CN215067748U

CN215067748U - Be applied to assembly structure of time wheel and main splint of electronic clock cassette mechanism

Info

Publication number: CN215067748U
Application number: CN202121440422.2U
Authority: CN
Inventors: 吴术罡; 郭燕芬
Original assignee: Fujian Zhongchen Precision Co ltd
Current assignee: Fujian Zhongchen Precision Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-07
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a be applied to time wheel and main splint's of electronic clock cassette mechanism assembly structure, including main splint, time wheel, be equipped with first recess in the middle of the outer terminal surface of main splint, the middle wheel post when cylindrical of outwards extending of first recess, be equipped with first central through-hole on the wheel post when cylindrical, this first central through-hole supplies minute hand installation pipe to pass, and the time wheel is equipped with second central through-hole, and the time wheel passes through the rotatable cup joint of second central through-hole on the wheel post when cylindrical, is equipped with the projection on the main splint of first recess periphery, and the projection breaks away from along radially expanding the restriction time wheel through the riveting the wheel post when cylindrical. Furthermore, a second groove is formed in the periphery of the first groove on the outer end face of the main clamping plate, and the convex column is located on the bottom face of the second groove. The utility model discloses reduce the part of electronic clock core, simplified assembly process is favorable to realizing automatic assembly, improves production efficiency, reduces the cost of manufacture.

Description

Be applied to assembly structure of time wheel and main splint of electronic clock cassette mechanism

Technical Field

The utility model belongs to the technical field of the electronic clock makes the technique and specifically relates to an assembly structure who is applied to hour wheel and main clamping plate of electronic clock cassette mechanism.

Background

The existing electronic clock movement needs to be provided with a main clamping plate and a time wheel, the time wheel is sleeved on a time wheel column of the main clamping plate, at the moment, the time wheel is not limited in the axial direction and is in a loosening state, and in order to prevent the time wheel from separating from the time wheel column, a third part needs to be additionally arranged on the main clamping plate to limit the time wheel to separate from the time wheel column. Since a third part is added. Not only parts are increased, but also the assembly process is complicated, thereby improving the production cost and reducing the production efficiency.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a be applied to time wheel and main plate's of electronic clock cassette mechanism assembly structure, its part that has reduced the electronic clock cassette mechanism simplifies the assembly process, is favorable to realizing automatic assembly, improves production efficiency, reduces the cost of manufacture.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides an assembly structure for time wheel and main splint of electronic clock cassette mechanism, including the main splint, the time wheel, be equipped with first recess in the middle of the outer terminal surface of main splint, a cylindrical time wheel post of outwards extending in the middle of first recess, be equipped with first central through-hole on the cylindrical time wheel post, this first central through-hole supplies minute needle installation pipe to pass, the time wheel is equipped with second central through-hole, the time wheel passes through the rotatable cup joint of second central through-hole on cylindrical time wheel post, be equipped with the projection on the peripheral main splint of first recess, the projection breaks away from along radially expanding the restriction time wheel through the riveting cylindrical time wheel post.

Preferably, the boss is a cylindrical boss.

Further preferably, the diameter of the convex column is phi 0.8 mm-phi 1 mm; the height of the convex column is 0.3mm-0.4 mm.

Preferably, two convex columns or three convex columns are arranged on the main clamping plate at the periphery of the first groove.

The hour wheel is a cylindrical gear, the outer end face of the hour wheel extends outwards to form a circle of circular reinforcing lug boss, and the hour tube is arranged in the middle of the circular reinforcing lug boss and extends outwards. The strength of the hour wheel can be enhanced through the circular reinforcing boss, the outer end face of the circular reinforcing boss and the surface of the electronic clock can be limited mutually, and the hour wheel is prevented from being brought out when the hour hand is detached.

The peripheral surface of the hour hand assembling pipe is in a stepped cylinder shape; when the hour wheel is sleeved on the cylindrical hour wheel column, the end face of the circular reinforcing boss is slightly lower than the outer end face of the main clamping plate.

Preferably, the main clamping plate and the convex column are made of plastic, the main clamping plate and the convex column are connected into a whole, and the riveting is hot riveting.

In a further improvement, a circle of protrusions are arranged in the middle of the bottom surface of the first groove. The friction force of the rotation of the hour wheel can be reduced by matching the bulge with the hour wheel.

In a further improvement, a second groove is formed in the periphery of the first groove on the outer end face of the main clamping plate, and the convex column is located on the bottom face of the second groove. Therefore, the height of the convex column after riveting is not higher than the outer end face of the main clamping plate, and mutual interference with a dial of an electronic clock is prevented.

Preferably, the outer end face of the convex column after being riveted is flat with the outer end face of the main clamping plate, or the outer end face of the convex column after being riveted is slightly lower than the outer end face of the main clamping plate.

The utility model discloses owing to be equipped with the projection on the peripheral main splint of first recess, then the projection breaks away from along radially expanding the time wheel of restriction through the riveting the wheel post when cylindrical. Therefore, a third part is not needed to be additionally arranged to be matched with the main clamping plate to limit the separation of the hour wheel from the hour wheel column. The number of parts is reduced, the assembly process is simplified, the automatic assembly is facilitated, the production efficiency is improved, the manufacturing cost of the movement of the electronic clock is reduced, and the market competitiveness is improved.

Drawings

FIG. 1 is a perspective view of the present invention before riveting the convex column;

FIG. 2 is a perspective view of the utility model after riveting the convex column;

FIG. 3 is a view from the direction A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a perspective view of the main plate;

fig. 6 is a perspective view of the hour wheel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 to 6 show that an assembly structure of a hour wheel and a main plate applied to an electronic clock movement comprises a main plate 1 and an hour wheel 2, wherein a first groove 11 is formed in the middle of the outer end face of the main plate 1, a cylindrical hour wheel post 12 extends outwards from the middle of the first groove 11, a first central through hole 121 is formed in the cylindrical hour wheel post 12, a minute hand mounting pipe 3 penetrates through the first central through hole 121, a second wheel shaft 4 penetrates through a central hole of the minute hand mounting pipe 3, a second central through hole 21 is formed in the hour wheel 2, the second central through hole 21 is a stepped through hole, the hour wheel 2 is rotatably sleeved on the cylindrical hour wheel post 12 through the second central through hole 21, three convex columns 13 are arranged on the main plate 1 at the periphery of the first groove 11, and each convex column 13 is riveted and radially expanded to limit the hour wheel 2 to be separated from the cylindrical hour wheel post 12. The three convex columns 13 are uniformly distributed around the first groove 11.

Each of the bosses 13 is a cylindrical boss 13. The diameter of each convex column 13 is preferably phi 0.8 mm-phi 1 mm; the height of each stud 13 is preferably 0.3mm to 0.4 mm.

The hour wheel 2 is a cylindrical gear, the outer side end face of the hour wheel 2 extends outwards to form a circle of circular reinforcing bosses 22, and the middle of each circular reinforcing boss 22 extends outwards to form a needle assembling pipe 23. The outer peripheral surface of the hour hand assembling pipe 23 is stepped to facilitate the assembly of the hour hand.

When the hour wheel 2 is sleeved on the cylindrical hour wheel post 12, the end surface of the circular reinforcing boss 22 is slightly lower than the outer end surface 1a of the main clamping plate 1. The outer end face 1a of the main plate 1 is fitted to a dial of an electronic timepiece.

The main clamping plate 1 and the convex column 13 are made of plastic, the main clamping plate 1 and the convex column 13 are connected into a whole, and the riveting is hot riveting. During hot riveting, the temperature of the hot riveting head is generally adjusted to 250-350 ℃.

The middle part of the bottom surface of the first groove 11 is provided with a circle of protrusions 14. The friction force of the rotation of the hour wheel 2 can be reduced by the contact of the protrusions 14 with the inner end surface of the hour wheel 2.

The outer end face of the main clamping plate 1 is provided with a second groove 15 at the periphery of the first groove 11, and the three convex columns 13 are positioned on the bottom surface of the second groove 15.

The outer end face of the convex column 13 is riveted to be flat with the outer end face 1a of the main clamping plate 1. Or the outer end surface of the convex column 13 after riveting can be slightly lower than the outer end surface 1a of the main clamping plate 1.

During the assembly of the embodiment, the hour wheel 2 is sleeved on the cylindrical hour wheel post 12 through the second central through hole 21, then the three convex columns 13 are hot riveted, each convex column 13 is radially expanded after being hot riveted, and the hour wheel 2 can be limited to be separated from the cylindrical hour wheel post 12. Therefore, the automatic installation can be conveniently realized without additionally arranging a third part, the production efficiency is improved, and the manufacturing cost is also reduced.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an assembly structure of time wheel and main plate for electronic clock cassette mechanism, includes main plate, time wheel, its characterized in that: the middle of the outer end face of the main clamping plate is provided with a first groove, a cylindrical time wheel column extends outwards from the middle of the first groove, a first central through hole is formed in the cylindrical time wheel column and is used for allowing a minute needle installation pipe to penetrate through, a second central through hole is formed in the time wheel, the time wheel is rotatably sleeved on the cylindrical time wheel column through the second central through hole, a protruding column is arranged on the main clamping plate on the periphery of the first groove, and the protruding column is riveted to expand radially to limit the time wheel to be separated from the cylindrical time wheel column.

2. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 1, wherein: the convex column is a cylindrical convex column.

3. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 2, wherein: the diameter of the convex column is phi 0.8 mm-phi 1 mm; the height of the convex column is 0.3mm-0.4 mm.

4. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 1, wherein: the main clamping plate around the first groove is provided with two convex columns or three convex columns.

5. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 1, wherein: the hour wheel is a cylindrical gear, the outer end face of the hour wheel extends outwards to form a circle of circular reinforcing lug boss, and the hour tube is arranged in the middle of the circular reinforcing lug boss and extends outwards.

6. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 5, wherein: the outer peripheral surface of the hour hand assembly pipe is in a stepped cylindrical shape; when the hour wheel is sleeved on the cylindrical hour wheel column, the end face of the circular reinforcing boss is slightly lower than the outer end face of the main clamping plate.

7. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 1, wherein: the main clamping plate and the convex column are made of plastic, the main clamping plate and the convex column are connected into a whole, and the riveting is hot riveting.

8. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 1, wherein: the middle part of the bottom surface of the first groove is provided with a circle of bulges.

9. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to any one of claims 1 to 8, wherein: and the outer end face of the main clamping plate is provided with a second groove at the periphery of the first groove, and the convex column is positioned on the bottom surface of the second groove.

10. An assembling structure of an hour wheel and a main plate applied to an electronic timepiece movement according to claim 9, wherein: the outer end face of the convex column after being riveted is flat with the outer end face of the main clamping plate, or the outer end face of the convex column after being riveted is slightly lower than the outer end face of the main clamping plate.