Measuring switch

Abstract

The invention relates to the field of circuit devices, in particular to a measuring switch which comprises an upper shell, a lower shell and a maintenance device, a plurality of fixing holes for screws to penetrate through are formed in the surface of the upper shell at intervals, a plurality of threaded holes for the screws to be screwed down are formed in the surface of the lower shell at intervals, and when the lower shell covers the upper shell and is spliced to form a shell, the maintenance device is arranged on the upper shell. Fixing holes and threaded holes are formed in the upper shell and the lower shell, the fixing holes and the threaded holes are in one-to-one correspondence and are communicated, the ends of screws penetrate through the fixing holes and are fixed to the inner walls of the threaded holes in a threaded screwing mode, the maintenance device comprises a limiting assembly and a plurality of screwdrivers, and the limiting assembly is connected between the lower shell and the upper shell and can limit the screwdrivers to the surface of the shell. According to the measuring switch, the limiting assembly and the screwdrivers are arranged, so that a worker can conveniently take the screwdrivers of various models, the screwdrivers are matched with the screws one by one, the maintenance efficiency of the measuring switch is improved, the maintenance period of the measuring switch is shortened, and the use simplicity and convenience of the measuring switch are improved.

Description

Technical Field

[0001] This application relates to the field of circuit devices, and more particularly to a measuring switch. Background Technology

[0002] A measuring switch is a device that combines the functions of traditional low-voltage switching appliances with high-precision measurement technology. It is mainly used for monitoring, controlling and protecting power distribution lines and is a key device in smart grids and energy management systems.

[0003] The measuring switch includes a housing that protects the internal components. In the prior art, the housing consists of two shells that are bolted together to form the outer shell. When the operator repairs the measuring switch, if the screwdriver bit is not compatible, the repair will be interrupted, thus extending the repair cycle and reducing the inconvenience of using the measuring switch. Summary of the Invention

[0004] To improve the ease of use of the measuring switch, this application provides a measuring switch.

[0005] This application provides a measuring switch, which adopts the following technical solution: A measuring switch includes an upper housing, a lower housing, and a maintenance device. The upper housing has a plurality of fixing holes spaced apart on its surface for screws to pass through, and the lower housing has a plurality of threaded holes spaced apart for screws to tighten. When the lower housing is fitted onto the upper housing to form an outer shell, the fixing holes and threaded holes correspond one-to-one and are connected. The end of a screw passes through the fixing hole and is threaded and tightened to the inner wall of the threaded hole. The maintenance device includes a limiting component and a plurality of screwdrivers. The limiting component is connected between the lower housing and the upper housing and can limit the plurality of screwdrivers to the surface of the outer shell.

[0006] By adopting the above technical solution, when the staff repairs the measuring switch, they can select the corresponding screwdriver according to the screw model in the fixing hole and remove the screwdriver from the limiting component. This makes it convenient for the staff to take out the screwdrivers of various models. The screwdrivers and screws are matched one by one, thereby improving the repair efficiency of the measuring switch, shortening the repair cycle of the measuring switch, and improving the ease of use of the measuring switch.

[0007] Optionally, the limiting component includes multiple positioning strips, one end of which is spaced apart and connected to the surface of the lower housing facing the upper housing, and the other end of which protrudes from the end face of the lower housing. The surface of the upper housing has multiple positioning cavities for the ends of the positioning strips to be embedded in, and the surface of the positioning strips has multiple positioning holes spaced apart for the screwdriver shank to pass through. The arrangement direction of the positioning holes is parallel to the length direction of the positioning strips, and the inner wall of the positioning holes abuts against the outer circumferential surface of the screwdriver shank to form a limiting effect.

[0008] By adopting the above technical solution, when the upper shell covers the lower shell to form the outer shell, the end of the positioning strip protruding from the lower shell is embedded in the positioning cavity. The inner wall of the positioning cavity abuts against the outer wall of the positioning strip to form a limit. The fixing holes and threaded holes correspond one by one and are connected to each other, realizing the initial positioning between the upper shell and the lower shell. When each screw is passed through the fixing hole and tightened into the inner wall of the threaded hole by a screwdriver, the end of the screwdriver with the blade tip is passed through multiple positioning holes in sequence. The inner wall of the positioning hole abuts against the outer circumferential surface of the screwdriver blade to form a limit, realizing the storage of multiple screwdrivers on the positioning strip, thereby making it convenient for staff to take out screwdrivers of various models to disassemble the outer shell.

[0009] Optionally, the limiting component further includes multiple limiting strips, one end of which is connected at intervals to the surface of the upper housing facing the lower housing, and the other end of which protrudes from the end face of the upper housing. The surface of the lower housing has multiple limiting cavities for the ends of the limiting strips to be embedded. The limiting strips are located between two adjacent positioning strips. The surface of the limiting strips has multiple limiting holes at intervals for the screwdriver shank to pass through. The limiting holes correspond one-to-one with the positioning holes, and the inner wall of the limiting hole can abut against the outer peripheral surface of the screwdriver shank to form a limiting action.

[0010] By adopting the above technical solution, when the upper shell covers the lower shell to form the outer shell, the end of the positioning strip protruding from the lower shell is embedded in the positioning cavity, and the end of the limiting strip protruding from the upper shell is embedded in the limiting cavity. The limiting strip is located between two adjacent positioning strips. The upper shell and the lower shell are strengthened by the limiting strip and the positioning strip. At the same time, the positioning hole and the limiting hole correspond one-to-one. The end of the screwdriver with the blade tip passes through the positioning hole and the limiting hole in sequence, so that the positioning strip is not easy to deviate in the positioning cavity, and the limiting strip is not easy to deviate in the inner wall of the limiting cavity, further improving the structural strength of the outer shell.

[0011] Optionally, the limiting component further includes multiple storage blocks, which are spaced apart and connected to the surface of the upper housing and the surface of the lower housing. The arrangement direction of the storage blocks is parallel to the length direction of the positioning strip. Each storage block corresponds to a positioning hole, and the surface of each storage block has a storage cavity for inserting a screwdriver tip. The inner wall of the storage cavity abuts against the outer peripheral surface of the screwdriver tip to form a shield.

[0012] By adopting the above technical solution, when the screwdriver with the tip has multiple positioning holes and limiting holes inserted sequentially into the storage cavity, the inner wall of the storage cavity shields the outer circumferential surface of the screwdriver tip, making the screwdriver tip less susceptible to damage from external impacts, thereby extending the service life of the screwdriver.

[0013] Optionally, the limiting component further includes multiple clamping blocks. The lower housing surface and the upper housing surface are each provided with multiple clamping cavities for the clamping blocks to slide. The sliding direction of the clamping blocks is perpendicular to the axis of the positioning holes. The clamping blocks correspond one-to-one with the storage blocks. The clamping blocks and the storage blocks are located at both ends of the positioning strip arrangement direction. When the screwdriver tip is embedded in the storage cavity, the clamping blocks are driven to slide towards the screwdriver. The end face of the clamping block abuts against the end face of the screwdriver handle and confines the screwdriver tip within the storage cavity.

[0014] By adopting the above technical solution, when the screwdriver shank with the tip passes through multiple positioning holes and limiting holes in sequence and is embedded in the storage cavity, the end face of the screwdriver handle away from the shank is flush with the end face of the clamping block, driving the clamping block to slide along the inner wall of the clamping cavity toward the screwdriver. The end face of the clamping block abuts against the end face of the screwdriver handle and confines the screwdriver tip within the storage cavity, thereby limiting the two ends of the screwdriver in the axial direction, making the screwdriver less prone to displacement, and thus improving the stability of screwdriver storage.

[0015] Optionally, the limiting component further includes a plurality of elastic elements, each corresponding to a clamping block. One end of the elastic element in the elastic direction is connected to the inner wall of the clamping cavity, and the other end of the elastic element in the elastic direction is connected to the surface of the clamping block. The elastic element has the elastic force to drive the clamping block to slide towards the screwdriver, and the end face of the clamping block abuts against the end face of the screwdriver handle to form a limiting position.

[0016] By adopting the above technical solution, when the end face of the screwdriver handle is flush with the end face of the clamping block, the elastic element drives the clamping block to slide towards the screwdriver. The end face of the clamping block abuts against the end face of the screwdriver handle to form a limit. There is no need for the operator to manually control the sliding of the clamping block, thus achieving automatic clamping and limiting of the screwdriver.

[0017] Optionally, the limiting component further includes multiple opening and closing plates. Multiple sliding grooves for sliding of the storage blocks are spaced apart on the surface of the lower housing and the surface of the upper housing. The sliding direction of the storage blocks is parallel to the axis of the positioning holes. The opening and closing plates correspond one-to-one with the storage blocks and are connected to the surface of the storage blocks facing the positioning strip. The inner wall of the sliding groove is provided with opening and closing cavities for the opening and closing plates to slide. The opening and closing cavities correspond one-to-one with the clamping cavities and are connected. When the storage block slides towards the positioning strip, the opening and closing plates cover the clamping cavities and confine the clamping blocks within the clamping cavities. When the storage block slides away from the positioning strip, the covering effect of the opening and closing plates on the clamping cavities disappears.

[0018] By adopting the above technical solution, when the screwdriver is used, the storage block is driven to slide along the inner wall of the slide groove towards the positioning strip, which in turn drives the opening and closing plate to slide along the inner wall of the opening and closing cavity towards the clamping cavity. The opening and closing plate covers the clamping cavity and confines the clamping block within the clamping cavity. When the screwdriver is finished using, the end of the screwdriver shank with the blade tip passes through multiple positioning holes and multiple limiting holes and is embedded in the storage cavity. The screwdriver blade tip abuts against the inner wall of the storage cavity and pushes the storage block to slide along the inner wall of the slide groove away from the positioning strip, which in turn drives the opening and closing plate to slide along the inner wall of the opening and closing cavity away from the clamping cavity. The sealing effect of the opening and closing plate on the clamping cavity disappears, and the end face of the screwdriver handle is flush with the end face of the clamping block, which drives the clamping block to slide along the inner wall of the clamping cavity towards the screwdriver. The end face of the clamping block abuts against the end face of the screwdriver handle to form a limit.

[0019] Optionally, the limiting component further includes multiple elastic elements II, each corresponding to a storage block. One end of the elastic element II in the elastic direction is connected to the inner wall of the slide groove, and the other end of the elastic element II in the elastic direction is connected to the surface of the storage block away from the opening and closing plate. The elastic element II has the elastic force to drive the storage block to slide towards the positioning strip, and the surface of the opening and closing plate tends to cover the clamping cavity.

[0020] By adopting the above technical solution, when a screwdriver is needed, the clamping block is driven to slide along the inner wall of the clamping cavity away from the screwdriver. The end face of the clamping block is flush with the bottom surface of the opening and closing plate. The elastic force of the elastic element drives the storage block to slide towards the positioning strip. The opening and closing plate covers the clamping cavity and confines the clamping block within the clamping cavity. The storage block drives the screwdriver to slide along the inner wall of the positioning hole away from the positioning strip, thus facilitating the removal of the screwdriver by the operator.

[0021] Optionally, a locking assembly is connected to the positioning strip. The locking assembly includes a locking block and an elastic element three. The end face of the positioning strip protruding from the lower housing has a slide for the locking block to slide. The sliding direction of the locking block is parallel to the axis of the positioning hole. The inner wall of the positioning cavity has a slot for the end of the locking block to be inserted. One end of the elastic element three in the elastic direction is connected to the inner wall of the slide, and the other end of the elastic element three in the elastic direction is connected to the surface of the locking block. The elastic element three has the tendency to elastically drive the end of the locking block to be inserted into the slot.

[0022] By adopting the above technical solution, when the upper shell covers the lower shell to form an outer shell, the end of the positioning strip protruding from the lower shell is embedded in the positioning cavity, the slot connects to the slide, and the elastic element drives the positioning block to slide and embed itself in the direction close to the slot. The end of the positioning block is embedded in the slot, and the operator can judge the fit between the upper shell and the lower shell by the sound of the positioning block embedding in the slot, thereby improving the assembly efficiency of the measuring switch.

[0023] Optionally, the end of the card slot where the card block is embedded in the card slot is provided with a guide surface. The guide surface is in the shape of a circular arc protrusion. The guide surface can abut against the inner wall of the positioning cavity and guide the end of the card block to be embedded in the card slot.

[0024] By adopting the above technical solution, the guide surface is in the shape of a circular arc protrusion. When the positioning strip is embedded in the positioning cavity, the guide surface abuts against the inner wall of the positioning cavity and guides the end of the positioning block to be embedded in the slot, reducing the wear between the positioning block and the upper housing, thereby extending the service life of the measuring switch.

[0025] In summary, this application includes at least one of the following beneficial technical effects: The inclusion of limit components and screwdrivers allows staff to easily access various screwdriver models, ensuring a one-to-one match between screwdrivers and screws. This improves the efficiency of measuring switch maintenance, shortens the maintenance cycle, and enhances the ease of use of the measuring switch. The positioning strip is designed so that the inner wall of the positioning hole abuts against the outer circumference of the screwdriver shank to form a limit, allowing multiple screwdrivers to be stored on the positioning strip, thus making it convenient for staff to take out screwdrivers of various models to disassemble the outer casing; The setting of the limiting strip makes it difficult for the positioning strip to shift within the positioning cavity, and the limiting strip is also less likely to shift within the inner wall of the limiting cavity, further improving the structural strength of the outer shell. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0027] Figure 2 This is an exploded view of an embodiment of this application, mainly showing the mounting cavity.

[0028] Figure 3 This is a partial cross-sectional view of an embodiment of this application, mainly showing the maintenance device.

[0029] Figure 4 This is a partial cross-sectional view of an embodiment of this application, mainly showing the card slot component.

[0030] Explanation of reference numerals in the attached drawings: 1. Upper housing; 11. Fixing hole; 12. Positioning cavity; 13. Slot; 2. Lower housing; 21. Threaded hole; 22. Limiting cavity; 23. Slide groove; 24. Clamping cavity; 25. Opening and closing cavity; 3. Maintenance device; 31. Limiting component; 311. Positioning strip; 3111. Positioning hole; 3112. Slide rail; 312. Limiting strip; 3121. Limiting hole; 313. Storage block; 3131. Storage cavity; 314. Clamping block; 315. Elastic element one; 316. Opening and closing plate; 317. Elastic element two; 32. Screwdriver; 4. Outer shell; 41. Mounting cavity; 5. Positioning component; 51. Positioning block; 511. Guide surface; 52. Elastic element three. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a measuring switch. (Refer to...) Figure 1 and Figure 2 The measuring switch includes an upper housing 1, a lower housing 2, and a maintenance device 3. The upper housing 1 covers the lower housing 2 to form an outer shell 4. The outer shell 4 has a mounting cavity 41 for installing electronic components. A current transformer is installed on the inner wall of the mounting cavity 41 to convert high voltage or large current into low voltage or small current proportionally for use by measuring instruments or protection devices. A temperature probe is installed on the inner wall of the mounting cavity 41 to monitor the temperature of the switch contacts or key components to prevent overheating failures. Built-in sensors and acquisition circuits are installed on the inner wall of the mounting cavity 41 for real-time monitoring of multiple parameters. An actuator is installed on the outer shell 4, which supports manual or automatic closing or opening. A communication module is installed on the surface of the outer shell 4, which is a bridge for interaction between the measuring switch and external systems, supporting data upload and remote control.

[0033] Reference Figure 1 and Figure 2 The upper housing 1 has multiple fixing holes 11 spaced apart on its surface for screws to pass through. The fixing holes 11 extend along their own axis through both sides of the upper housing 1 in the thickness direction. The lower housing 2 has multiple threaded holes 21 spaced apart on its surface for screws to tighten. When the lower housing 2 is closed and spliced ​​with the upper housing 1 to form the outer shell 4, the fixing holes 11 and the threaded holes 21 correspond one-to-one and are connected. The end of the screw passes through the fixing hole 11 and is threaded and tightened to the inner wall of the threaded hole 21. The maintenance device 3 includes a limiting component 31 and multiple screwdrivers 32. The limiting component 31 is connected between the lower housing 2 and the upper housing 1. The limiting component 31 allows multiple screwdrivers 32 to be embedded and limited on the surface of the outer shell 4, thereby facilitating the staff to take out the appropriate screwdrivers 32 and match them with the screws one by one, thereby improving the maintenance efficiency of the measuring switch, shortening the maintenance cycle of the measuring switch, and improving the ease of use of the measuring switch.

[0034] Reference Figure 2 and Figure 3The limiting component 31 includes multiple positioning strips 311, multiple limiting strips 312, multiple storage blocks 313, multiple clamping blocks 314, multiple elastic elements 315, multiple opening and closing plates 316, and multiple elastic elements 317. One end of the multiple positioning strips 311 is welded and fixed at intervals to the surface of the lower housing 2 facing the upper housing 1. The other end of the multiple positioning strips 311 protrudes from the end face of the lower housing 2. The arrangement direction of the positioning strips 311 is parallel to the length direction of the lower housing 2. Multiple positioning cavities 12 are opened on the surface of the upper housing 1 for the ends of the positioning strips 311 to be inserted. When the upper housing 1 covers the lower housing 2 to form the outer shell 4, the ends of the positioning strips 311 correspond to and are inserted into the positioning cavities 12. The outer wall of the positioning strip 311 abuts against the inner wall of the positioning cavity 12 and limits the sliding of the upper housing 1 on the surface of the lower housing 2, thereby improving the assembly efficiency of the measuring switch.

[0035] Reference Figure 2 and Figure 3 The positioning strip 311 has multiple positioning holes 3111 spaced apart on its surface for the screwdriver 32 shafts to pass through. The arrangement direction of the positioning holes 3111 is parallel to the length direction of the positioning strip 311. The axis of the positioning holes 3111 is parallel to the length direction of the lower housing 2. The positioning holes 3111 pass through both sides of the positioning strip 311 along their own axis, and the inner wall of the positioning holes 3111 abuts against the outer circumferential surface of the screwdriver 32 to form a limit, thereby fixing the multiple screwdrivers 32 on the housing 4.

[0036] Reference Figure 2 and Figure 3 Multiple limiting strips 312 are welded and fixed at one end along their length to the surface of the upper housing 1 facing the lower housing 2 at intervals. The other end of the multiple limiting strips 312 protrudes from the end face of the upper housing 1. The arrangement direction of the limiting strips 312 is parallel to the arrangement direction of the positioning strips 311, and the limiting strips 312 are located between two adjacent positioning strips 311. Multiple limiting cavities 22 are opened on the surface of the lower housing 2 for the ends of the limiting strips 312 to be inserted. When the upper housing 1 covers the lower housing 2 to form the outer shell 4, the ends of the limiting strips 312 correspond to the limiting cavities 22 and are inserted. The outer wall of the limiting strip 312 abuts against the inner wall of the limiting cavity 22 and limits the sliding of the lower housing 2 on the surface of the upper housing 1, further improving the assembly efficiency of the measuring switch.

[0037] Reference Figure 2 and Figure 3The surface of the limiting strip 312 is provided with multiple limiting holes 3121 for the screwdriver 32 shaft to pass through. The limiting holes 3121 correspond one-to-one with the positioning holes 3111. The axis of the limiting hole 3121 and the axis of the positioning hole 3111 coincide. The limiting hole 3121 passes through both sides of the limiting strip 312 along its own axis. When the end of the screwdriver 32 with the blade tip passes through the positioning hole 3111 and the limiting hole 3121 in sequence, the inner wall of the positioning hole 3111 and the inner wall of the limiting hole 3121 abut against the outer circumferential surface of the screwdriver 32 shaft to form a limit. While the screwdriver 32 is stored, the limiting positioning strip 311 and the limiting strip 312 slide, further improving the assembly efficiency of the outer shell 4.

[0038] Reference Figure 2 and Figure 3 The upper housing 1 and the lower housing 2 are provided with multiple sliding grooves 23 for sliding of the storage blocks 313. The storage blocks 313 correspond one-to-one with the positioning holes 3111, and the sliding direction of the storage blocks 313 is parallel to the axis of the positioning holes 3111. The end face of the storage blocks 313 facing the positioning strip 311 is provided with a storage cavity 3131 for the screwdriver 32 tip to be inserted. The inner wall of the storage cavity 3131 abuts against the outer peripheral surface of the screwdriver 32 tip to form a shield, so that the screwdriver 32 tip is not easily damaged by impact, thereby extending the service life of the screwdriver 32.

[0039] Reference Figure 2 and Figure 3 Multiple clamping cavities 24 for sliding of clamping blocks 314 are spaced apart on the surface of the lower housing 2 and the surface of the upper housing 1. The sliding direction of the clamping blocks 314 is parallel to the width direction of the lower housing 2. The clamping blocks 314 correspond one-to-one with the storage blocks 313. The clamping blocks 314 and the storage blocks 313 are located at both ends of the arrangement direction of the positioning strips 311. When the screwdriver 32 tip is inserted into the storage cavity 3131 and the end face of the screwdriver 32 handle is flush with the end face of the clamping block 314, the clamping block 314 is driven to slide along the inner wall of the clamping cavity 24 toward the screwdriver 32. The end face of the clamping block 314 abuts against the end face of the screwdriver 32 handle and confines the screwdriver 32 tip in the storage cavity 3131, thereby limiting the two ends of the screwdriver 32 in the axial direction and improving the storage stability of the screwdriver 32 on the outer shell 4.

[0040] Reference Figure 2 and Figure 3 The elastic element 315 can be a compression spring or a tension spring. In this embodiment, the elastic element 315 is a compression spring with a certain deformation capability. One end of the elastic element 315 in the direction of elastic force is connected to the inner wall of the clamping cavity 24, and the other end of the elastic element 315 in the direction of elastic force is connected to the surface of the clamping block 314. The elastic element 315 has the elastic force to drive the clamping block 314 to slide towards the screwdriver 32, and the end face of the clamping block 314 abuts against the end face of the screwdriver 32 handle to form a limiting position.

[0041] Reference Figure 2 and Figure 3 The opening and closing plate 316 corresponds one-to-one with the storage block 313 and is connected to the surface of the storage block 313 facing the positioning strip 311. The inner wall of the slide groove 23 has an opening and closing cavity 25 for the opening and closing plate 316 to slide. The opening and closing cavity 25 corresponds one-to-one with the clamping cavity 24 and is connected to the clamping cavity 24 and the slide groove 23. The elastic element 317 can be a compression spring or a tension spring. In this embodiment, the elastic element 317 is a compression spring and has a certain deformation capacity. 17 corresponds one-to-one with the storage block 313. One end of the elastic element 2 317 in the elastic direction is connected to the inner wall of the slide groove 23, and the other end of the elastic element 2 317 in the elastic direction is connected to the plate surface of the storage block 313 away from the opening and closing plate 316. The elastic element 2 317 has the elasticity to drive the storage block 313 to slide towards the positioning strip 311, and the plate surface of the opening and closing plate 316 has the tendency to cover the clamping cavity 24 and limit the clamping block 314 to be located in the clamping cavity 24.

[0042] Reference Figure 2 and Figure 3 When the screwdriver 32 with the tip has multiple positioning holes 3111 and multiple limiting holes 3121 inserted into the receiving cavity 3131, the tip of the screwdriver 32 abuts against the inner wall of the receiving cavity 3131 and pushes the receiving block 313 to slide away from the positioning strip 311 along the inner wall of the slide groove 23, causing the opening and closing plate 316 to slide away from the clamping cavity 24 along the inner wall of the opening and closing cavity 25. The sealing effect of the opening and closing plate 316 on the clamping cavity 24 disappears, and the end face of the screwdriver 32 handle is flush with the end face of the clamping block 314. The elastic element 315 drives the clamping block 314 to slide along the inner wall of the clamping cavity 24 towards the screwdriver 32. The end face of the clamping block 314 abuts against the end face of the screwdriver 32 handle to form a limit.

[0043] Reference Figure 3 and Figure 4The positioning strip 311 is equipped with a locking component 5, which can alert the operator to the closing status of the upper housing 1 and the lower housing 2. The locking component 5 includes a locking block 51 and an elastic element 52. The end face of the positioning strip 311 facing the positioning cavity 12 has a slide 3112 for the locking block 51 to slide. The sliding direction of the locking block 51 is parallel to the axis of the positioning hole 3111. The inner wall of the positioning cavity 12 has a slot 13 for the end of the locking block 51 to be inserted. The elastic element 52 can be a compression spring or a tension spring. In this embodiment, the elastic element 52 is a compression spring, which has a certain deformation capacity and elasticity. One end of the elastic component 52 in the elastic direction is connected to the inner wall of the slot 13, and the other end of the elastic component 52 in the elastic direction is connected to the end face of the positioning block 51. The elastic component 52 has the tendency to drive the end of the positioning block 51 into the slot 13. The end of the positioning block 51 that is embedded in the slot 13 is provided with a guide surface 511. The guide surface 511 is in the shape of a rounded protrusion. When the positioning strip 311 is embedded in the positioning cavity 12, the guide surface 511 abuts against the inner wall of the positioning cavity 12 and guides the end of the positioning block 51 into the slot 13, reducing the wear between the positioning block 51 and the upper housing 1, thereby extending the service life of the measuring switch.

[0044] The implementation principle of a measuring switch according to an embodiment of this application is as follows: When the operator needs to repair the measuring switch, the clamping block 314 is driven to slide along the inner wall of the clamping cavity 24 away from the screwdriver 32. The end face of the clamping block 314 is flush with the bottom surface of the opening and closing plate 316. The elastic element 317 drives the storage block 313 to slide towards the positioning strip 311. The opening and closing plate 316 covers the clamping cavity 24 and confines the clamping block 314 within the clamping cavity 24. The storage block 313 drives the screwdriver 32 to slide along the inner wall of the positioning hole 3111 away from the positioning strip 311, thereby realizing the removal of multiple screwdrivers 32. The multiple screwdrivers 32 are matched with the screw models on the outer shell 4. The operator can directly select the appropriate screwdriver 32 according to the screw, avoiding the situation where the screwdriver 32 tip does not match the screw, thereby improving the repair efficiency of the measuring switch, shortening the repair cycle of the measuring switch, and improving the ease of use of the measuring switch.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A measuring switch, characterized in that: The device includes an upper housing (1), a lower housing (2), and a maintenance device (3). The upper housing (1) has a plurality of fixing holes (11) spaced apart on its surface for screws to pass through. The lower housing (2) has a plurality of threaded holes (21) spaced apart on its surface for screws to tighten. When the lower housing (2) covers the upper housing (1) to form an outer shell (4), the fixing holes (11) and the threaded holes (21) correspond to each other and are connected. The screw ends pass through the fixing holes (11) and are threaded and tightened to fix the screws to the inner wall of the threaded holes (21). The maintenance device (3) includes a limiting component (31) and a plurality of screwdrivers (32). The limiting component (31) is connected between the lower housing (2) and the upper housing (1). The limiting component (31) can limit the plurality of screwdrivers (32) to the surface of the outer shell (4).

2. The measuring switch according to claim 1, characterized in that: The limiting component (31) includes multiple positioning strips (311). One end of each positioning strip (311) is connected at intervals to the surface of the lower housing (2) facing the upper housing (1). The other end of each positioning strip (311) protrudes from the end face of the lower housing (2). The surface of the upper housing (1) is provided with multiple positioning cavities (12) for the ends of the positioning strips (311) to be inserted. The surface of each positioning strip (311) is provided with multiple positioning holes (3111) for the screwdriver (32) shank to pass through. The arrangement direction of the positioning holes (3111) is parallel to the length direction of the positioning strips (311). The inner wall of the positioning holes (3111) abuts against the outer circumferential surface of the screwdriver (32) shank to form a limiting.

3. The measuring switch according to claim 2, characterized in that: The limiting component (31) also includes multiple limiting strips (312). One end of each limiting strip (312) is connected at intervals to the surface of the upper housing (1) facing the lower housing (2). The other end of each limiting strip (312) protrudes from the end face of the upper housing (1). The surface of the lower housing (2) is provided with multiple limiting cavities (22) for the ends of the limiting strips (312) to be inserted. The limiting strips (312) are located between two adjacent positioning strips (311). The surface of the limiting strips (312) is provided with multiple limiting holes (3121) for the screwdriver (32) shank to pass through. The limiting holes (3121) correspond one-to-one with the positioning holes (3111). The inner wall of the limiting hole (3121) can abut against the outer circumferential surface of the screwdriver (32) shank to form a limiting.

4. The measuring switch according to claim 3, characterized in that: The limiting component (31) also includes a plurality of storage blocks (313), which are spaced apart and connected to the surface of the upper housing (1) and the surface of the lower housing (2). The arrangement direction of the storage blocks (313) is parallel to the length direction of the positioning strip (311). The storage blocks (313) correspond one-to-one with the positioning holes (3111), and the surface of the storage blocks (313) is provided with a storage cavity (3131) for the screwdriver (32) tip to be inserted. The inner wall of the storage cavity (3131) abuts against the outer peripheral surface of the screwdriver (32) tip to form a shield.

5. The measuring switch according to claim 4, characterized in that: The limiting component (31) also includes multiple clamping blocks (314). Multiple clamping cavities (24) for the clamping blocks (314) to slide are spaced apart on the surface of the lower housing (2) and the surface of the upper housing (1). The sliding direction of the clamping blocks (314) is perpendicular to the axis of the positioning hole (3111). The clamping blocks (314) correspond one-to-one with the storage blocks (313). The clamping blocks (314) and the storage blocks (313) are located at both ends of the arrangement direction of the positioning strips (311). When the screwdriver (32) tip is embedded in the storage cavity (3131), the clamping blocks (314) are driven to slide towards the screwdriver (32). The end face of the clamping block (314) abuts against the end face of the screwdriver (32) handle and limits the screwdriver (32) tip to the storage cavity (3131).

6. The measuring switch according to claim 5, characterized in that: The limiting component (31) also includes a plurality of elastic elements (315), each corresponding to a clamping block (314). One end of the elastic element (315) in the elastic direction is connected to the inner wall of the clamping cavity (24), and the other end of the elastic element (315) in the elastic direction is connected to the surface of the clamping block (314). The elastic element (315) has the elastic force to drive the clamping block (314) to slide towards the screwdriver (32), and the end face of the clamping block (314) abuts against the end face of the screwdriver (32) handle to form a limiting force.

7. The measuring switch according to claim 4, characterized in that: The limiting component (31) also includes multiple opening and closing plates (316). Multiple sliding grooves (23) for sliding of the storage blocks (313) are spaced apart on the surfaces of the lower housing (2) and the upper housing (1). The sliding direction of the storage blocks (313) is parallel to the axis of the positioning holes (3111). The opening and closing plates (316) correspond one-to-one with the storage blocks (313) and are connected to the surface of the storage blocks (313) facing the positioning strip (311). The inner wall of the sliding grooves (23) is provided with opening and closing mechanisms. The opening and closing cavity (25) of the plate (316) is slidable. The opening and closing cavity (25) corresponds to and is connected to the clamping cavity (24). When the storage block (313) slides towards the positioning strip (311), the opening and closing plate (316) covers the clamping cavity (24) and confines the clamping block (314) within the clamping cavity (24). When the storage block (313) slides away from the positioning strip (311), the covering effect of the opening and closing plate (316) on the clamping cavity (24) disappears.

8. The measuring switch according to claim 7, characterized in that: The limiting component (31) also includes a plurality of elastic elements (317), each corresponding to a storage block (313). One end of the elastic element (317) in the elastic direction is connected to the inner wall of the slide groove (23), and the other end of the elastic element (317) in the elastic direction is connected to the surface of the storage block (313) away from the opening and closing plate (316). The elastic element (317) has the elasticity to drive the storage block (313) to slide towards the positioning strip (311), and the surface of the opening and closing plate (316) tends to cover the clamping cavity (24).

9. The measuring switch according to claim 2, characterized in that: The positioning strip (311) is connected to a locking assembly (5). The locking assembly (5) includes a locking block (51) and an elastic element (52). The end face of the positioning strip (311) protruding from the lower housing (2) is provided with a slide (3112) for the locking block (51) to slide. The sliding direction of the locking block (51) is parallel to the axis of the positioning hole (3111). The inner wall of the positioning cavity (12) is provided with a slot (13) for the end of the locking block (51) to be inserted. One end of the elastic element (52) in the elastic direction is connected to the inner wall of the slide (3112), and the other end of the elastic element (52) in the elastic direction is connected to the surface of the locking block (51). The elastic element (52) has the tendency to elastically drive the end of the locking block (51) to be inserted into the slot (13).

10. The measuring switch according to claim 9, characterized in that: The end of the locking block (51) embedded in the slot (13) is provided with a guide surface (511). The guide surface (511) is in the shape of a circular arc protrusion. The guide surface (511) can abut against the inner wall of the positioning cavity (12) and guide the end of the locking block (51) to be embedded in the slot (13).

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