A pressure controller

Abstract

This utility model discloses a pressure controller, including a housing and a pressure gauge assembly, a control assembly, and a mounting bracket installed within the housing. The mounting bracket is fixedly installed within the housing. A positioning structure is provided between the mounting bracket and the rotating shaft in the control assembly. The positioning structure includes a positioning hole and a positioning shaft, one of which is located on the mounting bracket, and the other is located on the rotating shaft; the positioning shaft is rotatably connected to the positioning hole. The axis of the positioning hole / positioning shaft on the mounting bracket coincides with the design axis of the control assembly. One end of the rotating shaft is connected to the lower pointer in the pressure gauge assembly, and the connection between the rotating shaft and the lower pointer is configured such that when the lower pointer rotates, it drives the rotating shaft to rotate synchronously at the same angle; the axis of the positioning shaft / positioning hole on the rotating shaft coincides with the rotation axis of the rotating shaft itself. This pressure controller solves the problem in the prior art where the positional error of the lower pointer rotation axis in the pressure gauge assembly is amplified, leading to the failure of the pressure controller.

Description

Technical Field

[0001] This utility model belongs to the field of pressure controller technology, and in particular relates to a rotating shaft structure and pressure controller of a pressure controller. Background Technology

[0002] Automatic water pump controllers, also known as pressure controllers, can automatically control the start and stop of various water pumps, enabling free adjustment of pressure control, and are widely used.

[0003] Some pressure controllers currently use pressure gauge assemblies to obtain pressure, which is then converted into the rotation angle of the lower pointer in the gauge assembly. However, because the lower pointer is relatively small, the control component in the pressure controller cannot directly obtain its rotation angle by connecting to it directly. Therefore, a rotating shaft connected to and rotating synchronously with the lower pointer is typically used. The control component connects to this shaft and obtains its rotation angle instead of the lower pointer's rotation angle. Examples include the pressure controller disclosed in patent CN206694234U, the digital display pressure control device disclosed in patent CN207989288U, and the pressure control device disclosed in patent CN208024539U. In these types of pressure controllers, the rotation axis of the lower pointer in the pressure gauge assembly needs to coincide with the design axis of the control component (the design axis of the control component is the position of the shaft's axis relative to the housing during design).

[0004] However, in actual production, the position of the rotation axis of the lower pointer in the pressure gauge assembly relative to the housing is inevitably subject to slight errors (i.e., the rotation axis of the lower pointer does not coincide with the design axis, but this error is still within the allowable error range). This causes the axis of the rotating shaft fixed to the lower pointer to deviate from the design axis, and this slight error will be amplified on the rotating shaft (for example, a 0.1 mm error at the lower pointer may be amplified to 1 mm in the middle of the rotating shaft along its length, and to 2 mm at the end of the rotating shaft not connected to the lower pointer), thus becoming a large error (this error exceeds the allowable error range), making the pressure controller a defective product. Utility Model Content

[0005] To address the above problems, this utility model provides a pressure controller, including a housing, a pressure gauge assembly, and a control assembly, wherein the pressure gauge assembly and the control assembly are respectively mounted on the housing, and the controller further includes a mounting bracket.

[0006] The mounting bracket is fixedly installed inside the housing; a positioning structure is provided between the mounting bracket and the rotating shaft in the control assembly, the positioning structure including a positioning hole and a positioning shaft, one of the positioning hole and the positioning shaft being provided in the mounting bracket, and the other being provided in the rotating shaft; the positioning shaft is rotatably connected in the positioning hole;

[0007] The axis of the positioning hole / positioning shaft on the mounting bracket coincides with the design axis of the control component;

[0008] One end of the rotating shaft is connected to the lower pointer in the pressure gauge assembly, and the connection between the rotating shaft and the lower pointer is configured such that when the lower pointer rotates, it drives the rotating shaft to rotate synchronously at the same angle; the axis of the positioning shaft / positioning hole on the rotating shaft coincides with the rotation axis of the rotating shaft itself.

[0009] In a pressure controller provided in one embodiment, the positioning hole is provided in the mounting bracket and the positioning hole is a through hole; the rotating shaft passes through the positioning hole and both ends extend out of the positioning hole respectively, and the part of the rotating shaft located in the positioning hole is the positioning shaft.

[0010] In one embodiment of the pressure controller, the rotating shaft includes two rotating shaft components and a transmission assembly;

[0011] The axes of the two rotating shafts coincide, and also coincide with the rotation axis of the rotating shaft itself; the two rotating shafts are disposed on both sides of the mounting bracket, and the positioning structure is provided between the two side surfaces of the mounting bracket and the two rotating shafts respectively;

[0012] The transmission assembly is connected to the two rotating shafts respectively to achieve synchronous rotation of the two rotating shafts.

[0013] In a pressure controller provided in one embodiment, the positioning hole is provided on the end face of the rotating shaft facing the mounting bracket, and the corresponding positioning shaft is protruding on the corresponding surface of the mounting bracket;

[0014] or,

[0015] The mounting bracket has a positioning hole on its surface facing the rotating shaft. One end of the rotating shaft is rotatably connected to the positioning hole, and the portion of the rotating shaft located inside the positioning hole is the positioning shaft.

[0016] In one embodiment of the pressure controller, the transmission assembly includes:

[0017] Two connecting protrusions are respectively protruding from the sidewalls of the two rotating shafts;

[0018] A connector, which is connected to each of the two connecting protrusions.

[0019] In a pressure controller provided in one embodiment, either the rotating shaft or the lower pointer is provided with a first slot, and the other is provided with a first locking block; the first locking block is inserted into and connected to the first slot.

[0020] There is a gap between at least a portion of the outer sidewall of the first card block and the inner sidewall of the corresponding first card slot.

[0021] In one embodiment of the pressure controller, the gap between the first card block and the first card slot is less than 1 mm.

[0022] In a pressure controller provided in one embodiment, either the rotating shaft or the lower pointer is provided with a first slot, and the other is provided with a first locking block; the first locking block is inserted into and connected to the first slot.

[0023] The first slot / first block on the lower pointer is located on the periphery of the design axis of the control component; the length of the first slot in the circumferential direction of the design axis is greater than the length of the first block in the circumferential direction of the design axis and the difference is less than 1 mm.

[0024] In a pressure controller provided in one embodiment, the rotating shaft includes a rotating shaft body and a transmission component; the positioning structure is disposed on the rotating shaft body, the transmission component is fixedly connected to the rotating shaft body, and the transmission component is provided with the first locking block / first locking groove.

[0025] In a pressure controller provided in one embodiment, the transmission component is provided with a cylindrical first locking block, and the lower pointer is provided with a rectangular first locking groove.

[0026] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:

[0027] The pressure controller provided by this utility model solves the problem in the prior art where the positional error of the lower pointer rotation axis in the pressure gauge assembly is amplified, leading to the failure of the pressure controller. This is achieved by setting a mounting bracket on the housing and a positioning structure between the mounting bracket and the rotating shaft, ensuring that the axis of the positioning hole / positioning shaft on the mounting bracket coincides with the design axis of the control component. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] Figure 1 This is a schematic diagram of a pressure controller in Example 1 (the full structure of the pressure controller is not shown).

[0030] Figure 2 This is a schematic diagram of the connection between the rotating shaft and the mounting bracket in Example 1;

[0031] Figure 3 This is a schematic diagram of the positioning shaft hole on the mounting bracket in Example 1;

[0032] Figure 4 This is a schematic diagram of the rotating shaft and pressure gauge assembly in Example 1;

[0033] Figure 5 This is a schematic diagram of the shaft structure in Example 1;

[0034] Figure 6 This is a schematic diagram of the pressure gauge assembly in Example 1;

[0035] Figure 7 This is a schematic diagram of a pressure controller in Example 2 (the full structure of the pressure controller is not shown).

[0036] Figure 8 This is a schematic diagram of the mounting bracket, transmission components, and pressure gauge assembly in Example 2;

[0037] Figure 9 This is a schematic diagram of the connection between the rotating shaft and the mounting bracket in Example 2;

[0038] Figure 10 This is a schematic diagram of the shaft body, transmission component, and pressure gauge assembly in Example 2;

[0039] Figure 11 This is a schematic diagram of the structure of the shaft body and transmission components in Example 2;

[0040] Figure 12 This is a schematic diagram of the rotating shaft in Example 2;

[0041] Figure 13 This is a schematic diagram of the transmission component in Example 2;

[0042] Figure 14 This is a schematic diagram of the mounting bracket in Example 2;

[0043] Figure 15 These are schematic diagrams of the rotating shaft and transmission assembly in Examples 3 and 4;

[0044] Figure 16 This is a schematic diagram of the positioning shaft on the mounting bracket in Example 3;

[0045] Figure 17 This is a schematic diagram of the positioning hole on the rotating shaft in Example 3;

[0046] Figure 18 This is a schematic diagram of the positioning holes on the mounting bracket in Example 4;

[0047] Figure 19This is a schematic diagram of the positioning shaft on the rotating shaft component in Example 4;

[0048] Figure 20 This is a schematic diagram of the first slot on the lower pointer in Embodiment 4;

[0049] Figure 21 This is a schematic diagram of the first locking block on the rotating shaft in Example 4.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1: Shell;

[0052] 2: Pressure gauge assembly; 21: Lower pointer; 211: First slot;

[0053] 3: Control component; 31: Rotating shaft; 311: First rotating shaft; 3111: First locking block (set on the rotating shaft); 312: Second rotating shaft;

[0054] 313: Rotary shaft body; 3131: Second locking block; 314: Transmission component; 3141: First locking block (set on the transmission component); 3142: Second locking slot;

[0055] 315: Rotating shaft; 316: Connecting protrusion; 317: Connecting part;

[0056] 4: Install the bracket;

[0057] 5: Dial; 6: Upper indicator hand;

[0058] 7: Positioning hole; 8: Positioning shaft. Detailed Implementation

[0059] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0060] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0061] In the description of this utility model, the term "a" not only means "only one" but can also mean "more than one". The terms "first", "second", "third", etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "perpendicular" and "parallel" do not mean absolutely perpendicular or parallel, but can be approximately perpendicular or approximately parallel.

[0062] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0063] Example 1

[0064] See Figures 1 to 6 This embodiment provides a pressure controller, including a housing 1, a pressure gauge assembly 2, and a control assembly 3. The pressure gauge assembly 2 and the control assembly 3 are respectively mounted on the housing 1.

[0065] The pressure gauge assembly 2 converts the pressure magnitude into the rotation angle of the lower pointer 21. The control assembly 3 acquires the rotation angle of the lower pointer 21 and outputs a control signal. Since the rotation angle of the lower pointer 21 is difficult to measure directly, the control assembly 3 includes a rotating shaft 31 connected to the lower pointer 21. The lower pointer 21 and the rotating shaft 31 rotate synchronously, so the rotation angle of the rotating shaft 31 is used to represent the rotation angle of the lower pointer 21. The control assembly 3 outputs a signal based on the rotation angle of the rotating shaft 31. There are various ways for the control assembly 3 to acquire the rotation angle of the rotating shaft 31 and output a signal (e.g., the optical signal transmission and reception method shown in patent CN206694234U, the magnetic angle sensor method shown in patent CN207989288U, the light-shielding encoder disk method shown in patent CN208024539U, etc.), and these are not the innovations of this utility model; therefore, they will not be elaborated upon in this embodiment.

[0066] The pressure controller provided in this embodiment also includes a mounting bracket 4, which is fixedly installed inside the housing 1. A positioning structure is provided between the mounting bracket 4 and the rotating shaft 31. The positioning structure includes a positioning hole 7 and a positioning shaft 8. One of the positioning hole 7 and the positioning shaft 8 is located on the mounting bracket 4, and the other is located on the positioning shaft 8. The positioning shaft 8 is rotatably connected to the positioning hole 7. The axis of the positioning hole 7 / positioning shaft 8 on the mounting bracket 4 coincides with the design axis of the control component 3. One end of the rotating shaft 31 is connected to the lower pointer 21, and the connection between the rotating shaft 31 and the lower pointer 21 is configured so that when the lower pointer 21 rotates, it drives the rotating shaft 31 to rotate synchronously at the same angle. The axis of the positioning shaft 8 / positioning hole 7 on the rotating shaft 31 coincides with the rotation axis of the rotating shaft 31 itself.

[0067] Thus, by setting a mounting bracket 4 on the housing 1 and a positioning structure between the mounting bracket 4 and the rotating shaft 31, and by ensuring that the axis of the positioning hole 7 / positioning shaft 8 on the mounting bracket 4 coincides with the design axis of the control component 3, and that the axis of the positioning shaft 8 / positioning hole 7 on the rotating shaft 31 coincides with the rotation axis of the rotating shaft 31 itself, the rotation axis of the rotating shaft 31 itself can be kept in a position that coincides with the design axis. This solves the problem in the prior art where the position error of the rotation axis of the lower pointer 21 in the pressure gauge component 2 is amplified, leading to the failure of the pressure controller.

[0068] Specifically, the positioning hole 7 is provided on the mounting bracket 4, and the positioning hole 7 is a through hole. The rotating shaft 31 passes through the positioning hole 7 and its two ends extend out of the positioning hole 7 respectively. The part of the rotating shaft 31 located inside the positioning hole 7 is the aforementioned positioning shaft 8.

[0069] One of the rotating shaft 31 and the lower pointer 21 is provided with a first slot 211, and the other is provided with a first locking block 3111. The first locking block 3111 is inserted into and connected to the first slot 211, realizing the connection between the rotating shaft 31 and the lower pointer 21. The design axis of the control component passes through the first slot 211 / first locking block 3111 on the lower pointer 21, and there is a gap between at least a portion of the outer side wall of the first locking block 3111 and the inner side wall of the corresponding first slot 211. In this way, the position of the rotating shaft 31 is positioned by the positioning hole 7 on the mounting bracket 4, and the position of the rotation axis of the lower pointer 21 relative to the housing 1 will not affect the position of the rotating shaft 31 relative to the housing 1. Preferably, the gap between the first locking block 3111 and the first slot 211 is less than 1 mm. Thus, although the existence of the gap may cause a small error between the rotation angle of the lower pointer 21 and the rotation angle of the rotating shaft 31, this error is limited to the allowable error range.

[0070] Specifically in this embodiment, such as Figure 5 and Figure 6As shown, a rectangular first locking block 3111 is formed at one end of the rotating shaft 31, and a rectangular first locking groove 211 is provided on the lower pointer 21. The first locking block 3111 on the rotating shaft 31 is inserted into and connected to the first locking groove 211 on the lower pointer 21, thereby realizing the connection between the rotating shaft 31 and the lower pointer 21.

[0071] like Figure 5 As shown, the rotating shaft 31 in this embodiment includes a first rotating shaft 311 and a second rotating shaft 312. The first end of the first rotating shaft 311 has a first locking block 3111 that engages with the first locking groove 211. The second end of the first rotating shaft 311 is engaged with the first end of the second rotating shaft 312. The second rotating shaft 312 passes through the positioning hole 7.

[0072] Furthermore, such as Figure 1 As shown, the pressure controller also includes a dial 5 and an upper indicator pointer 6. The end of the rotating shaft 31 not connected to the lower pointer 21 is connected to the upper indicator pointer 6. When the rotating shaft 31 rotates, it drives the upper indicator pointer 6 to rotate synchronously at the same angle, allowing the pressure to be obtained in real time by directly observing the dial 5 and the upper indicator pointer 6 with the naked eye. Specifically, the second end of the second rotating shaft 312 passes through the dial 5 and is connected to the upper indicator pointer 6.

[0073] Example 2

[0074] See Figures 7 to 14 This embodiment provides a pressure controller, including a housing 1, a pressure gauge assembly 2, and a control assembly 3. The pressure gauge assembly 2 and the control assembly 3 are respectively mounted on the housing 1.

[0075] The pressure gauge assembly 2 converts the pressure magnitude into the rotation angle of the lower pointer 21. The control assembly 3 acquires the rotation angle of the lower pointer 21 and outputs a control signal. Since the rotation angle of the lower pointer 21 is difficult to measure directly, the control assembly 3 includes a rotating shaft 31 connected to the lower pointer 21. The lower pointer 21 and the rotating shaft 31 rotate synchronously, so the rotation angle of the rotating shaft 31 is used to represent the rotation angle of the lower pointer 21. The control assembly 3 outputs a signal based on the rotation angle of the rotating shaft 31. There are various ways for the control assembly 3 to acquire the rotation angle of the rotating shaft 31 and output a signal (e.g., the optical signal transmission and reception method shown in patent CN206694234U, the magnetic angle sensor method shown in patent CN207989288U, the light-shielding encoder disk method shown in patent CN208024539U, etc.), and these are not the innovations of this utility model; therefore, they will not be elaborated upon in this embodiment.

[0076] The pressure controller provided in this embodiment also includes a mounting bracket 4, which is fixedly installed inside the housing 1. A positioning structure is provided between the mounting bracket 4 and the rotating shaft 31. The positioning structure includes a positioning hole 7 and a positioning shaft 8. One of the positioning hole 7 and the positioning shaft 8 is located on the mounting bracket 4, and the other is located on the positioning shaft 8. The positioning shaft 8 is rotatably connected to the positioning hole 7. The axis of the positioning hole 7 / positioning shaft 8 on the mounting bracket 4 coincides with the design axis of the control component 3. One end of the rotating shaft 31 is connected to the lower pointer 21, and the connection between the rotating shaft 31 and the lower pointer 21 is configured so that when the lower pointer 21 rotates, it drives the rotating shaft 31 to rotate synchronously at the same angle. The axis of the positioning shaft 8 / positioning hole 7 on the rotating shaft 31 coincides with the rotation axis of the rotating shaft 31 itself.

[0077] Thus, by setting a mounting bracket 4 on the housing 1 and a positioning structure between the mounting bracket 4 and the rotating shaft 31, and ensuring that the axis of the positioning hole 7 / positioning shaft 8 on the mounting bracket 4 coincides with the design axis of the control component 3, and that the axis of the positioning shaft 8 / positioning hole 7 on the rotating shaft 31 coincides with the rotation axis of the rotating shaft 31 itself, the rotation axis of the rotating shaft 31 itself can be kept in a position that coincides with the design axis, thereby solving the problem in the prior art where the position error of the lower pointer 21 rotation axis in the pressure gauge component 2 is amplified, leading to the failure of the pressure controller.

[0078] Specifically, the positioning hole 7 is provided on the mounting bracket 4, and the positioning hole 7 is a through hole. The rotating shaft 31 passes through the positioning hole 7 and its two ends extend out of the positioning hole 7 respectively. The part of the rotating shaft 31 located inside the positioning hole 7 is the aforementioned positioning shaft 8.

[0079] One of the rotating shaft 31 and the lower pointer 21 is provided with a first slot 211, and the other is provided with a first locking block 3141. The first locking block 3141 is inserted into and connected to the first slot 211, realizing the connection between the rotating shaft 31 and the lower pointer 21. The first slot 211 / first locking block 3141 on the lower pointer 21 is located on the periphery of the design axis of the control component; the length of the first slot 211 in the circumferential direction of the design axis is greater than the length of the first locking block 3141 in the circumferential direction of the design axis, and the difference is less than 1 mm. In this way, the position of the rotating shaft 31 is positioned by the positioning hole 7 on the mounting bracket 4, and the position of the rotation axis of the lower pointer 21 relative to the housing 1 will not affect the position of the rotating shaft 31 relative to the housing 1. Moreover, the length difference between the first slot 211 and the first locking block 3141 in the circumferential direction of the design axis is less than 1 mm, which ensures that: although there may be a small error between the rotation angle of the lower pointer 21 and the rotation angle of the rotating shaft 31 due to the existence of the length difference, the error is limited to the allowable error range.

[0080] Specifically, in this embodiment, the rotating shaft 31 includes a rotating shaft body 313 and a transmission component 314; the rotating shaft body 313 passes through a positioning hole 7 on the mounting bracket 4, and the transmission component 314 is fixedly connected to the rotating shaft body 313, and the transmission component 314 is provided with a first locking block 3141. The rotation of the lower pointer 21 drives the transmission component 314 to rotate, and the rotation of the transmission component 314 drives the rotating shaft body 313 to rotate.

[0081] like Figure 10 As shown, the lower pointer 21 is provided with a rectangular first slot 211, which is arranged radially along the rotation axis of the lower pointer 21; the transmission component 314 is provided with a cylindrical first block 3141, which is inserted into and connected to the first slot 211.

[0082] like Figures 11 to 13 As shown, the transmission component 314 is provided with a second slot 3142, and one end of the rotating shaft body 313 is provided with a second locking block 3131 that matches the second slot 3142. The second locking block 3131 is engaged with the second slot 3142. Preferably, the second locking block 3131 can be a cylindrical locking block, and the second slot 3142 is a cylindrical slot that matches the second locking block 3131. A flat portion is provided between the cylindrical locking block and the cylindrical slot, so that the rotation of the second slot 3142 can drive the rotation of the second locking block 3131.

[0083] Furthermore, such as Figure 7 As shown, the pressure controller also includes a dial 5 and an upper indicator pointer 6. The end of the rotating shaft 31 not connected to the lower pointer 21 is connected to the upper indicator pointer 6. When the rotating shaft 31 rotates, it drives the upper indicator pointer 6 to rotate synchronously at the same angle, allowing the pressure to be obtained in real time by directly observing the dial 5 and the upper indicator pointer 6. Specifically, the end of the rotating shaft body 313 without the transmission component 314 passes through the dial 5 and is then connected to the upper indicator pointer 6.

[0084] Example 3

[0085] See Figures 15 to 17 This embodiment provides a pressure controller based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that:

[0086] In this embodiment, the rotating shaft 31 includes two rotating shaft members 315 and a transmission assembly. The axes of the two rotating shaft members 315 coincide and are also coincident with the rotation axis of the rotating shaft 31 itself. The two rotating shaft members 315 are disposed on both sides of the mounting bracket 4, and positioning structures are provided between the two side surfaces of the mounting bracket 4 and the two rotating shaft members 315, respectively. The transmission assembly is connected to the two rotating shaft members 315 respectively to realize the synchronous rotation of the two rotating shaft members 315.

[0087] Specifically, the mounting bracket 4 has the aforementioned positioning hole 7 on its surface facing the rotating shaft 315. One end of the rotating shaft 315 is rotatably connected to the positioning hole 7, and the portion of the rotating shaft 315 located inside the positioning hole 7 is the aforementioned positioning shaft 8.

[0088] More specifically, of the two rotating shafts 315, the rotating shaft 315 on the side of the mounting bracket 4 facing the lower pointer 21 has one end for connecting to the lower pointer 21, and the other end is provided with a positioning hole 7 (the positioning hole 7 is a blind hole). The positioning shaft 8 on the surface of the mounting bracket 4 facing the lower pointer 21 is inserted into the positioning hole 7 and rotatably connected. The rotating shaft 315 on the side of the mounting bracket 4 facing the upper pointer 6 has one end for connecting to the upper pointer 6, and the other end is provided with a positioning hole 7 (the positioning hole 7 is a blind hole). The positioning shaft 8 on the surface of the mounting bracket 4 facing the upper pointer 6 is inserted into the positioning hole 7 and rotatably connected.

[0089] The transmission assembly includes two connecting protrusions 316 and a connector 317. The two connecting protrusions 316 are respectively protruding from the sidewalls of the two rotating shafts 315, and the connectors 317 are respectively connected to the two connecting protrusions, so that after the rotating shaft 315 of the mounting bracket 4 facing the lower pointer 21 is driven to rotate by the lower pointer 21, it can drive the rotating shaft 315 of the mounting bracket 4 facing the upper pointer 6 to rotate synchronously.

[0090] More specifically, the connector 317 is a rod. One end of the connector 317 is fixedly connected to the connecting protrusion 316 on the rotating shaft 315 on the side of the mounting bracket 4 facing the upward pointer 6. The connecting protrusion 316 on the rotating shaft 315 on the side of the mounting bracket 4 facing the downward pointer 21 is provided with a slot. The other end of the connector 317 is inserted into the slot to achieve a fixed connection.

[0091] Example 4

[0092] See Figure 15 , Figures 18 to 21 This embodiment provides a pressure controller based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that:

[0093] In this embodiment, the rotating shaft 31 includes two rotating shaft members 315 and a transmission assembly. The axes of the two rotating shaft members 315 coincide and are also coincident with the rotation axis of the rotating shaft 31 itself. The two rotating shaft members 315 are disposed on both sides of the mounting bracket 4, and positioning structures are provided between the two side surfaces of the mounting bracket 4 and the two rotating shaft members 315, respectively. The transmission assembly is connected to the two rotating shaft members 315 respectively to realize the synchronous rotation of the two rotating shaft members 315.

[0094] Specifically, the end face of the rotating shaft 315 facing the mounting bracket 4 is provided with the aforementioned positioning hole 7, and the corresponding surface of the mounting bracket 4 is provided with the aforementioned positioning shaft 8.

[0095] More specifically, of the two rotating shafts 315, the rotating shaft 315 on the side of the mounting bracket 4 facing the lower pointer 21 has one end for connecting to the lower pointer 21, and the other end is inserted into and rotatably connected to the positioning hole 7 (which is a blind hole) provided on the surface of the mounting bracket 4 facing the lower pointer 21; the rotating shaft 315 on the side of the mounting bracket 4 facing the upper pointer 6 has one end for inserting into and rotatably connected to the positioning hole 7 (which is a blind hole) provided on the surface of the mounting bracket 4 facing the upper pointer 6, and the other end is for connecting to the upper pointer 6.

[0096] The transmission assembly includes two connecting protrusions 316 and a connector 317. The two connecting protrusions 316 are respectively protruding from the sidewalls of the two rotating shafts 315, and the connectors 317 are respectively connected to the two connecting protrusions, so that after the rotating shaft 315 of the mounting bracket 4 facing the lower pointer 21 is driven to rotate by the lower pointer 21, it can drive the rotating shaft 315 of the mounting bracket 4 facing the upper pointer 6 to rotate synchronously.

[0097] More specifically, the connector 317 is a rod. One end of the connector 317 is fixedly connected to the connecting protrusion 316 on the rotating shaft 315 on the side of the mounting bracket 4 facing the upward pointer 6. The connecting protrusion 316 on the rotating shaft 315 on the side of the mounting bracket 4 facing the downward pointer 21 is provided with a slot. The other end of the connector 317 is inserted into the slot to achieve a fixed connection.

[0098] Furthermore, in this embodiment, as... Figure 20 and Figure 21 As shown, a triangular first locking block 3111 is formed at one end of the rotating shaft 31, and a triangular first locking groove 211 is provided on the lower pointer 21. The first locking block 3111 on the rotating shaft 31 is inserted into and connected to the first locking groove 211 on the lower pointer 21, thereby realizing the connection between the rotating shaft 31 and the lower pointer 21.

[0099] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A pressure controller, comprising a housing, a pressure gauge assembly, and a control assembly, wherein the pressure gauge assembly and the control assembly are respectively mounted on the housing, characterized in that, It also includes mounting brackets; The mounting bracket is fixedly installed inside the housing; a positioning structure is provided between the mounting bracket and the rotating shaft in the control assembly, the positioning structure including a positioning hole and a positioning shaft, one of the positioning hole and the positioning shaft being provided in the mounting bracket, and the other being provided in the rotating shaft; the positioning shaft is rotatably connected in the positioning hole; The axis of the positioning hole / positioning shaft on the mounting bracket coincides with the design axis of the control component; One end of the rotating shaft is connected to the lower pointer in the pressure gauge assembly, and the connection between the rotating shaft and the lower pointer is configured such that when the lower pointer rotates, it drives the rotating shaft to rotate synchronously at the same angle; the axis of the positioning shaft / positioning hole on the rotating shaft coincides with the rotation axis of the rotating shaft itself.

2. The pressure controller according to claim 1, characterized in that, The positioning hole is provided on the mounting bracket and the positioning hole is a through hole; the rotating shaft passes through the positioning hole and both ends extend out of the positioning hole respectively, and the part of the rotating shaft located in the positioning hole is the positioning shaft.

3. The pressure controller according to claim 1, characterized in that, The rotating shaft includes two rotating shaft components and a transmission assembly; The axes of the two rotating shafts coincide, and also coincide with the rotation axis of the rotating shaft itself; the two rotating shafts are disposed on both sides of the mounting bracket, and the positioning structure is provided between the two side surfaces of the mounting bracket and the two rotating shafts respectively; The transmission assembly is connected to the two rotating shafts respectively to achieve synchronous rotation of the two rotating shafts.

4. The pressure controller according to claim 3, characterized in that, The pivot member has a positioning hole on one end face facing the mounting bracket, and a corresponding positioning shaft is protruding on the corresponding surface of the mounting bracket. or, The mounting bracket has a positioning hole on its surface facing the rotating shaft. One end of the rotating shaft is rotatably connected to the positioning hole, and the portion of the rotating shaft located inside the positioning hole is the positioning shaft.

5. The pressure controller according to claim 3, characterized in that, The transmission assembly includes: Two connecting protrusions are respectively protruding from the sidewalls of the two rotating shafts; A connector, which is connected to each of the two connecting protrusions.

6. The pressure controller according to claim 1, characterized in that, One of the rotating shaft and the lower pointer is provided with a first slot, and the other is provided with a first block; the first block is inserted into and connected to the first slot. There is a gap between at least a portion of the outer sidewall of the first card block and the inner sidewall of the corresponding first card slot.

7. The pressure controller according to claim 6, characterized in that, The gap between the first card block and the first card slot is less than 1 mm.

8. The pressure controller according to claim 1, characterized in that, One of the rotating shaft and the lower pointer is provided with a first slot, and the other is provided with a first block; the first block is inserted into and connected to the first slot. The first slot / first block on the lower pointer is located on the periphery of the design axis of the control component; the length of the first slot in the circumferential direction of the design axis is greater than the length of the first block in the circumferential direction of the design axis and the difference is less than 1 mm.

9. The pressure controller according to claim 8, characterized in that, The rotating shaft includes a rotating shaft body and a transmission component; the positioning structure is disposed on the rotating shaft body, the transmission component is fixedly connected to the rotating shaft body, and the transmission component is provided with the first locking block / first locking groove.

10. The pressure controller according to claim 9, characterized in that, The transmission component is provided with a cylindrical first locking block, and the lower pointer is provided with a rectangular first locking slot.

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