Relay protection shell
By incorporating reinforcing elements within the latching channel of the relay protective housing and optimizing the design of the elastic latch, the problem of the latching elements deforming and dislodging is solved, thereby improving the relay's fixation and protection performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO SHILAM AUTO PARTS CO LTD
- Filing Date
- 2025-03-21
- Publication Date
- 2026-04-10
AI Technical Summary
Under abnormal conditions or after prolonged use, the fastening parts of the existing relay protective housing are prone to deformation and detachment, resulting in poor fixation and protection.
A reinforcing element is installed in the latching channel of the relay protective housing and attached to the inner wall to enhance the connection strength. Combined with the design of the elastic latch and latching arm, the latching stability and reliability are improved.
The pull-out force of the relay protective housing under abnormal conditions has been enhanced, reducing the possibility of the fasteners coming loose and improving the reliability of fixing and protection.
Smart Images
Figure CN224110214U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrical equipment technical field, in particular to a relay protection shell. BACKGROUND
[0002] The relay protection shell is mainly used for fixing and protecting the relay, and generally, the relay is placed in the cavity of the shell through the buckling effect of the buckling member on the shell, so as to realize the fixing and protection of the relay. However, the buckling member of the existing relay protection shell is prone to deformation and easy to come off under abnormal conditions or after long-term use, thereby leading to buckling failure and affecting the fixing and protection effect of the relay. SUMMARY
[0003] Therefore, it is necessary to provide a relay protection shell with large pulling-out force and less prone to deformation.
[0004] To solve the above technical problems, the present application provides the following technical scheme:
[0005] A relay protection shell, comprising:
[0006] a first shell;
[0007] a second shell capable of surrounding with the first shell to form a cavity for accommodating the relay;
[0008] a first buckling member comprising an elastic clamping tongue, the elastic clamping tongue being installed on the first shell, and the elastic clamping tongue being capable of deforming in the height direction of the relay protection shell in response to the extrusion force;
[0009] a second buckling member installed on the second shell, and the second buckling member and the outer wall of the second shell surrounding the cavity form a buckling channel, the elastic clamping tongue being capable of being inserted and limited in the buckling channel for buckling connection between the second shell and the first shell;
[0010] a reinforcing member located at one end of the buckling channel away from the first shell, and along the height direction of the relay protection shell, both ends of the reinforcing member being attached to the inner wall of the buckling channel.
[0011] It can be understood that the application increases the connecting strength between the second buckling member and the second shell by arranging the reinforcing member in the buckling channel and attaching the reinforcing member to the inner wall of the buckling channel at both ends of the relay protection shell in the height direction, so that the second buckling member is not easy to be damaged and cause buckling failure under vibration during the transportation of the relay protection shell, and meanwhile, the structural strength of the buckling channel itself is increased and is not easy to be deformed, so that the possibility of the elastic clavus being pulled out of the buckling channel under abnormal conditions is reduced, that is, the pull-out force of the relay protection shell under abnormal conditions is increased, thereby improving the reliability of the relay protection shell.
[0012] In one of the embodiments, the reinforcing member is arranged in plurality, and the plurality of reinforcing members are arranged at intervals in the width direction of the relay protection shell.
[0013] It can be understood that arranging the plurality of reinforcing members can further increase the connecting strength between the second buckling member and the second shell and the structural strength of the buckling channel itself, so as to avoid the buckling failure of the first buckling member and the second buckling member under abnormal conditions.
[0014] In one of the embodiments, each of the reinforcing members comprises a main body and a reinforcing arm, the main body is connected to one end of the buckling channel away from the first shell and can abut against the first buckling member in the length direction of the relay protection shell, and the reinforcing arm is arranged at one end of the main body in the height direction of the relay protection shell and extends along the length direction of the relay protection shell and is attached to the inner wall of the buckling channel.
[0015] It can be understood that the main body arranged can avoid the excessive movement of the elastic clavus when inserted into the buckling channel to cause damage to the first buckling member, and abut against the elastic clavus in the length direction of the relay protection shell to limit the first shell in this direction; the reinforcing arm connected to the main body and attached to the inner wall of the buckling channel can support the buckling channel in the height direction of the relay protection shell, so that the buckling channel is not easy to be deformed in this direction to cause the elastic clavus to be pulled out and affect the buckling effect.
[0016] In one of the embodiments, the reinforcing arm is arranged in two, and the two reinforcing arms are arranged on the inner walls on both sides of the buckling channel in the height direction.
[0017] It can be understood that arranging the reinforcing arm in two can further increase the supporting force of the reinforcing member to the buckling channel in the height direction of the relay protection shell, so as to avoid the phenomenon that the elastic clavus is pulled out due to the deformation of the buckling channel.
[0018] In one of the embodiments, the reinforcing arm is arranged in increasing order from the height close to the first buckling member to the height away from the first buckling member.
[0019] It can be understood that the height of the reinforcing arm is set to form a large inclined surface pressure on the buckling channel in the height direction of the relay protection shell, thereby increasing the buckling force between the first buckling member and the second buckling member.
[0020] In one of the embodiments, the elastic clamping tongue is provided with a buckling groove at one end of the second buckling member in the length direction of the relay protection shell; and in the height direction of the relay protection shell, the buckling channel is provided with a buckling arm in the height direction of the relay protection shell.
[0021] When the first buckling member and the second buckling member are buckled and connected, part of the buckling arm is located in the buckling groove.
[0022] In one of the embodiments, the buckling groove divides the elastic clamping tongue into a first clamping tongue part and a second clamping tongue part, and the first clamping tongue part and the second clamping tongue part can be elastically deformed in the width direction of the relay protection shell.
[0023] It can be understood that the elastic deformation of the first clamping tongue part and the second clamping tongue part in the width direction of the relay protection shell when buckling can reduce the buckling force between the first buckling member and the second buckling member, and after the buckling is completed, the first clamping tongue part and the second clamping tongue part rebound and can form a relative abutting force on the buckling arm, thereby improving the reliability of the buckling arm abutting the elastic clamping tongue and further improving the stability of buckling.
[0024] In one of the embodiments, in the width direction of the relay protection shell, a protrusion is arranged on the side wall of the elastic clamping tongue, and a limiting groove corresponding to the protrusion is arranged on the buckling arm, and when the first buckling member and the second buckling member are buckled and connected, the protrusion is limited in the limiting groove.
[0025] It can be understood that the protrusion can be limited in the limiting groove in the width direction of the relay protection shell to increase the buckling strength of the first buckling member and the second buckling member in this direction and further reduce the possibility of buckling failure caused by the disengagement of the two under abnormal conditions.
[0026] In one of the embodiments, the protrusion is arranged on one side of the first clamping tongue part facing the second clamping tongue part; and / or the protrusion is arranged on one side of the second clamping tongue part facing the first clamping tongue part.
[0027] The limiting groove is arranged on the side wall of the buckling arm in the width direction of the relay, and the limiting groove and the protrusion are arranged one by one.
[0028] In one of the embodiments, the first fastening member further comprises a main body part, a portion of the main body part is attached to the first shell in the length direction of the relay protection shell; and when the first fastening member is fastened with the second fastening member, the main body part is capable of abutting against the main body in the length direction of the relay protection shell.
[0029] Compared with the prior art, the relay protection shell increases the connecting strength between the second fastening member and the second shell by arranging the reinforcing member in the fastening channel and attaching the reinforcing member to the inner wall of the fastening channel at both ends in the height direction of the relay protection shell, so that the second fastening member is not easy to be damaged due to vibration during transportation of the relay protection shell and thus lead to fastening failure, and at the same time, the reinforcing member can also strengthen the structure of the fastening channel so as to reduce the possibility of the elastic clamping tongue being pulled out of the fastening channel under abnormal conditions, i.e., increase the pull-out force of the relay protection shell under abnormal conditions, thereby improving the reliability of the relay protection shell. BRIEF DESCRIPTION OF DRAWINGS
[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0031] Figure 1 The structural schematic diagram of the fastening state of the relay protection shell provided by the present application.
[0032] Figure 2 The exploded structural schematic diagram of the relay protection shell provided by the present application.
[0033] Figure 3 The structural schematic diagram of one side of the relay protection shell provided by the present application.
[0034] Figure 4 The structural schematic diagram of the side of the reinforcing member provided by the present application.
[0035] Figure 5 The structural schematic diagram of the first shell and the first fastening member provided by the present application.
[0036] Figure 6 The structural schematic diagram of the second shell and the second fastening member provided by the present application.
[0037] Figure 7 The structural schematic diagram of the Figure 5 The enlarged structural schematic diagram of A in the above figure.
[0038] Figure 8 The application provides a relay protection shell Figure 6 An enlarged structural schematic view of B in the application.
[0039] Figure 9 Another perspective structural schematic view of the relay protection shell in the application.
[0040] The element reference numbers are as follows:
[0041] 100, relay protection shell; 10, first shell; 20, second shell; 30, cavity; 40, first fastening member; 41, elastic clamping tongue; 411, fastening groove; 412, first clamping tongue part; 413, second clamping tongue part; 414, protruding part; 42, main body member; 421, abutting surface; 422, guide inclined surface; 50, second fastening member; 51, fastening channel; 511, fastening arm; 512, limiting groove; 52, reinforcing member; 521, main body; 522, reinforcing arm; 53, fixed clamping tongue. DETAILED DESCRIPTION
[0042] In order to make the above objectives, features and advantages of the application more apparent, specific embodiments of the application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the application can be practiced in a number of ways other than those specifically described herein, and the skilled person can make similar improvements without departing from the spirit of the application, so the application is not limited to the specific embodiments disclosed below.
[0043] It should be noted that when an assembly is referred to as being "fixed to" or "set to" another assembly, it can be directly on the other assembly or there can be a middle assembly. When an assembly is referred to as being "connected to" another assembly, it can be directly connected to the other assembly or there can be a middle assembly. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the application are for illustrative purposes only and do not indicate the only implementation.
[0044] In addition, the terms "first", "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0045] In the present application, unless specifically stated and limited otherwise, a first feature "on", "under", "above" or "over" a second feature can be directly in contact with the second feature or indirectly in contact with the second feature through an intermediate medium. Moreover, a first feature "above", "over" or "on" a second feature can be directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. A first feature "below", "under" or "underneath" a second feature can be directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.
[0046] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the associated listed items.
[0047] Please refer to Figure 1 As shown in the drawings, the present application provides a relay protection shell 100, which is mainly applied to electrical equipment such as a relay, so as to fix and protect the relay, avoid the relay from being affected by vibration during transportation, and thus avoid the relay from being damaged and unable to be normally used.
[0048] As Figures 2 to 9As shown, the relay protection shell 100 comprises a first shell 10, a second shell 20, a first fastening member 40, a second fastening member 50 and a reinforcing member 52, wherein the second shell 20 can surround the first shell 10 to form a cavity 30 for accommodating a relay; the first fastening member 40 comprises an elastic latching tongue 41, which is installed on the first shell 10 and can be deformed in the height direction z of the relay protection shell 100 in response to a pressing force; the second fastening member 50 is installed on the second shell 20 and forms a fastening channel 51 with the outer wall of the second shell 20 relative to the cavity 30, the elastic latching tongue 41 can be inserted into and limited in the fastening channel 51 for connecting the second shell 20 and the first shell 10; the reinforcing member 52 is located at one end of the fastening channel 51 away from the first shell 10, and the two ends of the reinforcing member 52 are attached to the inner wall of the fastening channel 51 along the height direction z of the relay protection shell 100. It needs to be explained that in abnormal conditions (such as vibration and bumping during transportation, etc.), the fastening member of the existing relay protection shell 100 with fastening state can be easily deformed to make the fastening channel 51 deform in the height direction of the relay protection shell 100, so that the fastening member comes out or the fastening member is damaged to cause the fastening failure, so that the relay cannot be protected or fixed. By setting the reinforcing member 52 in the fastening channel 51 and attaching the reinforcing member 52 at the two ends of the height direction z of the relay protection shell 100 to the inner wall of the fastening channel 51, the connection strength between the second fastening member 50 and the second shell 20 is increased, so that the second fastening member 50 is not easy to be damaged to cause the fastening failure under the vibration during the transportation of the relay protection shell 100, and the reinforcing member 52 can also enhance the structural strength of the fastening channel 51 itself to make it not easy to be deformed, so that the possibility of the elastic latching tongue 41 coming out of the fastening channel 51 under abnormal conditions is reduced, that is, the pull-out force of the relay protection shell 100 under abnormal conditions is increased, so that the reliability of the relay protection shell 100 is improved; at the same time, the elastic latching tongue 41 can be deformed in the height direction z of the relay protection shell 100 in response to the pressing force, so that the insertion force of the first fastening member 40 relative to the second fastening member 50 is reduced, so that they are easy to be fastened.
[0049] Please continue to refer to Figures 5 to 9 , the elastic latching tongue 41 is provided with a fastening groove 411 at one end of the length direction y of the relay protection shell 100 close to the second fastening member 50; and along the height direction z of the relay protection shell 100, the fastening channel 51 is provided with a fastening arm 511 in the height direction z of the relay protection shell; wherein when the first fastening member 40 and the second fastening member 50 are connected, part of the fastening arm 511 is located in the fastening groove 411.
[0050] Specifically, the buckling groove 411 divides the elastic clamping tongue 41 into a first clamping tongue part 412 and a second clamping tongue part 413, and the first clamping tongue part 412 and the second clamping tongue part 413 can elastically deform in the width direction x of the relay protection shell 100. In this way, the elastic clamping tongue 41 can be inserted into the buckling channel 51 without receiving a large resistance, i.e., the buckling force between the first buckling member 40 and the second buckling member 50 can be reduced, and after the buckling is completed, the first clamping tongue part 412 and the second clamping tongue part 413 spring back and can form a relative abutting force on the buckling arm 511, thereby improving the reliability of the buckling arm 511 abutting the elastic clamping tongue 41 and further improving the stability of the buckling.
[0051] Further, in the width direction x of the relay protection shell 100, a protrusion 414 is arranged on the side wall of the elastic clamping tongue 41, and a limiting groove 512 corresponding to the protrusion 414 is arranged in the buckling arm 511, and when the first buckling member 40 and the second buckling member 50 are buckled and connected, the protrusion 414 is limited in the limiting groove 512. In this way, the limiting groove 512 can limit the arranged protrusion 414 in the width direction x and the height direction z of the relay protection shell 100, so as to increase the buckling strength of the first buckling member 40 and the second buckling member 50 in the above-mentioned directions, i.e., to increase the pull-out force between them, thereby further reducing the possibility of buckling failure due to the disengagement of the two under abnormal conditions.
[0052] Here, the protrusion 414 is arranged on one side of the first clamping tongue part 412 facing the second clamping tongue part 413; and / or, the protrusion 414 is arranged on one side of the second clamping tongue part 413 facing the first clamping tongue part 412; the limiting groove 512 is arranged on the side wall of the buckling arm 511 in the relay width direction x, and the limiting groove 512 and the protrusion 414 are arranged one by one. In this embodiment, the first clamping tongue part 412 and the second clamping tongue part 413 are both provided with protrusions 414 at the positions opposite to each other, and the buckling arm 511 has two limiting grooves 512 at the positions opposite to the protrusions 414.
[0053] In an embodiment, the first buckling member 40 further comprises a main body member 42, part of the main body member 42 is arranged on the first shell 10 in the length direction y of the relay protection shell 100 and connected with the elastic clamping tongue 41, and when the first buckling member 40 and the second buckling member 50 are buckled and connected, the main body member 42 and the elastic clamping tongue 41 abut and limit the inner wall of the buckling channel 51 in the height direction z of the relay protection shell 100.
[0054] For example, the main body 42 has an abutting surface 421 and a guide inclined surface 422 on one side in the height direction z of the relay protection shell 100. The abutting surface 421 is arranged at a position away from the second fastening part 50 and is connected with the guide inclined surface 422. Here, the first fastening part 40 can be guided to be smoothly fastened with the second fastening part 50, so that the two can be easily fastened. Meanwhile, the first fastening part 40 can be prevented from being damaged by collision when entering the fastening channel 51.
[0055] In an embodiment, the main body 42 and the elastic latches 41 are integrally formed, so as to simplify the connection structure of the first fastening part 40, provide structural strength, and reduce the production cost of the relay protection shell 100.
[0056] Please continue to refer to Figures 4 to 9 The reinforcing parts 52 are arranged in plurality and are arranged at intervals in the width direction x of the relay protection shell 100. In this way, the connection strength between the second fastening part 50 and the second shell 20 and the structural strength of the fastening channel 51 itself can be further increased, so as to avoid the situation that the first fastening part 40 and the second fastening part 50 fail to be fastened under abnormal conditions.
[0057] Here, the reinforcing parts 52 can be arranged in two, three, or four, and the specific number of the reinforcing parts 52 can be determined according to actual conditions and is not limited here. In the embodiment, the reinforcing parts 52 are arranged in two, and the two reinforcing parts 52 are arranged at two inner side walls of the second fastening part 50 in the width direction x of the relay protection shell 100.
[0058] In an embodiment, each reinforcing part 52 includes a main body 521 and a reinforcing arm 522. The main body 521 is connected to one end of the fastening channel 51 away from the first shell 10 and can abut against the main body 42 in the length direction y of the relay protection shell 100. The reinforcing arm 522 is arranged at one end of the main body 521 in the height direction z of the relay protection shell 100 and extends along the length direction y of the relay protection shell 100 and is arranged on the inner wall of the fastening channel 51. The arranged main body 521 can prevent the elastic latches 41 from moving excessively when being inserted into the fastening channel 51 and causing the first fastening part 40 to be damaged. The main body 521 abuts against the elastic latches 41 in the length direction y of the relay protection shell 100, so that the first shell 10 is positioned in this direction. The arranged reinforcing arm 522 is connected to the main body 521 and is arranged on the inner wall of the fastening channel 51. The reinforcing arm 522 can support the fastening channel 51 in the height direction z of the relay protection shell 100, so that the fastening channel 51 is not easily deformed in this direction and causes the elastic latches 41 to be pulled out, which affects the fastening effect.
[0059] Further, the reinforcing arms 522 are arranged in two, and are arranged on the inner walls of the two sides of the buckle channel 51 in the height direction z, so that the reinforcing member 52 has sufficient support force on the second buckle member 50 in the height direction z of the relay, so as to further avoid the second buckle member 50 from deforming in this direction and increasing the space in the buckle channel 51, causing the first buckle member 40 to be pulled out.
[0060] Here, when the first buckle member 40 is connected with the second buckle member 50, the two reinforcing arms 522 can be in close contact with the main body member 42 and the elastic clamping tongue 41 respectively, so as to form a relative abutting limit in the height direction z of the relay protection shell 100, increase the pulling-out force of the first buckle member 40, and prevent it from being pulled out in an abnormal situation.
[0061] As preferred, please refer to Figure 4 The reinforcing arms 522 are arranged in increasing order from the height H close to the first buckle member 40 to the height H far from the first buckle member 40, and it can be understood that the height of the reinforcing arms 522 is arranged so as to form a larger inclined plane pressure on the buckle channel 51 in the height direction z of the relay protection shell 100, thereby increasing the buckling force between the first buckle member 40 and the second buckle member 50.
[0062] In an embodiment, the buckle channel 51 is provided with a fixed clamping tongue 53 on a wall surface opposite to the second shell 20, and when the first buckle member 40 is connected with the second buckle member 50, the fixed clamping tongue can abut against the elastic clamping tongue 41 and limit the elastic clamping tongue 41 in the length direction y of the relay protection shell 100, so as to further increase the buckling force between the first buckle member 40 and the second buckle member 50, and prevent it from being pulled out in an abnormal situation.
[0063] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of the technical features in the above-mentioned embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that they are within the scope of the present application.
[0064] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A relay protection housing, characterized in that, The relay protection shell comprises: a first shell (10); a second shell (20) capable of surrounding with the first shell (10) a cavity (30) for accommodating the relay; a first fastening member (40) comprising an elastic clamping tongue (41) mounted on the first shell (10) and capable of deforming in the height direction of the relay protection shell in response to extrusion force; a second fastening member (50) mounted on the second shell (20) and surrounding with the second shell (20) an outer wall relative to the cavity (30) to form a fastening channel (51), the elastic clamping tongue (41) being capable of being inserted into and limited in the fastening channel (51) for fastening connection of the second shell (20) with the first shell (10); a reinforcing member (52) located at one end of the fastening channel (51) away from the first shell (10) and adhering to the inner wall of the fastening channel (51) at both ends in the height direction of the relay protection shell.
2. The relay protection housing according to claim 1, characterized in that The reinforcing member (52) is provided in plurality, and the plurality of reinforcing members (52) are arranged at intervals in the width direction of the relay protection shell.
3. The relay protection housing according to claim 2, characterized in that Each reinforcing member (52) comprises a main body (521) connected to one end of the fastening channel (51) away from the first shell (10) and capable of abutting against the first fastening member (40) in the length direction of the relay protection shell, and a reinforcing arm (522) provided at one end of the main body (521) in the height direction of the relay protection shell and extending in the length direction of the relay protection shell and adhering to the inner wall of the fastening channel (51).
4. The relay protection housing according to claim 3, characterized in that The reinforcing arm (522) is provided in two, and the two reinforcing arms (522) are respectively provided on the inner walls on both sides of the fastening channel (51) in the height direction.
5. The relay protection housing of claim 3, wherein, The reinforcing arm (522) is provided in sequence from close to far from the height of the first fastening member (40).
6. The relay protection housing of claim 1, wherein, The elastic clamping tongue (41) is provided with a fastening groove (411) at one end close to the second fastening member (50) in the length direction of the relay protection shell, and a fastening arm (511) is provided in the fastening channel (51) in the height direction of the relay protection shell in the height direction of the relay protection shell. When the first fastening member (40) and the second fastening member (50) are fastened and connected, part of the fastening arm (511) is located in the fastening groove (411).
7. The relay protection housing according to claim 6, characterized in that The fastening groove (411) divides the elastic clamping tongue (41) into a first clamping tongue part (412) and a second clamping tongue part (413), and the first clamping tongue part (412) and the second clamping tongue part (413) are capable of elastically deforming in the width direction of the relay protection shell.
8. The relay protection housing according to claim 7, characterized in that The side wall of the elastic clamping tongue (41) is provided with a protrusion (414) in the width direction of the relay protection shell, the buckle arm (511) is provided with a limiting groove (512) corresponding to the protrusion (414), and when the first buckle (40) is buckled and connected with the second buckle (50), the protrusion (414) is limited in the limiting groove (512).
9. The relay protection housing of claim 8, wherein, The protrusion (414) is arranged on one side of the first clamping tongue portion (412) facing the second clamping tongue portion (413); and / or the protrusion (414) is arranged on one side of the second clamping tongue portion (413) facing the first clamping tongue portion (412). The limiting groove (512) is arranged on the side wall of the buckle arm (511) in the width direction of the relay, and the limiting groove (512) and the protrusion (414) are arranged one by one.
10. The relay protection housing of claim 3, wherein, The first buckle (40) further comprises a main body (42), part of the main body (42) is attached to the first shell (10) in the length direction of the relay protection shell; and when the first buckle (40) is buckled and connected with the second buckle (50), the main body (42) can abut and limit the main body (521) in the length direction of the relay protection shell.