A kind of pressing plate mechanism for flexible touch screen switch measurement of household appliance

Abstract

This utility model discloses a pressure plate mechanism for measuring flexible touchscreen switches in home appliances, belonging to the field of testing equipment for flexible touchscreen switches in home appliances. It aims to solve the problem of affecting the fixing accuracy caused by the traditional method of using a rotating nut to control displacement. The key technical points are: a pressure plate; a rotating rod rotatably connected to a platform; a pressing part rotatably mounted on the rotating rod; an abutting part for abutting the pressure plate, the abutting part slidingly on the rotating rod along its axial direction; and a transmission rod, with both ends connected to the pressing part and the abutting part respectively, the transmission rod having two states: a locked state and a sliding state. This utility model uses the state transition of the transmission rod to achieve rapid locking and unlocking, replacing the traditional nut rotation fixing method, reducing operation steps, lowering the labor intensity of operators, adapting to the pace of large-scale production, ensuring fixing accuracy and thus ensuring measurement accuracy, and guaranteeing the finished size and quality of the flexible touchscreen switch for home appliances.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment for flexible touch screen switches in home appliances, and more specifically, it relates to a pressure plate mechanism for measuring flexible touch screen switches in home appliances. Background Technology

[0002] In the home appliance manufacturing process, the precise assembly of flexible touchscreen switches is a crucial step in ensuring appliance performance and user experience. It requires millimeter-level precision in fitting the switch with the appliance's mounting slot and internal support. Even a slight dimensional deviation can lead to misalignment between the touch area and internal circuitry, directly affecting the switch's sensitivity, reliability, and even causing compatibility issues such as assembly jamming. Therefore, high-precision dimensional measurement of flexible touchscreen switches has become a core aspect of controlling production quality.

[0003] Currently, the industry commonly uses image measuring instruments to perform this measurement work. During operation, the flexible touchscreen switch needs to be placed on the measuring platform, and its position is fixed by a pressure plate mechanism on the platform. The existing pressure plate mechanism has a relatively traditional structure, mainly consisting of a pressure plate, a threaded rod rotatably connected to the platform, and a matching nut on the threaded rod. The pressure plate has a notch corresponding to the position of the threaded rod. During the fixing process, the threaded rod must first be rotated to engage with the notch on the pressure plate. Then, by repeatedly rotating the nut, the nut is moved along the threaded rod using thread transmission until the nut is tightly abutting against the pressure plate, thereby locking the pressure plate position and ultimately fixing the flexible touchscreen switch.

[0004] However, this fixing method, which relies on rotating the nut multiple times to control displacement, has significant drawbacks: on the one hand, each fixing requires the operator to manually rotate the nut several or even dozens of times, which greatly extends the measurement preparation time for a single workpiece, resulting in low overall work efficiency and making it difficult to adapt to the pace of large-scale production; on the other hand, frequent and repetitive rotation movements will significantly increase the labor intensity of the operator's hands, and long-term operation is prone to fatigue, which may not only affect the fixing accuracy, but also pose potential occupational health hazards.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure plate mechanism for measuring flexible touch screen switches in home appliances in order to solve the above-mentioned problems.

[0007] This utility model achieves the above objectives through the following technical solution: a pressure plate mechanism for measuring flexible touch screen switches in home appliances, comprising a pressure plate; The rotating rod is rotatably connected to the platform. A snap-fit ​​block is slidably mounted on a rotating rod, with an elastic element two abutting between them. The elastic element two pushes the snap-fit ​​block to extend radially outward along the rotating rod. The pressing part is rotatably mounted on the rotating rod, and its side wall has an insertion port for the snap-fit ​​block to be inserted. The abutting part, used to abut the pressure plate, is slidably disposed on the rotating rod along the axial direction of the rotating rod; The transmission rod is connected to the pressing part and the abutting part at both ends, and has two states: locking and sliding. In the locked state, the transmission rod and the rotating rod are axially parallel and relatively fixed, driving the abutment part to press the pressure plate, and the snap block is pushed into the insertion port by the elastic element 2; In the sliding state, the transmission rod and the rotating rod intersect axially and can be displaced relative to each other, and the contact part can slide freely along the axial direction of the rotating rod.

[0008] The present invention is further configured such that: the abutting part includes a movable plate connected to the transmission rod and an abutting plate for abutting the pressure plate; an elastic element is also abutting between the movable plate and the abutting plate; a guide rod is fixedly provided on the abutting plate; one end of the guide rod away from the abutting plate passes through the movable plate and is slidably connected to the movable plate.

[0009] The present invention is further configured such that the pressure control component includes: A limit block is slidably mounted on the pressing part; The positioning bolt is used to fix the position of the limiting block on the pressing part. The positioning bolt is threadedly connected to the limiting block. Tightening the positioning bolt will cause its end to abut against the pressing part, thus fixing the position of the limiting block. One end of the transmission rod is slidably mounted on the pressing part and overlaps with the sliding trajectory of the limiting block, so that the limiting block can limit the sliding distance of the transmission rod, thereby controlling the pressure of the abutment part on the pressure plate.

[0010] The present invention is further configured such that: two snap-fit ​​blocks are provided and symmetrically arranged on both sides of the rotating rod, and the snap-fit ​​block embedding part is provided with a rounded corner structure.

[0011] The present invention is further configured such that the pressing part is a U-shaped semi-enclosed structure, the hollow part of which forms a space to accommodate the rotating rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: Firstly, the transmission rod is used to switch from intersecting to parallel states, enabling rapid locking and unlocking. This replaces the traditional nut rotation fixing method, reduces operation steps, lowers the labor intensity of operators, adapts to the pace of large-scale production, ensures fixing accuracy and thus measurement accuracy, and guarantees the finished size and quality of flexible touch screen switches for home appliances. Secondly, in the locked state, the transmission rod and the rotating rod form a collinear support, which, together with the precise fit between the snap-fit ​​block and the insert, ensures that the pressure of the abutment part on the pressure plate is stable, avoids the workpiece from loosening during the measurement process, and ensures the accuracy of dimensional measurement. Thirdly, by using an elastic element to buffer pressure impact, and in conjunction with a pressure control component, a pressure adjustment range of 50-300N can be achieved, which can be adapted to flexible touch screen switches of home appliances of different thicknesses to meet diverse positioning needs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention. Figure 1 ; Figure 3 This is a cross-sectional view of the present invention. Figure 2 .

[0014] Reference numerals in the attached drawings: 1. Pressure plate; 2. Rotating rod; 3. Pressing part; 4. Abutting part; 5. Transmission rod; 6. Elastic element one; 7. Positioning bolt; 8. Limiting block; 9. Clamping block; 10. Elastic element two. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," 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 the present utility model and simplifying the description. They 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. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. Example

[0016] A pressure plate mechanism for measuring flexible touch screen switches in home appliances, such as Figures 1-3 As shown, the device includes a pressure plate 1, a rotating rod 2 rotatably connected to a platform, a pressing part 3 rotatably mounted on the rotating rod 2, an abutting part 4 for abutting the pressure plate 1, and a transmission rod 5 connected at both ends to the pressing part 3 and the abutting part 4 respectively. The abutting part 4 is slidably mounted on the rotating rod 2 along the axial direction. When the flexible touch screen switch to be measured is placed on the platform, and then the pressure plate 1 is placed smoothly on the platform, the rotating rod 2 is rotated so that it is engaged with the notch of the pressure plate 1. Under the action of gravity, the abutting part 4 slides down the axial direction of the rotating rod 2 to initially adhere to the surface of the pressure plate. At this time, pressure is applied to the pressing part 3, and the transmission rod 5 pushes the abutting part 4 to overcome the reaction force of the flexible touch screen switch and further press it.

[0017] When the pressing part 3 rotates to the rotating rod 2 at an angle ≤5° with the axis of the rotating rod 2, the transmission rod 5 gradually changes from an intersecting state to being parallel to the axis of the rotating rod 2 as the pressing part 3 changes its posture. At this time, the transmission rod 5 and the rotating rod 2 form a collinear support and enter a locked state, thereby fixing and supporting the position of the abutment part 4, and thus achieving the effect of pressing the pressure plate 1.

[0018] "The transmission rod 5 is made of 20CrMnTi alloy steel with a diameter of ≥10mm. In the locked state, it can withstand an axial pressure of ≥500N, which far exceeds the working pressure, thus avoiding the problem of bending due to excessive pressure."

[0019] The rotating rod 2 is rotatably connected to the measuring platform via a bearing-equipped rotating shaft base. The axis of the rotating shaft is perpendicular to the axial direction of the rotating rod 2, ensuring that the rotating rod 2 can rotate horizontally around the platform. Both ends of the transmission rod 5 are hinged to the pressing part 3 and the abutment part 4 via pins, thereby ensuring the transmission stability among the pressing part 3, the abutment part 4, and the transmission rod 5. The abutment part 4 is sleeved on the outer wall of the rotating rod 2, using an H8 / f7 clearance fit. The inner wall of the abutment part 4 is coated with a wear-resistant coating, and the sleeved connection enables smooth axial sliding.

[0020] When it is necessary to release the fixation, simply rotate the pressing part 3 in the opposite direction, so that the transmission rod 5 changes from being parallel to the axis of the rotating rod 2 to being intersecting the axis of the rotating rod 2 and being able to move relative to it. This releases the fixation and support of the abutment part 4, allowing the abutment part 4 to be pulled upward and releasing the fixation of the pressure plate 1.

[0021] like Figures 2-3 As shown, the abutting part 4 includes a movable plate connected to the transmission rod 5 and an abutting plate for abutting the pressure plate 1. An elastic element 6 is also abutting between the movable plate and the abutting plate. A guide rod is fixedly installed on the abutting plate. The end of the guide rod away from the abutting plate passes through the movable plate and is slidably connected to the movable plate. Through the design of the guide rod, after the abutting part 4 abuts against the pressure plate 1, when the transmission rod 5 further pushes the movable plate to move, it will compress the elastic element 6. The elastic element 6 reduces the pressure impact while increasing the pressure, so as to better adapt to the positioning pressure required by different flexible touch screen switches.

[0022] And as Figures 2-3As shown, the pressure plate mechanism for measuring flexible touch screen switches in home appliances also includes a pressure control component. The pressure control component includes a limiting block 8 slidably disposed on the pressing part 3 and a positioning bolt 7 for fixing the position of the limiting block 8 on the pressing part 3. The positioning bolt 7 is threadedly connected to the limiting block 8. Tightening the positioning bolt 7 allows its end to abut against the pressing part 3, fixing the position of the limiting block 8, thereby changing the position of the limiting block 8 on the pressing part 3. One end of the transmission rod 5 is slidably disposed on the pressing part 3 and overlaps with the sliding trajectory of the limiting block 8. After the abutting part 4 contacts the pressure plate 1, the pressing part 3 continues to rotate, and the end of the transmission rod 5 near the pressing part 3 slides upward along the surface of the pressing part 3. When it slides to abut against the limiting block 8, the transmission rod 5 can no longer slide. At this time, the rotational force of the pressing part 3 is converted into a compressive force on the elastic element 6 through the transmission rod 5. As the rotation angle of the pressing part 3 increases, the compression of the elastic element 6 increases, and the pressure on the pressure plate 1 increases synchronously.

[0023] For every 1mm that the limiting block 8 moves toward the end of the pressing part 3, the compression of the elastic element 6 increases by 1-1.5mm, and the corresponding pressure increases by 5-15N. The preset position can be read intuitively through the scale, thus ensuring the accuracy of the pressure.

[0024] The elastic element 6 is a compression spring with a spring constant of 5-10 N / mm and a maximum compression stroke of 10-15 mm. Combined with the adjustable stroke of the limit block 8 of 5-20 mm, the pressure adjustment range of 50-300 N can be achieved. By changing the degree to which the transmission rod 5 compresses the elastic element 6, the pressure on the pressure plate 1 can be changed.

[0025] like Figure 3 As shown, a locking block 9 is slidably disposed on the rotating rod 2. An elastic element 10 is abutted between the rotating rod 2 and the locking block 9. The elastic element 10 is used to push the locking block 9 to extend radially outward along the rotating rod 2. The inner side wall of the pressing part 3 is provided with an insertion hole for the locking block 9 to be inserted. When the pressing part 3 is pushed to rotate closer to the rotating rod 2, the locking block 9 coincides with the insertion hole, and the elastic element 10 is inserted into the insertion hole through the locking block 9. This enhances the connection stability between the rotating rod 2 and the pressing part 3 in the locked state and ensures the positioning effect.

[0026] The elastic element 210 is made of elastic rubber. In its free state, it pushes the locking block 9 out of the outer wall of the rotating rod 2 to ensure the stable formation of the locking force.

[0027] The snap-fit ​​block 9 and the insert are fitted with an H7 / g6 clearance. The end of the snap-fit ​​block 9 is rounded with a radius of R0.5-R1mm, and the edge of the insert is chamfered with a radius of 30°×0.5mm to ensure smooth snap-fit ​​and an axial clearance of ≤0.1mm after locking.

[0028] like Figures 1-3As shown, the pressing part 3 is designed as a U-shaped semi-enclosed structure, in which the hollow part forms a space to accommodate the rotating rod 2. Thus, when locked, the pressing part 3 encloses the rotating rod 2, thereby reducing the footprint and making the overall structure more compact.

[0029] At the same time, such as Figure 3 As shown, there are two locking blocks 9, which are symmetrically arranged on both sides of the rotating rod 2. Together with the U-shaped semi-enclosed structure of the pressing part 3, they can form a balanced and fixed effect, improving the connection firmness. In addition, the sliding groove of the rotating rod 2 corresponding to the sliding of the locking block 9 is provided with a narrowing structure near the opening of the pressing part 3, which can prevent the locking block 9 from falling off.

[0030] Working principle: Step 1: Place the flexible touch screen switch to be measured on the platform, cover the workpiece with pressure plate 1 and align it for positioning; Step 2: Rotate the rotating rod 2 to make it engage with the notch of the pressure plate 1, and the abutting part 4 initially adheres to the pressure plate 1 under the action of gravity; Step 3: Hold the rotating rod 2 and apply pressure to the pressing part 3 to make it rotate in the direction of the rotating rod 2, and push the abutment part 4 to press the pressure plate 1 through the transmission rod 5; Step 4: Continue to rotate the pressing part 3 until the transmission rod 5 is parallel and locked to the rotating rod 2. At this time, the locking block 9 is inserted into the insertion port to complete the mechanical locking. The compression amount of the elastic element 6 is determined by the preset position of the limiting block 8, and the pressure value is stable. Step 5: When releasing the fixation, reverse the pressing part 3 to disengage the locking block 9 from the insertion port, the transmission rod 5 returns to its tilted state, and the pressure plate 1 can be removed by pulling the abutment part 4 upward.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure plate mechanism for measuring flexible touch screen switches in home appliances, characterized in that: include: Pressure plate (1); Rotating rod (2) is rotatably connected to the platform; The snap-fit ​​block (9) is slidably mounted on the rotating rod (2), and an elastic element (10) abuts between the two. The elastic element (10) pushes the snap-fit ​​block (9) to extend outward along the radial direction of the rotating rod (2). The pressing part (3) is rotatably mounted on the rotating rod (2), and its side wall is provided with an insertion port for the card receiving block (9) to be inserted; The abutting part (4) is used to abut the pressure plate (1) and is slidably disposed on the rotating rod (2) along the axial direction of the rotating rod (2); The transmission rod (5) is connected at both ends to the pressing part (3) and the abutting part (4) respectively, and has two states: locking and sliding. In the locked state, the transmission rod (5) and the rotating rod (2) are axially parallel and relatively fixed, driving the abutment part (4) to press the pressure plate (1), and the snap block (9) is pushed into the insertion port by the elastic element two (10); In the sliding state, the transmission rod (5) and the rotating rod (2) intersect axially and can be displaced relative to each other, and the contact part (4) can slide freely along the axial direction of the rotating rod (2).

2. The pressure plate mechanism for measuring flexible touch screen switches in home appliances according to claim 1, characterized in that: The abutting part (4) includes a movable plate connected to the transmission rod (5) and an abutting plate for abutting the pressure plate (1). An elastic element (6) is also abutting between the movable plate and the abutting plate. A guide rod is fixedly provided on the abutting plate. The end of the guide rod away from the abutting plate passes through the movable plate and is slidably connected to the movable plate.

3. A pressure plate mechanism for measuring flexible touch screen switches in home appliances according to claim 1, characterized in that: It also includes a pressure control component, which comprises: The limiting block (8) is slidably disposed on the pressing part (3); The positioning bolt (7) is used to fix the position of the limiting block (8) on the pressing part (3). The positioning bolt (7) is threadedly connected to the limiting block (8). Tightening the positioning bolt (7) will cause its end to abut against the pressing part (3) and fix the position of the limiting block (8). One end of the transmission rod (5) is slidably disposed on the pressing part (3) and overlaps with the sliding trajectory of the limiting block (8) so that the limiting block (8) can limit the sliding distance of the transmission rod (5) and thus control the pressure of the abutment part (4) on the pressure plate (1).

4. A pressure plate mechanism for measuring flexible touch screen switches in home appliances according to claim 1, characterized in that: Two snap-fit ​​blocks (9) are provided and are symmetrically arranged on both sides of the rotating rod (2). The snap-fit ​​block (9) has a rounded corner structure in its embedded part.

5. A pressure plate mechanism for measuring flexible touch screen switches in home appliances according to claim 1, characterized in that: The pressing part (3) is designed as a U-shaped semi-enclosed structure, and its hollow part forms a space to accommodate the rotating rod (2).

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