Backlight-adjustable CAN bus instrument

Abstract

The utility model relates to the field of CAN bus instruments, and discloses a CAN bus instrument capable of adjusting backlight. The instrument comprises an instrument body and a circuit board, the circuit board is installed in the instrument body, the instrument body is provided with a wire outlet hole, a threaded cylinder is arranged at the wire outlet hole, one end, away from the instrument body, of the threaded cylinder is provided with a conical rubber sleeve, the threaded cylinder is sleeved with and in threaded connection with a conical tail sleeve, and the conical rubber sleeve is located in the conical tail sleeve. A cable connected with the circuit board penetrates through the conical rubber sleeve and the conical tail sleeve, when the conical tail sleeve moves in the direction close to the instrument body, the conical rubber sleeve is driven to deform so as to clamp and fix the cable, and a one-way rotation locking piece is arranged on the outer side of the threaded cylinder. The one-way rotation locking piece is suitable for locking the direction in which the conical tail sleeve loosens rotation. According to the utility model, the position of the cable penetrating out of the instrument body is fixed, the stability of connection between the cable and the circuit board is improved, and the sensitivity of signal transmission is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of CAN bus instruments, in particular to a CAN bus instrument with adjustable backlight. Background Art

[0002] A CAN bus instrument is an automotive instrument that uses CAN bus technology for data transmission and display. It can exchange data with multiple systems on the car. When a system detects a fault, it will pass the fault information to the instrument through the CAN bus. The instrument will light up the fault light based on this information and display relevant information to the driver.

[0003] The CAN bus instrument includes an instrument housing, a tail cover and a circuit board. The circuit board is installed inside the instrument housing, and the tail cover is installed at the opening at the rear of the instrument housing to cover it. Among them, the lines in each system will be connected to the circuit board through a wiring plug, and the tail cover is provided with a threading hole for multiple lines to pass through. In order to ensure that the plugs on the lines of each system can be stably connected to the circuit board, the existing lines will be tied to other parts around the instrument through cable ties after passing through the tail cover. However, the cable tie closest to the tail cover is generally still separated from the tail cover by a certain distance, so that the line between the cable tie and the tail cover has a certain degree of freedom, causing the line connector to shake slightly due to the long-term vibration of the car, thereby affecting the stability of the connection between the corresponding system line and the circuit board and the sensitivity of the response. Utility Model Content

[0004] To solve at least one aspect of the above problems, the utility model provides a CAN bus instrument with adjustable backlight, comprising an instrument body and a circuit board, the circuit board being installed inside the instrument body, the instrument body being provided with a wire outlet hole, the wire outlet hole being provided with a threaded barrel, the wire outlet hole being located inside the threaded barrel, a conical rubber sleeve being provided at one end of the threaded barrel away from the instrument body, a conical tail sleeve being sleeved on the threaded barrel and threadedly connected with the conical tail sleeve, the conical rubber sleeve being located inside the conical tail sleeve, a cable connected to the circuit board passing through the conical rubber sleeve and the conical tail sleeve, when the conical tail sleeve moves in a direction close to the instrument body, the conical rubber sleeve will be driven to deform to clamp and fix the cable, a one-way rotation locking piece is provided on the outer side of the threaded barrel, the one-way rotation locking piece is suitable for locking the direction in which the conical tail sleeve is loosened and rotated.

[0005] Optionally, a plurality of deformation grooves are provided at circumferential intervals inside the conical rubber sleeve.

[0006] Optionally, a slot is formed at one end of the threaded barrel away from the instrument body, and the conical rubber sleeve is inserted into the slot with interference fit.

[0007] Optionally, a plurality of display marks are provided at the front end of the instrument body, and a light-emitting element is provided at each of the plurality of display marks so that the corresponding display marks are illuminated, and the brightness of the plurality of light-emitting elements can be adjusted.

[0008] Optionally, a ratchet ring is fixedly provided on the outer wall of the tapered tail sleeve, and one side of the one-way rotation locking member is inserted into any tooth groove of the ratchet ring to lock the loose rotation of the tapered tail sleeve.

[0009] Optionally, when the one-way rotation locking piece cooperates with the ratchet ring, the tapered tail sleeve and the threaded barrel maintain a threaded connection state.

[0010] Optionally, the one-way rotation locking element is an arc-shaped ratchet spring.

[0011] Optionally, a mounting strip is provided on the outer side of the threaded barrel, a mounting groove is provided on a side of the mounting strip close to the threaded barrel, and one side of the one-way rotation locking piece is inserted into and fixed to the mounting groove.

[0012] Optionally, a limiting plate is provided on one side of the one-way rotation locking member, and the limiting plate is fixed to the instrument body and is suitable for limiting the reverse movement of the one-way rotation locking member.

[0013] Optionally, the extending length of the limiting plate is smaller than the extending length of the one-way rotation locking member.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] 1. After the cable is connected to the circuit board, it will pass through the threaded barrel and the tapered tail sleeve. Then, the tapered tail sleeve is rotated to move toward the instrument body. The tapered tail sleeve will drive the tapered rubber sleeve to close and cooperate with the tapered tail sleeve to clamp and fix the cable, so that the position of the cable after passing through the instrument body is fixed. At the same time, the one-way rotation locking piece prevents the tapered tail sleeve from rotating in the opposite direction to cause looseness, thereby reducing the degree of freedom of the connection end between the cable and the circuit board, improving the stability of the connection between the cable and the circuit board, and ensuring the sensitivity of signal transmission;

[0016] 2. The arrangement of multiple deformation grooves can provide deformation space for the conical rubber sleeve when it is squeezed and deformed, thereby improving the convenience of deformation of the conical rubber sleeve;

[0017] 3. The ratchet ring cooperates with the one-way rotation locking piece to obtain the limit of reverse rotation. In addition, the ratchet ring can act as a friction texture, which can increase the friction force when the operator rotates the tapered tail sleeve and is not prone to slipping;

[0018] 4. The conical rubber sleeve is plug-connected with the threaded barrel. The corresponding conical rubber sleeve can be replaced for cables of different quantities and total outer diameters to ensure the stability of cable clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The explosion of the instrument body and the circuit board in the embodiment of the utility model Figure 1 ;

[0020] Figure 2 It is a structural diagram of the threaded barrel, the tapered tail sleeve and the one-way rotation locking member in the embodiment of the utility model;

[0021] Figure 3 The explosion of the instrument body and the circuit board in the embodiment of the utility model Figure 2 ;

[0022] Figure 4 It is an exploded view of the threaded barrel, the tapered tail sleeve and the one-way rotation locking member in the embodiment of the utility model.

[0023] Explanation of the reference numerals: 1. Instrument body; 11. Wire outlet hole; 12. Threaded barrel; 121. Slot; 13. Conical rubber sleeve; 131. Deformation groove; 14. Conical tail sleeve; 141. Ratchet ring; 15. One-way rotation locking piece; 16. Front shell; 17. Tail cover; 18. Mounting strip; 19. Limiting plate; 2. Circuit board. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-4 This application is described in further detail.

[0025] The utility model embodiment provides a CAN bus instrument with adjustable backlight, referring to Figure 1 and Figure 2 The CAN bus instrument with adjustable backlight includes an instrument body 1 and a circuit board 2. The circuit board 2 is installed inside the instrument body 1. The instrument body 1 is provided with a wire outlet hole 11. A threaded barrel 12 is provided at the wire outlet hole 11. The wire outlet hole 11 is located inside the threaded barrel 12. A conical rubber sleeve 13 is provided at one end of the threaded barrel 12 away from the instrument body 1. A conical tail sleeve 14 is sleeved on the threaded barrel 12 and threadedly connected. The conical rubber sleeve 13 is located in the conical tail sleeve 14. The cable connected to the circuit board 2 passes through the conical rubber sleeve 13 and the conical tail sleeve 14. When the conical tail sleeve 14 moves in a direction close to the instrument body 1, the conical rubber sleeve 13 will be driven to deform to clamp and fix the cable. A one-way rotation locking piece 15 is provided on the outer side of the threaded barrel 12. The one-way rotation locking piece 15 is suitable for locking the direction in which the conical tail sleeve 14 is loosened and rotated.

[0026] The instrument body 1 includes a front shell 16 and a rear cover 17. The front end of the front shell 16 is provided with a plurality of display marks (not shown in the figure), each of which corresponds to a corresponding system of the car. Each display mark is provided with a light-emitting element, and the corresponding display mark is illuminated by the light-emitting element to remind the driver that the corresponding system has a fault. The brightness of each display mark can be adjusted to adapt to the environment during the day and at night.

[0027] Reference Figure 1 and Figure 3 A chamber is provided at the rear end of the front shell 16 (the side away from the display mark), and the circuit board 2 is installed in the chamber by means of plastic bolts. The light-emitting parts at the multiple display marks are interconnected with the circuit board 2, so that the light-emitting parts of the corresponding display marks are controlled by the circuit board 2. The cables of the multiple systems will also be plugged and connected to the circuit board 2 through plugs.

[0028] The tail cover 17 is located at the rear end of the front shell 16 to cover the opening of the chamber, and the tail cover 17 is fixedly connected to the front shell 16 by bolts. A plurality of heat dissipation holes are arranged at intervals on the tail cover 17, so that the heat generated by the circuit board 2 in the chamber can be dissipated. The outlet hole 11 is opened in the tail cover 17 and communicates with the chamber of the front shell 16, and the threaded barrel 12 is integrally formed on the side of the tail cover 17 away from the front shell 16.

[0029] Reference Figure 1 and Figure 4 The end of the threaded barrel 12 away from the instrument body 1 is provided with a slot 121, and the end of the tapered rubber sleeve 13 with a larger inner diameter is inserted into the slot 121. The corresponding tapered rubber sleeve 13 can be replaced for cables of different quantities and total outer diameters to ensure the stability of cable clamping, which also makes the application range more extensive.

[0030] The smallest outer diameter of the conical tail sleeve 14 is larger than the smallest inner diameter of the conical tail sleeve 14. Therefore, when the conical tail sleeve 14 rotates and approaches the tail cover 17, it can drive the end with the smallest inner diameter of the conical rubber sleeve 13 to shrink to wrap and clamp the cable. A plurality of deformation grooves 131 are arranged at intervals in the circumferential direction inside the conical rubber sleeve 13. When the conical rubber sleeve 13 is squeezed by the conical tail sleeve 14 and deforms and shrinks, the conical rubber sleeve 13 has a deformation space and can shrink better. In addition, compared with a flat inner wall surface, the provision of a plurality of deformation grooves 131 can also increase the friction between the conical rubber sleeve 13 and the cable. After the conical tail sleeve 14 drives the conical rubber sleeve 13 to clamp the cable, the cable is not easy to move relative to the conical rubber sleeve 13.

[0031] Combination Figure 2 Reference Figure 3 and Figure 4When the conical tail sleeve 14 rotates clockwise, it approaches the tail cover 17. The conical tail sleeve 14 includes a straight cylindrical portion and a conical portion. The straight cylindrical portion and the conical portion are integrally formed. The straight cylindrical portion is sleeved on the threaded tube 12 and is threadedly connected with the threaded tube 12. The conical portion drives the conical rubber sleeve 13 to deform. A ratchet ring 141 is integrally formed on the outer wall of the straight cylindrical portion. One side of the one-way rotation locking member 15 is inserted into any tooth groove of the ratchet ring 141 to lock the loose rotation (i.e., counterclockwise rotation) of the conical tail sleeve 14. In addition, the ratchet ring 141 can act as a friction texture, which can increase the friction force of the operator when rotating the conical tail sleeve 14, and is not prone to slipping.

[0032] Among them, when the one-way rotation locking piece 15 cooperates with the ratchet ring 141 (that is, when the one-way rotation locking piece 15 is inserted into the ratchet ring 141), the tapered tail sleeve 14 and the threaded tube 12 maintain a threaded connection state, so that during the entire process of connection between the tapered tail sleeve 14 and the threaded tube 12, the one-way rotation locking piece 15 can lock the counterclockwise rotation of the tapered tail sleeve 14.

[0033] Combination Figure 2 Reference Figure 3 and Figure 4 In this embodiment, the one-way rotation locking member 15 is preferably an arc-shaped ratchet spring. A mounting strip 18 is provided on the outer side of the threaded barrel 12, and the mounting strip 18 is integrally formed with the tail cover 17. A mounting groove is provided on the side of the mounting strip 18 close to the threaded barrel 12, and one side of the one-way rotation locking member 15 is inserted and fixed to the mounting groove by strong glue. Since the one-way rotation locking member 15 is an arc-shaped ratchet spring, after the ratchet ring 141 rotates clockwise to drive the one-way rotation locking member 15 to deform and give way, the one-way rotation locking member 15 can automatically reset under the action of its own elastic force.

[0034] A limit plate 19 is provided on one side of the one-way rotation locking member 15, and the limit plate 19 is fixed to the instrument body 1. When the conical tail sleeve 14 rotates counterclockwise, the limit plate 19 will limit the movement of the one-way rotation locking member 15, so that the one-way rotation locking member 15 is not easy to disengage from the tooth groove of the ratchet ring 141.

[0035] Combination Figure 2 Reference Figure 3 and Figure 4, wherein the extension length of the limit plate 19 is less than the extension length of the one-way rotation locking member 15, that is, after the conical rubber sleeve 13 cooperates with the conical tail sleeve 14 to clamp and fix the cable, the conical rubber sleeve 13 is still spaced a certain distance from the limit plate 19. On the one hand, it can ensure that the limit plate 19 does not interfere with the conical tail sleeve 14; on the other hand, after the conical tail sleeve 14 approaches the tail cover 17 and clamps and fixes the cable, the conical tail sleeve 14 is closer to the limit plate 19, so that the one-way rotation locking member 15 between the limit plate 19 and the conical tail sleeve 14 is shorter in length, the torque is shorter, and the limit plate 19 limits the one-way rotation locking member 15 more stably.

[0036] The implementation principle of a CAN bus instrument with adjustable backlight in the embodiment of the present application is as follows: after the cable is connected to the circuit board 2, it will pass through the threaded barrel 12 and the tapered tail sleeve 14, and then the tapered tail sleeve 14 will be rotated to move in the direction close to the instrument body 1, and the tapered tail sleeve 14 will drive the tapered rubber sleeve 13 to close and cooperate with the tapered tail sleeve 14 to clamp and fix the cable, so that the position of the cable after passing through the instrument body 1 is fixed, reducing the degree of freedom of the connection end of the cable and the circuit board 2, improving the stability of the connection between the cable and the circuit board 2, and ensuring the sensitivity of signal transmission. In addition, the one-way rotation locking member 15 can be inserted into any tooth groove of the ratchet ring 141 to limit the counterclockwise rotation of the tapered tail sleeve 14, so that the tapered tail sleeve 14 is not easy to loosen due to the vibration of the car, ensuring the stability of the cable after clamping and fixing.

[0037] Equivalently, the components included in the "assembly", "mechanism" and "device" of the present disclosure can also be flexibly combined, that is, modular production can be carried out according to actual conditions, modular assembly can be carried out as an independent module; or they can be assembled separately to form a module in the present device. The division of the above components in the present disclosure is only one of the embodiments, for the convenience of reading, and not to limit the scope of protection of the present disclosure. As long as the above components are included and have the same functions, it should be understood that it is an equivalent technical solution of the present disclosure.

[0038] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0039] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to another element, it may be directly connected to the other element or there may be a central element at the same time. Further, when an element is considered to be "fixedly connected" to another element, the two may be fixed in a detachable connection manner or in a non-detachable connection manner, such as socketing, snap-fitting, integral molding, welding, etc., which can be achieved in traditional technologies and will not be repeated here.

[0040] The above embodiment only expresses one implementation mode of the present disclosure, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the utility model concept of the present disclosure, which all belong to the protection scope of the present disclosure.

Claims

1. A CAN bus instrument with adjustable backlight, characterized in that: The invention comprises an instrument body (1) and a circuit board (2), wherein the circuit board (2) is installed inside the instrument body (1), the instrument body (1) is provided with a wire outlet hole (11), a threaded barrel (12) is provided at the wire outlet hole (11), the wire outlet hole (11) is located inside the threaded barrel (12), a conical rubber sleeve (13) is provided at one end of the threaded barrel (12) away from the instrument body (1), a conical tail sleeve (14) is sleeved on the threaded barrel (12) and is threadedly connected, and the conical rubber sleeve (13) A cable connected to the circuit board (2) is located in the conical tail sleeve (14) and passes through the conical rubber sleeve (13) and the conical tail sleeve (14). When the conical tail sleeve (14) moves in a direction close to the instrument body (1), the conical rubber sleeve (13) is driven to deform so as to clamp and fix the cable. A one-way rotation locking piece (15) is provided on the outer side of the threaded barrel (12). The one-way rotation locking piece (15) is suitable for locking the conical tail sleeve (14) in the direction of loosening the rotation.

2. The CAN bus instrument with adjustable backlight according to claim 1, characterized in that: A plurality of deformation grooves (131) are arranged at intervals in the circumferential direction inside the conical rubber sleeve (13).

3. The CAN bus instrument with adjustable backlight according to claim 1, characterized in that: A slot (121) is provided at one end of the threaded barrel (12) away from the instrument body (1), and the conical rubber sleeve (13) is interference-inserted into the slot (121).

4. The CAN bus instrument with adjustable backlight according to claim 1, characterized in that: The front end of the instrument body (1) is provided with a plurality of display marks, and each of the plurality of display marks is provided with a light-emitting element so that the corresponding display mark is illuminated, and the brightness of each of the plurality of light-emitting elements can be adjusted.

5. The CAN bus instrument with adjustable backlight according to any one of claims 1 to 4, characterized in that: A ratchet ring (141) is fixedly provided on the outer wall of the conical tail sleeve (14), and one side of the one-way rotation locking member (15) is inserted into any tooth groove of the ratchet ring (141) to lock the loose rotation of the conical tail sleeve (14).

6. The CAN bus instrument with adjustable backlight according to claim 5, characterized in that: When the one-way rotation locking piece (15) cooperates with the ratchet ring (141), the conical tail sleeve (14) and the threaded barrel (12) maintain a threaded connection state.

7. The CAN bus instrument with adjustable backlight according to claim 5, characterized in that: The one-way rotation locking member (15) is an arc-shaped ratchet spring.

8. The CAN bus instrument with adjustable backlight according to claim 7, characterized in that: A mounting strip (18) is provided on the outer side of the threaded barrel (12), a mounting groove is provided on a side of the mounting strip (18) close to the threaded barrel (12), and one side of the one-way rotation locking member (15) is inserted into and fixed to the mounting groove.

9. The CAN bus instrument with adjustable backlight according to claim 8, characterized in that: A limiting plate (19) is provided on one side of the one-way rotation locking member (15); the limiting plate (19) is fixed to the instrument body (1) and is suitable for limiting the reverse movement of the one-way rotation locking member (15).

10. The CAN bus instrument with adjustable backlight according to claim 9, characterized in that: The extending length of the limiting plate (19) is smaller than the extending length of the one-way rotation locking member (15).

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