A high-voltage DC relay micro switch installation structure

Abstract

The present invention discloses a high-voltage DC relay micro switch installation structure, comprising an inner support cover of a high-voltage DC relay, a support platform for a micro switch provided on the outside of the inner support cover, the support platform provided with pin holes for the pins of the micro switch to pass upward; two limiters provided on the bottom surface of the support platform, the two limiters being arranged opposite to each other and allowing the micro switch to be loaded upward between the two limiters; and a fixing member provided with a positioning protrusion that can be plugged into and matched with a positioning hole provided on the side of the micro switch, the fixing member being connected to the two limiters. The present invention adopts the two limiters and the fixing member to limit the installation of the micro switch, which is not only convenient to install and will not damage the magnetic steel, but also will not generate foreign matter such as welding slag, rosin, plastic chips, etc. in the inner support cover, and the micro switch can be installed very securely, without the risk of the micro switch falling under force.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage direct current relays, and in particular to a micro switch mounting structure for a high-voltage direct current relay. Background Art

[0002] The high voltage DC relay of the prior art is as follows Figure 1 As described above, a direct-acting magnetic circuit structure is adopted. The push rod 8' of the pushing part of this DC relay is fixed to the moving iron core 5'. When the coil 6' is energized, the moving iron core 5' drives the push rod 8' to move. A moving contact piece 9' is installed at one end of the push rod 8'. The push rod 8' drives the moving contact piece 9' to move, so that the moving contact piece 9' contacts the static contact fixed at the corresponding position; when the coil is de-energized, the push rod 8' and the moving iron core 5' are reset under the drive of the reaction spring 4', so that the moving contact piece 9' is separated from the static contact, thereby achieving the purpose of connecting and disconnecting the circuit. This type of high-voltage DC relay using a direct-acting magnetic circuit structure in the prior art is also equipped with a micro switch 2' as an auxiliary contact, and a toggle block 3' is fixedly connected to the moving contact piece 9'. When the relay is actuated, the moving contact piece 9' moves toward the static contact, driving the toggle block 3' to move, so that the movable arm of the micro switch 2' is triggered and turned on, which is equivalent to the auxiliary contact being turned on; when the relay is released, the moving contact piece 9' moves away from the static contact, driving the toggle block 3' to move, leaving the movable arm of the micro switch 2', so that the micro switch 2' is turned off, which is equivalent to the auxiliary contact being separated.

[0003] The conventional installation method of the micro switch 2' of the high voltage DC relay is to weld the pins or to tighten the screws to install it on the inner support cover 1'. The welding method will produce foreign matter such as welding slag and rosin, which will affect the function of the high voltage DC relay; the screw locking method has low installation efficiency and the risk of foreign matter such as plastic chips; at the same time, because the inner cavity is equipped with a magnetic steel ( Figure 1 The number 7' in the middle indicates the position of the magnetic steel). Screw installation may damage the magnetic steel and affect the arc extinguishing system of the product. Summary of the Invention

[0004] The present invention provides a high-voltage direct current relay micro switch installation structure, which overcomes the shortcomings of the high-voltage direct current relay micro switch installation method in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a high-voltage DC relay micro switch installation structure, including an inner support cover of the high-voltage DC relay, a support platform for the micro switch is provided on the outside of the inner support cover, and the support platform is provided with pin holes for the pins of the micro switch to pass upward; two limit members are provided on the bottom surface of the support platform, and the two limit members are arranged opposite to each other and allow the micro switch to be upwardly installed between the two limit members; it also includes a fixing member, which is provided with a positioning protrusion that can be plugged into the positioning hole provided on the side of the micro switch, and the fixing member is connected to the two limit members.

[0006] Furthermore, the fixing member is made of insulating material and covers the exposed portion of the micro switch pin.

[0007] Furthermore, the fixing member is engaged with the two limiting members.

[0008] Furthermore, the fixing member includes a cover plate and two arms, one end surface of the cover plate is provided with the positioning protrusion, and the two arms are arranged at the left and right ends of the cover plate, and both extend toward the side where the positioning protrusion is located; the two arms are engaged with the relative outer sides of the two limiting members, and are snap-fitted with the two limiting members one by one.

[0009] Furthermore, the two arms are respectively provided with hooks, and the opposite outer sides of the two limiting members are respectively provided with bosses or slots, which are engaged with the corresponding hooks one by one.

[0010] Furthermore, the distance between the two supporting arms relative to the inner side surface is matched with the distance between the two limiting members relative to the outer side surface, or the two supporting arms and the two limiting members are in interference fit.

[0011] Furthermore, the two limiting members are respectively elastic buckles with barbs at the bottom ends, and the barbs of the two elastic buckles are arranged facing each other and are clamped on the bottom surface of the micro switch.

[0012] Furthermore, the two limiting members are elastic sheets respectively, and the two elastic sheets clamp the micro switch between the two elastic sheets.

[0013] Furthermore, the positioning protrusion is a positioning column.

[0014] Furthermore, there are a plurality of positioning protrusions, which correspond one-to-one to a plurality of positioning holes provided on the side surface of the micro switch.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses the two limit members and the fixing member to limit the installation of the micro switch, which is not only convenient for installation and will not damage the magnetic steel, but also will not produce welding slag, rosin, plastic chips and other foreign matter in the inner support cover, and also makes the micro switch very securely installed and will not fall when subjected to force.

[0017] 2. The fixing member is made of insulating material and can shield the exposed portion of the micro switch pin, thereby avoiding the risk of high voltage electricity breaking through the micro switch pin.

[0018] 3. The fixing member and the two limiting members are preferably matched in a snap-fit ​​manner, so that the micro switch does not require any tools when installed, making the installation more convenient and more efficient.

[0019] 4. The fixing member preferably includes the cover plate and two arms, and has the characteristics of simple and compact structure, easy production and assembly, etc.

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the high-voltage DC relay micro switch installation structure of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of a high voltage DC relay in the prior art;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 It is a front view of the present invention;

[0024] Figure 4 yes Figure 3 The enlarged schematic diagram of part I;

[0025] Figure 5 It is a left side view of the present invention;

[0026] Figure 6 yes Figure 5 An enlarged schematic diagram of part II;

[0027] Figure 7 It is a structural schematic diagram of the fixing member of the present invention;

[0028] Figure 8 This is a schematic diagram of the cooperation between the fixing part and the micro switch of the present invention Figure 1 ;

[0029] Figure 9 This is a schematic diagram of the cooperation between the fixing part and the micro switch of the present invention Figure 2 ;

[0030] Figure 10 This is a schematic diagram of the cooperation between the two limit members and the micro switch of the present invention Figure 1 ;

[0031] Figure 11 This is a schematic diagram of the cooperation between the two limit members and the micro switch of the present invention Figure 2 . DETAILED DESCRIPTION

[0032] For examples, see Figure 2-Figure 11 As shown, a high-voltage DC relay microswitch mounting structure of the present invention includes an inner support cover 1 of a high-voltage DC relay, a support platform 11 for a microswitch 2 is provided on the outside of the inner support cover 1, and the support platform 11 is provided with a pin hole for the pin 21 of the microswitch 2 to pass upward; the bottom surface of the support platform 11 is provided with two limit members, which are arranged opposite to each other and allow the microswitch 2 to be installed upward between the two limit members. In this embodiment, the two limit members are elastic clips 3 with barbs 31 at the bottom end, and the barbs 31 of the two elastic clips 3 are arranged facing each other and are stuck on the bottom surface of the microswitch 2. The present invention also includes a fixing member 4, which is provided with a positioning protrusion that can be plugged into the positioning hole 22 provided on the side of the microswitch 2. The fixing member 4 is connected to the two limit members (i.e., the two elastic clips 3). The fixing member 4 is made of insulating material and blocks the exposed part of the pin of the microswitch 2.

[0033] In this embodiment, the positioning protrusion is a positioning column 411, but is not limited thereto. For example, the positioning protrusion can also be a positioning convex bract (non-columnar). There are two positioning columns 411, which correspond one to one with the two positioning holes 22 provided on the side of the micro switch 2.

[0034] In this embodiment, the fixing member 4 engages with the two limiting members (i.e., the two elastic buckles 3). The fixing member 4 specifically comprises a cover plate 41 and two arms 42. The cover plate 41 has a positioning protrusion (i.e., a positioning column 411) on one end surface. The two arms 42 are disposed on the left and right ends of the cover plate 41 and extend toward the side where the positioning protrusion is located. The two arms 42 engage with the opposite outer sides of the two limiting members and engage with them one by one. The fixing member 4 utilizes its cover plate 41 to shield the exposed pin portion 211 of the micro switch 2.

[0035] In this embodiment, the two arms 42 are respectively provided with hooks 421, and the opposite outer sides of the two limiting members (i.e., the two elastic buckles 3) are respectively provided with bosses 32 (not limited to bosses 32; in other embodiments, the opposite outer sides of the two limiting members are respectively provided with slots), which engage with the corresponding hooks 421 one by one. Specifically, the two limiting members are L-shaped structures, and their horizontal portions are integrally connected to the bottom surface of the support platform 11, and their vertical portions are downward and provided with the bosses 32. There is a certain gap between the vertical portion of the limiting member and the outer side surface of the inner support cover 1 to accommodate the tail end of the arm 42. The hook 421 of the arm 42 is located on the lower side of the tail end of the arm 42 so that it can be hung on the rear side of the boss 32.

[0036] In this embodiment, the two arms 42 form an interference fit with the two limiting members (i.e., the two elastic buckles 3), that is, the distance between the relative inner sides of the two arms 42 is slightly smaller than the distance between the relative outer sides of the two limiting members. Since the fixing member 4 is an insulating plastic member with a certain degree of deformation, it is convenient to achieve an interference fit between the two arms 42 of the fixing member 4 and the two limiting members. The interference fit between the two arms 42 and the two limiting members can make the fixing member 4 and the two limiting members fit more securely and prevent the fixing member 4 from shaking. In addition, the distance between the relative inner sides of the two arms 42 can also be adapted to the distance between the relative outer sides of the two limiting members.

[0037] During installation, first install the micro switch 2 between the two elastic buckles 3 from bottom to top, and at the same time, the pins 21 on the upper surface of the micro switch 2 are passed through the pin holes provided on the support platform 11 one by one. Figure 10 、 Figure 11 As shown. At this time, the barbs 31 at the bottom of the two elastic clips 3 clamp the micro switch 2, and perform preliminary positioning of the micro switch 2. Next, align the two positioning columns 411 of the fixing member 4 with the two positioning holes 22 of the micro switch 2, and press the fixing member 4 in the direction of the two elastic clips 3, so that the fixing member 4 is finally clamped on the two elastic clips 3, and the two positioning columns 411 of the fixing member 4 are inserted into the two positioning holes 22 of the micro switch 2 one by one. At this time, the cover plate 41 of the fixing member 4 is fitted on the outside of the micro switch 2, and the cover plate 41 is in contact with the bottom surface of the support platform 11, as shown. Figure 2 、 Figure 3 As shown, the exposed portion 211 of the micro switch 2 pins is shielded to avoid the risk of high voltage electricity breaking through the pins of the micro switch 2. This is because there are two protrusions 23 on the upper surface of the micro switch 2, which results in a small section of the micro switch 2 pins being exposed outside the inner support cover 1 after the micro switch 2 is installed between the two elastic buckles 3. Figure 11 As shown, the outer layer of the micro switch 2 is an iron cup (such as Figure 1 As shown in the figure, the component indicated by number 10' is the iron cup of the high-voltage DC relay, which is part of the high-voltage electrical system of the relay. If the pins of the micro switch are directly exposed in the iron cup, there is a risk of high voltage electricity breaking through the pins of the micro switch, causing loss of product function.

[0038] The micro switch 2 can be firmly held in the installed position under the cooperation and limitation of the fixing member 4 and the two elastic buckles 3, and even if the two elastic buckles 3 are deformed under force, the micro switch 2 will not be at risk of falling under force.

[0039] The above installation process does not require any tools, is very convenient, will not damage the magnetic steel, and will not produce welding slag, rosin, plastic chips and other foreign matter in the inner support cover 1 and the iron cup of the high-voltage relay.

[0040] In other embodiments, the two limiting members are elastic sheets, respectively, and the two elastic sheets clamp the micro switch between the two elastic sheets.

[0041] The above embodiments are only used to further illustrate a high-voltage DC relay microswitch installation structure of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the fixing parts and limit parts of the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A high-voltage DC relay microswitch mounting structure, comprising an inner support cover of a high-voltage DC relay, a microswitch support platform disposed on the exterior of the inner support cover, and pin holes through which pins of the microswitch can pass upward; characterized in that: Two limit members are fixedly provided on the bottom surface of the support platform, and the two limit members are arranged opposite to each other and allow the micro switch to be installed upward between the two limit members; the two limit members are elastic clips with barbs at the bottom ends, and the barbs of the two elastic clips are arranged facing each other and are clamped on the bottom surface of the micro switch to realize the pre-installation of the micro switch; it also includes a fixing member, which is provided with a positioning protrusion that can be plugged into the positioning hole provided on the side of the micro switch. The fixing member is installed from the side of the micro switch toward the direction of the two limit members, and the fixing member is connected to the two limit members to keep the micro switch in the installation position.

2. The high-voltage DC relay micro switch mounting structure according to claim 1, characterized in that: The fixing piece is made of insulating material and covers the exposed portion of the micro switch pin.

3. The high-voltage DC relay micro switch mounting structure according to claim 1, characterized in that: The fixing member is engaged with the two limiting members.

4. The high-voltage DC relay microswitch mounting structure according to claim 3, characterized in that: The fixing member includes a cover plate and two arms, one end surface of the cover plate is provided with the positioning protrusion, and the two arms are arranged at the left and right ends of the cover plate, and both extend toward the side where the positioning protrusion is located; the two arms are engaged with the relative outer sides of the two limiting members, and are engaged with the two limiting members one by one.

5. The high-voltage DC relay micro switch mounting structure according to claim 4, characterized in that: The two arms are respectively provided with hooks, and the opposite outer sides of the two limiting members are respectively provided with bosses or slots, which are engaged with the corresponding hooks one by one.

6. The high-voltage DC relay micro switch mounting structure according to claim 5, characterized in that: The distance between the two supporting arms and the inner side surfaces matches the distance between the two limiting members and the outer side surfaces, or the two supporting arms and the two limiting members are in interference fit.

7. The high-voltage DC relay micro switch mounting structure according to any one of claims 1 to 6, characterized in that: The two limiting members are respectively elastic sheets, and the two elastic sheets clamp the micro switch between the two elastic sheets.

8. The high-voltage DC relay micro switch mounting structure according to claim 4, characterized in that: The positioning protrusion is a positioning column.

9. The high-voltage DC relay micro switch mounting structure according to any one of claims 1 to 4 or 8, characterized in that: There are a plurality of positioning protrusions, which correspond one to one with a plurality of positioning holes provided on the side of the micro switch.

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