CN211931117U

CN211931117U - Circuit board mounting structure for two-dimensional code learning machine

Info

Publication number: CN211931117U
Application number: CN202021074847.1U
Authority: CN
Inventors: 任昌明
Original assignee: Huaying Yingsheng Electronics Co ltd
Current assignee: Huaying Yingsheng Electronics Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2020-11-13
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a circuit board mounting structure for a two-dimensional code learning machine, belonging to the technical field of electronic equipment; the elastic ring is arranged in the circuit board mounting hole, the outer end of the elastic ring abuts against the fastener, when the fastener is pressed, the periphery of the elastic ring is elastically expanded to abut against the hole wall of the mounting hole, and when the fastener is not in a pressing state, a gap is formed between the side surface of the elastic ring and the hole wall of the mounting hole; the elastic ring comprises at least one thin wall part and one thick wall part; the utility model discloses avoided circuit board surface wear, the structure of the thick both ends taper-down gradually in the middle of the elastic ring makes its and pore wall contact lifting surface area increase, and horizontal fixed effect is better.

Description

Circuit board mounting structure for two-dimensional code learning machine

Technical Field

The utility model relates to a circuit board mounting structure especially relates to a circuit board mounting structure for two-dimensional code learning machine, belongs to electronic equipment technical field.

Background

In recent years, the appearance design of electronic products is more and more compact, the installation space of circuit boards is smaller and smaller, and meanwhile, the connection modes between the circuit boards are more and more diversified. Therefore, a stable and efficient circuit board fixing mode becomes a key for designing success of electronic products.

One way of fixing the circuit board is to place the circuit board directly on the housing fixing post and then fix the circuit board directly with the fixing hole on the fixing post by the fixing screw. This mainly has the following problems: firstly, the circuit board and the fixed column are in rigid connection, and after the circuit board is fixed, no flexible displacement space exists; secondly, the circuit board and the fixed column are in rigid connection, and the service life of the circuit board is influenced in a use scene with a vibration environment. Therefore, the method is not an optimal scheme for part of use scenes requiring flexible splicing and shockproof

In summary, how to effectively solve the problem of poor fixing effect of the current circuit board is a problem that needs to be solved urgently by the technical personnel in the field.

The application number is 201911358279.X, which discloses a circuit board fixing structure, wherein an elastic ring is compressed and deformed along the inner direction and the outer direction to radially expand, so that the transverse direction of a mounting hole is positioned, the elastic ring has a certain buffering effect on a circuit board, the circuit board is conveniently connected with other circuit boards, and meanwhile, the circuit board is effectively prevented from being damaged by impact. However, in the present invention, there are the following problems:

1. when the fastener is in a compressed state, the fastener is in direct contact with the outer surface of the circuit board, so that abrasion can be caused, and the circuit board can be damaged to a certain extent;

2. the elastic ring is cylindrical, and when the elastic ring is radially expanded, the height of the elastic ring is that the elastic ring can just contact the mounting hole after being compressed, so that the positioning contact area between the elastic ring and the mounting hole is small; when the height of the elastic ring is equal to the length of the elastic ring after the elastic ring is compressed and contacted with the mounting hole, folds are formed at two ends of the elastic ring, and the positioning effect of the two conditions on the transverse direction of the mounting hole is not good;

3. the fastener protrudes out of the circuit board, which affects the appearance and the operation when the circuit board is installed or connected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiencies of the prior art, the utility model provides a circuit board mounting structure for two-dimensional code learning machine.

The utility model adopts the technical proposal that: a circuit board mounting structure for a two-dimensional code learning machine comprises a mounting plate, a mounting column, a circuit board and a fastener, wherein an elastic ring is arranged in a mounting hole of the circuit board, the outer end of the elastic ring abuts against the fastener, the outer diameter of the elastic ring is smaller than the inner diameter of the mounting hole, and after the fastener is fastened, the periphery of the elastic ring is elastically expanded to abut against the wall of the mounting hole; the elastic ring comprises at least two thin-wall parts positioned at two ends of the elastic ring and at least one thick-wall part positioned in the middle, and the thin-wall part and the thick-wall part are integrally formed along the axial direction.

Furthermore, the middle part of the elastic ring is a cylindrical thick-walled part, and two thin-walled parts with gradually reduced outer diameters extend from two ends of the thick-walled part respectively.

Furthermore, a thick-walled part and two thin-walled parts at two ends of the thick-walled part of the elastic ring are a unit, and the unit forms the elastic ring along the axial direction; or the thin wall part and the thick wall part of the elastic ring are alternately spirally distributed along the axial direction to form the elastic ring.

Furthermore, the elastic ring also comprises a flange arranged at the outer end of the elastic ring, the flange is abutted to the fastener, and when the fastener is fastened, the flange is arranged between the outer end face of the mounting hole and the fastener.

Further, the outer end face of the mounting column is flush with the outer end face of the mounting hole.

Further, the outer end face of the mounting column is lower than the outer end face of the mounting hole, and the outer end face of the fastening piece is flush with the outer end face of the mounting hole when the fastening piece is fastened.

Further, the fastener is a countersunk bolt.

Furthermore, an elastic cushion is arranged between the mounting plate and the circuit board and is sleeved outside the mounting column; the elastic cushion, the mounting column and the elastic ring are coaxially arranged; the elastic pad is a rubber pad, and the elastic ring is a rubber ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through elastic ring along inside and outside direction compression deformation for radial expansion, and then realize fixing a position mounting hole transverse direction, and be the elastic ring, have certain cushioning effect to the circuit board, not only make things convenient for the circuit board to be connected with other circuit boards, avoid circuit board striking to damage simultaneously effectively.

2. The outer end of the elastic ring is provided with the flange, so that the problem of abrasion caused by direct contact of the fastener and the outer surface of the circuit board in the pressing process is avoided, and the long-term use of the circuit board is facilitated.

3. The cylinder of certain length is enclosed in the middle part of the elastic ring, and both ends are the boss that the wall thickness thins gradually, and when the fastener compressed tightly, elastic ring middle part cylinder radially expanded, and whole shaft offsets with the circuit board mounting hole pore wall, and the area of mutual contact is big, and elastic ring's horizontal fixed effect is more excellent, encloses the outer wall with the elastic ring and sets up to protruding groove combination, also is for same technological effect.

4. The fastener adopts the mode of countersunk head, and the fastener compresses tightly the back with the circuit board, and the outer terminal surface of fastener is parallel and level with the outer terminal surface of circuit board, reduces the influence to technical staff operation obstacle, and space utilization is more reasonable simultaneously.

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 of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the connection of the pan head fastener of the present invention.

Fig. 2 is a schematic view of the countersunk head fastener of the present invention.

Fig. 3 is a schematic view of the flanged elastic ring of the present invention.

Fig. 4 is a schematic cross-sectional view of the flanged elastic ring of the present invention.

Fig. 5 is a schematic view of the elastic ring of the present invention deformed 1.

Fig. 6 is a schematic view of the elastic ring of the present invention deformed by 2.

In the figure: 1-mounting plate, 2-elastic pad, 3-circuit board, 4-elastic ring, 41-thin wall part, 42-thick wall part, 43-flange, 5-mounting column and 6-fastening piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in 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 efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, in the description of the present invention, unless otherwise specified, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, when used in the orientation or positional relationship indicated in the drawings, are only used for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention.

Example 1

As shown in fig. 1 and 2: a circuit board mounting structure for a two-dimensional code learning machine, comprising: the mounting structure comprises a mounting plate 1, a mounting column 5, a circuit board 3 and a fastener 6, wherein an elastic ring 4 is arranged in a mounting hole of the circuit board 3, the outer end of the elastic ring 4 abuts against the fastener 6, the outer diameter of the elastic ring 4 is smaller than the inner diameter of the mounting hole, and after the fastener 6 is fastened, the periphery of the elastic ring 4 elastically expands to abut against the wall of the mounting hole; the elastic ring 4 comprises at least two thin-wall parts 41 positioned at two ends of the elastic ring and at least one thick-wall part 42 positioned in the middle of the elastic ring, the thin-wall parts 41 and the thick-wall part 42 are integrally formed along the axial direction, when the elastic ring is extruded, the thick-wall part is in contact with the hole wall, the contact stress area is large, and the transverse fixation is more stable.

As shown in fig. 3 and 4: the middle part of the elastic ring 4 is a cylindrical thick wall part 42, and two thin wall parts 41 with gradually reduced outer diameters extend from two ends of the thick wall part 42 respectively. The elastic ring 4 further comprises a flange 43 arranged at the outer end of the elastic ring, the flange 43 abuts against the fastener 6, and when the fastener 6 is fastened, the flange 43 is arranged between the outer end face of the mounting hole and the fastener 6, so that abrasion of the fastener to the surface of the circuit board is reduced. The outer end face of the mounting post 5 is flush with the outer end face of the mounting hole, the mounting post is stressed, pressing force of the outer end of the circuit board mounting hole is reduced, and the circuit board is protected.

One thick-walled part 42 of the elastic ring 4 and two thin-walled parts 41 at two ends of the thick-walled part 42 are a unit which forms the elastic ring 4 along the axial direction; or the thin wall part 41 and the thick wall part 42 of the elastic ring 4 are alternately distributed spirally along the axial direction to form the elastic ring 4; as shown in fig. 5 and 6, is more easily compressed into place.

As shown in fig. 2: the outer end face of the mounting column 5 is lower than the outer end face of the mounting hole, and when the fastening piece 6 is fastened, the outer end face of the fastening piece 6 is flush with the outer end face of the mounting hole. Fastener 6 adopts countersunk bolt, conveniently carries out subsequent operation on the circuit board, reduces and hinders.

An elastic pad 2 is arranged between the mounting plate 1 and the circuit board 3, and the elastic pad 2 is sleeved outside the mounting column 5; the elastic cushion 2, the mounting column 5 and the elastic ring 4 are coaxially arranged; the elastic pad 2 is a rubber pad, and the elastic ring 4 is a rubber ring.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A circuit board mounting structure for a two-dimensional code learning machine comprises a mounting plate (1), a mounting column (5), a circuit board (3) and a fastener (6), wherein an elastic ring (4) is arranged in a mounting hole of the circuit board (3), the outer end of the elastic ring (4) abuts against the fastener (6), the outer diameter of the elastic ring (4) is smaller than the inner diameter of the mounting hole, and after the fastener (6) is fastened, the periphery of the elastic ring (4) is elastically expanded to abut against the wall of the mounting hole; the method is characterized in that: the elastic ring (4) comprises at least two thin-wall parts (41) positioned at two ends of the elastic ring and at least one thick-wall part (42) positioned in the middle of the elastic ring, and the thin-wall parts (41) and the thick-wall part (42) are integrally formed along the axial direction.

2. The circuit board mounting structure for a two-dimensional code learning machine according to claim 1, characterized in that: the middle part of the elastic ring (4) is a cylindrical thick-wall part (42), and two thin-wall parts (41) with gradually reduced outer diameters extend from two ends of the thick-wall part (42) respectively.

3. The circuit board mounting structure for a two-dimensional code learning machine according to claim 1, characterized in that: one thick-walled part (42) of the elastic ring (4) and two thin-walled parts (41) at two ends of the thick-walled part (42) are a unit, and the unit forms the elastic ring (4) along the axial direction; or the thin wall part (41) and the thick wall part (42) of the elastic ring (4) are alternately distributed spirally along the axial direction to form the elastic ring (4).

4. The circuit board mounting structure for a two-dimensional code learning machine according to claim 2 or 3, characterized in that: the elastic ring (4) further comprises a flange (43) arranged at the outer end of the elastic ring, the flange (43) abuts against the fastener (6), and when the fastener (6) is fastened, the flange (43) is arranged between the outer end face of the mounting hole and the fastener (6).

5. The circuit board mounting structure for a two-dimensional code learning machine according to claim 4, characterized in that: the outer end face of the mounting column (5) is flush with the outer end face of the mounting hole.

6. The circuit board mounting structure for a two-dimensional code learning machine according to claim 2 or 3, characterized in that: the outer end face of the mounting column (5) is lower than the outer end face of the mounting hole, and the outer end face of the fastening piece (6) is flush with the outer end face of the mounting hole when the fastening piece (6) is fastened.

7. The circuit board mounting structure for a two-dimensional code learning machine according to claim 6, characterized in that: the fastener (6) adopts a countersunk bolt.

8. The circuit board mounting structure for a two-dimensional code learning machine according to claim 5 or 7, characterized in that: an elastic pad (2) is arranged between the mounting plate (1) and the circuit board (3), and the elastic pad (2) is sleeved outside the mounting column (5); the elastic cushion (2), the mounting column (5) and the elastic ring (4) are coaxially arranged; the elastic pad (2) is a rubber pad, and the elastic ring (4) is a rubber ring.