Packing box for washing suit

By using a packaging box made of cardboard, including a support seat and a buffer, the problems of EPS material pollution and toiletries are solved, and environmental protection and stability are achieved for easy display.

CN223059491UActive Publication Date: 2025-07-04CHONGQING MYS SUSTAINABLE PACKAGING TECH CO LTD
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Patent Information

Application Number
CN202421908978.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-08
Publication Date
2025-07-04
Estimated Expiration
2034-08-08

AI Technical Summary

Technical Problem

The existing toiletry set packaging box uses EPS materials to cause serious environmental pollution and cannot effectively fix toiletries, which are prone to displacement or damage during transportation.

Method used

The packaging box made of cardboard includes an outer box and a support seat. The support seat consists of a top plate and a bottom plate. The top plate is equipped with a receptacle, and one end of the support seat is equipped with a buffer section to stabilize the installation of toiletries to prevent displacement and damage.

Benefits of technology

Reduces environmental pollution, ensures that toiletries do not move or damage during transportation, and are easy to display, improving the protective performance during transportation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of packaging, and discloses a packaging box for a washing suit. The packaging box for the washing set comprises an outer box body and a supporting seat inserted in the outer box body, the outer box body and the supporting seat are both formed by folding paperboards, the supporting seat comprises a top plate and a bottom plate which are arranged at intervals in the Z-axis direction, a plurality of containing openings are formed in the top plate, and a plurality of washing tools can be clamped in the corresponding containing openings. A buffering part is arranged at at least one end of the supporting base in the Y-axis direction. According to the packaging box for the washing suit, a traditional EPS material is abandoned, the influence on the ecological environment is effectively reduced, and the environmental protection property is high; a plurality of accommodating openings are formed in the top plate of the supporting seat, so that a plurality of washing tools contained in the washing set can be stably clamped in the accommodating openings of the supporting seat, and the washing tools are prevented from shifting or being damaged in the transportation process; when commodities are displayed, the supporting base can be directly taken out of the outer box body for displaying, and convenience and rapidness are achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a packaging box for a toiletries set. Background Art

[0002] With the improvement of living standards, people pay more and more attention to toiletries, and more and more families choose to buy a complete set of toiletries. In the current market, EPS (expanded polystyrene) is usually used to package and transport toiletries sets. However, the degradation period of EPS is very long, which has a great impact on the ecological environment. And the commonly used packaging boxes at present cannot fix the products well. During transportation, the toiletries may shift and pierce through the packaging box or cause the packaging box to come apart, resulting in losses.

[0003] Therefore, it is necessary to provide a packaging box for a toiletries set to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a packaging box for a toiletries set, which is made of cardboard, effectively reduces the impact on the ecological environment, has strong environmental protection, and multiple toiletries included in the toiletries set can be firmly clamped in the packaging box without shifting or being damaged during transportation.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A packaging box for a toiletries set includes an outer box body and a support seat inserted into the outer box body. Both the outer box body and the support seat are folded from cardboard. The support seat includes a top plate and a bottom plate spaced along the Z-axis direction. A plurality of accommodation openings are formed in the top plate, and a plurality of toiletries can be clamped in the corresponding plurality of accommodation openings. At least one end of the support seat along the Y-axis direction is provided with a buffer portion.

[0007] Preferably, the plurality of accommodation openings are divided into two groups of accommodation opening groups, and the two groups of accommodation opening groups are distributed along the X-axis direction. The support seat further includes a partition plate, and the partition plate is arranged between the top plate and the bottom plate, and the partition plate can separate a plurality of toiletries respectively clamped in the two groups of accommodation opening groups.

[0008] Preferably, the buffer portion includes a first folding plate and a second folding plate sequentially extending from the end edge of the top plate, and the first folding plate and the second folding plate are folded to form the buffer portion.

[0009] Preferably, the top end surface of the second folding plate along the Z-axis direction is higher than the surface of the top plate, and a reinforcing plate extends from the end edge of the second folding plate, and the reinforcing plate is folded and fixedly connected to the second folding plate after folding.

[0010] Preferably, the support base further includes a first connecting plate, which is arranged at intervals in the X-axis direction. Both ends of the first connecting plate are respectively connected to the top plate and the bottom plate. A first bonding plate extends from the end edge of the first connecting plate, and after folding, the first bonding plate is fixedly connected to the first folding plate or the second folding plate.

[0011] Preferably, the accommodating opening includes a first accommodating opening, and the toiletries include a cup. A clamping plate extends from the end edge of the first accommodating opening. When the cup is clamped in the first accommodating opening, the clamping plate is clamped inside the cup.

[0012] Preferably, the accommodating opening includes a second accommodating opening, and the toiletries include a bottle body. Abuttment plates extend from both opposite end edges of the second accommodating opening. When the bottle body is clamped in the second accommodating opening, the abutment plates are located between the bottle body and the bottom plate.

[0013] Preferably, the outer box body includes a first box board, a second connecting plate and a second box board which are connected in sequence. A second bonding plate extends from one end in the X-axis direction of either the first box board or the second box board, and a third connecting plate extends from the other end in the X-axis direction of the other one. After folding, the second bonding plate is bonded to the third connecting plate.

[0014] Preferably, a first box bottom plate extends from one end of the first box board in the Y-axis direction, and a second box bottom plate extends from one end of the second box board in the Y-axis direction. The first box bottom plate and the second box bottom plate are superposed to form a double-layer bottom plate.

[0015] Preferably, a cover plate extends from the other end of either the first box board or the second box board in the Y-axis direction, and a first inserting plate is arranged at the other end of the other one in the Y-axis direction. A first inserting hole is formed in the cover plate. After the cover plate is folded, the first inserting plate is inserted into the first inserting hole.

[0016] The beneficial effects of the present utility model:

[0017] The packaging box of this toiletries set includes an outer box body and a support seat inserted into the outer box body. Both the outer box body and the support seat are folded from cardboard. The support seat includes a top plate and a bottom plate spaced along the Z-axis direction. A plurality of accommodation openings are formed on the top plate, and a plurality of toiletries can be clamped into the corresponding plurality of accommodation openings. At least one end of the support seat along the Y-axis direction is provided with a buffer portion. The packaging box of this toiletries set abandons the traditional EPS material and instead uses recyclable and degradable cardboard as the material for the outer box body and the support seat, effectively reducing the impact on the ecological environment and having strong environmental protection. By providing a plurality of accommodation openings on the top plate of the support seat, the multiple toiletries included in the toiletries set can be firmly clamped into the accommodation openings of the support seat, preventing them from shifting or being damaged during transportation. Moreover, the buffer portion provided at at least one end of the support seat further enhances the protection performance of the packaging box, effectively reducing the risk of loss during transportation. When displaying the product, the support seat can be directly taken out of the outer box body for display, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the support seat provided by the present utility model;

[0019] Figure 2 is a schematic structural view of the outer box body provided by the present utility model;

[0020] Figure 3 is an unfolded schematic view of the support seat provided by the present utility model;

[0021] Figure 4 is an unfolded schematic view of the outer box body provided by the present utility model.

[0022] In the figure:

[0023] 1. Outer box body; 11. First box board; 12. Second connecting board; 13. Second box board; 14. Second bonding board; 15. Third connecting board; 16. First box bottom board; 17. Second box bottom board; 18. Cover board; 181. First cover board; 182. Second cover board; 183. First jack; 19. First plug board;

[0024] 2. Support seat; 21. Top plate; 2111. First accommodation opening; 21111. Clamping board; 2112. Second accommodation opening; 21121. Abutting board; 2113. Third accommodation opening; 221. First bottom board; 222. Second bottom board; 23. Buffer portion; 231. First folding board; 232. Second folding board; 233. Reinforcing board; 241. First partition board; 2411. Second jack; 242. Second partition board; 2421. Second plug board; 25. First connecting board; 26. First bonding board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] With the improvement of living standards, people pay more and more attention to toiletries, and more and more families choose to buy complete sets of toiletries. In the current market, EPS (expanded polystyrene) is usually used to package and transport toiletries, but the degradation cycle of EPS is very long, which has a great impact on the ecological environment; and the commonly used packaging boxes cannot fix the products well. During transportation, toiletries may shift and break the packaging box or cause the packaging box to fall apart, causing losses.

[0030] In order to solve the above problems, Figures 1 - 4As shown in the figure, this embodiment provides a packaging box for a toiletries set. The packaging box for this toiletries set includes an outer box body 1 and a support base 2 inserted into the outer box body 1. Both the outer box body 1 and the support base 2 are formed by folding cardboard. The support base 2 includes a top plate 21 and a bottom plate spaced along the Z-axis direction. A plurality of accommodation openings are formed in the top plate 21, and a plurality of toiletries can be clamped in the corresponding plurality of accommodation openings. At least one end of the support base 2 in the Y-axis direction is provided with a buffer portion 23. This packaging box for the toiletries set abandons the traditional EPS material and instead uses recyclable and degradable cardboard as the material for the outer box body 1 and the support base 2, effectively reducing the impact on the ecological environment and having strong environmental protection. By providing a plurality of accommodation openings in the top plate 21 of the support base 2, the multiple toiletries included in the toiletries set can be firmly clamped in the accommodation openings of the support base 2, preventing them from shifting or being damaged during transportation. Moreover, the buffer portion 23 provided at at least one end of the support base 2 further enhances the protection performance of this packaging box for the toiletries set, effectively reducing the risk of loss during transportation. When displaying the product, the support base 2 can be directly taken out of the outer box body 1 for display, which is convenient and fast.

[0031] Specifically, as Figure 1 , Figure 3 shown, the multiple accommodation openings are divided into two groups of accommodation opening groups, and the two groups of accommodation opening groups are distributed along the X-axis direction. The support base 2 further includes a partition plate disposed between the top plate 21 and the bottom plate, and the partition plate can separate the multiple toiletries respectively clamped in the two groups of accommodation opening groups. The partition plate can divide the space inside the support base 2 into two independent areas, with each area corresponding to a group of accommodation opening groups, making the layout of the toiletries in the packaging box more orderly, improving the space utilization rate, and effectively preventing the mutual collision and extrusion between different toiletries, thereby better protecting the integrity and appearance of the toiletries. Even if there is vibration or bump during transportation, the mutual friction and displacement between them can be greatly reduced, further reducing the risk of loss.

[0032] Specifically, as Figure 1 , Figure 3 shown, the accommodation opening includes a first accommodation opening 2111, and the toiletries include a cup. A clamping plate 21111 extends from the edge of the first accommodation opening 2111. When the cup is clamped in the first accommodation opening 2111, the clamping plate 21111 is clamped inside the cup. This enhances the stability of the cup in the packaging box, preventing it from shifting or toppling during transportation and effectively protecting the cup.

[0033] In this embodiment, as Figure 1 , Figure 3 shown, if there are two cups in the toiletries set, then the number of the first accommodation openings 2111 is two. The two first accommodation openings 2111 form a group of accommodation opening groups, and the two first accommodation openings 2111 are spaced along the Y-axis direction.

[0034] Specifically, Figure 1 , Figure 3 As shown, the receiving port includes a second receiving port 2112, and the toiletries include a bottle body. Both opposite ends of the second receiving port 2112 are extended with abutment plates 21121. When the bottle body is clamped in the second receiving port 2112, the abutment plates 21121 are located between the bottle body and the bottom plate. The design of the abutment plates 21121 prevents the bottle body from directly contacting the mouth wall of the second receiving port 2112, thereby preventing the mouth wall of the second receiving port 2112 from scratching the bottle body. The design of the abutment plates 21121 makes the bottle body more stable when clamped. When the bottle body needs to be taken, the user only needs to gently lift or push the bottle body to make it free from the restriction of the abutment plates 21121, thereby facilitating quick taking, placement and sorting.

[0035] Specifically, Figure 1 , Figure 3 As shown, the receiving port further includes a third receiving port 2113 , and the toiletries include a tray, which is clamped in the third receiving port 2113 .

[0036] In this embodiment, if Figure 1 , Figure 3 As shown, the toiletries set includes a bottle body and a tray, and the number of the second receiving port 2112 and the third receiving port 2113 are both one, and the second receiving port 2112 and the third receiving port 2113 form a receiving port group, and the second receiving port 2112 and the third receiving port 2113 are spaced apart along the Y-axis direction.

[0037] Specifically, Figure 1 , Figure 3 As shown, the buffer portion 23 includes a first folded plate 231 and a second folded plate 232 extending sequentially from the end edge of the top plate 21. The first folded plate 231 and the second folded plate 232 are folded to form the buffer portion 23. Specifically, the first folded plate 231 is folded downward by 90°, and then the second folded plate 232 is folded upward by 180°. Finally, the first folded plate 231 and the second folded plate 232 are fixed to prevent them from being spread apart. In this embodiment, the first folded plate 231 and the second folded plate 232 are fixed by bonding.

[0038] Furthermore, if Figure 1 , Figure 3As shown, the top surface of the second folding plate 232 in the Z-axis direction is higher than the surface of the top plate 21. A reinforcing plate 233 extends from the end edge of the second folding plate 232. After being folded, the reinforcing plate 233 is fixedly connected to the second folding plate 232. When it is necessary to display the toiletries set, usually the support base 2 needs to be taken out of the outer box 1 and then placed vertically on the shelf. The design of the second folding plate 232 being higher helps to increase the contact area between the support base 2 and the shelf and improve the overall vertical stability. This can prevent the toiletries set from tipping over due to external forces or unstable factors during the display process; the design of the reinforcing plate 233 makes the part of the second folding plate 232 higher than the bottom plate surface a double-layer structure, with stronger stability and not easily deformed or damaged.

[0039] In order to stably fix the buffer part 23 to the end of the support base 2, in this embodiment, as Figure 1 、 Figure 3 shown, the support base 2 further includes a first connecting plate 25. The first connecting plates 25 are arranged at intervals in the X-axis direction. Both ends of the first connecting plate 25 are connected to the top plate 21 and the bottom plate respectively. A first bonding plate 26 extends from the end edge of the first connecting plate 25. After being folded, the first bonding plate 26 is fixedly connected to the first folding plate 231 or the second folding plate 232.

[0040] In some embodiments, after folding the first folding plate 231 downward by 90°, the first bonding plate 26 is folded and fixedly connected to the first folding plate 231, and then the second folding plate 232 is folded upward by 180° and the second folding plate 232 is fixedly connected to the first folding plate 231 and the first bonding plate 26. Specifically, the way of fixed connection is bonding; in other embodiments, after folding the first folding plate 231 downward by 90°, the second folding plate 232 is folded upward by 180°, and the second folding plate 232 is fixedly connected to the first folding plate 231. Finally, the first bonding plate 26 is folded and fixedly connected to the second folding plate 232. Specifically, the way of fixed connection is bonding.

[0041] In this embodiment, as Figure 1 、 Figure 3 shown, the specific structure and folding and forming steps of the cardboard that can be folded to form the support base 2 are as follows:

[0042] At both ends of the top plate 21 along the X-axis direction, first connecting plates 25 extend respectively. At both ends of the top plate 21 along the Y-axis direction, a first folding plate 231, a second folding plate 232 and a reinforcing plate 233 extend in sequence. At both ends of each first connecting plate 25 along the Y-axis direction, first bonding plates 26 extend. At one end edge of a first connecting plate 25 along the X-axis direction, a first bottom plate 221 and a first partition plate 241 extend in sequence. A second jack 2411 is formed on the first partition plate 241. At the other end edge of the other first connecting plate 25 along the X-axis direction, a second bottom plate 222 and a second partition plate 242 extend in sequence. A second plug plate 2421 is arranged on the second bottom plate 222.

[0043] During folding, the two first connecting plates 25 are folded downward by 90°, and the first bottom plate 221 and the second bottom plate 222 are folded toward the direction close to the top plate 21 by 90° so that the first bottom plate 221 and the second bottom plate 222 are spliced into a bottom plate. Then the first partition plate 241 and the second partition plate 242 are folded upward by 90° so that the first partition plate 241 and the second partition plate 242 are spliced into a partition plate. Inserting the second plug plate 2421 into the second jack 2411 completes the fixation. The folding methods of the buffer part 23 and the first bonding plate 26 have been specifically described above. For the sake of concise writing, they will not be elaborated here.

[0044] Specifically, as Figure 2 、 Figure 4 shown, the outer box body 1 includes a first box board 11, a second connecting plate 12 and a second box board 13 which are connected in sequence. One of the first box board 11 and the second box board 13 extends a second bonding plate 14 at the end along the X-axis direction, and the other extends a third connecting plate 15 at the end along the X-axis direction. After folding, the second bonding plate 14 is bonded to the third connecting plate 15.

[0045] In this embodiment, as Figure 2 、 Figure 4 shown, the end of the first box board 11 extends a third connecting plate 15, and the end of the second box board 13 extends a second bonding plate 14. During folding, the second connecting plate 12 and the third connecting plate 15 are both folded downward by 90°, then the second box board 13 is folded toward the direction close to the first box board 11 by 90°, and then the second bonding plate 14 is folded upward by 90° and bonded.

[0046] Specifically, as Figure 2 、 Figure 4 shown, one end of the first box board 11 along the Y-axis direction extends a first box bottom plate 16, and one end of the second box board 13 along the Y-axis direction extends a second box bottom plate 17. The first box bottom plate 16 and the second box bottom plate 17 are superposed to form a double-layer bottom plate.

[0047] Specifically, as Figure 2 、 Figure 4As shown, one of the first box board 11 and the second box board 13 extends a cover plate 18 at the other end in the Y-axis direction, and the other is provided with a first insertion plate 19 at the other end in the Y-axis direction. A first insertion hole 183 is formed on the cover plate 18. After the cover plate 18 is folded, the first insertion plate 19 is inserted into the first insertion hole 183. This helps to enhance the stability of the outer box body 1 and prevent it from accidentally opening or falling apart during transportation. The design of the first insertion plate 19 and the first insertion hole 183 makes the sealing and opening of the outer box body 1 simple and fast. The user only needs to align the first insertion plate 19 with the first insertion hole 183 and insert it to easily complete the sealing of the outer box body 1, reducing the operation difficulty and improving the use efficiency.

[0048] In this embodiment, as Figure 2 , Figure 4 shown, the cover plate 18 is arranged at the other end of the first box board 11, and the first insertion plate 19 is arranged at the other end of the second box board 13. The cover plate 18 includes a first cover plate 181 and a second cover plate 182. After folding the first cover plate 181 downward by 90°, fold the second cover plate 182 towards the first box board 11, and insert the first insertion plate 19 into the first insertion hole 183.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A packaging box for a toiletries set, characterized in that, It includes an outer box body (1) and a support seat (2) inserted into the outer box body (1). Both the outer box body (1) and the support seat (2) are formed by folding cardboard. The support seat (2) includes a top plate (21) and a bottom plate spaced along the Z-axis direction. A plurality of accommodation openings are formed on the top plate (21), and a plurality of toiletries can be clamped in the corresponding plurality of accommodation openings. At least one end of the support seat (2) along the Y-axis direction is provided with a buffer portion (23).

2. The packaging box of the toiletries set according to claim 1, characterized in that, The plurality of accommodation openings are divided into two groups of accommodation opening groups, and the two groups of accommodation opening groups are distributed along the X-axis direction. The support seat (2) further includes a partition plate, and the partition plate is arranged between the top plate (21) and the bottom plate. The partition plate can separate the plurality of toiletries respectively clamped in the two groups of accommodation opening groups.

3. The packaging box of the toiletries set according to claim 1, characterized in that, The buffer portion (23) includes a first folding plate (231) and a second folding plate (232) sequentially extending from the edge of the end of the top plate (21). The first folding plate (231) and the second folding plate (232) are folded to form the buffer portion (23).

4. The packaging box of the toiletries set according to claim 3, characterized in that, The top end surface of the second folding plate (232) along the Z-axis direction is higher than the surface of the top plate (21). A reinforcing plate (233) extends from the edge of the end of the second folding plate (232), and the reinforcing plate (233) is folded and fixedly connected to the second folding plate (232).

5. The packaging box of the toiletries set according to claim 3, characterized in that, The support seat (2) further includes a first connecting plate (25), and the first connecting plates (25) are spaced along the X-axis direction. Both ends of the first connecting plate (25) are respectively connected to the top plate (21) and the bottom plate. A first adhesive plate (26) extends from the edge of the end of the first connecting plate (25), and the first adhesive plate (26) is folded and fixedly connected to the first folding plate (231) or the second folding plate (232).

6. The packaging box of the toiletries set according to any one of claims 1-5, characterized in that, The accommodation opening includes a first accommodation opening (2111), and the toiletries include a cup. A clamping plate (21111) extends from the edge of the end of the first accommodation opening (2111). When the cup is clamped in the first accommodation opening (2111), the clamping plate (21111) is clamped inside the cup.

7. The packaging box of the toiletries set according to any one of claims 1-5, characterized in that The accommodation opening includes a second accommodation opening (2112), and the toiletries include a bottle body. Abuttment plates (21121) extend from both opposite edges of the second accommodation opening (2112). When the bottle body is clamped in the second accommodation opening (2112), the abutment plates (21121) are located between the bottle body and the bottom plate.

8. The packaging box of the toiletries set according to any one of claims 1-5, characterized in that, The outer box body (1) includes a first box board (11), a second connecting plate (12) and a second box board (13) connected in sequence. One of the first box board (11) and the second box board (13) extends a second adhesive plate (14) at the end along the X-axis direction, and the other extends a third connecting plate (15) at the end along the X-axis direction. The second adhesive plate (14) is folded and adhered to the third connecting plate (15).

9. The packaging box of the toiletries set according to claim 8, characterized in that, One end of the first box board (11) extends along the Y-axis direction to form a first box bottom board (16), and one end of the second box board (13) extends along the Y-axis direction to form a second box bottom board (17). The first box bottom board (16) and the second box bottom board (17) are superposed to form a double-layer bottom board.

10. The packaging box of the toiletries set according to claim 9, characterized in that, One of the first box board (11) and the second box board (13) extends along the other end in the Y-axis direction to form a cover board (18), and the other one is provided with a first plug board (19) at the other end in the Y-axis direction. A first jack (183) is formed on the cover board (18). After the cover board (18) is folded, the first plug board (19) is inserted into the first jack (183).