CN217620305U

CN217620305U - Pneumatic screwdriver and beating mechanism thereof

Info

Publication number: CN217620305U
Application number: CN202221805838.4U
Authority: CN
Inventors: 林星春
Original assignee: Zhejiang East Pneumatic Machinery Co ltd
Current assignee: Zhejiang East Pneumatic Machinery Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-10-21
Anticipated expiration: 2032-07-14

Abstract

The utility model provides a pneumatic screwdriver's that stability, oil storage nature and leakproofness are better beats mechanism and pneumatic screwdriver. The technical scheme adopted comprises the following steps: the transmission sleeve and the spanner shaft are coaxially sleeved at two ends of the bracket, the two beating blocks are symmetrically connected to two sides of the bracket through the transmission pins in a pin mode, symmetrical grooves are formed in the end portion of the transmission sleeve, protruding blocks embedded into the grooves are arranged at the end portions of the beating blocks, the transmission pins penetrate through the protruding blocks to be connected with the bracket, symmetrical fan-shaped beating surfaces are arranged at the end portion of the spanner shaft, the beating blocks are arc-shaped, and beating tip portions used for beating the fan-shaped beating surfaces are arranged at two ends of the beating blocks.

Description

Pneumatic screwdriver and beating mechanism thereof

Technical Field

The utility model belongs to the pneumatic tool field, concretely relates to pneumatic screwdriver beat mechanism and pneumatic screwdriver.

Background

Pneumatic screwdriver is also called: pneumatic drivers, pneumatic screwdrivers, and the like are not the same, but pneumatic tools for tightening and loosening screws and nuts, and the like. The pneumatic screw driver is operated by using compressed air as power. The existing pneumatic screwdriver structure includes: the pneumatic hammer comprises a shell, and an air valve assembly and a rotor assembly which are arranged in the shell, wherein a hammering mechanism is arranged at the front end of the shell, and the hammering mechanism is connected with a screwdriver head through the front end of a wrench shaft of a locking mechanism. There are disadvantages in that: when the fan-shaped beating surface is beaten by the beating block of the beating mechanism, the impact force of the reaction is directly stressed on the transmission pin connected with the beating block, so that the transmission pin is easy to deform; in addition, because the bracket of the hammering mechanism is of an open structure, lubricating grease cannot be effectively stored, the lubricating grease can be thrown out by the centrifugal force of high-speed rotation or splashed out during hammering, the lubricating grease cannot stay in the hammering mechanism for a long time, the hammering block can be quickly worn and the service life of the hammering block is reduced due to weakened lubricating effect, and therefore in order to ensure the lubricating effect, the lubricating grease needs to be replenished by disassembling after being used for a period of time, the replenishing frequency is high, and the splashed lubricating grease is easily seeped out from a gap between the wrench shaft and the outer sleeve to pollute equipment and workpieces.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a better pneumatic screwdriver's of stability, oil storage nature and leakproofness beat mechanism and pneumatic screwdriver.

In order to solve the above problem, the utility model discloses a technical scheme include: pull axle, bracket, transmission cover, beat piece, transmission round pin, transmission cover, pull the coaxial cup joint in the both ends of bracket, two beat the piece through the pin joint of transmission round pin symmetry in the bracket both sides, its characterized in that: the end part of the transmission sleeve is provided with symmetrical grooves, the end part of the beating block is provided with a convex block embedded into the groove, the transmission pin penetrates through the convex block to be connected with the bracket, the end part of the spanner shaft is provided with symmetrical fan-shaped beating surfaces, the beating block is arc-shaped, and two ends of the beating block are provided with beating tip parts used for beating the fan-shaped beating surfaces.

Pneumatic screwdriver's beat mechanism, its characterized in that: the front end of the bracket is coaxially embedded with an adjusting ring, and the wrench shaft is sleeved in the adjusting ring.

Pneumatic screwdriver beat mechanism, its characterized in that: the bracket is sleeved with an outer sleeve, the front end of the outer sleeve is tightly matched with an oil-containing lining, and the wrench shaft is sleeved in the oil-containing lining.

Pneumatic screwdriver's beat mechanism, its characterized in that: and a sealing ring is arranged between the wrench shaft and the oil-containing bush.

Pneumatic screwdriver beat mechanism, its characterized in that: the rear end center of the wrench shaft is provided with a shaft hole, and the front end of the rotating shaft of the rotor assembly is inserted into the shaft hole to be in running fit with the shaft hole.

Pneumatic screwdriver's beat mechanism, its characterized in that: the inner wall of the hammering block is at least provided with an oil storage tank.

Pneumatic screwdriver's beat mechanism, its characterized in that: and a rotating sheet is arranged between the spanner shaft corresponding to the bracket and the oil-containing bush.

The utility model provides a pneumatic screwdriver, includes the casing and establishes pneumatic valve assembly and rotor subassembly in the casing, its characterized in that: the front end of the shell is provided with the hammering mechanism of the pneumatic screwdriver.

The utility model discloses a pneumatic screwdriver's the mechanism of beating and pneumatic screwdriver advantage as follows: adopt convex the piece of beating and pull epaxial fan-shaped face of beating to beat the cooperation, and in the lug embedding of the piece of beating and the recess of transmission cover, the transmission round pin passes simultaneously the lug with bracket connection for the connection between piece of beating, fan-shaped face of beating, the transmission cover is very stable, and reaction force when beating can act on transmission round pin, lug and transmission cover simultaneously, in order to alleviate the impact to the transmission round pin, thereby effectively prevents the deformation of transmission round pin.

The present invention will be further explained with reference to the drawings.

Drawings

Fig. 1 is a transverse sectional view of the hammering mechanism of the present invention;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is an exploded view of the hammering mechanism of the present invention;

FIG. 4 is a schematic structural view of the transmission sleeve of the present invention;

FIG. 5 is a schematic structural view of the hammering block of the present invention;

FIG. 6 shows a wrench shaft according to the present invention;

fig. 7 is a schematic structural view of the pneumatic screwdriver of the present invention.

Detailed Description

Example 1:

referring to fig. 1-6, the hammering mechanism of the pneumatic screwdriver of the present invention comprises a wrench shaft 1, a bracket 2, a driving sleeve 3, a hammering block 4 and a driving pin 5. The transmission sleeve 3 and the wrench shaft 1 are coaxially sleeved at two ends of the bracket 2, meanwhile, the transmission sleeve 3 is tightly matched with the bracket 2, and the wrench shaft 1 is rotatably matched with the bracket 2. Two beating blocks 4 are symmetrically pinned on two sides of the bracket 2 through transmission pins 5. The end part of the transmission sleeve 3 is provided with symmetrical grooves 6, the end part of the hammering block 4 is provided with a convex block 7 embedded in the grooves 6, and the transmission pin 5 penetrates through the convex block 7 to be connected with the bracket 2. The lug 7 is rotatably matched with the transmission pin 5. The end part of the wrench shaft 1 is provided with symmetrical fan-shaped beating surfaces 8. The beating block 4 is arc-shaped, and two ends of the beating block 4 are provided with beating tips 9 for beating the fan-shaped beating surface 8. Note: by adopting the structure, the problems of the stability of the connection among the hammering block, the fan-shaped hammering surface and the transmission sleeve and the durability of the transmission pin are mainly solved, and the hammering principle of the hammering mechanism is a known technology and is not described herein.

Preferably, an adjusting ring 10 is coaxially embedded at the front end of the bracket 2, and the wrench shaft 1 is sleeved in the adjusting ring 10. The adjusting ring 10 is an alloy gold ring with strength and precision higher than those of the bracket 2, and the adjusting ring 10 is arranged to improve the mounting precision and the wear resistance between the wrench shaft 1 and the bracket 2.

Preferably, an outer sleeve 11 is sleeved outside the bracket 2, an oil-containing bush 12 is tightly fitted at the front end of the outer sleeve 11, and the wrench shaft 1 is sleeved in the oil-containing bush 12. The oil-containing bush 12 is filled with grease to ensure the smoothness of the wrench shaft 1, and a sealing ring 13 is arranged between the wrench shaft 1 and the oil-containing bush 12. The oil-containing bush 12 and the sealing ring 13 work together to prevent grease from leaking out of a gap between the wrench shaft and the outer sleeve.

Preferably, the wrench shaft 1 is provided with a shaft hole 14 at the rear end center, and the front end of the rotating shaft 16 of the rotor assembly 15 is inserted into the shaft hole 14 to be rotatably matched therewith. The rotating shaft 16 of the rotor assembly 15 is inserted into the shaft hole 14 of the wrench shaft 1, so that the two are coaxially arranged, and the rotating stability of the wrench shaft 1 is improved.

Preferably, an oil storage tank 17 is arranged on the inner wall of the hammering block 4. The specifications (number, depth, width and the like) of the oil storage tank 17 are not strictly required, and as long as the strength of the beating block 4 is ensured to be advanced, the oil storage is more when the specification is large, and the oil storage is less when the specification is small, and the specifications are determined according to actual requirements. The oil storage tank 17 can be used for storing grease, so that the frequency of oil storage supplement can be reduced.

Preferably, a rotating piece 18 is arranged between the wrench shaft 1 and the bracket 2 corresponding to the oil-containing bushing 12. The rotating plate 18 is made of a high-strength alloy to protect the end of the bracket 2 and prevent abrasion.

Example 2:

referring to fig. 7, the pneumatic screwdriver of the present invention includes a housing 19, and an air valve assembly 20 and a rotor assembly 15 disposed in the housing 19, wherein the hammering mechanism of the pneumatic screwdriver of embodiment 1 is installed at the front end of the housing 19. Specifically, the method comprises the following steps: the outer sleeve 11 of the hammering mechanism is in threaded connection with the front end of the shell 19. The rotating shaft 16 of the rotor assembly 15 is sleeved in the driving sleeve 3 and is engaged with the inner hexagonal of the driving sleeve 3 through the outer hexagonal of the rotating shaft 16, so that the rotation of the rotating shaft 16 can drive the synchronous rotation of the driving sleeve 3. The front end of a wrench shaft 1 of the hammering mechanism is provided with a screwdriver bit 21 and is meshed with the screwdriver bit 21, so that the screwdriver bit 21 is driven to synchronously rotate by the rotation of the wrench shaft 1.

As described above, the present invention is not limited to the above embodiments, and although the present invention has been disclosed in the above embodiments, it is not limited to the above embodiments, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention.

Claims

1. The utility model provides a pneumatic screwdriver's mechanism of beating, includes arbor (1), bracket (2), transmission cover (3), beats piece (4), transmission round pin (5), coaxial the cup jointing of transmission cover (3), arbor (1) in the both ends of bracket (2), two beat piece (4) through the pin joint of transmission round pin (5) symmetry in bracket (2) both sides, its characterized in that: the tip of transmission cover (3) is equipped with recess (6) of symmetry, the tip of beating piece (4) is equipped with the embedding lug (7) in recess (6), transmission round pin (5) pass lug (7) with bracket (2) are connected, the tip of pulling axle (1) is equipped with the fan-shaped face of beating (8) of symmetry, it is convex, and both ends are equipped with and are used for beating to beat piece (4) beat sharp portion (9) of beating of fan-shaped face of beating (8).

2. The hammering mechanism for a pneumatic screwdriver of claim 1, wherein: the front end of the bracket (2) is coaxially embedded with an adjusting ring (10), and the wrench shaft (1) is sleeved in the adjusting ring (10).

3. The hammering mechanism of the pneumatic screwdriver of claim 1, wherein: an outer sleeve (11) is sleeved outside the bracket (2), an oil-containing bush (12) is tightly matched at the front end of the outer sleeve (11), and the wrench shaft (1) is sleeved in the oil-containing bush (12).

4. The hammering mechanism of a pneumatic screwdriver according to claim 3, wherein: and a sealing ring (13) is arranged between the wrench shaft (1) and the oil-containing bush (12).

5. The hammering mechanism for a pneumatic screwdriver of claim 1, wherein: the wrench shaft is characterized in that a shaft hole (14) is formed in the center of the rear end of the wrench shaft (1), and the front end of a rotating shaft (16) of the rotor assembly (15) is inserted into the shaft hole (14) to be in running fit with the shaft hole.

6. The hammering mechanism of the pneumatic screwdriver of claim 1, wherein: the inner wall of the hammering block (4) is at least provided with an oil storage tank (17).

7. The hammering mechanism of a pneumatic screwdriver according to claim 3, wherein: and a rotating sheet (18) is arranged between the spanner shaft (1) and the oil-containing bush (12) corresponding to the bracket (2).

8. A pneumatic screwdriver, comprising a housing (19) and an air valve assembly (20) and a rotor assembly (15) arranged in the housing (19), characterized in that: a hammering mechanism of the pneumatic screwdriver of any one of claims 1 to 7 is mounted on the front end of the housing (19).