Delay adjusting structure of leakage protector and leakage protector
By designing a swingable contact shrapnel and automatically adjusting the contact position structure, the problem of unreliable contact in the existing leakage protector delay adjustment structure is solved, and the reliability and service life of the product are improved.
Patent Information
- Application Number
- CN202421221338.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the delay adjustment structure of the conventional leakage protector, there is a problem of unreliable contact between the second V-shaped shrapnel section and the conductive sheet, resulting in low reliability and short service life.
A delay adjustment structure for a leakage protector is designed, wherein the contact shrapnel is swingably mounted on the adjustment knob, the first shrapnel part and the second shrapnel part are arranged on both sides of the swing center of the contact shrapnel, and are connected to the convex. The rib structure ensures that the shrapnel part can automatically adjust the contact position when the adjustment knob is inclined.
With this structure, the contact shrapnel can maintain stable contact when the adjustment knob is tilted, which improves the reliability and stability of the contact and extends the service life of the product.
Smart Images
Figure CN222440488U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a time delay adjustment structure of a leakage protector and the leakage protector. Background Art
[0002] At present, some leakage protectors have a delay function, which means that the output can be disconnected after a set time.
[0003] The delay adjustment structure of the existing leakage protector includes a circuit board 01 and an adjustment knob 02 rotatably mounted on the circuit board 01. The user sets the delay time by rotating the adjustment knob 02. A through hole 06 is provided in the middle of the circuit board 01. An elastic hook 07 is formed on the adjustment knob 02 and penetrates the through hole 06 and is hooked and connected to the circuit board 01. A conductive sheet is provided on the side of the circuit board 01 facing the adjustment knob 02. A contact spring 03 corresponding to the conductive sheet is fixed on the adjustment knob 02. Figure 6 As shown, the contact spring 03 has a first V-shaped spring part 04 and a second V-shaped spring part 05 arranged side by side and elastically contacting the conductive sheet, wherein the first V-shaped spring part 04 is arranged adjacent to the rotation center of the adjustment knob 02, and the second V-shaped spring part 05 is arranged away from the rotation center of the adjustment knob 02. It should be noted that, in an ideal state, Figure 4 As shown in the figure, the circuit board 01 and the adjusting knob 02 are arranged horizontally up and down, and there is a certain gap between the adjusting knob 02 and the circuit board 01, so that the adjusting knob 02 can be rotated more labor-savingly. However, since the contact spring 03 is located on one side of the rotation center of the adjusting knob 02, and a certain elastic contact force needs to be maintained between the contact spring 03 and the conductive sheet, the adjusting knob 02 will be subjected to unilateral force as shown in the figure. Figure 5 In the case of the tilted arrangement shown, the contact spring piece 03 will also be tilted accordingly, so that there is a small contact pressure or no contact between the second V-shaped spring piece part 05 and the conductive sheet, thereby reducing reliability and shortening service life. Utility Model Content
[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect of unreliable contact between the second V-shaped spring piece part and the conductive sheet in the prior art, thereby providing a delay adjustment structure and a leakage protector of a leakage protector with high reliability and long service life.
[0005] To this end, the utility model provides a delay adjustment structure of a leakage protector, including a circuit board, an adjustment knob and a contact spring, the adjustment knob is rotatably installed on the circuit board; the contact spring is swingably installed on the adjustment knob, and the contact spring has a first spring part and a second spring part that contact the conductive sheet on the circuit board, the second spring part is arranged on a side of the first spring part away from the rotation center of the adjustment knob, and the first spring part and the second spring part are arranged on both sides of the swing center of the contact spring.
[0006] The corresponding ends of the first elastic sheet part and the second elastic sheet part are connected by a connecting piece, and the adjusting knob is provided with a convex rib abutting against the middle part of the connecting piece, and the connecting piece is swingably mounted on the convex rib.
[0007] The convex rib is an arched structure.
[0008] The contact spring also has a first through hole located in the middle thereof, and a positioning block is formed on the adjusting knob and inserted into the first through hole.
[0009] The adjusting knob is also provided with a plurality of stoppers distributed around the contact spring.
[0010] The first elastic piece portion and the second elastic piece portion are both inverted V-shaped structures.
[0011] The adjusting knob is assembled with the circuit board through an elastic hook structure, wherein the elastic hook structure comprises a second through hole arranged on the circuit board and an elastic hook arranged on the adjusting knob, and the elastic hook is hooked and connected with the circuit board after passing through the second through hole.
[0012] The utility model also provides a leakage protector, comprising the delay adjustment structure of the leakage protector as described above.
[0013] The technical solution of the utility model has the following advantages:
[0014] 1. The delay adjustment structure of the leakage protector provided by the utility model is characterized in that the contact spring piece is swingably mounted on the adjusting knob, and the first spring piece portion and the second spring piece portion are arranged on both sides of the swing center of the contact spring piece, so that when the adjusting knob is in a tilted state, the contact spring piece can make a seesaw motion around its swing center, thereby adjusting the positions of the first spring piece portion and the second spring piece portion, so that the first spring piece portion and the second spring piece portion both maintain good contact with the conductive sheet on the circuit board, that is, the contact spring piece is not affected by the tilt of the adjusting knob. Compared with the prior art, such contact is more stable and reliable, and the service life of the product is extended.
[0015] 2. The delay adjustment structure of the leakage protector provided by the utility model has two ends corresponding to the first spring piece part and the second spring piece part connected by a connecting piece, and the adjusting knob is provided with a convex rib abutting against the middle part of the connecting piece, and the connecting piece is swingably mounted on the convex rib, so that the connecting piece can make a seesaw motion around the convex rib, thereby adjusting the position of the first spring piece part and the second spring piece part, and the convex rib has the advantage of a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of the delay adjustment structure of the leakage protector of the utility model;
[0018] Figure 2 It is a schematic diagram of the assembly of the adjusting knob and the contact spring;
[0019] Figure 3 It is a schematic diagram of the explosion structure of the delay adjustment structure;
[0020] Figure 4 It is a structural schematic diagram of a delay adjustment structure (under ideal conditions) in the prior art;
[0021] Figure 5 It is a structural schematic diagram of a time delay adjustment structure (under actual assembly) in the prior art;
[0022] Figure 6 It is a three-dimensional diagram of the contact spring.
[0023] Description of reference numerals: 01, circuit board; 02, adjustment knob; 03, contact spring; 04, first V-shaped spring portion; 05, second V-shaped spring portion; 06, through hole; 07, elastic hook;
[0024] 1. Circuit board; 2. Adjustment knob; 3. Contact spring; 4. First spring part; 5. Second spring part; 6. Connecting piece; 7. Raised rib; 8. First through hole; 9. Positioning block; 10. Stop block; 11. Elastic hook; 12. Second through hole. DETAILED DESCRIPTION
[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0029] Example
[0030] This embodiment provides a leakage protector, which is provided with a delay adjustment structure, such as Figure 1 As shown, the delay adjustment structure includes a circuit board 1, an adjustment knob 2 and a contact spring 3.
[0031] Circuit board 1, such as Figure 2 As shown, a conductive sheet (not shown) and a second through hole 12 are provided thereon.
[0032] The contact spring 3 is swingably mounted on the adjusting knob 2. Figure 3As shown, the contact spring piece 3 has a first spring piece portion 4 and a second spring piece portion 5 that contact the conductive sheet on the circuit board 1, the second spring piece portion 5 is arranged on a side of the first spring piece portion 4 away from the rotation center of the adjusting knob 2, and the first spring piece portion 4 and the second spring piece portion 5 are respectively arranged on both sides of the swing center of the contact spring piece 3, and the corresponding two ends of the first spring piece portion 4 and the second spring piece portion 5 are connected by a connecting piece 6. In this embodiment, the first spring piece portion 4 and the second spring piece portion 5 are both inverted V-shaped structures, and a first through hole 8 is provided in the middle of the first spring piece portion 4, the second spring piece portion 5 and the two connecting pieces 6.
[0033] The adjusting knob 2 is rotatably mounted on the circuit board 1. The adjusting knob 2 is assembled with the circuit board 1 through an elastic hook structure. Figure 1 and Figure 3 As shown, the elastic hook structure includes a second through hole 12 provided on the circuit board 1, and two elastic hooks 11 provided on the adjusting knob 2. After the elastic hooks 11 pass through the second through hole 12, they are hooked and connected with the circuit board 1. Figure 2 As shown, the adjusting knob 2 is formed with a positioning block 9 inserted into the first through hole 8, and convex ribs 7 located on both sides of the positioning block 9. The middle part of the connecting piece 6 abuts against the convex rib 7 and can swing relative to the convex rib 7. It should be noted that there is a certain gap between the positioning block 9 and the inner wall of the first through hole 8, so as to allow the contact spring 3 to swing at a certain angle relative to the positioning block 9. In this embodiment, the convex rib 7 is an arched structure. The adjusting knob 2 is also provided with a plurality of stoppers 10 distributed around the contact spring 3.
[0034] The delay adjustment structure of the leakage protector provided by the utility model is characterized in that the contact spring piece 3 is swingably mounted on the adjusting knob 2, and the first spring piece portion 4 and the second spring piece portion 5 are respectively arranged on both sides of the swing center of the contact spring piece, so that when the adjusting knob 2 is in a tilted state, the first spring piece portion 4 of the contact spring piece 3 will first contact the circuit board 1, and then the contact spring piece 3 can make a counterclockwise seesaw motion around its swing center, thereby automatically adjusting the positions of the first spring piece portion 4 and the second spring piece portion 5, so that the first spring piece portion 4 and the second spring piece portion 5 both maintain good contact with the conductive sheet on the circuit board 1, that is, the contact spring piece 3 is not affected by the tilt of the adjusting knob 2. Compared with the prior art, such contact is more stable and reliable, and the service life of the product is extended.
[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. 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 the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A delay adjustment structure of a leakage protector, characterized in that: include: Circuit board (1); An adjusting knob (2) is rotatably mounted on the circuit board (1); A contact spring (3) is swingably mounted on the adjusting knob (2), the contact spring (3) comprising a first spring portion (4) and a second spring portion (5) for contacting a conductive sheet on a circuit board (1), the second spring portion (5) being arranged on a side of the first spring portion (4) away from a rotation center of the adjusting knob (2), and the first spring portion (4) and the second spring portion (5) being arranged on both sides of a swing center of the contact spring (3).
2. The delay adjustment structure of the leakage protector according to claim 1 is characterized in that: The corresponding two ends of the first spring sheet part (4) and the second spring sheet part (5) are connected via a connecting piece (6); the adjusting knob (2) is provided with a convex rib (7) abutting against the middle of the connecting piece (6); the connecting piece (6) is swingably mounted on the convex rib (7).
3. The delay adjustment structure of the leakage protector according to claim 2 is characterized in that: The convex rib (7) is an arched structure.
4. The delay adjustment structure of the leakage protector according to claim 2 or 3, characterized in that: The contact spring (3) also has a first through hole (8) located in the middle thereof, and a positioning block (9) is formed on the adjusting knob (2) and is inserted into the first through hole (8).
5. The delay adjustment structure of the leakage protector according to claim 1 is characterized in that: The adjusting knob (2) is also provided with a plurality of stoppers (10) distributed around the contact spring sheet (3).
6. The delay adjustment structure of the leakage protector according to claim 1, characterized in that: The first elastic sheet portion (4) and the second elastic sheet portion (5) are both inverted V-shaped structures.
7. The delay adjustment structure of the leakage protector according to claim 1 is characterized in that: The adjusting knob (2) is assembled with the circuit board (1) via an elastic hook structure, wherein the elastic hook structure comprises a second through hole (12) provided on the circuit board (1) and an elastic hook (11) provided on the adjusting knob (2); after the elastic hook (11) passes through the second through hole (12), it is hooked and connected with the circuit board (1).
8. A leakage protector, characterized in that: It comprises a delay adjustment structure of a leakage protector as claimed in any one of claims 1 to 7.