Novel handheld negative pressure suction pen

Abstract

The utility model discloses a novel handheld negative pressure suction pen which comprises a pen shell, a pen point, a main control board, a negative pressure pump and a control valve. The pen point is arranged at the front end of the pen shell; the main control board is arranged in the pen shell; the negative pressure pump is arranged in the pen shell and is electrically connected with the main control board; the control valve is arranged in the pen shell and comprises a valve body, a valve piston, a valve spring and a valve switch; the valve body is provided with a cavity, and a first normally-open channel, a second normally-open channel and a normally-closed channel are formed in the valve body. By the adoption of the control valve, a valve switch does not need to be pressed all the time when the suction pen sucks an object, the valve switch is pressed only when release is needed, and operation and use are more convenient. Meanwhile, the valve switch and the pump switch are separated, and the pump switch is always in a working state after being turned on, so that the negative pressure establishing time of the negative pressure pump is shortened, the adsorption speed is increased, and the working efficiency of the suction pen is improved.

Description

Technical Field

[0001] The utility model relates to the technology of negative pressure suction pen field, in particular to a novel handheld negative pressure suction pen. Background Art

[0002] In the current large-scale production of electronic products, automatic placement machines are commonly used to install surface components. However, in the testing of new products and small-batch production, manual placement technology is still required. In order to improve installation efficiency and ensure product quality, some special tools that are easy to operate are also needed, such as negative pressure suction pens, which can be used to pick up and place objects.

[0003] The existing negative pressure suction pen has realized the miniaturization integration of power supply, negative pressure pump, control valve and suction nozzle, and has initially realized the function of the suction pen, but there are the following problems:

[0004] 1. The valve switch that controls the adsorption and release of the suction pen is not designed properly. When the suction pen is working, you need to keep pressing the valve switch and release it when it is released. Long-term and high-frequency use will easily cause finger soreness.

[0005] 2. The existing negative pressure suction pen has no counting function, no screen display and corresponding buttons, lacks user interaction, and cannot display the battery power.

[0006] 3. The valve control switch and pump switch of the existing negative pressure suction pen are controlled by a button. Each time the pump is started, it takes a certain amount of time to build up negative pressure. The system responds slowly and the suction pen efficiency is low.

[0007] 4. The existing negative pressure suction pen is not a rechargeable battery, but a disposable battery, which is not rechargeable and inconvenient to use.

[0008] Therefore, it is necessary to improve the current negative pressure suction pen. Utility Model Content

[0009] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a new handheld negative pressure suction pen, which can effectively solve the problems of the existing negative pressure suction pen being inconvenient to use and having low suction efficiency.

[0010] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0011] A new handheld negative pressure suction pen includes a pen housing, a pen head, a main control board, a negative pressure pump and a control valve; the pen head is arranged at the front end of the pen housing; the main control board is arranged in the pen housing; the negative pressure pump is arranged in the pen housing and is electrically connected to the main control board; the control valve is arranged in the pen housing, and the control valve includes a valve body, a valve piston, a valve spring and a valve switch; the valve body has a cavity, and a first normally open channel, a second normally open channel and a normally closed channel are opened on the valve body, the first normally open channel is connected between the cavity and the pen head, the second normally open channel is connected to the normally closed channel, and the second normally open channel is connected to the normally closed channel. The two normally open channels are connected between the cavity and the input end of the negative pressure pump, and the normally closed channel is connected between the cavity and the outside world; the valve piston is arranged in the cavity so as to be movable back and forth, and the valve piston moves back and forth to open or close the normally closed channel; the valve spring is arranged in the cavity and prompts the valve piston to move to keep the normally closed channel closed; the valve switch is pressably arranged on the pen housing, the inner end of the valve switch passes through the normally closed channel and presses on the valve piston, and the outer end of the valve switch is exposed outside the pen housing, and the valve switch prompts the valve piston to move to open the normally closed channel.

[0012] Preferably, the valve piston is made of a hard material, the valve spring abuts against the bottom of the valve piston, the inner end of the valve switch abuts against the center of the top surface of the valve piston, and a sealing ring is fixed to the edge of the top surface of the valve piston.

[0013] Preferably, the first normally open channel is connected to the pen tip through a first transfer tube.

[0014] Preferably, the second normally open channel is connected to the input end of the negative pressure pump through a second transfer tube.

[0015] Preferably, the main control board has a display screen, and the display screen is exposed on the outer surface of the pen housing.

[0016] Preferably, the main control board has a pump switch and a plurality of buttons, the pump switch and the plurality of buttons are exposed on the outer surface of the pen housing, and the pump switch is a sliding self-locking switch.

[0017] Preferably, a rechargeable lithium battery is provided in the pen housing, the rechargeable lithium battery is electrically connected to the main control board, and a charging interface is provided on the main control board, and the charging interface is exposed on the pen housing.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0019] First, by adopting the control valve of this utility model, the suction pen does not need to hold down the valve switch when sucking objects. It only needs to press it when it needs to be released, which makes it easier to operate. At the same time, the valve switch and the pump switch are separated. When the pump switch is turned on, it is always in the working state, which reduces the time for the negative pressure pump to build up negative pressure, increases the suction speed, and improves the working efficiency of the suction pen.

[0020] Second, by adding a screen display and corresponding control buttons to display information such as count and battery power, it is convenient for users to use.

[0021] 3. By using a rechargeable lithium battery and integrating a charging interface on the main control board, there is no need to remove the battery for charging, making it very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an assembly perspective view of a preferred embodiment of the present utility model;

[0023] Figure 2 This is a schematic three-dimensional assembly diagram of a preferred embodiment of the present invention from another angle;

[0024] Figure 3 It is a cross-sectional view of a preferred embodiment of the present utility model;

[0025] Figure 4 It is another cross-sectional view of a preferred embodiment of the present invention.

[0026] Description of the accompanying drawings:

[0027] 10. Pen shell 11. Upper shell

[0028] 12. Lower housing 101, installation cavity

[0029] 102, battery compartment 20, pen tip

[0030] 30. Main control board 31. Display screen

[0031] 32. Pump switch 33. Button

[0032] 34. Charging port 40. Negative pressure pump

[0033] 50. Control valve 51. Valve body

[0034] 52. Valve piston 53. Valve spring

[0035] 54. Valve switch 55. Sealing ring

[0036] 56. First transfer tube 57. Second transfer tube

[0037] 501, cavity 502, first normally open channel

[0038] 503, second normally open channel 504, normally closed channel

[0039] 60. Rechargeable lithium battery DETAILED DESCRIPTION

[0040] Please refer to Figures 1 to 4As shown, it shows the specific structure of a preferred embodiment of the present utility model, including a pen housing 10, a pen head 20, a main control board 30, a negative pressure pump 40 and a control valve 50.

[0041] The pen housing 10 has an installation cavity 101 and a battery compartment 102 therein. The battery compartment 102 is located behind the installation cavity 101 . In this embodiment, the pen housing 10 is formed by splicing an upper housing 11 and a lower housing 12 from top to bottom.

[0042] The pen tip 20 is disposed at the front end of the pen housing 10 .

[0043] The main control board 30 is disposed within the pen housing 10. In this embodiment, the main control board 30 includes a display screen 31, which is exposed on the outer surface of the pen housing 10 and displays information such as the count and battery level for user convenience. The main control board 30 also includes a pump switch 32 and multiple buttons 33, which are exposed on the outer surface of the pen housing 10. The pump switch 32 is a sliding, self-locking switch. In this embodiment, the main control board 30 is secured within the mounting cavity 101.

[0044] The negative pressure pump 40 is disposed in the pen housing 10 and is electrically connected to the main control board 30. In this embodiment, the negative pressure pump 40 is fixed in the mounting cavity 101.

[0045] The control valve 50 is arranged in the pen housing 10, and the control valve 50 includes a valve body 51, a valve piston 52, a valve spring 53 and a valve switch 54; the valve body 51 has a cavity 501, and a first normally open channel 502, a second normally open channel 503 and a normally closed channel 504 are opened on the valve body 51. The first normally open channel 502 is connected between the cavity 501 and the pen tip 20, the second normally open channel 503 is connected between the cavity 501 and the input end of the negative pressure pump 40, and the normally closed channel 504 is connected between the cavity 501 and the outside The valve piston 52 is movably disposed in the cavity 501, opening and closing the normally closed passage 504. The valve spring 53 is disposed in the cavity 501 and forces the valve piston 52 to move, thereby keeping the normally closed passage 504 closed. The valve switch 54 is pressably disposed on the pen housing 10. The inner end of the valve switch 54 passes through the normally closed passage 504 and presses against the valve piston 52, while the outer end of the valve switch 54 protrudes from the pen housing 10. The valve switch 54 forces the valve piston 52 to move, thereby opening the normally closed passage 504. In this embodiment, the control valve 50 is fixed in the mounting cavity 101 and is located in front of the negative pressure pump 40. Furthermore, the valve piston 52 is made of a hard material. The valve spring 53 abuts the bottom of the valve piston 52, and the inner end of the valve switch 54 abuts the center of the top surface of the valve piston 52. A sealing ring 55 is fixed to the edge of the top surface of the valve piston 52 to better seal the normally closed passage 504. Furthermore, the first normally open channel 502 is connected to the writing head 20 via the first transfer tube 56 . The second normally open channel 503 is connected to the input end of the negative pressure pump 40 via the second transfer tube 57 .

[0046] Furthermore, the pen housing 10 houses a rechargeable lithium battery 60, which is electrically connected to the main control board 30. The main control board 30 is provided with a charging port 34, which is exposed on the pen housing 10. This allows for convenient charging of the rechargeable lithium battery 60 without having to remove the battery for recharging. In this embodiment, the rechargeable lithium battery 60 is secured within the battery compartment 102.

[0047] The working principle of this embodiment is described in detail as follows:

[0048] In the original state, the valve piston 52 and the sealing ring 55 cooperate to block the normally closed channel 504. When the pump switch 32 is turned on, the rechargeable lithium battery 60 supplies power to the negative pressure pump 40 through the main control board 30, and the negative pressure pump 40 works to perform the suction pen operation. When the suction pen is working, the control valve 50 is in a two-way state, one end is the pen tip 20 of the suction pen, and the other end is connected to the negative pressure end of the negative pressure pump 40. The suction pen can directly absorb objects without the need to hold down the valve switch 54 by hand. When the object needs to be released, just press the valve switch 54, the sealing ring 55 on the valve piston 52 is separated from the top plane inside the valve body 51, the normally closed channel 504 is opened, and the outside air can enter the cavity 501 through the normally closed channel 504. At this time, the control valve 50 is in a three-way state, the negative pressure of the pen tip 20 disappears quickly, and the object falls off, making the operation of the suction pen easier. After the pump switch 32 in this product is turned on, the negative pressure pump 40 can be kept in working state, which reduces the time required for the negative pressure pump 40 to establish negative pressure during each adsorption, increases the adsorption speed, and improves the working efficiency of the suction pen.

[0049] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A new type of handheld negative pressure suction pen, characterized by: The invention comprises a pen case, a pen head, a main control board, a negative pressure pump and a control valve; the pen head is arranged at the front end of the pen case; the main control board is arranged in the pen case; the negative pressure pump is arranged in the pen case and is electrically connected to the main control board; the control valve is arranged in the pen case, and the control valve comprises a valve body, a valve piston, a valve spring and a valve switch; the valve body has a cavity, and a first normally open channel, a second normally open channel and a normally closed channel are opened on the valve body, the first normally open channel is connected between the cavity and the pen head, and the second normally open channel is connected to the normally closed channel. It is connected between the cavity and the input end of the negative pressure pump, and the normally closed channel is connected between the cavity and the outside world; the valve piston is arranged in the cavity so as to be movable back and forth, and the valve piston moves back and forth to open or close the normally closed channel; the valve spring is arranged in the cavity and prompts the valve piston to move to keep the normally closed channel closed; the valve switch is pressably arranged on the pen housing, the inner end of the valve switch passes through the normally closed channel and presses on the valve piston, and the outer end of the valve switch is exposed outside the pen housing, and the valve switch prompts the valve piston to move to open the normally closed channel.

2. A novel handheld negative pressure suction pen according to claim 1, characterized in that: The valve piston is made of hard material, the valve spring is against the bottom of the valve piston, the inner end of the valve switch is against the center of the top surface of the valve piston, and a sealing ring is fixed on the edge of the top surface of the valve piston.

3. The novel handheld negative pressure suction pen according to claim 1, characterized in that: The first normally open channel is connected to the writing tip through a first transfer tube.

4. The novel handheld negative pressure suction pen according to claim 1, characterized in that: The second normally open channel is connected to the input end of the negative pressure pump through a second transfer tube.

5. The novel handheld negative pressure suction pen according to claim 1, characterized in that: The main control board is provided with a display screen which is exposed from the outer surface of the pen housing.

6. The novel handheld negative pressure suction pen according to claim 1, characterized in that: The main control board is provided with a pump switch and a plurality of buttons, the pump switch and the plurality of buttons are exposed from the outer surface of the pen shell, and the pump switch is a sliding self-locking switch.

7. The novel handheld negative pressure suction pen according to claim 1, characterized in that: A rechargeable lithium battery is arranged in the pen housing, the rechargeable lithium battery is electrically connected to the main control board, and a charging interface is arranged on the main control board, and the charging interface is exposed on the pen housing.

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