Pre-bending static contact assembly and relay with pre-bending static contact assembly

Abstract

The utility model discloses a pre-bending static contact assembly and a relay with the pre-bending static contact assembly. The pre-bending static contact assembly comprises a static piece and a static contact, the static contact is installed at the first end of the static piece, the second end of the static piece serves as a wiring end, the second end and the middle of the static piece are fixed, the first end of the static piece is pre-bent, and the bending direction enables the static contact to tend to the movable contact. According to the utility model, the pre-bending characteristic is applied to the static sheet, so that the static contact can be naturally close to the movable contact, the contact strength between the static contact and the movable contact can be enhanced, and the springback phenomenon between the contacts can be reduced, thereby improving the switching response time of the contacts and the durability of the contacts; and moreover, the device has better adaptive capacity to the influence of external environment change, vibration and temperature.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technology field, concretely relates to a pre-bending static contact component and relay with pre-bending static contact component. BACKGROUND

[0002] Relay is a common and widely used in electrical control field switching device, its structure generally by electromagnet and a group of contact point composition. The operation principle of relay is based on electromagnetic induction, when electromagnet is electrified, will produce magnetic field in its coil, this magnetic field will attract the contact point connected to close, thereby realizing the conduction of current, on the contrary, when electromagnet is powered off, the contact point will open due to the disappearance of magnetic field, and current cannot continue to flow. Therefore, relay can switch on-off of large current by controlling small current, bear the switching, protection and regulation function of circuit in automatic control system.

[0003] In the use process, due to the influence of external environment change, vibration and temperature, the contact point in electromagnetic relay can produce abrasion or cause contact resistance to increase due to poor contact. This can cause heating, signal attenuation, and even cause circuit failure. Therefore, how to improve the contact reliability of static contact and moving contact, reduce the contact resistance and improve the overall performance in the design of relay has become a technical problem to be solved. SUMMARY

[0004] In order to improve the contact reliability of static contact and moving contact, the utility model provides a pre-bending static contact component and relay with pre-bending static contact component.

[0005] The technical scheme adopted by the utility model is as follows: a pre-bending static contact component, including static sheet and static contact point, the first end of the static sheet is installed with the static contact point, and the second end is used as a wiring end, the second end and the middle part of the static sheet are fixed, and the first end is pre-bent, and the bending direction is to make the static contact point tend to the moving contact point.

[0006] Preferably, the second end and the middle part of the static sheet are fixed by using a slot.

[0007] Preferably, the second end of the static sheet is fixed by using a clamping groove, and the middle part is supported by a one-way support, and the direction of the one-way support is opposite to the direction of pre-bending.

[0008] The second set of technical solutions adopted by the utility model is as follows: a relay with pre-bending static contact component, including electromagnetic drive assembly, armature assembly, push card arranged in the shell, moving contact assembly composed of moving sheet and moving contact point, and the pre-bending static contact component, the armature assembly drives the push card to drive the moving contact point to approach or away from the static contact point.

[0009] Preferably, the housing is provided with a bracket, and the electromagnetic drive assembly, the armature assembly, the push card, the movable contact assembly and the pre-bent static contact assembly are mounted on the bracket.

[0010] Preferably, the bracket is provided with a first clamping groove for fixing the second end of the static sheet and a second clamping groove for fixing the middle part of the static sheet.

[0011] Preferably, the bracket is provided with a first clamping groove for fixing the second end of the static sheet and a second clamping groove for fixing the middle part of the static sheet.

[0012] Preferably, the bracket is provided with a first clamping groove for fixing the second end of the static sheet and a second clamping groove for fixing the middle part of the static sheet.

[0013] Preferably, the bracket is provided with a first clamping groove for fixing the second end of the static sheet and a second clamping groove for fixing the middle part of the static sheet. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic view of the embodiment of the utility model.

[0015] Figure 2 It is an explosion schematic view of the embodiment of the utility model.

[0016] Figure 3 It is a front view schematic view (hidden housing and bracket) of the embodiment of the utility model.

[0017] Figure 4 It is a front view schematic view of the housing in the embodiment of the utility model.

[0018] Static sheet 1;

[0019] Static contact 2;

[0020] Dynamic sheet 3;

[0021] Movable contact 4;

[0022] Housing 5;

[0023] Electromagnetic drive assembly 6;

[0024] Armature assembly 7;

[0025] Push card 8;

[0026] Bracket 9, first clamping groove 901, second clamping groove 902, protrusion 903. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] In the embodiments, such as Figures 1-4 The diagram illustrates a relay with a pre-bent stationary contact assembly. It includes an electromagnetic drive assembly 6, an armature assembly 7, a pusher 8, a moving contact assembly consisting of a moving piece 3 and a moving contact 4, and a pre-bent stationary contact assembly consisting of a stationary piece 1 and a stationary contact 2, all housed within a housing 5. The armature assembly 7 drives the pusher 8 to move the moving contact 4 closer to or away from the stationary contact 2. The stationary piece 1 has the stationary contact 2 mounted at its first end and a wiring terminal at its second end. The second end and middle of the stationary piece 1 are fixed, while the first end is pre-bent, with the bending direction causing the stationary contact 2 to approach the moving contact 4. This embodiment, by applying a pre-bending characteristic to the stationary piece 1, allows the stationary contact 2 to naturally approach the moving contact, enhancing the contact strength between the stationary contact 2 and the moving contact 4, reducing contact rebound, thereby improving the switching response time and durability of the contacts. Furthermore, it provides better adaptability to changes in the external environment, vibration, and temperature.

[0029] In the embodiments, such as Figure 2 As shown, a bracket 9 is provided inside the housing 5, on which the electromagnetic drive assembly 6, armature assembly 7, pusher 8, moving contact assembly, and pre-bent stationary contact assembly are all mounted. In this embodiment, the bracket 9 provides a reliable support platform within the housing 5, enabling the electromagnetic drive assembly 6, armature assembly 7, pusher 8, moving contact assembly, and pre-bent stationary contact assembly to be stably installed, thereby reducing relative movement between components and wear. The bracket 9 makes it easier to align the various components during installation, reducing the complexity of the assembly process and thus improving production efficiency and assembly quality. Furthermore, it can easily adapt to different relay structures and the integration of various electrical components, increasing product flexibility and facilitating subsequent updates and improvements.

[0030] In the embodiments, such as Figure 3 , Figure 4As shown, the bracket 9 is provided with a first clamping groove 901 for fixing the second end of the static sheet 1, and a second clamping groove 902 for fixing the middle part of the static sheet 1. This fixing mode of the embodiment can effectively prevent the static sheet 1 from being displaced due to vibration or external force during use, reducing the risk of failure. By fixing the second end and the middle part of the static sheet 1 through the first clamping groove 901 and the second clamping groove 902 respectively, the stress distribution of the static sheet 1 in the working state is more uniform, thereby reducing the distortion and deformation of the static sheet during high-frequency switching operation, further enhancing the durability of the assembly. By providing a curved clamping groove structure for the installation of the static sheet 1, the assembly process is more intuitive and efficient, reducing the requirements on the assembly process, thereby helping to improve production efficiency and reduce production cost. At the same time, the stable fixing configuration of the static sheet 1 ensures consistent contact force between the static contact 2 and the moving contact 4, reduces the fluctuation of the contact resistance, helps to improve the electrical performance of the relay, and reduces energy loss.

[0031] In the embodiment, as shown in Figure 3 、 Figure 4 As shown, the bracket 9 is provided with a first clamping groove 901 for fixing the second end of the static sheet 1, and a second clamping groove 902 for fixing the middle part of the static sheet 1. This fixing mode of the embodiment can effectively prevent the static sheet 1 from being displaced due to vibration or external force during use, reducing the risk of failure. By fixing the second end and the middle part of the static sheet 1 through the first clamping groove 901 and the second clamping groove 902 respectively, the stress distribution of the static sheet 1 in the working state is more uniform, thereby reducing the distortion and deformation of the static sheet during high-frequency switching operation, further enhancing the durability of the assembly. By providing a curved clamping groove structure for the installation of the static sheet 1, the assembly process is more intuitive and efficient, reducing the requirements on the assembly process, thereby helping to improve production efficiency and reduce production cost. At the same time, the stable fixing configuration of the static sheet 1 ensures consistent contact force between the static contact 2 and the moving contact 4, reduces the fluctuation of the contact resistance, helps to improve the electrical performance of the relay, and reduces energy loss.

[0032] Obviously, the above embodiments of the utility model are only examples for illustrating the utility model, and are not a limitation on the embodiments of the utility model. Other obvious changes or variations derived from the essential spirit of the utility model still belong to the protection scope of the utility model.

Claims

1. A pre-bent female contact assembly comprising a female blade (1) and a female contact (2), a first end of the female blade (1) mounting the female contact (2) and a second end of the female blade (1) being a terminal end, characterized in that, The second end and the middle part of the static sheet (1) are fixed, and the first end is pre-bent, and the bending direction is to make the static contact (2) tend to the moving contact (4).

2. The pre-bent male contact assembly of claim 1, wherein, The second end and the middle part of the static sheet (1) are fixed by inserting slots.

3. The pre-bent male contact assembly of claim 1, wherein, The second end of the static sheet (1) is fixed by a clamping slot, and the middle part is supported by a one-way support, and the direction of the one-way support is opposite to the direction of the pre-bending.

4. A relay having a pre-bent stationary contact assembly, characterized by, The electromagnetic drive assembly (6), the armature assembly (7), the push card (8), the moving contact assembly composed of the moving sheet (3) and the moving contact (4), and the pre-bent static contact assembly of any one of claims 1-3 are arranged in the shell (5), the armature assembly (7) drives the push card (8) to drive the moving contact (4) to approach or move away from the static contact (2).

5. The relay having a pre-bent static contact assembly of claim 4, wherein, The shell (5) is provided with a support (9), and the electromagnetic drive assembly (6), the armature assembly (7), the push card (8), the moving contact assembly and the pre-bent static contact assembly are all installed on the support (9).

6. The relay having a pre-bent static contact assembly of claim 5, wherein, The support (9) is provided with a first clamping slot (901) for fixing the second end of the static sheet (1), and a second clamping slot (902) for fixing the middle part of the static sheet (1).

7. The relay having a pre-bent static contact assembly of claim 5, wherein, The support (9) is provided with a first clamping slot (901) for fixing the second end of the static sheet (1), and a second clamping slot (902) for fixing the middle part of the static sheet (1).

8. The relay having a pre-bent static contact assembly of claim 7, wherein, The support (9) is provided with a first clamping slot (901) for fixing the second end of the static sheet (1), and a second clamping slot (902) for fixing the middle part of the static sheet (1). The protrusion (903) is a wedge-shaped structure with rounded corners.

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