Pressure gauge joint structure

Abstract

The technical scheme of the utility model relates to a pressure gauge joint structure, and a pressure gauge comprises a main body which is provided with an inner cavity and a pressure sensing member arranged in the inner cavity; the sleeving end is connected with the main body and is provided with a first assembling seat, the first assembling seat is provided with a first assembling hole and at least one limiting hole, the first assembling hole is communicated with gas in the inner cavity, and the at least one limiting hole is communicated with the first assembling hole; the at least one first limiting piece is arranged in the at least one limiting hole in a penetrating manner and penetrates through the first assembling hole; the replaceable bicycle accessory is provided with a combining end which can be sleeved on the sleeving end; therefore, the pressure gauge is provided with a joint structure which is easy to assemble and disassemble, so that different bicycle accessories can be combined, the development cost can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a pressure measuring device, in particular to a joint structure of a pressure gauge. Background Art

[0002] Conventional bicycle accessories, such as tire pressure gauges, upright pumps, portable handheld pumps, and electric pumps, each have a pressure gauge structure fixed to the bicycle accessory and cannot be removed and used on other bicycle accessories. Manufacturers must develop a pressure gauge fixing method compatible with each bicycle accessory, which significantly increases development costs and affects production efficiency.

[0003] Therefore, it is necessary to provide a novel and advanced pressure gauge connection structure, wherein the pressure gauge has a connection structure that can be detached and assembled to other bicycle accessories. Summary of the Invention

[0004] The main purpose of the present utility model is to provide a pressure gauge joint structure that has a joint structure that is easy to assemble and disassemble and can be arbitrarily combined with the devices of different bicycle accessories, thereby reducing development costs and improving production efficiency. At the same time, its joint structure also enables the pressure gauge to have a multi-angle rotation function, making it convenient for the user to flip it over and view its pressure value during operation.

[0005] To achieve the above-mentioned objectives, the present invention provides a pressure gauge coupling structure, the pressure gauge comprising: a main body having an inner cavity and a pressure sensing member disposed in the inner cavity; a sleeve end connected to the main body and having a first assembly seat, the first assembly seat being provided with a first assembly hole and at least one limiting hole, the first assembly hole being in gaseous communication with the inner cavity, and the at least one limiting hole being in communication with the first assembly hole; at least one first limiting member being disposed through the at least one limiting hole and the first assembly hole; and a replaceable bicycle accessory, the bicycle accessory being formed with a coupling end that can be sleeved on the sleeve end.

[0006] As a preferred embodiment of the above technical solution, preferably, the at least one limiting hole is arranged radially opposite to the first set of connection holes.

[0007] As a preferred embodiment of the above technical solution, preferably, when the at least one first limiting member passes through the first set of connection holes and the limiting groove of the connecting end, the at least one first limiting member is partially exposed on the inner circumferential surface of the first set of connection holes, and the exposed portion of the at least one first limiting member is stuck in the limiting groove of the connecting end.

[0008] As a preferred embodiment of the above technical solution, preferably, the limiting groove is an annular groove or a non-annular groove.

[0009] As a preferred embodiment of the above technical solution, preferably, the outer end surface of the at least one limiting hole is provided with a convex portion, and the convex portion extends from the outer peripheral surface of the first assembly seat.

[0010] As a preferred embodiment of the above technical solution, preferably, the at least one limiting member includes a body portion and a tightening portion.

[0011] As a preferred embodiment of the above technical solution, preferably, the radial dimension of the tightening portion is greater than the radial dimension of the body portion.

[0012] As a preferred embodiment of the above technical solution, preferably, the tightening portion includes a plurality of latching protrusions, and the plurality of latching protrusions are radially tightly pressed against the at least one convex portion.

[0013] As a preferred embodiment of the above technical solution, preferably, the sleeve end further includes a second assembly seat, which is radially formed on the sleeve end, and the second assembly seat has a second assembly hole that intersects with the first assembly hole and is gas-connected, and a second limiting member is provided in the second assembly hole, and the second limiting member is gas-connected with the inner cavity.

[0014] As a preferred embodiment of the above technical solution, preferably, the second limiting member is a deflation valve assembly, and the second limiting member is used to constrain the deflation valve assembly to be connected to the second set of connection holes.

[0015] As a preferred embodiment of the above technical solution, preferably, the sleeve end further includes a second assembly seat, which is radially formed on the sleeve end, the second assembly seat intersects with the first assembly seat and is gas-connected, the second assembly seat radially penetrates the first assembly seat and has another end, and the second assembly hole radially penetrates the first assembly hole.

[0016] As a preferred embodiment of the above technical solution, preferably, the second assembly seat further includes a shaft member, which is airtightly inserted into the other end of the second assembly hole and connected to the air relief valve assembly, and the shaft member has a first end, a second end, an axial hole axially arranged at the second end and at least one side hole, and the at least one side hole is radially arranged between the first end and the second end and is in gas communication with the inner cavity and the axial hole.

[0017] As a preferred embodiment of the above technical solution, preferably, the at least one limiting member radially passes through the first group of connecting holes from a limiting hole and is connected to the limiting hole at the opposite end.

[0018] As a preferred embodiment of the above technical solution, preferably, the opposite end of the at least one limiting hole is a blind hole for the at least one first limiting member to be inserted and positioned.

[0019] As a preferred embodiment of the above technical solution, preferably, the air relief valve assembly includes a valve seat, a shaft and an elastic member, the circumferential surface of the valve seat is formed with an external thread, the center of the valve seat is provided with a through hole and a tube wall extending downward around the through hole, the inner surface of the tube wall is formed with an annular groove; the outer circumferential surface of the shaft is provided with a radial hole, the shaft is movably provided in the through hole, and the other end of the shaft has a radial flange; an elastic member is elastically pressed between the second set of connecting holes and the air relief valve assembly.

[0020] As a preferred embodiment of the above technical solution, preferably, the air relief valve assembly includes a valve seat, a shaft and an elastic member, the circumferential surface of the valve seat is formed with an internal thread, the center of the valve seat is provided with a through hole and a tube wall extending downward around the through hole, the inner surface of the tube wall is formed with an annular groove; the outer circumferential surface of the shaft is provided with a radial hole, the shaft is movably provided in the through hole, and the other end of the shaft has a radial flange; an elastic member is elastically pressed between the shaft and the air relief valve assembly.

[0021] As a preferred embodiment of the above technical solution, preferably, an internal thread or an external thread is formed on the circumferential surface of the second limiting member.

[0022] As a preferred embodiment of the above technical solution, preferably, the replaceable bicycle accessory is an air pump.

[0023] As a preferred embodiment of the above technical solution, preferably, the replaceable bicycle accessory is a valve joint.

[0024] As a preferred embodiment of the above technical solution, preferably, the first end of the shaft is a closed end or an open end. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a three-dimensional diagram of the first preferred embodiment of the present utility model.

[0027] Figure 2 This is an exploded view of a first preferred embodiment of the present invention.

[0028] Figure 3 It is a cross-sectional view of a preferred embodiment of the present invention.

[0029] Figure 4 for Figure 3 A partial enlarged view of .

[0030] Figure 5 This is a schematic diagram of the first embodiment of the present invention.

[0031] Figure 6 for Figure 5 Exploded diagram of .

[0032] Figure 7 This is a schematic diagram of a second embodiment of the present invention.

[0033] Figure 8 for Figure 7 A partially exploded and enlarged view of the .

[0034] Figure 9 This is a schematic diagram of a third embodiment of the present invention.

[0035] Figure 10 for Figure 9 Exploded diagram of .

[0036] Figure 11 It is a cross-sectional view of another embodiment of the assembled bicycle accessories.

[0037] Among them, 1: pressure gauge; 10: main body; 11: inner cavity; 12: pressure sensing member; 13: display unit; 20: sleeve end; 21: first set of sockets; 211: first set of connection holes; 212: first stopper; 213: stopper hole; 215: protrusion; 216: body; 217: tightening portion; 218: clamping protrusion; 22: second set of sockets; 221: second set of connection holes; 222: second stopper; 224: thread; 225: perforation; 226: tube wall; 228: receiving groove; 230: ring groove; 30: bicycle Accessories; 30A: air nozzle connector; 30A1: air nozzle; 30B: vertical air pump; 30C: portable hand-held air pump; 30C1: air outlet pipe; 31: connecting end; 32: limiting groove; 321: hollow tube body; 40: shaft; 41: first end; 42: second end; 43: shaft hole; 44: side hole; 45: shoulder; 50: air relief valve assembly; 51: shaft; 511: radial hole; 52: radial flange; 53: operating member; 54: valve seat; 60: first sealing ring; 70: second sealing ring; 80: elastic member. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] The following examples are merely illustrative of possible implementations of the present invention and are not intended to limit the scope of protection to be provided by the present invention. The words "one" or "at least one" preceding the nouns mentioned herein do not limit the quantity and may be "plural" based on needs. Such changes in quantity also fall within the scope of protection to be provided, and are therefore clearly stated.

[0040] Please refer to Figures 1 to 3 , which shows a pressure gauge connection structure provided by a preferred embodiment of the present invention. The pressure gauge 1 includes a main body 10, the main body 10 having an inner cavity 11 and a pressure sensing member 12 disposed in the inner cavity 11. The pressure sensing member 12 can be a digital or mechanical pressure sensing member 12 (e.g., a spring-loaded pressure gauge). The pressure sensing member 12 can display pressure value information obtained from the gas pressure in the inner cavity 11 of the pressure gauge 1 on a display portion 13 of the main body 10 for viewing by an operator. The structure of the main body 10 and the pressure sensing member 12 are not the main subject of the present invention and will not be described in detail.

[0041] A sleeve end 20 is connected to one side of the main body 10 and has a first assembly seat 21. The first assembly seat 21 is axially formed on the sleeve end 20. The first assembly seat 21 is provided with a first assembly hole 211 and at least one limiting hole 213. The first assembly hole 211 is in gas communication with the inner cavity 11. The tire pressure in the tire can flow through the inner cavity 11 of the main body 10 through the first assembly hole 211. The pressure sensing member 12 can receive the gas pressure and display the obtained pressure value information on the display portion 13. The at least one limiting hole 213 radially penetrates the circumference of the first assembly seat 21 and is connected to the first assembly hole 211. The at least one limiting hole 213 is radially arranged opposite to the first assembly hole 211.

[0042] The at least one first limiting member 212 is a column. The at least one first limiting member 212 is disposed in the at least one limiting hole 213 and passes through the first connecting hole 211. When the at least one first limiting member 212 passes through the first connecting hole 211, the at least one first limiting member 212 is partially exposed from the inner circumference of the first connecting hole 211. To remove the at least one first limiting member 212, a tool, such as a screwdriver (not shown), is simply used to push the screwdriver to disengage the first limiting member 212 from the at least one limiting hole 213.

[0043] In a preferred embodiment of the present invention, please refer to Figure 2The first connecting seat 21 has a plurality of limiting holes 213. For example, the first connecting seat 21 has two groups of radially opposite limiting holes 213. The at least one first limiting member 212 includes two limiting members 212. Each limiting member 212 radially passes through the first connecting hole 211 from a limiting hole 213 and is connected to the limiting hole 213 at the opposite end, so as to facilitate assembly and disassembly. It is also worth noting that in other possible implementations, the opposite end of the at least one limiting hole 213 can be a blind hole. The shape of the limiting hole 213 is not limited, as long as it can allow the at least one first limiting member 212 to be engaged and fixed with each other.

[0044] See also Figures 5 to 10 A replaceable bicycle accessory 30 is provided. The bicycle accessory 30 generally refers to accessories surrounding a bicycle tire, including but not limited to an air pump, an air pump nozzle, an electric air pump, or a tire pressure gauge. Here, the bicycle accessory 30 is exemplified by a pump nozzle connector 30A, a stand-type air pump 30B, and a portable handheld air pump 30C. The pressure gauge 1 of the present invention can be disassembled and assembled onto any of these bicycle accessories 30. By connecting the bicycle accessory 30 to the air nozzle on the tire, the tire pressure in the tire can flow through the first set of connection holes 211 through the inner cavity 11 of the main body. The pressure sensing component 12 can receive the gas pressure and display the obtained pressure value information on the display unit 13.

[0045] Please refer to Figures 5 to 10 , which is an embodiment of the combination of the bicycle accessory 30 to the pressure gauge 1. The outer end of the bicycle accessory 30 is formed with a coupling end 31 that can be sleeved on the sleeve end 20 of the pressure gauge 1. The coupling end 31 has a hollow tube body 321. The hollow tube body 321 and the inner cavity 11 of the pressure gauge 1 communicate with each other. The outer circumference of the hollow tube body 321 is provided with a limiting groove 32. The limiting groove 32 can be an annular groove or a non-annular groove. When the sleeve end 20 of the pressure gauge 1 is combined with the coupling end 31 on any bicycle accessory 30, the at least one first limiting member 212 passes through the first group of connection holes 211 and the limiting groove 32 of the coupling end 31, thereby forming a combination of the sleeve end 20 and the coupling end 31. In other words, the at least one first limiting member 212 is partially exposed from the inner circumference of the first connecting hole 211, and the exposed portion of the at least one first limiting member 212 is abutted against the limiting groove 32 of the coupling end 31. The tire pressure can flow through the inner cavity 11 of the main body through the first connecting hole 211, and the pressure sensing member 12 can receive the gas pressure and display the obtained pressure value information on the display unit 13. When the pressure gauge 1 is to be disassembled and assembled to a different bicycle accessory 30, only a tool, such as a screwdriver (not shown), is required to be used to push the screwdriver to disengage the first limiting member 212 from the at least one limiting hole 213, and the pressure gauge 1 can be disassembled and assembled to another bicycle accessory 30.

[0046] See also Figure 2 Preferably, the at least one first limiting member 212 includes a body 216 and a tightening portion 217, the body 216 radially penetrates into the first group connection hole 211, and the tightening portion 217 of the at least one limiting member 212 is tightly pressed against the at least one protrusion 215 and does not fall out at will.

[0047] Preferably, the radial dimension of the tightening portion 217 is greater than the radial dimension of the body 216 , and the tightening portion 217 includes a plurality of latching protrusions 218 , which radially press against the at least one convex portion 215 , so that the limiting member 212 is more stably restricted in the limiting hole 213 .

[0048] Preferably, a protrusion 215 is provided on the outer end of the at least one limiting hole 213. The protrusion 215 extends from the outer periphery of the first assembly seat 21. The protrusion 215 restrains the at least one limiting member 212 to provide structural strength to the at least one limiting hole 213 and prevent it from being damaged.

[0049] See also Figure 11 , which is another embodiment, wherein the sleeve end 20 further includes a second assembly seat 22, which is radially formed on the sleeve end 20, and the second assembly seat 22 has a second assembly hole 221, which intersects with the first assembly hole 211 and is gas-connected; a second limiter 222 is disposed in the second assembly hole 211, which is a deflation valve assembly 50, and the second limiter 222 is gas-connected with the inner cavity 11. When the pressure gauge 1 senses that the tire pressure in the tire is too high, the deflation valve assembly 50 can be used to release the pressure.

[0050] Please refer to Figure 11As shown, the air relief valve assembly 50 includes a valve seat 54, a shaft 51 and an elastic member 80, the circumference of the valve seat 54 is formed with an external thread 224, the center of the valve seat 54 is penetrated by a through hole 225 and a tube wall 226 extending downward around the through hole 225, the inner surface of the tube wall 226 is formed with an annular groove 230; a radial hole 511 is penetrated by the outer circumference of the shaft 51, the shaft 51 is movably penetrated in the through hole 225 and one end of the shaft 51 is connected to an operating member 53 (which can be screwed or connected in other ways), and the other end of the shaft 51 has a radial flange 52; a first sealing ring 60 is provided on the shaft 51 and embedded in the annular groove 230, the first sealing ring 60 is pressed between the valve seat 54 and the radial flange 52 to close the through hole 225; in more detail, when the shaft 51 is in a state of being applied force, the radial The flange 52 can release the through-hole 225, and the gas in the inner cavity 11 is discharged to the outside through the gap between the radial hole 511 and the through-hole 225. When the shaft 51 is in an unforced state, the first sealing ring 60 is located between the inner surface of the tube wall 226 and the radial flange 52, thereby keeping the radial hole 511 airtight and disconnected from the gas in the inner cavity 11. The elastic member 80 is elastically pressed between the second connection hole 221 and the air release valve assembly 50, so that the air release valve assembly 50 can automatically reset and seal the through-hole 225. The operating member 53 is disposed in the receiving groove 228 and has a space. When force is applied to the operating member 53, the shaft 51 is displaced, causing its radial flange 52 to displace without sealing the through-hole 225. When the pressure sensing member 12 of the pressure gauge 1 detects that the tire pressure is too high, the air release valve assembly 50 can be forced to release pressure.

[0051] See also Figures 1 to 4 In this preferred embodiment, the second assembly seat 22 intersects with the first assembly seat 21 and is in gas communication. The second assembly seat 22 radially penetrates the first assembly seat 21 and has another end, and its second assembly hole 221 radially penetrates the first assembly hole 211; the second assembly seat 22 includes: a shaft 40 is airtightly inserted into the other end of the second assembly hole 221 and connected to the relief valve assembly 50, that is, the second limit member 222 The exhaust valve assembly 50 and the shaft 40 are connected to the sleeve end 20 for restraining; wherein the shaft 40 has a first end 41, a second end 42, an axial hole 43 and at least one side hole 44, the axial hole 43 is axially opened at the second end 42, and the at least one side hole 44 is radially arranged between the first end 41 and the second end 42 and is in gas communication with the inner cavity 11 and the axial hole 43. In addition, it is worth noting that the first end 41 can be a closed end (such as Figure 2 or Figure 6 ) or an open end (such as Figure 10), the second end 42 is connected to the air relief valve assembly 50, the second end 42 has a shoulder 45 located in the shaft hole 43, the elastic member 80 is elastically pressed between the shoulder 45 and the air relief valve assembly 50, so that the air relief valve assembly 50 can be automatically reset and closed in the through hole 225; a second sealing ring 70 is airtightly pressed between the outer side of the tube wall 226 of the valve seat 54 and the second end 42 of the shaft member 40, providing a good and reliable anti-leakage effect, thereby, the second assembly seat 22 can intersect with the first assembly seat 21 and be gas-connected, so that different forms of shaft members 40 (whose first end 41 is a closed end or an open end) are inserted into the other end of the second assembly hole 221 and connected to the air relief valve assembly 50, that is, the second limit member 222 is used to constrain the air relief valve assembly 50 and the shaft member 40 to be connected to the sleeve end 20.

[0052] Please refer to Figure 3 In more detail, in a preferred embodiment of the present invention, the second limiting member 222 is the valve seat 54, and the valve seat 54 has an internal thread 224 recessed on its circumferential surface. The shaft member 40 is inserted into the other end of the second assembly hole 221 and the second end 42 of the shaft member 40 is screwed into the internal thread 224 of the valve seat 54, so that the second limiting member 222 is used to constrain the air relief valve assembly 50 and the shaft member 40 to be connected to the second assembly seat 22.

[0053] Please refer to Figure 5 and Figure 6, which shows the first embodiment of the present invention, wherein the replaceable bicycle accessory 30 is a valve connector 30A, and the pressure gauge 1 and the valve connector 30A are combined to form a tire pressure gauge. The valve connector 30A includes two valves 30A1 (in other possible embodiments, only one valve 30A1 may be included). The two valves may be of different structural types (for example, a Schrader valve and a Presta valve) or of the same structural type. The structure of the valve is not the main subject of the present invention and will not be described in detail. The valve connector 30A is formed with a The coupling end 31 can be sleeved on the sleeve end 20 of the pressure gauge 1, and the coupling end 31 has a hollow tube 321. The hollow tube 321 and the inner cavity 11 of the pressure gauge 1 are in gas flow. The outer circumference of the hollow tube 321 is provided with a limiting groove 32. The limiting groove 32 is an annular groove. The at least one first limiting member 212 passes through the first group of holes 211 and the limiting groove 32 of the coupling end 31, thereby forming an assembly and fixation of the sleeve end 20 and the coupling end 31. That is, the at least one first limiting member 212 is partially exposed at The exposed portion of the at least one first limiting member 212 on the inner circumferential surface of the first set of connecting holes 211 is clamped on the limiting groove 32 of the connecting end 31, thereby connecting the air nozzle 30A1 to the air nozzle on the tire (not shown). The tire pressure in the tire can flow through the inner cavity 11 of the main body through the first set of connecting holes 211. The pressure sensing component 12 can receive the gas pressure and display the obtained pressure value information on the display unit 13. It also allows the pressure gauge 1 and the air nozzle connector 30A to rotate relative to each other, so that the operator can view the main body 10 at the most appropriate angle. The pressure value information on the display unit 13 is displayed; in addition, it is worth noting that the second assembly seat 22 radially penetrates the first assembly seat 21 and has another end. In this case, the first end 41 of the shaft 40 is a closed end. In this embodiment, there is no need to connect an air outlet pipe separately. When the pressure gauge 1 is to be disassembled and assembled to a different bicycle accessory 30, only a tool, such as a screwdriver (not shown), is needed to push the screwdriver to disengage the first limiting member 212 from the at least one limiting hole 213, and the pressure gauge 1 can be disassembled and assembled to another bicycle accessory 30.

[0054] Please refer to Figure 7 and Figure 8, which shows the second embodiment of the present invention, wherein the replaceable bicycle accessory 30 is a vertical air pump 30B, and the vertical air pump 30B is formed with a coupling end 31 that can be sleeved on the sleeve end 20 of the pressure gauge 1, and the coupling end 31 has a hollow tube body 321, and the hollow tube body 321 and the inner cavity 11 of the pressure gauge 1 communicate with the gas, and the outer circumferential surface of the hollow tube body 321 is provided with a limiting groove 32, and the limiting groove 32 is an annular groove. When the sleeve end 20 of the pressure gauge 1 is assembled to the coupling end 31 on the vertical air pump 30B, the at least one first limiting member 212 passes through the first group connection hole 211 and the limiting groove 32 of the coupling end 31, thereby assembling and fixing the sleeve end 20 and the coupling end 31, that is, the at least one first limiting member 212 is partially exposed from the first group connection hole 211 On the inner surface, the exposed portion of the at least one first limiting member 212 is stuck on the limiting groove 32 of the coupling end 31, whereby the gas output by the vertical air pump 30B flows through the inner cavity 11 of the main body 10 from the first group connection hole 211, and the pressure sensing component 12 can display the obtained pressure value information on the display part 13 under the pressure of the gas, and also allow the pressure gauge 1 and the vertical air pump 30B to rotate relative to each other, so that the operator can view the pressure value information on the display part 13 of the main body 10 at the most appropriate angle. In addition, in this embodiment, the second group connection seat 22 does not radially penetrate the first group connection seat 21 and has another end, but the second group connection seat 22 has a second group connection hole 221, which intersects with the first group connection hole 211 and is gas-connected; a second limiting member 222 is arranged in the second group connection hole 211.

[0055] Please refer to Figure 9 and Figure 10, which shows the third embodiment of the present invention, wherein the replaceable bicycle accessory 30 is a portable handheld air pump 30C, the portable handheld air pump 30C is formed with a coupling end 31 that can be mounted on the mounting end 20 of the pressure gauge 1, the coupling end 31 has a hollow tube 321, the hollow tube 321 and the inner cavity 11 of the pressure gauge 1 communicate with the gas, and the outer circumference of the hollow tube 321 is provided with a limiting groove 32 The limiting groove 32 is a non-annular groove. When the sleeve end 20 of the pressure gauge 1 is assembled to the connecting end 31 on the portable handheld air pump 30C, the at least one first limiting member 212 passes through the first group of connecting holes 211 and the limiting groove 32 of the connecting end 31, thereby forming an assembled and fixed assembly between the sleeve end 20 and the connecting end 31. In other words, the at least one first limiting member 212 is partially exposed on the inner circumference of the first group of connecting holes 211. The exposed portion of the at least one first limiting member 212 is abutted against the limiting groove 32 of the coupling end 31. As a result, gas outputted from the portable handheld pump 30C flows through the inner cavity 11 of the main body 10 through the first group of connecting holes 211. The pressure sensing member 12 can be subjected to the gas pressure and display the obtained pressure value information on the display portion 13. In addition, it is worth noting that the first end 41 of the shaft 40 is an open end connected to an air outlet pipe 30C1, which facilitates the operator to hold the portable handheld pump 30C for inflation and to view the pressure value information on the display portion 13 of the main body 10. When the pressure gauge 1 is to be disassembled and assembled to a different bicycle accessory 30, it is only necessary to use a tool, such as a screwdriver (not shown), to push the screwdriver to disengage the first limiting member 212 from the at least one limiting hole 213, and the pressure gauge 1 can be disassembled and assembled to another bicycle accessory 30.

[0056] In summary, the pressure gauge 1 has a joint structure that is easy to assemble and disassemble, so as to achieve the combination of different bicycle accessories, thereby reducing development costs and improving production efficiency.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure gauge joint structure, characterized in that: Pressure gauges include: A main body having an inner cavity and a pressure sensing member disposed in the inner cavity; a sleeve end connected to one side of the main body and having a first assembly seat, the first assembly seat having a first assembly hole and at least one limiting hole, the first assembly hole being in gas communication with the inner cavity, and the at least one limiting hole being in communication with the first assembly hole; At least one first limiting member is disposed in the at least one limiting hole and radially passes through the first group of connecting holes; as well as A replaceable bicycle accessory has a coupling end formed on its outer end for being fitted over a sleeve end. The coupling end has a hollow tube body, through which gas flows between the hollow tube body and the inner cavity of a pressure gauge. A limiting groove is provided on the outer circumference of the hollow tube body. By removing the at least one first limiting member, the sleeve end is separated from the coupling end, and the sleeve end can be assembled with the coupling end of a different bicycle accessory.

2. The pressure gauge joint structure according to claim 1, characterized in that: The at least one limiting hole is radially arranged opposite to the first group of connecting holes.

3. The pressure gauge joint structure according to claim 1 or 2, characterized in that: When the at least one first limiting member passes through the first set of connecting holes and the limiting groove of the connecting end, the at least one first limiting member is partially exposed on the inner circumference of the first set of connecting holes, and the exposed portion of the at least one first limiting member is clamped in the limiting groove of the connecting end.

4. The pressure gauge joint structure according to claim 1, wherein: The limiting groove is an annular groove or a non-annular groove.

5. The pressure gauge joint structure according to claim 1, wherein: A convex portion is convexly provided on the outer end surface of the at least one limiting hole, and the convex portion extends from the outer peripheral surface of the first assembly seat.

6. The pressure gauge joint structure according to claim 1, wherein: The at least one first position-limiting component includes a body portion and a tightening portion.

7. The pressure gauge joint structure according to claim 6, characterized in that: The radial dimension of the tightening portion is greater than the radial dimension of the body portion.

8. The pressure gauge joint structure according to claim 6 or 7, characterized in that: The outer end surface of the at least one limiting hole is provided with at least one convex portion, and the at least one convex portion extends from the outer peripheral surface of the first assembly seat. The tightening portion includes a plurality of clamping protrusions, and the plurality of clamping protrusions are radially tightly pressed against the at least one convex portion.

9. The pressure gauge joint structure according to claim 1, wherein: The sleeve end further includes a second assembly seat, which is radially formed on the sleeve end. The second assembly seat has a second assembly hole that intersects with the first assembly hole and is gas-connected. A second limiting member is arranged in the second assembly hole, and the second limiting member is gas-connected with the inner cavity.

10. The pressure gauge joint structure according to claim 9, wherein: The second limiting member is a deflation valve assembly, and the second limiting member is used to constrain the deflation valve assembly to be connected to the second group of connection holes.

11. The pressure gauge joint structure according to claim 1, wherein: The sleeve end further includes a second assembly seat, which is radially formed on the sleeve end. The second assembly seat intersects with the first assembly seat and is gas-connected. The second assembly seat radially penetrates the first assembly seat and has another end. The second assembly seat has a second assembly hole, which radially penetrates the first assembly hole.

12. The pressure gauge joint structure according to claim 10, wherein: The second assembly seat further includes a shaft member, which is airtightly inserted into the other end of the second assembly hole and connected to the air relief valve assembly. The shaft member has a first end, a second end, an axial hole and at least one side hole. The axial hole is axially arranged at the second end, and the at least one side hole is radially arranged between the first end and the second end and is in gas communication with the inner cavity and the axial hole.

13. The pressure gauge joint structure according to claim 1 or 2, characterized in that: The at least one first limiting member radially passes through the first group connection hole from a limiting hole and is connected to the limiting hole at the opposite end.

14. The pressure gauge joint structure according to claim 1 or 2, characterized in that: The opposite end of the at least one limiting hole is a blind hole for the at least one first limiting member to be inserted and positioned.

15. The pressure gauge joint structure according to claim 10, wherein: The air relief valve assembly includes a valve seat, a shaft and an elastic member. The circumferential surface of the valve seat is formed with an external thread. A through hole and a tube wall extending downward around the through hole are formed in the center of the valve seat, and an annular groove is formed on the inner surface of the tube wall. A radial hole is formed through the outer circumferential surface of the shaft, and the shaft is movably inserted into the through hole. The other end of the shaft has a radial flange. The elastic member is elastically pressed between the second group of connecting holes and the air relief valve assembly.

16. The pressure gauge joint structure according to claim 12, wherein: The air relief valve assembly includes a valve seat, a shaft and an elastic member. The circumferential surface of the valve seat is formed with an internal thread. A through hole and a tube wall extending downward around the through hole are penetrated in the center of the valve seat, and an annular groove is formed on the inner surface of the tube wall. A radial hole is penetrated on the outer circumferential surface of the shaft, and the shaft is movably inserted into the through hole. The other end of the shaft has a radial flange. The elastic member is elastically pressed between the shaft and the air relief valve assembly.

17. The pressure gauge joint structure according to claim 9, wherein: An internal thread or an external thread is formed on a circumferential surface of the second limiting member.

18. The pressure gauge joint structure according to claim 1, wherein: The replaceable bicycle accessory is an air pump.

19. The pressure gauge joint structure according to claim 1, wherein: The replaceable bicycle accessory is a valve joint.

20. The pressure gauge joint structure according to claim 12, wherein: The first end of the shaft is a closed end or an open end.

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