CN202199801U - a hole opener - Google Patents

Abstract

The utility model discloses a hole digger, including rotary nozzle handle, drill bit main part and central brill, drill bit main part middle part is equipped with a mounting hole, and this mounting hole is connected with rotary nozzle handle periphery interference, and the central brill passes the drill bit main part and installs in the rotary nozzle handle front portion. The utility model discloses in, the drill bit main part adopts interference fit to be connected in order to compress tightly together with the rotary nozzle handle, and its simple structure is reasonable, and after the one shot forming, just difficult not hard up, fixed effectual can guarantee permanent life, offers convenience for the user.

Description

a hole opener

technical field

The utility model relates to an automobile accessory, in particular to a hole opener for a parking radar. the

Background technique

The existing reversing radar hole saw has a structure comprising a drill body, a center drill is arranged in front of the drill body, and a swivel handle is provided at the rear, wherein the drill body and the center drill are all mounted on the swivel handle by threads , and due to the rotation of the hole opener when it is working, the drill bit and the center drill are subjected to circumferential rotation force, which will loosen after long-term use and easily cause failure. It can be seen that its structure is not reasonable enough and it is inconvenient to use. the

Utility model content

In view of the above problems, the utility model provides a hole saw with reasonable structure, good fixing effect of the drill bit and the center drill, and can ensure that the drill does not become loose after long-term use. the

The technical scheme that the utility model solves its technical problem adopts is:

A hole opener, comprising a nozzle handle, a drill body and a center drill. A mounting hole is provided in the middle of the drill body. The installation hole is in interference connection with the periphery of the nozzle handle. The center drill passes through the drill body and is installed on the front of the nozzle handle. .

Further, a fixed hole is provided at the front of the nozzle handle, and the center drill is inserted into the fixed hole. the

Further, the outer wall of the nozzle handle is provided with a pressed concave, and the center drill is pressed and fixed by the concave. the

Beneficial effects of the utility model: In the utility model, the main body of the drill bit and the nozzle handle are connected by interference fit to be pressed together. The structure is simple and reasonable. In addition, the center drill can be inserted and fixed on the nozzle handle, and a concave can be pressed during assembly to tighten the center drill. The process is simple and the structure is firm and reliable. the

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following will briefly describe the accompanying drawings that are used in the description of the embodiments. Apparently, the drawings described are only a part of the embodiments of the utility model, rather than all the embodiments. Those skilled in the art can also obtain other design schemes and drawings based on these drawings without creative work. :

Fig. 1 is the sectional structural representation of the utility model;

Fig. 2 is a schematic diagram of the split structure of the utility model.

Detailed ways

In the following, the conception, specific structure and technical effects of the present utility model will be clearly and completely described in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without paying creative efforts, All belong to the protection scope of the utility model. the

With reference to Fig. 1, Fig. 2, a kind of hole opener provided by the utility model includes the nozzle handle 1, the drill bit main body 2 and the center drill 3, and the middle part of the drill bit main body 2 is provided with a mounting hole 21, and the mounting hole 21 is connected with the rotary nozzle The outer circumference of the shank 1 is connected by interference, so that the drill body 2 and the shank 1 of the rotator are fixed together, and the center drill 3 passes through the body 1 of the shank and is installed on the front of the shank 1 of the shank; There is a fixed hole 11, and the center drill 3 is inserted into the fixed hole 11. Of course, the scheme of screw connection or adding a pin can also be used for positioning; in a preferred embodiment of the utility model, the center drill 3 3 and the fixed hole 11 can also adopt interference fit, so that there is no problem of easy loosening of the selection caused by thread fit, and there will be no more scattered parts due to the addition of positioning pins; among them, the nozzle handle 1 The outer wall is provided with a pressed concave 12. Since the center drill 3 is inserted into the fixed hole 11, the concave 12 is further pressed inward to shrink the fixed hole 11 during the compression molding process, and then can be compressed and fixed. Hold the center drill 3 so that the center drill 3 can bear a greater force. the

Compared with the traditional hole opener, the utility model only needs to fix the drill body 2 on the nozzle handle 1 through the installation hole 21 when assembling, so that the interference fit can be positioned, and then the center drill 3 is installed into the rotor. In the fixed hole 11 of the nozzle handle 1, a concave 12 can be pressed on the outer wall of the nozzle handle 1 by a machine tool or an attack to fix the center drill 3, that is, the overall assembly of the hole saw is completed, and its parts are scattered Less, the assembly process is simple, the bearing capacity is strong, the use effect is good, and it can ensure that it will not loosen after long-term use. the

Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art can also make equivalent modifications or replacements without violating the spirit of the present utility model. These equivalent modifications or replacements are all included in the claims of this application. within the limited range. the

Claims (3)

1. A hole saw, including a nozzle handle (1), a drill body (2) and a center drill (3), characterized in that: a mounting hole (21) is provided in the middle of the drill body (2), and the installation The hole (21) is in interference connection with the outer periphery of the nozzle handle (1), and the center drill (3) passes through the drill body (1) and is installed on the front part of the nozzle handle (1). 2. A hole saw according to claim 1, characterized in that: the front part of the nozzle handle (1) is provided with a fixed hole (11), and the center drill (3) is inserted into the fixed hole bit(11). 3. A hole opener according to claim 2, characterized in that: the outer wall of the nozzle handle (1) is provided with a pressed concave (12), and the center drill (3) is formed by the concave (12) COMPRESSION FIXED.

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