Fixing device of measuring support

Abstract

The invention discloses a fixing device of a measuring support. The fixing device comprises a measuring platform, a fixing base, a plurality of expansion elastic pieces, an expansion block, a connecting rod, a cam, a fixing rod and a handle. A plurality of connecting holes are formed in the measuring platform; the fixing base is of a cylindrical structure with the top end closed and the bottom end open, and a through hole is formed in the top face of the fixing base. The top ends of the expansion elastic sheets are fixedly connected with the bottom end of the fixed seat; the outer diameter of the structure defined by the expansion elastic pieces is smaller than or equal to the diameter of the connecting hole when not expanded and larger than the diameter of the connecting hole when expanded. The expansion block is arranged under the fixing base, and the diameter of the maximum diameter position of the expansion block is smaller than or equal to the diameter of the connecting hole and larger than the inner diameter of a structure defined by the multiple expansion elastic pieces when the expansion block is not expanded. The connecting rod penetrates through the through hole, and the bottom end of the connecting rod is connected with the expansion block; the fixing rod is perpendicular to the connecting rod, the top end of the connecting rod is rotationally connected with the fixing rod, and the fixing rod is fixedly connected with the cam. According to the device, the measuring bracket can be quickly disassembled and assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring tools, and in particular to a fixing device for a measuring bracket. Background Art

[0002] During the production or development of automotive parts, it is often necessary to measure the parts. The measurement method is to select a measuring bracket that matches the part to be measured and first fix it on the measuring platform, and then fix the part for measurement. In the prior art, bolts are usually used to fix the measuring bracket on the measuring platform. Due to the different types of parts to be measured, different measuring brackets are selected, so the measuring bracket and the measuring platform are frequently disassembled. For the technical solution of using bolts as the connection method between the measuring bracket and the measuring platform, the measuring bracket needs to be manually disassembled and assembled. When the tightening force is too large, it needs to be operated with the help of tools, and the measuring bracket cannot be quickly disassembled and assembled. Summary of the invention

[0003] In order to solve at least one aspect of the above problems, the present invention provides a fixing device for a measuring bracket, comprising a measuring platform, a fixing seat, a plurality of expansion springs, an expansion block, a connecting rod, at least one cam, a fixing rod and a handle; a plurality of connecting holes extending from the top surface to the bottom surface of the measuring platform are provided; the fixing seat is a cylindrical structure with a closed top and an open bottom, and the cross-section of the inner wall of the fixing seat is circular; a through hole is provided on the top surface of the fixing seat along the extension direction of the fixing seat; a plurality of expansion springs are evenly and spacedly distributed along the bottom end of the inner wall of the fixing seat, the extension direction of the expansion springs is the same as the extension direction of the fixing seat, and the top ends of the plurality of expansion springs are fixedly connected to the bottom end of the fixing seat; When not expanded, the outer diameter of the structure formed by the several expansion spring sheets is less than or equal to the diameter of the connecting hole; when expanded, the outer diameter of the structure formed by the several expansion spring sheets is greater than the diameter of the connecting hole; the expansion block is arranged directly below the fixed seat, and the diameter of the expansion block at the maximum diameter is less than or equal to the diameter of the connecting hole, and is greater than the inner diameter of the structure formed by the several expansion spring sheets when not expanded; the connecting rod is passed through the through hole, and the bottom end of the connecting rod is connected to the expansion block; the cam is vertically arranged directly above the fixed seat; the fixed rod is arranged perpendicular to the connecting rod, the top end of the connecting rod is rotatably connected to the fixed rod, and the fixed rod is fixedly connected to the rotation center of the cam; one end of the handle is fixedly connected to the edge of the cam.

[0004] Through the above technical scheme, when the measuring bracket needs to be fixed, the bottom plate of the measuring bracket is placed on the measuring platform, and the mounting hole on the bottom plate is made to correspond to the connecting hole on the measuring platform, and then a number of expansion springs are inserted into the mounting hole and the connecting hole in sequence, and then the cam is rotated by the handle so that the edge of the cam farthest from the rotation center abuts against the top surface of the fixed tube, so that the expansion block moves upward and extends into the structure formed by the expansion springs, so that the structure formed by the expansion springs expands and forms an interference fit with the connecting hole, thereby achieving the fixation of the bottom plate and the measuring platform; when disassembly is required, the cam is rotated by the handle so that the edge of the cam farthest from the rotation center does not abut against the top surface of the fixed tube, and then pressed down, so that the expansion block moves downward and extends into the structure formed by the expansion springs, so that the structure formed by the expansion springs is restored, and then pulled out. The device of the present application has a simple structure, convenient operation, and low cost, and can realize the rapid disassembly and assembly of the measuring bracket and the measuring platform.

[0005] Preferably, a connecting block is arranged between the expansion block and the bottom end of the connecting rod, the diameter of the connecting block is less than or equal to the inner diameter of the structure formed by a plurality of expansion spring sheets when not expanded, the bottom end of the connecting block is fixedly connected to the top end of the expansion block, and the top end of the connecting block is connected to the bottom end of the connecting rod.

[0006] Preferably, the top of the connecting block is threadedly connected to the bottom of the connecting rod. Through the above technical solution, the total length of the connecting rod, the connecting block and the expansion block can be adjusted to adjust the position of the expansion block in the structure formed by a number of expansion springs during expansion, thereby achieving torque adjustment. When the measuring bracket has a gap with the measuring platform after installation or there are signs of looseness, the purpose of increasing the torque can be achieved by reducing the total length of the connecting rod, the connecting block and the expansion block; when it is difficult to press the handle during operation, the torque can be reduced by increasing the total length of the connecting rod, the connecting block and the expansion block.

[0007] Preferably, a limit assembly is provided at the top of one or more of the expansion springs, and the limit assembly includes a limit groove and a limit pin; the limit groove is provided on the outer peripheral surface of the connection block, and the limit groove extends in the vertical direction; the limit pin passes through the top of the expansion spring, and its end is located in the limit groove. Through the above technical solution, the movement of the connection block can be limited by the limit assembly, and its main function is to play a limiting role when adjusting the torque, so as to prevent the expansion spring from being damaged due to excessive adjustment amount, and the ideal torque adjustment result cannot be achieved due to too small adjustment amount.

[0008] Preferably, the expansion block is a truncated cone structure, the bottom end of the expansion spring is fixedly connected to a guide plate, the inner side of the guide plate is an inclined surface matching the outer side of the expansion block, which helps to improve the smoothness of the expansion block moving into the structure formed by a number of expansion springs.

[0009] Preferably, a connecting groove extending along the circumference of the inner wall of the connecting hole is provided at the bottom end thereof, and during expansion, the guide piece is located in the connecting groove, which helps to improve the stability of the connection between the expansion spring piece and the inner wall of the connecting hole during expansion.

[0010] Preferably, there are two cams, which are arranged opposite to each other and whose rotation centers are located on the same horizontal line; the two ends of the fixed rod are respectively fixedly connected to the rotation centers of the two cams; the top end of the connecting rod is fixedly connected with a connecting ring, which is located between the two cams and is sleeved on the fixed rod; one end of the handle is fixedly connected to the two cams at the same time.

[0011] Preferably, a gasket is laid on the outer top surface of the fixing seat to effectively isolate the contact between the cam and the fixing seat, which is beneficial to reducing the wear of the cam.

[0012] Preferably, a fixing ring is provided at the bottom end of the fixing seat, the fixing ring is arranged horizontally, the fixing ring is sleeved at the bottom end of the fixing seat, and the inner wall of the fixing ring is fixedly connected to the outer wall of the bottom end of the fixing seat; a plurality of fixing holes are provided on the fixing ring. Through the above technical solution, when the measuring platform is arranged vertically, the bottom plate of the measuring bracket is connected to the fixing ring through bolts and other connecting parts, which helps to improve the stability of the measuring bracket.

[0013] Preferably, a positioning pin is further included, the diameter of which matches the diameter of the connecting hole, so as to help quickly align the mounting hole of the base plate with the connecting hole of the measuring platform.

[0014] The fixing device of a measuring bracket of the present invention has the following beneficial effects:

[0015] (1) By setting an expansion spring at the bottom end of the fixed tube, setting a connecting rod inside the fixed tube, and setting an expansion block at the bottom end of the connecting rod, the expansion and recovery of the expansion spring are achieved by driving the movement of the expansion block through the connecting rod; by setting a cam at the top end of the fixed tube, the connecting rod is driven to move by utilizing the different distances between the edge of the cam and its rotation center. When the measuring bracket is installed, the bottom plate of the measuring bracket is placed on the measuring platform, and the mounting holes on the bottom plate correspond to the connecting holes on the measuring platform. Then, several expansion springs are inserted into the mounting holes and the connecting holes in sequence, and then the cam is rotated by the handle so that the edge of the cam farthest from the rotation center abuts against the top surface of the fixed tube to complete the installation; when the measuring bracket is disassembled, the cam is rotated by the handle so that the edge of the cam farthest from the rotation center does not abut against the top surface of the fixed tube, and then the expansion spring is pulled out to complete the disassembly. The device of the present application has a simple structure, convenient operation, and low cost, and can realize the rapid disassembly and assembly of the measuring bracket and the measuring platform.

[0016] (2) By arranging a connecting block above the expansion block and designing a threaded connection between the connecting block and the bottom end of the connecting rod, the position of the expansion block in the structure formed by a number of expansion springs can be adjusted during expansion, thereby achieving torque adjustment; by designing a limit assembly between the expansion spring and the connecting block, the movement of the connecting block can be limited. Its main function is to play a limiting role when adjusting the torque, preventing the expansion spring from being damaged due to excessive adjustment when adjusting the torque, and preventing the adjustment from being too small to achieve the ideal torque adjustment result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0018] Figure 1 A schematic structural diagram of a fixing device for a measuring bracket according to an embodiment of the present invention is shown.

[0019] Description of reference numerals:

[0020] 1. Measuring platform; 11. Connecting hole; 111. Connecting groove; 2. Fixing seat; 21. Gasket; 22. Fixing ring; 3. Expansion spring; 31. Guide piece; 32. Limit pin; 4. Expansion block; 5. Connecting block; 51. Limit groove; 6. Connecting rod; 7. Cam; 8. Fixing rod; 9. Handle; 91. Sleeve; 10. Base plate; 101. Mounting hole. DETAILED DESCRIPTION

[0021] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0022] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0023] In order to at least partially solve one or more of the above-mentioned problems and other potential problems, an embodiment of the present disclosure proposes a fixing device for a measuring bracket, comprising a measuring platform 1, a fixing seat 2, a plurality of expansion springs 3, an expansion block 4, a connecting rod 6, at least one cam 7, a fixing rod 8 and a handle 9; the measuring platform 1 is provided with a plurality of connecting holes 11 extending from its top surface to its bottom surface; the fixing seat 2 is a cylindrical structure with a closed top and an open bottom, and the cross-section of the inner wall of the fixing seat 2 is circular; a through hole is provided on the top surface of the fixing seat 2 along the extension direction of the fixing seat 2; a plurality of expansion springs 3 are evenly and spacedly distributed along the bottom end of the inner wall of the fixing seat 2, the extension direction of the expansion springs 3 is the same as the extension direction of the fixing seat 2, and the tops of the plurality of expansion springs 3 are all aligned with the fixing seat 2 The bottom end is fixedly connected; when not expanded, the outer diameter of the structure formed by a number of expansion spring pieces 3 is less than or equal to the diameter of the connecting hole 11; when expanded, the outer diameter of the structure formed by a number of expansion spring pieces 3 is greater than the diameter of the connecting hole 11; the expansion block 4 is arranged directly below the fixing seat 2, and the diameter of the expansion block 4 at the maximum diameter is less than or equal to the diameter of the connecting hole 11, and is greater than the inner diameter of the structure formed by a number of expansion spring pieces 3 when not expanded; the connecting rod 6 is passed through the through hole, and the bottom end of the connecting rod 6 is connected to the expansion block 4; the cam 7 is vertically arranged directly above the fixing seat 2; the fixing rod 8 is arranged perpendicular to the connecting rod 6, the top end of the connecting rod 6 is rotatably connected to the fixing rod 8, and the fixing rod 8 is fixedly connected to the rotation center of the cam 7; one end of the handle 9 is fixedly connected to the edge of the cam 7.

[0024] like Figure 1 As shown, the measuring platform 1 is a flat plate structure, and is provided with a plurality of connecting holes 11 extending from its top surface to its bottom surface. The connecting holes 11 can be selected as through holes or blind holes, and the plurality of connecting holes 11 are evenly distributed on the measuring platform 1; preferably, an annular connecting groove 111 extending along its circumference is provided at the bottom end of the inner wall of the connecting hole 11.

[0025] The fixing seat 2 is arranged vertically, and the fixing seat 2 is a cylindrical structure with a closed top and an open bottom. The shape of the cross-section of the inner wall of the fixing seat 2 is circular, and the shape of the cross-section of the outer wall of the fixing seat 2 is circular or square; a through hole is opened in the middle of the top surface of the fixing seat 2 along the extension direction of the fixing seat 2; preferably, a gasket 21 is laid on the outer top surface of the fixing seat 2, and more preferably, the gasket 21 is made of resin material; in some embodiments, a fixing ring 22 is provided at the bottom end of the fixing seat 2, and the fixing ring 22 is horizontally arranged, and the fixing ring 22 is sleeved on the bottom end of the fixing seat 2, and its inner wall is fixedly connected to the outer wall of the bottom end of the fixing seat 2; a plurality of fixing holes are opened on the fixing ring 22.

[0026] A number of expansion springs 3 are evenly and spacedly distributed along the bottom end of the inner wall of the fixing seat 2, the extension direction of the expansion springs 3 is the same as the extension direction of the fixing seat 2, and the top ends of the several expansion springs 3 are fixedly connected to the bottom end of the fixing seat 2; when not expanded, the outer diameter of the structure formed by the several expansion springs 3 is less than or equal to the diameter of the connecting hole 11; when expanded, the outer diameter of the structure formed by the several expansion springs 3 is greater than the diameter of the connecting hole 11; the expansion block 4 is arranged directly below the fixing seat 2, the diameter of the expansion block 4 at the maximum diameter is less than or equal to the diameter of the connecting hole 11, and is greater than the inner diameter of the structure formed by the several expansion springs 3 when not expanded; in some preferred embodiments, the expansion block 4 is a truncated cone structure, and the bottom end of the expansion spring 3 is fixedly connected with a guide plate 31, the inner side surface of the guide plate 31 is an inclined surface matching the outer side surface of the expansion block 4, and when expanded, the guide plate 31 is located in the connecting groove 111.

[0027] The connecting rod 6 is vertically arranged, the connecting rod 6 is inserted into the through hole, and the bottom end of the connecting rod 6 is connected to the expansion block 4; preferably, a connecting block 5 is arranged between the expansion block 4 and the bottom end of the connecting rod 6, the diameter of the connecting block 5 is less than or equal to the inner diameter of the structure formed by a plurality of expansion spring sheets 3 when not expanded, the bottom end of the connecting block 5 is fixedly connected to the top end of the expansion block 4, the top end of the connecting block 5 is connected to the bottom end of the connecting rod 6, and more preferably, the top end of the connecting block 5 is threadedly connected to the bottom end of the connecting rod 6.

[0028] In a preferred embodiment, a limiting assembly is provided at the top of one or more expansion springs 3, and the limiting assembly includes a limiting groove 51 and a limiting pin 32; the limiting groove 51 is opened on the outer peripheral surface of the connecting block 5, and the limiting groove 51 extends along the vertical direction; the limiting pin 32 passes through the top of the expansion spring 3, and its end is located in the limiting groove 51.

[0029] The cam 7 is vertically arranged just above the fixed seat 2; the fixing rod 8 is arranged perpendicular to the connecting rod 6, the top end of the connecting rod 6 is rotatably connected to the fixing rod 8, and the fixing rod 8 is fixedly connected to the rotation center of the cam 7; one end of the handle 9 is fixedly connected to the edge of the cam 7; preferably, two cams 7 are provided, the two cams 7 are oppositely arranged, and their rotation centers are located on the same horizontal line; the two ends of the fixing rod 8 are respectively fixedly connected to the rotation centers of the two cams 7; the top end of the connecting rod 6 is fixedly connected with a connecting ring, the connecting ring is located between the two cams 7, and is sleeved on the fixing rod 8; one end of the handle 9 is fixedly connected to the opposite sides of the edges of the two cams 7 at the same time; preferably, the other end of the handle 9 is provided with a sleeve 91, the inner diameter of the sleeve 91 is larger than the size of the other end of the handle 9, the handle 9 and the sleeve 91 are detachably connected, and when in use, the sleeve 91 is sleeved at the other end of the handle 9 to extend the length of the handle 9, making the operation more labor-saving.

[0030] In a preferred embodiment, the fixing device of the present application further includes a positioning pin, the diameter of which matches the diameter of the connecting hole 11 and the diameter of the mounting hole 101 on the bottom plate 10 of the measuring bracket.

[0031] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. A fixing device for a measuring bracket, characterized in that: It comprises a measuring platform (1), a fixing seat (2), a plurality of expansion springs (3), an expansion block (4), a connecting rod (6), at least one cam (7), a fixing rod (8) and a handle (9); The measuring platform (1) is provided with a plurality of connection holes (11) extending from the top surface to the bottom surface thereof; The fixing seat (2) is a cylindrical structure with a closed top and an open bottom, and the cross-section of the inner wall of the fixing seat (2) is circular; a through hole is provided on the top surface of the fixing seat (2) along the extension direction of the fixing seat (2); The plurality of expansion springs (3) are evenly and spacedly distributed along the bottom end of the inner wall of the fixing seat (2); the extension direction of the expansion springs (3) is the same as the extension direction of the fixing seat (2); the top ends of the plurality of expansion springs (3) are fixedly connected to the bottom end of the fixing seat (2); when not expanded, the outer diameter of the structure formed by the plurality of expansion springs (3) is less than or equal to the diameter of the connecting hole (11); when expanded, the outer diameter of the structure formed by the plurality of expansion springs (3) is greater than the diameter of the connecting hole (11); The expansion block (4) is arranged directly below the fixing seat (2), and the diameter of the expansion block (4) at its maximum diameter is less than or equal to the diameter of the connecting hole (11), and is larger than the inner diameter of a structure formed by a plurality of expansion spring sheets (3) when not expanded; The connecting rod (6) is inserted into the through hole, and the bottom end of the connecting rod (6) is connected to the expansion block (4); The cam (7) is vertically arranged just above the fixing seat (2); The fixed rod (8) is arranged perpendicular to the connecting rod (6), the top end of the connecting rod (6) is rotatably connected to the fixed rod (8), and the fixed rod (8) is fixedly connected to the rotation center of the cam (7); One end of the handle (9) is fixedly connected to the edge of the cam (7).

2. A fixing device for a measuring bracket according to claim 1, characterized in that: A connecting block (5) is provided between the expansion block (4) and the bottom end of the connecting rod (6); the diameter of the connecting block (5) is less than or equal to the inner diameter of a structure formed by a plurality of expansion spring sheets (3) when not expanded; the bottom end of the connecting block (5) is fixedly connected to the top end of the expansion block (4), and the top end of the connecting block (5) is connected to the bottom end of the connecting rod (6).

3. A fixing device for a measuring bracket according to claim 2, characterized in that: The top end of the connecting block (5) is threadedly connected to the bottom end of the connecting rod (6).

4. A fixing device for a measuring bracket according to claim 2, characterized in that: A limiting assembly is arranged at the top end of one or more of the expansion spring pieces (3), the limiting assembly comprising a limiting groove (51) and a limiting pin (32); the limiting groove (51) is arranged on the outer peripheral surface of the connecting block (5), and the limiting groove (51) extends along the vertical direction; the limiting pin (32) passes through the top end of the expansion spring piece (3), and its end is located in the limiting groove (51).

5. The fixing device for a measuring bracket according to claim 1, characterized in that: The expansion block (4) is a truncated cone structure. The bottom end of the expansion spring piece (3) is fixedly connected to a guide piece (31). The inner side surface of the guide piece (31) is an inclined surface matching the outer side surface of the expansion block (4).

6. A fixing device for a measuring bracket according to claim 5, characterized in that: A connecting groove (111) extending along the circumference of the connecting hole (11) is provided at the bottom end of the inner wall of the connecting hole (11). When expanded, the guide piece (31) is located in the connecting groove (111).

7. A fixing device for a measuring bracket according to claim 1, characterized in that: Two cams (7) are provided, the two cams (7) are arranged opposite to each other, and their rotation centers are located on the same horizontal line; the two ends of the fixed rod (8) are respectively fixedly connected to the rotation centers of the two cams (7); the top end of the connecting rod (6) is fixedly connected to a connecting ring, the connecting ring is located between the two cams (7) and is sleeved on the fixed rod (8); one end of the handle (9) is fixedly connected to the two cams (7) at the same time.

8. The fixing device for a measuring bracket according to claim 1, characterized in that: A gasket (21) is laid on the outer top surface of the fixing seat (2).

9. A fixing device for a measuring bracket according to claim 1, characterized in that: A fixing ring (22) is arranged at the bottom end of the fixing seat (2). The fixing ring (22) is arranged horizontally. The fixing ring (22) is sleeved on the bottom end of the fixing seat (2), and its inner wall is fixedly connected to the outer wall of the bottom end of the fixing seat (2). A plurality of fixing holes are opened on the fixing ring (22).

10. The fixing device of the measuring bracket according to claim 1, characterized in that: It also includes a positioning pin, the diameter of which matches the diameter of the connecting hole (11).

Images