Drawer box capable of automatically popping up by pulling

Abstract

The invention discloses a drawer box capable of automatically popping out by pulling, which comprises a box body and a drawing box arranged in the box body in a sliding manner, a fixed plate is fixed in the box body, an elastic reset piece is arranged between the fixed plate and the drawing box, the elastic reset piece comprises at least two connecting plates, and a folding elastic piece is arranged between the adjacent connecting plates; a transmission plate parallel to the bottom face of the box body is fixed to the side wall in the box body, the transmission plate is sleeved with a conveying belt in the sliding arrangement direction of the drawing box, the upper end of the conveying belt is fixedly connected with the bottom of the drawing box, a trigger rod is fixed to the lower end of the conveying belt and comprises a horizontal part and a vertical part, and the horizontal part is fixedly connected with the lower end of the conveying belt. One end of the vertical part is fixedly connected with the horizontal part, the other end of the vertical part is arranged in the connecting plate close to one side of the drawing box in a sliding mode, a user only needs to slightly pull the drawing box, the conveying belt compresses the elastic reset piece through the trigger rod, and stability and reliability in the popping process are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of packaging boxes, in particular to a drawer box that pops up automatically when pulled. Background Art

[0002] With the growing demand for modern packaging and storage, drawer boxes, as a commonly used storage container, are widely used in many fields due to their simple structure and low cost. In particular, in the packaging industry, cardboard drawer boxes are widely used due to their lightness, environmental protection and easy processing. However, there are many problems in the design and use of existing drawer box pop-up mechanisms, especially when the drawer box is made of cardboard, these problems are more prominent.

[0003] In the prior art, the pop-up mechanism of the drawer box usually relies on a traditional spring reset device. This design stores elastic potential energy by compressing the spring, and releases the elastic potential energy when needed to push the drawer box to pop out. However, the elastic potential energy of the spring is closely related to its compression degree. If the compression degree of the spring is too large, the elastic potential energy released by the spring will also be greater, and then when the drawer box is popped out, the drawer box will be subjected to greater force. For a drawer box made of cardboard, this may cause excessive pop-up force, thereby affecting the pop-up of the pull-out box, affecting the user experience and product stability. Summary of the invention

[0004] In order to ensure that the drawer box can be ejected stably and safely for a long time, a drawer box that can be automatically ejected by pulling is provided.

[0005] The above application object of the present invention is achieved through the following technical solutions: A pull-out drawer box automatically pops up, comprising a box body and a drawer box slidably arranged in the box body, wherein a fixing plate is fixed in the box body, an elastic reset member is installed between the fixing plate and the drawer box, the elastic reset member comprises at least two connecting plates, and a folding spring sheet is installed between adjacent connecting plates; A transmission plate parallel to the bottom surface of the box body is fixed on the side wall inside the box body, and a conveyor belt is sleeved on the transmission plate along the sliding direction of the pull-out box. The upper end of the conveyor belt is fixedly connected to the bottom of the pull-out box, and a trigger rod is fixed to the lower end of the conveyor belt. The trigger rod includes a horizontal part and a vertical part. The horizontal part is fixedly connected to the lower end of the conveyor belt, one end of the vertical part is fixedly connected to the horizontal part, and the other end is slidably arranged in a connecting plate close to one side of the pull-out box.

[0006] By adopting the above technical solution, the elastic reset part is composed of at least two connecting plates and folded spring sheets, which can quickly compress and store elastic potential energy when the pull-out box is pulled. When the trigger rod moves to the upper end of the conveyor belt, the elastic potential energy is quickly released, pushing the pull-out box to pop out automatically. The user only needs to gently pull the pull-out box, and the linkage action of the conveyor belt and the trigger rod will automatically complete the storage and release of elastic potential energy, which greatly reduces the user's operating intensity, avoids the excessive elasticity of the traditional spring reset mechanism, and ensures the stability and reliability of the pop-up process.

[0007] Optionally, a limiting protrusion is fixed on the outer wall of the pull-out box, and a sliding rail is provided on the inner wall of the box body along the direction in which the pull-out box slides on the box body. A limiting groove connected to the sliding rail is provided at one end of the sliding rail close to the connecting plate, and when the pull-out box is slid into the box body, the limiting protrusion is engaged with the limiting groove.

[0008] By adopting the above technical solution, when the pull-out box is located in the box body, the elastic return part is in a compressed state, and the elastic return part will drive the pull-out box to move toward the connecting plate through the trigger rod. The pull-out box slides in the box body through the slide rail, which reduces the friction between the pull-out box and the box body. The arrangement of the limit protrusion and the limit groove blocking the pull-out box from further moving toward the connecting plate, avoiding the pull-out box from continuously generating a resistance pressure on the connecting plate and causing the elastic performance of the elastic return part to decrease, thereby ensuring the stability of the elasticity of the elastic return part.

[0009] Optionally, when the pull-out box is slidably disposed in the box body, the side of the pull-out box outside the box body is flush with the box body, the elastic reset member is in compression, and the horizontal portion is located at the end of the conveyor belt facing the bottom surface of the box body.

[0010] By adopting the above technical solution, when the pull-out box is pulled, the horizontal part will move synchronously with the conveyor belt. The horizontal part is set at the end of the conveyor belt to reduce the spacing compressed by the elastic return part, so that the elastic potential energy begins to be stored at the moment the pull-out box is pulled, and is quickly released when the horizontal part moves to the upper end of the conveyor belt, thereby accurately controlling the pop-up timing and ensuring the timeliness and reliability of the pop-up.

[0011] Optionally, both ends of the transmission plate are provided with fixed grooves, and the two ends of the conveyor belt are respectively located in the two fixed grooves. The transmission plate is provided with a clearance groove connected to the fixed groove on one end close to the elastic reset member, and a gap is left between the two sides of the vertical part and the groove wall of the clearance groove.

[0012] By adopting the above technical solution, by opening a clearance groove on both sides of the conveyor belt, an independent sliding space is provided for the vertical part of the trigger rod, thereby avoiding direct contact between the vertical part and the transmission plate, and avoiding friction and jamming between the vertical part and the transmission plate, thereby ensuring the operating stability of the trigger rod.

[0013] Optionally, the fixed plate separates the box body into a transmission chamber and a pop-up chamber, the pull-out box is slidably arranged in the transmission chamber, a pop-up box is slidably installed in the pop-up chamber, a connecting plate is also fixed to the lower end of the conveyor belt, and the end of the connecting plate away from the conveyor belt is fixedly connected to the bottom of the pop-up box.

[0014] By adopting the above technical solution, by dividing the box body into a transmission chamber and a pop-up chamber, independent movement of the pull-out box and the pop-up box is achieved. Through the linkage action of the conveyor belt, when the elastic reset member pops out the pull-out box, the pop-up box can be ejected synchronously, ensuring that the pull-out box and the pop-up box can be ejected at the same time, saving operation time and improving storage efficiency.

[0015] Optionally, the connecting plate includes a connecting portion and a supporting portion, the connecting portion is fixedly connected to the supporting portion, one end of the connecting portion away from the supporting portion is fixedly connected to the lower end of the conveyor belt, and a gap is left between the end of the vertical portion facing one end of the supporting portion and the supporting portion.

[0016] By adopting the above technical solution, when the conveyor belt moves, the connecting plate can transmit the movement to the supporting part, and a gap is left between the vertical part and the supporting part to reduce the contact between the lower end of the vertical part and the supporting part, ensuring that the horizontal part and the supporting part can move independently, thereby ensuring the reliability of the pop-up box ejecting.

[0017] Optionally, the surface of the connection portion facing the conveyor belt is fixedly connected to the transmission plate, and the width of the surface perpendicular to the conveying direction of the conveyor belt is greater than the width of the conveyor belt.

[0018] By adopting the above technical solution, when the elastic potential energy of the elastic reset part is released, the horizontal part may drive the conveyor belt to bounce upward. Since the width of the connecting part is greater than the width of the conveyor belt, the connecting part will abut against the transmission plate, effectively limiting the excessive bounce of the conveyor belt, ensuring the stability of the conveyor belt when the elastic potential energy is released, and avoiding failures or unstable operation caused by excessive bounce of the conveyor belt.

[0019] Optionally, a mounting seat for fixing the transmission plate is provided on the inner wall of the box body, and the mounting seat is fixedly connected to the transmission plate.

[0020] By adopting the above technical solution, a mounting seat is fixed between the transmission plate and the inner wall of the box body, thereby increasing the contact area between the transmission plate and the inner wall of the box body, ensuring the stability of the transmission plate, avoiding loosening or displacement of the transmission plate during use, and improving the reliability of the overall structure.

[0021] In summary, the present invention has at least the following beneficial effects: 1. The user only needs to gently pull the pull-out box, and the conveyor belt compresses the elastic reset part through the trigger rod, realizing the efficient storage and rapid release of elastic potential energy, ensuring the rapid ejection of the pull-out box, and greatly reducing the user's operation intensity.

[0022] 2. Through the linkage of the conveyor belt, the pull-out box and the pop-up box can move independently. When the elastic reset member pops out the pull-out box, the pop-up box can be ejected synchronously, thereby improving the storage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A cross-sectional view of a drawer box that pops up automatically when pulled; Figure 2 It is a schematic diagram of the installation structure of the pull-out box and the transmission assembly; Figure 3 It is a structural schematic diagram of an elastic reset member; Figure 4 It is a schematic diagram of the installation structure of the elastic reset member and the transmission assembly; Figure 5 for Figure 4 A front view of Figure 6 It is a cross-sectional view of the pull-out box and the pop-up box in the open state; Figure 7 A cross-sectional view of a pull-type automatic pop-up drawer box in an open state; Figure 8 Schematic diagram of the structure inside the box.

[0024] Figure numerals: 1. box body; 11. fixed plate; 12. transmission chamber; 13. pop-up chamber; 14. mounting seat; 15. slide rail; 16. limiting groove; 2. pull-out box; 21. limiting protrusion; 3. pop-up box; 4. elastic reset member; 41. connecting plate; 42. folding spring sheet; 43. trigger rod; 431. vertical part; 432. horizontal part; 5. transmission assembly; 51. transmission plate; 511. fixed groove; 512. give way groove; 52. conveyor belt; 53. connecting plate; 531. connecting part; 532. supporting part. DETAILED DESCRIPTION

[0025] The following is a further detailed description in conjunction with the accompanying drawings: As attached Figure 1 As shown, a pull-type automatic pop-up drawer box comprises a box body 1, a pull-out box 2 and a pop-up box 3. A vertical fixed plate 11 is fixed on the top side surface of the box body 1. The fixed plate 11 is relatively parallel to the pull-out box 2. The fixed plate 11 separates the box body 1 into a transmission cavity 12 and a pop-up cavity 13. The pull-out box 2 is slidably disposed in the transmission cavity 12, and the pop-up box 3 is slidably disposed in the pop-up cavity 13, and the pull-out box 2 is relatively parallel to the pop-up box 3.

[0026] An elastic reset member 4 is fixed on the side of the fixed plate 11 facing the pull-out box 2. The elastic reset member 4 includes at least two relatively parallel connecting plates 41, here three relatively parallel connecting plates 41, and folding spring sheets 42 are installed between adjacent connecting plates 41. The cross-section of the folding spring sheets 42 is arched. The folding spring sheets 42 are interconnected and superimposed through the interlayer of the connecting plates 41. The elastic reset member 4 stores elastic potential energy through the elasticity of the folding spring sheets 42.

[0027] As attached Figure 1 and attached Figure 2 As shown, a transmission assembly 5 is disposed at the bottom of the drawer box 2 , and the transmission assembly 5 includes a transmission plate 51 and a conveyor belt 52 .

[0028] The transmission plate 51 is located at the bottom of the pull-out box 2 and is relatively parallel to the pull-out box 2. Both sides of the transmission plate 51 are respectively abutted against the side walls inside the box body 1. A mounting seat 14 is fixed on the side walls inside the box body 1. The mounting seat 14 is vertically fixedly connected to one side of the transmission plate 51. The mounting seat 14 increases the contact area between the transmission plate 51 and the inner side wall of the box body 1, ensures the stability of the transmission plate 51, avoids loosening or displacement of the transmission plate 51 during use, and improves the reliability of the overall structure.

[0029] Fixed grooves 511 are provided at both ends of the transmission plate 51 along the sliding direction of the pull-out box 2 in the transmission chamber 12. The material of the conveyor belt 52 is flexible material, and the shape of the conveyor belt 52 is ring-shaped. The conveyor belt 52 is sleeved on the transmission plate 51. The conveyor belt 52 is slidably connected to the transmission plate 51, and the conveying direction of the conveyor belt 52 is the same as the elastic direction of the elastic reset member 4. The two ends of the conveyor belt 52 are respectively located in the two fixed grooves 511, and the side of the conveyor belt 52 facing away from the bottom surface of the box body 1 is fixedly connected to the bottom of the pull-out box 2, and the connection is located at the end of the conveyor belt 52 close to the elastic reset member 4.

[0030] As attached Figure 3 and attached Figure 4 As shown, the elastic reset member 4 also includes a trigger rod 43, which includes a vertical portion 431 and a horizontal portion 432. The vertical portion 431 is in the shape of a square column. There are two vertical portions 431. One end of the two vertical portions 431 is slidably disposed in the connecting plate 41 close to one side of the pull-out box 2, and the other end is fixedly connected to the two ends of the horizontal portion 432 respectively.

[0031] The horizontal portion 432 is in the shape of a round rod and is fixedly connected to the vertical portion 431 at a right angle. The horizontal portion 432 is fixedly connected to the end of the lower end of the conveyor belt 52. The horizontal portion 432 is arranged at the end of the conveyor belt 52 to reduce the spacing compressed by the elastic reset member 4, so that the horizontal portion 432 is quickly released when it moves to the upper end of the conveyor belt 52.

[0032] A clearance groove 512 connected to the fixing groove 511 is formed on one end of the transmission plate 51 close to the elastic reset member 4. The two clearance grooves 512 are respectively used for the two vertical parts 431 to slide, and gaps are left between the two sides of the vertical parts 431 and the groove walls of the clearance grooves 512, providing independent sliding space for the vertical parts 431 of the trigger rod 43, avoiding direct contact between the vertical parts 431 and the transmission plate 51, and avoiding friction and jamming between the vertical parts 431 and the transmission plate 51, thereby ensuring the operating stability of the trigger rod 43.

[0033] As attached Figure 4 and attached Figure 5 As shown, the transmission assembly 5 also includes a connecting plate 53, which is located on the side of the conveyor belt 52 facing away from the pull-out box 2. The connecting plate 53 is L-shaped and includes a connecting portion 531 and a supporting portion 532. One end of the connecting portion 531 is vertically fixedly connected to the supporting portion 532, and the other end is fixedly connected to the lower end of the conveyor belt 52. A gap is left between the end of the vertical portion 431 facing one end of the supporting portion 532 and the supporting portion 532, thereby reducing the contact between the end of the lower end of the vertical portion 431 and the supporting portion 532, ensuring that the horizontal portion 432 and the supporting portion 532 can move independently, thereby ensuring the reliability of the ejection of the ejection box 3.

[0034] As attached Figure 6 As shown, the surface of the connecting portion 531 facing the conveyor belt 52 is fixedly connected to the transmission plate 51, and the width of the surface perpendicular to the conveying direction of the conveyor belt 52 is greater than the width of the conveyor belt 52. When the elastic potential energy of the elastic reset member 4 is released, the horizontal portion 432 may drive the conveyor belt 52 to bounce upward. Since the width of the connecting portion 531 is greater than the width of the conveyor belt 52, the connecting portion 531 will abut against the transmission plate 51, which effectively limits the excessive bouncing of the conveyor belt 52, ensures the stability of the conveyor belt 52 when the elastic potential energy is released, and avoids failures or unstable operation caused by excessive bouncing of the conveyor belt 52.

[0035] The support portion 532 is relatively parallel to the pull-out box 2, one end of the support portion 532 is fixedly connected to the connecting portion 531, and the other end is located in the pop-up cavity 13 and fixedly connected to the bottom of the pop-up box 3. The pop-up box 3 and the pull-out box 2 move independently. Through the linkage action of the conveyor belt 52, when the elastic reset member 4 pops out the pull-out box 2, the pop-up box 3 can be ejected synchronously, thereby improving the storage efficiency.

[0036] As attached Figure 7 and attached Figure 8As shown, limiting protrusions 21 are fixed at both ends of the pull-out box 2 facing the connecting plate 41, and a slide rail 15 is provided on the inner wall of the box body 1 in the direction in which the pull-out box 2 slides on the box body 1, and a limiting groove 16 connected to the slide rail 15 is provided at one end of the slide rail 15 close to the connecting plate 41. When the pull-out box 2 is located in the box body 1, the elastic reset member 4 is in a compressed state, and the elastic reset member 4 will drive the pull-out box 2 to move toward the connecting plate 41, and the arrangement of the limiting protrusion 21 and the limiting groove 16 being engaged with each other blocks the pull-out box 2 from further moving toward the connecting plate 41, thereby preventing the pull-out box 2 from continuously generating a resisting pressure on the connecting plate 41, thereby reducing the elastic performance of the elastic reset member 4, and ensuring the elastic stability of the elastic reset member 4.

[0037] Working principle: When the user pulls the pull-out box 2, the bottom of the pull-out box 2 drives the trigger rod 43 to move through the conveyor belt 52, and the trigger rod 43 will compress the distance between the connecting plates 41 in the direction opposite to the direction in which the pull-out box 2 is pulled out, so that elastic potential energy is stored between two adjacent connecting plates 41 and the folding spring sheets 42. When the trigger rod 43 moves from the lower end of the conveyor belt 52 to the upper end of the conveyor belt 52, the elastic potential energy stored between the connecting plates 41 and the folding spring sheets 42 will be released, and then the conveyor belt 52 will be pushed along the pulling direction of the pull-out box 2 through the trigger rod 43, so that the pull-out box 2 is ejected from the transmission cavity 12.

[0038] At the same time, the lower end of the conveyor belt 52 is fixedly connected with a connecting plate 53. When the conveyor belt 52 is pushed along the pulling direction of the pull-out box 2 after the elastic potential energy is released, the lower end of the conveyor belt 52 will move toward the pop-up cavity 13, and then the connecting plate 53 will move toward the pop-up cavity 13, so that the pop-up box 3 is ejected from the pop-up cavity 13.

[0039] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of protection required by the present invention, it will be protected by the patent law.

Claims

1. A drawer box that automatically pops up when pulled, comprising a box body (1) and a drawer box (2) slidably arranged in the box body (1), characterized in that: A fixing plate (11) is fixed inside the box body (1), an elastic reset member (4) is installed between the fixing plate (11) and the drawer box (2), the elastic reset member (4) comprises at least two connecting plates (41), and a folding spring sheet (42) is installed between adjacent connecting plates (41); A transmission plate (51) parallel to the bottom surface of the box body (1) is fixed on the side wall inside the box body (1); a conveyor belt (52) is sleeved on the transmission plate (51) along the sliding direction of the drawer box (2); the upper end of the conveyor belt (52) is fixedly connected to the bottom of the drawer box (2); a trigger rod (43) is fixed to the lower end of the conveyor belt (52); the trigger rod (43) comprises a horizontal portion (432) and a vertical portion (431); the horizontal portion (432) is fixedly connected to the lower end of the conveyor belt (52); one end of the vertical portion (431) is fixedly connected to the horizontal portion (432), and the other end is slidably arranged in a connecting plate (41) close to one side of the drawer box (2).

2. The automatic pop-up drawer box according to claim 1, characterized in that: A limiting protrusion (21) is fixed on the outer wall of the pull-out box (2); a slide rail (15) is provided on the inner wall of the box body (1) along the direction in which the pull-out box (2) is slidably arranged on the box body (1); a limiting groove (16) is provided at one end of the slide rail (15) close to the connecting plate (41) and connected to the slide rail (15); when the pull-out box (2) is slidably arranged in the box body (1), the limiting protrusion (21) is engaged with the limiting groove (16).

3. The automatic pop-up drawer box according to claim 1, characterized in that: When the drawer box (2) is slidably arranged in the box body (1), the side of the drawer box (2) located outside the box body (1) is flush with the box body (1), the elastic return member (4) is compressed, and the horizontal portion (432) is located at the end of the conveyor belt (52) facing the bottom surface of the box body (1).

4. The automatic pop-up drawer box according to claim 1, characterized in that: Both ends of the transmission plate (51) are provided with fixing grooves (511), and both ends of the conveyor belt (52) are respectively located in the two fixing grooves (511). An end of the transmission plate (51) close to the elastic return member (4) is provided with a clearance groove (512) connected to the fixing groove (511), and gaps are left between the two sides of the vertical portion (431) and the groove wall of the clearance groove (512).

5. The automatic pop-up drawer box according to claim 1, characterized in that: The fixed plate (11) separates the box body (1) into a transmission chamber (12) and an ejection chamber (13); the pull-out box (2) is slidably arranged in the transmission chamber (12); a pop-up box (3) is slidably installed in the pop-up chamber (13); a connecting plate (53) is also fixed to the lower end of the conveyor belt (52); an end of the connecting plate (53) away from the conveyor belt (52) is fixedly connected to the bottom of the pop-up box (3).

6. The automatic pop-up drawer box according to claim 5, characterized in that: The connecting plate (53) comprises a connecting portion (531) and a supporting portion (532), wherein the connecting portion (531) is fixedly connected to the supporting portion (532), one end of the connecting portion (531) away from the supporting portion (532) is fixedly connected to the lower end of the conveyor belt (52), and a gap is left between the end of the vertical portion (431) facing one end of the supporting portion (532) and the supporting portion (532).

7. The automatic pop-up drawer box according to claim 6, characterized in that: The surface of the connecting portion (531) facing the conveyor belt (52) is fixedly connected to the transmission plate (51), and the width of the surface perpendicular to the conveying direction of the conveyor belt (52) is greater than the width of the conveyor belt (52).

8. The automatic pop-up drawer box according to claim 1, characterized in that: A mounting seat (14) for fixing the transmission plate (51) is provided on the inner side wall of the box body (1), and the mounting seat (14) is fixedly connected to the transmission plate (51).

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