CN111532059B

CN111532059B - Convenient pen

Info

Publication number: CN111532059B
Application number: CN202010339192.4A
Authority: CN
Inventors: 林宣华
Original assignee: Pingyang Xinxuanhua Stationery Factory
Current assignee: Pingyang Xinxuanhua Stationery Factory
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-08-06
Anticipated expiration: 2040-04-26
Also published as: CN111532059A

Abstract

The invention discloses a convenient pen, which comprises a straight barrel-shaped pen holder and a plurality of pen cores with the same length, wherein the inner parts of two ends of the pen holder are respectively provided with a limiting ring groove, an elastic clamping ring is arranged in each limiting ring groove, each pen core comprises a pen point and a core rod body, the pen point is positioned at the lower end of the core rod body, the core rod body comprises a rod point section connected with the pen point and a limiting section arranged at the upper end of the rod point section, the limiting section is coaxial with the rod point section, the limiting section forms a circle of limiting ring outside the contact surface of the rod point section, the cross section of the limiting section is a regular polygon, and the inner wall of the pen holder is matched with the limiting section in shape and is in clearance fit; the ink accumulation of the pen point is prevented, and the recording and writing efficiency is improved; small office supplies are carried, and the office and study efficiency is improved; the ink quantity preparation work is completed, and the office or study efficiency is improved.

Description

Convenient pen

Technical Field

The invention relates to the technical field of stationery, in particular to a convenient pen.

Background

Nowadays, pens usually comprise a hollow pen holder, a clamping type cylindrical sealing cover at the upper end of the pen holder and a pen point end in threaded connection with the lower end of the pen holder, the refill is inconvenient to replace, the pen point end at the lower end of the pen holder needs to be unscrewed for replacing the refill, and the clamping type cylindrical sealing cover is easy to damage due to extrusion stress when being detached. In the current work, pen inks with different colors are often needed for marking and distinguishing, the pen with multiple colors is inconvenient to carry, if only a refill is carried, the refill is often a thinner one, and the refill is not beneficial to writing due to the smaller diameter of the refill and is easy to leak oil after being bent; the replacement of the pen core is complicated, so that the inconvenience is brought to office documents which need to be distinguished, particularly office documents which are inconvenient to carry when the office is out of business. The existing pens are designed to eject pen cores with different colors in a pressing mode, however, due to the structural relationship of the existing pens, in order to reduce the volume of the pen to finish the manufacture of writing pen cores, the pen cores are inconvenient to fill, and the frequency of replacing the pen cores is high.

The utility model discloses an authorization publication number that discloses in the chinese patent document is CN 205468081U, and the name that the authorization publication is published 2016 8, 17 is a multi-refill water based pen, this application discloses a multi-refill water based pen, including refill, cap, ring baffle, main pen container, outer pen container and pen lid, the inside main pen container that sets up of outer pen container, form refill storage cavity between the inner wall of outer pen container and the outer wall of main pen container for store many refills, outer pen container and main pen container set up with the axle center, the bottom of main pen container sets up ring baffle, and ring baffle's central point puts and sets up written through-hole, and the bottom of main pen container connects the cap, the pen lid is connected to the top of main pen container. The utility model discloses an outer pen container and main pen container cup joint to set up and form refill storage cavity to can store a plurality of refills, can place the refill in the main pen container simultaneously and write. The novel pen core has the disadvantages that the replacement is complicated when the pen core is used, the top cover and the pen cap need to be unscrewed, the replacement is inconvenient, and the efficiency is too low in occasions needing speed marking.

In the prior art, the functions of the pen are not only limited to office writing, but also can be used for diverging thinking and entertaining, the most common pen is rotated by one hand, and the pen is used as an entertainment prop and has a single function obviously.

Disclosure of Invention

Based on the defects of the prior art, the portable pen provided by the invention overcomes the defects that the conventional pen is inconvenient to replace and the multi-color pen is inconvenient to carry, can quickly replace the refill in the portable pen, can finish the carrying and quick writing of the multi-color pen, and improves the learning or office efficiency.

The invention also aims to produce different knocking sounds through the pen core and the pen shell, thereby enriching the entertainment function of the pen.

In order to achieve the above object, the present invention adopts the following technical solutions.

The utility model provides a convenient pen, pen-holder and the refill that a plurality of length equal including straight cylindric, the inside at pen-holder both ends is equipped with spacing annular respectively, the inside of spacing annular is equipped with the elasticity rand, the refill includes nib and core rod body, the nib is located the lower extreme of the core rod body, the core rod body includes the pole point section of being connected with the nib and establishes the spacing section in pole point section upper end, spacing section and pole point section coaxial line and spacing section form the round spacing ring outside the contact surface of pole point section, the cross section of spacing section is regular polygon, the pen-holder inner wall matches and is clearance fit with the shape of spacing section, the length sum of the spacing section of all refills is two spacing annular distances on the pen-holder and adds 0 to 0.9 times single spacing section length, the diameter of the inscribed circle diameter of elasticity rand is less than spacing annular and is greater than the inscribed circle diameter of pen-holder internal diameter, the internal diameter of the one end that pole point section was kept away from to is pole point section outside maximum dimension and adds 0 to 2 millimeters.

The pen point section can extend into the inside of the limiting section of the next section of pen core, the limiting ring limits the depth of the pen point section which is inserted into the limiting section, and the pen point section of the pen core body can slide into the inside of the elastic clamping ring through a structure that the inner wall of the pen holder is in clearance fit with the outer wall of the limiting section, so that a plurality of core rod bodies in the pen holder are connected end to form the pen point section, the tail end of the limiting section is limited by the elastic clamping ring, the core rod bodies can only slide in one direction in the pen holder, the carrying of various color pens can be completed by filling ink with different colors in the core rod bodies, when in quick recording, the pen core is pulled out from one end of the pen holder where the pen point of the core rod bodies is located, and the pen core after being pulled out is plugged into the other end of the pen holder, so that the quick replacement of the pen cores with different colors in the pen core can be completed; the pen core is made into modularized partition, so that the replacement of the pen core can be completed quickly, the time is shortened to 1 second or even shorter, and the stenography efficiency is greatly improved; the single-section refill stretches out of the pen holder, the pen point end of the refill can be held by a hand, the pen holder is used as a limiting section for prolonging the refill, writing is facilitated, a plurality of people can provide pens in offices simultaneously, and the pen is convenient to use and carry.

Preferably, the upper end of the limiting section is provided with a connecting section which is circular, and the inscribed circle of the outer edge of the cross section of the limiting section is a cylindrical surface which is the same as the outer edge of the connecting section. Through linkage segment and elasticity rand cooperation, after the ascending displacement of elasticity rand restriction spacing section axial, inside the linkage segment was embedded into the elasticity rand, the linkage segment supported the elasticity rand, prevented the conquassation deformation of elasticity rand, improved the life of elasticity rand.

Preferably, the cross section of the limiting section is a regular hexagon. The spacing section is regular hexagon, and the inside fit of spacing section and pen-holder, elasticity rand have 4 at least at the strong point of pen-holder inner wall, and pen-holder inner wall can play the effect of stable support to elasticity rand with spacing section cooperation and can stabilize the restriction refill and take place horizontal rotation simultaneously.

Preferably, one end of the limiting section, which is close to the rod tip section, is provided with a transition arc surface which is matched with the rod tip section and gradually reduces in size, and the transition arc surface is provided with a ventilation plane which is tangent to the outer side surface of the rod tip section. The transition cambered surface is matched with the rod tip section, so that a user can hold the pen conveniently, and the comfort of the pen in use is improved; the pole point section is located the inside of spacing section, ventilate the plane and be located the transition cambered surface that is close to with the pole point section and tangent with the lateral surface of pole point section, can be after the pole point section of different core bar bodies and spacing section cooperation, accomplish ventilating in the spacing section, guarantee that the ink in the spacing section can flow smoothly, come the inside atmospheric pressure change speed of spacing section now through ventilating the plane simultaneously, thereby improve the writing smoothness degree of refill, prevent that the front end of refill from long-pending black.

Preferably, a circle of anti-jumping ring groove is arranged on the limiting section of the core rod body, and the anti-jumping ring groove corresponds to the position of the elastic clamping ring at the lower end of the pen holder. The anti-jumping ring groove is matched with the elastic clamping ring, so that the combined core rod body in the pen holder is convenient to limit with the pen holder, and the stability and the comfort of the pen during writing are improved.

Preferably, transition chamfers are arranged on the inner walls of the two ends of the penholder, and transition fillets are arranged on the outer walls of the two ends of the penholder. The transition chamfer is convenient for the core rod body to slide into the pen holder, so that the replacement speed of the pen core is improved; the transition round angle is arranged on the outer wall of the pen holder, so that the use safety of the pen holder is improved, the touch feeling is improved, the stress concentration at two ends of the pen holder is prevented, and the structural safety of the pen holder is improved.

Preferably, different cores are provided with different colored inks including, but not limited to, red, black and blue. The ink with different colors is filled, so that different refills can finish writing with different colors, the quick modification of the pen holder can be finished by changing the sequence of the refills in the pen holder, and the efficiency of shorthand and speed skating is improved.

Preferably, the penholder is internally provided with a mounting rod body, the shape and the length of the mounting rod body are the same as those of the core rod body, a long mounting groove is arranged on the rod wall of the limiting section of the mounting rod body, and a fixing cover matched with the edge of the long mounting groove is arranged outside the long mounting groove. The recording element, the eraser, the ruler plate and the like can be arranged in the installation long groove, and the penholder is modularized through the combination of the installation long groove and the limiting section, so that the pen can play a role in carrying and storing tiny appliances, and the office and school are facilitated.

Preferably, two groups of parallel and opposite internal contact sections are embedded in the outer side of the core rod body, each group of internal contact sections are longitudinally distributed on the side face of the core rod body, the elastic clamping ring comprises two sections of arc-shaped conductive sections, the conductive sections are connected through an insulating connecting section, the internal contact sections are in contact with the conductive sections, a battery is connected between the two sections of conductive sections of the elastic clamping ring at one end of the pen rod through a circuit, and an indicator lamp is connected between the connecting conductive sections of the elastic clamping ring at the other end of the pen rod through a circuit. The battery charges the inner contact section, electrons in the capacitor can be released after the inner contact section is contacted with the conductive section with the indicator lamp at the other end of the penholder, the indicator lamp can briefly give out light, the change of the internal ink volume of the core rod body can cause the change of the internal capacitance of the inner contact section, the ink volume in the core rod body can be judged through the brightness change of the indicator lamp, the ink volume can be qualitatively observed in occasions such as learning and office occasions needing quick recording, the preparation work of the ink volume is made before the use, and the office and learning efficiency is further improved.

Preferably, the limiting section of the core rod body is provided with a plurality of tone rings arranged in parallel with the limiting rings; the cross section of each tone ring is semicircular, the diameters of all the tone rings are different, and the distances between adjacent tone rings are different. The tone rings are matched with the elastic clamping rings to produce knocking sound, because the tone rings have different diameters and different distances, the tone rings can produce sounds with different frequencies, the elastic clamping rings at two ends of the penholder can be used simultaneously, and the sound combination modes of the frequencies are multiple, so that the pen can be used as a knocking instrument, and the entertainment of the pen is improved.

The invention has the following beneficial effects:

1. the pen core is provided with a plurality of sections in the pen holder, the pen core section for writing can be changed by pulling out the pen core and inserting the pen core into the pen holder from the rear, so that the quick replacement of the pen cores with different colors can be completed, the content distinction during quick recording is convenient to complete, and the quick recording efficiency is improved;

2. the ventilation plane of the refill can ensure that the refill connected with the front end of the rod tip section can ventilate smoothly, so that the writing smoothness is improved, the ink output of the refill during writing can be controlled by controlling the size of the ventilation plane, the ink accumulation of the refill is prevented, and the recording and writing efficiency is improved;

3. the pen holder is internally provided with an installation rod body with the same shape and size as the core rod, and small office supplies are carried through an installation long groove in the installation rod body, so that the office and study efficiency is improved;

4. the ink quantity in the refill can be qualitatively judged through the effects of the conductive sections of the clamping rings at the two ends of the pen holder, the battery and the indicating lamp, the preparation work of the ink quantity is completed, and the office or study efficiency is improved;

5. the pen can be used as a percussion instrument, and the entertainment of the pen is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view at B in fig. 1.

Fig. 4 is a schematic structural diagram of the mounting rod body of the embodiment shown in fig. 1.

Fig. 5 is a schematic view of the structure of the elastic collar of the present invention.

Fig. 6 is a schematic structural view of a mounting rod body according to another embodiment of the present invention.

In the figure: transition fillet 101 of pen holder 1, transition chamfer 102, elastic collar 11, conductive section 111, insulating connecting section 112, pen core 2, core rod body 21, rod tip section 211, transition cambered surface 2121, limiting ring 2122, ventilation plane 2123 of limiting ring 2122, contact section 2124, anti-jumping ring groove 2125, sound step ring 2126, connecting section 213, installation rod body 20 and installation long groove 201, pen tip 3 pen sleeve 4.

Detailed Description

The invention is further described below with reference to the figures and examples.

Example 1:

as shown in fig. 1 to 5, a convenient pen comprises a straight barrel-shaped pen holder 1 and a plurality of pen cores 2 with equal length, wherein different colors of ink including but not limited to red, black and blue are respectively arranged in different pen cores 2. The inside at pen-holder 1 both ends is equipped with spacing annular respectively, and the plane at spacing annular place is perpendicular with the axis of pen-holder 1, and the groove depth of spacing annular is 2 millimeters, and the inside of spacing annular is equipped with elasticity rand 11, and elasticity rand 11 adopts conductive metal material to make, can select the steel wire. The pen core 2 comprises a pen point 3 and a core rod body 21, the pen point 3 is positioned at the lower end of the core rod body 21, and the pen point 3 and the core rod body 21 are of a hollow integrated structure. The core rod body 21 comprises a rod tip section 211 connected with a pen point 3 and a limiting section 212 arranged at the upper end of the rod tip section 211, the cross section of the rod tip section 211 is circular, the limiting section 212 is coaxial with the rod tip section 211, the limiting section 212 forms a circle of limiting ring 2122 outside the contact surface of the rod tip section 211, the cross section of the limiting section 212 is a regular polygon, the cross section of the limiting section 212 of the pen core 2 of the convenient pen shown in the figure is a regular hexagon, the shape of the inner wall of the pen holder 1 is matched with that of the limiting section 212 and is in clearance fit, the sum of the lengths of the limiting sections 212 of all the pen cores 2 is the sum of the distance of two limiting ring grooves on the pen holder 1 and the length of the limiting section 212 which is 0.5 times of a single distance, the diameter of the elastic clamping ring 11 is smaller than the diameter of an inscribed circle of the limiting ring grooves and larger than the diameter of the inscribed circle of the inner diameter of the pen holder 1, and the inner diameter of one end, far away from the rod tip section 211, is the maximum size of the outer side of the rod tip section 211 plus 1 millimeter. The upper end of the limiting section 212 is provided with a connecting section 213, the connecting section 213 is circular, and the inscribed circle of the outer edge of the cross section of the limiting section 212 and the outer edge of the connecting section 213 are in the same cylindrical surface. The outer end of the connecting section 213 is provided with a round corner to facilitate the matching of the connecting section 213 and the elastic collar 11. One end of the limiting section 212 close to the rod tip section 211 is provided with a transition arc face 2121 which is matched with the rod tip section 211 and gradually reduces in size, the cross section of the transition arc face 2121 is changed from the limiting section 212 to the rod tip section 211 in a regular hexagon shape to a circle shape, and the transition arc face 2121 is provided with a ventilation plane 2123 tangent to the outer side face of the rod tip section 211. A circle of anti-jumping ring groove 2125 is arranged on the limiting section 212 of the core rod body 21, and the anti-jumping ring groove 2125 corresponds to the position of the elastic collar 11 at the lower end of the pen rod 1. Transition chamfers 102 are arranged on the inner walls of the two ends of the pen holder 1, and transition fillets 101 are arranged on the outer walls of the two ends of the pen holder 1. The penholder 1 is internally provided with an installation rod body 20, the shape and the length of the installation rod body 20 are the same as those of the core rod body 21, so that the installation rod body 20 can be combined in the penholder 1 in a front-back insertion mode like the core rod body 21; the rod wall of the limiting section 212 of the installation rod body 20 is provided with an installation elongated slot 201, and a fixing cover matched with the edge of the installation elongated slot 201 is arranged outside the installation elongated slot 201. Two sets of parallel and opposite inner contact sections 2124 are embedded outside the mandrel body 21, each set of inner contact sections 2124 is longitudinally distributed on the side surface of the mandrel body 21, and in fig. 1, the inner contact sections 2124 are arranged on one plane of the limiting section 212 of the mandrel body 21 and cover the intersecting edges of the plane and the adjacent plane, so that the inner contact sections 2124 can be ensured to be fully contacted with the elastic collar 11. The elastic collar 11 comprises two sections of arc-shaped conductive segments 111, the arc length and the radius of the two sections of conductive segments 111 are equal, the conductive segments 111 are connected through an insulating connecting segment 213112, an inner contact segment 2124 is in contact with the conductive segments 111, a battery is connected between the two sections of conductive segments 111 of the elastic collar 11 at one end of the pen holder 1 in a circuit mode, and an indicator lamp is connected between the conductive segments 111 of the elastic collar 11 at the other end of the pen holder 1 in a circuit mode. The conductive segment 111 can be made of an iron material, the insulating connecting segment 213112 can also be made of an insulating plastic material, one end of the conductive segment 111 can be provided with a fixing pin, and the insulating connecting segment 213112 can be provided with a fixing hole, so that the integral connection of the insulating connecting segment 213112 and the conductive segment 111 is completed, and the circuit conducting capability of the conductive segment 111 is ensured while the limiting capability of the elastic retainer ring 11 on the pen core 2 is ensured; two conductive segments 111 on the same elastic collar 11 are respectively connected to the positive pole and the negative pole of a battery or an indicator light through wires, and the battery and the indicator light are respectively embedded in the penholder 1. In fig. 1, a pen cap 4 is provided at the lower end of a pen holder 1 to protect a pen point 3.

Example 2:

as shown in fig. 6, embodiment 2 is different from embodiment 1 in that: the limiting section 212 of the mandrel body 21 is provided with five scale rings 2126 arranged in parallel with the limiting ring 2122; the scale rings 2126 are coaxial with the stop ring 2122, the cross section of each scale ring 2126 is semicircular, the diameters of all scale rings 2126 are different, and the distances between adjacent scale rings 2126 are different. The scale rings 2126 are matched with the elastic clamping rings 11 in the penholder 1 to generate knocking sound, the scale rings 2126 are different in diameter and distance and can generate sound with different frequencies, the elastic clamping rings 11 at two ends of the penholder can be used simultaneously, the elastic clamping rings 11 can be matched with the scale rings at different positions and different sizes by pulling the core rod body back and forth, so that the elastic clamping rings collide with the scale rings to generate different knocking bodies, the sound combination modes of various frequencies are multiple, the pen can be used as a knocking instrument, and the entertainment of the pen is improved.

When the pen is used, the rod tip section 211 can extend into the limiting section 212 of the next pen core 2, the limiting ring 2122 limits the depth of the rod tip section 211 which is inserted into the limiting section 212, and the plurality of pen core bodies 21 in the pen holder 1 are connected end to end through a structure that the inner wall of the pen holder 1 is in clearance fit with the outer wall of the limiting section 212, the pen tip 3 sections of the pen core bodies 21 can slide into the elastic clamping ring 11, the tail end of the limiting section 212 is limited by the elastic clamping ring 11, the pen core bodies 21 can only slide in one direction in the pen holder 1, the pen core bodies 21 can be filled with ink of different colors to carry pens of various colors, when in stenography, the pen core 2 is pulled out from one end of the pen holder 1 where the pen tip 3 of the pen core bodies 21 is located, and the pulled-out pen core 2 can be plugged into the other end of the pen holder 1 to complete quick replacement of the pen cores 2 of different colors in the pen holder; the pen core 2 is divided into the modules, so that the replacement of the pen core 2 can be completed quickly, the time is shortened to 1 second or even shorter, and the shorthand efficiency is greatly improved. The installation elongated slot 201 can be internally provided with a recording element, an eraser, a ruler plate and the like, and the penholder 1 is modularized through the combination of the installation elongated slot 201 and the limiting section 212, so that the pen can play a role in carrying and storing tiny appliances, and the office and school are facilitated. One end of the elastic clamping ring 11 at the two ends of the pen holder 1 is provided with a battery which is communicated with the conductive section 111, the inner contact section 2124 is contacted with the elastic clamping ring 11, the inner contact section 2124 forms a capacitor, the battery charges the inner contact section 2124, electrons in the capacitor can be released after the inner contact section 2124 is contacted with the conductive section 111 with an indicator lamp at the other end of the pen holder 1, the indicator lamp can briefly emit light, the change of the internal capacitance of the inner contact section 2124 can be caused by the change of the internal ink volume of the core rod body 21, the ink volume in the core rod can be judged through the change of the brightness of the indicator lamp, the ink volume can be qualitatively observed in occasions such as learning and office and the like needing to be rapidly recorded, the preparation work of the ink volume is made before the use, the ink is prevented from being replaced in the middle of the use of the pen, and the office and learning efficiency is further improved.

Claims

1. A convenient pen is characterized by comprising a straight barrel-shaped pen holder and a plurality of pen cores with the same length, wherein limiting ring grooves are respectively arranged inside two ends of the pen holder, an elastic clamping ring is arranged inside each limiting ring groove, each pen core comprises a pen point and a core rod body, the pen point is positioned at the lower end of the core rod body, the core rod body comprises a rod point section connected with the pen point and a limiting section arranged at the upper end of the rod point section, the limiting section is coaxial with the rod point section, the limiting section forms a circle of limiting ring outside a contact surface of the rod point section, the cross section of the limiting section is a regular polygon, the inner wall of the pen holder is matched with the limiting section in shape and is in clearance fit, the sum of the lengths of the limiting sections of all the pen cores is the distance between the two limiting ring grooves on the pen holder plus 0-0.9 times of the length of a single limiting section, the diameter of the elastic clamping ring is smaller than the diameter of an inscribed circle of the limiting ring groove and larger than the diameter of an inscribed circle of the inner diameter of the pen holder, the rod point section, the inner diameter of the limiting section is the rod point section, the inner diameter of the limiting section plus 0-2 mm of the maximum size outside the rod point section of the maximum size of the rod point section, the core rod is characterized in that two groups of parallel and opposite inner contact sections are embedded in the outer side of the core rod body, each group of inner contact sections are longitudinally distributed on the side face of the core rod body, each elastic clamping ring comprises two sections of arc-shaped conductive sections, the conductive sections are connected through insulating connecting sections, the inner contact sections are in contact with the conductive sections, a battery is connected between the two sections of conductive sections of the elastic clamping ring at one end of the pen rod in a circuit mode, and an indicator lamp is connected between the connecting conductive sections of the elastic clamping ring at the other end of the pen rod in a circuit mode.

2. The pen as claimed in claim 1, wherein the upper end of the limiting section is provided with a connecting section, the connecting section is circular, and the inscribed circle of the outer edge of the cross section of the limiting section is a cylindrical surface which is the same as the outer edge of the connecting section.

3. A portable pen according to claim 1 or 2 wherein the cross section of the spacing segment is regular hexagonal.

4. A portable pen as claimed in claim 1 or 2, wherein the limiting section is provided with a transition arc surface at one end close to the rod tip section, the transition arc surface is gradually reduced in size to match the rod tip section, and the transition arc surface is provided with a ventilation plane tangent to the outer side surface of the rod tip section.

5. A convenient pen as claimed in claim 1 or 2, wherein the limiting section of the shaft body is provided with a ring of anti-jumping ring groove corresponding to the position of the elastic collar at the lower end of the shaft body.

6. The pen as claimed in claim 1, wherein the inner walls of the two ends of the shaft are provided with transition chamfers, and the outer walls of the two ends of the shaft are provided with transition fillets.

7. A portable pen according to claim 1 wherein the different cores are provided with different coloured inks including but not limited to red, black and blue.

8. The pen as claimed in claim 1, wherein the holder has a mounting rod body, the mounting rod body has the same shape and length as the core rod body, the wall of the limiting section of the mounting rod body has a mounting slot, and a fixing cover is disposed outside the mounting slot and engaged with the edge of the mounting slot.

9. The pen as claimed in claim 1, wherein the stopper section of the refill body is provided with a plurality of tone rings arranged in parallel with the stopper ring; the cross section of each tone ring is semicircular, the diameters of all the tone rings are different, and the distances between adjacent tone rings are different.