Instrument board metal installation support convenient to install

By designing a clamp and positioning rod adjustment structure suitable for the metal mounting bracket of the instrument panel, the problem of model adaptability and cumbersome operation in the existing technology is solved, and the rapid positioning and fixing of the instrument panel is achieved, and the installation process is simplified.

CN223290661UActive Publication Date: 2025-09-02SUZHOU JIANTONG HARDWARE MASCH CO LTD
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Patent Information

Application Number
CN202422647834.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-09-02
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

The existing dashboard metal mounting bracket cannot adapt to different models of dashboards, and the installation process requires the collaboration of multiple staff members, which is cumbersome to operate.

Method used

A metal installation bracket for easy installation of the instrument panel is designed, using four sets of clamps and four sets of positioning rods. The synchronous adjustment of the clamps and positioning rods is achieved through the motor-driven bidirectional screw and bidirectional screw. It is used to adjust the height and angle of the base and fixing frame to adapt to the fixed installation of different models of instrument panels.

Benefits of technology

It realizes rapid positioning and fixing of the instrument panel, simplifies the installation process, is suitable for different models of instrument panels, reduces manpower demand and improves installation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an instrument board metal installation support convenient to install, which comprises a base, a fixing frame is arranged on the base, an installation frame is arranged above the fixing frame, four groups of clamping blocks which are symmetrically distributed are arranged in the installation frame, four groups of positioning rods which are symmetrically distributed are arranged in the installation frame, and the clamping blocks and the positioning rods are arranged on the base. The mounting frame is internally provided with two groups of first adjusting rods and second adjusting rods which are symmetrically distributed, the two groups of first adjusting rods and second adjusting rods are slidably connected with the mounting frame, the two adjacent groups of first adjusting rods and second adjusting rods are vertically distributed, and the mounting frame is internally provided with two groups of first clamping rods and second clamping rods which are symmetrically distributed; according to the instrument panel fixing device, the instrument panel can be rapidly positioned and installed through the four clamping blocks and the four positioning rods, the installation process is convenient and rapid, the distance between the four clamping blocks and the four positioning rods can be freely adjusted, the instrument panel fixing device is suitable for fixed installation of instrument panels of different models, and workers can conveniently assemble various instrument assembling parts on the instrument panel.
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Description

Technical Field

[0001] The utility model relates to the technical field of mounting brackets, in particular to a metal mounting bracket for an instrument panel which is easy to install. Background Art

[0002] With the progress of society, economic development and the improvement of people's living standards, passenger cars such as sedans have become increasingly popular and have entered more and more families. They have gradually become a means of transportation, bringing convenience to people's travel. With the popularization of cars in people's lives, the comfort, safety and differentiation of cars have received more and more attention. Among them, the auxiliary instrument panel is one of the key items of concern to consumers.

[0003] The installation of the instrument panel requires the use of a metal mounting bracket to fix it and then install various instrument assembly components on the instrument panel. After the assembly is completed, the instrument assembly is uniformly fixed and installed in the car. The metal mounting bracket used for fixing the instrument panel in the existing technology has a fixed structure and cannot be used to install instrument panels of different models. In addition, due to the large size of the instrument panel itself, the existing metal mounting brackets require multiple workers to cooperate in the installation process of the instrument panel, and the installation of the instrument panel is carried out step by step, which is cumbersome. Utility Model Content

[0004] The purpose of the present invention is to provide a metal mounting bracket for an instrument panel that is easy to install, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a dashboard metal mounting bracket that is easy to install, comprising a base, a fixing bracket being provided on the base, a mounting bracket being provided above the fixing bracket, four groups of symmetrically distributed clamping blocks being provided in the mounting bracket, four groups of symmetrically distributed positioning rods being provided in the mounting bracket, two groups of symmetrically distributed first adjusting rods and second adjusting rods being provided in the mounting bracket, the two groups of first adjusting rods and second adjusting rods being both slidably connected to the mounting bracket, and the two adjacent groups of first adjusting rods and second adjusting rods being distributed perpendicularly, the mounting bracket being provided with two groups of symmetrically distributed first bidirectional screw rods and second bidirectional screw rods, the mounting bracket being provided with two groups of symmetrically distributed first clamping rods and second clamping rods, the two groups of first clamping rods and second clamping rods being both slidably connected to the mounting bracket, and the two adjacent groups of first clamping rods and second clamping rods being distributed perpendicularly, the mounting bracket being provided with two groups of symmetrically distributed first bidirectional screw rods and second bidirectional screw rods, the clamping blocks being slidably connected to the two adjacent groups of first adjusting rods and second adjusting rods respectively, and the positioning rods being slidably connected to the two adjacent groups of first clamping rods and second clamping rods respectively.

[0006] As a further preferred embodiment of the present technical solution, the two ends of the two groups of the first bidirectional screw rods respectively pass through the mounting frame and are rotatably connected to the mounting frame through bearings, the first bidirectional screw rods respectively pass through the two groups of first adjusting rods and are threadedly connected to the two groups of first adjusting rods, the two ends of the two groups of the second bidirectional screw rods respectively pass through the mounting frame and are rotatably connected to the mounting frame through bearings, the second bidirectional screw rods respectively pass through the two groups of second adjusting rods and are threadedly connected to the two groups of second adjusting rods.

[0007] As a further preferred embodiment of the present technical solution, the two groups of the first bidirectional screw rods and the second bidirectional screw rods are both sleeved with first synchronous wheels, and two groups of vertically distributed first synchronous belts are provided in the mounting frame, and the first synchronous belts are respectively connected to the two corresponding groups of first synchronous wheels for transmission.

[0008] As a further preferred embodiment of the present technical solution, the two ends of the two groups of the first bidirectional screws respectively pass through the mounting frame and are rotatably connected to the mounting frame through bearings, the first bidirectional screws respectively pass through the two groups of the first clamping rods and are respectively threadedly connected to the two groups of the first clamping rods, the two ends of the two groups of the second bidirectional screws respectively pass through the mounting frame and are rotatably connected to the mounting frame through bearings, the second bidirectional screws respectively pass through the two groups of the second clamping rods and are respectively threadedly connected to the two groups of the second clamping rods.

[0009] As a further preferred embodiment of the present technical solution, the two groups of the first bidirectional screws and the second bidirectional screws are both sleeved with second synchronous wheels, and two groups of vertically distributed second synchronous belts are provided in the mounting frame, and the second synchronous belts are respectively connected to the two corresponding groups of second synchronous wheels for transmission.

[0010] As a further preferred embodiment of the present technical solution, the fixed frame is slidably connected to the base, and two groups of symmetrically distributed screw rods are provided in the base, and the two ends of the screw rods respectively pass through the base and are rotatably connected to the base, the screw rods pass through the fixed frame and are threadedly connected to the fixed frame, and a transmission belt is provided in the base, and transmission wheels are sleeved on the two groups of screw rods, and the transmission belts are respectively connected to the two groups of transmission wheels.

[0011] As a further preferred embodiment of the present technical solution, the mounting frame is rotatably connected to the fixed frame via a mounting shaft, a gear is sleeved on the mounting shaft, a rack and a cylinder are provided in the fixed frame, the rack is slidably connected to the fixed frame, the rack is connected to the output end of the cylinder piston rod, and the rack is meshed with the gear.

[0012] The utility model provides a metal mounting bracket for an instrument panel that is easy to install and has the following beneficial effects:

[0013] (1) The utility model realizes the rapid positioning and installation of the instrument panel through the four groups of clamping blocks and four groups of positioning rods. The installation process is convenient and quick, and the spacing between the four groups of clamping blocks and the four groups of positioning rods can be freely adjusted. It is suitable for the fixed installation of different types of instrument panels, and is convenient for staff to assemble various instrument assembly parts on the instrument panel; the first bidirectional screw rod and the second bidirectional screw rod are driven to rotate by the motor, and the two groups of first bidirectional screw rods and the two groups of second bidirectional screw rods are synchronously rotated under the action of the first synchronous belt and the first synchronous wheel. Under the limiting action of the mounting frame, the spacing between the two groups of first adjustment rods and the two groups of second adjustment rods is adjusted, so that the four groups of clamping blocks are synchronously moved inward. Or slide outward to complete the adjustment of the spacing between the four groups of clamps, so as to achieve external support for different models of instrument panels. At the same time, the first bidirectional screw and the second bidirectional screw are driven to rotate by the motor. Under the action of the second synchronous belt and the second synchronous wheel, the two groups of first bidirectional screws and the two groups of second bidirectional screws rotate synchronously. Under the limiting action of the mounting frame, the spacing between the two groups of first clamping rods and the two groups of second clamping rods is adjusted, and then the four groups of positioning rods slide inward or outward synchronously to complete the adjustment of the spacing between the four groups of positioning rods. The four groups of clamps are used to realize the reinforcement of the instrument panel, which is convenient for the staff to complete the installation of various instrument assembly components on the instrument panel.

[0014] (2) The utility model realizes the adjustment of the installation height and angle of the mounting frame through the provided base and fixing frame, thereby facilitating the workers' needs to perform fixed installation operations on the instrument panel and various components, and is suitable for use by workers of different body shapes; the motor in the base drives the rotation of the screw rod, and the two sets of screw rods are synchronously rotated under the action of the transmission belt and the transmission wheel, and the height of the fixing frame and the mounting frame are adjusted under the limiting action of the base. At the same time, the rack is driven to slide by starting the cylinder in the fixing frame, and the rotation of the mounting shaft and the mounting frame is realized in conjunction with the gear, thereby adjusting the angle of the instrument panel fixed on the mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the fixing frame of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the mounting bracket of the present utility model;

[0018] Figure 4 For the utility model Figure 3 -A magnified view of the structure;

[0019] Figure 5 For the utility model Figure 3-A magnified view of the structure at point B;

[0020] Figure 6 For the utility model Figure 3 -A magnified view of the structure at C;

[0021] In the figure: 1. Base; 2. Fixing frame; 3. Mounting frame; 4. Screw; 5. Drive wheel; 6. Drive belt; 7. Mounting shaft; 8. Gear; 9. Rack; 10. Cylinder; 11. Clamping block; 12. Positioning rod; 13. First adjusting rod; 14. Second adjusting rod; 15. First bidirectional screw; 16. Second bidirectional screw; 17. First synchronous wheel; 18. First synchronous belt; 19. First clamping rod; 20. Second clamping rod; 21. First bidirectional screw; 22. Second bidirectional screw; 23. Second synchronous wheel; 24. Second synchronous belt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1 、 Figure 3 、 Figure 5 and Figure 6As shown, in this embodiment, a metal mounting bracket for an instrument panel that is easy to install includes a base 1, a fixing bracket 2 is provided on the base 1, a mounting bracket 3 is provided above the fixing bracket 2, four groups of symmetrically distributed clamping blocks 11 are provided in the mounting bracket 3, four groups of symmetrically distributed positioning rods 12 are provided in the mounting bracket 3, two groups of symmetrically distributed first adjustment rods 13 and second adjustment rods 14 are provided in the mounting bracket 3, the two groups of first adjustment rods 13 and second adjustment rods 14 are both slidably connected to the mounting bracket 3, the two adjacent groups of first adjustment rods 13 and second adjustment rods 14 are vertically distributed, and two groups of symmetrically distributed first bidirectional screw rods 15 and second bidirectional screw rods 16 are provided in the mounting bracket 3. Two groups of symmetrically distributed first clamping rods 19 and second clamping rods 20 are provided in the mounting frame 3. The two groups of first clamping rods 19 and second clamping rods 20 are both slidably connected to the mounting frame 3. The two adjacent groups of first clamping rods 19 and second clamping rods 20 are vertically distributed. Two groups of symmetrically distributed first bidirectional screws 21 and second bidirectional screws 22 are provided in the mounting frame 3. The clamping block 11 is slidably connected to the two adjacent groups of first adjustment rods 13 and second adjustment rods 14 respectively. The positioning rod 12 is slidably connected to the two adjacent groups of first clamping rods 19 and second clamping rods 20 respectively. The two ends of the two groups of first bidirectional screw rods 15 respectively pass through the mounting frame 3 and are rotatably connected to the mounting frame 3 through bearings. The first The two-way screw rod 15 passes through the two groups of first adjusting rods 13 and is respectively threadedly connected to the two groups of first adjusting rods 13. The two ends of the two groups of second two-way screw rods 16 pass through the mounting frame 3 and are rotatably connected to the mounting frame 3 through bearings. The second two-way screw rod 16 passes through the two groups of second adjusting rods 14 and is respectively threadedly connected to the two groups of second adjusting rods 14. The two groups of first two-way screw rods 15 and the second two-way screw rods 16 are sleeved with a first synchronous wheel 17. Two groups of vertically distributed first synchronous belts 18 are provided in the mounting frame 3. The first synchronous belts 18 are respectively connected to the two corresponding groups of first synchronous wheels 17 for transmission. The two ends of the two groups of first two-way screws 21 pass through The mounting frame 3 is rotatably connected to the mounting frame 3 through bearings, the first bidirectional screw 21 respectively penetrates the two groups of first clamping rods 19 and is threadedly connected to the two groups of first clamping rods 19, the two ends of the two groups of second bidirectional screws 22 respectively penetrate the mounting frame 3 and are rotatably connected to the mounting frame 3 through bearings, the second bidirectional screw 22 respectively penetrates the two groups of second clamping rods 20 and is threadedly connected to the two groups of second clamping rods 20, the two groups of first bidirectional screws 21 and the second bidirectional screws 22 are both sleeved with second synchronous wheels 23, and two groups of vertically distributed second synchronous belts 24 are provided in the mounting frame 3, and the second synchronous belts 24 are respectively transmission-connected to the two corresponding groups of second synchronous wheels 23.

[0024] The four groups of clamping blocks 11 and the four groups of positioning rods 12 are provided to realize the rapid positioning and installation of the instrument panel. The installation process is convenient and quick, and the spacing between the four groups of clamping blocks 11 and the four groups of positioning rods 12 can be freely adjusted, which is suitable for the fixed installation of different types of instrument panels, and is convenient for the staff to assemble various instrument assembly components on the instrument panel; the first bidirectional screw rod 15 and the second bidirectional screw rod 16 are driven to rotate by the motor, and the two groups of first bidirectional screw rods 15 and the two groups of second bidirectional screw rods 16 are rotated synchronously under the action of the first synchronous belt 18 and the first synchronous wheel 17. Under the limiting action of the mounting frame 3, the spacing between the two groups of first adjustment rods 13 and the two groups of second adjustment rods 14 is adjusted, so that the four groups of clamping blocks 11 are synchronously moved inward or outward. Slide to complete the adjustment of the distance between the four groups of clamps 11, so as to achieve external support for different models of instrument panels, and at the same time, the first bidirectional screw 21 and the second bidirectional screw 22 are driven to rotate by the motor, and the two groups of first bidirectional screws 21 and the two groups of second bidirectional screws 22 are rotated synchronously under the action of the second synchronous belt 24 and the second synchronous wheel 23. Under the limiting action of the mounting frame 3, the distance between the two groups of first clamping rods 19 and the two groups of second clamping rods 20 is adjusted, and then the four groups of positioning rods 12 are synchronously slid inward or outward to complete the adjustment of the distance between the four groups of positioning rods 12, and cooperate with the four groups of clamps 11 to realize the fixed reinforcement of the instrument panel, which is convenient for the staff to complete the installation of various instrument assembly components on the instrument panel.

[0025] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the fixed frame 2 is slidably connected to the base 1, and two groups of symmetrically distributed screw rods 4 are provided in the base 1. The two ends of the screw rods 4 respectively pass through the base 1 and are rotatably connected to the base 1. The screw rods 4 pass through the fixed frame 2 and are threadedly connected to the fixed frame 2. A transmission belt 6 is provided in the base 1. The two groups of screw rods 4 are sleeved with transmission wheels 5. The transmission belt 6 is transmission-connected to the two groups of transmission wheels 5 respectively. The mounting frame 3 is rotationally connected to the fixed frame 2 through the mounting shaft 7. A gear 8 is sleeved on the mounting shaft 7. A rack 9 and a cylinder 10 are provided in the fixed frame 2. The rack 9 is slidably connected to the fixed frame 2, the rack 9 is connected to the output end of the piston rod of the cylinder 10, and the rack 9 is meshed with the gear 8.

[0026] The base 1 and the fixing frame 2 are provided to adjust the installation height and angle of the mounting frame 3, thereby facilitating the staff's needs for fixed installation operations of the dashboard and various components, and is suitable for use by staff of different body shapes; the motor in the base 1 drives the rotation of the screw rod 4, and the two sets of screw rods 4 are rotated synchronously under the action of the transmission belt 6 and the transmission wheel 5, and the height of the fixing frame 2 and the mounting frame 3 are adjusted under the limiting action of the base 1. At the same time, the rack 9 is driven to slide by starting the cylinder 10 in the fixing frame 2, and the gear 8 is cooperated to realize the rotation of the mounting shaft 7 and the mounting frame 3, thereby adjusting the angle of the dashboard fixed on the mounting frame 3.

[0027] The utility model provides a metal mounting bracket for an instrument panel that is easy to install. The specific working principle is as follows: the first bidirectional screw rod 15 and the second bidirectional screw rod 16 are driven to rotate by a motor, and the two groups of first bidirectional screw rods 15 and the two groups of second bidirectional screw rods 16 are caused to rotate synchronously under the action of the first synchronous belt 18 and the first synchronous wheel 17. Under the limiting action of the mounting frame 3, the spacing between the two groups of first adjustment rods 13 and the two groups of second adjustment rods 14 is adjusted, so that the four groups of clamping blocks 11 slide inward or outward synchronously, and the adjustment of the spacing between the four groups of clamping blocks 11 is completed, so as to achieve external support for instrument panels of different models. At the same time, the first bidirectional screw rod 21 and the second bidirectional screw rod 22 are driven to rotate by a motor, and the two groups of first bidirectional screw rods 21 and the two groups of second bidirectional screw rods 21 are caused to rotate synchronously under the action of the second synchronous belt 24 and the second synchronous wheel 23. The screw rod 22 rotates synchronously, and under the limiting action of the mounting frame 3, the distance between the two groups of first clamping rods 19 and the two groups of second clamping rods 20 is adjusted, so that the four groups of positioning rods 12 slide inward or outward synchronously, completing the adjustment of the distance between the four groups of positioning rods 12, and cooperating with the four groups of clamping blocks 11 to achieve reinforcement of the instrument panel, which is convenient for the staff to complete the installation of various instrument assembly components on the instrument panel. The motor in the base 1 drives the rotation of the screw rod 4, and the synchronous rotation of the two groups of screw rods 4 is achieved under the action of the transmission belt 6 and the transmission wheel 5. Under the limiting action of the base 1, the height of the fixing frame 2 and the mounting frame 3 is adjusted. At the same time, by starting the cylinder 10 in the fixing frame 2, the rack 9 is driven to slide, and the gear 8 is cooperated to realize the rotation of the installation shaft 7 and the mounting frame 3, thereby adjusting the angle of the instrument panel fixed on the mounting frame 3.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal mounting bracket for an instrument panel that is easy to install, comprising a base (1), characterized in that: The base (1) is provided with a fixing frame (2), and a mounting frame (3) is provided above the fixing frame (2). Four groups of symmetrically distributed clamping blocks (11) are provided in the mounting frame (3), and four groups of symmetrically distributed positioning rods (12) are provided in the mounting frame (3). Two groups of symmetrically distributed first adjustment rods (13) and second adjustment rods (14) are provided in the mounting frame (3), and the two groups of the first adjustment rods (13) and the second adjustment rods (14) are both slidably connected to the mounting frame (3). The two adjacent groups of the first adjustment rods (13) and the second adjustment rods (14) are vertically distributed. The mounting frame (3) is provided with two groups of symmetrically distributed first bidirectional screw rods (15) and second bidirectional screw rods (15). The screw rod (16) is provided in the mounting frame (3), and two groups of symmetrically distributed first clamping rods (19) and second clamping rods (20) are both slidably connected to the mounting frame (3), and the two adjacent groups of first clamping rods (19) and second clamping rods (20) are vertically distributed. The mounting frame (3) is provided with two groups of symmetrically distributed first bidirectional screw rods (21) and second bidirectional screw rods (22), and the clamping block (11) is respectively slidably connected to the two adjacent groups of first adjustment rods (13) and second adjustment rods (14), and the positioning rod (12) is respectively slidably connected to the two adjacent groups of first clamping rods (19) and second clamping rods (20).

2. The easy-to-install instrument panel metal mounting bracket according to claim 1, characterized in that: The two ends of the two groups of the first bidirectional screw rods (15) respectively pass through the mounting frame (3) and are rotatably connected to the mounting frame (3) through bearings. The first bidirectional screw rods (15) respectively pass through the two groups of the first adjustment rods (13) and are respectively threadedly connected to the two groups of the first adjustment rods (13). The two ends of the two groups of the second bidirectional screw rods (16) respectively pass through the mounting frame (3) and are rotatably connected to the mounting frame (3) through bearings. The second bidirectional screw rods (16) respectively pass through the two groups of the second adjustment rods (14) and are respectively threadedly connected to the two groups of the second adjustment rods (14).

3. The easy-to-install instrument panel metal mounting bracket according to claim 1, characterized in that: The two groups of the first bidirectional screw rods (15) and the second bidirectional screw rods (16) are both sleeved with first synchronous wheels (17), and the mounting frame (3) is provided with two groups of vertically distributed first synchronous belts (18), and the first synchronous belts (18) are respectively connected to the two corresponding groups of first synchronous wheels (17) in a transmission manner.

4. The easy-to-install instrument panel metal mounting bracket according to claim 1, characterized in that: The two ends of the two groups of the first bidirectional screw rods (21) respectively pass through the mounting frame (3) and are rotatably connected to the mounting frame (3) through bearings. The first bidirectional screw rods (21) respectively pass through the two groups of the first clamping rods (19) and are respectively threadedly connected to the two groups of the first clamping rods (19). The two ends of the two groups of the second bidirectional screw rods (22) respectively pass through the mounting frame (3) and are rotatably connected to the mounting frame (3) through bearings. The second bidirectional screw rods (22) respectively pass through the two groups of the second clamping rods (20) and are respectively threadedly connected to the two groups of the second clamping rods (20).

5. The easy-to-install instrument panel metal mounting bracket according to claim 1, characterized in that: The two groups of the first bidirectional screw rods (21) and the second bidirectional screw rods (22) are both sleeved with second synchronous wheels (23), and the mounting frame (3) is provided with two groups of vertically distributed second synchronous belts (24), and the second synchronous belts (24) are respectively connected to the two corresponding groups of second synchronous wheels (23) in a transmission manner.

6. The easy-to-install instrument panel metal mounting bracket according to claim 1, characterized in that: The fixing frame (2) is slidably connected to the base (1); two groups of symmetrically distributed screw rods (4) are provided in the base (1); the two ends of the screw rods (4) respectively pass through the base (1) and are rotatably connected to the base (1); the screw rods (4) pass through the fixing frame (2) and are threadedly connected to the fixing frame (2); a transmission belt (6) is provided in the base (1); a transmission wheel (5) is sleeved on the two groups of screw rods (4); and the transmission belt (6) is respectively transmission-connected to the two groups of transmission wheels (5).

7. The easy-to-install instrument panel metal mounting bracket according to claim 1, characterized in that: The mounting frame (3) is rotatably connected to the fixed frame (2) via a mounting shaft (7); a gear (8) is sleeved on the mounting shaft (7); a rack (9) and a cylinder (10) are provided in the fixed frame (2); the rack (9) is slidably connected to the fixed frame (2); the rack (9) is connected to the output end of the piston rod of the cylinder (10); and the rack (9) is meshed with the gear (8).