Membrane switch fault detection device

Abstract

The utility model discloses a fault detection device for a membrane switch, and relates to the field of switch detection. The utility model relates to a membrane switch fault detection device, which comprises a support seat, a lifting plate connected to a support rod in a lifting manner, and a top plate fixedly connected above the support seat through the support rod, a positioning groove is formed in the surface of the placing table, and the placing table is installed on the support; a plurality of T-shaped through grooves are formed in the lifting plate at equal intervals; according to the utility model, through cooperative use of the electric telescopic rod, the lifting plate, the T-shaped push rod, the electrified magnetic ring and other parts, when the metal elastic sheet of the membrane switch is pressed and detected, the T-shaped push rod at the corresponding position can be limited and fixed according to the position of the metal elastic sheet on the membrane switch, so that the detection precision is improved. Therefore, the device can carry out fault detection on the membrane switches of different specifications, and not only can the detection efficiency be improved, but also the applicability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch detection, and in particular relates to a membrane switch fault detection device. Background Art

[0002] The membrane switch is an operating system that integrates key functions, indicating elements, and instrument panels. It is widely used in electronics, medical, automotive, home appliances and other fields. Under normal circumstances, the upper and lower contacts of the membrane switch are disconnected. When the membrane switch is pressed, the metal spring of the upper circuit deforms downward and contacts with the spring slot of the lower circuit to form a circuit, triggering the signal.

[0003] At present, the fault detection method for membrane switches in the field mainly involves manually touching and pressing each product to determine whether the metal spring has faults such as misalignment through the window display content. This inspection method has low inspection efficiency, high employee operation intensity and difficult to control inspection accuracy. In addition, missed inspections may occur after employee fatigue, resulting in poor key problems flowing into the back end of the production line. Although there are special membrane switch fault detection devices in the prior art to press the metal spring as a whole, one device is only applicable to one specification of membrane switches. For membrane switches of different specifications, the positions of the metal springs may be different, which requires the use of different devices for detection, and the detection cost is relatively high. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a membrane switch fault detection device which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a membrane switch fault detection device, including a support, a top plate fixedly connected to the top of the support through a support rod, and also including: a lifting plate, which is lifted and connected to the support rod; a placing table with positioning grooves on the surface, which is installed on the support; a plurality of T-shaped through grooves are equidistantly provided on the lifting plate; a T-shaped push rod, which is slidably connected in the T-shaped through groove; an electromagnetic ring, which is fixedly connected in the T-shaped through groove, and the T-shaped push rod is an iron rod.

[0006] Furthermore, an electric telescopic rod is fixedly connected to the top plate, and the telescopic end of the electric telescopic rod is fixedly connected to the lifting plate via a connecting rod.

[0007] In order to facilitate the isolation of the magnetic force of the electromagnetic ring and avoid generating magnetic force on other T-shaped push rods, further, an isolation ring is fixedly connected in the T-shaped through groove, and the isolation ring is sleeved on the outer side of the electromagnetic ring.

[0008] In order to facilitate the control of the pressure of the T-shaped push rod on the membrane switch, further, a telescopic spring is fixedly connected to the lower side of the lifting plate, and a pressure sensor is fixedly connected to the lower end of the telescopic spring, and the lower surface of the pressure sensor is on the same plane as the lower end surface of the T-shaped push rod.

[0009] In order to improve the detection efficiency of the device for the membrane switch, further, a plurality of groups of T-shaped through slots are evenly spaced on the lifting plate.

[0010] In order to facilitate replacement of the placement table with different positioning grooves according to different specifications of the membrane switch, further, the four corners of the bottom of the placement table are fixedly connected with insertion rods, and the support is provided with slots used in conjunction with the insertion rods.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model uses the electric telescopic rod, the lifting plate, the T-shaped push rod and the electromagnetic ring and other components in coordination. When the metal spring of the membrane switch is pressed for detection, the T-shaped push rod at the corresponding position can be limited and fixed according to the position of the metal spring on the membrane switch, so that the device can perform fault detection on membrane switches of different specifications, which not only improves the detection efficiency, but also improves the applicability.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 A schematic diagram of the structure of a membrane switch fault detection device proposed by the utility model Figure 1 ;

[0015] Figure 2 A schematic diagram of the structure of a membrane switch fault detection device proposed by the utility model Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the structure of a membrane switch fault detection device proposed by the utility model when the placement table and the support are separated;

[0017] Figure 4 This is a structural schematic diagram of a lifting plate, a T-shaped push rod, an electromagnetic ring and an isolation ring in a membrane switch fault detection device proposed by the utility model;

[0018] Figure 5 A membrane switch fault detection device proposed by the utility model Figure 4 Schematic diagram of the structure of part A.

[0019] In the figure: 1, support; 101, support rod; 102, top plate; 2, placement table; 201, insertion rod; 3, electric telescopic rod; 4, lifting plate; 401, T-shaped top rod; 402, electromagnetic ring; 403, isolation ring; 404, telescopic spring; 405, pressure sensor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] Embodiment 1:

[0022] Reference Figure 1-Figure 5 A membrane switch fault detection device includes a support 1, a top plate 102 is fixedly connected to the top of the support 1 through a support rod 101, and also includes: a lifting plate 4, which is lifted and connected to the support rod 101; a placement table 2 with a positioning groove on the surface, which is installed on the support 1; a plurality of T-shaped through grooves are equidistantly opened on the lifting plate 4; a T-shaped top rod 401, which is slidably connected in the T-shaped through groove; an electromagnetic ring 402, which is fixedly connected in the T-shaped through groove, and the T-shaped top rod 401 is an iron rod.

[0023] The top plate 102 is fixedly connected with an electric telescopic rod 3 , and the telescopic end of the electric telescopic rod 3 is fixedly connected to the lifting plate 4 via a connecting rod.

[0024] After the membrane switch is produced, if it is necessary to detect whether its metal spring piece is offset and other problems caused by poor conduction faults, first place the membrane switch to be tested in the positioning groove of the placement table 2 to position it, and then connect the connection end of the membrane switch to the external detection equipment. After the connection is completed, the corresponding electromagnetic ring 402 can be energized according to the position of each button on the membrane switch. Since the T-type push rod 401 is an iron rod, the T-type push rod 401 will be fixed under the action of the magnetic force of the electromagnetic ring 402. After the previous work is ready, the electric telescopic rod 3 can be started. The electric telescopic rod 3 will drive the lifting plate 4 to move downward through the connecting rod, and the lifting plate 4 will drive the T-type push rod 401 to move downward. When the fixed T-type push rod 401 contacts the button of the membrane switch, the fixed T-type push rod 401 will press the metal spring in the button of the membrane switch, and then the staff will see the display on the external detection equipment. The on-off content displayed on the screen can determine whether the metal spring in the membrane switch button is normal. When the fixed T-shaped push rod 401 presses the button of the membrane switch, since the other T-shaped push rods 401 are not restricted and fixed, the other T-shaped push rods 401 will slide upward and not press the membrane switch. When the detection of the membrane switch is completed, the lifting plate 4 can be controlled to move up by the electric telescopic rod 3, and then the detected membrane switch is taken out and a new membrane switch is placed, so that the next membrane switch can be fault detected. Through the coordinated use of the electric telescopic rod 3, the lifting plate 4, the T-shaped push rod 401 and the electromagnetic ring 402, when the metal spring of the membrane switch is pressed and detected, the T-shaped push rod 401 at the corresponding position can be limited and fixed according to the position of the metal spring on the membrane switch, so that the device can perform fault detection on membrane switches of different specifications, which not only improves the detection efficiency but also improves the applicability.

[0025] Embodiment 2:

[0026] Reference Figure 1-Figure 5 , a membrane switch fault detection device, which is basically the same as Example 1, and further: an isolation ring 403 is fixedly connected in the T-shaped through groove, and the isolation ring 403 is sleeved on the outside of the electromagnetic ring 402. Through the setting of the isolation ring 403, when part of the electromagnetic ring 402 is energized, the magnetic force of the electromagnetic ring 402 can be isolated to avoid generating magnetic force on other T-shaped top rods 401 and affecting their free movement.

[0027] A telescopic spring 404 is fixedly connected to the lower side of the lifting plate 4, and a pressure sensor 405 is fixedly connected to the lower end of the telescopic spring 404. The lower surface of the pressure sensor 405 and the lower end surface of the T-shaped push rod 401 are on the same plane. Through the arrangement of the telescopic spring 404 and the pressure sensor 405, when the T-shaped push rod 401 moves downward to press the metal spring on the membrane switch, the pressure of the T-shaped push rod 401 on the membrane switch can be controlled according to the pressure transmitted by the pressure sensor 405 to avoid damaging the membrane switch, thereby effectively improving the protection effect of the membrane switch.

[0028] The lifting plate 4 is provided with multiple groups of T-shaped through slots at equal intervals. By providing multiple groups of T-shaped through slots, multiple membrane switches can be tested at one time when testing membrane switches, which effectively improves the testing efficiency of the device for membrane switches.

[0029] The four corners at the bottom of the placement table 2 are fixedly connected with an insertion rod 201, and the support 1 is provided with a slot for use with the insertion rod 201. Through the setting of the insertion rod 201 and the slot, when performing fault detection on the membrane switch, the placement table 2 with different positioning grooves can be replaced according to the different specifications of the membrane switch, so that the device can detect membrane switches of different specifications, effectively improving the applicability of the device.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A membrane switch fault detection device, comprising a support (1), wherein a top plate (102) is fixedly connected to the support (1) via a support rod (101), characterized in that: Also includes: A lifting plate (4) connected to the support rod (101) in a lifting manner; A placement table (2) with positioning grooves on its surface, mounted on the support (1); The lifting plate (4) is provided with a plurality of T-shaped through slots at equal intervals; A T-shaped push rod (401) is slidably connected in the T-shaped through groove; The electromagnetic ring (402) is fixedly connected in the T-shaped through slot, and the T-shaped top rod (401) is an iron rod.

2. A membrane switch fault detection device according to claim 1, characterized in that: An electric telescopic rod (3) is fixedly connected to the top plate (102), and the telescopic end of the electric telescopic rod (3) is fixedly connected to the lifting plate (4) via a connecting rod.

3. A membrane switch fault detection device according to claim 1, characterized in that: An isolation ring (403) is fixedly connected in the T-shaped through groove, and the isolation ring (403) is sleeved on the outer side of the electromagnetic ring (402).

4. A membrane switch fault detection device according to claim 3, characterized in that: A telescopic spring (404) is fixedly connected to the lower side of the lifting plate (4), a pressure sensor (405) is fixedly connected to the lower end of the telescopic spring (404), and the lower surface of the pressure sensor (405) is on the same plane as the lower end surface of the T-shaped push rod (401).

5. A membrane switch fault detection device according to claim 1, characterized in that: The lifting plate (4) is provided with a plurality of groups of T-shaped through grooves at equal intervals.

6. A membrane switch fault detection device according to claim 5, characterized in that: Insertion rods (201) are fixedly connected to the four corners at the bottom of the placement platform (2), and slots for use with the insertion rods (201) are provided on the support (1).

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