WO2024066817A1

WO2024066817A1 - Relay

Info

Publication number: WO2024066817A1
Application number: PCT/CN2023/114478
Authority: WO
Inventors: 余航飞; 姚师培; 葛森彪; 胡学波; 李涛涛
Original assignee: 杭州天铭科技股份有限公司
Priority date: 2022-09-30
Filing date: 2023-08-23
Publication date: 2024-04-04
Also published as: CN218631820U

Abstract

A relay, comprising a relay body (1), diodes (2), and a mounting member (3), wherein the relay body (1) comprises a first connecting portion (11); the diodes (2) are connected to wire harnesses (12) of the relay body (1); the mounting member (3) comprises a second connecting portion (31) and a plurality of fixing portions (32, 33); the first connecting portion (11) is fitted to the second connecting portion (31) to detachably mount the mounting member (3) on the relay body (1); placement slots (321, 331) for mounting the diodes (2) are formed on the fixing portions. By means of a detachable fitting relationship between the first connecting portion and the second connecting portion, the mounting member is detachably mounted on the relay body, so that the convenience of replacing the mounting member can be improved; and the placement slots are formed on the fixing portions, and the diodes are mounted in the placement slots, so that the fixing portions protect the diodes and avoid damage caused by the diodes being squeezed, thereby improving the safety performance of the relay.

Description

Relay

Technical Field

The present disclosure relates to the technical field of electric control devices, and in particular to a relay.

Background technique

A relay is an electrical control device. When the change of the input quantity (excitation quantity) reaches the specified requirement, it causes the controlled quantity to undergo a predetermined step change in the electrical output circuit. It has an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). It is usually used in automated control circuits. It is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

In addition, diodes are connected in parallel at both ends of the relay coil to protect the circuit. However, in the related art, the diode on the relay is not fixed or fixed with a cable tie, which can easily cause damage to the diode or the heat shrink tube used to protect the diode during assembly, thereby causing the diode to break down or short-circuit. Since the diode is fixed with a cable tie, the diode needs to be fixed to the existing wiring harness in the circuit, and its position can only be relatively fixed. In addition, the relay is installed in the control box, and it is impossible to ensure whether the diode will be pressed by the control box around it after assembly, and there is also a safety hazard.

Summary of the invention

The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

To this end, an embodiment of the present disclosure proposes a relay with higher safety performance, which has a diode protection structure and a reasonable and standardized structural layout.

The relay of the disclosed embodiment includes: a relay body, a diode and a mounting piece, the relay body includes a first connecting part, the diode is connected to the wiring harness of the relay body, the mounting piece includes a second connecting part and a plurality of fixing parts, the first connecting part cooperates with the second connecting part to detachably mount the mounting piece on the relay body, and the fixing part is provided with a placement groove for mounting the diode.

The relay of the disclosed embodiment, through the detachable matching relationship between the first connecting part and the second connecting part, enables the mounting part to be detachably mounted on the relay body, thereby improving the convenience of replacing the mounting part. By providing a placement groove on the fixing part, the diode is installed in the placement groove, so that the fixing part plays a protective role on the diode, thereby avoiding the problem of damage to the diode caused by squeezing, and improving the safety performance of the relay.

Therefore, the relay of the embodiment of the present disclosure solves the problem of potential safety hazards of diodes.

In some embodiments, the second connection portion is annular, and is sleeved on the outer peripheral side of the first connection portion, and at least a portion of the outer peripheral wall of the first connection portion abuts against at least a portion of the inner peripheral wall of the second connection portion.

In some embodiments, the mounting member also includes a sealing portion, the outer peripheral wall of the sealing portion is connected to the inner peripheral wall of the second connecting portion, and the sealing portion is provided with a plurality of mounting holes, and the plurality of mounting holes correspond one-to-one to the plurality of contacts on the relay body, and the contacts on the relay body pass through the corresponding mounting holes.

In some embodiments, the plurality of fixing portions can be divided into a first fixing portion and a second fixing portion according to the extension direction of the placement groove opened thereon, the placement groove on the first fixing portion extends along the first direction, and the placement groove on the second fixing portion extends along the second direction.

In some embodiments, there are two first fixing portions, and the two first fixing portions are symmetrically arranged on two sides of the second connecting portion in the second direction.

In some embodiments, the placement groove on the first fixing portion is a first placement groove, and the first placement groove is opened on the end surface of the first fixing portion close to the relay body. The mounting member also includes two isolation portions, and the two isolation portions correspond one-to-one to the two first fixing portions. The isolation portions are arranged on the outer peripheral wall of the second connecting portion, and the isolation portions are located on the side of the first fixing portion close to the relay body.

In some embodiments, a gap is provided between the isolation portion and the first fixing portion, and a distance of the gap in the third direction is smaller than a minimum diameter of the diode.

In some embodiments, the first placement groove includes a first groove segment and a second groove segment that are connected, the cross-sectional area of the first groove segment is larger than the cross-sectional area of the second groove segment, and the cross-sectional area of the second groove segment is larger than the minimum cross-sectional area of the diode and smaller than the maximum cross-sectional area of the diode.

In some embodiments, there are two second fixing parts, and the two second fixing parts are spaced apart along the second direction. The placement groove on the second fixing part is a second placement groove. The second fixing part includes a vertical section, a horizontal section and a curved section. One end of the vertical section is connected to the outer peripheral wall of the second connecting part, and the other end of the vertical section is connected to the end surface of the horizontal section close to the vertical section. The curved section is located on the side of the vertical section away from the relay body, and one end of the curved section away from the second connecting part is connected to the horizontal section. The vertical section, the horizontal section and the curved section jointly define the second placement groove.

In some embodiments, a distance in the first direction between an end of the curved segment close to the second connecting portion and an outer peripheral wall of the second connecting portion is smaller than a minimum diameter of the diode.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a relay body of a relay according to an embodiment of the present disclosure.

FIG. 2 is a schematic diagram of a mounting member of a relay according to an embodiment of the present disclosure.

FIG. 3 is a schematic diagram of a diode of a relay according to an embodiment of the present disclosure being installed in a first placement groove along a vertical direction.

FIG. 4 is a right side schematic diagram of a mounting member of a relay and a vertically mounted diode according to an embodiment of the present disclosure.

FIG. 5 is a cross-sectional schematic diagram of a mounting member of a relay and a vertically mounted diode according to an embodiment of the present disclosure.

FIG. 6 is a schematic diagram of a relay diode installed in a second placement groove along a horizontal direction according to an embodiment of the present disclosure.

FIG. 7 is a right side schematic diagram of a mounting member of a relay and a horizontally mounted diode according to an embodiment of the present disclosure.

Reference numerals:
Relay body 1, first connection part 11, wiring harness 12, contact 13,
Diode 2,
The mounting member 3 , the second connecting portion 31 , the first fixing portion 32 , the first placement groove 321 , the second fixing portion 33 , the second placement groove 331 , the vertical section 332 , the horizontal section 333 , the curved section 334 , the sealing portion 34 , the mounting hole 341 , and the isolation portion 35 .

Detailed ways

Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

The relay according to the embodiment of the present disclosure will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 7 , the relay of the embodiment of the present disclosure includes: a relay body 1, a diode 2 and a mounting member 3. The relay body 1 includes a first connecting portion 11, and the diode 2 is connected to a wiring harness 12 of the relay body 1. The mounting member 3 includes a second connecting portion 31 and a plurality of fixing portions, and the first connecting portion 11 cooperates with the second connecting portion 31 to detachably mount the mounting member 3 on the relay body 1. A placement groove for mounting the diode 2 is provided on the fixing portion.

It can be understood that, as shown in Figure 1, the relay body 1 has multiple wiring harnesses 12 leading out from the relay body 1, and two of the multiple wiring harnesses 12 are connected to diodes 2 to prevent the generated high-voltage current from flowing back and causing damage to the relay body 1, thereby protecting the circuit connected to the relay of the disclosed embodiment.

Optionally, as shown in FIG1 , a plurality of wire harnesses 12 are led out from the upper end face of the relay body 1, and the first connection portion 11 is provided on the front end face of the relay body 1, the first connection portion 11 is annular, and the first connection portion 11 is arranged along the front-to-back direction. The relay body 1 also has a plurality of contacts 13, the contacts 13 are located on the front end face of the relay body 1, the contacts 13 are arranged along the front-to-back direction, and the plurality of contacts 13 are all located on the inner side of the first connection portion 11.

Optionally, as shown in Figures 1 to 7, the mounting member 3 includes a second connecting portion 31. The second connecting portion 31 and the first connecting portion 11 have a detachable matching relationship, so that the mounting member 3 can be detachably mounted on the relay body 1 through the matching relationship between the two.

Optionally, as shown in FIG3 and FIG6 , a placement groove for installing the diode 2 is provided on the fixing part. After the diode 2 is connected to the wiring harness 12 on the relay body 1, the diode 2 is installed in the placement groove, so that the fixing part plays a protective role for the diode 2, thereby preventing the diode 2 from being squeezed and damaged by other parts. In addition, the position of the fixing part can be planned so that the diode 2 is fixed at a suitable position on the relay body 1, thereby making the structural layout of the relay of the embodiment of the present disclosure reasonable and standardized.

Furthermore, after the diode 2 is installed in the placement groove, the harness terminal and the harness end plug are installed on the diode 2, and then the harness end plug is fixed on the corresponding contact 13. Specifically, as shown in Figures 3 and 6, there are two diodes 2, and the two diodes 2 are respectively connected to the two harnesses 12 on the relay body 1. The two diodes 2 are placed in the placement grooves on the two fixing parts, and then the harness 12 is bent upward and forward (the embodiment of Figure 3) or the harness 12 is bent downward and forward (the embodiment of Figure 6), so that the two harness end plugs are respectively connected to the contact 13 located on the far left and the contact 13 located on the far right, thereby further playing the role of fixing the diode 2.

Therefore, the relay of the embodiment of the present disclosure, through the detachable matching relationship between the first connecting portion 11 and the second connecting portion 31, enables the mounting member 3 to be detachably mounted on the relay body 1, thereby improving the convenience of replacing the mounting member 3. By providing a placement groove on the fixing portion, the diode 2 is installed in the placement groove, so that the fixing portion plays a protective role on the diode 2, thereby avoiding the problem of damage caused by squeezing of the diode 2, and improving the safety performance of the relay.

Therefore, the relay of the embodiment of the present disclosure solves the problem of potential safety hazard of the diode 2.

In some embodiments, as shown in Figures 1 to 7, the second connection portion 31 is annular and is sleeved on the outer peripheral side of the first connection portion 11. At least part of the outer peripheral wall of the first connection portion 11 abuts against at least part of the inner peripheral wall of the second connection portion 31.

Optionally, the first connection part 11 is made of aluminum, the second connection part 31 is made of plastic, and the shape of the first connection part 11 is substantially the same as the shape of the second connection part 31. It is understandable that the second connection part 31 is sleeved on the first connection part 11, and the second connection part 31 has a certain elasticity, so that the inner peripheral wall of the second connection part 31 is against the outer peripheral wall of the first connection part 11, so that the first connection part 11 and the second connection part 31 cooperate with each other, and then the mounting member 3 is installed on the relay body 1.

In some embodiments, as shown in Figures 1 to 7, the mounting member 3 also includes a sealing portion 34, the outer peripheral wall of the sealing portion 34 is connected to the inner peripheral wall of the second connecting portion 31, and a plurality of mounting holes 341 are provided on the sealing portion 34. The plurality of mounting holes 341 correspond one-to-one to the plurality of contacts 13 on the relay body 1, and the contacts 13 on the relay body 1 pass through the corresponding mounting holes 341.

Optionally, as shown in Fig. 2, the sealing portion 34 is located at the opening of the front end of the second connecting portion 31. In other words, the sealing portion 34 is a front cover of the second connecting portion 31. The sealing portion 34 is provided with a plurality of mounting holes 341, which extend in the front-to-back direction and penetrate the sealing portion 34.

1 and 2, there are four contacts 13 on the relay body 1, and there are four mounting holes 341 on the sealing portion 34, and the four contacts 13 correspond to the four mounting holes 341. When the mounting member 3 is mounted on the relay body 1, the contacts 13 pass through the corresponding mounting holes 341.

Furthermore, as shown in Figures 1 and 2, the mounting hole 341 is a square hole, and the size of the mounting hole 341 matches the size of the contact 13, so that after the contact 13 passes through the mounting hole 341, the upper end face, lower end face, left end face and right end face of the contact 13 are respectively fitted with the hole wall of the mounting hole 341, thereby improving the assembly effect between the mounting member 3 and the contact member body.

In some embodiments, the plurality of fixing portions can be divided into a first fixing portion 32 and a second fixing portion 33 according to the extension direction of the placement grooves thereon. The placement grooves on the first fixing portion 32 extend along the first direction, and the placement grooves on the second fixing portion 33 extend along the second direction.

It is understandable that the extending directions of the placement grooves provided on the plurality of fixing parts are different. The first direction refers to the up-down direction as shown in FIG. 2 , and the second direction refers to the left-right direction as shown in FIG. 2 . That is, according to actual working conditions, the diode 2 can be installed in placement grooves with different extending directions, thereby improving the adaptability of assembly.

In some embodiments, as shown in FIG. 2 to FIG. 5 , there are two first fixing portions 32 , and the two first fixing portions 32 are symmetrically disposed on both sides of the second connecting portion 31 in the second direction.

Optionally, as shown in FIG2 , the two first fixing portions 32 are located on the left and right sides of the second connecting portion 31 and are symmetrically arranged. The right end of the first fixing portion 32 located on the left side of the second connecting portion 31 is connected to the left end face of the second connecting portion 31, and the left end of the first fixing portion 32 located on the right side of the second connecting portion 31 is connected to the right end face of the second connecting portion 31. It can be understood that, as shown in FIG3 , the two diodes 2 are respectively arranged on the left and right sides of the second connecting portion 31.

In some embodiments, as shown in FIGS. 2 to 5 , the placement groove on the first fixing portion 32 is a first placement groove 321, and the first placement groove 321 is provided on the end surface of the first fixing portion 32 close to the relay body 1. The mounting member 3 further includes two isolation portions 35, the two isolation portions 35 correspond to the two first fixing portions 32 one by one, the isolation portions 35 are provided on the outer peripheral wall of the second connecting portion 31, and the isolation portions 35 are located on one side of the first fixing portion 32 close to the relay body 1.

Optionally, as shown in FIGS. 2 to 5 , the first placement groove 321 is provided on the rear end surface of the first fixing portion 32 , the first placement groove 321 extends in the up-down direction, and the upper and lower ends of the first placement groove 321 extend to the upper and lower end surfaces of the first fixing portion 32 .

Specifically, the cross section of the first placement groove 321 is semicircular, and the size of the first placement groove 321 matches the size of the outer wall of the diode 2, so that the outer wall of the diode 2 is in contact with the groove wall of the first placement groove 321 when the diode 2 is placed inside the diode 2.

Optionally, as shown in FIGS. 2 to 5 , the mounting member 3 further includes two isolating portions 35, which are located on the left and right sides of the second connecting portion 31 and are symmetrically arranged. The left end faces of the two connecting parts 31 are connected, and the left end of the isolating part 35 located on the right side of the second connecting part 31 is connected to the right end face of the second connecting part 31. The two isolating parts 35 correspond to the front and rear positions of the two first fixing parts 32, and the isolating part 35 is located behind the first isolating part 35.

Therefore, by providing the isolation portion 35 , the diode 2 and the relay body 1 are separated from each other, so as to avoid the problem of short circuit caused by contact between the diode 2 and the relay body 1 , thereby improving the safety of the relay of the embodiment of the present disclosure.

Further, as shown in FIG. 2 to FIG. 5 , there is a gap between the isolation portion 35 and the first fixing portion 32 , and the distance of the gap in the third direction is smaller than the minimum diameter of the diode 2 .

It can be understood that, as shown in Fig. 1, the diode 2 includes a first section, a second section and a third section connected in sequence, the diameters of the first section and the third section are the same, and the diameters of the first section and the third section are smaller than the diameter of the second section. That is, the minimum diameter of the diode 2 refers to the diameters of the first section and the third section.

Therefore, the diode 2 is inserted into the first placement groove 321 along the up-down direction, and under the restriction of the first fixing portion 32 and the isolation portion 35 , the diode 2 is prevented from coming out from the side of the first placement groove 321 , thereby improving the assembly stability of the diode 2 .

In some embodiments, as shown in Figure 5, the first placement groove 321 includes a first groove section and a second groove section that are connected, the cross-sectional area of the first groove section is larger than the cross-sectional area of the second groove section, and the cross-sectional area of the second groove section is larger than the minimum cross-sectional area of the diode 2 and smaller than the maximum cross-sectional area of the diode 2.

Optionally, as shown in Fig. 5, the first slot segment is located above the second slot segment, the cross-sectional area of the first slot segment is larger than the cross-sectional area of the second segment of the diode 2, and the cross-sectional area of the second slot segment is larger than the cross-sectional area of the first segment of the diode 2 and smaller than the cross-sectional area of the second segment of the diode 2. In other words, the radius of the first slot segment is larger than the radius of the second segment of the diode 2, and the radius of the second slot segment is larger than the radius of the first segment of the diode 2 and smaller than the radius of the second segment of the diode 2.

Therefore, the diode 2 can only be inserted into the first placement groove 321 from top to bottom, and the diode 2 is prevented from falling out of the first placement groove 321 due to its own weight due to the step formed at the junction of the second groove section and the first groove section, thereby further improving the stability of the diode 2 assembly.

In some embodiments, as shown in FIGS. 1 to 7 , there are two second fixing portions 33, and the two second fixing portions 33 are spaced apart along the second direction. The placement groove on the second fixing portion 33 is a second placement groove 331. The second fixing portion 33 includes a vertical section 332, a horizontal section 333, and a curved section 334. One end of the vertical section 332 is connected to the outer peripheral wall of the second connecting portion 31, and the other end of the vertical section 332 is connected to the end surface of the horizontal section 333 close to the vertical section 332. The curved section 334 is located on the side of the vertical section 332 away from the relay body 1, and one end of the curved section 334 away from the second connecting portion 31 is connected to the horizontal section 333. The vertical section 332, the horizontal section 333, and the curved section 334 together define the second placement groove 331.

Optionally, as shown in FIG. 2 , the second fixing portion 33 is disposed above the second connecting portion 31, the second placement groove 331 is located between the second fixing portion 33 and the second connecting portion 31, and the two second fixing portions 33 are spaced apart in the left-right direction so that the two There is a gap between the second fixing portions 33 .

Optionally, as shown in FIG7 , the lower end of the vertical section 332 is connected to the outer peripheral wall of the second connecting portion 31, the upper end of the vertical section 332 is connected to the lower end surface of the horizontal section 333, the curved section 334 is located at the front side of the vertical section 332, and the upper end of the curved section 334 is connected to the front end of the horizontal section 333. The vertical section 332, the horizontal section 333 and the curved section 334 together define the second placement groove 331.

In some embodiments, as shown in FIG. 7 , the distance between one end of the curved section 334 close to the second connection portion 31 and the outer peripheral wall of the second connection portion 31 in the first direction is smaller than the minimum diameter of the diode 2 .

7 , the distance between the lower end of the curved section 334 and the upper wall of the second connecting portion 31 in the vertical direction is smaller than the diameter of the first section of the diode 2 , thereby preventing the diode 2 from escaping from the front side of the second placement groove 331 .

In summary, there are two ways to assemble the diode 2. As shown in FIG. 3, the diode 2 is assembled on the mounting member 3 in the up-down direction. As shown in FIG. 6, the diode 2 is assembled on the mounting member 3 in the left-right direction. In addition, no matter which assembly method is used, the wiring harness end plugs on the two diodes 2 are connected to the leftmost contact 13 and the rightmost contact 13. Therefore, the relay of the embodiment of the present disclosure can select a more reasonable assembly method of the diode 2 according to the wiring conditions of different control boxes.

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

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

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, an electrical connection, or communication with each other; 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.

In the present disclosure, unless otherwise expressly specified and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is The first feature being “below”, “below” or “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower than the second feature.

In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

A relay, comprising:

A relay body, the relay body comprising a first connecting portion;

a diode connected to a wiring harness of the relay body;

The mounting member includes a second connecting portion and a plurality of fixing portions, the first connecting portion cooperates with the second connecting portion to detachably mount the mounting member on the relay body, and the fixing portion is provided with a placement groove for mounting the diode.
The relay according to claim 1, wherein the second connecting portion is annular, the second connecting portion is sleeved on the outer peripheral side of the first connecting portion, and at least a portion of the outer peripheral wall of the first connecting portion abuts against at least a portion of the inner peripheral wall of the second connecting portion.
The relay according to claim 2, wherein the mounting member further comprises a sealing portion, the outer peripheral wall of the sealing portion is connected to the inner peripheral wall of the second connecting portion, the sealing portion is provided with a plurality of mounting holes, the plurality of mounting holes correspond one-to-one to the plurality of contacts on the relay body, and the contacts on the relay body pass through the corresponding mounting holes.
According to the relay according to any one of claims 1 to 3, the plurality of fixed parts can be divided into a first fixed part and a second fixed part according to the extension direction of the placement groove opened thereon, the placement groove on the first fixed part extends along the first direction, and the placement groove on the second fixed part extends along the second direction.
The relay according to claim 4, wherein the number of the first fixing parts is two, and the two first fixing parts are symmetrically arranged on both sides of the second connecting part in the second direction.
The relay according to claim 5, wherein the placement groove on the first fixing portion is a first placement groove, and the first placement groove is provided on an end surface of the first fixing portion close to the relay body;

The mounting member further includes two isolating portions, which correspond one to one with the two first fixing portions. The isolating portions are arranged on the outer peripheral wall of the second connecting portion, and the isolating portions are located on a side of the first fixing portion close to the relay body.
The relay according to claim 6, wherein a gap is provided between the isolating portion and the first fixing portion, and a distance of the gap in the third direction is smaller than a minimum diameter of the diode.
The relay according to claim 6 or 7, wherein the first placement slot comprises a first slot segment and a second slot segment that are connected, the cross-sectional area of the first slot segment is larger than the cross-sectional area of the second slot segment, and the cross-sectional area of the second slot segment is larger than the minimum cross-sectional area of the diode and smaller than the maximum cross-sectional area of the diode.
The relay according to claim 4, wherein the second fixing parts are two, and the two second fixing parts Distributed at intervals along the second direction, the placement grooves on the second fixing portion are second placement grooves;

The second fixing portion includes a vertical section, a horizontal section and a curved section, one end of the vertical section is connected to the outer peripheral wall of the second connecting portion, the other end of the vertical section is connected to the end surface of the horizontal section close to the vertical section, the curved section is located on a side of the vertical section away from the relay body, one end of the curved section away from the second connecting portion is connected to the horizontal section, and the vertical section, the horizontal section and the curved section jointly define the second placement groove.
The relay according to claim 9, wherein a distance in the first direction between an end of the bent section close to the second connecting portion and an outer peripheral wall of the second connecting portion is smaller than a minimum diameter of the diode.