Quick-action switch
By adopting a double-layer housing design and mirror-symmetrical movement cover connection method in the quick switch, the problem of existing quick switches being prone to cracking in harsh environments is solved, and the effective protection and cost reduction of the movement is achieved.
Patent Information
- Application Number
- CN202420827799.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-19
AI Technical Summary
In harsh environments, existing quick switches are prone to cracking the base and cover plate, resulting in the movement being unable to operate normally.
It adopts a double-layer shell design, the movement is installed in the inner shell, and the outer shell is only used to protect the movement. The inner shell is made of two movement covers connected oppositely, and is connected by plug-in and ultrasonic welding.
Effectively protect the movement, prevent shell cracking caused by harsh environmental stress, ensure normal movement movement, and reduce costs through mirror symmetrical design.
Smart Images
Figure CN222462671U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switches, in particular to a quick-acting switch. Background Art
[0002] A snap-action switch is a mechanical switch that requires an external drive. The snap-action switch of the prior art is usually composed of a movement, a base, and a cover. The base and the cover wrap the movement in the middle. The base and the cover are used to assemble and position the movement and serve as a protective shell for the movement. When the snap-action switch is used in a harsh environment, the base and the cover of the snap-action switch are prone to cracking under the harsh environmental stress. Since the base and the cover are also used as the assembly and positioning parts of the movement, once the base and the cover are cracked, it is easy to cause the movement to not work normally. Utility Model Content
[0003] The utility model aims at solving the technical problems existing in the prior art and provides a quick-action switch which adopts a double-layer shell design to achieve the purpose of effectively protecting the movement.
[0004] The utility model solves the technical problem by adopting the following technical solution: a snap-action switch, comprising a movement, an outer shell and an inner shell, wherein the movement is installed in the inner shell, an assembly opening is provided at one end of the outer shell, and the inner shell is installed into the outer shell through the assembly opening; the inner shell comprises two movement covers, which are relatively connected together to enclose an assembly space for the movement.
[0005] Furthermore, the two movement covers have the same structure and size, and the movement covers are of a centrally symmetrical structure.
[0006] Furthermore, the two movement covers are mirror-symmetrical.
[0007] Furthermore, the two movement covers are connected together by plugging and / or ultrasonic welding, and the movement covers are provided with welding ribs for facilitating ultrasonic welding.
[0008] Furthermore, the left and right parts of the movement cover are respectively provided with plug-in posts and plug-in tubes, and the positions of the plug-in posts and the plug-in tubes correspond to each other on the left and right; when the two movement covers are closed, the plug-in posts and the plug-in tubes of one movement cover are respectively plugged in and matched with the plug-in tubes and the plug-in posts of the other movement cover.
[0009] Furthermore, the movement includes a push rod and two groups of normally open contacts and two groups of normally closed contacts distributed on opposite sides of the push rod. The normally open contacts and the normally closed contacts respectively include a static spring with a static contact and a moving spring with a moving contact. The two groups of normally open contacts share the same moving spring, and the two groups of normally closed contacts also share the same moving spring. The push rod drives the two moving springs to move synchronously to switch the normally open contacts and the normally closed contacts.
[0010] Furthermore, the two movement covers are respectively provided with fixing grooves for assembling the static springs corresponding to the static springs of the movement.
[0011] Furthermore, a mounting groove is provided on the outer surface of the movement cover at a position corresponding to the position between the two static contacts on the same side of the push rod, a magnet is installed in the mounting groove, and an elastically deformable pressure rod is provided in the mounting groove, which presses the magnet tightly in the mounting groove.
[0012] Furthermore, the static contact is integrally formed with the static spring, and is V-shaped, with the opening of the V-shape facing the corresponding moving contact, and the static contact and the parts corresponding to the two sides of the V-shape respectively contact and cooperate with the convex arc surfaces provided on the corresponding moving contact when the contact is closed.
[0013] Furthermore, a clearance opening is provided at the other end of the shell, and the clearance opening is used to avoid the push rod; and one end of the shell is opposite to the other end of the shell.
[0014] Furthermore, the two movement covers are arranged opposite to each other in the width direction of the shell, and one end of the shell is one end of the shell in the height direction.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. Since the utility model further includes an outer shell and an inner shell, the movement is installed in the inner shell, and an assembly port is provided at one end of the outer shell. The inner shell is installed into the outer shell from the assembly port, so that the snap-action switch of the utility model adopts a double-layer shell design, which can effectively protect the movement. In particular, the outer shell is only used to protect the movement. Even if the harsh environmental stress causes the outer shell to crack, it will not cause the movement to fail to operate normally.
[0017] 2. The inner shell includes two movement covers, which are relatively connected together and enclose the assembly space of the movement, so that the structure of the inner shell is relatively simple. In particular, the two movement covers are mirror-symmetrical, so that the two movement covers of the utility model can share the same set of molds for molding, thereby achieving the purpose of reducing costs.
[0018] 3. The static contact is V-shaped, with the opening of the V-shape facing the corresponding moving contact. The static contact and the corresponding parts on both sides of the V-shape are in contact and cooperation with the convex arc surfaces provided on the corresponding moving contact when the contact is closed. Therefore, the utility model can utilize the friction brought by the moving contact on both sides of the V-shape to remove the oxide film or foreign matter on the contact surface, and has a self-cleaning function.
[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the quick-acting switch of the utility model is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is an exploded schematic diagram of the utility model;
[0021] Figure 2 It is a schematic structural diagram of the movement of the utility model in an initial state;
[0022] Figure 3 It is a structural schematic diagram of the movement of the utility model in the action state;
[0023] Figure 4 This is a three-dimensional schematic diagram of the movement cover of the utility model Figure 1 ;
[0024] Figure 5 This is a three-dimensional schematic diagram of the movement cover of the utility model Figure 2 ;
[0025] Figure 6 It is a structural schematic diagram of the movement cover and the magnetic steel of the utility model before assembly (partial);
[0026] Figure 7 It is a schematic diagram of the structure of the movement cover and the magnetic steel after being assembled in the utility model (partially shown);
[0027] Figure 8 It is a structural schematic diagram of the static contact and the moving contact of the utility model before closing (representing a part);
[0028] Fig. 9 It is a schematic diagram of the structure of the static contact and the moving contact of the utility model after closing (representing a part);
[0029] Fig.10 This is a schematic diagram of the three-dimensional structure of the shell of the utility model Figure 1 ;
[0030] Fig.11 This is a schematic diagram of the three-dimensional structure of the shell of the utility model Figure 2 ;
[0031] Fig.12 It is a three-dimensional structural schematic diagram of the movement and the inner shell of the utility model in the assembled state;
[0032] Fig.13 It is a three-dimensional structural schematic diagram of the utility model;
[0033] In the figure, 1. movement, 11. push rod, 12. moving spring, 121. moving contact, 13. static spring, 131. static contact, 2. housing, 21. assembly port, 22. clearance port, 3. movement cover, 31. plug-in column, 32. plug-in cylinder, 34. fixing groove, 35. installation groove, 36. pressure rod, 4. magnet. DETAILED DESCRIPTION
[0034] In the present invention, the directions or positional relationships indicated by "upper", "lower", "left", "right", "inner", "outer", etc. 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.
[0035] In addition, in the description of the present invention, "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 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.
[0036] See also Figure 1-Figure 13 As shown, a snap-action switch of the utility model comprises a movement 1, an outer shell 2 and an inner shell, wherein the movement 1 is installed in the inner shell, and an assembly port 21 is provided at one end of the outer shell 2, and the inner shell is installed into the outer shell 2 through the assembly port 21. The inner shell specifically comprises two movement covers 3, and the two movement covers 3 are opposite to each other and connected together to enclose an assembly space for the movement 1. Specifically, the two movement covers 3 are arranged opposite to each other in the width direction of the outer shell 2, and one end of the outer shell 2 is one end of the outer shell 2 in the height direction, specifically the bottom end of the outer shell 2.
[0037] like Figure 2 , Figure 3 As shown, the movement 1 includes a push rod 11 and two groups of normally open contacts and two groups of normally closed contacts correspondingly distributed on opposite sides of the push rod 11. The normally open contact and the normally closed contact respectively include a static spring 13 provided with a static contact 131 and a dynamic spring 12 provided with a dynamic contact 121. The two groups of normally open contacts share the same dynamic spring 12, and the two groups of normally closed contacts also share the same dynamic spring 12. The push rod 11 drives the two dynamic springs 12 to move synchronously to switch the normally open contact and the normally closed contact.
[0038] As a preferred embodiment, the two movement covers 3 of the utility model are mirror-symmetrical, so that the two movement covers 3 of the utility model can be formed by sharing the same set of molds, thereby achieving the purpose of reducing costs.
[0039] In this embodiment, the two movement covers 3 are connected together by plugging and / or ultrasonic welding. Specifically, the two movement covers 3 of the utility model are connected together by plugging and ultrasonic welding at the same time, so that the relative positions of the two movement covers 3 are accurately positioned and the connection is firm.
[0040] In this embodiment, the left and right parts of each movement cover 3 are respectively provided with a plug-in column 31 and a plug-in tube 32, and the positions of the plug-in column 31 and the plug-in tube 32 correspond to each other on the left and right. Figure 4 As shown, the two movement covers 3 are mirror-symmetrical, so when the two movement covers 3 are covered, the plug-in column 31 and the plug-in tube 32 of one movement cover 3 are plugged and matched with the plug-in tube 32 and the plug-in column 31 of the other movement cover 3 respectively.
[0041] like Figure 4 As shown, the two movement covers 3 are respectively provided with fixing grooves 34 for assembling the static springs 13 corresponding to the static springs 13 of the movement 1. Figure 5 As shown, the outer surface of the movement cover 3 is provided with a mounting groove 35 at a position corresponding to the position between the two static contacts 131 on the same side of the push rod 11. The mounting groove 35 is provided with a magnetic steel 4, and the mounting groove 35 is provided with an elastically deformable pressure rod 36, which presses the magnetic steel 4 tightly in the mounting groove, as shown in FIG. Figure 6 , Figure 7 shown.
[0042] like Figure 8 , Fig. 9 As shown, the static contact 131 is integrally formed with the static spring 13. Specifically, one end of the static spring 13 is bent to form the static contact 131, and the static contact 131 is V-shaped, the opening of the V-shape faces the corresponding moving contact 121, and the static contact 131 and the corresponding parts on both sides of the V-shape respectively contact and cooperate with the convex arc surface provided on the corresponding moving contact 121 when the contact is closed. Therefore, the utility model can utilize the friction brought by the moving contact 121 contacting on both sides of the V-shape to remove the oxide film or foreign matter on the contact surface, and has a self-cleaning function. In this embodiment, the longitudinal section of the moving contact 121 in the width direction of the moving spring 12 is elliptical, but it is not limited to this. In other embodiments, the longitudinal section of the moving contact 121 in the width direction of the moving spring 12 is circular, etc.
[0043] like Fig.10 , Fig.11As shown, the housing 2 is in a rectangular parallelepiped shape, and the two movement covers 3 are connected together along the width direction of the housing 2. The other end of the housing 2 is provided with a clearance opening 22, and the clearance opening 22 is used to avoid the push rod 11 of the movement 1. Fig.13 One end of the housing 2 and the other end of the housing 2 are opposite to each other in the height direction of the housing 2 . Specifically, one end of the housing 2 is the upper end of the housing 2 , and the other end of the housing 2 is the lower end of the housing 2 .
[0044] The utility model is a snap-action switch, wherein the inner shell and the outer shell 2 form a double-layer shell, which can effectively protect the movement 1, and the outer shell 2 is only used to protect the movement 1, but not to assemble and position the movement 1, so that even if the harsh environmental stress causes the outer shell 2 to crack, it will not cause the movement 1 to fail to operate normally. The inner shell includes the above-mentioned two movement covers 3, so that the structure of the inner shell is relatively simple. In particular, the two movement covers 3 are mirror-symmetrical, so that the two movement covers 3 can share the same set of molds for molding, thereby achieving the purpose of reducing costs.
[0045] The utility model is a snap-action switch, and the unrelated parts (such as the spring and the spring connected to the push rod, the connection structure of the two moving springs, etc.) are the same as the prior art or can be implemented by using the prior art.
[0046] The above embodiments are only used to further illustrate a snap-action 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 snap-action switch, comprising a movement, characterized in that: It also includes an outer shell and an inner shell, the movement is installed in the inner shell, one end of the outer shell is provided with an assembly opening, and the inner shell is installed into the outer shell through the assembly opening; The inner shell comprises two movement covers, which are relatively connected together to enclose an assembly space for the movement.
2. The snap-action switch according to claim 1, characterized in that: The two movement covers are mirror-symmetrical.
3. The snap-action switch according to claim 1 or 2, characterized in that: The two movement covers are connected together by plugging and / or ultrasonic welding.
4. The snap-action switch according to claim 3, characterized in that: The left and right parts of the movement cover are respectively provided with plug-in posts and plug-in tubes, and the positions of the plug-in posts and the plug-in tubes correspond to each other on the left and right. When the two movement covers are closed, the plug-in posts and the plug-in tubes of one movement cover are respectively plugged and matched with the plug-in tubes and the plug-in posts of the other movement cover.
5. The snap-action switch according to claim 1, 2 or 4, characterized in that: The movement includes a push rod and two groups of normally open contacts and two groups of normally closed contacts distributed on opposite sides of the push rod. The normally open contacts and the normally closed contacts respectively include a static spring with a static contact and a dynamic spring with a dynamic contact. The two groups of normally open contacts share the same dynamic spring, and the two groups of normally closed contacts also share the same dynamic spring. The push rod drives the two dynamic springs to move synchronously to switch the normally open contacts and the normally closed contacts.
6. The snap-action switch according to claim 5, characterized in that: The two movement covers are respectively provided with fixing grooves for assembling the static springs corresponding to the static springs of the movement.
7. The snap-action switch according to claim 5, characterized in that: The outer surface of the movement cover is provided with a mounting groove at a position between two static contacts on the same side of the push rod, and a magnetic steel is installed in the mounting groove. An elastically deformable pressure rod is provided in the mounting groove, and the pressure rod presses the magnetic steel tightly in the mounting groove.
8. The snap-action switch according to claim 5, characterized in that: The static contact is integrally formed with the static spring, and is V-shaped, with the opening of the V-shape facing the corresponding moving contact. The static contact and the parts corresponding to the two sides of the V-shape respectively contact and cooperate with the convex arc surfaces set on the corresponding moving contact when the contacts are closed.
9. The snap-action switch according to claim 5, characterized in that: The other end of the shell is provided with a clearance opening, which makes way for the push rod; one end of the shell is opposite to the other end of the shell; the shell is in the shape of a rectangular parallelepiped, the two movement covers are arranged opposite to each other in the width direction of the shell, and one end of the shell is opposite to the other end in the height direction of the shell.