Telescopic depth vernier caliper

Abstract

The utility model belongs to the technical field of measuring tools, and particularly relates to a telescopic depth vernier caliper, which comprises a caliper frame, a main caliper and a telescopic caliper, the main caliper is slidably arranged in the caliper frame, a set screw for fixing the main caliper is arranged on the caliper frame, a vernier is arranged on the caliper frame, and the telescopic caliper is slidably arranged on the main caliper. The extension scale at least comprises a section of extension scale body, the extension scale bodies are sequentially connected in a sliding mode, a positioning assembly is arranged between the extension scale bodies, an end cover is arranged at one end of the main scale, and an ejection assembly is arranged between the end cover and the extension scale. The extension scale is slidably arranged on the main scale, the extension scale bodies are sequentially and slidably connected, the extension scale bodies can be fixed through the positioning assembly during measurement, the extension scale bodies are ejected out through the ejection assembly, the extension scale bodies can be conveniently pulled out for use, the extension scale bodies can extend out to increase the measuring range of the depth vernier caliper, and the extension scale bodies can be stored to the length of the main scale when not in use. And small volume, wide range and convenience in carrying can be realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of measuring tools, and particularly relates to a telescopic depth vernier caliper. BACKGROUND

[0002] The depth vernier caliper is a kind of vernier principle for measuring the relative distance between the measuring surface of the frame and the measuring surface of the ruler, and is used for measuring the depth of a groove or a hole, the height of a ladder of a ladder-shaped workpiece, length and other sizes, and is commonly referred to as a "depth ruler". The common range of the depth vernier caliper in the prior art is 0~100mm, 0~150mm, 0~300mm, 0~500mm, etc., the length of the outer measuring claw of the existing vernier caliper is fixed and cannot be telescopic, and when a part with a slightly larger diameter is measured, the outer size of the vernier caliper needed is relatively large, and it is inconvenient to carry. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the defects of the prior art, and provides a telescopic depth vernier caliper, the ruler body is telescopic, and large range is realized while being convenient to carry.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a telescopic depth vernier caliper, which comprises a frame, a main ruler and a telescopic ruler, the main ruler is slidably arranged in the frame, a fixing screw for fixing the main ruler is arranged on the frame, a vernier is arranged on the frame, the telescopic ruler is slidably arranged on the main ruler, the telescopic ruler comprises at least one telescopic ruler body, the telescopic ruler bodies are slidably connected in sequence, a positioning assembly is arranged between the telescopic ruler bodies, an end cover is arranged at one end of the main ruler, and an ejection assembly is arranged between the end cover and the telescopic ruler.

[0005] Preferably, the main ruler is a hollow cuboid, the telescopic ruler is slidably arranged in the main ruler, the telescopic ruler bodies are also hollow cuboids, the telescopic ruler bodies are slidably arranged in sequence in the previous telescopic ruler body, and the innermost telescopic ruler body can be hollow or solid.

[0006] Preferably, the positioning assembly is a positioning steel ball and a positioning spring, a mounting groove is arranged on the outer side of each telescopic ruler body, the positioning spring is arranged in the mounting groove, the positioning steel ball is arranged on the outer side of the positioning spring, and a steel ball positioning hole for accommodating the positioning steel ball is formed in the inner wall of the main ruler or each telescopic ruler body.

[0007] Preferably, the steel ball positioning hole is in a semispherical shape.

[0008] Preferably, a plurality of sets of positioning steel balls and positioning springs are arranged on the outer wall of each telescopic ruler body, and a plurality of steel ball positioning holes are correspondingly arranged on the inner wall of the main ruler or the telescopic ruler body on the outer side.

[0009] Preferably, the end cover is fixedly installed on one side of the main ruler by a fixing screw.

[0010] Preferably, the ejection assembly comprises an ejection screw and a plurality of shaft clamps arranged at intervals on the ejection screw, the ejection screw is threadedly connected to the end cover, and each shaft clamp is arranged on the side of the end cover close to the main scale.

[0011] Preferably, the telescopic ruler comprises a first telescopic ruler, a second telescopic ruler and a third telescopic ruler arranged in sequence from outside to inside, the first telescopic ruler and the second telescopic ruler are arranged at intervals on the ejection screw, the first telescopic ruler is arranged close to the end cover, the pressure cover is movably arranged between the first telescopic ruler and the second telescopic ruler, one end of the pressure cover is sleeved on the ejection screw, the other end is arranged with an opening, and the edge of the opening is aligned with the first telescopic ruler, the edge of the second telescopic ruler is aligned with the second telescopic ruler, and the end of the ejection screw is aligned with the third telescopic ruler.

[0012] Compared with the prior art, the above technical scheme has the following beneficial effects:

[0013] The utility model discloses a telescopic ruler, which comprises a ruler frame, a main scale and a telescopic ruler, the telescopic ruler is slidably arranged on the main scale, the telescopic ruler comprises at least one telescopic scale body, and the telescopic scale bodies are sequentially and slidably connected. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view when the range of the utility model is 0-200mm.

[0015] Figure 2 It is an enlarged view of A in the middle. Figure 1

[0016] Figure 3 It is an enlarged view of B in the middle. Figure 1

[0017] Figure 4 It is an enlarged view of C in the middle. Figure 1

[0018] Figure 5 It is a structural schematic view when the range of the utility model is 0-400mm.

[0019] Figure 6 It is a structural schematic view when the range of the utility model is 0-600mm.

[0020] Figure 7 It is a structural schematic view when the range of the utility model is 0-800mm.

[0021] ​​​Wherein: 1, ruler frame 2, cursor 3, set screw 4, main ruler 5, the first telescopic ruler 6, the second telescopic ruler 7, the third telescopic ruler 8, positioning ball 9, positioning spring 10, gland 11, fixed screw 12, ejector pin 13, end cap 14, first shaft card 15, ball positioning hole 16, second shaft card. DETAILED DESCRIPTION

[0022] Figures 1-7 It is the best embodiment of the utility model, the following will be combined with the attached Figures 1-7 Further illustrate the utility model.

[0023] As Figure 1 The utility model discloses a telescopic depth vernier caliper, including ruler frame 1, main ruler 4 and telescopic ruler, main ruler 4 is arranged in the ruler frame 1 slidingly, is provided with the set screw 3 of fixed main ruler 4 on the ruler frame 1, and the set screw 3 is connected in screw thread on the ruler frame 1, and the set screw 3 is on main ruler 1, and then the ruler frame 1 is fixed, is provided with cursor 2 on the ruler frame 1, and the telescopic ruler is arranged on main ruler 4 slidingly, and the telescopic ruler includes at least a telescopic ruler body, and each telescopic ruler body is connected in sequence slidingly, and is provided with positioning assembly between each telescopic ruler body, and is provided with end cap 13 on the one end of main ruler, and end cap 13 is fixedly installed on the one side of main ruler 4 through fixed screw 11, and is provided with ejector assembly between end cap 13 and telescopic ruler, and the telescopic ruler body can be fixed through positioning assembly when measuring, and the telescopic ruler body is ejected by ejector assembly, and it is convenient to pull out the telescopic ruler body and use, and the range of depth vernier caliper can be increased after the telescopic ruler body can be extended, and the telescopic ruler body can be stored to the length of main ruler 4 when not being used.

[0024] In the embodiment, the telescopic ruler includes first telescopic ruler 5, second telescopic ruler 6 and third telescopic ruler 7 arranged in sequence from outside to inside, the first telescopic ruler 5 is connected in sequence slidingly on main ruler 1, the second telescopic ruler 6 is arranged in sequence slidingly on the first telescopic ruler 5, and the third telescopic ruler 7 is arranged in sequence slidingly on the second telescopic ruler 6.The main ruler 4 in the embodiment is hollowly arranged in the cuboid shape, the first telescopic ruler 5 is arranged in sequence slidingly in the main ruler 1, the first telescopic ruler 5 and the second telescopic ruler 6 are also hollowly arranged in the cuboid shape, the second telescopic ruler 6 is arranged in sequence slidingly in the first telescopic ruler 5, and the telescopic ruler body on the innermost side, i.e., the third telescopic ruler 7, can be hollowly or solidly arranged, the third telescopic ruler 7 in the embodiment is solidly arranged, and the third telescopic ruler 7 is arranged in sequence slidingly in the second telescopic ruler 6.

[0025] As Figures 2-3As shown, the positioning assembly is the positioning steel ball 8 and the positioning spring 9, and a mounting groove is arranged outside each telescopic ruler body, the positioning spring 9 is arranged in the mounting groove, the positioning steel ball 8 is arranged outside the positioning spring 9, and a steel ball positioning hole 15 for accommodating the positioning steel ball 8 is formed in the inner wall of the main ruler 4 or each telescopic ruler body. Specifically, the positioning steel ball 8 and the positioning spring 9 are arranged on the outer wall of the first telescopic ruler 5, the second telescopic ruler 6 and the third telescopic ruler 7, and the steel ball positioning hole 15 is correspondingly arranged on the inner wall of the main ruler 4, the first telescopic ruler 5 and the second telescopic ruler 6.

[0026] A plurality of sets of the positioning steel ball 8 and the positioning spring 9 are arranged on the outer wall of each telescopic ruler body, and in the embodiment, four sets of the positioning steel ball 8 and the positioning spring 9 are arranged, and four steel ball positioning holes 15 are correspondingly arranged on the inner wall of the main ruler 4 or the telescopic ruler body outside the positioning steel ball 8 and the positioning spring 9. In order to facilitate the retraction of the telescopic ruler, the steel ball positioning hole 15 is arranged in a hemispherical shape, a part of the positioning steel ball 8 is clamped in the steel ball positioning hole 15, and the positioning spring 9 abuts against the positioning steel ball 8. When the telescopic ruler body is retracted, the operator slightly exerts force to push the positioning steel ball 8 out of the steel ball positioning hole 15, and then the telescopic ruler body is retracted.

[0027] As shown in the figure, Figure 4 The ejecting assembly includes an ejecting screw 12 and a plurality of shaft clamps arranged at intervals on the ejecting screw 12, the ejecting screw 12 is threadedly connected to the end cover 13, the shaft clamps are arranged at intervals on one side of the end cover 13 close to the main ruler 4, and each shaft clamp corresponds to one telescopic ruler body.

[0028] Specifically, in the embodiment, the first shaft clamp 14 and the second shaft clamp 16 are arranged at intervals on the ejecting screw 12, the first shaft clamp 14 is arranged close to the end cover 13, the gland 10 is movably arranged between the first shaft clamp 14 and the second shaft clamp 16, one end of the gland 10 is sleeved on the ejecting screw 12, the gland 10 is in clearance fit with the ejecting screw 12, the first shaft clamp 14 can push the gland 10, the other end of the gland 10 is open and the opening end edge is aligned with the first telescopic ruler 5, when the ejecting screw 12 is rotated, the first shaft clamp 14 pushes the gland 10, the other end of the gland 10 pushes the first telescopic ruler 5 and pushes it out, the edge of the second shaft clamp 16 is aligned with the second telescopic ruler 6, when the ejecting screw 12 is rotated, the second shaft clamp 16 pushes out the second telescopic ruler 6, the end of the ejecting screw 12 is aligned with the third telescopic ruler 7, and the third telescopic ruler 7 is pushed out by the ejecting screw 12.

[0029] When the ejecting screw 12 is rotated, the ejecting screw 12 first pushes out the third telescopic ruler 7, the second shaft clamp 16 on the ejecting screw 12 pushes out the second telescopic ruler 6, the first shaft clamp 14 pushes the gland 10 to push out the first telescopic ruler 5, and the lengths of the first telescopic ruler 5, the second telescopic ruler 6 and the third telescopic ruler 7 pushed out are different. After being pushed out of the main ruler 4, the telescopic ruler is pulled out by the operator.

[0030] In this embodiment, the main scale 4 has a measuring range of 0~200mm. The telescopic scale is housed inside the main scale 4. The depth vernier caliper has a measuring range of 0~200mm. Scales of 0~200mm, 200~400mm, 400~600mm, and 600~800mm are respectively set on the four surfaces of the main scale 4. Scales of 0~200mm, 200~400mm, and 400~600mm are respectively set on the three surfaces of the first telescopic scale 5. Scales of 0~200mm and 200~400mm are set on the two surfaces of the second telescopic scale 6. Scales of 0~200mm and 200~400mm are set on one surface of the third telescopic scale 7.

[0031] like Figure 5 As shown, after the ejector screw 12 pushes out the three telescopic scale bodies, the operator pulls out the first telescopic scale 5. The positioning steel ball 8 on the outside of the first telescopic scale 5 is locked in the steel ball positioning hole 15 on the inner wall of the main scale 4 to fix the first telescopic scale 5. At this time, the measuring range of the depth vernier caliper is 0~400mm. When reading the scale, look at the 0~200mm scale of the first telescopic scale 5 and the 200~400mm scale of the main scale 4.

[0032] like Figure 6 As shown, after the ejector screw 12 pushes out the three telescopic rulers, the operator pulls out the first telescopic ruler 5 and the second telescopic ruler 6. The positioning steel ball 8 on the outside of the first telescopic ruler 5 is locked in the steel ball positioning hole 15 on the inner wall of the main ruler 4 to fix the first telescopic ruler 5. The positioning steel ball 8 on the outside of the second telescopic ruler 6 is locked in the steel ball positioning hole 15 on the inner wall of the first telescopic ruler 5 to fix the second telescopic ruler 6. At this time, the measuring range of the depth vernier caliper is 0~600mm. When reading the scale, look at the 0~200mm scale of the second telescopic ruler 6, the 200~400mm scale of the first telescopic ruler 5, and the 400~600mm scale of the main ruler 4.

[0033] like Figure 7 As shown, after the ejector screw 12 pushes out the three telescopic rulers, the operator pulls out the first telescopic ruler 5, the second telescopic ruler 6, and the third telescopic ruler 7. The positioning steel ball 8 on the outside of the first telescopic ruler 5 is locked in the steel ball positioning hole 15 on the inner wall of the main ruler 4, thus fixing the first telescopic ruler 5. The positioning steel ball 8 on the outside of the second telescopic ruler 6 is locked in the steel ball positioning hole 15 on the inner wall of the first telescopic ruler 5, thus fixing the second telescopic ruler 6. The positioning steel ball 8 on the outside of the third telescopic ruler 7 is locked in the steel ball positioning hole 15 on the inner wall of the second telescopic ruler 6, thus fixing the third telescopic ruler 7. At this time, the measuring range of the depth vernier caliper is 0~800mm. When reading the scale, look at the scale of the third telescopic ruler 6, the 200~400mm scale of the second telescopic ruler 5, the 400~600mm scale of the first telescopic ruler 5, and the 600mm~800mm scale of the main ruler 4.

[0034] The utility model discloses a telescopic ruler body can be stored in main ruler 1 when not using, and the length of depth vernier caliper is same with main ruler 1, the utility model discloses when using, the telescopic ruler body is pushed out by ejection assembly, and it is convenient for operator to pull out the telescopic ruler body and use, and operator selects the telescopic ruler body of the extension according to the measurement need, and the locating steel ball 8 on the telescopic ruler body can be fixed in the steel ball fixed hole 15, and the telescopic ruler body can be extended to increase the range of depth vernier caliper, and the utility model discloses can realize small volume, large range, and it is convenient to carry.

[0035] The above is only the preferred embodiment of the utility model, and is not other forms of the limitation of the utility model, and any skilled person in the art can change or modify the equivalent embodiment of equivalent change by the disclosed technical content. But, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model without departing from the technical scheme content of the utility model still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A telescoping depth vernier caliper characterized by: The utility model provides a telescopic ruler, which comprises a ruler frame (1), a main ruler (4) and a telescopic ruler, the main ruler (4) is slidingly arranged in the ruler frame (1), a fixing screw (3) for fixing the main ruler (4) is arranged on the ruler frame (1), a vernier (2) is arranged on the ruler frame (1), the telescopic ruler is slidingly arranged on the main ruler (4), the telescopic ruler comprises at least one telescopic ruler body, the telescopic ruler bodies are sequentially and slidingly connected, a positioning assembly is arranged between the telescopic ruler bodies, an end cover (13) is arranged at one end of the main ruler (4), and an ejection assembly is arranged between the end cover (13) and the telescopic ruler.

2. A telescopic depth vernier caliper according to claim 1, wherein: The main ruler (4) is a hollow cuboid, the telescopic ruler is slidingly arranged in the main ruler, each telescopic ruler body is also a hollow cuboid, and each telescopic ruler body is sequentially and slidingly arranged in a previous telescopic ruler body; the innermost telescopic ruler body can be hollow or solid.

3. A telescopic depth vernier caliper according to claim 1, wherein: The positioning assembly comprises a positioning steel ball (8) and a positioning spring (9), a mounting groove is arranged on the outer side of each telescopic ruler body, the positioning spring (9) is arranged in the mounting groove, the positioning steel ball (8) is arranged on the outer side of the positioning spring (9), and a steel ball positioning hole (15) for accommodating the positioning steel ball (8) is formed in the inner wall of the main ruler (4) or each telescopic ruler body.

4. A telescopic depth vernier caliper according to claim 3, wherein: The steel ball positioning hole (15) is in a semispherical shape.

5. A telescopic depth vernier caliper according to claim 3, wherein: A plurality of sets of the positioning steel ball (8) and the positioning spring (9) are arranged on the outer wall of each telescopic ruler body, and a plurality of steel ball positioning holes (15) are correspondingly arranged on the inner wall of the main ruler (4) or the telescopic ruler body on the outer side.

6. A telescopic depth vernier caliper according to claim 1, wherein: The end cover (13) is fixedly arranged on one side of the main ruler (4) through a fixing screw (11).

7. A telescopic depth vernier caliper according to claim 1, wherein: The ejection assembly comprises an ejection screw (12) and a plurality of shaft clamps which are arranged at intervals on the ejection screw (12), the ejection screw (12) is threadedly connected to the end cover (13), the shaft clamps are arranged on the side of the end cover (13) close to the main ruler (4), and each shaft clamp corresponds to one telescopic ruler body.

8. A telescopic depth vernier caliper according to claim 7, wherein: The telescopic ruler comprises a first telescopic ruler (5), a second telescopic ruler (6) and a third telescopic ruler (7) which are sequentially arranged from outside to inside, the first shaft clamp (14) and the second shaft clamp (16) are arranged at intervals on the ejection screw (12), the first shaft clamp (14) is arranged close to the end cover (13), the pressure cover (10) is movably arranged between the first shaft clamp (14) and the second shaft clamp (16), one end of the pressure cover (10) is sleeved on the ejection screw (12), the other end is arranged in an open mode and the edge of the open end is aligned with the first telescopic ruler (5), the edge of the second shaft clamp (16) is aligned with the second telescopic ruler (6), and the end of the ejection screw (12) is aligned with the third telescopic ruler (7).

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