A deployable platform scale

Abstract

The present invention relates to an expandable platform scale, comprising a base, a weighing sensor and a loading plate, wherein the loading plate is arranged on the base through the weighing sensor, and the weighing sensor can measure the weight of the measured object on the loading plate; wherein the loading plate comprises a bottom plate and an expansion plate, the bottom plate is square, and its lower surface is connected to the weighing sensor, there are four expansion plates, which are respectively hinged to the four corners of the bottom plate, and can be flipped from the upper surface of the bottom plate to the same horizontal plane of the bottom plate, and each expansion plate comprises a fixed plate, a sliding plate and a telescopic rod. Compared with the prior art, the expandable platform scale can flip the expansion plate when needed to make it on the same horizontal plane as the bottom plate, and then pull the sliding plate toward the adjacent expansion plate in turn, and expand the sliding plate in turn, thereby expanding the use area of ​​the loading plate of the platform scale for carrying the measured object, and can smoothly cope with the measurement of large-volume objects outside the plan, and effectively expand the scope of application of the platform scale.

Description

Technical Field

[0001] The present invention relates to the technical field of platform scales, and in particular to a deployable platform scale. Background Art

[0002] A platform scale is a small scale with a rectangular table top, usually used on the ground. It is widely used in factory production processes, market trading activities or other activities.

[0003] In actual use, the object to be measured is sometimes too large, resulting in the load-bearing part of the scale being insufficient to carry the entire object to be measured. This brings great difficulties to the weighing operation and may even make weighing impossible, requiring the operator to replace it with a larger scale for weighing.

[0004] Therefore, if the load area of ​​the platform scale can be increased, its applicability can be greatly expanded to cope with such unexpected situations. Summary of the invention

[0005] In view of this, it is necessary to provide an expandable platform scale to solve the technical problem in the prior art that the area of ​​the load-bearing part of the platform scale cannot be enlarged.

[0006] The present invention provides an expandable platform scale, which comprises: a base, a weighing sensor and a loading plate, wherein the loading plate is arranged on the base through the weighing sensor, and the weighing sensor can measure the weight of the measured object on the loading plate; wherein the loading plate comprises a bottom plate and an expanding plate, the bottom plate is square, and its lower surface is connected to the weighing sensor, there are four expanding plates, which are respectively hinged to the four corners of the bottom plate and can be flipped from the upper surface of the bottom plate to the same horizontal plane as the bottom plate, each expanding plate comprises a fixed plate, a sliding plate and a telescopic rod, one end of the fixed plate is hinged to the bottom plate, a plurality of sliding plates are arranged side by side against the fixed plate, two adjacent sliding plates and the sliding plate and the fixed plate are connected by the telescopic rod, and the sliding plate can move along the side of the bottom plate under the guidance of the telescopic rod.

[0007] Furthermore, the unfolded plate is also in a cube shape, and the side length of the unfolded plate is less than or equal to half of the side length of the bottom plate.

[0008] Furthermore, the fixed plate is an L-shaped structure, and the four fixed plates are symmetrical about the center of the base plate. The inner side of the fixed plate includes a first inner edge and a second inner edge that are perpendicular to each other, and the outer side includes a first outer edge and a second outer edge that are perpendicular to each other. The first inner edge is parallel to the first outer edge, and the second inner edge is parallel to the second outer edge. When the unfolded plate and the base plate are in the same horizontal plane, the first inner edge and the side edge of the base plate are in the same straight line.

[0009] Furthermore, the sliding plate is rectangular, with its short side abutting against the first inner side, and its long side abutting against the second inner side or the long side of the adjacent sliding plate.

[0010] Furthermore, mutually connected guide grooves are provided on the side edge of the bottom plate and the first inner edge, and corresponding guide protrusions are formed on the short sides of the sliding plate. The guide protrusions are embedded in the guide grooves to guide the sliding plate to slide from the first inner edge to the side edge of the bottom plate.

[0011] Furthermore, a telescopic rod cavity is provided on the fixed plate or the sliding plate, and a through hole connected to the telescopic rod cavity is also provided. The inner diameter of the through hole is smaller than the inner diameter of the telescopic rod cavity. The telescopic rod is built into the telescopic rod cavity, one end of which passes through the through hole and is fixedly connected to the adjacent fixed plate, and the other end of the telescopic rod extends an abutment portion along the radial direction of the telescopic rod. When the telescopic rod passes through the through hole and moves outward, the abutment portion can abut against the inner wall of the through hole to prevent the telescopic rod from completely disengaging from the telescopic rod cavity.

[0012] Furthermore, the unfolding plate also includes a first magnetic attraction portion and a second magnetic attraction portion that attract each other. The first magnetic attraction portion is arranged on the long side of the sliding plate farthest from the second inner edge, and the second magnetic attraction portion is arranged on the second outer edge. When the sliding plate is slid, the first magnetic attraction portion can be attracted to the second magnetic attraction portion of the unfolding plate in the direction of movement of the sliding plate.

[0013] Furthermore, at least one plug is formed on the first magnetic attraction portion, and one or more sockets are correspondingly opened on the second magnetic attraction portion. When the first magnetic attraction portion is attracted to the second magnetic attraction portion, the plug is inserted into the socket.

[0014] Furthermore, the angle between the direction in which the unfolded plate is hinged to the bottom plate and the side edge of the bottom plate is 45°.

[0015] Compared with the prior art, the expandable platform scale can flip the expansion plate when needed to make it on the same horizontal plane with the bottom plate, and then pull the sliding plate toward the adjacent expansion plate in turn to expand the sliding plates in turn, thereby expanding the use area of ​​the loading plate of the platform scale for carrying the measured object, and can smoothly cope with the measurement of large-volume items beyond the plan, effectively expanding the scope of application of the platform scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a top view of the expandable platform scale provided by the present invention when the loading plate is folded;

[0017] Figure 2 A top view of the unfoldable platform scale provided by the present invention when the flip plate is opened;

[0018] Figure 3 A top view of the expandable platform scale provided by the present invention when the sliding plates are fully opened;

[0019] Figure 4 for Figure 2 Partial cross-sectional view of section AA;

[0020] Figure 5 A cross-sectional view of the telescopic rod. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0022] See also Figures 1 to 5 The expandable platform scale includes a base 1, a weighing sensor 2 and a loading plate 3. The base 1 is placed on the ground when in use, and is used to carry other components of the expandable platform scale. The loading plate 3 is arranged on the base 1 through the weighing sensor 2. When the object to be measured is placed on the loading plate 3, the weighing sensor 2 can obtain the weight information of the object to be measured and display it on the display screen (not shown) of the platform scale. The display screen is electrically connected to the weighing sensor 2, which is a common structure of an electronic platform scale. Its working principle and connection method are both prior art and are well known to those skilled in the art, and will not be elaborated here.

[0023] The loading plate 3 includes a bottom plate 31 and an expansion plate 32. The bottom plate 31 is square, and the lower surface is connected to the weighing sensor 2. There are four expansion plates 32, which are also square. The expansion plates 32 are hinged to the four corners of the bottom plate 31 respectively, and the hinge direction forms an angle of 45° with the side of the bottom plate 31, so that it can be turned over symmetrically.

[0024] In the normal working state, the four expansion plates 32 are placed on the bottom plate 31. Figure 1 At this time, the area of ​​the scale used to carry the measured object is the area of ​​the bottom plate 31. It is easy to know that the side length of the expansion plate 32 should be less than or equal to half the side length of the bottom plate 31, so that the expansion plates 32 will not overlap each other when placed on the bottom plate 31, so that the upper surface remains flat.

[0025] When encountering a large object to be measured, it is necessary to expand the area of ​​the loading plate 3, firstly, the four unfolding plates 32 are turned over respectively, so that the unfolding plates 32 and the upper surface of the bottom plate 31 are on the same horizontal plane, such as Figure 2 As shown. In actual use, it is found that it is inconvenient to flip the four unfolding plates 32 when they are close together. In order to solve this problem, it is preferred to cut off a part of the corner opposite to the hinge of the unfolding plate 32, so that when the four unfolding plates 32 are close together, a space is formed in the middle for fingers to be inserted. A chamfer is formed on the cross section for fingers to hold, so that the user can flip the unfolding plate 32.

[0026] Each unfolding plate 32 includes a fixed plate 321, a sliding plate 322 and a telescopic rod 323. The fixed plate 321 is an L-shaped structure, one end of which is hinged to the bottom plate 31. The four fixed plates 321 are arranged symmetrically about the center of the bottom plate 31, that is, they are arranged in the same direction. The inner side of the fixed plate 321 includes a first inner edge 3211 and a second inner edge 3212 that are perpendicular to each other, and the outer side includes a first outer edge 3213 and a second outer edge 3214 that are perpendicular to each other. The first inner edge 3211 is parallel to the first outer edge 3213, and the second inner edge 3212 is parallel to the second outer edge 3214. When the unfolding plate 32 is unfolded and is in the same horizontal plane as the bottom plate 31, the first inner edge 3211 and the side edge of the bottom plate 31 are in the same straight line.

[0027] The sliding plate 322 is rectangular, and a plurality of sliding plates 322 are disposed in the region between the first inner edge 3211 and the second inner edge 3212. The short sides of the sliding plates 322 are attached to the first inner edge 3211, and the long sides are attached to the second inner edge 3212 or the long sides of the adjacent sliding plates 322. The sliding plates and the fixed plate 321 together form a square expansion plate 32.

[0028] A telescopic rod 323 is provided between two adjacent sliding plates 322 or between a sliding plate 322 and the second inner edge 3212 of the fixed plate 321 to provide a connection and support function for each sliding plate 322 when the sliding plate 322 is moved.

[0029] Specifically, a telescopic rod cavity 3221 is provided on the fixed plate 321 or the sliding plate 322, and a through hole connected to the telescopic rod cavity 3221 is also provided, and the inner diameter of the through hole is smaller than the inner diameter of the telescopic rod cavity 3221. The telescopic rod 323 is built into the telescopic rod cavity, one end of which passes through the through hole and is fixedly connected to the adjacent fixed plate 321, and the other end of which extends out abutting portion 3231 along the radial direction of the telescopic rod 323. When the telescopic rod 323 passes through the through hole and moves outward, the abutting portion 3231 can abut against the inner wall of the through hole to prevent the telescopic rod 323 from completely leaving the telescopic rod cavity. When the telescopic rod 323 is recovered, it can be completely withdrawn into the telescopic rod cavity 3221 and hidden, so that there is no gap between two adjacent sliding plates 322 or between the sliding plate 322 and the fixed plate 321.

[0030] When the length of the telescopic rod 323 is too long and exceeds the width of the sliding plate 322, the telescopic rod 323 can also be made into Figure 5 The multi-section structure shown enables the telescopic rod 323 to have a certain telescopic performance. When folded, the various parts of the telescopic rod 323 overlap and sleeve together to reduce the axial size, thereby meeting the design requirements, that is, being able to be hidden in the telescopic rod cavity.

[0031] The side edge of the bottom plate 31 and the first inner edge 3211 are provided with mutually connected guide grooves, and the short edge of the sliding plate 322 is correspondingly formed with a guide protrusion, which is embedded in the guide groove to guide the sliding plate 322 to slide from the first inner edge 3211 to the side edge of the bottom plate 31. During this sliding process, each sliding plate 322 is gradually separated, and the telescopic rod 323 is stretched, so that the sliding plates 322 are evenly distributed between two adjacent unfolding plates 32. The farthest sliding plate 322 contacts the fixed plate 321 of another unfolding plate 32.

[0032] In order to make the connection between the farthest sliding plate 322 and the fixed plate 321 of another unfolding plate 32 more firmly. The unfolding plate 32 also includes a first magnetic attraction portion and a second magnetic attraction portion that attract each other, the first magnetic attraction portion is arranged on the long side of the sliding plate 322 farthest from the second inner edge 3212, and the second magnetic attraction portion is arranged on the second outer edge 3214. When the sliding plate 322 is moved along the guide groove, the first magnetic attraction portion can be attracted to the second magnetic attraction portion of the unfolding plate 32 pointed to by the movement direction of the sliding plate 322. And preferably, at least one plug is formed on the first magnetic attraction portion, and one or more sockets are opened on the second magnetic attraction portion in a one-to-one correspondence. When the first magnetic attraction portion is attracted to the second magnetic attraction portion, the plug is inserted into the socket. In this way, the second magnetic attraction portion can give the first magnetic attraction portion an upward supporting force based on the magnetic force to offset the effect of gravity on it.

[0033] When the four first magnetic attraction parts are attracted to the corresponding four second magnetic attraction parts, the scale is unfolded and appears as follows: Figure 3 When the side length of the unfolded plate 32 is half of the bottom plate 31, the load area of ​​the platform scale can be expanded to four times the original through such unfolding deformation, which greatly expands the scope of use.

[0034] The implementation of the embodiments of the present invention has the following beneficial effects: the expandable platform scale can flip the expansion plate when needed to make it on the same horizontal plane as the bottom plate, and then pull the sliding plates toward the adjacent expansion plates in turn to expand the sliding plates in turn, thereby expanding the use area of ​​the loading plate of the platform scale for carrying the measured object, and can smoothly cope with the measurement of large-volume items that are not planned, effectively expanding the scope of application of the platform scale.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A deployable platform scale, characterized in that: It includes: A base, a weighing sensor and a loading plate, wherein the loading plate is arranged on the base through the weighing sensor, and the weighing sensor can measure the weight of the measured object on the loading plate; The loading plate includes a bottom plate and an unfolding plate, the bottom plate is square, and its lower surface is connected to the weighing sensor, there are four unfolding plates, which are respectively hinged to the four corners of the bottom plate and can be flipped from the upper surface of the bottom plate to the same horizontal plane as the bottom plate, each unfolding plate includes a fixed plate, a sliding plate and a telescopic rod, one end of the fixed plate is hinged to the bottom plate, a plurality of sliding plates are arranged side by side against the fixed plate, two adjacent sliding plates and the sliding plate and the fixed plate are connected by the telescopic rod, and the sliding plate can move along the side of the bottom plate under the guidance of the telescopic rod; The unfolding plate is also a cube, and the side length of the unfolding plate is less than or equal to half of the side length of the bottom plate; the fixed plate is an L-shaped structure, and the four fixed plates are symmetrical about the center of the bottom plate, the inner side of the fixed plate includes a first inner side and a second inner side that are perpendicular to each other, and the outer side includes a first outer side and a second outer side that are perpendicular to each other, the first inner side is parallel to the first outer side, and the second inner side is parallel to the second outer side, when the unfolding plate and the bottom plate are in the same horizontal plane, the first inner side and the side edge of the bottom plate are in the same straight line; the sliding plate is a rectangle, its short side is against the first inner side, and its long side is against the second inner side or the long side of the adjacent sliding plate; the side edge of the bottom plate and the first inner side are provided with guide grooves that are interconnected, A guide protrusion is correspondingly formed on the short side of the sliding plate, and the guide protrusion is embedded in the guide groove to guide the sliding plate to slide from the first inner edge to the side edge of the bottom plate; a telescopic rod cavity is provided on the fixed plate or the sliding plate, and a through hole connected to the telescopic rod cavity is also provided, and the inner diameter of the through hole is smaller than the inner diameter of the telescopic rod cavity, the telescopic rod is built into the telescopic rod cavity, one end passes through the through hole and is fixedly connected to the adjacent fixed plate, and the other end extends an abutment portion along the radial direction of the telescopic rod, and when the telescopic rod passes through the through hole and moves outward, the abutment portion can abut against the inner wall at the through hole to prevent the telescopic rod from completely disengaging from the telescopic rod cavity; the angle between the direction in which the unfolding plate is hinged to the bottom plate and the side edge of the bottom plate is 45°.

2. The expandable platform scale according to claim 1, characterized in that: The unfolding plate also includes a first magnetic attraction portion and a second magnetic attraction portion that attract each other, the first magnetic attraction portion is arranged on the long side of the sliding plate farthest from the second inner side, and the second magnetic attraction portion is arranged on the second outer side. When the sliding plate is slid, the first magnetic attraction portion can be attracted to the second magnetic attraction portion of the unfolding plate in the direction of movement of the sliding plate.

3. The expandable platform scale according to claim 2, characterized in that: At least one plug is formed on the first magnetic attraction part, and one or more sockets are opened on the second magnetic attraction part in a one-to-one correspondence. When the first magnetic attraction part and the second magnetic attraction part are attracted, the plug is inserted into the socket.

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