Pressure display device with adjustment function in air compressor
The integration of a pressure display device with an adjustable mechanism into air compressors addresses the issue of inaccurate pressure readings by allowing for precise adjustment of the pressure gauge's position, enhancing operational convenience and accuracy.
Patent Information
- Application Number
- JP2025001117U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Conventional air compressors lack a mechanism for accurate pressure adjustment, as the relative position between the pressure gauge and the pointer cannot be easily adjusted, leading to potential inaccuracies in pressure readings.
A pressure display device with an adjustment function is integrated into the air compressor, featuring a main body with slide grooves and a knob mechanism that allows the indicator and pressure gauge to be linearly moved and adjusted relative to each other.
This solution enables precise adjustment and correction of the pressure gauge's position, ensuring accurate pressure readings and improving the convenience of assembly and operation by allowing for on-site calibration without disassembly.
Smart Images
Figure 0003251637000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a pressure display device with an adjustment function in an air compressor, and particularly to a pressure display device with an adjustment function in an air compressor that can obtain accurate pressure through fine adjustment by being able to adjust or correct the relative position of the pressure gauge of the indicator and the pointer at any time.
Background Art
[0002] Articles using automobile tires or various air injection devices (such as air beds, rubber boards, etc.) can effectively save manpower and time mainly by injecting air with an air compressor (or an air injection device). In addition, for automobile tires, it is particularly necessary to use an air compressor as an air injection device, so that the air pressure of the tire can be accurately controlled to prevent insufficient air pressure in the tire, thereby enhancing the safety in vehicle driving.
[0003] The operating principle of an air compressor is mainly that an internal electric motor directly drives a crankshaft to generate a rotational motion on the crankshaft, and further drives a connecting rod to reciprocate a piston up and down. Thereby, the volume of the cylinder changes, and the pressurized gas can be compressed and discharged to inject air into an object.
[0004] However, when it is necessary to add a pressure gauge to a conventional air compressor, it is necessary to separately add a vent port to the cylinder of the air compressor. Further, a plastic pipeline is separately arranged, one end of the plastic pipeline is connected to the vent port of the cylinder, and the other end of the plastic pipeline is connected to the pressure gauge. Then, in order to fix both ends of the plastic pipeline to the connection parts of the cylinder and the pressure gauge, fixing parts are installed to attach the pressure gauge.
Summary of the Invention
Problems to be Solved by the Invention
[0005] The purpose of the present invention is to provide a pressure display device with an adjustment function in an air compressor that can obtain accurate pressure through fine adjustment by being able to adjust or correct the relative position between the pressure gauge of the indicator and the pointer at any time.
Means for Solving the Problems
[0006] The pressure display device with an adjustment function in the air compressor of the present invention communicates with the cylinder of a predetermined air compressor and consists of a main body, an indicator, and a pointer mechanism. The main body is provided with a housing space and a connecting pipe communicating with the housing space. One end of the connecting pipe is provided with a first pipe opening in the external direction, and the other end of the connecting pipe is provided with a second pipe opening in the direction of the housing space. Thus, the first pipe opening of the connecting pipe and the cylinder of the air compressor communicate, and the main body is provided with two corresponding side walls, and corresponding first slide grooves are respectively provided on the inner wall surfaces of the two side walls. Among them, a second slide groove is provided below the first slide groove in one of them. The indicator is connected to the main body, the pressure gauge is connected, and slide portions are respectively provided on two corresponding sides of the indicator. By connecting the two slide portions and the two first slide grooves of the main body corresponding to each other, the indicator can linearly move between the two side walls of the main body. A slide bar extends and is provided on one side of the indicator. The slide bar is correspondingly positioned in the second slide groove of the main body and is connected with a knob. The pointer mechanism is provided in the connecting pipe of the main body, and a pointer is connected to the pointer mechanism. The pointer is provided outside the connecting pipe and is located in the housing space. Further, the pointer is located within the area of the pressure gauge of the indicator.
Effects of the Invention
[0007] The slide bar and the knob of the indicator are each provided with a thread, so that the knob can be screwed and rotated on the slide bar. When the knob is rotated in the direction of the bottom end of the slide bar (i.e., the locked state), the knob is closely pressed against the side wall of the main body. At this time, the indicator is fixed and connected to the main body. On the contrary, when the knob is rotated in the direction of the top end of the slide bar (i.e., the unlocked state), the knob is not closely pressed against the side wall of the main body. At this time , the indicator can move left and right between the two side walls of the main body to adjust or correct its position.
Brief Description of the Drawings
[0008]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Modes for Carrying Out the Invention
[0009] Refer to Figures 1 to 6 in combination. Figures 1 to 6 show a pressure display device with an adjustment function in an air compressor connected to an air compressor disclosed by the present invention. In the air compressor 4, a cylinder 41 is provided, and at least two ventilation pipes 411 are provided in the cylinder 41. Inside the cylinder 41 of the air compressor 4, a piston mechanism 42 is provided. The piston mechanism 42 is connected to a motor 43, and the piston mechanism 42 is driven by the motor 43. An air injection device 5 is connected to the air compressor 4 through one ventilation pipe 411. However, since the details of the structure and the operating method of the air compressor 4 are not the technical features of the present invention, no detailed description will be given here.
[0010] The pressure display device with an adjustment function in the air compressor disclosed by the present invention comprises a main body 1, an indicator 2, and a pointer mechanism 3.
[0011] The main body 1 is provided with a storage space 10 and a connecting pipe 11 communicating with the storage space 10. One end of the connecting pipe 11 is provided with a first pipe orifice 111 facing the outside, and the other end is provided with a second pipe orifice 112 facing the direction of the storage space 10. The main body 1 communicates with a ventilation pipe 411 provided in the cylinder 41 of the air compressor 4 through the first pipe orifice 111 of the connecting pipe 11 (shown in Figure 3). The main body 1 is provided with two corresponding side walls 12, and corresponding first slide grooves 121 are respectively provided on the inner wall surfaces of the two side walls 12. Among them, a second slide groove 122 is separately provided below the first slide groove 121 in the side wall 12 (shown in Figures 4 and 5). Further, a baffle plate 13 is connected and provided at the bottom surface position of the storage space 10 in the main body 1.
[0012] The indicator 2 is connected to the main body 1. Inside the indicator 2, an installation space 20 with an opening is provided. A pressure gauge 21 is provided in the installation space 20 (shown in FIG. 6), so the pressure gauge 21 is connected to the indicator 2. On two corresponding sides of the indicator 2, slide parts 22 are respectively provided. The slide parts 22 on both sides of the indicator 2 are correspondingly connected to the first slide grooves 121 of the two side walls 12 of the main body 1, so that the indicator 2 can linearly move left and right between the two side walls 12 of the main body 1. Also, on one side of the indicator 2, a slide rod 23 is provided extending. A knob 24 is connected to the slide rod 23 in the second slide groove 122 corresponding to the main body 1. Threads are provided on the slide rod 23, and threads are also provided inside the knob 24, so that the knob 24 can rotate clockwise or counterclockwise on the slide rod 23. The indicator 2 is made of a transparent material, so that the numerical values or scales provided on the pressure gauge 21 can be clearly seen. The surface of the pressure gauge 21 is provided with a fluorescent paint or made of a fluorescent material.
[0013] The pointer mechanism 3 is installed in the connecting pipe 11 of the main body 1, and includes a piston 31, a push rod 32, a spring 33, a cover part 34, and a pointer 35. One end of the piston 31 is connected to the push rod 32, and a spring 33 is further fitted to the one end where the piston 31 and the push rod 32 are connected, so that the spring 33 is located relative to the outside of the push rod 32. The cover part 34 is hermetically connected to the second pipe opening 112 of the connecting pipe 11, and a perforation 341 is provided on the cover part 34, so that the other end of the push rod 32 extends through the perforation 341 to the outside of the connecting pipe 11 and is connected to the pointer 35. That is, the pointer 35 is connected to the pointer mechanism 3, and the pointer 35 is installed outside the connecting pipe 11 and is located in the accommodation space 10. Further, the pointer 35 is correspondingly located within the area of the pressure gauge 21 of the indicator 2.
[0014] When gas is sent out from the ventilation pipe 411 of the cylinder 41 in the air compressor 4, the gas flows in from the first pipe opening 111 of the connecting pipe 11 and pushes the piston 31. Further, the piston 31 moves the push rod 32 and the pointer 35 in sequence. The pointer 35 is positioned corresponding to the numerical value or scale range provided on the pressure gauge 21, that is, the current air pressure value of the tire is displayed.
[0015] When the knob 24 is rotated in the direction of the bottom end of the slide bar 23 (that is, in the locked state), the knob 24 closely presses against the side wall 12 of the main body 1. At this time, the indicator 2 is fixed and connected to the main body 1. On the contrary, when the knob 24 is rotated in the direction of the top end of the slide bar 23 (that is, in the unlocked state), the knob 24 does not closely press against the side wall 12 of the main body 1. At this time, the indicator 2 moves left and right between the two side walls 12 of the main body 1 to finely adjust the position (shown in Figure 4).
[0016] Therefore, the main technical feature of the present invention is that the indicator 2 can linearly move between the two side walls 12 of the main body 1. A slide bar 23 is provided extending on the indicator 2, and a knob 24 is fitted on the slide bar 23. Thereby, the indicator 2 can move left and right in the main body 1 for adjustment and fixation. For example, when it is necessary to correct the accuracy of the assembled pressure display device (that is, when the pointer 35 does not return to 0), after moving the indicator 2 left and right by the slide bar 23, tighten the knob 24 to fix the position of the indicator 2. Further, adjust the relative position between the pressure gauge 21 and the pointer 35 of the indicator 2 so that the pointer 35 points to the 0 position of the pressure gauge 21. Thereby, the accuracy of the pressure display device can be immediately corrected or finely adjusted. Since it is not necessary to disassemble the pressure display device again for calibration of the accuracy, the convenience in assembly and operation is improved.
Description of Reference Numerals
[0017] 1 Main body 10 Accommodation space 11 Connecting pipe 111 First pipe opening 112 Second pipe opening 12 Side wall 121 First slide groove 122 Second slide groove 13 Baffle plate 2 Indicator 20 Installation space 21 Pressure gauge 22 Slide part 23 Slide rod 24 Knob 3 Pointer mechanism 31 Piston 32 Push rod 33 Spring 34 Cover part 341 Perforation 35 Pointer 4 Air compressor 41 Cylinder 411 Vent pipe 42 Piston mechanism 43 Motor 5 Air injection device
Claims
1. A pressure display device with an adjustment function in an air compressor, which is connected to the cylinder of a specific air compressor, The pressure display device comprises a body, an indicator, and a pointer mechanism; The main body is provided with an accommodating space and a connecting pipe communicating with the accommodating space, one end of the connecting pipe is provided with a first pipe port facing the outside and the other end of the connecting pipe is provided with a second pipe port facing the accommodating space, the first pipe port of the connecting pipe communicates with a cylinder of the air compressor, the main body is provided with two side walls corresponding to each other, and first slide grooves corresponding to each other are provided on inner wall surfaces of the two side walls, and a second slide groove is provided below the first slide groove in one of the two side walls, The indicator is connected to the main body, and a pressure gauge is connected to the indicator. Slide parts are provided on two corresponding sides of the indicator, and the two slide parts and the two first slide grooves are connected to each other, so that the indicator moves linearly on the main body. A slide bar is provided extending from one side of the indicator, and the slide bar is located in the second slide groove and connected to a knob. the pointer mechanism is installed in the connecting pipe, a pointer is connected to the pointer mechanism, the pointer is provided outside the connecting pipe and is located within the accommodation space, and the pointer is located opposite to the pressure gauge within the area of the pressure gauge; When the knob is rotated toward the bottom end of the slide rod, the knob and the side wall of the body are tightly pressed against each other and fixed, and the indicator is fixedly connected to the body.
2. 2. The pressure display device with an adjustment function for an air compressor as described in claim 1, characterized in that an installation space with an opening is provided inside the indicator, and the pressure gauge is provided in the installation space.
3. The pressure indicator device with adjustable function for an air compressor as claimed in claim 2, characterized in that the indicator is made of a transparent material and the surface of the pressure gauge is provided with fluorescent paint.
4. The pressure indicator device with adjustable function in an air compressor as claimed in claim 2, characterized in that the indicator is made of transparent fluorescent material.
5. 2. The pressure indicator device with adjustment function for an air compressor as described in claim 1, characterized in that the slide rod is provided with a screw thread and the knob is provided with a screw thread inside, so that the knob rotates clockwise or counterclockwise on the slide rod.
6. 2. The pressure indicator device with adjustment function for an air compressor according to claim 1, wherein the pointer mechanism comprises a piston, a push rod, a spring, a cover part, and the pointer, the push rod is connected to one end of the piston, and the spring is further fitted to one end where the piston and the push rod are connected, the spring being positioned opposite to an exterior of the push rod, the cover part being hermetically connected to a second port of the connecting pipe, a perforation being formed in the cover part, and the other end of the push rod extending to the exterior of the connecting pipe through the perforation and connected to the pointer.
7. 2. The pressure display device with an adjustable function for an air compressor according to claim 1, wherein a baffle plate is connected to a bottom surface of the accommodation space in the main body.
8. 2. The pressure display device with an adjustment function for an air compressor according to claim 1, wherein the cylinder of the air compressor is provided with at least two vent pipes, and the main body is connected to the vent pipes provided in the cylinder through the first pipe port of the connecting pipe.