Anti-misloading direct current signal switch commutation spring assembly structure and direct current signal switch

Abstract

The utility model relates to a kind of anti-misloading direct current signal switch commutating reed assembly structure and direct current signal switch, including commutating reed and commutating pivot, the top of commutating pivot is provided with a positioning column in the center hole of commutating reed, gap is set on positioning column, the inner edge of commutating reed is provided with the positioning foot corresponding with gap one to one, and positioning foot is inserted in the gap corresponding one to one. By setting positioning column on the top of commutating pivot and opening gap, while adding the positioning foot corresponding with gap on commutating reed, and the spacing between positioning column and the inner edge of center hole of commutating reed is set to be less than the length of positioning foot along the diameter direction of commutating reed, so that commutating reed cannot be pressed into place when assembly angle is not right, equipment can issue alarm to remind operator to handle, avoid that the commutating mechanism of assembly error flows into next production line and causes the increase of switch overall defective rate.

Description

Technical Field

[0001] This utility model belongs to the field of electrical switch technology, specifically relating to an assembly structure for a DC signal switch commutator spring to prevent misinstallation. Background Technology

[0002] The commutator spring design of commonly used DC signal switches is similar to Figure 1 As shown, the correct assembly method is for the two positioning holes on the spring to fit onto the two positioning shafts of the reversing shaft. However, due to the structural features of the spring, there are also semi-circular elongated holes on the circumference of the two positioning holes. This makes it easy for a single positioning hole or both positioning holes to not fit onto the corresponding positioning shafts during the production process, resulting in the failure of the switch reversing function.

[0003] Since the pressing height is mainly used as the inspection standard to determine whether the spring is assembled properly when it is assembled manually or mechanically, when an assembly error occurs, it cannot be detected quickly by humans or equipment. This causes defective parts to flow into the later stages. After other parts such as DC signal switches are installed, the spring is covered up and the problem can no longer be detected by visual inspection. Instead, it must be detected by inefficient electrical performance testing, which increases the cost of subsequent inspection. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an assembly structure for a DC signal switch commutator spring that prevents misassembly, thereby solving the technical problem that the commutator spring is prone to failure during the assembly process, where a single positioning hole or both positioning holes are not fitted onto the corresponding positioning shaft, resulting in the failure of the switch commutation function.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a DC signal switch commutator spring assembly structure for preventing misinstallation, including an annular commutator spring and a commutator shaft. The commutator spring has multiple circumferentially discretely distributed positioning holes. The top end of the commutator shaft is provided with a positioning shaft corresponding to each positioning hole. Each positioning hole of the commutator spring is sleeved on the corresponding positioning shaft. The top end of the commutator shaft is provided with a positioning post located in the central hole of the commutator spring. The positioning post is provided with at least one notch. The inner edge of the commutator spring is provided with positioning feet corresponding to each notch. The distance between the positioning post and the inner edge of the central hole of the commutator spring is less than the length of the positioning feet along the diameter direction of the commutator spring. The positioning feet are inserted into the corresponding notches.

[0006] As a preferred embodiment, the reversing spring includes two positioning portions and two abutting portions arranged circumferentially. The two positioning portions are flat plates on the same plane. The two abutting portions are bent upward at the connection with the positioning portions to form a wing shape. The middle of each abutting portion is also arched upward to form a contact point. The contact point is used to connect with the reversing circuit on the PCB board. There are two positioning holes, which are respectively opened on the two positioning portions. There are two positioning feet and two notches. The two positioning feet are connected one-to-one to the opposite sides of the two positioning portions and extend inward along the radial direction of the reversing spring.

[0007] As a preferred embodiment, each contact part is provided with an arc-shaped elongated hole symmetrically.

[0008] As a preferred embodiment, the outer edge of the top of the reversing shaft is provided with two upwardly protruding arc-shaped baffles. The two baffles are symmetrically arranged on both sides of the reversing spring and are close to the outer edge of the reversing spring. The two baffles correspond one-to-one with the two positioning parts and are located outside the two positioning parts, thereby limiting the reversing spring.

[0009] As a preferred embodiment, two drive holes are provided on the bottom surface of the reversing shaft. The contact points of the two drive holes and the two abutment parts are directly opposite each other. The two drive holes and the two notches are spaced apart along the circumferential direction with a spacing angle of 90°.

[0010] The technical problem to be solved by this utility model is to provide a DC signal switch that solves the technical problem that the switching switching function fails because the current commutation spring is prone to failure during the assembly process when one or both positioning holes are not fitted onto the corresponding positioning shaft.

[0011] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a DC signal switch, which adopts the above-mentioned anti-misinstallation DC signal switch commutator spring assembly structure.

[0012] The beneficial effects of this utility model are as follows: This utility model sets a positioning post at the top of the reversing shaft, opens a notch on the positioning post, and adds a positioning foot in the center hole of the reversing spring that corresponds to the notch. The distance between the positioning post and the inner edge of the center hole of the reversing spring is set to be less than the length of the positioning foot along the diameter of the reversing spring. With this structure, the reversing spring cannot be pressed into place when the assembly angle is not correct, that is, the pressing height can never reach the standard. In this way, the equipment can issue an alarm to remind the operator to deal with it, and prevent the incorrectly assembled reversing mechanism from flowing into the next production line and causing an increase in the overall defect rate of the switch. Attached Figure Description

[0013] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1This is a schematic diagram showing the exploded state of the commutator spring assembly structure of a commonly used DC signal switch. Figure 2 This is an exploded view of the DC signal switch commutator spring assembly structure described in this utility model. Figure 3 This is a schematic diagram of the assembly state of the DC signal switch commutation spring assembly structure described in this utility model; Figures 1-3 In the middle: 1. Reversing spring; 101. Positioning part; 102. Abutting part; 103. Elongated hole; 2. Reversing shaft; 3. Positioning hole; 4. Positioning shaft; 5. Positioning post; 6. Notch; 7. Positioning foot; 8. Contact point; 9. Stop bar; 10. Drive hole. Detailed Implementation

[0014] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings. Example 1

[0015] like Figure 2 and Figure 3 The illustrated anti-misinstallation DC signal switch commutator spring assembly structure includes a circular commutator spring 1 and a commutator shaft 2. The commutator spring 1 has two circumferentially discretely distributed positioning holes 3. The top of the commutator shaft 2 has a positioning shaft 4 corresponding to each of the two positioning holes 3. Each positioning hole 3 of the commutator spring 1 is fitted onto its corresponding positioning shaft 4. The top of the commutator shaft 2 also has a positioning post 5 located within the central hole of the commutator spring 1. This positioning post 5 has two notches 6. The inner edge of the commutator spring 1 has positioning feet 7 corresponding to each of the two notches 6, which are inserted into the corresponding notches 6. The distance between the positioning post 5 and the inner edge of the central hole of the commutator spring 1 is less than the length of the positioning feet 7 along the diameter of the commutator spring 1. Thus, when the angle of the commutator spring 1 is incorrect, the positioning feet 7 interfere with the positioning post 5, preventing the commutator spring 1 from being pressed down onto the top surface of the commutator shaft 2. When assembling manually, workers can clearly sense assembly abnormalities and thus adjust the angle of the reversing spring 1 in a timely manner to complete accurate assembly. However, when using automated assembly, the equipment may fail to press the reversing spring 1 to the designated height, triggering an alarm to alert the operator to troubleshoot the problem. This prevents the reversing spring 1 from being mistakenly installed and flowing into the next process, effectively avoiding an increase in product defect rates.

[0016] In practical use, the number of positioning holes 3 is designed according to the structure of the reversing spring 1; it can be one or more. The number of notches 6 and positioning feet 7 can also be appropriately increased or decreased, but considering the stability of the positioning feet 7, they are usually positioned where the positioning holes 3 are located on the reversing spring 1. Specifically, for example... Figure 1As shown, the reversing spring 1 includes two positioning parts 101 and two abutting parts 102 arranged circumferentially. The two positioning parts 101 are flat plates on the same plane. The two abutting parts 102 are bent upward at the connection with the positioning parts 101 to form a wing shape. The middle part of each abutting part 102 is also arched upward to form a contact point 8. The contact point 8 is used to connect with the reversing circuit on the PCB board. There are two positioning holes 3, which are respectively opened on the two positioning parts 101. There are two positioning feet 7 and two notches 6. The two positioning feet 7 are connected one-to-one to the opposite side of the two positioning parts 101 and extend inward along the radial direction of the reversing spring 1.

[0017] In this embodiment, each contact portion 102 is symmetrically provided with an arc-shaped elongated hole 103 to improve the elastic performance of the contact portion 102.

[0018] Two upward-protruding arc-shaped baffles 9 are provided on the outer edge of the top end of the reversing shaft 2. The two baffles 9 are symmetrically arranged on both sides of the reversing spring 1 and are close to the outer edge of the reversing spring 1. The two baffles 9 correspond one-to-one with the two positioning parts 101 and are located outside the two positioning parts 101, thus limiting the reversing spring 1.

[0019] The stop bar 9 limits the reversing spring 1 during its operation to eliminate its radial movement, improve the connection accuracy between the reversing spring 1 and the PCB circuit board, and improve the reversing adjustment accuracy.

[0020] In this embodiment, two drive holes 10 are formed on the bottom surface of the commutation shaft 2. The two drive holes 10 are directly opposite the contact points 8 of the two contact parts 102. The two drive holes 10 and the two notches 6 are spaced apart along the circumferential direction at an angle of 90°. This staggered arrangement ensures the structural stability of the commutation shaft 2 and avoids interference between the positioning foot 7 and the drive rod used to drive the rotation of the commutation shaft 2. The drive rod is inserted into the drive hole 10 and is used to drive the commutation shaft 2 to rotate. Since the drive rod is not part of the anti-misinstallation DC signal switch commutation spring assembly structure described in this embodiment, it is not shown in the attached drawings.

[0021] The working principle of this embodiment is as follows: by setting a positioning post 5 at the top of the reversing shaft 2, and opening a notch 6 on the positioning post 5, and adding a positioning foot 7 in the center hole of the reversing spring 1 that corresponds to the notch 6, and setting the distance between the positioning post 5 and the inner edge of the center hole of the reversing spring 1 to be less than the length of the positioning foot 7 along the diameter direction of the reversing spring 1, this structure can prevent the reversing spring 1 from being pressed into place when the assembly angle is not correct, that is, the pressing height can never reach the standard. In this way, the equipment can issue an alarm to remind the operator to deal with it, and prevent the incorrectly assembled reversing mechanism from flowing into the next production line and causing an increase in the overall defect rate of the switch. Example 2

[0022] A DC signal switch employing the anti-misinstallation DC signal switch commutator spring assembly structure described in Embodiment 1 above.

[0023] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A DC signal switch commutator spring assembly structure for preventing misinstallation, comprising an annular commutator spring (1) and a commutator shaft (2), wherein the commutator spring (1) is provided with a plurality of circumferentially discretely distributed positioning holes (3), and the top end of the commutator shaft (2) is provided with positioning shafts (4) corresponding one-to-one with each positioning hole (3), and each positioning hole (3) of the commutator spring (1) is sleeved on the corresponding positioning shaft (4), characterized in that, The top of the reversing shaft (2) is provided with a positioning post (5) located in the center hole of the reversing spring (1). The positioning post (5) is provided with at least one notch (6). The inner edge of the reversing spring (1) is provided with positioning feet (7) that correspond one-to-one with the notches (6). The distance between the positioning post (5) and the inner edge of the center hole of the reversing spring (1) is less than the length of the positioning feet (7) along the diameter direction of the reversing spring (1). The positioning feet (7) are inserted into the corresponding notches (6).

2. The DC signal switch commutator spring assembly structure for preventing misinstallation according to claim 1, characterized in that, The reversing spring (1) includes two positioning parts (101) and two contact parts (102) arranged circumferentially. The two positioning parts (101) are flat plates on the same plane. The two contact parts (102) are bent upward at the connection with the positioning parts (101) to form a wing shape. The middle part of each contact part (102) is also arched upward to form a contact point (8). The contact point (8) is used to connect with the reversing circuit on the PCB board. There are two positioning holes (3), which are opened on the two positioning parts (101). There are two positioning feet (7) and two notches (6). The two positioning feet (7) are connected one-to-one to the opposite side of the two positioning parts (101) and extend inward along the radial direction of the reversing spring (1).

3. The DC signal switch commutator spring assembly structure for preventing misinstallation according to claim 2, characterized in that, A circular arc-shaped elongated hole (103) is symmetrically provided on any contact part (102).

4. The DC signal switch commutator spring assembly structure for preventing misinstallation according to claim 2, characterized in that, The top outer edge of the reversing shaft (2) is provided with two upward-protruding arc-shaped baffles (9). The two baffles (9) are symmetrically arranged on both sides of the reversing spring (1) and are close to the outer edge of the reversing spring (1). The two baffles (9) correspond one-to-one with the two positioning parts (101) and are located outside the two positioning parts (101) to limit the reversing spring (1).

5. The DC signal switch commutator spring assembly structure for preventing misinstallation according to claim 2, characterized in that, Two drive holes (10) are provided on the bottom surface of the reversing shaft (2). The two drive holes (10) are directly opposite the contact points (8) of the two contact parts (102). The two drive holes (10) and the two notches (6) are arranged at intervals along the circumferential direction and the interval angle is 90°.

6. A DC signal switch employing the anti-misinstallation DC signal switch commutator spring assembly structure as described in any one of claims 1 to 5.

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