Inner diameter measuring device for automobile ball cage holder

Abstract

The utility model is suitable for the technical field of ball cage holder inner diameter measurement, and provides an automobile ball cage holder inner diameter measuring device, which comprises a base, and is characterized in that the bottom of the base is fixedly connected with four supporting rods, the tops of the supporting rods are fixedly connected with a mounting frame, the mounting frame is in an inverted U shape, and the mounting frame is fixedly connected with the base. The top of the mounting frame is provided with a fixing mechanism used for fixing the ball cage retainers with different diameters, the top of the base is provided with a measuring mechanism used for measuring the inner diameters of the ball cage retainers, and the fixing mechanism comprises a rotating groove. By arranging the fixing mechanism, a knob can be rotated to adjust the distance among the four extension rods, so that the ball cage retainers with different diameters can be fixed, the application range of the device is improved, and a protection structure is arranged in the device, so that the deformation of the ball cage retainers caused by excessive force output of the extension rods can be avoided.

Description

Technical Field

[0001] The utility model belongs to the field of measuring the inner diameter of a ball cage holder, in particular to a device for measuring the inner diameter of a vehicle ball cage holder. Background Art

[0002] The outer ball joint (CVJ) is a crucial component in a car's transmission system, transferring engine power from the transmission to the drive wheels, enabling high-speed propulsion. The outer ball joint retainer plays a crucial role in this system. The outer ball joint retainer is a hollow sphere with a defined wall thickness. Currently, the six-window outer ball joint retainer is the most widely used. This six-window retainer is a relatively precise component, requiring precise alignment with other components. Even small dimensional deviations can cause significant shock, noise, and vibration during the use of the universal joint. Therefore, the inner diameter of the retainer must be measured during the production process.

[0003] However, the above patent has the following shortcomings:

[0004] The existing device for measuring the inner diameter of a vehicle CVJ cage has no protective structure on its adjustable fixing mechanism. Therefore, when fixing CVJ cages of different diameters, the adjustable components on the fixing structure may cause the CVJ cage to deform, thereby damaging the workpiece. Utility Model Content

[0005] The utility model provides a device for measuring the inner diameter of a vehicle ball cage holder, aiming to solve the problem of the device for measuring the inner diameter of a vehicle ball cage holder mentioned in the above background technology.

[0006] The utility model is realized as follows: a device for measuring the inner diameter of a vehicle ball cage cage comprises a base, the bottom of the base is fixedly connected to a support rod, the number of the support rods is set to four, the top of the support rod is fixedly connected to a mounting frame, the mounting frame is set to be an "inverted U" shape, and the top of the mounting frame is provided with a fixing mechanism for fixing ball cage cages of different diameters;

[0007] A measuring mechanism for measuring the inner diameter of the ball cage retainer is provided on the top of the base.

[0008] Preferably, the fixing mechanism includes a rotating groove, the rotating groove is arranged inside the mounting frame, four limiting grooves are provided through the top of the rotating groove, a rotating disk is rotatably provided inside the rotating groove, four guide grooves are opened on the surface of the rotating disk, the four guide grooves are all arranged in an arc shape, positioning blocks are movably provided inside the four guide grooves, the tops of the four positioning blocks are fixedly connected to extension rods, the middle parts of the four extension rods are respectively penetrated by four limiting grooves, and the middle parts of the four extension rods are penetrated by limiting rods;

[0009] The limiting rod is slidably connected to the extension rod, and both ends of the limiting rod are fixedly connected to the inner wall of the limiting groove;

[0010] The bottom of the rotating disk is fixedly connected to a rotating shaft, the bottom of the rotating shaft passes through the mounting frame, the rotating shaft is rotatably connected to the mounting frame, and the bottom of the rotating shaft is provided with a driving structure for driving the rotating plate;

[0011] The rotation of the rotating shaft can drive the rotating disk to rotate. As the rotating disk rotates, the four guide grooves on its surface will squeeze and drive the four positioning blocks to move synchronously, thereby driving the four extension rods to open or contract synchronously through the four positioning blocks, so that ball cage retainers of different diameters can be fixed through the four extension rods.

[0012] Preferably, the driving structure includes a driven disk, the top of the driven disk is fixedly connected to the rotating shaft, a plurality of sliding grooves are provided on the outer circumference of the driven disk, and a plurality of limit blocks are slidably provided inside the plurality of sliding grooves;

[0013] One end of the limit block is fixedly connected to a clamping block, and the other end of the limit block is provided with a return spring, the end of the clamping block is provided with a chamfer, one end of the return spring abuts against the inner wall of the slide groove, and the other end of the return spring abuts against the limit block;

[0014] The outer periphery of the driven disc is provided with a rotating ring, the cross-section of which is U-shaped, the outer periphery of which is provided with a gear ring, the inner wall of which is provided with a plurality of slots, the slots being matched with the blocks, and one side of the gear ring is provided with a fixing frame;

[0015] The top of the fixed frame is fixedly connected to the mounting frame, a first threaded rod is rotatably provided in the middle of the fixed frame, a first knob is fixedly connected to the end of the first threaded rod, a moving rod is threadedly connected to the outer periphery of the first threaded rod, a side wall of the moving rod is fitted with the fixed frame, a rack is fixedly connected to the side of the moving rod away from the fixed frame, and the rack is meshed with the gear ring;

[0016] By rotating the first knob, the first threaded rod can be driven to rotate, and the moving rod is limited by the fixed frame and cannot rotate on its own and is threadedly connected to the first threaded rod, so that when the first threaded rod rotates, the moving rod will be driven and moved, and when the moving rod moves, it will drive the gear ring and the rotating ring to rotate synchronously through the rack. At the same time, the rotating ring will drive the card block and the driven disk connected to the card block to rotate through the card slot, and the driven disk will drive the rotating disk to rotate through the rotating shaft.

[0017] When the resistance between the driven plate and the rotating ring is too large, the block will be subjected to greater pressure at the chamfer and will overcome the elastic force of the return spring to shrink into the slide groove, and the rotating ring and the driven plate will be misaligned, thereby preventing the driven plate and the rotating plate from being subjected to greater torque, which will cause the four extension rods to excessively squeeze the ball cage holder, thereby causing the ball cage holder to deform.

[0018] Preferably, the measuring mechanism includes a positioning rod, the bottom of the positioning rod is fixedly connected to the base, the number of the positioning rods is set to two, a moving part is slidably provided between the two positioning rods, a second threaded rod is rotatably provided at the bottom of the moving part, the middle part of the second threaded rod is threadedly connected to the base, the bottom of the second threaded rod is fixedly connected to a second knob, a plug-in slot is provided in the middle of the positioning rod, a dial indicator is plugged in the middle of the plug-in slot, a fixing bolt is fixedly connected to the top of the positioning rod, and the bottom of the fixing bolt corresponds to the dial indicator;

[0019] By plugging the dial indicator into the socket and fixing it with a fixing bolt, the inner diameter of the ball cage holder can be measured by the dial indicator, and the second threaded rod can be driven to rotate by rotating the second knob. Since the second threaded rod is threadedly connected to the base, it moves up and down when the second threaded rod rotates, and drives the moving part and the dial indicator to move up and down, so that the height of the dial indicator can be adjusted.

[0020] Preferably, the outer periphery of the positioning block is rotatably connected to a plurality of rotating wheels, and the plurality of rotating wheels are distributed around the center of the positioning block, and the outer periphery of the extension rod is rotatably sleeved with a contact ring;

[0021] By arranging multiple rotating wheels on the periphery of the positioning block, the sliding friction between the positioning block and the guide groove can be converted into the rotational friction of the rotating wheel, thereby reducing the wear on the guide wheel and the rotating wheel, and thus improving the service life of the device. By arranging a contact ring on the periphery of the extension rod, after the ball cage retainer is fixed to the periphery of the four extension rods, the contact ring will also rotate synchronously when the ball cage retainer rotates, thereby preventing the inside of the ball cage retainer from being scratched.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is a device for measuring the inner diameter of a vehicle ball cage:

[0023] By setting up a fixing mechanism, the distance between the four extension rods can be adjusted by rotating the knob, so that ball cage holders of different diameters can be fixed, which is conducive to improving the applicability of the device. A protective structure is set in the device to prevent the ball cage holder from being deformed due to excessive force exerted by the extension rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a first-perspective stereogram of the present invention;

[0025] Figure 2 This is a second perspective stereogram of the present invention;

[0026] Figure 3 This is a schematic diagram of the fixing mechanism of the present utility model;

[0027] Figure 4 This is a cross-sectional view of the mounting bracket of the present utility model;

[0028] Figure 5 It is a partial three-dimensional diagram of the fixing mechanism of the utility model;

[0029] Figure 6 It is a partial cross-sectional view of the fixing mechanism of the present utility model.

[0030] In the picture:

[0031] 1. Base; 11. Support rod; 12. Mounting bracket;

[0032] 2. Fixing mechanism; 21. Rotating groove; 22. Limiting groove; 23. Rotating plate; 24. Guide groove; 25. Positioning block; 26. Extension rod; 27. Limiting rod; 28. Rotating shaft; 29. Driving structure;

[0033] 291, driven plate; 292, slide; 293, limit block; 294, clamping block; 295, return spring; 296, rotating ring; 297, gear ring; 298, clamping slot; 299, fixed frame; 2910, first threaded rod; 2911, first knob; 2912, moving rod; 2913, rack;

[0034] 3. Measuring mechanism; 31. Positioning rod; 32. Moving part; 33. Second threaded rod; 34. Second knob; 35. Connecting slot; 36. Dial indicator; 37. Fixing bolt;

[0035] 4. Rotating wheel; 41. Contact ring. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] See also Figure 1-6 The utility model provides a technical solution: a device for measuring the inner diameter of a vehicle ball cage cage, comprising a base 1, a support rod 11 fixedly connected to the bottom of the base 1, the number of the support rods 11 being set to four, a mounting frame 12 fixedly connected to the top of the support rod 11, the mounting frame 12 being set to an "inverted U" shape, and a fixing mechanism 2 for fixing ball cage cages of different diameters being provided on the top of the mounting frame 12;

[0042] A measuring mechanism 3 for measuring the inner diameter of the ball cage holder is provided on the top of the base 1 .

[0043] Furthermore, the fixing mechanism 2 includes a rotating groove 21, which is arranged inside the mounting frame 12. Four limiting grooves 22 are provided on the top of the rotating groove 21. A rotating disk 23 is rotatably provided inside the rotating groove 21. Four guide grooves 24 are opened on the surface of the rotating disk 23. The four guide grooves 24 are all arranged in an arc shape. Positioning blocks 25 are movably provided inside the four guide grooves 24. Extension rods 26 are fixedly connected to the tops of the four positioning blocks 25. The middle parts of the four extension rods 26 respectively pass through the four limiting grooves 22. The middle parts of the four extension rods 26 are each penetrated by a limiting rod 27.

[0044] The limiting rod 27 is slidably connected to the extension rod 26, and both ends of the limiting rod 27 are fixedly connected to the inner wall of the limiting groove 22;

[0045] A rotating shaft 28 is fixedly connected to the bottom of the rotating disk 23. The bottom of the rotating shaft 28 passes through the mounting frame 12. The rotating shaft 28 is rotatably connected to the mounting frame 12. A driving structure 29 for driving the rotating plate is provided at the bottom of the rotating shaft 28.

[0046] Furthermore, the driving structure 29 includes a driven disk 291 , the top of which is fixedly connected to the rotating shaft 28 , a plurality of sliding grooves 292 are provided on the outer periphery of the driven disk 291 , and a limit block 293 is slidably provided inside each of the plurality of sliding grooves 292 ;

[0047] One end of the limit block 293 is fixedly connected to a clamping block 294, and the other end of the limit block 293 is provided with a return spring 295. The end of the clamping block 294 is chamfered. One end of the return spring 295 abuts against the inner wall of the slide groove 292, and the other end of the return spring 295 abuts against the limit block 293.

[0048] A rotating ring 296 is provided on the outer periphery of the driven disk 291. The cross-section of the rotating ring 296 is set to be U-shaped. A gear ring 297 is provided on the outer periphery of the rotating ring 296. A plurality of slots 298 are provided on the inner wall of the rotating ring 296. The slots 298 match the clamping blocks 294. A fixing frame 299 is provided on one side of the gear ring 297.

[0049] The top of the fixed frame 299 is fixedly connected to the mounting frame 12, and a first threaded rod 2910 is rotatably provided in the middle of the fixed frame 299, and a first knob 2911 is fixedly connected to the end of the first threaded rod 2910, and a moving rod 2912 is threadedly connected to the outer periphery of the first threaded rod 2910, and the side wall of the moving rod 2912 is fitted with the fixed frame 299, and a rack 2913 is fixedly connected to the side of the moving rod 2912 away from the fixed frame 299, and the rack 2913 is meshed with the gear ring 297.

[0050] Furthermore, the measuring mechanism 3 includes a positioning rod 31, the bottom of the positioning rod 31 is fixedly connected to the base 1, the number of positioning rods 31 is set to two, a moving part 32 is slidably arranged between the two positioning rods 31, a second threaded rod 33 is rotatably arranged at the bottom of the moving part 32, the middle part of the second threaded rod 33 is threadedly connected to the base 1, and a second knob 34 is fixedly connected to the bottom of the second threaded rod 33. A plug-in slot 35 is opened in the middle of the positioning rod 31, and a micrometer 36 is plugged in the middle of the plug-in slot 35. A fixing bolt 37 is fixedly connected to the top of the positioning rod 31, and the bottom of the fixing bolt 37 corresponds to the micrometer 36.

[0051] Furthermore, the outer periphery of the positioning block 25 is rotatably connected to a plurality of rotating wheels 4 , and the plurality of rotating wheels 4 are distributed around the center of the positioning block 25 , and the outer periphery of the extension rod 26 is rotatably sleeved with a contact ring 41 .

[0052] The working principle and use process of this utility model:

[0053] By rotating the first knob 2911, the first threaded rod 2910 can be driven to rotate, and the moving rod 2912 is limited by the fixed frame 299 and cannot rotate on its own and is threadedly connected to the first threaded rod 2910, so that when the first threaded rod 2910 rotates, the moving rod 2912 will be driven and moved. When the moving rod 2912 moves, it will drive the gear ring 297 and the rotating ring 296 to rotate synchronously through the rack 2913. At the same time, the rotating ring 296 will drive the block 294 and the driven disk 291 connected to the block 294 to rotate through the slot 298. At the same time, the driven disk 291 will drive the rotating disk 23 to rotate through the rotating shaft 28.

[0054] As the rotating disk 23 rotates, the four guide grooves 24 on its surface squeeze and drive the four positioning blocks 25 to move synchronously, thereby driving the four extension rods 26 to expand or contract synchronously through the four positioning blocks 25, so that ball cages with different diameters can be fixed through the four extension rods 26;

[0055] When the resistance between the driven disc 291 and the rotating ring 296 is too great, the clamping block 294 will be subjected to greater pressure at the chamfer and will overcome the elastic force of the return spring 295 and retract into the sliding groove 292. The rotating ring 296 and the driven disc 291 will be misaligned, thereby preventing the driven disc 291 and the rotating disc 23 from being subjected to greater torque, which would cause the four extension rods 26 to over-squeeze the ball cage holder, thereby causing the ball cage holder to deform.

[0056] By inserting the micrometer 36 into the insertion slot 35 and fixing it with the fixing bolt 37, the inner diameter of the ball cage holder can be measured by the micrometer 36, and the second threaded rod 33 can be driven to rotate by rotating the second knob 34. Because the second threaded rod 33 is threadedly connected to the base 1, when the second threaded rod 33 rotates, it will move up and down, and drive the moving part 32 and the micrometer 36 to move up and down, so that the height of the micrometer 36 can be adjusted.

Claims

1. A device for measuring the inner diameter of a vehicle ball cage holder, comprising a base (1), characterized in that: The bottom of the base (1) is fixedly connected to a support rod (11), the number of the support rods (11) is set to four, the top of the support rod (11) is fixedly connected to a mounting frame (12), the mounting frame (12) is set to be an "inverted U" shape, and the top of the mounting frame (12) is provided with a fixing mechanism (2) for fixing ball cage retainers of different diameters; A measuring mechanism (3) for measuring the inner diameter of the ball cage retainer is provided on the top of the base (1).

2. The device for measuring the inner diameter of a vehicle ball cage according to claim 1, characterized in that: The fixing mechanism (2) comprises a rotating groove (21), the rotating groove (21) is arranged inside the mounting frame (12), four limiting grooves (22) are provided through the top of the rotating groove (21), a rotating disk (23) is rotatably provided inside the rotating groove (21), four guide grooves (24) are provided on the surface of the rotating disk (23), the four guide grooves (24) are all arranged in an arc shape, positioning blocks (25) are movably provided inside the four guide grooves (24), the tops of the four positioning blocks (25) are fixedly connected to extension rods (26), the middle parts of the four extension rods (26) are respectively provided through the four limiting grooves (22), and the middle parts of the four extension rods (26) are provided through the limiting rods (27); The limiting rod (27) is slidably connected to the extension rod (26), and both ends of the limiting rod (27) are fixedly connected to the inner wall of the limiting groove (22); The bottom of the rotating disk (23) is fixedly connected to a rotating shaft (28), the bottom of the rotating shaft (28) passes through the mounting frame (12), the rotating shaft (28) is rotatably connected to the mounting frame (12), and the bottom of the rotating shaft (28) is provided with a driving structure (29) for driving the rotating plate.

3. The device for measuring the inner diameter of a vehicle ball cage as claimed in claim 2, characterized in that: The driving structure (29) includes a driven disk (291), the top of the driven disk (291) is fixedly connected to the rotating shaft (28), a plurality of sliding grooves (292) are provided on the outer periphery of the driven disk (291), and a limiting block (293) is slidably provided inside each of the plurality of sliding grooves (292); One end of the limit block (293) is fixedly connected to a clamping block (294), and the other end of the limit block (293) is provided with a return spring (295). The end of the clamping block (294) is provided with a chamfer. One end of the return spring (295) abuts against the inner wall of the slide groove (292), and the other end of the return spring (295) abuts against the limit block (293). The driven disk (291) is provided with a rotating ring (296) on the outer periphery of the rotating disk (291), the cross-section of the rotating ring (296) is set to be U-shaped, the outer periphery of the rotating ring (296) is provided with a gear ring (297), the inner wall of the rotating ring (296) is provided with a plurality of slots (298), the slots (298) match the clamping blocks (294), and a fixing frame (299) is provided on one side of the gear ring (297); The top of the fixed frame (299) is fixedly connected to the mounting frame (12); a first threaded rod (2910) is rotatably provided in the middle of the fixed frame (299); a first knob (2911) is fixedly connected to the end of the first threaded rod (2910); a movable rod (2912) is threadedly connected to the outer periphery of the first threaded rod (2910); a side wall of the movable rod (2912) is fitted with the fixed frame (299); a rack (2913) is fixedly connected to the side of the movable rod (2912) away from the fixed frame (299); and the rack (2913) is meshed with the gear ring (297).

4. The device for measuring the inner diameter of a vehicle ball cage as claimed in claim 3, characterized in that: The measuring mechanism (3) comprises a positioning rod (31), the bottom of the positioning rod (31) is fixedly connected to the base (1), the number of the positioning rods (31) is set to two, a moving part (32) is slidably arranged between the two positioning rods (31), a second threaded rod (33) is rotatably arranged at the bottom of the moving part (32), the middle of the second threaded rod (33) is threadedly connected to the base (1), the bottom of the second threaded rod (33) is fixedly connected to a second knob (34), a plug-in slot (35) is provided in the middle of the positioning rod (31), a dial indicator (36) is plugged in the middle of the plug-in slot (35), a fixing bolt (37) is fixedly connected to the top of the positioning rod (31), and the bottom of the fixing bolt (37) corresponds to the dial indicator (36).

5. The device for measuring the inner diameter of a vehicle ball cage as claimed in claim 2, characterized in that: The outer periphery of the positioning block (25) is rotatably connected to a plurality of rotating wheels (4), and the plurality of rotating wheels (4) are distributed around the center of the positioning block (25). The outer periphery of the extension rod (26) is rotatably sleeved with a contact ring (41).

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