CN109130720B

CN109130720B - Bicycle tyre pump chuck with inflation indicating sound

Info

Publication number: CN109130720B
Application number: CN201710511841.2A
Authority: CN
Inventors: 谢文正; 沃德·葛利哥瑞·艾伦
Original assignee: Wo DeGeligeruiAilun
Current assignee: Wo DeGeligeruiAilun
Priority date: 2017-06-27
Filing date: 2017-06-27
Publication date: 2020-11-24
Anticipated expiration: 2037-06-27
Also published as: CN109130720A

Abstract

The invention provides a bicycle tyre pump chuck with inflation indicating sound, which comprises a main body, an end cover and a pivot clamp which are pivoted on the main body, and a whistle device arranged on the main body; the end cover can rotate relative to the main body, one valve rod hole in the end cover is selected to be matched with and connected with a valve rod arranged on the tire, the valve rod is fixed on the end cover in a matched mode through a pivot clamp, the whistle device does not make a sound when bearing normal air pressure in the inflating process, and the pressure acts on the whistle device to make a sound as a warning when the inflating pressure exceeds the preset pressure, so that the situations of tire burst and the like caused by tire over-inflation are prevented.

Description

Bicycle tyre pump chuck with inflation indicating sound

Technical Field

The present invention relates to a pump chuck for bicycle tyre, and is especially one kind of bicycle tyre pump chuck with different kinds of valve rod holes for rotation selection and indicating sound when the air pressure inside the tyre is too high.

Background

The pump cartridge is a fixture for coupling a bicycle tire to an air source, typically by air-tightly clamping the stem bore of the pump cartridge to the stem of the tire valve when the tire is inflated, and the other end of the pump cartridge is connected to a hose of an inflator or manual air pump, and in order to properly inflate the tire, the pump cartridge must be sealed to the stem to prevent or limit air leakage from the connection of the pump cartridge and the stem.

The pump clamp of the existing bicycle has no inflation reminding function, so that the situation that the gas pressure in the tire is too high due to insufficient inflation or over inflation is easy to occur during inflation, however, when the tire is over inflated, the tire body is easy to be excessively tensioned to cause fatigue fracture, the tire body is easy to crack and damage, and the situation of tire burst is caused seriously.

In addition, when the conventional bicycle inflator chuck is used for connection and inflation, the chuck and the air valve are sealed by pulling up the wrench, however, after the wrench is pulled up, the thickness of the bicycle inflator chuck is increased, and when a bicycle tire with a small rim needs to be inflated, the wrench of the conventional bicycle inflator chuck interferes with the rim, so that the pump chuck cannot enter the rim to clamp the valve rod for inflation, which is necessary to actually improve the above disadvantages.

Disclosure of Invention

For the above reasons, an object of the present invention is to provide a tire pump cartridge for a bicycle, which generates an indication sound when the air pressure in a tire is excessively high during inflation.

Another object of the present invention is to provide a bicycle tire pump cartridge having a plurality of stem holes of different sizes for rotational selection.

It is a further object of the present invention to provide a tire pump cartridge for a bicycle that can be used with a relatively small rim so that it can be easily attached to a valve stem of a tire valve.

To achieve the above object, the present invention provides a pump cartridge for a bicycle tire having an inflation indicator for connecting with a valve stem of a tire valve, comprising: a main body, an end cover and a pivot clamp which are pivoted on the main body, and a whistle device which is arranged on the main body; the end cover can rotate relative to the main body, one valve rod hole in the end cover is selected to be matched and connected with a valve rod arranged on the tire, the valve rod is fixed on the end cover in a matched mode through a pivot clamp, the whistle device does not make a sound when bearing normal air pressure in the inflating process, and the pressure acts on the whistle device to make a sound as a warning when the inflating pressure exceeds the preset pressure.

The main body is provided with a first hole, a spring accommodating groove, a connecting part, a channel and a whistle hole, and the first hole is positioned on the spring accommodating groove and is positioned on the top surface of the main body; the connecting part is positioned on one side surface of the main body and is connected with a hose of a tire pump, wherein the connecting part is provided with a second hole; the channel connects the first hole with the second hole; the whistle hole is located on a bottom surface of the main body and is communicated with the passage.

The end cover is pivotally arranged on the top surface of the main body and is positioned above the first hole, wherein the end cover is provided with a second shaft hole and at least two valve rod holes which penetrate through the end cover, the two valve rod holes are respectively arranged on two sides of the second shaft hole, one valve rod hole is aligned with the first hole to receive the valve rod, and the two sides of the end cover are respectively provided with an opening part.

In an embodiment of the invention, the top surface of the main body has a first shaft hole passing therethrough, the end cap has a second shaft hole passing therethrough, and a shaft is disposed through the first shaft hole and the second shaft hole to enable the end cap to pivot.

The pivot clamp is pivoted on the main body and can move on the surface of the main body with the first hole, wherein one end of the pivot clamp close to the end cover is convexly provided with a clamping part, and the pivot clamp is provided with a groove on the bottom surface; the spring is arranged between the pivot clamp and the main body, wherein one end of the spring is arranged in the groove of the pivot clamp, and the other end of the spring is arranged in the second hole of the main body; a sealing element with a through hole is accommodated in the first hole of the main body; the whistle device is arranged in the whistle hole and can be communicated with the channel of the main body; the clamping part of the pivot clamp penetrates through the opening part of the end cover to be matched with the end cover to clamp the valve rod in the valve rod hole, and the valve rod is prevented from moving during inflation.

The whistle device comprises a whistle piece, a liner, an air plug, a whistle spring and a whistle block, wherein the whistle block is arranged in an air hole of the whistle piece to generate a small gap in the whistle piece, so that air is vibrated to make a sound when flowing out of a sound hole of the whistle piece through the small gap; the whistle spring, the air plug and the gasket are assembled outside the whistle piece in a matching way and then assembled in the whistle hole of the main body, and the plunger arranged on the air plug penetrates into the plunger hole of the main body under the elastic action of the whistle spring to block the passage of the main body from being communicated with the whistle hole; when the plunger is pushed axially to separate the plunger from the plunger hole, the passage is communicated with the whistle hole, so that air can pass through the small gap and the sound hole to make sound.

According to an embodiment of the present invention, the pivot clamp is mounted at a pivot hole on the main body, and the pivot hole is located on the main body adjacent to the outer diameter of the valve stem.

When the pump chuck is used, in order to connect the pump chuck and the valve rod, the pivot clamp is pivoted towards the main body, the valve rod is aligned and inserted into a valve rod hole and a first hole which are corresponding to each other of the end cover, after the valve rod is connected, the pivot clamp is released, the compression spring enables the pivot clamp to push towards the direction opposite to the main body, at the moment, the clamping part arranged at one end of the pivot clamp penetrates through the opening part of the end cover to clamp the valve rod in the valve rod hole, and the valve rod is tightly held between the pivot clamp and the end cover.

When the bicycle is inflated, compressed gas pumped by the tire pump can sequentially pass through the hose, the second hole, the channel and the first hole to the valve rod of the bicycle tire valve in the valve rod hole, so that the gas is pumped into the tire; when the air pressure in the bicycle tire is too high, the overflowed air can be transmitted to the whistle piece of the whistle device communicated with the channel through the channel, so that the air can make a sound through the sound hole, and a user can know that the tire is fully inflated through the sound made by the whistle piece to stop inflating so as to prevent the tire from being exploded and the like.

According to an embodiment of the invention, the stem holes are respectively adapted to receive two different kinds of stems: a valve rod of American type gas valve (Schrader valve) and a valve rod of French type gas valve (Presta valve). When different valve rods need to be received, the two valve rod holes can be exchanged by pivoting the end cover, so that one of the needed valve rod holes is communicated to the first hole of the main body.

Specifically, the inner contour and specification size of the two valve rod holes respectively correspond to the outer contour and specification size of the American type air valve rod and the French type air valve rod, so that the two valve rod holes can respectively correspondingly assemble the American type air valve rod and the French type air valve rod.

In the embodiment of the present invention, the number of the Valve rod holes is two, and the Valve rod holes have outlines corresponding to those of an american type air Valve and a french type air Valve, however, the number of the Valve rod holes and the corresponding outlines are not limited thereto, and the number of the Valve rod holes can be increased and the corresponding outlines of Valve rods of the air valves, such as the Valve rods corresponding to English type air valves (English valves), can be changed as required.

The bicycle tire pump chuck with the inflation indicating tone of the invention utilizes the pivotable end cover and different valve rod holes simultaneously to facilitate the inflation of a user, wherein, the whistle device can send out the indicating tone when the air pressure in the tire is too high, so that the user can know whether the tire is full of air or not through the whistle to stop the inflation action and prevent the tire from exploding and the like; in addition, the pivot clamp is pressed downwards and pivoted towards the main body, so that the problems that the clamp is overlarge in size, interferes with a rim of a bicycle tire and cannot be placed in the rim due to the fact that the existing inflating clamp is pulled upwards can be solved, and the inflating clamp has the advantages of being small in size, not occupying space and easy to adjust.

Drawings

FIGS. 1A and 1B are a perspective view and an exploded perspective view, respectively, showing a pump cartridge of a bicycle tire with an inflation indicator according to a preferred embodiment of the present invention;

FIG. 1C is a plan sectional view showing a pump cartridge of a bicycle tire with an inflation indicator tone in accordance with a preferred embodiment of the present invention;

FIG. 2 is a perspective view of the end cap of the pump cartridge of the bicycle tire with an inflation indicator according to the preferred embodiment of the present invention;

FIG. 3 is a perspective view of the pivot clamp of the pump clamp of the bicycle tire with inflation indicator sound according to the preferred embodiment of the present invention;

FIGS. 4A and 4B are schematic views respectively showing the use of the pump cartridge of the bicycle tire with the inflation indicator according to the preferred embodiment of the present invention;

FIG. 5 is a schematic view showing the use of the pump cartridge of the bicycle tire with the inflation indicator according to the preferred embodiment of the present invention.

100 main body

1001 recess

101 first hole

102 connecting part

103 channel

105 hollow cylinder

1051 second hole

1052 spring receiving groove

1054 whistle hole

10541 plunger hole

106 first shaft hole

1071 pivoting hole

1072 bolt hole

110 pivot clamp

111 groove

112 elongated portion

113 wing part

1131 hole

114 engaging part

1141 internal thread

120 spring

130 end cap

130A upper end cover part

130B lower end cover part

131 second shaft hole

132 stem hole

133 opening part

134 positioning hole

135 positioning column

140 seal

141 holes

150 whistle device

151 whistle

1511 Sound hole

1512 air holes

1513 external screw thread

152 air plug

1521 plunger

153 Whistle spring

154 liner

155 sound block

160 shaft rod

161 axle hole

170 pivot screw

171 bolt

180 sleeve

210 flexible pipe

310 valve stem

Detailed Description

The present invention will be described in more detail with reference to the drawings and reference symbols, so that those skilled in the art can easily understand the present invention without departing from the scope of the present invention.

FIGS. 1A and 1B are a perspective view and an exploded view, respectively, showing a pump cartridge of a bicycle tire with an inflation indication tone in accordance with a preferred embodiment of the present invention. As shown in fig. 1A and 1B, a pump cartridge for a bicycle tire having an inflation indication tone includes: a main body 100, a pivot clamp 110, a spring 120, a cap 130, a seal 140, and a whistle device 150.

Referring to fig. 1C, the main body 100 has a first hole 101, a connecting portion 102, a channel 103, a spring receiving groove 1052 and a whistle hole 1054; the first hole 101 is located on a top surface of the front section of the main body 100, an enlarged concave hole is formed at an end portion adjacent to the top surface of the main body 100, a sealing member 140 having a hole 141 is inserted into the enlarged concave hole, so that the hole 141 and the first hole 101 are linearly and correspondingly communicated, and the sealing member 140 may be a gasket made of soft material such as rubber; the spring receiving groove 1052 and a whistle hole 1054 are located at opposite sides of the middle section of the main body 100; wherein the spring receiving groove 1052 is located on the top surface of the middle section of the main body 100 for receiving a spring 120; the whistle hole 1054 is located on the bottom surface of the middle section of the main body 100; the connection portion 102 is located at one end side of the rear section of the main body 100, and the connection portion 102 is configured to be connected to a hose 210 (shown in fig. 5) of a tire pump (not shown) that supplies compressed air required for inflating a tire of the bicycle and transmits the inflated air to the connection portion 102 of the main body 100 through the hose 210 (shown in fig. 5).

Wherein, the connecting portion 102 has a second hole 1051 at the end; the second hole 1051 extends along the length direction of the main body 100 to form a channel 103 passing through the front, middle and rear sections of the main body 100, and the first hole 101 and the second hole 1051 are communicated through the channel 103, wherein the central axes of the first hole 101 and the second hole 1051 are perpendicular to each other in space and are connected through the channel 103.

Wherein, the bottom of the main body 100 is provided with a raised hollow cylinder 105, the whistle hole 1054 is axially arranged in the hollow cylinder 105 in a penetrating way and is communicated with the channel 103 through a plunger hole 10541; for example, the whistle orifice 1054 may be spatially perpendicular to the central axis of the passageway 103. During normal inflation, compressed air enters through the second holes 1051 of the connecting portion 102 in sequence, and is transmitted through the channel 103 to the first holes 101 and the unsealed whistle holes 1054.

The main body 100 further has a recess 1001 recessed inward on both sides, and the inner contours of the opposite sides of the recess 1001 correspond to the outer contours of the wings 113 of the opposite sides of a pivot clip 110; for example, the recess 1001 may be formed near the middle of the main body 100 and extend slightly obliquely toward the front of the main body 100; for example, the pivot hole 1071 may be adjacent to the lower side of the channel 103, and the central axis of the pivot hole 1071 and the central axis of the channel 103 vertically intersect with each other in space and do not intersect with each other through the main body 100, so that the pivot clip 110 described later can be pivoted to the pivot hole 1071. The pair of wings 113 of the pivot holder 110 do not protrude from both sides of the main body 100 after being mounted to the main body 100 by the inwardly recessed part 1001, which has an advantage of not increasing the lateral width of the main body 100.

FIG. 2 is a perspective view of a preferred embodiment of the end cap 130 of the pump cartridge of the bicycle tire with an inflation indicator of the present invention; as shown in fig. 2, the end cap 130 has a second axial hole 131 and at least two valve rod holes 132 with central axes parallel to each other, wherein the axial end face of the end cap 130 may be oval or other suitable shape, and the overall outer edge profile of the end cap 130 does not exceed the outer edge of the main body 100; the two valve rod holes 132 are respectively disposed at two sides of the second shaft hole 131, preferably, the two valve rod holes 132 and the second shaft hole 131 are linearly disposed on the major axis of the ellipse of the end cap 130, and the side surfaces of two ends of the major axis of the end cap 130 respectively have an opening 133, and the opening 133 extends from the end wall surface of the end cap 130 to the inside by a proper depth to communicate with the valve rod hole 132. Preferably, the end cap 130 may be composed of two parts to facilitate the manufacturing process, for example, as shown in fig. 2, the end cap includes an upper end cap member 130A and a lower end cap member 130B, the opening portions 133 are disposed on opposite end side surfaces of the upper end cap member 130A, and the second shaft holes 131 respectively penetrate the upper end cap member 130A and the lower end cap member 130B; the stem hole 132 penetrates the upper end cap member 130A but does not penetrate the lower end cap member 130B; the lower end surface of the upper end cover part 130A may be provided with two positioning posts 135, and the upper end surface of the lower end cover part 130B is provided with two positioning holes 134 corresponding to the two positioning posts 135, and the upper and lower

end cover parts

130A, 130B are combined with each other by inserting the positioning posts 135 into the positioning holes 134 and are prevented from radial displacement.

In an embodiment of the present invention, the end cap 130 is pivotally disposed on the top surface of the main body 100 and located above the first hole 101, specifically, the top surface of the main body 100 has a first shaft hole 106 therethrough, and a shaft 160 passes through the second shaft hole 131 and the first shaft hole 106 to place the end cap 130 on the main body 100, wherein a shaft hole 161 radially passing therethrough is disposed at a proper position of the shaft 160, and after the shaft 160 passes through the second shaft hole 131 and is inserted into the first shaft hole 106, a bolt 171 passes through a bolt hole 1072 disposed at a side of the main body 100 to be disposed in the shaft hole 161, so that the shaft 160 is fixed on the main body 100 without falling off, and the end cap 130 can pivot relative to the main body 100 with the shaft 160 as a center. The one-hundred-eighty degree pivoting of the end cap 130 relative to the main body 100 may be selected to align one of the stem holes 132 with the first aperture 101 of the main body 100 to receive the stem 310. when the stem 310 enters the corresponding stem hole 132 and first aperture 101, the end of the stem 310 abuts against the bottom of the stem hole 132, and the sealing member 140 is pressed by the top surface of the main body 100 and the lower end cap member 130B to seal the periphery between the stem hole 132 and the first aperture 101, thereby preventing air leakage.

According to an embodiment of the present invention, the stem bores 132 are respectively configured to receive two different kinds of stems 310: a Schrader valve rod and a french valve rod, so the inner contour and dimension of the two valve rod holes 132 correspond to the valve rod of the Schrader valve and the outer contour of the valve rod of the french valve, respectively, so that the two valve rod holes 132 can receive and assemble the valve rod of the Schrader valve and the valve rod of the french valve, respectively.

In the embodiment of the present invention, the number of the Valve rod holes 132 is two, and the Valve rod holes 132 have outlines corresponding to the american-type Valve and the french-type Valve, respectively, however, the number and the outline dimensions of the Valve rod holes 132 are not limited thereto, and the number of the Valve rod holes 132 may be increased according to the requirements and the dimensions and outlines of the corresponding Valve rods, such as English Valve (English Valve) rods, may be changed.

The pivot clip 110 is pivotally connected to the main body 100, and the pivot clip 110 can move on the surface of the main body 100 having the first hole 101, wherein a fastening portion 114 is disposed on a side of the pivot clip 110 close to the end cap 130, and the fastening portion 114 protrudes toward the end cap 130, for example, fig. 1B shows that one end of the fastening portion 114 is inserted into a slot disposed on a side of the elongated portion 112 of the pivot clip 110 close to the end cap 130, so that the other end of the fastening portion 114 protrudes out of the pivot clip 110, and the assembled configuration is as shown in fig. 3. Fig. 3 also shows a perspective view of the pivot clamp 110 of the present invention. The pivot clamp 110 has an elongated portion 112, an engaging portion 114 and a pair of wings 113, the engaging portion 114 is protruded from a side of the elongated portion 112 close to the end cap 130, and a notch is formed at a free end of the protruding portion of the engaging portion 114, and an internal thread 1141 is formed at an inner periphery of the notch. The engaging portion 114 may be an iron plate, and may be combined with the elongated portion 112 of the pivot clip 110 by embedding, adhering or integrally forming, in addition to the aforesaid combination with the pivot clip 110 by inserting.

The top surface of the elongated portion 112 may not exceed the top surface of the end cap 130, so that the engaging portion 114 penetrates into one of the opening portions 133 adjacent to the engaging portion 114 after the pivot clip 110 is assembled to the main body 100, and when the valve stem 310 of the object to be inflated is inserted into the valve stem hole 132, the valve stem 310 may be correspondingly engaged with the thread on the valve stem 310 through the internal thread 1141 (see fig. 4A) to clamp the valve stem 310 in the valve stem hole 132.

The pair of wings 113 are symmetrically disposed on two sides of the elongated portion 112, and the two wings 113 extend from the two sides of the elongated portion 112 to the end cap 130 in a slightly inclined manner, in a front view, the entire pivot clip 110 is generally u-shaped, the main body 100 is disposed in the u-shaped of the pivot clip 110, and left and right side surfaces of the main body 100 respectively correspond to inner side surfaces of the two wings 113 of the pivot clip 110, wherein a hole 1131 is respectively disposed at a proximal end portion of each of the two wings 113 for the pivot screw 170 to pass through the hole 1131 and the pivot hole 1071 of the main body 100 to pivot the pivot clip 110 on the main body 100, wherein the two wings 113 of the pivot clip 110 are respectively disposed in the recesses 1001 at two sides of the main body 100, so that the two wings 113 do not protrude from two sides of the main body 100. In addition, a groove 111 is also formed on the bottom surface of the pivot holder 110 for positioning the upper end of the spring 120 therein. The lower end of the spring 120 is inserted into the spring receiving groove 1052 of the main body 100, so that both ends of the spring 120 elastically act on the pivot clamp 110 and the main body 100, thereby compressing the spring 120 to store the elastic force when the pivot clamp 110 is pressed, and releasing the elastic force of the spring 120 to restore the pivot clamp 110 when the pivot clamp 110 is released.

The whistle device 150 is arranged in the whistle hole 1054, and the whistle device 150 comprises a whistle member 151, an air plug 152, a whistle spring 153, a pad 154 and a whistle block 155; wherein, the whistle 151 has an axially extending air hole 1512, a sound hole 1511 communicating with the air hole 1512 is disposed at the side, and an external thread 1513 is disposed at the outer diameter; the sound block 155 is a short cylinder with an outer diameter corresponding to the inner diameter of the air hole 1512 and a plane is formed on one side of the outer diameter, and the sound block 155 is assembled at the bottom of the air hole 1512 and the plane corresponds to the position of the sound hole 1511, so that a small gap (as shown in fig. 1C) exists between the sound hole 1511 and the air hole 1512, and air vibrates when passing through the gap of the sound hole 1511 to make a sound. Furthermore, a convex part is formed at the upper end of the whistle member 151, and one end of the whistle spring 153 is sleeved on the convex part for positioning; the air plug 152 has a flange, one end of which is sleeved on the other end of the whistle spring 153, the other end of the air plug 152 is a plunger 1521 with a smaller diameter, and the gasket 154 is combined on the periphery of the plunger 1521. The whistle device 150 is locked into the inner screw of the whistle hole 1054 of the main body 100 through the external thread 1513 of the whistle member 151, and the plunger 1521 is inserted into the plunger hole 10541 by the elastic force of the whistle spring 153 to block the passage 103 from communicating with the whistle hole 1054; the passageway 103 communicates with the whistle hole 1054 when the plunger 1521 is pushed axially to disengage the plunger 1521 from the plunger hole 10541.

It should be noted that the end cap 130 is disposed at the front end of the main body 100, and the whistle device 150 is disposed at the middle side of the main body 100 and the other side opposite to the end cap 130, so that when the whistle device 150 is connected to the stem of a bicycle and inflated, the whistle device 150 is located at the outer side of the rim, thereby overcoming the defect of interference between the conventional pump clamp and the rim.

FIGS. 4A and 4B are schematic views respectively showing the use of the pump cartridge of the bicycle tire with the inflation indicator according to the preferred embodiment of the present invention. As shown in fig. 4A, in use, the hose 210 of the tire pump (not shown) is connected to the connecting portion 102, the stem hole 132 is selected according to the tire stem 310 to be inflated, the desired stem hole 132 is pivoted to the upper side of the first hole 101, the pivot clip 110 is pressed and pivoted downward toward the main body 100, the stem 310 of the tire valve is inserted into the stem hole 132 of the end cap 130 to the first hole 101, and then the pivot clip 110 is released.

When the pivot clamp 110 is released, the compression spring 120 will push the pivot clamp 110 in the opposite direction of the body 100, and the engaging portion 114 of the pivot clamp 110 will pass through the opening 133 of the end cap 130 and engage with the external thread of the stem 310 by the internal thread 1141 to clamp the stem 310 in the stem hole 132. In the embodiment of the present invention, the internal thread 1141 on the engaging portion 114 is M6X 1.0P, so that the stem of the american-style valve and the stem of the french valve are tightly held between the pivot clip 110 and the end cap 130 to avoid being disengaged during inflation.

In order to avoid the separation of the hose 210 from the connection portion 102 during inflation, a sleeve 180 may be further sleeved outside the connection portion 102, and the sleeve 180 connects and fixes the hose 210 to the connection portion 102 by a screw connection method.

When the tire is inflated, the compressed air pumped by the tire pump (not shown) will flow through the hose 210, the second hole 1051, the channel 103, the first hole 101 to the stem 310 of the bicycle tire valve in the stem hole 132 in sequence, as indicated by the arrow, so that the air is pumped into the tire, and in this state, the air pressure in the channel 103 is not enough to push the plunger 1521 of the air plug 152, so the air in the channel 103 will not enter the air hole 1512 of the whistle device 151, and the whistle device 150 will not make a sound.

However, when the tire is fully inflated, as shown in fig. 4B, since the air cannot enter the tire through the valve stem 310, the overflowed compressed air will push the plunger 1521 of the air plug 152 to move axially in the channel 103, so that the whistle spring 153 originally supporting the air plug 152 is compressed and deformed, and the air can be discharged from the sound hole 1511 through the whistle hole 1054, the air hole 1512 and the gap beside the whistle 155, wherein the whistle 155 is disposed in the whistle member 151, so that when the air is discharged through the sound hole 1511, the air can be squeezed and vibrated to generate a sound, and the user can know whether the tire is fully inflated through the sound generated by the whistle member 151, thereby stopping the inflation operation and preventing the tire from exploding.

When the hose 210 stops delivering the compressed gas, the pressure of the gas in the passage 103 is reduced, and the whistle spring 153 compressed by the gas pressure is reset, so that the plunger 1521 of the gas plug 152 plugs the plunger hole 10541, and the whistle device 150 does not make a sound. It is worth mentioning that the gasket 154 provided on the periphery of the plunger 1521 provides a further leakage prevention function in order to prevent high-pressure air from leaking through the gap between the plunger hole 10541 and the plunger 1521 under the normal inflation state.

Fig. 5 is a schematic view showing the use of the tire pump cartridge for a bicycle with an inflation indication sound according to the preferred embodiment of the present invention, as shown in fig. 5, the tire pump cartridge for a bicycle (not shown) with an inflation indication sound of the present invention reduces the volume of the tire pump cartridge by pressing and pivoting the pivot clip 110 toward the body 100, so as to be conveniently placed in a rim to be clamped with the stem 310 of the tire valve of a bicycle, and overcomes the problem that the volume is too large to be placed in the rim due to the interference with the rim of the tire of the bicycle caused by the conventional upward pulling, thereby having the advantages of small volume, small space occupation and easy adjustment; and, the whistle device 150 connected to the channel 103 can generate an indication sound when the air pressure in the tire is too high, so that the user can know whether the tire is full of air through the sound generated by the whistle device 150, thereby stopping the inflation operation and preventing the tire from exploding. When different valve stems 310 need to be received, the two valve stem holes 132 can be exchanged by pivoting the end cover 130, so that the user can conveniently inflate the valve stem, and the purpose of the invention is achieved.

In summary, the tire pump chuck for bicycle with inflation indication sound of the present invention utilizes the pivotable end cap and different valve rod holes to facilitate the user to inflate the tire, wherein the whistle member can generate an indication sound when the pressure in the tire is too high, so that the user can know whether the tire is full of air through the whistle to stop the inflation action and prevent the tire from exploding.

It is understood from the foregoing description that the pump cartridge of a bicycle tire with an inflation indicator provided in accordance with the present invention is of industrial value, but the foregoing description is only illustrative of the preferred embodiment of the present invention, and other modifications can be made by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A bicycle tire pump cartridge having an inflation indicator tone for connection to a valve stem of a tire valve, comprising:

a main body, one end of which is provided with a connecting part, the connecting part is provided with a second hole, the second hole extends towards the inside of the main body to form a channel, the top surface of the main body is provided with a first hole communicated with the channel, the bottom surface of the main body is provided with a whistle hole, and the whistle hole is communicated with the channel through a plunger hole;

an end cap pivotally disposed on the top surface of the main body, the end cap having a second axial hole and at least two valve rod holes, the at least two valve rod holes being disposed on two opposite sides of the second axial hole, respectively, such that the at least two valve rod holes and the second axial hole are linearly disposed on the end cap, when the end cap pivots relative to the main body, one of the at least two valve rod holes can be aligned with the first axial hole, two opposite sidewalls of the end cap are respectively provided with an opening portion, and the two opening portions are respectively communicated with the at least two valve rod holes;

a pivot clamp which is pivoted on the main body and can pivot relative to the main body, one end of the pivot clamp close to the end cover is convexly provided with a clamping part, the clamping part extends into the valve rod hole through one opening part of the end cover, a spring is arranged between the pivot clamp and the main body, the elasticity of the spring pushes the pivot clamp to the direction opposite to the main body so as to push away the clamping part to move towards the center direction of the valve rod hole, and when a valve rod of a tire air valve enters the valve rod hole with the clamping part, the clamping part is matched with the valve rod hole to clamp and fix the valve rod; and

a whistle device disposed in the whistle hole of the body, the whistle device further comprising:

a whistle piece, which is provided with an air hole extending axially, and the side edge of the whistle piece is provided with a sound hole communicated with the air hole;

the sound block is a cylinder with the outer diameter corresponding to the inner diameter of the air hole and a plane formed on one side of the outer diameter, and is combined in the air hole, so that the plane corresponds to the position of the sound hole, and a gap is formed between the sound hole and the air hole;

a whistle spring, one end of which is arranged on the whistle piece;

a gas plug having a flange, one end of the flange engaging the other end of the whistle spring, the other end of the flange having a plunger, the plunger having an outer diameter corresponding to the inner diameter of the plunger bore of the body; and

a gasket arranged on the periphery of the plunger;

after the whistle device is combined with the whistle hole of the main body, the plunger penetrates into the plunger hole through the elastic force of the whistle spring to block the passage from being communicated with the whistle hole, and when the plunger is pushed axially by air pressure to separate the plunger from the plunger hole, the passage is communicated with the whistle hole, so that air flows out of the sound hole through the whistle piece to make a sound.

2. The grip of pump for bicycle tire with inflation indicator according to claim 1, wherein the outer diameter of the whistle member is provided with an external thread, the inner diameter of the whistle hole is provided with an internal thread, and the whistle member is assembled in the whistle hole by the external thread matching with the internal thread.

3. The pump cartridge according to claim 2, wherein the body has an enlarged cavity formed in a top surface thereof at an end of the first cavity, the cavity receiving a seal member having a cavity therein, the cavity being in linear correspondence with the first cavity for insertion of a valve stem of a tire.

4. The clamp of pump for bicycle tire according to claim 3, wherein the top surface of the main body has a first axial hole, a shaft is inserted through the second axial hole of the end cap and the first axial hole of the main body to pivotally mount the end cap on the main body, wherein the upper and lower end surfaces of the end cap are oval, and the overall outer contour of the end cap does not exceed the outer edge of the main body.

5. The pump cartridge of the bicycle tire with the inflation indicator according to claim 4, wherein the shaft has a shaft hole extending radially therethrough, and the body has a pin hole formed at a side thereof, and the shaft is fixed to the body by inserting a pin into the pin hole and the shaft hole after the shaft is inserted into the second shaft hole and the first shaft hole.

6. The pump cartridge of the bicycle tire with the inflation indicator according to claim 5, comprising two valve stem holes for receiving the valve stems of a Schrader valve and a french valve respectively.

7. The pump cartridge of claim 6, wherein the pivot clip comprises an elongated portion, a locking portion and a pair of wings, the locking portion is protruded from an end of the elongated portion near the end cap, the wings extend obliquely forward from two sides of the elongated portion, and each of the wings has a hole at one end, the body has a pivot hole at two opposite sides, the wings of the pivot clip are engaged with the two sides of the body, and a pivot screw is inserted through the hole and the pivot hole to pivot the pivot clip to the body.

8. The clamp for pump of bicycle tire according to claim 7, wherein the main body has a recess formed at a position close to the middle portion of the main body and extending obliquely toward the rear portion of the main body, the recess having an inner contour corresponding to an outer contour of the pair of wings of the pivot clip, the pair of wings of the pivot clip being disposed in the recess of the main body, wherein the pivot hole is located in the recess.

9. The clamp for pump of bicycle tire according to claim 8, wherein the engaging portion is an iron plate, one end of the iron plate is fixed to the elongated portion of the pivot clamp, the other end of the iron plate is formed with a notch, and the inner diameter of the notch is formed with an internal thread.

10. The pump cartridge of claim 9, wherein the body has a spring receiving groove on an upper surface thereof, and the pivot clip has a groove on a lower surface thereof, and the spring is positioned by inserting the ends thereof into the spring receiving groove and the groove, respectively.