Limiting fixture

Abstract

The present disclosure relates to a position limiting jig, including a jig body and a magnetic component. The jig body is provided with an operating hole for a fixing member to pass through. The magnetic component is arranged on the jig body, adjacent to the operating hole, and is used to absorb debris from the fixing member. The present disclosure provides a magnetic component adjacent to the operating hole on the jig body of the position limiting jig, thereby absorbing debris generated during the installation of the fixing member, and adsorbing the debris from the fixing member to the magnetic component. After the position limiting jig is removed from the workpiece, the debris is removed from the workpiece along with the position limiting jig, thereby avoiding the situation where the debris on the fixing member falls off and damages the workpiece, and effectively improving the quality of the workpiece.

Description

Technical Field

[0001] The present disclosure relates to a production tool, and in particular to a position limiting fixture. Background Art

[0002] A limit fixture refers to a tool used to fix the position of a workpiece and protect it so that it can be operated on. For example, when fixing an LED light board to a back panel, a limit fixture is needed to fix the LED light board and the back panel so that a manual or electric screwdriver can be used to screw the screws that serve as fixings into the LED light board and the back panel.

[0003] The bit is generally magnetic so that it can absorb the screw, and the screw will also be magnetized during this process. When the bit rotates the screw, the bit and the screw will produce debris, most of which is absorbed by the magnetism of the bit, and a small part is absorbed by the magnetized screw.

[0004] After the magnetism in the screws is naturally demagnetized, the debris adsorbed on them falls off and may fall on the pins of the LED or control chip, causing a short circuit. Utility Model Content

[0005] In order to overcome the problems existing in the related art, the present disclosure provides a limiting fixture.

[0006] According to an embodiment of the present disclosure, a limiting jig is provided, comprising a jig body and a magnetic component; the jig body comprises an operating hole, the operating hole is provided on the jig body, and is used for a fixing member to pass through; the magnetic component is arranged on the jig body, adjacent to the operating hole, and is used for absorbing debris of the fixing member.

[0007] In some embodiments, the magnetic component includes a solenoid, which is disposed on the fixture body. When the power is connected, the solenoid generates a magnetic field to absorb the debris of the fixing member. When the power is disconnected, the solenoid is demagnetized to allow the absorbed debris to fall off.

[0008] In some embodiments, the positive pole and / or the negative pole of the solenoid includes a plurality of power-on pins, and the plurality of power-on pins are arranged at intervals along the extension direction of the solenoid.

[0009] In some embodiments, the positive pole of the solenoid is provided with a first positive power pin, a second positive power pin, and a third positive power pin in sequence from the end to the middle of the solenoid, and the negative pole of the solenoid is provided with a first negative power pin, a second negative power pin, and a third negative power pin in sequence from the end to the middle of the solenoid, and each of the first positive power pin, the second positive power pin, and the third positive power pin cooperates with each of the first negative power pin, the second negative power pin, and the third negative power pin to form a loop.

[0010] In some embodiments, the first positive power pin and the first negative power pin cooperate to form a first circuit, the second positive power pin and the second negative power pin cooperate to form a second circuit, the third positive power pin and the third negative power pin cooperate to form a third circuit, and one of the first circuit, the second circuit, and the third circuit is connected to a power supply.

[0011] In some embodiments, a plurality of the energized pins are evenly distributed along an extending direction of the solenoid.

[0012] In some embodiments, the magnetic assembly includes two or more solenoids, and each solenoid is distributed around the operating hole.

[0013] In some embodiments, the limiting fixture includes an adjusting unit, which is electrically connected to the magnetic component. The adjusting unit adjusts the magnetic field strength of the magnetic component by changing the impedance in the loop according to the received electrical signal.

[0014] In some embodiments, the regulating unit includes a voltage regulating element with variable impedance, and the voltage regulating element is connected in series with the solenoid to regulate the voltage across the solenoid.

[0015] In some embodiments, the magnetic assembly includes two or more solenoids, and the voltage regulating element is connected in series with each of the solenoids.

[0016] In some embodiments, the fixture includes a sink groove formed on the fixture body, the operating hole is formed in the sink groove, and the solenoid is disposed in the sink groove.

[0017] In some embodiments, the fixture body includes a first surface in contact with the workpiece to be limited, and a second surface arranged opposite to the first surface, and the magnetic component is arranged on the second surface.

[0018] In some embodiments, one magnetic pole of the magnetic component is disposed close to the operating hole, and the other magnetic pole is disposed away from the operating hole.

[0019] In some embodiments, the limiting fixture includes a plurality of operating holes arranged at intervals and a plurality of magnetic components respectively arranged corresponding to each of the operating holes.

[0020] In some embodiments, the limiting fixture includes a magnetic pad, and the magnetic pad absorbs the debris absorbed by the magnetic component after the magnetic component is demagnetized.

[0021] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by arranging a magnetic component adjacent to the operating hole on the jig body, debris generated by the fixing part during the installation process is adsorbed and detached from the fixing part together with the magnetic component, thereby avoiding residual debris on the fixing part to damage the workpiece and effectively improving the quality of the workpiece.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] Figure 1 It is a schematic structural diagram of a position limiting fixture according to an exemplary embodiment.

[0025] Figure 2 yes Figure 1 Enlarged view of point E in the middle.

[0026] Figure 3 is a schematic diagram of a magnetic component according to an exemplary embodiment.

[0027] Figure 4 is a schematic diagram of a magnetic component according to another exemplary embodiment.

[0028] Figure 5 is a schematic diagram of a magnetic component according to another exemplary embodiment.

[0029] Figure 6 is a schematic diagram of a magnetic component according to another exemplary embodiment.

[0030] Figure 7 is a schematic diagram of a magnetic component according to another exemplary embodiment.

[0031] Figure 8 is a schematic diagram of a magnetic component according to another exemplary embodiment.

[0032] Among them: 1. fixture body; 11. operating hole; 12. sink; 2. magnetic component; 21. solenoid; 211. power pin; 22. adjustment unit; 23. iron core; 24. rectifier; 3. fixing part; 4. magnetic pad; 5. debris; 6. LED light board; 61. LED lamp beads. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0034] In an embodiment of the present disclosure, the limiting fixture includes: a fixture body and a magnetic component, the fixture body includes an operating hole opened on the fixture body for allowing a fixing member to pass through; the magnetic component is arranged on the fixture body, adjacent to the operating hole, and is used to absorb debris from the fixing member.

[0035] By arranging a magnetic component adjacent to the operating hole on the jig body, debris generated during the installation of the fixing part is adsorbed and separated from the fixing part along with the magnetic component, thereby avoiding residual debris on the fixing part to damage the workpiece and effectively improving the quality of the workpiece.

[0036] The limit fixture refers to a tool used to fix the position of a workpiece so as to operate the workpiece. For example, when fixing the LED light board 6 to the back plate, a limit fixture is needed to fix the LED light board 6 and the back plate so that a manual or electric screwdriver can be used to screw the screws into the LED light board 6 and the back plate. The LED light board 6 can be applied to a television or other electrical equipment. Of course, the workpiece is not limited to the LED light board 6 and the back plate, but can also be other workpieces that need to remove debris 5 generated during the operation.

[0037] Figure 1 is a structural diagram of a position limiting fixture according to an exemplary embodiment. Figure 2 yes Figure 1 The enlarged view of point E in the middle is as follows: Figure 1 , Figure 2 As shown, the limiting fixture may include a fixture body 1 and a magnetic component 2. For example, the fixture body 1 may include an operation hole 11, and the operation hole 11 may be opened on the fixture body 1 for the fixing member 3 to pass through. The fixing member 3 may be a part that needs to be installed on the workpiece to be limited. For example, when the workpiece is an LED light board 6 and a backboard, the fixing member 3 is a screw that needs to be screwed into the LED light board 6 and the backboard.

[0038] In the embodiment of the present disclosure, the magnetic component 2 may be disposed on the fixture body 1 and may be adjacent to the operating hole 11 , and is used to absorb the debris 5 of the fixing member 3 .

[0039] In the embodiment of the present disclosure, the fixture body 1 may be a structure for directly limiting the workpiece. At the same time, the fixture body 1 may also guide tools such as a screwdriver bit.

[0040] The operating hole 11 passes through the fixture body 1 , and the fixing member 3 refers to a part such as a screw that needs to be installed on the workpiece.

[0041] After the fixture body 1 fixes the workpiece, the fixing member 3 passes through the operating hole 11 and is installed on the workpiece.

[0042] When the workpiece is an LED board and a back plate, the screw as the fixing member 3 passes through the operating hole 11 and is screwed into the LED board and the back plate under the action of the screwdriver bit.

[0043] In this embodiment, by arranging the magnetic component 2 at a position adjacent to the operating hole 11, when the fixing member 3 generates debris 5 during installation on the workpiece, the debris 5 will be absorbed by the magnetic component 2 and will be separated from the workpiece and the fixing member 3 along with the limiting fixture after the limiting fixture is removed, thereby preventing the debris 5 from remaining on the fixing member 3 and causing damage to the workpiece. Even if the fixing member 3 is magnetized during installation, the debris 5 will be absorbed and separated by the magnetic component 2 under the stronger magnetic field of the magnetic component 2.

[0044] like Figure 1 , Figure 2 As shown, the limiting fixture may include an adjusting unit 22, which is electrically connected to the magnetic component 2. The adjusting unit 22 adjusts the magnetic field strength of the magnetic component 2 by changing the impedance in the loop according to the received electrical signal.

[0045] In some embodiments, the adjustment unit 22 can change the impedance in the loop in a variety of ways. For example, the adjustment unit 22 can include multiple resistors that can be connected in series to the loop, and each resistor is provided with a switch in parallel. When the switch connected in parallel to the resistor is closed, the resistor is short-circuited, and the impedance in the loop is reduced. When the switch connected in parallel to the resistor is disconnected, the resistor is connected in series to the loop, and the impedance in the loop increases. For another example, the adjustment unit 22 can include a component such as a sliding rheostat that can change its own impedance to directly change the impedance in the loop.

[0046] In the embodiment of the present disclosure, according to different working environments of the position limiting fixture, the magnetic field strength of the magnetic component 2 can be adjusted to meet the needs through the adjustment unit 22. For example, when there are more debris 5 or the fixing part 3 is strongly magnetized, the magnetic field strength of the magnetic component 2 can be enhanced through the adjustment unit 22 to absorb the debris 5; when there are fewer debris 5 or the fixing part 3 is not magnetized, the magnetic field strength of the magnetic component 2 can be reduced through the adjustment unit 22.

[0047] Figure 3 is a schematic diagram of a magnetic component 2 according to another exemplary embodiment, such as Figure 3As shown, the magnetic component 2 may include a solenoid 21, which is disposed on the fixture body 1. When the power is connected, the solenoid 21 generates a magnetic field to absorb the debris of the fixing member. When the power is disconnected, the solenoid 21 is demagnetized to allow the absorbed debris 5 to fall off.

[0048] The solenoid 21 is a tubular body wound along an axis using an energized wire. When current is connected to the solenoid 21, the solenoid 21 can generate a magnetic field to adsorb the debris 5. When the solenoid 21 is powered off, the magnetic field disappears.

[0049] The solenoid 21 may include a Figure 3 Electrode A and electrode B, or electrode C and electrode D shown in .

[0050] In some embodiments, the circuit connected to the solenoid 21 is a DC circuit. When the position limiting fixture needs to be used in an AC power grid, a rectifier 24 or other device can be provided to convert the AC power into a DC power.

[0051] An iron core 23 may be inserted into the solenoid 21, and the extension direction of the iron core 23 is consistent with the extension direction of the solenoid 21. The iron core 23 can effectively enhance the magnetic field strength.

[0052] In some embodiments, the length of the core 23 is the same as that of the solenoid 21 or slightly greater than that of the solenoid 21. A sufficient length of the core 23 can fully enhance the magnetic field strength of the solenoid 21 and provide support for the wire wound around the solenoid 21.

[0053] In this embodiment, the solenoid 21 is used as the magnetic field source of the magnetic component 2, so that the magnetic field of the magnetic component 2 can be controllable. When it is necessary to absorb the debris 5 from the fixing member 3, the solenoid 21 is connected to the power supply so that the solenoid 21 generates a magnetic field; when the limiting fixture is removed from the workpiece for cleaning, the power supply of the solenoid 21 is disconnected to demagnetize the solenoid 21, so that the debris 5 absorbed on the magnetic component 2 falls off, which is convenient for cleaning.

[0054] In some embodiments, the magnetic component 2 can also use a permanent magnet as a magnetic source, and does not need to be connected to a separate circuit, so that the structure is simple and easy to maintain. Alternatively, the permanent magnet can be used in combination with the solenoid 21. When the magnetic field strength requirement is low, the magnetic field is provided only by the permanent magnet. When the magnetic field strength requirement is high, the solenoid 21 is connected to the power supply circuit to enhance the magnetic field strength.

[0055] Figure 4 is a schematic diagram of a magnetic component 2 according to another exemplary embodiment, such as Figure 4As shown, the positive pole and / or the negative pole of the solenoid 21 may include a plurality of power pins 211 , and the plurality of power pins 211 are arranged at intervals along the extension direction of the solenoid 21 .

[0056] When the power supply is connected to the solenoid 21 through different power pins 211, the solenoid 21 is connected to the power circuit at different lengths and the number of coil turns is different, and the magnetic field strength generated is also different. In use, the magnetic field strength generated by the magnetic component 2 can be controlled by selecting power pins 211 connected to different positions. The selection of these power pins 211 can be manually adjusted by the user, or a dedicated gear switch can be set to automatically adjust.

[0057] As an implementation method of this embodiment, the positive and negative electrodes of the solenoid 21 are each provided with three power pins 211, which are arranged in sequence along the extension direction of the solenoid 21. When the power pin 211 connected to the power circuit is closer to the end of the solenoid 21, the length of the solenoid 21 connected to the power circuit is longer, the number of coil turns is more, and the magnetic field strength generated is stronger; when the power pin 211 connected to the power circuit is closer to the middle of the solenoid 21, the length of the solenoid 21 connected to the power circuit is shorter, the number of coil turns is less, and the magnetic field strength generated is weaker.

[0058] Among them, the three power pins 211 of the positive pole of the solenoid 21 are the first positive power pin A1, the second positive power pin A2, and the third positive power pin A3 from the end of the solenoid 21 to the middle of the solenoid 21, and the three power pins 211 of the negative pole of the solenoid 21 are the first negative power pin B1, the second negative power pin B2, and the third negative power pin B3 from the end of the solenoid 21 to the middle of the solenoid 21. Each of the three power pins 211 of the positive pole, the first positive power pin A1, the second positive power pin A2, and the third positive power pin A3 can cooperate with each of the first negative power pin B1, the second negative power pin B2, and the third negative power pin B3 of the negative pole to form a loop.

[0059] In some embodiments, the first positive power-on pin A1 of the positive pole of the solenoid 21 can cooperate with the first negative power-on pin B1 of the negative pole of the solenoid 21 to form a first circuit, the second positive power-on pin A2 of the positive pole of the solenoid 21 can cooperate with the second negative power-on pin B2 of the negative pole of the solenoid 21 to form a second circuit, and the third positive power-on pin A3 of the positive pole of the solenoid 21 can cooperate with the third negative power-on pin B3 of the negative pole of the solenoid 21 to form a third circuit. The first circuit, the second circuit, and the third circuit are selectively connected to the power supply to form three gears with distinct strength differences.

[0060] In some embodiments, Figure 4As shown, another solenoid 21 may include a fourth negative pole power pin C1, a fifth negative pole power pin C2, and a sixth negative pole power pin C3, which are arranged in sequence at the negative pole from the end of the solenoid 21 to the middle of the solenoid 21, and a fourth positive pole power pin D1, a fifth positive pole power pin D2, and a sixth positive pole power pin D3, which are arranged in sequence at the positive pole from the end of the solenoid 21 to the middle of the solenoid 21.

[0061] In some embodiments, Figure 5 As shown, a person skilled in the art can set any number of power pins 211, such as a seventh positive power pin A4, a seventh negative power pin B4, an eighth negative power pin C4, and an eighth positive power pin D4 that cooperate with each other.

[0062] As an implementation of this embodiment, a plurality of energized pins 211 may be evenly distributed along the extension direction of the solenoid 21 .

[0063] Uniform distribution does not mean that the positive power pins 211 and the negative power pins 211 are uniformly distributed on the entire solenoid 21, but that the positive power pins 211 are uniformly distributed on one pole of the solenoid 21, and the negative power pins 211 are uniformly distributed on the other pole of the solenoid 21. Alternatively, uniform distribution means that the spacing between the power pins 211 of the same electrode is the same.

[0064] In this embodiment, a plurality of power-on pins 211 are evenly distributed along the extension direction of the solenoid 21, so that the length of the solenoid 21 connected to the power supply circuit by different combinations of power-on pins 211 can be closer to linear change, and the change of the magnetic field strength generated by it will also be closer to linear change, which is convenient for gear calibration and use.

[0065] like Figure 2 As shown, the magnetic assembly 2 includes two or more solenoids 21 , and each solenoid 21 is distributed around the operating hole 11 .

[0066] The fixing part 3 and the operating hole 11 both have a certain volume, and may block the debris 5 attached to the fixing part 3 and the operating hole 11 at a specific angle. Arranging two or more magnetic components 2 around the solenoid 21 can adsorb the debris 5 on the fixing part 3 and the operating hole 11 from multiple angles, avoiding the blocking effect of the fixing part 3 and the operating hole 11 on the debris 5, and adsorbing the debris 5 more cleanly.

[0067] In some embodiments, two or more solenoids 21 are evenly distributed around the operating hole 11 .

[0068] In some embodiments, when the magnetic assembly 2 includes two solenoids 21, the two solenoids 21 are arranged opposite to each other with the operating hole 11 spaced apart. The debris 5 on the operating hole 11 and the fixing member 3 can be basically adsorbed from two directions, which not only controls the number of solenoids 21 used, but also achieves a better debris 5 adsorption effect.

[0069] Figure 5 is a schematic diagram of a magnetic component 2 according to another exemplary embodiment, such as Figure 5 As shown, the regulating unit 22 includes a voltage regulating element with variable impedance, which is connected in series with the solenoid 21 and is used to regulate the voltage across the solenoid 21 .

[0070] The impedance of the voltage regulating element itself is variable, and a variety of structures can be used, such as a sliding resistor connected to the circuit.

[0071] After the voltage regulating element is connected in series with the solenoid 21 , the intensity of the magnetic field generated by the solenoid 21 can be changed by adjusting the voltage across the solenoid 21 .

[0072] In some embodiments, the voltage regulating element in the regulating unit 22 may also be replaced with a current regulating element, and the intensity of the magnetic field generated by the solenoid 21 may be changed by changing the magnitude of the current flowing through the solenoid 21 .

[0073] As an implementation method of this embodiment, Figure 5 As shown, the magnetic assembly 2 includes two or more solenoids 21 , and the voltage regulating element is connected in series with each solenoid 21 .

[0074] The solenoids 21 may be connected in series or in parallel.

[0075] In some embodiments, the solenoids 21 are connected in parallel, and the voltages at both ends of the solenoids 21 can be synchronously adjusted by a voltage regulating element, thereby changing the magnetic field strength.

[0076] like Figure 2 As shown, the limiting fixture includes a recessed groove 12 formed on the fixture body 1 , an operating hole 11 formed in the recessed groove 12 , and a solenoid 21 disposed in the recessed groove 12 .

[0077] The fixture body 1 has a certain thickness, and a part of the surface of the fixture body 1 is recessed inward from the surface of the fixture body 1 to form a sink 12. The bottom wall of the sink 12 is relatively thin, and the operation hole 11 is opened at the center of the sink 12. The solenoid 21 of the magnetic component 2 is arranged on the bottom wall of the sink 12, adjacent to the operation hole 11.

[0078] The adjustment unit 22 of the magnetic component 2 can be arranged outside the sink 12 or inside the sink 12 .

[0079] In some embodiments, the regulating unit 22 is disposed outside the trough 12 , which does not affect the cleaning of the trough 12 and can reduce the size of the trough 12 .

[0080] The fixture body 1 has a certain thickness. When the fixture body 1 is installed on the workpiece, the fixing member 3 (such as a screw) will be installed on the workpiece and sink into the fixture body 1. For example, when the screw is screwed into the LED light board 6, the height of the screw nut will gradually decrease relative to the LED light board 6 and finally sink into the fixture body 1. If the magnetic component 2 is directly installed on the surface of the fixture body 1, the debris 5 may not be adsorbed by the magnetic component 2 because the debris 5 has been hidden in the operating hole 11 along with the fixing member 3.

[0081] A sink groove 12 is opened on the jig body 1, and the solenoid 21 is set in the sink groove 12, so that the solenoid 21 can be closer to the fixing part 3 installed on the workpiece. Even if the fixing part 3 has been immersed in the jig body 1, the solenoid 21 can still absorb the debris 5 on the fixing part 3 onto the solenoid 21, avoiding the influence of the thickness of the limiting jig.

[0082] like Figure 1 , Figure 2 As shown, the fixture body 1 includes a first surface in contact with the workpiece to be limited, and a second surface arranged opposite to the first surface, and the magnetic component 2 is arranged on the second surface.

[0083] In some embodiments, the sink 12 may be opened on the second surface, and the solenoid 21 of the magnetic assembly 2 may be disposed on the bottom of the sink 12. Of course, the solenoid 21 may also be disposed on the side wall of the sink 12, as long as the solenoid 21 can complete the adsorption of the debris 5 in the operating hole 11.

[0084] In some embodiments, the solenoid 21 may be directly exposed, or a shell may be provided outside the solenoid 21 to protect the solenoid 21 and facilitate cleaning of the debris 5 adsorbed thereon.

[0085] After the magnetic component 2 absorbs the debris 5, the debris 5 may still fall off the magnetic component 2. The magnetic component 2 is arranged on the second surface, so that the fixture body 1 can isolate the debris 5 on the magnetic component 2 from the workpiece, preventing the debris 5 absorbed on the magnetic component 2 from falling onto the workpiece when the limit fixture moves.

[0086] Furthermore, there is no need to reserve space for the magnetic component 2 between the limiting fixture and the workpiece, and the limiting fixture and the workpiece can be installed more closely, making the limiting effect more effective.

[0087] Furthermore, generally speaking, the fixture body 1 of the limit fixture is a flat structure as a whole, and is placed horizontally above the workpiece when in use. At this time, the debris 5 will tend to fall due to gravity. The sink 12 set on the second surface of the fixture body 1 will have a certain receiving and accommodating effect on the debris 5, preventing the debris 5 from falling onto the workpiece, and effectively protecting the workpiece.

[0088] like Figure 3 , Figure 4 As shown, one magnetic pole of the magnetic component 2 is disposed close to the operating hole 11 , and the other magnetic pole is disposed away from the operating hole 11 .

[0089] In some embodiments, one end of the solenoid 21 is close to the operating hole 11, and the other end is far away from the operating hole 11. One end of the solenoid 21 is one of the magnetic poles, and the other end is the other magnetic pole.

[0090] The magnetic force of the magnetic component 2 (or solenoid 21) is strongest at the two poles, and placing it close to the operating hole 11 can maximize its adsorption effect on the debris 5. The magnetic force between the two poles of the magnetic component 2 (or solenoid 21) is weak, and the debris 5 cannot be effectively adsorbed.

[0091] The solenoid 21 may also be replaced by a permanent magnet or other magnetic elements, and the arrangement is also such that one magnetic pole is close to the operating hole 11 and the other magnetic pole is far away from the operating hole 11 .

[0092] like Figure 1 As shown, the limiting fixture includes a plurality of operating holes 11 arranged at intervals and a plurality of magnetic components 2 respectively arranged corresponding to the operating holes 11 .

[0093] The number of operating holes 11 can be set according to the needs of the workpiece. For example, the workpiece is an LED board, which needs to be screwed in with three rows and three columns of nine screws as fixing parts 3 at intervals. The limiting fixture sets the corresponding nine operating holes 11 at the fixed positions where the screws need to be screwed in, and sets a total of nine magnetic components 2 for the nine operating holes 11 one by one.

[0094] In some embodiments, nine sink grooves 12 are formed on the fixture body 1 , and nine operation holes 11 are respectively formed in the nine sink grooves 12 , and one operation hole 11 is formed in each sink groove 12 .

[0095] The plurality of operating holes 11 and the corresponding plurality of magnetic components 2 can absorb all the debris 5 generated by each fixing member 3 while ensuring that the workpiece is effectively fixed by the plurality of fixing members 3, thereby avoiding damage to the workpiece caused by residual debris 5.

[0096] Figure 6 , Figure 7 , Figure 8is a schematic diagram of a magnetic component according to another exemplary embodiment. Figure 8 As shown, the limiting fixture may include a magnetic pad 4, and the magnetic pad 4 absorbs the debris 5 absorbed by the magnetic component 2 after the magnetic component 2 is demagnetized.

[0097] The magnetic pad 4 refers to a tool having a certain magnetism, which can adsorb the debris 5 and generally has a certain area.

[0098] There are many ways to demagnetize the magnetic component 2. For example, when the magnetic source of the magnetic component 2 is a permanent magnet, it can be demagnetized by heating, knocking, etc.; when the magnetic source of the magnetic component 2 is a solenoid 21, it can be demagnetized by disconnecting the power supply, etc.

[0099] like Figure 6 , Figure 7 As shown, when the solenoid 21 is used as the magnetic source of the magnetic component 2, when the workpiece is fixed by the limit fixture, the solenoid 21 can be energized to generate magnetism, and the magnetic component 2 absorbs the debris 5 on the fixing part 3 to the magnetic component 2; Figure 8 As shown, after the limiting is completed, the limiting fixture is removed, the power supply of the solenoid 21 can be disconnected to demagnetize the solenoid 21, and the limiting fixture is placed on the magnetic pad 4 or suspended above the magnetic pad 4. The magnetism of the magnetic pad 4 is used to adsorb the debris 5 adsorbed by the magnetic component 2 onto the magnetic pad 4, thereby cleaning the magnetic component 2.

[0100] In some embodiments, the limited fixture is the LED light board 6 and the backboard, and the fixing member 3 is a screw. The LED light board 6 and the backboard are fixed by the limited fixture, and the LED light board 6 is protected. The screw is screwed into the LED light board 6 and the backboard using an electric screwdriver, thereby achieving the installation of the LED light board 6 and the backboard.

[0101] A number of LED lamp beads 61 are arranged on the LED light board 6. In order to prevent the limiting fixture from damaging the LED lamp beads 61 and to protect the LED lamp beads 61 and the LED light board 6, the fixture body 1 of the limiting fixture needs to be set to a shape that covers the LED light board 6, which is generally a flat rectangle. Of course, it can also be designed into other shapes according to actual needs. A through hole for avoiding the LED lamp beads 61 is set at the position corresponding to the LED lamp beads 61 on the fixture body 1 to avoid damage to the LED lamp beads 61. In order to strengthen the protection of the LED lamp beads 61, the through hole can also be set as a closed pit on the side away from the LED lamp beads 61, thereby achieving both avoidance and protection of the LED lamp beads 61.

[0102] The LED light board 6 can be applied to a variety of devices, such as televisions, etc. The limiting fixture is not limited to being applied to the fixed installation of the LED light board 6 and the back plate, and can also be applied to other processes and workpieces that require the adsorption of debris 5.

[0103] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0104] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0105] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0106] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0107] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0108] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0109] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A position limiting fixture, characterized in that: include: The fixture body includes: An operating hole is provided on the fixture body and is used for the fixing member to pass through; as well as A magnetic component is arranged on the fixture body and adjacent to the operating hole, and is used for absorbing debris of the fixing member.

2. The position limiting fixture according to claim 1, characterized in that: The magnetic assembly comprises: The solenoid is arranged on the fixture body. When the power is connected, the solenoid generates a magnetic field to absorb the debris of the fixing part. When the power is disconnected, the solenoid is demagnetized to make the absorbed debris fall off.

3. The position limiting fixture according to claim 2, characterized in that: The positive pole and / or the negative pole of the solenoid comprises a plurality of power-on pins, and the plurality of power-on pins are arranged at intervals along the extending direction of the solenoid.

4. The position limiting fixture according to claim 3, characterized in that: The positive pole of the solenoid is provided with a first positive power pin, a second positive power pin, and a third positive power pin in sequence from the end to the middle of the solenoid, and the negative pole of the solenoid is provided with a first negative power pin, a second negative power pin, and a third negative power pin in sequence from the end to the middle of the solenoid, and each of the first positive power pin, the second positive power pin, and the third positive power pin cooperates with each of the first negative power pin, the second negative power pin, and the third negative power pin to form a loop.

5. The position limiting fixture according to claim 4, characterized in that: The first positive power pin and the first negative power pin cooperate to form a first circuit, the second positive power pin and the second negative power pin cooperate to form a second circuit, the third positive power pin and the third negative power pin cooperate to form a third circuit, and one of the first circuit, the second circuit, and the third circuit is connected to a power supply.

6. The position limiting fixture according to any one of claims 3 to 5, characterized in that: The plurality of energized pins are evenly distributed along the extension direction of the solenoid.

7. The position limiting fixture according to any one of claims 2 to 5, characterized in that: The magnetic component includes two or more solenoids, and each solenoid is distributed around the operating hole.

8. The position limiting fixture according to any one of claims 2 to 5, characterized in that: The limiting fixture comprises: An adjusting unit is electrically connected to the magnetic component, and the adjusting unit adjusts the magnetic field strength of the magnetic component by changing the impedance in the loop according to the received electrical signal.

9. The position limiting fixture according to claim 8, characterized in that: The adjustment unit comprises: A voltage regulating element with variable impedance is connected in series with the solenoid and is used to regulate the voltage across the solenoid.

10. The position limiting fixture according to claim 9, characterized in that: The magnetic component includes two or more solenoids, and the voltage regulating element is connected in series with each of the solenoids.

11. The position limiting fixture according to any one of claims 2 to 5, characterized in that: The limiting fixture comprises: A sink groove is provided on the fixture body, the operation hole is provided in the sink groove, and the solenoid is arranged in the sink groove.

12. The position limiting fixture according to any one of claims 1 to 5, characterized in that: The fixture body includes: A first surface, in contact with the workpiece to be restrained; and The second surface is arranged opposite to the first surface, and the magnetic component is arranged on the second surface.

13. The position limiting fixture according to any one of claims 1 to 5, characterized in that: One magnetic pole of the magnetic component is close to the operating hole, and the other magnetic pole is far away from the operating hole.

14. The position limiting fixture according to any one of claims 1 to 5, characterized in that: The position limiting fixture includes a plurality of operating holes arranged at intervals and a plurality of magnetic components respectively arranged corresponding to the operating holes.

15. The position limiting fixture according to any one of claims 1 to 5, characterized in that: The limiting fixture comprises: The magnetic pad absorbs the debris absorbed by the magnetic component after the magnetic component is demagnetized.

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