Inner and outer side contact type tulip contact

Abstract

The utility model provides an inner and outer side contact type tulip contact, and belongs to the technical field of electrical components. The inner and outer side contact type bidirectional tulip contact solves the problems that an existing inner and outer side contact type bidirectional tulip contact is inconvenient to use and has potential safety hazards. The inner and outer side contact type tulip contact comprises contact pieces, an annular support and a spring, and the contact pieces are evenly installed on the annular support to form an annular array; an outer contact, a first spring groove, a second spring groove and a fixed spring groove are sequentially formed on the outward side of the contact piece from top to bottom, an inner spring groove, an inner contact and a grid piece are sequentially formed on the inward side of the contact piece from top to bottom, a pressure spring is installed in the inner spring groove, and movable tension springs are installed in the first outer spring groove and the second outer spring groove in a matched mode. And a fixed tension spring is mounted in the fixed spring groove. The utility model has the advantages of strong practicability and high safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical components, and relates to a plum blossom contact, in particular to an inside and outside contact type plum blossom contact. Background Art

[0002] The plum blossom contact is a commonly used electronic component contact. It contacts with the metal contacts on the circuit board through the plum blossom-shaped contacts, so as to realize electrical connection and signal transmission. Under the existing technology, the plum blossom contact is usually an inner contact type unidirectional plum blossom contact under the action of the outer tension spring, and its applicability is not wide enough to meet the product requirements with different movable contacts.

[0003] The patent with the application number CN202121103282.X discloses an inside and outside contact type bidirectional plum blossom contact, which includes a structural bracket, contact pieces, a pressure spring and a tension spring. The structural bracket is composed of an inner spring groove piece, an outer spring groove piece and a connecting pin connecting the two. One end of the contact piece is provided with an inner contact, an inner contact piece groove and an inner spring groove, and the other end is provided with an outer contact, an outer contact piece groove and an outer spring groove. The inner contact piece groove and the outer contact piece groove are respectively clamped on the inner spring groove piece and the outer spring groove piece. The tension spring is installed on the inner spring groove, and the pressure spring is installed on the outer spring groove.

[0004] The problems existing in this patent are as follows: If it is necessary to change the inside and outside contact mode after installation, the whole plum blossom contact needs to be removed for turning installation, which is inconvenient to use; when an arc is generated between the contacts, there is no corresponding arc extinguishing method, and there are potential safety hazards during use. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a plum blossom contact that can realize the contact of inside and outside contacts, does not need to be turned for installation when changing the contact mode, and has higher safety, aiming at the above problems existing in the prior art.

[0006] The purpose of the utility model can be realized by the following technical solutions: An inside and outside contact type plum blossom contact includes a contact piece, an annular bracket and a spring. A plurality of contact piece grooves opening outwards in the circumferential direction are equidistantly arranged on the annular bracket, and the contact piece is uniformly fixed on the annular bracket by being inserted into the contact piece grooves.

[0007] On the outer side of the contact piece, an outer contact, a first outer spring groove, a second outer spring groove and a fixed spring groove are formed in sequence from top to bottom. On the inner side, an inner spring groove, an inner contact and a grid piece are formed in sequence from top to bottom. A pressure spring is installed in the inner spring groove and is correspondingly matched with the outer contact. The first outer spring groove is correspondingly matched with the inner contact. The second outer spring groove and the fixed spring groove are correspondingly matched with the grid piece. A movable tension spring is installed in the first outer spring groove and the second outer spring groove in a matching manner, and a fixed tension spring is installed in the fixed spring groove.

[0008] In the above-mentioned inside and outside contact type plum blossom contact, a support groove is provided between the inner contact and the grid piece on the inner side of the contact piece, and the support groove is located between the first outer spring groove and the second outer spring groove. The support groove is inserted into the annular support through the contact piece groove.

[0009] In the above-mentioned inside and outside contact type plum blossom contact, both the outer contact and the inner contact are arc-shaped convex structures.

[0010] In the above-mentioned inside and outside contact type plum blossom contact, the outer contact pressure provided by the pressure spring to the outer contact is less than the inner contact pressure provided by the moving tension spring when it is on the first outer spring groove to the inner contact.

[0011] Compared with the prior art, in an inside and outside contact type plum blossom contact provided by the present utility model, by arranging an outer contact and an inner contact at the same end of the contact piece of the plum blossom contact, the inside and outside contact modes of the plum blossom contact can be switched according to actual needs after installation without disassembly and turning, which is more practical; by arranging a grid piece at the other end of the contact piece of the plum blossom contact, when an arc is generated between the contacts, the arc can be drawn into the grid piece under the action of the contraction force of the magnetic lines of force and thus extinguished, ensuring the safety of the plum blossom contact during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the overall structural schematic diagram of this inside and outside contact type plum blossom contact;

[0013] Figure 2 is the disassembled structural schematic diagram of this inside and outside contact type plum blossom contact;

[0014] Figure 3 is the structural schematic diagram of the contact piece in this inside and outside contact type plum blossom contact.

[0015] In the above figures, 100, contact piece; 110, outer contact; 111, inner spring groove; 120, inner contact; 121, first outer spring groove; 122, second outer spring groove; 130, support groove; 140, grid piece; 141, fixed spring groove; 200, annular support; 210, contact piece groove; 310, pressure spring; 320, moving tension spring; 330, fixed tension spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following are specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0017] As Figures 1 to 3As shown in the figure, this inside-outside contact type plum blossom contactor includes a contact piece 100, an annular bracket 200, and a spring. The contact pieces 100 are evenly fixed on the annular bracket 200 to form an annular array. The spring includes a compression spring 310, a movable tension spring 320, and a fixed tension spring 330. Among them, the compression spring 310 is installed inside the contact piece 100, and the movable tension spring 320 and the fixed tension spring 330 are sleeved outside the contact piece 100.

[0018] As Figure 3 shown, on the outer side of the contact piece 100 from top to bottom, there are formed an outer contact 110, a first outer spring groove 121, a second outer spring groove 122, and a fixed spring groove 141 in sequence. On the inner side from top to bottom, there are formed an inner spring groove 111, an inner contact 120, and a grid piece 140 in sequence. Both the outer contact 110 and the inner contact 120 are arc-shaped convex structures. The setting of the grid piece 140 enables that when an arc is generated between the contactors, the arc is drawn into the grid piece 140 under the action of the contraction force of the magnetic lines of force, and a long arc is divided into multiple short arcs. When the alternating current passes through zero, all the short arcs are extinguished simultaneously, ensuring the safety of the plum blossom contactor during use.

[0019] The compression spring 310 is installed in the inner spring groove 111 and is correspondingly matched with the outer contact 110. The compression spring 310 generates an outward pressure based on the elastic force of its own compression and reset, providing an outer contact pressure for the outer contact 110. The fixed tension spring 330 is installed in the fixed spring groove 141 and is correspondingly matched with the grid piece 140. The fixed tension spring 330 generates an inward pressure based on the elastic force of its own contraction and reset, and tightly fixes the grid piece 140.

[0020] The first outer spring groove 121 is correspondingly matched with the inner contact 120, and the second outer spring groove 122 is correspondingly matched with the grid piece 140. The movable tension spring 320 is installed in the first outer spring groove 121 and the second outer spring groove 122 in a matching manner. When the movable tension spring 320 is installed in the first outer spring groove 121, the movable tension spring 320 generates an inward pressure based on the elastic force of its own contraction and reset, providing an inner contact pressure for the inner contact 120. And the inner contact pressure provided by the movable tension spring 320 to the inner contact 120 should be greater than the outer contact pressure provided by the compression spring 310 to the outer contact 110, so that the inner contact is good when the plum blossom contactor adopts the inner contact method. When the movable tension spring 320 is installed in the second outer spring groove 122, the inward pressure generated by the movable tension spring 320 and the fixed tension spring 330 together tightly fix the grid piece 140. At this time, the outer contact 110 opens outward under the action of the compression spring 310 to achieve good outer contact.

[0021] As Figure 2As shown, a plurality of contact piece grooves 210 opening outwards in the circumferential direction are equidistantly arranged on the annular bracket 200. On the inner side of the contact piece 100 between the inner contact point 120 and the grid piece 140, a bracket groove 130 is provided. The bracket groove 130 is located between the first outer spring groove 121 and the second outer spring groove 122. During installation, the bracket groove 130 of the contact piece 100 passes through the contact piece groove 210 of the annular bracket 200 and is inserted at the continuous part on the inner side of the annular bracket 200, so that the contact piece 100 is detachably fixed on the annular bracket 200.

[0022] The working principle of the present utility model is as follows: when the movable tension spring 320 is located in the first outer spring groove 121, the plum blossom contact is in the inner contact state. Since the inner contact pressure provided by the movable tension spring 320 to the inner contact point 120 is greater than the outer contact pressure provided by the pressure spring 310 to the outer contact point 110, the inner contact point 120 contracts inwards, so that it has good contact with the contact installed on the inner side.

[0023] When the movable tension spring 320 is located in the second outer spring groove 122, the plum blossom contact is in the outer contact state. At this time, the movable tension spring 320 and the fixed tension spring 330 jointly provide an inward pressure to the grid piece 140, so that the outer contact point 110 at the other end has a tendency to open outwards. Coupled with the outer contact pressure provided by the pressure spring 310 to the outer contact point 110, the outer contact point 110 can have good contact with the contact sleeved on the outer side.

[0024] The switching between the inner and outer contact states only needs to move and replace the movable tension spring 320 between the first outer spring groove 121 and the second outer spring groove 122, which is convenient and fast and has strong practicability.

[0025] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0026] Although various terms are used more in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. An inside-outside contact type plum blossom contactor, comprising contact pieces (100), an annular bracket (200) and springs. A plurality of contact piece grooves (210) opening outwards in the circumferential direction are equidistantly formed on the annular bracket (200), and the contact pieces (100) are uniformly fixed on the annular bracket (200) by being inserted into the contact piece grooves (210). It is characterized in that On the outer side of the contact piece (100), an outer contact point (110), a first outer spring groove (121), a second outer spring groove (122) and a fixed spring groove (141) are sequentially formed from top to bottom. On the inner side, an inner spring groove (111), an inner contact point (120) and a grid piece (140) are sequentially formed from top to bottom. A pressure spring (310) is installed in the inner spring groove (111) and is correspondingly matched with the outer contact point (110). The first outer spring groove (121) is correspondingly matched with the inner contact point (120). The second outer spring groove (122) and the fixed spring groove (141) are correspondingly matched with the grid piece (140). A movable tension spring (320) is installed in the first outer spring groove (121) and the second outer spring groove (122) in a matching manner, and a fixed tension spring (330) is installed in the fixed spring groove (141).

2. The inside and outside contact type plum blossom contact according to claim 1, characterized in that, On the inner side of the contact piece (100), a bracket groove (130) is formed between the inner contact point (120) and the grid piece (140). The bracket groove (130) is located between the first outer spring groove (121) and the second outer spring groove (122). The bracket groove (130) passes through the contact piece groove (210) and is inserted on the annular bracket (200).

3. The inner and outer contact type plum blossom contact according to claim 1, characterized in that, Both the outer contact point (110) and the inner contact point (120) are arc-shaped convex structures.

4. The inside and outside contact type plum blossom contact according to claim 1, characterized in that The outer contact pressure provided by the pressure spring (310) to the outer contact point (110) is less than the inner contact pressure provided by the movable tension spring (320) when it is in the first outer spring groove (121) to the inner contact point (120).

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