TWI842422B - Portable air pump - Google Patents

Abstract

A portable air pump includes an inflation assembly, a pivoting seat, a supporting seat, a positioning assembly and a pedal. The inflation assembly includes a cylinder. The pivoting seat is arranged at one end of the cylinder and has a pair of pivoting ears and a pivoting groove formed between the pivot ears. The pivot ears are provided with a positioning portion. The supporting seat is provided with a pivoting portion pivotally connected to the pivot groove and a receiving groove adjacent to the pivoting portion. The positioning assembly includes a positioning member pivotally arranged in the receiving groove and a biasing member arranged between the receiving groove and the positioning member. The positioning member is configured to detachably engage with the positioning portion to provide a positioning function between the pivoting seat and the supporting seat. The biasing member is configured to bias the positioning member towards the pivoting ears. The pedal is arranged on one side of the support seat.

Description

Portable pump

The present invention relates to a portable air pump, and in particular to a portable air pump with a foot pedal, wherein the foot pedal can be positioned at different angles according to usage requirements.

Generally, portable air pumps are compact for portability. Not only do they have many small components, which makes assembly complicated, but also the convenience of pumping air is inevitably lost in pursuit of a compact appearance. For example, portable air pumps usually do not have a pressure gauge that can read the pressure value, the air nozzle is easily obstructed by external objects such as wheel rims and is not easy to connect to the tire, and it is difficult to read the pressure value after connecting the tire, or because of the compact appearance, one can only hold the body of the pump with one hand and hold the handle with the other hand to pump air, which is more laborious.

In view of the defects of the above-mentioned conventional structures, the inventor has designed a portable air pump that can overcome all the shortcomings of the above-mentioned conventional structures.

The present invention provides a portable air pump, which is provided with a foot pedal that can be positioned at different angles according to usage requirements.

The embodiment of the present invention proposes a portable air pump, including: an air pump group, a pivot seat, a support seat, a positioning group and a foot pedal. The air pump group includes a cylinder. The pivot seat is arranged at one end of the cylinder and has a pair of pivot ears and a pivot groove formed between the pair of pivot ears, and the pair of pivot ears is provided with a first positioning portion. The support seat is provided with a pivot portion pivoted to the pivot groove and a receiving groove adjacent to the pivot portion. The positioning group includes a positioning member pivoted to the receiving groove and a biasing member arranged between the receiving groove and the positioning member. The positioning member is configured to be detachably engaged with the first positioning portion of the pair of pivot ears. The biasing member is configured to bias the positioning member toward the pair of pivot ears. The foot pedal is arranged on one side of the support seat.

In one embodiment of the present invention, the pair of hinge ears is further provided with a second positioning portion, the first positioning portion and the second positioning portion are spaced apart and connected to the hinge slot, and the positioning member is configured to be detachably engaged with the first positioning portion or the second positioning portion of the pair of hinge ears.

In one embodiment of the present invention, the positioning member has a pressing portion, a pair of positioning ears extending from the pressing portion, and a pair of third positioning portions disposed on the pair of positioning ears. The pressing portion is spaced apart from the bottom surface of the container, and the pair of third positioning portions are configured to be detachably engaged with the first positioning portion or the second positioning portion of the pair of hinge ears.

In one embodiment of the present invention, the hinge portion is formed on the top side of the support base. The receiving groove is formed on the bottom side of the support base and has a first groove section for the hinge pressing portion and a pair of second groove sections extending from the first groove section and accommodating the pair of positioning ears.

In one embodiment of the present invention, the support seat is further provided with a first through hole penetrating the first slot section. The positioning member is further provided with a second through hole aligned with the first through hole. The positioning assembly further includes a pivot member, and the pivot member is provided through the first through hole, the second through hole and the offset member.

In one embodiment of the present invention, the biasing member is a torsion spring.

In one embodiment of the present invention, the offset member has an abutment portion and a pair of sleeve portions located on both sides of the abutment portion. The abutment portion abuts against the bottom surface of the receiving groove, and the pivot member is penetrated through the first through hole, the second through hole and the sleeve portion.

In one embodiment of the present invention, the first positioning portion and the second positioning portion of the pair of hinge ears are spaced 90 degrees apart from each other along the outer periphery of the pair of hinge ears.

In one embodiment of the present invention, a fixing groove is provided at one end of the support seat, and the foot pedal is provided with a fixing portion fixedly connected to the fixing groove.

In one embodiment of the present invention, the portable air pump further includes a connection group and an axle. The connection group is pivotally connected to the pivot seat and is suitable for connecting the inflatable object. The axle passes through the pair of pivot ears of the pivot seat and the pivot part of the support seat and is connected to the connection group.

Based on the above, the embodiment of the present invention enables the pump to switch between a compact state and a use state by detachably engaging the positioning member with the first positioning portion or the second positioning portion of the pair of hinges, and the pedal can be positioned at different angles relative to the cylinder according to the use requirements. In addition, the user must apply force to the pressing portion of the positioning member to release the engagement relationship between the positioning member and the first positioning portion or the second positioning portion of the pair of hinges, thereby avoiding unexpected relative pivoting between the hinge seat and the support seat to affect the inflation operation.

In order to make the above features and advantages of the present invention more clearly understood, the following is a detailed description of the embodiments with the accompanying drawings.

10: Inflatable set

11: Cylinder

20: hinged socket

21: Earpiece

211: First positioning part

212: Second positioning part

22: Joint groove

30: Support seat

31: Joint

32: Container

321: Bottom

322: First slot section

323: Second slot section

33: First piercing

34:Fixed slot

40: Positioning group

41: Positioning piece

411: Pressing part

412: Positioning ear

413: Third positioning part

414: Second piercing

42: Biasing piece

421: abutment part

422: socket part

43: Pivot parts

50: Foot pedal

51:Fixed part

60: Connection set

70: Joints

Figure 1 is a schematic diagram of the appearance of an embodiment of the portable air pump of the present invention.

Figure 2 is a schematic diagram of the exploded view of the portable air pump shown in Figure 1.

FIG3 is a schematic cross-sectional view of the portable air pump shown in FIG1, showing the air pump in a compact state.

Figure 4 is a continuation of Figure 3, showing the positioning member being separated from the second positioning portion.

Figure 5 is a continuation of Figure 4, showing the pivoting of the pivot seat relative to the support seat.

Figure 6 is a continuation of Figure 5, showing the pump in use, with the positioning member locked in the first positioning portion.

Some embodiments of the present invention will be described in detail with reference to the accompanying drawings. The component symbols cited in the following description will be regarded as the same or similar components when the same component symbols appear in different drawings. The following embodiments are only part of the present invention and do not disclose all possible implementations of the present invention. More specifically, the following embodiments are only examples of portable air pumps within the scope of the patent application of the present invention.

Please refer to Figures 1 to 3, which are schematic diagrams of the appearance, exploded diagrams and cross-sectional diagrams of an embodiment of the portable air pump of the present invention. The portable air pump provided in this embodiment includes an air pump group 10, a pivot seat 20, a support seat 30, a positioning group 40 and a pedal 50. The air pump group 10 includes a cylinder 11. It can be understood that the air pump group 10 can also include other components such as a piston rod that can generate relative movement with the cylinder 11 to compress the air in the cylinder 11, which will not be elaborated here. The pivot seat 20 is arranged at one end of the cylinder 11 and has a pair of pivot ears 21 and a pivot groove 22 formed between the pair of pivot ears 21. The pair of pivot ears 21 are provided with a first positioning portion 211. The support seat 30 is provided with a hinge portion 31 pivoted to the hinge groove 22 and a receiving groove 32 adjacent to the hinge portion 31. The positioning assembly 40 includes a positioning member 41 pivoted to the receiving groove 32 and a biasing member 42 disposed between the receiving groove 32 and the positioning member 41. The positioning member 41 is configured to be releasably engaged with the first positioning portion 211 of the pair of hinge ears 21 so that the pump can be switched between a compact state (FIG. 3) and a use state (FIG. 6). The biasing member 42 is configured to bias the positioning member 41 toward the pair of hinge ears 21 to provide a positioning effect between the positioning member 41 and the receiving groove 32. The foot pedal 50 is disposed on one side of the support seat 30 for the user to step on when the pump is in the use state.

Furthermore, the pair of hinge ears 21 of this embodiment can be provided with a second positioning portion 212, the first positioning portion 211 and the second positioning portion 212 are spaced apart and connected to the hinge slot 22, and the positioning member 41 can be configured to be releasably engaged with the first positioning portion 211 or the second positioning portion 212 of the pair of hinge ears 21.

In order to enable the positioning member 41 to be releasably engaged with the first positioning portion 211 or the second positioning portion 212 of the pair of hinge ears 21, the positioning member 41 has a pressing portion 411, a pair of positioning ears 412 extending from the pressing portion 411, and a pair of third positioning portions 413 disposed on the pair of positioning ears 412. The pressing portion 411 is spaced apart from a bottom surface 321 of the receiving groove 32, and the pair of third positioning portions 413 are configured to be releasably engaged with the first positioning portion 211 or the second positioning portion 212 of the pair of hinge ears 21.

Furthermore, the hinge portion 31 is formed on the top side of the support base 30, and the receiving groove 32 is formed on the bottom side of the support base 30 and has a first groove section 322 for pivoting the pressing portion 411 and a pair of second groove sections 323 extending from the first groove section 322 and accommodating the pair of positioning ears 412.

In order to pivot the positioning member 41 in the receiving groove 32, the support seat 30 is further provided with a first through hole 33 penetrating the first groove section 322. The positioning member 41 also has a second through hole 414 aligned with the first through hole 33. The positioning assembly 40 also includes a pivot member 43, and the pivot member 43 is penetrated through the first through hole 33, the second through hole 414 and the offset member 42.

In this embodiment, in order to enable the biasing member 42 to bias the positioning member 41 toward the pair of hinge ears 21, that is, to apply a biasing force to the positioning member 41, the biasing member 42 can be a torsion spring. Further, the biasing member 42 has an abutting portion 421 and a pair of sleeve portions 422 located on both sides of the abutting portion 421. The abutting portion 421 abuts against the bottom surface 321 of the receiving groove 32, and the hinge member 43 is penetrated through the first through hole 33, the second through hole 414 and the sleeve portion 422.

In order to make the pump better fit the usage environment in a compact state and in use, the first positioning portion 211 and the second positioning portion 212 of the pair of pivot ears 21 are spaced 90 degrees apart from each other along the outer periphery of the pair of pivot ears.

In order to enable the foot pedal 50 to be fixedly connected to the support seat 30, a fixing groove 34 is provided at one end of the support seat, and the foot pedal 50 is provided with a fixing portion 51 fixedly connected to the fixing groove 34. It can be understood that the foot pedal 50 and the support seat 30 can also be connected in other ways such as integral molding.

The portable air pump shown in this embodiment can also include a connection group 60 and a shaft member 70. The connection group 60 is pivoted to the pivot seat 20 and is suitable for connecting the inflatable object (not shown in the figure). The shaft member 70 is inserted through the pair of pivot ears 21 of the pivot seat 20 and the pivot portion 31 of the support seat 30 and connected to the connection group 60 for the purpose of quick assembly. In addition, it can be understood that the support seat 30 can also be provided with components such as a pressure gauge at an appropriate location.

The following is a description of the operation of the portable air pump shown in this embodiment with reference to Figures 3 to 6. Figure 3 shows that the air pump is in a compact state, and the pair of third positioning portions 413 of the positioning member 41 are locked in the second positioning portions 212 of the pair of hinge ears 21. The locking relationship between the pair of third positioning portions 413 of the positioning member 41 and the second positioning portions 212 of the pair of hinge ears 21 prevents the hinge seat 20 and the support seat 30 from pivoting relative to each other, and the air pump is positioned in a compact state. At this time, the foot pedal 50 and the cylinder 11 are substantially parallel to each other and arranged in a straight line for easy carrying. It can be understood that the present invention can also be provided without the second positioning portion 212, that is, the air pump does not need to be positioned when it is in a compact state.

FIG. 4 shows that the user applies a force greater than the biasing force of the biasing member 42 to press the pressing portion 411 of the positioning member 41, so that the positioning member 41 pivots relative to the receiving groove 32 and approaches the bottom surface 321 of the receiving groove 32, the pair of positioning ears 412 are slightly exposed from the receiving groove 32, and the pair of third positioning portions 413 of the positioning member 41 are separated from the second positioning portions 212 of the pair of pivoting ears 21 to release the locking relationship between the pair of third positioning portions 413 and the second positioning portions 212 of the pair of pivoting ears 21, so that the pivot seat 20 and the support seat 30 can pivot relative to each other as shown in FIG. 5. As mentioned above, if the second positioning portion 212 is not provided in the present invention, the pivot seat 20 and the support seat 30 can directly pivot relative to each other and change from a compact state to a use state.

FIG6 shows that the hinge seat 20 pivots relative to the support seat 30 until the pair of third positioning portions 413 of the positioning member 41 are engaged with the first positioning portions 211 of the pair of hinge ears 21 under the biasing force of the biasing member 42. The hinge seat 20 and the support seat 30 cannot pivot relative to each other due to the engaging relationship between the pair of third positioning portions 413 of the positioning member 41 and the first positioning portions 211 of the pair of hinge ears 21, and the air pump is positioned in a use state. At this time, the foot pedal 50 and the cylinder 11 are generally arranged in an inverted T shape. The user can step on the foot pedal 50 and apply force to the pumping assembly 10 with both hands to inflate. The locking relationship between the pair of third positioning portions 413 of the positioning member 41 and the first positioning portions 211 of the pair of hinge ears 21 can prevent unexpected relative pivoting between the hinge seat 20 and the support seat 30 to affect the inflation operation.

In summary, the above embodiment of the present invention enables the pump to switch between a compact state and a use state by detachably engaging the positioning member 41 with the first positioning portion 211 or the second positioning portion 212 of the pair of hinge ears 21, and the pedal 50 can be positioned at different angles relative to the cylinder 11 according to the use requirements. In addition, the user must apply force to the pressing portion 411 of the positioning member 41 to release the engagement relationship between the positioning member 41 and the first positioning portion 211 or the second positioning portion 212 of the pair of hinge ears 21, so as to avoid unexpected relative pivoting between the hinge seat 20 and the support seat 30 and affect the inflation operation.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the attached patent application.

10: Inflatable set

11: Cylinder

20: hinged socket

21: Earpiece

211: First positioning part

212: Second positioning part

22: Joint groove

30: Support seat

31: Joint

32: Container

321: Bottom

322: First slot section

323: Second slot section

33: First piercing

40: Positioning group

41: Positioning piece

411: Pressing part

412: Positioning ear

413: Third positioning part

414: Second piercing

42: Biasing piece

421: abutment part

422: socket part

43: Pivot parts

50: Foot pedal

51:Fixed part

60: Connection set

70: Joints

Claims (10)

A portable air pump comprises: an air pump assembly, comprising a cylinder; a pivot seat, arranged at one end of the cylinder and having a pair of pivot ears and a pivot groove formed between the pair of pivot ears, the pair of pivot ears being provided with a first positioning portion; a support seat, provided with a pivot portion pivotally connected to the pivot groove and a receiving groove adjacent to the pivot portion; a positioning assembly, comprising a positioning member pivotally connected to the receiving groove and a biasing member arranged between the receiving groove and the positioning member, the positioning member being configured to be detachably engaged with the first positioning portion of the pair of pivot ears, the biasing member being configured to bias the positioning member toward the pair of pivot ears; and a pedal, arranged at one side of the support seat. As described in claim 1, the portable air pump, wherein the pair of hinged ears is further provided with a second positioning portion, the first positioning portion and the second positioning portion are spaced apart and connected to the hinged slot, and the positioning member is configured to be detachably engaged with the first positioning portion or the second positioning portion of the pair of hinged ears. A portable air pump as described in claim 2, wherein the positioning member has a pressing portion, a pair of positioning ears extending from the pressing portion, and a pair of third positioning portions disposed on the pair of positioning ears, the pressing portion is spaced apart from a bottom surface of the container, and the pair of third positioning portions are configured to be detachably engaged with the first positioning portion or the second positioning portion of the pair of hinge ears. A portable air pump as described in claim 3, wherein the hinge portion is formed on the top side of the support base, the receiving groove is formed on the bottom side of the support base and has a first groove section pivotally mounting the pressing portion and a pair of second groove sections extending from the first groove section and accommodating the pair of positioning ears. As described in claim 4, the support base is provided with a first through hole penetrating the first slot section, the positioning member is provided with a second through hole aligned with the first through hole, and the positioning assembly further includes a pivot member, and the pivot member is provided through the first through hole, the second through hole and the offset member. A portable air pump as described in claim 5, wherein the biasing member is a torsion spring. As described in claim 6, the biasing member has an abutment portion and a pair of sleeve portions located on both sides of the abutment portion, the abutment portion abuts against the bottom surface of the receiving groove, and the pivot member is penetrated through the first through hole, the second through hole and the pair of sleeve portions. A portable air pump as described in any one of claims 2 to 7, wherein the first positioning portion and the second positioning portion of the pair of pivot ears are spaced 90 degrees apart from each other along the outer periphery of the pair of pivot ears. A portable air pump as described in any one of claims 1 to 7, wherein a fixing groove is provided at one end of the support seat, and the foot pedal is provided with a fixing portion fixedly connected to the fixing groove. The portable air pump as described in any one of claims 1 to 7 further comprises: a connection set, pivotally connected to the pivot seat and suitable for connecting an inflatable object; an axle, passing through the pair of pivot ears of the pivot seat and the pivot part of the support seat and connected to the connection set.

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