An inverted mounting bracket for an electric planer

Abstract

The present invention relates to the technical field of electric planer auxiliary brackets, and particularly relates to an inverted mounting bracket for an electric planer, which is composed of a base plate and a support frame. The base plate is for the installation of the electric planer and is provided with a planing opening for the planing assembly of the electric planer to be exposed. Among them, the support frame of the present invention is hinged to the base plate, and the support frame is composed of an outer body and an inner body that can axially expand and contract relative to each other. Therefore, during use, the support frame can be unfolded for use and can be stored for placement when not in use, so that when the inverted mounting bracket of the present invention is placed, the space occupied is reduced.

Description

Technical Field

[0001] The invention relates to the field of auxiliary brackets for electric planers, and in particular to an inverted bracket for electric planers. Background Art

[0002] An electric planer refers to a tool that uses a planer blade to plan wood. When in use, it generally requires workers to operate it manually. Therefore, it requires extremely high physical strength, operating skills and other qualities of the user. Therefore, in order to facilitate workers to perform planing work more labor-savingly, a bench planer (also known as a bench planer) has been designed. The emergence of a bench planer undoubtedly provides users with greater convenience. However, although the bench planer is more convenient to operate than a hand-held electric planer, its purchase price and the cost of repair and maintenance are also much higher than a hand-held electric planer. Therefore, it is not suitable for the general public. Therefore, the inverted bracket of the electric planer came into being.

[0003] The inverted bracket is an auxiliary bracket that can be used for the installation of a handheld electric planer and enable it to achieve the basic functions of a bench planer. For example, an inverted bracket for an electric planer tool applied by the applicant in 2022 (authorization announcement number CN217597076U) can be used for reference. However, the current inverted bracket is designed mainly to emphasize the stability of the installation of the electric planer, but the other conveniences of the inverted bracket are slightly insufficient. For example, when the inverted bracket is idle, it takes up a lot of space; the height of the inverted bracket cannot be adjusted and is not suitable for users of different heights; a large amount of wood chips generated during the planing process accumulate on the working panel, affecting the planing work and other problems.

[0004] Therefore, it is necessary to improve it. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a flip-up bracket for an electric planer, aiming to solve the problems arising from the above-mentioned background technology.

[0006] The technical solution of the present invention is achieved as follows: a flip-mount bracket for an electric planer, comprising a base plate and a support frame, wherein the base plate is mounted on the electric planer and is provided with a planing opening through which a planing assembly of the electric planer is exposed, and wherein the support frame is hingedly connected to the base plate and comprises an outer body and an inner body capable of relative axial telescopic movement, and a fixed structure is slidably connected to the base plate;

[0007] The fixing structure can fix the support frame on the base plate when the outer body and the inner body are assembled and folded.

[0008] Preferably, the outer body is provided with a fixing frame that can be connected to the substrate, wherein the fixing frame includes:

[0009] The main frame is hinged to the outer body;

[0010] The auxiliary frame body is arranged on the main frame body;

[0011] Wherein, the auxiliary frame body and the substrate are provided with connection holes which are mutually adapted and can be cooperated by fasteners.

[0012] Preferably, the fixing structure includes:

[0013] The fixing body has a first sliding groove and a second sliding groove;

[0014] The limiting body is arranged in the second sliding groove and can be controlled by the first limiting bolt to move in the second sliding groove.

[0015] Preferably, the inner body is provided with a limiting groove on the mating surface with the outer body, and the outer body is provided with a second limiting bolt which can cooperate with the limiting groove.

[0016] By adopting the above technical scheme:

[0017] In the present invention, setting the substrate and the support frame to be hinged to each other can fold the support frame and the substrate when the flip-chip bracket of the present invention is not in use, so as to not occupy too much space when placed;

[0018] Secondly, in order to enable the height of the flip-chip bracket to be adjustable, the present invention sets the support frame to be a telescopic structure that can slide relatively, so as to adjust the height of the support frame, thereby achieving the adjustment of the horizontal height between the substrate and the ground;

[0019] Moreover, the present invention also provides a fixing structure on the substrate, and the fixing structure can fix the support frame and the substrate when the support frame and the substrate are folded, avoiding the two from unfolding randomly, and providing help for the idle flip-chip bracket.

[0020] Preferably, a dust suction body is arranged in the support frame, and a dust suction area which can be communicated with the dust suction body through a pipeline is arranged on the fixing body and / or the limiting body. Wherein, the dust suction body includes:

[0021] A dust suction source;

[0022] A filtering end;

[0023] A sealing structure;

[0024] The discharge channel is arranged through both ends of the inner body;

[0025] Wherein, the dust suction source and the filtering end are arranged on the outer body, and the filtering end can divide the inside of the outer body into an air intake area and an exhaust area;

[0026] The sealing structure is formed at the top end of the inner body and has an outer sealing part and an inner sealing part which can expand or contract. The outer sealing part can fix the inner body after being inflated and expanded, and the discharge channel is closed when the inner sealing part is inflated and expanded.

[0027] Preferably, the sealing structure includes:

[0028] A sealing body is provided at the top end of the inner body and penetrates through the middle from top to bottom;

[0029] An outer mounting groove and an inner mounting groove are respectively provided on the outer circumference and the inner circumference of the sealing body;

[0030] An outer airbag body is provided in the outer mounting groove;

[0031] An inner airbag body is provided in the inner mounting groove;

[0032] An inner material leveling part is provided on the inner airbag body;

[0033] A one-way valve structure is composed of a first one-way valve and a second one-way valve;

[0034] A pressure relief control valve is provided on the inner airbag body;

[0035] Wherein, the first one-way valve is provided on the sealing body and is used to connect the outer airbag body and the inner airbag body; the second one-way valve is provided on the inflation branch path formed in the inner body.

[0036] Preferably, the inner material leveling part includes:

[0037] A material leveling body is provided on the inner airbag body;

[0038] An activity groove is recessed on the end face of the material leveling body away from the inner airbag body;

[0039] An activity part is rotatably connected to the groove wall of the activity groove through a rotating shaft;

[0040] A limiting spring is provided at both ends of the activity groove and is used to limit the two ends of the activity part from moving into the activity groove;

[0041] A driving structure is provided in the activity groove and is used to control any end of the activity part to move away from one side of the activity groove;

[0042] When the inner airbag body expands, each inner material leveling part approaches each other and causes the activity part and / or the material leveling body to fit together and close the discharge channel.

[0043] Preferably, the driving structure includes:

[0044] A driver is provided in the activity groove;

[0045] A driving shaft is controlled to rotate by the driver;

[0046] Wherein, a driving part is formed at the free end of the driving shaft and is arranged at an obtuse angle with the driving shaft.

[0047] Preferably, both the first one-way valve and the second one-way valve include:

[0048] A valve body having a valve cavity with a caliber gradually expanding in the air inlet direction;

[0049] A valve core disposed in the valve cavity through a valve core spring;

[0050] Wherein, when the valve cavity intakes air, the air flow pushes open the valve core and opens the valve cavity.

[0051] By adopting the above technical solution:

[0052] The present invention adds a dust suction function to the flip-chip bracket, that is, the dust suction body can suck impurities such as wood chips discharged from the planer end on the substrate, avoiding the messy distribution of these impurities in the workplace, thereby providing a certain guarantee for the working environment.

[0053] In addition, other advantages of the present invention will be demonstrated in the embodiment part of the present invention, making the friendship effect of the present invention more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0055] Figure 1 Structural schematic diagram of the specific implementation manner of the present invention;

[0056] Figure 2 Schematic diagram of the fixing structure in the specific implementation manner of the present invention;

[0057] Figure 3 For Figure 1 A-A cross-sectional view in

[0058] Figure 4 For Figure 3 Enlarged view of part A in

[0059] Figure 5 Cross-sectional schematic diagram of the fixing structure in the specific implementation manner of the present invention;

[0060] Figure 6 Cross-sectional schematic diagram of the fixing structure schematic diagram in the second specific embodiment of the present invention;

[0061] Figure 7 Cross-sectional schematic diagram of the support frame in the second specific embodiment of the present invention;

[0062] Figure 8 For Figure 7Enlarged view of part B in;

[0063] Figure 9 is Figure 8 Enlarged view of part C in;

[0064] Figure 10 is Figure 8 Sectional view taken along line B - B in. Detailed implementation manner

[0065] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0066] Embodiment 1

[0067] As Figures 1-5 shown, the present invention discloses a reverse-mounted bracket for an electric planer, which is composed of a base plate 10 and a support frame 11. The base plate 10 is used for installing the electric planer and is provided with a planing port 100 for the planing assembly of the electric planer to expose. The support frame 11 is hinged to the base plate 10 and is composed of an outer body 110 and an inner body 111 that can axially expand and contract relative to each other. A fixing structure 2 is slidably connected to the base plate 10;

[0068] Among them, when the outer body and the inner body are combined and folded, the fixing structure 2 can fix the support frame 11 on the base plate 10.

[0069] In this embodiment: Mounting threaded holes are reserved on the base plate 10 for installing the electric planer.

[0070] In this embodiment: A fixing frame capable of connecting to the base plate 10 is provided on the outer body 110. Among them, the fixing frame includes:

[0071] A main frame body 30, hinged to the outer body 110;

[0072] An auxiliary frame body 31, arranged on the main frame body 30;

[0073] Among them, connecting holes that are mutually adapted and can be cooperated by a fastener 32 are provided on the auxiliary frame body 31 and the base plate 10.

[0074] In this embodiment, the connecting holes are threaded holes provided on the auxiliary frame body 31 and the base plate 10, and the two are fixed by a fastener 32 (bolt) passing through the threaded holes of both. The main frame body and the auxiliary frame body of this embodiment are also arranged in a telescopic structure so that the fixing frame can be retracted and placed. Moreover, a fixing bolt 33 is provided on the main frame body. When the fixing bolt 33 is screwed in, it can abut against the auxiliary frame body 31 and limit the movement of the auxiliary frame body 31.

[0075] In this embodiment, the fixing structure 2 includes:

[0076] A fixing body 20 having a first sliding groove 21 and a second sliding groove 22;

[0077] A limiting body 23 is arranged in the second sliding groove 22 and can be controlled to move in the second sliding groove 22 by a first limiting bolt 23a.

[0078] In this embodiment, a sliding rail 2a and a sliding groove 2b that can cooperate with each other are respectively provided on the mating surfaces of the first sliding groove 21 and the base plate 10.

[0079] In this embodiment: A limiting groove is provided on the mating surface of the inner body 111 and the outer body 110, and a second limiting bolt 110a that can cooperate with the limiting groove is provided on the outer body 110.

[0080] Reference Figures 1-5 , the principle of this embodiment is as follows:

[0081] First, the adjustment method of the inner body and the outer body in this embodiment is: When adjusting the inner body, first loosen the second limiting bolt so that the end of the second limiting bolt is separated from the outer wall of the inner body, enabling the inner body to perform telescopic movement with the outer body. After the adjustment is completed, screw in the second limiting bolt so that one end of the second limiting bolt contacts the inner body or a limiting groove provided on the outer wall of the inner body (a groove recessed on the outer wall of the inner body that can accommodate one end of the second limiting bolt), thereby fixing the inner body and completing the adjustment of the inner body and the outer body to achieve the purpose of adjusting the height of the support frame;

[0082] Second, the opening and storage methods of the base plate and the support frame in this embodiment are: Refer to Figure 1 and Figure 3, for the opening method of this embodiment, when opening, the auxiliary frame body of the fixing frame is opened, and the threaded holes provided at one end of the auxiliary frame body (the end far from the main frame body) are aligned with the threaded holes on the substrate, and the two are fixed by fasteners (the fixing bolt can fix the position of the auxiliary frame body, and its usage method is similar to that of the second limit bolt. By turning the fixing bolt, the fixing bolt abuts against or separates from the auxiliary frame body), completing the cooperation of the fixing frame, so that the substrate and the support frame are fixed. After the fixing is completed, the body of the electric planer is installed on the substrate, and the planing assembly (generally refers to the planer blade) of the electric planer is exposed from the planing opening, completing the installation of the electric planer; when storing, first, disassemble the auxiliary frame body from the substrate, and store the auxiliary frame body in the main frame body. Subsequently, slide the inner body into the outer body, and store the outer body so that the outer body is parallel to the substrate. Then slide the fixing body so that the second chute slides in from the edge of the outer body to fix the outer body, so as to achieve the purpose of fixing the support frame and complete the storage work.

[0083] It should be noted that: there are two fixing bodies in this embodiment, and they are respectively arranged on both sides of the substrate and are respectively used to fix different support frames. Taking the fixation of the support frame on the right side as an example, before the support frame on the right side is stored and parallel to the substrate, the fixing body on any side of the substrate can be slid (through the cooperation of the slide rail and the chute) to the left side position of the substrate in advance, so as to avoid affecting the storage of the support frame. After the support frame is stored, slide the fixing body to the right side, align the second chute with the outer body, and complete the storage work when the outer body enters the second chute;

[0084] Furthermore, in order to improve the fixing effect in this embodiment, when the outer body slides into the second chute, by turning the first limit bolt, the limiting body can be made to abut against the outer body, which can improve the fixing effect on the outer body.

[0085] Embodiment 2, the difference from Embodiment 1 is

[0086] As Figures 6-10 shown, in this embodiment: a dust suction body is provided in the support frame 11, and a dust suction area that can be communicated with the dust suction body through a pipeline is provided on the fixing body 20 and / or the limiting body 23. In this embodiment, the dust suction area on the fixing body 20 is a dust suction groove 24 provided on the fixing body. A dust suction port 240 is provided on the inner wall of the dust suction groove 24. The dust suction area on the limiting body 23 is a dust suction cavity 23b provided on the limiting body 23 away from the first limit bolt 23a. The dust suction cavity 23b can be moved by the control of the first limit bolt 23a and aligned with the chip discharge end of the electric planer. When the support frame is stored, the dust suction cavity can also be aligned with the second limit bolt on the outer body through the control of the first limit bolt, that is: the head of the second limit bolt is stuck into the dust suction cavity, so that the storage state of the support frame is more stable.

[0087] Among them, the dust suction body includes:

[0088] A dust suction source, which is an externally connected fan. Generally, a dust inlet 40a and an exhaust port 40b are provided on the outer body 110;

[0089] A filtering end 41, which is a filter bag arranged inside the outer body;

[0090] A sealing structure;

[0091] A discharge channel 42, which is arranged through both ends of the inner body 111;

[0092] Among them, the dust suction source and the filtering end 41 are arranged on the outer body 110 (the filtering end 41 is arranged inside the outer body 110, and the dust suction source is connected to the exhaust port 40b through a pipeline), and the filtering end 41 can divide the inside of the outer body 110 into an intake area 41a and an exhaust area 41b;

[0093] The sealing structure is formed at the top end of the inner body 111 and has an outer sealing part and an inner sealing part that can expand or contract. The outer sealing part can fix the inner body 111 after being inflated and expanded, and the discharge channel 42 is closed when the inner sealing part is inflated and expanded.

[0094] In this embodiment: The sealing structure includes:

[0095] A sealing body 50, which is arranged at the top end of the inner body 111 and has a through hole from top to bottom in the middle;

[0096] An outer installation groove and an inner installation groove, which are respectively arranged on the outer circle and the inner circle of the sealing body 50;

[0097] An outer airbag body 51, which is arranged in the outer installation groove;

[0098] An inner airbag body 52, which is arranged in the inner installation groove;

[0099] An inner material leveling part, which is arranged on the inner airbag body 52;

[0100] A one-way valve structure, which is composed of a first one-way valve 6a and a second one-way valve 6b;

[0101] A pressure relief control valve 53, which is arranged on the inner airbag body 52;

[0102] Among them, the first one-way valve 6a is arranged on the sealing body 50 and is used to connect the outer airbag body 51 and the inner airbag body 52; the second one-way valve 6b is arranged at the input end position of the inflation branch formed on the inner body 111.

[0103] In this embodiment: The inner material leveling part includes:

[0104] A material leveling body 70, which is arranged on the inner airbag body 52;

[0105] The movable groove 71 is recessed on the end surface of the material leveling body 70 away from the inner airbag body 52;

[0106] The movable part 72 is rotatably connected to the groove wall of the movable groove 71 through a rotating shaft 73;

[0107] The limiting spring 74 is arranged at both ends of the movable groove 71 and is used to limit the two ends of the movable part 72 from moving into the movable groove 71;

[0108] The driving structure is arranged in the movable groove 71 and is used to control any end of the movable part 72 to move to the side away from the movable groove 71;

[0109] When the inner airbag body 52 expands, each inner material leveling part approaches each other, causing the movable part 72 and / or the material leveling body 70 to fit together and close the discharge channel 42. In this embodiment, the material leveling bodies 70 fit together and close the discharge channel 42.

[0110] In this embodiment: The driving structure includes:

[0111] The driver 80 is arranged in the movable groove 71;

[0112] The drive shaft is controlled to rotate by the driver 80;

[0113] Wherein, a driving part 82 is formed at the free end of the drive shaft, and the driving part 82 forms an obtuse angle with the drive shaft.

[0114] In this embodiment: Both the first one-way valve 6a and the second one-way valve 6b include:

[0115] The valve body 60 is arranged in the sealing body 50 and has a valve cavity 61 with a gradually expanding diameter from the air inlet direction;

[0116] The valve core 62 is arranged in the valve cavity 61 through a valve core spring 63;

[0117] Wherein, when the valve cavity 61 intakes air, the air flow pushes open the valve core 62 and opens the valve cavity 61.

[0118] Reference Figures 6-10 This embodiment is based on the principle that:

[0119] When the flip chip bracket is used, the dust suction body (filter structure) arranged in the support frame and the external fan can suck most of the generated wood chips into the support frame, avoiding the scattering of wood chips outside and providing a favorable guarantee for the planing working environment;

[0120] More specifically:

[0121] After the electric planer is installed, move the fixed body so that the limiting body corresponds to the chip discharging end of the electric planer, and the dust suction groove of the fixed body corresponds to the planing port. Then, control the limiting body through the first limiting bolt 23 so that the dust suction cavity of the limiting body is close to the chip discharging port of the electric planer. Then, connect an external blower or dust suction pump to the exhaust port to complete the debugging work of the support frame;

[0122] After the debugging of the support frame is completed, start the blower or dust suction pump. The wood chips generated by planing can be sucked through the dust suction port and the dust suction cavity on the dust suction groove. The sucked wood chips are transported through the pipeline to the dust inlet and further sent into the air inlet area. The wood chips are filtered by the filter bag and concentrated in the air inlet area, while the filtered gas is discharged through the exhaust port, thus realizing dust suction.

[0123] In this embodiment, the sealing structure provided on the inner body can perform the functions of closing or opening the discharge channel and cleaning the filter bag, as follows:

[0124] During the dust suction process, the discharge channel can be closed by the sealing structure. It can inflate the outer air bag body and the inner air bag body through the inflation branch where the second one-way valve is located. When the outer air bag body expands, it will contact the inner wall of the outer body, thereby improving the sealing effect between the inner body and the outer body. At the same time, it can also assist in fixing the inner body. After the outer air bag body expands, the inner air bag is inflated and expanded, and the material leveling bodies approach each other (refer to Figures 8-10 ), thereby closing the discharge channel. After the dust suction work is completed and the wood chips in the air inlet area need to be discharged, the inner air bag body and the outer air bag body can be exhausted by opening the second one-way valve and / or the pressure relief control valve, thereby completing the opening of the discharge channel and enabling the discharge work;

[0125] When cleaning the filter bag, the inner body can be moved and partially retracted into the outer body. Then, by inflating the outer air bag body and the inner air bag body, the material leveling bodies approach each other and clamp any position of the filter screen. Then, start the drive shaft through the driver, and use the drive end on the drive shaft to control both ends of the movable part to rotate around the rotating shaft. During the movement of the movable part, the clamped filter screen is driven to twist and swing, and the shaken and shaken wood chips are discharged from the discharge channel, thereby completing the cleaning of the filter screen.

[0126] It should be noted that during the process of twisting and swinging the filter screen, inflation can be continuously carried out through the inflation branch and the pressure relief control valve can be opened for exhaust. The gas discharged by the pressure relief control valve is blown towards the filter screen to assist in cleaning the filter screen.

[0127] In summary, the support frame structure of this embodiment can not only support the substrate and adjust its height, but also perform dust suction. Moreover, the provided sealing structure can not only improve the sealing effect between the inner body and the outer body, but also clean the filter bag without disassembling it, thereby reducing the frequency of cleaning by disassembling the filter screen and improving the convenience of cleaning.

[0128] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An inverted mounting bracket for a planer, which is composed of a base plate (10) and a support frame (11). The base plate (10) is used for mounting the planer and is provided with a planing opening (100) for the planing assembly of the planer to be exposed. It is characterized in that: The support frame (11) is hinged to the substrate (10) and consists of an outer body (110) and an inner body (111) that can axially expand and contract relative to each other. A fixing structure (2) is slidably connected to the substrate (10); Among them, when the outer body (110) and the inner body (111) are joined and folded, the fixing structure (2) can fix the support frame (11) to the substrate (10); The fixing structure (2) includes: A fixing body (20) having a first chute (21) and a second chute (22); A limiting body (23) disposed in the second chute (22) and capable of being controlled to move in the second chute (22) by a first limiting bolt (23a); A dust suction body is provided in the support frame (11), and a dust suction area capable of being communicated with the dust suction body through a pipeline is provided on the fixing body (20) and / or the limiting body (23). Among them, the dust suction body includes: A dust suction source; A filtering end (41); A sealing structure; A discharge channel (42) penetrating through both ends of the inner body (111); Among them, the dust suction source and the filtering end (41) are disposed on the outer body (110), and the filtering end (41) can divide the inside of the outer body (110) into an air inlet area (41a) and an air exhaust area (41b); The sealing structure is formed at the top of the inner body (111) and has an outer sealing portion and an inner sealing portion that can expand or contract. The outer sealing portion can fix the inner body (111) after being inflated, and when the inner sealing portion is inflated, it closes the discharge channel (42); The sealing structure includes: A sealing body (50) disposed at the top of the inner body (111) and penetrating through the middle from top to bottom; An outer installation groove and an inner installation groove are respectively disposed on the outer circle and the inner circle of the sealing body (50); An outer airbag body (51) disposed in the outer installation groove; An inner airbag body (52) disposed in the inner installation groove; An inner material leveling portion disposed on the inner airbag body (52); A one-way valve structure composed of a first one-way valve (6a) and a second one-way valve (6b); A pressure relief control valve (53) disposed on the inner airbag body (52); Among them, the first one-way valve (6a) is disposed on the sealing body (50) and is used to communicate the outer airbag body (51) and the inner airbag body (52); the second one-way valve (6b) is disposed on the inflation branch path formed on the inner body (111); When the inner airbag body (52) expands, the inner material leveling portions approach each other and close the discharge channel (42).

2. The inverted mounting bracket for an electric planer according to claim 1, characterized in that: A fixing frame capable of connecting with the substrate (10) is provided on the outer body (110). Among them, the fixing frame includes: A main frame body (30) hinged to the outer body (110); An auxiliary frame body (31) disposed on the main frame body (30); Among them, the auxiliary frame body (31) and the substrate (10) are provided with connection holes that are mutually adapted and can be cooperated by fasteners (32).

3. The inverted mounting bracket for an electric planer according to claim 1 or 2, characterized in that: The inner body (111) is provided with a limiting groove on the mating surface with the outer body (110), and a second limiting bolt (110a) capable of cooperating with the limiting groove is provided on the outer body (110).

4. The inverted mounting bracket for an electric planer according to claim 1, characterized in that: The inner material leveling portion includes: A material leveling body (70) disposed on the inner airbag body (52); The movable groove (71) is recessed on the end face of the material leveling body (70) away from the inner airbag body (52); The movable part (72) is rotatably connected to the groove wall of the movable groove (71) through a rotating shaft (73); The limiting springs (74) are arranged at both ends of the movable groove (71) and are used to limit the two ends of the movable part (72) from moving into the movable groove (71); The driving structure is arranged in the movable groove (71) and is used to control any end of the movable part (72) to move to the side away from the movable groove (71); When the inner airbag body (52) expands, the inner material leveling parts approach each other, causing the movable part (72) and / or the material leveling body (70) to fit together and close the discharge channel (42).

5. The inverted mounting bracket for an electric planer according to claim 4, characterized in that: The driving structure includes: The driver (80) is arranged in the movable groove (71); The driving shaft is controlled to rotate by the driver (80); Wherein, a driving part (82) which forms an obtuse angle with the driving shaft is formed at the free end of the driving shaft.

6. The inverted mounting bracket for an electric planer according to claim 1 or 4, characterized in that: Both the first one-way valve (6a) and the second one-way valve (6b) include: The valve body (60) has a valve cavity (61) with a diameter gradually expanding in the air inlet direction; The valve core (62) is arranged in the valve cavity (61) through a valve core spring (63); Wherein, when the valve cavity (61) intakes air, the air flow pushes open the valve core (62) and opens the valve cavity (61).

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