CN2508419Y - connector for memory card - Google Patents

Abstract

The utility model relates to a connector of a memory card, which comprises a connector main body, a detection mechanism and a detection mechanism, wherein the connector main body is provided with an insulating frame and a plurality of metal electrodes arranged on a bottom plate of the frame, one end of any metal electrode is connected with a circuit of a circuit board, the other end of any metal electrode is upwards tilted and has elasticity for contacting with a golden finger of the memory card, the detection mechanism comprises a metal shell, a metal elastic sheet and a detection terminal, the metal shell surrounds the connector main body and is electrically connected with the circuit of the circuit board, one end of the metal elastic sheet is connected with the metal shell, and the detection terminal is inserted in the frame of the connector main body and is connected with the circuit of the circuit board. The utility model discloses have the efficiency that can avoid the short circuit, prevent the pine and take off.

Description

connector for memory card

technical field

The utility model relates to a connector, in particular to a connector which can be installed with a memory card to prevent the memory card from loosening and prevent the short circuit of the memory card from being improperly connected.

Background technique

With the rapid development of digital technology and the information industry, the use of digital products has become very popular. There are so-called memory cards (Memory Card) in many electronic products such as notebook computers, digital cameras, digital video cameras, personal secretary assistants (PDAs), and mobile phones. The broad definition of a memory card refers to an integrated circuit chip (IC CHIP), which looks like a card and has the function of recording digital data. Memory card products can be divided into contact memory cards and non-contact memory cards. Most memory cards are contact type, such as the above-mentioned memory cards used in various information or digital products. Type memory cards are widely used in, for example, low-cost access control identification systems.

The specifications of many common memory cards are different. For example, the user identification cards commonly used in various types of mobile phones, the flash memory cards used in most digital cameras or digital video cameras, or IC financial cards are all contact type. Representative products of IC cards, among which CF cards and SIM cards are the most important memory cards. The memory card must be connected with the above-mentioned electronic product through a special memory card connector, in order to communicate with the electronic product and use the digital data recorded therein. Traditional connectors do not have any design to prevent short circuits. After the memory card is inserted into the connector, it may come into contact with other similar electronic components and cause a short circuit; on the other hand, there is no safety design to ensure that the memory card has been correctly plug-in connector.

In order to solve the above problems, an improved special connector for memory card is designed. Its structure is shown in Figure 3. An iron shell 20 is installed on the outside of the original connector 10. This iron shell 20 is connected to the circuit board of the circuit board. Grounding can prevent the memory card from being short-circuited by contact with other similar electronic components; on the other hand, the improver also designed a detection mechanism, which can connect the connector and the circuit after detecting that the memory card is correctly inserted into the connector The circuit of the board, this detection mechanism includes a detection terminal 21 connected in the circuit of the circuit board, and a shrapnel 22 connected with the iron shell 20, when the memory card is not inserted into the connector 10, the shrapnel 22 Will not be in contact with the detection terminal 21, so the circuit of the connector 10 cannot be grounded and cannot start the circuit to work. This shrapnel 2210 is designed at the end position where the memory card is correctly inserted into the connector, and it can be inserted and connected by the memory card. The insertion force of the connector 10 is directly pushed (see Figure 3), more clearly, that is, the shrapnel 20 reciprocates along the direction in which the memory card is inserted into the connector 10, once the memory card is not fully inserted into the connector When the connector 10 is at the deepest point, the shrapnel 22 will not be in contact with the detection terminal 21, and the circuit of the connector 10 will not be activated.

However, in actual use, it can be found that the memory card tends to loosen due to the vibration that occurs during the movement of the electronic product. When this shrapnel 22 is in contact with the detection terminal 21, its design will just push out the memory card. A little push in the direction of the card increases the chances of the card becoming loose. Therefore, with the existing design of the connector 10 , it is difficult to prevent the memory card from getting loose or even malfunctioning, and the user cannot find the real cause of the problem.

Contents of the invention

The purpose of this utility model is to provide a special connector for memory card which can prevent short circuit of the memory card circuit, and prevent the memory card from loosening at the same time, so as to overcome the above-mentioned defects of the prior art.

The purpose of this utility model is achieved by the following technical means: a memory card connector, which is characterized in that it includes: a connector body with an insulating frame and several metal electrodes installed on the bottom plate of the frame, One end of any one metal electrode is connected with the circuit of the circuit board, and the other end of any one metal electrode is upturned and has elasticity, and is used for contacting with the golden finger of the memory card; a detection mechanism includes: a metal shell, A metal shrapnel and a detection terminal, the metal shell surrounds the connector body and is electrically connected to the circuit on the circuit board, one end of the metal shrapnel is connected to the metal shell, the detection terminal is inserted into the frame of the connector body and connected to the Circuit board connections.

The edge of the metal shell of the connector of the memory card is extended with a welding point, which is used for welding to the circuit of the circuit board and has the function of fixing the metal shell. The free end of the metal shrapnel is curved and at least a part extends to the moving path when the memory card is inserted into the connector body, so as to be pushed by the inserted memory card and contact the detection terminal. A contact point is provided at the position where the free end surface of the metal elastic piece in the connector contacts with the detection terminal. The connector includes an anti-off mechanism. The anti-off mechanism is composed of two pliers arms located on opposite sides of the memory card. As a result, the memory card inserted into the main body of the connector is clamped by the elastic force generated by the metal material after bending. The connector is also provided with an anti-off device, the device is a pair of pliers arms, the pair of pliers arms is bent toward the direction of the memory card inserted into the connector body, and its surface is a contact surface with high friction. The high-friction contact surface is a wavy surface, or a jagged surface, or a set of road surfaces, or has a layer of high-friction material on the surface, and the high-friction material is rubber.

The utility model has the advantages of not being loose and short-circuited.

Description of drawings

FIG. 1 is an exploded view of a conventional memory card connector.

FIG. 2 is a partial structural diagram of a conventional memory card connector.

FIG. 3 is a schematic diagram of the action relationship between the shrapnel and the detecting terminal of the conventional memory card connector.

Figure 4 is an exploded view of the structure of the utility model.

FIG. 5 is a schematic diagram of the usage state of the present invention (showing the relationship between the memory card connector and the memory card connection).

6 and 7 are cross-sectional views of the structure of FIG. 5 at the position A-A' (respectively showing the situation that the memory card is not inserted and inserted into the connector body).

FIG. 8 and FIG. 9 are schematic diagrams of the usage state of the present invention (showing the situation that the memory card is not inserted and inserted into the connector body).

Detailed ways

Below in conjunction with accompanying drawing and embodiment the structure of the present utility model is described further.

As shown in Figure 4, the special memory card connector designed by the utility model includes: a connector body 30, which is basically composed of an insulating frame 31 and several shrapnel-type metal elements installed on the bottom plate 310 of the frame. These metal electrodes 32 are respectively inserted into several slots 311 of the bottom plate 310 of the frame 31, the metal electrodes 32 are bent into a warped shape, and the front ends 321 of the metal electrodes 32 extend obliquely downward for Soldering is located on the circuit of the circuit board below the connector main body 30 (not shown in the figure), and the end 322 of the metal electrode 32 is then upturned and higher than the slot 311 of the bottom plate 310, in order to connect with the gold of the memory card 40. Finger 41 contact (shown in Figure 5 and Figure 7); a detection mechanism, including: a metal shell 50, a metal dome 51 and a detection terminal 52, wherein the metal shell 50 surrounds the connector body 30, and The welding point 501 extending through the edge of the metal shell 50 is welded to the circuit of the circuit board, which has the auxiliary function of fixing the metal shell 50. One end of the metal shrapnel 51 is connected to the metal shell 50, and its free end 510 is curved and At least a part extends to the moving path when the memory card 40 is inserted into the connector body 30, and the detection terminal 52 is inserted into a corner of the frame 31 of the connector body 30 and connected with the circuit of the circuit board. Under the state of the memory card 4, the metal dome 51 will not be in contact with the detection terminal 52, but the metal dome 51 can be directed by the memory card 40 to intersect with the insertion direction when the memory card 40 is correctly inserted into the connector body 30. Direction (that is, the direction across the moving path of the memory card 40) is pushed (as shown in Figure 6 and Figure 7), and the detection terminal 52 is arranged to be able to contact with the free end 510 of the metal dome 51 after the metal dome 51 is pushed At this time, the detection terminal 52 can connect the circuit of the circuit board through the metal dome 51 and the metal shell 50, so that the inserted memory card 40 can start to operate; The clamp arms 60a and 60b on the opposite sides of the memory card 40 are formed by bending the metal material of the metal shell 50 located on the opposite sides of the memory card 40. The generated elastic force can clamp the memory card 40 from the side to prevent the memory card 40 from loosening due to external vibration (as shown in FIGS. 8 and 9 ). The preferred bending direction of a pair of pliers arms 60a and 60b is toward the direction in which the memory card 40 is inserted into the connector body 30, which can increase the resistance of the memory card 40 when it moves in the opposite direction and is loosened. A contact surface with high friction force is added to the surface of the pliers arms 60a and 60b to touch the position of the memory card 40, for example, the pliers arms 60a and 60b are made wavy, serrated, rough or pasted with a A layer of high-friction material (such as rubber rubber, etc.) is used to increase the friction force, so as to prevent the memory card 40 from being loosened from the connector body 30 due to the vibration of the external force. Since the metal dome 51 is arranged on the other side opposite to the golden finger 41 of the memory card 40, when the memory cards are correctly inserted into the connector body 30 and arrive at the location, the dome-shaped metal electrode 32 on the surface of the bottom plate 310 will It will be in contact with the golden finger 41 of the memory card 40, and at the same time, a force will be generated to push the memory card 40 toward the metal dome 51, because this relationship will provide the power to contact the metal dome 51 with the detection terminal 52. Furthermore, the connection firmness between the memory card 40 and the connector body 30 is improved.

In another preferred embodiment of the present utility model, at the position where the surface of the free end 510 of the metal dome 51 is in contact with the detection terminal 52, a spherical or protruding contact point 511 can also be set, which can further strengthen the The contact reliability between the metal dome 51 and the detection terminal 52 .

Claims (8)

1, a kind of connector of memory card is characterized in that, includes:

A connector main body, has an Insulating frame and several are installed in the metal electrode of the base plate of this framework, one end of any metal electrode is connected with the circuit of circuit board, and the other end of any metal electrode then is upturned and has elasticity, in order to contact with the golden finger of memory card;

One detects mechanism, include: a metal-back, a metal clips and detect terminal, this metal-back surrounds connector body, and be electrically connected at the circuit of circuit board, one end of metal clips is connected with metal-back, detects terminal and is inserted in the framework of connector body and is connected with the circuit of circuit board.

2, the connector of memory card according to claim 1 is characterized in that the edge of metal-back is extended with a pad, in order to the circuit that is welded in circuit board and have the effect of fixing this metal-back.

3, the connector of memory card according to claim 1, it is characterized in that: the free end of metal clips is bending and has at least in a part of mobile route that extends when arriving memory card and being inserted into connector body, so as the memory card that is inserted into to promote so that with detect termination contact.

4, the connector of memory card according to claim 3 is characterized in that: the free end surface of metal clips and the position that detects termination contact are provided with a contact point.

5, the connector of memory card according to claim 1, it is characterized in that: include an escapement in the connector, escapement system is made of two tong arms that are positioned at the relative both sides of memory card, this is directly to utilize metal-back to form in the metal material bending of relative two side positions of memory card to tong arm, and the elastic force that utilizes metal material to be produced after deflection will insert the memory card of connector body and clamp.

6, the connector of memory card according to claim 5, it is characterized in that: this is the direction bending of inserting connector body towards memory card to tong arm, this surface to tong arm is the contact-making surface with high frictional force, and the contact-making surface of this high frictional force is a wavy surface.

7, the connector of memory card according to claim 6 is characterized in that: the contact-making surface of this high frictional force is a jagged surface, or is one group of road surface, or has the material of a floor height frictional force on the surface.

8, the connector of memory card according to claim 7 is characterized in that: the material of high frictional force is a rubber.

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