Crown spring

Abstract

The utility model discloses a crown spring which is in a non-closed ring shape and comprises a plurality of elastic pieces distributed at intervals in a ring shape and a connecting belt integrally connected with one ends of all the elastic pieces, the middle portions of the elastic pieces are bent from outside to inside to form protruding elastic contact portions, and the other ends of every two adjacent elastic pieces are disconnected and distributed at intervals. The other end of each elastic piece is bent from inside to outside to form a conductive elastic arm, and the conductive elastic arms of all the elastic pieces are annularly distributed at intervals. According to the utility model, the other end of the elastic sheet is not provided with or not connected with a material belt, so that the other end of the elastic sheet is in an independent state, the other end of the elastic sheet is bent from inside to outside to form the conductive elastic arm, the conductive elastic arm realizes the functions of conduction and supporting positioning, and the material belt is omitted, so that the width of the material belt is saved; the elastic force arm L of the elastic piece extends to the top end of the crown spring, so that the elastic force arm L of the elastic piece is lengthened, the elasticity of the whole crown spring is better, the service life is longer, and the force used when a plug is plugged relative to the crown spring is smaller.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connector, especially a crown spring which is used as the conductive element of electric connector. BACKGROUND

[0002] The crown spring of electric connector is used for realizing the conductive contact terminal connected with the pin in electric connector, and is widely used in electronic and electrical equipment.

[0003] As shown in Figure 1 The crown spring 1 is non-closed loop, which includes a plurality of interval distribution elastic sheet 11, first connecting band 12 and second connecting band 13 connected with the upper end of all elastic sheet 11 and the lower end of all elastic sheet 11, the middle part of elastic sheet 11 is curved from outside to inside to form elastic contact part 111, and the guide space for plug insertion is formed between all elastic sheet 11.

[0004] The first connecting band 12 and the second connecting band 13 are non-closed loop, and the functions are as follows: 1, for connecting the upper end and the lower end of all elastic sheet 11 together to form a whole; 2, also as conductive structure.

[0005] In specific use, as shown in Figures 2-3 The crown spring 1 is compressed from outside to inside and loaded into the plug-in hole 21 of the counter seat 2, and the crown spring 1 is reset to expand from inside to outside after entering the plug-in hole 21 completely, so that the crown spring 1 is pressed into the limiting groove 22 arranged on the inner wall of the plug-in hole 21, and then the crown spring 1 is stably positioned in the plug-in hole 21.

[0006] In the case that the length of the limiting groove 22 of the counter seat 2 is unchanged, the width of the first connecting band 12 and the second connecting band 13 occupies a certain length of the crown spring 1, so that the elastic arm length of the elastic sheet 11 is compressed, that is, the elastic arm length of the elastic sheet 11 is shortened, and then the elasticity of the elastic sheet 11 is deteriorated, so that when the male head passes through the plug-in hole 21 of the counter seat 2 to insert into the guide space of the crown spring 1, a larger force is needed, and when the male head is pulled out relative to the crown spring 1, a larger force is also needed, which leads to unsmooth insertion and extraction, inconvenient operation, and certain disturbance to users.

[0007] Therefore, the present application provides the following technical scheme. UTILITY MODEL CONTENTS

[0008] The utility model aims at overcoming the defects of prior art, and provides a crown spring.

[0009] In order to solve the above technical problems, the utility model adopts the following technical scheme: the crown spring is annular, the crown spring includes a plurality of annular interval distribution elastic sheets and a connecting band integrally connected with one end of all the elastic sheets, the middle part of the elastic sheet is curved outwardly to form a raised elastic contact part, the other end of the adjacent two elastic sheets is disconnected to be interval distributed, and the other end of the elastic sheet is further bent inwardly to form a conductive elastic arm, and the conductive elastic arms of all the elastic sheets are annular interval distributed.

[0010] Further, in the above technical scheme, the conductive elastic arm is vertical, and a first interval is formed between the inner side of the conductive elastic arm and the outer side of the other end of the elastic sheet.

[0011] Further, in the above technical scheme, the connecting band is vertical, and a first contact surface on the outer side of the conductive elastic arm corresponds to a second contact surface on the outer side of the connecting band and forms a perpendicular projection relationship.

[0012] Further, in the above technical scheme, a buckle ring is further included, the buckle ring connects the conductive elastic arms of all the elastic sheets together, and the interval between the adjacent two elastic sheets is fixed.

[0013] Further, in the above technical scheme, the buckle ring is annular, and a first opening formed at the two ends of the buckle ring corresponds to a second opening formed at the two ends of the connecting band.

[0014] Further, in the above technical scheme, the buckle ring is arranged between the inner side of the conductive elastic arm and the outer side of the other end of the elastic sheet, the outer side of the buckle ring is in abutting contact with the inner side of the conductive elastic arm, and a second interval is formed between the inner side of the buckle ring and the outer side of the other end of the elastic sheet.

[0015] Further, in the above technical scheme, the buckle ring is provided with a plurality of positioning holes, the end of the conductive elastic arm is bent inwardly to form a buckle body, the buckle body is pressed into the positioning hole, and the conductive elastic arm is connected with the buckle ring.

[0016] Further, in the above technical scheme, the crown spring is arranged in a mating seat, the mating seat is provided with a plug hole for inserting the plug, and a limiting groove is arranged in the inner wall of the plug hole; the crown spring is compressed outwardly and then arranged in the limiting groove through the plug hole, and the second contact surface of the connecting band and the first contact surface of the conductive elastic arm are positioned against the inner wall of the limiting groove under the action of the elastic force.

[0017] Further, in the above technical scheme, the mating seat is provided with external threads for mounting.

[0018] Further, in the above technical scheme, the mating seat is provided with a tool groove.

[0019] After the above technical scheme is adopted, the utility model has the following beneficial effects compared with the prior art:

[0020] 1. In this utility model, the other end of the spring is not provided with or connected to the material strip, that is, the material strip is disconnected, so that the other end of the spring is in an independent state, and a conductive spring arm is formed by bending from the inside to the outside at the other end of the spring. This conductive spring arm realizes the functions of conducting electricity and supporting positioning. Since the material strip is eliminated, the width of the material strip can be saved, and the elastic lever arm L of the spring can be extended to the top of the crown spring, thereby lengthening the elastic lever arm L of the spring, thus making the elasticity of the entire crown spring better and the service life longer. At the same time, when the plug is inserted into the crown spring, after the plug contacts the elastic contact part of the spring, it can better compress the spring to drive the spring to form elastic deformation, and the required force is relatively small. Similarly, when the plug is pulled out relative to the crown spring, a small force is also required, so as to have the advantages of smooth insertion and removal and convenient operation.

[0021] 2. This utility model also connects the conductive spring arms of all the spring pieces together by means of a buckle, so that the distance between two adjacent spring pieces is fixed. At the same time, the buckle can prevent the spring pieces from being deformed accidentally, thereby ensuring that the crown spring becomes more stable and its quality is better. Attached image description:

[0022] Figure 1 This is a 3D diagram of a crown spring in the prior art;

[0023] Figure 2 This is an assembly drawing of the crown spring and the mating seat in the existing technology;

[0024] Figure 3 This is a cross-sectional view of the assembly of the crown spring and the mating seat in the prior art;

[0025] Figure 4 This is a perspective view of the present invention;

[0026] Figure 5 This is a perspective view of the present invention from another angle;

[0027] Figure 6 This is a perspective view of the present invention after the addition of the buckle;

[0028] Figure 7 This is an exploded perspective view of the present invention after the addition of the buckle;

[0029] Figure 8 This is an assembly drawing of the utility model and the docking seat;

[0030] Figure 9 This is an assembly cross-sectional view of the present invention and the docking seat.

[0031] Explanation of reference numerals in the attached figures:

[0032] Crown spring 1, spring piece 11, elastic contact part 111

[0033] First connecting band 12 Second connecting band 13 Docking seat 2

[0034] Plug-in hole 21 Limiting groove 22 Crown spring 3

[0035] Elastic sheet 31 Elastic contact part 311 Connecting band 32

[0036] Second opening 320 Second contact surface 321 Conductive elastic arm 33

[0037] First contact surface 331 Buckle body 332 Buckle ring 4

[0038] First opening 41 Positioning hole 42 Docking seat 5

[0039] Plug-in hole 51 Limiting groove 52 External thread 53

[0040] Tool groove 54 Elastic force arm L DETAILED DESCRIPTION

[0041] The utility model will be further explained in connection with specific embodiments and drawings.

[0042] As shown in Figures 4-9 , it is a crown spring which serves as a conductive element of an electric connector.

[0043] As shown in Figures 4-5 , the crown spring is in a non-closed ring shape, and the crown spring 3 comprises a plurality of elastic sheets 31 distributed in a ring shape at intervals and a connecting band 32 integrally connected with one end of all the elastic sheets 31, and the elastic sheet 31 has a raised elastic contact part 311 curved from outside to inside in the middle part, when a plug is inserted into the crown spring 3, the conductor of the plug contacts the elastic contact part 311, at this time, the elastic contact part 311 is compressed from inside to outside to form an elastic force from outside to inside, so that the elastic contact part 311 and the conductor of the plug form elastic pressure contact, ensuring the stability of conduction.

[0044] In this embodiment, one end of the elastic sheet 31 refers to the upper end of the elastic sheet 31, and the other end of the elastic sheet 31 refers to the lower end of the elastic sheet 31, as shown in Figure 4 .

[0045] The main improved structure of this utility model is as follows: the other end of two adjacent spring pieces 31 is broken and distributed at intervals, and the other end of the spring piece 31 is also bent from the inside to the outside to form a conductive spring arm 33, and the conductive spring arms 33 of all spring pieces 31 are distributed in a ring at intervals. In other words, in this utility model, the other end of the spring piece 31 is not provided with or connected to the material strip, that is, the material strip is disconnected, so that the other end of the spring piece 31 is in an independent state, and a conductive spring arm 33 is formed by bending from the inside to the outside at the other end of the spring piece 31. The conductive spring arm 33 realizes the functions of conducting electricity and supporting positioning. Since the material strip is eliminated, the width of the material strip can be saved, and the elastic lever arm L of the spring piece 31 can be extended to the top of the crown spring 3, thereby lengthening the elastic lever arm L of the spring piece 31, thus making the elasticity of the entire crown spring 3 better and the service life longer. At the same time, when the plug is inserted into the crown spring 3, after the plug contacts the elastic contact part 311 of the spring piece 31, it can better compress the spring piece 31 to drive the spring piece 31 to form an elastic deformation. The required force is relatively small. Similarly, when the plug is pulled out relative to the crown spring 3, a small force is also required, so as to have the advantages of smooth insertion and removal and convenient operation.

[0046] The conductive elastic arm 33 is vertical, and its inner side forms a first gap with the outer side of the other end of the elastic piece 31, so that the other end of the elastic piece 31 can use the conductive elastic arm 33 as a fulcrum to form elastic deformation, thereby increasing the length of the elastic lever arm.

[0047] The connecting band 32 is vertical. The first contact surface 331 on the outer side of the conductive spring arm 33 corresponds to the second contact surface 321 on the outer side of the connecting band 32 and forms an orthographic projection relationship. So that when the crown spring 3 is installed in the docking seat 5, the first contact surface 331 on the outer side of the conductive spring arm 33 and the second contact surface 321 on the outer side of the connecting band 32 are pressed and positioned against the limiting groove 52 in the docking seat 5, ensuring that the crown spring 3 is stably assembled in the docking seat 5.

[0048] In practical use, this utility model, in combination with Figures 8-9 As shown, the crown spring 3 is installed in the mating seat 5, which has a mating hole 51 for inserting a plug, and a limiting groove 52 is recessed in the inner wall of the mating hole 51. After being compressed from the outside to the inside, the crown spring 3 passes through the mating hole 51 and is installed in the limiting groove 52. The spring piece 31 and the connecting band 32 both have an elastic force from the inside to the outside, so that the second contact surface 321 of the connecting band 32 and the first contact surface 331 of the conductive spring arm 33 abut against the inner wall of the limiting groove 52 under their own elastic force, thus achieving the function of support and positioning, so that the crown spring 3 is confined in the limiting groove 52, thereby ensuring a stable assembly between the crown spring 3 and the mating seat 5. In this embodiment, the mating seat 5 is a metal seat with a conductive function. When the connecting band 32 and the conductive spring arm 33 of the crown spring 3 are in contact with the mating seat 5, the crown spring 3 and the mating seat 5 form an electrical connection.

[0049] The docking seat 5 is provided with external threads 53 for installation, and is screw assembled with another member of the electrical connector through the external threads 53, which is more convenient to assemble.

[0050] In addition, in order to make the crown spring 3 more stable and ensure better product quality, the following design is made: the utility model further comprises a buckle 4, which connects the conductive elastic arms 33 of all the elastic sheets 31 together, fixes the spacing between the two adjacent elastic sheets 31, and prevents the elastic sheets from being deformed accidentally, thereby making the crown spring 3 more stable and having better quality. Figures 6-7

[0051] As shown in the combination Figure 7 The buckle 4 is also in a non-closed ring shape, and the first openings 41 formed at both ends of the buckle 4 are distributed correspondingly with the second openings 320 formed at both ends of the connecting bands 32, so that the buckle 4 does not affect the compression deformation of the entire crown spring 3 from the outside to the inside, that is, when the crown spring 3 is compressed from the outside to the inside, the second openings 320 formed at both ends of the connecting bands 32 will be reduced, and at the same time, the first openings 41 formed at both ends of the buckle 4 will also be reduced, thereby ensuring that the crown spring 3 can be used normally.

[0052] The buckle 4 is arranged between the inner side of the conductive elastic arm 33 and the outer side of the other end of the elastic sheet 31, which does not affect the elastic arm length of the elastic sheet 31, and also does not affect the abutting positioning of the first contact surface 331 on the outer side of the conductive elastic arm 33 and the inner wall of the limiting groove 52, and the outer side surface of the buckle 4 is in abutting contact with the inner side surface of the conductive elastic arm 33, which ensures the stability of the assembly structure, and the buckle 4 can be in a compressed state, so that the buckle 4 has an expansion force from the inside to the outside, thereby better supporting the conductive elastic arms 33 of all the elastic sheets 31, thereby achieving the purpose of stable positioning of the conductive elastic arms 33, and the inner side surface of the buckle 4 and the outer side surface of the other end of the elastic sheet 31 form a second spacing, so that the buckle 4 does not affect the elastic sheet 31 to have enough space to form elastic deformation when working normally.

[0053] The buckle 4 is provided with a plurality of positioning holes 42, and the conductive elastic arm 33 is bent from the outside to the inside to form a buckle body 332, which is pressed into the positioning hole 42, so that the conductive elastic arm 33 is connected with the buckle 4, and all the conductive elastic arms 33 of the elastic sheets 31 are connected and positioned together to form a ring structure.

[0054] ​In summary, the utility model discloses the other end of the elastic sheet 31 is not set or is not connected with the material band, i. e. disconnects the material band, makes the other end of the elastic sheet 31 be in the independent state, and the other end of the elastic sheet 31 is bent and is formed with the conductive elastic arm 33 from inside to outside, the conductive elastic arm 33 realizes the function of conductive and support positioning, because cancels the material band, can save the width of the material band, makes the elastic force arm L of the elastic sheet 31 extend to the top end of the crown spring 3, in this way lengthens the elastic force arm L of the elastic sheet 31, and further makes the elasticity of the whole crown spring 3 better, and the service life is longer, simultaneously, when the plug is inserted into the crown spring 3, the plug can better compress the elastic sheet 31 to drive the elastic sheet 31 to form the elastic deformation after being contacted with the elastic contact part 311 of the elastic sheet 31, and the required force is relatively small, similarly, when the plug is pulled out relative to the crown spring 3, also needs the smaller force, so that has the advantage that insertion and extraction are smooth, and the operation is convenient.

[0055] Of course, the above only for the specific embodiment of the utility model has been, and not to limit the utility model implementation range, all equivalent changes or modifications of the structure, features and principles of the utility model application patent range described, should be included in the utility model application patent range.

Claims

1. A crown spring in the form of an open ring, comprising a plurality of spring pieces arranged in a ring shape at intervals, and a connecting band integrally connected to one end of all the spring pieces, the middle part of each spring piece being bent from outside to inside to form a raised elastic contact part, characterized in that: the other end of each spring piece is disconnected to be arranged at intervals, and the other end of each spring piece is further bent from inside to outside to form a conductive spring arm, and the conductive spring arms of all the spring pieces are arranged in a ring shape at intervals. The conductive spring arm is in a vertical shape, and a first interval is formed between the inner side of the conductive spring arm and the outer side of the other end of the spring piece.

2. The crown spring of claim 1, wherein: The connecting band is in a vertical shape, and a first contact surface on the outer side of the conductive spring arm corresponds to a second contact surface on the outer side of the connecting band to form a right projection relationship.

3. The crown spring of claim 2, wherein: Further comprising a clasp ring, which connects the conductive spring arms of all the spring pieces together to fix the interval between adjacent spring pieces.

4. The crown spring according to any one of claims 1-3, characterized in that: The clasp ring is in the form of an open ring, and first openings formed at both ends of the clasp ring correspond to second openings formed at both ends of the connecting band.

5. The crown spring of claim 4, wherein: The clasp ring is arranged between the inner side of the conductive spring arm and the outer side of the other end of the spring piece, and the outer side of the clasp ring is in abutting contact with the inner side of the conductive spring arm, and a second interval is formed between the inner side of the clasp ring and the outer side of the other end of the spring piece.

6. The crown spring of claim 4, wherein: The clasp ring is provided with a plurality of positioning holes, and the end of the conductive spring arm is bent from outside to inside to form a clasp body, which is pressed into the positioning hole to connect the conductive spring arm and the clasp ring.

7. The crown spring of claim 4, wherein: The crown spring is inserted into a mating seat, the mating seat has a mating hole for inserting a plug, and a limiting groove is recessed in the inner wall of the mating hole; the crown spring is compressed from outside to inside and then inserted into the limiting groove through the mating hole, and the second contact surface of the connecting band and the first contact surface of the conductive spring arm are positioned against the inner wall of the limiting groove under the action of their own elastic force.

8. The crown spring of claim 4, wherein: The mating seat is provided with external threads for mounting.

9. The crown spring of claim 8, wherein: The mating seat is provided with a tool groove.

10. The crown spring of claim 9, wherein: ​

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