Casing structure of electric tool

Abstract

The utility model discloses an electric tool casing structure, which is characterized in that a support ring is arranged in a casing, two groups of screw holes distributed along the circumference of the axis of the support ring are arranged on the casing, the casing is divided into outer screw holes and inner screw holes according to the distance from the axis, any outer screw hole and the adjacent inner screw hole are not positioned on the same diameter, and the outer screw hole and the adjacent inner screw hole are not positioned on the same diameter. And the included angle is between 5 degrees and 15 degrees. According to the utility model, through the ingenious design of the structure, the structural strength of the casing can be ensured, the heat dissipation effect can be improved, the grooving depth can be improved, and interference and collision with the surface can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, and in particular relates to a casing structure of an electric tool. Background Art

[0002] Power tools are tools that use a transmission mechanism to drive a working head to work. Currently, there are many types of power tools that can handle a variety of tasks, greatly reducing the labor of workers and improving labor efficiency.

[0003] The current slotting cutting machine casing has insufficient heat dissipation capacity, and there is a risk of overheating after long-term operation. To this end, either reduce the power of the motor or reduce the speed. In addition, the cutting depth of the slotting machine is limited by the casing. When the cutting is too deep, the casing will collide with the cutting surface, causing interference collision. In order to increase the cutting depth, the casing needs to be redesigned and rectified.

[0004] Therefore, a structural design is needed that can not only ensure the structural strength of the casing, but also improve the heat dissipation effect and increase the groove depth. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides an electric tool casing structure. By cleverly designing the structure, the strength of the casing structure can be ensured, the heat dissipation effect can be improved, and the groove depth can be increased to avoid interference and collision with the surface.

[0006] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: an electric tool housing structure, a support ring is arranged inside the housing, and two groups of screw holes are arranged on the housing and distributed along the circumference of the axis of the support ring, which are divided into external screw holes and internal screw holes according to the distance from the axis. Any external screw hole and the adjacent internal screw hole are not on the same diameter, and the included angle is a.

[0007] In the above technical solution, preferably, the angle a is between 5 degrees and 15 degrees.

[0008] In the above technical solution, preferably, an axial hole is provided in the center of the support ring, a radiating rib is provided on the outer edge of the support ring, and the other end of the radiating rib is connected to the inner wall of the casing; the space between the radiating rib, the support ring and the inner wall of the casing forms a ventilation hole.

[0009] In the above technical solution, preferably, the casing is provided with a plurality of vertical limiting ribs arranged around the circumference, and the limiting ribs are used to clamp the stator and enhance the strength of the casing.

[0010] In the above technical solution, preferably, the number of the radiation ribs is an even number, preferably six.

[0011] The utility model provides an electric tool casing structure, which can ensure the casing structural strength and improve the heat dissipation effect through cleverly designed structure, and can also increase the groove depth to avoid interference and collision with the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the screw hole arrangement of the casing structure of the old technology.

[0014] Figure 2 It is a schematic diagram of the screw hole arrangement of the casing structure of the utility model.

[0015] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0016] Figure 4 yes Figure 2 Cross-sectional view along the BB direction.

[0017] In the figure: housing 1, outer screw hole 2, inner screw hole 3, support ring 4, shaft hole 41, radiation rib 42, ventilation hole 43. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments described in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] As attached Figure 1 The existing housing structure is shown in the figure. The two sets of threaded holes inside and outside the housing are on the same straight line, which wastes the space of the housing and makes the housing thicker. The thicker the housing is, the greater the distance between the axis of the blade and the outer surface of the housing is, which means that the actual cutting distance of the blade is reduced. Moreover, the thicker the housing is, the poorer the heat dissipation capacity is. Figure 1 It can be seen that there are few heat dissipation measures, few heat dissipation holes, and it is not scientific.

[0020] like Figures 2 to 4As shown, the housing structure of the electric tool, a support ring 4 is arranged inside the housing 1, and the housing 1 is provided with two groups of screw holes distributed along the circumference of the axis of the support ring 4, which are divided into external screw holes 2 and internal screw holes 3 according to the distance from the axis, and any external screw hole 2 and the adjacent internal screw hole 3 are not on the same diameter, and the included angle is a. The included angle a is between 5 degrees and 15 degrees.

[0021] The device offsets the inner and outer sets of screw holes to reduce the distance between them, and finally reduces the thickness of the casing. This reduces the distance between the axis of the blade and the outer surface of the casing, which means that the actual cutting distance of the blade increases, thereby increasing the cutting depth.

[0022] In addition, an axial hole 41 is provided in the middle of the support ring 4. The axial hole 41 allows the shaft of the motor to pass through. Then, a radiation rib 42 is provided on the outer edge of the support ring 4, and the other end of the radiation rib 42 is connected to the inner wall of the housing 1; the space between the radiation rib 42, the support ring 4 and the inner wall of the housing 1 forms a ventilation hole 43. The structural design of the radiation rib 42 improves the strength of the housing of the device.

[0023] In order to further improve the strength of the casing, a plurality of vertical limiting ribs are arranged around the circumference of the casing 1 . These limiting ribs can be used to clamp the stator and also strengthen the strength of the casing 1 .

[0024] In addition, it is better to select an even number of radiation ribs 42 of the device. An even number of radiation ribs 42 is used so that there is a symmetrical radiation rib 42 in diameter, which can increase the strength of the housing. And the size of the radiation rib 42 can be appropriately reduced, thereby providing a larger heat dissipation space. Six ribs are preferred.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims, rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The housing structure of an electric tool is characterized by: A support ring (4) is arranged inside the housing (1), and the housing (1) is provided with two groups of screw holes distributed along the circumference of the axis of the support ring (4), which are divided into external screw holes (2) and internal screw holes (3) according to the distance from the axis. Any external screw hole (2) and the adjacent internal screw hole (3) are not on the same diameter, and the included angle is a.

2. The electric tool housing structure according to claim 1, characterized in that: The angle a is between 5 degrees and 15 degrees.

3. The electric tool housing structure according to claim 1, characterized in that: An axial hole (41) is provided in the middle of the support ring (4), a radiation rib (42) is provided on the outer edge of the support ring (4), and the other end of the radiation rib (42) is connected to the inner wall of the housing (1); a ventilation hole (43) is formed in the space between the radiation rib (42), the support ring (4) and the inner wall of the housing (1).

4. The electric tool housing structure according to claim 3, characterized in that: The casing (1) is provided with a plurality of vertical limiting ribs arranged in a circumferential manner, and the limiting ribs are used to clamp the stator and enhance the strength of the casing (1).

5. The electric tool housing structure according to claim 3, characterized in that: The number of the radiation ribs (42) is an even number.

6. The electric tool housing structure according to claim 5, characterized in that: The number of the radiation ribs (42) is six.

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