Nut fixing structure and quick-action switch

Abstract

The utility model discloses a nut fixing structure and a quick-action switch, the nut fixing structure comprises a nut and a connecting body, the connecting body is provided with a mounting cavity and a through hole communicated with the mounting cavity, the mounting cavity is provided with an opening, the opening is provided with an elastic limiting structure, and the elastic limiting structure is provided with a through hole communicated with the through hole. The nut enters the mounting cavity from the opening and extrudes the elastic limiting structure, and the elastic limiting structure is elastically reset after the nut reaches a set position of the mounting cavity and limits the nut to retreat from the opening; a fastener matched with the nut can penetrate through the through hole, and the axis of the through hole and the axis of the nut located at the set position of the mounting cavity are located on the same straight line. When the nut fixing structure is applied to the quick-acting switch, the problems of gaps and scrapping of the shell can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of nut fixing, in particular to a nut fixing structure and a quick-acting switch. Background Art

[0002] A snap-action switch is a mechanical switch that requires an external drive. A mounting plate is usually connected to its housing, and the mounting plate is usually connected to the housing by screws. At present, there are two ways of connecting screws. The first is to make the housing of the snap-action switch consist of two shells, and clamp a nut between the two shells. The nut is used to provide a threaded mounting hole and cooperate with the screw to facilitate the fixed assembly of the mounting plate. The second is to directly process a threaded hole on the housing of the snap-action switch to cooperate with the screw to facilitate the fixed assembly of the mounting plate. The above first method has the following shortcomings: the product can only be designed as a whole in the form of two shells, which greatly limits the other structural layouts of the product; and the nut will be affected by the torque during installation, which will form a gap between the fitting surfaces of the two shells, which may cause external foreign matter to enter through the gap, causing the product to be contaminated. The disadvantage of the above second method is that once the threaded hole is poorly processed, the entire housing will be scrapped, resulting in increased costs. Utility Model Content

[0003] The utility model aims at solving the technical problems existing in the prior art and provides a nut fixing structure and a quick-acting switch.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a nut fixing structure, comprising a nut and a connecting body, the connecting body is provided with an installation cavity and a through hole connected to the installation cavity, the installation cavity is provided with an opening, and an elastic limiting structure is provided at the opening, the nut enters the installation cavity from the opening and squeezes the elastic limiting structure, the elastic limiting structure elastically resets after the nut reaches the set position of the installation cavity, and limits the nut from withdrawing from the opening; the through hole can be used for a fastener that cooperates with the nut to pass through, and the axis of the through hole is on the same straight line as the axis of the nut at the set position of the installation cavity.

[0005] Furthermore, the elastic limiting structure includes at least one elastic portion, which is arranged on one side of the opening, and at least the free end of the elastic portion is located on the movement path of the nut when it enters the installation cavity, so that the elastic portion can be squeezed and deformed by the nut.

[0006] Furthermore, the elastic portion is inclined relative to the position where the opening is located, and the free end of the elastic portion extends into the installation cavity. The installation cavity is provided with an accommodation space between the set position and the opening to avoid the elastic portion and allow the nut to pass through.

[0007] Furthermore, the elastic portion and the connecting body are integrally formed.

[0008] Furthermore, the elastic part is in a sheet or rod shape.

[0009] Furthermore, the installation cavity forms a boss for supporting the nut at the set position, the boss is opposite to the through hole and is provided with a clearance hole for the tail of the fastener to pass through.

[0010] Furthermore, the axis of the opening is perpendicular to the axis of the through hole.

[0011] Furthermore, the nut is a square nut, and the fastener is a screw.

[0012] Furthermore, the connecting body is a shell of a snap-action switch, the mounting cavity is located at the top of the shell, the through hole passes through the outer top surface of the shell, and the opening passes through the outer side surface of the shell.

[0013] The utility model further provides a snap-action switch, including a mounting plate and a nut fixing structure as described in the utility model above, wherein the connecting body is a shell of the snap-action switch, the mounting plate is connected to the shell by fasteners, and the fasteners are threadedly connected to the nut at a set position of the mounting cavity.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Since the connection body of the utility model is provided with an installation cavity, the nut enters the installation cavity from the opening of the installation cavity and is stopped by the elastic limit structure, so that the connection body of the utility model does not need to be divided into two parts, and the nut will not be affected by the torque and cause a gap when it is installed. In addition, the nut and the connection body are independent of each other, and the connection body does not need to be scrapped when the threaded hole of the nut is poorly processed. Therefore, when the nut fixing structure of the utility model is applied to a snap-action switch, the gap problem and the scrapping problem of the shell can be solved.

[0016] 2. The elastic limiting structure includes at least one elastic part, which is inclined and formed integrally with the connecting body, so that the structure of the elastic limiting structure is relatively simple and does not require additional installation, which is conducive to reducing costs.

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments; however, the nut fixing structure and snap-action switch of the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the quick-acting switch of the utility model;

[0019] Figure 2 yes Figure 1 BB cross-sectional view;

[0020] Figure 3 yes Figure 2 An exploded schematic diagram of the structure shown;

[0021] In the figure, 1, housing, 11, mounting cavity, 111, accommodating space, 112, boss, 12, through hole, 13, opening, 14, elastic part, 2, nut, 3, screw, 4, mounting plate, 41, mounting hole, 5, roller handle. DETAILED DESCRIPTION

[0022] In the present invention, the directions or positional relationships indicated by "upper", "lower", "inner", "outer", "top / bottom" and the like in the description are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between 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.

[0024] See also Figure 1-Figure 3 As shown, a nut fixing structure of the utility model comprises a nut 2 and a connecting body, the connecting body is provided with an installation cavity 11 and a through hole 12 connected to the installation cavity 11, the installation cavity 11 is provided with an opening 13, and an elastic limiting structure is provided at the opening 13. The nut 2 enters the installation cavity 11 from the opening 13 and squeezes the elastic limiting structure, and the elastic limiting structure elastically resets after the nut 2 reaches the set position of the installation cavity 11, and restricts the nut 2 from withdrawing from the opening 13; the through hole 12 can be used for a fastener matching the nut 2 to pass through, and the axis of the through hole 12 is located on the same straight line as the axis of the nut 2 at the set position of the installation cavity 11, and is perpendicular to the axis of the opening 13.

[0025] In this embodiment, the connection body is the housing 1 of the snap-action switch, but the connection body is not limited to the housing 1 of the snap-action switch, and the structure of the connection body can be adjusted according to the product to which it is applied. The connection body is generally referred to as the housing 1 below. The above-mentioned installation cavity 11 is located at the top of the housing 1, the through hole 12 passes through the outer top surface of the housing 1, and the opening 13 of the installation cavity 11 passes through the outer side surface of the housing 1.

[0026] In this embodiment, the elastic limiting structure includes at least one elastic portion 14, which is arranged on one side of the opening 13, and at least the free end of the elastic portion 14 is located on the movement path of the nut 2 when it enters the installation cavity 11, so that the elastic portion 14 can be squeezed and deformed by the nut 2.

[0027] As a preferred structure, the elastic part 14 is integrally formed with the housing 1, and the elastic part 14 is inclined relative to the position where the opening 13 is located, and the free end of the elastic part 14 extends into the mounting cavity 11. The number of the elastic part 14 is one, and the elastic part 14 is specifically arranged on the lower side of the opening 13, and the elastic part 14 is in the form of a sheet, but is not limited to a sheet, and can also be in the form of a rod, etc. The number of the elastic part 14 is also not limited to one, and can also be set to multiple, such as two or three, etc., and when the number of the elastic part 14 is multiple, the multiple elastic parts 14 can be evenly distributed around the opening 13. In other embodiments, the elastic part 14 includes a limit block and an elastic member, and the limit block can be movably installed in a mounting groove arranged on the wall surface of the opening 13 in a direction close to or away from the center of the opening 13, and an elastic member is arranged between the limit block and the bottom surface of the mounting groove, so as to use the elastic member to control the elastic expansion and contraction of the limit block.

[0028] In this embodiment, the installation cavity 11 is provided with an accommodation space 111 between the set position and the opening 13 to avoid the elastic part 14 and allow the nut 2 to pass through. The installation cavity 11 forms a boss 112 for supporting the nut 2 at the set position, and the boss 112 is opposite to the through hole 12 and is provided with a clearance hole for the tail of the fastener to pass through. The top surface of the boss 112 is higher than the lower side of the opening 13 and lower than the free end of the elastic part 14. After the nut 2 enters the installation cavity 11, it is supported by the boss 112 and is limited in all directions by the elastic part 14, the side and top surface of the installation cavity 11. The side of the installation cavity 11 opposite to the opening 13 is provided with a mold process hole leading to the outside.

[0029] In this embodiment, the nut 2 is a square nut, but is not limited thereto. The fastener is specifically a screw 3 .

[0030] See also Figure 1-Figure 3As shown, a snap-action switch of the utility model includes a mounting plate 4 and a nut fixing structure as described in the utility model above. The mounting plate 4 is connected to the outer top surface of the housing 1 by a fastener (i.e., a screw 3), and the fastener is threadedly connected to the nut 2 at a set position in the mounting cavity 11.

[0031] In this embodiment, there are two mounting plates 4. Accordingly, there are two mounting cavities 11, two nuts 2, and two screws 3, which correspond to the two mounting plates 4. One of the two mounting plates 4 is connected to a roller handle 5.

[0032] When assembling the mounting plate 4 of the instant switch of the utility model, the nut 2 is first installed into the mounting cavity 11 from the opening 13. Figure 3 As shown, the arrow in the figure indicates the direction of the nut 2 entering the opening 13. In the process of the nut 2 entering the installation cavity 11, the nut 2 contacts and squeezes the elastic part 14, causing the elastic part 14 to elastically deform and give way to the nut 2; after the nut 2 reaches the boss 112, the elastic part 14 elastically resets, thereby limiting the nut 2 from withdrawing from the opening 13, and the nut 2 is limited on the boss 112. Then, the mounting plate 4 is placed on the outer top surface of the housing 1, and the mounting hole opened on the mounting plate 4 is aligned with the through hole 12 of the housing 1. Finally, the screw 3 is passed through the mounting hole of the mounting plate 4 and the through hole 12 of the housing 1 from top to bottom, and is threadedly connected with the nut 2, thereby completing the installation and fixation of the mounting plate 4.

[0033] The utility model makes it unnecessary to divide the housing 1 into two parts, and no gap will be formed due to the influence of torque when the nut 2 is installed. Moreover, the nut 2 and the housing 1 are independent of each other, and the housing 1 does not need to be scrapped when the threaded hole of the nut 2 is poorly processed.

[0034] The utility model provides a nut fixing structure and a quick-acting switch, and the uninvolved parts are the same as those in the prior art or can be implemented by adopting the prior art.

[0035] The above embodiments are only used to further illustrate a nut fixing structure and a quick-acting switch of the utility model, but the utility model is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model fall within the protection scope of the technical solution of the utility model.

Claims

1. A nut fixing structure, comprising a nut and a connecting body, characterized in that: The connecting body is provided with an installation cavity and a through hole connected to the installation cavity, the installation cavity is provided with an opening, and an elastic limiting structure is provided at the opening. The nut enters the installation cavity from the opening and squeezes the elastic limiting structure. The elastic limiting structure elastically resets after the nut reaches the set position of the installation cavity and limits the nut from withdrawing from the opening; the through hole can be passed through by a fastener that cooperates with the nut, and the axis of the through hole is on the same straight line as the axis of the nut at the set position of the installation cavity.

2. The nut fixing structure according to claim 1, characterized in that: The elastic limiting structure includes at least one elastic part, which is arranged on one side of the opening, and at least the free end of the elastic part is located on the movement path of the nut when entering the installation cavity, so that the elastic part can be squeezed and deformed by the nut.

3. The nut fixing structure according to claim 2, characterized in that: The elastic part is inclined relative to the position where the opening is located, and the free end of the elastic part extends into the installation cavity. The installation cavity is provided with an accommodation space between the set position and the opening to avoid the elastic part and allow the nut to pass through.

4. The nut fixing structure according to claim 2 or 3, characterized in that: The elastic portion and the connecting body are integrally formed.

5. The nut fixing structure according to claim 3, characterized in that: The elastic part is in a sheet shape or a rod shape.

6. The nut fixing structure according to claim 1, characterized in that: The mounting cavity forms a boss for supporting the nut at the set position, the boss is opposite to the through hole and is provided with a clearance hole for the tail of the fastener to pass through.

7. The nut fixing structure according to claim 1, characterized in that: The axis of the opening is perpendicular to the axis of the through hole.

8. The nut fixing structure according to claim 1, characterized in that: The nut is a square nut, and the fastener is a screw.

9. The nut fixing structure according to claim 1, characterized in that: The connecting body is a shell of a snap-action switch, the mounting cavity is located at the top of the shell, the through hole passes through the outer top surface of the shell, and the opening passes through the outer side surface of the shell.

10. A snap-action switch, comprising a mounting plate, characterized in that: It also includes a nut fixing structure as described in any one of claims 1 to 8, wherein the connecting body is a housing of a snap-action switch, the mounting plate is connected to the housing by fasteners, and the fasteners are threadedly connected to a nut at a set position in the mounting cavity.

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