JP2014042894A - Hydrogen injector, and hydrogen injection system equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beverage rich in hydrogen safely and at a low cost.SOLUTION: A hydrogen injector 1 for inserting a needle 23 into an object 60 to be packed with hydrogen and injecting hydrogen into the object through the needle 23, includes a tube 6 connected with an outside hydrogen supply source 81, the hollow needle 23 connected with the tube, a pressing part 2 for pressing out the hollow needle, an elastic member 46 for energizing the pressing part toward a first position from a second position, and a contact member 5 that contacts the object and has an open hole 50 through which the hollow needle can move back and forth. The pressing part is pressed to move the hollow needle from the first position to the second position against elastic force of the elastic member and take out the hollow needle from the open hole of the contact member to project the hollow needle to a position for getting in the object. A hydrogen injection system 70 includes at least the hydrogen injector and a hydrogen supply apparatus 80.

Description

  The present invention relates to a hydrogen injector and a hydrogen injection system including the same.

  Conventionally, it is known that active oxygen is one of the causes of aging of humans and other animals or various diseases. While neither humans nor animals can maintain their lives without oxygen, foods and drinks must be taken into the body as oxides as long as they live in the presence of oxygen. Recently, in major industrialized countries including Japan, medical expenses tend to increase year by year due to the aging and the habit of eating or eating out. In order to stop the increase in the burden of medical expenses, major industrialized countries are beginning to focus on preventive medicine, such as improving lifestyle habits before getting sick, instead of treating them after getting sick.

  As a kind of preventive medicine, there is a method of neutralizing active oxygen present in the body, and in particular, a method of taking hydrogen into the body has recently attracted attention. Since ancient times, there have been several known natural areas where water rich in hydrogen naturally springs, including the waters of Trachote that springs in Mexico, Lourdes that springs in Lourdes, France, the waters of Nordenau that springs in Nordenau, Germany, Japan Hita Tenryomizu that springs in Hita City is an example of water rich in hydrogen. In particular, in Mexico's Tracoté and France's Lourdes, there are many reports that the inhabitants in the vicinity have a low incidence of cancer, and that tumors have become smaller when drinking water in the area for a long time.

  As an example of commercialization of such a beverage rich in hydrogen, a beverage in which hydrogen is sealed is known that is sealed in an aluminum pouch. However, since hydrogen is a very small molecule, there is a problem in that hydrogen escapes from the aluminum pouch during the period from the manufacturing factory until the consumer drinks, and the hydrogen concentration decreases. For this reason, even if it is a drink with a high effect immediately after filling with hydrogen in a manufacturing factory, at the stage which a consumer drinks, it is changing into the drink with a low effect no longer. As a means for solving such a problem, a method for producing hydrogen water by putting granular magnesium into water in a container such as a PET bottle and generating hydrogen by reaction of magnesium and water (see Patent Document 1), Or the plastic bottle containing a drinking water which put magnesium and water (refer patent document 2) is proposed.

Japanese Patent Laid-Open No. 2004-04949 JP 2007-001633 A

  However, alkaline earth metals such as magnesium are highly active metals that react violently with water. For this reason, considerable care is required in handling. In addition, since the cost of hydrogen water is increased by using a metal such as magnesium, hydrogen water obtained using magnesium is unsuitable as a beverage for general consumers.

  The present invention has been made to solve such a problem, and an object thereof is to provide a beverage rich in hydrogen that is safe and low in cost.

  One aspect of the present invention for solving the above-described object is a hydrogen injector for inserting a needle into an object into which hydrogen is to be injected and injecting hydrogen into the object through the needle. A tube to be connected; a hollow needle connected to the tube; a pressing portion for pushing out the hollow needle; an elastic member for biasing the pressing portion from the second position toward the first position; An abutting member that abuts on and having a through-hole through which the hollow needle can be taken in and out, and when the pressing portion is pushed in, the hollow needle is placed in the first position against the elastic force of the elastic member. This is a hydrogen injector that is movable from the first position to the second position and projects the hollow needle to a position that is exposed from the through hole of the contact member and enters the inside of the object.

  According to another aspect of the present invention, the contact member further includes a recess recessed inwardly on the side in contact with the object, and the first position is located at the back of the tip of the hollow needle behind the bottom surface of the recess. It is a hydrogen injector as a storage position.

  Another embodiment of the present invention also includes a hollow needle fixed to the pressing portion, and includes a pressing portion, an elastic member, and an abutting member arranged in series in this order. It is a hydrogen injector equipped with an abutting member inserted.

  One embodiment of the present invention is a hydrogen injection system including at least one of the hydrogen injectors described above and a hydrogen supply device connected to the hydrogen injector.

  Another embodiment of the present invention is a hydrogen injection system further including a water electrolysis hydrogen generator in a hydrogen supply device.

  Another aspect of the present invention is a hydrogen injection system that includes a hydrogen storage tank that branches off from a line that connects between the hydrogen supply device and the hydrogen injector.

  In another embodiment of the present invention, a hydrogen storage tank is configured by a syringe, and hydrogen injection is provided with a switch for switching supply or stop of hydrogen supply from the hydrogen supply device to the syringe according to the position of the piston of the syringe. system.

  According to the present invention, a beverage rich in hydrogen can be provided safely and at low cost.

FIG. 1 shows a side view of a preferred embodiment of a hydrogen injector according to the present invention. FIG. 2 shows a longitudinal sectional view of the hydrogen injector shown in FIG. FIG. 3 shows a state (3A) in which the hydrogen injector shown in FIG. 1 is set on an object and is pressed downward, and an enlarged sectional view (3B) of a part A thereof. FIG. 4 shows a schematic diagram of a preferred embodiment of the hydrogen injection system according to the present invention. FIG. 5 shows a schematic diagram of a modified example of the hydrogen storage tank branched and connected from the path between the water electrolysis hydrogen generator and the pump of the hydrogen injection system shown in FIG.

  Next, embodiments of the hydrogen injector and the hydrogen injection system including the same according to the present invention will be described.

<1. Hydrogen injector>

  FIG. 1 shows a side view of a preferred embodiment of a hydrogen injector according to the present invention. FIG. 2 shows a longitudinal sectional view of the hydrogen injector shown in FIG. Hereinafter, the upper part in FIG. 1 is referred to as “upper” and the lower part in FIG. 1 is referred to as “lower”.

  The hydrogen injector 1 according to this embodiment is an instrument for inserting a needle into an object into which hydrogen is to be injected and injecting hydrogen into the object through the needle. The hydrogen injector 1 includes a substantially cylindrical pressing portion 2 having an upper tip as a spherical surface, a ring cover 3 that covers a lower portion of the pressing portion 2, and a sleeve 4 that reciprocally inserts the lower portion of the pressing portion 2; And an abutting member 5 that is fixed to the lower end of the sleeve 4 and abuts against an object to be filled with hydrogen.

  As shown in FIG. 2, the pressing portion 2 includes a hole 10 on the side surface and an internal space 20 that communicates with the hole 10. The pressing unit 2 includes a hole 6 in which a tube 6 connected to an external hydrogen supply source (described later) side is inserted. One end of the tube 6 is connected to another tube 7 continuing from the hydrogen supply source side. Further, the other end of the tube 6 is introduced from the hole 10 into the internal space 20 of the pressing portion 2. The tube 6 is connected to a hollow needle 23 connected to the other end. At least one location including the connection portion between the hollow needle 23 and the tube 6 is preferably fitted into a ring-shaped portion or a concave portion (hereinafter referred to as “ring-shaped portion etc. 22”) formed on the wall of the internal space 20 or the like. To be fixed. For this reason, if the press part 2 presses it below, the function as an operation part which can push out the hollow needle 23 below in conjunction with it will be exhibited. The hollow needle 23 is preferably a pencil point needle having a hole 24 slightly above its pointed tip (hereinafter simply referred to as “tip”). This is because there is a possibility that the hole is clogged while the hollow needle 23 is pierced into the object many times, so that the possibility needs to be reduced. However, as the hollow needle 23, a needle other than the pencil point needle, for example, a general-purpose injection needle may be used.

  The pressing portion 2 includes a flange portion 21 having a diameter larger than the outer diameter of the main portion of the pressing portion 2 positioned above the pressing portion 2 at the lower end thereof. The ring cover 3 includes a through hole 30 penetrating in the vertical direction and a space 32 having a diameter larger than the diameter of the through hole 30. The lower part of the ring cover 3 opens while maintaining the diameter of the space 32. The diameter of the through hole 30 is larger than the outer diameter of the main part above the flange part 21 of the pressing part 2 and smaller than the outer diameter of the flange part 21. Further, the diameter of the space 32 is formed larger than the outer diameter of the flange portion 21. As a result, the pressing portion 2 is movable up and down through the through hole 30 of the ring cover 3, and the flange portion 21 serves as a stopper that prevents the pressing portion 2 from coming out of the through hole 30 of the ring cover 3. It is functioning. The ring cover 3 includes a screw groove 31 formed on the inner wall in contact with the space 32 from the lower opening side. The thread groove 31 is formed so as to be detachably joined to a sleeve 4 described later.

  The sleeve 4 is a cylindrical body having an outer diameter that is smaller than the diameter of the space 32 of the ring cover 3, and includes a through hole 40 that penetrates the sleeve 4 in the vertical direction. The through hole 40 is formed to have a larger diameter than the outer diameter of the flange portion 21 of the pressing portion 2. Further, the sleeve 4 includes a screw groove 41 in a form that fits with the screw groove 31 of the ring cover 3 on the outer wall on the upper side thereof. The ring cover 3 can be separated from the sleeve 4 even when the sleeve 4 is fixed to the abutment member 5 described later in an inseparable manner. For this reason, it is also easy to remove the pressing part 2, further remove the tube 6 and the hollow needle 23 from the removed pressing part 2, and replace them.

  The sleeve 4 includes a cylindrical member 45 having an outer diameter smaller than the diameter of the through hole 40 and a spring 46 as an example of an elastic member disposed below the cylindrical member 45 in the through hole 40. The outer diameter of the spring 46 is smaller than the diameter of the through hole 40. In this embodiment, the spring 46 is one elastic member having an outer diameter substantially the same as the outer diameter of the columnar member 45. However, a plurality of other springs having an outer diameter considerably smaller than the outer diameter of the cylindrical member 45 may be arranged. The elastic member may be other than the spring 46, for example, a rubber-like elastic body having excellent flexibility.

  The cylindrical member 45 preferably fixes the hollow needle 23 by penetrating substantially the center of the bottom surface in the vertical direction. The hollow needle 23 is fixed to the cylindrical member 45 with such a strength that it can withstand a normal pressure when the hollow needle 23 is inserted into an object into which hydrogen is to be inserted. Otherwise, when the hollow needle 23 is inserted into the object, it is retracted upward. However, the hollow needle 23 does not necessarily have to be fixed to the cylindrical member 45. For example, the hollow needle 23 may be firmly fixed to the ring-shaped portion 22 or the like 22 of the pressing portion 2 so as to be movable up and down so that the hollow needle 23 does not contact the through hole of the columnar member 45. In this embodiment, the cylindrical member 45 is separate from the pressing portion 2, but is fixed to the flange portion 21 of the pressing portion 2 or integrated with the flange portion 21 to form the lower end portion of the pressing portion 2. You may do it. In such a case, the hollow needle 23 is fixed to the pressing portion 2 with a strength that can withstand a normal pressure when the hollow needle 23 is inserted into an object into which hydrogen is to be inserted.

  The spring 46 arranges the hollow needle 23 in the ring and biases the pressing portion 2 from the second position to the first position. Here, the “first position” refers to a position where the tip of the hollow needle 23 is at the uppermost position in a non-operating state where the pressing portion 2 is not pressed. The “second position” refers to a position where the tip is at the lowest position when the pressing portion 2 is pressed to push the hollow needle 23 downward.

  The sleeve 4 includes a contact member 5 at its lower end. Therefore, the hydrogen injector 1 includes the pressing portion 2, the spring 46, and the contact member 5 arranged in series in this order. The abutting member 5 is a member that abuts against an object to be filled with hydrogen, and includes a through-hole 50 through which the hollow needle 23 can be taken in and out. The through hole 50 has a diameter larger than the outer diameter of the hollow needle 23 and is formed in a size that does not hinder the vertical movement of the hollow needle 23. Thus, the hollow needle 23 is provided by inserting the spring 46 and the contact member 5 from the pressing portion 2. Further, the contact member 5 has a shape similar to that of the ring cover 3, and has a recess 51 that is considerably larger in diameter than the through-hole 50 and recessed inward on the side in contact with the object to be filled with hydrogen. Is provided at the lower end of the contact member 5. The recess 51 is preferably configured in a form that can be set by inserting a mouth of an object into which hydrogen is to be placed. The distal end of the hollow needle 23 is preferably in a position where it is housed (upward) behind the bottom surface of the recess 51 (that is, the lowermost surface of the through hole 50) at the uppermost first position. This is to prevent the operator from touching the tip of the hollow needle 23 as much as possible in a state where the pressing portion 2 is not pressed. However, this configuration is not an essential configuration. For example, when the opening surface of the recess 51 has a very small diameter and it is difficult for the operator to touch the finger or the like, the tip of the hollow needle 23 is at the uppermost first position. As long as it is above the opening surface, it may protrude below the bottom surface of the recess 51.

  As long as the contact member 5 can contact the object, the contact member 5 does not necessarily have the concave portion 51 that opens downward, and the lower shape may be a flat shape or a protruding shape. Further, the abutting member 5 may be fixed to the sleeve 4 by any method that is not separable or separable. When the contact member 5 is separably fixed to the sleeve 4, for example, an annular recess having a thread groove is formed on the upper surface of the contact member 5, and a thread groove is formed on the outer wall below the sleeve 4. The thread groove may be rotated and fixed in accordance with the thread groove of the annular recess of the contact member 5.

  When hydrogen is injected into an object using the hydrogen injector 1 having the above-described configuration, the concave portion 51 of the abutting member 5 is set in the mouth of the object, and the pressing portion 2 is directed toward the object. Push down against the elastic force of. As a result, the hollow needle 23 moves downward as the pressing portion 2 is pushed in, and moves from the original position (first position) to the second position. By this operation, the tip of the hollow needle 23 is exposed from the through hole 50 of the contact member 5 and protrudes to a position where it enters the inside of the object.

  The pressing portion 2, the ring cover 3, the sleeve 4, the cylindrical member 45, and the contact member 5 may be formed of any material, and preferably made of resin or metal. The spring 46 and the hollow needle 23 are not limited in their constituent materials, but are preferably made of metal. The pressing portion 2, the ring cover 3, the sleeve 4, the cylindrical member 45, and the contact member 5 are all circular in a plan view, but may have a shape other than a circle, for example, a polygon or an ellipse. good. Moreover, although the upper front-end | tip part of the press part 2 is made into the spherical shape in order to make it easy to fit an operator's palm in the case of pressing operation, it is not necessarily limited to it, A planar shape may be sufficient.

  FIG. 3 shows a state (3A) in which the hydrogen injector shown in FIG. 1 is set on an object and is pressed downward, and an enlarged sectional view (3B) of a part A thereof.

  In FIG. 3, a plastic bottle 60 containing drinking water (an example of a beverage) will be described as an example of an object into which hydrogen is put. The PET bottle 60 includes a cap 61 detachably attached to the neck 62 above the PET bottle 60. Further, the cap 61 has a through hole 63 penetrating in the vertical direction at the approximate center of the upper surface thereof. The diameter of the through hole 63 is formed to be considerably larger than the outer diameter of the hollow needle 23. A seal 64 that closes the through hole 63 is affixed on the through hole 63. When the pressing portion 2 is pushed in the direction of arrow F (downward) from the state in which the concave portion 51 of the contact member 5 of the hydrogen injector 1 is in contact with the cap 61, the hollow needle 23 penetrates the contact member 5. It protrudes from the hole 50, penetrates the seal 64, and is inserted into the PET bottle 60. When drinking water (for example, mineral water) is filled up to the vicinity of the upper end of the neck portion 62 in the PET bottle 60, hydrogen can be supplied into the drinking water through the hollow needle 23. On the other hand, if the drinking water level is lower and there is a space in the neck 62, the hollow needle 23 may not reach the drinking water. In such a case, hydrogen is supplied into the space of the neck portion 62. However, when it is desired to supply hydrogen directly to drinking water, hydrogen is supplied through the hollow needle 23 in a state where the drinking water is moved to the vicinity of the upper end of the neck portion 62 by tilting or inverting the plastic bottle 60. You may do it.

  When the pressing portion 2 is pushed downward, the tip of the hollow needle 23 moves by a distance L from the first position to the second position. This means that the flange portion 21 of the pressing portion 2 also moves from the inner bottom surface of the ring cover 3 by a distance L. Therefore, the length of the sleeve 4 needs to be longer than at least the distance L. Further, the spring 46 is required to be an elastic member that can be contracted at least by the distance L. Further, since the hollow needle 23 needs to protrude downward from the through hole 50 of the contact member 5 as a result of the movement of the distance L, the first position of the hollow needle 23 is above the distance L from the outlet of the through hole 50. It needs to be a position that does not become. In this embodiment, the tube 6 is placed at a sufficiently high position on the side surface of the pressing portion 2 so that the tube 6 does not contact the upper surface of the ring cover 3 when the pressing portion 2 moves downward by a distance L. It is attached. However, the attachment position of the tube 6 is not limited to this. For example, a groove penetrating in the vertical direction is formed on the side surface of the ring cover 3, and the groove is formed in a size that allows the tube 6 to move, so that the tube 6 can be attached to the pressing portion 2. There can be no limit. The PET bottle 60 includes a seal 64 that closes the through hole 63 on the upper surface of the cap 61, but the cap 61 does not necessarily include the through hole 63 and the seal 64. In that case, for example, the hollow needle 23 may penetrate the upper surface plate of the cap 61 in the thickness direction.

<2. Hydrogen injection system>
Next, a preferred embodiment of the hydrogen injection system according to the present invention will be described.

  FIG. 4 shows a schematic diagram of a preferred embodiment of the hydrogen injection system according to the present invention.

  The hydrogen injection system 70 according to this embodiment includes at least the hydrogen injector 1 and a hydrogen supply device 80 connected thereto. The hydrogen supply device 80 preferably includes a water electrolysis hydrogen generator 81. The water electrolysis-type hydrogen generator 81 is an apparatus capable of generating hydrogen and oxygen by electrolyzing water, and may take any form including its size. Furthermore, the hydrogen supply device 80 may include a device other than the water electrolysis hydrogen generator 81, for example, a device including a hydrogen cylinder filled with hydrogen gas at a high pressure, or a hydrogen storage storing hydrogen therein. An apparatus including an alloy may be used. Here, a device including a water electrolysis hydrogen generator 81 will be described as a preferred example as the hydrogen supply device 80.

  In the hydrogen supply device 80, a water electrolysis hydrogen generator 81, a pump 85, and a valve 90 are connected in series, and the valve 90 is connected to the tube 6 on the hydrogen injector 1 side through the tube 7. A T-shaped branch pipe 84 is connected in the middle of a pipe 83 connecting the water electrolysis hydrogen generator 81 and the pump 85. The branch pipe 84 is connected to the hydrogen storage tank 82. The pump 85 is connected to the valve 90 via a pipe 86. The hydrogen storage tank 82 is a tank for storing a predetermined amount of hydrogen so that hydrogen can be supplied quickly when the hydrogen injector 1 is operated. However, the hydrogen storage tank 82 is not an indispensable configuration, and when it is allowed to take a long time to inject hydrogen into the PET bottle 60, or when the required amount of hydrogen is quickly supplied from the water electrolysis hydrogen generator 81 If it can be poured into the bottle 60, it need not be provided. The valve 90 may be any type of valve such as a manual valve, an air valve, or an electromagnetic valve. Further, the hydrogen supply device 80 does not necessarily include the valve 90.

  The hydrogen injection system 70 can be used as follows, for example. The hydrogen injection system 70 according to this embodiment can be arranged in a store displaying a plastic bottle 60 containing drinking water. In this case, the store clerk or the purchaser himself / herself makes the hydrogen injector 1 abut on the cap 61 of the PET bottle 60 according to the purchaser's wishes, Into the plastic bottle 60. The purchaser can inject hydrogen immediately before drinking the drinking water in the plastic bottle 60, so that the drinking water rich in hydrogen can be taken into the body.

  FIG. 5 shows a schematic diagram of a modified example of the hydrogen storage tank branched and connected from the path between the water electrolysis hydrogen generator and the pump of the hydrogen injection system shown in FIG.

  As shown in FIG. 5, a syringe 92, which is an example of a hydrogen storage tank, is connected to a pipe 91 that is branched from the branch pipe 84 in FIG. 4. Check valves 93 and 93 are connected to the pipes 83 and 83 on both sides of the branch pipe 84, respectively. The check valve 93 has a function of preventing hydrogen from flowing from the water electrolysis hydrogen generator 81 in the direction opposite to the direction of the pump 85 (see FIG. 4). The syringe 92 is configured to reciprocate the piston 94 in the vertical direction, and the size of the space 95 changes according to the movement of the piston 94. The piston 94 includes a concave portion 96 that is recessed inward in the radial direction on the side surface. On the other hand, on the side of the piston 94, a switch 97 connected to a control unit (not shown) of the water electrolysis hydrogen generator 81 via a wiring 99 is disposed. The switch 97 includes a sensor member 98 that extends to the side surface of the piston 94. The switch 97 is arranged so that the tip end portion of the sensor member 98 can be fitted into the concave portion 96 of the piston 94. When hydrogen comes out from the space 95 of the syringe 92 in the direction of the pump 85, the piston 94 moves downward. As a result, the recess 96 and the tip of the sensor member 98 are separated. As a result, the switch 97 supplies hydrogen from the water electrolysis hydrogen generator 81 through the wiring 99. When hydrogen enters the space 95 of the syringe 92 from the water electrolysis hydrogen generator 81, the piston 94 moves upward, and the recess 96 and the tip of the sensor member 98 are fitted again. As a result, the switch 97 stops supplying hydrogen from the water electrolysis hydrogen generator 81 through the wiring 99. That is, the switch 97 has a function of switching the supply of hydrogen from the water electrolysis hydrogen generator 81 to the syringe 92 or the stop thereof according to the position of the piston 94 of the syringe 92.

  When the syringe 92 and the switch 97 shown in FIG. 5 are used, when the abutting member 5 of the hydrogen injector 1 is brought into contact with the cap 61 of the PET bottle 60 and hydrogen is injected into the PET bottle 60, the syringe Since the hydrogen in 92 can be consumed, hydrogen can be injected in an extremely short time without driving the water electrolysis hydrogen generator 81 one by one. When the injection of hydrogen is completed, the switch 97 sends a signal to the water electrolysis hydrogen generator 81 to produce hydrogen, and can store a predetermined amount of hydrogen in the syringe 92 again. Similarly to the hydrogen storage tank 82, the syringe 92, the switch 97, and the wiring that are branched and connected from the branch pipe 94 are not indispensable components, and it is possible to allow a long time to inject hydrogen into the PET bottle 60. Alternatively, when the required amount of hydrogen can be quickly injected into the PET bottle 60 from the water electrolysis hydrogen generator 81, it may not be provided.

  In the above example, the switch 97 is a contact type mechanical switch, but may be another detection type such as an optical switch. For example, when a light reflection plate is attached to the side surface of the piston 94, light is emitted from the optical switch toward the side surface of the piston 94, and light reflected at the position of the light reflection plate can be received, water electrolysis A signal for stopping the production of hydrogen is sent to the hydrogen generator 81, and if the light cannot be received, a signal for producing hydrogen is sent to the water electrolysis hydrogen generator 81. good.

  In the above-described embodiment, drink water has been described as an example of a drink, but drinks other than water, for example, tea, coffee, fruit drinks, alcohol-containing drinks, and the like may be used as targets for hydrogen injection. Furthermore, hydrogen may be injected into a container other than the plastic bottle 60, for example, an aluminum pouch or a metal can.

  The present invention can be used to produce a beverage rich in hydrogen.

DESCRIPTION OF SYMBOLS 1 Hydrogen injector 2 Press part 5 Contact member 6 Tube 23 Hollow needle (needle)
46 Spring (elastic member)
50 Through hole 51 Recessed portion 60 PET bottle (object)
70 Hydrogen injection system 80 Hydrogen supply device (hydrogen supply source)
81 Water electrolysis hydrogen generator 82 Hydrogen storage tank 92 Syringe (hydrogen storage tank)
94 Piston 97 Switch

Claims (7)

A hydrogen injector for inserting a needle into an object into which hydrogen is to be injected and injecting hydrogen into the object through the needle,
A tube connected to an external hydrogen source;
A hollow needle connected to the tube;
A pressing portion for extruding the hollow needle;
An elastic member that urges the pressing portion from the second position toward the first position;
An abutting member that abuts on the object, the abutting member having a through-hole through which the hollow needle can be taken in and out;
With
When the pressing part is pushed in, the hollow needle is movable from the first position to the second position against the elastic force of the elastic member,
The hollow needle is a hydrogen injector which is exposed from the through hole of the contact member and protrudes to a position where the hollow needle enters the object. The abutting member includes a concave portion recessed inward on the side in contact with the object,
2. The hydrogen injector according to claim 1, wherein the first position is a position in which a tip of the hollow needle is housed deeper than a bottom surface of the concave portion. The hollow needle is fixed to the pressing portion and provided,
They are arranged in series in the order of the pressing portion, the elastic member, and the contact member,
The hydrogen injector according to claim 1, wherein the hollow needle is provided by inserting the elastic member and the contact member from the pressing portion. The hydrogen injector according to any one of claims 1 to 3,
A hydrogen supply device connected to the hydrogen injector;
A hydrogen injection system comprising at least a hydrogen injection system.   The hydrogen injection system according to claim 4, wherein the hydrogen supply device includes a water electrolysis hydrogen generator.   6. The hydrogen injection system according to claim 4, further comprising a hydrogen storage tank branched from a line connecting between the hydrogen supply device and the hydrogen injector. The hydrogen storage tank is constituted by a syringe,
The hydrogen injection system according to claim 6, further comprising a switch that switches between supply of hydrogen to the syringe from the hydrogen supply device and stop thereof according to the position of the piston of the syringe.

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