A clamp

Abstract

The present invention provides a clamp, including a first half clamp, a second half clamp, a first pivot, a second pivot and a driving rod; the first half clamp includes a first clamping portion and a first connecting portion; the second half clamp includes a second clamping portion and a second connecting portion, the first clamping portion and the second clamping portion are arranged opposite to each other to form a clamping space; the first half clamp is rotatably connected to the second half clamp, and the clamping space and the second connecting portion are respectively located on both sides of the first connecting portion; the first pivot is arranged on the first half clamp and is rotatably connected to the first half clamp; the second pivot includes a threaded hole, the second pivot is arranged on the second half clamp and is rotatably connected to the second half clamp; one end of the driving rod is rotatably connected to the first pivot, the other end of the driving rod passes through the threaded hole of the second pivot and extends in a direction away from the clamping space, and the driving rod is threadedly matched with the threaded hole.

Description

Technical Field

[0001] The present invention generally relates to the technical field of clamps, and in particular to a dial gauge support clamp with a clamp head that occupies a small space and a locking mechanism that is not in the clamping direction, which is convenient for operation in a narrow space. Background Art

[0002] A micrometer is a precision measuring tool that can measure relative displacement and is widely used in various precision measurement situations. In the field of aircraft maintenance, one of the uses of a micrometer is to measure the axial movement of the input shaft or output shaft (hereinafter referred to as the "transmission shaft") of a transmission gearbox.

[0003] like Figure 1A As shown, the method for measuring the axial movement of the above-mentioned transmission shaft 930 is: use a clamp to fix the micrometer 910 and the gear box 940 together, adjust the position of the micrometer 910 so that the probe contacts the end face of the transmission shaft to be measured, and then apply axial tension and thrust to the transmission shaft in turn, and read the corresponding axial movement on the micrometer.

[0004] In the prior art, please continue to refer to Figure 1A The clamp used to fix the micrometer and the gearbox is often a C-clip 920. However, the spiral locking assembly 921 of the C-clip is arranged in the clamping direction (up and down direction as shown in the figure), and when the C-clip 920 is clamped, it occupies more space in the clamping direction. Figure 1B As shown, when encountering a narrow clamping space, the C-type clamp is extremely inconvenient to disassemble and assemble, and may even make it impossible to clamp.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0006] A main purpose of an embodiment of the present invention is to overcome at least one defect of the above-mentioned prior art and provide a clamp that occupies less space in the clamping direction and whose locking mechanism is not in the clamping direction, so that clamping can be achieved in a small space.

[0007] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0008] According to one aspect of the present invention, a clamp is provided, comprising a first half clamp, a second half clamp, a first pivot, a second pivot and a driving rod; the first half clamp comprises a first clamping portion and a first connecting portion; the second half clamp comprises a second clamping portion and a second connecting portion, the first clamping portion and the second clamping portion are arranged opposite to each other to form a clamping space; the first half clamp is rotatably connected to the second half clamp, and the clamping space and the second connecting portion are respectively located on both sides of the first connecting portion; the first pivot is arranged on the first half clamp and is rotatably connected to the first half clamp; the second pivot comprises a threaded hole, the second pivot is arranged on the second half clamp and is rotatably connected to the second half clamp; one end of the driving rod is rotatably connected to the first pivot, and the other end of the driving rod passes through the threaded hole of the second pivot and extends in a direction away from the clamping space, the outer surface of the driving rod is provided with an external thread, and is threadedly matched with the threaded hole;

[0009] When the driving rod is rotated in a first direction with the axis of the driving rod as the axis, a first thread driving force is generated between the driving rod and the second pivot, and the first thread driving force drives the second pivot and the second connecting part to approach the first connecting part, so as to drive the second clamping part away from the first clamping part;

[0010] When the driving rod is rotated in a second direction with the axis of the driving rod as the axis, a second thread driving force is generated between the driving rod and the second pivot, and the second thread driving force drives the second pivot and the second connecting part away from the first connecting part to drive the second clamping part to approach the first clamping part.

[0011] According to an embodiment of the present invention, the first connecting portion includes a first connecting body, and the first pivot is rotatably connected to the first connecting body;

[0012] The first pivot comprises a first pivot body, the first pivot body comprises a first hole arranged in a radial direction and a first pin groove arranged in an axial direction, the first pin groove penetrates two opposite surfaces of the first pivot body in an axial direction and communicates with the first hole;

[0013] One end of the driving rod is provided with an annular groove, and the end is arranged in the first hole;

[0014] It also includes a pin shaft, which is accommodated in the first pin groove in a manner of partially protruding from the first pin groove; the protruding portion of the pin shaft cooperates with the annular groove to limit the axial movement of the driving rod.

[0015] According to an embodiment of the present invention, the first pivot further comprises two first shaft portions, the two first shaft portions are respectively arranged on both sides of the first pivot body along the axial direction and are coaxial with the first pivot body; each of the first shaft portions has a first side section, a distance between a side wall of the first shaft portion opposite to the first side section and the first side section is a first distance, and the two first side sections are oriented in the same direction;

[0016] The first connecting body comprises two first connecting ribs arranged opposite to each other, each of the first connecting ribs has a first notch corresponding to the first shaft portion, the inner wall of each of the first notches comprises a first arc segment and two first plane segments arranged opposite to each other, the two first plane segments are respectively connected to two ends of the first arc segment and extend outward, and the outer wall surface of the first shaft portion except the first side section can be in rotational contact with the first arc segment;

[0017] Among them, the distance between the two first plane segments is greater than the first distance and smaller than the diameter of the first arc segment, so that the first shaft portion can laterally pass through the first plane segment and enter the first arc segment; when the first shaft portion rotates an angle relative to the first notch about its axis, the first side section does not face any of the first plane segments, and the two first plane segments can limit the first shaft portion from escaping from the first notch.

[0018] According to an embodiment of the present invention, the second connecting portion includes a second connecting body, and the second pivot is rotatably connected to the second connecting body;

[0019] The second pivot includes a second pivot body, the threaded hole is provided in the second pivot body, and the second pivot also includes two second shaft portions, the two second shaft portions are respectively provided on two sides of the second pivot body along the axial direction and are coaxial with the second pivot body; each second shaft portion has a second side section, a side wall of the second shaft portion opposite to the second side section and a distance from the second side section is a second distance, and the two second side sections are oriented in the same direction;

[0020] The second connecting body comprises two second connecting ribs arranged opposite to each other, each of the second connecting ribs has a second notch corresponding to the second shaft portion, the inner wall of each second notch comprises a second arc segment and two second plane segments arranged opposite to each other, the two second plane segments are respectively connected to two ends of the second arc segment and extend outward, and the outer wall surface of the second shaft portion except the second side section can be in rotational contact with the second arc segment;

[0021] Among them, the distance between the two second plane segments is greater than the second distance and smaller than the diameter of the second arc segment, so that the second shaft portion can laterally pass through the second plane segment and enter the second arc segment; when the second shaft portion rotates an angle relative to the second notch about its axis, the second side section does not face any of the second plane segments, and the two second plane segments can limit the second shaft portion from escaping from the second notch.

[0022] According to one embodiment of the present invention, the second pivot further comprises two second connecting shaft portions respectively connected to the two second shaft portions, the two second connecting shaft portions are coaxial with the second pivot body, and each of the second connecting shaft portions is provided with a connecting hole arranged along the axial direction;

[0023] The clamp further comprises a connecting rod, one end of which is connected to the connecting hole.

[0024] According to an embodiment of the present invention, the inner side of the connection between the first clamping portion and the first connecting portion is transitioned in an arc structure.

[0025] According to an embodiment of the present invention, the clamp further comprises a rotating rod, the rotating rod is passed through an end of the driving rod away from the first half clamp, and anti-slip rings are respectively provided at both ends of the rotating rod.

[0026] According to an embodiment of the present invention, the second clamping portion and the second connecting portion are arranged at an obtuse angle, and the second half clamp further comprises a convex rib, and the convex rib is arranged at the connection between the second clamping portion and the second connecting portion;

[0027] The first connecting portion of the first half clip comprises two lugs arranged opposite to each other, and an escape space is formed between the two lugs. With the help of the escape space, the two lugs are respectively located on both sides of the convex rib;

[0028] Also included is a hinge pin, which passes through one of the lugs, the rib and another of the lugs in sequence.

[0029] According to an embodiment of the present invention, the inner side of the connection between the second clamping portion and the convex rib is transitioned in an arc structure.

[0030] According to an embodiment of the present invention, a first protective pad is disposed on a side of the first clamping portion facing the second clamping portion, and a second protective pad is disposed on a side of the second clamping portion facing the first clamping portion.

[0031] It can be seen from the above technical solution that the advantages and positive effects of the clamp of the present invention are:

[0032] By designing the second connection part of the second half clamp and the clamping space to be located on both sides of the first connection part of the first half clamp, respectively, the driving rods respectively connecting the first connection part and the second connection part are also located on the side away from the clamping space. In this way, when the space in the up-down direction is narrow and the space in the front-back direction is large, since the driving rod and the clamping space of the clamp of the present invention are located in the front-back direction, during the clamping process, the first half clamp and the second half clamp can be easily extended into the narrow space, and the operating space of the driving rod located at the rear is also large, so the driving rod can be easily operated to achieve the locking of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0034] Figure 1A Shown is a schematic diagram of measuring the axial movement of a transmission shaft using a C-type clamp in the prior art.

[0035] Figure 1B The diagram shows a C-type clamp in the prior art that cannot be clamped when measuring the axial movement of the transmission shaft.

[0036] Figure 2 is a perspective view showing a clamp according to an exemplary embodiment of the present invention.

[0037] Figure 3 FIG. 1 is a perspective view of a first pivot according to an exemplary embodiment of the present invention.

[0038] Figure 4 yes Figure 3 Side view of.

[0039] Figure 5 yes Figure 4 Section view along line AA.

[0040] Figure 6 FIG. 1 is a side view of a driving rod according to an exemplary embodiment of the present invention.

[0041] Figure 7 is a first perspective view of a second pivot according to an exemplary embodiment of the present invention.

[0042] Figure 8 is a second perspective view of a second pivot according to an exemplary embodiment of the present invention.

[0043] Fig. 9 FIG. 1 is a perspective view showing a first half clip according to an exemplary embodiment of the present invention.

[0044] Fig.10 FIG. 1 is a perspective view showing a second half clip according to an exemplary embodiment of the present invention.

[0045] Fig.11 FIG. 1 is a partial cross-sectional view of a clamp according to an exemplary embodiment of the present invention.

[0046] Fig.12 is an exploded view of a clamp assembly according to an exemplary embodiment of the present invention.

[0047] Figures 13 to 19 FIG. 1 is an assembly diagram of a clamp according to an exemplary embodiment of the present invention.

[0048] The reference numerals are described as follows:

[0049] 10. First half clip

[0050] 101. Clamping Space

[0051] 110. First clamping portion

[0052] 111. First pad

[0053] 120. First connection portion

[0054] 121. First connection body

[0055] 122. First connecting rib

[0056] 1221, the first gap

[0057] 1222, first arc segment

[0058] 1223, first plane segment

[0059] 123. Lugs

[0060] 124. Avoidance Space

[0061] 125. First Pivot

[0062] 126. First pivot body

[0063] 1261. The First Hole

[0064] 1262, first pin groove

[0065] 127. First shaft

[0066] 1271, first side section

[0067] 20. Pin

[0068] 30. Second Half Clip

[0069] 310. Second clamping portion

[0070] 311, Second pad

[0071] 320. Second connection portion

[0072] 321. Second connection body

[0073] 322. Second connecting rib

[0074] 3221, the second gap

[0075] 3222, second arc segment

[0076] 3223, second plane segment

[0077] 323, ribs

[0078] 325. Second Pivot

[0079] 326. Second pivot body

[0080] 3261、Threaded hole

[0081] 327. Second shaft

[0082] 3271, Second Side Section

[0083] 328. Second connecting shaft

[0084] 3281, connection hole

[0085] 40. Connecting rod

[0086] 50. Driving rod

[0087] 510, annular groove

[0088] 520, External thread

[0089] 60. Rotating rod

[0090] 610, anti-slip ring

[0091] 70. Hinge pin

[0092] 810, Bolt

[0093] 820, Single-port clamp

[0094] 830, Double jaw clamp

[0095] 910, Micrometer

[0096] 920, C-type clamp

[0097] 930, Drive shaft

[0098] 940, Transmission gear box

[0099] AB, up and down direction

[0100] CD, left and right direction

[0101] EF, front and rear direction DETAILED DESCRIPTION

[0102] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0103] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the direction of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". The terms "one", "an", "the" and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate open-ended inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third" and "fourth" are used only as labels and are not quantitative limitations on their objects.

[0104] The structure, connection mode and functional relationship of the main components of the clamp provided by the present invention are described in detail below with reference to the accompanying drawings by way of specific implementation methods.

[0105] like Figure 2 As shown, for the convenience of explanation, the direction of the opening of the clamp is defined as "front", represented by the letter "E"; the direction away from the "front" is defined as "rear", represented by the letter "F"; the direction in which the first half of the clamp is located is defined as "up", represented by the letter "A"; the direction away from the "up" is defined as "down", represented by the letter "B"; based on the above-mentioned "front", "rear", "up" and "down", "left" and "right" are further defined, represented by the letters "C" and "D" respectively.

[0106] Please continue reading Figure 2 , and combined with Fig. 9 and Fig.10 As shown, Figure 2 is a perspective view showing a clamp according to an exemplary embodiment of the present invention. Fig. 9 FIG. 1 is a perspective view showing a first half clip according to an exemplary embodiment of the present invention. Fig.101 is a perspective view of a second half clamp according to an exemplary embodiment of the present invention. In this embodiment, the clamp includes a first half clamp 10 , a second half clamp 30 , a first pivot 125 , a second pivot 325 and a driving rod 50 . The first half clamp 10 includes a first clamping portion 110 and a first connecting portion 120; the second half clamp 30 includes a second clamping portion 310 and a second connecting portion 320, the first clamping portion 110 and the second clamping portion 310 are arranged opposite to each other to form a clamping space 101; the first half clamp 10 is rotatably connected to the second half clamp 30, the clamping space 101 and the second connecting portion 320 are respectively located on both sides of the first connecting portion 120; the first pivot 125 is provided on the first half clamp 10 and is rotatably connected to the first half clamp 10; the second pivot 325 is provided on the second half clamp 30 and is rotatably connected to the second half clamp 30, the second pivot 325 includes a threaded hole 3261; one end of the driving rod 50 is rotatably connected to the first pivot 125, the other end of the driving rod 50 passes through the threaded hole 3261 of the second pivot 325 and extends in a direction away from the clamping space 101, and the outer surface of the driving rod 50 is provided with an external thread 520, see Figure 6 and threadedly cooperates with the threaded hole 3261;

[0107] When the driving rod 50 is rotated in the first direction with the axis of the driving rod 50 as the axis, a first thread driving force is generated between the driving rod 50 and the second pivot 325, and the first thread driving force drives the second pivot 325 and the second connecting portion 320 to approach the first connecting portion 120, so as to drive the second clamping portion 310 away from the first clamping portion 110;

[0108] When the driving rod 50 is rotated in the second direction with the axis of the driving rod 50 as the axis, a second thread driving force is generated between the driving rod 50 and the second pivot 325. The second thread driving force drives the second pivot 325 and the second connecting part 320 away from the first connecting part 120, so as to drive the second clamping part 310 to approach the first clamping part 110.

[0109] By designing the second connecting portion 320 of the second half clamp 30 and the clamping space 101 to be located on both sides of the first connecting portion 120 of the first half clamp 10, respectively, the driving rod 50 respectively connecting the first connecting portion 120 and the second connecting portion 320 is also located on the side away from the clamping space 101. In this way, when the space in the up-down direction is narrow and the space in the front-back direction is large, since the driving rod 50 and the clamping space 101 of the clamp of the present invention are located in the front-back direction, during the clamping process of the clamp, the first half clamp 10 and the second half clamp 30 can be easily extended into the narrow space, and the operating space of the driving rod 50 located at the rear is also large, so the driving rod 50 can be easily operated to achieve the locking of the clamp.

[0110] like Figure 3 , Figure 4 and Figure 5As shown, Figure 3 is a perspective view of a first pivot according to an exemplary embodiment of the present invention, Figure 4 yes Figure 3 Side view of Figure 5 yes Figure 4 The cross-sectional view along the AA line. The first pivot 125 includes a first pivot body 126, and the first pivot body 126 includes a first hole 1261 arranged in the radial direction and a first pin groove 1262 arranged in the axial direction, and the first pin groove 1262 penetrates two opposite surfaces of the first pivot body 126 in the axial direction and is connected with the first hole 1261; the first hole 1261 may penetrate the first pivot body 126 in the radial direction, or may not penetrate; preferably, the first hole 1261 does not penetrate the first pivot body 126 in the radial direction, so that when the clamp is locked, the end face of the drive rod 50 presses against the bottom face of the first hole 1261, and the driving force is directly transmitted from the drive rod 50 to the first pivot, while the pin shaft 20 and the annular groove 510 are not in contact and are not subjected to force, thereby avoiding excessive wear or deformation damage of the pin shaft 20 and the annular groove 510.

[0111] like Figure 5 As shown, the first pin groove 1262 is used to accommodate a portion of the pin shaft 20 so that the pin shaft 20 can partially protrude from the first pin groove 1262 in the radial direction; the protruding portion of the pin shaft 20 can cooperate with the annular groove 510 to limit the axial movement of the driving rod 50.

[0112] Continue reading Figure 3 The first pivot 125 also includes two first shaft portions 127, and the two first shaft portions 127 are respectively arranged on both sides of the first pivot body 126 along the axial direction and are coaxial with the first pivot body 126; each first shaft portion 127 has a first side section 1271, and the distance between a side wall of the first shaft portion 127 opposite to the first side section 1271 and the first side section 1271 is a first distance, and the two first side sections 1271 are oriented in the same direction.

[0113] In other words, the first side cut surface 1271 cuts off a portion of the first shaft portion 127 , so that the distance from the first side cut surface 1271 to the other side of the first shaft portion 127 is smaller than the diameter of the first shaft portion 127 .

[0114] like Figure 6 As shown, Figure 6 1 is a side view of a driving rod according to an exemplary embodiment of the present invention. An annular groove 510 is provided at one end of the driving rod 50 , and the end is disposed in the first hole 1261 of the first pivot 125 .

[0115] like Fig.11 As shown, Fig.1112 is a partial cross-sectional view of a clamp according to an exemplary embodiment of the present invention. One end of the driving rod 50 is disposed in the first hole 1261, and the annular groove 510 of the driving rod 50 cooperates with a pin 20 to limit the axial movement of the driving rod 50. In other words, the driving rod 50 can rotate around its own axis, but cannot escape from the first hole 1261.

[0116] Continue reading Figure 6 The outer surface of the driving rod 50 is provided with an external thread 520, and the external thread 520 can be matched with the threaded hole 3261 described below. When the driving rod 50 is rotated in the first direction with the axis of the driving rod 50 as the axis, the driving rod 50 generates a first thread driving force between the threaded hole 3261 and the second connecting portion 320, and the first thread driving force drives the second connecting portion 320 to approach the first connecting portion 120, so as to drive the second clamping portion 310 away from the first clamping portion 110. When the driving rod 50 is rotated in the second direction with the axis of the driving rod 50 as the axis, the driving rod 50 generates a second thread driving force between the threaded hole 3261 and the second connecting portion 320, and the second thread driving force drives the second connecting portion 320 away from the first connecting portion 120, so as to drive the second clamping portion 310 to approach the first clamping portion 110.

[0117] like Figure 7 and Figure 8 As shown, Figure 7 is a first perspective view of a second pivot shaft according to an exemplary embodiment of the present invention, Figure 8 is a second perspective view of a second pivot according to an exemplary embodiment of the present invention.

[0118] The second pivot 325 includes a second pivot body 326, a threaded hole 3261 is opened in the second pivot body 326, and the second pivot 325 also includes two second shaft portions 327, the two second shaft portions 327 are respectively arranged on both sides of the second pivot body 326 along the axial direction and are coaxial with the second pivot body 326; each second shaft portion 327 has a second side section 3271, and the distance between the side wall of the second shaft portion 327 opposite to the second side section 3271 and the second side section 3271 is a second distance, and the two second side sections 3271 are oriented in the same direction.

[0119] In other words, the second side cut surface 3271 cuts off a portion of the second shaft portion 327 , so that the distance from the second side cut surface 3271 to the other side of the second shaft portion 327 is smaller than the diameter of the second shaft portion 327 .

[0120] Please continue reading Figure 7The second pivot 325 further includes two second connecting shaft portions 328 respectively connected to the two second shaft portions 327. The two second connecting shaft portions 328 are coaxial with the second pivot body 326. Each second connecting shaft portion 328 has a connecting hole 3281 arranged along the axial direction. The connecting hole 3281 is used to connect a connecting rod 40, and the connecting rod 40 is used to connect a dial gauge. In some embodiments, the connecting hole 3281 can be a threaded hole, and the connecting rod 40 is threadedly connected to the connecting hole 3281. In other embodiments, the connecting rod 40 and the connecting hole 3281 can also be connected by interference fit or other suitable methods.

[0121] Of course, the connecting rod 40 of the present invention is not limited to being connected to the second connecting shaft portion 328. In other embodiments, the connecting rod 40 can also be connected to other components of the clamp, such as the first pivot 125, the first half clamp 10 or the second half clamp 30, etc., which will not be described one by one here.

[0122] like Fig. 9 As shown, Fig. 9 1 is a perspective view of a first half clamp according to an exemplary embodiment of the present invention. In this embodiment, the first connecting portion 120 includes a first connecting body 121, the first connecting body 121 includes two first connecting ribs 122 arranged opposite to each other, each first connecting rib 122 has a first notch 1221 corresponding to the first shaft portion 127, the inner wall of each first notch 1221 includes a first arc segment 1222 and two first plane segments 1223 arranged opposite to each other, the two first plane segments 1223 are respectively connected to the two ends of the first arc segment 1222 and extend outward, and the outer wall surface of the first shaft portion 127 except the first side section 1271 can be in rotational contact with the first arc segment 1222. The two first plane segments 1223 are parallel to each other.

[0123] Among them, the distance between the two first plane sections 1223 is greater than the first distance and less than the diameter of the first arc section 1222, so that the first shaft portion 127 can horizontally pass through the first plane section 1223 and enter the first arc section 1222; when the first shaft portion 127 rotates an angle relative to the first notch 1221 with its axis as the axis, the first side section 1271 does not face any first plane section 1223, and the two first plane sections 1223 can limit the first shaft portion 127 from escaping from the first notch 1221.

[0124] In one embodiment, the inner side of the connection between the first clamping portion 110 and the first connecting portion 120 is transitioned with an arc structure. When the clamp of the present invention is clamped on an object with an arc shape, the clamping force and stability of the clamp and the clamped object can be improved through the design of the arc structure.

[0125] Continue reading Fig. 9The first connecting portion 120 of the first half clamp 10 includes two oppositely disposed lugs 123, and an escape space 124 is formed between the two lugs 123. With the help of the escape space 124, the two lugs 123 are respectively located on both sides of the rib 323 of the second half clamp 30 described below.

[0126] like Fig.10 As shown, Fig.10 3D is a perspective view of a second half clamp according to an exemplary embodiment of the present invention. In this embodiment, the second connecting portion 320 includes a second connecting body 321, and the second connecting body 321 includes two second connecting ribs 322 arranged opposite to each other, each second connecting rib 322 is provided with a second notch 3221 corresponding to the second shaft portion 327, and the inner wall of each second notch 3221 includes a second arc segment 3222 and two second plane segments 3223 arranged opposite to each other, and the two second plane segments 3223 are respectively connected to the two ends of the second arc segment 3222 and extend outward, and the outer wall surface of the second shaft portion 327 except the second side section 3271 can be in rotational contact with the second arc segment 3222. The two second plane segments 3223 are parallel to each other.

[0127] Among them, the distance between the two second plane sections 3223 is greater than the second distance and less than the diameter of the second arc section 3222, so that the second shaft portion 327 can horizontally pass through the second plane section 3223 and enter the second arc section 3222; when the second shaft portion 327 rotates an angle relative to the second notch 3221 about its axis, the second side section 3271 does not face any second plane section 3223, and the two second plane sections 3223 can limit the second shaft portion 327 from escaping from the second notch 3221.

[0128] In one embodiment, the second clamping portion 310 and the second connecting portion 320 are arranged at an obtuse angle, and the second half clamp 30 further includes a convex rib 323, which is arranged at the connection between the second clamping portion 310 and the second connecting portion 320. The inner side of the connection between the second clamping portion 310 and the convex rib 323 is transitioned with an arc structure. When the clamp of the present invention is clamped on an object with an arc shape, the clamping force and stability of the clamp and the clamped object can be improved through the design of the arc structure.

[0129] like Fig.11 As shown, in one embodiment, the clamp further includes a rotating rod 60 , which is passed through the end of the driving rod 50 away from the first half clamp 10 , and anti-slip rings 610 are respectively provided at both ends of the rotating rod 60 .

[0130] like Fig.11 As shown, a first protective pad 111 is disposed on a side of the first half clamp 10 facing the second half clamp 30 , and a second protective pad 311 is disposed on a side of the second half clamp 30 facing the first half clamp 10 .

[0131] like Fig.12 As shown, Fig.12 8 is an exploded view of a clamp assembly according to an exemplary embodiment of the present invention. The clamp assembly includes a bolt 810, a single-mouth clamp 820, and a double-mouth clamp 830. The single-mouth clamp 820 and the double-mouth clamp 830 are connected by the bolt 810, the first hole 821 on the single-mouth clamp 820 is used to connect with the connecting rod 40 of the present invention, the second hole 831 on the double-mouth clamp 830 is used to connect with the extension assembly of the micrometer, and the third hole 832 on the double-mouth clamp 830 is used to connect with the body of the micrometer.

[0132] By adding a clamp assembly, the micrometer can be flexibly connected to the fixture to adapt to measurements in various positions.

[0133] Combine the following Figures 13 to 19 , the assembly process of the fixture of the present invention is described in detail.

[0134] like Fig.13 As shown, with the help of the avoidance space 124 of the first half clamp 10, the two lugs 123 of the first half clamp 10 can be respectively located on both sides of the rib 323 of the second half clamp 30, and a hinge pin 70 is provided to pass through one of the lugs 123, the rib 323 and the other lug 123 in sequence to realize the hinge connection of the first half clamp 10 and the second half clamp 30.

[0135] like Fig.14 As shown, the distance between a side wall of the second shaft portion 327 opposite to the second side section 3271 and the second side section 3271 is defined as a second distance. Since the distance between the two second plane sections 3223 is greater than the second distance and smaller than the diameter of the second arc section 3222, the two second side sections 3271 of the second pivot are inserted into the second notch 3221 in the direction of the second plane section 3223 on one side of the second notch 3221.

[0136] Then, if Fig.15 As shown, the second pivot is rotated at an angle with the axis of the second pivot as the axis, so that the second side section 3271 does not face any second plane section 3223, so that the two second plane sections 3223 can limit the second shaft portion 327 from escaping from the second notch 3221. Accordingly, the second pivot can rotate in the second notch 3221 without escaping from the second notch 3221.

[0137] like Fig.16As shown, the drive rod 50 and the first pivot are assembled. First, one end of the drive rod 50 with the annular groove 510 is inserted into the first hole 1261 of the first pivot, and then a pin 20 is provided and inserted into the first pin groove 1262 of the first pivot. Since part of the pin 20 protrudes from the first pin groove 1262, the pin 20 can cooperate with the annular groove 510 to limit the axial movement of the drive rod 50.

[0138] The length of the pin shaft 20 is equal to the axial length of the first pivot body 126 . In other words, both ends of the pin shaft 20 in the first pin groove 1262 do not protrude from the axial side walls of the first pivot body 126 .

[0139] Next, see Fig.17 and Fig.18 The method of installing the first pivot into the first notch 1221 is the same as the method of installing the second pivot described above, and will not be described in detail here.

[0140] like Fig.19 As shown, one end of the driving rod 50 away from the annular groove 510 is inserted into the threaded hole 3261 of the second pivot, and the driving rod 50 is rotated so that the driving rod 50 passes through the threaded hole 3261 to a suitable length.

[0141] Finally, the rotating rod 60 is inserted into the end of the driving rod 50 away from the annular groove 510 , and anti-slip rings 610 are sleeved on both ends of the rotating rod 60 .

[0142] In summary, the advantages and beneficial effects of the clamp of the present invention are:

[0143] By designing the second connection part 320 of the second half clamp 30 and the clamping space 101 to be located on both sides of the first connection part 120 of the first half clamp 10, respectively, the driving rod 50 respectively connecting the first connection part 120 and the second connection part 320 is also located on the side away from the clamping space 101. In this way, when the space in the up-down direction is narrow and the space in the front-back direction is large, since the driving rod 50 and the clamping space 101 of the clamp of the present invention are located in the front-back direction, during the clamping process, the first half clamp 10 and the second half clamp 30 can be easily extended into the narrow space, and the operating space of the driving rod 50 located at the rear is also large, so the driving rod 50 can be easily operated to achieve the locking of the clamp.

[0144] It should be noted that the fixture shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0145] It should be understood that the present invention is not limited in its application to the detailed structure and arrangement of the components proposed in this specification. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

Claims

1. A clamp, characterized in that: include: A first half clamp comprises a first clamping portion and a first connecting portion; the first connecting portion comprises a first connecting body; The second half clamp comprises a second clamping portion and a second connecting portion, wherein the first clamping portion and the second clamping portion are arranged opposite to each other to form a clamping space; the first half clamp is rotatably connected to the second half clamp, and the clamping space and the second connecting portion are respectively located on both sides of the first connecting portion; the second connecting portion comprises a second connecting body; The first pivot is arranged on the first half clamp and is rotatably connected to the first half clamp; the first pivot is rotatably connected to the first connecting body; the first pivot includes a first pivot body and two first shaft portions, the first pivot body includes a first hole arranged in a radial direction and a first pin groove arranged in an axial direction, the first pin groove passes through two opposite surfaces of the first pivot body in the axial direction and is connected to the first hole; the two first shaft portions are respectively arranged on both sides of the first pivot body in the axial direction and are coaxial with the first pivot body; each first shaft portion has a first side section, and the distance between a side wall of the first shaft portion opposite to the first side section and the first side section is a first distance, and the two first side sections are oriented in the same direction; the first connecting body includes two relatively arranged first a connecting rib, each of the first connecting ribs is provided with a first notch corresponding to the first shaft portion, the inner wall of each of the first notches comprises a first arc segment and two first plane segments arranged opposite to each other, the two first plane segments are respectively connected to the two ends of the first arc segment and extend outward, the outer wall surface of the first shaft portion except the first side section can be in rotational contact with the first arc segment; wherein the distance between the two first plane segments is greater than the first distance and less than the diameter of the first arc segment, so that the first shaft portion can transversely pass through the first plane segment and enter the first arc segment; when the first shaft portion rotates at an angle relative to the first notch with its axis as the axis, the first side section does not face any of the first plane segments, and the two first plane segments can restrict the first shaft portion from escaping from the first notch; The second pivot includes a threaded hole, the second pivot is arranged on the second half-clamp and is rotatably connected to the second half-clamp; the second pivot is rotatably connected to the second connecting body; the second pivot includes a second pivot body, the threaded hole is opened in the second pivot body, the second pivot also includes two second shaft parts, the two second shaft parts are respectively arranged on both sides of the second pivot body along the axial direction, and are coaxial with the second pivot body; each second shaft part has a second side section, and the distance between a side wall of the second shaft part opposite to the second side section and the second side section is a second distance, and the two second side sections are oriented in the same direction; the second connecting body includes two oppositely arranged second connecting ribs, and each of the second connecting ribs has a second side section. The second notch corresponding to the second shaft portion, the inner wall of each second notch includes a second arc segment and two second plane segments arranged oppositely, the two second plane segments are respectively connected to the two ends of the second arc segment and extend outward, and the outer wall surface of the second shaft portion except the second side section can be rotatably contacted with the second arc segment; wherein the distance between the two second plane segments is greater than the second distance and smaller than the diameter of the second arc segment, so that the second shaft portion can transversely pass through the second plane segment and enter the second arc segment; when the second shaft portion rotates by an angle relative to the second notch with its axis as the axis, the second side section does not face any second plane segment, and the two second plane segments can limit the second shaft portion from escaping from the second notch; and A driving rod, one end of which is rotatably connected to the first pivot, the other end of which passes through the threaded hole of the second pivot and extends in a direction away from the clamping space, the outer surface of the driving rod is provided with an external thread, and is threadably matched with the threaded hole; one end of the driving rod is provided with an annular groove, and the end is arranged in the first hole; a pin shaft, the pin shaft being received in the first pin groove in a manner of partially protruding from the first pin groove; the protruding portion of the pin shaft cooperates with the annular groove to limit the axial movement of the driving rod; When the driving rod is rotated in a first direction with the axis of the driving rod as the axis, a first thread driving force is generated between the driving rod and the second pivot, and the first thread driving force drives the second pivot and the second connecting part to approach the first connecting part, so as to drive the second clamping part away from the first clamping part; When the driving rod is rotated in a second direction with the axis of the driving rod as the axis, a second thread driving force is generated between the driving rod and the second pivot, and the second thread driving force drives the second pivot and the second connecting part away from the first connecting part to drive the second clamping part to approach the first clamping part.

2. The clamp according to claim 1, characterized in that: The second pivot further includes two second connecting shaft portions respectively connected to the two second shaft portions, the two second connecting shaft portions are coaxial with the second pivot body, and each second connecting shaft portion is provided with a connecting hole arranged along the axial direction; The clamp further comprises a connecting rod, one end of which is connected to the connecting hole.

3. The clamp according to claim 1, characterized in that: The inner side of the connection between the first clamping portion and the first connecting portion is transitioned in an arc structure.

4. The clamp according to claim 1, characterized in that: The clamp further comprises a rotating rod, which is passed through an end of the driving rod away from the first half clamp, and both ends of the rotating rod are respectively provided with anti-slip rings.

5. The clamp according to claim 1, characterized in that: The second clamping portion and the second connecting portion are arranged at an obtuse angle, and the second half clamp further comprises a convex rib, and the convex rib is arranged at the connection between the second clamping portion and the second connecting portion; The first connecting portion of the first half clip comprises two lugs arranged opposite to each other, and an escape space is formed between the two lugs. With the help of the escape space, the two lugs are respectively located on both sides of the convex rib; Also included is a hinge pin, which passes through one of the lugs, the rib and another of the lugs in sequence.

6. The clamp according to claim 5, characterized in that: The inner side of the connection between the second clamping portion and the convex rib is transitioned in an arc structure.

7. The clamp according to claim 1, characterized in that: A first protective pad is disposed on a side of the first clamping portion facing the second clamping portion, and a second protective pad is disposed on a side of the second clamping portion facing the first clamping portion.

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