Pressure switch

Abstract

The utility model provides a pressure switch, which comprises a cover plate and a base, a cavity is enclosed by the cover plate and the base, two insertion pieces and leads correspondingly welded with the insertion pieces are arranged in the cavity, one insertion piece is provided with a static contact, the other insertion piece is provided with a movable contact, and an opening for the two leads to extend out is formed at the top of the cover plate; the wire blocking plate is assembled with the cover plate through elastic hooks and used for blocking the opening, notch grooves corresponding to the lead are formed in the two sides of the wire blocking plate, the elastic hooks are arranged on the two sides of the bottom of the wire blocking plate, and the elastic hooks are used for being connected with the bottom wall of the edge of the opening in a hooking mode. In the assembling process, the lead is welded with the inserting piece, then the cover plate and the wire blocking plate are sequentially covered, the wire blocking plate is connected with the bottom wall of the edge of the opening of the cover plate in a hooking mode through the elastic hook, and compared with the mode that the lead is connected with the inserting piece through forced insertion in the prior art, installation is faster and more convenient, and contact between the lead and the inserting piece is more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a pressure switch. Background Art

[0002] A pressure switch is an electrical contact device that drives a switch through the action of gas or liquid pressure. The existing pressure switch includes a housing and a socket arranged inside the housing. A through hole corresponding to the socket is provided on the housing. During assembly, an external lead enters the through hole by forced insertion and then abuts against the socket. The installation of the external lead by forced insertion is laborious and prone to poor contact between the external lead and the socket. Summary of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects that the installation of the existing pressure switch is laborious and prone to poor contact between the external lead and the pin, so as to provide a pressure switch with convenient installation and high contact reliability.

[0004] To this end, the utility model provides a pressure switch, which includes a cover plate, a base and a wire blocking plate. The cover plate and the base enclose to form a cavity. Two sockets and leads correspondingly welded to the sockets are arranged in the cavity. One of the sockets is provided with a static contact, and the other socket is provided with a moving contact piece. An opening for the two leads to extend out is formed at the top of the cover plate; the wire blocking plate is assembled with the cover plate through elastic hooks and is used for blocking the opening. Notch grooves corresponding to the leads are arranged on both sides of the wire blocking plate. Elastic hooks are arranged on both sides of the bottom of the wire blocking plate, and the elastic hooks are used for hook connection with the bottom wall of the opening edge.

[0005] The gap between the wire blocking plate and the cover plate is filled with sealant, and the gap between the wire blocking plate and the leads is filled with sealant.

[0006] After the wire blocking plate is assembled with the cover plate, the top surface of the wire blocking plate is arranged lower than the top surface of the cover plate. The top surface of the wire blocking plate and the side wall of the opening of the cover plate enclose a first sealant groove for filling sealant.

[0007] The notch groove is an arc groove adapted to the outer shape of the lead.

[0008] A second sealant groove is arranged on the side of the wire blocking plate above the notch groove. The diameter of the second sealant groove is larger than that of the notch groove and is used for accommodating sealant.

[0009] The socket is formed with an arc groove suitable for installing the head of the lead.

[0010] The technical solution of the utility model has the following advantages:

[0011] 1. The pressure switch provided by the present utility model has an opening formed at the top of the cover plate for two leads to extend out. The wire blocking plate is assembled with the cover plate through elastic hooks and is used to block the opening. Notch grooves corresponding to the leads are provided on both sides of the wire blocking plate. During assembly, first weld the leads to the inserts, and then cover the cover plate and the wire blocking plate in sequence. The wire blocking plate is hooked and connected to the bottom wall of the edge of the opening of the cover plate through elastic hooks. Compared with the prior art method of connecting the leads to the inserts by forced insertion, such installation is faster and more convenient, and the contact between the leads and the inserts is more reliable.

[0012] 2. For the pressure switch provided by the present utility model, the gap between the wire blocking plate and the cover plate is filled with sealant, and the gap between the wire blocking plate and the leads is filled with sealant. In this way, the dustproof and waterproof effects are better, and the service life of the pressure switch is prolonged.

[0013] 3. For the pressure switch provided by the present utility model, after the wire blocking plate and the cover plate are assembled, the top surface of the wire blocking plate is set lower than the top surface of the cover plate. The top surface of the wire blocking plate and the side wall of the opening of the cover plate enclose a first sealant groove for filling sealant. In this way, the sealant will not flow out, which is more conducive to sealant application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a three-dimensional view of the pressure switch of the present utility model;

[0016] Figure 2 is an exploded structural schematic diagram of the pressure switch;

[0017] Figure 3 is a sectional view of the pressure switch;

[0018] Figure 4 is a three-dimensional view of the cover plate;

[0019] Figure 5 is an exploded schematic diagram of the insert and the lead.

[0020] Description of the reference numerals: 1, cover plate; 2, base; 3, insert; 4, lead; 6, static contact; 7, moving contact piece; 8, opening; 9, wire blocking plate; 10, elastic hook; 11, notch groove; 13, first sealant groove; 14, second sealant groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Embodiment

[0026] This embodiment provides a pressure switch, as Figure 1 shown, including a cover plate 1, a base 2, and a wire blocking plate 9.

[0027] The cover plate 1 and the base 2 enclose to form a cavity, as Figure 2 and Figure 3 shown. Two inserts 3 are provided in the cavity, and leads 4 are correspondingly welded to the inserts 3. One of the inserts 3 is provided with a static contact 6, and the other insert 3 is provided with a moving contact piece 7, as Figure 5 shown. The insert 3 is formed with an arc-shaped groove suitable for installing the head of the lead 4, and the top of the cover plate 1 is formed with an opening 8 for two leads 4 to extend out.

[0028] The wire blocking plate 9 is assembled with the cover plate 1 through an elastic hook 10 and is used to block the opening 8, as Figure 4As shown, notch grooves 11 corresponding to the lead wires 4 are provided on both sides of the wire blocking plate 9. Elastic hooks 10 are provided on both sides of the bottom of the wire blocking plate 9, and the elastic hooks 10 are used to be hooked and connected to the bottom wall of the edge of the opening 8. The gap between the wire blocking plate 9 and the cover plate 1 is filled with sealant, and the gap between the wire blocking plate 9 and the lead wires 4 is filled with sealant. In this embodiment, as Figure 1 shown, after the wire blocking plate 9 and the cover plate 1 are assembled, the top surface of the wire blocking plate 9 is lower than the top surface of the cover plate 1. The top surface of the wire blocking plate 9 and the side wall of the opening 8 of the cover plate 1 enclose a first sealant groove 13, and the first sealant groove 13 is used to fill sealant. The notch groove 11 is an arc-shaped groove adapted to the outer shape of the lead wire 4. A second sealant groove 14 is provided on the side of the wire blocking plate 9 above the notch groove 11. The diameter of the second sealant groove 14 is larger than that of the notch groove 11 and is used to accommodate sealant.

[0029] For the pressure switch provided by the present utility model, during assembly, first weld the lead wire 4 to the insert piece 3, and then cover the cover plate 1 and the wire blocking plate 9 in sequence. The wire blocking plate 9 is hooked and connected to the bottom wall of the edge of the opening of the cover plate 1 through the elastic hook. Compared with the prior art method of connecting the lead wire to the insert piece by forced insertion, such installation is more rapid and convenient, and the contact between the lead wire and the insert piece is more reliable.

[0030] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the creative concept of the present utility model.

Claims

1. A pressure switch, characterized in that: include: The cover plate (1) and the base (2) are enclosed to form a cavity, wherein two insert plates (3) and leads (4) welded to the insert plates (3) are arranged in the cavity, wherein one of the insert plates (3) is provided with a stationary contact (6), and the other insert plate (3) is provided with a moving contact (7), and an opening (8) is formed on the top of the cover plate (1) for the two leads (4) to extend out; A wire blocking plate (9) is assembled with the cover plate (1) via an elastic hook (10) and is used to cover the opening (8). Notches (11) corresponding to the lead wires (4) are provided on both sides of the wire blocking plate (9). Elastic hooks (10) are provided on both sides of the bottom of the wire blocking plate (9). The elastic hooks (10) are used to be hooked and connected to the bottom wall of the edge of the opening (8).

2. The pressure switch according to claim 1, characterized in that: The gap between the wire blocking plate (9) and the cover plate (1) is filled with sealant, and the gap between the wire blocking plate (9) and the lead wire (4) is filled with sealant.

3. The pressure switch according to claim 1 or 2, characterized in that: After the wire baffle plate (9) and the cover plate (1) are assembled, the top surface of the wire baffle plate (9) is arranged lower than the top surface of the cover plate (1), and the top surface of the wire baffle plate (9) and the side wall of the opening (8) of the cover plate (1) are combined to form a first sealing groove (13), and the first sealing groove (13) is used to fill the sealing glue.

4. The pressure switch according to claim 1, characterized in that: The notch groove (11) is an arc-shaped groove adapted to the shape of the lead wire (4).

5. The pressure switch according to claim 1, characterized in that: The side edge of the wire blocking plate (9) has a second sealing groove (14) arranged above the notch groove (11); the second sealing groove (14) has a larger diameter than the notch groove (11) and is used to contain sealing glue.

6. The pressure switch according to claim 1, characterized in that: The insert (3) is formed with an arc-shaped groove suitable for mounting the head of the lead wire (4).

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