Improved weighing instrument

Abstract

The utility model discloses an improved weighing instrument which comprises a control display screen and a bottom box arranged on one side of the control display screen, one side of the bottom box is connected with an L-shaped protective cover plate through a dovetail groove and a dovetail strip, and the improved weighing instrument further comprises a limiting assembly arranged on the bottom box and used for limiting the protective cover plate. Four limiting holes are formed in the side, away from the control display screen, of the protective cover plate, the limiting assembly comprises four fixing pipes which are fixedly connected to the side, away from the control display screen, of the bottom box, every two fixing pipes are symmetrically arranged, and the four fixing pipes are slidably connected with a sliding plate. According to the utility model, through the arrangement of the limiting assembly, the connection limiting mode between the bottom box and the protective cover plate is improved under the matching action of the driving assembly and the force return assembly, and convenience is provided for the installation and disassembly between the protective cover plate and the bottom box.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing equipment, in particular to an improved weighing instrument. Background Art

[0002] Weighing instrument, also called weighing display control instrument, converts the weighing sensor signal (or through the weight transmitter) into a digital weight display, and can store, count and transmit the weight data.

[0003] The weighing instrument is mainly composed of a control display screen and a base box. A number of electrical control components are arranged in the base box, and a protective cover is used to protect the numerous electrical control components. The existing protective cover is mainly connected to the base box by screws. Although the connection between the protective cover and the base box is firm, when the electrical control components in the base box need to be maintained and repaired, the maintenance personnel need to remove multiple screws one by one, which affects the efficiency of installation and disassembly between the base box and the protective cover. Moreover, each screw is separately connected to the protective cover, and is easily lost during the disassembly process, thereby reducing the durability of the connection between the base box and the protective cover.

[0004] Therefore, an improved weighing instrument is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an improved weighing instrument to solve the problem of inconvenient connection and disassembly between the protective cover and the bottom box proposed in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an improved weighing instrument, comprising a control display screen and a bottom box disposed on one side of the control display screen, wherein one side of the bottom box is connected to an L-shaped protective cover plate via a dovetail groove and a dovetail bar, and further comprising a limit assembly disposed on the bottom box for limiting the position of the protective cover plate, wherein four limit holes are formed on a side of the protective cover plate away from the control display screen;

[0007] The limit assembly includes four fixed tubes fixedly connected to the side of the base box away from the control display screen, each of which is symmetrically arranged in pairs. The four fixed tubes are slidably connected to a sliding plate. The four sliding plates are provided with two symmetrically arranged mounting holes on the side close to the base box. The two mounting holes are connected to the limit plate through a rebound assembly. The side walls of the four fixed tubes are provided with two symmetrically arranged fixing holes. The two limit plates slide in the fixing holes. The four fixed tubes are provided with a driving assembly for driving the two limit plates.

[0008] The back-force assembly includes a back-force rod rotatably connected to the mounting hole, one end of the limit plate is connected to the back-force rod, two torsion springs are sleeved on the side wall of the back-force rod, the two ends of the two torsion springs are respectively connected to the inner wall of the mounting hole and the limit plate, one end of the back-force rod passes through the sliding plate and is fixedly connected to the first baffle, and the side of the sliding plate close to the first baffle is fixedly connected to the second baffle.

[0009] The four fixed tubes are provided with a guide assembly for guiding the movement of the sliding plate. The guide assembly includes two symmetrical guide holes opened on the inner wall of the fixed tube. The two guide holes are slidably connected to the guide plate, and the opposite ends of the two guide plates are connected to the sliding plate.

[0010] The driving assembly includes a threaded rod rotatably connected to four fixed tubes, the four sliding plates are threadedly connected to the threaded rod, one end of the four threaded rods passes through the bottom box and is fixedly connected to a sprocket, and the four sprockets are connected by a chain.

[0011] One of the four threaded rods passes through the fixing tube and is fixedly connected to a regular hexagonal fixing block.

[0012] An elastic extrusion frame is provided on one side of the bottom box close to the chain, and the chain is slidably connected to the elastic extrusion frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model improves the connection and limiting mode between the bottom box and the protective cover plate by setting the limiting component under the cooperation of the driving component and the return force component, thereby ensuring the firmness of the connection between the protective cover plate and the bottom box, thereby providing convenience for the installation and disassembly between the protective cover plate and the bottom box, and the four limiting components are designed as an integral part of the bottom box, thereby reducing the risk of losing the limiting components, thereby ensuring the durability of the connection between the bottom box and the protective cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the dovetail groove and dovetail bar structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the elastic extrusion frame structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the limit assembly of the utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0020] Figure 6 This is a schematic diagram of the internal structure of the pull-back component of the present utility model.

[0021] In the figure: 101, control display screen; 102, bottom box; 103, protective cover; 104, dovetail groove; 105, dovetail strip; 201, fixing tube; 202, sliding plate; 203, mounting hole; 204, limiting plate; 205, fixing hole; 206, limiting hole; 301, rebound rod; 302, torsion spring; 303, first baffle; 304, second baffle; 401, guide hole; 402, guide plate; 501, threaded rod; 502, sprocket; 503, chain; 6, elastic extrusion frame; 7, regular hexagonal fixing block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figures 1-6 The improved weighing instrument shown in the figure includes a control display screen 101 and a bottom box 102 arranged on one side of the control display screen 101. An L-shaped protective cover plate 103 is connected to one side of the bottom box 102 through a dovetail groove 104 and a dovetail bar 105. The bottom box 102 also includes a limit assembly arranged on the bottom box 102 for limiting the position of the protective cover plate 103.

[0025] The limiting assembly includes four fixed tubes 201 fixedly connected to the side of the bottom box 102 away from the control display screen 101, each of which is symmetrically arranged in pairs. The four fixed tubes 201 are slidably connected to the sliding plates 202. The four sliding plates 202 are provided with two symmetrically arranged mounting holes 203 on the side close to the bottom box 102. The two mounting holes 203 are connected to the limiting plate 204 through a rebound assembly. The side walls of the four fixed tubes 201 are provided with two symmetrically arranged fixing holes 205. The two limiting plates 204 slide in the fixing holes 205. The four fixed tubes 201 are provided with a driving assembly for driving the two limiting plates 204. The protective cover plate 103 is provided with four limiting holes 206 on the side away from the control display screen 101.

[0026] It should be noted here that: through the setting of the limit component, under the cooperation of the driving component and the rebound component, the connection limit method between the bottom box 102 and the protective cover 103 is improved, while ensuring the firmness of the connection between the protective cover 103 and the bottom box 102, it is convenient for the four groups of limit plates 204 to move synchronously, thereby providing convenience for the installation and disassembly between the protective cover 103 and the bottom box 102, and the four limit components are designed as an integral part of the bottom box 102, thereby reducing the risk of losing the limit components, thereby ensuring the durability of the connection between the bottom box 102 and the protective cover 103.

[0027] It is worth noting that as an existing technology, the specific structure and working principle of weighing instruments have been mastered by people in this field and will not be elaborated here.

[0028] See also Figure 6 The pull-back assembly shown in the figure includes a pull-back rod 301 rotatably connected to the mounting hole 203, one end of the limit plate 204 is connected to the pull-back rod 301, two torsion springs 302 are sleeved on the side wall of the pull-back rod 301, and the two ends of the two torsion springs 302 are respectively connected to the inner wall of the mounting hole 203 and the limit plate 204, one end of the pull-back rod 301 is set through the sliding plate 202 and is fixedly connected to the first baffle 303, and the side of the sliding plate 202 close to the first baffle 303 is fixedly connected to the second baffle 304;

[0029] It should be noted here that the return force component is provided to provide a reset effect for the rotation of the limit plate 204. At the same time, when the first baffle 303 and the second baffle 304 are against each other, the rotation of the limit plate 204 will be prevented, and the limit plate 204 will move in a horizontal state close to the protective cover 103.

[0030] See also Figure 6 The four fixed tubes 201 shown in the figure are provided with a guide assembly for guiding the movement of the sliding plate 202. The guide assembly includes two guide holes 401 symmetrically arranged on the inner wall of the fixed tube 201. The two guide holes 401 are slidably connected to the guide plates 402. The opposite ends of the two guide plates 402 are connected to the sliding plate 202.

[0031] It should be noted here that the guide assembly is provided to provide guidance and limiting functions for the movement of the sliding plate 202 .

[0032] Working Principle: When the weighing instrument is in use, when an object is placed on the weighing platform, the platform is subjected to the weight of the object. This force is converted into an electrical signal through sensors such as resistance strain gauges, piezoelectric sensors, and electromagnetic force sensors. The processed weight information is presented to the user in digital form through the control display screen 101, achieving intuitive and accurate weight display.

[0033] When it is necessary to perform maintenance on the electrical components in the bottom box 102, the driving assembly is first used to drive the sliding plate 202 to move away from the bottom box 102 in the fixed tube 201. During the movement of the sliding plate 202 away from the bottom box 102, the two limiting plates 204 are driven to move away from the bottom box 102. During the continuous movement of the sliding plate 202, when the two limiting plates 204 abut against the side walls of the fixing holes 205, the two limiting plates 204 are pushed to rotate closer to each other under the driving force. Therefore, during the continuous movement of the sliding plate 202, the two limiting plates 204 are completely retracted into the fixed tube 201.

[0034] After the two limiting plates 204 are completely retracted into the fixing tube 201, the connection limit between the bottom box 102 and the protective cover 103 is released. At this time, the protective cover 103 can be removed from the bottom box 102 for maintenance and inspection of the internal electrical components.

[0035] After the maintenance and inspection of the electrical components in the bottom box 102 is completed, the protective cover 103 can be inserted into the bottom box 102 under the guidance of the dovetail groove 104 and the dovetail bar 105, and the four fixing tubes 201 are inserted into the limiting holes 206. Then, the driving assembly is used to move the four sliding plates 202 close to the bottom box 102 in the fixing tubes 201. When the two limiting plates 204 on the four sliding plates 202 are matched with the fixing holes 205, they will rotate away from each other under the elastic action of the torsion spring 302. When the two limiting plates 204 are against the side walls of the protective cover 103, under the driving force and the rotation of the limiting plates 204, the two limiting plates 204 will continue to move away from each other. When the first baffle 303 on the two rebound rods 301 is against the second baffle 304, it will prevent the limiting plates 203 from being engaged. When the limit plate 204 abuts against the side wall of the protective cover 103, the movement of the sliding plate 202 can be stopped, thereby using four groups of limit plates 204 facing each other to achieve the tight contact of the protective cover 103, thereby achieving the connection between the protective cover 103 and the bottom box 102. The operation is simple and the implementation is convenient. While ensuring the firm connection between the protective cover 103 and the bottom box 102, it is convenient to make the four groups of limit plates 204 move synchronously, thereby providing convenience for the installation and disassembly between the protective cover 103 and the bottom box 102, and the four limit components are designed as an integral part of the bottom box 102, thereby reducing the risk of losing the limit components, thereby ensuring the durability of the connection between the bottom box 102 and the protective cover 103.

[0036] Example 2

[0037] See also Figure 4-Figure 6This embodiment further explains Example 1. The driving assembly shown in the figure includes a threaded rod 501 rotatably connected to four fixed tubes 201, four sliding plates 202 are threadedly connected to the threaded rod 501, one end of the four threaded rods 501 passes through the bottom box 102 and is fixedly connected to a sprocket 502, and the four sprockets 502 are connected by a chain 503;

[0038] It should be noted here that: through the setting of the driving assembly, in the process of rotating the threaded rod 501, the threaded engagement transmission effect of the threaded rod 501 and the sliding plate 202 and the guiding effect of the guide assembly will be utilized to drive the sliding plate 202 to move in the fixed tube 201. At the same time, under the transmission effect of the four sprockets 502 and the chain 503, the other three threaded rods 501 will be driven to rotate, and then the four sliding plates 202 will be driven to move synchronously in the four fixed tubes 201.

[0039] See also Figure 5 and Figure 6 One of the four threaded rods 501 shown in the figure passes through the fixed tube 201 and is fixedly connected to a regular hexagonal fixing block 7;

[0040] It should be noted here that the hexagonal fixing block 7 is provided to drive the threaded rod 501 to rotate.

[0041] See also Figure 3 and Figure 4 , the bottom box 102 shown in the figure is provided with an elastic extrusion frame 6 on one side close to the chain 503, and the chain 503 is slidably connected to the elastic extrusion frame 6;

[0042] It should be noted that the elastic extrusion frame 6 is provided to control the tension of the chain 503 , thereby ensuring the sensitivity of the synchronous rotation of the four sprockets 502 .

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An improved weighing instrument, comprising: A control display screen (101) and a bottom box (102) arranged on one side of the control display screen (101), wherein one side of the bottom box (102) is connected to an L-shaped protective cover plate (103) via a dovetail groove (104) and a dovetail bar (105); It is characterized by further comprising: A limiting component provided on the bottom box (102) for limiting the position of the protective cover plate (103); The limiting assembly comprises four fixed tubes (201) fixedly connected to a side of the bottom box (102) away from the control display screen (101), and symmetrically arranged in pairs. The four fixed tubes (201) are slidably connected to a sliding plate (202). Two symmetrically arranged mounting holes (203) are provided on a side of the four sliding plates (202) close to the bottom box (102). The two mounting holes (203) are connected to a limiting plate (204) through a back force assembly. Two symmetrically arranged fixing holes (205) are provided on the side walls of the four fixed tubes (201). The two limiting plates (204) slide in the fixing holes (205). The four fixed tubes (201) are provided with a driving assembly for driving the two limiting plates (204). Four limiting holes (206) are provided on a side of the protective cover (103) away from the control display screen (101).

2. The improved weighing meter according to claim 1, characterized in that: The pull-back assembly comprises a pull-back rod (301) rotatably connected to the mounting hole (203); one end of the limit plate (204) is connected to the pull-back rod (301); two torsion springs (302) are sleeved on the side wall of the pull-back rod (301); the two ends of the two torsion springs (302) are respectively connected to the inner wall of the mounting hole (203) and the limit plate (204); one end of the pull-back rod (301) passes through the sliding plate (202) and is fixedly connected to the first baffle (303); and the side of the sliding plate (202) close to the first baffle (303) is fixedly connected to the second baffle (304).

3. The improved weighing instrument according to claim 1, characterized in that: The four fixed tubes (201) are provided with a guide assembly for guiding the movement of the sliding plate (202), and the guide assembly includes two guide holes (401) symmetrically arranged on the inner wall of the fixed tube (201), the two guide holes (401) are slidably connected to the guide plates (402), and the opposite ends of the two guide plates (402) are connected to the sliding plate (202).

4. The improved weighing instrument according to claim 1, characterized in that: The driving assembly comprises a threaded rod (501) rotatably connected to four fixed tubes (201); the four sliding plates (202) are threadedly connected to the threaded rod (501); one end of the four threaded rods (501) passes through the bottom box (102) and is fixedly connected to a sprocket (502); and the four sprockets (502) are connected to each other via a chain (503).

5. The improved weighing meter according to claim 4, characterized in that: One of the four threaded rods (501) is arranged to pass through the fixed tube (201) and is fixedly connected to a regular hexagonal fixing block (7).

6. The improved weighing meter according to claim 4, characterized in that: An elastic extrusion frame (6) is provided on one side of the bottom box (102) close to the chain (503), and the chain (503) is slidably connected to the elastic extrusion frame (6).

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