Disc-shaped tool head shield

Abstract

The utility model relates to a disc-shaped tool head shield, and belongs to the technical field of electric tools. The disc-shaped tool head shield comprises a crescent shield body, the inner sides of the two ends of the shield body are respectively provided with a clamping groove matched with a convex rib on the corresponding portion of a machine shell, and a transition inclined face is arranged between a clamping opening of each clamping groove and the end of the shield body. When the shield body is installed on the casing, the shield body is pushed to the casing, the transition inclined surface enables the shield body to be expanded and elastically deformed until the clamping groove is aligned with a corresponding convex rib of the casing, and then the convex rib is clamped into the clamping groove under the action of elastic recovery of the shield body, so that the shield is conveniently clamped on the casing. According to the utility model, the strength of the casing can be ensured, and the placement space of the tool head can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of rotary electric tools, especially an improvement of disc-shaped tool head shield structure, belong to electric tool technical field. BACKGROUND

[0002] Electric tools such as electric sander have disc-shaped tool heads, and in order to ensure safety in use, these disc-shaped tool heads are all equipped with shields or covering devices. The shield of the prior art is disclosed in Chinese patent document No. 201780023064.5, which contains at least one protective wall having at least one notch with respect to the main working direction and / or the at least one transverse working direction, and the disc-shaped tool freely extends beyond the outer peripheral contour of the covering mechanism in the area of the machining surface through the at least one notch with the side edge area, so that the extension of the machining surface of the disc-shaped tool until the edge section or corner area of the side edge area is not hindered by the at least one protective wall for the machining of the edge side of the workpiece surface. The connection structure of the covering device and the casing is characterized in that the shield has a protrusion, and the casing has a groove for clamping the protrusion. Practice shows that this structure is not conducive to ensuring the installation space of the disc-shaped tool head, and the strength of the casing is weakened. SUMMARY

[0003] The utility model aims at the shortcomings of the prior art, and proposes a disc-shaped tool head shield that can ensure the strength of the casing and save internal space through structural improvement.

[0004] To achieve the above purpose, the basic technical scheme of the disc-shaped tool head shield of the utility model is as follows: a crescent-shaped shield body is provided, and the inner side of both ends of the shield body has a clamping groove matched with a protrusion corresponding to the position of the casing. The clamping groove and the end of the shield body have a transition slope.

[0005] When the shield body is installed on the casing, it is only necessary to push the shield body towards the casing, and the transition slope will cause the shield body to be elastically deformed until the clamping groove is aligned with the corresponding protrusion of the casing. Then, under the action of elastic recovery of the shield body, the protrusion is clamped in the clamping groove, so that the shield is conveniently clamped on the casing. It is not difficult to understand that, since the casing of the electric tool adopting the utility model does not need to be cut to form an inner recess structure, but a protrusion is formed on the periphery of the casing at the installation position of the disc-shaped tool head, the strength of the casing is ensured, and the installation space of the tool head is also ensured.

[0006] Further improvement of the utility model is that the casing is composed of a left half-casing and a right half-casing which are respectively in the shape of a semicircle.

[0007] The further improvement of the utility model is that the left and right half shells are respectively provided with positioning flanges at the joint, and the two positioning flanges are fixedly connected through the penetrating fasteners.

[0008] The further improvement of the utility model is that the cover body is correspondingly provided with a positioning recess matched with the positioning flange.

[0009] The further improvement of the utility model is that the middle part of the rib extends a rib ring along the circumference of the shell, and the corresponding part of the cover body is provided with a rib groove matched with the rib ring. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model will be further described in connection with the drawings.

[0011] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment one of the utility model.

[0012] Figure 2 is Figure 1 is a schematic diagram of the three-dimensional exploded structure of the embodiment.

[0013] Figure 3 is Figure 1 is a schematic diagram of the three-dimensional structure of the cover in the embodiment from another perspective. DETAILED DESCRIPTION Embodiment one

[0014] The embodiment is a handheld electric sander, and the basic structure is shown in Figs. Figure 1 、 2 , 3, the cover body C is crescent-shaped, and the inner sides of the two ends are respectively provided with clamping grooves C1 matched with the rib S1 of the corresponding part of the shell S, and the clamping grooves C1 and the end of the cover body are provided with a transition inclined surface C2.

[0015] More specifically, the shell S is composed of the joint left and right half shells SL and SR which are respectively semicircular, the joint of the left and right half shells SL and SR is respectively provided with a positioning flange S2, and the two positioning flanges S2 are fixedly connected through the penetrating bolts S3. The cover body C is correspondingly provided with a positioning recess C5 matched with the positioning flange S2, so that the assembly and positioning of the cover body C and the shell S are more favorable.

[0016] The middle part of the rib S1 extends a rib ring S4 along the circumference of the shell S, and the corresponding part of the cover body C is provided with a rib groove C4 matched with the rib ring S4, so that the cover body C and the shell S can be reliably limited when assembled.

[0017] When the cover is assembled to the casing, as long as the cover is pushed to the casing, the transition slope will make the cover be elastically deformed, the positioning flange gradually enters the positioning recess, the ring gradually enters the rib groove, until the clamping groove is aligned with the corresponding rib of the casing, under the action of the elastic recovery of the cover, the rib is clamped in the clamping groove, so that the cover is reliably clamped to the casing.

[0018] Practice shows that the hand-held electric sander of the embodiment is not only convenient, stable and reliable in assembling the cover to the casing, but also has high casing strength and sufficient tool head installation space.

[0019] In addition to the above embodiments, the utility model can also have other implementation manners. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. A tool head shroud of disc shape comprising a crescent-shaped shroud body, characterized in that: The two ends of the cover body have clamping grooves corresponding to the convex ribs of the corresponding parts of the casing.

2. The disc-shaped tool head shroud of claim 1, wherein: The casing is composed of a left half-shell and a right half-shell which are respectively semicircular.

3. The disc-shaped tool head shroud of claim 2, wherein: The left and right half-shells have positioning flanges at their joint, and the two positioning flanges are fixed by a fastener.

4. The disc-shaped tool head shroud of claim 3, wherein: The cover body has positioning recesses corresponding to the positioning flanges.

5. A disc-shaped tool head shroud according to claim 1, 2 or 3, characterized in that: The middle part of the convex rib extends a rib ring along the circumference of the casing, and the corresponding part of the cover body has a rib groove corresponding to the rib ring.

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