Limit switch capable of fast wiring

Abstract

The utility model discloses a limit switch capable of fast wiring, which comprises a shell, an inductive head and a contact assembly arranged in the shell, the shell is provided with a wiring clamping device, the wiring clamping device is provided with a wiring terminal electrically connected with the contact assembly and a clamping assembly for clamping and fixing an external lead, and the clamping assembly is provided with a plurality of wiring terminals electrically connected with the contact assembly. And the clamping assembly is electrically connected with the wiring terminal. As the wiring terminal is electrically connected with the contact assembly and the clamping assembly is electrically connected with the wiring terminal, an external lead can be electrically connected with the contact assembly through the clamping assembly, and the lead does not need to be guided to be connected with the contact assembly and then penetrates out of the shell to be exposed outside; and through the clamping assembly, the external wires can be rapidly clamped and fixed, matching wiring processing between the wires is not needed, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of limit switch technology, and more specifically, to a limit switch that can be quickly wired. Background Technology

[0002] Limit switches, also known as travel switches or terminal switches, are common electromechanical control components used to detect whether the moving parts of mechanical equipment have reached preset or limit positions, and to send electrical signals when these positions are reached, thereby realizing functions such as control, counting, positioning, or safety protection.

[0003] Limit switches consist of a housing, a sensing head, and a contact assembly. In existing technologies, the contact assembly is connected via wires, which are then passed through the housing and connected to an external power source. This connection requires wiring and is cumbersome. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a limit switch that can be quickly wired.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A limit switch with quick wiring capability includes a housing, a sensing head, and a contact assembly installed inside the housing. A wiring clamp is installed on the housing, the wiring clamp having a terminal electrically connected to the contact assembly, and a clamping component for clamping and fixing external wires, the clamping component being electrically connected to the terminal.

[0007] Preferably, the outer casing has a positioning groove, and the wiring clamp further includes a housing, which is embedded in the positioning groove, and the outer side of the housing has a plurality of wire inlet grooves, and the clamping assembly is installed in the wire inlet grooves.

[0008] Preferably, the engagement assembly includes:

[0009] A guide member is elastically installed at the bottom of the inlet slot, and a conductive terminal is installed at the end of the guide member away from the bottom of the inlet slot. In the free state, the guide member drives the conductive terminal to clamp the external wire at the top of the inlet slot.

[0010] The adjusting component, in conjunction with the guide component, causes the guide component to retract, thereby causing the conductive terminal to terminate its engagement with the external wire.

[0011] Preferably, a guide groove is provided at the bottom of the inlet slot, and the guide member is elastically guided and installed in the guide groove by a spring. The adjusting member is a pull rod installed at the end of the guide member away from the conductive terminal and guided out of the guide groove.

[0012] Preferably, the adjusting member is horizontally guided and installed in the inlet slot, with one end extending outside the slot opening and the other end having an inclined surface. The guide member has a protrusion that abuts against the inclined surface on the side near the adjusting member. Pressing the adjusting member into the inlet slot causes the inclined surface to engage with the protrusion, thereby driving the guide member to move downward.

[0013] Preferably, a conductive base corresponding to a conductive terminal is installed on the top of the inlet slot, and the wiring terminal is connected to the conductive base and / or the conductive terminal.

[0014] Preferably, the outer casing has a groove, and a positioning component for fixing the contact assembly is integrally disposed in the groove. A sealing element for covering and sealing the contact assembly is installed on the groove.

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] Since the terminal block is electrically connected to the contact assembly and the locking assembly is electrically connected to the terminal block, external wires can be electrically connected to the contact assembly through the locking assembly without having to guide the contact assembly through the housing and expose it. The locking assembly can quickly and securely lock external wires without the need for wire-to-wire connection, thus improving installation efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a rear view of the present invention;

[0019] Figure 3 This is an exploded view of the present invention;

[0020] Figure 4 This is a cross-sectional view of the connector.

[0021] Figure 5 This is a cross-sectional view of another embodiment of the connector.

[0022] Explanation of the labels in the diagram:

[0023] 1. Housing; 2. Sensor head; 3. Contact assembly; 4. Wiring latch; 41. Terminal block; 42. Latch assembly; 43. Housing; 44. Cable inlet slot; 45. Guide slot; 46. Spring; 421. Guide component; 422. Conductive terminal; 423. Adjusting component; 425. Angled surface; 426. Protrusion; 5. Groove; 6. Positioning slot; 7. External wire; 8. Conductive base; Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] refer to Figure 1-4 A limit switch with quick wiring capability includes a housing 1, a sensing head 2, and a contact assembly 3 installed inside the housing 1. A wiring latch 4 is mounted on the housing 1. The wiring latch 4 has a terminal 41 electrically connected to the contact assembly 3, and a latching component 42 for locking and fixing an external wire 7. The latching component 42 is electrically connected to the terminal 41. It is understood that the contact assembly 3 is the core component for the on / off function of the internal control circuit of the limit switch; this is existing technology and will not be elaborated upon here. The terminal 41 is the component that electrically connects the contact assembly 3 and the latching component 42, and can be, for example, a wire, a metal sheet, or a circuit board, but is not limited to these. The latching component 42 is the component that locks and fixes the external wire 7, thereby electrically connecting it to the contact assembly 3. It can be, for example, a slot-type latching structure, a spring-loaded latching structure, a threaded latching structure, etc., but is not limited to these. With this configuration, the external wire 7 can be locked in place by the locking component 42 during use, thus achieving electrical connection between the external wire 7 and the contact component 3. The operation is simple and convenient, requiring no wiring, and the overall structure without wires is compact and portable.

[0026] In some embodiments, the housing 1 has a positioning groove 6, and the wiring clamp 4 further includes a housing 43, which is embedded in the positioning groove 6. The outer side of the housing 43 has several wire inlet slots 44, and the clamping assembly 42 is installed in the wire inlet slots 44. It is understood that the housing 43 and the housing 1 can be integrally formed; here, an assembly structure is used where the positioning groove 6 and the housing 1 are interlocked. The wire inlet slots 44 are for external wires 7 to pass through and connect to the clamping assembly 42; they can be, for example, circular or square, but are not limited to these shapes. This facilitates the installation of the wiring clamp 4, and multiple wire inlet slots 44 can correspondingly clamp multiple wires.

[0027] In some embodiments, the engaging assembly 42 includes: a guide member 421, elastically mounted at the bottom of the wire inlet groove 44, with a conductive terminal 422 mounted at one end of the guide member 421 away from the bottom of the wire inlet groove 44. In a free state, the guide member 421 drives the conductive terminal 422 to engage the external wire 7 at the top of the wire inlet groove 44; and an adjusting member 423, linked with the guide member 421, thereby causing the guide member 421 to retract and causing the conductive terminal 422 to terminate the engagement of the external wire 7. It is understood that the guide member 421 is a component that guides the movement of the housing 1, such as a shaft hole guide fit or a slide rail guide fit, but not limited to these. The elastic guide can be achieved using an elastic component such as a spring 46 or a spring sheet. The adjusting member 423 is a component that drives the guide member 421 to move. Figure 4 Specifically, a guide groove 45 can be provided at the bottom of the inlet slot 44. The guide member 421 is elastically guided and installed in the guide groove 45 by a spring 46. The adjusting member 423 is installed at the end of the guide member 421 away from the conductive terminal 422 and guides a pull rod that passes through the guide groove 45. In use, pulling the pull rod moves the guide member 421, thus engaging and disengaging the conductive terminal 422 with the external wire 7. (Reference) Figure 5 Alternatively, the adjusting member 423 can be horizontally guided and installed within the inlet slot 44, with one end extending outside the slot opening and the other end having an inclined surface 425. The guide member 421, near the adjusting member 423, has a protrusion 426 that abuts against the inclined surface 425. Pressing the adjusting member 423 into the inlet slot 44 causes the inclined surface 425 to engage with the protrusion 426, thereby moving the guide member 421 downwards. Here, pressing the adjusting member 423 to the right causes the inclined surface 425 to press against the protrusion 426, causing the guide member 421 to move downwards, separating the conductive terminal 422 from the top of the inlet slot 44. Upon release, due to the elasticity of the spring 46, the guide member 421 automatically moves the conductive terminal 422 upwards, securing the external wire 7 and pushing the adjusting member 423 to the left to reset.

[0028] In some embodiments, a conductive base 8 corresponding to the conductive terminal 422 is installed on the top of the cable inlet slot 44, and the terminal block 41 is connected to the conductive base 8 and / or the conductive terminal 422. It is understood that when an external wire 7 is inserted into the cable inlet slot 44, it is engaged and fixed between the conductive base 8 and the conductive terminal 422. Here, the conductive base 8 can be made of conductive material and connected to the terminal block 41, while the conductive terminal 422 can be made of non-conductive material. Alternatively, the conductive terminal 422 can also be made of conductive material and connected to the terminal block 41, or both the conductive terminal 422 and the conductive base 8 can be made of conductive material, and the terminal block 41 can be electrically connected to one or both of them.

[0029] In some embodiments, reference Figure 2-3The outer casing 1 has a groove 5, and a positioning component for fixing the contact assembly 3 is integrally set in the groove 5. A sealing element is installed on the groove 5 to cover and seal the contact assembly 3. It can be understood that the positioning component can be various intersecting slot structures or intersecting limiting plate structures, etc., which are mainly used to fix and install the contact assembly 3. The positioning component can be integrally formed by molding. The sealing element is a component that closes the entire groove 5 and thus seals the contact assembly 3. For example, it can be a cover plate or a glue filler, but it is not limited to these.

[0030] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A limit switch with quick wiring capability, comprising a housing (1), a sensing head (2), and a contact assembly (3) mounted within the housing (1), characterized in that, A wiring clamp (4) is installed on the housing (1). The wiring clamp (4) has a terminal (41) electrically connected to the contact assembly (3) and a clamping assembly (42) for clamping and fixing external wires (7). The clamping assembly (42) is electrically connected to the terminal (41).

2. The limit switch with quick wiring according to claim 1, characterized in that: The outer casing (1) is provided with a positioning groove (6), and the wiring clamp (4) also includes a housing (43), which is embedded in the positioning groove (6), and the outer side of the housing (43) is provided with a plurality of wire inlet grooves (44), and the clamping assembly (42) is installed in the wire inlet grooves (44).

3. A limit switch with quick wiring according to claim 2, characterized in that: The engagement assembly (42) includes: The guide (421) is elastically guided and installed at the bottom of the inlet groove (44), and a conductive terminal (422) is installed at one end of the guide (421) away from the bottom of the inlet groove (44). In the free state, the guide (421) drives the conductive terminal (422) to clamp the external wire (7) at the top of the inlet groove (44). The adjusting member (423) is linked with the guide member (421), thereby driving the guide member (421) to retract so that the conductive terminal (422) ends the engagement with the external wire (7).

4. A limit switch with quick wiring according to claim 3, characterized in that: The bottom of the inlet slot (44) is provided with a guide slot (45). The guide member (421) is elastically guided and installed in the guide slot (45) by a spring (46). The adjusting member (423) is a pull rod installed at the end of the guide member (421) away from the conductive terminal (422) and guided out of the guide slot (45).

5. A limit switch with quick wiring according to claim 3, characterized in that: The adjusting member (423) is horizontally guided and installed in the inlet groove (44), with one end extending outside the groove opening of the inlet groove (44) and the other end provided with an inclined surface (425). The guide member (421) is provided with a protrusion (426) that abuts against the inclined surface (425) on the side near the adjusting member (423). Pressing the adjusting member (423) into the inlet groove (44) causes the inclined surface (425) to cooperate with the protrusion (426), thereby driving the guide member (421) to move downward.

6. A limit switch with quick wiring according to claim 3, characterized in that: The top of the inlet slot (44) is equipped with a conductive base (8) corresponding to the conductive terminal (422), and the terminal (41) is connected to the conductive base (8) and / or the conductive terminal (422).

7. A limit switch with quick wiring according to claim 1, characterized in that: The outer shell (1) has a groove (5) and a positioning component for fixing the contact assembly (3) is integrally provided in the groove (5). A sealing element for covering and sealing the contact assembly (3) is installed on the groove (5).

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