A pressure regulating device and a pump

Abstract

This utility model discloses a pressure regulating device, comprising: a shell, a pressure regulating component, and a window. The shell has an air inlet, an air outlet, a pressure relief port, and an inner cavity. The pressure regulating component is partially housed within the inner cavity and includes: a separator, a pressure-blocking component, an elastic component, a driving component, and a guide component. The separator is adjustablely positioned within the shell. The inner cavity includes region A and region B, located on opposite sides of the separator. The air inlet and outlet are located in region A. The pressure-blocking component is located in region B. The elastic component applies a thrust to the separator and the pressure-blocking component. The driving component controls the position of the pressure-blocking component. The guide component contacts and limits the pressure-blocking component and guides it to move linearly. The window is located within the shell. By employing the pressure regulating component design, the preload pressure of the separator on the gas in region A can be precisely controlled by adjusting the position of the elastic component. Combined with the pressure relief port, this forms a closed-loop pressure regulation structure, achieving dynamic adjustment of the pressure threshold and high-precision constant pressure control.

Description

Technical Field

[0001] This utility model relates to the field of air pump technology, and in particular to an air pressure regulating device. Background Technology

[0002] An air pump is a portable inflation tool that uses mechanical compression to deliver gas. Its core structure consists of a cylinder, piston, handle, air hose, and nozzle. During operation, the piston moves axially within the cylinder by reciprocating push and pull of the handle. When the piston is pulled back, the volume of the cylinder increases, creating negative pressure, and external air enters the cavity through a one-way inlet valve. When pushed forward, the piston compresses the gas, increasing the pressure within the cavity, opening the one-way outlet valve, and compressed air is then directed into target containers such as tires and air cushions through the air hose and nozzle.

[0003] Current tire pumps typically rely on a pressure gauge to determine real-time tire pressure. However, different application scenarios have varying requirements for tire pressure, necessitating users to continuously monitor the gauge's position to control the inflation process. Since traditional pressure gauges are usually located at the base of the pump, and users are typically upright during inflation, it's difficult to observe the gauge, especially in low-light environments such as underground parking spaces or at night, significantly increasing the difficulty of reading the scale. This design flaw not only exacerbates user eye strain but can also lead to inaccurate tire pressure control due to reading errors, affecting both safety and the overall user experience. Utility Model Content

[0004] This application provides a pressure regulating device that, by setting up pre-pressurization and depressurization structures, automatically releases air when the pressure reaches a set value, eliminating the need for the user to continuously monitor the pressure gauge. This effectively avoids operational errors caused by visual difficulties in low-light environments or special usage scenarios, improving the accuracy of inflation operations while enhancing the ease of use of the product. This application also provides an air pump that employs the aforementioned pressure regulating device.

[0005] The first aspect of this application provides a pressure regulating device, comprising:

[0006] The outer casing has an air inlet, an air outlet, a pressure relief port, and an inner cavity;

[0007] A voltage regulating assembly, wherein a portion of the voltage regulating assembly is housed within the inner cavity;

[0008] The voltage regulating component includes:

[0009] A separator is adjustablely disposed in the housing. The inner cavity includes region A and region B, which are located on both sides of the separator. The air inlet and air outlet are located in region A.

[0010] A pressure-retaining element is provided in region B;

[0011] The elastic element contacts the separator and the pressing element, and applies a thrust to both.

[0012] A driving member is connected to the pressing member, and the driving member is used to control the position of the pressing member, thereby controlling the compression amount of the elastic member;

[0013] A guide member contacts and limits the movement of the pressing member, and is used to guide the pressing member to move in a straight line;

[0014] A window is provided on the housing and is used to display the position of the pressure member.

[0015] The beneficial effects of the above embodiments are as follows:

[0016] (1) The design of the pressure regulating component is adopted. By adjusting the position of the elastic element, the preload pressure of the separator on the gas in area A is precisely controlled. Combined with the pressure relief port, a closed-loop pressure regulation structure is formed to realize the dynamic adjustment of the gas pressure threshold and high-precision constant pressure control.

[0017] (2) Configure a visual form structure to facilitate users in configuring pressure thresholds, reduce the time users spend looking at the meter while inflating, and improve overall efficiency;

[0018] (3) The guide component guides the pressure-reducing component to move in a straight line, which significantly improves the stability of the pressure regulating component and its working durability.

[0019] Based on the above embodiments, the embodiments of this application can be further improved as follows:

[0020] In one embodiment of this application, the driving member is threadedly connected to the housing. The beneficial effect of this step is that it enables stepless adjustment of the position of the pressing member and improves the accuracy of position adjustment.

[0021] In one embodiment of this application, the end of the drive member extending outside the housing has a knob. The advantage of this step is that it facilitates user rotation of the drive member, thereby improving the ease of use of the product.

[0022] In one embodiment of this application: the housing has a limiting structure inside, which limits the contact of the separator, ensuring that the air inlet and outlet are always located in region A. The beneficial effect of this step is that limiting the separator by the limiting structure improves the stability of the separator's positioning.

[0023] In one embodiment of this application, the window is provided with scales along the movement direction of the pressure-receiving member. The beneficial effect of this step is that it allows users to more intuitively understand the pressure threshold.

[0024] In one embodiment of this application, it further includes a valve, disposed on one side of the air outlet, and used to control the opening and closing of the air outlet. The beneficial effect of this step is that the valve allows gas to temporarily accumulate in region A, thereby increasing the gas pressure in region A, and opening the valve creates a burst-like discharge effect.

[0025] In one embodiment of this application, it further includes a reminder element, connected to the housing, used to send a signal when the pressure threshold is reached in region A. The advantage of this step is that it allows the user to directly know the pressure threshold.

[0026] In one embodiment of this application, the reminder component includes a vibration generator connected to the pressure relief port. The advantage of this step is that the vibration generator has a simple structure and requires no power supply.

[0027] In one embodiment of this application: the alerting element includes: a trigger switch disposed at the pressure relief port; and an alarm installed in the housing and connected to the trigger switch via an electrical control signal. The beneficial effect of this step is that the integrated structure formed by the trigger switch and the alarm achieves high detection accuracy.

[0028] A second aspect of this application provides an air pump, including the aforementioned air pressure regulating device. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0030] Figure 1 This is a three-dimensional structural schematic diagram of a pressure regulating device;

[0031] Figure 2 This is a two-dimensional structural diagram of a pressure regulating device;

[0032] Figure 3 for Figure 2 Sectional view along the middle AA;

[0033] Figure 4 This is a three-dimensional structural diagram of an air pump.

[0034] Among them, 1 is the outer shell, 101 is the air inlet, 102 is the air outlet, 103 is the pressure relief port, 104 is area A, 105 is area B, and 106 is the limiting structure.

[0035] 2. Pressure regulating component, 201. Separator, 202. Pressing component, 203. Elastic component, 204. Driving component, 205. Guide component;

[0036] 3 Forms, 4 Gas Tanks. Detailed Implementation

[0037] In this application, unless otherwise expressly specified and limited, the terms used should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. If electrical or electronic equipment is involved, it can also refer to an electrical connection or a communication signal connection, etc. For those skilled in the art, the specific meaning of different terms in this utility model can be understood according to the specific circumstances, and the scope of the specific meaning should be limited to achieving the function of this application.

[0038] In the description of this application, it should be understood that the directional terms or positional relationships described are based on the orientation or positional relationships shown in the accompanying drawings, or based on the orientation or positional relationships in actual use, and are only for the purpose of facilitating the description of the contents of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Example 1

[0040] like Figure 1-3 As shown, a pressure regulating device includes: a housing 1, a pressure regulating component 2, and a window 3. The housing 1 has an air inlet 101, an air outlet 102, a pressure relief port 103, and an inner cavity. The pressure regulating component 2 is partially housed in the inner cavity. The pressure regulating component 2 includes: a separator 201, a pressing component 202, an elastic component 203, a driving component 204, and a guide component 205. The separator 201 is adjustablely positioned within the housing 1. The inner cavity includes region A104 and region B105, which are located on opposite sides of the separator 201. The air inlet 101... The air outlet 102 is located in area A104, the pressing member 202 is located in area B105, one end of the elastic member 203 contacts the separator 201 and the other end contacts the pressing member 202, and applies a thrust to both. The driving member 204 is connected to the pressing member 202 and is used to control the position of the pressing member 202, thereby controlling the compression of the elastic member 203. The guide member 205 contacts and limits the pressing member 202 and is used to guide the pressing member 202 to move in a straight line. The window 3 is located in the outer shell 1 and is used to display the position of the pressing member 202.

[0041] Specifically, such as Figure 3As shown, the outer shell 1 is a cylindrical structure. In addition, the outer shell 1 can also be other shapes, such as a polygonal columnar structure, an elliptical columnar structure, etc. This embodiment takes a cylinder as an example for description. The outer shell 1 includes: a shell and an end cap. The end cap is installed on the upper end of the shell. The lower end of the shell is an air inlet 101. In the height direction from bottom to top, the surface of the shell is also provided with an air outlet 102 and a pressure relief port 103 in sequence. The inner cavity structure is formed inside the outer shell 1. The partition 201 divides the inner cavity into regions A104 and B105 whose volumes change dynamically with the position of the partition 201.

[0042] Specifically, such as Figure 3 As shown, the separator 201 is a piston, which is vertically slidably inserted into the inner cavity. The elastic element 203 is a compression spring, such as a cylindrical compression spring. The elastic element 203 is placed above the piston. The pressing element 202 is a plate-shaped structure. The pressing element 202 applies downward pressure to the compression spring, so that the piston can generate pre-pressure on the gas in region A104.

[0043] Specifically, the air pressure regulating device also includes: a first seal, which is disposed between the separator 201 and the outer casing 1.

[0044] Specifically, the first sealing element is a sealing ring, and a sealing ring groove is opened on the outer circumferential surface of the piston. The sealing ring is stuck in the sealing ring groove, thereby forming a good sealing structure between the sealing ring piston and the inner wall of the outer shell 1.

[0045] Specifically, such as Figure 3 As shown, the guide member 205 is slidably inserted into the pressing member 202, and there are multiple guide members 205, which are evenly distributed on the same circumference with the axis of the driving member 204 as the center line.

[0046] Specifically, such as Figure 3 As shown, the guide member 205 is a rod-shaped structure. There are two guide members 205, which are centrally symmetrically arranged on both sides of the drive member 204. The lower end of the guide member 205 is connected to the piston, and the upper end of the guide member 205 is slidably inserted into the corresponding through hole of the pressing member 202. The symmetrical arrangement of the guide members 205 makes the pressing member 202 bear force evenly, thereby improving the stability of the pressing member 202 and the separator 201 in vertical displacement movement.

[0047] When in use, this pressure regulating device pumps gas into region A104 through inlet 101 and into the object being inflated through outlet 102. During inflation, the gas pressure in region A104 gradually increases. When the pressure exceeds the pre-pressure of the piston, the piston slides upward until it reaches the pressure relief port 103, which connects with region A104. The gas is then discharged through the pressure relief port 103, thus achieving constant pressure inflation. When the inflation pressure needs to be changed, the position of the pressure-blocking member 202 can be adjusted by changing the position of the pressure-blocking member 202 through the driving member 204, thereby adjusting the pre-pressure of the separator 201 and changing the inflation pressure of the object being inflated.

[0048] Example 2

[0049] Based on Example 1, such as Figure 3 As shown, the drive component 204 is threadedly connected to the housing 1.

[0050] Specifically, as shown in the figure, the end cap has a threaded hole along the axis, and the drive component 204 includes a screw structure, which is threadedly connected to the threaded hole.

[0051] Specifically, such as Figure 3 As shown, the end of the drive member 204 extending to the outside of the housing 1 has a knob, which allows the user to rotate the drive member 204, thereby improving the ease of use of the product.

[0052] Specifically, such as Figure 3 As shown, the pressing member 202 has a disc-shaped structure, and the screw structure is arranged along the axis of the pressing member 202 and rotates to abut against the pressing member 202, or is rotatably connected (such as through a bearing).

[0053] Specifically, the drive component 204 uses a hand-tightening screw, and the stud end of the hand-tightening screw is rotated to abut or rotated to connect with the pressing component 202, or the screw structure, knob, and pressing component 202 are integrally formed.

[0054] Example 3

[0055] Based on any of the above embodiments, such as Figure 3 As shown, the outer casing 1 has a limiting structure 106 inside, which limits the contact of the separator 201, so that the air inlet 101 and the air outlet 102 are always located in region A104.

[0056] Specifically, such as Figure 3 As shown, the limiting structure 106 is a ring structure protruding from the inner wall of the outer shell 1. The protrusion is located above the air outlet 102 and below the pressure relief port 103. When the piston contacts the protruding structure, the pressure relief port 103 is located above the piston.

[0057] Example 4

[0058] Based on any of the above embodiments, the air pressure regulating device further includes: a valve, which is disposed on one side of the air outlet 102 and is used to control the opening and closing of the air outlet 102.

[0059] Specifically, the air outlet 102 is connected to a pipe via a valve, which can be a ball valve.

[0060] When this type of air pressure regulating device is installed on an air cylinder, the gas can be temporarily accumulated in area A104 and air tank 4 through the valve. When the air pressure reaches the set value, the valve is opened manually, and the high-pressure gas is released instantly into the collapsed inner tube. This can quickly inflate all parts of the tire, eliminate the wrinkles caused by the collapse, and create a burst effect. Taking an air cylinder as an example, when this type of air pressure regulating device is installed on an air cylinder, the gas rushes into the tire instantly, making all parts of the deflated tire evenly and quickly inflated. This avoids problems such as uneven expansion and wrinkles caused by slow inflation. (For tires that are already severely deflated, the inner tube and outer tire separate, creating a gap. Due to the friction between the inner and outer tire surfaces, the inner tube cannot expand freely. At this time, it is difficult to manually pump in air. Generally, an air compressor is needed, and local inflation is prone to squeezing, wrinkles, and wear.)

[0061] Example 5

[0062] Based on any of the above embodiments, such as Figure 1 As shown, the form 3 has a scale along the movement direction of the pressing member 202.

[0063] Specifically, the window 3 is a transparent structure. The window 3 and the outer shell 1 can be an integral molded structure or an assembled structure. The scale is set along the outer surface of the window in the height direction. The upper end of the pressure member 202 corresponds to the pressure value in area A104. The scale makes it easier for users to understand the pressure threshold more intuitively.

[0064] Example 6

[0065] Based on any of the above embodiments, the air pressure regulating device further includes: a reminder element connected to the housing 1, which is used to send a signal to the outside when the pressure threshold is reached in region A104.

[0066] Specifically, the reminder device includes a vibrating whistle connected to the pressure relief port 103. The whistle makes a sound when gas flows through it, thus reminding the user.

[0067] Alternatively, the reminder components include: a trigger switch and an alarm. The trigger switch can be a micro switch, located on the inner wall of the housing 1 at the same height as the pressure relief port 103. The trigger switch is activated by the movement of the separator 201, which touches the detection end of the trigger switch, thereby generating a corresponding electrical signal. The alarm is installed in the housing 1 and connected to the trigger switch via electrical control signals. The trigger switch is installed in the housing 1 and connected to the controller. The controller can be a microprocessor powered by a power supply, which can be a 1 / 2 octane battery or a 2 / 3 octane battery. The alarm is an audible and visual alarm, connected to the controller via electrical control signals. When the pressure value in area A104 reaches the set pressure threshold, the separator 201 touches the micro switch. The controller receives the electrical signal and controls the audible and visual alarm to emit an audible and visual signal, reminding the user that the air pressure has reached the required value and no further air inflation is needed, thus achieving a worry-free and labor-saving effect.

[0068] Example 7

[0069] A type of air pump, such as Figure 4 As shown, a pressure regulating device including any of the foregoing embodiments is included.

[0070] Specifically, the base of the air pump has a threaded mounting groove, and a second sealing element is placed in the threaded mounting groove. The second sealing element is a sealing ring or a sealing gasket. The lower end of the outer shell 1 is threadedly connected to the threaded mounting groove and tightly presses against the second sealing element. The air inlet of the air pump is located at the center of the threaded mounting groove and is connected to the air inlet 101 of the outer shell 1. The air pump tube is installed at the air outlet 102.

[0071] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A pressure regulating device, characterized in that, include: The outer casing has an air inlet, an air outlet, a pressure relief port, and an inner cavity; A voltage regulating assembly, wherein a portion of the voltage regulating assembly is housed within the inner cavity; The voltage regulating component includes: A separator is adjustablely positioned within the housing. The inner cavity includes region A and region B, which are located on opposite sides of the separator. The air inlet and air outlet are located in region A. A pressure-retaining element is provided in region B; The elastic element contacts the separator and the pressing element, and applies a thrust to both. A driving member is connected to the pressing member, and the driving member is used to control the position of the pressing member, thereby controlling the compression amount of the elastic member; A guide member contacts and limits the movement of the pressing member, and is used to guide the pressing member to move in a straight line; A window is provided on the housing and is used to display the position of the pressure member.

2. The air pressure regulating device according to claim 1, characterized in that, The drive component is threadedly connected to the housing.

3. The air pressure regulating device according to claim 2, characterized in that, The end of the drive unit that extends to the outside of the housing has a knob.

4. The air pressure regulating device according to claim 1, characterized in that, The outer shell has a limiting structure inside, which limits the contact of the separator, so that the air inlet and air outlet are always located in the region A.

5. The air pressure regulating device according to claim 1, characterized in that, The window is marked with graduations along the direction of movement of the pressing member.

6. The air pressure regulating device according to claim 1, characterized in that, Also includes: A valve is located on one side of the air outlet and is used to control the opening and closing of the air outlet.

7. The air pressure regulating device according to claim 1, characterized in that, Also includes: A reminder device, connected to the housing, is used to send a signal when the pressure threshold in area A is reached.

8. The air pressure regulating device according to claim 7, characterized in that, The reminder device includes a vibration generator connected to the pressure relief port.

9. The air pressure regulating device according to claim 7, characterized in that, The reminder includes: A trigger switch is located at the pressure relief port; An alarm is installed in the housing and connected to the trigger switch electrical control signal.

10. An air pump, characterized in that, The air pressure regulating device includes any one of claims 1-9.

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