Armrest box

Abstract

The armrest box comprises an upper frame body, a lower box body and a driving mechanism, the lower box body is arranged on an automobile floor, the lower box body comprises a cavity, the cavity is provided with an upward opening, the upper frame body is arranged in the cavity, the upper frame body can move up and down relative to the lower box body, the middle of the upper frame body is through up and down, and the upper frame body and the cavity of the lower box body are combined together to form a storage area. The upper frame body comprises a rail, and through the design of the rail and the roller drive, the upper frame body and the lower box body operate relatively to expand the space of the storage area, meanwhile, the moving structure can normally lift the upper frame body and has certain impact resistance, and the moving structure and driving equipment cannot be damaged due to impact; and the operation stability and the working tolerance of the equipment are ensured. And meanwhile, by using the structure, the use of a lubricant is reduced, and the possibility of pollution of the lubricant to the environment in the vehicle is avoided fundamentally.

Description

Technical Field

[0001] The utility model relates to the field of equipment for vehicle passengers, in particular to an armrest box. Background Art

[0002] During the use of passenger vehicles, there are often some items that require storage space. The storage space of the armrest box in the middle area of ​​the front row of passenger vehicles on the market is mostly fixed, which means that sometimes the items that users want to store cannot be put in normally if they are too large. If the storage space is designed to be too large, the volume of the armrest box will increase, hindering the arm movement of passengers, and placing smaller items in the overly large storage space will easily collide with the inner wall of the armrest box due to inertia during driving, causing noise and wear on the interior. Therefore, there is a need for an armrest box that can meet various storage needs by changing the size of the storage space.

[0003] At present, the solution to the above problem on the market is to separate the armrest box from top to bottom, and control the lifting and lowering of the upper box through a linear guide mechanism to solve the technical problem. However, it is found in actual operation that lubricants must be used when using linear guides to avoid the noise of linear guide movement. Lubricants will bring odor to the car, and will stain the interior when the lubricant leaks or during vehicle maintenance. When the passenger lowers the upper box, if inadvertently or accidentally, a large longitudinal impact is applied to the armrest box. When the upper box is impacted, the linear guide is prone to ball damage and motion structure jamming due to its structural problems under the action of large impact force, and cannot provide a buffering effect. In actual use, the same type of equipment under the current existing technology still has the problem of easy pinching of hands, which is not conducive to human intervention to deal with emergencies, and will cause accidental injuries to personnel during use. Utility Model Content

[0004] An embodiment of the utility model provides an armrest box, aiming to solve the problem that the structure of a split armrest box lacks impact resistance.

[0005] An armrest box, comprising:

[0006] A lower box body, the lower box body comprising a cavity, the cavity opening upward;

[0007] An upper frame is arranged in the cavity, the upper frame can move up and down relative to the lower box, and the upper frame includes a track, and the track is longitudinally arranged on the outer wall of the upper frame;

[0008] A driving mechanism is arranged on the wall of the cavity, and includes a roller group, a bracket and a driving group. The bracket is longitudinally arranged on the wall of the cavity. The driving group provides power for the roller group. The roller group is arranged on the bracket. The roller group includes a first roller and a second roller. A plurality of the first rollers are longitudinally arranged on the bracket. The first rollers do not contact each other. Every two adjacent first rollers contact one second roller. The first roller contacts the track.

[0009] In an armrest box provided by the utility model, the upper frame further comprises a groove, wherein the groove is arranged on the side wall of the upper frame, the groove is recessed from the side wall toward the inside of the upper frame, the groove extends longitudinally, and the track is arranged in the groove.

[0010] In an armrest box provided by the utility model, the track is made of elastic material.

[0011] In the armrest box provided by the utility model, it also includes a box cover, which covers the upper part of the upper frame, and the box cover is hinged to the upper frame.

[0012] In an armrest box provided by the utility model, the box cover also includes a storage sensor, and the storage sensor is arranged on a side of the box cover facing the cavity; and / or the lower box body also includes a temperature control system, and the temperature control system is arranged on the inner surface of the bottom of the lower box body.

[0013] In an armrest box provided by the utility model, the driving mechanism includes two groups of lifting components arranged adjacent to each other, each group of the lifting components includes the bracket and the roller group, and the two groups of the lifting components are driven by one driving group, wherein the driving group includes a driving motor and a transmission gear group, the driving motor is connected to the transmission gear group, and the transmission gear group is respectively connected to the roller groups of the two groups of the lifting components.

[0014] In an armrest box provided by the utility model, the transmission gear group includes a driving gear, a driven gear and a rotating shaft, the driving gear is installed on the output shaft of the driving motor, the driven gear is installed on the rotating shaft, the driving gear is meshed with the driven gear, and the two ends of the rotating shaft are respectively connected to the first roller or the second roller of each of the two groups of lifting assemblies.

[0015] In an armrest box provided by the utility model, the first rollers and the second rollers are arranged alternately and longitudinally.

[0016] In an armrest box provided by the utility model, the upper frame further comprises a pocket, the pocket is arranged at the lower end opening of the upper frame, and the pocket is arranged around the lower end opening.

[0017] In an armrest box provided by the utility model, the lower box body further comprises a slide rail, and the slide rail is arranged on a side of the bottom of the lower box body facing away from the cavity.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] In the technical solution of the utility model, a driving group is used to provide power, and a first roller and a second roller are alternately arranged on a longitudinally arranged roller group. The first roller drives the upper frame to move, and the second roller is transmitted between the first rollers. The first roller contacts the track and drives the track and the upper frame to move up and down through rolling friction, thereby converting the longitudinal movement force into lateral static friction force consumption, thereby reducing the longitudinal impact force, so that the transmission structure that drives the upper frame to move up and down has a certain impact resistance, and the transmission structure and the upper frame will not be damaged by impact, thereby ensuring the stable operation of the upper frame and the working tolerance during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A three-dimensional view of a height-adjustable armrest box according to an embodiment of the utility model;

[0022] Figure 2 This is a three-dimensional schematic diagram of the interior of the lower box body of the height-adjustable armrest box of the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the combination relationship of the height-adjustable armrest box of the embodiment of the utility model;

[0024] Figure 4 This is a cross-sectional view of a height-adjustable armrest box according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the electronic functions of the height-adjustable armrest box of the embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the relationship and position of the associated components of the height-adjustable armrest box of the embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the working position 1 of the height-adjustable armrest box according to an embodiment of the utility model;

[0028] Figure 8 This is a schematic diagram of the working position 2 of the height-adjustable armrest box according to an embodiment of the utility model;

[0029] Fig. 9 This is a schematic diagram of a driving mechanism of a height-adjustable armrest box according to an embodiment of the utility model;

[0030] Description of figure markings:

[0031] 1. Armrest box area; 10. Lower box body; 11. Cavity; 12. Temperature control system; 20. Upper frame; 21. Storage area; 22. Track; 23. Groove; 24. Guide; 25. Guide structure; 30. Drive mechanism; 31. Roller group; 311. First roller; 312. Second roller; 3122. Axle; 32. Bracket; 33. Drive group; 331. Drive motor; 3311. Driving gear; 332. Transmission gear group; 3321. Rotating shaft; 3322. Driven gear; 34. Motor controller; 40. Box cover; 41. Hinge; 43. Storage sensor; 50. Voice equipment; 60. Image acquisition equipment; 70. Vehicle system. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In the present disclosure, front and rear mean that the direction closer to the front of the vehicle in the length direction of the vehicle is front, and the direction closer to the rear of the vehicle is rear. The longitudinal direction refers to the height direction of the vehicle, and the transverse direction refers to the width direction of the vehicle.

[0035] The utility model provides an armrest box, which can solve the problem that the structure of a split armrest box lacks impact resistance.

[0036] Reference Figures 1 to 9The utility model embodiment proposes an armrest box, comprising: a lower box body 10, the lower box body 10 includes a cavity 11, and the cavity 11 is open upward; an upper frame body 20, arranged in the cavity 11, the upper frame body 20 can move up and down relative to the lower box body 10, the upper frame body 20 includes a track 22, and the track 22 is longitudinally arranged on the outer wall of the upper frame body 20; a driving mechanism 30, arranged on the wall of the cavity 11, including a roller group 31, a bracket 32 ​​and a driving group 33, the bracket 32 ​​is longitudinally arranged on the wall of the cavity 11, and the driving group 33 is The roller group 31 provides power, and the roller group 31 is arranged on the bracket 32. The roller group 31 includes a first roller 311 and a second roller 312. A plurality of the first rollers 311 are longitudinally arranged on the bracket 32. The first rollers 311 do not contact each other, and every two adjacent first rollers 311 contact one second roller 312, that is, a second roller 312 is provided between every two adjacent first rollers 311, and the first roller 311 contacts the second roller 312, and the first roller 311 contacts the track 22.

[0037] In this embodiment, refer to Figure 1 , 2 , 3, 4 and 9, the lower box body 10 serves as the basic structure of the armrest box and is directly fixedly connected to the floor of the car. A cavity 11 corresponding to the top view outline of the upper frame body 20 is opened in the upper part of the lower box body 10, which provides a basis for the combination of the upper frame body 20 and the lower box body 10 and the up and down movement of the upper frame body 20. The middle of the upper frame body 20 is connected from top to bottom, and together with the cavity 11, it forms a storage area 21. The upper frame body 20 can move up and down directly in the above-mentioned cavity 11, and the movement is powered by the driving mechanism 30. The driving structure is arranged on the wall surface of the cavity 11 of the lower box body 10, refer to Figure 2 There are two sets of driving structures arranged on the front wall and the rear wall in the cavity 11, wherein the front wall is the wall of the lower box 10 close to the front of the vehicle, and the rear wall is the wall of the lower box 10 close to the rear of the vehicle. The driving structure includes a roller group 31, a bracket 32 ​​and a driving group 33. Among them, the roller group 31 is divided into a first roller 311 and a second roller 312, the first roller 311 is arranged on the bracket 32 ​​along the longitudinal direction, and the second roller 312 is arranged between adjacent first rollers 311, and the driving group 33 includes a driving motor 331 and a transmission gear group 332. The driving motor 331 is operated by electricity to drive the transmission gear group 332 through a rotating shaft 3321. The rotating shaft 3321 is equipped with a driven gear 3322. The two ends of the rotating shaft 3321 are connected to the axle 3122 of the second roller 312 on different roller groups 31, which can drive the two groups of roller groups 31 arranged at the two ends of the coaxial axis to move. Refer to Figure 3The upper frame 20 is also provided with a track 22, which is arranged at the front and rear of the outer peripheral side of the upper frame 20. The roller group 31 on the driving structure corresponds to the track 22 position one by one, and the first roller 311 in the roller group 31 is in direct contact with the track 22. The first roller 311 on the front wall and the first roller 311 on the rear wall are respectively interference fit with the track 22 on the front and rear surfaces of the upper frame 20, so that the contact surface between the first roller 311 and the track 22 can provide enough pressure to provide friction to offset the gravity of the upper frame 20 and its upper components. Since there is no bottom surface at the lower end of the upper frame 20, the weight of the upper frame 20 will not be affected after the items are placed in the storage area 21.

[0038] Through this embodiment, relying on the structure of the height-adjustable armrest box proposed in the embodiment of the utility model, the driving structure can normally lift the upper frame 20 while having a certain impact resistance, and will not damage the driving structure and the upper frame 20 due to impact, thereby ensuring the stable operation of the upper frame 20 and the working tolerance during actual use. During use, when the upper frame 20 is impacted downward, the longitudinal motion force is converted into the lateral static friction force consumption between the rollers, thereby reducing the longitudinal impact force, so that the motion structure has a certain impact resistance. Further, when the impact is greater, the impact force is greater than the maximum static friction between the roller and the track 22, and there is sliding friction between the track 22 and the first roller 311, and the box will move downward directly, and will not drive the entire drive mechanism 30 to move, and will not cause the motion structure to be affected by the impact force, thereby avoiding damage to components.

[0039] In particular, when the user is in use, if an object is caught in the gap between the upper frame 20 and the lower box 10, a small force can be used in time, that is, human intervention can be used to forcibly interfere with the movement of the upper frame 20 to prevent further damage. At the same time, since this structure can avoid using lubricants as much as possible compared to the existing structure, the problem of lubricant pollution in the car is solved from the root. When the transmission gear set 332, the first roller 311 and the axle 3122 of the second roller 312 are made of POM material, lubricants can be completely eliminated.

[0040] In one embodiment, referring to Figure 1 and 3The upper frame 20 further includes a groove 23, which is arranged on the side wall of the upper frame 20. The groove 23 is recessed from the side wall toward the inside of the upper frame 20, and the groove 23 extends longitudinally. The track 22 is arranged in the groove 23. Specifically, the track 22 is arranged at the bottom of the groove 23. The groove 23 can be matched with the bracket 32 ​​and the roller group 31, and plays a guiding role for the upper frame 20 in terms of shape and position, so that the upper frame 20 will not be deviated in the left and right directions during use and up and down movement, and the upper frame 20 can go up and down straightly. Furthermore, the two side walls of the groove 23 form a certain shielding and protective effect relative to the track 22 at the bottom of the groove 23, thereby preventing the track 22 from being directly worn during use, for example when the upper frame 20 is raised, causing the upper frame 20 to move up and down in subsequent use due to the wear of the track 22. At the same time, it also prevents objects from being drawn between the track 22 and the roller when the upper frame 20 moves downward to a certain extent.

[0041] Further, refer to Figure 3 The upper frame 20 is provided with rectangular guides 24 on both sides of the front and rear ends, and the lower box 10 is provided with guide structures 25 at positions corresponding to the rectangular guides 24, and the guide structures 25 can make the guides 24 slide longitudinally therein. The coordination between the guides 24 and the guide structures 25 further improves the stability of the upper frame 20 in its up and down movement.

[0042] In one embodiment, referring to Figure 4 , 7 and 8, further comprising a box cover 40, which covers the upper frame 20, and the box cover 40 is hinged to the upper frame 20. It is common for the armrest box to use a box cover 40 with a hinge 41, but for the utility model, the flip cover design connected by the hinge 41 can automatically close after the upper frame 20 moves upward a certain distance after placing larger items in the armrest box, while the push-pull type and the double-open type box cover 40 cannot achieve this technical effect.

[0043] In one embodiment, referring to Figure 5 and 6The box cover 40 also includes a storage sensor 43, which is arranged on the side of the box cover 40 facing the cavity 11. The storage sensor 43 can be a range-finding radar, a temperature sensor or a gas sensor, etc., and is used to monitor the status of the items in the box. For example, the range-finding radar detects the distance from the item to the box cover 40, and sends the distance parameter to the vehicle system 70 with an intelligent preset program. The vehicle system 70 will judge according to the program. When it is considered that the item is too close to the box cover 40 after the box cover 40 is closed or the item is close to the box cover 40, it will send a command to the motor controller 34 to make the motor work to lift the upper frame 20 to increase the storage space.

[0044] In one embodiment, referring to Figure 5 , the lower box 10 also includes a temperature control system 12, and the temperature control system 12 is arranged on the inner surface of the bottom of the lower box 10. The temperature control system 12 has temperature control function and ventilation function. The temperature control system 12 works in combination with the above-mentioned temperature sensor and gas sensor. For example: after the user puts in a warm object, the temperature sensor can obtain the current temperature of the object, and according to the instructions input into the vehicle computer by the user through other devices, the temperature control system 12 executes the corresponding function of cooling or keeping the object warm. Another example: when the user puts in an object with odor or the object produces an odor after being placed for a long time, when the gas sensor detects that there are odor molecules in the box, the temperature control system 12 runs the ventilation mode to evacuate the box to keep a negative pressure in the box to prevent gas molecules from escaping and polluting the vehicle environment.

[0045] In one embodiment, the track 22 is made of elastic material. The use of the track 22 made of elastic material can make the track 22 and the roller have a greater pressure, further improve the friction between the roller and the track 22, and at the same time, the items in the storage area 21 can also apply thrust to the upper frame 20 due to inertia or buffer the upper frame 20 in a certain front-to-back direction when the vehicle is braked urgently, thereby reducing vibration and the corresponding noise.

[0046] In one embodiment, the driving mechanism 30 includes two sets of lifting components arranged adjacent to each other, each set of the lifting components includes the bracket 32 ​​and the roller set 31, and the two sets of lifting components are driven by one driving group 33, wherein the driving group 33 includes a driving motor 331 and a transmission gear set 332, the driving motor 331 is connected to the transmission gear set 332, and the transmission gear set 332 is respectively connected to the roller sets 31 of the two sets of lifting components. The purpose of setting two lifting groups to use one driving motor 331 and a common transmission gear set 332 is to ensure synchronization and balance of movement.

[0047] In one embodiment, the transmission gear set 332 includes a driving gear 3311, a driven gear 3322 and a rotating shaft 3321, the driving gear 3311 is installed on the output shaft of the driving motor 331, the driven gear 3322 is installed on the rotating shaft 3321, the driving gear 3311 is meshed with the driven gear 3322, and the two ends of the rotating shaft 3321 are respectively connected to the first roller 311 or the second roller 312 of each of the two groups of the lifting components. The drive group 33 is arranged on the bracket 32, and the drive group 33 includes a drive motor 331 and a transmission gear group 332. The transmission gear group 332 includes a driving gear 3311, a driven gear 3322 and a rotating shaft 3321. The driving gear 3311 is coaxial with the output shaft of the drive motor 331, and the driven gear 3322 is installed on the rotating shaft 3321. The driving gear 3311 is meshed with the driven gear 3322, and the two ends of the rotating shaft 3321 are respectively coaxially connected with the wheel axle 3122 of the same type of roller. The drive group 33 is arranged on the bracket 32, which is convenient for the overall assembly to the inner wall of the lower box 10, and can be installed as a whole when the drive mechanism 30 is installed. The driving motor 331 works, driving the coaxial driving gear 3311. Since the driven gear 3322 meshes with the driving gear 3311, the driven gear 3322 follows, and the driven gear 3322 is fixed on the rotating shaft 3321. The rotating shaft 3321 rotates with the driven gear 3322. The two ends of the rotating shaft 3321 are respectively connected to the wheel axles 3122 of the rollers in the roller groups 31 of the two lifting assemblies. Whether it is connected to the first roller 311 or the second roller 312, it can be, but the two ends must be the same type of rollers to ensure that the rolling speed acting on the track 22 is the same. The roller follows and drives the rollers in contact with it to move together so that the roller group 31 is linked to the overall operation. Due to the rotation of the first roller 311, the upper frame 20 is driven to move. Using the same rollers on both sides of the rotating shaft 3321 can achieve the movement synchronization of the upper frame 20, ensure stable operation, and avoid skewness to cause noise and component wear.

[0048] In one embodiment, the first rollers 311 and the second rollers 312 are arranged alternately in a longitudinal direction. The longitudinal arrangement between the first rollers 311 and the second rollers 312 can reduce the front-to-back dimension of the entire driving mechanism 30, thereby leaving a longer front-to-back space for the upper frame 20, so that the interior of the upper frame 20 has a larger storage space.

[0049] In one embodiment, the upper frame 20 further includes a pocket, which is arranged at the lower end opening of the upper frame 20 and is arranged around the lower end opening. Figure 1After items are placed in the upper frame 20, they may directly contact the driving mechanism 30, causing the upper frame 20 to move unsmoothly, so a pocket is added and fixed to the lower edge of the upper frame 20, with an opening facing upward, to block the contact between the items placed in the armrest box and the driving mechanism 30. The volume of the pocket used is larger than the area of ​​the cavity 11. Even if the upper frame 20 is raised to the highest position, the pocket will not be stretched, and the bottom of the pocket is always in contact with the bottom surface of the lower box 10. At the same time, the pocket has ventilation capabilities and does not affect the operation of the temperature control system 12.

[0050] In one embodiment, the lower box body 10 further includes a slide rail, and the slide rail is arranged on a side of the bottom of the lower box body 10 facing away from the cavity 11. Figure 6 Since the height of the upper frame 20 of the armrest box increases after placing items, it may affect the elbow space of the user when riding and driving. Therefore, in order to avoid this situation, a controllable slide rail is arranged at the lower part of the armrest box, which can move the armrest box backward, so as to release the space in the elbow area. Similarly, when the armrest box needs to return to its original position, it only needs to be moved forward to the front end through the slide rail, and it can be used normally.

[0051] In one embodiment, referring to Figure 6 , and also includes a voice device 50, which is arranged in the car, and the voice device 50 includes a receiving unit and a sound unit. Through the voice device 50, the user can express the meaning of the command through voice, and the receiving unit sends the voice information to the vehicle system 70 after receiving it, so as to control the lifting and lowering of the armrest box and the operation of other electronic control functions on the armrest box according to the preset intelligent program. The sound unit will feedback the execution result and the situation inside the box detected by the sensor to the user in the form of preset voice to ensure that the user understands the working situation of the armrest box.

[0052] In one embodiment, referring to Figure 6 , and also includes an image acquisition device 60, which is arranged in the area above the armrest box in the car. The image acquisition device 60 can collect image and video data of the armrest box area 1 and send it to the vehicle system 70. The vehicle system 70 makes a judgment based on the intelligent program in the vehicle system 70 so that the armrest box can cooperate with the user's behavior. For example: when the image acquisition device 60 captures that the user wants to put a long object such as an umbrella into the armrest box, the intelligent program will issue an instruction when the image acquisition device 60 captures the object information, and the armrest box will be raised in advance to facilitate the user to store. For example: when the image acquisition device 60 captures that the user's clothes are sandwiched between the upper frame 20 and the lower box 10 of the armrest box, the intelligent program will issue an instruction when the image acquisition device 60 captures the object information, inform the user through voice prompts, and at the same time stop the ongoing movement of the upper frame 20 to avoid further harm.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An armrest box, characterized in that: include: A lower box body, the lower box body comprising a cavity, the cavity opening upward; An upper frame is arranged in the cavity, the upper frame can move up and down relative to the lower box, and the upper frame includes a track, and the track is longitudinally arranged on the outer wall of the upper frame; A driving mechanism is arranged on the wall of the cavity, and includes a roller group, a bracket and a driving group. The bracket is longitudinally arranged on the wall of the cavity. The driving group provides power for the roller group. The roller group is arranged on the bracket. The roller group includes a first roller and a second roller. A plurality of the first rollers are longitudinally arranged on the bracket. The first rollers do not contact each other. Every two adjacent first rollers contact one second roller. The first roller contacts the track.

2. An armrest box as claimed in claim 1, characterized in that: The upper frame body further comprises a groove, wherein the groove is arranged on the side wall of the upper frame body, the groove is recessed from the side wall toward the inside of the upper frame body, the groove extends longitudinally, and the track is arranged in the groove.

3. An armrest box as claimed in claim 2, characterized in that: The track is made of elastic material.

4. The armrest box according to claim 1, characterized in that: It also includes a box cover, which covers the upper frame, and the box cover is hinged to the upper frame.

5. An armrest box as claimed in claim 4, characterized in that: The box cover also includes a storage sensor, and the storage sensor is arranged on a side of the box cover facing the cavity; and / or, The lower box body also includes a temperature control system, and the temperature control system is arranged on the inner surface of the bottom of the lower box body.

6. The armrest box according to claim 1, characterized in that: The driving mechanism includes two groups of lifting components arranged adjacent to each other, each group of the lifting components includes the bracket and the roller group, and the two groups of the lifting components are driven by one driving group, wherein the driving group includes a driving motor and a transmission gear group, the driving motor is connected to the transmission gear group, and the transmission gear group is respectively connected to the roller groups of the two groups of the lifting components.

7. An armrest box as claimed in claim 6, characterized in that: The transmission gear set includes a driving gear, a driven gear and a rotating shaft. The driving gear is installed on the output shaft of the driving motor, and the driven gear is installed on the rotating shaft. The driving gear is meshed with the driven gear, and both ends of the rotating shaft are respectively connected to the first roller or the second roller of each of the two groups of lifting assemblies.

8. The armrest box according to claim 1, characterized in that: The first rollers and the second rollers are arranged alternately and longitudinally.

9. The armrest box according to claim 1, characterized in that: The upper frame also includes a pocket, which is arranged at the lower end opening of the upper frame and is arranged around the lower end opening.

10. The armrest box according to claim 1, characterized in that: The lower box body also includes a slide rail, and the slide rail is arranged on a side of the bottom of the lower box body facing away from the cavity.

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