Connecting device and bus system

Abstract

The utility model relates to the technical field of communication buses, and discloses a connecting device and a bus system, and the connecting device comprises a housing, a resistor, a male end and a female end. The shell is provided with a sliding rail and a sliding block, the sliding rail extends in the first direction, and the sliding block is in sliding connection with the sliding rail; the resistor is arranged in the shell and extends in the first direction, and the sliding block is conductively connected with the resistor; the resistor comprises a dynamic output end and a static output end, the dynamic output end is arranged on the sliding block, and the static output end is arranged at one end of the resistor; the male end is arranged on the shell and is electrically connected with the dynamic output end; according to the utility model, the male end of the connecting device is electrically connected with the dynamic output end of the resistor, the female end is electrically connected with the static output end of the resistor, and the resistance value between the dynamic output end and the static output end is changed by moving the sliding block, so that the resistance value of the connecting device is adjusted; and the resistance value can be adjusted at any time along with the change of communication network conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of communication buses, in particular to a connecting device and a bus system. Background Art

[0002] When optimizing controller debugging, testing, and production processes, precisely matching resistor values is crucial for various controller applications in different bus configurations, especially considering changes in communication rates and extended communication distances. This step aims to precisely control the signal transmission environment, significantly reducing or even eliminating signal reflections, thereby significantly improving signal transmission purity and the overall reliability of the communication system.

[0003] Taking the CAN (Controller Area Network) bus system as an example, by intelligently selecting and installing resistors that precisely match the characteristic impedance of the cable, it is not only possible to effectively absorb the reflected wave energy at the end of the transmission line and prevent the occurrence of ringing effects at the source, but also to significantly optimize the signal waveform, ensuring the integrity and accuracy of data transmission, and providing guarantees for the performance of the entire communication system.

[0004] In related technologies, resistors of different resistance values need to be replaced according to changes in communication network conditions such as communication rate adjustment or communication distance changes. This not only requires frequent plugging and unplugging of connectors, which increases the complexity and time cost of maintenance, but also requires pre-preparation and storage of multiple resistors of different resistance values, which increases the company's inventory burden, increases operating costs, and also reduces overall work efficiency. Utility Model Content

[0005] In view of this, the utility model provides a connection device and a bus system to solve the problem of low overall work efficiency when replacing resistors of different resistance values according to changes in communication network conditions.

[0006] In the first aspect, the utility model provides a connecting device, including a shell, a resistor, a male end and a female end; the shell is provided with a slide rail and a slider, the slide rail extends along a first direction, and the slider is slidably connected to the slide rail; the resistor is arranged in the shell and extends along the first direction, and the slider is conductively connected to the resistor; the resistor includes a dynamic output end and a static output end, the dynamic output end is arranged on the slider, and the static output end is arranged at one end of the resistor; the male end is arranged on the shell and electrically connected to the dynamic output end; the female end is arranged on the shell and electrically connected to the static output end.

[0007] Beneficial effects: By electrically connecting the male end of the connecting device to the dynamic output end of the resistor and the female end to the static output end of the resistor, the resistance value between the dynamic output end and the static output end can be changed by moving the slider, thereby realizing the adjustment of the resistance value of the connecting device; it has high flexibility and scalability, can adapt to changes in communication network conditions, and can adjust the resistance value at any time as the communication network conditions change; it significantly reduces operating costs and improves work efficiency.

[0008] In an optional embodiment, the slide rail is provided with one or more slide rails, and the multiple slide rails are arranged in sequence and spaced apart along the second direction; the slider is slidably connected to the multiple slide rails; and the second direction is perpendicular to the first direction.

[0009] Beneficial effect: Through the setting of multiple slide rails, the stability of the slider during the sliding process is achieved, the position of the slider is prevented from shifting during the sliding process, and the accuracy and consistency of the slider's motion trajectory are ensured, thereby greatly improving the operating accuracy and reliability of the overall structure.

[0010] In an optional embodiment, a sliding hole is provided on the slide rail, and the sliding hole extends along the first direction; the slider includes an operating part and a connecting part; the operating part is located on the outside of the shell; one end of the connecting part is fixedly connected to the operating part, and the other end passes through the sliding hole and is electrically connected to the resistor.

[0011] Beneficial effects: Through the setting of the connecting part, an electrical connection between the slider and the resistor is achieved; through the setting of the operating part, the slider can slide smoothly and unobstructed on the slide rail only by applying force to push the operating part, which is convenient for the operator to push the slider and improves the operating efficiency.

[0012] In an optional embodiment, the connecting portion is slidably engaged with the slide rail.

[0013] Beneficial effect: Since the connecting portion is slidably engaged with the slide rail, that is, the size of the slider is designed to have a certain interference fit relative to the corresponding part of the slide rail during assembly, an interference fit between the slider and the slide rail is achieved, which can maintain the smoothness of sliding during use and effectively prevent the slider from unexpectedly loosening or falling off on the slide rail, avoiding the slider from sliding abnormally without human power, and ensuring the stability of the resistance value of the resistor during use.

[0014] In an optional embodiment, in a second direction, the width of the operating portion is greater than the width of the slide rail; and the second direction is perpendicular to the first direction.

[0015] Beneficial effect: Since the width of the operating portion is greater than the width of the slide rail, the slider can be prevented from falling off the slide rail, thereby enhancing the safety and stability of use.

[0016] In an optional embodiment, a scale is further included, and the scale is arranged on the outside of the shell and is adjacent to and parallel to the slide rail.

[0017] Beneficial effects: Through the setting of the scale, the current resistance value can be displayed in real time and intuitively. The operator only needs to make simple observations to quickly obtain accurate resistance information without the need for additional tools or equipment. This makes the resistance adjustment and monitoring more convenient and efficient, greatly simplifying the use process of the resistor and improving work efficiency.

[0018] In an optional embodiment, the length of the slide rail is less than or equal to the length of the scale.

[0019] Beneficial effect: By controlling the length of the slide rail and the scale, the length of the slide rail is ensured to be completely adapted to or slightly shorter than the length of the scale. No matter where the slider slides on the slide rail, the resistance value corresponding to the current position of the slider can always be found on the scale, ensuring the accuracy and stability of the resistance reading.

[0020] In an optional embodiment, an indicator line is provided on a side of the slider facing away from the housing, and the indicator line is suitable for pointing to a scale line of the scale.

[0021] Beneficial effect: By setting an indicator line on the slider, it is convenient for the operator to accurately match the current position of the slider with the scale line on the scale, which simplifies the process of reading the resistance value. The operator only needs to simply align the indicator line with the scale line to quickly and accurately obtain the current resistance value, ensuring the accuracy of the data.

[0022] In an optional embodiment, the male end is electrically connected to the movable output end through a spring terminal.

[0023] Beneficial effect: Since the spring terminal has elastic force, it ensures that when the slider moves to any position within its travel range, a stable electrical connection state can be achieved between the male end and the movable output end, thereby ensuring the reliability of the electrical connection.

[0024] In a second aspect, the present invention further provides a bus system, comprising the above-mentioned connecting device and a bus, one end of which is connected to the male end of the connecting device, and the other end of which is connected to the female end of the connecting device.

[0025] Beneficial effects: By connecting one end of the bus to the male end of the connecting device and the other end to the female end of the connecting device, signal reflections at both ends of the bus can be eliminated, improving signal quality and stability; and the bus forms an electrically closed loop, which helps control the propagation speed of the signal and prevent signal reflection and interference; reducing electromagnetic interference on the bus: it can reduce electromagnetic interference on the bus and improve the anti-interference performance of the bus. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a structural diagram of a connection device and a bus according to an embodiment of the present utility model;

[0028] Figure 2 Schematic diagram of the principle of the resistor in the embodiment of the present utility model.

[0029] Description of reference numerals:

[0030] 1. Housing; 2. Slide rail; 3. Resistor; 4. Slider; 41. Indicator line; 5. Scale; 6. Female terminal; 61. Pins 1 and 7; 62. Pins 1 and 2; 7. Male terminal; 71. Pins 2 and 7; 72. Pins 2 and 2. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0032] The following combination Figures 1 to 2 , describing the embodiments of the present utility model.

[0033] According to an embodiment of the present utility model, on the one hand, a connecting device is provided, including a shell 1, a resistor 3, a male end and a female end; the shell 1 is provided with a slide rail 2 and a slider 4, the slide rail 2 extends along a first direction, and the slider 4 is slidably connected to the slide rail 2; the resistor 3 is arranged in the shell 1 and extends along the first direction, and the slider 4 is conductively connected to the resistor 3; the resistor 3 includes a dynamic output end and a static output end, the dynamic output end is arranged on the slider 4, and the static output end is arranged at one end of the resistor 3; the male end is arranged on the shell 1 and electrically connected to the dynamic output end; the female end is arranged on the shell 1 and electrically connected to the static output end.

[0034] refer to Figure 2In one possible embodiment, the dynamic output terminal is terminal B of resistor 3, and the static output terminal is terminal A or terminal C of resistor 3. In other possible embodiments, terminals B and C of resistor 3 can be connected to serve as the dynamic output terminal, and terminal A of resistor 3 can be used as the static output terminal; alternatively, terminals B and A of resistor 3 can be connected to serve as the dynamic output terminal, and terminal C of resistor 3 can be used as the static output terminal. By adjusting the position of terminal B, the resistance between the dynamic and static output terminals can be adjusted, thereby adjusting the resistance of the connection device.

[0035] By electrically connecting the male end of the connecting device to the moving output end of the resistor 3 and the female end to the static output end of the resistor 3, the resistance value between the moving output end and the static output end can be changed by moving the slider 4, thereby realizing the adjustment of the resistance value of the connecting device; it has high flexibility and scalability, can adapt to changes in communication network conditions, and can adjust the resistance value at any time as the communication network conditions change; it significantly reduces operating costs and improves work efficiency.

[0036] In one embodiment, the male end is electrically connected to the movable output end through a spring terminal.

[0037] Since the spring terminal has elastic force, it ensures that when the slider 4 moves to any position within its travel range, a stable electrical connection state can be achieved between the male end and the movable output end, thereby ensuring the reliability of the electrical connection.

[0038] In one embodiment, the male end is a male plug and the female end is a female interface.

[0039] In one embodiment, the slide rail 2 is provided with one or more slide rails, and the multiple slide rails 2 are arranged in sequence and spaced apart along the second direction; the slider 4 is slidably connected to the multiple slide rails 2; and the second direction is perpendicular to the first direction.

[0040] For example, there can be two slide rails 2, with slider 4 slidably connected to the two slide rails 2 at both ends along the second direction. Housing 1 is provided with an elongated hole between the two slide rails 2, through which the middle portion of slider 4 is electrically connected to resistor 3. The provision of multiple slide rails 2 ensures the stability of slider 4 during sliding, preventing positional shifting of slider 4 during sliding, ensuring the accuracy and consistency of slider 4's motion trajectory, and thus significantly improving the operational accuracy and reliability of the overall structure.

[0041] In one embodiment, a sliding hole is provided on the slide rail 2, and the sliding hole extends along the first direction; the slider 4 includes an operating part and a connecting part; the operating part is located on the outside of the shell 1; one end of the connecting part is fixedly connected to the operating part, and the other end passes through the sliding hole and is electrically connected to the resistor 3.

[0042] Through the setting of the connecting part, the electrical connection between the slider 4 and the resistor 3 is achieved; through the setting of the operating part, the slider 4 can slide smoothly and unimpeded on the slide rail 2 by simply applying force to push the operating part, which makes it easier for the operator to push the slider 4 and improves the operating efficiency.

[0043] In one embodiment, the connecting portion is slidably engaged with the slide rail 2 .

[0044] Since the connecting portion is slidably engaged with the slide rail 2, that is, the size of the slider 4 is designed to have a certain interference fit relative to the corresponding part of the slide rail 2 during assembly, an interference fit between the slider 4 and the slide rail 2 is achieved, thereby achieving the purpose of maintaining smooth sliding during use and effectively preventing the slider 4 from unexpectedly loosening or falling off on the slide rail 2, avoiding abnormal sliding of the slider 4 due to non-human factors, and ensuring the stability of the resistance value of the resistor 3 during use.

[0045] In one implementation of this embodiment, there is one slide rail 2, and a slide hole is provided on the slide rail 2, and the operating part is located on the outside of the shell 1; one end of the connecting part is fixedly connected to the operating part, and the other end passes through the slide hole and is electrically connected to the resistor 3.

[0046] In another embodiment of the present invention, two slide rails 2 are provided, one of which has a sliding hole. The slider 4 is further provided with a snap-fit portion, which is spaced apart from the connecting portion along the second direction. The operating portion is located outside the housing 1. One end of the connecting portion is fixedly connected to the operating portion, and the other end passes through the sliding hole and is electrically connected to the resistor 3. The snap-fit portion is slidably connected to the other slide rail 2. During the sliding process, the slider 4 moves on the slide rail 2 with the sliding hole via the connecting portion, and simultaneously moves on the other slide rail 2 via the snap-fit portion, with the two sliding in coordination with each other.

[0047] In another embodiment of the present invention, three slide rails 2 are provided, with a slide hole provided on the middle slide rail 2. The slider 4 is further provided with two clipping portions, one located on either side of the connecting portion along the second direction. The operating portion is located outside the housing 1. One end of the connecting portion is fixedly connected to the operating portion, and the other end passes through the slide hole to be electrically connected to the resistor 3. The two clipping portions are respectively slidably connected to the other two slide rails 2. During the sliding process, the slider 4 moves on the middle slide rail 2 via the connecting portion and simultaneously moves on the slide rails 2 at both ends via the clipping portions at both ends. The three sliding portions cooperate with each other to further ensure the sliding stability of the slider 4.

[0048] In a specific embodiment, the connecting portion can achieve interference fit with the slide rail 2 by means of press-fitting or clamping.

[0049] In a specific embodiment, the clamping portion can achieve interference fit with the slide rail 2 by means of press-fitting or clamping.

[0050] In one embodiment, in a second direction, the width of the operating portion is greater than the width of the slide rail 2 ; the second direction is perpendicular to the first direction.

[0051] Since the width of the operating part is greater than the width of the slide rail 2, it can not only prevent the slider 4 from falling from the slide rail 2 to the side inside the shell 1, prevent excessive contact between the slider 4 and the resistor 3, enhance the stability of the electrical connection between the slider 4 and the resistor 3, and enhance the safety and stability of the use of the connecting device; but also facilitate the operator to apply thrust to the operating part.

[0052] In one embodiment, a scale 5 is further included. The scale 5 is arranged on the outside of the housing 1 and is adjacent to and parallel to the slide rail 2 .

[0053] By setting scale 5, a real-time and intuitive display of the current resistance value is achieved. The operator only needs to make simple observations to quickly obtain accurate resistance information without the need for additional tools or equipment. This makes the resistance adjustment and monitoring of resistor 3 more convenient and efficient, greatly simplifying the use process of resistor 3 and improving work efficiency.

[0054] In one implementation of this embodiment, the scale 5 may be scale lines directly engraved on the surface of the housing 1 .

[0055] In another embodiment of this invention, a ruler is provided on the housing 1. The length of the ruler is aligned with the length of the slide rail 2, and the ruler is provided with scale lines 5. Furthermore, one side of the ruler is engraved with a resistance scale, and the other side can be engraved with a length scale. The ruler is detachably connected to the housing 1, and can be removed from the housing 1 and used as a standalone length ruler in other scenarios.

[0056] In one embodiment, the length of the slide rail 2 is less than or equal to the length of the scale 5 .

[0057] By controlling the length of the slide rail 2 and the scale 5, it is ensured that the length of the slide rail 2 is completely adapted to or slightly shorter than the length of the scale 5. No matter where the slider 4 slides on the slide rail 2, the resistance value corresponding to the current position of the slider 4 can always be found on the scale 5, ensuring the accuracy and stability of the resistance reading.

[0058] In one implementation of this embodiment, the length of the slide rail 2 is less than the length of the scale 5. In another implementation of this embodiment, the length of the slide rail 2 is equal to the length marked by the scale 5.

[0059] In one embodiment, an indicator line 41 is provided on a side of the slider 4 facing away from the housing 1 , and the indicator line 41 is suitable for pointing to a scale line of the scale 5 .

[0060] By setting an indicator line 41 on the slider 4, it is convenient for the operator to accurately match the current position of the slider 4 with the scale line on the scale 5, which simplifies the process of reading the resistance value. The operator only needs to simply align the indicator line 41 with the scale line to quickly and accurately obtain the current resistance value, ensuring the accuracy of the data.

[0061] Preferably, an indicator arrow may be provided on a side of the operating portion close to the scale 5 , and the indicator arrow points to a scale line on the scale 5 .

[0062] According to an embodiment of the present invention, on the other hand, a bus system is provided, comprising the above-mentioned connecting device and a bus, wherein one end of the bus is connected to the male end of the connecting device, and the other end of the bus is connected to the female end of the connecting device.

[0063] By connecting one end of the bus to the male end of the connecting device and the other end to the female end of the connecting device, signal reflections at both ends of the bus can be eliminated, improving signal quality and stability; and the bus forms an electrically closed loop, which helps control the propagation speed of the signal and prevent signal reflection and interference; reducing electromagnetic interference on the bus: it can reduce electromagnetic interference on the bus and improve the anti-interference performance of the bus.

[0064] In one embodiment, the male end is a male plug-in and the female end is a female interface; the male plug-in is arranged on one side of the shell 1 and is plugged into and connected to the female terminal 6 of the interface at one end of the bus; the female interface is arranged opposite to the male plug-in and is plugged into and connected to the male terminal 7 of the interface at the other end of the bus.

[0065] Through the setting of the male plug-in and female end interfaces, an efficient and stable connection is achieved between the connection device and the bus. Moreover, since the male plug-in and the female end interfaces are set relative to each other, it is ensured that they do not interfere with each other during the connection process, thereby further improving the stability and reliability of the system. It not only simplifies the complexity of the connection operation, but also greatly reduces the performance loss or failure risk caused by improper connection.

[0066] In a specific embodiment, Figure 1The figure shows an example of a DB9_CAN bus interface. The DB9 interface is a common nine-pin D-Sub connector, consisting of a female terminal 6 and a male terminal 7. In CAN bus communication, the DB9 interface is often used as a connection interface between devices. Both the female terminal 6 and the male terminal 7 include nine pins, which are connected in a one-to-one correspondence. Female terminal 6 includes the first and second pins 61 and 62, respectively. Male terminal 7 includes the second and second pins 71 and 72. Pin 7 is designated CAN_H and is used to connect to the high-level signal line on the CAN bus; pin 2 is designated CAN_L and is used to connect to the low-level signal line on the CAN bus.

[0067] When the connecting device is connected to the bus, the male end of the connecting device is connected between the first and second pins 62 of the female terminal 6 and the second and second pins 72 of the male terminal 7, and the female end of the connecting device is connected between the first and seventh pins 61 of the female terminal 6 and the second and seventh pins 71 of the male terminal 7. The resistance of the connecting device is adjusted by adjusting the slider 4 of the connecting device to achieve the resistance adjustment between the high-level signal line and the low-level signal line.

[0068] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A connecting device, characterized in that: include: A housing (1) is provided with a slide rail (2) and a slider (4), wherein the slide rail (2) extends along a first direction, and the slider (4) is slidably connected to the slide rail (2); A resistor (3) is disposed in the housing (1) and extends along the first direction, and the slider (4) is conductively connected to the resistor (3); The resistor (3) includes a dynamic output end and a static output end, the dynamic output end is arranged on the slider (4), and the static output end is arranged at one end of the resistor (3); A male end, provided on the housing (1) and electrically connected to the movable output end; The female end is arranged on the housing (1) and is electrically connected to the static output end.

2. The connecting device according to claim 1, characterized in that The slide rail (2) is provided with one or more slide rails, and the plurality of slide rails (2) are sequentially spaced apart along the second direction; the slider (4) is slidably connected to the plurality of slide rails (2); the second direction is perpendicular to the first direction.

3. The connecting device according to claim 1, characterized in that The slide rail (2) is provided with a slide hole, and the slide hole extends along the first direction; the slider (4) comprises: An operating portion, located outside the housing (1); A connecting portion has one end fixedly connected to the operating portion and the other end passing through the sliding hole and electrically connected to the resistor (3).

4. The connection device according to claim 3, characterized in that The connecting portion is slidably engaged with the slide rail (2).

5. The connection device according to claim 3, characterized in that In the second direction, the width of the operating portion is greater than the width of the slide rail (2); the second direction is perpendicular to the first direction.

6. The connecting device according to any one of claims 1 to 5, characterized in that It also includes a scale (5), which is arranged on the outside of the housing (1) and is adjacent to and parallel to the slide rail (2).

7. The connection device according to claim 6, characterized in that In the first direction, the length of the slide rail (2) is less than or equal to the length of the scale (5).

8. The connecting device according to claim 6, characterized in that A side of the slider (4) facing away from the housing (1) is provided with an indicator line (41), and the indicator line (41) is suitable for pointing to a scale line of the scale (5).

9. The connecting device according to any one of claims 1 to 5 or 7 or 8, characterized in that The male end is electrically connected to the movable output end through a spring terminal.

10. A bus system, characterized in that: include: The connecting device according to any one of claims 1 to 9; A bus, one end of which is connected to the male end of the connection device, and the other end of which is connected to the female end of the connection device.

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