Vernier caliper

Abstract

The vernier caliper comprises a measuring scale, a fixed clamping foot and a movable clamping foot, the fixed clamping foot is arranged at one end of the measuring scale, the movable clamping foot is arranged on the measuring scale in a sliding mode so that the movable clamping foot can slide relative to the fixed clamping foot, the fixed clamping foot is provided with a first measuring face, and the movable clamping foot is provided with a second measuring face. The first measuring surface and the second measuring surface are oppositely arranged; the first long clamping pin is detachably arranged on the fixed clamping pin, the first long clamping pin is provided with a third measuring surface, and the third measuring surface and the first measuring surface are coplanar; the second long clamping foot is detachably arranged on the movable clamping foot, the second long clamping foot is provided with a fourth measuring face, and the fourth measuring face and the second measuring face are coplanar, so that the large-diameter shaft part measuring device has the advantage of being capable of measuring large-diameter shaft parts.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring instruments, and in particular relates to a vernier caliper. Background Art

[0002] Vernier calipers are commonly used measuring instruments in the field of metrology. When the diameter of a shaft part measured by a vernier caliper is too large, an ordinary vernier caliper cannot clamp the shaft part, and thus cannot measure the diameter of the shaft part with a larger diameter. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a vernier caliper.

[0005] The vernier caliper of the embodiment of the present invention comprises a measuring ruler, a fixed foot and a movable foot, wherein the fixed foot is arranged at one end of the measuring ruler, and the movable foot is slidably arranged on the measuring ruler so that the movable foot can slide relative to the fixed foot, the fixed foot has a first measuring surface, and the movable foot has a second measuring surface, and the first measuring surface and the second measuring surface are arranged opposite to each other;

[0006] a first long clamping foot, wherein the first long clamping foot is detachably arranged on the fixed clamping foot, and the first long clamping foot has a third measuring surface, and the third measuring surface is coplanar with the first measuring surface;

[0007] The second long clamping pin is detachably arranged on the movable clamping pin, and the second long clamping pin has a fourth measuring surface, and the fourth measuring surface is coplanar with the second measuring surface.

[0008] The vernier caliper of the embodiment of the present invention is provided with a detachable first long clamping foot and a second long clamping foot on the fixed clamping foot and the movable clamping foot respectively, and the first long clamping foot and the second long clamping foot respectively extend the length of the fixed clamping foot and the movable clamping foot. Therefore, when it is necessary to measure large-diameter shaft parts, it is only necessary to fix the first long clamping foot and the second long clamping foot on the fixed clamping foot and the movable clamping foot respectively, so as to realize the measurement of large-diameter shaft parts.

[0009] Therefore, the present application has the characteristic of being able to measure large-diameter shaft parts.

[0010] In some embodiments, the fixed foot is provided with a plurality of first through holes at intervals along the vertical direction, the movable foot is provided with a plurality of second through holes at intervals along the vertical direction, the first long foot is provided with a plurality of third through holes at intervals along the vertical direction, and the second long foot is provided with a plurality of fourth through holes at intervals along the vertical direction;

[0011] It also includes a first fastener and a second fastener, wherein the first fastener passes through the first through hole and the third through hole to connect and fix the fixed clamping foot and the first long clamping foot;

[0012] The first fastener passes through the first through hole and the third through hole to connect and fix the fixed clamping foot and the first long clamping foot;

[0013] The second fastener passes through the second through hole and the fourth through hole to connect and fix the movable clamping foot and the second long clamping foot.

[0014] In some embodiments, the first long clamping foot includes a first clamping plate and a second clamping plate spaced apart in the front-to-back direction, the first clamping plate and the second clamping plate are connected via a first side plate, and a space for accommodating the fixed clamping foot is defined between the first clamping plate and the second clamping plate.

[0015] Two opposite surfaces of the fixed clamping foot in the front-to-back direction are both provided with a first guide groove, and the first clamping plate and the second clamping plate are both provided with a first guide rail matched with the first guide groove.

[0016] In some embodiments, the first long clamping foot includes a first clamping plate and a second clamping plate spaced apart in the front-to-back direction, the first clamping plate and the second clamping plate are connected via a first side plate, and a space for accommodating the fixed clamping foot is defined between the first clamping plate and the second clamping plate.

[0017] The two opposite surfaces of the fixed clamping foot in the front-to-back direction are both provided with a first guide rail, and the first clamping plate and the second clamping plate are both provided with a first guide groove matched with the first guide groove.

[0018] In some embodiments, a first limiting assembly is disposed on a side of the first clamping plate away from the fixed clamping foot, the first limiting assembly includes a first limiting spring sheet, one end of the limiting spring sheet is connected to the first clamping plate, the other end of the limiting spring sheet is disposed with a first limiting protrusion, a first limiting through hole is disposed at a position of the first clamping plate corresponding to the first limiting protrusion, the first limiting spring sheet can pass through the first limiting through hole to match the first limiting protrusion with a first limiting groove arranged on the fixed clamping foot;

[0019] There are a plurality of the first limiting grooves, and the plurality of the first limiting grooves are arranged at intervals along the up-down direction.

[0020] In some embodiments, a second limiting assembly is provided on a side of the second clamping plate away from the fixed clamping foot, the second limiting assembly includes a second limiting spring sheet, one end of the limiting spring sheet is connected to the second clamping plate, the other end of the limiting spring sheet is provided with a second limiting protrusion, the second clamping plate is provided with a second limiting through hole at a position corresponding to the second limiting protrusion, the second limiting spring sheet can pass through the second limiting through hole to match the second limiting protrusion with the second limiting groove arranged on the fixed clamping foot;

[0021] There are a plurality of the second limiting grooves, and the plurality of the second limiting grooves are arranged at intervals along the up-down direction.

[0022] In some embodiments, the second long clamping foot includes a third clamping plate and a fourth clamping plate spaced apart in the front-to-back direction, the third clamping plate and the fourth clamping plate are connected via a second side plate, and a space for accommodating the fixed clamping foot is defined between the third clamping plate and the fourth clamping plate.

[0023] The two opposite surfaces of the movable clamping foot in the front-to-back direction are both provided with a second guide groove, and the third clamping plate and the fourth clamping plate are both provided with a second guide rail matched with the second guide groove.

[0024] In some embodiments, the second long clamping foot includes a third clamping plate and a fourth clamping plate spaced apart in the front-to-back direction, the third clamping plate and the fourth clamping plate are connected via a second side plate, and a space for accommodating the fixed clamping foot is defined between the third clamping plate and the fourth clamping plate.

[0025] The two opposite surfaces of the movable clamping foot in the front-to-back direction are both provided with second guide rails, and the third clamping plate and the fourth clamping plate are both provided with second guide grooves matched with the second guide grooves.

[0026] In some embodiments, a third limiting assembly is provided on a side of the third clamping plate away from the fixed clamping foot, the third limiting assembly includes a third limiting spring sheet, one end of the limiting spring sheet is connected to the third clamping plate, the other end of the limiting spring sheet is provided with a third limiting protrusion, the third clamping plate is provided with a third limiting through hole at a position corresponding to the third limiting protrusion, the third limiting spring sheet can pass through the third limiting through hole to match the third limiting protrusion with a third limiting groove arranged on the movable clamping foot;

[0027] There are a plurality of third limiting grooves, and the plurality of third limiting grooves are spaced apart in the up-down direction.

[0028] In some embodiments, a fourth limiting assembly is provided on the side of the fourth clamping plate away from the fixed clamping foot, the fourth limiting assembly includes a fourth limiting spring sheet, one end of the limiting spring sheet is connected to the fourth clamping plate, the other end of the limiting spring sheet is provided with a fourth limiting protrusion, the fourth clamping plate is provided with a fourth limiting through hole at a position corresponding to the fourth limiting protrusion, the fourth limiting spring sheet can pass through the fourth limiting through hole to match the fourth limiting protrusion with a fourth limiting groove arranged on the movable clamping foot;

[0029] There are a plurality of the fourth limiting grooves, and the plurality of the fourth limiting grooves are spaced apart in the up-down direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 1 is a schematic structural diagram of a vernier caliper according to an embodiment of the present invention;

[0031] Figure 2 1 is a schematic structural diagram of a vernier caliper according to an embodiment of the present invention;

[0032] Figure 3 is a structural schematic diagram of a vernier caliper according to another embodiment of the present invention;

[0033] Figure 4 is a cross-sectional view of a fixed foot of a vernier caliper according to an embodiment of the present invention;

[0034] Figure 5 is a cross-sectional view of a fixed foot of a vernier caliper according to another embodiment of the present invention;

[0035] Figure 6 is a cross-sectional view of an active foot of a vernier caliper according to an embodiment of the present invention;

[0036] Figure 7 It is a cross-sectional view of an active foot of a vernier caliper according to another embodiment of the present invention.

[0037] Figure Number:

[0038] 1. Measuring ruler;

[0039] 2. Fixed foot; 201. First measuring surface; 202. First through hole; 203. First limiting groove; 204. Second limiting groove; 205. First fastener;

[0040] 3. movable clamping foot; 301. second measuring surface; 302. second through hole; 303. third limiting groove; 304. fourth limiting groove; 305. second fastener;

[0041] 4. first long clamping foot; 401. third measuring surface; 402. third through hole;

[0042] 403, a first clamping plate; 4031, a first limit through hole;

[0043] 404, second clamping plate; 4041, second position-limiting through hole;

[0044] 406, first side plate;

[0045] 5. second long clamping foot; 501. fourth measuring surface; 502. fourth through hole;

[0046] 503, a third clamping plate; 5031, a third limit passing hole;

[0047] 504, fourth clamping plate; 5041, fourth limit through hole;

[0048] 505, second side panel;

[0049] 6. First position limiting assembly; 601. First position limiting spring; 6011. First position limiting protruding member;

[0050] 7. Second position limiting assembly; 701. Second position limiting spring piece; 7011. Second position limiting protruding member;

[0051] 8. The third limiting assembly; 801. The third limiting spring; 8011. The third limiting protruding member;

[0052] 9. fourth limiting assembly; 901. fourth limiting spring; 9011. fourth limiting protruding member;

[0053] 10. first guide rail; 11. first guide groove;

[0054] 12. Second guide rail; 13. Second guide groove. DETAILED DESCRIPTION

[0055] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0056] The following is combined with Figure 1-7 A vernier caliper according to an embodiment of the present invention will be described.

[0057] The vernier caliper of the embodiment of the present invention includes a measuring ruler 1, a fixed foot 2 and a movable foot 3, wherein the fixed foot 2 is arranged at one end of the measuring ruler 1, and the movable foot 3 is slidably arranged on the measuring ruler 1 so that the movable foot 3 can slide relative to the fixed foot 2, the fixed foot 2 has a first measuring surface 201, and the movable foot 3 has a second measuring surface 301, and the first measuring surface 201 and the second measuring surface 301 are arranged opposite to each other; the first long foot 4 is detachably arranged on the fixed foot 2, the first long foot 4 has a third measuring surface 401, and the third measuring surface 401 is coplanar with the first measuring surface 201; the second long foot 5 is detachably arranged on the movable foot 3, the second long foot 5 has a fourth measuring surface 501, and the fourth measuring surface 501 is coplanar with the second measuring surface 301.

[0058] The vernier caliper of the embodiment of the present invention is provided with a detachable first long clamping foot 4 and a second long clamping foot 5 on the fixed clamping foot 2 and the movable clamping foot 3 respectively, and the first long clamping foot 4 and the second long clamping foot 5 respectively extend the length of the fixed clamping foot 2 and the movable clamping foot 3. Therefore, when it is necessary to measure large-diameter shaft parts, it is only necessary to fix the first long clamping foot 4 and the second long clamping foot 5 on the fixed clamping foot 2 and the movable clamping foot 3 respectively, so that the large-diameter shaft parts can be measured.

[0059] Therefore, the present application has the characteristic of being able to measure large-diameter shaft parts.

[0060] The following is combined with Figure 1-7 The vernier caliper according to the embodiment of the present invention is further described.

[0061] like Figure 1 and 2 As shown, the vernier caliper of the embodiment of the present invention comprises a measuring ruler 1, a fixed clamping foot 2 and a movable clamping foot 3.

[0062] The fixed foot 2 is arranged at one end of the measuring ruler 1, and the movable foot 3 is slidably arranged on the measuring ruler 1 so that the movable foot 3 can slide relative to the fixed foot 2. The fixed foot 2 has a first measuring surface 201, and the movable foot 3 has a second measuring surface 301. The first measuring surface 201 and the second measuring surface 301 are arranged opposite to each other.

[0063] like Figure 1 and 2 As shown, the first long clamping foot 4 is detachably arranged on the fixed clamping foot 2, and the first long clamping foot 4 has a third measuring surface 401, and the third measuring surface 401 is coplanar with the first measuring surface 201;

[0064] like Figure 1 and 2 As shown, the second long clamping pin 5 is detachably arranged on the movable clamping pin 3 , and the second long clamping pin 5 has a fourth measuring surface 501 , and the fourth measuring surface 501 is coplanar with the second measuring surface 301 .

[0065] When it is necessary to measure shaft parts with large diameter, it is only necessary to fix the first long clamping foot 4 and the second long clamping foot 5 on the fixed clamping foot 2 and the movable clamping foot 3 respectively, so that the third measuring surface 401 is coplanar with the first measuring surface 201 and the fourth measuring surface 501 is coplanar with the second measuring surface 301, so as to realize the measurement of shaft parts with large diameter.

[0066] The vernier caliper of the embodiment of the present invention is provided with a detachable first long clamping foot 4 and a second long clamping foot 5 on the fixed clamping foot 2 and the movable clamping foot 3 respectively, and the first long clamping foot 4 and the second long clamping foot 5 respectively extend the length of the fixed clamping foot 2 and the movable clamping foot 3. Therefore, when it is necessary to measure large-diameter shaft parts, it is only necessary to fix the first long clamping foot 4 and the second long clamping foot 5 on the fixed clamping foot 2 and the movable clamping foot 3 respectively, so that the large-diameter shaft parts can be measured.

[0067] In some embodiments, Figure 3 As shown, the fixed pin 2 has a plurality of first through holes 202 spaced apart along the up-down direction, the movable pin 3 has a plurality of second through holes 302 spaced apart along the up-down direction, the first long pin 4 has a plurality of third through holes 402 spaced apart along the up-down direction, and the second long pin 5 has a plurality of fourth through holes 502 spaced apart along the up-down direction.

[0068] The vernier caliper of the embodiment of the present invention also includes a first fastener 205 and a second fastener 305. The first fastener 205 passes through the first through hole 202 and the third through hole 402 to connect and fix the fixed foot 2 and the first long foot 4; the first fastener 205 passes through the first through hole 202 and the third through hole 402 to connect and fix the fixed foot 2 and the first long foot 4, and the third measuring surface 401 is coplanar with the first measuring surface 201; the second fastener 305 passes through the second through hole 302 and the fourth through hole 502 to connect and fix the movable foot 3 and the second long foot 5, and the fourth measuring surface 501 is coplanar with the second measuring surface 301.

[0069] Optionally, the first fastener 205 and the second fastener 305 are both fastening bolt assemblies, and the fastening bolts are connected to the fastening nuts after passing through the first through hole 202 and the third through hole 402, thereby connecting and fixing the fixed foot 2 and the first long foot 4, and the fastening bolts are connected to the fastening nuts after passing through the second through hole 302 and the fourth through hole 502, thereby connecting and fixing the movable foot 3 and the second long foot 5.

[0070] The vernier caliper of the embodiment of the present invention is convenient for disassembly by fixing the first long clamping foot 4 and the fixed clamping foot 2 together by the first fastener 205 and fixing the second long clamping foot 5 and the fixed clamping foot 2 together by the second fastener 305.

[0071] In some embodiments, the first long clamping pin 4 includes a first clamping plate 403 and a second clamping plate 404 spaced apart in the front-to-back direction, the first clamping plate 403 and the second clamping plate 404 are connected by a first side plate 406, and a space for accommodating the fixed clamping pin 2 is defined between the first clamping plate 403 and the second clamping plate 404. As shown in the figure, the first side edge is arranged on the left side of the first clamping plate 403 and the second clamping plate 404 and is connected to the left side edge of the first clamping plate 403 and the second clamping plate 404.

[0072] like Figure 4 As shown, the two opposite surfaces of the fixed foot 2 in the front-to-back direction are both provided with a first guide groove 11 , the first guide groove 11 extends in the up-down direction, and the first clamping plate 403 and the second clamping plate 404 are both provided with a first guide rail 10 matching the first guide groove 11 .

[0073] In some embodiments, different from the above embodiments, Figure 5 As shown, the two opposite surfaces of the fixed foot 2 in the front-to-back direction are both provided with first guide rails 10, the first guide rails 10 are extended in the up-down direction, and the first clamping plate 403 and the second clamping plate 404 are both provided with first guide grooves 11 that match with the first guide grooves 11.

[0074] In some embodiments, Figure 1 As shown, a first limiting component 6 is arranged on the side of the first clamping plate 403 away from the fixed clamping foot 2, and the first limiting component 6 includes a first limiting spring piece 601, one end of the limiting spring piece is connected to the first clamping plate 403, and the other end of the limiting spring piece is arranged with a first limiting protrusion 6011, and a first limiting through hole 4031 is arranged at the position of the first limiting protrusion 6011 of the first clamping plate 403 corresponding to the first limiting protrusion 6011, and the first limiting spring piece 601 can pass through the first limiting through hole 4031 to match the first limiting protrusion 6011 with the first limiting groove 203 arranged on the fixed clamping foot 2; there are multiple first limiting grooves 203, and the multiple first limiting grooves 203 are arranged at intervals in the up and down directions.

[0075] The vernier caliper of the embodiment of the present invention is provided with a first limiting assembly 6. When installing and removing the first long clamping foot 4, it is only necessary to align the first guide rail 10 and the first guide groove 11, and then clamp the first long clamping foot 4 on the fixed clamping foot 2. At this time, the first limiting protrusion 6011 is cooperated to be clamped into the first limiting groove 203. At the same time, the user can move the first long clamping foot 4 in the up and down directions as needed, so that the first limiting protrusion 6011 slides in multiple first limiting grooves 203 until the first long clamping foot 4 moves to the target position, and the first limiting protrusion 6011 is clamped into the corresponding first limiting groove 203, which greatly improves the convenience of installation, disassembly and adjustment of the first long clamping foot 4.

[0076] In some embodiments, Figure 2As shown, a second limiting assembly 7 is arranged on the side of the second clamping plate 404 away from the fixed clamping foot 2, and the second limiting assembly 7 includes a second limiting spring piece 701, one end of the limiting spring piece is connected to the second clamping plate 404, and the other end of the limiting spring piece is arranged with a second limiting protrusion 7011, and the second clamping plate 404 is provided with a second limiting through hole 4041 at the position corresponding to the second limiting protrusion 7011, and the second limiting spring piece 701 can pass through the second limiting through hole 4041 to match the second limiting protrusion 7011 with the second limiting groove 204 arranged on the fixed clamping foot 2; there are multiple second limiting grooves 204, and the multiple second limiting grooves 204 are arranged at intervals in the up and down directions.

[0077] The vernier caliper of the embodiment of the present invention is provided with a second limit assembly 7. When installing and removing the first long clamping foot 4, it is only necessary to align the first guide rail 10 and the first guide groove 11, and then clamp the first long clamping foot 4 on the fixed clamping foot 2. At this time, the second limit protrusion 7011 is cooperated to be clamped into the first limit groove 203. At the same time, the user can move the first long clamping foot 4 in the up and down directions as needed, so that the second limit protrusion 7011 slides in multiple first limit grooves 203 until the first long clamping foot 4 moves to the target position, and the second limit protrusion 7011 is clamped into the corresponding first limit groove 203, which greatly improves the convenience of installation, disassembly and adjustment of the first long clamping foot 4.

[0078] It can be understood that, a first limiting component 6 or a second limiting component 7 can be separately provided on the first long clamping foot 4, or both the first limiting component 6 and the second limiting component 7 can be provided simultaneously.

[0079] In some embodiments, Figure 6 As shown, the second long clamping foot 5 includes a third clamping plate 503 and a fourth clamping plate 504 spaced apart in the front-to-back direction, the third clamping plate 503 and the fourth clamping plate 504 are connected by a second side plate 505, and a space for accommodating the fixed clamping foot 2 is defined between the third clamping plate 503 and the fourth clamping plate 504, and the movable clamping foot 3 is provided with a second guide groove 13 on two opposite surfaces in the front-to-back direction, and the second guide groove 13 is extended in the up-down direction, and the third clamping plate 503 and the fourth clamping plate 504 are provided with a second guide rail 12 matching the second guide groove 13.

[0080] In some embodiments, different from the above embodiments, Figure 7 As shown, the two opposite surfaces of the movable clamping foot 3 in the front-to-back direction are both provided with second guide rails 12, the second guide rails 12 are extended in the up-down direction, and the third clamping plate 503 and the fourth clamping plate 504 are both provided with second guide grooves 13 that match with the second guide grooves 13.

[0081] In some embodiments, a third limiting assembly 8 is provided on the side of the third clamping plate 503 away from the fixed clamping foot 2, and the third limiting assembly 8 includes a third limiting spring piece 801, one end of the limiting spring piece is connected to the third clamping plate 503, and the other end of the limiting spring piece is provided with a third limiting protrusion 8011, and the third clamping plate 503 is provided with a third limiting through hole 5031 at the position corresponding to the third limiting protrusion 8011, and the third limiting spring piece 801 can pass through the third limiting through hole 5031 to match the third limiting protrusion 8011 with the third limiting groove 303 arranged on the movable clamping foot 3; there are multiple third limiting grooves 303, and the multiple third limiting grooves 303 are arranged at intervals in the up and down directions.

[0082] The vernier caliper of the embodiment of the present invention is provided with a third limiting assembly 8. When installing and removing the second long clamping foot 5, it is only necessary to align the second guide rail 12 and the second guide groove 13, and then clamp the second long clamping foot 5 on the movable clamping foot 3. At this time, the third limiting protrusion 8011 is cooperated to be clamped into the third limiting groove 303. At the same time, the user can move the second long clamping foot 5 in the up and down directions as needed, so that the third limiting protrusion 8011 slides in multiple third limiting grooves 303 until the second long clamping foot 5 moves to the target position, and the third limiting protrusion 8011 is clamped into the corresponding third limiting groove 303, which greatly improves the convenience of installation, disassembly and adjustment of the second long clamping foot 5.

[0083] In some embodiments, a fourth limiting assembly 9 is provided on the side of the fourth clamping plate 504 away from the fixed clamping foot 2, and the fourth limiting assembly 9 includes a fourth limiting spring piece 901, one end of the limiting spring piece is connected to the fourth clamping plate 504, and the other end of the limiting spring piece is provided with a fourth limiting protrusion 9011, and the fourth clamping plate 504 is provided with a fourth limiting through hole 5041 at the position corresponding to the fourth limiting protrusion 9011, and the fourth limiting spring piece 901 can pass through the fourth limiting through hole 5041 to match the fourth limiting protrusion 9011 with the fourth limiting groove 304 arranged on the movable clamping foot 3; there are multiple fourth limiting grooves 304, and the multiple fourth limiting grooves 304 are arranged at intervals in the up and down directions.

[0084] The vernier caliper of the embodiment of the present invention is provided with a fourth limiting assembly 9. When installing and removing the second long clamping foot 5, it is only necessary to align the second guide rail 12 and the second guide groove 13, and then clamp the second long clamping foot 5 on the movable clamping foot 3. At this time, the fourth limiting protrusion 9011 is cooperated to be clamped into the fourth limiting groove 304. At the same time, the user can move the second long clamping foot 5 in the up and down directions as needed, so that the fourth limiting protrusion 9011 slides in multiple fourth limiting grooves 304 until the second long clamping foot 5 moves to the target position, and the fourth limiting protrusion 9011 is clamped into the corresponding fourth limiting groove 304, which greatly improves the convenience of installation, disassembly and adjustment of the second long clamping foot 5.

[0085] It can be understood that, a third limiting component 8 or a fourth limiting component 9 can be separately provided on the second long clamping foot 5, or the third limiting component 8 and the fourth limiting component 9 can be provided simultaneously.

[0086] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0091] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vernier caliper, characterized in that: The invention comprises a measuring ruler (1), a fixed foot (2) and a movable foot (3), wherein the fixed foot (2) is arranged at one end of the measuring ruler (1), and the movable foot (3) is slidably arranged on the measuring ruler (1) so that the movable foot (3) can slide relative to the fixed foot (2), the fixed foot (2) has a first measuring surface (201), and the movable foot (3) has a second measuring surface (301), and the first measuring surface (201) and the second measuring surface (301) are arranged relative to each other; A first long clamping foot (4), the first long clamping foot (4) being detachably arranged on the fixed clamping foot (2), the first long clamping foot (4) having a third measuring surface (401), the third measuring surface (401) being coplanar with the first measuring surface (201); A second long clamping foot (5), wherein the second long clamping foot (5) is detachably arranged on the movable clamping foot (3), and the second long clamping foot (5) has a fourth measuring surface (501), and the fourth measuring surface (501) is coplanar with the second measuring surface (301).

2. The vernier caliper according to claim 1, characterized in that: The fixed clamping foot (2) is provided with a plurality of first through holes (202) at intervals along the vertical direction, the movable clamping foot (3) is provided with a plurality of second through holes (302) at intervals along the vertical direction, the first long clamping foot (4) is provided with a plurality of third through holes (402) at intervals along the vertical direction, and the second long clamping foot (5) is provided with a plurality of fourth through holes (502) at intervals along the vertical direction; It also includes a first fastener (205) and a second fastener (305), wherein the first fastener (205) passes through the first through hole (202) and the third through hole (402) to connect and fix the fixed foot (2) and the first long foot (4); The first fastener (205) passes through the first through hole (202) and the third through hole (402) to connect and fix the fixed clamping foot (2) and the first long clamping foot (4); The second fastener (305) passes through the second through hole (302) and the fourth through hole (502) to connect and fix the movable clamping foot (3) and the second long clamping foot (5).

3. The vernier caliper according to claim 1, characterized in that: The first long clamping foot (4) comprises a first clamping plate (403) and a second clamping plate (404) which are spaced apart in the front-to-back direction, the first clamping plate (403) and the second clamping plate (404) being connected via a first side plate (406), and a space for accommodating the fixed clamping foot (2) is defined between the first clamping plate (403) and the second clamping plate (404). The two opposite surfaces of the fixed clamping foot (2) in the front-to-back direction are both provided with a first guide groove (11), and the first clamping plate (403) and the second clamping plate (404) are both provided with a first guide rail (10) matching with the first guide groove (11).

4. The vernier caliper according to claim 1, characterized in that: The first long clamping foot (4) comprises a first clamping plate (403) and a second clamping plate (404) which are spaced apart in the front-to-back direction, the first clamping plate (403) and the second clamping plate (404) being connected via a first side plate (406), and a space for accommodating the fixed clamping foot (2) is defined between the first clamping plate (403) and the second clamping plate (404). The two opposite surfaces of the fixed clamping foot (2) in the front-to-back direction are both provided with a first guide rail (10), and the first clamping plate (403) and the second clamping plate (404) are both provided with a first guide groove (11) matching with the first guide groove (11).

5. The vernier caliper according to claim 3 or 4, characterized in that: A first limiting assembly (6) is arranged on the side of the first clamping plate (403) away from the fixed clamping foot (2), and the first limiting assembly (6) comprises a first limiting spring sheet (601), one end of the limiting spring sheet is connected to the first clamping plate (403), and the other end of the limiting spring sheet is arranged with a first limiting protrusion (6011), and a first limiting through hole (4031) is arranged on the first clamping plate (403) at a position corresponding to the first limiting protrusion (6011), and the first limiting spring sheet (601) can pass through the first limiting through hole (4031) to match the first limiting protrusion (6011) with a first limiting groove (203) arranged on the fixed clamping foot (2); There are a plurality of the first limiting grooves (203), and the plurality of the first limiting grooves (203) are arranged at intervals along the up-down direction.

6. The vernier caliper according to claim 3 or 4, characterized in that: A second limiting assembly (7) is arranged on the side of the second clamping plate (404) away from the fixed clamping foot (2), and the second limiting assembly (7) comprises a second limiting spring sheet (701), one end of the limiting spring sheet is connected to the second clamping plate (404), and the other end of the limiting spring sheet is arranged with a second limiting protrusion (7011), and the second clamping plate (404) is provided with a second limiting through hole (4041) at a position corresponding to the second limiting protrusion (7011), and the second limiting spring sheet (701) can pass through the second limiting through hole (4041) to match the second limiting protrusion (7011) with a second limiting groove (204) arranged on the fixed clamping foot (2); There are a plurality of the second limiting grooves (204), and the plurality of the second limiting grooves (204) are arranged at intervals along the up-down direction.

7. The vernier caliper according to claim 1, characterized in that: The second long clamping foot (5) comprises a third clamping plate (503) and a fourth clamping plate (504) which are arranged at intervals in the front-to-back direction, the third clamping plate (503) and the fourth clamping plate (504) are connected via a second side plate (505), and a space for accommodating the fixed clamping foot (2) is defined between the third clamping plate (503) and the fourth clamping plate (504). The two opposite surfaces of the movable clamping foot (3) in the front-to-back direction are both provided with a second guide groove (13), and the third clamping plate (503) and the fourth clamping plate (504) are both provided with a second guide rail (12) matching with the second guide groove (13).

8. The vernier caliper according to claim 1, characterized in that: The second long clamping foot (5) comprises a third clamping plate (503) and a fourth clamping plate (504) which are arranged at intervals in the front-to-back direction, the third clamping plate (503) and the fourth clamping plate (504) are connected via a second side plate (505), and a space for accommodating the fixed clamping foot (2) is defined between the third clamping plate (503) and the fourth clamping plate (504). The two opposite surfaces of the movable clamping foot (3) in the front-to-back direction are both provided with second guide rails (12), and the third clamping plate (503) and the fourth clamping plate (504) are both provided with second guide grooves (13) matching with the second guide grooves (13).

9. The vernier caliper according to claim 7 or 8, characterized in that: A third limiting assembly (8) is arranged on the side of the third clamping plate (503) away from the fixed clamping foot (2), and the third limiting assembly (8) comprises a third limiting spring sheet (801), one end of the limiting spring sheet is connected to the third clamping plate (503), and the other end of the limiting spring sheet is arranged with a third limiting protrusion (8011), and a third limiting through hole (5031) is arranged on the third clamping plate (503) at a position corresponding to the third limiting protrusion (8011), and the third limiting spring sheet (801) can pass through the third limiting through hole (5031) to match the third limiting protrusion (8011) with a third limiting groove (303) arranged on the movable clamping foot (3); There are a plurality of third limiting grooves (303), and the plurality of third limiting grooves (303) are arranged at intervals along the up-down direction.

10. The vernier caliper according to claim 7 or 8, characterized in that: A fourth limiting assembly (9) is arranged on the side of the fourth clamping plate (504) away from the fixed clamping foot (2), and the fourth limiting assembly (9) comprises a fourth limiting spring sheet (901), one end of the limiting spring sheet is connected to the fourth clamping plate (504), and the other end of the limiting spring sheet is arranged with a fourth limiting protrusion (9011), and a fourth limiting through hole (5041) is arranged on the fourth clamping plate (504) at a position corresponding to the fourth limiting protrusion (9011), and the fourth limiting spring sheet (901) can pass through the fourth limiting through hole (5041) to match the fourth limiting protrusion (9011) with a fourth limiting groove (304) arranged on the movable clamping foot (3); There are a plurality of the fourth limiting grooves (304), and the plurality of the fourth limiting grooves (304) are arranged at intervals along the up-down direction.

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