Pen type ultrasonic thickness gauge

Abstract

The utility model discloses a pen-type ultrasonic thickness gauge, which belongs to the technical field of thickness detection, and aims to solve the problem that the probe of the existing pen-type electromagnetic ultrasonic thickness gauge is inconvenient to replace, the pen-type ultrasonic thickness gauge comprises a probe (1) and a thickness gauge host (2) which are connected front and back, and the front end of the thickness gauge host (2) is provided with a positioning block (21). Spring positioning pins (22) are arranged on the left side and the right side of the positioning block (21), the probe (1) comprises a containing cavity (11) and a cavity wall (12), positioning through holes (13) are formed in the left side and the right side of the cavity wall (12), the positioning block (21) is inserted into the containing cavity (11) in a matched mode, the spring positioning pins (22) are inserted into the positioning through holes (13) in a matched mode, and the probe (1) and the thickness gauge host (2) can be separated. According to the pen-type ultrasonic thickness gauge, the probe dismounting and mounting mode is changed from a bolt fixing mode to a rapid plugging and unplugging mode through the spring positioning pin, so that the dismounting and mounting efficiency of the probe is improved.

Description

Technical Field

[0001] This utility model relates to the field of thickness detection technology, specifically a pen-type ultrasonic thickness gauge. Background Technology

[0002] The pen-type ultrasonic thickness gauge is a small, portable, and powerful measuring tool primarily used for measuring the thickness of metals or other magnetically conductive materials. It requires no coupling agent, supports non-contact measurement, and is suitable for various metal materials such as titanium, aluminum, copper, stainless steel, alloy steel, carbon steel, and cast steel. With its high precision, non-contact measurement, wide applicability, and portability, the pen-type ultrasonic thickness gauge has become an indispensable measuring tool in industrial production.

[0003] Pen-type electromagnetic ultrasonic thickness gauges typically consist of a probe and a main unit. During testing, different probe sizes are often required depending on the working conditions and the object being tested. Currently, the most common connection between the probe and the main unit is via bolts. This design necessitates the use of a screwdriver for installation and removal when changing the probe, and the process involves installing and securing small parts such as bolts and screwdrivers, making the replacement process rather cumbersome. Utility Model Content

[0004] To address the problem of inconvenient probe replacement in pen-type electromagnetic ultrasonic thickness gauges, this invention provides a pen-type ultrasonic thickness gauge that changes the probe assembly / disassembly method from bolt fixing to a quick-release method using spring-loaded positioning pins, thereby improving the efficiency of probe assembly / disassembly.

[0005] The technical solution adopted by this utility model embodiment to solve its technical problem is:

[0006] A pen-type ultrasonic thickness gauge includes a probe and a thickness gauge main unit connected at the front and rear. A positioning block is provided at the front end of the thickness gauge main unit, and spring positioning pins are provided on both the left and right sides of the positioning block. The probe has a receiving cavity and a cavity wall. The receiving cavity is located at the rear of the probe, and positioning through holes are provided on both the left and right sides of the cavity wall. The positioning block is matched and inserted into the receiving cavity, and the spring positioning pins are matched and inserted into the positioning through holes. The probe and the thickness gauge main unit can be separated.

[0007] The positioning block has positioning pin mounting slots on both the left and right sides. The spring positioning pin is located in the positioning pin mounting slot. The spring positioning pin contains a spring and a pin connected in sequence. The spring can provide a restoring force to the pin. The outer surface of the pin contains a cylindrical section and a spherical crown section connected in sequence.

[0008] A portion of the cylindrical section is located outside the mounting groove of the locating pin. The cylindrical section of the spring locating pin is matched and inserted into the locating through hole. After pressing the spring locating pin inward, the outer end of the cylindrical section can move to the inner side of the inner end of the locating through hole, and the probe can move away from the thickness gauge host. The cavity wall of the probe can contact the spherical cap section.

[0009] The spherical crown section is located outside the outer end of the positioning through hole, and the outer surfaces of both sides of the cavity wall are provided with annular grooves, with the positioning through hole located in the center of the groove.

[0010] The inner surfaces of both sides of the cavity wall are provided with guide grooves. The guide grooves are located at the rear end of the cavity wall and can squeeze the spring positioning pin and make the spring positioning pin move inward.

[0011] The guide groove extends in the front-to-back direction. The front end of the guide groove is connected to the positioning through hole, and the rear end of the guide groove is located on the rear end face of the probe. The rear end of the guide groove can contact the ball crown section of the pin.

[0012] The thickness gauge main unit contains a main housing, and a positioning block is connected to the main housing by multiple first screws. The front part of the positioning block is provided with a pin mounting groove, which contains a first upper pin connector and a first lower pin connector arranged vertically. Both the first upper pin connector and the first lower pin connector contain pins. The number of pins in the first upper pin connector is less than the number of pins in the first lower pin connector. The outer circumferential surface of the positioning block is provided with multiple screw mounting grooves, which extend in the front-back direction and correspond one-to-one with the first screws.

[0013] The cavity contains a probe circuit board, which has a second upper pin connector and a second lower pin connector arranged vertically. Both the second upper pin connector and the second lower pin connector have pins and holes. The hole of the second upper pin connector is matched and plugged into the pin of the first upper pin connector, and the hole of the second lower pin connector is matched and plugged into the pin of the first lower pin connector. The probe contains a thickness sensor, which is located in front of the probe circuit board and is connected to the pins of the second upper pin connector and the second lower pin connector.

[0014] The probe circuit board is connected to the cavity wall by multiple second screws. The inner circumferential surface of the cavity wall is provided with multiple screw mounting grooves, which extend in the front-back direction and correspond one-to-one with the second screws.

[0015] The main housing contains a host circuit board, on which a control unit and a Bluetooth communication unit are provided. The main housing is provided with a USB interface and a memory card connection interface. The first upper pin connector, the first lower pin connector, the Bluetooth communication unit, the USB interface and the memory card connection interface are all connected to the control unit.

[0016] The beneficial effect of this utility model embodiment is that the pen-type ultrasonic thickness gauge changes the probe assembly and disassembly method from bolt fixing to quick insertion and removal via spring positioning pins, thereby improving the efficiency of probe assembly and disassembly. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0018] Figure 1 This is an overall schematic diagram of the pen-type ultrasonic thickness gauge of this utility model when using a room temperature probe.

[0019] Figure 2 This is an exploded view of the pen-type ultrasonic thickness gauge described in this utility model when using a room-temperature probe.

[0020] Figure 3 This is a schematic diagram of the thickness gauge main unit.

[0021] Figure 4 This is a rear-view diagram of the probe.

[0022] Figure 5 This is a front-view diagram of the probe.

[0023] Figure 6 This is a schematic diagram of the positioning block.

[0024] Figure 7 This is a cross-sectional view of the spring locating pin in the extended state.

[0025] Figure 8 This is a cross-sectional view of the spring locating pin in the retracted state.

[0026] Figure 9 This is an overall schematic diagram of the pen-type ultrasonic thickness gauge of this utility model when using a high-temperature probe.

[0027] Figure 10 This is a schematic diagram of the module connections inside the thickness gauge main unit.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Probe; 2. Thickness gauge main unit;

[0030] 11. Receiving cavity; 12. Cavity wall; 13. Positioning through hole; 14. Probe circuit board; 15. Second screw; 16. Room temperature probe; 17. High temperature probe;

[0031] 21. Positioning block; 22. Spring positioning pin; 23. Main housing; 24. First screw;

[0032] 121. Recessed section; 122. Guide groove; 123. Screw mounting recess;

[0033] 141. Second upper pin connector; 142. Second lower pin connector;

[0034] 211. Locating pin mounting slot; 212. Pin mounting groove; 213. First upper pin connector; 214. First lower pin connector; 215. Screw mounting groove;

[0035] 221. Spring; 222. Pin;

[0036] 231. Control unit; 232. Bluetooth communication unit; 233. USB interface; 234. Memory card connection interface; 2221. Spherical crown section; 2222. Cylindrical surface section. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] For ease of understanding and description, the following description of this utility model uses a combination of absolute position and spatial rectangular coordinate system. Unless otherwise specified, the directional term "up" corresponds to the positive direction of the Z-axis, "down" corresponds to the negative direction of the Z-axis, "left" corresponds to the positive direction of the X-axis, "right" corresponds to the negative direction of the X-axis, "front" corresponds to the positive direction of the Y-axis, and "back" corresponds to the negative direction of the Y-axis. This utility model is described from the perspective of the reader or user, but the above directional terms should not be understood or interpreted as limiting the scope of protection of this utility model. Regarding the dimensions, angles, and parameters of the components, those skilled in the art can determine or replace them according to actual needs or a limited number of experiments.

[0039] like Figures 1 to 9 As shown in the embodiment of this utility model, a pen-type ultrasonic thickness gauge includes a probe 1 and a thickness gauge main unit 2 connected front and rear (detachably). A positioning block 21 is provided at the front end of the thickness gauge main unit 2, and spring positioning pins 22 are provided on both the left and right sides of the positioning block 21. The probe 1 contains a receiving cavity 11 and a cavity wall 12. The receiving cavity 11 is located at the rear of the probe 1, and the cavity wall 12 surrounds the receiving cavity 11. Positioning through holes 13 are provided on both the left and right sides of the cavity wall 12. The positioning block 21 is matched and inserted into the receiving cavity 11, and the spring positioning pins 22 are matched and inserted into the positioning through holes 13. The probe 1 and the thickness gauge main unit 2 can be separated.

[0040] The probe 1 can be of various types to meet testing needs. These different types of probes 1 can be interchangeably mounted on the positioning block 21 of the thickness gauge host 2. The probe 1 and the thickness gauge host 2 are detachably connected. Once the probe 1 and the thickness gauge host 2 are integrated, the probe 1 cannot move or rotate relative to the thickness gauge host 2. For example, the probe 1 can include a room temperature probe 16 and a high temperature probe 17. All types have the same rear structure, allowing for replacement of the corresponding probe 1 as needed. Specifically, the room temperature probe 16 is used when measuring the thickness of room temperature metals or other magnetically conductive materials; the high temperature probe 17 is used when measuring the thickness of high temperature metals or other magnetically conductive materials. The probe 1 and the thickness gauge host 2 can be quickly disassembled and installed. The probe 1 and the thickness gauge host 2 have a quick-plug function, enabling rapid replacement of the required probe 1 and improving the efficiency of probe assembly and disassembly.

[0041] like Figures 7 to 8 As shown, positioning pin mounting grooves 211 are provided on both the left and right sides of the positioning block 21. The spring positioning pin 22 is located in the positioning pin mounting groove 211. The spring positioning pin 22 contains a spring 221 and a pin 222 connected in sequence from the inside to the outside. The spring 221 is located in the positioning pin mounting groove 211, and a part of the pin 222 is located in the positioning pin mounting groove 211. The spring 221 can provide a restoring force to the pin 222. The outer surface of the pin 222 contains a cylindrical section 2222 and a spherical cap section 2221 connected in sequence from the inside to the outside along the axial direction.

[0042] A portion of the cylindrical section 2222 is located outside the positioning pin mounting groove 211. The cylindrical section 2222 of the pin 222 is matched and inserted into the positioning through hole 13. After pressing the spring positioning pin 22 inward, the outer end of the cylindrical section 2222 can move to the inner side of the inner end of the positioning through hole 13. The probe 1 can move away from the thickness gauge host 2. The cavity wall 12 of the probe 1 can contact the spherical cap section 2221 and make the pin 222 continue to move inward until the pin 222 disengages from the positioning through hole 13.

[0043] To ensure the stability of probe 1 and thickness gauge main unit 2 when connected, the spherical cap section 2221 is located outside the outer end of the positioning through hole 13. To facilitate pressing the spring positioning pin 22 inward with a finger and releasing the spring positioning pin 22 from locking probe 1, annular grooves 121 are provided on the outer surfaces of both sides of the cavity wall 12, and the positioning through hole 13 is located in the center of the groove 121.

[0044] The outer diameter of the groove 121 is approximately 10mm to 15mm, and the depth of the groove 121 is approximately 2mm to 5mm. Due to the presence of the groove 121, the outer end of the cylindrical section 2222 (which is also the inner end of the spherical cap section 2221) can be easily moved to the inner side of the inner end of the positioning through hole 13 using the thumb and forefinger of one hand (without the aid of additional tools). This facilitates the contact between the cavity wall 12 of the probe 1 and the spherical cap section 2221, as well as the separation of the probe 1 from the thickness gauge main unit 2. Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown.

[0045] like Figures 4 to 5 As shown, to facilitate the easy entry of the spring positioning pin 222 into the positioning through hole 13 during the installation of the probe 1 and the thickness gauge main unit 2, guide grooves 122 are provided on the inner surfaces of both sides of the cavity wall 12. The guide grooves 122 are located at the rear end of the cavity wall 12. The guide grooves 122 can compress the spring positioning pin 22 and move it inward, guiding the pin 222 into the positioning through hole 13. Preferably, the guide grooves 122 extend in the front-rear direction, with the front end of the guide grooves 122 connected to the positioning through hole 13, and the rear end of the guide grooves 122 located on the rear end face of the probe 1. The rear end of the guide grooves 122 can contact the spherical crown section 2221 of the pin 222.

[0046] like Figures 4 to 6 As shown, the thickness gauge main unit 2 includes a main housing 23. The positioning block 21 and the main housing 23 are connected front and rear by multiple first screws 24. The front part of the positioning block 21 is provided with a pin mounting groove 212. The pin mounting groove 212 contains a first upper pin connector 213 and a first lower pin connector 214 arranged vertically. Both the first upper pin connector 213 and the first lower pin connector 214 contain multiple pins. The number of pins in the first upper pin connector 213 is less than the number of pins in the first lower pin connector 214. The outer peripheral surface of the positioning block 21 is provided with multiple screw mounting grooves 215. The screw mounting grooves 215 extend in the front and rear direction and correspond one-to-one with the first screws 24.

[0047] The receiving cavity 11 contains a probe circuit board 14. The probe circuit board 14 has a second upper pin connector 141 and a second lower pin connector 142 arranged vertically. Both the second upper pin connector 141 and the second lower pin connector 142 have multiple pins and holes. The holes of the second upper pin connector 141 are matched and plugged into the pins of the first upper pin connector 213, and the holes of the second lower pin connector 142 are matched and plugged into the pins of the first lower pin connector 214. The probe 1 contains a thickness sensor, which is located in front of the probe circuit board 14. The thickness sensor is electrically connected to the pins of the second upper pin connector 141 and the second lower pin connector 142.

[0048] like Figures 2 to 6 As shown, the probe circuit board 14 is connected to the front of the cavity wall 12 by a plurality of second screws 15. The inner circumferential surface of the cavity wall 12 is provided with a plurality of screw mounting grooves 123. The plurality of screw mounting grooves 123 extend in the front-back direction. The plurality of screw mounting grooves 123 correspond one-to-one with the second screws 15. The second screws 15 correspond one-to-one with the first screws 24 in the front and back directions.

[0049] like Figure 10 As shown, the main housing 23 contains a host circuit board, on which a control unit and a Bluetooth communication unit are provided. The main housing 23 is provided with a USB interface and a memory card connection interface 234. The first upper pin connector 213, the first lower pin connector 214, the Bluetooth communication unit, the USB interface and the memory card connection interface 234 are all connected to the control unit.

[0050] The thickness sensor inside probe 1 communicates with the control unit 231. The Bluetooth communication unit 232 can pair with a mobile phone or computer via Bluetooth. The memory card connection interface 234 can connect to a memory card (such as a TF card), and the USB interface 233 connects to the computer via a USB cable. The control unit 231 can wirelessly communicate with a mobile phone or computer via Bluetooth communication unit 232. The control unit 231 can also write data to a memory card via the memory card connection interface 234. The control unit 231 can also establish a wired communication connection with the computer.

[0051] The working process of the pen-type ultrasonic thickness gauge is described below.

[0052] like Figures 1 to 3As shown, when measuring the thickness of metals or other conductive materials at room temperature, the room temperature probe 16 is connected to the thickness gauge host 2. Specifically, the positioning block 21 of the thickness gauge host 2 is inserted into the receiving cavity 11 of the room temperature probe 16. The guide groove 122 of the room temperature probe 16 guides the spring positioning pin 22 into the positioning through hole 13 of the room temperature probe 16. The spring 221 causes the pin 222 to pop out of the positioning through hole 13, completing the connection and fixation between the room temperature probe 16 and the thickness gauge host 2. The room temperature probe 16 cannot move or rotate relative to the thickness gauge host 2. At this time, the pen-type ultrasonic thickness gauge can measure the thickness of metals or other conductive materials at room temperature.

[0053] When measuring the thickness of high-temperature metals or other conductive materials, first remove the room-temperature probe 16. Press the spring positioning pin 22 inwards with your left thumb and forefinger. After the spherical crown section 2221 of the spring positioning pin 22 enters the positioning through-hole 13, hold the thickness gauge main unit 2 with your right hand and move it away from the room-temperature probe 16. The probe 1 and the thickness gauge main unit 2 can then be quickly separated. Next, connect the high-temperature probe 17 to the thickness gauge main unit 2. The positioning block 21 of the thickness gauge main unit 2 is inserted into the receiving cavity 11 of the high-temperature probe 17. The guide groove 122 of the high-temperature probe 17 guides the spring positioning pin 22 into the positioning through-hole 13 of the high-temperature probe 17. The spring 221 causes the pin 222 to pop out of the positioning through-hole 13 of the high-temperature probe 17, completing the connection and fixation between the high-temperature probe 17 and the thickness gauge main unit 2. The high-temperature probe 17 cannot move or rotate relative to the thickness gauge main unit 2. At this time, the pen-type ultrasonic thickness gauge can measure the thickness of high-temperature metals or other conductive materials. Figure 9 As shown.

[0054] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model should still fall within its coverage. Furthermore, the technical features, technical solutions, and embodiments of this utility model can be freely combined and used.

Claims

1. A pen-type ultrasonic thickness gauge, characterized in that, The pen-type ultrasonic thickness gauge includes a probe (1) and a thickness gauge main unit (2) connected front and rear. A positioning block (21) is provided at the front end of the thickness gauge main unit (2). Spring positioning pins (22) are provided on both the left and right sides of the positioning block (21). The probe (1) contains a receiving cavity (11) and a cavity wall (12). The receiving cavity (11) is located at the rear of the probe (1). Positioning through holes (13) are provided on both the left and right sides of the cavity wall (12). The positioning block (21) is matched and inserted into the receiving cavity (11). The spring positioning pins (22) are matched and inserted into the positioning through holes (13). The probe (1) and the thickness gauge main unit (2) can be separated.

2. The pen-type ultrasonic thickness gauge according to claim 1, characterized in that, The positioning block (21) has positioning pin mounting grooves (211) on both the left and right sides. The spring positioning pin (22) is located in the positioning pin mounting groove (211). The spring positioning pin (22) contains a spring (221) and a pin (222) connected in sequence. The spring (221) can provide a restoring force to the pin (222). The outer surface of the pin (222) contains a cylindrical section (2222) and a spherical crown section (2221) connected in sequence.

3. The pen-type ultrasonic thickness gauge according to claim 2, characterized in that, A portion of the cylindrical section (2222) is located outside the positioning pin mounting groove (211). The cylindrical section (2222) of the spring positioning pin (22) is matched and inserted into the positioning through hole (13). After pressing the spring positioning pin (22) inward, the outer end of the cylindrical section (2222) can move to the inner side of the inner end of the positioning through hole (13), and the probe (1) can move away from the thickness gauge host (2). The cavity wall (12) of the probe (1) can contact the spherical cap section (2221).

4. The pen-type ultrasonic thickness gauge according to claim 3, characterized in that, The spherical crown segment (2221) is located outside the outer end of the positioning through hole (13). The outer surfaces of the left and right sides of the cavity wall (12) are provided with annular grooves (121), and the positioning through hole (13) is located in the center of the groove (121).

5. The pen-type ultrasonic thickness gauge according to claim 2, characterized in that, The inner surfaces of the left and right sides of the cavity wall (12) are provided with guide grooves (122). The guide grooves (122) are located at the rear end of the cavity wall (12). The guide grooves (122) can squeeze the spring positioning pin (22) and make the spring positioning pin (22) move inward.

6. The pen-type ultrasonic thickness gauge according to claim 5, characterized in that, The guide groove (122) extends in the front-to-back direction. The front end of the guide groove (122) is connected to the positioning through hole (13). The rear end of the guide groove (122) is located on the rear end face of the probe (1). The rear end of the guide groove (122) can contact the ball crown section (2221) of the pin (222).

7. The pen-type ultrasonic thickness gauge according to claim 1, characterized in that, The thickness gauge main unit (2) contains a main housing (23). The positioning block (21) and the main housing (23) are connected front and rear by multiple first screws (24). The front part of the positioning block (21) is provided with a pin mounting groove (212). The pin mounting groove (212) contains a first upper pin connector (213) and a first lower pin connector (214) arranged vertically. Both the first upper pin connector (213) and the first lower pin connector (214) contain pins. The number of pins in the first upper pin connector (213) is less than the number of pins in the first lower pin connector (214). The outer peripheral surface of the positioning block (21) is provided with multiple screw mounting grooves (215). The screw mounting grooves (215) extend in the front and rear direction and correspond one-to-one with the first screws (24).

8. The pen-type ultrasonic thickness gauge according to claim 7, characterized in that, The cavity (11) contains a probe circuit board (14), which has a second upper pin connector (141) and a second lower pin connector (142) arranged vertically. Both the second upper pin connector (141) and the second lower pin connector (142) have pins and holes. The hole of the second upper pin connector (141) is matched and plugged into the pin of the first upper pin connector (213), and the hole of the second lower pin connector (142) is matched and plugged into the pin of the first lower pin connector (214). The probe (1) contains a thickness sensor, which is located in front of the probe circuit board (14) and is connected to the pin of the second upper pin connector (141) and the pin of the second lower pin connector (142).

9. The pen-type ultrasonic thickness gauge according to claim 7, characterized in that, The probe circuit board (14) is connected to the cavity wall (12) by multiple second screws (15). Multiple screw mounting grooves (123) are provided on the inner circumferential surface of the cavity wall (12). The multiple screw mounting grooves (123) extend in the front-back direction and correspond one-to-one with the second screws (15).

10. The pen-type ultrasonic thickness gauge according to claim 7, characterized in that, The main housing (23) contains a host circuit board, on which a control unit and a Bluetooth communication unit are provided. The main housing (23) is provided with a USB interface and a memory card connection interface. The first upper pin connector (213), the first lower pin connector (214), the Bluetooth communication unit, the USB interface and the memory card connection interface are all connected to the control unit.

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