Armrest box support convenient to lock

Abstract

When the armrest box support is moved back and forth to adjust the position of an armrest box, a movable steel wire inner core of a Bowden cable is pulled firstly, so that the front end of the movable steel wire inner core pulls a linkage plate to drive a rotating clamping plate to rotate in the direction away from a rack through a rotating shaft, and connecting teeth of the rotating clamping plate are separated from side teeth of the rack; then a sliding connecting plate is adjusted to slide back and forth along a fixed guide rail so that the armrest box can be adjusted to a proper position, then a movable steel wire inner core is loosened so that a linkage plate can be pulled to rotate to an original position through reset elastic force of a spring, and then connecting teeth of a rotating clamping plate are meshed with side teeth of a rack so that the armrest box can be locked; the locking assembly of the armrest box support is small in occupied space, the overall design size of an armrest box is reduced, the tooth shapes of the side teeth of the rack and the connecting teeth of the rotating clamping plate in the locking assembly are specifically designed helical teeth, and therefore the connecting teeth of the rotating clamping plate are meshed with the side teeth of the rack more firmly, and the stability of the armrest box support is improved. And the situation that the armrest box moves back and forth in a locked state is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of armrest boxes, and particularly to an armrest box bracket that is convenient to lock. Background Art

[0002] An armrest box is usually arranged in the cab and installed on the side of the seat. In the cab of construction machinery, operating equipment is also arranged at the front end of the armrest box. When the driver is operating, the armrest box can support the driver's arm to facilitate operation and can effectively relieve the fatigue of the driver's arm. In order to facilitate the operation of personnel with different heights and arm lengths, the existing armrest box usually designs the armrest box bracket to be movable and adjustable, so that when personnel with different heights are operating, they can adjust the position of the armrest box back and forth according to their own arm lengths to reach the most comfortable state. The existing bracket assembly of the movable and adjustable armrest box is usually provided with a locking mechanism to facilitate locking the armrest box after moving and adjusting. However, the locking mechanisms of some existing armrest box bracket assemblies occupy a large space, which in turn increases the overall design volume of the armrest box and is not conducive to the installation of the armrest box on the side of the seat. There are also some locking mechanisms that are not firm enough, which may cause the armrest box to move back and forth in the locked state. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present application is to provide an armrest box bracket that is convenient to lock to solve the problems raised in the above background art.

[0004] According to one aspect of the present application, an armrest box bracket that is convenient to lock includes a mounting bracket, a fixed guide rail, a sliding connecting plate, and a locking assembly. The top of the mounting bracket is fixedly provided with a fixed guide rail, and a sliding connecting plate is slidably arranged on the fixed guide rail. The mounting bracket is locked and connected to the sliding connecting plate through the locking assembly. The locking assembly includes a rotating seat, a rotating shaft, a linkage plate, a driving member, a rotating clamping plate, and a rack. The rotating seat is fixedly installed on the lower side of the top of the mounting bracket. The rotating shaft is rotatably connected to the inside of the rotating seat. The lower end of the rotating shaft extends beyond the bottom of the rotating seat and is fixedly connected to one end of the linkage plate. The other end of the linkage plate is fixedly connected to the driving member. The upper end of the rotating shaft extends beyond the top of the rotating seat and penetrates through the top of the mounting bracket and is fixedly connected to one end of the rotating clamping plate. A connecting tooth is arranged on the side of the other end of the rotating clamping plate. A rack is fixedly arranged on the bottom of the sliding connecting plate along its sliding direction. The rack and the rotating clamping plate are arranged in the same plane. The tooth shape of the side teeth of the rack is adapted to the tooth shape of the connecting tooth. The connecting tooth of the rotating clamping plate can be rotated to be meshed and connected with the side teeth of the rack.

[0005] Preferably, the tooth shapes of the connecting tooth and the side teeth of the rack are both helical tooth shapes, and the connecting tooth is obliquely arranged in the direction of the rotation axis position of the rotating clamping plate.

[0006] Preferably, the tooth profile angles on both sides of the connecting teeth are different, and the tooth profile angle on one side of the connecting teeth close to the rotation axis position of the rotating clamping plate is 10° - 20°, and the tooth profile angle on the side of the connecting teeth far from the rotation axis position of the rotating clamping plate is 30° - 40°.

[0007] Preferably, the driving member is a Bowden cable. The front end of the outer tube of the Bowden cable is fixedly installed on the mounting bracket. The front end of the movable steel wire core of the Bowden cable is fixedly connected to the other end of the linkage plate by a screw. And the moving direction of the movable steel wire core and the rotating direction of the linkage plate are in the same plane. A fixed column is also fixedly provided on the lower side of the top of the mounting bracket. The two ends of the spring are respectively fixedly connected to the fixed column and the linkage plate. When the movable steel wire core of the Bowden cable drives the linkage plate to rotate, the spring is in a stretched state.

[0008] Preferably, limit plates are fixedly provided at both ends in the sliding direction of the sliding connection plate. The bottom height of the limit plate is lower than the top height of the mounting bracket. The limit plate can contact the side of the mounting bracket under the drive of the sliding of the sliding connection plate.

[0009] Preferably, both sides of the fixed guide rail are upturned to form tracks. Both sides of the sliding connection plate are bent inward to form sliding cavities, and at least one slider is fixedly provided in the sliding cavities. The sliders on both sides of the sliding connection plate are respectively slidably connected to the tracks on both sides of the fixed guide rail.

[0010] The advantages of the present application compared with the prior art are as follows: For a console box bracket that is easy to lock in the present application, through the setting of the locking assembly composed of the engagement connection between the side teeth of the rack and the connecting teeth of the rotating clamping plate, when adjusting the position of the console box by moving it forward and backward, first pull the movable steel wire core of the Bowden cable, so that the front end of the movable steel wire core pulls the linkage plate to drive the rotating shaft to rotate, and at the same time the linkage plate stretches the spring, and then drives the rotating clamping plate to rotate away from the rack direction, so that the connecting teeth of the rotating clamping plate are separated from the side teeth of the rack. Then adjust the sliding connection plate to slide forward and backward along the fixed guide rail to adjust the console box to a suitable position. Then release the movable steel wire core of the Bowden cable, and then the restoring elastic force of the spring pulls the linkage plate to rotate back to its original position, and then drives the rotating shaft to rotate by the linkage plate to drive the rotating clamping plate to rotate towards the rack direction, so that the connecting teeth of the rotating clamping plate are engaged with the side teeth of the rack, and then the position of the sliding connection plate is locked, that is, the position of the console box is locked. The locking assembly of this console box bracket occupies a small space, reducing the overall design volume of the console box. And the tooth profiles of the side teeth of the rack and the connecting teeth of the rotating clamping plate in this locking assembly are specially designed helical tooth profiles, so that when the connecting teeth of the rotating clamping plate are engaged with the side teeth of the rack, it is more firm, avoiding the situation that the console box moves forward and backward in the locked state. Brief Description of the Drawings

[0011] Figure 1 Figure 1 is a side view of an armrest box bracket that is easy to lock according to an embodiment of the present application.

[0012] Figure 2 Figure 2 is a front view of an armrest box bracket that is easy to lock according to an embodiment of the present application.

[0013] Figure 3 Figure 3 is a three-dimensional cross-sectional view of an armrest box bracket that is easy to lock according to an embodiment of the present application.

[0014] Figure 4 Figure 4 is a bottom view of the three-dimensional cross-sectional view of an armrest box bracket that is easy to lock according to an embodiment of the present application.

[0015] Figure 5 Figure 5 is a schematic structural diagram of the engagement between the rack and the rotating clamping plate of an armrest box bracket that is easy to lock according to an embodiment of the present application.

[0016] Figure 6 is Figure 5 an enlarged schematic structural diagram of part A in

[0017] Figure 7 Figure 6 is a schematic structural diagram of the separation between the rack and the rotating clamping plate of an armrest box bracket that is easy to lock according to an embodiment of the present application.

[0018] Figure 8 Figure 7 is a three-dimensional view of the sliding connection plate of an armrest box bracket that is easy to lock after being adjusted for movement according to an embodiment of the present application.

[0019] Reference numerals: 1, mounting bracket; 2, fixed guide rail; 21, track; 3, sliding connection plate; 4, locking assembly; 41, rotating seat; 42, rotating shaft; 43, linkage plate; 44, Bowden cable; 441, outer sleeve; 442, movable wire inner core; 45, rotating clamping plate; 451, connecting teeth; 46, rack; 5, fixed column; 6, spring; 7, limiting plate; 8, slider. Detailed Description of the Embodiment

[0020] In order to make the content of the present application more clearly understood, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the Figure 2 drawings, and the words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0021] As shown in Figures 1 to 8As shown in the figure, an armrest box bracket that is convenient for locking includes a mounting bracket 1, a fixed guide rail 2, a sliding connection plate 3, and a locking component 4. In actual design, the mounting bracket 1 is used for fixed installation on the side of the driver's seat. A fixed guide rail 2 is fixedly provided at the top of the mounting bracket 1. A sliding connection plate 3 is slidably provided on the fixed guide rail 2. Specifically, both sides of the fixed guide rail 2 are warped to form a track 21. Both sides of the sliding connection plate 3 are bent inward to form a sliding cavity, and at least one slider 8 is fixedly provided in the sliding cavity. The sliders 8 on both sides of the sliding connection plate 3 are respectively slidably connected to the tracks 21 on both sides of the fixed guide rail 2. In actual design, an armrest box cover is installed on the sliding connection plate 3, and a control device is further provided at the front end of the armrest box cover. When operating, the driver's arm can rest on the armrest box to facilitate operation and reduce arm fatigue.The mounting bracket 1 is locked and connected to the sliding connection plate 3 through the locking component 4. Specifically, the locking component 4 includes a rotating seat 41, a rotating shaft 42, a linkage plate 43, a driving member, a rotating clamping plate 45, and a rack 46. The rotating seat 41 is fixedly installed on the lower side of the top of the mounting bracket 1. The rotating shaft 42 is rotatably connected within the rotating seat 41. The lower end of the rotating shaft 42 extends beyond the bottom of the rotating seat 41 and is fixedly connected to one end of the linkage plate 43. The other end of the linkage plate 43 is fixedly connected to the driving member. The driving member is selected as a Bowden cable 44. The front end of the outer tube 441 of the Bowden cable 44 is fixedly installed on the mounting bracket 1. The rear end of the movable wire core 442 of the Bowden cable 44 is arranged on the power control device in the cab to provide power to the Bowden cable 44 (not shown in the figure). The front end of the movable wire core 442 of the Bowden cable 44 is fixedly connected to the other end of the linkage plate 43 by screws, and the moving direction of the movable wire core 442 and the rotating direction of the linkage plate 43 are in the same plane, so that when the Bowden cable 44 pulls the movable wire core 442, it can smoothly drive the linkage plate 43 to rotate; a fixed column 5 is also fixedly provided on the lower side of the top of the mounting bracket 1. The two ends of the spring 6 are respectively fixedly connected to the fixed column 5 and the linkage plate 43. When the movable wire core 442 of the Bowden cable 44 drives the linkage plate 43 to rotate, the spring 6 is in a stretched state. This setting can drive the linkage plate 43 to rotate back to its original position by the restoring elastic force of the spring 6 when the movable wire core 442 of the Bowden cable 44 is released; the upper end of the rotating shaft 42 extends beyond the top of the rotating seat 41 and penetrates through the top of the mounting bracket 1 and is fixedly connected to one end of the rotating clamping plate 45. A connecting tooth 451 is arranged on the side of the other end of the rotating clamping plate 45. A rack 46 is fixedly provided along the sliding direction at the bottom of the sliding connection plate 3. The rack 46 and the rotating clamping plate 45 are arranged in the same plane, so that the rotating clamping plate 45 can be locked and connected to the rack 46. That is, when engaged and locked, the connecting tooth 451 of the rotating clamping plate 45 can be adapted to the tooth groove of the side tooth of the rack 46. Specifically, the tooth shapes of the connecting tooth 451 and the side tooth of the rack 46 are both helical tooth shapes, and when engaged and locked, the oblique direction of the connecting tooth 451 is parallel to the oblique direction of the side tooth of the rack 46. The connecting tooth 451 is obliquely arranged towards the direction of the rotation axis of the rotating clamping plate 45. This setting enables the connecting tooth 451 on the rotating clamping plate 45 to smoothly separate from the side tooth of the rack 46 when the rotating clamping plate 45 rotates around the rotation axis; in addition, the tooth shape angles on both sides of the connecting tooth 451 are different. The tooth shape angle on the side of the connecting tooth 451 close to the rotation axis of the rotating clamping plate 45 is 15°, and the tooth shape angle on the side of the connecting tooth 451 far from the rotation axis of the rotating clamping plate 45 is 38°. And its tooth pitch is 4.5 ± 0.05 mm, the bottom width of its tooth groove is 1.6 ± 0.05 mm, and the tooth height is 2.2 ± 0.05 mm. This specifically designed helical tooth shape can make the connection between the connecting tooth 451 of the rotating clamping plate 45 and the side tooth of the rack 46 more firm, avoid the situation that the locking component 4 is not locked firmly, and prevent the front and back movement of the armrest box in the locked state.In addition, limiting plates 7 are fixedly arranged at both ends of the sliding connecting plate 3 in the sliding direction. The bottom height of the limiting plate 7 is lower than the top height of the mounting bracket 1. Thus, when the sliding connecting plate 3 slides along the fixed guide rail 2 to the front and rear extreme positions, the limiting plate 7 can contact the side of the mounting bracket 1, thereby playing a limiting role.

[0022] Working principle: When adjusting the position of the armrest box back and forth, first pull the movable wire core 442 of the Bowden wire 44. Then, the front end of the movable wire core 442 pulls the linkage plate 43 to drive the rotating shaft 42 to rotate. At the same time, the linkage plate 43 stretches the spring 6, and then drives the rotating clamping plate 45 to rotate away from the rack 46, so that the connecting teeth 451 of the rotating clamping plate 45 are separated from the side teeth of the rack 46. Then, adjust the sliding connecting plate 3 to slide back and forth along the fixed guide rail 2 to adjust the armrest box to a suitable position. Then, release the movable wire core 442 of the Bowden wire 44. Then, the restoring elastic force of the spring 6 pulls the linkage plate 43 to rotate back to its original position. Then, the linkage plate 43 drives the rotating shaft 42 to rotate and drives the rotating clamping plate 45 to rotate towards the rack 46, so that the connecting teeth 451 of the rotating clamping plate 45 are meshed and connected with the side teeth of the rack 46. Thus, the position of the sliding connecting plate 3 is locked, that is, the position of the armrest box is locked, and the armrest box is adjusted to a suitable position.

[0023] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that without departing from the spirit and scope defined by the claims of the present application, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features.

Claims

1. An armrest box bracket facilitating locking, comprising a mounting bracket (1), a fixed guide rail (2), a sliding connecting plate (3) and a locking assembly (4). A fixed guide rail (2) is fixedly arranged at the top of the mounting bracket (1). A sliding connecting plate (3) is slidably arranged on the fixed guide rail (2). The mounting bracket (1) is locked and connected to the sliding connecting plate (3) through the locking assembly (4), characterized in that, The locking component (4) includes a rotating seat (41), a rotating shaft (42), a linkage plate (43), a driving member, a rotating clamping plate (45) and a rack (46). The rotating seat (41) is fixedly installed on the lower side of the top of the mounting bracket (1). The rotating shaft (42) is rotatably connected within the rotating seat (41). The lower end of the rotating shaft (42) extends beyond the bottom of the rotating seat (41) and is fixedly connected to one end of the linkage plate (43). The other end of the linkage plate (43) is fixedly connected to the driving member. The upper end of the rotating shaft (42) extends beyond the top of the rotating seat (41) and passes through the top of the mounting bracket (1) to be fixedly connected to one end of the rotating clamping plate (45). A connecting tooth (451) is provided on the side of the other end of the rotating clamping plate (45). A rack (46) is fixedly provided along the sliding direction at the bottom of the sliding connecting plate (3). The rack (46) and the rotating clamping plate (45) are arranged in the same plane. The tooth shape of the side teeth of the rack (46) is adapted to the tooth shape of the connecting tooth (451). The connecting tooth (451) of the rotating clamping plate (45) can be rotated to be meshed and connected with the side teeth of the rack (46).

2. The armrest box bracket that is easy to lock according to claim 1, wherein, The tooth shapes of the connecting tooth (451) and the side teeth of the rack (46) are both helical tooth shapes, and the connecting tooth (451) is obliquely arranged in the direction of the rotation axis position of the rotating clamping plate (45).

3. The armrest box bracket capable of being easily locked according to claim 2, wherein, The tooth shape angles on both sides of the connecting tooth (451) are different. The tooth shape angle on one side of the connecting tooth (451) close to the rotation axis position of the rotating clamping plate (45) is 10° - 20°, and the tooth shape angle on the side of the connecting tooth (451) far from the rotation axis position of the rotating clamping plate (45) is 30° - 40°.

4. The armrest box bracket that is convenient to lock according to claim 1, wherein, The driving member is a Bowden cable (44). The front end of the outer tube (441) of the Bowden cable (44) is fixedly installed on the mounting bracket (1). The front end of the movable wire core (442) of the Bowden cable (44) is fixedly connected to the other end of the linkage plate (43) by a screw. And the moving direction of the movable wire core (442) and the rotating direction of the linkage plate (43) are in the same plane. A fixed column (5) is also fixedly provided on the lower side of the top of the mounting bracket (1). The two ends of a spring (6) are respectively fixedly connected to the fixed column (5) and the linkage plate (43). When the movable wire core (442) of the Bowden cable (44) drives the linkage plate (43) to rotate, the spring (6) is in a stretched state.

5. The armrest box bracket that is easy to lock according to claim 1, characterized in that, Limit plates (7) are fixedly provided at both ends in the sliding direction of the sliding connecting plate (3). The bottom height of the limit plates (7) is lower than the top height of the mounting bracket (1). The limit plates (7) can contact the side of the mounting bracket (1) under the drive of the sliding of the sliding connecting plate (3).

6. The armrest box bracket capable of being easily locked according to claim 1, wherein Both sides of the fixed guide rail (2) are upturned to form tracks (21). Both sides of the sliding connecting plate (3) are bent inward to form sliding cavities, and at least one slider (8) is fixedly arranged in the sliding cavities. The sliders (8) on both sides of the sliding connecting plate (3) are respectively slidably connected with the tracks (21) on both sides of the fixed guide rail (2).

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