Inflator with upper cover capable of displaying pressure value

Abstract

The invention provides an inflator with an upper cover capable of displaying a pressure value, and the inflator comprises a body which is provided with an air chamber, and one end of the air chamber is an open end; an air outlet channel is communicated with the air chamber; the push rod is arranged in the air chamber; the driving unit is provided with a driving part, and the driving unit is communicated with the air outlet channel; the upper cover covers the open end of the air chamber of the body; the pressure display unit is provided with a linkage part and a display part; the linkage part is linked with the driving part, and the display part is driven by the linkage part to generate position change rotating with the push rod as the axis.

Description

TECHNICAL FIELD

[0001] The present invention relates to an inflator, in particular, to an inflator with a pressure display unit disposed on the upper cover for displaying the pressure value. BACKGROUND

[0002] Generally, in order to determine the pressure value of the inflator, a pressure gauge is disposed on the inflator or connected to the inflator. When the inflator compresses air, the user can determine whether the pressure value has reached the predetermined value by the indication of the pressure gauge, and then decide whether to continue the inflating action.

[0003] However, the pressure gauge of the existing inflator, especially the floor type inflator, is usually disposed on the base or the bottom, which is farthest from the user's eyes. When observing the pressure value, the user needs to interrupt the inflating action to observe the pressure gauge, or cannot accurately observe the value displayed by the pressure gauge, resulting in errors in the pressure value of the inflator. SUMMARY

[0004] The present invention aims to provide an inflator with an upper cover displaying the pressure value, which integrates the pressure display unit in the upper cover of the inflator, so that the change of the value can be easily observed.

[0005] The present invention provides an inflator with an upper cover displaying the pressure value, which comprises:

[0006] a body having a gas chamber with an open end; an air outlet channel connected to the gas chamber;

[0007] a push rod having a pushing part and a rod body; the pushing part is disposed in the gas chamber and can be pressed by the rod body;

[0008] a driving unit provided with a driving part, the driving unit is connected to the air outlet channel, so that the driving part is driven by the pressure change of the air outlet channel;

[0009] an upper cover covering the open end of the gas chamber of the body, the upper cover is provided with a through hole for the rod body of the push rod; the upper cover is provided with a pressure display unit, the pressure display unit has a linkage part and a display part; the linkage part is connected to the driving part, and the display part is driven by the linkage part to produce a position change rotating around the through hole as the axis.

[0010] Through the above design, the pressure display unit of the present invention can be disposed on the upper cover and rotate around the center of the push rod as the axis to produce a circular pressure value indication.

[0011] Preferably, the driving unit is a piston rod, the driving part is a rack, and the linkage part is a gear; the piston rod is driven by the pressure change of the air outlet channel to move the rack of the driving part, and the gear of the linkage part is driven by the rack of the driving part to rotate.

[0012] Preferably, the pressure display unit further comprises a conversion gear having a large gear part and a small gear part; the large gear part is engaged with the gear of the linkage part, and the small gear part is engaged with the rack of the driving part.

[0013] Preferably, the pressure display unit further comprises a conversion gear having a large gear part and a small gear part; the large gear part is engaged with the gear of the linkage part, and the small gear part is engaged with the rack of the driving part.

[0014] Preferably, the gear of the linkage part has a coupling hole in the center, which is coaxially arranged around the through hole of the upper cover.

[0015] Preferably, the pressure display unit further comprises a bearing; the conversion gear and the gear of the linkage part are pivotally arranged on the bearing; and the bearing is fixed to the upper cover.

[0016] Preferably, the piston rod comprises a cylinder and a piston; the piston is slidably arranged in the cylinder; the cylinder is connected to the air outlet channel; the piston changes its position in the cylinder according to the pressure change of the air outlet channel; and the rack of the driving part is arranged on the piston and changes its position according to the piston.

[0017] Preferably, the display part is a pointer; the pointer rotates around the center of the through hole of the upper cover; and the upper cover has a display window.

[0018] Preferably, the upper cover comprises a base and a cover body; the base is fixed to the open end of the body; the cover body is arranged on the base; a containing space is formed between the base and the cover body; and the pressure display unit and the driving unit are arranged in the containing space.

[0019] Preferably, the cover body has a numerical display plate at the position of the display window; and the pointer of the display part is arranged between the display window and the numerical display plate.

[0020] Therefore, when the inflator is in operation, the user can directly hold the push rod and directly observe the pressure change of the pressure display unit in the upper cover from the top, which is easy to observe and reduces the operation of observing the pressure during the inflation; and the pressure display unit is integrated into the upper cover, which reduces the overall volume. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0022] Figure 1 A perspective view of the air pump according to the preferred embodiment of the present application.

[0023] Figure 2 An exploded view of the air pump according to the preferred embodiment of the present application.

[0024] Figure 3 A sectional view of the air pump according to the preferred embodiment of the present application.

[0025] Figure 4 A sectional view of the upper cover of the air pump according to the preferred embodiment of the present application.

[0026] Figure 5 Another sectional view of the upper cover of the air pump according to the preferred embodiment of the present application.

[0027] Figure 6 Another sectional view of the upper cover of the air pump according to the preferred embodiment of the present application.

[0028] Figure 7 A numerical display sectional view of the air pump according to the preferred embodiment of the present application when not pumping.

[0029] Figure 8 A numerical display sectional view of the air pump according to the preferred embodiment of the present application when pumping.

[0030] Wherein, 10 air pump; 20 body; 21 air chamber; 22 air outlet passage; 221 air outlet pipe; 23 support seat; 30 push rod; 31 push part; 32 rod body; 40 driving unit; 41 piston rod; 411 cylinder body; 412 piston; 42 driving part; 421 rack; 50 upper cover; 51 base; 52 cover body; 521 display window; 522 numerical display plate; 53 perforation; 60 pressure display unit; 61 bearing seat; 62 conversion gear; 621 large tooth part; 622 small tooth part; 63 linkage part; 631 gear; 632 combination hole; 64 display part; 641 pointer. DETAILED DESCRIPTION

[0031] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0032] Please refer to Figures 1 to 6 The present application provides a preferred embodiment of a pump 10, which comprises:

[0033] A body 20, please refer to Figure 1 and 2 , has a gas chamber 21, the top end of which is an open end 211; the bottom end of the gas chamber 21 is provided with a gas outlet channel 22 connected with the gas chamber 21; one end of the gas outlet channel 22 is arranged near the open end 211, and the other end is connected with a gas outlet pipe 221, the end of which can be connected with an inflation connector or other related equipment; the bottom of the body 20 is provided with a support seat 23; the structure inside the body 20 is the structure of an existing pump, which can be replaced by a similar structure, and will not be described in detail;

[0034] A push rod 30, which has a pushing part 31 and a rod body 32; the pushing part is arranged in the gas chamber 21 of the body 20 and can be actuated by the rod body 32 to press the gas in the gas chamber 21, thereby forming a compressed air effect; after the air in the gas chamber 21 is compressed, the compressed gas is transmitted to the position of the gas outlet channel 22, which transmits the compressed gas to the gas outlet pipe 221 for inflation;

[0035] A driving unit 40, please refer to Figure 2 and 6 , which is composed of a piston rod 41 and a driving part 42; the piston rod 41 is connected with the gas outlet channel 22; the piston rod 41 comprises a cylinder body 411 and a piston 412; the piston 412 is slidably arranged in the cylinder body 411, and the cylinder body 411 is connected with the gas outlet channel 22, so that the piston 412 can change its position in the cylinder body 411 with the change of the pressure of the gas outlet channel 22; the driving part 42 is composed of a rack 421, which is arranged on the piston 412 and changes its position with the piston 412, so that the rack 421 can produce linear reciprocating motion on the piston rod 41 with the change of pressure.

[0036] An upper cover 50 is arranged on the open end 211 of the air chamber 21 of the body 20. The upper cover 50 is composed of a base 51 and a cover 52. The base 51 is fixed on the open end 211. The cover 52 is arranged on the base 51. A space is formed between the base 51 and the cover 52. A hole 53 is arranged in the center of the upper cover 50 for the rod 32 of the push rod 30 to pass through. The space and the hole 53 are separated. A display window 521 is arranged on the top of the cover 52. The display window 521 is a sector structure arranged around the hole 53. A numerical display plate 522 is arranged below the display window 521 of the cover 52. Numerical values are arranged on the numerical display plate 522. The numerical values are also distributed in a sector shape. Besides, the numerical values can also be arranged on the display window 521 or the outside of the cover 52.

[0037] A pressure display unit 60 is shown in Figures 2 to 6 The pressure display unit 60 has a support 61, a conversion gear 62, a linkage 63 and a display 64. The support 61 is fixed in the space. The conversion gear 62 and the linkage 63 are pivotally arranged on the support 61. The conversion gear 62 has a large gear part 621 and a small gear part 622. The number of teeth of the large gear part 621 is greater than that of the small gear part 622. The small gear part 622 is engaged with the rack 421 of the driving part 42. The linkage 63 is a gear 631. The gear 631 is engaged with the large gear part 621. The driving part 42 can drive the conversion gear 62 and then drive the linkage 63. A combination hole 632 is arranged in the center of the gear 631. The combination hole 632 makes the gear 631 arranged around the hole 53. The gear 631 can rotate around the hole 53 as the axis. The display 64 is a pointer 641 arranged on the outside of the linkage 63. The pointer 641 is driven by the linkage 63 to rotate around the hole 53 as the axis. The pointer 641 is arranged between the display window 521 of the cover 52 and the numerical display plate 522. The rotation angle of the pointer 641 corresponds to the numerical value. The numerical value is displayed on the numerical display plate 522. The numerical value can be observed through the display window 521. The display 64 can also be arranged on the inside of the linkage 63 to indicate the direction of the hole 53.

[0038] In use, please refer to Figure 7 and 8As shown, the user can set the support base 23 of the body 20 on the ground or other fixed position, and fix it through the foot pedal or other means, then hold the rod body 32 of the push rod 30 in the air chamber 21 of the body 20 and reciprocate it to pump, so that the gas can be continuously compressed through the push part 31, and the compressed gas is transmitted to the air outlet passage 22, and then the air outlet pipe 221 is inflated, and the compressed gas is transmitted to the driving unit 40 through the air outlet passage 22. The piston rod 41 is subjected to the action of the gas pressure to form a pushing stroke change, and the piston rod 41 drives the rack 421 of the driving part 42 to change position. When the rack 421 moves linearly, the pinion 622 meshing with the rack 421 rotates relatively and synchronously drives the gear 631 of the connecting part 63 to rotate, so that the pointer 641 of the display part 64 can display the corresponding gas pressure value on the numerical display plate 522, so that the user can directly observe the change of the pressure value while inflating through the push rod 30, without stopping the inflation action to observe, and because the pressure display unit 60 is arranged in the upper cover 50, the overall structure can be simplified and the setting volume can be reduced, without protruding on the body 20 or needing to increase the pressure gauge externally.

[0039] When the inflation process is completed, the air outlet pipe 221 is not connected to the object, and the gas can be freely discharged, the piston 412 of the piston rod 41 returns to the original unstressed state, the rack 421 of the driving part 42 also returns to the starting position, and the connecting part 63 rotates relatively and drives the pointer 641 to return to the position with a value of zero, waiting for the next gas pressure driving action.

[0040] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An inflator with an upper cap capable of displaying a pressure value, characterized in that, The utility model relates to a pressure display device, comprising: a body having a gas chamber with an open end; an air outlet channel connected to the gas chamber; a push rod having a pushing part and a rod body; the pushing part is arranged in the gas chamber and can be pressed by the rod body; a driving unit provided with a driving part, the driving unit is connected to the air outlet channel, so that the driving part is driven by the pressure change of the air outlet channel; an upper cover covering the open end of the gas chamber of the body, the upper cover is provided with a through hole for the rod body of the push rod; a pressure display unit arranged on the upper cover, the pressure display unit has a linkage part and a display part; the linkage part is connected to the driving part, and the display part is driven by the linkage part to produce a position change rotating around the through hole.

2. The inflator with the upper cap capable of displaying the pressure value according to claim 1, wherein, The driving unit is a piston rod, the driving part is a rack, and the linkage part is a gear; the piston rod is driven by the pressure change of the air outlet channel to displace the rack of the driving part, and the gear of the linkage part is driven by the rack of the driving part to rotate.

3. The inflator according to claim 2, wherein The pressure display unit further comprises a conversion gear having a large gear part and a small gear part; the large gear part is engaged with the gear of the linkage part, and the small gear part is engaged with the rack of the driving part.

4. The inflator according to claim 2, wherein The gear of the linkage part is provided with a combination hole coaxially arranged around the through hole of the upper cover.

5. The inflator according to claim 2, wherein The pressure display unit further comprises a bearing, and the conversion gear and the gear of the linkage part are pivoted on the bearing; the bearing is fixed on the upper cover.

6. The inflator according to claim 2, wherein The piston rod comprises a cylinder and a piston; the piston is slidably arranged in the cylinder, the cylinder is connected to the air outlet channel, and the piston changes position in the cylinder according to the pressure change of the air outlet channel; the rack of the driving part is arranged on the piston and changes position with the piston.

7. The inflator with a cap capable of displaying a pressure value according to claim 1 or 2, wherein The display part is a pointer rotating around the center of the through hole of the upper cover; the upper cover is provided with a display window.

8. The pump with pressure gauge upper cover according to claim 7, characterized in that, The upper cover comprises a base and a cover body; the base is fixed on the open end of the body, the cover body covers the base, and a containing space is formed between the base and the cover body; the pressure display unit and the driving unit are arranged in the containing space.

9. The inflator according to claim 8, wherein The cover body is provided with a numerical display plate at the position of the display window, and the pointer of the display part is arranged between the display window and the numerical display plate.

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