Time relay

Abstract

The utility model discloses a time relay, which comprises a shell and mounting seats arranged on the left side and the right side of the bottom of the shell, first clamping blocks are arranged at the inner side ends of the mounting seats, and is characterized in that the front ends and the rear ends of the left side and the right side of the bottom of the shell are respectively provided with an extending part extending downwards, and the inner walls of the extending parts on the same side are provided with opposite opening sliding grooves which transversely penetrate through the extending parts; the front side and the rear side of the installation base are provided with sliding strips capable of sliding along the open sliding grooves, the installation base is provided with a through hole, the inner wall of the inner side of the through hole is provided with outward and upward elastic pieces, and the bottom of the shell is provided with a plurality of clamping grooves allowing the elastic pieces to stretch into and abut against. According to the time relay, the elastic sheets arranged on the mounting seat are elastically abutted against and matched with the plurality of clamping grooves in the bottom of the shell, so that the mounting seat is quickly and effectively locked in a sliding process, the mounting seat is prevented from sliding due to vibration or external force in use, and the mounting stability and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a time relay. Background Technology

[0002] Time relays are crucial components in electrical control systems, often used for time-delay control. For example, Chinese utility model patent application CN202422524787.3 discloses a time relay comprising a housing with a mounting base snapped onto one end and a cover snapped onto the other. A connecting plate is fixed to the upper end of the mounting base, and a protective component is riveted to one side of the connecting plate, covering the housing. The protective component includes a flow guiding component and a drying component. The flow guiding component is riveted to the connecting plate and located above the housing. Two sets of drying components are bolted to both sides of the flow guiding component, respectively, and mate with both sides of the flow guiding component. A locking seat is slidably connected to the back of the mounting base. This type of time relay lacks an effective limiting and locking structure, making it prone to unstable installation or accidental detachment, affecting its reliability. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a time relay that is more stable and secure after installation.

[0004] Therefore, this utility model is implemented using the following technical solution:

[0005] A time relay includes a housing and mounting bases located on the left and right sides of the bottom of the housing. The mounting bases have a first locking block on their inner ends. The relay is characterized in that: the front and rear ends of the left and right sides of the bottom of the housing have downwardly extending extensions, and the inner walls of the extensions on the same side have opposite and transversely penetrating open grooves. The mounting bases have sliders on the front and rear sides that can slide along the open grooves, and the mounting bases have through holes. The inner walls of the through holes have outwardly and upwardly facing elastic pieces. The bottom of the housing has multiple locking grooves into which the elastic pieces can extend and abut.

[0006] Furthermore, the elastic sheet is generally arc-shaped, and the outer end of the elastic sheet has a rounded portion. The number of slots is two, including an inner slot and an outer slot, and there is a transition arc surface between the inner slot and the outer slot.

[0007] Furthermore, the mounting base has mounting holes on its outer side, which are exposed when the elastic sheet abuts against the outer slot.

[0008] Furthermore, the outer end face of the opening groove has a step, and the mounting base is provided with a limiting block that can rest against the step.

[0009] Furthermore, a second locking block is provided on the inner end of the extension on the left or right side of the housing.

[0010] By adopting the above technical solution, the assembly process of the mounting base is simplified and the installation efficiency is improved through the sliding cooperation between the slide bar and the open slide groove. The elastic plate set on the mounting base and the multiple slots on the bottom of the housing are elastically engaged to achieve quick and effective locking of the mounting base during the sliding process. When the mounting base slides along the open slide groove to the predetermined position, the elastic plate automatically engages in the corresponding slot under its own elastic force, generating a clear positioning sense and forming a mechanical lock, preventing the mounting base from sliding due to vibration or external force during use, and improving the stability and reliability of the installation. Attached Figure Description

[0011] The present invention includes the following figures:

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the separate structure of this utility model and a mounting base.

[0014] Reference numerals: 1. Housing; 2. Mounting base; 3. First locking block; 4. Extension; 5. Opening slide groove; 6. Slide bar; 7. Through hole; 8. Elastic sheet; 9. Arc portion; 10. Inner locking groove; 11. Outer locking groove; 12. Transition arc surface; 13. Mounting hole; 14. Step; 15. Limiting block; 16. Second locking block. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Refer to the above appendix Figure 1-2As shown, the time relay provided by this utility model includes a housing 1 and mounting seats 2 located on the left and right sides of the bottom of the housing 1. The mounting seats 2 have a first locking block 3 on their inner ends. The housing 1 has downwardly extending extensions 4 on both the front and rear ends of its bottom left and right sides. The inner walls of the extensions 4 on the same side have opposing and transversely penetrating opening grooves 5. The mounting seats 2 have sliding strips 6 on their front and rear sides that can slide along the opening grooves 5. The mounting seats 2 also have through holes 7, and the inner walls of the through holes 7 have outwardly and upwardly facing elastic pieces 8. The bottom of the housing 1 has multiple resilient elastic pieces. The elastic sheet 8 extends into and abuts against the slot. The elastic sheet 8 is generally arc-shaped, and the outer end of the elastic sheet 8 has an arc portion 9. There are two slots, including an inner slot 10 and an outer slot 11. There is a transition arc surface 12 between the inner slot 10 and the outer slot 11. The mounting base 2 is provided with a mounting hole 13 on its outer side. When the elastic sheet 8 abuts against the outer slot 11, the mounting hole 13 is exposed. The outer end face of the open slide 5 has a step 14. The mounting base 2 is provided with a limiting block 15 that can abut against the step 14. The inner end of the extension 4 on the left or right side of the housing 1 is provided with a second locking block 16.

[0017] The sliding engagement of the slide bar 6 and the open slide groove 5 simplifies the assembly process of the mounting base 2 and improves the installation efficiency. The elastic plate 8 set on the mounting base 2 and the multiple slots on the bottom of the housing 1 elastically abut against each other, so that the mounting base 2 can be quickly and effectively locked during the sliding process. When the mounting base 2 slides along the open slide groove 5 to the predetermined position, the elastic plate 8 automatically engages in the corresponding slot under its own elastic force, generating a clear positioning sense and forming a mechanical lock, preventing the mounting base 2 from sliding due to vibration or external force during use, and improving the stability and reliability of the installation.

[0018] The elastic piece 8 is designed as an arc with a rounded part 9 at the outer end, and a transition arc surface 12 is provided between the inner and outer slots 11. This makes the contact between the elastic piece 8 and the bottom surface of the housing 1 a smooth line contact when sliding, reducing sliding friction resistance and making the adjustment process more effortless and smooth. At the same time, the rounded part 9 can slide more smoothly over the transition arc surface 12 and be stably locked in the slot, which not only improves the operating feel, but also reduces the wear of the elastic piece 8 and the slot during long-term use and extends the service life.

[0019] By associating the position of the mounting hole 13 with the locking position (outer slot 11) of the elastic plate 8, it is ensured that when the mounting base 2 slides to the point where the elastic plate 8 is engaged in the outer slot 11 (i.e., the extreme working position pulled outward), the mounting hole 13 is fully exposed. This allows the time relay to be externally fixed when needed, providing a more flexible installation method to adapt to different application scenarios. After completing the position adjustment and pre-locking, the operator can immediately and without obstacles perform the screw tightening operation without additional alignment or searching for the mounting hole 13, which greatly improves the efficiency and convenience of on-site installation.

[0020] The cooperation between step 14 and limit block 15 effectively limits the sliding range of mounting base 2, preventing mounting base 2 from moving excessively inward or accidentally falling out, thus improving the stability and safety of the overall structure.

[0021] The inner end of the extension 4 on the left or right side of the housing 1 is provided with a second locking block 16, which cooperates with the first locking block 3 on the inner end of the corresponding mounting base 2 to form a combined snap-fit ​​structure for locking a standard DIN rail. When the elastic piece 8 of the mounting base 2 slides inward into the inner slot 10, the first locking block 3 and the second locking block 16 are aligned and close together in the horizontal direction to form a wider cooperative locking part. This allows the time relay to be securely hooked or locked into the slot or flange of the standard DIN rail through this cooperative locking part, achieving fast and reliable rail installation.

Claims

1. A time relay comprising a housing and mounting seats arranged on the left and right sides of the bottom of the housing, a first clamping block arranged at the inner side end of the mounting seat, characterized in that: The bottom of the shell has downwardly extending extensions at the front and rear ends of the left and right sides, and the inner walls of the extensions on the same side are provided with opposite and transversely extending open grooves, the mounting seat has sliding strips on the front and rear sides which can slide along the open grooves, and the mounting seat is provided with a through hole, the inner side of the through hole is provided with an outward and upward elastic piece, and the bottom of the shell is provided with a plurality of clamping grooves into which the elastic piece extends and abuts.

2. The time relay according to claim 1, characterized in that: The elastic piece is arc-shaped as a whole, and the outer end of the elastic piece has a circular arc portion, the number of the clamping grooves is two, including an inner clamping groove and an outer clamping groove, and the inner clamping groove and the outer clamping groove have a transition arc surface therebetween.

3. The time relay according to claim 2, characterized in that: The outer side of the mounting seat is provided with a mounting hole which is exposed when the elastic piece abuts against the outer clamping groove.

4. A time relay according to claim 1 or 2 or 3, characterised in that: The outer end face of the open groove has a step, and the mounting seat is provided with a limiting block which can abut against the step.

5. The time relay according to claim 4, characterized in that: The inner side end of the extension on the left side or the right side of the shell is provided with a second clamping block.

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