Starter relay and starter with same

Abstract

The utility model discloses a starter relay and a starter equipped with the same, belonging to the starter technical field, the starter relay comprises a relay main body and a sheath, the sheath comprises a tubular housing and a crossbeam arranged in the middle of the housing, the crossbeam divides the housing into two glue injection holes, and the two glue injection holes are communicated with each other. Two wiring terminals of the relay main body respectively penetrate through the two glue injection holes, one end of the shell is mounted on a supporting cover of the relay main body, and a lug plate of a lead is mounted in the wiring terminals and then is sealed by glue injection in the glue injection holes; the starter comprises the starter relay, corrosive substances in a corrosive environment can be isolated after the glue is solidified, the corrosion resistance of the relay lead lug is improved, and the service life of the starter in a complex environment is prolonged; the cross beam on the sheath can play a role in supporting the sheath to prevent large deformation, and meanwhile, the connection between the two wiring terminals caused by foreign matters, corrosion and the like can be effectively avoided, and the risk of short circuit is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of starter technology, specifically relating to a starter relay and a starter equipped with the relay. Background Technology

[0002] Given the high humidity and high concentration of corrosive media such as salt and sulfur in mining environments, starter relays in mining equipment, especially special vehicles like mine tunnel trucks, are prone to failure during the warranty period due to corrosion of the lead wire terminals. Testing of failed components indicates that electrochemical corrosion caused by the penetration of corrosive media is the primary cause of premature product failure.

[0003] The current technical solution for starter relays involves treating the relay leads and fastening nuts with an anti-corrosion coating and covering the leads with a rubber protective sleeve. Failure analysis revealed the following technical defects in this solution: 1. Insufficient sealing performance: Micro-gaps exist at the junction of the rubber protective sleeve and the leads, allowing corrosive media to penetrate along the interface and form a permeation channel; 2. Electrolyte accumulation: The permeating media continuously accumulates in the confined space, forming a high-concentration corrosive electrolyte solution; 3. Increased electrochemical corrosion: Under a 24V DC potential, the connecting piece (anode) and the nut (cathode) form a galvanic cell system, accelerating the electrolytic corrosion of metal components; 4. Shortened structural failure cycle: Actual measurement data shows that the mean time between failures (MTBF) of the conventional structure under mining conditions is significantly shorter than that under standard conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a starter relay and a starter with the relay, which can reduce corrosion in highly corrosive environments, extend the service life of the leads, and ensure the normal operation of the starter.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A starter relay includes a relay body and a sheath. The sheath includes a tubular outer shell and a crossbeam disposed in the middle of the outer shell. The crossbeam divides the outer shell into two injection holes. Two terminals of the relay body pass through the two injection holes respectively. One end of the outer shell is mounted on a support cover of the relay body. After the lead wire is mounted on the terminal, the injection holes are sealed with glue.

[0007] Furthermore, the lower end of the outer shell is interference-fitted with the support cover.

[0008] Furthermore, the axial length of the crossbeam is less than the axial length of the outer casing, and the upper edge of the crossbeam is flush with the upper edge of the outer casing.

[0009] Furthermore, the side of the housing near the connector or control terminal of the relay body is recessed inward to form a clearance portion.

[0010] Furthermore, the lower end of the clearance portion is recessed to avoid the engagement position of the connector or the control terminal with the support cover.

[0011] Furthermore, the sheath is a rubber sheath.

[0012] A starter motor, including the starter relay described above.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] In the starter relay and starter motor equipped with the relay disclosed in this utility model, the sheath combined with adhesive can isolate corrosive substances in a corrosive environment, increase the corrosion resistance of the relay lead terminals, and extend the service life of the starter motor in complex environments; the crossbeam on the sheath can support the sheath and prevent large deformation, while also effectively preventing the connection between the two terminals due to foreign objects, corrosion, etc., reducing the risk of short circuit.

[0015] In this utility model, the structure of the avoidance part can avoid the connector on the relay body, avoid interference with the connector when installing the protective sleeve, and prevent the protective sleeve and the relay from having gaps and causing glue overflow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the starter relay of the present invention before glue injection, representing the first embodiment of the invention.

[0017] Figure 2 This is a schematic diagram of the structure of the starter relay of the present invention after glue injection in the first embodiment;

[0018] Figure 3 This is a schematic diagram of the starter relay of the present invention before glue injection, representing the second embodiment of the invention.

[0019] Figure 4 This is a schematic diagram of the second embodiment of the starter relay of this utility model after glue injection;

[0020] Figure 5 This is a schematic diagram of the structure at the upper end of the sheath;

[0021] Figure 6 This is a schematic diagram of the structure at the lower end of the sheath;

[0022] In the diagram, 1-relay body, 11-support cover, 12-terminal block, 13-plug, 14-control terminal, 15-lead wire, 2-sheath, 21-outer shell, 22-beam, 23-glue injection hole, 24-avoidance part. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0024] Example 1:

[0025] like Figures 1 to 4 As shown, a starter relay includes a relay body 1 and a sheath 2. The sheath 2 includes a tubular outer shell 21 and a crossbeam 22 disposed in the middle of the outer shell 21. The crossbeam 22 divides the outer shell 21 to form two injection holes 23. The two terminals 12 of the relay body 1 pass through the two injection holes 23 respectively. One end of the outer shell 21 is mounted on a support cover 11 of the relay body 1. The connecting piece of the lead wire 15 is installed in the injection hole 23 after the terminal 12 is installed and sealed with glue. The crossbeam 22 on the sheath 2 serves two purposes: first, to support the sheath 2 and prevent large deformation; second, to isolate the left and right leads 15 to prevent short circuit.

[0026] The specific installation method of the sheath 2 is as follows: First, assemble the leads 15 onto the relay body 1, that is, install the connecting pieces of the two leads 15 onto the terminal block 12 and tighten them with the fastening nuts. Then, pass the two leads 15 through the two injection holes 23 respectively, and install the sheath 2 onto the relay body 1. Finally, inject sealant, such as 504 glue, into the injection holes 23. After the glue solidifies, the connecting pieces of the leads 15 and the fastening nuts are sealed in the sheath 2, which can isolate corrosive substances in the corrosive environment and enhance the corrosion resistance of the connecting pieces.

[0027] The lower end of the outer casing 21 is interference-fitted with the support cover 11 of the relay body 1. Figure 6 The lower end of the outer casing 21 is shown in the diagram, where the sheath 2 is a rubber sheath 2. Because the lower end of the sheath 2 is press-fitted with the support cover 11, the glue will not flow out along the gap after sealing.

[0028] like Figures 1 to 4 As shown, the two terminals 12 of the relay are used for power input and output respectively, and a connector 13 needs to be installed at one of the terminals 12. Figure 1 and Figure 2 (as shown) or control terminal 14 ( Figure 3 and Figure 4(As shown) is used to input battery voltage as a control signal. Affected by connector 13 or control terminal 14, the position between the two terminals 12 is higher than the axial end face of support cover 11.

[0029] like Figure 5 and Figure 6 As shown, the axial length of the crossbeam 22 is less than the axial length of the housing 21 (here, the axial direction refers to the axial direction of the relay), and the upper edge of the crossbeam 22 is flush with the upper edge of the housing 21. Therefore, the lower end of the crossbeam 22 can provide clearance between the two terminals 12.

[0030] The outer casing 21 is recessed inward on the side near the connector 13 or control terminal 14 of the relay body 1 to form a relief part 24. The lower end of the relief part 24 is recessed to avoid the joint position of the connector 13 or control terminal 14 with the support cover 11. That is, the structure of the relief part 24 is a contour structure of the joint position of the connector 13 and control terminal 14 with the support cover 11. It can be used in relays with both the connector 13 and control terminal 14. It can avoid interference with the connector 13 or control terminal 14 when the protective sleeve 2 is installed, and prevent the protective sleeve 2 from gapping with the relay and causing glue overflow.

[0031] Example 2:

[0032] A starter motor includes a DC motor, a transmission mechanism, and an electromagnetic switch. The electromagnetic switch includes the starter relay as described in Embodiment 1, which can effectively seal the terminals of the relay leads, increasing the corrosion resistance of the relay lead terminals and extending the service life of the starter motor in complex environments.

[0033] The starter relay and starter motor equipped with the present invention, by installing a protective sleeve on the relay body and injecting sealant into the two injection holes of the protective sleeve, can seal the lead wire terminals of the relay, which can slow down corrosion in highly corrosive environments, extend the service life of the lead wires, and ensure the normal operation of the starter motor.

[0034] In the description of this specification, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this specification, unless otherwise expressly defined, the terms "setup", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0036] While specific embodiments of this utility model have been described above, those skilled in the art should understand that the described embodiments are merely some, not all, embodiments of this utility model. These are merely illustrative examples, and the scope of protection of this utility model is defined by the claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model and without any inventive effort, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A starter relay characterized by comprising: The relay body (1) and the sheath (2) are included, the sheath (2) includes a tubular shell (21) and a crossbeam (22) arranged in the middle position of the shell (21), the crossbeam (22) separates the shell (21) to form two glue injection holes (23), two wire terminals (12) of the relay body (1) pass through the two glue injection holes (23) respectively, one end of the shell (21) is mounted on the support cover (11) of the relay body (1), and the terminal of the lead wire (15) is mounted in the glue injection hole (23) behind the wire terminal (12) and is sealed by glue injection.

2. The starter relay of claim 1, wherein The lower end of the shell (21) is in interference fit with the support cover (11).

3. The starter relay of claim 2, wherein The axial length of the crossbeam (22) is lower than the axial length of the shell (21), and the upper end edge of the crossbeam (22) is flush with the upper end edge of the shell (21).

4. The starter relay of claim 3, wherein The shell (21) is recessed inward on the side close to the connector (13) or the control terminal (14) of the relay body (1) to form an avoiding part (24).

5. The starter relay of claim 4, wherein, The lower end of the avoiding part (24) is recessed to avoid the joint position of the connector (13) or the control terminal (14) and the support cover (11).

6. The starter relay of claim 2, wherein The sheath (2) is a rubber sheath.

7. A starter motor characterised in that, The starting relay according to any one of claims 1 to 6 is included.

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