Automatic replacement device for drill bit of drilling machine for oral cavity

Abstract

The utility model provides an automatic drill bit replacing device for an oral drilling machine, and relates to the field of oral cavities. The automatic replacing device for the drill bit of the drilling machine for the oral cavity comprises a placing base, a replacing groove is formed in the inner bottom wall of the placing base, a rubber pad is fixedly connected to the inner wall of the replacing groove, a through hole communicated with the interior of the placing base is formed in the left side of the placing base, and an ejector rod is movably connected to the interior of the through hole; and the right end of the ejector rod is fixedly connected with a positioning cover, and a soft cushion adheres to the inner wall of the positioning cover. According to the automatic replacement device for the drill bit of the drilling machine for the oral cavity, through mutual cooperation of the placing base, the replacement groove, a rubber pad, a handle, an ejector rod, a through hole, a spring, a fixing block, a soft pad, a positioning cover, a balance rod and a balance hole, the drill bit can be positioned in advance, and convenience is provided for replacement of the drill bit; the problem that a drill bit of an existing oral cavity drilling machine is basically replaced by holding the drill bit with one hand to be installed on the drilling machine, and once the drill bit falls off, the drill bit is prone to being damaged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cavity, in particular to an automatic replacement device for a drill bit of an oral cavity drill. Background Art

[0002] Electric dental drills are basic medical equipment in dentistry, mostly used for drilling and cutting of teeth, trimming and polishing of restorations, etc. They can also be used for periodontal surgery and alveolar surgery. The drill bit of an oral drill also needs to be replaced after long-term use. Currently, the drill bit of an oral drill is basically replaced by holding the drill bit in one hand to install it on the drill. Once the drill bit falls, it is easy to cause damage to the drill bit. Utility Model Content

[0003] The utility model aims to provide an automatic drill bit replacement device for an oral drill, which solves the problem that the current drill bit replacement for an oral drill basically requires one hand to hold the drill bit for installation on the drill, and once the drill bit falls, it is easy to cause damage to the drill bit.

[0004] Technical Solution

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic drill bit replacement device for an oral drill, comprising a placement seat, an inner bottom wall of the placement seat is provided with a replacement groove, the inner wall of the replacement groove is fixedly connected to a rubber pad, a through hole connected to the interior of the placement seat is provided on the left side of the placement seat, a push rod is movably connected to the interior of the through hole, the right end of the push rod is fixedly connected to a positioning cover, the inner wall of the positioning cover is bonded with a soft pad, the left end of the push rod is fixedly connected to a handle, the surface of the push rod is fixedly connected to a fixing block, the left side of the fixing block is fixedly connected to a spring, and the left end of the spring is fixedly connected to the left inner wall of the placement seat.

[0006] Furthermore, a balancing hole communicating with the interior of the placing seat is opened on the left side of the placing seat, a balancing rod is movably connected to the interior of the balancing hole, and one end of the balancing rod away from the balancing hole is fixedly connected to the surface of the positioning cover.

[0007] Furthermore, the number of the springs is two, and the two springs are symmetrically arranged about the central axis of the positioning cover.

[0008] Furthermore, there are two positioning covers, which are symmetrically arranged about the central axis of the placement seat.

[0009] The utility model provides an automatic drill bit replacement device for an oral drill. It has the following beneficial effects:

[0010] The automatic drill bit replacement device for an oral drill can pre-position the drill bit through the mutual cooperation between the placement seat, replacement groove, rubber pad, handle, push rod, through hole, spring, fixing block, soft pad, positioning cover, balance rod and balance hole, providing convenience for replacing the drill bit and solving the problem that the current drill bit replacement for an oral drill basically requires one to hold the drill bit on the drill rig with one hand to install it, which may easily cause damage to the drill bit if it falls. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a front view of the structure of the utility model.

[0013] Among them, 1 is a placement seat, 2 is a replacement slot, 3 is a rubber pad, 4 is a handle, 5 is a push rod, 6 is a through hole, 7 is a spring, 8 is a fixing block, 9 is a soft pad, 10 is a positioning cover, 11 is a balance rod, and 12 is a balance hole. DETAILED DESCRIPTION

[0014] like Figure 1-2 As shown, the embodiment of the present invention provides an automatic drill bit replacement device for an oral drill, comprising a placement seat 1, an inner bottom wall of the placement seat 1 is provided with a replacement groove 2, an inner wall of the replacement groove 2 is fixedly connected to a rubber pad 3, a through hole 6 connected to the interior of the placement seat 1 is provided on the left side of the placement seat 1, a push rod 5 is movably connected inside the through hole 6, a positioning cover 10 is fixedly connected to the right end of the push rod 5, a balancing hole 12 connected to the interior of the placement seat 1 is provided on the left side of the placement seat 1, a balancing rod 11 is movably connected inside the balancing hole 12, and a balance rod 11 is movably connected to the balance hole 12. One end of the balance rod 11 away from the balancing hole 12 is fixedly connected to the surface of the positioning cover 10, and a soft pad 9 is bonded to the inner wall of the positioning cover 10. There are two positioning covers 10, and the two positioning covers 10 are symmetrically arranged with the central axis of the placement seat 1. The left end of the top rod 5 is fixedly connected to the handle 4, and the surface of the top rod 5 is fixedly connected to the fixed block 8. The left side of the fixed block 8 is fixedly connected to the spring 7. There are two springs 7, and the two springs 7 are symmetrically arranged with the central axis of the positioning cover 10. The left end of the spring 7 is fixedly connected to the left inner wall of the placement seat 1.

[0015] Working principle: Pull the two handles 4 in opposite directions to place the drill bit into the replacement slot 2, then release the two handles 4. At this time, the spring 7 uses elastic force to push the two positioning covers 10 to move relative to each other and clamp the drill bit. Then the drill bit mounting hole of the drill rig can be clamped into the drill bit mounting end. After the installation is completed, pull the two handles 4 apart again to complete the drill bit replacement and installation.

Claims

1. An automatic drill bit replacement device for an oral drill, comprising a placement seat (1), characterized in that: The inner bottom wall of the placement seat (1) is provided with a replacement groove (2), the inner wall of the replacement groove (2) is fixedly connected to a rubber pad (3), the left side of the placement seat (1) is provided with a through hole (6) connected to the inside of the placement seat (1), the inside of the through hole (6) is movably connected to a push rod (5), the right end of the push rod (5) is fixedly connected to a positioning cover (10), the inner wall of the positioning cover (10) is bonded with a soft pad (9), the left end of the push rod (5) is fixedly connected to a handle (4), the surface of the push rod (5) is fixedly connected to a fixing block (8), the left side of the fixing block (8) is fixedly connected to a spring (7), and the left end of the spring (7) is fixedly connected to the left inner wall of the placement seat (1).

2. The automatic drill bit replacement device for an oral drill according to claim 1, characterized in that: A balancing hole (12) communicating with the interior of the placing seat (1) is provided on the left side of the placing seat (1); a balancing rod (11) is movably connected to the interior of the balancing hole (12); and one end of the balancing rod (11) away from the balancing hole (12) is fixedly connected to the surface of the positioning cover (10).

3. The automatic drill bit replacement device for an oral drill according to claim 1, characterized in that: The number of the springs (7) is two, and the two springs (7) are symmetrically arranged about the central axis of the positioning cover (10).

4. The automatic drill bit replacement device for an oral drill according to claim 1, characterized in that: The number of the positioning covers (10) is two, and the two positioning covers (10) are symmetrically arranged about the central axis of the placement seat (1).

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