Multi-channel double-end floating connector

Abstract

The utility model discloses a multi-channel double-end floating connector, belongs to the field of connectors, solves the problem that an additional assembly tool is needed for fixing when a conventional contact is installed, and mainly adopts the technical scheme that the multi-channel double-end floating connector is provided for solving the problem. Comprising an insulating base body provided with a plurality of channels, an elastic conductor and an ejector pin connected to the end portion of the elastic conductor, the ejector pin compresses the elastic conductor and retracts into the channels after being stressed, the elastic conductor enables the ejector pin to be partially exposed out of the channels, step faces for limiting the ejector pin to be separated from the channels are arranged in the channels, and the ejector pin comprises a contact and an elastic portion. The elastic part has a radial compression state and a limiting state, when the elastic part is in the radial compression state, the outer diameter of the elastic part is smaller than the diameter of the channel, when the elastic part is in the limiting state, the elastic part abuts against the step face to limit the ejector pin to break away from the channel, and the elastic part has the deformation trend of keeping the limiting state. According to the utility model, the assembly of the ejector pin does not need an additional assembly tool.

Description

[Technical field]

[0001] The utility model shows a multi-channel double-end floating connector, belonging to the technical field of connectors. [Background technology]

[0002] Double-ended floating multi-channel connectors are mainly used for board-to-board connections. An elastic conductor is set in the middle of the connector to drive the exposed contacts to achieve axial compression and rebound. When the two ends of the connector are compressed, axial pressure can be provided in the channel to achieve solder-free connection between the connector and the printed circuit board. When the compression is released, the contacts at both ends of the connector are exposed again, so that the double-ended floating connector can be reused many times.

[0003] In order for the connector contacts to float, the outer circle of the contacts and the hole wall of the insulating substrate must naturally have a clearance fit. However, the connector itself needs to be a self-contained whole, and the contacts must be fixed in the connector insulating substrate to prevent them from falling out. Therefore, the channel hole of the connector needs to be set to a structure with small ends and a large middle. At the same time, the contacts are also designed in a step form, and the contact steps are blocked and fixed by the steps in the inner hole of the insulating substrate. However, in this way, the channel is small at both ends and large in the middle, making it difficult to assemble the contact parts.

[0004] Chinese utility model (CN212626200U) discloses a button connector, in which an expansion ring is embedded in the hole at one end of the insulating substrate, and the expansion ring fixes the lower contact pin. Although this solution solves the problem of installing and fixing the contacts to a certain extent, due to the thin thickness of the expansion ring, the axial length of the contact restraint is short, and the expansion ring itself has a certain amount of shaking in the slot. Therefore, the contact fixed by the expansion ring is prone to skew during the floating process, which in turn causes jamming. In severe cases, it may also affect the life of the elastic conductor inside the channel, and it is easy to generate coating metal powder during the friction between the contact and the inner edge of the clamping ring, which may bring certain safety hazards. [Utility Model Content]

[0005] The utility model aims to solve the problem that an additional assembly tool is required for fixing the existing contacts during installation, and for this purpose provides a multi-channel double-ended floating connector so that the assembly of ejector pins does not require an additional assembly tool.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A multi-channel double-ended floating connector comprises an insulating substrate provided with a plurality of channels, an elastic conductor which is axially retractable along the channels, and a pin connected to the end of the elastic conductor. The pin compresses the elastic conductor and retracts into the channel after being subjected to force, and the elastic conductor exposes the pin part in the channel. A step surface which limits the pin from leaving the channel is provided in the channel. The pin comprises a contact and an elastic portion. The elastic portion has a radial compression state and a limiting state. When the elastic portion is in the radial compression state, the outer diameter of the elastic portion is smaller than the diameter of the channel. When the elastic portion is in the limiting state, the elastic portion abuts against the step surface to limit the pin from leaving the channel. The elastic portion has a deformation tendency to maintain the limiting state.

[0008] The beneficial effects of adopting the utility model are:

[0009] The ejector pin described in the utility model comprises a contact and an elastic part, wherein the elastic part has a radial compression state and a limiting state. During the installation of the ejector pin, the elastic part is placed in a radial compression state, wherein the outer diameter of the elastic part is smaller than the diameter of the channel, so that the ejector pin can extend into the channel. After the elastic part passes over the step surface, the elastic part rebounds to the limiting state under the action of its own elasticity, wherein the elastic part abuts against the step surface, thereby limiting the ejector pin from leaving the channel and completing the installation of the ejector pin. The installation of the ejector pin described in the utility model does not require the use of additional assembly tooling, thereby making the assembly operation of the ejector pin more convenient, and also reducing materials and manufacturing costs. In addition, no additional fixing device is required during the installation of the ejector pin, thereby effectively reducing the installation space occupied by the ejector pin in the radial direction, which is conducive to arranging more channels, so that the channels are arranged more tightly.

[0010] Secondly, the insulating base described in the utility model is an integrated structure, which can reduce the difficulty of processing the insulating base and also enable the insulating base to have higher strength and reliability; in addition, after the ejector pin is installed, there is no extra installation gap in the insulating base as a whole, making it more integrated as a whole, which can effectively improve the aesthetics of the connector.

[0011] Preferably, a radially extending protrusion is provided on the outer peripheral side of the elastic part, and a limiting surface is formed on a side of the protrusion close to the contact. When the elastic part is in a limiting state, the limiting surface abuts against the step surface.

[0012] Preferably, the outer diameter of the protrusion gradually decreases from the limiting surface to the end away from the contact. With the above technical solution, the protrusion is cone-shaped as a whole, and a guide slope is formed on the outer peripheral side of the protrusion. During the installation of the ejector, the guide slope can guide the elastic part into the channel, making the installation of the ejector smoother and more labor-saving, and reducing the difficulty of installing the ejector.

[0013] Preferably, the channel comprises a first through hole for mounting an elastic conductor and two second through holes respectively located at both ends of the first through hole, the diameter of the first through hole is larger than the diameter of the second through hole, and the step surface is located at the connection between the first through hole and the second through hole.

[0014] Preferably, when the elastic portion is in a radial compression state, the outer diameter of the elastic portion is smaller than the diameter of the second through hole, and when the elastic portion is in a limited state, the outer diameter of the elastic portion is larger than the diameter of the second through hole.

[0015] Preferably, the axial length of the second through hole is L, L≥0.4mm. The above technical solution is adopted to make the second through hole have a sufficient length, thereby increasing the contact area between the second through hole and the ejector pin. The second through hole can position the outer peripheral side of the ejector pin, so that the ejector pin can move axially as much as possible during the extension and retraction process, reduce the possibility of the ejector pin being skewed, avoid the ejector pin from being stuck, and improve the reliability of the ejector pin.

[0016] Preferably, the second through holes are symmetrically distributed at two ends of the first through hole.

[0017] Preferably, a plurality of avoidance grooves are evenly distributed on the circumference of the elastic portion, and the avoidance grooves are used for radial compression of the elastic portion so that the elastic portion reaches a radially compressed state.

[0018] Preferably, the elastic portion is provided with a mounting hole at an end portion close to the elastic conductor for accommodating the elastic conductor.

[0019] Preferably, the contact and the elastic part are an integrated structure. The above technical solution makes the ejector pin have higher strength, reduces the possibility of the ejector pin breaking, and also reduces the difficulty of processing the ejector pin.

[0020] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings.

Brief Description of the Drawings

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Figure 1 It is a cross-sectional view of a multi-channel double-ended floating connector of the utility model;

[0023] Figure 2 It is a cross-sectional view of an insulating substrate in a multi-channel double-ended floating connector of the utility model;

[0024] Figure 3 The utility model is a schematic diagram of the structure of a ejector pin in a multi-channel double-ended floating connector.

[0025] Reference numerals: 1 insulating substrate, 11 channel, 111 first through hole, 112 second through hole, 12 step surface, 2 elastic conductor, 3 ejector pin, 31 contact, 32 elastic portion, 33 bump, 331 guiding inclined surface, 34 avoidance groove, 35 limiting surface. [Specific implementation method]

[0026] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 3As shown, this embodiment shows a multi-channel 11 double-end floating connector, including an insulating base 1 provided with a plurality of channels 11, an elastic conductor 2 axially extending and retracting along the channel 11, and a pin 3 connected to the end of the elastic conductor 2, wherein the pin 3 compresses the elastic conductor 2 and retracts into the channel 11 after being subjected to force, and the elastic conductor 2 makes the pin 3 partially exposed from the channel 11, and a step surface 12 for limiting the pin 3 from being separated from the channel 11 is provided in the channel 11, and the pin 3 includes a contact 31 and an elastic portion 32, and the elastic portion 32 has a radial compression state and a limiting state, when the elastic portion 32 is in the radial compression state, the outer diameter of the elastic portion 32 is smaller than the diameter of the channel 11, when the elastic portion 32 is in the limiting state, the elastic portion 32 abuts against the step surface 12 to limit the pin 3 from being separated from the channel 11, and the elastic portion 32 has a deformation tendency to maintain the limiting state.

[0031] like Figure 2 As shown, the insulating base 1 in this embodiment is evenly distributed with a plurality of channels 11, and the channels 11 all penetrate the insulating base 1, the channel 11 includes a first through hole 111 for installing the elastic conductor 2 and two second through holes 112 respectively located at both ends of the first through hole 111, wherein the two second through holes 112 are symmetrically distributed at both ends of the first through hole 111, the diameter of the first through hole 111 is larger than the diameter of the second through hole 112, the step surface 12 is located at the connection between the first through hole 111 and the second through hole 112, and the ejector 3 is installed by inserting the elastic part 32 from the second through hole 112 so that the elastic part 32 abuts against the elastic conductor 2, and at the same time, after the elastic part 32 enters the first through hole 111, the step surface 12 forms a limit on the elastic part 32, thereby limiting the ejector 3 from leaving the channel 11; it should be noted that the material of the insulating base 1 in this embodiment can be selected from commonly used insulating materials such as PPS, PEI, PEEK, PAI, etc., which can be selected according to the use environment and cost before production.

[0032] In order to prevent the ejector pin 3 from being skewed during the extension and retraction process, the axial length of the second through hole 112 in the present embodiment is L, L ≥ 0.4 mm, so that the second through hole 112 has a sufficient length, thereby increasing the contact area between the second through hole 112 and the ejector pin 3, and the second through hole 112 can form a positioning for the outer peripheral side of the ejector pin 3, so that the ejector pin 3 can move axially as much as possible during the extension and retraction process, thereby reducing the possibility of the ejector pin 3 being skewed, avoiding the ejector pin 3 from being stuck, and improving the reliability of the ejector pin 3; when L < 0.4 mm, the second through hole 112 has a shorter axial length. Due to the installation gap between the ejector pin 3 and the second through hole 112, the ejector pin 3 will shake to a certain extent during the movement, which may cause the ejector pin 3 to be skewed, thereby causing the ejector pin 3 to be stuck, seriously affecting the normal use of the connector.

[0033] like Figure 3As shown, the contact 31 and the elastic portion 32 in this embodiment are an integrated structure, which makes the ejector pin 3 have higher strength, reduces the possibility of breakage of the ejector pin 3, and also reduces the difficulty of processing the ejector pin 3; in addition, a radially extending protrusion 33 is provided on the outer peripheral side of the elastic portion 32, and a limiting surface 35 is formed on the side of the protrusion 33 close to the contact 31. When the elastic portion 32 is in a limited state, the limiting surface 35 is in contact with the step surface 12.

[0034] In order to reduce the difficulty of installing the ejector pin 3, the outer diameter of the protrusion 33 in the present embodiment gradually decreases from the limiting surface 35 to the end away from the contact 31, that is, the ejector pin 3 is tapered as a whole, and a guide inclined surface 331 is formed on the outer peripheral side of the ejector pin 3. During the installation of the ejector pin 3, the guide inclined surface 331 can guide the elastic portion 32 to enter the channel 11, so that the installation of the ejector pin 3 is smoother and more labor-saving, thereby reducing the difficulty of installing the ejector pin 3.

[0035] In this embodiment, the ejector pin 3 is made of elastic metal materials such as beryllium bronze, tin bronze, spring steel, etc. The ejector pin 3 itself has a certain elasticity. The ejector pin 3 is evenly distributed with a plurality of avoidance grooves 34 on the circumference of the elastic part 32. The avoidance grooves 34 are used to radially compress the elastic part 32 so that the elastic part 32 reaches a radially compressed state. Before installation, the operator applies a radial external force to the elastic part 32 so that the elastic part 32 is radially compressed as a whole, thereby reaching a radially compressed state. In the radially compressed state, the elastic part 32 The outer diameter of is smaller than the diameter of the second through hole 112, so that the elastic portion 32 can be inserted into the second through hole 112. When the elastic portion 32 extends into the first through hole 111, the elastic portion 32 rebounds under the action of its own elasticity, thereby restoring the outer diameter of the elastic portion 32. At this time, the elastic portion 32 is in a limited state. In the limited state, the outer diameter of the elastic portion 32 is larger than the diameter of the second through hole 112. At this time, the limiting surface 35 of the protrusion 33 abuts against the step surface 12, thereby limiting the ejector pin 3 from leaving the channel 11, and completing the installation of the ejector pin 3.

[0036] It should be noted that, in other embodiments, the elastic portion 32 may also be sleeved on the contact 31, and the outer surface of the contact 31 may be provided with a positioning groove for limiting the axial movement of the elastic portion 32. The elastic portion 32 may be a silicone block or a rubber block that can be radially compressed. When the ejector pin 3 is installed, the elastic portion 32 is radially compressed by an external force, so that the outer diameter of the elastic portion 32 is smaller than the diameter of the second through hole 112. When the elastic portion 32 enters the first through hole 111, the elastic portion 32 rebounds under the action of its own elasticity, thereby causing the elastic portion 32 to abut against the step surface 12.

[0037] In addition, in order to reduce the overall height of the connector, the elastic portion 32 in this embodiment is provided with a mounting hole for accommodating the elastic conductor 2 at the end close to the elastic conductor 2. Inserting part of the elastic conductor 2 into the mounting hole can reduce the length of the ejector pin 3 exposed in the channel 11, thereby reducing the overall height of the connector.

[0038] The assembly process of the connector in this embodiment is as follows:

[0039] The elastic portion 32 of the ejector pin 3 is directed toward the second through hole 112, and a radial external force is applied to the elastic portion 32 manually or with a suitable tool to radially compress the elastic portion 32 to reach a radially compressed state. At this time, the outer diameter of the elastic portion 32 is smaller than the diameter of the second through hole 112, so that the elastic portion 32 can be inserted into the second through hole 112; when the elastic portion 32 enters the first through hole 111, the elastic portion 32 automatically pops open under its own elastic action, so that the elastic portion 32 reaches a limited state, and its outer diameter is restored to the size before contraction. At this time, the outer diameter of the elastic portion 32 is larger than the diameter of the second through hole 112, and a barrier is formed between the step surface 12 and the limiting surface 35, thereby limiting the ejector pin 3 from leaving the channel 11, and completing the installation of the ejector pin 3.

[0040] After the connector is assembled, the elastic conductor 2 of the connector applies an outward force to the ejector pin 3 in a natural state, so that the limiting surface 35 of the ejector pin 3 abuts against the step surface 12, thereby fixing the ejector pin 3. During use, when the ejector pin 3 is compressed, the ejector pin 3 moves along the channel 11 toward the elastic conductor 2 and compresses the elastic conductor 2. At the same time, the elastic conductor 2 applies an outward reaction force to the ejector pin 3, so that the ejector pin 3 elastically contacts the pressure point to form a solder-free connection; after the compressed contact, under the elastic force of the elastic conductor 2, the ejector pin 3 slides toward the outside of the channel 11, so that the contact 31 of the ejector pin 3 is exposed in the second channel 11.

[0041] The ejector pin 3 described in this embodiment includes a contact 31 and an elastic portion 32, and the elastic portion 32 has a radial compression state and a limiting state. During the installation process of the ejector pin 3, the elastic portion 32 is placed in a radial compression state. At this time, the outer diameter of the elastic portion 32 is smaller than the diameter of the channel 11, so that the ejector pin 3 can extend into the channel 11. After the elastic portion 32 passes over the step surface 12, the elastic portion 32 rebounds to the limiting state under the action of its own elasticity. At this time, the elastic portion 32 abuts against the step surface 12, thereby limiting the ejector pin 3 from leaving the channel 11 and completing the installation of the ejector pin 3. The installation of the ejector pin 3 described in this embodiment does not require the use of additional assembly tooling, making the assembly operation of the ejector pin 3 more convenient, and also reducing materials and manufacturing costs. In addition, there is no additional fixing device during the installation process of the ejector pin 3, which can effectively reduce the installation space occupied by the ejector pin 3 in the radial direction, which is conducive to arranging more channels 11, so that the arrangement of the channels 11 is more compact.

[0042] Secondly, the insulating base 1 described in this embodiment is an integrated structure, which can reduce the difficulty of processing the insulating base 1, and also enable the insulating base 1 to have higher strength and reliability; in addition, after the ejector pin 3 is installed, there is no extra installation gap in the insulating base 1 as a whole, making it more integrated as a whole, which can effectively improve the aesthetics of the connector.

[0043] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A multi-channel double-ended floating connector, comprising an insulating substrate with a plurality of channels, an elastic conductor extending and retracting along the axial direction of the channel, and a pin connected to the end of the elastic conductor, wherein the pin compresses the elastic conductor and retracts into the channel after being subjected to force, and the elastic conductor makes the pin partly exposed in the channel, characterized in that: A step surface for limiting the ejector pin from escaping from the channel is provided in the channel. The ejector pin includes a contact and an elastic portion. The elastic portion has a radial compression state and a limiting state. When the elastic portion is in the radial compression state, the outer diameter of the elastic portion is smaller than the diameter of the channel. When the elastic portion is in the limiting state, the elastic portion abuts against the step surface to limit the ejector pin from escaping from the channel. The elastic portion has a deformation tendency to maintain the limiting state.

2. A multi-channel double-ended floating connector according to claim 1, characterized in that: A radially extending protrusion is provided on the outer peripheral side of the elastic part, and a limiting surface is formed on a side of the protrusion close to the contact. When the elastic part is in a limiting state, the limiting surface abuts against the step surface.

3. A multi-channel double-ended floating connector according to claim 2, characterized in that: The outer diameter of the protrusion gradually decreases from the limiting surface to the end away from the contact.

4. A multi-channel double-ended floating connector according to claim 1, characterized in that: The channel includes a first through hole for installing an elastic conductor and two second through holes respectively located at two ends of the first through hole, the diameter of the first through hole is larger than the diameter of the second through hole, and the step surface is located at the connection between the first through hole and the second through hole.

5. A multi-channel double-ended floating connector according to claim 4, characterized in that: When the elastic part is in a radial compression state, the outer diameter of the elastic part is smaller than the diameter of the second channel; when the elastic part is in a limited state, the outer diameter of the elastic part is larger than the diameter of the second channel.

6. A multi-channel double-ended floating connector according to claim 4, characterized in that: The axial length of the second through hole is L, and L≥0.4 mm.

7. A multi-channel double-ended floating connector according to claim 4, characterized in that: The second through holes are symmetrically distributed at two ends of the first through hole.

8. The multi-channel double-ended floating connector according to claim 1, characterized in that: A plurality of avoidance grooves are evenly distributed on the circumference of the elastic part, and the avoidance grooves are used for radial compression of the elastic part so that the elastic part reaches a radial compression state.

9. The multi-channel double-ended floating connector according to claim 1, characterized in that: The elastic part is provided with a mounting hole for accommodating the elastic conductor at the end portion close to the elastic conductor.

10. The multi-channel double-ended floating connector according to claim 1, characterized in that: The contact and the elastic part are an integrated structure.

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