CN109319294B - Safety cover long tube - Google Patents
Safety cover long tube Download PDFInfo
- Publication number
- CN109319294B CN109319294B CN201811354709.6A CN201811354709A CN109319294B CN 109319294 B CN109319294 B CN 109319294B CN 201811354709 A CN201811354709 A CN 201811354709A CN 109319294 B CN109319294 B CN 109319294B
- Authority
- CN
- China
- Prior art keywords
- cover
- chute
- safety
- safety cover
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
- B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
- B65D50/06—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of different actions in succession
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The invention belongs to the field of packaging bottles, and particularly discloses a safety cover long tube, which comprises a tube body and a safety cover, wherein the lower part of the tube body is sealed; the upper part of the pipe body is provided with a connecting section, the upper end of the connecting section is provided with an opening, the opening is communicated with the pipe body, the safety cover comprises a cover body and a sealing element, and the sealing element is positioned at the top part in the cover body and fixedly connected with the top wall of the cover body; the connecting section is circumferentially provided with a plurality of groups of clamping parts, each group of clamping parts comprises a chute and two protruding pieces, a clamping groove is formed between the two protruding pieces, the lower end of the chute is communicated with the lower end of the clamping groove, the upper end of the chute is level with the upper end of the connecting section, the inner wall of the cover body is provided with a plurality of protrusions, the number of the protrusions is the same as that of the clamping parts, and the protrusions can be clamped into the clamping grooves; the projection is slidable along the chute. The long tube is provided with a safety cover, so that children can be prevented from opening the safety cover to eat other articles by mistake.
Description
Technical Field
The invention belongs to the field of packaging bottles, and particularly discloses a long safety cover tube.
Background
Various containers are indispensable articles in daily life of people, and the containers generally include: the bottle body and the bottle cap are connected through threads, such as external threads are arranged at the bottle mouth, and internal threads matched with the external threads are arranged in the bottle cap. Of course, some containers may be referred to as tubes, and particularly tubes having lengths above 15 cm may be referred to as long tubes.
The existing rotary cap bottle body adopting the threaded connection mode does not consider the factor of children users in actual use. When the existing bottle body needs to be unscrewed, only the bottle cap is required to be simply rotated, if the bottle body is filled with articles which need to be prevented from being eaten by children by mistake, a certain potential safety hazard exists when the bottle body is unscrewed easily by children, the difficulty of unscrewing is increased, the use difficulty of adult users cannot be increased, and the contradictory packaging bottle cap cannot be balanced well in the market at present.
Disclosure of Invention
The invention aims to provide a long tube with a safety cover, which can prevent children from opening the safety cover to eat other articles by mistake.
In order to achieve the above purpose, the basic scheme provided by the invention is as follows: the safety cover long tube comprises a tube body and a safety cover, wherein the lower part of the tube body is sealed; the upper part of the pipe body is provided with a connecting section, the upper end of the connecting section is provided with an opening, the opening is communicated with the pipe body, the safety cover comprises a cover body and a sealing element, and the sealing element is positioned at the top part in the cover body and fixedly connected with the top wall of the cover body; the connecting section is circumferentially provided with a plurality of groups of clamping parts, each group of clamping parts comprises a chute and two protruding pieces, a clamping groove is formed between the two protruding pieces, the lower end of the chute is communicated with the lower end of the clamping groove, the upper end of the chute is level with the upper end of the connecting section, the inner wall of the cover body is provided with a plurality of protrusions, the number of the protrusions is the same as that of the clamping parts, and the protrusions can be clamped into the clamping grooves; the projection is slidable along the chute.
The beneficial effects of adopting this basic scheme are as follows:
1. in this scheme, the body is used for holding article, when needs are sealed, aligns the protruding back with the draw-in groove of lid, after going into the draw-in groove with protruding card, can be with safety cover and body coupling, and connected mode is simple and convenient, the people of being convenient for operate.
2. The sealing element is arranged on the inner wall of the cover body, and can play a role in sealing, so that articles in the pipe body, especially liquid, are prevented from being spilled out, and the articles in the pipe body are better protected.
3. The inner wall of the cover body is provided with the bulge, when the cover body is connected with the connecting section, the bulge is clamped in the clamping groove, when a child wants to open the safety cover, the safety cover can be rotated, and because of the arrangement of the clamping groove, the clamping groove can clamp the bulge, so that the safety cover can not be opened, namely, the phenomenon that articles in the pipe body are spilled out is avoided, and the child is prevented from eating by mistake.
4. Because draw-in groove lower part and chute lower part intercommunication, when protruding when rotating the safety cover behind the lower extreme is wiped to the being located, protruding slide along the chute, the safety cover is along chute upward movement when rotating promptly, can open the safety cover, also does not increase the degree of difficulty that the adult opened when avoiding children to open by mistake, convenient operation.
Further, the seal is a plastic seal. The sealing effect of the plastic sealing piece is better, and the cost of the plastic sealing piece is low.
Further, the seal is a plastic seal made of elastic plastic. When the safety cap is opened, the safety cap needs to be pressed downwards, and at this time, the plastic sealing piece is also extruded to deform. The plastic sealing piece made of elastic plastic can avoid damage of the plastic sealing piece and ensure the sealing effect of the plastic sealing piece.
Further, the device also comprises a steel ball and an elastic piece; the cover body comprises an inner cover and an outer cover; the inner wall of the outer cover is circular in cross section, and the inner cover is circular; the outer cover is covered with an inner cover, an annular groove is formed in the circumferential direction of the inner cover, a plurality of protrusions are uniformly formed in the inner wall of the outer cover, and the protrusions extend into the annular groove and are in sliding fit with the annular groove; a plurality of grooves are formed in the annular groove, the steel balls are located in the grooves, the elastic piece is located between the steel balls and the bottoms of the grooves, and the protrusions can be in contact with the steel balls. In order to avoid the damage of the protruding piece caused by the direct rotation of the safety cover by others when the safety cover is covered, the structure is provided. When opening, the downward outer lid of pressing, the inner cup can be under the downwardly moving of outer lid roof and convex effect, and in protruding entering chute promptly, when the outer lid of rethread, the protrusion of outer lid contacts with the steel ball, drives the inner cup and rotates, opens the safety lid. When the outer cover is not pressed and directly rotates, the extrusion force applied by the steel ball can enable the steel ball to enter the groove when the protrusion rotates to the steel ball, so that the outer cover idles, and damage to the protruding piece is avoided.
Further, the elastic piece is a spring, and the spring is cheap and easy to obtain.
Drawings
FIG. 1 is a front view of a safety cap wand of the present invention;
FIG. 2 is a front view of the tube body;
FIG. 3 is a sectional view of the safety cover in example 1;
FIG. 4 is a cross-sectional view at A in FIG. 3;
FIG. 5 is an enlarged view at B in FIG. 3;
FIG. 6 is an enlarged view at C in FIG. 5;
FIG. 7 is a schematic view of the safety cap in example 2;
fig. 8 is an enlarged view of D in fig. 7.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the pipe body 1, the safety cover 2, the connecting section 3, the clamping groove 4, the chute 5, the protruding piece 6, the outer cover 7, the inner cover 8, the plastic sealing piece 9, the bulge 10, the annular groove 11, the bulge 12, the groove 13, the steel ball 14, the spring 15, the sliding groove 16, the sliding plate 17, the tension spring 18, the limiting block 19, the top cover 20, the first chute 21, the compression spring 22, the first inclined block 23 and the second inclined block 24.
Example 1
This embodiment is basically as shown in fig. 1 and 2: the long safety cover tube comprises a tube body 1 and a safety cover 2. The cross section of the tube body 1 is rectangular. The lower end of the pipe body 1 is closed. The upper part of the pipe body 1 is provided with a connecting section 3, and the connecting section 3 is cylindrical and is used for being connected with the safety cover 2. The connecting section 3 is provided with an opening which is communicated with the pipe body 1. The safety cap 2 comprises a cap body and a seal, in this embodiment a plastic seal 9 made of an elastic plastic. The sealing effect by the plastic sealing piece 9 is better and the cost of the plastic sealing piece 9 is low. As shown in fig. 3 and 4, the cover body includes an inner cover 8 and an outer cover 7, the outer wall of the outer cover 7 is rectangular, and the inner wall is circular. The inner cap 8 is circular in cross section. As shown in fig. 5, the outer cover 7 is covered with the inner cover 8, and the inner cover 8 is circumferentially provided with an annular groove 11, and the inner wall of the outer cover 7 is provided with a plurality of protrusions 12, and the number of the protrusions 12 in this embodiment is six. The projection 12 protrudes into the annular groove 11 and is in sliding engagement with the annular groove 11. As shown in fig. 6, six grooves 13 are formed in the annular groove 11, and steel balls 14 are arranged in the grooves 13. In the original state, a part of the steel ball 14 protrudes from the groove 13, and the volume of the part of the steel ball 14 protruding from the groove 13 is smaller than one half of the volume of the steel ball 14. The elastic member in this embodiment is a spring 15.
A plastic seal 9 is located within the inner cap 8 and is fixedly connected to the top of the inner cap 8. The connecting section 3 circumference is equipped with multiunit block portion, and every block portion of group includes chute 5 and two outstanding piece 6, forms draw-in groove 4 between two outstanding pieces 6, chute 5 lower extreme and draw-in groove 4 lower extreme intercommunication, chute 5 upper end and connecting section 3 upper end parallel and level are equipped with a plurality of archs 10 at the inner wall of inner cup 8, and the quantity of protruding 10 is the same with the quantity of block portion, and quantity is four in this embodiment. The protrusion 10 can be snapped into the catch groove 4 and is in sliding engagement with the chute 5.
When the safety cap 2 is opened, the safety cap 2 needs to be pressed downward, and at this time, the seal is also pressed to be deformed. The sealing element made of elastic plastic can avoid damage to the sealing element and ensure the sealing effect of the sealing element.
The specific implementation process is as follows: in this scheme, body 1 is used for holding article, including particulate article, powdered article and liquid etc.. When the pipe is particularly used, articles to be contained are placed into the pipe body 1 through the opening, and then the safety cover 2 is covered to seal the articles in the pipe body 1. The specific sealing process is as follows: when sealing is needed, the protrusion 10 of the safety cover 2 is aligned with the clamping groove 4, then the safety cover 2 is pressed downwards, and the protrusion 10 is clamped into the clamping groove 4, so that the safety cover 2 can be connected with the pipe body 1. The inner wall of the inner cover 8 is provided with a plastic sealing piece 9, and the plastic sealing piece 9 can play a role in sealing to prevent articles, especially liquid, in the pipe body 1 from being spilled out. The protrusion 10 is engaged with the clamping groove 4, so that the child can rotate the safety cover 2 when opening by mistake, and the clamping groove 4 clamps the protrusion 10, so that the safety cover 2 cannot rotate, namely, the child is prevented from opening the long tube by mistake. When the safety cap 2 is opened by using the article in the tube body 1, the safety cap 2 is continuously pressed downwards, the protrusion 10 of the cap body slides to the lower part of the clamping groove 4, and at this time, the protrusion 10 is not clamped with the clamping groove 4 any more. Because the lower portion of the catching groove 4 communicates with the lower portion of the chute 5, when the safety cover 2 is rotated, the protrusion 10 slides along the chute 5, i.e., the safety cover 2 moves upward along the chute 5 while rotating, so that the safety cover 2 can be opened.
In this embodiment, the inner cover 8 and the outer cover 7 are provided to protect the protruding member 6 on the connection section 3. When someone directly rotates the safety cap 2 without pressing down the safety cap 2, damage to the protruding piece 6 may occur. And the outer cover 7 and the inner cover 8 are provided to avoid the occurrence of the above. When the outer cover 7 is pressed downwards, the inner cover 8 moves downwards under the action of the top wall of the outer cover 7 and the bulge 12, namely, the bulge 10 enters the chute 5, and when the outer cover 7 is rotated again, the bulge 12 of the outer cover 7 is contacted with the steel ball 14, at the moment, the force exerted by the bulge 12 on the steel ball 14 is insufficient to compress the spring 15, and the bulge 12 drives the inner cover 8 to rotate through the steel ball 14, so that the safety cover 2 is opened. When the outer cover 7 is not pressed and the outer cover 7 is directly rotated, the bulge 12 rotates in the annular groove 11, when the bulge 12 rotates to the steel ball 14, the extrusion force born by the steel ball 14 overcomes the elasticity of the spring 15, so that the steel ball 14 enters the groove 13, and at the moment, the outer cover 7 idles, namely, the outer cover 7 rotates and can not drive the inner cover 8 to rotate, the bulge 10 on the inner cover 8 can not rotate, and the bulge 10 naturally can not apply force to the protruding piece 6 to damage the protruding piece 6. When the outer cover 7 stops rotating, the steel ball 14 is extended out of a part of the groove 13 under the action of the spring 15.
Example 2
As shown in fig. 7 and 8, the difference between this embodiment and embodiment 1 is that the upper end of the outer cover 7 in this embodiment is provided with a hole, the hole is circular, and the diameter of the hole is equal to the inner diameter of the inner cover 8. The inner wall of the outer cover 7 is provided with a sliding groove 16, a sliding plate 17 is arranged in the sliding groove 16, and the sliding plate 17 can only slide up and down along the sliding groove 16. An elastic member, in this embodiment a tension spring 18, is provided between the bottom of the sliding groove 16 and the bottom of the sliding plate 17. The projection 12 is provided on the slide plate 17 and is in sliding engagement with the annular groove 11. A gap is provided between the top of the inner lid 8 and the outer lid 7. The inner cover 8 comprises a side cover and a top cover 20, the side cover and the top cover 20 are in sliding fit, and the plastic sealing piece 9 is connected with the inner wall of the top cover 20. The side cover is provided with a first transverse chute 21 and a second vertical chute, and the first chute 21 is communicated with the second chute. A first inclined block 23 is slidably connected to the first chute 21, and a second inclined block 24 is slidably connected to the second chute. A pressure spring 22 is arranged between the first inclined block 23 and the first chute 21. A notch is arranged at the lower end of the top cover 20, the notch of the top cover 20 can be contacted with the first inclined block 23, and the first inclined block 23 can be contacted with the second inclined block 24. The side wall of the side cover is provided with a limiting block 19.
This embodiment prevents not only the protruding piece 6 from being damaged but also the safety cover 2 from being opened when being touched by mistake on the basis of embodiment 1. When the safety cap 2 is erroneously bumped or collided, or when the safety cap 2 receives a large pressing force, the outer cap 7 moves downward. Because a gap is reserved between the outer cover 7 and the inner cover 8, the inner cover 8 is not driven to move when the outer cover 7 moves, and then the protrusion 10 in the inner cover 8 does not move downwards, namely, the protrusion 10 is continuously clamped in the clamping groove 4, so that the sealing of the pipe body 1 is ensured. Further, since the sliding groove 16 is provided on the side wall of the outer cap 7, when the outer cap 7 moves downward, the sliding plate 17 and the outer cap 7 will be displaced relatively, and the positions of the sliding plate 17 and the protrusion 12 relative to the inner cap 8 are unchanged, so that the protrusion 10 can be considered to not apply a force to the inner cap 8, or the applied force can be negligible, and thus, the movement of the inner cap 8 can be prevented from preventing the safety cap 2 from opening. When the sliding plate 17 and the sliding groove 16 move relatively, the tension spring 18 is stretched to play a role of buffering, and the force applied by the outer cover 7 is counteracted. Because the top of the outer cover 7 is provided with a hole, and the probability of direct contact with external force of the inner cover 8 is small because of the existence of the outer cover 7, the inner cover 8 is collided, so that the safety cover 2 is rarely opened by mistake. When the safety cover 2 needs to be opened, the top cover 20 of the inner cover 8 is pressed through the hole, the top cover 20 slides downwards along the side cover, the notch of the top cover 20 presses the first inclined block 23, the first inclined block 23 slides rightwards, and the pressure spring 22 is compressed at the moment. When the first inclined block 23 slides rightward, the first inclined block 23 presses the second inclined block 24, and the second inclined block 24 is moved upward until abutting against the inner wall of the outer lid 7, so that the inner lid 8 can be considered to directly abut against the outer lid 7. The top cover 20 is supported by the left end of the first chute 21, so that the first inclined block 23 cannot slide leftwards, and the second inclined block 24 cannot slide downwards due to the support of the first inclined block 23. At this time, the outer cap 7 and the inner cap 8 are considered to be integrated, and when the outer cap 7 is pressed again, the inner cap 8 can be driven to move, so that the protrusion 10 leaves the clamping groove 4, and the safety cap 2 is opened. The limiting block 19 on the inner wall of the side cover can limit the top cover 20. After the safety cover 2 is opened, the top cover 20 can be reset, the first slider is also restored to the original position under the action of the compression spring 22, and the second inclined block 24 is restored to the original position under the action of gravity.
The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. The safety cover long tube comprises a tube body and a safety cover, wherein the lower part of the tube body is sealed; the method is characterized in that: the upper part of the pipe body is provided with a connecting section, the upper end of the connecting section is provided with an opening, the opening is communicated with the pipe body, the safety cover comprises a cover body and a sealing element, and the sealing element is positioned at the top part in the cover body and fixedly connected with the top wall of the cover body; the connecting section is circumferentially provided with a plurality of groups of clamping parts, each group of clamping parts comprises a chute and two protruding pieces, a clamping groove is formed between the two protruding pieces, the lower end of the chute is communicated with the lower end of the clamping groove, the upper end of the chute is level with the upper end of the connecting section, the inner wall of the cover body is provided with a plurality of protrusions, the number of the protrusions is the same as that of the clamping parts, and the protrusions can be clamped into the clamping grooves; the protrusion can slide along the chute;
the cover body comprises an inner cover and an outer cover, the cross section of the inner wall of the outer cover is circular, the inner cover is circular, the upper end of the outer cover is provided with a hole, the hole is circular, the diameter of the hole is equal to the inner diameter of the inner cover, and a gap is arranged between the inner cover and the top of the outer cover; the inner wall of the outer cover is provided with a sliding groove, a sliding plate is arranged in the sliding groove and can only slide up and down along the sliding groove, a tension spring is arranged between the bottom of the sliding groove and the bottom end of the sliding plate, and a bulge is arranged on the sliding plate; the outer cover is covered with an inner cover, an annular groove is formed in the circumferential direction of the inner cover, and the protrusion extends into the annular groove and is in sliding fit with the annular groove; a plurality of grooves are formed in the annular groove, steel balls are arranged in the grooves, elastic pieces are arranged between the steel balls and the bottoms of the grooves, and the protrusions can be in contact with the steel balls;
the inner cover comprises a side cover and a top cover, the side cover is in sliding fit with the top cover, and the sealing element is connected with the inner wall of the top cover; the side cover is provided with a first transverse chute and a second vertical chute, the first chute is communicated with the second chute, a first inclined block is connected in the first chute in a sliding way, a second inclined block is connected in the second chute in a sliding way, and a pressure spring is arranged between the first inclined block and the first chute; the lower end of the top cover is provided with a notch, the notch of the top cover can be contacted with the first inclined block, and the first inclined block can be contacted with the second inclined block; the side wall of the side cover is provided with a limiting block.
2. The safety cover elongated tube according to claim 1, wherein: the seal is a plastic seal.
3. The safety cover elongated tube according to claim 2, wherein: the sealing element is a plastic sealing element made of elastic plastic.
4. A safety cover elongated tube according to claim 3, characterized in that: the elastic piece is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811354709.6A CN109319294B (en) | 2018-11-14 | 2018-11-14 | Safety cover long tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811354709.6A CN109319294B (en) | 2018-11-14 | 2018-11-14 | Safety cover long tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109319294A CN109319294A (en) | 2019-02-12 |
| CN109319294B true CN109319294B (en) | 2024-03-15 |
Family
ID=65257199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811354709.6A Active CN109319294B (en) | 2018-11-14 | 2018-11-14 | Safety cover long tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109319294B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149746A (en) * | 1960-10-24 | 1964-09-22 | Spra Lok Corp | Self-locking container cap |
| US5476181A (en) * | 1994-03-15 | 1995-12-19 | Seidler; David | Child-resistant product dispenser |
| CN103991629A (en) * | 2013-05-06 | 2014-08-20 | 徐涛 | Indexing bottle cap for use with a container |
| CN206798149U (en) * | 2017-05-08 | 2017-12-26 | 湖南工业大学 | Childproof medicine bottle |
| CN209321579U (en) * | 2018-11-14 | 2019-08-30 | 宁波纽莱国际贸易有限公司 | Safety head long tube |
-
2018
- 2018-11-14 CN CN201811354709.6A patent/CN109319294B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149746A (en) * | 1960-10-24 | 1964-09-22 | Spra Lok Corp | Self-locking container cap |
| US5476181A (en) * | 1994-03-15 | 1995-12-19 | Seidler; David | Child-resistant product dispenser |
| CN103991629A (en) * | 2013-05-06 | 2014-08-20 | 徐涛 | Indexing bottle cap for use with a container |
| CN206798149U (en) * | 2017-05-08 | 2017-12-26 | 湖南工业大学 | Childproof medicine bottle |
| CN209321579U (en) * | 2018-11-14 | 2019-08-30 | 宁波纽莱国际贸易有限公司 | Safety head long tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109319294A (en) | 2019-02-12 |
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