A multi-layer positioning bushing structure for angle grinder
By designing a multi-layer positioning bushing structure and using the fixing mechanism of spring and insertion rod, the problem of the angle grinder bushing and the mounting seat is solved, and the stable installation and use of bushing is achieved.
Patent Information
- Application Number
- CN202420753692.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The existing angle grinder bushings are prone to rotate from the mounting base or even disengage after a long period of use, resulting in failure to use normally.
A multi-layer positioning bushing structure is designed, including a bushing body, a mount and a fixing device. The fixing device consists of two grooves, a spring, a plug rod and a socket. The plug rod is fixed in the socket through the resetting action of the spring, thereby achieving the fixing of the bushing and the mounting seat.
It effectively avoids the bushing rotating and disengaging from the mounting base under the drive of the rotating shaft, ensuring the stability and normal operation of the bushing during use.
Smart Images
Figure CN222711849U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of angle grinder bushings, in particular to a multi-layer positioning bushing structure for angle grinders. Background Art
[0002] An angle grinder, also known as a grinding machine or disc grinder, is a device used to cut and grind fiberglass. It is often used to cut, grind and grind metals and stones. When the angle grinder is in use, the motor shaft drives the grinding disc to rotate at high speed to grind the object. In order to reduce the wear of the shaft and the machine, a bushing is generally installed on the shaft to protect the machine.
[0003] In the prior art, after the bushing is used for a long time, the bushing is easily rotated with the mounting seat driven by the rotating shaft, and the bushing is even separated from the mounting seat, so that the bushing cannot be used normally. Utility Model Content
[0004] The utility model is to solve the shortcomings in the prior art and proposes a multi-layer positioning bushing structure for an angle grinder.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-layer positioning bushing structure for an angle grinder, comprising a bushing body, the arc surface of the bushing body is sleeved with a mounting seat, the arc surface of the bushing body is provided with a fixing device, the fixing device comprises two grooves, the two grooves are arranged on the arc surface of the bushing body, a spring is fixedly connected to the inner wall of the groove, one end of the spring is fixedly connected to a plug rod, a hole is arranged at the mounting seat corresponding to the plug rod, the size of the hole is adapted to the size of the plug rod, and a slope is arranged at the end of the plug rod away from the spring.
[0006] The effect achieved by the above-mentioned components is: when the bushing body needs to be installed, the bushing body is inserted into the interior of the mounting seat, the mounting seat squeezes the slope of the insertion rod, the insertion rod moves toward the inner wall of the groove, and the spring contracts. When the bushing body moves to the position of the mounting seat socket with the insertion rod, under the action of the spring return force, the insertion rod is inserted into the socket, thereby achieving the effect of fixing the bushing body and the mounting seat. The fixing device achieves the effect of fixing the bushing body and the mounting seat, thereby preventing the bushing body from rotating with the mounting seat driven by the internal rotating shaft, thereby causing the bushing body to separate from the mounting seat.
[0007] Preferably, two mutually symmetrical limiting rods are fixedly connected to the arc surface of the insert rod, limiting holes are formed in the groove corresponding to the limiting rods, and the size of the limiting rods matches the size of the limiting holes.
[0008] The effect achieved by the above components is: by moving the limiting rod of the insertion rod in the limiting hole of the groove, the moving direction of the insertion rod is limited, the rotation of the insertion rod is avoided, and the stability of the movement of the insertion rod is improved.
[0009] Preferably, two mutually symmetrical positioning holes are provided on the upper surface of the mounting seat, and positioning rods are fixedly connected to the bushing body at positions corresponding to the positioning holes, and the size of the positioning rods matches the size of the positioning holes.
[0010] The effect achieved by the above components is: by inserting the positioning rod of the bushing body into the positioning hole of the mounting seat, the movement direction of the bushing body is restricted, which facilitates the alignment of the insertion rod on the bushing body with the insertion hole of the mounting seat.
[0011] Preferably, a pointed protrusion is fixedly connected to one end of the positioning rod, and the tip of the pointed protrusion is away from the positioning rod.
[0012] The effect achieved by the above-mentioned components is that the positioning rod is easily inserted into the positioning hole by arranging the pointed protrusion, which brings convenience to the staff.
[0013] Preferably, a through hole is provided at the position corresponding to the groove of the bushing body, and two symmetrical placement grooves are provided on the upper surface of the bushing body. Both ends of the through hole are connected with the groove and the placement groove. A pull rope is provided inside the through hole, and one end of the pull rope is fixedly connected to the insertion rod.
[0014] The effect achieved by the above components is: when the bushing body needs to be replaced and disassembled, pull the pull rope in the through hole, and the pull rope will move the insertion rod out of the plug hole. At this time, the bushing body is pulled out of the mounting seat, thereby achieving the effect of disassembling the bushing body and bringing convenience to the staff.
[0015] Preferably, one end of the pull rope is fixedly connected to a pull ring, and the pull ring is located in the placement groove.
[0016] The effect achieved by the above components is: by providing a pull ring, the contact area between the staff's hand and the pull ring is increased, thereby facilitating the staff to move the pull rope, wherein the placement groove achieves the effect of hiding the pull ring.
[0017] Preferably, an auxiliary device is provided on the upper surface of the bushing body, and the auxiliary device includes an oil filling hole, and the oil filling hole is opened on the upper surface of the bushing body. An oil collecting groove is opened inside the bushing body, and the oil filling hole is connected with the oil collecting groove. A plurality of oil guide grooves are evenly opened on the inner wall of the bushing body, and the plurality of oil guide grooves are distributed in a circular shape, and one end of the oil guide groove is connected with the oil collecting groove.
[0018] The effect achieved by the above-mentioned components is: when lubrication is required between the bushing body and the rotating shaft, the lubricating oil is injected into the oil collecting groove through the oil filling hole, and then the lubricating oil slowly flows into the oil guide groove. When the rotating shaft rotates inside the bushing body, the lubricating oil in the oil guide groove flows to the surface of the rotating shaft, achieving the effect of lubricating between the bushing body and the rotating shaft. The effect of lubricating between the rotating shaft and the bushing body is achieved through the auxiliary device, thereby reducing the friction between the rotating shaft and the bushing body.
[0019] Preferably, the cross-section of the oil filling hole is funnel-shaped.
[0020] The effect achieved by the above components is: by setting the funnel-shaped oil filling hole, it is convenient for the staff to pour the lubricating oil into the oil collecting tank, which brings convenience to the staff.
[0021] In summary, the beneficial effects of the utility model are:
[0022] When the bushing body needs to be installed, the bushing body is inserted into the interior of the mounting seat, the mounting seat squeezes the slope of the insertion rod, the insertion rod moves toward the inner wall of the groove, the spring contracts, and when the bushing body moves to the position of the mounting seat socket with the insertion rod, under the action of the spring return elastic force, the insertion rod is inserted into the socket, thereby achieving the effect of fixing the bushing body and the mounting seat. The fixing device achieves the effect of fixing the bushing body and the mounting seat, thereby preventing the bushing body from rotating with the mounting seat driven by the internal rotating shaft, thereby causing the bushing body to separate from the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 It is a three-dimensional structural schematic diagram of the mounting seat of the utility model;
[0025] Figure 3 It is a three-dimensional structural schematic diagram of the bushing body of the utility model;
[0026] Figure 4 It is a side sectional view of the bushing body of the utility model;
[0027] Figure 5 For this utility model Figure 4 A magnified image of point A;
[0028] Figure 6 It is another side cross-sectional view of the bushing body of the utility model;
[0029] Figure 7 For this utility model Figure 6 Enlarged view of point B.
[0030] Legend: 1. Bushing body; 2. Mounting seat; 3. Fixing device; 31. Insert rod; 32. Groove; 33. Spring; 34. Plug hole; 35. Through hole; 36. Pull rope; 37. Pull ring; 38. Placement groove; 39. Limit rod; 310. Positioning rod; 311. Pointed protrusion; 312. Positioning hole; 4. Auxiliary device; 41. Oil filling hole; 42. Oil collecting groove; 43. Oil guide groove. DETAILED DESCRIPTION
[0031] Reference Figure 1-7 As shown, this embodiment discloses a multi-layer positioning bushing structure for an angle grinder, including a bushing body 1, a mounting seat 2 is sleeved on the arc surface of the bushing body 1, a fixing device 3 is provided on the arc surface of the bushing body 1, and an auxiliary device 4 is provided on the upper surface of the bushing body 1.
[0032] Reference Figure 1-7 As shown, the fixing device 3 includes two grooves 32, and the two grooves 32 are opened on the arc surface of the bushing body 1. The inner wall of the groove 32 is fixedly connected with a spring 33, and one end of the spring 33 is fixedly connected with an insertion rod 31. The mounting seat 2 is provided with a hole 34 corresponding to the insertion rod 31. The size of the hole 34 is adapted to the size of the insertion rod 31, and a slope is provided at one end of the insertion rod 31 away from the spring 33. When the bushing body 1 needs to be installed, the bushing body 1 is inserted into the interior of the mounting seat 2, the mounting seat 2 squeezes the slope of the insertion rod 31, the insertion rod 31 moves toward the inner wall direction of the groove 32, and the spring 33 contracts. When the bushing body 1 moves with the insertion rod 31 to the position of the insertion hole 34 of the mounting seat 2, under the action of the restoring elastic force of the spring 33, the insertion rod 31 is inserted into the insertion hole 34, thereby achieving the effect of fixing the bushing body 1 and the mounting seat 2. The fixing device 3 achieves the effect of fixing the bushing body 1 and the mounting seat 2, thereby preventing the bushing body 1 from rotating with the mounting seat 2 driven by the internal rotating shaft, thereby causing the bushing body 1 to separate from the mounting seat 2.
[0033] Reference Figure 1-7As shown, the arc surface of the plug rod 31 is fixedly connected with two mutually symmetrical limiting rods 39, and the groove 32 is provided with a limiting hole corresponding to the limiting rod 39, and the size of the limiting rod 39 is adapted to the size of the limiting hole. By moving the limiting rod 39 of the plug rod 31 in the limiting hole of the groove 32, the effect of limiting the moving direction of the plug rod 31 is achieved, the plug rod 31 is prevented from rotating, and the stability of the movement of the plug rod 31 is improved. The upper surface of the mounting seat 2 is provided with two mutually symmetrical positioning holes 312, and the bushing body 1 is fixedly connected with a positioning rod 310 at the corresponding positioning hole 312, and the size of the positioning rod 310 is adapted to the size of the positioning hole 312. By inserting the positioning rod 310 of the bushing body 1 into the positioning hole 312 of the mounting seat 2, the effect of limiting the moving direction of the bushing body 1 is achieved, and the insertion rod 31 on the bushing body 1 is conveniently aligned with the insertion hole 34 of the mounting seat 2. A sharp protrusion 311 is fixedly connected to one end of the positioning rod 310, and the tip of the sharp protrusion 311 is away from the positioning rod 310. The pointed protrusion 311 facilitates the insertion of the positioning rod 310 into the positioning hole 312, thus bringing convenience to the staff.
[0034] Reference Figure 1-7 As shown, a through hole 35 is provided at the position corresponding to the groove 32 of the bushing body 1, and two mutually symmetrical placement grooves 38 are provided on the upper surface of the bushing body 1. The two ends of the through hole 35 are connected with the groove 32 and the placement groove 38. A pull rope 36 is provided inside the through hole 35, and one end of the pull rope 36 is fixedly connected to the insertion rod 31. When the bushing body 1 needs to be replaced and disassembled, the pull rope 36 in the through hole 35 is pulled, and the pull rope 36 is moved out of the insertion hole 34 with the insertion rod 31. At this time, the bushing body 1 is pulled out from the mounting seat 2, so as to achieve the effect of disassembling the bushing body 1, which brings convenience to the staff. A pull ring 37 is fixedly connected to one end of the pull rope 36, and the pull ring 37 is located in the placement groove 38. By setting the pull ring 37, the contact area between the staff's hand and the pull ring 37 is increased, so as to facilitate the staff to move the pull rope 36, wherein the placement groove 38 achieves the effect of hiding the pull ring 37.
[0035] Reference Figure 1-7As shown, the auxiliary device 4 includes an oil injection hole 41, which is provided on the upper surface of the bushing body 1. An oil collecting groove 42 is provided inside the bushing body 1. The oil injection hole 41 is connected to the oil collecting groove 42. A plurality of oil guide grooves 43 are evenly provided on the inner wall of the bushing body 1. The plurality of oil guide grooves 43 are distributed in a circumference, and one end of the oil guide groove 43 is connected to the oil collecting groove 42. When lubrication is required between the bushing body 1 and the rotating shaft, the lubricating oil is injected into the oil collecting groove 42 through the oil injection hole 41, and then the lubricating oil slowly flows into the oil guide groove 43. When the rotating shaft rotates inside the bushing body 1, the lubricating oil in the oil guide groove 43 flows to the surface of the rotating shaft, achieving the effect of lubricating between the bushing body 1 and the rotating shaft. The auxiliary device 4 achieves the effect of lubricating between the rotating shaft and the bushing body 1, and reduces the friction between the rotating shaft and the bushing body 1. The cross section of the oil injection hole 41 is funnel-shaped. The funnel-shaped oil filling hole 41 is provided to facilitate the workers to pour the lubricating oil into the oil collecting tank 42, thereby bringing convenience to the workers.
[0036] Working principle: When the bushing body 1 needs to be installed, the bushing body 1 is inserted into the interior of the mounting seat 2, the positioning rod 310 of the bushing body 1 is aligned with the positioning hole 312 of the mounting seat 2, and the positioning rod 310 is inserted into the positioning hole 312 with the help of the sharp protrusion 311, so as to achieve the effect of limiting the movement direction of the bushing body 1. At this time, the mounting seat 2 squeezes the slope of the insertion rod 31, and the insertion rod 31 moves toward the inner wall direction of the groove 32, and the spring 33 contracts. When the bushing body 1 moves to the position of the insertion hole 34 of the mounting seat 2 with the insertion rod 31, under the action of the restoring elastic force of the spring 33, the insertion rod 31 is inserted into the insertion hole 3 4, the bushing body 1 and the mounting seat 2 are fixed. When the bushing body 1 needs to be replaced and disassembled, the pull rope 36 in the through hole 35 is pulled by the pull ring 37, and the pull rope 36 moves the insertion rod 31 out of the insertion hole 34. At this time, the bushing body 1 is pulled out from the mounting seat 2, which achieves the effect of disassembling the bushing body 1, bringing convenience to the staff. The bushing body 1 and the mounting seat 2 are fixed by the fixing device 3, which prevents the bushing body 1 from rotating with the mounting seat 2 under the drive of the internal rotating shaft, thereby causing the bushing body 1 to be separated from the mounting seat 2.
[0037] When lubrication is required between the bushing body 1 and the rotating shaft, the lubricating oil is injected into the oil collecting groove 42 through the oil filling hole 41, and then the lubricating oil slowly flows into the oil guide groove 43. When the rotating shaft rotates inside the bushing body 1, the lubricating oil in the oil guide groove 43 flows to the surface of the rotating shaft, thereby achieving the effect of lubricating the bushing body 1 and the rotating shaft. The auxiliary device 4 achieves the effect of lubricating the rotating shaft and the bushing body 1, thereby reducing the friction between the rotating shaft and the bushing body 1.
Claims
1. A multi-layer positioning bushing structure for an angle grinder, comprising a bushing body (1), characterized in that: The arc surface of the bushing body (1) is sleeved with a mounting seat (2), and the arc surface of the bushing body (1) is provided with a fixing device (3), and the fixing device (3) comprises two grooves (32), and the two grooves (32) are provided on the arc surface of the bushing body (1), and the inner walls of the grooves (32) are fixedly connected with springs (33), and one end of the spring (33) is fixedly connected with an insertion rod (31), and the mounting seat (2) is provided with an insertion hole (34) at a position corresponding to the insertion rod (31), and the size of the insertion hole (34) is matched with the size of the insertion rod (31), and the end of the insertion rod (31) away from the spring (33) is provided with a slope.
2. A multi-layer positioning bushing structure for an angle grinder according to claim 1, characterized in that: The arc surface of the insert rod (31) is fixedly connected to two mutually symmetrical limiting rods (39); limiting holes are provided in the groove (32) corresponding to the limiting rods (39); and the size of the limiting rods (39) matches the size of the limiting holes.
3. The multi-layer positioning bushing structure for an angle grinder according to claim 1, characterized in that: The upper surface of the mounting seat (2) is provided with two mutually symmetrical positioning holes (312), and the bushing body (1) is fixedly connected with a positioning rod (310) at a position corresponding to the positioning hole (312), and the size of the positioning rod (310) is adapted to the size of the positioning hole (312).
4. A multi-layer positioning bushing structure for an angle grinder according to claim 3, characterized in that: One end of the positioning rod (310) is fixedly connected to a pointed protrusion (311), and the tip of the pointed protrusion (311) is away from the positioning rod (310).
5. The multi-layer positioning bushing structure for an angle grinder according to claim 1, characterized in that: A through hole (35) is provided on the bushing body (1) at a position corresponding to the groove (32); two mutually symmetrical placement grooves (38) are provided on the upper surface of the bushing body (1); two ends of the through hole (35) are connected to the groove (32) and the placement groove (38); a pull rope (36) is provided inside the through hole (35); one end of the pull rope (36) is fixedly connected to the insertion rod (31).
6. A multi-layer positioning bushing structure for an angle grinder according to claim 5, characterized in that: One end of the pull rope (36) is fixedly connected to a pull ring (37), and the pull ring (37) is located in the placement groove (38).
7. A multi-layer positioning bushing structure for an angle grinder according to claim 1, characterized in that: An auxiliary device (4) is provided on the upper surface of the bushing body (1), and the auxiliary device (4) comprises an oil filling hole (41). The oil filling hole (41) is provided on the upper surface of the bushing body (1), and an oil collecting groove (42) is provided inside the bushing body (1). The oil filling hole (41) is connected to the oil collecting groove (42). A plurality of oil guide grooves (43) are evenly provided on the inner wall of the bushing body (1), and the plurality of oil guide grooves (43) are distributed in a circular shape, and one end of the oil guide groove (43) is connected to the oil collecting groove (42).
8. A multi-layer positioning bushing structure for an angle grinder according to claim 7, characterized in that: The cross section of the oil filling hole (41) is funnel-shaped.