Proximity switch packaging structure and proximity switch

Abstract

The utility model belongs to the technical field of proximity switches, and discloses a proximity switch packaging structure and a proximity switch. The proximity switch packaging structure comprises a shell, a plurality of contact pieces are arranged in the shell at intervals in the circumferential direction, and a positioning cavity is defined by the inner sides of the contact pieces; the shell is provided with an opening, the opening is communicated with the positioning cavity, and the positioning cavity is configured to be clamped with the magnetic reed switch assembly. When the magnetic reed switch assembly is installed, the magnetic reed switch assembly enters the positioning cavity through the opening and is connected with the positioning cavity in a clamped mode so that positioning of the magnetic reed switch assembly can be achieved, then glue is injected into the shell through the opening, the procedure of assembling the inner box body is reduced, operation is easy, and production efficiency is improved. The magnetic reed switch assembly is provided with the plurality of contact elements, the wall surfaces of the plurality of contact elements are all attached to the colloid, and after the colloid is filled, the first glue containing groove continues to contain the colloid, so that the end surfaces, close to one end of the opening of the shell, of the plurality of contact elements are also attached to the colloid, and the magnetic reed switch assembly is not easy to separate from the shell when the magnetic reed switch assembly is subjected to external force.

Description

Technical Field

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

[0002] Proximity switches are key components in industrial automation and have a variety of applications. Proximity switches can detect magnetic objects using the principle of electromagnetic induction, and then perform switching actions and output electrical signals.

[0003] The proximity switch includes a reed switch, two wires and a housing. During installation, the two pins on the reed switch are connected to the two wires respectively, and then the reed switch and the two wires are installed as a whole on the proximity switch packaging structure. The existing proximity switch packaging structure mainly includes an inner box body and an outer box body. During installation, the reed switch and the two wires are installed on the inner box body, and then the inner box body and the outer box body are crimped and hot-melted and fixed by ribs. However, such installation has a relatively complicated installation process and a relatively low production efficiency. Utility Model Content

[0004] The utility model aims to provide a proximity switch packaging structure and a proximity switch, which have simple installation procedures, high efficiency in producing the proximity switch, large contact area between the colloid and the shell, and are not easy to separate from the shell when the reed switch assembly is subjected to external force.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a proximity switch packaging structure is provided, comprising:

[0007] A shell, wherein a plurality of contact members are arranged in the shell at intervals along the circumferential direction, and the inner sides of the plurality of contact members are surrounded to form a positioning cavity; the shell is provided with an opening, which is used as a glue injection port and an installation port of a reed switch assembly, and the opening is communicated with the positioning cavity, and the positioning cavity is configured to be snap-fitted with the reed switch assembly; the side wall surfaces of the plurality of contact members are configured to be able to fit with the glue fixing the reed switch assembly, and the end surfaces of the plurality of contact members close to one end of the opening are surrounded with the inner side wall at the opening to form a first glue-containing groove.

[0008] In some possible embodiments, two adjacent side walls of two adjacent contact members and the inner wall of the shell together form a connecting groove, and among the multiple connecting grooves, a notch of at least one connecting groove close to one side of the positioning cavity is used to abut against the reed switch assembly.

[0009] In some possible implementations, each of the contact members is fixed to the inner side wall of the shell, and end surfaces of a plurality of the contact members close to one end of the inner bottom wall of the shell are surrounded by the inner bottom wall of the shell to form a second glue-containing groove.

[0010] In some possible implementations, one end of each of the contacts close to the inner side wall of the shell is fixed to the inner side wall of the shell, and one end of each of the contacts close to the inner bottom wall of the shell is fixed to the inner bottom wall of the shell.

[0011] In some possible implementations, the positioning cavity is cylindrical.

[0012] In some possible implementations, the contact piece is a T-shaped structure, the inner side of the head of the T-shaped structure encloses the positioning cavity, and the tail of the T-shaped structure is connected to the inner wall of the shell.

[0013] In some possible implementations, weight-reducing holes are provided on the outer wall of the shell.

[0014] In some possible implementations, reinforcing ribs are provided on the outer wall of the shell.

[0015] In some possible implementations, the plurality of contact members are integrally formed with the housing.

[0016] On the other hand, a proximity switch is provided, comprising a reed switch assembly and a proximity switch packaging structure as described in any of the above schemes, wherein the reed switch assembly is engaged with the positioning cavity.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a proximity switch packaging structure, including a shell, a plurality of contact pieces are arranged in the shell along the circumferential interval, and the inner sides of the plurality of contact pieces are surrounded to form a positioning cavity; the shell is provided with an opening, the opening is connected with the positioning cavity, and the positioning cavity is configured to be engaged with a reed switch assembly. When installing the reed switch assembly, the reed switch assembly enters the positioning cavity through the opening and is engaged with the positioning cavity to achieve the positioning of the reed switch assembly, and then the glue is injected into the shell through the opening to fix the reed switch assembly, which reduces the process of assembling the inner box body, is simple to operate, and improves the efficiency of producing the proximity switch. A plurality of contact pieces are provided, and the wall surfaces of the plurality of contact pieces are all in contact with the glue. Compared with only in contact with the cavity wall of the positioning cavity, the contact area between the glue and the shell is increased, and the pulling force is increased; and after the glue is filled, the first glue containing groove continues to contain the glue, so that the end faces of the plurality of contact pieces close to one end of the shell opening are also in contact with the glue, and when the reed switch assembly is subjected to external force, it is not easy to separate from the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a first-view structural diagram of the proximity switch packaging structure provided by the utility model;

[0020] Figure 2 This is a second perspective structural schematic diagram of the proximity switch packaging structure provided by the utility model;

[0021] Figure 3 It is a structural schematic diagram of the reed switch assembly involved in the utility model;

[0022] Figure 4 It is a schematic diagram of the assembly structure of the proximity switch packaging structure and the reed switch assembly involved in the utility model from a first perspective;

[0023] Figure 5 It is a schematic diagram of the assembly structure of the proximity switch packaging structure and the reed switch assembly involved in the utility model from a second viewing angle;

[0024] Figure 6 The utility model is a schematic diagram of the assembly structure of the proximity switch packaging structure, the reed switch component and the colloid.

[0025] In the figure:

[0026] 1. Shell; 11. Opening; 12. First adhesive groove; 2. Contact piece; 3. Positioning cavity; 4. Connecting groove; 5. Weight-reducing hole; 6. Reinforcing rib; 7. Mounting hole;

[0027] 100. Reed switch assembly; 101. Reed switch; 102. Electric wire; 200. Colloid. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figures 1 to 6As shown, the utility model provides a proximity switch packaging structure, including a housing 1, a plurality of contact members 2 are arranged in the circumferential direction in the housing 1, and the inner sides of the plurality of contact members 2 are surrounded to form a positioning cavity 3; the housing 1 is provided with an opening 11, which is used as a glue injection port and a mounting port of a magnetic reed switch assembly 100, the opening 11 is connected to the positioning cavity 3, and the positioning cavity 3 is configured to be snap-fitted with the magnetic reed switch assembly 100; the side wall surfaces of the plurality of contact members 2 are configured to be able to fit with the colloid 200 that fixes the magnetic reed switch assembly 100, and the end surfaces of the plurality of contact members 2 close to one end of the opening 11 and the inner side wall at the opening 11 are surrounded to form a first glue-containing groove 12. Optionally, the housing 1 is made of plastic material, and the colloid 200 can be epoxy resin. When installing the reed switch assembly 100, the reed switch assembly 100 enters the positioning cavity 3 through the opening 11 and is engaged with the positioning cavity 3 to achieve the positioning of the reed switch assembly 100. Then, glue is injected into the housing 1 through the opening 11. After the glue 200 is cured, the reed switch assembly 100 can be fixed. Such installation reduces the process of assembling the inner box body, is simple to operate, improves the efficiency of producing proximity switches, saves labor hours, saves mold production, reduces management costs, improves product consistency, and improves the yield rate of products. A plurality of contact members 2 are provided, and the wall surfaces of the plurality of contact members 2 are all in contact with the colloid 200. Compared with only being in contact with the cavity wall of the positioning cavity 3, the contact area between the colloid 200 and the shell 1 is increased, and the pulling force is increased; and after the colloid 200 is filled, the first glue containing groove 12 continues to contain the colloid 200, so that the end surfaces of the plurality of contact members 2 close to the opening 11 of the shell 1 are also in contact with the colloid 200, and when the reed switch assembly 100 is subjected to external force, it is not easy to separate from the shell 1.

[0033] Optionally, two adjacent side walls of two adjacent contact members 2 and the inner wall of the housing 1 are enclosed to form a connecting groove 4. Among the multiple connecting grooves 4, at least one connecting groove 4 has a notch close to the positioning cavity 3 for abutting against the reed switch assembly 100. The reed switch assembly 100 is abutted against the notch of the connecting groove 4 close to the positioning cavity 3. After the colloid 200 is injected into the housing 1 through the opening 11 of the housing 1, the connecting groove 4 also contains the colloid 200. The colloid 200 in the connecting groove 4 can contact the reed switch assembly 100 to fix the reed switch assembly 100. Compared with the reed switch assembly 100 abutting against the cavity wall of the positioning cavity 3, the contact area between the colloid 200 and the reed switch assembly 100 is increased, and the fixing effect is better. Optionally, in this embodiment, three contact members 2 are provided. Among the three connecting grooves 4, the notch of one connecting groove 4 close to the positioning cavity 3 abuts against the reed switch assembly 100. In other embodiments, the reed switch assembly 100 may also abut against the cavity wall of the positioning cavity 3 .

[0034] Optionally, in this embodiment, the plurality of contact members 2 are integrally formed with the housing 1. This arrangement is convenient for processing and has a high structural strength.

[0035] Optionally, each contact member 2 is fixed to the inner side wall of the housing 1, and the end faces of the multiple contact members 2 close to one end of the inner bottom wall of the housing 1 are surrounded by the inner bottom wall of the housing 1 to form a second glue containing groove. In this way, when the reed switch assembly 100 is subjected to an external force along the length direction of the inner cavity of the housing 1, since the second glue containing groove contains the solidified glue 200, even if the glue 200 is separated from the inner bottom wall of the housing 1 due to some reasons, the glue 200 abuts against the end faces of the multiple contact members 2 close to one end of the inner bottom wall of the housing 1, so that the reed switch assembly 100 will not be separated from the housing 1.

[0036] Optionally, one end of each contact member 2 close to the inner side wall of the housing 1 is fixed to the inner side wall of the housing 1, and one end of each contact member 2 close to the inner bottom wall of the housing 1 is fixed to the inner bottom wall of the housing 1. This arrangement makes the connection strength between the contact member 2 and the housing 1 better. Optionally, in other embodiments, the contact member 2 may also be fixed only to the inner bottom wall of the housing 1.

[0037] Optionally, in this embodiment, the positioning cavity 3 is cylindrical. The positioning cavity 3 is set to be cylindrical for easy processing. Optionally, in other embodiments, the positioning cavity 3 is a regular shape such as a cuboid, a cone, or other irregular shapes. During installation, as long as the reed switch assembly 100 can be snap-fitted with the positioning cavity 3 and the position of the reed switch assembly 100 is ensured not to change, it is not limited to this embodiment.

[0038] Optionally, in this embodiment, the contact 2 is a T-shaped structure, the inner side of the head of the T-shaped structure encloses the positioning cavity 3, and the tail of the T-shaped structure is connected to the inner wall of the housing 1. This arrangement is simple to process, and the contact area between the colloid 200 and the side wall of the contact 2 is large.

[0039] Optionally, in this embodiment, a weight-reducing hole 5 is provided on the outer wall of the housing 1. This arrangement can reduce the weight of the housing 1. Optionally, in this embodiment, a reinforcing rib 6 is provided on the outer wall of the housing 1. This arrangement can improve the strength of the housing 1. Optionally, in this embodiment, a mounting hole 7 is provided on the housing 1, and the proximity switch packaging structure is mounted on a desired product through the mounting hole 7.

[0040] The utility model also provides a proximity switch, which cooperates with an external magnet to control the opening and closing state of the proximity switch through magnetic field induction. When the distance between the magnet and the proximity switch is within the sensing range, the proximity switch is turned on; when it is outside the sensing range, the proximity switch is turned off. The signal emitted by the proximity switch acts on the control mechanism, and then the control mechanism is used to control other components. The proximity switch includes a reed switch assembly 100 and a proximity switch packaging structure. The reed switch assembly 100 is snap-connected to the positioning cavity 3. The proximity switch is easy to install and operate, and has high production efficiency. When the reed switch assembly 100 is subjected to external force, it is not easy to separate from the shell 1. Specifically, Figure 3 As shown, the reed switch assembly 100 includes a reed switch 101 and two wires 102 , and two pins on the reed switch 101 are respectively soldered to the two wires 102 by soldering.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A proximity switch packaging structure, characterized in that: include: A shell (1), wherein a plurality of contact members (2) are arranged at intervals along the circumferential direction inside the shell (1), and the inner sides of the plurality of contact members (2) are surrounded to form a positioning cavity (3); the shell (1) is provided with an opening (11) used as a glue injection port and a mounting port for a reed switch assembly (100), the opening (11) is communicated with the positioning cavity (3), and the positioning cavity (3) is configured to be snap-fitted with the reed switch assembly (100); the side wall surfaces of the plurality of contact members (2) are configured to be able to fit with a glue (200) that fixes the reed switch assembly (100), and the end surfaces of the plurality of contact members (2) close to one end of the opening (11) and the inner side wall at the opening (11) are surrounded to form a first glue-containing groove (12).

2. The proximity switch packaging structure according to claim 1, characterized in that: Two adjacent side walls of two adjacent contact members (2) and the inner wall of the housing (1) together form a connecting groove (4); among the plurality of connecting grooves (4), a notch of at least one connecting groove (4) close to one side of the positioning cavity (3) is used to abut against the reed switch assembly (100).

3. The proximity switch packaging structure according to claim 1, characterized in that: Each of the contact members (2) is fixed to the inner side wall of the shell (1), and the end surfaces of the plurality of contact members (2) close to one end of the inner bottom wall of the shell (1) are combined with the inner bottom wall of the shell (1) to form a second glue-containing groove.

4. The proximity switch packaging structure according to claim 1, characterized in that: One end of each contact piece (2) close to the inner side wall of the shell (1) is fixed to the inner side wall of the shell (1), and one end of each contact piece (2) close to the inner bottom wall of the shell (1) is fixed to the inner bottom wall of the shell (1).

5. The proximity switch packaging structure according to claim 1, characterized in that: The positioning cavity (3) is cylindrical.

6. The proximity switch packaging structure according to claim 1, characterized in that: The contact piece (2) is a T-shaped structure, the inner side of the head of the T-shaped structure encloses the positioning cavity (3), and the tail of the T-shaped structure is connected to the inner wall of the housing (1).

7. The proximity switch packaging structure according to any one of claims 1 to 6, characterized in that: A weight-reducing hole (5) is provided on the outer wall of the shell (1).

8. The proximity switch packaging structure according to any one of claims 1 to 6, characterized in that: Reinforcing ribs (6) are provided on the outer wall of the shell (1).

9. The proximity switch packaging structure according to any one of claims 1 to 6, characterized in that: The plurality of contact members (2) and the housing (1) are integrally formed.

10. A proximity switch, characterized in that: It comprises a reed switch assembly (100) and a proximity switch packaging structure according to any one of claims 1 to 9, wherein the reed switch assembly (100) is snap-connected with a positioning cavity (3).

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