A hydrogen-rich drinking water cup with bacteria growth prevention

Abstract

The application relates to the technical field of germicidal lamps, in particular to a hydrogen-rich drinking cup capable of preventing bacterial breeding, which comprises a cup body, a cup cover and an electrolysis base, the cup cover is threadedly connected with the bottle mouth of the cup body, the electrolysis base is movably arranged on the cup cover, a rotary top is movably arranged on the cup cover, a threaded guide groove extending downward is arranged in the middle of the top of the cup cover, and an annular baffle is threadedly connected with the inner top end of the threaded guide groove. The electrolysis base is not used as the cup bottom, can be detached from the cup body, and the water cup can be normally used. When the water cup is used, the electrolysis base does not need to be always equipped on the water cup, when electrolysis is needed, the electrolysis base only needs to be placed on the cup cover (the whole water cup needs to be inverted in the process), and when electrolysis is not needed, the electrolysis base can be taken away, so that the problem that the electrolysis base is always equipped on the water cup in the prior art, the overall height of the water cup is increased, the volume and weight of the water cup are increased, and the water cup is not very convenient to carry is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen-rich drinking cup technology, and in particular to a hydrogen-rich drinking cup that prevents bacterial growth. Background Technology

[0002] Hydrogen-rich drinking cups are made by producing hydrogen-rich water through micro-electrolysis of water by the hydrogen-rich ceramic, generating hydrogen bubbles that dissolve in the water to become hydrogen-rich water; they can also produce negative potential water by the presence of various mineral ions with different potential values ​​in the hydrogen-rich ceramic; and they can produce weakly alkaline water by the natural micro-electrolysis of water by the hydrogen-rich ceramic, which increases the number of hydroxide ions and forms weakly alkaline water.

[0003] Currently, hydrogen-rich water cups all have an electrolytic base installed at the bottom of the cup body. This electrolytic base serves as the cup bottom. Although it can be removed, the electrolytic base must always be attached to the cup during use, otherwise the cup cannot be used. However, the electrolytic base always being attached to the cup increases the overall height, size, and weight of the cup, making it less convenient to carry. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrogen-rich drinking cup that prevents bacterial growth in order to solve the above-mentioned problems. This solves the problem that the electrolytic base is always attached to the cup, which increases the overall height, size and weight of the cup, making it inconvenient to carry.

[0005] The present invention achieves the above objectives through the following technical solution: a hydrogen-rich drinking cup that prevents bacterial growth, comprising a cup body, a cup lid, and an electrolysis base, wherein the cup lid is threadedly connected to the bottle mouth of the cup body, the electrolysis base is movably mounted on the cup lid, and a rotating top is movably mounted on the cup lid;

[0006] The top center of the cup lid has an internal threaded guide groove that extends downwards. The top of the internal threaded guide groove is threaded with an annular baffle. The upper end of the baffle has several metal positioning grooves.

[0007] The electrolytic base has an open cavity with a guide cylinder fixedly installed inside. The inner wall of the guide cylinder has a spiral guide groove. The cavity also has an inner cylinder, which is fixedly connected to the rotating top. An annular movable plate is installed inside the inner cylinder. Guide blocks are installed on both sides of the movable plate. An electrolytic shell is provided below the movable plate. The electrolytic plate is installed inside the electrolytic shell. Several connecting rods are fixed to the lower end of the movable plate. The connecting rods pass through the electrolytic shell and are fixed to the electrolytic shell. A sealing plate is installed at the bottom of the connecting rods. Several magnetic blocks are installed at the lower end of the sealing plate.

[0008] The inner cylinder is provided with a vertical guide groove on its outside. The guide block passes through the vertical guide groove and makes contact with the spiral guide groove. Several magnetic blocks correspond one-to-one with several metal positioning grooves. The magnetic blocks are inserted into the metal positioning grooves.

[0009] Preferably, a sealing gasket is installed on the lower part of the electrolytic base and the edge of the movable plate.

[0010] Preferably, a certain gap is maintained between the edge of the electrolytic shell and the inner cylinder, and the upper end face of the electrolytic shell has a conical structure.

[0011] Preferably, the sealing plate has a cavity inside, and several fan-shaped pieces are movably fitted inside the cavity. The fan-shaped pieces are connected by a gathering end. The sealing plate has fan-shaped holes at both the upper and lower ends, and the upper and lower fan-shaped holes are open to each other.

[0012] The top of the rotating top has a recess in the middle, and a twist cap is movably embedded in the recess. A telescopic rod is fixed at the lower end of the twist cap. The telescopic rod consists of an outer rod and an inner rod, which are splined together. The outer rod of the telescopic rod passes through the rotating top, the electrolytic base, the movable plate and the electrolytic shell in sequence. The bottom end of the inner rod is fixed to the aggregation end connecting several fan-shaped plates.

[0013] When the cap is twisted, the telescopic rod and several fan-shaped pieces at the bottom of the telescopic rod rotate inside the sealing plate, and the fan-shaped pieces seal the upper and lower fan-shaped holes.

[0014] Preferably, the top of the cap is recessed, and the recessed portion is provided with a crossbar.

[0015] Preferably, a sealing gasket is also installed on the outside of the fan-shaped piece.

[0016] Preferably, an outer sleeve is tightly and movably embedded in the outside of the electrolytic base. The inner wall of the outer sleeve is provided with a number of equidistant protrusions. The outer walls of both the electrolytic base and the rotating top are provided with a number of equidistant sliding grooves. The sliding grooves on the electrolytic base are connected to the sliding grooves on the rotating top. The outer sleeve slides up and down on the electrolytic base through the protrusions and sliding grooves.

[0017] Preferably, the height of the groove on the rotating top is lower than the height of the rotating top.

[0018] Preferably, the height of the outer sleeve is greater than the height of the electrolytic base.

[0019] Preferably, the two sides of the groove have a certain curvature, the protrusion is arc-shaped, and the protrusion matches the groove.

[0020] The beneficial effects of this invention are:

[0021] 1. By fixing the electrolytic bottom to the cup lid, and setting a baffle that can rotate internally on the cup lid, when the rotating top is rotated, the guide cylinder is driven to rotate, causing the sealing plate and electrolytic shell to move towards the cup lid. After the sealing plate and the baffle are positioned, the baffle is driven to move into the cup body, so that the sealing plate and electrolytic shell are both moved into the cup body, and micro-electrolysis is performed on the water in the cup body. In this way, the electrolytic bottom does not need to be used as the cup bottom. The electrolytic bottom can be removed from the cup body, and the cup can be used normally. When using the cup, the electrolytic bottom does not need to be always attached to the cup. When electrolysis is needed, simply place the electrolytic bottom on the cup lid (this process requires the entire cup to be upside down). When not needed, the electrolytic bottom can be removed, thus effectively solving the problem of the electrolytic bottom always being attached to the cup in the existing technology, which increases the overall height, volume and weight of the cup, making it inconvenient to carry.

[0022] 2. The sealing plate can not only be used to open the baffle on the cup lid, but also to block the inlet and outlet of the electrolytic bottom when it is removed, preventing dust from entering the electrolytic bottom.

[0023] 3. Since the sealing plate and electrolysis shell are both inside the cup during electrolysis, the sealing plate will block part of the water flow. To address this, the sealing plate is designed with open fan-shaped holes at both the top and bottom, and the sealing plate contains fan-shaped plates that can block the fan-shaped holes. During electrolysis, the fan-shaped plates can be rotated inside the sealing plate by rotating the telescopic rod, so that the fan-shaped plates no longer block the fan-shaped holes. This facilitates water flow, accelerates the electrolysis speed, and prevents the electrolysis efficiency from decreasing due to the location of the sealing plate.

[0024] 4. By setting the top of the electrolytic shell in a conical shape and ensuring that the edge of the motor housing does not contact the inner wall of the inner cylinder, the water adhering to the electrolytic shell can be quickly discharged when the electrolytic shell is reset into the electrolytic bottom. In addition, the edge of the movable plate has a sealing gasket, which can prevent moisture from remaining in the electrolytic bottom, thereby preventing the growth of bacteria in the electrolytic bottom.

[0025] 5. By providing an outer sleeve that can slide up and down over the electrolytic base, when the electrolytic base is attached to the cup lid for electrolysis of water in the cup, the outer sleeve can slide down along the electrolytic base. The outer sleeve simultaneously covers the electrolytic base, the cup lid, and the upper part of the cup body to prevent the electrolytic base from shaking or falling off the cup lid, ensuring stability during electrolysis. When the electrolytic base is removed, the outer sleeve can slide upwards along the electrolytic base. At this time, the outer sleeve covers the outside of the electrolytic base and the rotating top. Since the height of the outer sleeve is greater than the height of the electrolytic base, the outer sleeve can cover the rotating top, preventing accidental over-twisting of the rotating top and damage to the internal components of the electrolytic base. The outer sleeve can also support and hide the bottom end of the electrolytic base inside the outer sleeve, preventing the electrolytic base from becoming contaminated. Attached Figure Description

[0026] Figure 1This is a front view structural diagram of the present invention;

[0027] Figure 2 This is a frontal sectional view of the present invention.

[0028] Figure 3 for Figure 2 This is an enlarged structural diagram of point A;

[0029] Figure 4 This is a cross-sectional and enlarged structural diagram of the electrolytic bottom of the present invention;

[0030] Figure 5 This is a schematic diagram of the rotating top structure of the present invention from a top view;

[0031] Figure 6 This is a top-view cross-sectional view of the sealing plate in this invention;

[0032] Figure 7 This is a schematic diagram of the sector-shaped sheet structure in this invention;

[0033] Figure 8 This is a schematic diagram of the internal explosion structure of the electrolytic substrate in this invention;

[0034] Figure 9 This is a schematic diagram of the connection structure between the telescopic rod and the assembly end in this invention;

[0035] Figure 10 This is a schematic diagram of the structure after the outer sleeve is installed on the outside of the electrolytic base in this invention;

[0036] Figure 11 This is a schematic diagram of the structure after the groove is opened on the outside of the electrolytic bottom in this invention;

[0037] Figure 12 This is a three-dimensional structural diagram of the electrolytic bottom after a groove is formed on its exterior in this invention;

[0038] Figure 13 This is a top-view schematic diagram of the rotating structure in this invention;

[0039] Figure 14 This is a schematic diagram of the cross-sectional structure of the outer sleeve in this invention;

[0040] Figure 15 This is a top view of the outer sleeve structure in this invention.

[0041] In the diagram: 1. Cup body; 2. Cup lid; 3. Electrolytic base; 4. Rotating top; 5. Internal threaded guide groove; 6. Baffle; 7. Guide cylinder; 8. Spiral guide groove; 9. Inner cylinder; 10. Guide block; 11. Movable piece; 12. Connecting rod; 13. Electrolytic shell; 14. Sealing plate; 15. Magnetic block; 16. Metal positioning groove; 17. Torque cap; 18. Telescopic rod; 19. Fan-shaped hole; 20. Gathering end; 21. Fan-shaped piece; 22. Outer sleeve; 23. Slide groove; 24. Protrusion. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In practical implementation: such as Figure 1-9 As shown, a hydrogen-rich drinking cup with antibacterial properties includes a cup body 1, a cup lid 2, and an electrolysis base 3. The cup lid 2 is threadedly connected to the bottle mouth of the cup body 1. The electrolysis base 3 is movably mounted on the cup lid 2. A rotating top 4 is movably mounted on the cup lid 2. An internally threaded guide groove 5 is formed in the center of the top of the cup lid 2 and extends downward. An annular baffle 6 is threadedly connected to the top of the internally threaded guide groove 5. Several metal positioning grooves 16 are formed at the upper end of the baffle 6. The electrolysis base 3 has a cavity that is open at both ends. A guide cylinder 7 is fixedly installed in the cavity. A spiral guide groove 8 is provided on the inner wall of the guide cylinder 7. An inner cylinder 9 is also provided in the cavity. The inner cylinder 9 is fixedly connected to the rotating top 4. An annular movable piece 11 is installed inside the inner cylinder 9. Guide blocks 10 are installed on both sides of the outer side of the inner cylinder 9. An electrolytic shell 13 is provided below the movable plate 11. An electrolytic plate is installed inside the electrolytic shell 13. Several connecting rods 12 are fixed to the lower end of the movable plate 11. The connecting rods 12 pass through the electrolytic shell 13 and are fixed to the electrolytic shell 13. A sealing plate 14 is installed at the bottom of the connecting rods 12. Several magnetic blocks 15 are installed at the lower end of the sealing plate 14. A vertical guide groove is provided on the outer side of the inner cylinder 9. The vertical guide groove serves to limit the guide block 10. The guide block 10 passes through the vertical guide groove and makes contact with the spiral guide groove 8. Several magnetic blocks 15 correspond one-to-one with several metal positioning grooves 16. The magnetic blocks 15 are inserted into the metal positioning grooves 16.

[0044] When using the above method, when the electrolytic bottom 3 is placed on the cup lid 2, manually rotate the rotating top 4. At this time, the inner cylinder 9 rotates together with the electrolytic bottom 3. The movable piece 11 inside the inner cylinder 9 moves along the spiral guide groove 8 on the inner wall of the guide cylinder 7 through the guide block 10 on its outside. The movable piece 11 starts to rotate and descend. The descent of the movable piece 11 drives the electrolytic shell 13 and the sealing plate 14 to descend. When it descends to a certain extent, the magnetic block 15 at the bottom of the sealing plate 14 is inserted into the metal positioning groove 16 on the baffle 6 on the cup lid 2. At this time, continue to rotate the rotating top 4, and the baffle 6 will rotate together. The rotating baffle 6 will start to move into the cup body 1 along the internal thread guide groove 5, that is, the cup lid 2 is opened. At this time, the electrolytic shell 13 and the sealing plate 14 also enter the cup body 1. Press the switch on the outside of the electrolytic bottom 3, and after the entire cup is inverted, the water in the cup body 1 can be micro-electrolyzed.

[0045] The lower part of the electrolysis base 3 is equipped with a sealing gasket to ensure the airtightness during electrolysis.

[0046] Please see Figure 1-9 During electrolysis, both the sealing plate 14 and the electrolysis shell 13 enter the cup body 1. The sealing plate 14 will block part of the water flow. The sealing plate 14 has a cavity inside, and several fan-shaped pieces 21 are movably fitted inside the cavity. The fan-shaped pieces 21 are connected by a collection end 20. The sealing plate 14 has fan-shaped holes 19 at both the top and bottom, and the two fan-shaped holes 19 are open from top to bottom. The top center of the rotating top 4 has a recess, and a twist cap 17 is movably embedded in the recess. The lower end of the twist cap 17 is fixed. There is a telescopic rod 18, which consists of an outer rod and an inner rod. The outer rod and the inner rod are splined together. The outer rod of the telescopic rod 18 passes through the rotating top 4, the electrolytic base 3, the movable plate 11 and the electrolytic shell 13 in sequence. The bottom end of the inner rod is fixed to the collection end 20 connected to several fan-shaped plates 21. When the torsion cap 17 is twisted, the telescopic rod 18 and several fan-shaped plates 21 at the bottom end of the telescopic rod 18 are rotated in the sealing plate 14, and the upper and lower fan-shaped holes 19 are sealed by the fan-shaped plates 21.

[0047] In the above-mentioned use, since the telescopic outer rod and the telescopic inner rod of the telescopic rod 18 are splined, the telescopic inner rod can only slide up and down inside the telescopic outer rod, and the two will not rotate towards each other or relative to each other. After the electrolytic shell 13 and the sealing plate 14 enter the cup body 1, the finger twists the cap 17, and the cap 17 drives the telescopic rod 18 to rotate, which in turn drives the fan-shaped plate 21 to rotate inside the sealing plate 14, so that the fan-shaped plate 21 no longer blocks the fan-shaped hole 19, and the water flow can pass through the fan-shaped hole 19 through the sealing plate 14, thereby improving the contact efficiency between the water flow and the electrolytic plate inside the electrolytic shell 13 and increasing the electrolysis speed.

[0048] The top of the twist cap 17 is recessed, and the recessed part is provided with a horizontal bar, which makes it easy to pinch the twist cap 17 with your fingers and rotate it.

[0049] Please see Figure 10-15 An outer sleeve 22 is tightly and movably fitted onto the outside of the electrolysis base 3. The inner wall of the outer sleeve 22 has several equidistantly distributed protrusions 24. Both the outer walls of the electrolysis base 3 and the rotating top 4 have several equidistantly distributed sliding grooves 23. The sliding grooves 23 on the electrolysis base 3 communicate one-to-one with those on the rotating top 4. The outer sleeve 22 slides up and down on the electrolysis base 3 via the protrusions 24 and the sliding grooves 23. Because the electrolysis base 3 is fitted onto the outside of the electrolysis base 3, allowing it to slide up and down, when the electrolysis base 3 is mounted on the cup lid 2 to electrolyze the water in the cup body 1, manually pulling the outer sleeve 22 allows it to slide down along the electrolysis base 3. The outer sleeve 22 is placed between the electrolytic base 3, the cup lid 2, and the upper part of the cup body 1 to prevent the electrolytic base 3 from shaking or falling off the cup lid 2, ensuring stability during electrolysis. When the electrolytic base 3 is removed, the outer sleeve 22 can slide upward along the electrolytic base 3. At this time, the outer sleeve 22 is placed outside the electrolytic base 3 and the rotating top 4. Since the height of the outer sleeve 22 is greater than the height of the electrolytic base 3, the outer sleeve 22 can cover the rotating top 4, preventing accidental over-twisting of the rotating top 4 and damage to the internal components of the electrolytic base 3. The outer sleeve 22 can also support and hide the bottom of the electrolytic base 3 inside the outer sleeve 22 to prevent the electrolytic base from getting contaminated.

[0050] The height of the groove 23 on the rotating top 4 is lower than the height of the rotating top 4, which can prevent the outer sleeve 22 from sliding off the rotating top 4, while the outer sleeve 22 can slide down from the bottom of the electrolytic bottom 3.

[0051] Since the two sides of the groove 23 have a certain curvature and the protrusion 24 is arc-shaped, the protrusion 24 matches the groove 23, so there is no discomfort when the hand holds the electrolytic bottom 3 and the rotating top 4.

[0052] After electrolysis is complete, the entire cup is now upright. At this point, the water in the electrolysis bottom 3 will begin to fall. Because there is a certain gap between the edge of the electrolysis shell 13 and the inner cylinder 9, and because the upper surface of the electrolysis shell 13 has a conical structure, the water can quickly slide down from above the electrolysis shell 13 and drip into the cup body 2. Then, rotating the top 4 in the reverse direction causes the sealing plate 14, the electrolysis shell 13, and the movable plate 11 to begin rising into the electrolysis bottom 3. During this rising process, because the edge of the movable plate 11 is fitted with a sealing gasket, the water above the movable plate 11... There is no moisture. At the same time, the baffle 6 is driven to rise along the internal thread guide groove 5. Since there is a ring stop at the top edge of the internal thread guide groove 5, the ring stop stops the baffle 6 and continues to rise. After the baffle 6 stops at this position, the sealing plate 14, the electrolytic shell 13 and the movable piece 11 continue to rise until the sealing plate 14 blocks the inlet and outlet of the electrolytic bottom 3. At this time, the twist cap 17 is rotated in the opposite direction. Since the outside of the fan-shaped piece 21 is also equipped with a sealing gasket, when the fan-shaped piece 21 is rotated in the opposite direction, the moisture remaining in the sealing plate 14 can be pushed out from the fan-shaped hole 19.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydrogen-rich drinking cup that prevents bacterial growth, comprising a cup body (1), a cup lid (2), and an electrolysis base (3), wherein the cup lid (2) is threadedly connected to the bottle mouth of the cup body (1), characterized in that, The electrolysis base (3) is movably mounted on the cup lid (2), and a rotating top (4) is movably mounted on the cup lid (2); The cup lid (2) has an internal threaded guide groove (5) that extends downward from the center of the top. The top of the internal threaded guide groove (5) is threaded with an annular baffle (6). The baffle (6) has several metal positioning grooves (16) at its upper end. The electrolytic base (3) has an open cavity with a guide cylinder (7) fixedly installed inside the cavity. The guide cylinder (7) has a spiral guide groove (8) on its inner wall. The cavity also has an inner cylinder (9) fixedly connected to the rotating top (4). The inner cylinder (9) has an annular movable piece (11) installed inside the inner cylinder (9). The movable piece (11) has guide blocks (10) installed on both sides of its outer side. The movable piece (11) has an electrolytic shell (13) below it. The electrolytic piece is installed inside the electrolytic shell (13). The movable piece (11) has several connecting rods (12) fixed at its lower end. The connecting rods (12) all pass through the electrolytic shell (13). The connecting rods (12) are fixed to the electrolytic shell (13). The bottom of the connecting rods (12) is connected to a sealing plate (14). The lower end of the sealing plate (14) has several magnetic blocks (15). The inner cylinder (9) has a vertical guide groove on its outside. The guide block (10) passes through the vertical guide groove and makes contact with the spiral guide groove (8). Several magnetic blocks (15) correspond one-to-one with several metal positioning grooves (16). The magnetic blocks (15) are inserted into the metal positioning grooves (16).

2. The hydrogen-rich drinking cup with antibacterial properties according to claim 1, characterized in that: Sealing gaskets are installed on the lower part of the electrolysis base (3) and the edge of the movable piece (11).

3. A hydrogen-rich drinking cup with antibacterial properties according to claim 1, characterized in that: The edge of the electrolytic shell (13) maintains a certain gap with the inner cylinder (9), and the upper end face of the electrolytic shell (13) has a conical structure.

4. A hydrogen-rich drinking cup with antibacterial properties according to claim 1, characterized in that: The sealing plate (14) has a cavity inside, and several fan-shaped pieces (21) are movably fitted inside the cavity. The fan-shaped pieces (21) are connected by a gathering end (20). The sealing plate (14) has fan-shaped holes (19) at both the top and bottom, and the two fan-shaped holes (19) are open to each other. The top center of the rotating top (4) is provided with a recess, and a twist cap (17) is movably inlaid in the recess. A telescopic rod (18) is fixed at the lower end of the twist cap (17). The telescopic rod (18) is composed of an outer rod and an inner rod. The outer rod and the inner rod are splined together. The outer rod of the telescopic rod (18) passes through the rotating top (4), the electrolytic base (3), the movable plate (11) and the electrolytic shell (13) in sequence. The bottom end of the inner rod is fixed to the collection end (20) connecting several fan-shaped plates (21). When the twist cap (17) is twisted, the telescopic rod (18) and several fan-shaped pieces (21) at the bottom of the telescopic rod (18) rotate inside the sealing plate (14), and the fan-shaped pieces (21) seal the upper and lower fan-shaped holes (19).

5. A hydrogen-rich drinking cup with antibacterial properties according to claim 4, characterized in that: The top of the twist cap (17) is recessed, and the recessed part is provided with a crossbar.

6. A hydrogen-rich drinking cup with antibacterial properties according to claim 4, characterized in that: The outside of the fan-shaped piece (21) is also fitted with a sealing gasket.

7. A hydrogen-rich drinking cup with antibacterial properties according to claim 1, characterized in that: The electrolytic base (3) is tightly and movably inlaid with an outer sleeve (22). The inner wall of the outer sleeve (22) is provided with several equidistantly distributed protrusions (24). The outer walls of the electrolytic base (3) and the rotating top (4) are provided with several equidistantly distributed sliding grooves (23). The sliding grooves (23) on the electrolytic base (3) are connected to the sliding grooves (23) on the rotating top (4). The outer sleeve (22) slides up and down on the electrolytic base (3) through the protrusions (24) and the sliding grooves (23).

8. A hydrogen-rich drinking cup with antibacterial properties according to claim 7, characterized in that: The height of the groove (23) on the rotating top (4) is lower than the height of the rotating top (4).

9. A hydrogen-rich drinking cup with antibacterial properties according to claim 7, characterized in that: The height of the outer sleeve (22) is greater than the height of the electrolytic base (3).

10. A hydrogen-rich drinking cup with antibacterial properties according to claim 7, characterized in that: The two sides of the groove (23) have a certain curvature, and the protrusion (24) is arc-shaped and matches the groove (23).

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