CN114789269A - Novel hammering converter - Google Patents

Novel hammering converter Download PDF

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Publication number
CN114789269A
CN114789269A CN202210668517.2A CN202210668517A CN114789269A CN 114789269 A CN114789269 A CN 114789269A CN 202210668517 A CN202210668517 A CN 202210668517A CN 114789269 A CN114789269 A CN 114789269A
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CN
China
Prior art keywords
transmission shaft
accommodating cavity
unit
main transmission
drill bit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210668517.2A
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Chinese (zh)
Inventor
金应太
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210668517.2A priority Critical patent/CN114789269A/en
Publication of CN114789269A publication Critical patent/CN114789269A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/005—Attachments or adapters placed between tool and hammer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention discloses a novel hammering converter. Comprises a shell unit which comprises a first through hole and a tooth-shaped boss; the transmission shaft unit is arranged at the first through hole of the shell unit, an accommodating cavity is arranged in the transmission shaft unit, and a plurality of movable grooves communicated with the accommodating cavity are formed in the outer wall of the transmission shaft unit; the impact unit comprises an impact block arranged in the accommodating cavity and a plurality of stroke rods which are arranged on the impact block and can synchronously act with the impact block, and the outer ends of the stroke rods penetrate through the movable grooves and are assembled at the tooth-shaped bosses; one end of the elastic piece is abutted against the impact unit, and the other end of the elastic piece is abutted against the inner wall of the accommodating cavity; and a drill bit. The invention adopts a brand new design, the motor drives the transmission shaft to rotate as an initial action, the elastic piece is compressed by combining the matching of the stroke rod and the tooth-shaped boss, and finally the impact block is pushed to impact the drill bit through the elastic piece.

Description

Novel hammering converter
Technical Field
The invention relates to the technical field of electric tools, in particular to a novel hammering converter.
Background
The existing common electric tool for the electric hammer and the electric drill is mainly switched by replacing a drill chuck, the drill chuck can be frequently assembled and disassembled during actual use, the operation is very inconvenient, the punching precision of the electric tool is low, a user feels uncomfortable, and the processing efficiency is low, so that the electric tool is improved by an applicant.
Disclosure of Invention
The present invention addresses the deficiencies in the prior art by providing a novel hammer converter.
In order to solve the technical problems, the invention is solved by the following technical scheme:
a novel hammer changer comprises
The shell unit comprises a first through hole and a tooth-shaped boss;
the transmission shaft unit is arranged at the first through hole of the shell unit and can be driven by the driving unit to rotate, an accommodating cavity is formed in the transmission shaft unit, and a plurality of movable grooves communicated with the accommodating cavity are formed in the outer wall of the transmission shaft unit;
the impact unit comprises an impact block arranged in the accommodating cavity and a plurality of stroke rods which are arranged on the impact block and can synchronously act with the impact block, and the outer ends of the stroke rods penetrate through the movable grooves and then are assembled at the toothed bosses;
one end of the elastic piece is abutted against the impact unit, and the other end of the elastic piece is abutted against the inner wall of the accommodating cavity; and
a drill bit movable into a stroke range of the percussion unit.
In the above scheme, preferably, the transmission shaft unit includes a main transmission shaft and an auxiliary transmission shaft which are assembled and connected with each other and can move synchronously, the main transmission shaft and the auxiliary transmission shaft are both correspondingly provided with an accommodating cavity and a movable groove, the impact block and the elastic element are installed in the auxiliary transmission shaft, and the stroke rod passes through the movable groove on the auxiliary transmission shaft and the movable groove on the main transmission shaft and then is assembled at the tooth-shaped boss.
In the above scheme, preferably, the housing unit includes an outer housing and an inner housing, the outer housing and the inner housing are all provided with first through holes for the transmission shaft unit to pass through, and the tooth-shaped boss is arranged on the inner housing.
In the above scheme, preferably, at least part of the drill bit is mounted in the accommodating cavity of the main transmission shaft.
In the above scheme, preferably, an impact transition piece is arranged between the drill bit and the impact block;
the impact transition piece is spherical in shape.
In the above scheme, preferably, the accommodating cavity of the main transmission shaft includes a first accommodating cavity for accommodating at least part of the auxiliary transmission shaft and a second accommodating cavity for accommodating at least part of the drill bit, the first accommodating cavity is communicated with the second accommodating cavity, and a first step is formed at the first accommodating cavity.
In the above scheme, preferably, an annular gasket is arranged between the inner end of the secondary transmission shaft and the first step, and the aperture of the second through hole in the annular gasket is smaller than the outer diameter of the impact transition piece.
In the above solution, preferably, the stroke rod is provided with a sliding member, and the sliding member is mounted at the movable groove;
the sliding part is a bearing;
the outer diameter of the sliding part is consistent with the width of the movable groove.
In the above scheme, preferably, the impact block includes a second step, and one end of the elastic member abuts against the second step;
the elastic piece is a spring;
the tooth-shaped boss comprises a plurality of boss units, each boss unit comprises a first wall from low to high and a second wall which is vertical or close to vertical, one end of the second wall is in transition connection with the highest end of the first wall, and the other end of the second wall is in transition connection with the lowest end of another adjacent boss unit;
the lowest end of the tooth-shaped boss comprises a notch matched with the shape and the size of the stroke rod.
In the above scheme, preferably, bearings are correspondingly arranged between the outer shell and the main transmission shaft and between the outer shell and the auxiliary transmission shaft;
the outer end of the main transmission shaft is provided with a limiting piece, the limiting piece is provided with a hole through which the drill bit can pass, and the aperture of the hole is matched with the outer diameter of the corresponding part of the drill bit;
an annular groove is formed in the outer end of the main transmission shaft, and a limiting part which is matched with the annular groove and enables the main transmission shaft and the limiting part to be clamped and matched with each other is arranged on the limiting part;
a plurality of limiting strips are arranged on the inner wall of the accommodating cavity of the main transmission shaft, and a plurality of limiting grooves corresponding to the limiting strips are formed in the drill bit;
a plurality of third through holes communicated with the accommodating cavity are formed in the main transmission shaft, steel balls are assembled at the third through holes, groove bodies matched with the steel balls are formed in the drill bit, locking pieces matched with the steel balls are assembled on the main transmission shaft in a sliding mode, and springs are arranged between the locking pieces and corresponding bearings;
the locking piece is provided with a sleeve;
one end of the main transmission shaft is provided with a plurality of grooves, the auxiliary transmission shaft is provided with a plurality of convex pieces corresponding to the grooves, and the main transmission shaft can synchronously rotate along with the rotation of the auxiliary transmission shaft through the matching of the grooves and the convex pieces;
the driving unit is a motor.
The invention has the beneficial effects that:
the invention adopts a brand new design, the motor drives the transmission shaft to rotate as an initial action, the elastic piece is compressed by combining the matching of the stroke rod and the toothed boss, and finally the impact block is pushed to impact the drill bit through the elastic piece.
Drawings
FIG. 1 is a schematic view of the present invention.
FIG. 2 is an exploded view of the present invention.
FIG. 3 is a schematic view of the engagement between the flight bar and the toothed projection according to the present invention.
FIG. 4 is a schematic cross-sectional view of the present invention.
FIG. 5 is a schematic view of the main drive shaft of the present invention.
FIG. 6 is a schematic view of a drill bit according to the present invention.
Fig. 7 is a schematic view of the transmission shaft unit, the trip bar and the housing unit of the present invention.
Fig. 8 is a schematic view of the engagement of the percussion unit with the drill bit according to the invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and embodiments:
referring to fig. 1 to 8, the novel hammer converter includes a housing unit, a transmission shaft unit, a striking unit, an elastic member 4, and a drill bit 5.
In the present embodiment, in order to make the relevant components be of a hidden design, the housing unit includes an outer housing 13 and an inner housing 14, as shown in fig. 1 to 3, wherein the outer housing 13 and the inner housing 14 are both provided with first through holes for the transmission shaft unit to pass through, the inner housing 14 is located in the outer housing 13 and can be covered by the outer housing 13, one end of the transmission shaft unit extends to be exposed outside the outer housing 13, the location is used for being in transmission connection with the driving unit, the driving unit can be a motor, or the location is mounted on a drill chuck at the front of the electric drill and is used as an electric hammer after replacing the electric drill chuck.
As for the tooth-shaped boss 12, it can be disposed on the inner housing 14, as shown in fig. 3, the tooth-shaped boss 12 is used for cooperating with the stroke rod 31 in the impact unit, the tooth-shaped boss 12 includes a plurality of boss units, each boss unit includes a first wall 121 from low to high and a vertical or nearly vertical second wall 122, the second wall 122 provides possibility for the stroke rod to fall instantly, specifically, one end of the second wall 122 is in transition connection with the highest end of the first wall 121, and the other end is in transition connection with the lowest end of another adjacent boss unit.
In order to ensure that the stroke rod 31 is matched with the toothed boss 12 more stably when the device is not used, a notch 123 matched with the shape and the size of the stroke rod 31 can be designed at the lowest end of the toothed boss 12.
The transmission shaft unit is arranged at the first through hole of the shell unit and can be driven by the driving unit to rotate, the transmission shaft unit is internally provided with a containing cavity 21, and the outer wall of the transmission shaft unit is provided with a plurality of movable grooves 22 communicated with the containing cavity.
In this embodiment, the transmission shaft unit includes a main transmission shaft 23 and a secondary transmission shaft 24, and referring to fig. 2, 4 and 7, the main transmission shaft 23 and the secondary transmission shaft 24 can be assembled and connected with each other and can synchronously move, and the transmission shaft unit is designed as two detachable main transmission shaft 23 and secondary transmission shaft 24, which mainly aims to more conveniently install and detach the components inside.
And between the main transmission shaft 23 and the auxiliary transmission shaft 24, the main transmission shaft 23 and the auxiliary transmission shaft 24 can be assembled and connected through the matching mode of the convex pieces 241 and the grooves 231, as shown in the exploded view of fig. 2, one end of the main transmission shaft 23 is provided with a plurality of grooves 231, the auxiliary transmission shaft 24 is provided with a plurality of convex pieces 241 corresponding to the grooves 231, the specific number of the grooves 231 and the convex pieces 241 can be selected according to actual needs, if the grooves are arranged at four positions, each convex piece 241 is clamped into the corresponding groove 231, the assembly between the main transmission shaft 23 and the auxiliary transmission shaft 24 is realized, the main transmission shaft 23 and the auxiliary transmission shaft 24 are integrated after the assembly, and the synchronous action can be realized.
In this embodiment, the main transmission shaft 23 and the auxiliary transmission shaft 24 are both provided with an accommodating cavity 21 and a movable groove 22, as shown in the sectional view of fig. 4, the accommodating cavity 21 of the main transmission shaft 23 and the accommodating cavity 21 of the auxiliary transmission shaft 24 can be communicated with each other, and the movable grooves 22 of the main transmission shaft 23 and the movable grooves 22 of the auxiliary transmission shaft 24 are in one-to-one correspondence for the corresponding stroke rods 31 to pass through.
The receiving cavity 21 of the main transmission shaft 23 may further include a first receiving cavity 211 for receiving at least a portion of the secondary transmission shaft 24 and a second receiving cavity 212 for receiving at least a portion of the drill bit, the first receiving cavity 211 and the second receiving cavity 212 are communicated with each other, a first step 213 is formed at the first receiving cavity 211, and the function of the first step 213 is described in detail in the following description of the impact unit.
On the main drive shaft 23, there is also associated a cooperating structure with the drill bit 5, as follows:
as described above, the main transmission shaft 23 is driven by the auxiliary transmission shaft 24 to rotate, and the drill bit 5 is also driven by the main transmission shaft 23 to rotate, so that the operation of the drill bit is more stable, specifically, a plurality of limiting strips 232 (which can be disposed on the inner wall of the second accommodating cavity) are disposed on the inner wall of the accommodating cavity of the main transmission shaft 23, as shown in fig. 5, a plurality of limiting grooves 51 corresponding to the limiting strips 232 are disposed on the drill bit 5, and the drill bit 5 is installed at the position of the main transmission shaft 23 by the corresponding cooperation of the limiting strips 232 and the limiting grooves 51.
In order to make the output of the drill bit 5 more stable, the outer end of the main transmission shaft 23 is further equipped with a limiting member 25, the limiting member 25 is provided with a hole for the drill bit 5 to pass through, and the aperture of the hole is matched with the outer diameter of the corresponding part of the drill bit 5, the corresponding part is the part passing through or close to the limiting member 25 within the movable stroke range of the drill bit 5.
As for the matching manner of the limiting member 25 and the main transmission shaft 23, one embodiment is as follows:
the outer end of the main transmission shaft 23 is provided with an annular groove 26, the limiting part 25 comprises a limiting part 251 which is matched with the annular groove 26 to enable the limiting part and the annular groove 26 to be clamped and matched, and the limiting part 251 is clamped into the annular groove 26 on the main transmission shaft 23 to achieve assembly connection of the limiting part and the annular groove.
Further, the drill bit 5 is only required to move within a set stroke range on the main transmission shaft 23 to prevent the drill bit from falling off, and the following design is made:
the main transmission shaft 23 is provided with a plurality of third through holes 27 communicated with the second accommodating cavity 212, as shown in fig. 4 and 5, the steel balls 28 are assembled at the third through holes 27, correspondingly, the drill bit 5 is provided with a groove 52 matched with the steel balls 28, and in the reciprocating process of the drill bit 5, the steel balls 28 relatively change the relative positions within the range of the groove 52.
When the steel balls 28 are not applied with external force, the drill bit 5 can be detached from the main transmission shaft 23, and when the work needs, the drill bit 5 cannot be detached from the main transmission shaft 23, the steel balls 28 can be pressed downwards, specifically, a locking member 61 matched with the steel balls 28 is arranged on the main transmission shaft 23 in a sliding mode, when the locking member 61 presses the steel balls 28, the drill bit 5 cannot be detached, and when the locking member 61 leaves the position of the steel balls 28, the drill bit 5 can be detached.
Furthermore, a spring 63 is arranged between the locking member 61 and the corresponding bearing 62, a sleeve 64 is assembled on the locking member 61, when the drill bit 5 needs to be dismounted, the sleeve 64 is pushed transversely, the spring 63 contracts, after the drill bit 5 is dismounted or when the drill bit 5 needs to be locked in the installation process, the sleeve 64 is released, and the spring 63 returns to lock the drill bit 5.
Meanwhile, the clearance between the inner wall of the sleeve 64 and the main transmission shaft 23 may be designed to be smaller than the radius or diameter of the steel ball, so that the steel ball 28 will not come out from the corresponding hole when the sleeve 64 drives the locking member 61.
The striking unit comprises a striking block 32 arranged in the accommodating cavity 21 and a plurality of stroke rods 31 which are arranged on the striking block 32 and can synchronously act with the striking block, and the outer ends of the stroke rods 31 penetrate through the movable grooves 22 and then are assembled on the toothed bosses 12.
As described above, the secondary transmission shaft 24 also has the receiving cavity 21 and the movable slot 22 therein, in the embodiment, the striking block 32 is disposed in the receiving cavity 21 of the secondary transmission shaft 24, as shown in fig. 4 and 8, the striking block 32 has a portion with a larger diameter, a second step 321 is formed therein, and an elastic element 4 is disposed and can be sleeved on the striking block 32, one end of the elastic element 5 abuts against the second step 321, the other end abuts against the inner wall of the receiving cavity 21 of the secondary transmission shaft 24, and the elastic element 4 can be a spring.
And the stroke rod 31 can be arranged on the impact block 32 in a penetrating way or integrally formed on the impact block 32, and one end or two ends of the stroke rod penetrate through the movable grooves 22 of the main transmission shaft 23 and the auxiliary transmission shaft 24 and then are connected with the corresponding parts of the dentate bosses 12 in a matching way.
When the motor drives the auxiliary transmission shaft 24 and the main transmission shaft 23 to rotate, the stroke rod 31 is influenced by the wall of the movable groove 22 to rotate along with the movable groove, meanwhile, the stroke rod 31 is influenced by the wall of the toothed boss 12 to gradually move towards the direction far away from the drill bit 5 to drive the impact block 32 to move in the same direction, so that the elastic part 4 is compressed, after the stroke rod 31 leaves the highest position of the toothed boss 12, the stroke rod rapidly falls to the lowest position of the toothed boss 12, the elastic part 4 stretches to push the impact block 32 to impact the drill bit 5, and the hammering function is completed.
In this embodiment, the impact unit further includes an impact transition piece 7 disposed between the drill bit 5 and the impact block 32 and located in the accommodating cavity (specifically, the second accommodating cavity 212) of the main transmission shaft 23, as shown in fig. 4, the impact transition piece 7 may be in a spherical shape, and in order to further limit the movable range of the impact transition piece 7, an annular gasket 71 is disposed between the inner end of the secondary transmission shaft 24 and the first step 213 of the main transmission shaft 23, and the diameter of the second through hole of the annular gasket 71 is smaller than the outer diameter of the impact transition piece 7.
For other supplementary settings, the stroke rod 31 is provided with a sliding member 72, as shown in fig. 7, the sliding member 72 is installed at the movable slot 22 to reduce the friction loss therebetween, the sliding member 72 may be a small bearing, and the outer diameter of the sliding member 72 may be consistent with the width of the movable slot 22.
As shown in fig. 4 and 8, a bearing may be correspondingly disposed between the outer casing 13 and the main transmission shaft 23 and between the outer casing 13 and the auxiliary transmission shaft 24, wherein the bearing between the outer casing 13 and the main transmission shaft 23 may be used for the abutment of the spring as described above.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. Novel hammering converter, its characterized in that: comprises that
The shell unit comprises a first through hole and a tooth-shaped boss;
the transmission shaft unit is arranged at the first through hole of the shell unit and can be driven by the driving unit to rotate, an accommodating cavity is formed in the transmission shaft unit, and a plurality of movable grooves communicated with the accommodating cavity are formed in the outer wall of the transmission shaft unit;
the impact unit comprises an impact block arranged in the accommodating cavity and a plurality of stroke rods which are arranged on the impact block and can synchronously act with the impact block, and the outer ends of the stroke rods penetrate through the movable grooves and then are assembled at the toothed bosses;
one end of the elastic piece is abutted against the impact unit, and the other end of the elastic piece is abutted against the inner wall of the accommodating cavity; and
a drill bit movable into a range of travel of the percussion unit.
2. The new hammer converter of claim 1 wherein: the transmission shaft unit comprises a main transmission shaft and an auxiliary transmission shaft which are mutually assembled and connected and can synchronously act, the main transmission shaft and the auxiliary transmission shaft are correspondingly provided with an accommodating cavity and a movable groove, the impact block and the elastic piece are arranged in the auxiliary transmission shaft, and the travel rod penetrates through the movable groove on the auxiliary transmission shaft and the movable groove on the main transmission shaft and then is assembled at the toothed boss.
3. The new hammer converter of claim 2 wherein: the shell unit comprises an outer shell and an inner shell, wherein first through holes for the transmission shaft unit to penetrate through are formed in the outer shell and the inner shell, and the tooth-shaped boss is arranged on the inner shell.
4. The new hammer converter of claim 2 wherein: at least part of the drill bit is arranged at the accommodating cavity of the main transmission shaft.
5. The new hammer converter of claim 1 wherein: an impact transition piece is arranged between the drill bit and the impact block;
the impact transition piece is spherical in shape.
6. The new hammer converter of claim 5 wherein: the accommodating cavity of the main transmission shaft comprises a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is used for accommodating at least part of the auxiliary transmission shaft, the second accommodating cavity is used for accommodating at least part of the drill bit, the first accommodating cavity is communicated with the second accommodating cavity, and a first step is formed at the first accommodating cavity.
7. The new hammer converter of claim 6 wherein: an annular gasket is arranged between the inner end of the auxiliary transmission shaft and the first step, and the diameter of a second through hole in the annular gasket is smaller than the outer diameter of the impact transition piece.
8. The new hammer converter of claim 1 wherein: the stroke rod is provided with a sliding piece which is arranged at the movable groove;
the sliding part is a bearing;
the outer diameter of the sliding part is consistent with the width of the movable groove.
9. The new hammer converter of claim 1 wherein: the impact block comprises a second step, and one end of the elastic piece is abutted against the second step;
the elastic piece is a spring;
the tooth-shaped boss comprises a plurality of boss units, each boss unit comprises a first wall from low to high and a vertical or nearly vertical second wall, one end of each second wall is in transition connection with the highest end of the corresponding first wall, and the other end of each second wall is in transition connection with the lowest end of the other adjacent boss unit;
the lowest end of the toothed boss comprises a notch matched with the stroke rod in shape and size.
10. The novel hammer converter according to any one of claims 3-9, wherein: bearings are correspondingly arranged between the outer shell and the main transmission shaft and between the outer shell and the auxiliary transmission shaft;
the outer end of the main transmission shaft is provided with a limiting piece, the limiting piece is provided with a hole through which the drill bit can pass, and the aperture of the hole is matched with the outer diameter of the corresponding part of the drill bit;
the outer end of the main transmission shaft is provided with an annular groove, and the limiting part comprises a limiting part which is matched with the annular groove and enables the main transmission shaft and the annular groove to be clamped and matched;
a plurality of limiting strips are arranged on the inner wall of the accommodating cavity of the main transmission shaft, and a plurality of limiting grooves corresponding to the limiting strips are formed in the drill bit;
a plurality of third through holes communicated with the accommodating cavity are formed in the main transmission shaft, steel balls are assembled at the third through holes, groove bodies matched with the steel balls are formed in the drill bit, locking pieces matched with the steel balls are assembled on the main transmission shaft in a sliding mode, and springs are arranged between the locking pieces and corresponding bearings;
the locking piece is provided with a sleeve;
one end of the main transmission shaft is provided with a plurality of grooves, a plurality of convex pieces corresponding to the grooves are arranged on the auxiliary transmission shaft, and the main transmission shaft can synchronously rotate along with the rotation of the auxiliary transmission shaft through the matching of the grooves and the convex pieces;
the driving unit is a motor.
CN202210668517.2A 2022-06-14 2022-06-14 Novel hammering converter Pending CN114789269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210668517.2A CN114789269A (en) 2022-06-14 2022-06-14 Novel hammering converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210668517.2A CN114789269A (en) 2022-06-14 2022-06-14 Novel hammering converter

Publications (1)

Publication Number Publication Date
CN114789269A true CN114789269A (en) 2022-07-26

Family

ID=82463765

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210668517.2A Pending CN114789269A (en) 2022-06-14 2022-06-14 Novel hammering converter

Country Status (1)

Country Link
CN (1) CN114789269A (en)

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