Drawing structure and weighing device

Abstract

The utility model discloses a drawing structure and a weighing device. The drawing structure and the weighing device are widely applied to the technical field of weighing devices. The drawing structure comprises a bracket and a fixing frame, the fixing frame is installed at the bottom of the base, the bracket is used for installing the keyboard, the bracket is provided with a first rolling wheel, the first rolling wheel is used for driving the bracket to move, the first rolling wheel abuts against the fixing frame and can rotate relative to the fixing frame, and the fixing frame is provided with a first limiting part and a second limiting part in a spaced mode. The first limiting part penetrates through the bottom of the fixing frame to be used for containing part of the first roller, the first roller is used for moving between the first limiting part and the second limiting part, the fixing frame is provided with a second roller, the second roller is located on the side, away from the first limiting part, of the second limiting part, and the bracket abuts against the second roller. And when the first roller is located at the first limiting part, the first roller and the second roller are respectively supported at two ends of the bracket. Therefore, the keyboard can be stored and pulled easily, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of weighing devices, and particularly to a drawer structure and a weighing device. Background Art

[0002] Existing weighing devices, especially cash registers, usually come with a separate keyboard. However, since the display screen of a cash register usually has a touch screen function, the keyboard is used less frequently and is left unused most of the time, resulting in the keyboard being prone to gathering dust. Also, due to the low usage frequency of the keyboard, to save space, the power cord of the keyboard is usually unplugged and stored in a cabinet, and then reconnected when the keyboard is needed. This not only makes the operation troublesome but also affects efficiency. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a drawer structure that can facilitate the storage and pulling out of the keyboard and improve work efficiency.

[0004] This application also provides a weighing device with the above-mentioned drawer structure.

[0005] The drawer structure according to the first aspect embodiment of this application includes:

[0006] A bracket for installing the keyboard, the bracket is provided with a first roller for driving the bracket to move.

[0007] A fixing frame, the first roller abuts against the fixing frame and is rotatable relative to the fixing frame. The fixing frame is provided with a first limiting portion and a second limiting portion at intervals. The first limiting portion penetrates the bottom of the fixing frame to accommodate part of the first roller. The first roller is used to move between the first limiting portion and the second limiting portion. The fixing frame is provided with a second roller. The second roller is located on the side of the second limiting portion away from the first limiting portion. The bracket abuts against the second roller. When the first roller is located in the first limiting portion, the first roller and the second roller respectively support both ends of the bracket.

[0008] The drawer structure according to the embodiments of this application has at least the following beneficial effects:

[0009] By setting the first roller of the bracket to rest against the fixed frame and be rotatable relative to the fixed frame, the fixed frame is provided with a first limiting portion and a second limiting portion at intervals. The first limiting portion penetrates through the bottom of the fixed frame for accommodating part of the first roller, so that the first limiting portion can not only be used to limit the movement stroke of the first roller to achieve the limiting effect, but also meet the requirement that the first roller disengages from the first limiting portion to drive the fixed frame to move between the first limiting portion and the second limiting portion. This is conducive to the positioning and release of the first roller by the fixed frame, facilitating the switching of the keyboard between the storage state and the pulled-out use state, that is, facilitating the storage and pulling of the keyboard, and further conducive to improving work efficiency. At the same time, a second roller is provided on the side of the fixed frame away from the first limiting portion of the second limiting portion. When the first roller is located at the first limiting portion, the first roller and the second roller respectively support both ends of the bracket, which can not only meet the movement requirement of the first roller between the two limiting portions, but also use the second roller to support one end of the bracket away from the first roller, which is beneficial to improving the movement smoothness and structural stability of the bracket and the keyboard, avoiding the situation of jamming during the pulling of the bracket, and further conducive to improving the efficiency of the bracket driving the keyboard to move, achieving the effect of further improving work efficiency.

[0010] According to some embodiments of the first aspect of the present application, the fixed frame is further provided with a third limiting portion, the third limiting portion is located on the side of the first limiting portion away from the second limiting portion, and the third limiting portion is used to abut against the first roller.

[0011] According to some embodiments of the first aspect of the present application, the second limiting portion extends from the fixed frame towards the bracket and is spaced from the bracket, and the second limiting portion is used to abut against the first roller.

[0012] According to some embodiments of the first aspect of the present application, the fixed frame includes a support portion and a supporting portion, the supporting portion is connected to the bottom of the support portion, the first limiting portion is provided on the supporting portion, the second limiting portion penetrates through the support portion or the supporting portion, and an observation window is provided through the support portion. When the first roller abuts against the second limiting portion, it corresponds to the observation window.

[0013] According to some embodiments of the first aspect of the present application, the second limiting portion is connected to the side wall of the observation window and extends from the support portion towards the bracket.

[0014] According to some embodiments of the first aspect of the present application, the number of the fixing brackets is two. Each fixing bracket includes a supporting portion and a supporting part. The supporting part is connected to the bottom of the supporting portion. The first limiting portion penetrates through the supporting part. The supporting portions of the two fixing brackets are arranged at intervals, and the supporting parts of the two fixing brackets face each other. The bracket is located between the two supporting portions. The number of the first rollers is two, and the two first rollers are respectively arranged on both sides of the keyboard and correspond to the two fixing brackets one by one.

[0015] According to some embodiments of the first aspect of the present application, the second roller is rotatably connected to the supporting portion. One end of the supporting part close to the second roller is hollowed out to form a first avoidance groove. The second roller is located in the first avoidance groove, and the radius of the second roller is greater than the distance from the center of the second roller to the supporting part.

[0016] The weighing device according to the embodiments of the second aspect of the present application includes a base, a keyboard, and the pulling and pushing structure as described in the first aspect above. The keyboard is installed on the bracket, and the fixing bracket is installed on the bottom of the base.

[0017] The weighing device according to the embodiments of the present application has at least the following beneficial effects: it is beneficial to the storage and pulling and pushing of the keyboard, and improves work efficiency.

[0018] According to some embodiments of the second aspect of the present application, the top of the bracket is hollowed out at the position of the first roller to form a second avoidance groove. The base is provided with a limiting groove with an opening facing the ground, and the limiting groove is used to accommodate part of the first roller when the first roller abuts against the second limiting portion.

[0019] According to some embodiments of the second aspect of the present application, the weighing device further includes feet, and the feet are movably connected to the bottom of the base so that the distance from the base to the ground can be adjusted.

[0020] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present application with reference to the drawings and embodiments, where:

[0022] Figure 1 is a schematic structural diagram of the weighing device disclosed in the embodiments of the present application;

[0023] Figure 2 is an exploded schematic diagram of the weighing device disclosed in the embodiments of the present application;

[0024] Figure 3Partial cross-sectional view of the weighing device disclosed in the embodiments of the present application;

[0025] Figure 4 Schematic structural diagram of the drawing structure disclosed in the embodiments of the present application;

[0026] Figure 5 Side view of the drawing structure disclosed in the embodiments of the present application;

[0027] Figure 6 Exploded view of the drawing structure disclosed in the embodiments of the present application from one perspective;

[0028] Figure 7 Exploded view of the drawing structure disclosed in the embodiments of the present application from another perspective.

[0029] Reference numerals:

[0030] 100, weighing device; 10, drawing structure; 11, bracket; 1101, first roller; 111, first plate member; 112, second plate member; 113, third plate member; 1130, second avoidance groove; 12, fixing frame; 121, support portion; 1210, observation window; 122, supporting portion; 1220, first avoidance groove; 123, installation portion; 1201, first limiting portion; 1202, second limiting portion; 1203, second roller; 1204, third limiting portion; 13, connecting frame; 131, fourth limiting portion;

[0031] 20, keyboard; 30, base; 31, limiting groove; 40, foot. Detailed description of the embodiments

[0032] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0034] In the description of the present application, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, and understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] In the description of the present application, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific content of the technical solution.

[0036] In the description of the present application, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The embodiment of the present application discloses a drawer structure, which can be applied to a weighing device to realize the storage and drawing of a keyboard.

[0038] To facilitate the understanding of the structures of the drawer structure and the weighing device, the drawer structure and the weighing device will be further described below in combination with embodiments and drawings.

[0039] Please refer to Figures 1 to 3 , the embodiment of the present application provides a weighing device 100, including a drawer structure 10, a keyboard 20, and a base 30. The keyboard 20 is installed on the drawer structure 10, and the drawer structure 10 is installed at the bottom of the base 30. Specifically, please combine Figures 4 to 6, the drawable structure 10 includes a bracket 11 and a fixing bracket 12. The fixing bracket 12 is installed at the bottom of the base 30. The bracket 11 is used to install the keyboard 20. The bracket 11 is provided with a first roller 1101, and the first roller 1101 is used to drive the bracket 11 to move. The first roller 1101 abuts against the fixing bracket 12 and is rotatable relative to the fixing bracket 12. The fixing bracket 12 is provided with a first limiting portion 1201 and a second limiting portion 1202 at intervals. The first limiting portion 1201 penetrates through the bottom of the fixing bracket 12 to accommodate a part of the first roller 1101. The first roller 1101 is used to move between the first limiting portion 1201 and the second limiting portion 1202. The fixing bracket 12 is provided with a second roller 1203. The second roller 1203 is located on the side of the second limiting portion 1202 away from the first limiting portion 1201. The bracket 11 abuts against the second roller 1203. When the first roller 1101 is located in the first limiting portion 1201, the first roller 1101 and the second roller 1203 respectively support both ends of the bracket 11.

[0040] The drawer structure 10 and the weighing device 100 according to the embodiments of the present application are configured such that the first roller 1101 of the bracket 11 abuts against the fixed frame 12 and is rotatable relative to the fixed frame 12. The fixed frame 12 is provided with a first limiting portion 1201 and a second limiting portion 1202 at intervals. The first limiting portion 1201 penetrates through the bottom of the fixed frame 12 to accommodate a part of the first roller 1101. Thus, the first limiting portion 1201 can not only be used to limit the movement stroke of the first roller 1101 to achieve the limiting effect, but also meet the requirement that the first roller 1101 disengages from the first limiting portion 1201 to drive the fixed frame 12 to move between the first limiting portion 1201 and the second limiting portion 1202. This is beneficial for the fixed frame 12 to position and release the restriction on the first roller 1101, facilitating the switching of the keyboard 20 between the storage state and the pulled-out and used state, that is, facilitating the storage and pulling of the keyboard 20, and further improving work efficiency. Taking the case where the first roller 1101 is located at the first limiting portion 1201 when the bracket 11 is stored as an example, when the keyboard 20 is idle, the keyboard 20 can be stored by the limitation of the first limiting portion 1201. When the keyboard 20 needs to be used, the keyboard 20 can be pulled out by pulling the fixed frame 12 and using the movement of the first roller 1101 and the limitation of the second limiting portion 1202 to meet the usage requirement of the keyboard 20, thereby facilitating the storage and pulling of the keyboard 20 and improving work efficiency. At the same time, a second roller 1203 is provided on the side of the fixed frame 12 away from the first limiting portion 1201 of the second limiting portion 1202. When the first roller 1101 is located at the first limiting portion 1201, the first roller 1101 and the second roller 1203 respectively support both ends of the bracket 11. Thus, it can not only meet the movement requirement of the first roller 1101 between the two limiting portions, but also use the second roller 1203 to support the end of the bracket 11 away from the first roller 1101, which is beneficial for improving the movement smoothness and structural stability of the bracket 11 and the keyboard 20, avoiding the situation of jamming during the pulling of the bracket 11, and further improving the efficiency of the bracket 11 driving the keyboard 20 to move, achieving the effect of further improving work efficiency.

[0041] Further, the second roller 1203 is disposed on a side of the second limiting portion 1202 away from the first limiting portion 1201. The first roller 1101 is configured to move between the first limiting portion 1201 and the second limiting portion 1202. When the first roller 1101 drives the bracket 11 and the keyboard 20 to move to the first limiting portion 1201, the first roller 1101 can be snapped into the first limiting portion 1201 under the weight of the bracket 11 and the keyboard 20, thereby realizing the limitation of the first roller 1101. At this time, the first roller 1101 does not move back and forth, ensuring the structural stability and reliability of the keyboard 20 in the storage state or the pulled-out and used state, and avoiding the situation that the keyboard 20 is displaced due to the shaking of the weighing device 100 or the tabletop (or ground). When the keyboard 20 needs to be pulled out for use or stored, only a pulling force needs to be applied to the bracket 11 to drive the first roller 1101 to disengage from the first limiting portion 1201, which can meet the rotation requirement of the first roller 1101, so that the first roller 1101 can drive the bracket 11 and the keyboard 20 to move in the direction of the second limiting portion 1202, realizing the pulling out or storage of the keyboard 20. It can be seen that the method of limiting the first roller 1101 by the first limiting portion 1201 penetrating the bottom of the fixing frame 12 can facilitate the positioning and release of the first roller 1101, improve the flexibility of the movement of the bracket 11, and thus is beneficial to the storage and pulling of the keyboard 20, improving work efficiency. In addition, the arrangement of the first limiting portion 1201 penetrating the bottom of the fixing frame 12 is also beneficial for the user to observe whether the first roller 1101 moves in place, confirm the reliability of the limit, and facilitate the user to check the cause of the jamming during the movement process.

[0042] Optionally, considering that during the use of the weighing device 100, the item to be measured needs to occupy a certain space on the tabletop (or ground), it is necessary to reduce the occupied area of the weighing device 100 on the tabletop and reduce the size of the pulling structure 10 in the storage state. Based on this, when the keyboard 20 is in the storage state, the first roller 1101 is located in the first limiting portion 1201, and when the keyboard 20 is in the pulled-out and used state, the first roller 1101 is located at the second limiting portion 1202. Thus, when the keyboard 20 is in the storage state, the overlapping area between the bracket 11 and the fixing frame 12 increases, which is beneficial to reducing the size of the pulling structure 10 and the occupied area of the weighing device 100 on the tabletop. At this time, the first roller 1101 is snapped into the first limiting portion 1201, which can be beneficial to improving the structural stability and reliability of the keyboard 20 in the storage state.

[0043] It can be understood that in some other embodiments, when the keyboard 20 is in the storage state, the first roller 1101 can also be located at the second limiting portion 1202, and when the keyboard 20 is in the pulled-out and used state, the first roller 1101 is located in the first limiting portion 1201.

[0044] Optionally, the fixing bracket 12 is further provided with a third limiting portion 1204, which is located on the side of the first limiting portion 1201 away from the second limiting portion 1202, and the third limiting portion 1204 is used to abut against the first roller 1101.

[0045] In this way, the movement of the first roller 1101 is blocked by the third limiting portion 1204 to further limit the movement stroke of the first roller 1101 when the keyboard 20 is stored, so as to realize the positioning of the keyboard 20 in the stored state and avoid the situation that the first roller 1101 drives the bracket 11 out of the fixing bracket 12.

[0046] Optionally, the third limiting portion 1204 can be a limiting plate, a limiting block or a limiting strip, etc., which can be specifically set according to actual needs and are not limited here.

[0047] In some embodiments, the second limiting portion 1202 extends from the fixing bracket 12 towards the bracket 11 and is spaced apart from the bracket 11, and the second limiting portion 1202 is used to abut against the first roller 1101.

[0048] In this way, the movement of the first roller 1101 is blocked by the second limiting portion 1202, which can limit the movement stroke of the first roller 1101 when the keyboard 20 is pulled out for use, so as to realize the positioning of the keyboard 20 in the pulled-out and used state and avoid the situation that the first roller 1101 drives the bracket 11 out of the fixing bracket 12.

[0049] Please refer to Figure 6 and Figure 7 , optionally, the fixing bracket 12 includes a supporting portion 121 and a supporting part 122, the supporting part 122 is connected to the bottom of the supporting portion 121, the first limiting portion 1201 penetrates through the supporting part 122, and the second limiting portion 1202 and the third limiting portion 1204 are arranged on the supporting portion 121 or the supporting part 122.

[0050] The supporting part 121 supports the supporting part 122 and reserves a moving space for the first roller 1101 and the second roller 1203. At the same time, the first limiting part 1201 is disposed through the supporting part 122. When the first roller 1101 drives the bracket 11 and the keyboard 20 to move to the storage state by using the weights of the bracket 11 and the keyboard 20, the first roller 1101 can be snapped into the first limiting part 1201 under the action of gravity. At the same time, the first roller 1101 is abutted by the third limiting part 1204 to realize the limiting of the bracket 11 and the keyboard 20, so that the keyboard 20 can be kept stable in the storage state. When the keyboard 20 needs to be pulled out for use, only a pulling force pointing from the first limiting part 1201 to the second limiting part 1202 needs to be applied to the bracket 11 to overcome the gravity of the bracket 11 and the keyboard 20, the resistance of the first limiting part 1201 to the first roller 1101 and the frictional force, so that the first roller 1101 can be disengaged from the first limiting part 1201 and drive the keyboard 20 to move in the direction of the second limiting part 1202 to meet the requirement of pulling out the keyboard 20 for use.

[0051] Optionally, the supporting part 121 is provided with an observation window 1210 through which the first roller 1101 abuts against the second limiting part 1202 corresponding to the observation window 1210. Thus, it is convenient for the user to observe the position of the first roller 1101 and confirm whether the first roller 1101 reaches the second limiting part 1202, which is beneficial for the user to check the reason why the bracket 11 cannot drive the first roller 1101 to pull out and move or the movement is stuck, and avoid the situation of damaging the pulling structure 10 due to misoperation.

[0052] Optionally, the second limiting part 1202 is connected to the side wall of the observation window 1210 and extends from the supporting part 121 towards the bracket 11. In this way, the observation window 1210 can be formed by bending the second limiting part 1202 from the supporting part 121 towards the bracket 11, which is beneficial to the manufacturing and forming of the pulling structure 10 and simplifies the manufacturing process of the pulling structure 10. At the same time, it can ensure that the contact relationship between the second limiting part 1202 and the first roller 1101 can be observed through the observation window 1210, so as to facilitate the confirmation of the position and movement reliability of the first roller 1101.

[0053] In some embodiments, the number of the fixing frames 12 is two, the supporting parts 121 of the two fixing frames 12 are arranged at intervals, and the supporting parts 122 of the two fixing frames 12 are arranged facing each other. The bracket 11 is located between the two supporting parts 121, and the number of the first rollers 1101 is two. The two first rollers 1101 are respectively arranged on both sides of the keyboard 20 and correspond to the two fixing frames 12 one by one. Thus, it is beneficial to reduce the weight of the pulling structure 10, so as to reduce the weight of the weighing device 100.

[0054] Optionally, the fixing bracket 12 further includes a mounting portion 123. The mounting portion 123 is connected to one end of the supporting portion 121 away from the supporting portion 122 and extends in a direction away from the bracket 11. The mounting portion 123 is detachably connected to the bottom of the base 30.

[0055] In this way, the fixing bracket 12 has a Z-shaped structure, which is beneficial to the assembly of the fixing bracket 12 and the base 30, and can ensure the spatial dimension from the supporting portion 122 to the bottom of the base 30, so as to reserve sufficient moving space for the movement of the first roller 1101 and the second roller 1203. At the same time, the mounting portion 123 is detachably connected to the base 30, which is beneficial to the replacement of the pulling structure 10 and helps to reduce the maintenance cost of the weighing device 100.

[0056] It can be understood that in some other embodiments, the fixing bracket 12 can also be connected to the base 30 through the supporting portion 121, and the connection method can be any one of welding, snap connection or bonding, etc.

[0057] Optionally, the second roller 1203 is rotatably connected to the supporting portion 121. One end of the supporting portion 122 close to the second roller 1203 is hollowed out to form a first avoidance groove 1220. The second roller 1203 is located in the first avoidance groove 1220, and the radius of the second roller 1203 is greater than the distance from the center of the second roller 1203 to the supporting portion 122. Thereby, it is beneficial to increase the size of the second roller 1203 to improve the load-bearing capacity and movement smoothness of the second roller 1203, and further improve the reliability of the pulling structure 10.

[0058] In some embodiments, considering that when the keyboard 20 is in the storage state, the first roller 1101 and the second roller 1203 respectively support at both ends of the bracket 11. The first roller 1101 moves to abut against the third limiting portion 1204 and is caught in the first limiting portion 1201 under the weight of the bracket 11 and the keyboard 20, thereby realizing the front-back limitation of the first roller 1101. When the keyboard 20 is in the pulled-out and used state, the first roller 1101 and the second roller 1203 simultaneously support at the same end of the bracket 11. At this time, one end of the bracket 11 away from the first roller 1101 will droop towards the ground under the action of gravity, causing one end of the bracket 11 close to the first roller 1101 to tilt upwards, resulting in the movement of the bracket 11 when the user uses the keyboard 20. Based on this, a second avoidance groove 1130 is hollowed out at the top of the bracket 11 at the position of the first roller 1101, and the base 30 is provided with a limiting groove 31 with an opening facing the ground (see Figure 3 ), and the limiting groove 31 is used to accommodate part of the first roller 1101 when the first roller 1101 abuts against the second limiting portion 1202.

[0059] When the keyboard 20 is in the pulled-out and in-use state, the first roller 1101 can be limited by the second limiting part 1202 and the limiting groove 31 at the same time, so as to facilitate restricting the forward and backward movement of the first roller 1101, improve the stability of the bracket 11, and avoid the situation that the bracket 11 shakes or displaces when the user uses the keyboard 20.

[0060] Optionally, the radius of the first roller 1101 is greater than the distance from the center of the first roller 1101 to the top of the fixing frame 12, so as to be conducive to increasing the size of the first roller 1101, improving the load-bearing capacity and movement smoothness of the first roller 1101, and further improving the reliability of the pulling and pushing structure 10.

[0061] Optionally, the bracket 11 includes a first plate member 111, a second plate member 112 and a third plate member 113. The first plate member 111 and the third plate member 113 are respectively connected to both ends of the second plate member 112 and extend in opposite directions. The keyboard 20 is mounted on the first plate member 111. The first roller 1101 is rotatably connected to the second plate member 112 and is located on the side of the second plate member 112 away from the keyboard 20. The third plate member 113 abuts against the second roller 1203, and the second avoidance groove 1130 is disposed through the third plate member 113 and is located at the end of the third plate member 113.

[0062] In this way, the bracket 11 has a Z-shaped structure. The keyboard 20 is supported by the first plate member 111, a sufficiently large moving space is reserved for the first roller 1101 by the second plate member 112, and the movement stability of the bracket 11 is improved by the third plate member 113 abutting against the second roller 1203. At the same time, the first roller 1101 is located on the side of the second plate member 112 away from the keyboard 20, which can separate the keyboard 20 installation area and the roller movement area, so as to be conducive to improving the movement reliability of the pulling and pushing structure 10 and avoiding the situation of structural interference between the keyboard 20 and the first roller 1101. In addition, the second avoidance groove 1130 is located at the end of the third plate member 113, which can also be conducive to increasing the size of the first roller 1101, ensuring the structural reliability of the bracket 11 when the first roller 1101 cooperates with the second avoidance groove 1130, and avoiding the situation of structural interference between the bracket 11 and the base 30.

[0063] Optionally, the number of the brackets 11 is two. The two brackets 11 and the two fixing frames 12 correspond to each other one by one, and the second plate members 112 of the two brackets 11 are arranged at intervals, and the first plate members 111 of the two brackets 11 face each other, so as to be conducive to reducing the weight of the pulling and pushing structure 10 and thus reducing the weight of the loading device.

[0064] Optionally, the connection between the keyboard 20 and the first board member 111 can be any one of threaded connection, bonding, snap connection, contact connection, etc., which can be specifically set according to actual requirements and are not limited herein.

[0065] In some embodiments, to ensure that the keyboard 20 can be fully exposed when pulled out for use, so as to facilitate the user to use the keyboard 20. Based on this, the length of the bracket 11 is greater than the length of the keyboard 20. The pulling structure 10 further includes a connecting frame 13. The connecting frame 13 is located between the two brackets 11, and both sides of the connecting frame 13 are respectively connected to one end of the bracket 11 away from the keyboard 20. Thereby, while ensuring that the keyboard 20 can be fully exposed for the user to use, the structural stability of the pulling structure 10 can be improved.

[0066] Optionally, considering that when the keyboard 20 and the first board member 111 are in contact connection, during the process of the first roller 1101 driving the bracket 11 to move, the keyboard 20 may overcome the friction force and displace relative to the first board member 111. Based on this, the connecting frame 13 is provided with a fourth limiting portion 131 extending from the first board member 111 to the base 30, and the fourth limiting portion 131 is spaced from the base 30. Thereby, the keyboard 20 can be limited when the keyboard 20 moves relative to the bracket 11, avoiding the situation that the keyboard 20 cannot be pulled out for use because the keyboard 20 comes out of the pulling structure 10.

[0067] Please refer to again Figure 1 , in some embodiments, the weighing device 100 further includes feet 40. The feet 40 are movably connected to the bottom of the base 30 so that the distance from the base 30 to the ground (or tabletop) can be adjusted. The feet 40 provide sufficient installation space for the pulling structure 10, which is beneficial to suspend the pulling structure 10 from the ground (or tabletop), facilitating the storage and extraction of the keyboard 20. At the same time, by adjusting the distance from the base 30 to the ground, the installation space height of the pulling structure 10 can be adjusted, which is beneficial to adapt to different pulling structures 10 and keyboards 20, thereby increasing the applicable range of the weighing device 100.

[0068] Optionally, the feet 40 and the base 30 are connected by threads. By adjusting the screw-in distance of the feet 40 and the base 30, the distance between the base 30 and the ground can be adjusted. Thereby, the adjustment of the distance between the base 30 and the ground can be made more convenient, and the height of the feet 40 is more stable and reliable, which is beneficial to improving the reliability of the weighing device 100.

[0069] It can be understood that in some other embodiments, the feet 40 and the base 30 can also be fixedly connected. The feet 40 have a telescopic structure, and the distance between the base 30 and the ground is adjusted by adjusting the height of the feet 40.

[0070] The drawer structure 10 and the weighing device 100 provided by the embodiments of the present application. When the keyboard 20 is in the storage state, one end of the bracket 11 is supported on the fixed frame 12 by the first roller 1101, and the other end of the bracket 11 is supported by the second roller 1203, so as to keep the structure of the bracket 11 stable. At the same time, the first roller 1101 is snapped into the first limiting portion 1201 and abuts against the third limiting portion 1204 to realize the limitation of the first roller 1101, so that the bracket 11 is fixed front and back relative to the fixed frame 12, thereby enabling the keyboard 20 to be stored at the bottom of the base 30 in a stable posture. When the keyboard 20 needs to be used, a pulling force is applied to the bracket 11 from the first limiting portion 1201 to the second limiting portion 1202, so that the first roller 1101 disengages from the first limiting portion 1201 and drives the keyboard 20 to move in the direction of the second limiting portion 1202. When the keyboard 20 is in the pulled-out and used state, the first roller 1101 and the second roller 1203 simultaneously support the same end of the bracket 11. The first roller 1101 abuts against the second limiting portion 1202. One end of the bracket 11 far from the first roller 1101 will sag towards the ground under the action of gravity, so that one end of the bracket 11 close to the first roller 1101 tilts upward, so that the first roller 1101 is snapped into the limiting groove 31 of the base 30. At this time, the position of the first roller 1101 can be confirmed through the observation window 1210. When the keyboard 20 is idle and needs to be stored, by slightly lifting one end of the bracket 11 far from the first roller 1101, so that the first roller 1101 disengages from the limiting groove 31, and a pushing force is applied to the bracket 11 from the second limiting portion 1202 to the first limiting portion 1201, so that the first roller 1101 drives the bracket 11 and the keyboard 20 to move in the direction of the first limiting portion 1201 until the first roller 1101 moves to be snapped into the first limiting portion 1201 and abuts against the third limiting portion 1204, so as to switch the keyboard 20 to the storage state.

[0071] The above has described the embodiments of the present application in detail with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present application. In addition, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Claims

1. A pull-out structure, characterized in that: include: A bracket, the bracket is used to install the keyboard, the bracket is provided with a first roller, and the first roller is used to drive the bracket to move; A fixed frame, the first roller is supported by the fixed frame and can rotate relative to the fixed frame, the fixed frame is provided with a first limiting portion and a second limiting portion at intervals, the first limiting portion passes through the bottom of the fixed frame to accommodate part of the first roller, the first roller is used to move between the first limiting portion and the second limiting portion, the fixed frame is provided with a second roller, the second roller is located on the side of the second limiting portion away from the first limiting portion, the bracket is supported by the second roller, and when the first roller is located at the first limiting portion, the first roller and the second roller are respectively supported at two ends of the bracket.

2. The pull-out structure according to claim 1, characterized in that: The fixing frame is further provided with a third limiting portion, the third limiting portion is located at a side of the first limiting portion away from the second limiting portion, and the third limiting portion is used to abut against the first roller.

3. The pull-out structure according to claim 1, characterized in that: The second limiting portion extends from the fixing frame toward the bracket and is spaced apart from the bracket. The second limiting portion is used to abut against the first roller.

4. The pull-out structure according to claim 3, characterized in that: The fixing frame includes a supporting portion and a bearing portion, the bearing portion is connected to the bottom of the supporting portion, the first limiting portion is arranged on the bearing portion, the second limiting portion is arranged through the supporting portion or the bearing portion, and the supporting portion is penetrated by an observation window, and the first roller corresponds to the observation window when it abuts against the second limiting portion.

5. The pull-out structure according to claim 4, characterized in that: The second limiting portion is connected to the side wall of the observation window and extends from the supporting portion toward the bracket.

6. The pull-out structure according to claim 1, characterized in that: There are two fixing frames, each of which includes a supporting portion and a bearing portion, the bearing portion is connected to the bottom of the supporting portion, the first limiting portion is arranged through the bearing portion, the supporting portions of the two fixing frames are arranged at intervals, and the bearing portions of the two fixing frames are arranged facing each other, the bracket is located between the two supporting portions, and there are two first rollers, which are respectively arranged on both sides of the keyboard and correspond one-to-one to the two fixing frames.

7. The pull-out structure according to any one of claims 4 to 6, characterized in that: The second roller is rotatably connected to the support portion, and one end of the supporting portion close to the second roller is hollowed out to form a first avoidance groove. The second roller is located in the first avoidance groove, and the radius of the second roller is greater than the distance from the center of the second roller to the supporting portion.

8. A weighing device, characterized in that: It comprises a base, a keyboard and a pull-out structure as described in any one of claims 1 to 7, wherein the keyboard is installed on the bracket, and the fixing frame is installed on the bottom of the base.

9. The weighing device according to claim 8, characterized in that: The top of the bracket is hollowed out at the first roller to form a second avoidance groove, and the base is provided with a limiting groove opening toward the ground, and the limiting groove is used to accommodate part of the first roller when the first roller abuts against the second limiting portion.

10. The weighing device according to claim 8 or 9, characterized in that: The weighing device also includes a support foot, which can be movably connected to the bottom of the base so that the distance from the base to the ground can be adjusted.

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