover 400 is preferably made of rubber. In practical applications, the button cover 400 usually needs to be printed with characters to indicate the function of the button 310. However, existing control switches typically use hard plastic buttons, and the printed characters do not adhere well to the plastic material and are extremely easy to fall off. The button cover 400 made of rubber in this embodiment can make the printed characters more durable and less likely to fall off during use, effectively ensuring the normal use of the control switch. Moreover, rubber is relatively inexpensive, which can effectively reduce the production cost of the control switch. At the same time, the protrusions 410 and the marking protrusions on the button cover 400 in this embodiment are integrally formed with the main body of the button cover. Existing control switches mostly use separate hard plastic button covers to cover the top of the corresponding buttons 310 on the circuit board 300. When there are multiple buttons 310, not only is the number of parts large, but the assembly is also relatively complicated. In this embodiment, the button cover 400 is set as an integral molded structure, which is easier to install and disassemble, and improves production and maintenance efficiency.

[0061] In summary, the control switch of this application uses an upper connecting post 110 inside the upper housing 100 and a lower connecting post 210 inside the lower housing 200 to fix the upper housing 100 and lower housing 200 together via an interference fit. With the cooperation of the upper and lower connecting posts, the upper housing 100 and lower housing 200 are pressed together. Compared to existing screw or glue fixing methods, this achieves the fixing purpose while avoiding damage to the integrity of the housing, allows for immediate installation, and enables flexible disassembly during use for internal maintenance of the control switch. This not only saves production and maintenance costs but also effectively ensures the reliability of the finished product.

[0062] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, 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.

[0063] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "a," "an," "the," and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusion. The terms "connected," "linked," "coupled," and similar words used in this application are not limited to physical or mechanical connections but include electrical connections, whether direct or indirect. The term "multiple" used in this application refers to two or more, and "and / or" describes the relationship between related objects, indicating that three relationships may exist. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this application are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0064] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications or improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A control switch, characterized in that, include: The upper housing has an upper connecting post on its inner side; The lower housing is snapped together with the upper housing, and the inner side of the lower housing is provided with a lower connecting post that matches the upper connecting post; when the upper housing and the lower housing are aligned and fixed, the upper connecting post passes through the lower connecting post, and an accommodating space is formed between the upper housing and the lower housing. A circuit board is disposed within the accommodating space, and buttons and wiring harness assemblies are electrically connected to the circuit board.

2. The control switch according to claim 1, characterized in that, The upper housing has an annular groove circumferentially provided on the side near the lower housing; The lower housing is provided with an annular boss that matches the annular groove.

3. The control switch according to claim 1, characterized in that, One end of the upper connecting post extends out of the upper housing, and one end of the lower connecting post extends out of the lower housing.

4. The control switch according to claim 1, characterized in that, The number of the upper connecting posts is at least one; and When there are four upper connecting posts, the four upper connecting posts are arranged opposite each other at the four corners of the upper housing; and the distance between two upper connecting posts on one side of the upper housing is greater than the distance between two upper connecting posts on the other side.

5. The control switch according to claim 1, characterized in that, The circuit board is a single-sided board, and a wire harness connector is provided in the middle of the circuit board. The wire harness connector is snapped into place at one end of the wire harness assembly.

6. The control switch according to claim 1, characterized in that, The number of the buttons is at least one; and When the number of buttons is four, the four buttons are arranged in a matrix on the circuit board.

7. The control switch according to claim 5, characterized in that, The wire harness assembly includes: A snap-fit ​​connector is snapped into and fixed to the wire harness connector. The wire harness assembly has one end inserted into the snap-fit ​​member and the other end extending out of the upper housing and the lower housing; A fastener is fitted onto the wire harness assembly, and the fastener is snapped into a slot opened on one side of the upper housing and the lower housing extending out of the wire harness assembly.

8. The control switch according to claim 7, characterized in that, The fastener is provided with a circumferential limiting groove; The circumferential limiting groove is engaged with the corresponding side walls of the upper housing and the lower housing.

9. The control switch according to any one of claims 1-8, characterized in that, Also includes: A key cover plate is installed over the circuit board; and The button cover has a protrusion at the button position, an opening at one end of the button cover opposite the wire harness assembly, and retrieval grooves on both sides of the button cover.

10. The control switch according to claim 9, characterized in that, The button cover is made of rubber and is a one-piece molded structure.

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