Safety lock catch and contactor

Abstract

The utility model belongs to the technical field of contactors, and discloses a safety lock catch and a contactor, the safety lock catch is of a U-shaped structure, the safety lock catch comprises two side connecting rods and a middle connecting rod connected between the two side connecting rods, the opposite inner sides of the two side connecting rods are provided with first clamping parts, a first shell of a contactor body is provided with a first protruding part, and a second shell of the contactor body is provided with a second protruding part. A second shell of the auxiliary contact is provided with two second clamping parts, the second shell is sleeved with the safety lock catch, the two first clamping parts can be clamped to the two second clamping parts respectively, and the middle connecting rod can abut against the first protruding part for limiting so that the second shell can be limited to move relative to the first shell in the first direction. Therefore, the second shell is prevented from sliding out of the first shell. The safety lock catch can limit the second shell relative to the first shell in the first direction, so that the auxiliary contact is effectively prevented from falling off from the contactor body, the assembly of the first shell and the second shell is not influenced, and the safety of the contactor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to a safety lock and a contactor. Background Art

[0002] It is a common technical means for technicians in this field to provide auxiliary contacts on the contactor body to increase the contact points of the contactor body. The contactor body and the auxiliary contacts are mutually engaged to achieve the connection between the auxiliary contacts and the contactor body. However, in harsh application environments, such as frequent vibration conditions, after long-term vibration of the contactor, the connection between the contactor body and the auxiliary contacts becomes loose, and there is a risk that the auxiliary contacts will slip off the contactor body, which can easily cause the auxiliary contacts to fall and cause safety accidents. Utility Model Content

[0003] The utility model aims to provide a safety lock and a contactor, which can effectively prevent the auxiliary contact from sliding off the contactor body and improve safety.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A safety lock is used to connect a contactor body and an auxiliary contact, wherein the contactor body comprises a first shell, and the auxiliary contact comprises a second shell, the first shell and the second shell are clamped together, the safety lock comprises two side connecting rods and an intermediate connecting rod connected between the two side connecting rods, the safety lock is sleeved on the second shell, and first clamping portions are respectively provided on opposite sides of the two side connecting rods, the first clamping portion is used to correspondingly clamp with the second clamping portion on the second shell, and the intermediate connecting rod is used to abut with the first protrusion on the first shell in the first direction.

[0006] As an optional solution, the first raised portion is provided with a positioning groove, and the inner side of the intermediate connecting rod is provided with a positioning boss, and the positioning boss is used to be inserted into the positioning groove.

[0007] As an optional solution, the positioning grooves and the positioning bosses correspond one to one and two of each are provided.

[0008] As an optional solution, the second clamping portion is provided with a first clamping groove, the first clamping groove extends along the first direction, the first clamping portion includes an extension rod and a barb plate, the extension rod is connected to the inner side of the side connecting rod, the barb plate is connected to the extension rod and extends toward the middle connecting rod, and the barb plate is used to be inserted into the first clamping groove.

[0009] As an optional solution, a first inclined surface is provided on a side of the end of the barb plate facing the extension rod.

[0010] As an optional solution, a limiting boss is provided on the intermediate connecting rod, and a limiting groove is provided on the limiting boss. Among the three vertical extension plates arranged at intervals along the second direction on the second outer shell, the middle vertical extension plate is limited in the limiting groove, and the vertical extension plates on both sides are respectively limited on the two side surfaces of the limiting boss.

[0011] As an optional solution, the side link includes a first link, a second link, and a diagonal link connected to the first link and the second link, the first link is connected to the middle link, and the first clamping portion is connected to the end of the second link.

[0012] As an optional solution, a second inclined surface is provided on the inner side of the connection between the intermediate link and the side link.

[0013] As an optional solution, the safety lock buckle is an integrated structure, and the material of the safety lock buckle is plastic material.

[0014] A contactor comprises a contactor body, an auxiliary contact and the safety lock described in any one of the above solutions.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a safety lock catch, which is a U-shaped structure. The safety lock catch includes two side connecting rods and an intermediate connecting rod connected between the two side connecting rods. The opposite inner sides of the two side connecting rods are both provided with a first clamping portion. The first shell of the contactor body is provided with a first protruding portion. The second shell of the auxiliary contact is provided with two second clamping portions. The safety lock catch can be sleeved on the second shell, and the two first clamping portions can be clamped with the two second clamping portions respectively. The intermediate connecting rod can abut against the first protruding portion along the first direction to limit the relative movement of the second shell relative to the first shell along the first direction, that is, to prevent the second shell from sliding off the first shell. The safety lock catch can limit the second shell relative to the first shell in the first direction, effectively prevent the auxiliary contact from falling off the contactor body, and does not affect the assembly of the first shell and the second shell, thereby improving the safety of the contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a contactor provided in an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the safety lock provided by the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first housing involved in the embodiment of the utility model Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the structure of the first housing involved in the embodiment of the utility model Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the structure of the second housing involved in the embodiment of the utility model Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the structure of the second housing involved in the embodiment of the utility model Figure 2 .

[0023] In the figure:

[0024] 1. Safety lock; 11. Side connecting rod; 111. First connecting rod; 112. Second connecting rod; 113. Oblique rod; 12. Intermediate connecting rod; 121. Positioning boss; 1211. Second avoidance groove; 122. Limiting boss; 1221. Limiting groove; 123. Second inclined surface; 13. First clamping part; 131. Extension rod; 132. Barb plate; 1321. First inclined surface;

[0025] 2. contactor body; 21. first housing; 211. first protrusion; 2111. positioning groove; 2112. clamping plate; 212. second protrusion; 2121. first avoidance groove;

[0026] 3. Auxiliary contact; 31. Second housing; 311. First clamping slot; 312. Vertical extension plate; 313. Second clamping slot. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] 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 or a detachable 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.

[0029] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0031] like Figure 1-Figure 6 As shown, a contactor provided by an embodiment of the utility model includes a contactor body 2 and an auxiliary contact 3, wherein the contactor body 2 includes a first housing 21, and the auxiliary contact 3 includes a second housing 31, wherein the second housing 31 can be slidably engaged with the first housing 21 from left to right along a first direction, so that the second housing 31 and the first housing 21 are engaged with each other, and the contactor body 2 and the auxiliary contact 3 are distributed along a third direction (i.e., the Z-axis direction). In order to prevent the second housing 31 from sliding out of the first housing 21 from right to left along the first direction (i.e., the X-axis direction) due to vibration, the contactor also includes a safety lock 1 provided by the utility model, wherein the safety lock 1 is connected between the contactor body 2 and the auxiliary contact 3 to prevent the auxiliary contact 3 from falling off the contactor body 2.

[0032] like Figure 2 As shown, the safety lock buckle 1 is a U-shaped structure. The safety lock buckle 1 includes two side links 11 and an intermediate link 12 connected between the two side links 11. The opposite inner sides of the two side links 11 are provided with a first clamping portion 13. The first shell 21 is provided with a first protrusion 211. The second shell 31 is provided with two first clamping grooves 311 spaced apart along the second direction. The extension direction of the first clamping grooves 311 is the same as the first direction. When the second shell 31 is clamped on the first shell 21, the safety lock buckle 1 can be sleeved on the second shell 31 from right to left along the first direction toward the lower part of the first shell 21. The opening of the safety lock buckle 1 faces the left side along the first direction, and the two first clamping portions 13 can be respectively clamped in the two first clamping grooves 311. The intermediate link 12 can abut and limit with the first protrusion 211 to limit the second shell 31 from right to left relative to the first shell 21 along the first direction.

[0033] The safety lock 1 can limit the second housing 31 relative to the first housing 21 in a first direction, effectively preventing the auxiliary contact 3 from falling from the contactor body 2 without affecting the assembly of the first housing 21 and the second housing 31, thereby improving the safety of the contactor.

[0034] like Figure 3-Figure 6 As shown, the first protrusion 211 is provided with a clamping plate 2112 on both sides along the second direction (i.e., the Y-axis direction), and the second shell 31 is also provided with a third clamping portion on both sides along the second direction. The third clamping portion and the second clamping portion are arranged at intervals along the first direction, the second clamping portion is provided with a first clamping groove 311, and the third clamping portion is provided with a second clamping groove 313. Two second protrusions 212 are also provided on the first shell 21. The two second protrusions 212 are arranged at intervals along the second direction, and the second protrusions 212 and the first protrusions 211 are arranged at intervals along the first direction. The opposite sides of the two second protrusions 212 are provided with a first avoidance groove 2121 to form a plug-in portion. When the second shell 31 is clamped with the first shell 21, the plug-in portions on both sides can be respectively inserted into the two first clamping grooves 311, and the clamping plates 2112 on both sides can be respectively inserted into the two second clamping grooves 313, so as to realize the mutual clamping of the first shell 21 and the second shell 31.

[0035] Optionally, in order to further improve the installation firmness of the safety lock buckle 1, the first protrusion 211 is provided with a positioning groove 2111, and the inner side of the opening of the intermediate connecting rod 12 facing the safety lock buckle 1 is provided with a positioning boss 121. When the safety lock buckle 1 is connected to the second shell 31, the positioning boss 121 can be inserted into the positioning groove 2111.

[0036] The positioning grooves 2111 and the positioning bosses 121 are arranged one by one and two are arranged, the two positioning grooves 2111 are arranged at intervals along the second direction, and the two positioning bosses 121 can be respectively inserted into the two positioning grooves 2111, further improving the locking ability of the safety lock 1. The first direction and the second direction are perpendicular to each other.

[0037] In order to facilitate the insertion of the positioning boss 121 into the positioning groove 2111 , a second avoidance groove 1211 is opened in the middle of the positioning boss 121 , so that the positioning boss 121 can be elastically deformed when being inserted into the positioning groove 2111 .

[0038] Optionally, the first clamping portion 13 includes an extension rod 131 and a hook plate 132, the extension rod 131 is connected to the inner side of the side connecting rod 11, the hook plate 132 is connected to the extension plate and extends toward the middle connecting rod 12, and the first clamping groove 311 is extended along the first direction. When the safety lock 1 is sleeved on the second shell 31, the hook plate 132 can be limited in the first clamping groove 311.

[0039] Preferably, the safety lock buckle 1 is made of plastic material, and the safety lock buckle 1 itself has plastic elastic deformation. When installing the safety lock buckle 1, its plastic elastic deformation ability is utilized so that the safety lock buckle 1 can be quickly installed on the second shell 31, and after the barb plate 132 is limited in the first clamping groove 311, the middle connecting rod 12 cooperates with the first protrusion 211 to abut against the safety lock buckle 1, so that the safety lock buckle 1 is securely connected and not easy to disassemble.

[0040] In order to facilitate the hook plate 132 to be inserted into the first engaging groove 311 , a first inclined surface 1321 is provided at the end of the hook plate 132 facing the extension rod 131 . The first inclined surface 1321 enables the hook plate 132 to slide into the first engaging groove 311 more smoothly.

[0041] Optionally, a limiting boss 122 is further provided on the middle connecting rod 12, and a limiting groove 1221 is provided on the limiting boss 122. Three vertical extension plates 312 are arranged on the second shell 31 at intervals along the second direction. The middle vertical extension plate 312 among the three vertical extension plates 312 is limited in the limiting groove 1221, and the vertical extension plates 312 on both sides are respectively limited on the two side surfaces of the limiting boss 122 to further limit the second shell 31 along the second direction.

[0042] The side link 11 is a stepped rod, which includes a first link 111, a second link 112 and an oblique rod 113, wherein the oblique rod 113 is connected between the first link 111 and the second link 112, the first link 111 is connected to the middle link 12, and the extension rod 131 of the first clamping portion 13 is connected to the end of the second link 112. The structural design of the side link 11 can effectively improve the plastic deformation strength of the side link 11.

[0043] Furthermore, a second inclined surface 123 is provided on the inner side of the corner connection between the intermediate link 12 and the side link 11. The setting of the second inclined surface 123 can effectively increase the thickness of the corner connection between the intermediate link 12 and the side link 11, effectively reduce the probability of breakage, and improve the plastic deformation strength.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. 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 protection scope of the claims of the present invention.

Claims

1. A safety lock, used for connecting a contactor body (2) and an auxiliary contact (3), wherein the contactor body (2) comprises a first housing (21), the auxiliary contact (3) comprises a second housing (31), the first housing (21) and the second housing (31) are mutually engaged, and characterized in that: The safety lock buckle comprises two side connecting rods (11) and an intermediate connecting rod (12) connected between the two side connecting rods (11); the safety lock buckle (1) is sleeved on the second shell (31); two opposite sides of the two side connecting rods (11) are respectively provided with first clamping parts (13); the first clamping parts (13) are used to be correspondingly clamped with the second clamping parts on the second shell (31); the intermediate connecting rod (12) is used to abut against the first protrusion (211) on the first shell (21) in a first direction.

2. The safety lock according to claim 1, characterized in that: The first protruding portion (211) is provided with a positioning groove (2111), and the inner side of the intermediate connecting rod (12) is provided with a positioning boss (121), and the positioning boss (121) is used for being inserted into the positioning groove (2111).

3. The safety lock according to claim 2, characterized in that: The positioning grooves (2111) and the positioning bosses (121) correspond one to one and two of each are provided.

4. The safety lock according to claim 1, characterized in that: The second clamping portion is provided with a first clamping groove (311), and the first clamping groove (311) extends along the first direction. The first clamping portion (13) comprises an extension rod (131) and a barb plate (132), the extension rod (131) is connected to the inner side of the side connecting rod (11), the barb plate (132) is connected to the extension rod (131) and extends toward the middle connecting rod (12), and the barb plate (132) is used to be inserted into the first clamping groove (311).

5. The safety lock according to claim 4, characterized in that: A first inclined surface (1321) is provided on one side of the end of the barb plate (132) facing the extension rod (131).

6. The safety lock according to claim 1, characterized in that: A limiting boss (122) is provided on the intermediate connecting rod (12), and a limiting groove (1221) is provided on the limiting boss (122); among the three vertical extension plates (312) arranged at intervals along the second direction on the second housing (31), the middle vertical extension plate (312) is limited in the limiting groove (1221), and the vertical extension plates (312) on both sides are respectively limited on the two side surfaces of the limiting boss (122).

7. The safety lock according to claim 1, characterized in that: The side link (11) comprises a first link (111), a second link (112) and an oblique link (113) connected to the first link (111) and the second link (112); the first link (111) is connected to the intermediate link (12); and the first clamping portion (13) is connected to the end of the second link (112).

8. The safety lock according to claim 1, characterized in that: A second inclined surface (123) is provided on the inner side of the connection between the intermediate connecting rod (12) and the side connecting rod (11).

9. The safety lock according to claim 1, characterized in that: The safety lock buckle (1) is an integrated structure, and the material of the safety lock buckle (1) is a plastic material.

10. A contactor, characterized in that It comprises a contactor body (2), an auxiliary contact (3) and a safety lock (1) as claimed in any one of claims 1 to 9.

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