Digital caliper

Abstract

The utility model discloses a digital caliper which comprises a caliper body, the bottom of one end of the caliper body is fixedly connected with a fixed measuring jaw, the caliper body is slidably connected with a digital display, the bottom of the digital display is fixedly connected with a movable measuring jaw, and the fixed measuring jaw and the movable measuring jaw are slidably connected with extended measuring jaws through sliding mechanisms. The sliding mechanism comprises racks arranged on the inner walls of the fixed measuring jaw and the movable measuring jaw in the vertical direction, a movable part and a button, tooth blocks are arranged on the faces, facing the inner walls of the fixed measuring jaw and the movable measuring jaw, of the movable part, movable grooves are further formed in the side surfaces of the fixed measuring jaw and the movable measuring jaw, and a through hole corresponding to the button is formed in the side face of the extended measuring jaw. The button passes through the movable groove and the through hole and extends out of the extended measuring jaw. A reset spring is arranged in the movable part. The length of the digital caliper can be adjusted in real time without dismounting and mounting, and the measuring jaw can be adjusted to a desired length, so that the digital caliper is convenient to measure objects with different heights at two ends, the measuring precision is improved, and the operation is simple, convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, and in particular to a digital caliper. Background Technology

[0002] A digital caliper features a high-precision rack on its body. The rack's rotation drives the circular grid plates to rotate. Using the principle of photoelectric pulse counting, the displacement of the caliper's jaws is converted into pulse signals. These signals are then displayed digitally on the screen via a counter and monitor. It is a measuring tool for measuring lengths and inner / outer diameters. Digital calipers are characterized by intuitive readings, ease of use, and versatility.

[0003] The existing digital calipers have fixed jaw lengths. When using a digital caliper to measure objects of different shapes or irregularities, the jaws of the caliper may have difficulty reaching the object because the part to be measured is sometimes deep or the two ends of the part to be measured are at different heights. It is also difficult to keep the measurement level. It is necessary to replace the caliper with one with a longer jaw, and the length of the replacement jaw is also fixed and cannot be adjusted according to actual needs. The replacement process is cumbersome and time-consuming, which affects the measurement efficiency and accuracy. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a digital caliper to solve the above problems.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A digital caliper includes a caliper body. A fixed measuring jaw is fixedly connected to the bottom of one end of the caliper body. A digital display is slidably connected to the caliper body. A movable measuring jaw is fixedly connected to the bottom of the digital display. An extension measuring jaw is slidably connected to both the fixed and movable measuring jaws via a sliding mechanism. The fixed and movable measuring jaws are hollow. The sliding mechanism includes a rack arranged vertically on the inner walls of the fixed and movable measuring jaws, a movable part, and a button fixedly connected to the movable part. The movable part has a toothed block that engages with the rack on the side facing the inner walls of the fixed and movable measuring jaws. The side surfaces of the fixed and movable measuring jaws also have movable grooves arranged vertically. The rack is located on both sides of the movable grooves. The extension measuring jaw is sleeved on the outer surface of the fixed and movable measuring jaws, and a through hole corresponding to the button is provided on the side of the extension measuring jaw. The button extends out of the extension measuring jaw through the movable groove and the through hole. A return spring is provided inside the movable part.

[0007] In the above-mentioned utility model, the racks are symmetrically arranged on both sides of the inner walls of the fixed measuring jaw and the movable measuring jaw, and the movable grooves are also symmetrically arranged on both sides of the fixed measuring jaw and the movable measuring jaw. The movable part includes a movable block one and a movable block two. The racks are respectively arranged on the side of the movable block one and the movable block two facing the inner walls of the fixed measuring jaw and the movable measuring jaw, and the reset spring is connected between the movable block one and the movable block two. Under the rebound force of the reset spring, the movable block one and the movable block two are respectively engaged with the racks on both sides.

[0008] Furthermore, in the above-mentioned utility model, the upper and lower ends of the first movable block are provided with extended balance blocks, and the second movable block is partially embedded between the two balance blocks.

[0009] In the above-mentioned utility model, the cross-section of the extended measuring jaw is U-shaped, and the extended measuring jaw is movably sleeved on the side facing the fixed measuring jaw and the movable measuring jaw.

[0010] Furthermore, in the above-mentioned utility model, the bottom of the fixed measuring jaw and the movable measuring jaw are provided with guide posts, and the two sides of the extended measuring jaw are provided with guide grooves arranged in the vertical direction. When the extended measuring jaw is sleeved on the fixed measuring jaw and the movable measuring jaw, the guide posts are placed in the guide grooves.

[0011] Furthermore, in the above-mentioned utility model, the bottoms of the fixed measuring jaw, the movable measuring jaw, and the extended measuring jaw all adopt a chamfered structure.

[0012] The beneficial effects of this utility model are:

[0013] The extended measuring jaw in this invention is slidably connected to the movable and fixed measuring jaws, allowing for instant adjustment of the digital caliper length without disassembly or installation, thus improving measurement efficiency. Furthermore, the sliding mechanism in this design allows the measuring jaws to be adjusted to the desired length and fixed according to the specific shape of the object being measured. The fixed and movable measuring jaws can be set to different lengths, making it easier to measure objects with inconsistent heights at both ends and improving measurement accuracy. Secondly, this design only requires pressing and sliding the buttons on both sides; releasing the buttons allows the jaws to be locked through the engagement of the rack and pinion, making operation simple, convenient, and quick. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled extension jaw of this utility model;

[0016] Figure 3 This is a diagram showing the usage state of the extended measuring jaw of this utility model;

[0017] Figure 4This is a side sectional view of the extended measuring jaw and the fixed measuring jaw of this utility model;

[0018] Figure 5 This is an enlarged view of A of this utility model;

[0019] Figure 6 This is a diagram showing the usage state of the sliding mechanism in utility model A.

[0020] In the diagram, 1-caliper body, 2-digital display, 3-fixed measuring jaw, 4-moving measuring jaw, 5-extended measuring jaw, 6-sliding mechanism, 61-rack, 62-moving part, 621-moving block one, 622-moving block two, 63-button, 64-tooth block, 65-moving groove, 66-through hole, 67-reset spring, 68-balance block, 7-guide post, 8-guide groove. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0022] Example:

[0023] Please see the appendix Figure 1-3 As shown, a digital caliper includes a caliper body 1. A fixed measuring jaw 3 is fixedly connected to the bottom of one end of the caliper body 1. A digital display 2 is slidably connected to the caliper body 1. A movable measuring jaw 4 is fixedly connected to the bottom of the digital display 2. Moving the digital display 2 causes the movable measuring jaw 4 to move together, so that the movable measuring jaw 4 and the fixed measuring jaw 3 are engaged at both ends of the object to be measured for measuring the length or outer diameter of the object. The number displayed on the digital display 2 is the length or outer diameter of the object to be measured.

[0024] Both the fixed measuring jaw 3 and the movable measuring jaw 4 are slidably connected to an extended measuring jaw 5 via a sliding mechanism 6. The fixed measuring jaw 3 and the movable measuring jaw 4 are hollow, and the sliding mechanism 6 is disposed inside the fixed measuring jaw 3 and the movable measuring jaw 4. The sliding mechanism 6 includes a rack 61 arranged vertically on the inner wall of the fixed measuring jaw 3 and the movable measuring jaw 4, a movable part 62, and a button 63 fixedly connected to the movable part 62, as shown in the attached figure. Figure 4 and 5 As shown, the movable part 62 has a toothed block 64 that engages with the rack 61 on the side facing the inner wall of the fixed measuring jaw 3 and the movable measuring jaw 4. The side surfaces of the fixed measuring jaw 3 and the movable measuring jaw 4 are also provided with movable grooves 65 arranged in the vertical direction, as shown in the attached figure. Figure 2 As shown, rack 61 is located on both sides of the movable groove 65. The extended measuring jaw 5 is sleeved on the outer surface of the fixed measuring jaw 3 and the movable measuring jaw 4, so that during each measurement, regardless of whether the extended measuring jaw 5 is slid or not, the side of the extended measuring jaw 5 is used as the measurement reference, which improves the measurement accuracy. The side of the extended measuring jaw 5 is provided with a through hole 66 corresponding to the button 63. The button 63 extends to the outside of the extended measuring jaw 5 through the movable groove 65 and the through hole 66. The movable part 62 is provided with a return spring 67. The return spring 67 resets the movable part 62 and the button 63. The tester only needs to press the button 63 to make the extended measuring jaw 5 slide up and down to increase the overall length of the measuring jaw.

[0025] As attached Figure 5 As shown, the racks 61 are symmetrically arranged on both sides of the inner walls of the fixed measuring jaw 3 and the movable measuring jaw 4. The movable grooves 65 are also symmetrically arranged on both sides of the fixed measuring jaw 3 and the movable measuring jaw 4. The movable part 62 includes a first movable block 621 and a second movable block 622. The toothed blocks 64 are respectively arranged on the side of the first movable block 621 and the second movable block 622 facing the inner walls of the fixed measuring jaw 3 and the movable measuring jaw 4. The return spring 67 is connected between the first movable block 621 and the second movable block 622. Under the rebound force of the return spring 67, the first movable block 621 and the second movable block 622 are engaged with the racks 61 on both sides. That is, by pressing the springs on both sides at the same time, the first movable block 621 and the second movable block 622 move towards each other, so that the toothed blocks 64 are separated from the racks 61. At this time, as shown in the attached figure... Figure 6 As shown, continue pressing button 63 to move movable block 1 621 and movable block 2 622 downwards, which in turn moves the extended measuring claw 5 downwards; by providing movable grooves 65 and their corresponding movable blocks 1 621 and 2 622 on both sides of the fixed measuring claw 3 and the movable measuring claw 4, the stability and flexibility of the extended measuring claw 5 during the up and down sliding process are ensured.

[0026] In the above embodiment, preferably, the upper and lower ends of the first movable block 621 are further provided with extended balance blocks 68, and the second movable block 622 is partially embedded between the two balance blocks 68, so that when the buttons 63 on both sides are pressed, the second movable block 622 can only move horizontally along the balance blocks 68, reducing the instability caused by the return spring 67 during compression, and ensuring that the force acting on the first movable block 621 and the second movable block 622 when the tester presses the button 63 remains horizontal, further improving the stability of the working process.

[0027] As attached Figure 3 and 4 As shown, the cross-section of the extended measuring jaw 5 is U-shaped, and the extended measuring jaw 5 is movably sleeved on the opposite side of the fixed measuring jaw 3 and the movable measuring jaw 4, so that the opposite side of the two extended measuring jaws 5 is used as the measurement reference for each measurement.

[0028] In the above embodiments, preferably, to improve the measurement accuracy and stability of the extended measuring jaw 5 during the up-and-down sliding process, a guide post 7 is also provided at the bottom of the fixed measuring jaw 3 and the movable measuring jaw 4. The two sides of the extended measuring jaw 5 are provided with guide grooves 8 arranged in the vertical direction. When the extended measuring jaw 5 is sleeved on the fixed measuring jaw 3 and the movable measuring jaw 4, the guide post 7 is placed in the guide groove 8, so that the extended measuring jaw 5 can only move up and down along the direction of the guide groove 8. After being fixed, the extended measuring jaw 5 is doubly positioned by the button 63 and the guide post to avoid the extended measuring jaw 5 shaking during the measurement process and thus affecting the measurement accuracy.

[0029] The bottoms of the fixed measuring jaw 3, the movable measuring jaw 4, and the extended measuring jaw 5 are all chamfered to prevent operators from getting scratched during use.

[0030] Detailed operation process:

[0031] When measuring the outer diameter of an irregular object, the tester simultaneously presses buttons 63 on both sides of one of the extended measuring jaws 5. Buttons 63 cause movable blocks 621 and 622 to move towards each other and compress the return spring 67, causing the toothed blocks 64 on movable blocks 621 and 622 to move away from the racks 61 on both sides. Then, the tester slides down while pressing button 63, moving the extended measuring jaw 5, movable blocks 621 and 622 downwards along the guide groove 8. When the bottom of the extended measuring jaw 5 reaches the position to be measured, the tester releases button 63, which resets. Movable blocks 621 and 622 move away from each other under the action of the return spring 67 until the toothed blocks 64 on movable blocks 621 and 622 interlock with the racks 61 on both sides. Movable blocks 621 and 622 then stop moving, causing button 63 to stop moving, and the extended measuring jaw 5 also stops moving. At this point, the length adjustment of the entire measuring jaw is complete.

[0032] Depending on the actual situation of the irregular object, the length of the extended measuring jaw 5 on the fixed measuring jaw 3 can be adjusted only, or the lengths of the extended measuring jaw 5 on both the fixed measuring jaw 3 and the movable measuring jaw 4 can be adjusted simultaneously. The lengths of the two extended measuring jaws 5 can also be different as needed.

[0033] This technical solution enables instant adjustment of the length of a digital caliper without disassembly or installation, improving measurement efficiency. Furthermore, the sliding mechanism 6 in this solution allows the measuring jaws to be adjusted to the desired length and fixed according to the specific shape of the object being measured. The lengths of the fixed measuring jaw 3 and the movable measuring jaw 4 can be set differently, making it easier to measure objects with inconsistent heights at both ends, thus improving measurement accuracy. The operation is simple, convenient, and quick.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A digital caliper, comprising a caliper body (1), wherein a fixed measuring jaw (3) is fixedly connected to the bottom of one end of the caliper body (1), and a digital display (2) is slidably connected to the caliper body (1), wherein a movable measuring jaw (4) is fixedly connected to the bottom of the digital display (2), characterized in that, Both the fixed measuring jaw (3) and the movable measuring jaw (4) are slidably connected to an extended measuring jaw (5) via a sliding mechanism (6). The fixed measuring jaw (3) and the movable measuring jaw (4) are hollow. The sliding mechanism (6) includes a rack (61) arranged vertically on the inner wall of the fixed measuring jaw (3) and the movable measuring jaw (4), a movable part (62), and a button (63) fixedly connected to the movable part (62). The movable part (62) has a toothed block that engages with the rack (61) on the side facing the inner wall of the fixed measuring jaw (3) and the movable measuring jaw (4). (64) The side surfaces of the fixed measuring jaw (3) and the movable measuring jaw (4) are also provided with movable grooves (65) arranged in the vertical direction. The rack (61) is located on both sides of the movable groove (65). The extended measuring jaw (5) is sleeved on the outer surface of the fixed measuring jaw (3) and the movable measuring jaw (4). The side of the extended measuring jaw (5) is provided with a through hole (66) corresponding to the button (63). The button (63) extends through the movable groove (65) and the through hole (66) to the outside of the extended measuring jaw (5). The movable part (62) is provided with a return spring (67).

2. A digital caliper according to claim 1, characterized in that, The racks (61) are symmetrically arranged on both sides of the inner wall of the fixed measuring jaw (3) and the movable measuring jaw (4). The movable grooves (65) are also symmetrically arranged on both sides of the fixed measuring jaw (3) and the movable measuring jaw (4). The movable part (62) includes a movable block one (621) and a movable block two (622). The racks (64) are respectively arranged on the side of the movable block one (621) and the movable block two (622) facing the inner wall of the fixed measuring jaw (3) and the movable measuring jaw (4). The reset spring (67) is connected between the movable block one (621) and the movable block two (622). Under the rebound force of the reset spring (67), the movable block one (621) and the movable block two (622) are respectively engaged with the racks (61) on both sides.

3. A digital caliper according to claim 2, characterized in that, The upper and lower ends of the first movable block (621) are also provided with extended balance blocks (68), and the second movable block (622) is partially embedded between the two balance blocks (68).

4. A digital caliper according to claim 2, characterized in that, The extended measuring jaw (5) has a U-shaped cross section, and the extended measuring jaw (5) is movably sleeved on the fixed measuring jaw (3) and the movable measuring jaw (4) and the opposite side.

5. A digital caliper according to claim 1, characterized in that, The bottom of the fixed measuring jaw (3) and the movable measuring jaw (4) are also provided with guide posts (7), and the two sides of the extended measuring jaw (5) are provided with guide grooves (8) arranged in the vertical direction. When the extended measuring jaw (5) is sleeved on the fixed measuring jaw (3) and the movable measuring jaw (4), the guide posts (7) are placed in the guide grooves (8).

6. A digital caliper according to claim 1, characterized in that, The bottoms of the fixed measuring jaw (3), the movable measuring jaw (4), and the extended measuring jaw (5) all adopt a chamfered structure.

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