A button fast contact normally open module

Abstract

This utility model relates to a normally open button quick-contact module, including a housing, a terminal block, and a pressing part. A terminal block is provided on each of the left and right sides of the housing, and each terminal block has a stationary contact piece extending into the housing and fixedly connected to a stationary contact point. The pressing part is movably mounted on the housing, and a return spring is provided between the lower end of the pressing part and the housing. A mounting groove is formed through the pressing part from left to right. A limit plate is integrally formed in the middle of the mounting groove, and a movable contact piece is movably mounted in the mounting groove on the upper side of the limit plate. Movable contacts are provided at both ends of the movable contact piece, corresponding to the upper sides of the stationary contacts on the left and right sides. A compression spring is provided in the mounting groove, with its two ends respectively pressing against the upper side of the movable contact piece and the top of the mounting groove. The movable contact piece of this utility model can move within the mounting groove and is buffered by the compression spring, thereby effectively preventing deformation of the movable contact piece due to pressing force during long-term use.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a button fast contact normally open module. Background Technology

[0002] In existing electrical control systems, normally open push-button contact modules are widely used in various industrial automation scenarios as key components of manual control devices. In electrical automatic control circuits, they are used to manually send control signals to control contactors, relays, electromagnetic starters, etc. However, in practical applications, traditional normally open push-button switch contact modules, such as those described in patent publication number CN207068689U, have a significant technical problem: when the moving contact and stationary contact are in contact, the moving contact is subjected to pressing pressure. Over time and with increased usage frequency, this continuous pressure acting on the connecting piece between the pressing part and the moving contact may cause permanent deformation of the connecting piece.

[0003] If the aforementioned connecting piece deforms, it will not only affect the normal contact between the moving and stationary contacts, but may also cause poor contact, thereby reducing the reliability of the entire control system. Therefore, this application makes improvements to address the above-mentioned technical problems. Utility Model Content

[0004] This invention proposes a button fast contact normally open module, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows: A button quick-contact normally open module includes a housing, a terminal block, and a pressing part. The terminal block is provided on both the left and right sides of the housing. Each of the two terminal blocks has a stationary contact piece, which extends into the housing and is fixedly connected to a stationary contact point. The pressing part is movably mounted on the housing, with its upper end penetrating through the housing. A return spring is provided between the lower end of the pressing part and the housing. An assembly groove is provided through the pressing part from left to right. A limiting plate is integrally formed in the middle of the assembly groove. A movable contact piece is movably mounted in the assembly groove on the upper side of the limiting plate. Movable contacts are provided at both ends of the movable contact piece, and the two movable contacts are respectively positioned above the stationary contacts on the left and right sides. A compression spring is provided in the assembly groove, with its two ends respectively pressing against the upper side of the movable contact piece and the top of the assembly groove.

[0006] Preferably, the housing has upper and lower sliding limiting grooves on the front and rear sides of the pressing part, and the pressing part slides up and down in the upper and lower sliding limiting grooves.

[0007] Preferably, a limiting block is integrally formed on the front side of the pressing part, and a limiting groove is provided on the front side of the housing for the limiting block to move and cooperate.

[0008] Preferably, the movable contact includes limiting protrusions located on the left and right sides outside the assembly groove, the limiting protrusions being wider than the width of the assembly groove.

[0009] Preferably, the stationary contact includes a terminal extending into the terminal block, the terminal block is provided with a wire clamping spring, one end of the wire clamping spring is pressed against the lower side of the terminal, and the terminal block is provided with a wiring hole leading to the lower side of the terminal.

[0010] Preferably, the terminal block is also movably provided with a quick-connect block, the inner end of which abuts against the wire clamping spring and presses against one end of the terminal.

[0011] Preferably, the upper side of the pressing part has an integrally formed pressing protrusion.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. By designing a housing, terminal block, and pressing part, and incorporating an assembly groove and a limiting plate within the pressing part, the moving contact can move within the assembly groove and be cushioned by a compression spring. This design effectively prevents deformation of the moving contact due to pressing pressure during long-term use, ensuring good contact between the moving and stationary contacts.

[0014] 2. The design of the upper and lower sliding limit grooves ensures the precise movement of the pressing part in the vertical direction, avoids mechanical failures that may be caused by lateral offset, and improves the overall stability and durability of the module.

[0015] 3. The design of the limiting protrusion plate increases the stability of the moving contact piece in the assembly slot, preventing it from shifting laterally or tilting during movement, and ensuring that the moving contact is always accurately aligned with the stationary contact.

[0016] 4. The design of the wire clamps and terminals simplifies the installation process of external terminals while ensuring a secure connection and conductivity, reducing the risk of poor contact. Furthermore, the introduction of quick-connect blocks allows users to easily and quickly insert or remove external terminals, greatly improving installation and maintenance efficiency and reducing labor intensity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model after removing a portion of the shell;

[0022] Figure 5 This is a schematic diagram of the structure of this utility model after the shell has been removed;

[0023] Figure 6 This is a schematic diagram of the pressing part in this utility model;

[0024] Figure 7 This is a schematic diagram of the shell structure in this utility model;

[0025] Figure 8 This is an exploded view of the shell structure in this utility model.

[0026] In the diagram: 1. Housing; 11. Upper and lower sliding limit groove; 12. Limiting movable groove; 2. Terminal block; 21. Wiring hole; 3. Pressing part; 31. Assembly groove; 32. Limiting plate; 33. Limiting block; 34. Pressing protrusion; 4. Stationary contact piece; 41. Stationary contact point; 42. Wiring terminal; 5. Return spring; 6. Moving contact piece; 61. Moving contact point; 62. Limiting protrusion; 7. Compression spring; 8. Wire pressing spring; 9. Quick-connect block. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1-8 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example:

[0029] like Figures 1 to 8 As shown, this utility model discloses a button quick-contact normally open module, which includes a housing 1, a terminal block 2, and a pressing part 3. The terminal block 2 is provided on both the left and right sides of the housing 1, and each terminal block 2 is provided with a stationary contact piece 4. The stationary contact piece 4 extends into the housing 1 and is fixedly connected to a stationary contact 41. The pressing part 3 is movably mounted on the housing 1, and its upper end extends through the housing 1 for the user to press. A return spring is provided between the lower end of the pressing part 3 and the housing 1. 5. The return spring 5 is used to push the pressing part 3 upward. The pressing part 3 has a through-hole assembly groove 31. The pressing part 3 has a limiting plate 32 integrally formed in the middle of the assembly groove 31. The upper side of the limiting plate 32 has a movable contact piece 6 in the assembly groove 31. The left and right ends of the movable contact piece 6 are provided with movable contact points 61. The two movable contact points 61 are respectively provided on the upper side of the left and right static contact points 41. The assembly groove 31 is provided with a compression spring 7 with both ends pressing on the upper side of the movable contact piece 6 and the top of the assembly groove 31 respectively.

[0030] The working principle of this utility model is as follows:

[0031] 1. Initial state: When not pressed, the reset spring 5 keeps the pressing part 3 in a high position. At this time, there is a certain gap between the moving contact 61 on the moving contact 6 and the stationary contact 41 on the stationary contact 4, and the circuit is in the open state.

[0032] 2. Pressing the pressing part 3: When the user applies force to press the pressing part 3, the pressing part 3 moves downward against the resistance of the return spring 5. As the pressing part 3 moves downward, it drives the compression spring 7 and the moving contact 6 to approach the stationary contact 4 together. During this process, the moving contact 61 gradually approaches and until it contacts the stationary contact 41. When the moving contact 61 contacts the stationary contact 41, the circuit is turned on.

[0033] 3. Continue pressing: If the user continues to press down on the pressing part 3, the pressure on the moving contact 6 will be partially absorbed by the compression spring 7, thus effectively protecting the moving contact 6 from excessive direct pressure and preventing permanent deformation. This not only maintains good contact quality but also extends the service life of the equipment.

[0034] 4. Release the pressing part 3: Once the external force is released, the reset spring 5 will push the pressing part 3 back to its original position, and the moving contact 61 will disengage from the stationary contact 41, and the circuit will be disconnected again.

[0035] In this utility model, the pressing part 3 is movably mounted on the housing. The specific structure is as follows: the housing 1 has upper and lower sliding limit grooves 11 on the front and rear sides of the pressing part 3. The pressing part 3 slides and fits in the upper and lower sliding limit grooves 11. The design of the upper and lower sliding limit grooves 11 ensures the precise movement of the pressing part 3 in the vertical direction, avoids mechanical failures that may be caused by lateral offset, and improves the overall stability and durability of the module.

[0036] Furthermore, in order to prevent the pressing part 3 from coming out of the housing, a limiting block 33 is integrally formed on the front side of the pressing part 3, and a limiting groove 12 is provided on the front side of the housing 1 for the limiting block 33 to move and cooperate.

[0037] In addition, to ensure the stability of the moving contact 6, the moving contact 6 includes a limiting protrusion 62 located on the left and right sides of the assembly groove 31. The limiting protrusion 62 is wider than the width of the assembly groove 31. The design of the limiting protrusion 62 increases the stability of the moving contact 6 in the assembly groove 31, prevents it from lateral displacement or tilting during movement, and ensures that the moving contact 61 is always accurately aligned with the stationary contact 41.

[0038] In this utility model, the stationary contact 4 includes a terminal 42 extending into the terminal block 2. A wire pressing spring 8 is provided in the terminal block 2, one end of which presses against the lower side of the terminal 42. In addition, a wiring hole 21 is provided on the terminal block 2 to the lower side of the terminal 42.

[0039] In addition, a quick-connect block 9 is movably disposed on the terminal block 2. The inner end of the quick-connect block 9 abuts against the wire clamping spring 8 and presses it against one end of the terminal 42.

[0040] The wiring process of this utility model is as follows: During electrical connection, the external terminal 42 is inserted into the terminal block 2 through the wiring hole 21, and clamped between the wire clamping spring 8 and the terminal 42 of the stationary contact 4, forming a reliable electrical connection. The presence of the quick-connect block 9 allows users to complete the insertion and removal actions more conveniently. Users only need to use a tool to push the quick-connect block 9 inward, which will deform the end of the wire clamping spring 8 that is clamped on the terminal 42, thereby making it easy for users to quickly insert or remove the external terminal 42 between the wire clamping spring 8 and the terminal 42 of the stationary contact 4.

[0041] In this utility model, a pressing protrusion 34 is integrally formed on the upper side of the pressing part 3, which makes it convenient for the user to press the pressing part 3.

[0042] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A normally open button quick-contact module, characterized in that: The device includes a housing, a terminal block, and a pressing part. Each terminal block has one on each of the left and right sides of the housing, and each terminal block has a stationary contact piece extending into the housing and fixedly connected to a stationary contact point. The pressing part is movably mounted on the housing, with its upper end penetrating through the housing. A return spring is provided between the lower end of the pressing part and the housing. An assembly groove is formed through the pressing part from left to right. A limiting plate is integrally formed in the middle of the assembly groove. A movable contact piece is movably mounted in the assembly groove on the upper side of the limiting plate. Movable contacts are provided at both ends of the movable contact piece, and two movable contacts are respectively positioned above the stationary contacts on the left and right sides. A compression spring is provided in the assembly groove, with its two ends pressing against the upper side of the movable contact piece and the top of the assembly groove, respectively.

2. The normally open button quick-contact module according to claim 1, characterized in that: The housing has upper and lower sliding limiting grooves on the front and rear sides of the pressing part, and the pressing part slides up and down in the upper and lower sliding limiting grooves.

3. A button quick-contact normally open module according to claim 2, characterized in that: The front side of the pressing part is integrally formed with a limiting block, and the front side of the housing is provided with a limiting groove for the limiting block to move and cooperate.

4. A normally open button quick-contact module according to claim 1, characterized in that: The movable contact includes limiting protrusions located on the left and right sides of the assembly groove, and the limiting protrusions are wider than the width of the assembly groove.

5. A normally open button quick-contact module according to claim 1, characterized in that: The stationary contact includes a terminal extending into the terminal block. The terminal block is provided with a wire clamping spring, one end of which is pressed against the lower side of the terminal. The terminal block has a wiring hole leading to the lower side of the terminal.

6. A normally open button quick-contact module according to claim 5, characterized in that: The terminal block is also movably provided with a quick-connect block, the inner end of which abuts against the wire clamping spring and presses against one end of the terminal block.

7. A button quick-contact normally open module according to claim 1, characterized in that: The upper side of the pressing part has an integrally formed pressing protrusion.

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