Bottle holding mechanism and carbon dioxide injection device

Abstract

The present invention provides a bottle holding mechanism and carbon dioxide injection device that make it easy for the user to understand that the bottle is being held securely. [Solution] The bottle holding mechanism comprises a housing 10, a second annular member 40 rotatably positioned within the housing 10 in first and second rotational directions R1 and R2, having a second opposing surface facing a first opposing surface, an end surface opposite to the second opposing surface, an opening into which the mouth of the bottle is inserted, and a groove extending from the end surface to engage with a projection provided on the mouth, and a holder 20 that holds the housing 10 rotatably in third and fourth rotational directions R3 and R4, the groove including a vertical groove portion 441 extending from the end surface of the second annular member 40 in the axial direction of the second annular member 40, and a horizontal groove portion 442 extending from the vertical groove portion 441 in the first rotational direction R1. After the projection engages with the vertical groove portion 441, the bottle 1 is rotated in the first rotational direction R1 and then in the third rotational direction R3, thereby locking the mouth.

Description

Technical Field

[0001] The present invention relates to a bottle holding mechanism and a carbon dioxide gas injection device.

Background Art

[0002] Patent Document 1 discloses a clamping device that forms part of a carbonating head assembly for attaching a container of carbonated beverage to a carbonating device. This clamping device has a plurality of prongs radially arranged to hold the mouth of the container, and a tightening ring for tightening the plurality of prongs so that when the user positions the container in a non-erect state on the carbonating head assembly and moves the container to an erect state, the mouth of the container is held by the plurality of prongs.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the clamping device of Patent Document 1, after positioning the mouth of the container in a non-vertical state on the carbonating head assembly, the mouth of the container is held by a plurality of clamps by rotating the container to a vertical state. However, it is difficult for the user to know at which point the container is securely held, which may give the user a sense of unease.

[0005] The present invention provides a bottle holding mechanism and a carbon dioxide gas injection device in which it is easy for the user to know that the bottle is held.

Means for Solving the Problems

[0006] A first aspect of the present invention relates to a bottle holding mechanism, the bottle holding mechanism comprising: a housing; a first annular member having a first opposing surface and arranged to be translatable in a first translational direction and a second translational direction opposite to each other within the housing; a second annular member having a second opposing surface facing the first opposing surface, an end surface opposite to the second opposing surface, an opening into which the mouth of a bottle is inserted, and a groove extending from the end surface so as to engage with a projection provided on the mouth; a holder that holds the housing so as to be rotatable in a third rotational direction and a fourth rotational direction opposite to each other; and a limiting portion that restricts the movement of the projection in the groove, the Rotation of the housing in the third rotational direction is converted into translation of the first annular member in the first translational direction, rotation of the housing in the fourth rotational direction is converted into translation of the first annular member in the second translational direction, the groove includes a longitudinal groove portion extending from the end face of the second annular member in the axial direction of the second annular member, and a transverse groove portion extending from the longitudinal groove portion in the first rotational direction, the bottle is rotated such that the projection engages with the longitudinal groove portion and then rotates along the transverse groove portion in the first rotational direction, the bottle is then rotated in the third rotational direction, the first annular member moves in the first translational direction, and in this state the movement of the projection in the groove is restricted by the limiting portion, thereby locking the mouth.

[0007] A second aspect of the present invention relates to a carbon dioxide injection device for injecting carbon dioxide into a bottle, the carbon dioxide injection device comprising a bottle holding mechanism relating to the first aspect, and a carbon dioxide supply unit for supplying carbon dioxide to the bottle held by the bottle holding mechanism. [Effects of the Invention]

[0008] According to the present invention, a bottle holding mechanism and a carbon dioxide injection device are provided that make it easy for the user to understand that the bottle is being held. [Brief explanation of the drawing]

[0009] [Figure 1] A diagram illustrating the configuration of a carbon dioxide injection device according to one embodiment. [Figure 2] An enlarged view of a carbon dioxide injection device according to one embodiment. [Figure 3] An enlarged view of a carbon dioxide injection device according to one embodiment. [Figure 4] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Figure 5] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Figure 6] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Figure 7] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Figure 8] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Figure 9] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Figure 10] A diagram illustrating the configuration and operation of a carbon dioxide injection device or bottle holding mechanism according to one embodiment. [Modes for carrying out the invention]

[0010] The embodiments will be described in detail below with reference to the attached drawings. Note that the following embodiments do not limit the invention as defined in the claims, and not all combinations of features described in the embodiments are essential to the invention. Two or more features from the multiple features described in the embodiments may be combined arbitrarily. Furthermore, identical or similar configurations will be given the same reference numeral, and redundant descriptions will be omitted.

[0011] Figure 1 illustrates the configuration of a carbon dioxide injection device 100 according to one embodiment. Figures 2 and 3 show enlarged views of a part of the carbon dioxide injection device 100 shown in Figure 1. Here, Figure 2 shows the state in which the bottle 1 is attached to the carbon dioxide injection device 100 or the state in which the bottle 1 is removed from the carbon dioxide injection device 100. Figure 3 shows the state in which the carbon dioxide injection device 100 is ready to inject carbon dioxide into the bottle 1, the state in which the carbon dioxide injection device 100 is injecting carbon dioxide into the bottle 1, or the state in which the carbon dioxide injection device 100 has completed the operation of injecting carbon dioxide into the bottle 1.

[0012] As shown in Figures 1 and 2, the mouth of bottle 1 is inserted diagonally upward U into the insertion hole 11 of the bottle holding mechanism BHM with the axial direction of bottle 1 inclined relative to the vertical (inclined state), and then rotated in the first rotational direction R1, thereby being held by the bottle holding mechanism BHM or the carbon dioxide injection device 100. In this state, even if bottle 1 is pulled diagonally downward D, bottle 1 will not come out of the insertion hole 11 of the bottle holding mechanism BHM. Therefore, according to this embodiment, it is easy for the user to understand that bottle 1 is being held by the bottle holding mechanism BHM. In addition, the operation until bottle 1 is held by the bottle holding mechanism BHM is simple.

[0013] Subsequently, as shown in Figure 3, bottle 1 can be rotated in the third rotation direction R3 to a state parallel to the vertical (vertical state). This state is a state in which bottle 1 is completely held by the bottle holding mechanism BHM or the carbon dioxide injection device 100, or a locked state in which the mouth 2 of bottle 1 (or bottle 1) is locked. From this locked state, bottle 1 cannot be removed from the insertion hole 11 of the bottle holding mechanism BHM unless bottle 1 is rotated in the fourth rotation direction R4, which is the opposite direction of the third rotation direction R3, and then rotated in the second rotation direction R2, which is the opposite direction of the first rotation direction R1. According to this embodiment, the mouth of bottle 1 can be locked in a simple and easy-to-understand operation by inserting the mouth of bottle 1 into the insertion hole 11 of the bottle holding mechanism BHM, rotating it in the first rotation direction R1, and then rotating it in the third rotation direction R3.

[0014] When bottle 1 is fully held by the bottle holding mechanism BHM or the carbon dioxide injection device 100, or when it is locked, carbon dioxide can be injected into bottle 1 through the tube 85 by the carbon dioxide supply unit 90. Subsequently, bottle 1 is rotated in the fourth rotation direction R4, which is opposite to the third rotation direction R3, to return it to an inclined state, and then rotated further in the second rotation direction R2, which is opposite to the first rotation direction R1, to become removable from the bottle holding mechanism BHM. In other words, the locked state is released when bottle 1 is rotated in the second rotation direction R2 after being rotated in the fourth rotation direction R4. In this state, bottle 1 is removed from the bottle holding mechanism BHM or the carbon dioxide injection device 100 by being pulled out in a diagonally downward direction D.

[0015] Here, the first rotation direction R1 and the second rotation direction R2 indicate the direction of rotation (rolling direction) with the central axis of bottle 1 as the axis of rotation, while the third rotation direction R3 and the fourth rotation direction R4 indicate the direction of rotation (pitching direction) of the central axis of bottle 1.

[0016] FIG. 4(a) schematically shows a state where the carbon dioxide injection device 100 or the bottle holding mechanism BHM is waiting for the attachment (insertion) of the bottle 1, or a state where the bottle 1 has been removed from the carbon dioxide injection device 100 or the bottle holding mechanism BHM. FIG. 4(b) schematically shows a state where the bottle 1 is attached to the carbon dioxide injection device 100 or the bottle holding mechanism BHM and the bottle 1 is in a vertical state (locked state). The bottle holding mechanism BHM can receive the bottle 1 in an inclined state where its axial direction is inclined with respect to the vertical direction.

[0017] As schematically shown in FIG. 4(a), the bottle 1 may have a mouth portion 2 provided with a protrusion 3. The carbon dioxide injection device 100 or the bottle holding mechanism BHM can hold the bottle 1 or the mouth portion 2 of the bottle 1 using the protrusion 3. When the bottle 1 is held by the bottle holding mechanism BHM in a vertical state, that is, in the locked state, the bottle holding mechanism BHM may also be in a vertical state where its axial direction is parallel to the vertical direction.

[0018] Hereinafter, referring to FIG. 4 and FIGS. 5 to 10, the configuration and operation of the bottle holding mechanism BHM and the carbon dioxide injection device 100 will be exemplarily described. In FIGS. 6 to 10, a state where the holder 20 is removed is shown for improved visibility. Also, FIG. 10 is an enlarged view of a part of FIG. 6.

[0019] The bottle holding mechanism BHM may include a housing 10 and a holder 20 that holds the housing 10 rotatable in a third rotation direction R3 and a fourth rotation direction R4 that are opposite to each other. The bottle holding mechanism BHM may also include a first annular member 30 and a second annular member 40. The first annular member 30 and the second annular member 40 can be held by the housing 10.

[0020] The first annular member 30 can be arranged in the housing 10 so as to be translatable in a first translation direction T1 and a second translation direction T2 that are opposite to each other. The first annular member 30 may have a first opposing surface 31. The first opposing surface 31 can be a sawtooth-shaped engaging surface.

[0021] The second annular member 40 may be rotatably positioned within the housing 10 in a first rotational direction R1 and a second rotational direction R2 that are opposite to each other. As illustrated in Figure 10, the second annular member 40 may have a second opposing surface 41 opposite to the first opposing surface 31 and an end surface 42 opposite to the second opposing surface 41. The second opposing surface 41 may be a sawtooth engagement surface. In the locked state, with the mouth 2 of the bottle 1 locked, the first engagement surface as the first opposing surface 31 may engage with the second engagement surface as the second opposing surface 41.

[0022] Furthermore, the second annular member 40 may have an opening 43 into which the mouth 2 of the bottle 1 is inserted, and a groove 44 extending from the end face 42 so as to engage with a projection 3 provided on the mouth 2 of the bottle 1. The groove 44 may include a longitudinal groove 441 extending from the end face 42 of the second annular member 40 in the axial direction (second translational direction T2) of the second annular member 40, and a transverse groove 442 extending from the longitudinal groove 441 in the circumferential direction (first rotational direction R1) of the second annular member 40.

[0023] As illustrated in Figures 4 and 5, the holder 20 holds the housing 10 so that it can rotate in a third rotational direction R3 and a fourth rotational direction R4, which are opposite to each other. Also, as illustrated in Figure 8, the bottle holding mechanism BHM may include a limiting portion 70 that restricts the movement of the projection 3 of the mouth portion 2 within the groove 44. The limiting portion 70 may be fixed to the first annular member 30, or the limiting portion 70 may be configured as part of the first annular member 30.

[0024] Rotation of the housing 10 in the third rotational direction R3 can be converted into translation of the first annular member 30 in the first translational direction T1, and rotation of the housing 10 in the fourth rotational direction R4 can be converted into translation of the first annular member 30 in the second translational direction T2. ​​The bottle 1 is rotated so that the projection 3 of the mouth 2 engages with the longitudinal groove 441 and then rotates along the transverse groove 442 in the first rotational direction R1, and then the bottle 1 is rotated in the third rotational direction R3, which can move the first annular member 30 in the first translational direction T1. In this state, the movement of the projection 3 in the groove 44 is restricted by the limiting portion 70, which can lock the mouth 2 or the bottle 1 into a locked state. The locked state in which the mouth 2 is locked can be maintained as long as the bottle 1 is not rotated in the fourth rotational direction R4. Furthermore, if the bottle 1 is rotated in the fourth rotational direction R4 from a state where the mouth portion 2 is locked, it is not possible to pull the bottle 1 out of the opening 43 or the insertion hole 11.

[0025] When the housing 10 and bottle 1 are in an inclined state, the first translational direction T1 and the second translational direction T2 may be parallel to the diagonally upward direction U and the diagonally downward direction D. When the housing 10 and bottle 1 are in a vertical state, the first translational direction T1 and the second translational direction T2 may be parallel to the vertical direction.

[0026] The insertion of the mouth portion 2 of the bottle 1 into the insertion hole 11 of the bottle holding mechanism BHM can also be understood as the insertion of the mouth portion 2 into the opening 43 of the second annular member 40. The insertion of the mouth portion 2 into the opening 43 of the second annular member 40 is made such that the projection 3 engages with the groove 44. The groove 44 may include a longitudinal groove 441 and a transverse groove 442, as described above. The insertion of the mouth portion 2 of the bottle 1 into the opening 43 or insertion hole 11 is accompanied by the insertion of the projection 3 into the longitudinal groove 441, and the subsequent rotation of the bottle 1 in the first rotation direction R1 is accompanied by the rotation of the projection 3 in the transverse groove 442 in the first rotation direction R1. The rotation of the bottle 1 in the first rotation direction R1 causes the second annular member 40 to rotate in the first rotation direction R1 by the projection 3 abutting against the deepest part 443 of the transverse groove 442. The range of rotation of the second annular member 40 in the first rotational direction R1 can be limited, for example, by contact between the limiting portion 70 and a second limiting portion (not shown) provided on the second annular member 40.

[0027] As illustrated in Figure 4(a), the housing 10 may include a bottom portion 12 and a side portion 13 extending from the bottom portion 12 (in a direction parallel to the first translational direction T1). The bottom portion 12 may have an insertion hole 11 into which the mouth portion 2 of the bottle 1 is inserted, and may be configured to restrict the second annular member 40 with respect to the first translational direction T1. The side portion 13 may be configured to at least partially surround the first annular member 30 and the second annular member 40. The side portion 13 may have, for example, a rectangular tube shape.

[0028] The bottle holding mechanism BHM may further include a holding member 50 that holds the first annular member 30 within the housing 10. The side portion 13 of the housing 10 may be provided with a slot extending in the axial direction of the housing 10. The holding member 50 may have a projection 52 that protrudes through the slot provided in the side portion 13 of the housing 10. The holder 20 may have a pivot portion 22 that pivots the housing 10 to enable rotation of the housing 10 in a first rotation direction R1 and a second rotation direction R2, as schematically shown in Figures 4(a) and 4(b), and a guide groove 24 that guides the projection 52.

[0029] The rotation of the housing 10 in the third rotation direction R3 and the fourth rotation direction R4 can be converted into movement of the first annular member 30 in the first translation direction T1 and the second translation direction T2 by the projection 52 that moves in the guide groove 24. More specifically, the rotation of the housing 10 in the third rotation direction R3 can be converted into translation of the first annular member 30 in the first translation direction T1, and the rotation of the housing 10 in the fourth rotation direction R4 can be converted into translation of the first annular member 30 in the second translation direction.

[0030] The retaining member 50 has a first engaging portion 55, and the second annular member 40 has a second engaging portion 45. When the mouth portion 2 of the bottle 1 is locked, the second engaging portion 45 may be engaged with the first engaging portion 55.

[0031] The bottle holding mechanism BHM may further include an indicator DS that displays the state in which the bottle 1 has been rotated such that the projection 3 of the mouth 2 engages with the longitudinal groove 441 and then rotates along the transverse groove 442 in a first rotational direction R1, as illustrated in Figure 4(b). The indicator DS may include, for example, a mark 48 provided on a second annular member 40 that is rotatable in a first rotational direction R1 and a second rotational direction R2, and a window 18 provided on the housing 10. In one example, when the bottle 1 is operated so that the projection 3 is inserted into the longitudinal groove 441 and then rotates along the transverse groove 442 in a first rotational direction R1, a mark 48 having a first collar appears in the window 18. On the other hand, when the bottle 1 is operated from that state so that the projection 3 rotates along the transverse groove 442 in a second rotational direction R2, a portion having a second collar (for example, a part of the second annular member 40) appears in the window 18.

[0032] The bottle holding mechanism BHM may further include a coil spring 60 that applies a force to the first annular member 30 and the second annular member 40 in a direction that separates the first annular member 30 and the second annular member 40 from each other. The coil spring 60 may be arranged to generate a resistance force against the rotation of the second annular member 40 in the first rotational direction R1.

[0033] As illustrated in Figure 10, the bottle holding mechanism BHM may include a sealing portion 80 that seals the mouth 2 of the bottle 1 when it is inserted into the opening 43 of the second annular member 40 to a predetermined depth. The bottle holding mechanism BHM may further include a tube 85 that penetrates the first annular member 30 and the second annular member 40. The carbon dioxide supply unit 90 of the carbon dioxide injection device 100 may be configured to inject carbon dioxide into the bottle 1 (the beverage inside the bottle 1) through the tube 85. The sealing portion 80 may be attached to the tube 85.

[0034] The following describes, with reference to Figures 5 to 10, the attachment of bottle 1 to the carbon dioxide injection device 100 or the bottle holding mechanism BHM, and the removal of bottle 1 from the carbon dioxide injection device 100 or the bottle holding mechanism BHM.

[0035] Figures 5, 6, and 10 show how the mouth portion 2 of the bottle 1 is inserted diagonally upward U into the opening 43 (insertion hole 11 of the housing 10) of the second annular member 40, and how the projection 3 of the mouth portion 2 engages with the groove 44 (vertical groove portion 441) of the second annular member 40. Note that the housing 10 is not shown in Figures 6 to 10.

[0036] Figure 7 shows the state in which the bottle 1 is rotated in the first rotational direction R1 from the state shown in Figures 5, 6, and 10, and as a result the projection 3 moves in the first rotational direction R1 within the lateral groove 442.

[0037] Figure 8 shows the locked state where, from the state shown in Figure 7, the bottle 1 is rotated in the third rotational direction R3, thereby translating the first annular member 30 in the first translational direction T1, and the bottle 1 or mouth 2 is locked. In this state, carbon dioxide is injected into the bottle 1 (the beverage inside the bottle 1) through the tube 85 by the carbon dioxide supply unit 90. After the injection of carbon dioxide into the bottle 1 is complete, the carbon dioxide injection device 100 may prompt the user to return the bottle 1 to its tilted state, for example, by an notification unit (not shown).

[0038] Figure 9 shows the state after carbon dioxide has been injected into bottle 1 (the beverage inside bottle 1) and bottle 1 has been rotated in the fourth rotational direction R4. In this state, projection 3 is still engaged with the lateral groove 442. Therefore, bottle 1 cannot be pulled out.

[0039] Subsequently, the bottle 1 is rotated in the second rotational direction R2, resulting in the state shown in Figures 5, 6, and 10. In this state, the mouth portion 2 of the bottle 1 can be pulled out diagonally downward D from the opening 43 of the second annular member 40 (the insertion hole 11 of the housing 10).

[0040] As described above, in the state shown in Figure 8, carbon dioxide gas can be injected into bottle 1 (the beverage filled in bottle 1) through tube 85 by the carbon dioxide gas supply unit 90. The injection of carbon dioxide gas into bottle 1 may be performed in response to the user operating an operation button (not shown). Alternatively, the injection of carbon dioxide gas into bottle 1 may be performed or stopped in response to the output of a sensor that detects that the housing 10 is in the vertical position shown in Figure 8. This configuration, in which carbon dioxide gas is injected into bottle 1 by the carbon dioxide gas supply unit 90 on the condition that bottle 1 is in the state shown in Figure 8, prevents carbon dioxide gas from being sprayed from the carbon dioxide gas supply unit 90 even if bottle 1 is not properly attached to the bottle holding mechanism BHM.

[0041] The invention is not limited to the embodiments described above, and various modifications and changes are possible within the scope of the gist of the invention. [Explanation of Symbols]

[0042] 1: Bottle, 2: Mouth, 3: Projection, BHM: Bottle holding mechanism, U: Diagonal upward direction, D: Diagonal downward direction, 10: Housing, 11: Insertion hole, 12: Bottom surface, 13: Side surface, 18: Window, 20: Holder, 22: Pivot support, 24: Guide groove, 30: First annular member, 31: First opposing surface, 40: Second annular member, 41: Second opposing surface, 42: End surface, 43: Opening, 44: Groove, 441: Vertical groove, 442: Horizontal groove ,443: Deepest part, 45: Second engaging part, 48: Mark, 50: Retaining member, 52: Protruding part, 55: First engaging part, 60: Coil spring, 70: Restricting part, 80: Seal part, 85: Tube, 90: Carbon dioxide supply part, 100: Carbon dioxide injection device, T1: First translational direction, T2: Second translational direction, R1: First rotational direction, R2: Second rotational direction, R3: Third rotational direction, R4: Fourth rotational direction, DS: Indicator

Claims

1. Housing and Within the housing, a first annular member is arranged to be translatable in a first translational direction and a second translational direction which are opposite to each other, and has a first opposing surface. The housing includes a second annular member that is rotatable in a first rotational direction and a second rotational direction which are opposite to each other, and has a second opposing surface facing the first opposing surface, an end surface opposite to the second opposing surface, an opening into which the mouth of the bottle is inserted, and a groove extending from the end surface so as to engage with a projection provided on the mouth, A holder that holds the housing so that it can rotate in a third rotation direction and a fourth rotation direction which are opposite to each other, A limiting portion is provided to restrict the movement of the projection within the groove, The rotation of the housing in the third rotational direction is converted into translation of the first annular member in the first translational direction, and the rotation of the housing in the fourth rotational direction is converted into translation of the first annular member in the second translational direction. The groove includes a longitudinal groove extending from the end face of the second annular member in the axial direction of the second annular member, and a transverse groove extending from the longitudinal groove in the first rotational direction. After the projection engages with the longitudinal groove, the bottle is rotated along the transverse groove in the first rotational direction, and then the bottle is rotated in the third rotational direction, causing the first annular member to move in the first translational direction. In this state, the movement of the projection within the groove is restricted by the limiting portion, causing the mouth to lock. A bottle holding mechanism characterized by the following features.

2. The locked state is released when the bottle is rotated in the second rotation direction after being rotated in the fourth rotation direction. The bottle holding mechanism according to feature 1.

3. In the locked state, the bottle cannot be removed from the opening by simply rotating it in the fourth rotational direction. The bottle holding mechanism according to feature 2.

4. The housing includes a bottom portion having an insertion hole into which the opening is inserted and restricting the second annular member with respect to the first translational direction, and a side portion extending from the bottom portion so as to at least partially surround the first annular member and the second annular member. The bottle holding mechanism according to feature 1.

5. The aforementioned side portion has a rectangular tube shape. The bottle holding mechanism according to feature 4.

6. The housing further comprises a retaining member for holding the first annular member, The retaining member has a protruding portion that protrudes through a slot provided on the side surface of the housing, The holder has a pivot portion that pivots the housing so as to enable the housing to rotate in the third and fourth rotation directions, and a guide groove that guides the protruding portion. The bottle holding mechanism according to feature 4.

7. The retaining member has a first engaging portion, and the second annular member has a second engaging portion. In the locked state, the second engaging portion is engaged with the first engaging portion. The bottle holding mechanism according to feature 6.

8. The first opposing surface has a sawtooth-shaped first engaging surface, and the second opposing surface has a sawtooth-shaped second engaging surface, and in the locked state, the first engaging surface engages with the second engaging surface. The bottle holding mechanism according to feature 1.

9. The invention further comprises a coil spring that applies a force to the first annular member and the second annular member in a direction that separates the first annular member and the second annular member from each other. The bottle holding mechanism according to feature 1.

10. The coil spring is arranged to generate a resistance force against the rotation of the second annular member in the first rotational direction. The bottle holding mechanism according to feature 9.

11. The system further includes a display that indicates the state in which the bottle has been rotated so that the projection engages with the vertical groove and then rotates along the horizontal groove in a first rotational direction. The bottle holding mechanism according to feature 1.

12. The limiting portion is fixed to the first annular member. The bottle holding mechanism according to feature 11.

13. The system further includes a sealing portion that seals the opening in the locked state. The bottle holding mechanism according to feature 1.

14. The device further comprises a tube that penetrates the first annular member and the second annular member, The sealing portion is attached to the tube, The bottle holding mechanism according to feature 13.

15. A carbon dioxide injection device for injecting carbon dioxide into a bottle, A bottle holding mechanism according to any one of claims 1 to 14, A carbon dioxide supply unit that supplies carbon dioxide to a bottle held by the bottle holding mechanism, A carbon dioxide injection device characterized by comprising the following features.

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