A mounting structure for a normally open static spring terminal of a relay

Abstract

The invention discloses a mounting structure of a normally open static spring terminal of a relay, comprising a normally open static spring terminal, a relay base and a cover shell, wherein the normally open static spring terminal comprises a contact mounting portion, wherein the lower end of the contact mounting portion is horizontally bent backward to form a lower support portion, the rear end of the lower support portion is vertically bent downward to form a lower lead-out end, the upper end of the contact mounting portion is horizontally bent backward to form an upper support portion, and the rear end of the upper support portion is vertically bent upward to form an upper lead-out end; an L-shaped slot is arranged on the side of the relay base, wherein the L-shaped slot comprises a horizontal plug-in portion and a vertical plug-in portion, the front end of the horizontal plug-in portion is connected to the lower end of the vertical plug-in portion, the rear end of the horizontal plug-in portion is provided with a lower foot position opening that is through-through and matches the lower lead-out end, and an upper foot position opening is arranged on the cover shell. The advantage is that the above structure can not only meet the foot position setting requirements of the lower lead-out end, but also effectively avoid the influence on the coil installation space, thereby making the relay have better suction characteristics.

Description

Technical Field

[0001] The invention relates to a relay, in particular to a mounting structure of a normally open static spring terminal of a relay. Background Art

[0002] Relay is a widely used electronic component, which is applied in the fields of household appliances, automobiles, industrial control, power systems, communication devices, etc. With the development of society, the use of relays is becoming more and more extensive, the types are increasing, and the functions and structures are also different. The normally open static spring terminal in the existing relay is usually a vertical sheet structure, which is installed on the base of the relay by direct plugging from top to bottom. Due to different usage methods, the lead-out ends of the normally open static spring terminal in some relays are divided into lower lead-out ends and upper lead-out ends. Since the product characteristics have requirements on the pitch of the lower lead-out ends and the upper lead-out ends, the direct plug-in installation structure will affect the space for placing the coil at the back, resulting in a smaller space for installing the coil. This requires the coil to be wound less during design, which affects the suction characteristics of the relay. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a mounting structure for a normally open static spring terminal of a relay, which can effectively avoid the impact on the coil installation space to ensure that the relay has good suction characteristics.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A mounting structure for a normally open static spring terminal of a relay, comprising a normally open static spring terminal, a relay base for mounting the normally open static spring terminal, and a cover shell arranged on the relay base;

[0006] The normally open static spring terminal comprises a contact mounting portion arranged vertically, the lower end of the contact mounting portion is horizontally bent backward to form a lower support portion, the rear end of the lower support portion is vertically bent downward to form a lower lead-out end, the upper end of the contact mounting portion is horizontally bent backward to form an upper support portion, and the rear end of the upper support portion is vertically bent upward to form an upper lead-out end;

[0007] The side of the relay base is provided with an L-shaped slot for the normally open static spring terminal to be inserted and installed from the side, the L-shaped slot includes a horizontal plug-in portion matched with the lower support portion and a vertical plug-in portion with an upper opening matched with the contact installation portion, the front end of the horizontal plug-in portion is connected with the lower end of the vertical plug-in portion, the rear end of the horizontal plug-in portion is provided with a lower foot position opening that passes through from top to bottom and matches with the lower lead-out end, and the cover shell is provided with an upper foot position opening that passes through from top to bottom and allows the upper lead-out end to extend upward for installation;

[0008] After the installation is completed, the lower support portion is inserted and installed in the horizontal plug-in portion, the contact installation portion is inserted and installed in the vertical plug-in portion, the upper portion of the lower lead-out end is located in the lower foot position opening, and the lower end of the lower lead-out end extends downward from the relay base through the lower foot position opening, and the upper lead-out end extends through the upper foot position opening and is arranged on the outside of the cover.

[0009] The relay base includes a bottom plate, a coil box with an upper opening for installing the coil is arranged on the bottom plate, the horizontal plug-in portion is located between the bottom of the coil box and the bottom plate, the vertical plug-in portion is located in front of the coil box, and the upper support portion is located above the coil box. The installation space is reasonably utilized to effectively avoid the installation of the normally open static spring terminal affecting the safety space of the coil.

[0010] An isolation cover is provided between the upper support part and the coil box to isolate the upper support part from the armature installed in the relay. The isolation cover isolates the upper support part from the armature installed in the relay, increases the creepage distance, and improves the safety of use.

[0011] The isolation cover includes a horizontally arranged isolation plate, the front end of the isolation plate is vertically bent downward to form a front limiting mounting wall, the rear end of the isolation plate is vertically bent downward to form a rear positioning mounting wall, the front limiting mounting wall is hooked on the front surrounding wall of the coil box; a limiting portion is extended on the front surrounding wall, and the inner side wall of the isolation plate is abutted against the side of the limiting portion; a positioning groove matching the rear positioning mounting wall is arranged on the side surrounding wall of the corresponding position of the coil box, the rear positioning mounting wall is embedded in the positioning groove, and the upper support portion is arranged on the isolation plate. The above isolation cover has a simple structure, and the stable positioning and installation of the isolation cover is achieved by the front limiting mounting wall being hooked on the front surrounding wall of the coil box, the rear positioning mounting wall being embedded in the positioning groove, and the inner side wall of the isolation plate being abutted against the side of the limiting portion; the isolation plate mainly plays the role of isolating between the armature installed in the coil box and the upper support portion.

[0012] The isolation plate is provided with a downwardly recessed positioning groove, and the upper support part is embedded in the positioning groove, so as to provide a stable installation position for the upper support part.

[0013] An isolation protrusion is protruded upward on the isolation plate, and the isolation protrusion is located on the inner side of the positioning groove, and the inner side of the isolation protrusion is extended inwardly and arranged behind the limiting part, and the upper lead-out end is extended inwardly to form an extension end, and the extension end is arranged on the isolation protrusion, and the isolation protrusion is embedded in the upper foot position. The isolation protrusion plays a further isolation role between the armature and the normally open static spring terminal, effectively increases the creepage distance, and ensures the safe and stable use of the relay.

[0014] A positioning wall is protruded on the front surrounding wall of the coil box, and a vertical limiting wall parallel to the positioning wall is provided on the bottom plate. The limiting wall is arranged in front of the positioning wall, and the limiting wall is connected to the inner end of the positioning wall through a connecting wall. The vertical plug-in portion is formed between the limiting wall, the positioning wall and the connecting wall. The installation space for inserting the contact installation part is formed by the limiting wall, the positioning wall and the connecting wall, which provides a stable installation and positioning for the contact installation part.

[0015] The connecting wall is provided with a positioning hole that passes through the left and right sides, and the inner side wall of the contact installation portion is provided with a positioning column that matches the positioning hole; after installation, the positioning column is inserted into the positioning hole. The positioning column and the positioning hole provide a more stable installation positioning for the normally open static spring terminal.

[0016] The upper and lower end surfaces of the positioning column are respectively provided with barbs, the upper end surface of the barbs on the upper end surface of the positioning column is an inclined end surface inclined downward along the installation direction of the normally open static spring terminal, and the lower end surface of the barbs on the lower end surface of the positioning column is an inclined end surface inclined upward along the installation direction of the normally open static spring terminal. By providing the barbs on the positioning column, the positioning column can be inserted and installed into the positioning hole with relatively little effort during installation. Once the installation is completed, the barbs can ensure that the positioning column cannot be easily disengaged from the positioning hole, thereby ensuring the stable installation of the normally open static spring terminal.

[0017] The front end face or the rear end face of the contact mounting portion is convexly provided with a first positioning convex buckle. After installation, the first positioning convex buckle is set against the inner wall of the vertical plug-in portion to realize that the contact mounting portion is tightly fitted in the vertical plug-in portion; the upper end face or the lower end face of the lower support portion is convexly provided with a second positioning convex buckle. After installation, the second positioning convex buckle is set against the inner wall of the horizontal plug-in portion to realize that the upper support portion is tightly fitted in the horizontal plug-in portion. The first positioning convex buckle is set against the vertical plug-in portion to realize that the contact mounting portion can be tightly fitted and stably installed in the vertical plug-in portion, and the second positioning convex buckle is set against the horizontal plug-in portion to realize that the support portion can be tightly fitted and stably installed in the vertical plug-in portion.

[0018] Compared with the prior art, the advantages of the present invention are: the normally open static spring terminal is composed of a vertical contact mounting portion, a horizontal supporting portion and a vertical lower lead-out terminal, and a slot is provided on the relay base which matches the shape of the normally open static spring terminal so that the normally open static spring terminal can be inserted and installed from the side. The normally open static spring terminal is inserted and installed from the side of the relay base through the slot which matches the normally open static spring terminal, which can not only meet the pin position setting requirements of the lower lead-out terminal, but also effectively avoid the impact on the coil installation space, thereby making the relay have better suction characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the normally open static spring terminal of the present invention being installed in cooperation with the cover shell;

[0021] Figure 3 It is a schematic diagram of the first three-dimensional structure of the normally open static spring terminal in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the normally open static spring terminal of the present invention installed on the relay base;

[0023] Figure 5 It is a cross-sectional structural schematic diagram of the normally open static spring terminal of the present invention installed on the relay base;

[0024] Figure 6 It is a schematic diagram of the structure in which the isolation cover is installed on the relay base in cooperation with the present invention;

[0025] Figure 7 It is a structural schematic diagram of the relay base in the present invention;

[0026] Figure 8 It is a cross-sectional structural schematic diagram of the relay base in the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the cover shell in the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings.

[0029] As shown in the figure, a mounting structure of a normally open static spring terminal of a relay comprises a normally open static spring terminal 1, a relay base 2 for mounting the normally open static spring terminal 1, and a cover 3 provided on the relay base 2;

[0030] The normally open static spring terminal 1 comprises a contact mounting portion 101 arranged vertically, the lower end of the contact mounting portion 101 is horizontally bent backward to form a lower support portion 102, the rear end of the lower support portion 102 is vertically bent downward to form a lower lead-out end 103, the upper end of the contact mounting portion 101 is horizontally bent backward to form an upper support portion 104, the rear end of the upper support portion 104 is vertically bent upward to form an upper lead-out end 105;

[0031] The side of the relay base 2 is provided with an L-shaped slot for the normally open static spring terminal 1 to be inserted and installed from the side, and the L-shaped slot includes a horizontal plug-in portion 201 matched with the lower support portion 102 and a vertical plug-in portion 202 with an upper opening matched with the contact mounting portion 101, the front end of the horizontal plug-in portion 201 is connected with the lower end of the vertical plug-in portion 202, and the rear end of the horizontal plug-in portion 201 is provided with a lower foot position opening 203 that is through-through and matches the lower lead-out terminal 103, and the cover 3 is provided with an upper foot position opening 301 that is through-through and allows the upper lead-out terminal 105 to extend upward for installation;

[0032] After the installation is completed, the lower support portion 102 is inserted and installed in the horizontal plug-in portion 201, the contact mounting portion 101 is inserted and installed in the vertical plug-in portion 202, the upper portion of the lower lead-out terminal 103 is located in the lower foot opening 203, and the lower end of the lower lead-out terminal 103 extends downwardly out of the relay base 2 through the lower foot opening 203, and the upper lead-out terminal 105 extends through the upper foot opening 301 and is set outside the cover 3.

[0033] In this specific embodiment, the relay base 2 includes a bottom plate 21, a coil box 22 with an upper opening for installing the coil is provided on the bottom plate 21, the horizontal plug-in portion 201 is located between the bottom of the coil box 22 and the bottom plate 21, the vertical plug-in portion 202 is located in front of the coil box 22, and the upper support portion 104 is located above the coil box 22. The installation space is reasonably utilized, and the installation of the normally open static spring terminal 1 is effectively prevented from affecting the safety space of the coil.

[0034] In this specific embodiment, an isolation cover 4 is provided between the upper support portion 104 and the coil box 22 to isolate the upper support portion 104 from the armature installed in the relay. The isolation cover 4 isolates the upper support portion 104 from the armature installed in the relay, increases the creepage distance, and improves the safety of use.

[0035] In this specific embodiment, the isolation cover 4 includes a horizontally arranged isolation plate 401, the front end of the isolation plate 401 is vertically bent downward to form a front limiting mounting wall 402, and the rear end of the isolation plate 401 is vertically bent downward to form a rear positioning mounting wall 403, and the front limiting mounting wall 402 is hooked on the front surrounding wall 221 of the coil box 22; a limiting portion 222 is extended on the front surrounding wall 221, and the inner side wall of the isolation plate 401 is abutted against the side of the limiting portion 222; a positioning groove 224 matching the rear positioning mounting wall 403 is provided on the side surrounding wall 223 at the corresponding position of the coil box 22, and the rear positioning mounting wall 403 is embedded in the positioning groove 224, and the upper support portion 104 is provided on the isolation plate 401. The above-mentioned isolation cover 4 has a simple structure. The front limiting mounting wall 402 is hooked on the front surrounding wall 221 of the coil box 22, the rear positioning mounting wall 403 is embedded in the positioning groove 224, and the inner side wall of the isolation plate 401 is against the side of the limiting part 222 to achieve stable positioning and installation of the isolation cover 4; the isolation plate 401 mainly plays the role of isolating the armature installed in the coil box 22 and the upper support part 104.

[0036] In this specific embodiment, a downwardly recessed positioning groove 41 is provided on the isolation plate 401, and the upper support portion 104 is embedded in the positioning groove 41. The positioning groove 41 provides a stable installation position for the upper support portion 104.

[0037] In this specific embodiment, an isolation protrusion 42 is provided on the isolation plate 401 and protrudes upward. The isolation protrusion 42 is located on the inner side of the positioning groove 41, and the inner side of the isolation protrusion 42 is extended inwardly and arranged behind the limiting portion 222. The upper lead-out end 105 extends inwardly to form an extension end 1051, and the extension end 1051 is arranged on the isolation protrusion 42. The isolation protrusion 42 is embedded in the upper foot opening 301. The isolation protrusion 42 further isolates the armature and the normally open static spring terminal 1, effectively increases the creepage distance, and ensures the safe and stable use of the relay.

[0038] In this specific embodiment, a positioning wall 225 is protruded on the front surrounding wall 221 of the coil box 22, and a vertical limiting wall 226 parallel to the positioning wall 225 is provided on the bottom plate 21. The limiting wall 226 is arranged in front of the positioning wall 225, and the limiting wall 226 is connected to the inner end of the positioning wall 225 through a connecting wall 227. A vertical plug-in portion 202 is formed between the limiting wall 226, the positioning wall 225 and the connecting wall 227. The limiting wall 226, the positioning wall 225 and the connecting wall 227 form an installation space for inserting the contact installation portion 101, which provides a stable installation and positioning for the contact installation portion 101.

[0039] In this specific embodiment, a positioning hole 228 is provided on the connecting wall 227 and passes through the left and right sides. A positioning column 1011 is provided on the inner side wall of the contact mounting portion 101 and matches the positioning hole 228. After installation, the positioning column 1011 is inserted into the positioning hole 228. The positioning column 1011 and the positioning hole 228 provide a more stable installation position for the normally open static spring terminal 1.

[0040] In this specific embodiment, the upper and lower end surfaces of the positioning column 1011 are respectively provided with barbs 1012, the upper end surface of the barbs 1012 located on the upper end surface of the positioning column 1011 is an inclined end surface inclined downward along the installation direction of the normally open static spring terminal 1, and the lower end surface of the barbs 1012 located on the lower end surface of the positioning column 1011 is an inclined end surface inclined upward along the installation direction of the normally open static spring terminal 1. By providing the barbs 1012 on the positioning column 1011, the positioning column 1011 can be inserted and installed into the positioning hole 228 with relatively little effort during installation. Once the installation is completed, the barbs 1012 can ensure that the positioning column 1011 cannot be easily disengaged from the positioning hole 228, thereby ensuring the stable installation of the normally open static spring terminal 1.

[0041] In this specific embodiment, the front end face or the rear end face of the contact mounting portion 101 is protruded with a first positioning convex buckle 1013. After installation, the first positioning convex buckle 1013 is set against the inner wall of the vertical plug-in portion 202 to achieve the contact mounting portion 101 to be tightly fitted in the vertical plug-in portion 202; the upper end face or the lower end face of the lower support portion 102 is protruded with a second positioning convex buckle 1014. After installation, the second positioning convex buckle 1014 is set against the inner wall of the horizontal plug-in portion 201 to achieve the upper support portion 104 to be tightly fitted in the horizontal plug-in portion 201. The first positioning convex buckle 1013 is set against the vertical plug-in portion 202 to achieve the contact mounting portion 101 to be tightly fitted and stably installed in the vertical plug-in portion 202, and the second positioning convex buckle 1014 is set against the horizontal plug-in portion 201 to achieve the upper support portion 104 to be tightly fitted and stably installed in the vertical plug-in portion 202.

Claims

1. A mounting structure for a normally open static spring terminal of a relay, comprising a normally open static spring terminal, a relay base for mounting the normally open static spring terminal, and a cover shell disposed on the relay base; Features The normally open static spring terminal comprises a contact mounting portion arranged vertically, the lower end of the contact mounting portion is horizontally bent backward to form a lower support portion, the rear end of the lower support portion is vertically bent downward to form a lower lead-out end, the upper end of the contact mounting portion is horizontally bent backward to form an upper support portion, and the rear end of the upper support portion is vertically bent upward to form an upper lead-out end; The side of the relay base is provided with an L-shaped slot for the normally open static spring terminal to be inserted and installed from the side, the L-shaped slot includes a horizontal plug-in portion matched with the lower support portion and a vertical plug-in portion with an upper opening matched with the contact installation portion, the front end of the horizontal plug-in portion is connected with the lower end of the vertical plug-in portion, the rear end of the horizontal plug-in portion is provided with a lower foot position opening that passes through from top to bottom and matches with the lower lead-out end, and the cover shell is provided with an upper foot position opening that passes through from top to bottom and allows the upper lead-out end to extend upward for installation; After installation, the lower support portion is inserted and installed in the horizontal plug-in portion, the contact installation portion is inserted and installed in the vertical plug-in portion, the upper portion of the lower lead-out end is located in the lower foot opening, and the lower end of the lower lead-out end extends downwardly out of the relay base through the lower foot opening, and the upper lead-out end extends through the upper foot opening and is arranged outside the housing; The relay base comprises a bottom plate, a coil box with an upper opening for mounting the coil is arranged on the bottom plate, the horizontal plug-in portion is located between the bottom of the coil box and the bottom plate, the vertical plug-in portion is located in front of the coil box, and the upper support portion is located above the coil box; A positioning wall is protruded on the front surrounding wall of the coil box, and a vertical limiting wall parallel to the positioning wall is arranged on the bottom plate. The limiting wall is arranged in front of the positioning wall, and the limiting wall is connected to the inner end of the positioning wall through a connecting wall, and the vertical plug-in portion is formed between the limiting wall, the positioning wall and the connecting wall.

2. The installation structure of the normally open static spring terminal of a relay as claimed in claim 1, characterized in that An isolation cover is arranged between the upper support part and the coil box to isolate the upper support part from the armature installed in the relay.

3. The installation structure of the normally open static spring terminal of a relay as claimed in claim 2, characterized in that The isolation cover includes a horizontally arranged isolation plate, the front end of the isolation plate is vertically bent downward to form a front limit mounting wall, the rear end of the isolation plate is vertically bent downward to form a rear positioning mounting wall, the front limit mounting wall is hooked on the front surrounding wall of the coil box; a limiting portion is extended on the front surrounding wall, and the inner side wall of the isolation plate is abutted against the side of the limiting portion; a positioning groove matching the rear positioning mounting wall is provided on the side surrounding wall at the corresponding position of the coil box, the rear positioning mounting wall is embedded in the positioning groove, and the upper support portion is provided on the isolation plate.

4. The installation structure of the normally open static spring terminal of a relay as claimed in claim 3, characterized in that The isolation plate is provided with a downwardly recessed positioning groove, and the upper support portion is embedded in the positioning groove.

5. The installation structure of the normally open static spring terminal of a relay as claimed in claim 4, characterized in that An isolation protrusion is provided on the isolation plate and protrudes upward. The isolation protrusion is located on the inner side of the positioning groove, and the inner side of the isolation protrusion extends inwardly and is arranged behind the limiting portion. The upper lead-out end extends inwardly to form an extended end, and the extended end is arranged on the isolation protrusion. The isolation protrusion is embedded in the upper foot position.

6. The installation structure of the normally open static spring terminal of a relay as claimed in claim 1, characterized in that The connecting wall is provided with a positioning hole which passes through the left and right sides, and the inner side wall of the contact installation part is provided with a positioning column which matches with the positioning hole; after the installation is completed, the positioning column is inserted into the positioning hole.

7. The installation structure of the normally open static spring terminal of a relay as claimed in claim 6, characterized in that The upper end face and the lower end face of the positioning column are respectively provided with barbs, the upper end face of the barb located on the upper end face of the positioning column is an inclined end face inclined downward along the installation direction of the normally open static spring terminal, and the lower end face of the barb located on the lower end face of the positioning column is an inclined end face inclined upward along the installation direction of the normally open static spring terminal.

8. The installation structure of the normally open static spring terminal of a relay as claimed in claim 1, characterized in that The front end face or the rear end face of the contact mounting portion is protruded with a first positioning convex buckle. After the installation is completed, the first positioning convex buckle is abutted against the inner wall of the vertical plug-in portion to realize the tight fit of the contact mounting portion in the vertical plug-in portion; the upper end face or the lower end face of the lower support portion is protruded with a second positioning convex buckle. After the installation is completed, the second positioning convex buckle is abutted against the inner wall of the horizontal plug-in portion to realize the tight fit of the upper support portion in the horizontal plug-in portion.

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