Digital display depth measuring scale

Abstract

The utility model relates to the technical field of measuring instruments, and provides a digital display depth measuring scale which comprises a plastic handle shell and an ejector rod assembly installed on one side of the plastic handle shell, the plastic handle shell comprises a handle lower shell and a handle upper shell, and the handle upper shell and the handle lower shell are installed in an up-down clamping mode. A circular hole is formed in one end, close to the ejector rod assembly, of the handle upper shell, and an aluminum alloy meter body is filled in the circular hole; according to the utility model, the structural form is modified on the basis of the original depth gauge, the mode that the aluminum alloy gauge body is additionally arranged on the plastic handle shell which is clamped up and down is adopted, the handheld structure is optimized, the weight of the whole structure is reduced, and the rotatable structural form of the movable grid assembly is added, so that the movable grid dial plate can rotate within a certain angle; therefore, the visual reading is optimized, and the problems that in the prior art, a handheld product is too heavy, and the reading mode is not flexible are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, and specifically, to a digital display depth measuring ruler. Background Art

[0002] A depth ruler is used to measure the depth of tubular parts. It is mainly used to measure the depth of parts with a variety of probes of different lengths. The specific implementation is as follows:

[0003] First, insert a positioning pin on the measuring rod, put on a compression spring, and then put on a sleeve rod. Glue the sleeve rod fittings at both ends. Fix the fixed grating bar in the groove of the ruler blank with glue or double-sided tape, and then paste the scale film on the fixed grating. At this time, assemble the sleeve rod, handle, fixed grating seat, and handle back cover with glue and pins respectively. Then, weld the touch switch, positive electrode piece, negative electrode piece, capacitor, and chip on the PCB board; insert the liquid crystal piece into the liquid crystal pressing block, and then put the liquid crystal piece into the cover shell from directly above. Connect the liquid crystal pressing block through screws from the inside of the cover shell. At this time, the liquid crystal is fixed by the pressing strip on the left side of the cover shell and the liquid crystal pressing block on the right side; then, put the glass piece with adhesive paper pasted on it into the cover shell from directly above and fix it on the step reserved on the periphery of the cover shell; insert the conductive adhesive into the liquid crystal pressing block from the inside of the cover shell, and then install the welded PCB board in the cover shell with screws. At this time, the PCB board can transmit data by connecting with the liquid crystal piece through the conductive adhesive; put the 3V battery into the battery holder, and then insert the battery holder into the cover shell to connect the positive and negative poles on the PCB board. At this time, the moving grating is completed; install the installed moving grating on the handle group with screws to complete the assembly of this depth ruler; the displacement between the moving grating PCB board installed on the ruler blank and the fixed grating bar on the fixed grating of this digital display depth measuring ruler generates a voltage signal, which is processed by the MCU to generate a digital signal and then transmitted to the liquid crystal piece through the conductive adhesive to display the measurement data.

[0004] However, the above digital display depth measuring ruler still has the following problems: the above digital display depth measuring ruler has a metal shell, which is heavy and has a poor hand-held feeling. In addition, after each measurement, it is necessary to stand at a specific angle, or continuously press and hold the hold key after measurement to take out the measuring ruler to read the data, resulting in inconvenient reading. Content of the Utility Model

[0005] The utility model provides a digital display depth measuring ruler, which solves the problems of excessive weight of hand-held products and inflexible reading methods in the prior art.

[0006] The technical solution of the utility model is as follows: a digital display depth gauge, which includes a plastic handle housing and a thimble assembly installed on one side of the plastic handle housing. The plastic handle housing includes a lower handle housing and an upper handle housing that is snap-fitted with the lower handle housing up and down. One end of the upper handle housing close to the thimble assembly is provided with a circular hole, and an aluminum alloy body is filled in the circular hole. An elastic hanging piece is arranged inside the aluminum alloy body to cause the thimble assembly to reset when the thimble assembly is pressed. Above the elastic hanging piece, a fixed grating induction plate fixed inside the aluminum alloy body is provided. Above the fixed grating induction plate, a rotating lower ring fixed inside the aluminum alloy body is provided. Inside the upper part of the rotating lower ring, a rotating upper ring capable of rotating relative to the rotating lower ring is provided. A moving grating assembly is fixed on the rotating upper ring.

[0007] Preferably, the thimble assembly includes a replaceable thimble. One end of the replaceable thimble is inserted with a push rod. A sleeve is sleeved outside the push rod. One end of the sleeve is sleeved with an auxiliary measuring seat for fixing the replaceable thimble. The other end of the sleeve is threadedly connected with a table positioning sleeve that abuts against the aluminum alloy body.

[0008] Preferably, the elastic hanging piece includes an aluminum alloy fixed grating seat sleeved outside the thimble assembly, a plastic guide block for guiding the sliding of the aluminum alloy fixed grating seat, and a spring hook for elastically resetting the thimble assembly through the aluminum alloy fixed grating seat.

[0009] Preferably, the plastic guide block is fixed to one side of the bottom of the circular hole by a screw. A strip-shaped limiting groove is formed on the side surface of the plastic guide block.

[0010] Preferably, a bayonet perpendicular to the direction of the strip-shaped limiting groove is formed on the aluminum alloy fixed grating seat. A positioning steel needle limited in the strip-shaped limiting groove is installed in the bayonet. A spring piece is fixed on the top surface of the aluminum alloy fixed grating seat. A fixed grating piece is welded on the spring piece.

[0011] Preferably, the spring hook is positioned at the bottom of the circular hole by a screw. The spring hook can rotate around the screw. One end of the spring hook abuts against the positioning steel needle. The other end of the spring hook is elastically connected to the aluminum alloy body through a return spring.

[0012] Preferably, the moving grating assembly includes a housing. A PCB board is sleeved inside the bottom of the housing. A tact switch, a 10P wire row socket, positive and negative electrodes, a capacitor, and a processing chip are soldered on the PCB board. Above the PCB board, there is a liquid crystal screen loaded in the housing. On one side of the liquid crystal screen, there is a conductive adhesive electrically connected to the PCB board. On one side of the conductive adhesive, there is a backlight board attached to the bottom surface of the liquid crystal screen. A battery holder is plugged into one side of the housing. A button battery is loaded in the battery holder. At the bottom of the battery holder, there are positive and negative electrodes electrically connected to the positive and negative electrodes. A pressing block for positioning the liquid crystal screen is plugged into the other side of the housing. A key hole is formed in the housing, and a button that presses against the tact switch is placed in the key hole.

[0013] Preferably, a groove is provided on the housing, and a glass sheet is bonded in the groove.

[0014] Preferably, a 10P wire row socket corresponding to the 10P wire row socket is provided on the upper surface of the fixed grating induction plate.

[0015] The beneficial effects of the present invention are as follows:

[0016] On the basis of the original depth gauge, the present invention modifies the structural form, adopts the method of adding an aluminum alloy body with a plastic handle shell that is clamped up and down, optimizes the handheld structure, reduces the weight of the overall structure, and adds a rotatable structural form to the moving grating assembly, enabling the moving grating dial to rotate within a certain angle, thereby optimizing the visual reading and solving the problems of excessive weight of handheld products and inflexible reading methods in the prior art. Description of the Drawings

[0017] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0018] Figure 1 It is a schematic structural diagram of the digital display depth gauge proposed by the present invention;

[0019] Figure 2 It is an exploded structural diagram of the digital display depth gauge proposed by the present invention;

[0020] Figure 3 It is an exploded structural diagram of the ejector rod assembly proposed by the present invention;

[0021] Figure 4 It is a schematic structural diagram of the elastic hanging part proposed by the present invention;

[0022] Figure 5 It is an exploded structural diagram of the moving grating assembly proposed by the present invention;

[0023] In the figure: 1. Plastic handle housing; 11. Lower handle housing; 12. Upper handle housing; 2. Aluminum alloy body; 3. Thumb rod assembly; 31. Replaceable thimble; 32. Thumb rod; 33. Sleeve; 34. Auxiliary measuring seat; 35. Gauge positioning sleeve; 4. Moving grating assembly; 41. Cover; 42. PCB board; 43. Battery holder; 44. Button battery; 45. Pressing block; 46. LCD screen; 47. Conductive adhesive; 48. Glass sheet; 49. Tactile switch; 410. 10P wire row socket; 411. Backlight sheet; 412. Positive and negative plates; 413. Capacitor; 414. Processing chip; 415. Button; 5. Fixed grating induction plate; 51. 10P wire row seat; 6. Rotating lower ring; 7. Rotating upper ring; 8. Elastic hanging part; 81. Plastic guide block; 82. Aluminum alloy fixed grating seat; 83. Fixed grating sheet; 84. Positioning steel needle; 85. Spring hook; 86. Return spring; 87. Elastic sheet. Detailed implementation manners

[0024] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0025] Please refer to Figure 1 And Figure 2 The present utility model provides a technical solution: a digital display depth gauge, including a plastic handle housing 1 and a thumb rod assembly 3 installed on one side of the plastic handle housing 1. The plastic handle housing 1 includes a lower handle housing 11 and an upper handle housing 12 that is snap-fitted with the lower handle housing 11 up and down. One end of the upper handle housing 12 close to the thumb rod assembly 3 is provided with a circular hole, and an aluminum alloy body 2 is filled in the circular hole. An elastic hanging part 8 for urging the thumb rod assembly 3 to reset when the thumb rod assembly 3 is pressed is arranged inside the aluminum alloy body 2. Above the elastic hanging part 8, a fixed grating induction plate 5 fixed inside the aluminum alloy body 2 is provided. Above the fixed grating induction plate 5, a rotating lower ring 6 fixed inside the aluminum alloy body 2 is provided. Inside the upper part of the rotating lower ring 6, a rotating upper ring 7 that can rotate relative to the rotating lower ring 6 is provided. A moving grating assembly 4 is fixed on the rotating upper ring 7.

[0026] Please refer to Figure 2 And Figure 3, the ejector rod assembly 3 includes a replaceable ejector pin 31. One end of the replaceable ejector pin 31 is inserted with a push rod 32. The outside of the push rod 32 is sleeved with a sleeve 33. One end of the sleeve 33 is sleeved with an auxiliary measuring seat 34 for fixing the replaceable ejector pin 31. The other end of the sleeve 33 is threadedly connected with a watch positioning sleeve 35 that abuts against the aluminum alloy watch body 2. When installing the ejector rod assembly 3, first press the watch positioning sleeve 35 into the aluminum alloy watch body 2 from inside to outside, then install the replaceable ejector pin 31 at one end of the push rod 32, and insert the replaceable ejector pin 31 and the push rod 32 into one end of the sleeve 33 to form an assembly and screw it into the aluminum alloy watch body 2. Then weld the fixed grating piece 83 on the elastic piece 87 and install it on the aluminum alloy fixed grating seat 82. Then put the aluminum alloy fixed grating seat 82 on the push rod 32, and install the auxiliary measuring seat 34. Then fix the plastic guide block 81 on one side inside the aluminum alloy watch body 2 with screws.

[0027] Please refer to Figure 4 and Figure 5 , the elastic hanging part 8 includes an aluminum alloy fixed grating seat 82 sleeved outside the ejector rod assembly 3, a plastic guide block 81 for sliding and guiding the aluminum alloy fixed grating seat 82, and a spring hook 85 for elastically resetting the ejector rod assembly 3 through the aluminum alloy fixed grating seat 82. The plastic guide block 81 is fixed on one side of the bottom of the circular hole with screws. A strip-shaped limiting groove is opened on the side of the plastic guide block 81. A bayonet perpendicular to the direction of the strip-shaped limiting groove is opened on the aluminum alloy fixed grating seat 82. A positioning steel pin 84 limited in the strip-shaped limiting groove is installed in the bayonet. A elastic piece 87 is fixed on the top surface of the aluminum alloy fixed grating seat 82. A fixed grating piece 83 is welded on the elastic piece 87. The spring hook 85 is positioned at the bottom of the circular hole with screws. The spring hook 85 can rotate around the screw as the center. One end of the spring hook 85 abuts against the positioning steel pin 84. The other end of the spring hook 85 is elastically connected to the aluminum alloy watch body 2 through a return spring 86. When installing the elastic hanging part 8, first install the spring hook 85 on the advancing path of the aluminum alloy fixed grating seat 82 with screws, insert the positioning steel pin 84 into the bayonet of the aluminum alloy fixed grating seat 82, and then hook the two ends of the return spring 86 on the hanging rod of the spring hook 85 and the aluminum alloy watch body 2 respectively. At this time, the installation of the ejector rod assembly 3 and the aluminum alloy watch body 2 is completed, and the mechanical action that the return spring 86 will automatically pull back after the replaceable ejector pin 31 is pushed and released can be realized.

[0028] Please refer to Figure 5, the moving grating assembly 4 includes a housing 41. Inside the bottom of the housing 41, a PCB board 42 is sleeved. On the PCB board 42, a tactile switch 49, a 10P wire row socket 410, positive and negative plates 412, a capacitor 413, and a processing chip 414 are soldered. Above the PCB board 42, a liquid crystal screen 46 filled in the housing 41 is provided. On one side of the liquid crystal screen 46, a conductive adhesive 47 electrically connected to the PCB board 42 is provided. On one side of the conductive adhesive 47, a backlight board attached to the bottom surface of the liquid crystal screen 46 is provided. On one side of the housing 41, a battery holder 43 is inserted. Inside the battery holder 43, a button battery 44 is filled. At the bottom of the battery holder 43, positive and negative electrodes electrically connected to the positive and negative plates 412 are provided. On the other side of the housing 41, a pressing block 45 for positioning the liquid crystal screen 46 is inserted. On the housing 41, key holes are provided, and a button 415 that presses against the tactile switch 49 is placed in the key holes. On the housing 41, a groove is provided, and a glass sheet 48 is adhered in the groove. On the upper surface of the fixed grating induction plate 5, a 10P wire row socket 51 corresponding to the 10P wire row socket 410 is provided. The assembly method of the moving grating assembly 4 is as follows: First, solder the tactile switch 49, the positive and negative plates 412, the capacitor 413, the processing chip 414, and the 10P wire row socket 410 on the PCB board 42. Place the liquid crystal screen 46, the button 415, the backlight sheet 411, and the pressing block 45 into the housing 41 from the back. Insert the conductive adhesive 47 into the housing 41 from the inside and connect it in contact with the liquid crystal screen 46. Then, install the soldered PCB board 42 inside the housing 41 with screws. At this time, the PCB board 42 can transmit data by connecting the liquid crystal screen 46 through the conductive adhesive 47. Next, adhesively bond the front side of the glass sheet 48 with double-sided tape to the housing 41. Place the button battery 44 into the battery holder 43, and then insert the battery holder 43 into the housing 41 so that the positive and negative plates 412 on the PCB board 42 are connected to the positive and negative electrodes at the bottom of the battery holder 43. At this time, the assembly of the moving grating assembly 4 is completed. Finally, sleeved the rotating lower ring 6 and the rotating upper ring 7, and then install the assembled moving grating assembly 4 on the rotating upper ring 7 with screws. Place the assembled moving grating assembly 4 at the bottom on the fixed grating induction plate 5 and install it in the aluminum alloy body 2 and fix it with screws. Then, install the whole into the handle lower housing 11, and install the handle upper housing 12 on the handle lower housing 11 and tighten it with screws, thus completing the assembly of the digital display depth gauge.

[0029] The working principle of the present utility model is that a voltage signal is generated by the parallel displacement between the moving grating PCB board 42 installed in the aluminum alloy body 2 and the fixed grating induction plate 5. After MCU data processing, a digital signal is generated and then transmitted to the liquid crystal screen 46 through the conductive adhesive 47 to display the measurement data.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. Digital display depth gauge, comprising a plastic handle housing (1) and a push rod assembly (3) installed on one side of the plastic handle housing (1), characterized in that, The plastic handle housing (1) includes a lower handle housing (11) and an upper handle housing (12) that is snap-fitted to the lower handle housing (11) vertically. One end of the upper handle housing (12) near the ejector rod assembly (3) is provided with a circular hole, and an aluminum alloy body (2) is filled in the circular hole. An elastic hanging part (8) is arranged in the aluminum alloy body (2) to cause the ejector rod assembly (3) to reset when the ejector rod assembly (3) is pressed. Above the elastic hanging part (8), a fixed grid induction plate (5) fixed in the aluminum alloy body (2) is provided. Above the fixed grid induction plate (5), a rotating lower ring (6) fixed in the aluminum alloy body (2) is provided. Inside the upper part of the rotating lower ring (6), a rotating upper ring (7) that can rotate relative to the rotating lower ring (6) is provided. A moving grid assembly (4) is fixed on the rotating upper ring (7).

2. The digital depth gauge according to claim 1, characterized in that, The ejector rod assembly (3) includes a replaceable ejector pin (31). One end of the replaceable ejector pin (31) is inserted with a push rod (32). A sleeve (33) is sleeved outside the push rod (32). One end of the sleeve (33) is sleeved with an auxiliary measuring seat (34) for fixing the replaceable ejector pin (31). The other end of the sleeve (33) is threadedly connected with a table positioning sleeve (35) that abuts against the aluminum alloy body (2).

3. The digital display depth gauge according to claim 1, characterized in that, The elastic hanging part (8) includes an aluminum alloy fixed grid seat (82) sleeved outside the ejector rod assembly (3), a plastic guide block (81) for guiding the sliding of the aluminum alloy fixed grid seat (82), and a spring hook (85) for elastically resetting the ejector rod assembly (3) through the aluminum alloy fixed grid seat (82).

4. The digital depth gauge according to claim 3, characterized in that, The plastic guide block (81) is fixed to one side of the bottom of the circular hole by screws. A strip-shaped limiting groove is formed on the side surface of the plastic guide block (81).

5. The digital display depth gauge according to claim 4, characterized in that, A bayonet perpendicular to the direction of the strip-shaped limiting groove is formed on the aluminum alloy fixed grid seat (82). A positioning steel pin (84) limited in the strip-shaped limiting groove is installed in the bayonet. A spring piece (87) is fixed on the top surface of the aluminum alloy fixed grid seat (82). A fixed grid piece (83) is welded on the spring piece (87).

6. The digital display depth gauge according to claim 5, characterized in that, The spring hook (85) is positioned at the bottom of the circular hole by screws. The spring hook (85) can rotate around the screws. One end of the spring hook (85) abuts against the positioning steel pin (84). The other end of the spring hook (85) is elastically connected to the aluminum alloy body (2) through a return spring (86).

7. The digital depth gauge according to claim 1, wherein The moving grating assembly (4) includes a housing (41). A PCB board (42) is sleeved inside the bottom of the housing (41). A tactile switch (49), a 10P wire row socket (410), positive and negative plates (412), a capacitor (413), and a processing chip (414) are soldered on the PCB board (42). Above the PCB board (42), there is a liquid crystal screen (46) loaded inside the housing (41). On one side of the liquid crystal screen (46), there is a conductive adhesive (47) electrically connected to the PCB board (42). On one side of the conductive adhesive (47), there is a backlight board attached to the bottom surface of the liquid crystal screen (46). A battery holder (43) is plugged into one side of the housing (41). A button cell (44) is loaded inside the battery holder (43). At the bottom of the battery holder (43), there are positive and negative electrodes electrically connected to the positive and negative plates (412). A pressing block (45) for positioning the liquid crystal screen (46) is plugged into the other side of the housing (41). The housing (41) is provided with key holes, and buttons (415) that press against the tactile switch (49) are inserted into the key holes.

8. The digital display depth gauge according to claim 7, characterized in that, The housing (41) is provided with a groove, and a glass sheet (48) is bonded inside the groove.

9. The digital depth gauge according to claim 7, characterized in that, On the upper surface of the fixed grating induction plate (5), there is a 10P wire row socket (51) corresponding to the 10P wire row socket (410).

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