Quick-opening cup

Abstract

The utility model belongs to the technical field of cups, and particularly relates to a quick-opening cup which comprises a cup body and a cup cover arranged on the cup body, a boss part and a step part are respectively arranged on the inner wall of a cup opening of the cup body in a protruding mode, a sealing ring is arranged at the bottom of the cup cover, a control assembly is arranged in the cup cover, and the control assembly comprises a movably-arranged push switch, at least one locking piece and a first elastic piece. The lower end of the cup cover is provided with a lock catch hole matched with the locking piece, the lower end of the pressing switch abuts against or is connected with the locking piece and can drive the locking piece to retract into the lock catch hole, one end of the first elastic piece abuts against or is connected with the inner end of the locking piece and can push the locking piece to stretch out of the lock catch hole, and the side face of the lower end of the cup cover is sleeved with a locking ring. The locking ring is movably arranged above the locking piece, an abutting part is further arranged at the upper end of the locking ring, a second elastic piece is further arranged between the abutting part and the cup cover, a limiting part is further annularly arranged on the cup cover, the limiting part can limit the locking ring to be separated from the cup cover downwards, and the quick-opening cup is simple in structure and easy to operate and can be opened through the fingers of a single hand.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cup technical field, especially point to a quick open cup. BACKGROUND

[0002] Cup is the container that people widely use, is used for containing various drinks, the cup on market and cup body are closely connected through thread, through this thread connection fixed cup cover on the cover of cup body, although simple structure and reliable connection, but need user to operate through the cooperation between both hands to take down cup cover to pour water, therefore, there appears some threadless cup on market, but the design of threadless sealing performance first needs to ensure enough, usually manufacturer will be in cup cover through the design transmission spare part, make cup cover not to fall off while also realize sealing effect, but too many spare parts and operation steps will have some improvement to cost, for installation will be more complicated, and in the process of opening cover, still need more finger auxiliary both sides open cover button, make its internal locking piece realize unlocking through the cooperation of other spare parts movement, therefore, present need a kind of operation simple, through single hand finger can open cover quick open cup. SUMMARY

[0003] The utility model aims at providing a kind of quick open cup, which is simple in structure and easy to operate, and can be opened by single hand finger.

[0004] The utility model is realized as follows:

[0005] A quick-opening cup includes a cup body and a lid attached to the cup body. The inner wall of the cup body's rim has a protruding boss and a stepped portion, with the boss positioned above the stepped portion. A sealing ring is located at the bottom of the lid; when the lid is closed on the cup body, the sealing ring abuts against the stepped portion. A control component is located inside the lid, comprising a movable push switch, at least one locking element, and a first elastic element. A locking hole adapted to the locking element is formed at the lower end of the lid, with the locking element partially outside the locking hole. The lower end of the push switch abuts or connects to the locking element and can retract the locking element into the locking hole. One end of the first elastic element abuts or connects to the inner end of the locking element and can push the locking element out of the locking hole. Driving the push switch, the locking element retracts into the locking hole and disengages from the lower surface of the boss, allowing the lid to open upwards. A locking ring is also fitted on the lower side of the cup lid. The locking ring is movably positioned above the locking member. The upper end of the locking ring is also provided with an abutment. A second elastic member is provided between the abutment and the cup lid. When the lid needs to be opened, the push switch is driven to retract the locking member into the locking hole. At this time, the locking ring can move downward relative to the cup lid through the elastic force of the second elastic member and close the locking hole. At this time, the locking member is restricted from extending out of the locking hole, thus completing the opening of the lid. When the cup lid is moved downward relative to the cup body, the cup mouth of the cup body abuts against the lower surface of the abutment. If the cup lid is pressed down further, the locking ring moves upward relative to the cup lid and disengages from the locking hole. At this time, the locking member is released from restriction, extends out of the locking hole, and abuts against the lower surface of the protrusion, thus completing the closing of the lid. A limiting part is also provided on the cup lid. The limiting part can restrict the locking ring from disengaging downward from the cup lid.

[0006] Furthermore, the lower end of the push switch is provided with a driving slope, and the locking member is provided with a sliding slope. When the push switch moves downward, the sliding slope on the locking member is squeezed downward by the driving slope, thereby retracting into the locking hole. The lower surface of the locking member is also provided with an abutting slope. When the abutting slope abuts against the upper surface of the boss, the locking member can retract into the locking hole through the abutting slope.

[0007] Furthermore, the cup lid has an upward-facing mounting post inside, and a vent hole penetrating the cup lid is provided in the middle of the mounting post. A venting component is movably installed inside the vent hole. The upper end of the venting component abuts against the lower surface of the push switch, and the lower end is located outside the vent hole and can close the vent hole. When the push switch moves downward, the venting component moves downward to open the vent hole. A vent sealing component is also provided between the lower end of the venting component and the vent hole. An venting spring is sleeved on the venting component.

[0008] Furthermore, the mounting post is provided with a limiting member, the mounting post is provided with a groove, and the limiting member is provided with a protrusion. The limiting member is sleeved on the mounting post and is engaged with the groove through the protrusion. At this time, the lower surface of the limiting member can abut against the upper surface of the locking member and restrict the locking member from moving upward.

[0009] Furthermore, the cup lid is provided with several guide parts, and a guide space is formed between adjacent guide parts. The locking member is located in the guide space and can move within the guide space.

[0010] Furthermore, the inner end of the locking member is provided with a guide groove, and a guide post is provided in the guide groove. The first elastic member is provided on the guide post and abuts against the mounting post. The first elastic member is a guide spring, and the second elastic member is a locking spring.

[0011] Furthermore, the inner wall of the cup lid is provided with several vertical positioning parts, and a positioning space is formed between adjacent positioning parts. The outer wall of the push switch is provided with a positioning strip that is compatible with the positioning part. When the push switch is installed inside the cup lid, the positioning strip is located in the positioning space.

[0012] Furthermore, the cup lid includes a drive cover and a lower cover, the drive cover is connected to the upper end of the lower cover, the sealing ring is located at the lower end of the lower cover, and the locking hole is opened on the lower cover.

[0013] Furthermore, the drive cover has an internal thread, and the upper end of the lower cover has an external thread. The drive cover is threadedly connected to the external thread on the lower cover through the internal thread. The upper surface of the drive cover also has a handle.

[0014] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0015] This invention relates to a quick-opening cup that can be opened with just one finger. The inner wall of the cup body and rim features a raised section and a stepped section. A sealing ring is located at the bottom of the lid. When the lid is closed, the sealing ring abuts against the stepped section. This design effectively prevents liquid leakage, ensuring the cup's sealing performance and preventing spills, thus meeting the needs of users in various scenarios. The control components employ a combination of a push-button switch, a locking element, and a first elastic element. Users can easily open the lid by pushing the push-button switch with one finger, causing the locking element to retract into the locking hole. The operation is simple and convenient. The locking element's cooperation with the raised section ensures that when the lid is closed, the locking element extends and abuts against the lower surface of the raised section, firmly restricting the lid's opening and preventing accidental spills, thus improving safety. To open the lid, press the push-button switch, causing the locking element to move into the locking hole. At this time, the second elastic element pushes the lid upwards, locking... The locking ring closes the locking hole downwards and restricts the extension of the locking component. At this point, the operator does not need to apply force; the lid can be lifted directly upwards with one hand, avoiding the need for fingers to continuously press the switch. Without the locking ring, the operator would need two hands to open the lid, otherwise the locking component would reset, continuing to restrict the lid from opening. This function prevents the locking component from accidentally extending and causing inconvenience or damage when the lid is open. It also prevents dirt from entering the lid through the locking hole and restricts the locking component from being subjected to external impacts unnecessarily. This helps extend the lifespan of the locking component and the entire lid structure, ensuring that all functions of the cup always operate normally. When the lid is closed with the cup body, the locking ring is pushed upwards at the rim of the cup body, releasing the lock from the locking hole and allowing the locking component to extend and abut against the protrusion, automatically locking the lid without any additional user operation, thus improving the user experience. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a cross-sectional view of the cup lid of this utility model when it is locked.

[0018] Figure 3 This is a cross-sectional view of the cup lid of this utility model when it can be opened.

[0019] Figure 4 This is an exploded view of the cup lid of this utility model.

[0020] Figure 5 This is a perspective view of the control component of this utility model.

[0021] Figure 6 This is a front view of the locking ring of this utility model that closes the locking hole.

[0022] Figure 7This is a perspective view of the locking ring of this utility model closing the locking hole.

[0023] Figure 8 This is a schematic diagram of the interior of the cup lid after the drive cover has been removed.

[0024] Figure 9 This is a schematic diagram of the interior of the cup lid after removing the drive cover and control components of this utility model.

[0025] Figure 10 This is a schematic diagram of the locking component of this utility model inside the lower cover.

[0026] Figure 11 This is an internal schematic diagram of the lower cover of this utility model.

[0027] The meaning of the labels in the diagram:

[0028] 1-Cup body; 2-Cup lid; 3-Protrusion; 4-Step; 5-Sealing ring; 6-Drive cover; 7-Lower cover; 8-Control assembly; 9-Push switch; 10-Locking element; 11-First elastic element; 12-Lock hole;

[0029] 13-Limiting part; 14-Locking ring; 15-Abutting part; 16-Second elastic element; 17-Driving inclined surface;

[0030] 18-Sliding ramp; 19-Abutting ramp; 20-Mounting column; 21-Exhaust hole; 22-Exhaust component;

[0031] 23-Exhaust seal; 24-Exhaust spring; 25-Limiting element; 26-Guide part; 27-Guide space; 28-Guide post; 29-Positioning part; 30-Positioning space; 31-Positioning strip; 32-Handle. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments:

[0033] A quick-opening cup includes a cup body 1 and a cup lid 2 disposed on the cup body 1. The inner wall of the cup body 1 has a protruding boss 3 and a stepped portion 4, with the boss 3 positioned above the stepped portion 4. A sealing ring 5 is provided at the bottom of the cup lid 2. When the cup lid 2 is closed onto the cup body 1, the sealing ring 5 abuts against the stepped portion 4. A control component 8 is provided inside the cup lid 2. The control component 8 includes a movable push-button switch 9, at least one locking element 10, and a first elastic element 11. The lower end of the cup lid 2 has an opening... A locking hole 12 is provided to match the locking member 10. Part of the locking member 10 is located outside the locking hole 12. The lower end of the press switch 9 abuts or connects to the locking member 10, and can drive the locking member 10 to retract into the locking hole 12. One end of the first elastic member 11 abuts or connects to the inner end of the locking member 10, and can push the locking member 10 out of the locking hole 12, driving the press switch 9 to retract into the locking hole 12 and disengage from the lower surface of the boss portion 3. At this time, the cup lid 2 can be opened upwards. A locking ring 14 is also fitted on the lower side of the lid 2. The locking ring 14 is movably positioned above the locking member 10. The upper end of the locking ring 14 is also provided with an abutment part 15. A second elastic member 16 is also provided between the abutment part 15 and the lid 2. When it is necessary to open the lid, the push switch 9 is driven to move the locking member 10 back into the latch hole 12. At this time, the locking ring 14 can move downward relative to the lid 2 through the elastic force of the second elastic member 16 and close the latch hole 12. At this time, the locking member 10 is restricted from extending out of the latch. Hole 12, thus completing the opening of the lid. When the cup lid 2 is moved downward relative to the cup body 1, the cup mouth of the cup body 1 abuts against the lower surface of the abutment part 15. As the cup lid 2 is pressed down, the locking ring 14 moves upward relative to the cup lid 2 and disengages from the locking hole 12. At this time, the locking member 10 is released from its restriction, extends out of the locking hole 12, and abuts against the lower surface of the boss part 3, thus completing the closing of the lid. The cup lid 2 is also provided with a limiting part 13, which can restrict the locking ring 14 from disengaging downward from the cup lid 2.

[0034] This invention relates to a quick-opening cup that can be opened with one finger. The inner wall of the cup body 1 has a protrusion 3 and a step 4. The bottom of the lid 2 has a sealing ring 5. When the lid 2 is closed on the cup body 1, the sealing ring 5 abuts against the step 4. This structural design effectively prevents liquid leakage, ensures the cup's sealing performance, and prevents beverages from spilling, meeting the user's needs for using the cup in different scenarios. The control component 8 adopts a combination design of a push switch 9, a locking element 10, and a first elastic element 11, etc. The user can drive the push switch with one finger. Pressing switch 9 retracts the locking element 10 into the locking hole 12, easily opening the cup lid 2. The operation is simple and convenient. The design of the locking element 10 and the protrusion 3 ensures that when the cup lid 2 is closed, the locking element 10 extends and abuts against the lower surface of the protrusion 3, firmly preventing the cup lid 2 from opening and causing beverage spillage, thus improving safety. When it is necessary to open the cup lid 2, press the push switch 9 to move the locking element 10 into the locking hole 12. At this time, the second elastic element 16 pushes the cup lid 2 upwards, locking... The locking ring 14 closes the latching hole 12 downwards and restricts the extension of the locking member 10. At this time, the operator does not need to apply force and can lift the cup lid 2 directly upwards with one hand, avoiding the need for the fingers to continuously drive and press the switch 9. Without the locking ring 14, the operator would need two hands to open it, otherwise the locking member 10 would reset and continue to restrict the opening of the cup lid 2. This function can prevent the locking member 10 from accidentally extending and causing inconvenience or damage when the cup lid 2 is open, and also prevents dirt from entering the cup lid 2 through the latching hole 12. Furthermore, restricting the locking member 10 from extending out of the locking hole 12 can prevent the locking member 10 from being subjected to external impacts under unnecessary circumstances. This helps to extend the service life of the locking member 10 and the entire cup lid 2 structure, ensuring that all functions of the cup always operate normally. When the cup lid 2 is closed with the cup body 1, the locking ring 14 is pushed upward at the mouth of the cup body 1 to release the closure of the locking hole 12, allowing the locking member 10 to extend and abut against the boss part 3, automatically completing the locking of the cup lid 2 without requiring any additional operation from the user, thus improving the user experience.

[0035] Preferably, the lower end of the push switch 9 is provided with a driving inclined surface 17, and the locking member 10 is provided with a sliding inclined surface 18. When the push switch 9 moves downward, the sliding inclined surface 18 on the locking member 10 is squeezed downward by the driving inclined surface 17, thereby retracting into the locking hole 12. The lower surface of the locking member 10 is also provided with an abutting inclined surface 19. When the abutting inclined surface 19 abuts against the upper surface of the boss 3, the locking member 10 can retract into the locking hole 12 through the abutting inclined surface 19, reducing the opening resistance. The user only needs to press the switch 9 downward, and by utilizing the interaction between the driving inclined surface 17 and the sliding inclined surface 18, the locking member 10 can be easily retracted, thereby opening the cup lid 2. Even users with less strength can operate it conveniently, improving the convenience of opening the cup lid 2. The tight cooperation between the driving inclined surface 17 and the sliding inclined surface 18 can ensure that the locking member 10 can accurately retract into the locking hole 12 when the switch 9 is pressed. This precise motion control improves the stability and reliability of the entire locking system, reduces locking failures caused by misoperation or loose parts, and ensures the safety of the cup lid 2 during normal use. The abutting slope 19 helps the cup lid 2 close the cup body 1. During the downward closing process, the abutting slope 19 first touches the boss part 3. At this time, the locking part 10 retracts inward into the locking hole 12. At this time, the cup mouth of the cup body 1 abuts against the abutting part 15 on the retraction ring to restrict the downward movement of the locking ring 14. Until the lid is closed, the locking part 10 extends out and abuts against the lower surface of the boss part 3. At this time, the cup lid 2 cannot be opened.

[0036] Preferably, the cup lid 2 has an upward-facing mounting post 20 inside, and a vent hole 21 penetrating the cup lid 2 is provided in the middle of the mounting post 20. A venting component 22 is movably provided inside the vent hole 21. The upper end of the venting component 22 abuts against the lower surface of the press switch 9, and the lower end is located outside the vent hole 21 and can close the vent hole 21. When the press switch 9 moves downward, the venting component 22 moves downward to open the vent hole 21. A venting seal 23 is also provided between the lower end of the venting component 22 and the vent hole 21. A venting spring 24 is sleeved on the venting component 22. When the external force of the press switch 9 disappears, the venting spring 24 can use its own elastic force to make the venting component 22 quickly return to the initial position, thereby automatically closing the vent hole 21 and ensuring that the system is in a sealed state when venting is not required. At the same time, this function can also prevent the cup lid 2 from suddenly opening when the temperature of the water in the cup body 1 is too high, which could cause the cup lid 2 to pop open and injure the operator.

[0037] Preferably, the mounting post 20 is provided with a limiting member 25. The mounting post 20 is provided with a groove, and the limiting member 25 is provided with a protrusion. The limiting member 25 is sleeved on the mounting post 20 and is engaged with the groove through the protrusion. At this time, the lower surface of the limiting member 25 can abut against the upper surface of the locking member 10 and restrict the locking member 10 from moving upward, preventing the locking member 10 from moving after it retracts from the locking hole 12 into the cup lid 2.

[0038] Preferably, the cup lid 2 is provided with a plurality of guide portions 26, and a guide space 27 is formed between adjacent guide portions 26. The locking member 10 is disposed within the guide space 27 and can move within the guide space 27, serving as a guide to ensure accurate movement direction and prevent the locking member 10 from shaking. The guide space 27 provides lateral support for the locking member 10, effectively limiting the shaking and deviation of the locking member 10 during movement. Especially when the equipment is subjected to external forces such as vibration and impact, the guide portions 26 can constrain the locking member 10, keeping it within the normal range of movement and preventing it from colliding with other components due to shaking, thereby protecting the locking member 10 and other related components from damage and extending the service life of the equipment.

[0039] Preferably, the inner end of the locking member 10 is provided with a guide groove, and a guide post 28 is provided in the guide groove. The first elastic member 11 is provided on the guide post 28 and abuts against the mounting post 20. The first elastic member 11 is a guide spring, and the second elastic member 16 is a locking spring, which plays a guiding role.

[0040] Preferably, the inner wall of the cup lid 2 is provided with a plurality of vertical positioning parts 29, and a positioning space 30 is formed between adjacent positioning parts 29. The outer wall of the push switch 9 is provided with a positioning strip 31 that is adapted to the positioning part. When the push switch 9 is installed in the cup lid 2, the positioning strip 31 is located in the positioning space 30, which restricts the movement of the push switch 9 and prevents the push switch 9 from rotating in the cup lid 2.

[0041] Preferably, the cup lid 2 includes a drive cover 6 and a lower cover 7. The drive cover 6 is connected to the upper end of the lower cover 7. The sealing ring 5 is located at the lower end of the lower cover 7. The locking hole 12 is opened on the lower cover 7, which facilitates the user to disassemble and clean the inside, and also facilitates the manufacturer to assemble.

[0042] Preferably, the drive cover 6 has an internal thread, and the upper end of the lower cover 7 has an external thread. The drive cover 6 is threadedly connected to the external thread on the lower cover 7 through the internal thread. The upper surface of the drive cover 6 is also provided with a handle 32, which makes it easy for the user to carry. The threaded connection allows the operator to disassemble and open the drive cover 6 for cleaning, making disassembly and assembly convenient.

[0043] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A quick-opening cup, comprising a cup body (1) and a cup lid (2) disposed on the cup body (1), wherein the inner wall of the cup mouth of the cup body (1) is provided with a boss portion (3) and a step portion (4), the boss portion (3) being disposed above the step portion (4), and a sealing ring (5) being provided at the bottom of the cup lid (2), wherein when the cup lid (2) is closed on the cup body (1), the sealing ring (5) abuts against the step portion (4), characterized in that, The cup lid (2) is provided with a control component (8), which includes a movable push switch (9), at least one locking member (10), and a first elastic member (11). The lower end of the cup lid (2) is provided with a locking hole (12) adapted to the locking member (10). The locking member (10) is partially located outside the locking hole (12). The lower end of the push switch (9) abuts or connects with the locking member (10) and can drive the locking member (10) to retract into the locking hole (12). One end of the elastic element (11) abuts or connects to the inner end of the locking element (10), and can push the locking element (10) out of the latch hole (12), driving the push switch (9). The locking element (10) can retract into the latch hole (12) and disengage from the lower surface of the boss (3). At this time, the cup lid (2) can be opened upward. The lower side of the cup lid (2) is also fitted with a locking ring (14). The locking ring (14) is movably positioned above the locking element (10). The upper end of the locking ring (14) is also provided with The abutting part (15) and the cup lid (2) are provided with a second elastic element (16). When it is necessary to open the lid, the push switch (9) is driven to drive the locking element (10) to retract into the locking hole (12). At this time, the locking ring (14) can move downward relative to the cup lid (2) through the elastic force of the second elastic element (16) and close the locking hole (12). At this time, the locking element (10) is restricted from extending out of the locking hole (12), thereby completing the opening of the lid and placing the cup lid (2) relative to the cup body (1). When the cup moves downward, the rim of the cup body (1) abuts against the lower surface of the abutment part (15). As the cup lid (2) continues to be pressed down, the locking ring (14) moves upward relative to the cup lid (2) and disengages from the locking hole (12). At this time, the locking member (10) is released from its restriction and extends out of the locking hole (12) and abuts against the lower surface of the boss part (3), thereby completing the closing of the lid. The cup lid (2) is also provided with a limiting part (13), which can restrict the locking ring (14) from disengaging from the cup lid (2) downward.

2. The quick-opening cup according to claim 1, characterized in that: The lower end of the push switch (9) is provided with a driving slope (17), and the locking member (10) is provided with a sliding slope (18). When the push switch (9) moves downward, the sliding slope (18) on the locking member (10) is squeezed downward by the driving slope (17), thereby retracting into the locking hole (12). The lower surface of the locking member (10) is also provided with an abutting slope (19). When the abutting slope (19) abuts against the upper surface of the boss (3), the locking member (10) can retract into the locking hole (12) through the abutting slope (19).

3. A quick-opening cup according to claim 1 or 2, characterized in that: The cup lid (2) has an upward-facing mounting post (20) inside. The middle part of the mounting post (20) has a vent hole (21) that passes through the cup lid (2). A venting component (22) is movably installed inside the vent hole (21). The upper end of the venting component (22) abuts against the lower surface of the push switch (9), and the lower end is located outside the vent hole (21) and can close the vent hole (21). When the push switch (9) moves downward, the venting component (22) moves downward to open the vent hole (21). A venting seal (23) is also provided between the lower end of the venting component (22) and the vent hole (21). A venting spring (24) is sleeved on the venting component (22).

4. A quick-opening cup according to claim 3, characterized in that: The mounting post (20) is provided with a limiting member (25). The mounting post (20) is provided with a groove, and the limiting member (25) is provided with a protrusion. The limiting member (25) is sleeved on the mounting post (20) and is engaged with the groove through the protrusion. At this time, the lower surface of the limiting member (25) can abut against the upper surface of the locking member (10) and restrict the locking member (10) from moving upward.

5. A quick-opening cup according to claim 4, characterized in that: The cup lid (2) is provided with a plurality of guide portions (26), and a guide space (27) is formed between adjacent guide portions (26). The locking member (10) is provided in the guide space (27) and can move within the guide space (27).

6. A quick-opening cup according to claim 5, characterized in that: The inner end of the locking member (10) is provided with a guide groove, and a guide post (28) is provided in the guide groove. The first elastic member (11) is provided on the guide post (28) and abuts against the mounting post (20). The first elastic member (11) is a guide spring, and the second elastic member (16) is a locking spring.

7. A quick-opening cup according to claim 3, characterized in that: The inner wall of the cup lid (2) is provided with several vertical positioning parts (29), and a positioning space (30) is formed between adjacent positioning parts (29). The outer wall of the push switch (9) is provided with a positioning strip (31) that is compatible with the positioning component. When the push switch (9) is installed in the cup lid (2), the positioning strip (31) is located in the positioning space (30).

8. A quick-opening cup according to claim 7, characterized in that: The cup lid (2) includes a drive cover (6) and a lower cover (7). The drive cover (6) is connected to the upper end of the lower cover (7). The sealing ring (5) is located at the lower end of the lower cover (7). The locking hole (12) is opened on the lower cover (7).

9. A quick-opening cup according to claim 8, characterized in that: The drive cover (6) has an internal thread, and the upper end of the lower cover (7) has an external thread. The drive cover (6) is threadedly connected to the external thread on the lower cover (7) through the internal thread. The upper surface of the drive cover (6) is also provided with a handle (32).

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