Automobile relay with safety device

Abstract

The utility model relates to the field of automobile relays, in particular to an automobile relay with a safety device. Comprising a relay body, the relay body comprises a power supply pin, and the outer surface of the relay body is provided with a slot extending to the power supply pin; the power supply pins comprise an upper pin, a lower pin and a safety device which is arranged between the two pins and is arranged in the open slot; the safety device comprises a mounting plate; the two clamping parts are arranged on the two sides of the mounting plate and are electrically connected with the upper pin and the lower pin respectively; the fixing buckle is arranged on the mounting plate; the two ends of the protective tube abut against the clamping parts and are connected to the fixing buckles in a clamped mode. A cover plate is further included, and the cover plate is fixedly arranged on the open groove; according to the safety device, the service life of the safety device can be prolonged, and the maintenance or replacement cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of automobile relays, in particular to an automobile relay with a safety device. Background Art

[0002] Automotive relays are electrical switching devices that are widely used in automotive circuits to control various devices and systems. Traditional automotive relays have certain safety hazards during use, such as short circuits and overloads, which may lead to circuit failures, fires, and even safety accidents.

[0003] Existing automotive relays do not have an effective protection mechanism in the event of a fault. When an abnormal situation occurs, such as a circuit short circuit or current exceeding the rated value, the relay cannot cut off the power supply in time, resulting in safety risks.

[0004] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned technical problems and provide a technical effect of providing an automotive relay with a safety device which has a long service life and can replace a fuse.

[0006] In view of this, the utility model provides an automobile relay with a safety device, which is characterized by comprising:

[0007] A relay body, wherein the relay body includes a power pin and an outer surface is provided with a slot extending to the power pin;

[0008] The power pin includes an upper pin, a lower pin and a safety device arranged between the two pins and in the slot;

[0009] The safety devices include:

[0010] Mounting plate;

[0011] Two clamping parts, which are arranged on both sides of the mounting plate and are electrically connected to the upper pin and the lower pin respectively;

[0012] A fixing buckle, which is arranged on the mounting plate;

[0013] A fuse tube, both ends of which are in contact with the clamping portion and are clamped on the fixing buckle;

[0014] It also includes a cover plate, which is fixedly arranged on the slot.

[0015] Further, the clamping portion comprises:

[0016] A connector is provided with a slot on the lower end surface of the connector, and an inserting rod inserted into the slot is provided on the upper pin and the lower pin.

[0017] Furthermore, the cover plate also includes:

[0018] A sealing part, which is arranged on the lower end surface of the cover plate and inserted into the groove;

[0019] The sealing strip is provided on the sealing portion and between the inner wall of the groove and the sealing portion.

[0020] Furthermore, it also includes:

[0021] The fastening part is arranged on the lower end surface of the cover plate, and the lower end of the fastening part abuts against the mounting plate, and a fastening groove is arranged on the fastening part, and the fastening groove abuts against the upper surface of the fuse.

[0022] Furthermore, the bottom of the fastening portion abuts against the mounting plate.

[0023] Furthermore, it also includes:

[0024] The supporting foot is arranged at the lower end of the fastening part.

[0025] Furthermore, it also includes:

[0026] A pull rod, which is arranged on the surface of the cover plate and is telescopically mounted on the cover plate;

[0027] A receiving groove for receiving the pull rod;

[0028] The rod taking groove is arranged at the edge of the accommodating groove.

[0029] Furthermore, the clamping portion and the mounting plate are fixed via a dovetail groove structure, and the vertical direction of the bottom surface of the dovetail groove is consistent with the force direction of the clamping portion turning outward.

[0030] Furthermore, the slot is formed in a trapezoidal cross section that is narrow at the top and wide at the bottom.

[0031] Furthermore, the interference position between the clamping portion and the fuse tube is in the same straight line as the center of the fixing buckle.

[0032] The beneficial effects of the utility model are:

[0033] 1. When the relay is overloaded or short-circuited, the fuse in the fuse tube of the safety device provided in the utility model will melt, thereby breaking the circuit and protecting the relay. The blown fuse tube can be replaced later, thereby extending the service life of the safety device and saving maintenance or replacement costs.

[0034] 2. When the vertical line of the bottom of the dovetail groove of the utility model is consistent with the direction of the internal stress, the tensile resistance of the dovetail groove is the strongest. At this time, the internal stress is equivalent to the tensile force between the clamping part and the mounting plate, and this structure is the most stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0036] Figure 2 It is a structural schematic diagram of the safety device of the utility model;

[0037] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0038] Figure 4 for Figure 2 Schematic diagram of the structure of area A in the middle.

[0039] The symbols in the figure are:

[0040] 1. Relay body; 3. Slot; 4. Upper pin; 5. Lower pin; 6. Mounting plate; 7. Clamping part; 8. Fixing buckle; 9. Cover plate; 10. Connector; 11. Slot; 12. Insert rod; 13. Sealing part; 14. Sealing strip; 15. Fastening part; 16. Fastening groove; 17. Support foot; 18. Pull rod; 19. Rod removal groove; 20. Dovetail groove. Specific embodiments

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0042] Embodiment 1:

[0043] This embodiment provides an automotive relay with a safety device, characterized in that it includes:

[0044] A relay body 1, wherein the relay body 1 includes a power pin, and an outer surface thereof is provided with a slot 3 extending to the power pin;

[0045] The power pin includes an upper pin 4, a lower pin 5 and a safety device arranged between the two pins and in the slot 3;

[0046] The safety devices include:

[0047] Mounting plate 6;

[0048] Two clamping parts 7, which are arranged on both sides of the mounting plate 6 and are electrically connected to the upper pin 4 and the lower pin 5 respectively;

[0049] A fixing buckle 8, which is arranged on the mounting plate 6;

[0050] The fuse tube has two ends that abut against the clamping portion 7 and are clamped on the fixing buckle 8;

[0051] It also includes a cover plate 9 which is fixedly arranged on the slot 3 .

[0052] The relay body 1 is any existing automotive relay, and the relay body 1 has pins with various functions. The utility model further limits the structure of the power pin in the relay body 1, and opens a slot 3 on the side of the relay surface toward the power pin, and the slot 3 extends to the side of the power pin slot; the power pin is divided into three parts, namely, an upper pin 4, a fuse device and a lower pin 5, which are connected in sequence, that is, the power pin is cut off, and a fuse device is installed at the cut-off position, so that the relay of this embodiment has a circuit fuse function.

[0053] The structure of the insurance device includes: a mounting plate 6, two clamping parts 7, a fixing buckle 8 and a fuse tube; the mounting plate 6 is made of insulating material and has a certain strength, such as plastic material; a clamping part 7 is fixedly connected to each end of the mounting plate 6, and the clamping part 7 is made of a material with good electrical conductivity, such as tinned copper; and one clamping part 7 is electrically connected to the upper pin 4, and the other clamping part 7 is electrically connected to the lower pin 5; a fixing buckle 8 is installed on the upper end surface of the mounting plate 6, and the fixing buckle 8 is a circular ring structure with an opening. When installing the fuse tube, the position of the glass tube of the fuse tube can be clamped on the fixing buckle 8, and the two ends of the fuse tube can be pressed against the clamping part 7 to realize the installation and electrical connection of the fuse tube. Through the function of the fuse tube itself, when the relay is overloaded or short-circuited, the fuse in the fuse tube will melt to realize the circuit breaking, thereby protecting the relay, and the fuse tube that has been fused can be replaced later, thereby extending the service life of the insurance device and saving the cost of maintenance or replacement.

[0054] When installing the fuse, you can first assemble the entire fuse and then connect it to the power pin, which can prevent the pin from being pulled and shifted when the fuse is removed.

[0055] A cover plate 9 is also provided on the slot 3. The function of the cover plate 9 is to isolate the safety device from contact with the outside world, prevent damage caused by oxidation, and prevent electric shock.

[0056] Furthermore, the position where the clamping portion 7 contacts the fuse tube may be rounded.

[0057] Furthermore, the position where the fixing buckle 8 and the fuse tube are in sliding contact may be rounded.

[0058] Embodiment 2:

[0059] This embodiment provides an automotive relay with a safety device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0060] The clamping portion 7 comprises:

[0061] The connector 10 has a slot 11 on its lower end surface, and an inserting rod 12 inserted into the slot 11 is provided on the upper pin 4 and the lower pin 5 .

[0062] The connector 10 is a plate-like structure extending from the clamping portion 7 toward the upper and lower pins 5. The connector 10 is provided with a plurality of slots 11. Insertion rods 12 corresponding to the slots 11 are provided on the upper surfaces of the upper pins 4 and the lower pins 5. During installation, the safety device is assembled as a whole, and then the connector 10 is plugged and installed with the two pins, thereby realizing a detachable connection structure between the safety device and the pins that is easy to disassemble.

[0063] The cover plate 9 also includes:

[0064] The sealing portion 13 is arranged on the lower end surface of the cover plate 9 and inserted into the groove 3;

[0065] The sealing strip 14 is sleeved on the sealing portion 13 and between the inner wall of the groove 3 and the sealing portion 13 .

[0066] A sealing portion 13 is further provided under the cover plate 9. The size of the sealing portion 13 is the same as that of the slot 3 and can be loosely matched with the slot 3. A mounting groove is provided on the outer surface of the sealing portion 13. A sealing strip 14 is sleeved on the outer peripheral side of the sealing portion 13. The sealing strip 14 is made of rubber and a plurality of sealing strips can be provided to increase the sealing performance. This structure makes the sealing of the slot 3 tighter.

[0067] Also includes:

[0068] The fastening part 15 is arranged on the lower end surface of the cover plate 9, and the lower end of the fastening part 15 abuts against the mounting plate 6, and a fastening groove 16 is provided on the fastening part 15, and the fastening groove 16 abuts against the upper surface of the fuse.

[0069] The fastening portion 15 is formed by extending downward on the lower end surface of the cover plate 9, and a fastening groove 16 is opened upward on the lower end surface of the fastening portion 15. During installation, the fuse is inserted into the fastening groove 16 until the inner surface of the fastening groove 16 abuts against the upper surface of the fuse. The cooperation between the fastening groove 16 and the fuse makes the installation of the fuse more stable.

[0070] The bottom of the fastening portion 15 abuts against the mounting plate 6 .

[0071] The mounting plate 6 can be fixed in the slot 3 by having the bottom of the fastening portion 15 abut against the mounting plate 6 , and a limit is provided on the upper end surface of the mounting plate 6 , so that the mounting plate 6 can be installed more stably.

[0072] Also includes:

[0073] The support leg 17 is disposed at the lower end of the fastening portion 15 .

[0074] The support foot 17 is arranged at the lower end of the fastening part 15, and the area of ​​the support foot 17 is larger than the area of ​​the lower end of the fastening part 15. The provision of the support foot 17 can increase the contact area between the lower end of the fastening part 15 and the mounting plate 6, reduce the pressure, and prevent the mounting plate 6 from breaking due to excessive pressure.

[0075] Embodiment 3:

[0076] This embodiment provides an automotive relay with a safety device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0077] Also includes:

[0078] A pull rod 18, the pull rod 18 is arranged on the surface of the cover plate 9, and the pull rod 18 is telescopically mounted on the cover plate 9;

[0079] A receiving groove for receiving the pull rod 18;

[0080] The rod taking groove 19 is arranged at the edge of the accommodating groove.

[0081] The pull rod 18 is a U-shaped structure, and its two ends can be slid up and down in the cover plate 9. The end is provided with a flange to prevent the pull rod 18 from escaping from the cover plate 9. The pull rod 18 is a hand-pulled part used to conveniently remove the cover plate 9. When the pull rod 18 needs to be retracted, the pull rod 18 is slid downward until it enters the receiving groove to achieve the storage of the pull rod 18, so that the outer surfaces are the same surface, preventing the pull rod 18 from being damaged by external forces, and a rod removal groove 19 communicated with the receiving groove is provided on one side of the receiving groove, so that the pull rod 18 can be conveniently removed from the receiving groove through the rod removal groove 19.

[0082] The clamping portion 7 and the mounting plate 6 are fixed via a dovetail groove 20 structure, and the vertical direction of the bottom surface of the dovetail groove 20 is consistent with the force direction of the clamping portion 7 turning outward.

[0083] When the clamping part 7 clamps the fuse, it deforms outward. At this time, there will be an internal stress inclined upward at the connection position between the clamping part 7 and the mounting plate 6. When the clamping part 7 is connected to the mounting plate 6 through the dovetail groove 20 structure, when the vertical line of the bottom of the dovetail groove 20 is horizontal, the internal stress will destroy the connection structure of the dovetail groove 20; when the vertical line of the bottom of the dovetail groove 20 is consistent with the direction of the internal stress, the dovetail groove 20 has the strongest anti-tensile effect. At this time, the internal stress is equivalent to the tensile force between the clamping part 7 and the mounting plate 6, and this structure is the most stable.

[0084] The slot 11 is formed in a trapezoidal cross section that is narrow at the top and wide at the bottom.

[0085] By configuring the slot 11 to have a trapezoidal cross section that is narrow at the top and wide at the bottom, the insertion rod 12 can be more easily inserted into the slot 11 .

[0086] The position where the clamping portion 7 and the fuse tube are most tightly in contact is in the same straight line as the center of the fixing buckle 8 .

[0087] By arranging the position where the clamping part 7 and the fuse tube are most tightly in contact with each other and the center of the fixing buckle 8 on the same straight line, the position where the fuse tube is fixed by the fixing buckle 8 is the position where the interference effect with the clamping part 7 is the tightest.

[0088] Furthermore, at least two fastening parts 15 are provided to increase stability.

[0089] Furthermore, at least two fixing buckles 8 are provided to increase stability.

[0090] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which belong to the protection scope of the present application.

Claims

1. An automotive relay with a safety device, characterized in that: include: A relay body (1), wherein the relay body (1) includes a power pin, and an outer surface is provided with a slot (3) extending to the power pin; The power pin comprises an upper pin (4), a lower pin (5) and a safety device arranged between the two pins and in the slot (3); The safety devices include: Mounting plate (6); Two clamping parts (7), the two clamping parts (7) are arranged on both sides of the mounting plate (6) and are electrically connected to the upper pin (4) and the lower pin (5) respectively; A fixing buckle (8), wherein the fixing buckle (8) is arranged on the mounting plate (6); A fuse tube, both ends of which are in contact with the clamping portion (7) and are clamped on the fixing buckle (8); It also comprises a cover plate (9), which is fixedly arranged on the slot (3).

2. The automotive relay with a safety device according to claim 1, characterized in that: The clamping portion (7) comprises: A connector (10) is provided with a slot (11) on the lower end surface of the connector (10), and an inserting rod (12) inserted into the slot (11) is provided on the upper pin (4) and the lower pin (5).

3. The automotive relay with a safety device according to claim 1, characterized in that: The cover plate (9) further comprises: A sealing portion (13), the sealing portion (13) being arranged on the lower end surface of the cover plate (9) and inserted into the groove (3); The sealing strip (14) is sleeved on the sealing portion (13) and is between the inner wall of the groove (3) and the sealing portion (13).

4. The automotive relay with a safety device according to claim 1, characterized in that: Also includes: A fastening portion (15) is arranged on the lower end surface of the cover plate (9), and the lower end of the fastening portion (15) abuts against the mounting plate (6), and a fastening groove (16) is arranged on the fastening portion (15), and the fastening groove (16) abuts against the upper surface of the fuse.

5. The automotive relay with a safety device according to claim 4, characterized in that: The bottom of the fastening portion (15) abuts against the mounting plate (6).

6. The automotive relay with a safety device according to claim 5, characterized in that: Also includes: A support foot (17), the support foot (17) is arranged at the lower end of the fastening portion (15).

7. The automotive relay with a safety device according to claim 1, characterized in that: Also includes: A pull rod (18), the pull rod (18) is arranged on the surface of the cover plate (9), and the pull rod (18) is telescopically mounted on the cover plate (9); A receiving groove, the receiving groove receiving the pull rod (18); A rod taking groove (19) is provided at the edge of the accommodating groove.

8. The automotive relay with a safety device according to claim 1, characterized in that: The clamping portion (7) and the mounting plate (6) are fixed via a dovetail groove (20) structure, and the vertical direction of the bottom surface of the dovetail groove (20) is consistent with the force direction of the clamping portion (7) turning outward.

9. The automotive relay with a safety device according to claim 1, characterized in that: The slot (11) is formed in a trapezoidal cross section which is narrow at the top and wide at the bottom.

10. The automotive relay with a safety device according to claim 1, characterized in that: The position where the clamping portion (7) and the fuse tube are most tightly in contact is in the same straight line as the center of the fixing buckle (8).

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