WO2015021664A1

WO2015021664A1 - Rotating disc-type barometer and tyre inflator pump having same

Info

Publication number: WO2015021664A1
Application number: PCT/CN2013/081983
Authority: WO
Inventors: 邝新华
Original assignee: 广州市安途电器有限公司
Priority date: 2013-08-15
Filing date: 2013-08-21
Publication date: 2015-02-19
Also published as: CN203365042U

Abstract

A rotating disc-type barometer (100) and a tyre inflator pump having the barometer (100). The rotating disc-type barometer (100) is provided with a core body (110) and an indicator disc (118); the core body (110) is provided with a cavity (112), an inlet (113), a spring (114), a piston assembly (115), a movement rod (116) and a driving part (117). One end of the cavity (112) is the inlet (113) and the other end of the cavity (112) is an outlet. The movement rod (116), the spring (114) and the piston assembly (115) are all arranged in the cavity (112). The movement rod (116) is provided with a movement end (1161) and a driving end (1163). The piston assembly (115) is fixedly arranged at the movement end (1161) and the piston assembly (115) is in seal fit with the internal wall surface of the cavity (112). The driving end (1163) of the movement end (116) protrudes out of the cavity (112) from the outlet and is partly exposed out of the cavity (112). The driving end (1163) cooperates with the driving part (117). The driving part (117) drives a pointer of the indicator disc (118) to rotate. The spring (114) is sleeved on the movement rod (116) and the two ends of the spring (114) are abutted with the piston assembly (115) and the outlet end of the cavity (112) respectively. The rotating disc-type barometer and the tyre inflator pump having the barometer are simple in structure and have high pressure detection precision and low cost.

Description

Rotary type air pressure meter and tire air pump with the same

The utility model relates to the technical field of automobile tire repairing devices, in particular to a rotary air pressure meter and a tire air pump having the same. This application is based on the Chinese patent application with the application number 201320496017.1 and the application date August 15, 2013.

Background technique

Air pump is one of the most important basic tools in the field of transportation. Simple and accurate detection of air pressure during inflation of tires and the like is an important factor in ensuring effective inflation.

In the prior art, the principles applied to the barometer for detecting the air pressure are different, and there are mainly three types of poppet type, diaphragm type and electronic digital type barometer. With the popularization and development of vehicles and other vehicles, the miniaturization, precision, and portability of air pumps have gradually become a new development trend. Correspondingly, the barometer used with the air pump is also required to have the characteristics of simple structure, accuracy, and low cost. However, the prior art barometers have the disadvantages of high cost and low precision whether they are spring tube type or diaphragm type or electronic digital display type.

Therefore, in view of the deficiencies of the prior art, it is necessary to provide a rotary disc type air pressure meter having a simple structure, high detection precision, and low cost, and a tire air pump having the air pressure gauge to overcome the disadvantages of the prior art. Summary of the invention

One of the objects of the present invention is to provide a rotary disk type air pressure gauge which avoids the deficiencies of the prior art, and which has the characteristics of simple structure, high air pressure detection accuracy and low cost.

The above object of the present invention is achieved by the following technical means.

A rotary dial pressure meter provided with a core body and an indicator disk;

The core body is provided with a cavity, an air inlet, a spring, a piston assembly, a moving rod and a driving member, one end of the cavity is an air inlet, and the other end of the cavity is an outlet;

The moving rod, the spring and the piston assembly are both mounted on the cavity, and the moving rod is provided with a moving end and a driving end; The piston assembly is fixedly mounted on the moving end and the piston assembly is sealingly engaged with an inner wall surface of the cavity;

a driving end of the moving rod protrudes from the outlet from the cavity and is partially exposed to the cavity, the driving end cooperates with the driving component, and the driving component drives the pointer of the indicator disk Rotating; the spring is sleeved on the moving rod, and two ends of the spring are respectively abutted with one end of the piston assembly and the outlet of the cavity.

The core body is further provided with a frame body, and the cavity, the driving member and the indicator disk are respectively mounted on the frame body.

The driving end of the moving rod is provided with a plurality of saw teeth, the driving member is disposed as a gear, the gear shaft of the gear is movably mounted on the frame body, the pointer is fixedly mounted on the gear shaft, and the saw tooth and the seat The gears match,

When the moving rod moves along the cavity, the saw tooth drives the gear to rotate, so that the gear shaft rotates, and the gear shaft drives the pointer to rotate on the indicator disk for pressure display.

The moving end is provided with a fitting boss, the piston is provided with a fitting groove, and the fitting boss is sealingly fitted with the fitting groove.

The moving end and the piston assembly are disposed in a unitary structure.

The dial of the above indicator dial is set to a dial with a uniform scale. Another object of the present invention is to provide a tire air pump having the above-described rotary dial type air pressure meter, which has the characteristics of simple structure, high air pressure detection accuracy and low cost, in order to avoid the deficiencies of the prior art.

A tire air pump having a rotary disc type air pressure meter, which is provided with a pump body, a large disc communicating with the pump body, a tire connecting pipe and a barometer which are respectively connected with the large plate outlet, and the large plate inputs a part of gas generated by the pump body through the tire connecting pipe To the car tires, another part of the gas is input to the barometer for air pressure detection;

The air pressure gauge is configured as a rotary air pressure gauge, and the rotary air pressure gauge is provided with a core body and an indicator disk; The core body is provided with a cavity, an air inlet, a spring, a piston assembly, a moving rod and a driving member, one end of the cavity is an air inlet, and the other end of the cavity is an outlet;

The moving rod, the spring and the piston assembly are both mounted on the cavity, and the moving rod is provided with a moving end and a driving end;

The piston assembly is fixedly mounted on the moving end and the piston assembly is in sealing engagement with an inner wall surface of the cavity;

The core body is further provided with a frame body, and the cavity, the driving member and the indicator disk are respectively assembled to the frame body;

a driving end of the moving rod is provided with a plurality of serrations, the driving member is disposed as a gear, a gear shaft of the gear is movably mounted on the frame body, the pointer is fixedly mounted on the gear shaft, and the serration is The gears are matched;

The moving end and the piston assembly are disposed in a unitary structure.

The rotary type air pressure meter of the present invention and the tire air pump having the air pressure meter, the rotary type air pressure meter is provided with a core body and an indicator disk; the core body is provided with a cavity, an air inlet, a spring, a piston assembly, and a movement a rod and a driving member, one end of the cavity is an air inlet, and the other end of the cavity is an outlet; the moving rod, the spring and the piston assembly are all mounted on the cavity, and the moving rod is disposed a moving end and a driving end; the piston assembly is fixedly mounted on the moving end and the piston assembly is sealingly engaged with an inner wall surface of the cavity; a driving end of the moving rod protrudes from the outlet The cavity is partially exposed to the cavity, the driving end is engaged with the driving member, and the driving member drives the pointer of the indicator disk to rotate The spring is sleeved on the moving rod, and two ends of the spring abut against the piston assembly and an end of the cavity away from the air inlet. The rotary air pressure gauge and the tire air pump having the air pressure meter have the characteristics of simple structure, high air pressure detection accuracy and low cost.

DRAWINGS

The present invention will be further described with reference to the drawings, but the contents of the drawings do not constitute any limitation to the present invention.

1 is a schematic structural view of a rotary disc type air pressure gauge according to the present invention;

Figure 2 is a partial structural view of a core of a rotary disc type according to the present invention; Figure 3 is a cross-sectional view of "A-A" of Figure 2;

4 is a schematic structural view of a tire air pump having a rotary dial type air pressure meter according to the present invention; FIG. 5 is a schematic cross-sectional structural view of FIG.

Figure 6 is an exploded perspective view of Figure 4.

In Figures 1 to 6, it includes:

Rotary barometer 100,

Core 110,

The frame body 111, the cavity 112, the air inlet 113, the spring 114, the piston assembly 115, the moving rod 116,

Mobile end 1161, convex head 1162

Drive end 1163, sawtooth 1164,

Driver 117,

Gear 1171, gear shaft 1172,

Indicator plate 118,

Pointer 119,

The pump body 200, the large plate 300, and the tire connecting pipe 400.

detailed description

The present invention is further described in conjunction with the following examples.

Example 1. A rotary dial gauge, as shown in FIGS. 1 to 3, is provided with a core 110 and an indicator disk 118. The core 110 is provided with a frame body 111, a cavity 112, an air inlet 113, a spring 114, a piston assembly 115, a moving rod 116, and a driving member 117. The cavity 112, the driving member 117 and the indicator disk 118 are respectively mounted on the frame body 111, and the respective positions of the components are realized by the frame body 111.

The end of the cavity 112 is the air inlet 113, and the other end of the cavity 112 is an outlet. The travel bar 116, the spring 114 and the piston assembly 115 are each mounted to the cavity 112. The moving rod 116 is provided with a moving end 1161 and a driving end 1163. The piston assembly 115 is fixedly fitted to the moving end 1161 and the piston assembly 115 is in sealing engagement with the inner wall surface of the cavity 112. The driving end 1163 of the moving rod 116 protrudes from the outlet to the cavity 112 and is partially exposed to the cavity 112. The driving end 1163 cooperates with the driving member 117, and the driving member 117 drives the pointer 119 of the indicator disk 118 to rotate. The spring 114 is sleeved on the moving rod 116, and the two ends of the spring 114 abut against the outlet end of the piston assembly 115 and the cavity 112, respectively.

Specifically, the moving end 1161 is provided with a fitting boss 1162, the piston assembly 115 is provided with a fitting groove, and the fitting boss 1162 is sealingly assembled with the fitting groove. The tight fitting of the moving end 1161 and the piston assembly 115 can be achieved by the arrangement of the fitting boss 1162 and the fitting groove. It should be noted that the moving end 1161 and the piston assembly 115 can be directly arranged as a single structure, and has the characteristics of simple structure and convenient assembly.

The driving end 1163 of the moving rod 116 is provided with a plurality of serrations 1164, the driving member 117 is disposed as a gear 1171, the gear shaft 1172 of the gear 1171 is movably mounted to the frame body 111, and the pointer 119 is fixedly mounted to the gear shaft 1172, and the serration 1164 is coupled with the gear 1171 match. When the moving rod 116 moves along the cavity 112, the length of the driving end 1163 of the moving rod 116 exposed to the cavity 112 also changes, so that the sawtooth 1164 drives the gear 1171 to rotate, and the gear 1171 drives the gear shaft 1172 to rotate, the gear shaft The 1172 drives the pointer 119 to rotate on the indicator dial 118 for pressure display.

Preferably, the dial of the indicator dial 118 is provided as a dial of uniform scale.

The rotary dial gauge 100 operates on the following principle: When gas enters the cavity 112 through the air inlet 113, as the amount of gas entering increases, the air pressure in the cavity 112 at the end of the air inlet 113 increases, which will push The piston assembly 115 compresses the spring 114 and moves toward the outlet of the cavity 112. The piston assembly 115 urges the moving rod 116 to also move toward the outlet of the cavity 112. At this time, the serrations 1164 of the drive end 1163 will drive the gear 1171 of the drive member 117. Rotating, the gear shaft 1172 of the gear 1171 drives the indicator disk 118 The pointer 119 is rotated to perform air pressure display. When the air pressure in the cavity 112 at the position of the air inlet 113 is reduced, the spring 114 pushes the reverse movement of the piston under the restoring force, and the piston drives the moving rod 116 to move in the opposite direction, and the driving end 1163 of the moving rod 16 is brought to The driving member 117 is also moved in the reverse direction to realize the effect of displaying the gas pressure of the gas through the dial. The elastic force of the rotary instrument spring 114 is linear with the deformation of the spring 114, and the movement relationship between the gear 1171 and the sawtooth 1164 is also linear, so the rotation of the pointer 1 19 is also proportional to the change of the air pressure, so the detection is accurate. , the error is small. Tests have shown that the rotary dial gauge 100 has an error of 2 psi. In addition, the rotary dial gauge 100 has the characteristics of simple structure and low cost.

Example 2.

A tire air pump having a rotary disc type air pressure meter, as shown in FIGS. 4 to 6, is provided with a pump body 200, a large disc 300 communicating with the pump body 200, a tire connecting tube 400 respectively communicating with the outlet of the large disc 300, and a barometer The large disk 300 inputs a part of the gas generated by the pump body 200 to the tire of the automobile through the tire connecting pipe 400, and another part of the gas is input to the air pressure meter for air pressure detection.

Specifically, the large tray 300 outlet has a tire interface and a barometer interface. The tire interface is connected to the tire connection pipe 400, and a part of the gas generated by the pump body 200 is input to the automobile tire; the barometer interface is connected with the air pressure meter to deliver a part of the gas to the air pressure meter for detection.

The pump body 200 is driven by a power mechanism, and the power generated by the power mechanism drives the piston in the pump body 200 to reciprocate through the transmission mechanism to compress the gas in the pump body 200 to obtain a gas.

The structure of the pump body 200, the power mechanism structure and the transmission mechanism are common knowledge in the art, and the structure for realizing this function has many different forms, which are not enumerated here. Here, only one structure is described. In this embodiment, the power mechanism is provided as a motor, and the transmission mechanism includes a pinion gear, a large gear, and a transmission rod. The pinion is fixedly coupled to the motor shaft of the motor, the large gear meshes with the pinion gear, the large gear is provided with a cam, one end of the transmission rod is movably connected with the cam, and the other end of the transmission rod is fixedly connected with the piston of the pump body 200. The working principle is that under the rotation of the motor, the motor shaft drives the pinion gear to rotate together, and the pinion drive large gear wheel also rotates together, and the cam on the large gear wheel drives the connecting rod to reciprocate, thereby driving the piston in the pump body 200 to reciprocate. Movement, the air pressure in the cavity 112 of the pump body 200 is compressed at a certain frequency to generate gas. The gas generated by the pump body 200 is sent to the large disc 300, and a large portion of the gas is supplied to the automobile tire through the tire connecting pipe 400, and another portion of the gas is sent to the air pressure gauge for air pressure detection. In order to accurately control the gas pressure entering the car tire, it is necessary to accurately detect the air pressure. Therefore, the accuracy of the barometer is very important.

The air pressure gauge in this embodiment is provided as a rotary air pressure gauge 100, and as shown in Figs. 1 to 3, a core 110 and an indicator disk 118 are provided.

The core 110 is provided with a frame body 111, a cavity 112, an air inlet 113, a spring 114, a piston assembly 115, a moving rod 116, and a driving member 117. The cavity 112, the driving member 117 and the indicator disk 118 are respectively mounted on the frame body 111, and the respective positions of the components are realized by the frame body 111.

Preferably, the dial of the indicator dial 118 is provided as a dial of uniform scale. The elastic force of the rotary type instrument spring 114 is linear with the deformation of the spring 114, and the movement relationship between the gear 1171 and the sawtooth 1164 is also linear, so that the rotation of the pointer 119 can be proportional to the change of the air pressure, and the structure is simple. , accurate detection, low cost.

The tire air pump of the utility model has a rotary air pressure meter, and the working principle is as follows: When the gas generated by the air pump is sent to the air inlet 113 of the rotary dial gauge 100 through the outlet of the large disc 300, the gas enters through the air inlet 113. In the cavity 112, as the amount of the input gas increases, the air pressure in the cavity 112 at the end of the air inlet 113 increases, pushing the piston assembly 115 to compress the spring 114 and move toward the outlet of the cavity 112. The piston assembly 115 The push rod 116 is also moved toward the outlet of the chamber 112. At this time, the serration 1164 of the drive end 1163 rotates the gear 1171 of the drive member 117, and the gear shaft 1172 of the gear 1171 drives the pointer 119 of the indicator disc 118 to rotate. When the air pressure in the cavity 112 at the position of the air inlet 113 is reduced, the spring 114 pushes the reverse movement of the piston under the restoring force, the piston drives the moving rod 116 to move in the opposite direction, and the driving end 1163 of the moving rod 116 is brought to the driving. The piece 117 is also moved in the reverse direction to achieve the effect of displaying the gas pressure of the gas through the dial. Tests have shown that the error of the air pump is 2 psi, so it has not only simple structure, but also accurate detection and low cost. By setting the rotary dial gauge 100, it is used as a tire air pump or a portable air pump for a portable tool, which is not only small in size but also high in precision, and can improve the performance of the air pump.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to limit the scope of the present invention. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should It is to be understood that the technical solutions of the present invention may be modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention.

Industrial applicability

The rotary disc type air pressure meter of the utility model and the tire air pump having the air pressure meter have simple structure, high gas pressure detection precision and low cost, and have good industrial applicability.

Claims

Claim

1. A rotary disc type air pressure meter, characterized in that: a core body and an indicator disk are provided;

a driving end of the moving rod protrudes from the outlet from the cavity and is partially exposed to the cavity, the driving end cooperates with the driving component, and the driving component drives the pointer of the indicator disk Rotating; the spring is sleeved on the moving rod, and two ends of the spring are respectively abutted with the piston assembly and the outlet end of the cavity.

2. The rotary disc pressure gauge according to claim 1, wherein: the core body is further provided with a frame body, and the cavity, the driving member and the indicator disk are respectively mounted on the frame body .

3. The rotary disc type air pressure gauge according to claim 2, wherein: the driving end of the moving rod is provided with a plurality of serrations, the driving member is provided as a gear, and a gear shaft of the gear is movably mounted on the a frame, the pointer is fixedly mounted on the gear shaft, and the saw teeth are matched with the gear;

4. The rotary disc type air pressure gauge according to claim 1, wherein: the moving end is provided with a fitting boss, the piston is provided with a fitting groove, and the fitting boss is sealingly fitted with the fitting groove.

The rotary dial type air pressure gauge according to claim 4, wherein the moving end and the piston assembly are provided in a unitary structure.

6. The rotary dial type air pressure gauge according to claim 1, wherein: the dial of the indicator dial is provided as a dial having a uniform scale.

7. A tire air pump having a rotary disc pressure gauge, comprising: a pump body, a large disc communicating with the pump body, a tire connecting tube and a barometer connected to the large disc outlet, and the large disc passing a part of the gas generated by the pump body The tire connection pipe is input to the automobile tire, and the other part of the gas is input to the air pressure gauge for air pressure detection, and is characterized by:

The air pressure gauge is configured as a rotary air pressure gauge, and the rotary air pressure gauge is provided with a core body and an indicator disk;

8. The tire air pump with a rotary dial type according to claim 7, wherein: the core body is further provided with a frame body, and the cavity, the driving member and the indicator plate are respectively assembled On the frame body;

9. The tire air pump with a rotary dial type according to claim 7, wherein: the moving end is provided with an assembly boss, the piston is provided with a fitting groove, the fitting boss and the assembly Slot seal assembly.

10. The tire air pump with a rotary dial type according to claim 7, wherein: the moving end and the piston assembly are provided in a unitary structure.