Time relay

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a time relay. The time relay comprises a shell and a hoop. Wherein the shell penetrates through a through hole of the mounting panel, one end of the shell is provided with a limiting flange, the limiting flange is used for abutting against a first plate face of the mounting panel, the limiting flange is provided with an anti-rotation boss, and the anti-rotation boss is used for being connected with an anti-rotation groove in the mounting panel in a clamped mode; the clamp comprises a clamp body, the clamp body is arranged on the shell in a sleeving mode, one end of the clamp body is used for abutting against the second plate face of the installation panel, and the second plate face and the first plate face are oppositely arranged. According to the time relay, the time relay is mounted on the mounting panel through the hoop, so that the time relay is relatively simple to mount and dismount and relatively long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a time relay. Background Art

[0002] A time relay is an electrical component used in a circuit with a lower voltage or a smaller current to connect or disconnect a circuit with a higher voltage or a larger current. A traditional time relay includes a cover, a housing, a plug, and a circuit board module. The plug and the circuit board module are arranged in the housing, and the cover is snap-fitted to the housing.

[0003] When the time relay is in use, it is generally installed on the installation panel of the system. Specifically, a through hole is opened on the installation panel, the shell is inserted into the through hole, and the cover, shell and installation panel are fixed together by bolts and nuts. Since multiple bolts are generally set for fixing, the installation and disassembly process is complicated, and the bolts and nuts are easy to rust after long-term use, making it difficult to disassemble the time relay.

[0004] Therefore, it is urgent to propose a time relay to solve the above problems. Utility Model Content

[0005] The utility model provides a time relay. The time relay is installed on a mounting panel through a clamp, so the installation and disassembly are relatively simple and the service life is relatively long.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Time relay, including:

[0008] A shell is passed through a through hole of the mounting panel, one end of the shell is provided with a limit flange, the limit flange is used to abut against the first plate surface of the mounting panel, the limit flange is provided with an anti-rotation boss, and the anti-rotation boss is used to engage with the anti-rotation groove on the mounting panel;

[0009] The clamp comprises a clamp body, wherein the clamp body is sleeved on the shell, and one end of the clamp body is used to abut against the second plate surface of the installation panel, and the second plate surface is arranged opposite to the first plate surface.

[0010] Optionally, an elastic support arm that can elastically move closer to or away from the clamp body is provided at one end of the clamp body, and the elastic support arm is used to elastically press against the second plate surface.

[0011] Optionally, a protrusion is provided on the free end of the elastic support arm, and the protrusion is used to press against the second plate surface.

[0012] Optionally, the elastic support arms are provided in plurality, and the free ends of the plurality of elastic support arms are arranged at intervals along the circumference of the clamp body; or,

[0013] The elastic support arms are provided in plurality, and every two elastic support arms form a group, and the free ends of the two elastic support arms in each group are arranged opposite to each other along the circumferential direction of the clamp body.

[0014] Optionally, a first clamping groove is provided on the outer peripheral surface of the shell, and a clamping hook is further provided on the clamp body, and the clamping hook is clamped in the first clamping groove.

[0015] Optionally, a plurality of the first card slots are provided, and the plurality of the first card slots are arranged in sequence along the axial direction of the housing, and the hook can be selectively engaged with one of the first card slots.

[0016] Optionally, the first card slot has a triangular cross-section.

[0017] Optionally, the time relay further includes:

[0018] A plug is installed in the housing, the plug comprises a base, and a pin and a limiting column arranged on the base, a plurality of limiting columns are arranged along the circumference of the base, each of the limiting columns is provided with a first limiting groove, and a plurality of the first limiting grooves enclose a limiting space;

[0019] The circuit module is arranged in the shell, and the circuit module includes a first circuit board. The first circuit board is installed in the limiting space, and the first circuit board is electrically connected to the pin.

[0020] Optionally, the time relay further comprises a face cover, a first buckle is provided on the face cover, a second buckle is further provided on the limit flange, and the second buckle is buckled with the first buckle.

[0021] Optionally, a window is provided on the surface cover, and a first rib is provided around the outer edge of the window on a side of the window close to the shell, the first rib forms a second limiting groove, a nameplate arranged in the shell is inserted into the second limiting groove, and a second rib is provided on the inner peripheral wall of the window on a side of the window away from the shell, and the second rib abuts against the edge of the upper surface of the nameplate.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a time relay, including a shell and a clamp. The steps of installing the time relay on the installation panel of the system are: inserting the shell into the through hole of the installation panel, and pushing the shell until the limit flange on the shell abuts against the first board surface of the installation panel, and rotating the shell in the process of pushing the shell to ensure that when the limit flange abuts against the first board surface, the anti-rotation boss is stuck in the anti-rotation groove of the installation panel; then the clamp body is put on the other end of the shell, and one end of the clamp body abuts against the second board surface of the installation board surface, and the installation of the time relay can be completed. Compared with the traditional time relay fixed by bolt and nut assembly, the installation and disassembly process of the time relay is simpler, the installation and disassembly efficiency of the time relay can be improved, and the service life is longer and not easy to be damaged.

[0024] By setting an anti-rotation boss to engage with the anti-rotation groove on the installation panel, the housing can be prevented from rotating around the axis of the installation hole to limit the rotational freedom of the housing. A relatively simple structure is adopted to improve the installation stability of the above-mentioned time relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0026] Figure 1 It is an exploded view of a time relay provided by an embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a time relay provided by an embodiment of the utility model;

[0028] Figure 3 It is an assembly diagram of a time relay and a mounting panel from a perspective provided by an embodiment of the utility model;

[0029] Figure 4 It is an assembly diagram of a time relay and a mounting panel from another perspective provided by an embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of the structure of the installation panel;

[0031] Figure 6 It is a schematic diagram of the structure of the housing under a viewing angle provided by an embodiment of the utility model;

[0032] Figure 7 is Figure 6 A local enlarged view of point A;

[0033] Figure 8 It is a schematic diagram of the structure of the clamp provided by the embodiment of the utility model;

[0034] Fig. 9 It is a schematic diagram of the structure of the face cover provided by the embodiment of the utility model;

[0035] Fig.10 It is an assembly diagram of a nameplate, a circuit module and a plug provided in an embodiment of the utility model;

[0036] Fig.11 It is a structural schematic diagram of a plug provided by an embodiment of the utility model;

[0037] Fig.12 is a schematic structural diagram of a housing from another perspective provided by an embodiment of the utility model;

[0038] Fig.13 It is a partial schematic diagram of an assembly diagram of a housing and a plug provided in an embodiment of the utility model;

[0039] Fig.14 It is an exploded view of the nameplate and the circuit module provided in the embodiment of the utility model.

[0040] In the figure:

[0041] 10. Installation panel; 11. First panel surface; 12. Second panel surface; 13. Through hole; 14. Anti-rotation groove;

[0042] 100, housing; 110, limiting flange; 120, anti-rotation boss; 130, first slot; 140, second slot; 150, limiting arm; 151, column; 152, limiting rod; 153, reinforcing column; 161, notch; 162, notch opening;

[0043] 200, clamp; 210, clamp body; 220, elastic arm; 221, convex block; 230, hook; 231, clamp convex;

[0044] 300, plug; 310, base; 320, pin; 330, limit column; 331, first limit groove; 340, ear piece; 341, front end boss; 342, rear end boss; 343, transition surface; 344, guide surface; 350, first buckle body; 351, slide groove; 352, first buckle hole;

[0045] 400, circuit module; 410, first circuit board; 411, wire; 420, second circuit board; 421, second buckle; 422, third buckle; 430, third circuit board; 431, fourth buckle; 432, fifth buckle;

[0046] 500, cover; 510, first buckle; 520, window; 521, first retaining edge; 522, second retaining edge; 530, installation mark;

[0047] 600, nameplate; 610, connection terminal; 620, second buckle body; 621, second buckle hole. DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] 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.

[0051] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships 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.

[0052] like Figure 1-Figure 5 As shown, this embodiment provides a time relay, which is installed on the installation panel 10 through a clamp 200. The installation and disassembly are relatively simple and the service life is relatively long.

[0053] Specifically, the time relay includes a housing 100 and a clamp 200. The housing 100 is inserted into the through hole 13 of the mounting panel 10, and a limiting flange 110 is provided at one end of the housing 100. The limiting flange 110 is used to abut against the first plate surface 11 of the mounting panel 10. The limiting flange 110 is provided with an anti-rotation boss 120, and the anti-rotation boss 120 is used to clamp with the anti-rotation groove 14 on the mounting panel 10 to limit the rotation of the housing 100. The clamp 200 includes a clamp body 210, which is sleeved on the housing 100, and one end of the clamp body 210 abuts against the second plate surface 12 of the mounting panel 10, and the second plate surface 12 is arranged opposite to the first plate surface 11.

[0054] Continue to see Figure 5 The anti-rotation groove 14 can be set on the inner wall of the through hole 13.

[0055] The steps for installing the above-mentioned time relay on the installation panel 10 of the system are as follows:

[0056] Insert the housing 100 into the through hole 13 of the mounting panel 10, and push the housing 100 until the limiting flange 110 on the housing 100 abuts against the first plate surface 11 of the mounting panel 10, and rotate the housing 100 in the process of pushing the housing 100 to ensure that when the limiting flange 110 abuts against the first plate surface 11, the anti-rotation boss 120 is inserted into the anti-rotation groove 14 of the mounting panel 10;

[0057] Then, the clamp body 210 is put on the other end of the housing 100, and one end of the clamp body 210 is made to abut against the second board surface 12 of the installation board, so that the installation of the time relay is completed.

[0058] Compared with the traditional time relay fixed by bolt and nut assembly, the time relay provided by this embodiment has simpler installation and removal procedures, can improve the installation and removal efficiency of the time relay, and has a long service life and is not easy to be damaged. In addition, by providing the anti-rotation boss 120 to engage with the anti-rotation groove 14 on the installation panel 10, the housing 100 can be prevented from rotating around the axis of the installation hole to limit the rotational freedom of the housing 100, and a relatively simple structure is adopted to improve the installation stability of the above-mentioned time relay.

[0059] Optionally, in this embodiment, both opposite ends of the limiting flange 110 are provided with anti-rotation bosses 120, and each anti-rotation boss 120 is provided with an anti-rotation groove 14. In other embodiments, the number and arrangement of the anti-rotation bosses 120 may be other, and may be arranged according to actual needs, and this application does not make specific limitations.

[0060] Furthermore, if Figure 1-Figure 3 , Figure 6-Figure 8As shown, the outer circumferential surface of the housing 100 is provided with a first clamping groove 130, and the clamp body 210 is also provided with a clamping hook 230, which is clamped in the first clamping groove 130. The clamp body 210 is fixed to the housing 100 by clamping, the connection is stable and reliable, the structure is simple, and the installation and removal of the clamp 200 are convenient.

[0061] In this embodiment, continue to see Figure 8 The hook 230 is provided with a protrusion 231 on one side facing the housing 100 , and the hook 230 is engaged with the first slot 130 through the protrusion 231 . The shape of the protrusion 231 matches the shape of the first slot 130 .

[0062] Furthermore, in the present embodiment, first card slots 130 are provided on both symmetrical sides of the axis of the housing 100, and a hook 230 is provided for each first card slot 130. In other embodiments, the number and position of the first card slots 130 may be other, for example, three first card slots 130 are provided, and the three first card slots 130 are provided at 120° intervals along the circumference of the housing 100, etc., and the settings can be selected according to actual needs, and the present application does not make specific limitations. By providing multiple first card slots 130 to cooperate with the hook 230, the connection strength between the clamp 200 and the housing 100 can be improved, thereby improving the reliability of the above-mentioned time relay installed on the installation panel 10.

[0063] Preferably, continue to see Figure 7 , a plurality of first card slots 130 are provided, and the plurality of first card slots 130 are arranged in sequence along the axial direction of the housing 100. When installing the clamp 200, a suitable first card slot 130 and a card hook 230 can be selected for clamping according to the thickness of the installation panel 10 and the clamping force requirement of the limit flange 110 and the clamp body 210 on the installation panel 10. That is, by providing a plurality of first card slots 130, the above-mentioned time relay can match installation panels 10 of different thicknesses, thereby improving the universality of the above-mentioned time relay.

[0064] Optionally, continue to see Figure 7 In this embodiment, the cross section of the first card slot 130 is triangular. The first card slot 130 of this shape is relatively simple to process and has a better card connection effect. Of course, in other embodiments, the shape of the first card slot 130 can also be set to other shapes, which can be selected according to actual needs, and this application does not make specific limitations.

[0065] Further, see Figure 2 , Figure 3 and Figure 8One end of the clamp body 210 is provided with an elastic arm 220 that can be elastically moved toward or away from the clamp body 210, and the elastic arm 220 is used to elastically press against the second plate surface 12. After the clamp 200 is installed on the housing 100, it should be ensured that the elastic arm 220 is elastically close to the clamp body 210, so that the elastic arm 220 can store elastic potential energy, and elastically press against the second plate surface 12 through the elastic potential energy, thereby improving the installation stability of the above-mentioned time relay.

[0066] Optionally, a plurality of elastic arms 220 may be provided. In one possible embodiment, the free ends of the plurality of elastic arms 220 may be arranged at intervals. In another possible embodiment, two elastic arms 220 may be grouped together, a plurality of elastic arms 220 may be arranged along the circumference of the housing 100, and the free ends of the two elastic arms 220 in the same group may be arranged opposite to each other along the circumference of the clamp body 210.

[0067] It should be noted that the free end of the elastic arm 220 refers to the end of the elastic arm 220 abutting against the second plate surface 12 .

[0068] Preferably, continue to see Figure 2 , Figure 3 and Figure 8 A protrusion 221 is provided on the free end of the elastic arm 220, and the protrusion 221 is used to press against the second plate surface 12. By providing the protrusion 221, the elastic arm 220 can achieve reliable pressing against the second plate surface 12 with a small degree of deformation.

[0069] Optionally, the protrusion 221 and the elastic support arm 220 may be an integrated structure for ease of processing.

[0070] Optionally, the elastic support arm 220 and the clamp body 210 may be an integrated structure for ease of processing.

[0071] Furthermore, if Figure 1 , Figure 4 , Figure 6 and Fig. 9 As shown, the time relay further comprises a cover 500, a buckle is provided on the cover 500, and a second slot 140 is provided on the limit flange 110, and the second slot 140 is engaged with the buckle. The cover 500 and the housing 100 are assembled by snapping, which can ensure the connection reliability between the cover 500 and the housing 100 and simplify the installation process.

[0072] Optionally, in this embodiment, first buckles 510 are provided at opposite ends of the inner wall of the inner side of the cover 500, each first buckle 510 is provided with a corresponding second slot 140, and multiple first buckles 510 can be provided at intervals on the inner wall of the inner side of the cover 500. The specific arrangement can be made according to the installation requirements, and this application does not make specific limitations.

[0073] Further, see Figure 1 , Figure 4 and Fig. 9 The above-mentioned time relay also includes a nameplate 600, which is arranged in the housing 100 and close to the cover 500. In order to expose some wiring terminals 610 on the nameplate 600, corresponding windows 520 are provided on the cover 500.

[0074] Specifically, in this embodiment, on the side of the window 520 close to the housing 100, a first rib 521 is provided around the outer edge of the window 520, and the first rib 521 forms a second limiting groove, and the nameplate 600 is inserted into the second limiting groove. By providing the second limiting groove, the installation position of the nameplate 600 can be further limited, the installation stability of the nameplate 600 is improved, and the structure is simple and easy to assemble.

[0075] In addition, on the side of the window 520 away from the housing 100, a second rib 522 is provided on the inner peripheral wall of the window 520, and the second rib 522 abuts against the upper surface edge of the nameplate 600. By providing the second rib 522, the movement of the nameplate 600 along the axial direction of the housing 100 can be limited, so as to prevent the nameplate 600 from falling from the window 520, and further improve the stability of the installation of the nameplate 600.

[0076] Optionally, in this embodiment, second retaining edges 522 are provided on all inner walls of the window 520. In other embodiments, the second retaining edges 522 may be provided at other locations, such as providing the second retaining edges 522 on two opposite inner walls of the window 520, etc., according to actual needs, and this application does not make any specific limitation.

[0077] Further, see Figure 1 and Figure 4 A mounting mark 530 is also provided on the side of the face cover 500 facing away from the housing 100 , which is used to guide the mounting direction of the face cover 500 to ensure the correctness of the mounting of the face cover 500 .

[0078] Furthermore, if Figure 1 , Fig.10 and Fig.11As shown, the above-mentioned time relay also includes a plug 300 and a circuit module 400. The plug 300 is installed on the housing 100. The plug 300 includes a base 310 and a pin 320 and a limit column 330 arranged on the base 310. The limit column 330 is provided with a plurality of limit columns 330 along the circumference of the base 310. Each limit column 330 is provided with a first limit groove 331. The plurality of first limit grooves 331 surround a limit space. The circuit module 400 is arranged in the housing 100. The circuit module 400 includes a first circuit board 410. The first circuit board 410 is installed in the limit space, and the first circuit board 410 is electrically connected to the pin 320. The first circuit board 410 is fixed by the first limit groove 331 on the limit column 330. While ensuring the connection strength, the installation difficulty of the first circuit board 410 can be reduced, which is conducive to improving the assembly efficiency of the above-mentioned time relay.

[0079] Optionally, in this embodiment, the first circuit board 410 is electrically connected to the pin 320 through a wire 411 .

[0080] Furthermore, if Figure 10-13 As shown, the base 310 is also provided with an ear piece 340, and the ear piece 340 includes a front end boss 341 and a rear end boss 342. The thickness of the front end boss 341 is lower than the thickness of the rear end boss 342, and the front end boss 341 has a certain elastic deformation ability. An inwardly concave arc-shaped transition surface 343 is provided between the surfaces of the front end boss 341 and the rear end boss 342, and the end surface of the rear end boss 342 is provided with an arc-shaped guide surface 344.

[0081] Correspondingly, a limiting arm 150 is provided on the inner bottom wall of the shell 100, and the limiting arm 150 includes a column 151 vertically fixed to the bottom wall of the shell 100, a limiting rod 152 parallel to the bottom wall of the shell 100 is provided at the top of the column 151, and a reinforcing column 153 is provided at the top of the limiting rod 152.

[0082] A notch for accommodating the ear piece 340 is provided on the bottom wall of the housing 100 . The portion of the notch facing the limiting rod 152 forms a slot 161 , and the remaining portion forms a notch opening 162 . The length of the notch opening 162 is greater than that of the front end boss 341 .

[0083] During installation, the plug 300 is inserted into the housing 100 and rotated so that the rear end boss 342 of the ear piece 340 is screwed into the notch 161 between the limiting clamp arm 150 and the bottom wall of the housing 100. In the process of the rear end boss 342 of the ear piece 340 being screwed into the notch 161, the end of the front end boss 341 away from the rear end boss 342 will be tilted upward due to the sinking of the rear end boss 342, and when the rear end boss 342 is installed in place, the front end boss 341 enters the notch opening 162, and at this time, the front end boss 341 is stuck in the notch opening 162 under the action of its own elastic restoring force. In this way, the base 310 and the housing 100 can be reliably connected. The connection structure between the ear piece 340 of the plug 300 and the limiting clamp arm 150 on the housing 100 is simple, reliable, and has high assembly efficiency.

[0084] Furthermore, if Fig.10 , Fig.11 and Fig.14 As shown, the circuit module 400 also includes a second circuit board 420 and a third circuit board 430 respectively arranged at opposite ends of the first circuit board 410, and the lower part and upper part of the second circuit board 420 are respectively provided with a second buckle 421 and a third buckle 422, and the lower part and upper part of the third circuit board 430 are respectively provided with a fourth buckle 431 and a fifth buckle 432.

[0085] The base 310 is also provided with a plurality of first buckle bodies 350, and the second buckle 421 and the fourth buckle 431 are respectively buckled to the corresponding first buckle bodies 350. The base 310 is connected to the second circuit board 420 and the third circuit board 430 by the buckling connection method, which has a simple structure, is easy to assemble, and has high connection reliability.

[0086] Specifically, in this embodiment, the first buckle body 350 is provided with a slide groove 351 and a first buckle hole 352, and the second buckle 421 slides into the first buckle body 350 through the slide groove 351 and snaps into the first buckle hole 352. Similarly, the fourth buckle 431 slides into the first buckle body 350 through the slide groove 351 and snaps into the first buckle hole 352.

[0087] Further, see Fig.10 and Fig.14 The nameplate 600 is provided with a plurality of second buckle bodies 620; the third buckle 422 and the fifth buckle 432 are respectively clamped to the corresponding second buckle bodies 620. The nameplate 600 is connected to the second circuit board 420 and the third circuit board 430 by clamping. The structure is simple, the assembly is convenient, and the connection reliability is high.

[0088] Specifically, the second buckle body 620 is provided with a second buckle hole 621 , and the third buckle 422 and the fifth buckle 432 are respectively buckled in the corresponding second buckle holes 621 .

[0089] 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 time relay, characterized in that: include: A housing (100) is provided through a through hole (13) of a mounting panel (10); one end of the housing (100) is provided with a limiting flange (110); the limiting flange (110) is used to abut against a first plate surface (11) of the mounting panel (10); an anti-rotation boss (120) is provided on the limiting flange (110); the anti-rotation boss (120) is used to engage with an anti-rotation groove (14) on the mounting panel (10); The clamp (200) comprises a clamp body (210), wherein the clamp body (210) is sleeved on the housing (100), and one end of the clamp body (210) is used to abut against a second plate surface (12) of the mounting panel (10), wherein the second plate surface (12) is arranged opposite to the first plate surface (11).

2. The time relay according to claim 1, characterized in that: An elastic support arm (220) is provided at one end of the clamp body (210) and can be elastically moved closer to or farther away from the clamp body (210), and the elastic support arm (220) is used to elastically press against the second plate surface (12).

3. The time relay according to claim 2, characterized in that: A convex block (221) is provided on the free end of the elastic support arm (220), and the convex block (221) is used to press against the second plate surface (12).

4. The time relay according to claim 2, characterized in that: The elastic support arms (220) are provided in plurality, and the free ends of the plurality of elastic support arms (220) are arranged at intervals along the circumference of the clamp body (210); or, A plurality of the elastic support arms (220) are provided, and each two of the elastic support arms (220) form a group. The free ends of the two elastic support arms (220) in each group are arranged opposite to each other along the circumference of the clamp body (210).

5. The time relay according to claim 1, characterized in that: A first clamping groove (130) is provided on the outer peripheral surface of the shell (100), and a clamping hook (230) is also provided on the clamp body (210), and the clamping hook (230) is clamped in the first clamping groove (130).

6. The time relay according to claim 5, characterized in that: A plurality of the first card slots (130) are provided, and the plurality of the first card slots (130) are arranged in sequence along the axial direction of the housing (100), and the hook (230) can be selectively engaged with one of the first card slots (130).

7. The time relay according to claim 5, characterized in that: The cross section of the first slot (130) is triangular.

8. The time relay according to claim 1, characterized in that: The time relay also includes: A plug (300) is mounted on the housing (100), the plug (300) comprising a base (310) and a pin (320) and a limiting column (330) arranged on the base (310), a plurality of limiting columns (330) being arranged along the circumference of the base (310), each limiting column (330) being provided with a first limiting groove (331), and a plurality of the first limiting grooves (331) forming a limiting space; A circuit module (400) is arranged in the housing (100), and the circuit module (400) comprises a first circuit board (410). The first circuit board (410) is installed in the limiting space, and the first circuit board (410) is electrically connected to the plug pin (320).

9. The time relay according to any one of claims 1 to 8, characterized in that: The time relay further comprises a cover (500), a first buckle (510) is provided on the cover (500), a second buckle (140) is provided on the limit flange (110), and the second buckle (140) is buckled with the first buckle (510).

10. The time relay according to claim 9, characterized in that: The surface cover (500) is provided with a window (520), and on a side of the window (520) close to the outer shell (100), a first rib (521) is provided around the outer edge of the window (520), and the first rib (521) forms a second limiting groove, and a nameplate (600) arranged in the outer shell (100) is inserted into the second limiting groove, and on a side of the window (520) away from the outer shell (100), a second rib (522) is provided on the inner peripheral wall of the window (520), and the second rib (522) abuts against the edge of the upper surface of the nameplate (600).

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