Start control relay

Abstract

A starting control relay belongs to the technical field of relays and comprises a base, a shell, a pushing clamp, an iron core, a coil holder, a coil, a yoke, an armature, a clamp spring, a movable reed, a movable contact, a movable reed leading-out pin, a static reed, a static reed leading-out pin and a static contact. The pushing card is arranged at the front end in the shell in the left-right direction; the right end of the pushing card is provided with an armature connecting groove, and the upper and lower sides of the connecting groove form card edges A respectively. Pushing card clamping grooves are formed in the upper side and the lower side of the front end of the armature respectively, clamping edges B are formed in the front sides and the rear sides of the pushing card clamping grooves respectively, the pushing card clamping grooves in the two sides of the front end of the armature are clamped into the armature connecting grooves in the right end of the pushing card respectively, and the front end of the pushing card is pressed into the armature connecting grooves. The middle part of the pushing card is provided with a movable contact spring plugging hole. A raised head is arranged in the middle of the left end of the pushing clamp; the clamping spring comprises a rear clamping hook, a clamping spring body and a front clamping hook. The utility model has the beneficial effects that the clamp spring is fixed stably, and the assembly structure of the clamp spring is simplified.

Description

Technical Field

[0001] The utility model discloses a relay, in particular to a start-up control relay, belonging to the technical field of relays. Background Art

[0002] The air conditioning compressor relay plays a very important role in the air conditioning system and plays a controlling role in the entire air conditioning system. It converts the control power signal into a high-current on-off signal to control the start and stop of the compressor.

[0003] The armature and yoke of the relay are usually fixed with a retaining spring. The authorization announcement number is CN204809150 U, the application number is 2015206409074, and the utility model name is a small relay. A retaining spring structure is disclosed: the yoke is provided with a retaining spring for limiting the armature, the lower end of the retaining spring is fixedly connected to the yoke, and the upper end of the retaining spring extends out of the yoke and extends away from the yoke. This retaining spring fixing structure is unreasonable, the fixation is not stable, and the product performance is unstable; in addition, the authorization announcement number is CN2870147Y, the application number is 2006201017693, and the utility model name is a small high-power electromagnetic relay. A retaining spring structure is disclosed: the retaining spring is installed above the armature and is connected to the guide grooves on both sides of the end face of the skeleton with convex buckles on both sides. This retaining spring assembly structure needs to be designed to be fixed to the guide grooves on both sides of the skeleton, and the structure is complicated and inconvenient to manufacture.

[0004] During the startup phase, the relay protects the compressor by cutting off the high-voltage line of the compressor, so the design of the contact structure is related to the life of the relay. For example, the patent with application publication number CN 102969203 A, application number 2012104630523, and utility model name "A set of square TO-5 sealed electromagnetic relays with switching contacts" discloses a contact structure of a relay: the moving reed is welded to the connecting rod of the base, and the restoring reed is welded to the corresponding position of the base. When the coil is excited, the armature is flat with the pole surface of the yoke under the action of electromagnetic attraction, so that the moving reed leaves the upper contact and is converted to contact with the lower contact, thereby disconnecting the normally closed contact circuit and connecting the normally open contact circuit; when the coil is de-excited, the restoring force of the restoring reed and the moving reed causes the armature to return to the initial position, so that the moving reed leaves the lower contact and returns to contact with the upper contact, and the normally closed contact circuit is connected. There is no mechanical linkage between the armature and the moving reed and the restoring reed in this contact structure, and it is difficult to force the closed normally open contacts to open by the restoring force of the moving reed and the restoring reed. After the normally open contacts are closed, adhesion will occur, resulting in overcurrent and burning of the compressor. Utility Model Content

[0005] The purpose of the utility model is to provide a starting control relay to address the defects in the prior art of the above-mentioned air-conditioning compressor relay, such as unstable fixing of the retaining spring, complex retaining spring assembly structure, and adhesion and overcurrent after the normally open contacts are closed. The utility model can achieve the purpose of stable fixing of the retaining spring, simplified retaining spring assembly structure, and complete avoidance of adhesion and overcurrent after the normally open contacts are closed.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a starting control relay, including a base, a shell arranged on the base, and a magnetic circuit assembly, a contact assembly and a push card arranged between the base and the shell; the magnetic circuit assembly is arranged on the right side above the base, and the magnetic circuit assembly includes an iron core, a wire frame, a coil, a yoke, an armature and a retaining spring, the wire frame is fixedly arranged on the base, on the right side, the coil is arranged on the wire frame, and the axis of the coil is in the front-to-back direction; the iron core is inserted into the coil in the front-to-back direction, the yoke is L-shaped, one side of the yoke is riveted to the tail end of the iron core, and the other side of the yoke is arranged on the left side of the coil along the axis of the coil; the armature is arranged on the left side of the yoke, and the contact assembly is arranged on the left side of the armature; the contact assembly includes a moving spring sheet, a moving contact, a moving spring lead-out pin, a static spring sheet, a static spring lead-out pin and a static contact; the retaining spring is arranged on one side of the armature to fix the armature;

[0007] The push card is a flat plate structure, and is arranged at the front end of the housing in the left and right directions; the right end of the push card is provided with an armature connecting groove, and the upper and lower sides of the connecting groove each form a card edge A; the upper and lower sides of the front end of the armature are respectively provided with a push card connecting groove, and the front and rear sides of the push card connecting groove each form a card edge B, and the push card connecting grooves on both sides of the front end of the armature are respectively inserted into the armature connecting groove at the right end of the push card, so that the front end of the push card is pressed into the armature connecting groove, and the right end of the push card and the front end of the armature are tightly matched with each other; the middle part of the push card is provided with a movable spring piece insertion hole, and the front end of the movable spring piece is inserted into the movable spring piece insertion hole, and when the push card moves to the left, there is enough travel to drive the movable spring piece to move;

[0008] A convex head is arranged at the middle of the left end of the push card, and also includes a restoring spring and a restoring spring seat. The restoring spring seat is fixedly arranged on the left rear of the base, the rear end of the restoring spring is arranged on the restoring spring seat, and the front end of the restoring spring is arranged with a convex head plug hole. The convex head is inserted into the convex head plug hole and is tightly matched with each other, so that the front end of the restoring spring, the front end of the moving spring and the front end of the armature are connected together through the push card; when there is electromagnetic excitation after power is turned on, the electromagnetic suction force is greater than the reaction force of the restoring spring, and the contact is closed. When there is no electromagnetic excitation after power is turned off, the contact is disconnected due to the reaction force of the restoring spring, and the reaction force of the restoring spring is used to effectively avoid the adhesion failure of the contact under high current conditions;

[0009] The retaining spring includes a rear hook, a retaining spring body and a front hook; a rear hook insertion hole is provided in the middle of the bending part of the armature, a front hook insertion hole is provided at the lower rear end of the yoke, the rear hook of the retaining spring is plug-assembled and connected with the rear hook, and the rear front hook of the retaining spring is plug-assembled and connected with the front hook; the retaining spring is used to fix the armature and the yoke to form a magnetic circuit, thereby reducing the riveting process and improving the product performance stability and assembly efficiency.

[0010] The load capacity of the moving contact and the static contact reaches 30A-250VAC, and the service life is 100,000 times.

[0011] One end of the moving spring piece is connected to the moving spring lead-out pin and fixed on the frame, and the middle part of the moving spring piece is riveted with a moving contact; the moving spring lead-out pin is arranged at the rear side below the base, and the static spring lead-out pin is arranged at the front side below the base.

[0012] The clamping edges B on both sides of the clamping groove are bent to the left, and the clamping edges B are tightly attached to the front surface of the push clamp on the inner side of the armature connection groove, so that the armature is firmly connected to the push clamp through the clamping edges B.

[0013] A positioning groove is arranged on the right side of the yoke, and one side of the retaining spring body is clamped in the positioning groove, which plays a role in positioning the yoke, so that the retaining spring can stably fix the yoke.

[0014] The push card is a ceramic push card made of ceramic.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The traditional riveting process is changed to a process of fixing the armature by assembling a circlip, which can achieve a stable fixing of the circlip, stable product performance, a simplified circlip assembly structure, and convenient manufacturing. In addition, there is a mechanical linkage between the armature and the moving spring and the restoring spring of the contact structure, which can completely avoid adhesion and overcurrent after the normally open contact is closed;

[0017] (2) Use a ceramic push card to connect the restoring spring, the moving spring and the armature together. When power is turned on, the electromagnetic attraction is greater than the reaction force of the restoring spring and the contacts are closed. After power is turned off, the reaction force of the restoring spring is used to disconnect the contacts. This can effectively prevent the contacts from sticking and failing under high current conditions. The contact load capacity reaches 30A 250VAC and the service life is 100,000 times, thus meeting market demand.

[0018] Therefore, the utility model is a relay with high load-bearing capacity and strong contact arc breaking capacity, so that it can have a more ideal switching life under higher load. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is: a top view of the utility model;

[0020] Figure 2yes: Figure 1 AA section view;

[0021] Figure 3 It is: a three-dimensional diagram of the utility model;

[0022] Figure 4 yes: Figure 1 A magnified view of part A;

[0023] Figure 5 yes: Figure 1 A magnified view of part B;

[0024] Figure 6 yes: Figure 3 Enlarged view of part C;

[0025] Figure 7 Yes: Push card stereogram;

[0026] Figure 8 Yes: A three-dimensional diagram of the assembly of the retaining ring, armature and yoke.

[0027] Explanation of the accompanying drawings: base 1, shell 2, push card 3, convex head 301, card edge A 302, connecting groove 303, movable spring plug-in hole 304, iron core 4, wire rack 5, coil 6, yoke 7, armature 8, card connection groove 801, card edge B 802, retaining spring 9, front hook 901, rear hook 902, movable spring 10, movable contact 11, movable spring lead-out pin 12, static spring 13, static spring lead-out pin 14, static contact 15, restoring spring 16, convex head plug-in hole 1601, restoring spring seat 17. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 8 As shown, a start control relay, such as Figure 1 and Figure 2 As shown, it includes a base 1, a housing 2 arranged on the base 1, and a magnetic circuit component, a contact component and a push card 3 arranged between the base 1 and the housing 2; Figure 1 and Figure 3As shown, the magnetic circuit assembly is arranged on the right side above the base 1, and the magnetic circuit assembly includes an iron core 4, a wire frame 5, a coil 6, a yoke 7, an armature 8 and a retaining spring 9. The wire frame 5 is fixedly arranged on the base 1, on the right side, and the coil 6 is arranged on the wire frame 5, and the axis of the coil 6 is in the front-to-back direction; the iron core 4 is inserted into the coil 6 in the front-to-back direction, and the yoke 7 is L-shaped, one side of the yoke 7 is riveted to the tail end of the iron core 4, and the other side of the yoke 7 is arranged on the left side of the coil 6 along the axis of the coil 6; the armature 8 is arranged on the left side of the yoke 7, and the contact assembly is arranged on the left side of the armature 8; as shown Figure 1 and Figure 4 As shown, the contact assembly includes a moving spring piece 10, a moving contact 11, a moving spring lead pin 12, a stationary spring piece 13, a stationary spring lead pin 14 and a stationary contact 15; Figure 1 , Figure 5 and Figure 8 As shown, the clamping spring 9 is arranged on one side of the armature 8 to fix the armature 8;

[0030] like Figure 3 , Figure 6 and Figure 7 As shown, the push card 3 is a flat plate structure, which is arranged at the front end of the housing 2 in the left and right directions; the right end of the push card 3 is provided with an armature 8 connecting groove 303, and the upper and lower sides of the connecting groove 303 each form a clamping edge A 302; the upper and lower sides of the front end of the armature 8 are respectively provided with a push card 3 clamping groove 801, and the front and rear sides of the push card 3 clamping groove 801 each form a clamping edge B 802, and the push card 3 clamping grooves 801 on both sides of the front end of the armature 8 are respectively clamped into the armature 8 connecting groove 303 at the right end of the push card 3, so that the front end of the push card 3 is pressed into the armature 8 connecting groove 303, and the right end of the push card 3 and the front end of the armature 8 are tightly matched with each other; the middle part of the push card 3 is provided with a movable spring piece plug-in hole 304, and the front end of the movable spring piece 10 is penetrated in the movable spring piece plug-in hole 304, and when the push card 3 moves to the left, there is enough travel to drive the movable spring piece 10 to move;

[0031] A convex head 301 is provided at the middle of the left end of the push card 3, and also includes a restoring spring 16 and a restoring spring seat 17. The restoring spring seat 17 is fixedly arranged on the left rear of the base 1, and the rear end of the restoring spring is arranged on the restoring spring seat. A convex head jack 1601 is provided at the front end of the restoring spring 16. The convex head 301 is inserted into the convex head jack 1601 and is tightly matched with each other, so that the front end of the restoring spring 16, the front end of the moving spring 10 and the front end of the armature 8 are connected together through the push card 3; when there is electromagnetic excitation after power is turned on, the electromagnetic suction force is greater than the reaction force of the restoring spring 16, and the contact is closed. When there is no electromagnetic excitation after power is turned off, the contact is disconnected due to the reaction force of the restoring spring 16. The reaction force of the restoring spring 16 is used to effectively avoid the adhesion failure of the contact under high current conditions;

[0032] like Figure 1 , Figure 5 and Figure 8 As shown, the retaining spring 9 includes a rear hook 902, a retaining spring 9 main body and a front hook 901; a rear hook 902 insertion hole is provided in the middle of the bending part of the armature 8, and a front hook 901 insertion hole is provided at the lower rear end of the yoke 7; the rear hook 902 of the retaining spring 9 is plug-assembled and connected with the rear hook 902, and the rear front hook 901 of the retaining spring 9 is plug-assembled and connected with the front hook 901; the retaining spring 9 is used to fix the armature 8 and the yoke 7 to form a magnetic circuit, thereby reducing the riveting process and improving the product performance stability and assembly efficiency.

[0033] like Figure 1 and Figure 4 As shown, the load capacity of the moving contact 11 and the static contact 15 reaches 30A-250VAC, and the service life is 100,000 times.

[0034] like Figure 2 As shown, one end of the movable spring piece 10 is connected to the movable spring lead-out pin 12 and fixed on the frame, and the movable contact 11 is riveted to the middle of the movable spring piece 10; the movable spring lead-out pin 12 is arranged at the rear side below the base 1, and the static spring lead-out pin 14 is arranged at the front side below the base 1.

[0035] like Figure 3 and Figure 6 As shown, the clamping edges B 802 on both sides of the clamping groove 801 are bent to the left, and the clamping edges B 802 are tightly attached to the front surface of the push card 3 on the inner side of the armature 8 connection groove 303, so that the armature 8 is firmly connected to the push card 3 through the clamping edges B 802.

[0036] like Figure 5 As shown, a positioning groove is provided on the right side of the yoke 7, and one side of the main body of the clamping spring 9 is clamped in the positioning groove, which plays a role in positioning the yoke 7, so that the clamping spring 9 can stably fix the yoke 7.

[0037] like Figure 6 and Figure 7 As shown, the push card 3 is a ceramic push card 3 made of ceramic.

[0038] The embodiments described above are only preferred implementations of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A start control relay, comprising a base, a shell arranged on the base, and a magnetic circuit assembly, a contact assembly and a push card arranged between the base and the shell; the magnetic circuit assembly is arranged on the right side above the base, and the magnetic circuit assembly includes an iron core, a wire frame, a coil, a yoke, an armature and a retaining spring, the wire frame is fixedly arranged on the right side of the base, the coil is arranged on the wire frame, and the axis of the coil is in the front-to-back direction; the iron core is inserted into the coil in the front-to-back direction, the yoke is L-shaped, one side of the yoke is riveted to the tail end of the iron core, and the other side of the yoke is arranged on the left side of the coil along the axis of the coil; the armature is arranged on the left side of the yoke, and the contact assembly is arranged on the left side of the armature; the contact assembly includes a moving spring sheet, a moving contact, a moving spring lead-out pin, a static spring sheet, a static spring lead-out pin and a static contact; the retaining spring is arranged on one side of the armature to fix the armature; it is characterized in that: The push card is a flat plate structure, and is arranged at the front end of the housing in the left and right directions; the right end of the push card is provided with an armature connecting groove, and the upper and lower sides of the connecting groove each form a card edge A; the upper and lower sides of the front end of the armature are respectively provided with a push card clamping groove, and the front and rear sides of the push card clamping groove each form a card edge B, and the push card clamping grooves on both sides of the front end of the armature are respectively inserted into the armature connecting groove at the right end of the push card, so that the front end of the push card is pressed into the armature connecting groove, and the right end of the push card and the front end of the armature are tightly matched with each other; the middle part of the push card is provided with a movable spring piece insertion hole, and the front end of the movable spring piece is inserted into the movable spring piece insertion hole; A convex head is provided at the middle of the left end of the push card, and also includes a restoring spring and a restoring spring seat. The restoring spring seat is fixedly arranged on the left rear of the base, the rear end of the restoring spring is arranged on the restoring spring seat, and a convex head insertion hole is provided at the front end of the restoring spring. The convex head is inserted into the convex head insertion hole and is tightly matched with each other, so that the front end of the restoring spring, the front end of the moving spring and the front end of the armature are connected together through the push card; The retaining spring includes a rear hook, a retaining spring body and a front hook; a rear hook insertion hole is provided in the middle of the bending part of the armature, a front hook insertion hole is provided at the lower rear end of the yoke, the rear retaining spring hook is plug-assembled and connected with the rear hook, and the rear front retaining spring hook is plug-assembled and connected with the front hook.

2. A starting control relay according to claim 1, characterized in that: The load capacity of the moving contact and the static contact is 30A-250VAC, and the life span is 100,000 times.

3. A starting control relay according to claim 1, characterized in that: One end of the moving spring piece is connected to the moving spring lead-out pin and fixed on the frame, and the middle part of the moving spring piece is riveted with a moving contact; the moving spring lead-out pin is arranged at the rear side below the base, and the static spring lead-out pin is arranged at the front side below the base.

4. A starting control relay according to claim 1, characterized in that: The clamping edges B on both sides of the clamping groove are bent to the left, and the clamping edges B are tightly attached to the front surface of the push clamp on the inner side of the armature connection groove, so that the armature is firmly connected to the push clamp through the clamping edges B.

5. A starting control relay according to claim 1, characterized in that: A positioning groove is arranged on the right side of the yoke iron, and one side of the retaining spring body is clamped in the positioning groove to play a role in positioning the yoke iron.

6. A starting control relay according to claim 1, characterized in that: The push card is a ceramic push card made of ceramic.

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