Multi-angle self-locking structure of angle grinder

Abstract

The utility model relates to electric tool technical field, especially a multi -angle self -locking structure of angle grinder, include: the casing and be used for installing angle grinder work department's machine head shell, machine head and casing can be separated setting, the machine head shell is opened in a plurality of locking grooves, locking mechanism is used for locking machine head with casing, including sliding plate, the sliding plate with the guide rod installed in the casing is sliding fit, one end on the sliding plate is fixed with the locking block that cooperates with locking groove, the other end on the sliding plate is fixed with the locating frame, auxiliary locking subassembly. The utility model's advantage lies in: single hand presses down and unlocks, loosens and is automatically locked, need not utilize the tool, and the adjustment is time -saving and laborsaving, the steel ball is embedded into the half -spherical groove and provides the pre -tightening force, and the slight deflection caused by vibration is restrained, secondly, avoid the situation that the automatic adjustment is caused by accidental accidental touch operating block when using, also avoid the situation that the child misoperation.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a multi-angle self-locking structure for an angle grinder. Background Technology

[0002] Angle grinders, as a common power tool, are widely used in metal processing, construction and decoration and other fields. They often need to adjust the angle of the working head (cutting disc / grinding disc) according to the needs of the operation. Traditional angle adjustment mechanisms mostly use bolt fastening. When adjustment is needed, tools are needed to loosen the bolts for adjustment. This can easily lead to instability when working at height or in a confined space.

[0003] To address this issue, this utility model proposes a multi-angle self-locking structure for an angle grinder. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a multi-angle self-locking structure for an angle grinder to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a multi-angle self-locking structure for an angle grinder, comprising: a housing and a head housing for mounting the working part of the angle grinder, wherein the head housing and the housing are separable, and the head housing has a plurality of locking grooves; a locking mechanism for locking the head housing and the housing, comprising a sliding plate, the sliding plate being in sliding engagement with a guide rod installed in the housing, a locking block cooperating with the locking grooves being fixedly provided on one end of the sliding plate, and a positioning frame being fixedly provided on the other end of the sliding plate; and an auxiliary locking component for providing additional locking force between the head housing and the housing.

[0007] Preferably, in any of the above embodiments, the housing is composed of two identical first half-shells that are detachably connected. The top of the first half-shell is fixedly provided with a first convex ring and a second convex ring that are spaced apart, and a first annular groove is formed between the first convex ring and the second convex ring.

[0008] Preferably, in any of the above embodiments, the second convex ring is provided with a plurality of slots, which are evenly distributed along the circumference of the second convex ring.

[0009] Preferably, in any of the above embodiments, the head shell is composed of two identical second half shells that are detachably connected. The ends of the second half shells are fixedly provided with a third convex ring and a fourth convex ring that are spaced apart. The third convex ring is rotatably connected to the first ring groove.

[0010] Preferably, in any of the above embodiments, a second annular groove is formed between the third convex ring and the second half-shell, and the first convex ring is rotatably connected to the second annular groove; a third annular groove is formed between the third convex ring and the fourth convex ring, and the second convex ring is rotatably connected to the third annular groove; a plurality of hemispherical grooves are formed in the third annular groove, and the hemispherical grooves are evenly distributed along the circumference of the third annular groove.

[0011] Preferably, in any of the above solutions, a first fixing block and a second fixing block are installed inside the positioning frame, and both the first fixing block and the second fixing block are provided with inclined surfaces.

[0012] Preferably, as described in any of the above embodiments, the locking mechanism further includes: an operating block, slidably mounted on the housing, with a baffle fixedly mounted on the operating block, and a circular hole at the bottom of the operating block; a drive plate, fixedly mounted on the operating block, with a through groove on the drive plate, a first drive block for cooperating with a first fixed block fixedly mounted at one end of the drive plate, and a second drive block for cooperating with a second fixed block fixedly mounted at the other end of the drive plate; and a first spring, one end of which is fixedly mounted on a horizontal plate inside the housing, and the other end of which is mounted in the circular hole.

[0013] Preferably, any of the above solutions includes several sets of auxiliary locking components, evenly distributed in the slot. Each set of auxiliary locking components includes: a steel ball, which is slidably disposed in the slot to engage with the hemispherical groove; and a second spring, one end of which is fixedly installed in the slot, and the other end of which is fixedly connected to the steel ball.

[0014] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0015] 1. Unlock with one hand by pressing down, and lock automatically when released. No tools are needed, making adjustment time-saving and labor-saving.

[0016] 2. The steel ball embedded in the hemispherical groove provides preload, suppressing micro-deflection caused by vibration. Secondly, it avoids accidental activation of the operating block during use, preventing automatic adjustment, and also prevents accidental operation by children.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0020] Figure 2This is a partial schematic diagram according to an embodiment of the present utility model;

[0021] Figure 3 This is a partially disassembled schematic diagram according to an embodiment of the present utility model;

[0022] Figure 4 This is a partial cross-sectional schematic diagram according to an embodiment of the present utility model;

[0023] Figure 5 According to the embodiments of this utility model Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram of the locking mechanism according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the sliding plate connection according to an embodiment of the present utility model;

[0026] Figure 8 This is a schematic diagram of the positioning frame connection according to an embodiment of the present utility model;

[0027] Figure 9 This is a schematic cross-sectional view of the operating block according to an embodiment of the present utility model;

[0028] Figure 10 According to the embodiments of this utility model Figure 9 Enlarged diagram of point B in the middle.

[0029] In the diagram: 1. Housing, 11. First half-shell, 12. First convex ring, 13. Second convex ring, 2. Head housing, 21. Second half-shell, 22. Third convex ring, 23. Fourth convex ring, 3. Locking mechanism, 31. Sliding plate, 32. Locking block, 33. Positioning frame, 33301. First fixing block, 3302. Second fixing block, 34. Operating block, 3401. Baffle, 35. Drive plate, 3501. First drive block, 3502. Second drive block, 36. First spring, 4. Auxiliary locking assembly, 41. Steel ball, 42. Second spring. Detailed Implementation

[0030] like Figures 1 to 10 As shown, a multi-angle self-locking structure for an angle grinder includes a housing 1, a head housing 2, a locking mechanism 3, and an auxiliary locking component 4.

[0031] Furthermore, the housing 1 is composed of two identical first half-shells 11 that are detachably connected. The top of the first half-shell 11 is fixedly provided with a first protruding ring 12 and a second protruding ring 13 that are spaced apart, and a first annular groove is formed between the first protruding ring 12 and the second protruding ring 13.

[0032] The second convex ring 13 has a plurality of slots, which are evenly distributed along the circumference of the second convex ring 13.

[0033] Furthermore, the head shell 2 is detachably connected to the housing 1 for mounting the angle grinder working part. The head shell 2 is composed of two identical second half shells 21 that are detachably connected. The ends of the second half shells 21 are fixedly provided with a third convex ring 22 and a fourth convex ring 23 that are spaced apart. The third convex ring 22 is rotatably connected to the first ring groove.

[0034] A second annular groove is formed between the third protruding ring 22 and the second half-shell 21, and the first protruding ring 12 is rotatably connected to the second annular groove;

[0035] A third annular groove is formed between the third convex ring 22 and the fourth convex ring 23. The second convex ring 13 is rotatably connected to the third annular groove. A plurality of hemispherical grooves are formed in the third annular groove, and the hemispherical grooves are evenly distributed along the circumference of the third annular groove.

[0036] The working part of the angle grinder is the core component that directly participates in cutting, grinding and other operations, and mainly includes a motor, gearbox and cutting disc.

[0037] Furthermore, the locking mechanism 3 is used to lock the machine head to the machine housing 1, including a sliding plate 31, which is in sliding cooperation with a guide rod installed inside the machine housing 1. A locking block 32 that cooperates with the locking groove is fixedly provided on one end of the sliding plate 31, and a positioning frame 33 is fixedly provided on the other end of the sliding plate 31.

[0038] The positioning frame 33 is equipped with a first fixing block 3301 and a second fixing block 3302. Both the first fixing block 3301 and the second fixing block 3302 are provided with inclined surfaces, and the first fixing block 3301 and the second fixing block 3302 are distributed vertically.

[0039] The locking mechanism 3 also includes:

[0040] An operating block 34 is slidably mounted on the housing 1. A baffle 3401 is fixedly mounted on the operating block 34. A round hole is provided at the bottom of the operating block 34. The baffle 3401 is used to limit the operating block 34.

[0041] A drive plate 35 is fixedly mounted on an operating block 34. The drive plate 35 is provided with a through slot. A first drive block 3501 for cooperating with a first fixed block 3301 is fixedly mounted on one end of the drive plate 35, and a second drive block 3502 for cooperating with a second fixed block 3302 is fixedly mounted on the other end of the drive plate 35. The through slot is provided for the first fixed block 3301 to pass through and drive the first fixed block 3301 to move during the reset process of the drive plate 35.

[0042] The first spring 36 has one end fixedly mounted on the horizontal plate inside the housing 1, and the other end mounted in the round hole;

[0043] The circular hole on the operating block 34 allows the first spring 36 to be contained within the circular hole when it is compressed.

[0044] Furthermore, the auxiliary locking component 4 is used to provide additional locking force between the head housing 2 and the housing 1. Several sets of the auxiliary locking components 4 are evenly distributed within the slots. Each set of the auxiliary locking components 4 includes:

[0045] Steel ball 41 is slidably disposed in the slot to fit the hemispherical groove;

[0046] The second spring 42 has one end fixedly installed in the slot, and the other end fixedly attached to the steel ball 41.

[0047] In the above, both the first spring 36 and the second spring 42 can be replaced by a spring plate.

[0048] A multi-angle self-locking structure for an angle grinder, the working principle of which is as follows:

[0049] When adjusting the angle of the head housing 2:

[0050] First, press the operating block 34. The operating block 34 drives the drive plate 35 to move. The drive plate 35 drives the first drive block 3501 and the second drive block 3502 on it to move. The first drive block 3501 moves away from the top of the first fixed block 3301. Simultaneously, the second drive block 3502 moves closer to the bottom of the second fixed block 3302. The second drive block 3502 drives the second fixed block 3302 to move. Simultaneously, the fixed frame and the sliding plate 31 move. The sliding plate 31 drives the locking block 32 to disengage from the locking groove, releasing the lock between the housing 1 and the head housing 2.

[0051] Rotate the machine head shell 2 to adjust the angle. During the rotation of the machine head shell 2, the steel ball 41 changes from being embedded in the hemispherical groove to being detached from the hemispherical groove. The steel ball 41 is forced to move into the groove and squeeze the second spring 42. This process provides a certain resistance to the rotation of the machine head shell 2. When the groove aligns with the position of the hemispherical groove again, the second spring 42 is no longer under force, pushing the steel ball 41 into the hemispherical groove and producing a "click" sound.

[0052] After the angle adjustment is completed, the operating block 34 is released. Under the action of the first spring 36, the operating block 34 is driven to reset, so that the first driving block 3501 drives the first fixed block 3301 to move, pushing the locking block 32 into the locking slot to complete the locking.

Claims

1. A multi-angle self-locking structure for an angle grinder, characterized in that: include: The machine housing and the head housing for mounting the working part of the angle grinder, wherein the head housing and the machine housing are separable, and the head housing is provided with several locking grooves; A locking mechanism for locking the machine head to the machine housing includes a sliding plate, which is in sliding engagement with a guide rod installed inside the machine housing. A locking block that engages with a locking groove is fixedly provided on one end of the sliding plate, and a positioning frame is fixedly provided on the other end of the sliding plate. An auxiliary locking component is used to provide additional locking force between the head housing and the housing.

2. The multi-angle self-locking structure of an angle grinder according to claim 1, characterized in that: The housing is composed of two identical first half-shells that are detachably connected. The top of the first half-shell is fixedly provided with a first convex ring and a second convex ring that are spaced apart, and a first annular groove is formed between the first convex ring and the second convex ring.

3. The multi-angle self-locking structure of an angle grinder according to claim 2, characterized in that: The second convex ring has a plurality of slots, which are evenly distributed along the circumference of the second convex ring.

4. The multi-angle self-locking structure of an angle grinder according to claim 3, characterized in that: The head shell is composed of two identical second half shells that are detachably connected. The ends of the second half shells are fixedly provided with a third convex ring and a fourth convex ring that are spaced apart. The third convex ring is rotatably connected to the first ring groove.

5. The multi-angle self-locking structure of an angle grinder according to claim 4, characterized in that: A second annular groove is formed between the third convex ring and the second half-shell, and the first convex ring is rotatably connected to the second annular groove; A third annular groove is formed between the third convex ring and the fourth convex ring. The second convex ring is rotatably connected to the third annular groove. A plurality of hemispherical grooves are formed in the third annular groove, and the hemispherical grooves are evenly distributed along the circumference of the third annular groove.

6. The multi-angle self-locking structure of an angle grinder according to claim 1, characterized in that: The positioning frame is equipped with a first fixing block and a second fixing block, both of which have inclined surfaces.

7. The multi-angle self-locking structure of an angle grinder according to claim 6, characterized in that: The locking mechanism also includes: An operating block is slidably mounted on the machine housing, a baffle is fixedly mounted on the operating block, and a round hole is opened at the bottom of the operating block; A drive plate is fixedly mounted on an operating block. The drive plate is provided with a through slot. A first drive block for cooperating with a first fixed block is fixedly mounted on one end of the drive plate, and a second drive block for cooperating with a second fixed block is fixedly mounted on the other end of the drive plate. The first spring has one end fixedly mounted on a horizontal plate inside the housing, and the other end mounted in a round hole.

8. The multi-angle self-locking structure of an angle grinder according to claim 5, characterized in that: The auxiliary locking components are provided in several groups, evenly distributed in the slots. Each group of auxiliary locking components includes: Steel balls are slidably disposed within the slot to fit into the hemispherical groove; The second spring has one end fixedly installed in the slot, and the other end fixedly connected to the steel ball.

Images