Detachable and washable double-drinking coffee cup

By adopting sliding tracks and positioning bulge design in the double-drinking coffee cup, the inconvenience and hygiene problems of traditional double-drinking cups are solved, and the cup lid is conveniently split and clean, improving user experience and health and safety.

CN222264951UActive Publication Date: 2024-12-31WUYI COUNTY XUANCHI IND & TRADE CO LTD
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Patent Information

Application Number
CN202420765717.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-12
Publication Date
2024-12-31
Estimated Expiration
2034-04-12

AI Technical Summary

Technical Problem

The cup lid of the traditional double drinking cup is connected to the cup body by threads, and the overall assembly is not detached, making it inconvenient to use and unhygienic, resulting in the accumulation of dust and dirt during drinking, which may breed bacteria and affect health.

Method used

A detachable and washable double-drinking coffee cup is designed, which is connected by sliding tracks between the upper lid and the lower lid. It can easily split and seal the cup lid by positioning the projection and avoiding the notch, ensuring easy use and hygiene.

Benefits of technology

It realizes convenient separation and cleaning of the cup lid, improves hygiene, and significantly improves user experience and health and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of water cups, in particular to a detachable and washable double-drinking coffee cup which comprises a cup cover and a cup body, the cup cover is connected with the cup body, the cup cover comprises an upper cover body and a lower cover body, the lower cover body is provided with a direct drinking opening and a straw opening, the upper cover body is provided with a first sealing block and a second sealing block, the first sealing block is used for sealing the straw opening, and the second sealing block is used for sealing the straw opening. The second sealing block is used for blocking the direct drinking opening, a sliding rail is arranged on the outer side wall of the lower cover body, a positioning protrusion corresponding to the sliding rail is arranged on the inner side wall of the upper cover body, the positioning protrusion is slidably connected with the sliding rail, and an avoiding notch allowing the positioning protrusion to pass through is formed in the side wall of the sliding rail. The utility model provides a detachable and washable double-drinking coffee cup which solves the problems that a traditional double-drinking cup is not convenient to open and not sanitary enough to use.
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Description

Technical Field

[0001] The utility model relates to the field of water cups, in particular to a detachable and washable double-drinking coffee cup. Background Art

[0002] Now as people's drinking water needs become more and more diversified, a single drinking method can no longer meet people's needs. Therefore, double drinking cups have appeared on the market. The cup lid is equipped with both a direct drinking port and a straw port, which allows users to choose the drinking method according to actual needs, greatly expanding the application scenarios of water cups.

[0003] However, the cup lid and the cup body of the traditional double-drink cup are connected by threads. The cup lid is usually divided into multiple layers and is mostly assembled as a whole. It cannot be disassembled during use. When using it, the user needs to open the direct drinking port and the straw port one by one, or separate a part of the cup lid from the cup body to drink the water in the cup body, which makes it extremely inconvenient for the user to open the cup lid when he needs to drink water. Moreover, since the cup lid of the overall assembly cannot be disassembled, the structure of the internal components is relatively complicated, and the user cannot effectively clean the cup lid. During daily use, a large amount of dust and dirt will accumulate in the cup lid, which is easy to breed bacteria, making the double-drink cup unhygienic to use and posing certain hidden dangers to the user's health. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a detachable and washable double-drink coffee cup, which solves the problems that the traditional double-drink cup is not convenient to open and is not hygienic to use.

[0005] The technical solution adopted by the utility model is: a detachable and washable double-drink coffee cup, comprising a cup cover and a cup body, the cup cover is connected to the cup body, the cup cover comprises an upper cover body and a lower cover body, the lower cover body is provided with a direct drinking port and a straw port, the upper cover body is provided with a first sealing block and a second sealing block, the first sealing block is used to block the straw port, the second sealing block is used to block the direct drinking port, the outer side wall of the lower cover body is provided with a sliding track, the inner side wall of the upper cover body is provided with a positioning protrusion corresponding to the sliding track, the positioning protrusion is slidably connected to the sliding track, and the side wall of the sliding track is provided with an avoidance notch for the positioning protrusion to pass through.

[0006] Through the above technical scheme, the upper cover body is driven to rotate, and the positioning protrusion slides in the sliding track. When the first sealing block is separated from the straw opening and the second sealing block is disengaged from the direct drinking opening, the user can use the direct drinking opening or the straw opening to drink water, and rotate the upper cover body again until the first sealing block blocks the straw opening and the second sealing block blocks the direct drinking opening. At this time, the cup cover is closed; the user only needs to rotate the upper cover body to open the cup cover to drink water, making the double drinking cup very convenient to use; the cup cover is assembled from the upper cover body and the lower cover body, and the user can disassemble the cup cover very conveniently and clean the upper cover body and the lower cover body separately, so that the cup cover can be cleaned in time after use, which greatly improves the hygiene of the double drinking cup and makes it more hygienic for users to drink.

[0007] Furthermore, the number of the sliding tracks on the lower cover body is two, the two sliding tracks are symmetrically arranged on the lower cover body, the two sliding tracks are both provided with avoidance notches, and the number of the positioning protrusions in the upper cover body is two.

[0008] Through the above technical solution, the symmetrically arranged sliding tracks make the force on the upper cover body more balanced when it is installed on the lower cover body, and the overall stability is more stable; the symmetrical arrangement of the positioning protrusions and the avoidance notches makes it more convenient to install the upper cover body on the lower cover body.

[0009] Furthermore, a first limiting protrusion is provided in the sliding track, the first limiting protrusion is close to one end of the sliding track, and the first limiting protrusion and the end of the sliding track form a first clamping position; when the positioning protrusion slides to the first clamping position, the first sealing block blocks the straw opening, and the second sealing block blocks the direct drinking opening.

[0010] Through the above technical solution, the user rotates the upper cover body until the positioning protrusion slides to the first locking position, the first sealing block blocks the straw opening, and the second sealing block blocks the direct drinking opening. At this time, the cup cover is in a closed state; the user can close the cup cover, making it very convenient to close the cup cover.

[0011] Furthermore, a second limiting protrusion is also provided in the sliding track, the first limiting protrusion and the second limiting protrusion are respectively close to the two ends of the sliding track, and the second limiting protrusion and the end of the sliding track form a second clamping position; when the positioning protrusion slides to the second clamping position, the first sealing block and the straw mouth are disengaged, and the second sealing block and the direct drinking mouth are separated from each other.

[0012] Through the above technical solution, the user rotates the upper cover body until the positioning protrusion slides to the second locking position, the first sealing block and the straw opening are disengaged, and the second sealing block and the direct drinking opening are separated from each other. At this time, the cup cover is in an open state; the user can open the cup cover, making it very convenient to open the cup cover.

[0013] Furthermore, the height of the sliding channel gradually increases on the path of transition from the first locking position to the second locking position. When the second sealing block and the direct drinking port are separated, the height of the second sealing block tends to shift upward; when the second sealing block blocks the direct drinking port, the height of the second sealing block tends to shift downward.

[0014] Through the above-mentioned technical solution, when the user rotates the upper cover body to the first locking position, the height of the second sealing block gradually shifts upward, so that the second sealing block and the direct drinking port can be better separated; when the user rotates the upper cover body to the second locking position, the height of the second sealing block gradually shifts downward, so that the second sealing block seals the direct drinking port more tightly.

[0015] Furthermore, the maximum rotation angle of the upper cover body on the lower cover body is 90 degrees.

[0016] Through the above technical solution, the first sealing block and the second sealing block of the upper cover body are kept as far away from the direct drinking port and the straw port as possible, thereby avoiding obstruction to the user's drinking action and significantly improving the user's user experience.

[0017] Furthermore, a first mark is provided on the outer side wall of the upper cover body, and a second mark is provided on the outer side wall of the lower cover body corresponding to the first mark, and when the first mark and the second mark are aligned with each other, the avoidance notch and the positioning protrusion are butted against each other.

[0018] Through the above technical solution, when assembling the cup cover, it is only necessary to align the first mark and the second mark with each other to allow the positioning protrusion and the avoidance notch to dock, so that the positioning protrusion can pass through the avoidance notch, and the upper cover body can be very conveniently installed in the sliding track.

[0019] Furthermore, a mounting groove and a positioning groove are provided on the upper cover body, the first sealing block is embedded in the mounting groove, and the second sealing block is clamped in the positioning groove.

[0020] Through the above technical solution, the arrangement of the installation groove and the positioning groove makes the first sealing block and the second sealing block installed on the upper cover body very firm, thus avoiding the situation of falling off during use.

[0021] Furthermore, the lower cover body is provided with a baffle, the upper cover body is provided with an annular groove corresponding to the baffle, and the annular groove is engaged with the baffle.

[0022] Through the above technical solution, when assembling the cup cover, the cup cover can be assembled by fitting the annular groove of the upper cover body and the enclosure of the lower cover body, which makes the production and assembly in the factory very convenient, and the fitting of the upper cover body and the lower cover body also makes the cup cover as a whole very stable.

[0023] Furthermore, a positioning hole is provided on the upper cover body, a sealing plug and a mounting hole are provided on the lower cover body, the sealing plug is connected to the mounting hole, a tea strainer is installed in the mounting hole, the sealing plug is used to seal the tea strainer, and the positioning hole and the sealing plug are adapted to each other.

[0024] Through the above technical solution, the positioning hole and the sealing plug are adapted so that when the upper cover body is installed, the upper cover body can be positioned only by making the positioning hole and the sealing plug of the lower cover body correspond to each other, making the assembly of the cup cover very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a cross-sectional view of the utility model;

[0028] Figure 3 It is an exploded view of the utility model;

[0029] Figure 4 This is one of the schematic diagrams of the upper cover structure of the utility model;

[0030] Figure 5 This is the second schematic diagram of the upper cover structure of the utility model;

[0031] Figure 6 This is one of the schematic diagrams of the lower cover structure of the utility model;

[0032] Figure 7 This is the second schematic diagram of the lower cover structure of the utility model;

[0033] The utility model number information is as follows:

[0034] 1. Cup cover; 2. Cup body; 3. Upper cover body; 4. Lower cover body; 5. First sealing block; 6. Second sealing block; 7. Direct drinking port; 8. Straw port; 9. Sliding track; 901. First limiting protrusion; 902. Second limiting protrusion; 10. Positioning protrusion; 11. Avoidance gap; 12. First clamping position; 13. Second clamping position; 14. First mark; 15. Second mark; 16. Installation groove; 17. Positioning groove; 18. Baffle; 19. Annular groove; 20. Positioning hole; 21. Sealing plug; 22. Tea strainer; 23. Installation hole;

[0035] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0039] See also Figure 1 to Figure 7As shown, a detachable and washable double-drink coffee cup includes a cup cover 1 and a cup body 2, the cup cover 1 and the cup body 2 are connected, the cup cover 1 includes an upper cover body 3 and a lower cover body 4, the lower cover body 4 is provided with a direct drinking port 7 and a straw port 8, the upper cover body 3 is provided with a first sealing block 5 and a second sealing block 6, the first sealing block 5 is used to block the straw port 8, and the second sealing block 6 is used to block the direct drinking port 7, the outer side wall of the lower cover body 4 is provided with a sliding track 9, the inner side wall of the upper cover body 3 is provided with a positioning protrusion 10 corresponding to the sliding track 9, the positioning protrusion 10 is slidably connected to the sliding track 9, and the side wall of the sliding track 9 is provided with an avoidance notch 11 for the positioning protrusion 10 to pass through. The upper cover body 3 is driven to rotate, and the positioning protrusion 10 slides in the sliding track 9. When the first sealing block 5 and the straw opening 8 are separated, and the second sealing block 6 and the direct drinking opening 7 are disengaged, the user can use the direct drinking opening 7 or the straw opening 8 to drink water, and the upper cover body 3 is rotated again until the first sealing block 5 blocks the straw opening 8 and the second sealing block 6 blocks the direct drinking opening 7. At this time, the cup cover 1 is closed; the user only needs to rotate the upper cover body 3 to open the cup cover 1 to drink water, making the double drinking cup very convenient to use; the cup cover 1 is assembled from the upper cover body 3 and the lower cover body 4, and the user can disassemble the cup cover 1 very conveniently and clean the upper cover body 3 and the lower cover body 4 respectively, so that the cup cover 1 can be cleaned in time after use, which greatly improves the hygiene of the double drinking cup and makes it more hygienic for the user to drink.

[0040] Preferably, the first sealing block 5 and the second sealing block 6 are made of food grade silicone.

[0041] See also Figure 1 , 2 As shown in FIGS. 3, 6 and 7, there are two sliding rails 9 on the lower cover 4, and the two sliding rails 9 are symmetrically arranged on the lower cover 4. Both sliding rails 9 are provided with avoidance notches 11, and there are two positioning protrusions 10 in the upper cover 3. The symmetrically arranged sliding rails 9 make the force on the upper cover 3 more balanced when it is installed on the lower cover 4, and the overall structure is more stable; the symmetrical arrangement of the positioning protrusions 10 and the avoidance notches 11 makes it more convenient to install the upper cover 3 on the lower cover 4.

[0042] See also Figure 6 , 7 As shown, a first limiting protrusion 901 is provided in the sliding track 9, and the first limiting protrusion 901 is close to one end of the sliding track 9, and the first limiting protrusion 901 and the end of the sliding track 9 form a first clamping position 12; when the positioning protrusion 10 slides to the first clamping position 12, the first sealing block 5 blocks the straw opening 8, and the second sealing block 6 blocks the direct drinking opening 7. The user rotates the upper cover 3, and when the positioning protrusion 10 slides to the first clamping position 12, the first sealing block 5 blocks the straw opening 8, and the second sealing block 6 blocks the direct drinking opening 7, and the cup cover 1 is in a closed state at this time; the user can close the cup cover 1, making it very convenient to close the cup cover 1.

[0043] See also Figure 6 , 7 As shown, a second limiting protrusion 902 is also provided in the sliding track 9, the first limiting protrusion 901 and the second limiting protrusion 902 are respectively close to the two ends of the sliding track 9, and the second limiting protrusion 902 and the end of the sliding track 9 form a second clamping position 13; when the positioning protrusion 10 slides to the second clamping position 13, the first sealing block 5 and the straw mouth 8 are disengaged, and the second sealing block 6 and the direct drinking mouth 7 are separated from each other. The user rotates the upper cover body 3, and when the positioning protrusion 10 slides to the second clamping position 13, the first sealing block 5 and the straw mouth 8 are disengaged, and the second sealing block 6 and the direct drinking mouth 7 are separated from each other, and the cup cover 1 is in an open state at this time; the user can open the cup cover 1, making it very convenient to open the cup cover 1.

[0044] See also Figure 6 , 7 As shown, the height of the sliding track 9 gradually increases on the path from the first engaging position 12 to the second engaging position 13. When the second sealing block 6 and the direct drinking port 7 are separated, the height of the second sealing block 6 tends to shift upward; when the second sealing block 6 blocks the direct drinking port 7, the height of the second sealing block 6 tends to shift downward. When the user rotates the upper cover 3 to the first engaging position 12, the height of the second sealing block 6 gradually shifts upward, so that the second sealing block 6 and the direct drinking port 7 can be better separated; when the user rotates the upper cover 3 to the second engaging position 13, the height of the second sealing block 6 gradually shifts downward, so that the second sealing block 6 blocks the direct drinking port 7 more tightly.

[0045] See also Figure 1 to Figure 3 As shown, the maximum rotation angle of the upper cover 3 on the lower cover 4 is 90 degrees. The first sealing block 5 and the second sealing block 6 of the upper cover 3 are kept as far away from the drinking port 7 and the straw port 8 as possible to avoid hindering the user's drinking action, which significantly improves the user's user experience.

[0046] See also Figure 1 , 4 As shown in Figures 5, 6, and 7, a first mark 14 is provided on the outer wall of the upper cover body 3, and a second mark 15 is provided on the outer wall of the lower cover body 4 corresponding to the first mark 14. When the first mark 14 and the second mark 15 are aligned with each other, the avoidance notch 11 and the positioning protrusion 10 are butted. When assembling the cup cover 1, it is only necessary to align the first mark 14 and the second mark 15 with each other to allow the positioning protrusion 10 to be butted with the avoidance notch 11, so that the positioning protrusion 10 can pass through the avoidance notch 11, so that the upper cover body 3 can be very conveniently installed in the sliding track 9.

[0047] See also Figure 1 to Figure 5As shown, the upper cover body 3 is provided with a mounting groove 16 and a positioning groove 17, the first sealing block 5 is embedded in the mounting groove 16, and the second sealing block 6 is clamped in the positioning groove 17. The arrangement of the mounting groove 16 and the positioning groove 17 makes the first sealing block 5 and the second sealing block 6 installed on the upper cover body 3 very firm, avoiding the situation of falling off during use.

[0048] See also Figure 1 to Figure 3 As shown, the lower cover body 4 is provided with a baffle 18, and the upper cover body 3 is provided with an annular groove 19 corresponding to the baffle 18, and the annular groove 19 and the baffle 18 are engaged. When assembling the cup cover 1, the cup cover 1 can be assembled by engaging the annular groove 19 of the upper cover body 3 with the baffle 18 of the lower cover body 4, which makes the production and assembly in the factory very convenient, and the mutual engagement of the upper cover body 3 and the lower cover body 4 also makes the cup cover 1 as a whole very stable.

[0049] See also Figure 1 to Figure 7 As shown, the upper cover body 3 is provided with a positioning hole 20, and the lower cover body 4 is provided with a sealing plug 21 and a mounting hole 23. The sealing plug 21 is connected to the mounting hole 23, and a tea strainer 22 is installed in the mounting hole 23. The sealing plug 21 is used to block the tea strainer 22, and the positioning hole 20 and the sealing plug 21 are adapted. The positioning hole 20 and the sealing plug 21 are adapted so that when the upper cover body 3 is installed, the positioning of the upper cover body 3 can be completed by only making the positioning hole 20 correspond to the sealing plug 21 of the lower cover body 4, so that the assembly of the cup cover 1 is very convenient.

[0050] When the utility model is in use, the user drives the upper cover body 3 to rotate, and the positioning protrusion 10 slides in the sliding track 9. When the first sealing block 5 and the straw opening 8 are separated, and the second sealing block 6 and the direct drinking opening 7 are disengaged, the user can use the direct drinking opening 7 or the straw opening 8 to drink water; the upper cover body 3 is rotated again until the first sealing block 5 blocks the straw opening 8 and the second sealing block 6 blocks the direct drinking opening 7, and the cup cover 1 is closed.

[0051] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A detachable and washable double-drink coffee cup, comprising a cup cover (1) and a cup body (2), wherein the cup cover (1) and the cup body (2) are connected, the cup cover (1) comprises an upper cover body (3) and a lower cover body (4), and the lower cover body (4) is provided with a direct drinking port (7) and a straw port (8), characterized in that: The upper cover body (3) is provided with a first sealing block (5) and a second sealing block (6), the first sealing block (5) is used to seal the straw opening (8), and the second sealing block (6) is used to seal the direct drinking opening (7); the outer wall of the lower cover body (4) is provided with a sliding track (9), the inner wall of the upper cover body (3) is provided with a positioning protrusion (10) corresponding to the sliding track (9), the positioning protrusion (10) and the sliding track (9) are slidably connected, and the side wall of the sliding track (9) is provided with an avoidance notch (11) for the positioning protrusion (10) to pass through.

2. The detachable and washable double-drink coffee cup according to claim 1, characterized in that: The number of the sliding rails (9) on the lower cover body (4) is two, the two sliding rails (9) are symmetrically arranged on the lower cover body (4), the two sliding rails (9) are both provided with avoidance notches (11), and the number of the positioning protrusions (10) in the upper cover body (3) is two.

3. A detachable and washable double-drink coffee cup according to claim 1 or 2, characterized in that: A first limiting protrusion (901) is provided in the sliding track (9), the first limiting protrusion (901) is close to one end of the sliding track (9), and the first limiting protrusion (901) and the end of the sliding track (9) form a first clamping position (12); when the positioning protrusion (10) slides to the first clamping position (12), the first sealing block (5) blocks the straw opening (8), and the second sealing block (6) blocks the direct drinking opening (7).

4. The detachable and washable double-drink coffee cup according to claim 3, characterized in that: A second limiting protrusion (902) is also provided in the sliding track (9); the first limiting protrusion (901) and the second limiting protrusion (902) are respectively close to the two ends of the sliding track (9); the second limiting protrusion (902) and the end of the sliding track (9) form a second locking position (13); when the positioning protrusion (10) slides to the second locking position (13), the first sealing block (5) and the straw opening (8) are out of contact, and the second sealing block (6) and the direct drinking opening (7) are separated from each other.

5. The detachable and washable double-drink coffee cup according to claim 4, characterized in that: The height of the sliding track (9) gradually increases on the path from the first locking position (12) to the second locking position (13); when the second sealing block (6) and the direct drinking port (7) are separated, the height of the second sealing block (6) tends to shift upward; when the second sealing block (6) blocks the direct drinking port (7), the height of the second sealing block (6) tends to shift downward.

6. A detachable and washable double-drink coffee cup according to claim 1, 2, 4 or 5, characterized in that: The maximum rotation angle of the upper cover body (3) on the lower cover body (4) is 90 degrees.

7. A detachable and washable double-drink coffee cup according to claim 1, 2, 4 or 5, characterized in that: A first mark (14) is arranged on the outer wall of the upper cover body (3), and a second mark (15) is arranged on the outer wall of the lower cover body (4) corresponding to the first mark (14). When the first mark (14) and the second mark (15) are aligned with each other, the avoidance notch (11) and the positioning protrusion (10) are butted against each other.

8. The detachable and washable double-drink coffee cup according to claim 7, characterized in that: The upper cover body (3) is provided with a mounting groove (16) and a positioning groove (17); the first sealing block (5) is embedded in the mounting groove (16), and the second sealing block (6) is clamped in the positioning groove (17).

9. The detachable and washable double-drink coffee cup according to claim 8, characterized in that: The lower cover body (4) is provided with a baffle (18), and the upper cover body (3) is provided with an annular groove (19) corresponding to the baffle (18), and the annular groove (19) and the baffle (18) are engaged with each other.

10. A detachable and washable double-drink coffee cup according to claim 1 or 2 or 4 or 5 or 8 or 9, characterized in that: The upper cover body (3) is provided with a positioning hole (20), and the lower cover body (4) is provided with a sealing plug (21) and a mounting hole (23); the sealing plug (21) and the mounting hole (23) are connected; a tea strainer (22) is installed in the mounting hole (23); the sealing plug (21) is used to seal the tea strainer (22); and the positioning hole (20) and the sealing plug (21) are adapted to fit.