Enclosure, relay, and method for sealing enclosure

Abstract

Disclosed in the present disclosure are an enclosure, a relay, and a method for sealing the enclosure. The enclosure comprises a shell and a first cover, wherein the shell is provided with an accommodating cavity therein and a first opening, which is in communication with the accommodating cavity and is formed in a first direction; and the first cover is fixedly connected to the shell and cooperates with the shell to form a sealing cavity, which is suitable for accommodating a first sealing member or a part of the first sealing member, and the first cover shields the sealing cavity in the first direction. The relay uses the enclosure and comprises the first sealing member which is at least partially accommodated in the sealing cavity. The method for sealing the enclosure is used for sealing an enclosure provided with a first slot. The above technical solution, compared with the prior art, has better technical waterproof effects on fit clearances between various parts of the enclosure, or provides a material basis for obtaining a good waterproof effect.

Description

Housings, relays and methods for sealing housings

[0001] This disclosure claims priority to Chinese patent applications filed on May 28, 2024, with application numbers 202410672097.4, 202410672116.3, and 202421187663.4, and Chinese patent application filed on July 1, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of housing, and more specifically to a housing, a relay, and a method for sealing the housing. Background Technology

[0003] In existing technology, a relay generally includes a relay body, a housing, signal terminals, and load terminals. The relay body includes a magnetic circuit and a contact portion. The magnetic circuit includes a coil assembly and an armature assembly. The contact portion includes a moving contact and a stationary contact. The coil assembly receives a control signal and, based on the control signal, changes the magnetic field to drive the armature assembly to rotate or move linearly, thereby moving the moving contact to close or open with the stationary contact. The housing houses the relay body. The signal terminals are electrically connected to the coil assembly and extend out of the housing to connect to an external control signal circuit. The load terminals are electrically connected to the contact portion and extend out of the housing to connect to an external load circuit. In existing technology, the housing is generally composed of several parts, which are often fastened together by fasteners. The clearances between these parts need to be waterproof. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the aforementioned defects or problems in the prior art and to provide a housing, a relay, and a method for sealing the housing, which, compared with the prior art, provides better waterproofing of the fitting gaps between the various parts of the housing or provides a material basis for achieving better waterproofing.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] The first technical solution relates to a housing, which includes a housing and a first cover. The housing has a cavity and a first opening that communicates with the cavity and is opened in a first direction. The first cover is fixed to the housing and cooperates with the housing to form a sealed cavity. The sealed cavity is adapted to accommodate a first sealing element or a portion of the first sealing element. The first cover covers the sealed cavity in the first direction.

[0007] The second technical solution is based on the first technical solution, wherein the shell is provided with a first wall, the first opening is formed in the first wall, and the first cover is inserted into the first wall.

[0008] The third technical solution is based on the first technical solution, wherein the outer shell is provided with a first injection port, and the sealing material is adapted to be injected into the sealing cavity through the first injection port. The sealing material has fluidity and is suitable for solidification.

[0009] The fourth technical solution is based on the third technical solution, wherein the sealing material is suitable for being injected into the sealing cavity through the first injection port along the second direction; the sealing cavity is provided with vertical segments extending along the second direction on both sides along the third direction; the number of the first injection ports is two and they correspond to the vertical segments, and the first injection ports are close to or at least partially coincide with the corresponding vertical segments along the third direction; the first direction, the second direction and the third direction are perpendicular to each other.

[0010] The fifth technical solution is based on the third technical solution, wherein the shell is provided with a first wall, the first opening is formed on the first wall, the first wall is provided with a first outer wall opposite to the cavity, a first groove is formed between the first cover and the first outer wall, the first groove is suitable for injecting sealing material, and the sealing material is fluid and suitable for solidification.

[0011] The sixth technical solution is based on the third technical solution, wherein the sealing material is adapted to be injected into the sealing cavity through the first injection port along a second direction perpendicular to the first direction; the housing is provided with a first wall, the first opening is formed in the first wall, the first wall is provided with a first outer wall away from the cavity, a first groove is formed between the first cover and the first outer wall, the first groove is provided with a first groove opening, and the sealing material is adapted to be injected into the first groove from the first groove opening away from the second direction; the two ends of the first groove extend to both sides of the first cover along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] The seventh technical solution is based on the sixth technical solution, wherein the two ends of the first groove are provided with stop surfaces on both sides of the first cover along the third direction, and the sealing cavity extends at least partially beyond the location of the stop surfaces along the second direction.

[0013] The eighth technical solution is based on the sixth technical solution, wherein the first cover is inserted into the first wall along the second direction, and the first wall is provided with a first side wall for forming the first opening; the first cover is provided with a body, a first flange and a second flange, the first flange and the second flange both protrude from the outer edge of the body and are arranged along the first direction, a slot is formed between the first flange and the second flange to engage with the first wall, the slot is provided with a bottom wall, a first side wall formed on the first flange and a second side wall formed on the second flange; the first groove is formed between the first side wall and the first outer wall, and the bottom wall, the second side wall and the first side wall enclose the sealing cavity.

[0014] The ninth technical solution is based on the third or fourth technical solution, and it further includes a second cover. The housing has a second opening along a second direction. The second cover is fixed to the housing and covers the second opening. A second groove is formed between the second cover, the housing, and the first cover. The second groove is suitable for injecting sealing material and is connected to the first injection port.

[0015] The tenth technical solution is based on any one of the fifth to eighth technical solutions, and further includes a second cover. The housing has a second opening along a second direction. The second cover is fixed to the housing and covers the second opening. A second groove is formed between the second cover, the housing, and the first cover. The second groove is suitable for injecting sealing material and is connected to the first injection port.

[0016] The eleventh technical solution relates to a relay, which includes a relay body, a signal terminal, a first seal, and a housing as described in the first or second technical solution. The relay body includes a coil assembly. The housing accommodates the relay body. The signal terminal is electrically connected to the coil assembly and extends through the first cover out of the housing. The first seal is accommodated in the sealing cavity. The first seal is a pre-formed solid seal or is formed by the solidification of a sealing material injected into the sealing cavity.

[0017] The twelfth technical solution relates to a relay, which includes a first seal and a housing as described in the ninth technical solution, wherein the first seal is accommodated in a sealing cavity and a second groove, and the first seal is formed by solidification of a sealing material injected into the sealing cavity and the second groove.

[0018] The thirteenth technical solution relates to a relay, which includes a first seal, a second seal, and a housing as described in the tenth technical solution. The first seal is housed in a sealing cavity and a second groove. The first seal is formed by solidifying a sealing material injected into the sealing cavity and the second groove. The second seal is housed in the first groove. The second seal is formed by solidifying a sealing material injected into the first groove.

[0019] The fourteenth technical solution is based on the twelfth or thirteenth technical solution, and further includes a relay body, a signal terminal, and a load terminal; the relay body is housed in a cavity and includes a magnetic circuit portion and a contact portion, the magnetic circuit portion including a coil assembly; the signal terminal is electrically connected to the coil assembly and extends through the first cover to the outer shell; the load terminal is electrically connected to the contact portion, the load terminal is fixed relative to the outer shell and extends out of the outer shell; the second cover and the outer shell cooperate to form a through hole along a second direction, the second groove is arranged around and adjacent to the through hole, the load terminal has a first arm and a second arm that are integrally connected to each other, the first arm extends through the through hole to the outer shell, the second arm covers part of the second groove, the second arm has a second injection port, the second injection port is adapted to inject sealing material into the part of the second groove covered by the second arm along the second direction.

[0020] The fifteenth technical solution relates to a method for sealing a housing, which is used to seal a housing as described in any of the sixth to eighth technical solutions, comprising: step 1: injecting a sealing material into a sealing cavity from a first injection port along a second direction and allowing the sealing material to solidify; step 2: flipping the intermediate obtained in the previous step; step 3: injecting the sealing material into a first groove from a first slot opening away from the second direction until it flows to a stop surface and the sealing material solidifies; the order of the steps is that step 1 precedes step 2 and step 2 precedes step 3, or step 3 precedes step 2 and step 2 precedes step 1.

[0021] Compared with existing technologies, the above solution has the following beneficial effects:

[0022] In the first technical solution, a sealing cavity suitable for accommodating at least a portion of the first sealing element is formed by the first cover and the shell, thereby providing a material basis for achieving a better waterproof effect for the fitting gaps between the various parts of the shell. Here, the first sealing element can be a pre-formed, solid, elastic sealing element installed in the sealing cavity, or it can be a solid, elastic sealing element formed by the solidification of liquid sealing material injected into the sealing cavity.

[0023] In the first technical solution, since the first cover shields the sealing cavity along a first direction, the sealing cavity is not visible along the first direction in which the first opening is located. Therefore, the first sealing element, which is adapted to be housed in the sealing cavity, is also not visible along the direction of the first opening. Thus, when the user uses other functions attached to the first cover, it is less likely to scratch the first sealing element, thereby providing a material basis for the seal to be less prone to failure due to damage. Furthermore, when the first cover is in front and needs to be exposed to light for extended periods, since the first sealing element is not visible along the direction of the first opening, it is less likely to discolor due to light exposure, thus affecting its appearance.

[0024] In the second technical solution, the first cover is inserted into the first wall, making the installation of the first cover into the housing more efficient.

[0025] In the third technical solution, a seal is formed by injecting sealing material into the sealing cavity from the first injection port. Compared with sealing by accommodating a solid sealing element in the sealing cavity, the filling effect of the sealing cavity is better and the sealing effect is also better.

[0026] In the fourth technical solution, the first injection port is close to the vertical segment of the corresponding sealing cavity along the third direction or at least partially coincides with the corresponding vertical segment along the third direction, making it easier for the sealing material to be injected into the sealing cavity, which is beneficial to providing a material basis for achieving a better sealing effect between the first cover and the shell.

[0027] In the fifth technical solution, a first groove suitable for injecting sealing material is formed between the first cover and the first outer wall, providing a material basis for further improving the waterproof effect between the first cover and the shell. At the same time, since the first groove is located between the first cover and the first outer wall, the first groove is not exposed to the shell along the first direction, thus providing a material basis for the seal to be less likely to fail due to damage.

[0028] In the sixth technical solution, the sealing material is suitable for being injected into the sealing cavity along the second direction, and the sealing material is also suitable for being injected into the first groove away from the second direction, and the two ends of the first groove extend to both sides of the first cover along the third direction. By injecting the sealing material twice and in reverse, the risk of sealing failure can be effectively reduced, providing a material basis for further improving the waterproof effect between the shell and the first cover.

[0029] In the seventh technical solution, by setting a stop surface, the sealing material flowing to both sides of the first cover will not continue to flow to the lower sides of the first cover, thus avoiding the sealing material flowing to the lower sides of the first cover affecting the aesthetics. The sealing cavity at least partially extends beyond the location of the stop surface in the second direction, ensuring that the sealing cavity intersects with the first groove in the second direction, thereby providing a material basis for further ensuring the sealing effect.

[0030] In the eighth technical solution, the first cover is inserted into the first wall along the second direction, making the installation of the first cover into the housing more efficient. Furthermore, the insertion and mating of the first cover and the first wall allows the gap between them to be more tortuous in the cross-section perpendicular to the insertion direction, which helps improve the sealing effect. The bottom wall of the slot, the second side wall of the slot, and the first side wall of the first wall enclose a sealing cavity. Therefore, the sealing cavity is located in a relatively rear position of the slot, further away from the first flange, and is completely shielded along the first direction. The first groove is formed between the first side wall of the slot and the first outer wall, so that the first groove and the sealing cavity are arranged back and forth along the first direction, providing a material basis for achieving a better waterproof effect between the first cover and the housing.

[0031] In addition to possessing the technical effects of the referenced technical solutions, the ninth and tenth technical solutions, by providing a second opening and a second cover, make it easier to insert and secure the relay body into the housing. The second groove used to seal the second cover and the housing communicates with the sealing cavity, allowing the sealing material injected into the second groove to come into contact with the sealing material injected into the sealing cavity, thereby achieving a better sealing effect on the housing.

[0032] The relays in the eleventh to fourteenth technical solutions, based on the technical effects of the claims they reference, further possess correspondingly better waterproofing effects.

[0033] In the fourteenth technical solution, the second groove is arranged around and adjacent to the through hole formed by the cooperation of the housing and the second cover. The load terminal extends out of the housing from the through hole, thus enabling the housing, the second cover, and the load terminal to effectively seal around the load terminal. When the second arm of the load terminal covers the part of the second groove, a second injection port is provided on the second arm to make it easier for the sealing material to flow to the covered part of the second groove, ensuring the sealing effect of the second groove.

[0034] In the fifteenth technical solution, by flipping the intermediate obtained in the previous step in step 2, it is ensured that after the sealing material injected into the sealing cavity along the second direction solidifies, it can be injected into the first groove and flow to the stop surface in the opposite direction to the second direction, or vice versa. Therefore, based on the technical effects of the sixth to eighth technical solutions, it further has a correspondingly better waterproof effect. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0036] Figure 1 is a perspective view of the relay in Embodiment 1 of this disclosure;

[0037] Figure 2 is a three-dimensional sectional view of Figure 1;

[0038] Figure 3 is a perspective view of the outer shell in Embodiment 1 of this disclosure;

[0039] Figure 4 is a top view of Figure 1;

[0040] Figure 5 is a perspective view of the first cover in Embodiment 1;

[0041] Figure 6 is a bottom view of the first cover in Embodiment 1;

[0042] Figure 7 is a perspective view of the second cover in Embodiment 1;

[0043] Figure 8 is a perspective view of the load terminals in Embodiment 1;

[0044] Figure 9 is a top view of the relay before the housing is sealed in Embodiment 1;

[0045] Figure 10 is a front view of the relay before the housing is sealed in Embodiment 1;

[0046] Figure 11 is a cross-sectional view along line AA in Figure 9;

[0047] Figure 12 is a magnified view of part D in Figure 11;

[0048] Figure 13 is a cross-sectional view along line BB in Figure 9;

[0049] Figure 14 is a cross-sectional view along line CC in Figure 10;

[0050] Figure 15 is an enlarged view of part E in Figure 14;

[0051] Figure 16 is a front view of the relay in Embodiment 2 of this disclosure;

[0052] Figure 17 is a cross-sectional view along line FF in Figure 16;

[0053] Figure 18 is a cross-sectional view along line GG in Figure 16.

[0054] Figure 19 is a perspective view of the relay in Embodiment 4;

[0055] Figure 20 is a three-dimensional sectional view of the relay in Embodiment 4;

[0056] Figure 21 is a perspective view of the shell in Embodiment 4;

[0057] Figure 22 is a perspective view of the connector in Embodiment 4;

[0058] Figure 23 is a top view of the outer casing in Embodiment 4;

[0059] Figure 24 is a left view of the outer casing in Embodiment 4;

[0060] Figure 25 is a front view of the relay in Embodiment 5;

[0061] Figure 26 is a cross-sectional view along the HH direction of Figure 25;

[0062] Figure 27 is a cross-sectional view along direction II of Figure 25;

[0063] Figure 28 is a front view of the relay in Embodiment Six;

[0064] Figure 29 is a cross-sectional view along the JJ direction of Figure 28;

[0065] Figure 30 is a cross-sectional view along the KK direction of Figure 28.

[0066] Figure 31 is a perspective view of the relay in Embodiment 7;

[0067] Figure 32 is a perspective view of the relay after the top cover is removed in Embodiment 7;

[0068] Figure 33 is an exploded perspective view of the connector and the suppression element in Embodiment 7;

[0069] Figure 34 is a perspective view of the connector substrate in Embodiment 7;

[0070] Figure 35 is a schematic diagram of the fit between the first connecting part and the through hole in Embodiment 7;

[0071] Figure 36 is a schematic diagram of the mating structure between the third connecting part and the terminal slot in Embodiment 7;

[0072] Figure 37 is a perspective view of the third signal terminal in Embodiment 7;

[0073] Figure 38 is a side view of the first signal terminal in Embodiment 7;

[0074] Figure 39 is a perspective view of the bottom shell in Example 7;

[0075] Figure 40 is a schematic diagram of the mating structure between the bottom shell and the connector in Embodiment 7;

[0076] Figure 41 is a perspective view of the connector and the suppression element in Embodiment 7;

[0077] Figure 42 is an exploded perspective view of the connector and the suppression element in Embodiment 8;

[0078] Figure 43 is a perspective view of the connector and the suppression element in Embodiment 8;

[0079] Figure 44 is a perspective view of the relay after the top cover is removed in Example 9.

[0080] Figure 45 is a perspective view of the electrical connection structure in Embodiment 10;

[0081] Figure 46 is an exploded perspective view of the electrical connection structure in Example 10;

[0082] Figure 47 is a perspective view of the substrate in Example 10;

[0083] Figure 48 is a schematic diagram of the interference fit between the slot and the protrusion in Embodiment 10;

[0084] Figure 49 is a schematic diagram of the fit between the recessed portion and the protruding portion in Embodiment 10;

[0085] Figure 50 is a perspective view of the third connecting terminal in Embodiment 10;

[0086] Figure 51 is a side view of the first connecting terminal in Embodiment 10;

[0087] Figure 52 is a perspective view of the third connecting terminal in Embodiment Eleven;

[0088] Figure 53 is a schematic diagram of the fit between the recessed portion and the protruding portion in Example 11.

[0089] Key reference numerals: 1a, Relay; 2a, Sealing housing; 3a, Relay body; 4a, Load terminal; 5a, Signal terminal; 6a, Housing; 7a, First seal; 8a, Second seal; 9a, Housing; 10a, First cover; 11a, Second cover; 12a, First wall; 13a, First opening; 14a, Second opening; 15a, First chamfer; 16a, Support surface; 17a, Retaining wall; 18a, Body; 19a, First flange; 20a, Second flange; 21a, Slot; 22a, Slot bottom wall; 23a, Second chamfer; 24a, Blocking surface; 25a, Stop surface; 2 6a, Cover; 27a, Protrusion; 28a, Edge; 29a, First Inlet; 30a, First Arm; 31a, Second Arm; 32a, Second Inlet; 33a, Sealing Cavity; 34a, Vertical Section; 35a, Horizontal Section; 36a, First Groove; 37a, First Groove Opening; 38a, Through Hole; 39a, Third Seal; 40a, Solid Seal; 50a, First Side Wall; 60a, First Outer Wall; X, Third Direction; Y, First Direction; Z, Second Direction. 1b, Relay; 2b, Housing; 3b, Relay Body; 4b, Signal Terminal; 5b, Load Terminal; 6b, First Seal; 7b, Second Seal; 8b, First Sealing Ring; 21b, Housing; 22b, Connector; 23b, Cover; 211b, First Wall; 212b, First Opening; 213b, Second Opening; 214b, Support Surface; 215b, Retaining Wall; 221b, Body; 222b, First Flange; 223b, Second Flange; 224b, Slot; 25b, First Sealing Groove; 26b, Second Sealing Groove; 27b, Third Sealing Groove; 31b, Coil Assembly; X, Third Direction; Y, First Direction; Z, Second Direction.1c, Relay; 2c, Housing; 3c, Load Terminal; 4c, Connector; 5c, Housing; 6c, Bottom Housing; 7c, Top Cover; 8c, Relay Body; 9c, Magnetic Circuit Part; 9'c, Contact Part; 10c, Armature Assembly; 11c, Coil Assembly; 12c, Coil Terminal; 13c, Suppression Element; 14c, Body; 15c, Lead Wire; 16c, Base; 17c, Signal Terminal; 17ac, First Signal Terminal; 17bc, Second Signal Terminal; 17cc, Third Signal Terminal; 18c, Shield; 19c, Shielding Part; 20c, Terminal Slot; 21c, Component Slot; 22c, First Slot Section; 23c, Second Slot Section; 24c 25c, third groove section; 26c, through hole; 27c, recessed part; 28c, body groove; 29c, lead wire groove; 30c, main body; 31c, first connecting part; 32c, protrusion; 33c, first arm; 34c, second arm; 35c, first part; 36c, second part; 37c, third connecting part; 38c, slot; 39c, insertion port; 40c, holding section; 41c, inlet; 42c, protrusion; 43c, limiting part; Z, second direction; Y, first direction; X, third direction. 1d, Electrical connection structure; 2d, Component; 3d, Body; 4d, Lead wire; 5d, Base; 6d, Connecting terminal; 6ad, First connecting terminal; 6bd, Second connecting terminal; 6cd, Third connecting terminal; 7d, Component slot; 8d, Connecting slot; 9d, Body slot; 10d, Lead wire slot; 11d, First slot segment; 12d, Second slot segment; 13d, Third slot segment; 14d, Slot; 15d, Recess; 16d, Connecting part; 17d, First connecting end; 18d, Second connecting end; 19d, First arm; 20d, Second arm; 21d, Protrusion; 22d, Third arm; 23d, Protrusion; 24d, Slot; 24ad, Side wall; 25d, Opening; 26d, Holding section; 27d, Inlet; Y, First direction; X, Third direction; Z, Second direction. Detailed Implementation

[0090] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0091] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0092] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.

[0093] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”

[0094] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0095] Unless otherwise specified in the claims and description, the term "sealing cavity adapted to accommodate the first seal" means that the sealing cavity can completely accommodate the first seal, wherein the first seal is a pre-formed solid elastic seal or a solid elastic seal formed by injecting a fluid and solidifying sealing material into the sealing cavity and then solidifying it.

[0096] Unless otherwise specified in the claims and description, the term "the portion of the sealing cavity adapted to accommodate the first seal" means the portion of the sealing cavity capable of accommodating the first seal, wherein the first seal specifically refers to a solid elastic seal formed by the solidification of a fluid and solidifying sealing material injected into the sealing cavity.

[0097] Unless otherwise specified in the claims and description, the term "first cover shields the sealing cavity along the first direction" means that after the first cover is fixed to the housing, the gap (including the sealing cavity) formed by the cooperation between the first cover and the housing is not visible along the first direction.

[0098] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0099] Example 1

[0100] Referring to Figures 1 and 2, which illustrate the relay 1a in this embodiment, the relay 1a includes a sealing housing 2a, a relay body 3a, a load terminal 4a, and a signal terminal 5a. In this embodiment, the sealing housing 2a includes a housing 6a, a first seal 7a, and a second seal 8a. In this embodiment, the housing 6a includes a shell 9a, a first cover 10a, and a second cover 11a.

[0101] Referring to Figures 3 and 4, which illustrate the housing 9a in this embodiment, as shown in Figure 3, the housing 9a has a cavity formed by a bottom wall and several side walls. One of the side walls is a first wall 12, which is perpendicular to a first direction Y, where Y is the front-to-back direction. A first opening 13a is provided on the first wall 12 along the first direction Y. The first wall 12a has a first side wall 50a for forming the first opening 13a and a first outer wall 60a facing away from the cavity. The housing 9a also has a second opening 14a along a second direction Z, located at the upper part of the housing 9a. In this embodiment, the first opening 13a and the second opening 14a are connected. As shown in Figure 4, the first side wall 50a has a first chamfer 15a located in the rear half of the first side wall 50a. As shown in Figures 3 and 4, each side wall of the shell 9a is provided with a support surface 16a, and a retaining wall 17a is formed on the outer side of the support surface 16a. The upper surface of the retaining wall 17a is higher than the support surface 16a. Both the support surface 16a and the retaining wall 17a are formed on the side wall.

[0102] Referring to Figures 5 and 6, which illustrate the first cover 10a in this embodiment. As shown in Figure 2, the first cover 10a is used to mount the signal terminal 5a (see Figure 2) and to be fixed to the housing 9a to cover the first opening 13a (see Figure 1). As shown in Figure 5, in this embodiment, the first cover 10a includes a body 18a, a first flange 19a, and a second flange 20a. Both the first flange 19a and the second flange 20a protrude from the outer edge of the body 18a to both sides along a third direction X and downward along a second direction Z. The third direction X is the left-right direction, and the second direction Z is the top-down direction. The first flange 19a and the second flange 20a are arranged along a first direction Y, with the first flange 19a in front and the second flange 20a behind. A slot 21a is formed between the first flange 19a and the second flange 20a. The slot 21a is provided with a bottom wall 22a formed on the outer edge of the body 18a, a first side wall formed on the first flange 19a, and a second side wall formed on the second flange 20a.

[0103] As shown in Figure 6, in this embodiment, the first sidewall is provided with a second chamfer 23a. The lower section of the second chamfer 23a extends along the third direction X, and the second chamfer 23a also extends upward away from the second direction Z to both sides of the first flange 19a to form side sections. In this embodiment, a blocking surface 24a is provided between the lower section and the side sections of the second chamfer 23a. The blocking surfaces 24a on both sides are arranged opposite to each other and are perpendicular to the third direction X. In this embodiment, the stop end of the side section of the second chamfer 23a is provided with a stop surface 25a, which faces away from the second direction Z.

[0104] Referring to Figure 7, which shows the second cover 11a in this embodiment. As shown in Figure 7, the second cover 11a is used to fix to the housing 9a and cover the second opening 14a (see Figure 3). As shown in Figure 7, the second cover 11a has a cover body 26a, a protrusion 27a is formed in the center of the cover body 26a, and an edge 28a is formed on the outer side of the protrusion 27a. The edge 28a is part of the cover body 26a and surrounds the protrusion 27a. In this embodiment, the cover body 26a also has a notch on at least one side, which is used to form a through hole 38a. In this embodiment, the edge 28a of the second cover 11a along the front side (near the first cover 10a) in the first direction Y also has two first injection ports 29a, which are arranged along the third direction X.

[0105] As shown in Figure 2, the relay body 3a is used to implement the relay function. In this embodiment, the relay body 3a includes a magnetic circuit part and a contact part. The magnetic circuit part includes a coil assembly and an armature assembly, and the contact part includes a moving contact and a stationary contact. The coil assembly receives a control signal and changes the magnetic field based on the control signal to drive the armature assembly to move the moving contact to close or open with the stationary contact. In this embodiment, the relay body 3a is placed in the cavity of the housing 9a through the second opening 14a. The coil assembly and the stationary contact are fixedly connected to the housing 9a, while the armature assembly and the moving contact move relative to the housing 9a.

[0106] Referring to Figure 8, which shows the load terminal 4a in this embodiment, the load terminal 4a is adapted to be electrically connected to the contact portion. As shown in Figure 8, the load terminal 4a has a first arm 30a and a second arm 31a that are integrally connected to each other. The first arm 30a extends away from the second direction Z, and the second arm 31a extends along the first direction Y. The second arm 31a has a second injection port 32a, the specific function of which will be described later.

[0107] As shown in Figure 2, the signal terminal 5a is adapted to be electrically connected to the coil assembly for receiving control signals. In this embodiment, the signal terminal 5a is mounted on the first cover 10a, extending through the first cover 10a along the first direction Y and protruding from the front surface of the first cover 10a. Specifically, in this embodiment, the first connecting terminal 5a is interference-fitted with the first cover 10a. In other embodiments, the first connecting terminal 5a can also be integrally molded with the first cover 10a by insert injection molding, or sealed with the first cover 10a by other sealing elements.

[0108] Referring to Figures 9 to 15, these figures show the unsealed state of the relay 1a in this embodiment. As shown in Figure 9, in this embodiment, the relay body 3a is first placed into the cavity of the housing 9a, and the load terminal 4a is electrically connected to the contact portion and fixed relative to the housing 9a. Then, the first cover 10a is inserted into the first wall 12a along the second direction Z. When the first cover 10a and the first wall 12a are inserted and engaged, the load terminal 5a and the coil assembly are also inserted and engaged, establishing an electrical connection. As shown in Figure 12, in this embodiment, the slot 21a is inserted and engaged with the first wall 12a, the first flange 19a is located on the front side of the first wall 12a along the first direction Y, and the second flange 20a is located on the rear side of the first wall 12a along the first direction Y. After being inserted into place, the bottom wall 22a, the second side wall, and the first side wall 50a of the slot 21a enclose a sealed cavity 33a. As shown in Figures 14 and 15, the sealed cavity 33a has two vertical sections 34a. Both vertical segments 34a are formed at the location of the first chamfer 15a.

[0109] As shown in Figure 12, the sealing cavity 33a also has a horizontal section 35a, which is located away from the second opening 14a along the second direction Z. The horizontal section 35a is also formed at the location of the first chamfer 15a. The horizontal section 35a communicates with the two vertical sections 34a.

[0110] As shown in Figures 12 and 15, a first groove 36a is formed between the first flange 19a and the first outer wall 60a. Specifically, the first groove 36a is formed by the second chamfer 23a and the outer surface of the first wall 12a. Like the second chamfer 23a, the first groove 36a has a lower section and a side end that communicate with each other. The lower section of the first groove 36a has a first opening 37a, which faces the same direction as the second direction Z, suitable for injecting sealing material into the first groove 36a away from the second direction Z. Finally, the second cover 11a is placed on the housing 9a, supported by the support surface 16a. At this time, as shown in Figure 11, a second groove 39a is formed between the protrusion 7a, the edge 28a, and the retaining wall 17a. The second groove 39a communicates with the two first injection ports 29a. The second groove 39a is suitable for injecting sealing material along the second direction Z.

[0111] As shown in Figure 9, the two first injection ports 29a are respectively close to or at least partially coincide with the corresponding vertical segment 34a along the third direction X. In this embodiment, the first injection ports 29a partially coincide with the corresponding vertical segment 34a. The first injection ports 29a are adapted to inject sealing material into the vertical segment 34a along the second direction Z.

[0112] As shown in Figure 13, a through hole 38a is formed between the notch on the second cover 11a and the first cover 10a. A second groove 39a surrounds and is adjacent to the through hole 38a. The first arm 30a of the second connecting terminal 4a extends out of the outer casing 6a through the through hole 38a away from the second direction Z. The second arm 31a covers part of the second groove 39a, and the second injection port 32a on the second arm 31a is directly opposite the covered part of the second groove 39a.

[0113] In this embodiment, the operation of sealing the outer casing 6a is performed according to the following steps:

[0114] Step 1: The sealing material is injected from the first injection port 29a into the vertical section 34a of the sealing cavity 33a along the second direction Z, and then the sealing material is injected into the second groove 39a along the second direction Z. The part of the second groove 39a covered by the second arm 31a is injected through the second injection port 32a. The sealing material injected into the sealing cavity 33a and the sealing material injected into the second groove 39a solidify to form the first sealing element 7a.

[0115] Step two, flip the intermediate obtained in the previous step; and

[0116] Step 3: Away from the second direction Z, inject the sealing material into the first groove 36a from the first groove opening 37a until the sealing material flows to the stop surface 25a, and allow the sealing material injected into the first groove 36a to solidify into the second seal 8a.

[0117] In step three, as the sealing material flows from the lower section of the first groove 36a to the side section, it is blocked by the blocking surface 24a. Only a portion of the sealing material is able to flow to the stop surface 25a, thus ensuring the seal of the lower section of the first groove 36a.

[0118] In some other embodiments, particularly when the second opening 14a and the second cover 11a are not provided, the order of steps one and three can be interchanged. That is, the order of the steps can be step 1 before step 2 and step 2 before step 3, or step 3 before step 2 and step 2 before step 1.

[0119] The sealing material is fluid and suitable for solidification. In this embodiment, the sealing material is polyethylene resin.

[0120] After the above three steps, the sealing of the housing 6a is completed and the relay 1a is formed as shown in Figures 1 and 2.

[0121] In this embodiment, the first cover 10a and the shell 9a cooperate to form a sealing cavity 33a suitable for accommodating at least part of the first sealing member 7a, thereby helping to achieve a better waterproof effect between the various parts of the shell 6a.

[0122] In this embodiment, since the first cover 10a shields the sealing cavity 33a along the first direction Y, the sealing cavity 33a is not visible along the first direction in which the first opening 13a is opened. Therefore, the first sealing element 7a, which is adapted to be accommodated in the sealing cavity 33a, is also not visible along the direction in which the first opening 13a is opened. Therefore, when the user uses other functions attached to the first cover 10a, it is less likely to scratch the first sealing element 7a, thus helping to prevent the seal from being damaged and causing failure. Furthermore, when the first cover 10a is located in front and needs to be exposed to light for a long time, since the first sealing element 7a is not visible in the direction in which the first opening 13a is opened, the first sealing element 7a is less likely to discolor due to light exposure, thus affecting its appearance.

[0123] In this embodiment, the first cover 10a is inserted into the first wall 12a, which makes the first cover 10a more efficient in being installed into the housing 9a.

[0124] In this embodiment, a seal is formed by injecting sealing material into the sealing cavity 33a from the first injection port 29a. Compared with the alternative method of accommodating a solid seal in the sealing cavity 33a, the sealing cavity 33a has a better filling effect and a better sealing effect.

[0125] In this embodiment, the first injection port 29a is close to the vertical segment 34a of the corresponding sealing cavity 33a along the third direction X, or at least partially coincides with the corresponding vertical segment 34a along the third direction X, so that the sealing material is easier to inject into the sealing cavity 33a, which is beneficial to achieving a better sealing effect between the first cover 10a and the shell 9a.

[0126] In this embodiment, a first groove 36a suitable for injecting sealing material is formed between the first cover 10a and the first outer wall 60a, providing a material basis for further improving the waterproof effect between the first cover 10a and the shell 9a. Simultaneously, since the first groove 36a is located between the first cover 10a and the first outer wall 60a, it is not exposed to the shell 6a along the first direction Y, thus providing a material basis for ensuring that the seal is not easily damaged and fails.

[0127] In this embodiment, the sealing material is suitable for being injected into the sealing cavity 33a along the second direction Z. The sealing material is also suitable for being injected into the first groove 36a away from the second direction Z. The two ends of the first groove 36a extend to both sides of the first cover 10a along the third direction X. By injecting the sealing material twice and in reverse, the risk of sealing failure can be effectively reduced, providing a material basis for further improving the waterproof effect between the shell 9a and the first cover 10a.

[0128] In this embodiment, by providing a stop surface 25a, the sealing material flowing to both sides of the first cover 10a will not continue to flow to the lower sides of the first cover 10a, thus avoiding the sealing material flowing to the lower sides of the first cover 10a and affecting the aesthetics. The sealing cavity 33a extends at least partially beyond the location of the stop surface 25a along the second direction Z, ensuring that the sealing cavity 33a intersects with the first groove 36a in the second direction Z, thereby providing a material basis for further ensuring the sealing effect.

[0129] In this embodiment, the first cover 10a and the first wall 12a are interlocked, which makes the gap between them more tortuous in the cross-section perpendicular to the interlocking direction, thus improving the sealing effect. The bottom wall 22a of the slot 21a, the second side wall, and the first side wall 50a of the first wall 12a enclose a sealing cavity 33a. Therefore, the sealing cavity 33a is located in the slot 21a at a relatively rearward position, far from the first flange 19a, and is completely covered along the first direction Y. The first groove 36a is formed between the first side wall and the first outer wall 60a, so that the first groove 36a and the sealing cavity 33a are arranged back and forth along the first direction Y, providing a material basis for achieving a better waterproof effect between the first cover 10a and the shell 9a.

[0130] In this embodiment, by providing a second opening 14a and a second cover 11a, it is easier to insert and fix the relay body 3a into the housing 9a. The second groove 39a used to seal the second cover 11a and the housing 9a is connected to the sealing cavity 33a, so that the sealing material injected into the second groove 39a and the sealing material injected into the sealing cavity 33a are in contact with each other, thereby achieving a better sealing effect on the outer shell 6a.

[0131] In this embodiment, by accommodating the first sealing element 7a in the sealing cavity 33a and the second groove 39a, and accommodating the second sealing element 8a in the first groove 36a, a better sealing and waterproofing effect than the prior art is achieved.

[0132] In this embodiment, the second groove 39a is provided around and adjacent to the through hole 38a formed by the cooperation of the housing 9a and the second cover 11a. The load terminal 4a extends out of the housing 6a from the through hole 38a. Therefore, the housing 9a, the second cover 11a and the load terminal 4a can be effectively sealed around the load terminal 4a. When the second arm 31a of the load terminal 4a covers part of the second groove 39a, a second injection port 32a is provided on the second arm 31a, which makes it easier for the sealing material to flow to the covered part of the second groove 39a, ensuring the sealing effect of the second groove 39a.

[0133] In this embodiment, by flipping the intermediate obtained in the previous step in step 2, it is ensured that after the sealing material injected into the sealing cavity 33a along the second direction Z solidifies, it can be injected into the first groove 36a and flow to the stop surface 25a in the opposite direction to the second direction Z, or vice versa. Therefore, when an air column is formed in the sealing cavity 33a, the sealing of the gap between the first cover 10a and the shell 9a can be strengthened by injecting the sealing material in the opposite direction.

[0134] Example 2

[0135] Referring to Figures 16 to 18, which illustrate the device 1a in this embodiment, the relay 1a includes a sealing housing, a relay body 3a, a load terminal 4a, and a signal terminal 5a. The sealing housing includes a housing 6a, a third seal 39a, and a solid seal 40a. The housing 6a includes a shell 9a, a first cover 10a, and a second cover 11a. The shell 9a has a first opening 13a along a first direction Y and a second opening 14a along a second direction Z. In this embodiment, the first opening 13a and the second opening 14a are not connected. The first cover 10a is adapted to mount the signal terminal 5a and is inserted into the shell 9a along the first direction Y to cover the first opening 13a. The outer periphery of the first cover 10a is provided with a sealing groove for accommodating the solid seal 42a. When the first cover 10a is inserted into the housing 9a, the sealing groove of the first cover 10a and the housing 9a cooperate to form a sealing cavity. The solid seal 42a is accommodated in the sealing cavity and presses against the housing 9a and the first cover 10a to achieve a seal between the housing 9a and the first cover 10a. In this embodiment, the first cover 10a has a first flange that covers the first opening 13a, making the solid seal 42a invisible along the first direction Y. In this embodiment, the signal terminal 5a is electrically connected to the coil assembly of the relay body 3a. The signal terminal 5a passes through the first cover 10a and is integrally molded with the first cover 10a insert. The load terminal 4a is electrically connected to the contact portion of the relay body 3a. The load terminal 4a passes through the second cover 11a and is interference-fitted with the second cover 11a. In this embodiment, after the relay body 3a is placed into the housing 9a, the first cover 10a is inserted into the housing 9a along the first direction Y and covers the first opening 13a. The signal terminal 5a and the coil assembly are simultaneously electrically connected. The second cover 11a is placed on the housing 9a and covers the second opening 14a. The load terminal 4a is simultaneously electrically connected to the contact portion. A second groove is also formed between the second cover 11a and the housing 9a. The second groove is suitable for injecting sealing material along the second direction Z. After the sealing material injected into the second groove solidifies, it forms a third seal 39a.

[0136] In this embodiment, the solid seal 42a is housed in the sealing cavity 33a, and the sealing cavity 33a is not visible along the first direction Y due to the shielding of the first flange. Therefore, the solid seal 42a is not easily damaged by scratches and thus does not fail.

[0137] In existing technology, relays generally include a housing, a relay body, signal terminals, and load terminals. The housing houses the relay body, which includes a magnetic circuit and a contact portion. The magnetic circuit includes a coil assembly and an armature assembly. The contact portion includes a moving contact and a stationary contact. The coil assembly receives a control signal and, based on the control signal, changes the magnetic field to drive the armature assembly to rotate or move linearly, thereby moving the moving contact to close or open with the stationary contact. The signal terminals are electrically connected to the coil assembly and extend out of the housing for electrical connection to an external control signal circuit. The load terminals are electrically connected to the contact portion and extend out of the housing for electrical connection to an external load circuit. Existing housings typically consist of several components, which are often fastened together by fasteners. The clearances between these components need to be waterproof.

[0138] This disclosure also provides a relay in which the fitting gaps between the components of its housing are waterproof.

[0139] Therefore, the present disclosure adopts the following technical solution:

[0140] The first technical solution relates to a relay, which includes a housing and a first seal. The housing includes a casing and a connector. The casing has a first wall, and the first wall has a first opening along a first direction. The connector is fixed to the casing and covers the first opening. The connector and the casing cooperate to form a first sealing groove. The first sealing groove is at least partially formed by the outer wall of the first wall and the connector. The connector shields the first sealing groove along the first direction. The first seal is located in the first sealing groove to seal the mating gap between the casing and the connector.

[0141] The second technical solution is based on the first technical solution, wherein the first sealing groove is arranged around the connector.

[0142] The third technical solution is based on the second technical solution, wherein the first sealing element is a sealing ring placed in the first sealing groove.

[0143] The fourth technical solution is based on the second technical solution, wherein the first sealing element is formed by the solidification of sealing material injected into the first sealing groove.

[0144] The fifth technical solution is based on the fourth technical solution, wherein the connector includes a body and a first flange, the first flange protruding from the body perpendicular to a first direction, and the first sealing groove is formed between the outer wall of the first wall and the first flange.

[0145] The sixth technical solution is based on the fifth technical solution, wherein the connector further includes a second flange, the second flange protruding from the body perpendicular to the first direction, the first flange and the second flange are arranged along the first direction, a slot is formed between the first flange and the second flange, and the slot is engaged with the first wall.

[0146] The seventh technical solution is based on any one of the first to third technical solutions, and further includes a second sealing element. The outer shell also includes a cover. The outer shell has a second opening along a second direction perpendicular to the first direction. The cover is placed over the second opening. A second sealing groove is formed between the cover and the outer shell. The second sealing element is formed by solidifying the sealing material injected into the second sealing groove.

[0147] The eighth technical solution is based on any one of the fourth to sixth technical solutions, and further includes a second sealing element. The housing also includes a cover. The housing has a second opening along a second direction perpendicular to the first direction. The cover is placed over the second opening. A second sealing groove is formed between the cover and the housing. The second sealing element is formed by solidifying the sealing material injected into the second sealing groove.

[0148] The ninth technical solution is based on the eighth technical solution, wherein the second sealing groove is connected to the first sealing groove, and the second sealing element is integrated with the first sealing element.

[0149] The tenth technical solution is based on the first technical solution, and it further includes a relay body, a signal terminal and a load terminal. The relay body is housed in a housing and includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil assembly. The signal terminal is electrically connected to the coil assembly and extends out of the housing through the connector in a first direction. The load terminal is electrically connected to the contact portion and is fixed relative to the housing and extends out of the housing.

[0150] Compared with existing technologies, the above solution has the following beneficial effects:

[0151] In the first technical solution, the first seal is located in the first sealing groove formed by the connector and the housing, thus sealing the gap between the housing and the connector and providing waterproofing. The connector cover is located at the first opening and shields the first sealing groove along the first direction. Therefore, when the user uses the functions on the front of the connector (e.g., plugging the control terminal into the signal terminal or unplugging the control terminal from the signal terminal), the first seal is less likely to be scratched. Furthermore, when the connector is located at the front and needs to be exposed to light for extended periods, the first seal is not visible in the opening direction of the first opening, thus preventing discoloration and affecting its appearance.

[0152] In the fourth technical solution, the first sealing groove is at least partially formed by the outer wall of the first wall and the connector, so the first sealing groove is at least partially exposed outside the housing, allowing the sealing material to be injected into the first sealing groove. The first sealing groove surrounds the connector, allowing the sealing material to flow within the first sealing groove and surround the connector. After the sealing material solidifies, it forms a first seal, resulting in better waterproofing.

[0153] In the fifth technical solution, the first sealing groove is formed between the outer wall of the first wall and the first flange. Therefore, the first sealing groove is exposed to the outer shell. The sealing material can be selected by injecting it into the first sealing groove in two directions that are opposite to each other, and the two injected sealing materials are connected to each other to form the first sealing element, which can ensure the waterproof effect of the first sealing element.

[0154] In the sixth technical solution, the slot and the first wall mate, which is a specific implementation method for fixing the connector to the housing. Because the connector is inserted into the housing, the connector assembly efficiency is higher. Furthermore, the mating of the connector with the first wall makes the gap between the connector and the housing more tortuous, which helps to improve the sealing effect.

[0155] In the seventh and eighth technical solutions, by setting a second opening and a cover, it is easier to insert the relay body into the housing.

[0156] In the ninth technical solution, the second sealing groove is connected to the first sealing groove, and the second sealing element is integrated with the first sealing element. Therefore, all mating gaps between the various components of the outer shell can be sealed as a whole, resulting in better waterproof performance.

[0157] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0158] Example 4

[0159] Referring to Figures 19 and 20, which illustrate the relay 1b in this embodiment, the relay 1b includes a housing 2b, a relay body 3b, a signal terminal 4b, a load terminal 5b, a first seal 6b, and a second seal 7b.

[0160] As shown in Figure 19, the outer casing 2b includes a housing 21b, a connector 22b, and a cover 23b.

[0161] Referring to Figure 21, which shows the housing 21b, the housing 21b has a cavity formed by a bottom wall and several side walls. One of the side walls is a first wall 211b, which is perpendicular to a first direction Y, where Y is the front-to-back direction. A first opening 212b is provided on the first wall 211b along the first direction Y. The housing 21b also has a second opening 213b along a second direction Z, which is perpendicular to the first direction Y. The second opening 213b is located at the upper part of the housing 21b. In this embodiment, the first opening 212b and the second opening 213b are connected. Each side wall of the housing 21b has a support surface 214b, and a retaining wall 215b is formed on the outer side of the support surface 214b. The upper surface of the retaining wall 215b is higher than the support surface 214b.

[0162] Referring to Figure 22, which illustrates connector 22b, connector 22b includes a body 221b, a first flange 222b, and a second flange 223b. The first flange 222b and the second flange 223b protrude from the body 221b perpendicularly to a first direction Y. The first flange 222b and the second flange 223b are arranged along the first direction Y, with the first flange 222b in front and the second flange 223b behind. The first flange 222b has an inclined surface facing the second flange 223b. A slot 224b is formed between the first flange 222b and the second flange 223b. The slot 224b is adapted to mate with a slot in the first wall 211b.

[0163] Referring to Figure 23, which shows the cover 23b, the cover 23b is sheet-shaped.

[0164] Referring to Figures 23 and 24, which show the housing 2b, the connector 22b is inserted into the first wall 211b along the second direction Z, causing the slot 224b to engage with the first wall 211b and securing the connector 22b to the housing 21b, covering the first opening 212b. After the connector 22b is inserted, a first sealing groove 25b is formed between the outer wall of the first wall 211b and the first flange 222b, surrounding the connector 22b. In this embodiment, the first sealing groove 25b is formed by the engagement of the inclined surface of the first flange 222b toward the second flange 223b and the outer wall of the first wall 211b. The connector 22b covers the first sealing groove 25b along the first direction. The cover 23b covers the second opening 213b and is supported by the support surface 214b. A second sealing groove 26b is formed between the cover 23b and the retaining wall 215b, and the second sealing groove 26b surrounds the cover 23b. In this embodiment, the second sealing groove 26b communicates with the first sealing groove 25b.

[0165] Referring to Figure 20, which illustrates the relay body 3b in this embodiment, the relay body 3b is housed within a housing 21b. The relay body 3b includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil assembly 31b and an armature assembly. The contact portion includes a moving contact and a stationary contact. The coil assembly 31b receives a control signal and, based on the control signal, changes the magnetic field to drive the armature assembly to rotate or move linearly, thereby causing the moving contact to move and close or open with the stationary contact.

[0166] Referring to Figure 20, which shows the signal terminal 4b in this embodiment. As shown in Figure 20, the signal terminal 4b is electrically connected to the coil assembly 31b and extends out of the housing 2b through the connector 22b in the first direction Y.

[0167] Referring to Figure 19, which shows the load terminal 5b in this embodiment, the load terminal 5b is electrically connected to the contact portion. As shown in Figure 19, the load terminal 5b is fixed relative to the housing 2b and extends out of the housing 2b.

[0168] Referring to Figure 19, which illustrates the first seal 6b and the second seal 7b in this embodiment. In this embodiment, the first seal 6b is formed by the solidification of sealing material injected into the first sealing groove 25b. The first seal is used to seal the mating gap between the housing 21b and the connector 22b. In this embodiment, the sealing material is fluid and suitable for solidification. Specifically, the sealing material can be a polymer material such as epoxy resin. The second seal 7b is formed by the solidification of sealing material injected into the second seal 26b. The second seal 7b is used to seal the mating gap between the housing 21b and the cover 23b. Since the first sealing groove 25b and the second sealing groove 26b are connected, in this embodiment, the first seal 6b and the second seal 7b are integrated.

[0169] The assembly steps of relay 1b in this embodiment are as follows: First, the relay body 3b and load terminal 5b are installed on the housing 21b, and the load terminal 5b is electrically connected to the contact portion; next, the signal terminal 4b is connected to the connector 22b, so that the signal terminal 4b passes through the connector 22b along the first direction X; then, the connector 22b is inserted into the first wall 211b along the second direction Z, so that the slot 224b is engaged with the first wall 221b, and the signal terminal 4b is electrically connected to the coil assembly 31b; finally, the cover 23b is placed over the second opening 213b. The support surface 214b supports the cover 23b along the second direction Z; then, sealing material is injected into the upward slot of the first sealing groove 25b and the second sealing groove 26b along the second direction Z, and the sealing material injected into the first sealing groove 25b flows to both sides along the third direction X; then, after the sealing material solidifies, the intermediate body is flipped 180 degrees, and the sealing material is injected into the downward slot of the first sealing groove 25b, and the sealing material injected into the first sealing groove 25b flows to both sides along the third direction X and connects with the previously injected sealing material, thereby completing the assembly of the relay 1b.

[0170] In this embodiment, the first seal 6b is located in the first sealing groove 25b formed by the connector 22b and the housing 21b, thus sealing the mating gap between the housing 21b and the connector 22b, providing a waterproof function between them. The connector 22b covers the first opening 212b and shields the first sealing groove 25b along the first direction Y. Therefore, when using the functions on the front of the connector 22b (e.g., inserting the control terminal into the signal terminal 5b or removing the control terminal from the signal terminal 5b), the user is less likely to scratch the first seal 6b. Furthermore, when the connector 22b is located in front and needs to be exposed to light for extended periods, the first seal 6b is not visible due to the opening direction of the first opening 212b, thus preventing discoloration and affecting its appearance.

[0171] In this embodiment, the first sealing groove 25b is formed between the outer wall of the first wall 211b and the first flange 222b. Therefore, the first sealing groove 25b is entirely exposed outside the outer shell 2b. Thus, sealing material can be injected into the first sealing groove 25b in two opposing directions. The first sealing groove 25b surrounds the connector 22b, allowing the sealing material to be injected into it from both directions. The two injections of sealing material then connect to form the first sealing element 6b. The solidification of the sealing material to form the first sealing element 6b ensures better waterproofing.

[0172] In this embodiment, the slot 224b and the first wall 211b are inserted into each other, which is a specific implementation of the connector 22b being fixed to the housing 31b. Since the connector 22b is inserted into the housing 21b, the assembly efficiency of the connector 22b is higher. Furthermore, the insertion and engagement of the connector 22b with the first wall 211b makes the gap between the connector 22b and the housing 21b more tortuous, which helps to improve the sealing effect.

[0173] In this embodiment, by providing a second opening 213b and a cover 23b, it is easier to insert the relay body 3b into the housing 21b.

[0174] In this embodiment, the second sealing groove 26b is connected to the first sealing groove 25b, and the second sealing element 7b is integrated with the first sealing element 6b. Therefore, all mating gaps between the components of the outer shell 2b can be sealed as a whole, resulting in better waterproof performance.

[0175] Example 5

[0176] See Figures 25 to 27. Figures 25 to 27 show the relay 1b in Embodiment 5. As shown in Figures 25 to 27, the relay 1b in this embodiment differs from that in Embodiment 4 in that the outer edge of the connector 22b body 221b is provided with a third sealing groove 27b, and the connector 22b no longer has a second flange 223b. The connector 22b is inserted into the first wall 211b along the first direction Y. The first sealing ring 8b is placed in the third sealing groove 27b. When the connector 22b is inserted into the first wall 211b, the first sealing ring 8b abuts against the side wall of the first wall 211b forming the first opening 212b. In this embodiment, the first sealing groove 25b and the second sealing groove 26b are not connected, so the first sealing member 6b and the second sealing member 7b are no longer connected as a whole. The electrical connection relationship of the relay body 3b, signal terminal 4b, and load terminal 5b in this embodiment is the same as that in Embodiment 4.

[0177] The relay 1b in Example 5 also has good waterproof performance.

[0178] Example 6

[0179] See Figures 28 to 30. Figures 28 to 30 show the relay 1b in Embodiment Six. As shown in Figures 28 to 30, the only difference between the relay 1b in this embodiment and that in Embodiment Five is that the first seal 6b is no longer formed by injecting sealing material into the first sealing groove 26b, but is instead a sealing ring placed in the first sealing groove 25b. When the connector 22b is inserted into the first wall 211b, the first seal 6b abuts against the outer wall of the first wall 211b along the first direction Y.

[0180] The relay 1b in Example 6 also has a certain degree of waterproofing.

[0181] In existing technology, a relay includes a housing, a relay body, signal terminals, and load terminals. The housing includes a casing and a connector fixedly connected to the casing. The relay body includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil assembly and an armature assembly. The contact portion includes a moving contact and a stationary contact. The signal terminals are electrically connected to the coil assembly and are used to connect to an external signal circuit to introduce control signals into the coil assembly. The load terminals are electrically connected to the contact portion and are used to connect to an external load circuit to control the on / off state of the load circuit. The relay body is housed within the housing. The signal terminals are generally fixedly connected to the connector, and the load terminals are generally fixedly connected to the casing. Both the signal terminals and the load terminals are exposed relative to the housing. Generally, the relay also needs to be equipped with a suppression element connected in parallel with the coil assembly to suppress the back electromotive force generated when the coil assembly is disconnected. The suppression element is generally a resistor or a diode. In practical applications, some customers want to integrate the suppression element inside the relay, while others purchase relays without integrated suppression elements and add the suppression element themselves in the signal circuit. To enable products to cope with both possibilities, existing technologies often include two or more connectors. The connectors are fixed to the coil frame that is fixed to the housing. One end of the connector is connected to the pin of the coil assembly, and the other end is connected to the lead of the suppression element, so that the coil assembly and the suppression element can be connected in parallel.

[0182] The applicant found that the existing technology of fixing two or more connectors to the coil frame often results in low development efficiency.

[0183] This disclosure also provides a connector, connection component, and relay that offer higher development efficiency compared to existing technologies.

[0184] Therefore, the present disclosure adopts the following technical solution:

[0185] The first technical solution relates to a connector adapted to be fixedly connected to a housing to form a shell, and for electrically connecting a coil assembly housed within the shell to a signal circuit, the coil assembly being adapted to be connected in parallel with a suppression element; the connector includes: a base adapted to be fixedly connected to the housing and having a shielding portion, the shielding portion not being exposed when the connector is fixedly connected to the housing to form a shell; and signal terminals, at least two in number, each signal terminal having a body and a first connecting portion, the body being mounted on the shielding portion and adapted to be electrically connected to the coil assembly and the suppression element, such that the suppression element is adapted to be connected in parallel with the coil assembly; the first connecting portion at least partially protruding from the shielding portion to be adapted to be electrically connected to the signal circuit.

[0186] The second technical solution is based on the first technical solution, wherein the main body is provided with a second connection part suitable for electrical connection with the coil assembly and a third connection part suitable for electrical connection with the suppression element.

[0187] The third technical solution is based on the second technical solution, wherein the third connecting part is provided with a slot, the slot is provided with an insertion port, and the lead of the suppressing element is adapted to be inserted into the slot through the insertion port.

[0188] The fourth technical solution is based on the third technical solution, wherein the insertion port tapers along the insertion direction of the lead wire to guide the lead wire into the slot.

[0189] The fifth technical solution is based on the fourth technical solution, wherein the slot is provided with a holding section for holding the lead wire therein, the holding section is provided with an inlet for the lead wire to enter the holding section, and the opening distance of the inlet is smaller than the inner diameter of the holding section.

[0190] The sixth technical solution is based on the second technical solution, wherein the shielding part is provided with terminal slots for the signal terminals to be inserted along the first direction, the number of terminal slots being the same as and corresponding to the number of signal terminals; the first connecting part extends outward from the shielding part along the first direction.

[0191] The seventh technical solution is based on the sixth technical solution, wherein the substrate is provided with a shielding wall, the inner surface of the shielding wall forms the shielding portion, the first direction is perpendicular to the shielding wall, the shielding wall is provided with a through hole, the through hole communicates with the terminal slot and penetrates the shielding wall along the first direction to allow the first connecting portion to pass through; the first connecting portion is interference-fitted with the through hole.

[0192] The eighth technical solution is based on the sixth technical solution, wherein the main body is provided with a first arm and at least one second arm, the first arm extends along a second direction perpendicular to the first direction, the first connecting part extends out from the first arm along the first direction, the second connecting part extends out from the first arm along a third direction perpendicular to the first and second directions, the second arm extends out from the first arm away from the third direction, and the third connecting part is located on the second arm; the terminal slot is provided with a first slot segment and a second slot segment; the first slot segment is inserted into the first arm, and the second slot segment is inserted into the second arm.

[0193] The ninth technical solution is based on the eighth technical solution, wherein the connector is adapted to be inserted into the housing in a direction away from a third party, and the coil terminal of the coil assembly extending along the first direction is adapted to be inserted into the second connecting part in a direction away from a third party.

[0194] The tenth technical solution is based on the ninth technical solution, wherein the terminal slot is further provided with a third slot segment, the second connecting part is provided with a first part close to the first arm and a second part away from the first arm, the first part is inserted into the third slot segment, and the second part extends out of the third slot segment in a third direction to be inserted into the coil terminal.

[0195] The eleventh technical solution is based on the eighth technical solution, wherein the number of signal terminals is three, each signal terminal is arranged along the second direction, the number of second arms of the two signal terminals located on both sides along the second direction is one and both are provided with a third connecting part, the number of second arms of the signal terminal located in the middle along the second direction is two and both are provided with a third connecting part, and the third connecting parts of two adjacent signal terminals are used to connect a suppression element.

[0196] The twelfth technical solution is based on any one of the sixth to eleventh technical solutions, wherein the third connecting part is provided with a slot, the slot is provided with an insertion port, the insertion port is opened away from the first direction, and the lead wire of the suppressing element is adapted to be inserted into the slot through the insertion port.

[0197] The thirteenth technical solution is based on any one of the eighth to eleventh technical solutions, wherein the shielding part is further provided with a component slot, the component slot is adapted to accommodate a suppression component, the component slot is provided with a body slot and two lead slots, the body slot is used to accommodate the body of the suppression component, the two lead slots are used to accommodate the two leads of the suppression component, the two lead slots are located on both sides of the body slot along the second direction and intersect with the corresponding terminal slots; when the signal terminal is inserted into the terminal slot, the third connecting part is adapted to abut against the lead supported by the bottom of the lead slot.

[0198] The fourteenth technical solution is based on the thirteenth technical solution, wherein the third connecting part is provided with a slot, the slot is provided with an insertion port, the insertion port is opened along a first direction, and when the signal terminal is inserted into the terminal slot, the bottom of the lead slot supports the lead wire so that the lead wire enters the slot through the insertion port.

[0199] The fifteenth technical solution is based on the fourteenth technical solution, wherein the second groove segment is provided with a recessed portion, the recessed portion forcing at least one side groove wall of the third connecting portion to deform so that the lead wire is clamped in the groove.

[0200] The sixteenth technical solution is based on the fifteenth technical solution, wherein the two side groove walls of the third connecting part are provided with protrusions at the insertion port position, and the walls of the recessed part gradually approach each other along the third direction. When the two protrusions are inserted into the recessed part, they are forced to approach each other so that the lead wire is clamped in the slot away from the insertion port position.

[0201] The seventeenth technical solution is based on the first technical solution, wherein the main body is provided with a second connecting part, the second connecting part is adapted to be electrically connected to the coil assembly and the suppression element; the shielding part is provided with a terminal slot for the signal terminal to be inserted along a first direction, the number of the terminal slots is the same as and corresponds to the number of signal terminals, and the first connecting part extends out of the shielding part along the first direction.

[0202] The eighteenth technical solution is based on the seventeenth technical solution, wherein the second connecting part extends along a third direction perpendicular to the first direction; the connector is adapted to be inserted into the housing away from the third direction, and the coil terminal of the coil assembly extending along the first direction is adapted to be inserted into the second connecting part away from the third direction; the lead of the suppression element is adapted to be inserted into the second connecting part.

[0203] The nineteenth technical solution is based on the eighteenth technical solution, wherein the terminal slot is provided with a third slot segment, the second connecting part is provided with a first part close to the first connecting part and a second part away from the first connecting part, the first part is inserted into the third slot segment, and the second part extends out of the third slot segment in a third direction to be inserted into the coil terminal; the lead of the suppression element is adapted to be inserted into the second part.

[0204] The twentieth technical solution relates to a connection assembly comprising a suppression element and a connector as described in any one of the first to eighteenth technical solutions, wherein the suppression element is fixedly and electrically connected to the body to adapt the suppression element to be connected in parallel with a coil assembly.

[0205] The twenty-first technical solution relates to a relay, which includes a relay body and a housing. The relay body includes a coil assembly fixedly connected to the housing. It also includes a connector as described in any one of the first to eighteenth technical solutions. The coil assembly is provided with coil terminals electrically connected to corresponding signal terminals. The connector is fixedly connected to the housing to form a shell, and the coil assembly is housed in the shell.

[0206] The twenty-second technical solution relates to a relay, which includes a relay body and a housing. The relay body includes a coil assembly fixedly connected to the housing. It also includes a connector as described in any one of the sixth to eighteenth technical solutions. The coil assembly is provided with a coil terminal electrically connected to a corresponding signal terminal. The connector is fixedly connected to the housing to form a shell. The coil assembly is housed in the shell. The shell is provided with a limiting part, which limits the movement of the signal terminal away from a first direction.

[0207] The twenty-third technical solution is based on the twenty-first or twenty-second technical solution, and it further includes a suppression element, which is fixedly connected to the main body and connected in parallel with the coil assembly.

[0208] The twenty-fourth technical solution is based on the twenty-first or twenty-second technical solutions, and further includes a load terminal; the relay body also includes an armature assembly and a contact portion, the coil assembly and the armature assembly together constitute a magnetic circuit portion, the contact portion includes a moving contact and a stationary contact, the stationary contact being fixed to the housing; the load terminal is electrically connected to the contact portion and fixed relative to the housing, the load terminal is exposed and electrically connected to the load circuit; the armature assembly is driven by the coil assembly and drives the moving contact to close or open with the stationary contact to control the on / off state of the load circuit.

[0209] Compared with existing technologies, the above solution has the following beneficial effects:

[0210] In its long-term experience serving clients, the applicant has observed that many customers desire customized connector structures to match their own designed signal circuits. This could include using custom-designed connection ports or adopting foolproof designs consistent with internal standards. Furthermore, the background section mentions that some customers want integrated suppression components within the relays, while others purchase relays without integrated suppression components and then add their own suppression components to the signal circuits. Addressing these two needs with existing solutions that use parallel suppression components on the coil frame fixed to the housing presents a dual development challenge: redesigning both the relay body and the connector itself. This lengthens the development cycle and may increase mold costs, leading to higher overall costs.

[0211] Based on the above observations and findings, the applicant proposed a first technical solution. In this first technical solution, by setting a main body and a first connecting part on the signal terminal, the applicant not only achieves the basic function of electrically connecting the coil assembly to the signal circuit, but also selectively enables the coil assembly to be connected in parallel with a suppression element. Therefore, when addressing two possible customer requirements for the suppression element, it is only necessary to select whether to connect or not connect the suppression element on the connector. When redesigning and developing to meet customer needs, since the design and development only need to be focused on the connector without redesigning and developing the housing and the relay body housed within the housing, the development cycle can be saved. Furthermore, since the mold investment cost is concentrated only on the connector, the cost of re-molding is greatly reduced, and the design and production of the housing and relay body can be standardized, improving production efficiency and reducing production costs.

[0212] When redesign and development to meet customer requirements are not necessary, incorporating a body on the connector suitable for connecting suppression elements can reduce production complexity and save on relay thickness dimensions compared to designing a connector suitable for fixing to the coil frame. This is because, firstly, the relay body structure within the housing is often much more complex than that of the connector. Adding functionality to a simpler connector makes manufacturing and assembly easier than adding functionality to a more complex relay body. Secondly, precisely because the relay body structure within the housing is often much more complex than that of the connector, connectors suitable for connecting suppression elements often need to consider not only the ease of assembling the suppression elements but also the space required for other devices, thus occupying more volume, especially in the thickness direction (third dimension). For connectors, however, only shielding and connecting functions are required. Since the body is mounted on the shielding part of the base, it fully utilizes the larger and readily available assembly space on the back of the base and allows connection of signal terminals in a first direction perpendicular to the third dimension. Meanwhile, setting up signal terminals suitable for connecting suppression elements is merely a further utilization of the electrical connection function of the signal terminals. Therefore, if the first technical solution is adopted, the relay space utilization rate is higher than that of the existing technology, especially the dimension in the thickness direction can be effectively reduced.

[0213] In the first technical solution, the main body is installed in the shielding part, so the outer shell is not exposed. The main body is suitable for electrical connection with the suppression element, so the outer shell can also protect the suppression element.

[0214] In the second technical solution, the main body is provided with a second connecting part suitable for electrical connection with the coil assembly and a third connecting part suitable for electrical connection with the suppression element. Therefore, the structure and shape of the main body can be set more flexibly, and it is also suitable for making full use of the space in all directions of the connector.

[0215] In the third technical solution, the third connecting part is provided with a slot, and the slot has an insertion port. The lead wire of the suppression element is suitable for insertion into the slot through the insertion port. The technical means adopted is to enable the suppression element to be plugged into and mated with the signal terminal. Compared with the optional method of connecting the suppression element to the third connecting part by soldering, the assembly is simpler and the production efficiency is higher.

[0216] In the fourth technical solution, the insertion port gradually narrows along the insertion direction. The technical means adopted is to guide the lead wire into the slot through the insertion port that opens away from the insertion direction, making it easier to insert the suppression element into the signal terminal.

[0217] In the fifth technical solution, the slot is provided with a retaining section, and the retaining section has an inlet. The opening distance of the inlet is smaller than the inner diameter of the retaining section. The technical means adopted is to make the lead wire of the suppression element deform when it passes through the inlet. This deformation is partly plastic deformation and partly elastic deformation. After the lead wire of the suppression element enters the retaining section, the elastic deformation part will recover, so that the suppression element cannot be removed from the retaining section unless subjected to strong external force. Therefore, after the suppression element enters the retaining section, it can reliably connect to the signal terminal under normal use.

[0218] In the sixth technical solution, the first connecting part extends outward from the shielding part along the first direction. Simultaneously, the shielding part is provided with a terminal slot suitable for the insertion of the signal terminal along the first direction. The technical means employed is to ensure that the insertion direction of the signal terminal is the same as the direction in which the first connecting part passes through. This has two implications: first, the main body is located in the shielding part of the base, fully utilizing the space on the back of the base; second, when the main body is inserted, the first connecting part also passes through the base and protrudes outward along the same direction. Firstly, compared to solutions where the signal terminal is fastened with fasteners or where the signal terminal is injection molded into the base insert, the signal terminal insertion method is easier to assemble and disassemble, with a simpler assembly process, thus improving assembly efficiency. Secondly, when the signal terminal is inserted, the first connecting part is also in place, allowing the signal terminal to establish an electrical connection with the external signal circuit simply by moving along the first direction. Therefore, it is also easy to assemble and improves assembly efficiency.

[0219] The seventh technical solution provides a specific implementation of the sixth technical solution, wherein the signal terminal is inserted into a shield perpendicular to the first direction, the main body is located on the inner surface of the shield, and the first connecting part passes through the shield through a through hole. Therefore, this solution makes full use of the inner surface of the shield, saving space.

[0220] In the seventh technical solution, the first connecting part is interference-fitted with the through hole, so that when the signal terminal is inserted into the position, it is fixed relative to the base. Therefore, during the process of fixing the base and the housing, the signal terminal is not easy to leave the proper position, thereby avoiding assembly failure or the need for other technical means to keep the signal terminal in the proper position.

[0221] In the eighth technical solution, the main body is provided with a first arm and a second arm. The first arm extends along the second direction, and the second arm extends along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. Therefore, the signal terminal forms a first L-shaped structure on a plane perpendicular to the first direction. The first connecting part extends from the first arm along the first direction, so that the main body and the first connecting part form a second L-shaped structure on a plane perpendicular to the second direction. In addition, the terminal slot is provided with a first slot section that engages with the first arm and a second slot section that engages with the second arm. This ensures that when the signal terminal is inserted into the terminal slot, it is reliably inserted and limited on a plane perpendicular to the first direction, and will not wobble in the second direction or the third direction.

[0222] In the eighth technical solution, relative to the first arm, the second arm extends away from the first arm in a third direction, and the third connecting part is located in the second arm. The second connecting part extends from the first arm in a third direction, so that the second connecting part and the third connecting part are arranged on both sides of the first arm, making full use of the space on the plane perpendicular to the first direction. The spatial layout is more reasonable and also conducive to the connection between the main body and the suppression element and the connection between the main body and the coil assembly.

[0223] In the ninth technical solution, the second connecting part is plugged into the coil terminal of the coil assembly, which facilitates the electrical connection between the signal terminal and the coil assembly, thus simplifying the assembly.

[0224] In the tenth technical solution, the first part of the second connecting part is inserted into the third slot section, making the signal terminal less prone to shaking in the third direction. The second part of the second connecting part extends out of the third slot section, thus facilitating insertion into the coil terminal.

[0225] In the eleventh technical solution, each signal terminal is arranged along the second direction, and the first arm extends along the second direction. The second connecting part extends from the first arm along the third direction, and the second arm extends away from the first arm in the third direction. The third connecting part is located on the second arm. Therefore, each second arm is parallel to each other and spaced apart along the second direction, so that the suppression element can be connected between the third connecting parts of two adjacent signal terminals along the second direction, making full use of the space of the shielding part.

[0226] In the eleventh technical solution, by setting three signal terminals, with each of the signal terminals on both sides having a third connection part and the signal terminal in the middle having two third connection parts, two suppression elements can be connected across each other. These two suppression elements can be used for different coil windings, thereby providing suppression function for two circuits in the coil assembly.

[0227] The twelfth technical solution is a specific implementation method in which, since the insertion port is opened away from the first direction, the suppression element can be easily inserted into the slot or removed from the signal terminal along the first direction.

[0228] The thirteenth technical solution is another specific implementation method, which provides a component slot in the shielding part and allows the third connecting part to abut against the lead wire supported by the bottom of the lead wire slot when the signal terminal is inserted, so that the third connecting part can establish an electrical connection with the suppression element.

[0229] In the fourteenth technical solution, the bottom of the lead slot supports the lead wire, allowing the lead wire to enter the slot through the insertion port, making the connection between the suppression element and the signal terminal more reliable.

[0230] In the fifteenth technical solution, the recessed portion forces at least one side wall of the slot formed by the third connecting portion to deform so that the lead wire is clamped in the slot. Therefore, as long as the third connecting portion is inserted into the terminal slot, the deformed side wall will not recover its deformation, and the lead wire can always be reliably clamped in the slot, thereby achieving a more reliable electrical connection between the suppression element and the signal terminal.

[0231] The sixteenth technical solution is a specific implementation of the fifteenth technical solution. First, the walls on both sides of the recess gradually approach each other along the first direction, which can guide the two protrusions into the recess; second, when the two protrusions are inserted into the recess, they are pressed together by the walls of the recess to clamp the lead wire, thus making the connection between the suppression element and the signal terminal more reliable; third, the protrusions are located at the insertion port, and the lead wire is clamped in the slot at a position away from the insertion port, so the deformation of the two protrusions is less likely to break the lead wire.

[0232] In the seventeenth technical solution, the second connecting part is not only suitable for electrical connection with the coil assembly, but also suitable for electrical connection with the suppression element, thus making the signal terminal structure simpler.

[0233] In the eighteenth technical solution, the first connecting part extends outward from the shielding part along the first direction. Simultaneously, the shielding part is provided with a terminal slot suitable for the insertion of the signal terminal along the first direction. The technical means employed is to ensure that the insertion direction of the signal terminal is the same as the penetration direction of the first connecting part. This has two implications: first, the main body is located in the shielding part of the base, fully utilizing the space on the back of the base; second, when the main body is inserted, the first connecting part also extends outward through the base in the same direction. Firstly, compared to solutions where the signal terminal is fastened with fasteners or where the signal terminal is injection molded into the base insert, the signal terminal insertion method is easier to assemble and disassemble, simplifies the assembly process, and improves assembly efficiency. Secondly, when the signal terminal is inserted, the first connecting part is also in place, allowing the signal terminal to establish an electrical connection with an external signal circuit simply by moving along the first direction. Therefore, this also facilitates assembly and improves assembly efficiency.

[0234] In the eighteenth technical solution, the second connecting part is plugged into the coil terminal of the coil assembly, which facilitates the electrical connection between the signal terminal and the coil assembly, thus simplifying assembly. The lead of the suppression element is suitable for plugging into the second connecting part, thus making full use of the plugging space of the second connecting part and simplifying the structure of the signal terminal and the substrate.

[0235] In the nineteenth technical solution, the first part of the second connecting part is inserted into the third slot section, making the signal terminal less prone to shaking in the third direction. The second part of the second connecting part extends out of the third slot section, thus facilitating insertion into the coil terminal and being suitable for insertion into the lead wire of the suppression element.

[0236] The connecting component in the twentieth technical solution includes a connector and a suppressing element. Its main function is to protect the overall structure formed by connecting the suppressing element to the connector, and it has the corresponding technical effect of the connector as defined by the technical solution it references.

[0237] The relay defined in the twenty-first technical solution has the corresponding technical effect of the connector defined in the technical solution it references.

[0238] The relay defined in the twenty-second technical solution has the corresponding technical effects of the connector defined in the referenced technical solution. Furthermore, its scheme of inserting the signal terminal into the terminal slot along the first direction, by providing a limiting part on the housing, limits the movement of the signal terminal away from the first direction. This prevents the signal terminal from becoming loose from the terminal slot due to force away from the first direction when connected to the signal circuit at the first connection part, thus facilitating a reliable connection between the third connection part and the suppression element.

[0239] The twenty-third technical solution further defines a relay with a suppression element, thus having the function of suppressing back electromotive force when the coil assembly is disconnected.

[0240] The twenty-fourth technical solution further includes the specific structure for the relay to realize its basic functions.

[0241] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0242] Example 7

[0243] Referring to Figures 31 and 32, which illustrate the relay 1c in Embodiment 7, as shown in Figure 31,

[0244] From an external perspective, the relay 1c includes a housing 2c and two load terminals 3c. The housing 2c includes a connector 4c and a shell 5c. The connector 4c is located on one side of the shell 5c along a first direction Y, and the connector 4c is fixedly connected to the shell 5c to form the housing 2c. In this embodiment, the shell 5c includes a bottom shell 6c and a top cover 7c. The top cover 7c is disposed on the bottom shell 6c facing away from a third direction X, and the bottom shell 6c and the top cover 7c are fixedly connected to form the shell 5c. The load terminals 3c are fixed relative to the shell 5c and exposed to the outside for electrical connection with an external load circuit. Specifically, a portion of the load terminal 3c is located inside the housing 2c, and another portion extends out of the housing 2c. In this embodiment, the load terminal 3c is fixedly connected to the shell 5c; in other embodiments, the load terminal 3c can also be fixedly connected to the connector 4c, as long as it can be partially exposed outside the shell 2c.

[0245] As shown in Figure 32, the relay 1c also includes a relay body 8c, which is housed within a housing 5c. The relay body 8c includes a magnetic circuit portion 9c and a contact portion 9'c. The magnetic circuit portion 9c includes an armature assembly 10c and a coil assembly 11c. The contact portion 9'c includes a stationary contact and a moving contact. The coil assembly 11c converts the magnetic field according to the control signal from an external signal circuit to drive the armature assembly 10c to move relative to the housing 5c, and to cause the moving contact to close or open with the stationary contact to control the on / off state of the load circuit. The load terminal 3c is electrically connected to the contact portion 9'c, so that the contact portion 9'c is electrically connected to the load circuit. In this embodiment, the housing 5c ​​is fixedly connected to the coil frame, the coil assembly 11c is fixedly connected to the coil frame, and the coil assembly 11c is provided with a coil terminal 12c, which is fixedly connected to the coil frame and extends out of the coil frame along the first direction Y. Specifically, in this embodiment, the coil assembly 11c has two coil windings and three coil terminals 12c. The two coil windings are wound in opposite directions, and the three coil terminals 12c are arranged along the second direction Z, which is perpendicular to the first direction Y. The middle coil terminal 12c is a common terminal. The left coil terminal 12c and the middle coil terminal 12c are electrically connected to one of the coil windings, and the right coil terminal 12c and the middle coil terminal 12c are electrically connected to the other coil winding.

[0246] Referring to Figure 33, which illustrates the connector 4c and the suppression element 13c in this embodiment. As shown in Figure 33, in this embodiment, the relay 1c further includes the suppression element 13c. The suppression element 13c can be a resistor or a diode, etc. The suppression element 13c is mounted on the connector 4c and electrically connected to the coil terminal 12c through the connector 4c. In this embodiment, there are two suppression elements 13c, and the two suppression elements 13c are connected in parallel with the corresponding coil windings. The suppression element 13c includes a body 14c and two leads 15c, which are located on both sides of the body 14c along the second direction Z.

[0247] Since the main inventive concept of this disclosure is focused on connector 4c and housing 5c, the following description will focus on connector 4c and housing 5c.

[0248] As shown in Figure 33, the connector 4c includes a base 16c and at least two signal terminals 17c. In this embodiment, there are three signal terminals 17c, namely a first terminal 17ac, a second terminal 17bc, and a third terminal 17cc. The three signal terminals 17c are arranged along the second direction Z.

[0249] Referring to Figure 34, which shows the base 16c in this embodiment. As shown in Figure 34, the base 16c is provided with a shield 18c and a connecting shell. In this embodiment, the shield 18c is perpendicular to the first direction Y. The shield 18c has an outer surface and an inner surface. Its outer surface is exposed after the connector 4c and the housing 5c ​​are fixed together to form the outer shell 2c. The connecting shell is fixed to the outer surface of the shield 18c. The inner surface of the shield 18c forms a shielding portion 19c, which is shielded after the connector 4c and the housing 5c ​​are fixed together to form the outer shell 2c.

[0250] As shown in Figure 34, the shielding part 19c is provided with three terminal slots 20c and two component slots 21c. The three terminal slots 20c are arranged along the second direction Z and are respectively used to connect and cooperate with the three signal terminals 17c. All terminal slots 20c are provided with a first slot segment 22c, at least one second slot segment 23c and a third slot segment 24c. The first slot segment 22c extends along the second direction Z and has a through hole 25c (shown in Figure 35, the function of which will be introduced later) that penetrates the shielding wall 18c along the first direction Y. The second slot segment 23c extends away from the first slot segment 22c in the third direction X, which is perpendicular to the first direction Y and also perpendicular to the second direction Z. In this embodiment, the signal terminal slots 20c corresponding to the first signal terminal 17ac and the third signal terminal 17cc are located on the left and right sides along the second direction Z and each has a second slot segment 23c. The signal terminal slot 20c corresponding to the second signal terminal 17bc is located in the middle and has two second slot segments 23c. In this embodiment, all second slot segments 23c are provided with recesses 26c (shown in Figure 36, the function of which will be described later). A third slot segment 24c extends from the first slot segment 22c along a third direction X. Two component slots 21c are arranged along a second direction Z. Each component slot 21c is provided with a body slot 27c and two lead slots 28c. The body slot 27c is used to accommodate the body 14c of the suppression element 13c. The lead slots 28c are located on both sides of the body slot 27c along the second direction Z and are respectively used to accommodate the leads 15c of the suppression element 13c. The lead slots 28c intersect with the corresponding terminal slots 20c. In this embodiment, the two lead slots of the same component slot 21c intersect with the second slot segments 23c of two adjacent terminal slots 20c.

[0251] Referring to Figures 37 and 38, Figure 37 shows the third signal terminal 17cc in Embodiment 7, and Figure 38 shows the first signal terminal 17ac in Embodiment 7. As shown in Figure 37, each signal terminal 17c includes a body 29c and a first connecting portion 30c. The body 29c is provided with a first arm 32c, at least one second arm 33c, and a second connecting portion 34c. The first arm 32c extends along a second direction Z. The second arm 33c extends from the first arm 32c away from a third direction X. As shown in Figure 33, in this embodiment, the first signal terminal 17ac and the second signal terminal 17cc each have only one second arm 33c, while the second signal terminal 17bc has two second arms 33c, which are arranged along the second direction Z and are parallel to each other. As shown in Figure 38, in this embodiment, each second arm 33c is provided with a third connecting portion 37c, and each third connecting portion 37c is provided with a slot 38c. The slot 38c is provided with an insertion port 39c, which in this embodiment is opened along a first direction Y. The lead 15c of the suppressing element 13c is adapted to be inserted into the slot 38c through the insertion port 39c. In this embodiment, the insertion port 39c tapers along the insertion direction of the lead 15c (away from the first direction Y) to guide the lead 15c into the slot 38c. In this embodiment, the bottom of the slot 38c is provided with a retaining section 40c, which is adapted to hold the lead 15c in the slot 38c after insertion and prevent it from moving further away from the first direction Y. The retaining section 40c is provided with an inlet 41c for the lead 15c to enter the retaining section 40c. In this embodiment, the opening distance of the inlet 41c is smaller than the inner diameter of the retaining section 40c. In this embodiment, the third connecting part 37c is provided with two side groove walls forming the slot 38c, and both side groove walls are provided with protrusions 42c at the location of the insertion port 39c. As shown in FIG37, the second connecting part 34c extends from the first arm 32c along the third direction X. In this embodiment, the second connecting portion 34c has a first portion 35c near the first arm 32c and a second portion 36c away from the first arm 32c. The second portion 36c is U-shaped and has a terminal connection groove that opens in the third direction X. The first connecting portion 30c extends from the first arm 32c in the first direction Y, and has a protrusion 31c near the first arm 32c. The protrusion 31c protrudes in the second direction Z.

[0252] As shown in Figure 33, if connector 4c needs to connect to suppressing element 13c to form a connection assembly, then first place the two suppressing elements 13c into the corresponding element slots 21c, so that the bottom of the lead slot 28c abuts against the lead wire 15c. Next, insert the three signal terminals 17c into the corresponding terminal slots 20c, as shown in Figure 35. The first connecting part 30c passes through the through hole 25c and extends out of the outer surface of the shield 18c. The protrusion 31c is interference-fitted with the through hole 25c, so that the signal terminal 17c is fixed to the base 16c. At the same time, the first arm 32c is inserted into the first slot segment 22c, the second arm 33c is inserted into the second slot segment 23c, the first part 35c of the second connecting part 34c is inserted into the third slot segment 24c, and the second part 36c of the second connecting part 34c extends out of the third slot segment 24c in the third direction X. At the same time, the bottom of the lead slot 28c supports the lead wire 15c so that the lead wire 15c enters the slot 38c through the insertion port 39c until it enters the retaining section 40c through deformation, so that the third connecting part 37c can reliably abut against the lead wire 15c supported by the bottom of the lead slot 28c. As shown in Figure 36, the two protrusions 42c of the third connecting portion 37c are inserted into the recess 26c of the second slot segment 23c. The walls of the recess 26c on both sides in the third direction X force the third connecting portion 37c to deform at least one side wall of the slot 38c so that the lead wire 15c is clamped in the slot. In this embodiment, since the walls of the recess 26c on both sides in the third direction X are also configured to be close to each other in the first direction Y, the two protrusions 42c can be guided into the recess 26c. When the two protrusions 42c are inserted into the recess 26c, they are forced to be close to each other so that the lead wire 15c is clamped in the slot 15c at a position away from the insertion port 39c.

[0253] If connector 4c does not require connection to suppression element 13c, then simply insert the three signal terminals 17c into the corresponding terminal slots 20c to complete the assembly of connector 4c.

[0254] Referring to Figure 39, which shows the bottom shell 6c in this embodiment. As shown in Figure 39, in this embodiment, the bottom shell 6c is provided with a limiting part 43c at the position facing the connector 4c. The limiting part 43c is used to limit the movement of all terminals 17c away from the first direction Y when the connector 4c is connected to the bottom shell 6c.

[0255] Referring to Figure 40, which shows the state when connector 4c is fixed to the bottom housing 6c. As shown in Figure 40, connector 4c is inserted into the bottom housing 6c away from the third direction X. After insertion, the limiting part 43c limits all signal terminals 17c, preventing the signal terminals 17c from moving away from the first direction Y. After insertion, the second connecting part 34c extends out of the limiting wall along the third direction Y.

[0256] As shown in Figure 32, when the relay body 8c is housed within the base shell 6c and the load terminal 3c is fixed to the base shell 6c, during the process of the connector 4c being inserted into the base shell 6c away from the third direction X, the coil terminal 12c is also inserted into the terminal connection slot of the second connection part 34c along the third direction X, so that the coil terminal 12c and the corresponding second connection part 34c are inserted and electrically connected, thereby establishing an electrical connection between the signal terminal 17c and the coil assembly 11c, allowing the coil assembly 11c to be electrically connected to the signal circuit through the signal terminal 17c. The signal circuit can then control the coil assembly 11c to change the magnetic field to drive the armature assembly 10c to move. At the same time, two suppression elements 13c are connected in parallel with the corresponding coil windings, thereby realizing the function of suppressing the back electromotive force when the coil windings are disconnected.

[0257] As shown in Figure 31, after the connector 4c is connected, the upper cover 7c is placed on the bottom shell 6c and sealed and fixed to the bottom shell 6c, thus completing the assembly of the outer shell 2c and the relay 1c is also assembled.

[0258] In this embodiment, the signal terminal 17c is provided with a main body 29c and a first connecting part 30c, which not only realizes the basic function of electrically connecting the coil assembly 11c to the signal circuit, but also allows for the selective parallel connection of the coil assembly 11c and the suppression element 13c. Therefore, when addressing two possible customer requirements for the suppression element 13c, it is only necessary to select whether to connect or not connect the suppression element 13c to the connector 4c. When redesigning and developing to meet customer needs, since the design and development only need to be focused on the connector 4c without redesigning and developing the housing 5c ​​and the relay body 8c housed within the housing 5c, the development cycle can be saved. Furthermore, since the mold investment cost is concentrated only on the connector 4c, the cost of re-molding is greatly reduced, and the design and production of the housing 5c ​​and the relay body 8c are standardized, improving production efficiency and reducing production costs.

[0259] In this embodiment, without requiring redesign and development to meet customer needs, a body 29c suitable for connecting the suppression element 13c is provided on the connector 4c. Compared to designing a connector suitable for fixing to the housing 5c ​​or coil frame, this reduces production complexity and saves on the thickness dimension of the relay. Compared to the prior art, the relay 1c has higher space utilization, especially in terms of effectively reducing the thickness dimension.

[0260] In this embodiment, the main body 29c is mounted on the shielding part 19c, so it is not exposed relative to the outer shell 2c. The main body 29c is suitable for electrical connection with the suppression element 13c, so the outer shell 2c can also protect the suppression element 13c.

[0261] In this embodiment, the main body 29c is provided with a second connecting part 34c suitable for electrical connection with the coil assembly 11c and a third connecting part 37c suitable for electrical connection with the suppression element 13c. Therefore, the structure and shape of the main body 29c can be set more flexibly and is also suitable for making full use of the space in all directions of the connector 4c.

[0262] In this embodiment, the third connecting part 37c is provided with a slot 38c, and the slot 38c is provided with an insertion port 39c. The lead 15c of the suppression element 13c is adapted to be inserted into the slot 38c through the insertion port 39c. The technical means adopted is to enable the suppression element 13c to be plugged into and mated with the signal terminal 17c. Compared with the optional method of connecting the suppression element 13c to the third connecting part 37c by soldering, the assembly is simpler and the production efficiency is higher.

[0263] In this embodiment, the insertion port 39c gradually narrows along the insertion direction. The technical means adopted is to guide the lead wire 15c into the slot 38c through the insertion port 39c which is open away from the insertion direction, so that the suppression element 13c can be more easily inserted into the signal terminal 17c.

[0264] In this embodiment, the slot 38c is provided with a holding section 40c, and the holding section 40c is provided with an inlet 41c. The opening distance of the inlet 41c is smaller than the inner diameter of the holding section 40c. The technical means adopted is to make the lead 15c of the suppression element 13c deform when it passes through the inlet 41c. This deformation is partly plastic deformation and partly elastic deformation. After the lead 15c of the suppression element 13c enters the holding section 40c, the elastic deformation part will recover. Thus, unless the suppression element 13c is subjected to a strong external force, it cannot exit the holding section 40c from the inlet 41c. Therefore, after the suppression element 13c enters the holding section 40c, it can reliably connect with the signal terminal 17c under normal use.

[0265] In this embodiment, the first connecting portion 30c extends outward from the shielding portion 19c along the first direction Y. Simultaneously, the shielding portion 19c is provided with a terminal slot 20c suitable for the insertion of the signal terminal 17c along the first direction Y. The technical means employed is to ensure that the insertion direction of the signal terminal 17c is the same as the insertion direction of the first connecting portion 30c. The main body 29c is located in the shielding portion 19c of the base 16c, making full use of the space on the back of the base 16c. Compared to the scheme where the signal terminal 17c is fastened with fasteners or the scheme where the signal terminal 17c is inserted into the base 16c via injection molding, the scheme of inserting the signal terminal 17c into the terminal slot 20c is easier to assemble and disassemble, has a simpler assembly process, and is conducive to improving assembly efficiency. When the signal terminal 17c is inserted, the first connecting portion 30c is also in place, so that only the movement of the signal terminal 17c along the first direction Y is needed to establish an electrical connection between the signal terminal 17c and the external signal circuit. Therefore, it is also easy to assemble and is conducive to improving assembly efficiency.

[0266] In this embodiment, the signal terminal 17c is inserted into the shield 18c perpendicular to the first direction Y, the main body 29c is located on the inner surface of the shield 18c, and the first connecting part 30c passes through the shield 18c through the through hole 25c. Therefore, this solution makes full use of the inner surface of the shield 18c and saves space.

[0267] In this embodiment, the first connecting part 30c is interference-fitted with the through hole 25c, so that when the signal terminal 17c is inserted into the position, it is fixed relative to the base 16c. Therefore, during the process of fixing the base 16c and the housing 5c, the signal terminal 17c is not easy to leave the proper position, thereby avoiding assembly failure or the need for other technical means to keep the signal terminal 17c in the proper position.

[0268] In this embodiment, the main body 29c is provided with a first arm 32c and a second arm 33c. The first arm 32c extends along the second direction Z, and the second arm 33c extends away from the third direction X. The first direction Y, the second direction Z, and the third direction X are perpendicular to each other. Therefore, the signal terminal 17c forms a first L-shaped structure on a plane perpendicular to the first direction Y. The first connecting part 30c extends from the first arm 32c along the first direction Y, so that the main body 29c and the first connecting part 30c form a second L-shaped structure on a plane perpendicular to the second direction Z. In addition, the terminal slot 20c is provided with a first slot segment 22c that is inserted and cooperates with the first arm 32c and a second slot segment 23c that is inserted and cooperates with the second arm 33c. This ensures that when the signal terminal 17c is inserted into the terminal slot 20c, it is reliably inserted and limited on a plane perpendicular to the first direction Y, and will not wobble in the second direction Z or the third direction X.

[0269] In this embodiment, relative to the first arm 32c, the second arm 33c extends from the first arm 32c away from the third direction X, and the third connecting part 37c is located in the second arm 33c. The second connecting part 34c extends from the first arm 32c along the third direction X, so that the second connecting part 34c and the third connecting part 37c are arranged on both sides of the first arm 32c, making full use of the space on the plane perpendicular to the first direction Y. The spatial layout is more reasonable and also facilitates the connection between the main body 29c and the suppression element 13c and the connection between the main body 29c and the coil assembly 11c.

[0270] In this embodiment, the second connecting part 34c is plugged into the coil terminal 12c of the coil assembly 11c, which facilitates the electrical connection between the signal terminal 17c and the coil assembly 11c, thus making the assembly simpler.

[0271] In this embodiment, the first part 35c of the second connecting part 34c is inserted into the third slot 24c, making the signal terminal 17c less prone to shaking in the third direction X. The second part 36c of the second connecting part 34c extends out of the third slot 24c, thus facilitating insertion into the coil terminal 12c.

[0272] In this embodiment, each signal terminal 17c is arranged along the second direction Z, and the first arm 32c extends along the second direction Z. The second connecting portion 34c extends from the first arm 32c along the third direction X. The second arm 33c extends from the first arm 32c away from the third direction X. The third connecting portion 37c is located in the second arm 33c. Therefore, each second arm 33c is parallel to each other and spaced apart along the second direction Z, so that the suppression element 13c can be connected between the third connecting portions 37c of two adjacent signal terminals 17c along the second direction Z, making full use of the space of the shielding portion 19c.

[0273] In this embodiment, by setting three signal terminals 17c, and each of the signal terminals 17c on both sides is provided with a third connection part 37c, and the signal terminal 17c in the middle is provided with two third connection parts 37c, two suppression elements 13c can be connected across each other. These two suppression elements 13c can be used for different coil windings, thereby providing suppression function for the two circuits in the coil assembly 11c.

[0274] In this embodiment, by providing an element slot 21c in the shielding portion 19c, and by having the third connecting portion 37c abut against the lead wire 15c supported by the bottom of the lead wire slot 28c when the signal terminal 17c is inserted, the third connecting portion 37c can establish an electrical connection with the suppression element 13c.

[0275] In this embodiment, the bottom of the lead slot 28c supports the lead wire 15c, allowing the lead wire 15c to enter the slot 38c through the insertion port 39c, making the connection between the suppression element 13c and the signal terminal 17c more reliable.

[0276] In this embodiment, the second slot segment 23c is provided with a recessed portion 26c. The recessed portion 26c forces the third connecting portion 37c to deform at least one side wall of the slot 38c so that the lead wire 15c is clamped in the slot 38c. Therefore, as long as the third connecting portion 37c is inserted into the terminal slot 20c, the deformed side wall will not recover its deformation, and the lead wire 15c can always be reliably clamped in the slot 38c, thereby achieving a more reliable electrical connection between the suppression element 13c and the signal terminal 17c.

[0277] In this embodiment, both side groove walls of the third connecting portion 37c are provided with protrusions 42c at the location of the insertion port 39c. The walls of the recessed portion 26c on both sides along the third direction X gradually approach each other along the first direction Y. When the two protrusions 42c are inserted into the recessed portion 26c, they are forced to approach each other so that the lead wire 15c is clamped in the slot 38c away from the insertion port 39c. First, the walls of the recessed portion 26c on both sides along the third direction X gradually approach each other along the first direction Y, which can guide the two protrusions 42c into the recessed portion 26c. Second, when the two protrusions 42c are inserted into the recessed portion 26c, they are pressed together by the wall of the recessed portion 26c to clamp the lead wire 15c. Therefore, the connection between the suppression element 13c and the signal terminal 17c is more reliable. Third, the protrusions 42c are located at the location of the insertion port 39c, and the lead wire 15c is clamped in the slot 38c away from the insertion port 39c. Therefore, the deformation of the two protrusions 42c is less likely to break the lead wire 15c.

[0278] In this embodiment, by providing a limiting part 43c on the housing 5c, the movement of the signal terminal 17c away from the first direction Y is limited, so that the signal terminal 17c cannot be loosened due to the force away from the first direction Y when the first connecting part 30c is connected to the signal circuit. Therefore, it is beneficial to ensure a reliable connection between the third connecting part 37c and the suppression element 13c.

[0279] Example 8

[0280] Referring to Figures 42 and 43, which illustrate the connector 4c and the suppression element 13c in Embodiment 8, as shown in Figures 42 and 43, Embodiment 8 differs from Embodiment 7 in that the insertion port 39c is opened away from the first direction Y. Therefore, the signal terminal 17c can be inserted into the terminal slot 20c first, and then the suppression element 13c can be inserted into the element slot 21c and the slot 38c. All other aspects of Embodiment 8 are the same as those of Embodiment 7.

[0281] In Embodiment 8, since the insertion port 39c is opened away from the first direction Y, the suppression element 13c can be easily inserted into the slot 38c along the first direction Y or removed from the terminal 17c.

[0282] Example 9

[0283] Referring to Figure 44, which shows the relay 1c in Embodiment 9. As shown in Figure 44, in this embodiment, Embodiment 9 differs from Embodiment 7 in that the main body 29c of the signal terminal 13c only has a second connecting portion 34c, and lacks the first arm 32c, second arm 33c, and third connecting portion 37c. The base 16c does not have an element slot 21c, and the terminal slot 20c lacks the first slot segment 22c and the second slot segment 23c, but is still connected to the through hole 25c. In this embodiment, the terminal connecting slot on the second part 36c of the second connecting portion 34c is used not only for the coil terminal 12c to be inserted, but also for the lead 15c of the suppression element 13c to be inserted. In some cases, if the lead 15c cannot be tightly inserted into the terminal connecting slot, it needs to be welded for fixation. Similarly, each of the two suppression elements 13c has one lead 15c that needs to be inserted into the second connecting slot of the signal terminal 17c located in the middle along the X-axis direction. All other aspects of Embodiment 9 are the same as those of Embodiment 7.

[0284] Compared to Embodiment 7, in this embodiment, the second connecting part 34c is used not only to connect to the coil terminal 12c but also to connect to the lead 15c of the suppression element 13c, making the structure of the signal terminal 17c and the base 16c simpler.

[0285] In existing technologies, inductive devices such as coils generate a back electromotive force when disconnected. Therefore, it is generally required to connect a suppression element, such as a resistor, diode, or voltage suppressor, in parallel across the inductive device. Of course, in other applications, electrical connection to the device is also necessary via connection terminals. In existing technologies, open slots are often provided on the connection terminals to facilitate electrical connection. The device's leads are inserted into the slots to achieve electrical connection. However, after the device's leads are inserted into the slots, vibration or other factors often cause the leads to gradually slip out of the slots over long-term use, resulting in electrical connection failure.

[0286] This disclosure also provides an electrical connection structure that makes the electrical connection between the component and the connection terminal more reliable than that of the prior art.

[0287] Therefore, the present disclosure adopts the following technical solution:

[0288] The first technical solution relates to an electrical connection structure for electrically connecting to a component, comprising: a base having a connection groove; and a connection terminal fixed to the base and having a connection portion, wherein the connection portion has a slot and sidewalls located on both sides of the slot, the slot having an opening for inserting a lead wire of the component into the slot, and when the connection portion is inserted into the connection groove, at least one sidewall is forced to deform so that the lead wire of the component is clamped in the slot.

[0289] The second technical solution is based on the first technical solution, wherein at least one side wall of the connecting part is provided with a protrusion facing the connecting groove, the connecting groove is provided with a recess, and when the connecting part is inserted into the connecting groove, the groove wall of the recess forces the protrusion to deform so that the lead wire of the component is clamped in the slot.

[0290] The third technical solution is based on the second technical solution, wherein both side walls of the connecting part are provided with protrusions. After the two protrusions are inserted into the recess, the groove walls on both sides of the recess force the two protrusions to move closer to each other so that the lead wire of the element is clamped in the slot.

[0291] The fourth technical solution is based on the third technical solution, wherein the recessed portion is provided with an insertion port, and starting from the insertion port, the groove walls on both sides of the recessed portion move closer to each other along the insertion direction, so as to force the two protrusions entering the insertion port to move closer to each other.

[0292] The fifth technical solution is based on the first technical solution, wherein the opening gradually widens along the direction in which the connecting part is inserted into the connecting groove.

[0293] The sixth technical solution is based on the first technical solution, wherein the slot is provided with a holding section for holding the lead wire therein, the holding section is provided with an inlet for the lead wire to enter the holding section, and the opening distance of the inlet is smaller than the inner diameter of the holding section.

[0294] The seventh technical solution is based on any one of the first to sixth technical solutions, wherein the substrate is further provided with a body groove and a lead wire groove, the body groove is used to accommodate the body of the component, the lead wire groove is used to accommodate the lead wire and communicates with the body groove, the connecting groove intersects with the lead wire groove, and the lead wire is supported by the bottom of the lead wire groove and inserted into the slot from the opening.

[0295] Eighth Technology Based on the seventh technical solution, the body slot is connected to two or more lead slots to form a component slot to accommodate the component. At least two lead slots of the same component slot intersect with the corresponding connecting slots. Each connecting slot that intersects with each lead slot of the same component slot is respectively inserted and engaged with the connecting part of a different connecting terminal.

[0296] The ninth technical solution is based on the first to sixth technical solutions, wherein the connecting part is interference-fitted with the connecting groove so that the connecting terminal is fixed to the base; the connecting terminal is also provided with a first connecting end, the first connecting end being at least partially located outside the connecting groove, so as to be electrically connected to other devices.

[0297] The tenth technical solution is based on the first to sixth technical solutions, wherein the connecting part is provided with a first arm and a second arm, the first arm extends along a first direction, the second arm extends along a second direction, the connecting part is inserted into the connecting groove along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the slot is located in the first arm or the second arm; the connecting groove is provided with a first groove section suitable for insertion and cooperation with the first arm and a second groove section suitable for insertion and cooperation with the second arm.

[0298] Compared with existing technologies, the above solution has the following beneficial effects:

[0299] In the first technical solution, the connecting terminal fixed to the substrate is provided with a slot, and the slot has an opening for inserting the lead wire of the component. Since at least one sidewall of the connecting part is forced to deform when the connecting part is inserted into the connecting slot, the forced deformation of the sidewall will not recover its deformation as long as the connecting part is inserted into the connecting slot, and the lead wire will always be reliably clamped in the slot. This makes the electrical connection between the component and the connecting terminal more reliable than in the prior art.

[0300] The second technical solution is a specific implementation of the first technical solution. At least one side wall of the connecting part is provided with a protrusion, and the connecting groove is provided with a recess. When the connecting part is inserted into the connecting groove, the groove wall of the recess forces the protrusion to deform, thereby realizing the first technical solution.

[0301] In the third technical solution, after the two protrusions are inserted into the recess, the groove wall of the recess forces the two protrusions to move closer to each other so that the two side walls clamp the lead wire, thereby enabling the lead wire to be clamped by the slot more reliably.

[0302] In the fourth technical solution, the groove walls on both sides of the recess gradually approach each other along the insertion direction of the protrusion, which can guide the protrusion when it is inserted and force the two protrusions entering the insertion port to deform so that the two side walls clamp the lead wire and prevent the slot from opening.

[0303] In the fifth technical solution, the opening gradually widens along the direction of insertion into the connecting groove of the connecting part, which can guide the lead wire into the slot and reduce the shearing force of the side wall on the lead wire before the bottom of the lead wire groove enters the slot, thus more effectively preventing the lead wire of the component from breaking.

[0304] In the sixth technical solution, the slot is provided with a retaining section, and the retaining section has an inlet. The opening distance of the inlet is smaller than the inner diameter of the retaining section, so that the lead wire of the component will deform when passing through the inlet. This deformation is partly plastic deformation and partly elastic deformation. After the lead wire of the component enters the retaining section, the elastic deformation part will recover, so that the lead wire cannot exit the retaining section from the inlet. Therefore, after the lead wire enters the retaining section, the reliable connection between the lead wire and the connecting terminal can be further improved.

[0305] In the seventh technical solution, the body groove and the lead groove are connected and used to house the component body, allowing the component to be housed in the substrate, resulting in a higher degree of integration between the component and the electrical connection structure. The lead wire is supported by the bottom of the lead groove and inserted into the slot from the opening; therefore, the lead wire is sandwiched between the bottom of the lead groove and the wall of the slot. Since the connection terminal is fixed to the substrate, the positional relationship between the bottom of the lead groove and the connection part does not change, thus enabling the lead wire to maintain a more reliable connection with the connection terminal.

[0306] In the eighth technical solution, each connecting slot that intersects with each lead slot of the same component slot is respectively inserted into the connecting part of a different connecting terminal, and the connecting terminal is fixed to the base. Therefore, at least two ends of the component can be electrically connected to the outside through different connecting terminals.

[0307] In the ninth technical solution, the connecting part and the connecting groove are interference-fitted, so that after the connecting terminal is inserted into the base, the fixed connection between the connecting terminal and the base can be completed, making the installation process more convenient. The first connecting end is at least partially located outside the connecting groove, which is beneficial for electrical connection with other devices.

[0308] In the tenth technical solution, the extension direction of the first arm is perpendicular to the extension direction of the second arm to form an L-shaped structure, which makes the connection between the connecting part and the connecting groove more stable and less prone to shaking.

[0309] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0310] Example 10

[0311] In this embodiment, the first direction Y is a bidirectional direction, the second direction Z is a unidirectional direction, and the third direction X is a unidirectional direction, and the three are orthogonal to each other.

[0312] Referring to Figures 45 and 46, which illustrate the electrical connection structure 1d in the embodiment. As shown in Figure 45, the electrical connection structure 1d is used for electrical connection with element 2d. As shown in Figure 46, element 2d includes a body 3d and two leads 4d located on both sides of the body.

[0313] As shown in Figure 46, in this embodiment, the electrical connection structure 1d includes a base 5d and three connection terminals 6d. The three connection terminals 6d are the first connection terminal 6ad, the second connection terminal 6bd, and the third connection terminal 6cd.

[0314] Referring to Figures 47, 48, and 49, Figure 47 shows the substrate 5d in the embodiment, and Figures 48 and 49 show the partial mating relationship between the connecting terminal 6d and the substrate 5d. As shown in Figure 47, in this embodiment, the substrate 5d is provided with component slots 7d and connecting slots 8d. There are two component slots 7d, arranged along the first direction Y. Each component slot 7d includes a body slot 9d and two lead slots 10d. The body slot 9d is used to accommodate the body 3d of component 2d, and the two lead slots 10d are located on both sides of the body slot 9d along the first direction Y and are respectively used to accommodate the leads 4d of component 2d. There are three connecting slots 8d, arranged along the first direction Y. Each connecting slot 8d has a first slot segment 11d, a second slot segment 12d, and a third slot segment 13d that are interconnected. The first slot segment 11d extends along the first direction Y, the second slot segment 12d extends from the first slot segment 11d along the second direction Z, and the third slot segment 13d extends from the first slot segment away from the second direction Z. In this embodiment, in the connecting slots 8d located on both sides along the first direction Y, there is only one second slot segment 12d; in the connecting slot 8d located in the middle along the first direction Y, there are two second slot segments 12d that are parallel to each other. As shown in Figure 48, in this embodiment, each first slot segment 11d has a slot hole 14d extending along the third direction X, and the slot hole 14d penetrates the substrate 5d along the third direction X. As shown in Figure 47, in this embodiment, each second slot segment 12d intersects perpendicularly with a lead wire slot 10d. The second segment 12d of the left connecting slot 8d and the second segment 12d of the middle connecting slot 8d on the left intersect with the two lead slots 10d of a component slot 7d, respectively; the second segment 12d of the right connecting slot 8d and the second segment 12d of the middle connecting slot 8d on the right intersect with the two lead slots 10d of a component slot 7d, respectively. As shown in Figure 49, in this embodiment, each second segment 12d has a recess 15d at the position where it intersects with the lead slot 10d. The recess 15d has an insertion port. Starting from the insertion port, the slot walls on both sides of the recess 15d gradually approach each other along the third direction X.

[0315] Referring to Figures 50 and 51, Figure 50 shows the connecting terminal 6d in the embodiment, and Figure 51 shows the first connecting terminal 6ad in the embodiment. As shown in Figure 50, the connecting terminal 6d includes a connecting portion 16d, a first connecting end 17d, and a second connecting end 18d that are integrally connected to each other. The connecting portion 16d includes a first arm 19d, a second arm 20d, a protrusion 21d, and a third arm 22d that are integrally connected to each other. The first arm 19d extends along a first direction Y and is adapted to be inserted into a first slot segment 11d; the second arm 20d extends from the first arm 19d along a second direction Z and is adapted to be inserted into a second slot segment 12d; the protrusion 21d extends from the first arm 19d along a third direction X and is adapted to be interference-fitted with a slot hole 14d; and the third arm 22d extends from the first arm 19d away from the second direction Z and is adapted to be inserted into a third slot segment 13d. As shown in Figure 51, the second arm 20d has a slot 24d and sidewalls 24ad located on both sides of the slot 24d along the second direction Z. Each sidewall 24ad has two protrusions 23d at its front end along the third direction X. The slot 24d has an opening 25d along the third direction X for inserting the lead 4d of component 2d. The opening 25d gradually widens along the third direction X, and a retaining section 26d is formed at the bottom of the slot 24d. The retaining section 26d is used to hold the lead 4d within it. The retaining section 26d has an inlet 27d for the lead 4d to enter the retaining section 26d, and the opening distance of the inlet 27d is smaller than the inner diameter of the retaining section 26d. As shown in Figure 50, the first connecting end 17d extends from the protrusion 21d along the third direction X, and the second connecting end 18d extends from the third arm 22d away from the second direction Z. Both the first and second connecting ends are used to connect other devices and are located outside the connecting slot 8d.

[0316] As shown in Figure 45, in this embodiment, two components 2d are adapted to be installed in two component slots 7d. The body 3d of each component 2d is accommodated in the body slot 9d, and the lead wire 4d of each component 2d is accommodated in the lead wire slot 10d. The connecting terminal 6d is inserted into the base 5d along the third direction X direction, so that the connecting part 16d is inserted into the connecting slot 8d. Specifically, the first arm 19d is inserted into the first slot segment 11d, the protrusion 21d is interference-fitted with the slot hole 14d, and the second arm 20d is inserted into the second slot segment 12d. As shown in Figure 49, the lead wire 4d is supported by the bottom of the lead wire slot 10d and inserted into the slot 24d from the opening 25d and abuts against the slot wall of the slot 24d until the lead wire 4d enters the holding section 26d from the inlet 27d. The lead wire 4d is clamped between the bottom of the lead wire slot 10d and the slot wall of the slot 24d and is held in the holding section 26d. When the connecting part 16d is inserted into the connecting groove 8d, the two protrusions 23d extend into the recess 15d and engage with it. As the groove walls on both sides of the recess 15d gradually approach each other along the third direction X, after the two protrusions 23d are inserted into the recess 15d, the walls on both sides of the recess 15d force the two protrusions 23d to approach each other so that the lead wire 4d is clamped in the slot 24d. As shown in Figure 45, the third arm 22d engages with the third groove segment 13d, and the second connecting end 18d extends out of the third groove segment 13d away from the second direction Z. As shown in Figure 48, the first connecting end 17d extends out of the slot 14d along the third direction X.

[0317] After the electrical connection structure 1d is completed, the two leads 4d of the component 2d, which is fixed in the component slot 7d on the left side along the first direction Y, are electrically connected to the first connection terminal 6ad and the second connection terminal 6bd, respectively, and can be connected in parallel or series with external devices through the first connection terminal 6ad and the second connection terminal 6bd. Similarly, the two leads 4d of the component 2d, which is fixed in the component slot 7d on the right side along the first direction Y, are electrically connected to the second connection terminal 6bd and the third connection terminal 6cd, respectively, and can be connected in parallel or series with external devices through the second connection terminal 6bd and the third connection terminal 6cd.

[0318] In this embodiment, the connecting terminal 6d, which is fixedly connected to the substrate 5d, is provided with a slot 24d. The slot 24d has an opening 25d for inserting the lead wire 4d of the component 2d into the slot 24d. When the connecting part 16d is inserted into the connecting groove 8d, at least one side wall 24ad of the connecting part 16d is forced to deform so that the lead wire 4d of the component 2d is clamped in the slot 24d. Therefore, as long as the connecting part 16d is inserted into the connecting groove 8d, the forced deformed side wall 24ad will not recover its deformation, and the lead wire 4d will always be reliably clamped in the slot 24d. This makes the electrical connection between the component 2d and the connecting terminal 6d more reliable than that of the prior art.

[0319] In this embodiment, after the two protrusions 23d are inserted into the recess 15d, the groove wall of the recess 15d forces the two protrusions 23d to move closer to each other so that the two side walls 24ad clamp the lead wire 4d, thereby enabling the lead wire 4d to be clamped more reliably by the slot 24d.

[0320] In this embodiment, the groove walls on both sides of the recess 15d gradually approach each other along the insertion direction of the protrusion 23d, which can guide the protrusion 23d when it is inserted and force the two protrusions 23d inserted into the insertion port to deform so that the two side walls 24ad clamp the lead wire 4d, while preventing the slot 24d from opening.

[0321] In this embodiment, the opening 25d gradually opens along the direction (third direction X) of the connection part 16d inserting into the connection groove 8d, which can guide the lead wire 4d into the slot 24d and reduce the shearing force of the side wall 24ad on the lead wire 4d before the bottom of the lead wire groove 10d enters the slot 24d, thus more effectively preventing the lead wire 4d of the component 2d from breaking.

[0322] In this embodiment, the slot 24d is provided with a retaining section 26d, and the retaining section 26d is provided with an inlet 27d. The opening distance of the inlet 27d is smaller than the inner diameter of the retaining section 26d, so that the lead 4d of the component 2d deforms when passing through the inlet 27d. This deformation is partly plastic deformation and partly elastic deformation. After the lead 4d of the component 2d enters the retaining section 26d, the elastically deformed part will recover, so that the lead 4d cannot exit the retaining section 26d from the inlet 27d. Therefore, after the lead 4d enters the retaining section 26d, the reliable connection between the lead 4d and the connecting terminal 6d can be further improved.

[0323] In this embodiment, the body groove 9d communicates with the lead groove 10d and serves as the body 3d for accommodating the component 2d, allowing the component 2d to be accommodated by the substrate 5d, resulting in a higher degree of integration between the component 2d and the electrical connection structure 1d. The lead 4d is supported by the bottom of the lead groove 10d and inserted into the slot 24d through the opening 25d. Therefore, the lead 4d is sandwiched between the bottom of the lead groove 10d and the wall of the slot 24d. Since the connection terminal 6d is fixed to the substrate 5d, the lead 4d can maintain a more reliable connection with the connection terminal 6d.

[0324] In this embodiment, each connecting slot 8d that intersects with each lead slot 10d of the same component slot 7d is respectively inserted into the connecting portion 16d of different connecting terminals 6d, and the connecting terminals 6d are fixed to the base 5d. Therefore, at least two ends of the component 2d can be electrically connected to the outside through different connecting terminals 6d.

[0325] In this embodiment, the protrusion 21d and the slot 14d are interference-fitted, that is, the connecting part 16d and the connecting slot 8d are interference-fitted, so that after the connecting terminal 6d is inserted into the base 5d, the fixed connection between the connecting terminal 6d and the base 5d can be completed, making the installation process more convenient. The first connecting end 17d and the second connecting end 18d are located outside the connecting slot 8d, which is beneficial for electrical connection with other devices.

[0326] In this embodiment, the extension direction of the first arm 19d is perpendicular to the extension direction of the second arm 20d to form an L-shaped structure, making the insertion and engagement of the connecting part 16d and the connecting groove 8d more stable and less prone to shaking.

[0327] Example 11

[0328] Referring to Figures 52 and 53, Figure 52 shows the third connecting terminal 6cd in Embodiment Eleven, and Figure 53 shows the partial mating relationship between the connecting terminal 6d and the base 5d in Embodiment Eleven. As shown in Figures 52 and 53, the only difference between the connecting terminal 6d in this embodiment and the connecting terminal 6d in Embodiment Ten is that the upper sidewall 24ad along the second direction Z no longer has a protrusion 23d, and only the lower sidewall 24ad has a protrusion 23d.

[0329] When the connecting part 16d is inserted into the connecting groove 8d, the protrusion 23d extends into the recess 15d. The recess 15d forces the protrusion 23d to deform, causing the lower side wall 24ad to move closer to the upper side wall 24ad, thereby clamping the lead wire 4d in the slot 24d.

[0330] The other parts of Example 11 are the same as those in Example 10.

[0331] Example 11 provides another embodiment of this disclosure. It shows that even if only one sidewall 24ad is forced to deform by the connecting groove 8d, the lead wire 4d can be clamped in the slot 24d, thereby achieving the inventive objective of this disclosure.

[0332] The description of the above specification and embodiments is used to explain the scope of protection of this disclosure, but does not constitute a limitation on the scope of protection of this disclosure.

Claims

1. A housing characterized by, The shell is provided with a first wall, and the first opening is formed in the first wall.

2. A housing as claimed in claim 1, characterized in that The shell is provided with a first wall, and the first opening is formed in the first wall.

3. A housing as claimed in claim 1, characterized in that The shell is provided with a first wall, and the first opening is formed in the first wall.

4. A housing as claimed in claim 3, wherein the first and second housing portions are formed from a single piece of material. The shell is provided with a first wall, and the first opening is formed in the first wall.

5. A housing as claimed in claim 3, wherein the first and second housing portions are formed from a single piece of material. 5 The shell is provided with a first wall, and the first opening is formed in the first wall.

6. A housing as claimed in claim 3, wherein The shell is provided with a first wall, and the first opening is formed in the first wall.

7. A housing as claimed in claim 6, wherein The shell is provided with a first wall, and the first opening is formed in the first wall.

8. A housing as claimed in claim 6, wherein The shell is provided with a first wall, and the first opening is formed in the first wall.

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11. A relay characterized by comprising: It comprises a relay body, a signal terminal, a first sealing member and a housing as claimed in claim 1 or 2, the relay body comprises a coil assembly, the housing accommodates the relay body, the signal terminal is electrically connected with the coil assembly and extends out of the housing through the first cover, the first sealing member is accommodated in the sealing cavity, the first sealing member is a shaped solid sealing member or is formed by solidification of the sealing material injected into the sealing cavity.

12. A relay characterized by It comprises a first sealing member and a housing as claimed in claim 9, the first sealing member is accommodated in the sealing cavity and the second groove, the first sealing member is formed by solidification of the sealing material injected into the sealing cavity and the second groove.

13. A relay characterized by comprising: It comprises a first sealing member, a second sealing member and a housing as claimed in claim 10, the first sealing member is accommodated in the sealing cavity and the second groove, the first sealing member is formed by solidification of the sealing material injected into the sealing cavity and the second groove, the second sealing member is accommodated in the first groove, the second sealing member is formed by solidification of the sealing material injected into the first groove.

14. A relay as described in claim 12 or 13, characterized in that, It further comprises a relay body, a signal terminal and a load terminal; the relay body is accommodated in the accommodating cavity and comprises a magnetic circuit part and a contact part, the magnetic circuit part comprises a coil assembly; the signal terminal is electrically connected with the coil assembly and extends out of the housing through the first cover; the load terminal is electrically connected with the contact part, the load terminal is fixed relative to the housing and extends out of the housing; the second cover and the housing cooperate to form a via along the second direction, the second groove is arranged around and adjacent to the via, the load terminal is provided with a first arm and a second arm which are integrally connected with each other, the first arm extends out of the housing through the via, the second arm covers part of the second groove, the second arm is provided with a second injection port, the second injection port is adapted to inject the sealing material into the part of the second groove covered by the second arm along the second direction.

15. A method for sealing a housing as claimed in any one of claims 6 to 8, comprising: Step 1: injecting the sealing material into the sealing cavity from the first injection port along the second direction and solidifying the sealing material; Step 2: turning over the intermediate body obtained from the previous step; Step 3: injecting the sealing material into the first groove from the first slot opening away from the second direction until it flows to the first sealing member; The order of the steps is that Step 1 precedes Step 2 and Step 2 precedes Step 3, or that Step 3 precedes Step 2 and Step 2 precedes Step 1.

Images