Toggle button assembly and air outlet structure

Abstract

The utility model provides a toggle button assembly and an air outlet structure, the toggle button assembly comprises a blade mechanism, a toggle button mechanism and a connecting mechanism, and the blade mechanism is provided with a through mounting cavity; the toggle mechanism is provided with an insertion module inserted into the mounting cavity and a driving module located outside the mounting cavity, and the insertion module is provided with an extending end extending out of the mounting cavity; the connecting mechanism is connected with the extending end of the inserting module, the connecting mechanism and the driving module are located on the two opposite sides of the blade mechanism respectively, and the connecting mechanism is connected with the rear row of blades. The utility model provides a shifting button assembly and an air outlet structure, and aims to solve the problems that in the prior art, a shifting button is sleeved outside a blade with larger thickness, so that the thickness of the shifting button and the blade is large, the occupied space of an air outlet is increased, and the appearance is heavy.

Description

Technical Field

[0001] The utility model belongs to the technical field of air outlet structures of air conditioners, and more specifically, relates to a dial button component and an air outlet structure. Background Art

[0002] With the overall development of the automobile industry, the design trend of automobile air-conditioning vents has undergone tremendous changes. Most air outlet assemblies include a front blade group and a rear blade group; the front blade group is swung up and down by toggling the knob assembly up and down; the knob assembly slides horizontally, driving the rear blades to swing. The number of front blades is relatively large, generally around 3-6, or even more, so the size of the air outlet in the up and down direction will be larger, occupying more space on the dashboard. In recent years, air outlets have increasingly tended to be designed in a simpler style, and traditional barrel-shaped air outlets and multi-blade air outlets have gradually been replaced by simpler single-blade air outlets and hidden air outlets.

[0003] Compared with traditional air outlets, single-blade air outlets are small in size and simple in structure, which facilitates the spatial arrangement of surrounding parts. However, single-blade air outlets also have certain problems. Since this form only has a single blade, the size of the air outlet in the up and down direction is reduced, but in order to ensure the air output, the size in the left and right direction will be increased, so that the length of the single blade in the left and right direction increases. In order to ensure the strength of the single blade and reduce the probability of deformation or breakage, the thickness of the single blade needs to be increased. The existing dial button is usually integrally mounted on the outside of the blade. Although this installation method is firmly connected, for single blades with larger thickness, mounting the dial button on the outside of the single blade will further increase the overall thickness, which will not only increase the size of the air outlet, but also make the appearance very bulky, affecting the overall aesthetics of the interior decoration of the vehicle. Utility Model Content

[0004] The utility model aims to provide a dial button assembly and an air outlet structure, aiming to solve the problem in the prior art that a dial button is mounted on a thick blade, resulting in a thick dial button and blade, increased air outlet space, and a bulky appearance.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a dial button assembly is provided, comprising:

[0007] The blade mechanism is provided with a through installation cavity;

[0008] a toggle mechanism, comprising an insertion module inserted into the mounting cavity and a driving module located outside the mounting cavity, wherein the insertion module has an extension end extending out of the mounting cavity; and

[0009] A connecting mechanism is connected to the extended end of the insertion module, the connecting mechanism and the driving module are respectively located on two opposite sides of the blade mechanism, and the connecting mechanism is connected to the rear row of blades.

[0010] In combination with the first aspect, in a possible implementation manner, the blade mechanism includes:

[0011] The adjusting blade has a receiving cavity formed along the front-rear direction; and

[0012] The blade nest is inserted in the accommodating cavity, and the mounting cavity is opened in the blade nest.

[0013] In combination with the first aspect, in a possible implementation, the blade nest is clearance-matched with the accommodating cavity, and a limiting convex strip is provided on an outer surface of the blade nest, and the limiting convex strip abuts against the adjusting blade.

[0014] In combination with the first aspect, in a possible implementation manner, the dial button mechanism includes:

[0015] a connecting member, comprising a fixing portion and a connecting portion inserted into the installation cavity, the connecting portion forming the insertion module; and

[0016] A driving member is connected to the fixing portion, and the driving member forms the driving module.

[0017] In combination with the first aspect, in a possible implementation manner, the driving member includes:

[0018] A driving block is provided with a fixing groove, wherein the fixing portion is inserted into the fixing groove; and

[0019] A locking piece is connected to the connecting portion.

[0020] In combination with the first aspect, in a possible implementation, the connecting part is provided with an installation groove, the locking piece is inserted into the installation groove, the locking piece has a first locking block, the connecting part has a second locking block corresponding to the first locking block, the button mechanism also includes a locking spring piece clamped in the first locking block and the second locking block, the locking spring piece connects the connecting part and the locking piece, the locking spring piece is located in the installation cavity, and abuts against the blade mechanism.

[0021] In combination with the first aspect, in a possible implementation manner, the connection mechanism includes:

[0022] A connecting seat connected to the protruding end of the insertion module; and

[0023] A toggle member is connected to the connecting seat and is rotatable around a first axis, wherein the first axis is parallel to the long axis of the blade mechanism, and the toggle member is connected to the rear row of blades.

[0024] In combination with the first aspect, in a possible implementation manner, the connection seat is provided with a latch hole, and the protruding end of the insertion module is inserted into the latch hole.

[0025] In combination with the first aspect, in a possible implementation, the connecting socket includes:

[0026] a connecting plate connected to the extended end of the insertion module; and

[0027] A support ear is arranged on the connecting plate, and the toggle member is rotatably connected to the support ear.

[0028] The beneficial effect of the dial button assembly provided by the utility model is that: compared with the prior art, the dial button assembly of the utility model opens a mounting cavity on the blade mechanism, and the dial button mechanism is inserted into the mounting cavity to achieve connection with the blade mechanism, and the dial button mechanism does not need to be nested outside the blade mechanism, which not only makes the dial button assembly after connection not exposed to the connection part outside the blade mechanism, but also makes it lighter and thinner, does not occupy too much space of the air outlet, and the appearance of the dial button assembly is neater. In addition, since the insertion module is inserted into the mounting cavity, the strength of the blade mechanism and the dial button mechanism will not be reduced due to the opening of the mounting cavity after being connected, which ensures the anti-deformation ability of the blade mechanism.

[0029] In the second aspect, an embodiment of the utility model further provides an air outlet structure, including a button assembly as described in any one of the above items, and also including a rear row of blades connected to the button assembly, and a mounting shell mounted on the outside of the button assembly and the rear row of blades.

[0030] The beneficial effect of the air outlet structure provided by the utility model is that it has similar technical effects to the above-mentioned dial button assembly and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 An exploded view of a dial button assembly provided in an embodiment of the utility model;

[0033] Figure 2 A structural schematic diagram of a dial button assembly provided in an embodiment of the utility model;

[0034] Figure 3 It is a structural schematic diagram of the dial mechanism and the connecting mechanism used in the embodiment of the utility model;

[0035] Figure 4 A partial cross-sectional view of the blade mechanism used in the embodiment of the utility model;

[0036] Figure 5 A cross-sectional view of the button mechanism and the blade nesting used in the embodiment of the utility model;

[0037] Figure 6 A schematic diagram of the internal structure of the air outlet structure provided by an embodiment of the utility model;

[0038] Figure 7 A schematic structural diagram of an air outlet structure provided in an embodiment of the utility model.

[0039] In the figure: 1. button mechanism; 101. driving member; 1011. driving block; 1012. locking piece; 1013. first locking block; 102. connecting member; 1021. fixing portion; 1022. connecting portion; 1023. second locking block; 1024. mounting groove; 103. locking spring; 2. blade mechanism; 201. blade nesting; 2011. mounting cavity; 2012. limiting convex strip; 202. adjusting blade; 2021. accommodating cavity; 3. connecting mechanism; 301. connecting seat; 3011. connecting plate; 3012. supporting ear; 302. toggle member; 4. fixing seat; 5. rear blade; 6. mounting shell. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the terms "first", "second" or "third" are used to distinguish different objects, rather than to describe a specific order. The directional terms "upper" and "lower" in the claims, specification and drawings of the present utility model are the same as the up and down direction of the vehicle body, the terms "left" and "right" are the same as the left and right direction of the vehicle body, the terms "front" and "rear" are the same as the front and rear direction of the vehicle body, and the term "inside" is the side adjacent to the passenger compartment in the left and right direction of the vehicle body, and vice versa. "outside". Unless otherwise specified, other directional words, such as "vertical", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so it cannot be understood as limiting the specific protection scope of the present utility model. In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements. In the claims, specification and the above drawings of the present utility model, if the terms "including", "having" and their variations are used, it is intended to mean "including but not limited to".

[0042] It should be noted that the blade module forms the front blades, that is, the blade structure that swings up and down. The rear blades refer to the blade structure that swings left and right and is located on the side of the front blades away from the air outlet.

[0043] Please also read Figures 1 to 5 Now, the dial button assembly and the air outlet structure provided by the utility model are described. The dial button assembly includes a blade mechanism 2, a dial button mechanism 1 and a connecting mechanism 3. The blade mechanism 2 is provided with a through installation cavity 2011; the dial button mechanism 1 has an insertion module inserted in the installation cavity 2011 and a driving module located outside the installation cavity 2011, and the insertion module has an extended end extending out of the installation cavity 2011; the connecting mechanism 3 is connected to the extended end of the insertion module, the connecting mechanism 3 and the driving module are respectively located on opposite sides of the blade mechanism 2, and the connecting mechanism 3 is connected to the rear row of blades 5.

[0044] Compared with the prior art, the dial button assembly provided by the utility model has an installation cavity 2011 on the blade mechanism 2, and the dial button mechanism 1 is inserted into the installation cavity 2011 to achieve connection with the blade mechanism 2, and the dial button mechanism 1 does not need to be nested outside the blade mechanism 2, so that the dial button assembly after connection does not have a connection portion 1022 exposed to the outside of the blade mechanism 2, which is more light and thin, does not occupy too much space of the air outlet, and the appearance of the dial button assembly is neater. In addition, since the insertion module is inserted into the installation cavity 2011, the strength of the blade mechanism 2 will not be reduced due to the installation cavity 2011 after being connected to the dial button mechanism 1, thereby ensuring the anti-deformation ability of the blade mechanism 2.

[0045] It should be noted that the opening direction of the installation cavity is parallel to the flow direction of the airflow out of the air outlet, that is, the insertion direction of the plug-in module is parallel to the direction of the airflow out of the air outlet.

[0046] It should be noted that the blade mechanism 2 is rotatably connected to the air outlet through a rotating shaft, and the blade mechanism 2 can slide along the axial direction of the rotating shaft. The insertion module of the dial mechanism is inserted into the installation cavity 2011, and the drive module is located in the installation cavity 2011 and at the air outlet end of the air outlet. The connecting mechanism 3 is located on the side of the blade mechanism 2 away from the air outlet, and is connected to the protruding end of the insertion module, and the connecting structure 3 is also rotatably connected to the rear row of blades 5. The axis of rotation of the blade mechanism 2 is at an angle to the axis of rotation of the rear row of blades 5. The operator controls the drive module to swing up and down, thereby realizing the rotation of the blade mechanism 2 and adjusting the up and down wind direction of the airflow. When the operator controls the drive module to swing left and right, the blade mechanism 2 slides left and right along the rotating shaft, does not change the wind direction of the airflow in the up and down direction, but the connecting mechanism connected to the protruding end of the insertion module swings left and right, thereby controlling the rear row of blades 5 to rotate left and right, so as to achieve the wind direction adjustment of the airflow in the left and right direction. The above description is only a specific use of the button assembly in the present application. How the button assembly can adjust the airflow in two directions is the prior art. The button assembly can also be connected to the air outlet by other methods in the prior art to adjust the direction of the airflow.

[0047] In some embodiments, see Figure 2 The blade mechanism 2 includes an adjusting blade 202 and a blade nest 201 . The adjusting blade 202 is provided with a receiving cavity 2021 along the front-rear direction. The blade nest 201 is inserted into the receiving cavity 2021 , and the installation cavity 2011 is provided in the blade nest 201 .

[0048] Both the adjusting blade 202 and the blade nest 201 can be processed and formed by injection molding, which can achieve batch production and low production cost. In this embodiment, the adjusting blade 202 is plugged and matched with the blade nest 201, which not only ensures the strength of the blade mechanism 2 and is easy to install, but also corresponds to the solution of setting the blade mechanism 2 as an integrated body, which is more convenient to process and easy to demold during injection molding. In addition, if the adjusting blade 202 or the blade nest 201 is damaged during use, it can be replaced separately, reducing the subsequent maintenance and replacement costs.

[0049] In some embodiments, see Figure 2 and Figure 4 The blade nest 201 is clearance-matched with the accommodating cavity 2021 , and a limiting convex strip 2012 is provided on the outer surface of the blade nest 201 , and the limiting convex strip 2012 abuts against the adjusting blade 202 .

[0050] If the blade nest 201 and the accommodating cavity 2021 are interference-fitted, the large contact area will make installation or removal very laborious. In this embodiment, the blade nest 201 and the accommodating cavity 2021 are clearance-fitted, which is convenient for installation, and the limiting convex strip 2012 is provided to abut against the adjusting blade 202 to prevent the blade nest 201 and the adjusting blade 202 from separating, thereby improving the firmness of the connection.

[0051] Optionally, the limiting ridge 2012 extends along the insertion direction of the blade nest 201 to reduce friction resistance during installation.

[0052] Optionally, a plurality of limiting ridges 2012 are provided, and the plurality of limiting ridges 2012 are distributed at intervals.

[0053] In some embodiments, see Figures 2 to 3 The button mechanism 1 includes a connecting member 102 and a driving member 101. The connecting member 102 includes a fixing portion 1021 and a connecting portion 1022 inserted into the installation cavity 2011, and the connecting portion 1022 forms an insertion module; the driving member 101 is connected to the fixing portion 1021, and the driving member 101 forms a driving module.

[0054] Now connect the fixing part 1021 with the driving member 101, and then insert the connecting part 1022 into the installation cavity 2011, and the fixing part 1021 and the driving member 101 are located outside the installation cavity 2011. The passenger controls the connecting part 102 by manipulating the driving member 101, and then controls the movement of the blade mechanism 2. During the installation process, the driving member 101 needs to be connected to the connecting mechanism 3, and the connecting part 102 needs to be connected to other components in the vehicle body for fixation, so the dial mechanism 1 is set as a split structure for easy processing.

[0055] Specifically, the end of the connecting member 102 is connected to the fixing seat 4, and the fixing seat 4 is inserted into the mounting shell 6 to fix the dial button assembly.

[0056] In some embodiments, see Figures 2 to 5 The driving member 101 includes a driving block 1011 and a locking piece 1012 . The driving block 1011 is provided with a fixing groove, and the fixing portion 1021 is inserted into the fixing groove; the locking piece 1012 is connected to the connecting portion 1022 .

[0057] The driver 101 and the connector 102 are fixed by plugging, and there is no need to use an external connector 1022, which simplifies the connection structure. In addition, since the fixing part 1021 is inserted into the fixing groove of the driver block 1011, there is no external connector 1022 and structure exposed to the outside, making the overall appearance more concise and beautiful. The locking piece 1012 is connected to the connector 1022, and then the whole is inserted into the installation cavity 2011, which will not be exposed to the outside, and the contact area between the driver 101 and the connector 102 is increased, thereby increasing the firmness of the connection.

[0058] In some embodiments, see Figures 2 to 3 The connecting portion 1022 is provided with an installation groove 1024, the locking piece 1012 is inserted into the installation groove 1024, the locking piece 1012 has a first locking block 1013, the connecting portion 1022 has a second locking block 1023 corresponding to the first locking block 1013, the button mechanism 1 also includes a locking spring piece 103 clamped in the first locking block 1013 and the second locking block 1023, the locking spring piece 103 connects the connecting portion 1022 and the locking piece 1012, the locking spring piece 103 is located in the installation cavity 2011, and abuts against the blade mechanism 2.

[0059] The locking piece 1012 is inserted into the installation groove 1024 to prevent the locking piece 1012 from protruding from the connecting portion 1022, and no resistance is generated when the locking piece 1012 is subsequently inserted into the installation cavity 2011. The connecting portion 1022 and the locking piece 1012 are fixed by engaging the locking spring piece 103 with the first locking block 1013 and the second locking block 1023, and the installation is more concise. Moreover, the locking spring piece 103 abuts against the blade mechanism 2, and when the driving member 101 is controlled, a damping feeling is generated between the locking spring piece 103 and the blade mechanism 2, so that the gear adjustment is realized.

[0060] Optionally, the locking piece 1012 is provided with a first connecting groove, the connecting portion 1022 is provided with a second connecting groove connected to the first connecting groove, the first locking block 1013 is disposed in the first connecting groove, and the second locking block 1023 is disposed in the second connecting groove.

[0061] In some embodiments, see Figure 6The connecting mechanism 3 includes a connecting seat 301 and a toggle member 302, the connecting seat 301 is connected to the protruding end of the insertion module; the toggle member 302 is connected to the connecting seat 301 and rotates around a first axis, the first axis is parallel to the long axis of the blade mechanism 2, and the toggle member 302 is connected to the rear row of blades 5.

[0062] The connection seat 301 is connected to the extended end of the insertion module, and the blade mechanism 2 is locked between the connection seat 301 and the driving module to form the entire structure, which is convenient for fixing the dial assembly in the car. The toggle member 302 is connected to the rear blade 5. Since the toggle assembly is connected to the connection seat 301 by rotating around the first axis, when the driving module moves up and down, the blade mechanism 2 swings up and down, and the connection seat 301 rotates around the first axis, but the toggle member 302 and the rear blade 5 do not move. When the driving module moves left and right, the connection seat 301 drives the toggle member 302 to move left and right, so that the rear blade 5 swings left and right.

[0063] Optionally, the extended end of the insertion module is plugged or screwed to the connection seat 301, or can be bonded.

[0064] In some embodiments, see Figure 3 The connecting seat 301 is provided with a card hole, and the extended end of the insertion module is inserted into the card hole.

[0065] The extended end of the plug-in module has a buckle, which is inserted into the buckle hole to lock the connection base 301 and the plug-in module. This embodiment does not require an external connection part 1022 to achieve the connection base 301 and the plug-in module. It is not affected by temperature and humidity and has a firm connection.

[0066] In some embodiments, see Figure 3 The connection seat 301 includes a connection plate 3011 and a support ear 3012 , the connection plate 3011 is connected to the extended end of the insertion module; the support ear 3012 is arranged on the connection plate 3011 , and the toggle member 302 is rotatably connected to the support ear 3012 .

[0067] The toggle member 302 is rotatably connected to the lug 3012 to avoid interference between the connecting base 301 and the toggle member 302 when the connecting base 301 swings up and down. The connecting base 301 in this embodiment has a simple structure and can simultaneously connect with the insertion module and the toggle member 302 to avoid mutual interference.

[0068] Optionally, the connecting plate 3011 is snap-fitted to the protruding end of the insertion module.

[0069] Optionally, a card hole is opened on the connecting plate 3011.

[0070] Based on the same inventive concept, the utility model also provides an air outlet structure. Figure 6 to Figure 7The air outlet structure includes any one of the above-mentioned dial button components, and also includes a rear row of blades 5 connected to the dial button component, and a mounting shell 6 sleeved on the outside of the dial button component and the rear row of blades 5.

[0071] The air outlet structure provided by the utility model adopts the above-mentioned dial button assembly, and a mounting cavity 2011 is provided on the blade mechanism 2, and the dial button mechanism 1 is inserted into the mounting cavity 2011 to realize the connection with the blade mechanism 2, and the dial button mechanism 1 does not need to be nested outside the blade mechanism 2, so that the dial button assembly after connection does not have a connecting portion 1022 exposed to the outside of the blade mechanism 2, and is more light and thin, does not occupy too much space of the air outlet, and the appearance of the dial button assembly is neater. In addition, because the insertion module is inserted into the mounting cavity 2011, the strength of the blade mechanism 2 will not be reduced due to the opening of the mounting cavity 2011 after being connected to the dial button mechanism 1, and the anti-deformation ability of the blade mechanism 2 is ensured.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dial button assembly, characterized in that: include: The blade mechanism (2) is provided with a through installation cavity (2011); A toggle mechanism (1) comprises an insertion module inserted into the installation cavity (2011) and a drive module located outside the installation cavity (2011), wherein the insertion module has an extension end extending out of the installation cavity (2011); as well as The connecting mechanism (3) is connected to the protruding end of the insertion module. The connecting mechanism (3) and the driving module are respectively located on opposite sides of the blade mechanism (2). The connecting mechanism (3) is connected to the rear row of blades (5).

2. The dial assembly according to claim 1, characterized in that: The blade mechanism (2) comprises: The regulating blade (202) is provided with a receiving cavity (2021) along the front-rear direction; and The blade nest (201) is inserted into the accommodating cavity (2021), and the installation cavity (2011) is opened in the blade nest (201).

3. The dial assembly according to claim 2, characterized in that: The blade nest (201) is loosely matched with the accommodating cavity (2021); a limiting convex strip (2012) is provided on the outer surface of the blade nest (201); and the limiting convex strip (2012) abuts against the regulating blade (202).

4. The dial assembly according to claim 1, characterized in that: The dial mechanism (1) comprises: A connecting member (102), comprising a fixing portion (1021) and a connecting portion (1022) inserted into the installation cavity (2011), wherein the connecting portion (1022) forms the insertion module; and A driving member (101) is connected to the fixing portion (1021), and the driving member (101) forms the driving module.

5. The dial assembly according to claim 4, characterized in that: The driving member (101) comprises: The driving block (1011) is provided with a fixing groove, and the fixing portion (1021) is inserted into the fixing groove; and The locking piece (1012) is connected to the connecting portion (1022).

6. The dial assembly according to claim 5, characterized in that: The connecting portion (1022) is provided with a mounting groove (1024), the locking piece (1012) is inserted into the mounting groove (1024), the locking piece (1012) has a first locking block (1013), the connecting portion (1022) has a second locking block (1023) corresponding to the first locking block (1013), the dial button mechanism (1) also includes a locking spring piece (103) clamped in the first locking block (1013) and the second locking block (1023), the locking spring piece (103) connects the connecting portion (1022) and the locking piece (1012), the locking spring piece (103) is located in the mounting cavity (2011), and abuts against the blade mechanism (2).

7. The dial assembly according to claim 1, characterized in that: The connecting mechanism (3) comprises: A connecting seat (301) connected to the protruding end of the insertion module; and A toggle member (302) is connected to the connecting seat (301) and is rotatable around a first axis, wherein the first axis is parallel to the long axis of the blade mechanism (2), and the toggle member (302) is connected to the rear row of blades (5).

8. The dial assembly according to claim 7, characterized in that: The connection seat (301) is provided with a latch hole, and the extended end of the insertion module is inserted into the latch hole.

9. The dial assembly according to claim 7, characterized in that: The connecting seat (301) comprises: A connecting plate (3011) connected to the protruding end of the insertion module; and A support ear (3012) is provided on the connecting plate (3011), and the shifting member (302) is rotatably connected to the support ear (3012).

10. The air outlet structure is characterized in that: A dial button assembly according to any one of claims 1 to 9, further comprising a rear row of blades (5) connected to the dial button assembly, and a mounting shell (6) sleeved on the outside of the dial button assembly and the rear row of blades (5).

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