JP2012192757A - Air jack device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air jack device that has a limitless raising amount and does not deflate entirely even when a hole and the like is formed therein.SOLUTION: The air jack device 1 includes: a vehicle receiving part 11 coming into contact with a vehicle 3 or the like during jacking up; a base part 12 placed on the ground surface during jacking up; and an air bag part 13 interposed between the base part 12 and the vehicle receiving part 11, constituted of a plurality of expansion bags 13a1-13a3 connected to one another in a vertical direction, and folded in a deflated state before compressed air is supplied thereinto while being inflated when being supplied with the compressed air, where the plurality of expansion bags 13a1-13a3 connected to one another in a vertical direction are inflated so as to raise the vehicle receiving part 11 relative to the base part 12.

Description

  The present invention relates to an air jack device used for jacking up a vehicle or the like.

  Currently, vehicle-mounted jacks are required to be lightweight and simple from the market by vehicle manufacturers. Therefore, the present applicant has proposed a resin air jack device that injects compressed air from an air compressor into an air bag to inflate it to jack up a vehicle or the like instead of a conventional metallic pantograph jack. (For example, refer patent documents 1-3.).

JP 2009-248709 A JP 2009-248845 A JP 2009-249144 A

  However, the conventional ones described in Patent Documents 1 to 3 inject compressed air into one inflatable bag and inflate it to jack up a vehicle or the like. When opened, there were problems such as all wilt and poor stability during expansion.

  Therefore, the present invention firstly has no limit on the amount of increase, and even if a hole or the like is opened, it can be prevented from being all deflated, and secondly, stability can be further improved during expansion. An object is to provide an air jack device.

In order to solve the above-described problems, an air jack device of the present invention includes a vehicle receiving portion that a vehicle hits when jacking up, a base portion that is placed on the ground when jacking up, and a space between the base portion and the vehicle receiving portion. It is composed of a plurality of inflatable bags sandwiched between and vertically connected, and is folded in a deflated state before compressed air is supplied. The air jack device includes an airbag portion that inflates the airbag receiving portion to raise the vehicle receiving portion relative to the base portion.
Here, it is further preferable that the airbag portion further includes an outer bag portion that is provided outside the plurality of inflation bags connected in the vertical direction and protects the plurality of inflation bags.
An outer valve portion to which a compressed air hose from an air compressor is connected is attached to the outer side of the outer bag portion, while the outer bag portion and the plurality of the inner bag portions are attached to the inner side of the outer bag portion. The expansion valve is connected to the outer valve portion, and is connected to the inner valve portion having a plurality of branched compressed air discharge ports, and to the plurality of compressed air discharge ports of the inner valve portion, respectively. It is further preferable that a plurality of compressed air hoses for supplying compressed air to each of the inflatable bags are provided.
In addition, the base portion includes a bottom surface portion placed on the ground, and an airbag contact surface portion with which the lowermost inflation bag in the airbag portion contacts, and the airbag contact surface portion of the base portion Is more preferably a spherical concave shape recessed in a hemispherical shape.
In addition, the vehicle receiving portion includes a vehicle contact surface portion on which a vehicle hits and an airbag contact surface portion on which the uppermost inflation bag in the airbag portion contacts, and the air bag contact of the vehicle receiving portion. It is further preferable that the contact surface portion has a spherical concave shape that is recessed in a hemispherical shape.
In addition, a fitting groove portion into which a jack point of a vehicle is fitted is formed on the vehicle contact surface portion of the vehicle receiving portion closer to the vehicle than the center of the airbag portion, while the airbag of the base portion It is further preferable that the apex of the spherical recess shape of the airbag contact portion of the contact surface portion and the vehicle receiving portion is deviated from the formation position of the fitting groove portion in the vehicle contact surface portion of the vehicle receiving portion. .
In addition, a fitting groove portion into which a jack point of a vehicle is fitted is formed on the vehicle contact surface portion of the vehicle receiving portion closer to the vehicle than the center of the airbag portion, while the airbag of the base portion Further, the apex of the spherical recess shape of the airbag contact portion of the contact surface portion and the vehicle receiving portion coincides with the formation position of the fitting groove portion in the vehicle contact surface portion of the vehicle receiving portion. good.
An insertion groove portion into which a jack point of the vehicle is inserted is formed on the vehicle contact surface portion of the vehicle receiving portion on the side closer to the vehicle than the center of the airbag portion, while on the side surface side of the base portion. More preferably, an outer valve portion to which a hose for compressed air from an air compressor is connected is provided on the side surface farther from the vehicle than the center of the airbag portion.
Further, in the air jack device, it is further preferable that a donut-shaped inflatable bag for preventing the plurality of inflatable bags from falling down is interposed between the plurality of inflatable bags constituting the airbag portion. .
Further, in the air jack device, the plurality of inflatable bags constituting the air bag portion are welded, and all of the perimeter of the plurality of inflatable bags between the vehicle receiving portion and the base portion are surrounded. In order to prevent the plurality of expansion bags from collapsing at a plurality of positions, respectively, when the plurality of expansion bags are not expanded, the plurality of expansion bags are not expanded. It is further preferable to provide an elastic member that stretches and applies a tensile force to the plurality of inflatable bags.
Further, in the air jack device, the plurality of inflatable bags are prevented from falling when inflated at a plurality of positions surrounding all of the periphery of the plurality of inflatable bags between the vehicle receiving portion and the base portion. In order to do so, it is a metal folding expansion / contraction member that folds and stretches via a plurality of link mechanism connection portions, and among the plurality of link mechanism connection portions of the folding expansion / contraction member, the inner link mechanism connection portion is opposite It is further preferable that the inner link mechanism connecting portion to be connected by a metallic member.
Further, in the air jack device, the plurality of inflatable bags constituting the air bag portion are welded, and all of the perimeter of the plurality of inflatable bags between the vehicle receiving portion and the base portion are surrounded. In order to prevent the plurality of expansion bags from collapsing at a plurality of positions, respectively, when the plurality of expansion bags are not expanded, the plurality of expansion bags are not expanded. A plurality of stages of elastic members that stretch and apply a tensile force to the plurality of expansion bags; and a ring member having a central diameter that surrounds the plurality of expansion bags between the plurality of stages of the elastic members. Even better.
Further, in the air jack device, the plurality of inflation bags constituting the airbag portion are welded, and have a center diameter surrounding the circumference of the plurality of inflation bags, the vehicle receiving portion, and the base In order to prevent the plurality of inflation bags from collapsing when inflated, the elastic force of the plurality of inflation bags is provided when the plurality of inflation bags are not inflated. It is further preferable to have a spring member that is contracted against the above and expands by its own elastic force when the plurality of inflatable bags are inflated.

  In the air jack device of the present invention, the airbag portion is composed of a plurality of inflatable bags connected in the vertical direction. Therefore, if the number of inflated bags is increased, there is no limit to the amount of increase. Even if a hole or the like is opened in the inflatable bag, since there are other inflatable bags, it is possible to prevent all of the inflated bags from wilting.

(A)-(c) is the perspective view, top view, and sectional drawing which respectively show the external appearance when the air jack apparatus of Embodiment 1 which concerns on this invention expand | swells. It is a partial expanded sectional view of the airbag part 13 of the air jack apparatus of Embodiment 1 which concerns on this invention. (A)-(c) is a state transition diagram which shows the state from which the air jack apparatus of Embodiment 1 which concerns on this invention changes from a folding state to an expansion state, respectively. (A)-(c) is the rear view of the vehicle receiving part which comprises the air jack apparatus of Embodiment 2 which concerns on this invention, respectively, the top view of a base part, and sectional drawing. (A)-(c) is sectional drawing and sectional drawing of the vehicle receiving part and base part which respectively comprise the air jack apparatus of Embodiment 3 which concerns on this invention. It is a schematic sectional drawing which shows the structure of the air jack apparatus (at the time of expansion | swelling) of Embodiment 4 which concerns on this invention. It is a schematic sectional drawing which shows the other example of the structure of the air jack apparatus (at the time of expansion | swelling) of Embodiment 4 which concerns on this invention. It is a schematic sectional drawing which shows the structure of the air jack apparatus (at the time of expansion) of Embodiment 5 which concerns on this invention. It is a schematic sectional drawing which shows the structure of the air jack apparatus (at the time of expansion | swelling) of Embodiment 6 which concerns on this invention. It is a front view which shows the structure of the air jack apparatus (at the time of expansion) of Embodiment 7 which concerns on this invention. It is a schematic sectional drawing which shows the structure of the air jack apparatus (at the time of expansion) of Embodiment 8 which concerns on this invention.

  Embodiments of an air jack device according to the present invention will be described below in detail with reference to the accompanying drawings.

Embodiment 1 FIG.
FIGS. 1A to 1C are a perspective view, a plan view, and a cross-sectional view showing an external appearance when the air jack device 1A according to Embodiment 1 of the present invention is inflated, respectively. FIG. 2 is a partially enlarged cross-sectional view of the airbag portion 13 of the air jack device 1A according to Embodiment 1 of the present invention.

  As shown in FIGS. 1A to 1C, the air jack device 1A according to the first embodiment is expanded by injecting compressed air from an air compressor 2 that is operated by a DC power source from a cigar socket or the like of the vehicle. It is.

  First, the air compressor 2 will be described. As shown in FIG. 1A, the air compressor 2 includes a compressor body 21 that operates by electricity and discharges compressed air, a battery (not shown) of the vehicle 3, and the like. In order to take the drive power supply current of the compressor body 21, the cigarette lighter outlet 22 inserted into a cigarette lighter socket (not shown) of the vehicle 3 and the air jack device 1A of the first embodiment are compressed from the compressor body 21. And a compressed air hose 23 for sending air.

  On the other hand, as shown in FIGS. 1A to 1C, the air jack device 1A according to the first embodiment is placed on the ground when the jack is up and the vehicle receiving portion 11 that hits a jack point of the vehicle or the like. It has a base part 12 to be applied and an air bag part 13 that is folded and accommodated between the base part 12 and the vehicle receiving part 11.

  Here, the vehicle receiving part 11 is comprised from rubber | gum, a synthetic resin, etc., as shown to Fig.1 (a), (b), the vehicle contact surface part 111 which is the upper surface side, and the outer peripheral side part 112 And a bag contact surface portion 113 with which the uppermost inflatable bag 13a1 in the airbag portion 13 contacts. In the first embodiment, the vehicle contact surface portion 111 of the vehicle receiving portion 11 is opposite to the outer valve portion 122a provided on the side closer to the vehicle than the center of the airbag portion 11, that is, the base portion 12 described later. An insertion groove 111a into which a jack point of the vehicle is inserted is formed on the side.

  The base portion 12 includes a bag contact surface portion 121 with which the lowest inflated bag 13a3 in the airbag portion 13 contacts, an outer peripheral side surface portion 122, and a bottom surface portion 123 that contacts the ground. The distal end of the compressed air hose 23 extending from the compressor main body 21 of the air compressor 2 is connected to the outer peripheral side surface 122 which is the side far from the vehicle 3 during jack-up operation, that is, the opposite side of the fitting groove 111a of the vehicle contact surface 111. An outer valve portion 122a is provided.

  The airbag part 13 has expansion bags 13a1 to 13a3 which are a plurality of expansion bags made of materials such as EVA (ethylene vinyl acetate copolymer) or urethane film connected in the vertical direction, and the air compressor 2 Before being supplied with compressed air from the base portion 12 and the vehicle receiving portion 11 in a deflated state, while being folded and accommodated, when compressed air is supplied, The plurality of inflatable bags 13 a 1 to 13 a 3 connected in the direction are inflated to raise the vehicle receiving portion 11 with respect to the base portion 13. In addition, although the several expansion | swelling bags 13a1-13a3 are shown in figure here for convenience, 4 or more or two may of course be sufficient, and it can also connect 8-10 sheets up-down direction. The plurality of inflatable bags 13a1 to 13a3 are welded to each other and bonded together. In addition, the storage chamber formed between the base portion 12 and the vehicle receiving portion 11 is a state in which the airbag portion 13 of the first embodiment is contracted and stored in the trunk room or before compressed air is supplied. In this state, as shown in FIG. 3A described later, the upper end portion of the outer peripheral side surface portion 122 of the base portion 12 and the lower end portion of the outer peripheral side surface portion 112 of the vehicle receiving portion 11 are opposed to each other. In this storage state, the bag contact surface portion 121 and the outer peripheral side surface 122 inner surface of the base portion 12, and the bag contact surface portion 113 and the outer peripheral side surface of the vehicle receiving portion 11 are stored. It is a space formed by the inner surface of the portion 112.

  And the airbag part 13 of this Embodiment 1 is provided in the outer side of the some expansion | swelling bag 13a1-13a3 connected to the up-down direction, as shown in FIG.1 (c) and FIG. It has the outer bag part 13b which protects 13a1-13a3. For this reason, in the airbag part 13 of this Embodiment 1, since the outer bag part 13b is provided on the outer side of the plurality of inflation bags 13a1 to 13a3, the plurality of inflation bags 13a1 to 13a3 are damaged due to scratches or the like. Can be prevented.

  Moreover, in the airbag part 13 of this Embodiment 1, as shown in FIG. 2, the inner valve part connected with the front-end | tip of the outer valve part 122a between the some expansion bag 13a1-13a3 and the outer bag part 13b. 122b is provided. The inner valve portion 122b is provided with three pressurized air outlets 122b1 to 122b3 for inflating the three inflation bags 13a1 to 13a3, and each of the three inflation bags 13a1 to 13a3 is provided at each of the pressurized air outlets 122b1 to 122b3. Compressed air hoses 13c1 to 13c3 for compressing compressed air are attached. For this reason, in the airbag part 13 of this Embodiment 1, since the compressed air hoses 13c1 to 13c3 are provided between the plurality of inflation bags 13a1 to 13a3 and the outer bag part 13b, The hose 13c1 to 13c3 can be prevented from being damaged due to scratches and the like, and the compressed air hoses 13c1 to 13c3 are not scattered when the plurality of expansion bags 13a1 to 13a3 are folded.

  FIGS. 3A to 3C are state transition diagrams each showing a simplified state in which the air jack device 1A according to the first embodiment of the present invention changes from the folded state to the expanded state. 3 (a) to 3 (c), FIG. 1 (c), FIG. 4 (c), FIG. 5 (c), FIG. 6 and subsequent drawings, the inner valve portion 122b in the outer bag portion 13b The compressed air hoses 13c1 to 13c3 are not shown.

  As shown in FIG. 3 (a), the air jack device 1 </ b> A of the first embodiment in the folded state is moved to the jack point 31 on the lower surface of the vehicle 3 and formed on the vehicle contact surface portion 111 of the vehicle receiving portion 11. The jack point 31 on the lower surface of the vehicle 3 is fitted into the fitting groove 111a.

  The compressed air hose 23 of the air compressor 2 is connected to the outer valve part 122a of the base part 12 of the air jack device 1A of the first embodiment, while the cigarette lighter outlet 22 of the air compressor 2 is connected to the vehicle 3 Insert it into a cigarette lighter socket (not shown). Then, the compressor body 21 is turned on.

  Then, compressed air is sent from the compressor body 21 to the plurality of expansion bags 13a1 to 13a3 of the air jack device 1A of the first embodiment through the compressed air hose 23, as shown in FIGS. 3 (b) and 3 (c). Moreover, the airbag part 13 is inflated and the vehicle 3 can be lifted.

  At that time, in the air jack device 1A of the first embodiment, the compressed air is not sent simultaneously to the plurality of expansion bags 13a1 to 13a3, but the openings of the three pressure air outlets 122b1 to 122b3 of the inner valve portion 122b are opened. It is preferable to control and inflate the compressed air in order from any one of the three inflatable bags 13a1 to 13a3. In this way, the three inflatable bags 13a1 to 13a3 are inflated one by one in order, so that the air bag part 13 is expanded in a stable state, and the three inflatable bags 13a1 to 13a3 are in a single operation. It is possible to prevent the plurality of inflatable bags 13a1 to 13a3 from falling than when injecting air.

  Accordingly, in the air jack device 1A of the first embodiment, the airbag portion 13 is composed of a plurality of expansion bags 13a1 to 13a3 connected in the vertical direction, so the number of connection of the expansion bags 13a1 to 13a3 is increased. By doing so, there is no limit to the amount of increase, and even if a hole or the like is opened in one inflatable bag, it is possible to prevent all the inflated bags from being deflated.

  Further, in the air jack device 1A according to the first embodiment, the vehicle contact surface portion 111 of the vehicle receiving portion 11 has a fitting groove portion into which the jack point 31 of the vehicle is fitted closer to the vehicle than the center of the airbag portion 11. 111a is formed, and an outer valve portion 122a, an inner valve portion 122b, and further compressed air hoses 13c1 to 13c3 are provided on the opposite side of the insertion groove portion 111a with respect to the centers of the plurality of expansion bags 13a1 to 13a3. Therefore, when the compressed air is first sent to the compressed air hoses 13c1 to 13c3 via the outer valve portion 122a and the inner valve portion 122b, the compressed air hoses 13c1 to 13c3 are easily swelled, and the plurality of inflatable bags 13a1 It is easy to send compressed air to ˜13a3, and the jack-up operation becomes easy.

Embodiment 2. FIG.
Next, the air jack apparatus 1B of Embodiment 2 will be described.

  4 (a) to 4 (c) are a rear view of the vehicle receiving portion 11 and a plan view and a cross-sectional view of the base portion 12 constituting the air jack device 1B according to the second embodiment of the present invention. In addition, the airbag part 13 is comprised similarly to the air jack apparatus 1 of the said Embodiment 1. FIG.

  In the air jack device 1B according to the second embodiment of the present invention, the vehicle receiving portion 11 ′ is configured in the same manner as the air jack device 1 according to the first embodiment in the vehicle contact surface portion 111 that hits the vehicle 3 or the like. However, as shown in FIGS. 4A and 4C, the airbag contact surface portion 113 ′ against which the upper surface of the airbag portion 13 hits is a spherical surface that is recessed into a hemispherical shape, such as a lens surface. It is a concave shape. Here, in the second embodiment, the apex 113a ′, which is the center of the spherical concave portion formed on the airbag contact surface portion 113 ′ of the vehicle receiving portion 11 ′, is made to coincide with the center of the vehicle contact surface portion 111. Yes.

  Therefore, in the air jack device 1B according to the second embodiment of the present invention, the airbag portion 13 is housed in the airbag contact surface portion 113 ′ having a spherical recess shape recessed in a hemispherical shape in the folded state. In the inflated state, since the upper surface of the inflated airbag portion 13 hits the airbag contact surface portion 113 ′ having a spherical concave shape that is recessed in a hemispherical shape, the weight of the vehicle 3 is equally applied to all the inflated airbag portions 13. The vehicle 3 can be jacked up stably.

  Further, in the air jack device 1B according to the second embodiment, the vertex 113a ′ serving as the center of the spherical concave portion formed on the airbag contact surface portion 113 ′ of the vehicle receiving portion 11 ′ is the center of the vehicle contact surface portion 111. Therefore, the vehicle 3 can be evenly weighted at the center of the inflated airbag portion 13 to stably jack up the vehicle 3 and formed on the vehicle contact surface portion 111 side. Since the fitting groove 111a is formed at a position deviated from the center of the vehicle contact surface 111, the airbag contact surface 113 'is formed in a spherical concave shape recessed in a hemispherical shape, and the center is thin. Even if it becomes, it becomes possible to provide in the position shifted | deviated from the thin-walled center, and no problem arises in formation of the insertion groove part 111a.

  Further, in the air jack device 1B according to the second embodiment of the present invention, the base portion 12 ′ is configured in the same manner as the air jack device 1 according to the first embodiment, while the bottom surface portion 123 placed on the ground is configured. As shown in FIGS. 4 (b) and 4 (c), the airbag contact surface portion 121 ′ against which the lower surface of the airbag portion 13 hits is similar to the cross-sectional shape of the airbag contact surface portion 113 ′ of the vehicle receiving portion 11 ′. Furthermore, it is a spherical concave shape that is recessed in a hemispherical shape. Here, in the second embodiment, the vertex 121 a ′ that is the center of the spherical concave portion formed on the airbag contact surface portion 121 ′ of the base portion 12 ′ coincides with the center of the bottom surface portion 123.

  Therefore, in the air jack device 1B according to the second embodiment of the present invention, in the folded state, the airbag part 13 is accommodated in the airbag contact surface part 121 ′ having a spherical concave shape that is recessed in a hemispherical shape, In the inflated state, since the lower surface of the inflated airbag portion 13 hits the airbag contact surface portion 121 'having a spherical concave shape that is recessed in a hemispherical shape, the weight of the vehicle 3 is equally applied to all the inflated airbag portions 13. The vehicle 3 can be jacked up stably.

  Further, in the air jack device 1B according to the second embodiment, the vertex 123a ′, which is the center of the spherical recessed portion formed on the airbag contact surface portion 121 ′ of the base portion 12 ′, is made to coincide with the center of the bottom surface portion 123. Therefore, the vehicle 3 can be jacked up stably by applying the weight of the vehicle 3 evenly to the center of the inflated airbag portion 13.

  In the air jack device 1B of the second embodiment, both the airbag contact surface portion 113 ′ of the vehicle receiving portion 11 ′ and the airbag contact surface portion 121 ′ of the base portion 12 ′ are recessed in a hemispherical shape. In the present invention, the spherical concave shape has been described. However, the present invention is not limited to this, and either the airbag contact surface portion 113 ′ of the vehicle receiving portion 11 ′ or the airbag contact surface portion 121 ′ of the base portion 12 ′. Of course, it may be formed in a spherical concave shape that is recessed in a hemispherical shape.

Embodiment 3 FIG.
Next, an air jack device 1C according to Embodiment 3 will be described.

  5 (a) to 5 (c) are cross-sectional views of a vehicle receiving portion 11C and a base portion 12 ″ constituting an air jack device 1C according to a third embodiment of the present invention, and an air jack according to the third embodiment. It is sectional drawing of the apparatus 1C In addition, the airbag part 13 is comprised similarly to the air jack apparatus 1 grade | etc., Of the said Embodiment 1. FIG.

  In the air jack device 1B according to the second embodiment shown in FIG. 4, the apex 113a ′ that is the center of the spherical concave portion that is recessed in the hemispherical shape of the air bag contact surface portion 113 ′ of the vehicle receiving portion 11 ′ is disposed on the air bag. The air jack device 1C according to the third embodiment is aligned with the center of the contact surface portion 113 ′, but as shown in FIGS. 5A and 5C, the air bag contact surface portion 113 ″ of the vehicle receiving portion 11C. That the apex 113a ", which is the center of the spherical concave shape recessed in the hemispherical shape, is shifted from the center of the airbag portion 13 to coincide with the fitting groove portion 111a formed on the vehicle contact surface portion 111 side. It is a feature.

  Thereby, according to the air jack device 1C of the third embodiment, the vehicle weight of the vehicle 3 is applied to the fitting groove 111a formed on the vehicle contact surface 111 side, and the airbag is inflated to the opposite side to the fitting groove 111a. Since the apex of the part 13 comes, the vehicle 3 can be jacked up stably.

  Further, in the air jack device 1C of the third embodiment, as shown in FIGS. 5 (b) and 5 (c), a spherical concave shape that is recessed into the hemispherical shape of the airbag contact surface portion 121C of the base portion 12 ″. The central apex 121a ″ is also shifted from the center of the airbag portion 13 in the same manner as the apex 113a ′ that is the center of the spherical concave portion recessed in the hemispherical shape of the airbag contact surface portion 113 ′ of the vehicle receiving portion 11 ′. Thus, it is made to coincide with the fitting groove 111a formed on the vehicle contact surface 111 side.

  Thus, according to the air jack device 1C of the third embodiment, the vehicle weight of the vehicle 3 is applied to the fitting groove 111a formed on the vehicle contact surface 111 side of the vehicle receiving portion 11C, and the opposite side to the fitting groove 111a. The apex of the inflated airbag part 13 comes, and the position of the apex 121a "which is the center of the spherical concave part recessed in the hemispherical shape of the airbag contact surface part 121C of the base part 12" and the vehicle receiving part 11C Since the position of the vertex 113a ″ that is the center of the spherical concave portion that is recessed in the hemispherical shape of the airbag contact surface portion 113 ″ coincides with each other, each vertex 113a ″, 121a in the vehicle receiving portion 11 ″ and the base portion 12 ″. Therefore, the position where the weight of the vehicle 3 is applied coincides with the position of "", and the vehicle 3 can be jacked up more stably than in the second embodiment.

  In the air jack device 1C according to the second embodiment, both the airbag contact surface portion 113 ″ of the vehicle receiving portion 11C and the airbag contact surface portion 121C of the base portion 12 ″ are recessed in a semispherical shape. However, the present invention is not limited to this, and only one of the airbag contact surface portion 113 ″ of the vehicle receiving portion 11C and the airbag contact surface portion 121C of the base portion 12 ″ is formed into a hemisphere. Of course, it may be formed in the shape of a spherical recess recessed in a surface shape.

  Further, in the air jack device 1C of the third embodiment, the spherical concave shape that is recessed into the hemispherical shape of both the airbag contact surface portion 113 ″ of the vehicle receiving portion 11C and the airbag contact surface portion 121C of the base portion 12 ″. The apexes 113a "and 121a" which are the centers of the vehicle are described so as to coincide with the positions of the fitting groove portions 111a formed on the vehicle contact surface portion 111 side of the vehicle receiving portion 11C. However, the present invention is not limited to this, and the vehicle Only one of the vertices 113a ″ and 121a ″ that are the center of the spherical concave shape that is recessed into the hemispherical shape of the airbag contact surface portion 113 ″ of the receiving portion 11C or the airbag contact surface portion 121C of the base portion 12 ″, Of course, it may be made to correspond to the fitting groove 111a on the vehicle contact surface portion 111 side of the vehicle receiving portion 11C.

Embodiment 4 FIG.
Next, an air jack device 1D according to Embodiment 4 will be described. In addition, although applied and demonstrated to the air jack apparatus 1 of the said Embodiment 1 here, it can apply similarly to the air jack apparatuses 1B and 1C of Embodiment 2,3.

  FIG. 6 is a schematic cross-sectional view showing the structure of the air jack device 1D (during expansion) according to the fourth embodiment of the present invention.

  In the air jack device 1D of the third embodiment, as shown in FIG. 6, the plurality of expansion bags 13a1 to 13a3 are prevented from falling during the expansion between the plurality of expansion bags 13a1 to 13a3 constituting the airbag portion 13. For this purpose, doughnut-shaped (floating ring) inflatable bags 13c1 and 13c2 are interposed. This is because, when inflated, the plurality of inflatable bags 13a1 to 13a3 are inflated more in the center portion than in the peripheral portion, and therefore, the gap between the peripheral portions of the plurality of inflatable bags 13a1 to 13a3 is filled to maintain a sense of stability. is there.

  Here, in the air jack device 1D according to the third embodiment, as shown in FIG. 6, the doughnut-shaped (floating ring) inflatable bags 13c1 and 13c2 from the maximum outer diameter of the plurality of inflatable bags 13a1 to 13a3 when inflated. Since the maximum outer diameter is slightly larger, the stability of the airbag portion 13 at the time of inflation is improved, and it is difficult to collapse. Note that it is optional to slightly increase the maximum outer diameter of the doughnut-shaped (floating ring) expansion bags 13c1 and 13c2 from the maximum outer diameter of the plurality of expansion bags 13a1 to 13a3.

  Therefore, according to the air jack device 1D of the fourth embodiment, even when the plurality of inflating bags 13a1 to 13a3 are inflated, the stability of the air bag portion 13 is improved by the donut-shaped (floating ring) inflating bags 13c1 and 13c2. Since it improves and it becomes difficult to fall down, it becomes possible to jack up the vehicle 3 more stably.

  In addition, as shown in FIG. 6, between the plurality of inflatable bags 13a1 to 13a3 may be in close contact or welded at the center portion, and further, as shown in FIG. Of course, it is possible to avoid welding.

Embodiment 5 FIG.
Next, an air jack device 1E according to Embodiment 5 will be described. In addition, although applied and demonstrated to the air jack apparatus 1 of the said Embodiment 1 here, it can apply similarly to the air jack apparatuses 1B and 1C of Embodiment 2,3.

  FIG. 8 is a schematic cross-sectional view showing the structure of the air jack device 1E (during expansion) according to Embodiment 5 of the present invention.

  In the air jack device 1E of the fifth embodiment, as shown in FIG. 8, the plurality of inflatable bags 13a1 to 13a3 are welded while the vehicle receiving portion 11 and the base portion 12 are connected. A plurality of inflatable bags 13a1 to 13a3 are surrounded by a plurality of positions, or a plurality of positions at predetermined surrounding angles, for example, four positions every 90 degrees or three positions every 120 degrees, respectively. In order to prevent the expansion bags 13a1 to 13a3 from collapsing during expansion, when the plurality of expansion bags 13a1 to 13a3 are not expanded (during storage), the expansion bags 13a1 to 13a3 are not expanded and the plurality of expansion bags 13a1 to 13a3 are expanded. In this case (when jacking up), an elastic member 14 made of rubber or the like is provided to provide a tensile force to the plurality of inflatable bags 13a1 to 13a3.

  Therefore, when the plurality of inflatable bags 13a1 to 13a3 are inflated (when jacking up), in the air jack device 1E of the fifth embodiment, the surroundings of the plurality of inflatable bags 13a1 to 13a3 are all enclosed, or a predetermined angle around Since a tensile force works equally every time, the stability of the air bag portion 13 is improved and it is difficult to fall down.

  Therefore, according to the air jack device 1E of the fifth embodiment, even when the plurality of inflating bags 13a1 to 13a3 are inflated, the stability at the time of inflating the air bag portion 13 is improved, and the air bag device 13 is less likely to fall down. Thus, the vehicle 3 can be jacked up.

Embodiment 6 FIG.
Next, an air jack device 1F according to Embodiment 6 will be described. In addition, although applied and demonstrated to the air jack apparatus 1 of the said Embodiment 1 here, it can apply similarly to the air jack apparatuses 1B and 1C of Embodiment 2,3. In the description of the sixth and subsequent embodiments, the vehicle receiving portion 11, the base portion 13, and the like are not characteristic portions, and thus are simplified.

  FIG. 9 is a schematic sectional view showing the structure of the air jack device 1F (during expansion) according to the sixth embodiment of the present invention.

  In the air jack device 1F of the sixth embodiment, as shown in FIG. 9, a plurality of (here, four, for example) inflatable bags 13 a 1 to 13 a 4 between the vehicle receiving portion 11 and the base portion 12. Collapses when inflating a plurality of inflatable bags 13a1 to 13a4 so as to surround the entire circumference or at a plurality of positions at a predetermined angle around the periphery, for example, at four places every 90 degrees or six places every 60 degrees In order to prevent this, a plurality of metallic folding nets 15c are expanded or contracted by folding (stretching) or extending (stretching) the folded portions by a plurality of link mechanism connecting portions 15a, 15b, etc. in FIG. A feature is that a metal folding elastic member 15 is provided.

  And in the air jack apparatus 1F of Embodiment 6, as shown in FIG. 9, among the plurality of link mechanism connecting portions 15a and 15b of the folding elastic member 15, the inner link mechanism connecting portion 15b The link mechanism connection portion 15b is connected to the metal connection network 15d. Therefore, when the folding elastic members 15 are provided at four positions every 90 degrees, the two connecting nets 15d intersect each other, whereas when the folding elastic members 15 are provided at six positions every 60 degrees. Three connecting networks 15d intersect.

  Therefore, when the plurality of inflation bags 13a1 to 13a4 are inflated (when jacking up), the air jack apparatus 1F of the sixth embodiment surrounds all of the circumferences of the plurality of inflation bags 13a1 to 13a4 or has a predetermined angle around the circumference. Each is provided with a plurality of metallic folding nets 15c connected by a plurality of link mechanism connecting parts 15a, 15b, etc., and the inner link mechanism connecting parts 15b are connected by a metal connecting net 15d etc. As a result, the stability of the airbag 13 is improved and it is difficult for the airbag unit 13 to collapse.

  Therefore, according to the air jack device 1F of the sixth embodiment, like the air jack device 1F of the fifth embodiment, the stability at the time of inflation of the air bag portion 13 is improved, and the air jack device 13 is less likely to fall down and is more stable. Thus, the vehicle 3 can be jacked up.

Embodiment 7 FIG.
Next, an air jack device 1G according to Embodiment 7 will be described. In addition, although applied and demonstrated to the air jack apparatus 1 of the said Embodiment 1 here, it can apply similarly to the air jack apparatuses 1B and 1C of Embodiment 2,3.

  FIG. 10 is a front view showing a structure of an air jack device 1G (during expansion) according to the seventh embodiment of the present invention.

  In the air jack device 1G of the seventh embodiment, as shown in FIG. 10, a plurality of (here, four, for example) inflation bags 13 a 1 to 13 a 4 constituting the airbag portion 3 are welded. In order to prevent the plurality of expansion bags 13a1 to 13a4 from falling over at a plurality of positions that surround all of the periphery of the plurality of expansion bags 13a1 to 13a4 between the vehicle receiving portion 11 and the base 12 portion, respectively. When the plurality of inflatable bags 13a1 to 13a4 are not inflated, they are not expanded, and when the plurality of inflatable bags 13a1 to 13a4 are inflated, they are stretched to give tensile forces to the plurality of inflatable bags 13a1 to 13a4. (Here, for example, it is assumed that there are three stages.) Between the elastic member 16a and the plurality of elastic members 16a, a metallic or plastic material having a central diameter surrounding the periphery of the plurality of expansion bags 13a1 to 13a4. A hard ring member 16b is provided.

  Therefore, similarly to the air jack device 1D of the fifth embodiment shown in FIG. 8, when the plurality of expansion bags 13a1 to 13a4 are inflated (when jacking up), the air jack device 1G of the seventh embodiment has a plurality of expansion bags. Since the tensile force acts uniformly so as to surround all of the periphery of 13a1 to 13a4 or for every predetermined angle of the periphery, the stability of the air bag portion 13 is improved and it is difficult to collapse.

  In particular, in the air jack device 1G according to the seventh embodiment, as shown in FIG. 10, the elastic members 16a of each step are provided at different positions in the horizontal direction from the elastic members 16a of the other adjacent upper and lower steps. Therefore, at this point, when the plurality of inflatable bags 13a1 to 13a4 are inflated (when jacking up), the stability of the air bag portion 13 is improved, and it is difficult to collapse.

  Therefore, according to the air jack device 1G of the seventh embodiment, even if the plurality of inflating bags 13a1 to 13a4 are inflated, similarly to the air jack device 1D of the fifth embodiment shown in FIG. Stability at the time of expansion is improved, it is difficult to fall down, and the vehicle 3 can be jacked up more stably.

Embodiment 8 FIG.
Next, an air jack device 1H according to the eighth embodiment will be described. In addition, although applied and demonstrated to the air jack apparatus 1 of the said Embodiment 1 here, it can apply similarly to the air jack apparatuses 1B and 1C of Embodiment 2,3.

  FIG. 11: is a schematic sectional drawing which shows the structure of the air jack apparatus 1H (at the time of expansion | swelling) of Embodiment 8 which concerns on this invention.

  In the air jack device 1H of the eighth embodiment, as shown in FIG. 11, a plurality of (here, four, for example) inflation bags 13a1 to 13a4 constituting the airbag portion 3 are welded. A spring member 17 is provided between the vehicle receiving portion 11 and the base portion 12 so as to surround the peripheries of the plurality of inflatable bags 13a1 to 13a4. .

  Here, the spring member 17 counteracts its own elastic force when the plurality of expansion bags 13a1 to 13a4 are not inflated (during storage) in order to prevent the plurality of expansion bags 13a1 to 13a4 from collapsing during expansion. And put it in a contracted state. Therefore, in a state where the vehicle receiving portion 11 and the base portion 12 are closed while being held by a hand or the like, the vehicle receiving portion 11 and the base portion 12 are temporarily fastened by being tied by a string or hook (not shown).

  When jacking up, when unillustrated strings, hooks, and the like are unwound, the spring member 17 is, for example, a jack of the vehicle 3 to some extent due to its own elastic force even in a state where the air is not put into the plurality of expansion bags 13a1 to 13a4. The vehicle receiving part 11 is raised to the height of the point 31. Therefore, the mounting property to the vehicle 3 is improved.

  Therefore, according to the air jack device 1H of the eighth embodiment, the spring member 17 improves the mountability to the vehicle 3, and the spring member 17 is provided so as to surround all of the plurality of expansion bags 13a1 to 13a4. Therefore, even when the airbag portion 13 is inflated, the stability of the air jack device 1H is improved, it is difficult to fall down, and the vehicle 3 can be jacked up more stably.

1A to 1H Air jack device 11, 11 ', 11C Vehicle receiving portion 113, 113', 113 "Airbag contact surface portion 113a ', 113a" Vertex 12, 12', 12 "Base portion 121, 121 ', 121C Airbag Contact surface portion 121a ', 121a "vertex 122a outer valve portion 122b inner valve portion 13 airbag portion 13a1 to 13a4 expansion bag 13c1 to 13c3 compressed air hose 13b outer back portion 13c1, 13c2 donut-shaped expansion bag 14 elastic member 15 folding Telescopic members 15a, 15b Link mechanism connecting portion 15c Folding net 15d Connecting net 16a Elastic member 16b Ring member 17 Spring member 2 Air compressor 21 Compressor body 22 Cigarette lighter outlet 23 Compressed air hose 3 Vehicle

Claims (13)

When jacking up, the vehicle receiving part where the vehicle hits,
When jacking up, the base part placed on the ground,
It consists of a plurality of inflatable bags sandwiched between the base part and the vehicle receiving part and connected in the vertical direction, and is folded in a deflated state before compressed air is supplied, while compressed air is supplied A plurality of inflatable bags connected in the vertical direction are inflated to raise the vehicle receiving portion relative to the base portion; and
An air jack device characterized by comprising: In the air jack apparatus of Claim 1,
The airbag portion further includes
Provided on the outside of the plurality of inflatable bags connected in the vertical direction and having an outer bag portion for protecting the plurality of inflatable bags;
An air jack device characterized by that. In the air jack apparatus of Claim 2,
On the outside of the outer bag part,
While the outer valve part to which the hose for compressed air from the air compressor is connected is attached,
On the inside of the outer bag part,
An inner valve portion having a plurality of branched compressed air discharge ports connected to the outer valve portion between the outer bag portion and the plurality of expansion bags, and a plurality of compressed air discharge ports of the inner valve portion. A plurality of compressed air hoses that are connected to each other and pressure-feed compressed air to each of the plurality of inflation bags;
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 3,
The base portion is
A bottom surface placed on the ground;
An airbag contact surface portion with which the lowermost inflation bag in the airbag portion contacts,
The airbag contact surface portion of the base portion is
It is a spherical concave shape recessed in a hemispherical shape,
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 4,
The vehicle receiver is
A vehicle contact surface portion on which the vehicle hits;
An airbag contact surface portion with which the uppermost inflation bag in the airbag portion contacts,
The airbag contact surface portion of the vehicle receiving portion is
It is a spherical concave shape recessed in a hemispherical shape,
An air jack device characterized by that. In the air jack device according to claim 4 or 5,
On the vehicle contact surface portion of the vehicle receiving portion, a fitting groove portion into which a jack point of the vehicle is fitted is formed on the side closer to the vehicle than the center of the airbag portion,
The apex of the spherical recess shape of the airbag contact surface portion of the base portion and the airbag contact portion of the vehicle receiving portion is:
It is shifted from the formation position of the fitting groove portion in the vehicle contact surface portion of the vehicle receiving portion,
An air jack device characterized by that. In the air jack device according to claim 4 or 5,
On the vehicle contact surface portion of the vehicle receiving portion, a fitting groove portion into which a jack point of the vehicle is fitted is formed on the side closer to the vehicle than the center of the airbag portion,
The apex of the spherical recess shape of the airbag contact surface portion of the base portion and the airbag contact portion of the vehicle receiving portion is:
It coincides with the formation position of the fitting groove in the vehicle contact surface portion of the vehicle receiving portion,
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 7,
On the vehicle contact surface portion of the vehicle receiving portion, a fitting groove portion into which a jack point of the vehicle is fitted is formed on the side closer to the vehicle than the center of the airbag portion,
An outer valve portion to which a hose for compressed air from an air compressor is connected is provided on the side surface side of the base portion and on the side surface farther from the vehicle than the center of the airbag portion.
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 8,
Interposing a donut-shaped inflatable bag between the plurality of inflatable bags constituting the airbag portion to prevent the plurality of inflatable bags from falling over when inflated;
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 8,
While the plurality of expansion bags constituting the airbag portion are welded,
In order to prevent the plurality of inflation bags from collapsing at the plurality of positions between the vehicle receiving portion and the base portion all around the circumference of the plurality of inflation bags, the plurality of inflation bags Provided with an elastic member that does not expand when the plurality of inflatable bags are inflated and expands when the plurality of inflatable bags are inflated to give a tensile force to the plurality of inflatable bags;
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 8,
A plurality of link mechanism connecting portions for preventing the plurality of inflatable bags from collapsing at a plurality of positions surrounding all of the periphery of the plurality of inflatable bags between the vehicle receiving portion and the base portion. It is a metal folding elastic member that can be folded and stretched through
Of the plurality of link mechanism connecting portions of the folding elastic member, the inner link mechanism connecting portion is connected to the opposing inner link mechanism connecting portion by a metallic member.
An air jack device characterized by that. In the air jack device according to any one of claims 1 to 8,
While the plurality of expansion bags constituting the airbag portion are welded,
In order to prevent the plurality of inflation bags from collapsing at the plurality of positions between the vehicle receiving portion and the base portion all around the circumference of the plurality of inflation bags, the plurality of inflation bags A plurality of stages of elastic members that do not expand when they are not inflated and that stretch when the plurality of inflatable bags are inflated to provide a tensile force to the plurality of inflatable bags;
A ring member having a central diameter surrounding the periphery of the plurality of inflation bags between the stages of the plurality of stages of elastic members;
An air jack device characterized by comprising: In the air jack device according to any one of claims 1 to 8,
While the plurality of expansion bags constituting the airbag portion are welded,
A center diameter that surrounds the periphery of the plurality of inflation bags, and is provided between the vehicle receiving portion and the base portion so as to surround the periphery of the plurality of inflation bags;
In order to prevent the plurality of inflation bags from collapsing during inflation, when the plurality of inflation bags are not inflated, they are contracted against their own elastic force, and when the plurality of inflation bags are inflated Having a spring member that is stretched by its own elastic force,
An air jack device characterized by that.

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