CN212285886U

CN212285886U - Main shaft self-locking mechanism of gun drill

Info

Publication number: CN212285886U
Application number: CN202020805205.8U
Authority: CN
Inventors: 张飞; 朱志鹏; 周康
Original assignee: Jiangsu Jinding Electric Appliance Co ltd
Current assignee: Jiangsu Jinding Electric Appliance Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-01-05
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a main shaft self-locking mechanism of gun drill has planet carrier, kingpin, retainer plate, driving disk and main shaft, the driving disk assemble in the retainer plate, the kingpin assemble the fit clearance department of driving disk and retainer plate, the planet carrier assemble the cooperation breach department of driving disk and retainer plate, the main shaft install in the hole of driving disk, the driving disk on seted up the annular, the flexible buffering circle has been packed into in this annular, the lateral wall of flexible buffering circle paste the hole in the planet carrier tightly. The buffering structure is added in the main shaft self-locking mechanism, so that the noise generated when the gun drill is braked can be effectively reduced or even eliminated.

Description

Main shaft self-locking mechanism of gun drill

Technical Field

The utility model belongs to the technical field of the technique of gun drill and specifically relates to a main shaft self-locking mechanism of gun drill.

Background

The electric tool has the characteristics of complete functions, convenience in carrying, simplicity in use and the like, is widely applied in various industries, enters families, and becomes a necessary tool for production and life. At present, a gun drill is one of products with larger sales volume in the industry of electric tools, and is widely applied to the industries of buildings, decorations, furniture and the like for drilling, screwing or perforating objects on objects. Most gun drills are provided with self-locking mechanisms, however, the existing gun drill with the self-locking mechanism is high in noise and poor in use hand feeling during self-locking.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the main shaft self-locking mechanism of the gun drill is provided, and the buffer structure is added in the main shaft self-locking mechanism, so that the noise generated when the gun drill is braked can be effectively reduced or even eliminated.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a main shaft self-locking mechanism of gun drill, has planet carrier, kingpin, retainer plate, driving disc and main shaft, the driving disc assemble in the retainer plate, the kingpin assemble the fit clearance department of driving disc and retainer plate, the planet carrier assemble the cooperation breach department of driving disc and retainer plate, the main shaft install in the hole of driving disc, the driving disc on seted up the annular, this annular is packed into and is had flexible buffering circle, the lateral wall of flexible buffering circle paste in the hole of planet carrier tightly.

More specifically, in the above technical solution, the flexible buffer ring is a rubber ring.

More specifically, in the above technical solution, the planet carrier, the fixing ring and the driving disk are all in a step-like structure, the side wall of the large-diameter end in the driving disk contacts with the inner hole of the fixing ring, the side wall of the small-diameter end in the planet carrier contacts with the inner hole of the fixing ring, and the side wall of the small-diameter end in the driving disk contacts with the inner hole of the planet carrier.

More specifically, in the above technical solution, the step surface of the large diameter end of the planet carrier contacts with the end surface of the large diameter end of the fixed ring, and the end surface of the small diameter end of the planet carrier contacts with the step surface of the large diameter end of the driving disk.

More specifically, in the above technical solution, the inner hole of the driving disk is a flat shaft hole, and the assembling end of the main shaft is a flat shaft portion matched with the flat shaft hole.

The utility model has the advantages that: the utility model provides a pair of main shaft self-locking mechanism of gun drill through adding a flexible buffering circle in the driving disc outer lane, can effectual reduction eliminate the noise when gun drill brake even, and the gun drill reaches the small in noise and feels the effect when the auto-lock.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic view of the assembly of the planet carrier and the driving disk;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 4;

fig. 6 is an exploded view of fig. 1.

The reference numbers in the figures are: 1. a planet carrier; 2. rolling needles; 3. a stationary ring; 4. a flexible buffer ring; 5. a driving disk; 6. a main shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "one side", "the other side", "both sides", "between", "middle part", "upper end", "lower end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

See fig. 1 ~ 6, the utility model discloses a main shaft self-locking mechanism of gun drill, planet carrier 1 has, kingpin 2, retainer plate 3, drive plate 5 and main shaft 6, drive plate 5 assembles in retainer plate 3, kingpin 2 assembles the fit clearance department of drive plate 5 and retainer plate 3, planet carrier 1 assembles the cooperation breach department of drive plate 5 and retainer plate 3, main shaft 6 is installed in the hole of drive plate 5, the annular has been seted up on the drive plate 5, flexible buffer ring 4 has been packed into in this annular, the lateral wall of flexible buffer ring 4 pastes tightly in planet carrier 1's hole.

Wherein, the flexible buffer ring 4 is a rubber ring. Planet carrier 1, retainer plate 3 and drive plate 5 all are step-like structure, and the lateral wall of big diameter end contacts with the hole of retainer plate 3 in the drive plate 5, and the lateral wall of little diameter end contacts with the hole of retainer plate 3 in planet carrier 1, and the lateral wall of little diameter end contacts with the hole of planet carrier 1 in the drive plate 5. The step surface of the large-diameter end in the planet carrier 1 is in contact with the end surface of the large-diameter end in the fixed ring 3, and the end surface of the small-diameter end in the planet carrier 1 is in contact with the step surface of the large-diameter end in the driving disc 5. The inner hole of the driving disc 5 is a flat shaft hole, and the assembling end of the main shaft 6 is a flat shaft part matched with the flat shaft hole.

When the auto-lock, flexible buffering circle 4 can effectually play the effect of buffering, and the auto-lock principle is: when the gun drill is used, the switch button is released, the motor stops, the main shaft 6 has inertia for continuous rotation due to the inertia effect, the self-locking is that when the main shaft 6 rotates inertially, the driving disc 5 is driven to rotate, and when the driving disc 5 rotates along with the driving disc, the roller pin 2 blocks the driving disc 5 at the fixing ring 3 to complete the self-locking. Specifically, when the gun drill is subjected to self-locking, impact force is generated by the main shaft 6, the main shaft 6 transmits the impact force to the driving disc 5, the driving disc 5 transmits the impact force to the roller pins 2, the roller pins 2 transmit the impact force to the fixed ring 3 and the planet carrier 1, the fixed ring 3 is fixed, finally the planet carrier 1 and the fixed ring 3 reversely transmit the force to the driving disc 5, the roller pins 2 are clamped between the fixed ring 3 and the driving disc 5, and the main shaft 6 is clamped and stopped, so that the self-locking is completed. The driving disk 5 is subjected to a large force in the transmission of this force. The flexible buffer ring 4 is sleeved on the driving disc 5 and can absorb and buffer part of impact force between the driving disc 5 and the fixed ring 3 and between the driving disc 5 and the planet carrier 1, so that the gun drill with the self-locking mechanism achieves the effects of low noise and good hand feeling during self-locking.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a main shaft self-locking mechanism of gun drill, has planet carrier (1), kingpin (2), retainer plate (3), driving disk (5) and main shaft (6), driving disk (5) assemble in retainer plate (3), kingpin (2) assemble the fit clearance department of driving disk (5) and retainer plate (3), planet carrier (1) assemble the fit breach department of driving disk (5) and retainer plate (3), main shaft (6) install in the hole of driving disk (5), its characterized in that: the driving disc (5) is provided with a ring groove, a flexible buffer ring (4) is arranged in the ring groove, and the outer side wall of the flexible buffer ring (4) is attached to the inner hole of the planet carrier (1).

2. The self-locking mechanism of the main shaft of the gun drill according to claim 1, characterized in that: the flexible buffer ring (4) is a rubber ring.

3. The self-locking mechanism of the main shaft of the gun drill according to claim 1, characterized in that: planet carrier (1), retainer plate (3) and drive plate (5) all be step-like structure, drive plate (5) in the lateral wall of big diameter end contact with the hole of retainer plate (3), the lateral wall of planet carrier (1) in the small diameter end contacts with the hole of retainer plate (3), the lateral wall of drive plate (5) in the small diameter end contacts with the hole of planet carrier (1).

4. The self-locking mechanism of the main shaft of the gun drill according to claim 3, characterized in that: the step surface of the large-diameter end in the planet carrier (1) is in contact with the end surface of the large-diameter end in the fixed ring (3), and the end surface of the small-diameter end in the planet carrier (1) is in contact with the step surface of the large-diameter end in the driving disc (5).

5. The self-locking mechanism of the main shaft of the gun drill according to claim 1, characterized in that: the inner hole on the driving disc (5) is a flat shaft hole, and the assembling end of the main shaft (6) is a flat shaft part matched with the flat shaft hole.