TWM477359U - Self-locking cushion silencer - Google Patents

Description

Self-locking buffer silencer

The present invention relates to a self-locking buffer silencer, and more particularly to a technical field applied to power tools.

An output shaft is installed in the electric drill and the like, and an output shaft self-locking device is arranged on the output shaft. The conventional output shaft self-locking device includes a power output disc, a stop ring, a stop block and a self-locking pin, and the power output disc rear end is connected. Gear drive system, the stop block is connected to the output shaft, or the stop block is integrated with the output shaft. When the electric drill is in normal operation, the self-locking mechanism does not have the self-locking function. At this time, the power output disc drives the stopping block to rotate, the stopping block drives the output shaft to rotate, and the output shaft transmits the torque. However, there must be a loose clearance fit between the power output disc and the stop block, so that the self-locking mechanism can be mutually converted between the self-locking state and the normal transmission state, and the switching torque between the power output disc and the stop block is small. , close to zero, which is the shortcoming of the traditional output shaft self-locking device. The disadvantages of this shortcoming have the following two points: First, when the output shaft is not subjected to external force, when the electric drill suddenly stops during operation, the output shaft self-locking function acts, and the output shaft is stuck for a moment, due to There is a gap between the self-locking pin and the stop block and the stop ring, so that the user can hear the obvious "click" and "click" sound; second, when the electric drill is stopped suddenly, the chuck and the output shaft connected with the output shaft are The inertia will continue to rotate, and the self-locking function of the output shaft will suddenly act. The chuck and the output shaft will stop suddenly due to the self-locking function, and the chuck will be loosened. This will loosen the workpiece such as the drill bit clamped by the chuck. There is a safety hazard; in addition, since the self-locking device is not provided with a buffer device, the self-locking mechanism is seriously worn during use, and its service life is shortened. In order to solve the above shortcomings, the existing method is to install a rubber ring, a wave gasket or a three-jaw gasket, but the rubber ring, the wave gasket or the three-claw gasket is easy to wear, the life is short, the installation is inconvenient, the structure is unstable, and The overall or local temperature rise of the gearbox is likely to cause adverse effects.

The purpose of the present invention is to provide a self-locking buffer silencer with good cushioning effect, sound-absorbing and shock-absorbing, and not easy to wear, in view of the deficiencies of the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: a self-locking buffer silencer device, which comprises a fixed stop ring, a power output disk whose front end is rotationally connected in the inner cavity of the stop ring, and is rotatably connected to the power output disk. The output shaft in the middle, the stop block for driving the rotation of the output shaft, the power output disc is driven to connect the output shaft through the stop block, and the plurality of sets of radial pressing are arranged between the circumferential surface of the output shaft and the inner side of the power output disc An elastic buffer mechanism for the circumferential surface of the output shaft.

The stopping block is sleeved on the output shaft, and a plurality of driving ribs are formed at the front end of the power output disc, and a stopping groove is formed in the axial direction of the driving rib, and a plurality of circumferential surfaces of the stopping block are uniformly formed a stop tooth corresponding to the stop groove, a self-locking surface is disposed between the adjacent two stop teeth of the stop tooth, and the plurality of stop teeth of the stop block are respectively inserted into the corresponding stop groove correspondingly .

A self-locking pin is respectively disposed between two adjacent driving ribs of the power output disc, and the self-locking pin is located between the self-locking surface of the stopping block and the inner side surface of the stopping ring.

A sliding surface is formed on a circumferential surface of the output shaft corresponding to the plurality of sets of elastic buffering mechanisms, and a plurality of sets of elastic buffering mechanisms are respectively pressed against the corresponding sliding surfaces.

A position of the inner side of the power output disc corresponding to the elastic buffer mechanism is respectively provided with a mounting hole arranged in the radial direction, and a plurality of sets of elastic buffering mechanisms are respectively disposed in the corresponding mounting holes.

The elastic buffer mechanism comprises a steel ball and a spring. The steel ball is located between the spring and the output shaft. One end of the spring is connected in the mounting hole, and the other end of the spring pushes the steel ball to press the steel ball to press the circumferential surface of the output shaft.

The mounting hole penetrates the inner and outer sides of the power output disk in the radial direction, and the outer side of the power output disk is sleeved with a ball bearing that blocks the mounting hole.

A mounting slot is defined in the axial direction of the inner side of the power output disc corresponding to the elastic buffer mechanism, and each of the mounting slots is provided with a fixing block, and the mounting hole is opened on the inner side surface of the fixing block.

The front and rear ends of the fixing block are respectively provided with hooks, and the fixing blocks are connected to the mounting slots by hooks.

The mounting groove is a T-shaped structure.

The utility model has the beneficial effects that the self-locking buffer silencer device provided by the utility model comprises a fixed stop ring, a power output disk with a front end pivotally connected in the inner cavity of the retaining ring, and a rotary connection in the power output disk. An output shaft, a stop block for driving the rotation of the output shaft, the power output disc is driven to connect the output shaft through the stop block, and a plurality of sets of radial pressing output shafts are arranged between the circumferential surface of the output shaft and the inner side of the power output disc The elastic buffering mechanism of the circumferential surface, the utility model utilizes a plurality of sets of elastic buffering mechanisms to form a ring to tightly press the circumferential surface of the output shaft, and the elastic buffer mechanism can effectively absorb the rotational inertia of the output shaft from all directions. The impact force and vibration can play a good role in cushioning the shock absorption, so that the output shaft can reduce the output shaft due to its own rotational inertia to drive the stop block, the stop ring, and the self when the motor is stopped by the motor. The impact noise between the lock pins can eliminate the sound absorption and is not easy to wear.

In order to provide the Applicant with a better understanding of the structure, features and other objects of the present invention, the following detailed description is provided with the following detailed description, but the embodiments illustrated in the drawings are for illustrative purposes. It is not the only restriction on patent applications.

The present invention will be further described below with reference to the accompanying drawings. As shown in Figures 1 to 3, the present invention includes a fixed stop ring 1, a front end pivotally connected to the power output disk 2 in the inner cavity of the retaining ring 1, and a rotary connection. In the output shaft 3 of the power output disc 2, the stopper 4 for driving the rotation of the output shaft 3, the power output disc 2 is driven to connect the output shaft 3 through the stopper 4, and the circumferential surface of the output shaft 3 and the power output disc 2 There are a plurality of elastic buffering mechanisms for radially pressing the circumferential surface of the output shaft 3 between the inner sides.

The stopping block 4 is sleeved on the output shaft 3, and a plurality of driving ribs 21 are formed at the front end of the power output disk 2. The inner side of the driving rib 21 is axially opened with a stopping groove 22, and the circumferential surface of the stopping block 4 A plurality of retaining teeth 41 corresponding to the retaining groove 22 are uniformly formed, and a self-locking surface 42 is disposed between the adjacent two retaining teeth 41 of the retaining tooth 41, and a plurality of retaining teeth 41 of the stopping block 4 are formed. Corresponding activities are respectively inserted in the corresponding stopping grooves 22. A self-locking pin 5 is disposed between two adjacent transmission ribs 21 of the power take-off disc 2, and the self-locking pin 5 is located between the self-locking surface 42 of the stop block 4 and the inner side surface of the stop ring 1. The self-locking surface 42 is a flat surface, and the inner side surface of the retaining ring 1 is a circular arc-shaped surface. The self-locking surface 42 of the stopper block 4 and the inner side surface of the retaining ring 1 form a large intermediate gap, and the gap between the two ends is small. Self-locking space.

A sliding surface 31 is formed on a circumferential surface of the output shaft 3 corresponding to the plurality of sets of elastic buffering mechanisms, and a plurality of sets of elastic buffering mechanisms are respectively pressed against the corresponding sliding surfaces 31 to increase the elastic buffering mechanism to the output shaft. 3 tangential force, more effective to cushion.

A position corresponding to the elastic buffer mechanism on the inner side of the power output disk 2 is respectively provided with a mounting hole 23 disposed in the radial direction, and a plurality of sets of elastic buffering mechanisms are respectively disposed in the corresponding mounting holes 23, and the structure is stable and reliable.

The elastic buffer mechanism comprises a steel ball 6 and a spring 7. The steel ball 6 is located between the spring 7 and the output shaft 3. One end of the spring 7 is connected in the mounting hole 23, and the other end of the spring 7 pushes the steel ball 6 to press the steel ball 6 to the output shaft. On the 3-week surface, the steel ball 6 is tightly pressed against the output shaft 3 by a spring force of the spring 7, and the spring 7 can effectively absorb the impact force generated by the rotational inertia of the output shaft 3 from all directions and The vibration can well act as a cushioning shock absorber, and it is not easy to wear by the contact of the steel ball 6 with the output shaft 3.

The mounting hole 23 penetrates the inner and outer side surfaces of the power output disc 2 in the radial direction, so that the drilling of the mounting hole 23 is convenient, and the outer side of the power output disc 2 is sleeved with the ball bearing 8 that blocks the mounting hole 23, which is convenient for installation.

The present invention uses a plurality of sets of elastic buffering mechanisms to form a ring to tightly press the circumferential surface of the output shaft 3, and the elastic buffer mechanism can effectively absorb the impact force and vibration generated by the rotational inertia of the output shaft 3 from various directions. It acts well to cushion the shock absorption, so that the output shaft 3 reduces the output shaft 3 to drive the stop block 4, the stop ring 1, and the self-locking pin 5 due to its own rotational inertia when the motor is suddenly stopped and loses power. The impact noise between the two can eliminate the sound absorption and is not easy to wear.

As another embodiment of the present invention, as shown in FIGS. 4 to 5, unlike the previous embodiment, the inside of the power output disk 2 is respectively provided with a mounting groove 24 in the axial direction at a position corresponding to the elastic buffer mechanism. A fixing block 9 is disposed in the mounting groove 24, and the mounting hole 23 is opened on the inner side surface of the fixing block 9. By opening the mounting hole 23 on the detachable fixing block 9, the processing and installation can be facilitated, and the number of the mounting holes can be effectively reduced. The utility model has the advantages of compact volume and compact structure. The front and rear ends of the fixing block 9 are respectively provided with hooks 91. The fixing block 9 is snap-fitted into the mounting groove 24 by the hooks 91, and the structure is stable. The mounting groove 24 has a T-shaped structure for easy processing and installation.

In summary, this creation can indeed achieve the above functions and purposes, so this creation should meet the requirements of the patent application, and apply in accordance with the law.

1‧‧‧stop ring
2‧‧‧Power output disk
21‧‧‧Drive ribs
22‧‧‧stop groove
23‧‧‧Installation holes
24‧‧‧Installation slot
3‧‧‧ Output shaft
31‧‧‧Slip surface
4‧‧‧stop block
41‧‧‧stop teeth
42‧‧‧Self-locking surface
5‧‧‧Self-locking pin
6‧‧‧ steel balls
7‧‧‧ Spring
8‧‧‧Ball bearings
9‧‧‧Fixed block
91‧‧‧ hook

[Fig. 1] is a schematic diagram of the structure of the present creation. [Fig. 2] is a cross-sectional view of the creation. [Fig. 3] is an exploded view of the creation. [Fig. 4] is a cross-sectional view showing another embodiment of the present creation. [Fig. 5] is an exploded perspective view showing another embodiment of the present creation.

1‧‧‧stop ring

2‧‧‧Output disk

21‧‧‧Drive ribs

23‧‧‧Installation holes

3‧‧‧ Output shaft

4‧‧‧stop block

5‧‧‧Self-locking pin

6‧‧‧ steel balls

7‧‧‧ Spring

8‧‧‧Ball bearings

Claims (10)

A self-locking buffer silencer comprising a fixed stop ring, a power output disk rotatably coupled to the inner cavity of the retaining ring, an output shaft rotatably coupled to the power output disk, and a rotation shaft for driving the output shaft a stop block, the power output disk is driven to connect the output shaft through the stop block, wherein: a plurality of sets of the circumferential surface of the output shaft and the inner side of the power output disk are arranged to radially press the circumferential surface of the output shaft Elastic buffer mechanism. The self-locking buffer muffling device of claim 1, wherein the stopping block is sleeved on the output shaft, and a plurality of driving ribs are formed at a front end of the power output disc, and the inner side of the driving rib is axially a retaining groove is formed, and a circumferential surface of the stopping block is uniformly formed with a plurality of stopping teeth corresponding to the stopping groove, and a self-locking surface is provided between the adjacent two stopping teeth of the stopping tooth, the stopping block The plurality of stop teeth are respectively inserted into the corresponding retaining grooves corresponding to the movable movement. The self-locking buffer muffling device of claim 2, wherein a self-locking pin is disposed between two adjacent driving ribs of the power output disc, and the self-locking pin is located at a self-locking of the stopping block. Between the face and the inner side of the stop ring. The self-locking buffer muffling device of claim 1, wherein the position of the output shaft corresponding to the plurality of sets of elastic buffer mechanisms is formed with a slip-stop surface, and the plurality of sets of elastic buffer mechanisms are respectively topped. Press on the corresponding slip surface. The self-locking buffer muffling device according to any one of claims 1 to 4, wherein a position corresponding to the elastic buffer mechanism inside the power output disc is respectively provided with a mounting hole arranged in a radial direction, and a plurality of groups The elastic buffer mechanisms are respectively disposed in the corresponding mounting holes. The self-locking buffer muffling device of claim 5, wherein the elastic buffer mechanism comprises a steel ball and a spring, the steel ball is located between the spring and the output shaft, and one end of the spring is connected in the mounting hole, and the spring is further Pushing the steel ball at one end causes the steel ball to press the circumferential surface of the output shaft. The self-locking buffer muffling device of claim 5, wherein the mounting hole penetrates the inner and outer sides of the power output disk in a radial direction, and the outer side of the power output disk is sleeved with a ball bearing that blocks the mounting hole. The self-locking buffer muffling device of claim 5, wherein the inner side of the power output disc and the elastic buffer mechanism are respectively provided with mounting slots in the axial direction, and each mounting slot is provided with a fixing block. The mounting hole is opened on the inner side of the fixing block. The self-locking buffer muffling device of claim 8, wherein the front and rear ends of the fixing block are respectively provided with hooks, and the fixing blocks are connected to the mounting slots by hooks. The self-locking buffer muffling device of claim 8, wherein the mounting groove is a T-shaped structure.