CN205417260U - Handrail adjusting device and have handrail adjusting device's engineering vehicle - Google Patents

Abstract

The utility model discloses an armrest adjusting device and an engineering vehicle with the armrest adjusting device. The armrest adjusting device includes a fixed body and an armrest assembly, and also includes: an X-shaped frame, the top of which has a first connecting part and a second connecting part, Its bottom has a third connecting portion and a fourth connecting portion, and the first connecting portion is slidably connected to the armrest assembly back and forth, the second connecting portion is hinged to the armrest assembly, the third connecting portion is located on the lower side of the first connecting portion, and It can be slidably connected to the fixed body, the fourth connecting part is located on the lower side of the second connecting part, and is hinged to the fixed body; the locking structure is used to lock or unlock the first connecting part, and the locking structure is arranged on the armrest Assembly. The utility model can adjust the height of the handrail, and the locking process is simple and the adjustment process is convenient.

Description

An armrest adjusting device and an engineering vehicle with the armrest adjusting device

technical field

The utility model relates to the field of mechanical equipment, in particular to an armrest adjusting device and an engineering vehicle with the armrest adjusting device.

Background technique

The right and/or left sides of the cab seats of engineering vehicles such as forklifts are generally equipped with armrests. There are generally two types of armrests, one is fixed armrests, and the height of the armrests is designed according to the average height of ordinary people. The design is not enough Humanized, it is difficult to meet the comfort requirements of different users. The other is the height-adjustable armrest, which has a more humanized design and can flexibly adjust the height according to the height of the user, thereby improving the comfort of the user. At present, although some height-adjustable handrails are simple in structure and relatively low in cost, they are inconvenient to adjust and often require tools such as wrenches, while others are relatively complicated, inconvenient to install, and costly.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a handrail adjusting device with a simple and convenient adjustment process and an engineering vehicle with the handrail adjusting device.

The technical solution adopted by the utility model to solve the technical problem is: a handrail adjustment device, including a fixed body and a handrail assembly, and also includes:

X-shaped frame, its top has a first connection part and a second connection part, its bottom has a third connection part and a fourth connection part, and the first connection part is slidably connected to the armrest assembly back and forth, and the second connection part is hinged In the armrest assembly, the third connecting part is located on the lower side of the first connecting part and is connected to the fixed body in a forward and backward sliding manner, and the fourth connecting part is located on the lower side of the second connecting part and is hinged to the fixed body;

The locking structure is used for locking or unlocking the first connecting part, and the locking structure is arranged on the armrest assembly.

Further, a retractable booster mechanism is also included. When the locking structure unlocks the first connecting portion, the armrest assembly is pushed by the booster mechanism, or the third connecting portion is pushed or pulled by the booster mechanism.

Further, the locking structure includes a row of protruding teeth or at least two rows of protruding teeth arranged in a row along the front-to-rear direction of the armrest assembly, and the tooth tips of each protruding tooth face downward. When the first connecting part is locked into the interval between any two adjacent protruding teeth in the same row, the first connecting part is in a locked state; when the first connecting part withdraws from the interval between any two adjacent protruding teeth in the same row, the first connecting part part is unlocked.

Further, the booster mechanism is a cylinder, which is installed on the fixed body, and the piston rod of the cylinder is movably connected to the armrest assembly or the second connecting part or the third connecting part; or, the boosting mechanism is One end of the gas spring or spring is connected to the fixed body or the fourth connection part, and the other end is connected to the armrest assembly or the second connection part or the third connection part.

Further, the armrest assembly is an integral structure, which drives the locking structure to lock or unlock the first connecting part through rotation; the armrest assembly is provided with a sliding guide structure for the first connecting part.

Further, the armrest assembly includes an armrest and a locking frame rotatably connected to the armrest, the locking frame is provided with the protruding teeth, and drives the locking structure to lock or unlock the first connecting part through rotation. The first connecting part is slidably connected to the armrest, and the armrest is provided with a sliding guide structure of the first connecting part, and the second connecting part is hinged to the armrest; the fixed body is provided with a sliding guide of the third connecting part structure.

Further, the locking frame is covered on the inner side of the armrest, and the locking frame is connected or formed with a control handle, which drives the locking frame to rotate upwards or downwards through the control handle, and the armrest is correspondingly provided with a handle for the control handle to extend And the give way hole that can move up and down.

Further, a restoring elastic member is connected between the locking frame and the second connecting portion of the armrest or the X-shaped frame.

Further, the X-shaped frame includes at least two brackets, and each bracket is hinged into an X-shaped structure by a first pole and a second pole; the first poles of the at least two brackets are parallel to each other, and the second poles of the at least two brackets are The two poles are parallel to each other, and the at least two brackets are independent of each other or connected together by the same hinge shaft at their hinge points; the top ends of the first poles of the at least two brackets are connected together by a first movable pin, The first movable pin constitutes the first connecting portion, and the bottom ends of the second rods of the at least two brackets are connected together by a second movable pin, and the second movable pin constitutes the third connecting portion.

Further, the length of the first strut above the hinge point of each bracket is shorter than the length below the hinge point, and the length of the second strut of each bracket above the hinge point is greater than the length below the hinge point.

Further, the heights of the protruding teeth in the same row gradually decrease from the front end to the rear end of the armrest assembly.

An engineering vehicle with an armrest adjustment device includes any one of the above-mentioned armrest adjustment devices, the fixed body is installed in the cab of the engineering vehicle, or the fixed body is the frame of the engineering vehicle.

Further, a joystick is installed at the front end of the armrest assembly.

Further, the engineering vehicle is a forklift.

The beneficial effects of the utility model are:

1. The armrest adjustment device of the present utility model includes a fixed body and an armrest assembly, and is also provided with an X-shaped frame and a locking structure. By controlling the locking structure to unlock the first connecting part of the X-shaped frame, the armrest assembly can be relatively Move up and down on the fixed body to adjust the height of the armrest assembly, and the locking process is simple and convenient for adjustment.

2. The utility model is further equipped with the booster mechanism, which is used to replace the manual lifting of the handrail assembly, so that the height adjustment is more convenient and labor-saving.

3. The locking structure includes a row of protruding teeth arranged on the armrest assembly along the front and rear directions or at least two rows of protruding teeth juxtaposed in the left and right directions, and any two adjacent teeth in the same row are snapped into the first connecting part When within the interval of the convex teeth, the first connecting part is in the locked state, and when the first connecting part withdraws from the interval between any two adjacent convex teeth in the same row, the first connecting part is in the unlocked state, so that the structure of the utility model It is simpler and more convenient to operate, just lift or press down the armrest assembly.

4. The booster mechanism preferably adopts a cylinder or a gas spring or a spring, which has the characteristics of low cost, easy assembly, simple and convenient control, and the like.

5. In the utility model, when the armrest assembly is raised, the armrest assembly moves forward accordingly, thereby preventing the user's forearm from hanging too much on the armrest assembly, causing soreness and discomfort in the arm.

6. The length of the first strut above the hinge point of the X-shaped frame of the present utility model is less than the length below the hinge point, and the length of the second strut above the hinge point is greater than the length below the hinge point, so that the front end of the handrail Low, high rear end for ergonomics and increased user comfort.

7. The height of each protruding tooth of the armrest adjustment device of the present invention gradually decreases from the front end to the rear end of the armrest assembly, so that the armrest is in a horizontal or substantially horizontal state when it is at the lowest position, and when the armrest adjustment device is applied When used in an engineering vehicle, it can prevent the joystick arranged at the front end of the armrest from colliding with the operating platform of the vehicle.

8. The utility model has an engineering vehicle with an armrest adjustment device, and the adjustment armrest is set in the engineering vehicle, which can increase the comfort of the operator during operation, reduce the fatigue of the operator during the long-term vehicle operation, and reduce the fatigue of the operator. The operation safety plays a role of guarantee.

Compared with the prior art, the utility model has the advantages of fast adjustment speed, light adjustment, simple structure and fewer parts, so the cost is also lower.

The utility model will be further described in detail below with reference to the drawings and embodiments; however, the utility model of an armrest adjusting device and an engineering vehicle with the armrest adjusting device are not limited to the embodiments.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram one of the utility model embodiment one (the front end of the armrest faces forward);

Fig. 2 is the three-dimensional structure schematic diagram II of the utility model embodiment one (the front end of the handrail faces backward);

Fig. 3 is the three-dimensional structure schematic diagram three of the utility model embodiment one (handrail is pulled down);

Fig. 4 is a three-dimensional structural schematic diagram 1 of Embodiment 2 of the utility model;

Fig. 5 is a second perspective view of the second embodiment of the utility model.

detailed description

Embodiment one

Referring to Figures 1 to 3, an armrest adjustment device of the present invention includes a fixed body 10 and an armrest assembly, and also includes: an X-shaped frame 30, the top of which has a first connecting portion and a second connecting portion 321, Its bottom has a third connecting portion and a fourth connecting portion 312, and the first connecting portion is slidably connected to the armrest assembly back and forth, the second connecting portion 321 is hinged to the armrest assembly, and the third connecting portion is located on the lower side of the first connecting portion , and can be slidably connected back and forth to the fixed body 10, the fourth connecting part 312 is located on the lower side of the second connecting part 321, and is hinged to the fixed body 10; the locking structure is used to lock or unlock the first connecting part, The locking structure is arranged on the armrest assembly. The utility model also includes a retractable booster mechanism. When the locking structure unlocks the first connecting portion, the armrest assembly is pushed by the booster mechanism, or the third connecting portion is pushed or tightened by the booster mechanism.

In this embodiment, the booster mechanism is specifically a gas spring 50, one end of which is connected to the fixed body 10, and the other end is connected to the armrest assembly.

In this embodiment, the X-shaped frame 30 specifically includes two brackets (certainly also can include more than two brackets), and each bracket is hinged into an X-shaped structure by the first strut 31 and the second strut 32 respectively; The first poles 31 of the two supports are parallel to each other, and the second poles 32 of the two supports are parallel to each other. The same hinge shaft 33 is threaded together; the tops of the first poles 31 of the two supports are threaded together by a first movable pin 311, and the first movable pin 311 constitutes the first connecting portion. The bottom ends of the second poles 32 are connected together by a second movable pin 322 , and the second movable pin 322 constitutes the third connecting portion. And, the length of the first strut 31 of each support above the hinge point is less than the length below the hinge point, the length of the second strut 32 of each support above the hinge point is greater than the length below the hinge point, The front end of the armrest assembly is low and the rear end is high, which conforms to ergonomics and increases user comfort.

In this embodiment, the locking structure includes two rows of protruding teeth 41 arranged on the armrest assembly along the front and rear directions, and the tooth tip of each protruding tooth 41 faces downward, and the first movable pin 311 When snapping into the interval between any two adjacent protruding teeth in the same row, the first movable pin 311 is in a locked state; when the first movable pin 311 withdraws from the interval between any two adjacent protruding teeth 41 in the same row, the first movable pin A movable pin 311 is in an unlocked state, and then the X-shaped frame 30 is in an unlocked state, and the height of the armrest assembly can be adjusted in this state.

In this embodiment, the armrest assembly specifically includes an armrest 20 and a locking frame 40 rotatably connected to the armrest 20. The locking frame 40 is provided with the two rows of protruding teeth 41, and drives the protruding teeth 41 through rotation. Teeth 41 lock or unlock the first movable pin 311; the first movable pin 311 is slidably connected to the armrest 20, and the armrest 20 is provided with a sliding guide structure of the first movable pin 311, specifically the sliding guide structure is along the front and rear The direction is set in the strip-shaped guide hole 21 of the armrest 20. The strip-shaped guide hole 21 is inclined with a high front end and a low rear end, and the inclination angle is about 6°, so that the armrest is in a horizontal or substantially horizontal state when it is at the lowest position. The second connecting portion is specifically a third movable pin 321 , which is hinged to the armrest 20 . The fixed body 10 is provided with a sliding guide structure of the second movable pin 322 , and the sliding guide structure is a bar-shaped guide hole 11 arranged along the front-back direction of the fixed body 10 .

The locking frame 40 is specifically coated on the inner side of the armrest 20, and the locking frame 40 is connected or formed with a control handle 42, and the locking frame 40 is driven to rotate upward or downward by the control handle 42, and the armrest 20 is correspondingly provided with A relief hole 22 for the control handle 42 to stretch out and move up and down. A reset elastic member is connected between the locking frame 40 and the second connecting portion 321 of the X-shaped frame 30. In this embodiment, the reset elastic member is specifically a tension spring 60, and one end of the tension spring 60 is hooked The locking frame 40, the other end hooks the second connection part (or, can also hook the armrest 20), and the locking frame 40 is provided with a pre-tightening force by the extension spring 60, so that it can be reset, and the lock on it The locking structure can lock the first movable pin 311 more firmly.

When the height of the armrest 20 of the present utility model needs to be adjusted, first lift the armrest 20 or lift the control handle 42, the control handle 42 moves upward along the relief hole 22, and drives the locking frame 40 to rotate, so that the lock on the locking frame 40 The locking structure is separated from the first movable pin 311, thereby unlocking the first movable pin 311 of the X-shaped frame 30, so that the first movable pin 311 can slide along the strip guide hole 21; after the locking structure unlocks the first movable pin 311, the armrest 20 rises to the highest position under the push of the gas spring 50. At this time, if the height of the armrest 20 is acceptable to the user, the adjustment is completed. If the height of the armrest 20 is too high, the user only needs to Press down the armrest 20 with a little force, and it can be moved down until it is adjusted to a suitable height. After the adjustment is finished, loosen the control handle 42, and the control handle 42 and the locking frame 40 will perform reset movement under the action of their own gravity and the tension of the extension spring 60 until the first live pin 311 is snapped between the corresponding two protruding teeth. , thereby locking the X-frame 30.

The utility model relates to an armrest adjusting device, which can be applied to the cabs of various motor vehicles that are suitable for configuring armrests. In particular, the utility model is suitable for engineering vehicles. In addition, the utility model can also be applied to other products, such as various chairs suitable for installing armrests.

The utility model also provides an engineering vehicle with an armrest adjustment device, including the above-mentioned armrest adjustment device, and the fixed body 10 is installed in the cab of the engineering vehicle. In addition, the fixed body 10 can also be directly Construction vehicle frame. A joystick 80 is installed at the front end of the armrest assembly.

The engineering vehicle is specifically a forklift, and is a stand-on forklift.

Embodiment two

Referring to Fig. 4 and Fig. 5, the difference between it and Embodiment 1 is that the armrest assembly 70 is an integral structure, which drives the locking structure on the armrest assembly 70 to lock or unlock the The first active pin 311 . The locking structure includes two rows of protruding teeth 72 arranged on the armrest assembly 70 along the front-rear direction, and the tips of the protruding teeth 72 face downward. When the first movable pin 311 snaps into the interval between any two adjacent protruding teeth in the same row, the first movable pin 311 is in a locked state; When the convex teeth 41 are spaced apart, the first movable pin 311 is in an unlocked state, and then the X-shaped frame 30 is in an unlocked state. In this state, the height of the armrest assembly 70 can be adjusted. Compared with the first embodiment, the armrest assembly 70 has an integral structure, so that the overall structure of the mechanism is simpler and the cost is lower.

The armrest assembly 70 is provided with a sliding guiding structure of the first movable pin 311 , and the sliding guiding structure is a bar-shaped guiding hole 71 disposed in the armrest assembly along the front-rear direction. Specifically, the protruding teeth 41 of the locking structure are arranged on the upper hole wall of the bar-shaped guide hole 71 . The convex teeth 41 are helical teeth, and the heights of the convex teeth in the same row gradually decrease from the front end to the rear end of the armrest assembly, that is, the convex teeth in the same row are arranged obliquely, and the strip-shaped guide holes 71 is also in an inclined shape with a high front end and a low rear end, both of which have an inclination angle of about 6°, so that the armrest assembly 70 is in a horizontal or substantially horizontal state when it is at the lowest position.

When it is necessary to adjust the height of the armrest assembly 70, first lift the front end of the armrest assembly 70, so that the locking structure unlocks the first movable pin 311, and the first movable pin 311 can slide in the bar-shaped guide hole 71, so that Adjust the armrest assembly 70 up or down. After the adjustment is completed, the front end of the armrest assembly 70 is released, and the armrest assembly 70 resets downward under the action of gravity, so that the first movable pin 311 is snapped between two corresponding protruding teeth of the locking structure.

In other embodiments, one end of the gas spring is connected to the fourth connection part, and the other end is connected to the armrest assembly or the second connection part or the third connection part, or one end of the gas spring is connected to a fixed The other end of the main body is connected to the second connection part or the third connection part.

In other embodiments, the booster mechanism is an air cylinder, the air cylinder is installed on the fixed body, and the piston rod of the air cylinder is movably connected to the second connection part or the third connection part or the armrest assembly.

In other embodiments, the booster mechanism is a spring, one end of which is connected to the fixed body or the fourth connection part, and the other end is connected to the armrest assembly or the second connection part or the third connection part. When the booster mechanism is a spring, and its other end is connected to the third connection part, if one end of the booster mechanism is located at the rear of the fixed body, the booster mechanism will play a tensioning role on the third connection part, thereby When the locking structure unlocks the first connecting part, the third connecting part is slid towards the rear side of the fixed body under the pulling force of the booster mechanism, and the armrest assembly is driven up instead of manpower; if one end of the booster mechanism is located at the front of the fixed body, the The booster mechanism pushes the third connecting part, so that when the locking structure unlocks the first connecting part, the third connecting part is pushed by the booster mechanism to slide toward the rear side of the fixed body, thereby driving the armrest assembly up instead of manpower.

In other embodiments, the locking structure includes one row or more than three rows of protruding teeth juxtaposed in the left-right direction.

In other embodiments, in order to prevent the armrest from being raised due to bumps during driving, a torsion spring can be added between the second connecting part and the armrest, so that the first connecting part will not be easily locked due to road bumps. The structure comes out.

The above-mentioned embodiments are only used to further illustrate a kind of handrail adjustment device of the present invention and the engineering vehicle with the handrail adjustment device, but the present invention is not limited to the embodiments, and all the above-mentioned embodiments are made according to the technical essence of the present invention. Any simple modifications, equivalent changes and modifications all fall within the protection scope of the technical solution of the present utility model.

Claims (13)

1. An armrest adjustment device, comprising a fixed body and an armrest assembly, characterized in that: it also includes: X-shaped frame, its top has a first connection part and a second connection part, its bottom has a third connection part and a fourth connection part, and the first connection part is slidably connected to the armrest assembly back and forth, and the second connection part is hinged In the armrest assembly, the third connecting part is located on the lower side of the first connecting part and is connected to the fixed body in a forward and backward sliding manner, and the fourth connecting part is located on the lower side of the second connecting part and is hinged to the fixed body; The locking structure is used for locking or unlocking the first connecting part, and the locking structure is arranged on the armrest assembly. 2. The armrest adjustment device according to claim 1, characterized in that it further comprises a telescopic booster mechanism, and when the locking structure unlocks the first connecting part, the armrest assembly is pushed by the booster mechanism, or the armrest assembly is pushed by the booster mechanism. The booster mechanism pushes or pulls the third connecting part. 3. The armrest adjustment device according to claim 1 or 2, characterized in that: the locking structure includes a row of protruding teeth arranged on the armrest assembly along the front-rear direction or at least two rows of protruding teeth juxtaposed in the left-right direction, And the tip of each protruding tooth faces downward, when the first connecting part snaps into the interval between any two adjacent protruding teeth in the same row, the first connecting part is in a locked state, and when the first connecting part exits the same row, When there is an interval between any two adjacent convex teeth in the row, the first connecting part is in an unlocked state. 4. The armrest adjustment device according to claim 2, characterized in that: the booster mechanism is a cylinder, the cylinder is installed on the fixed body, and the piston rod of the cylinder is movably connected to the armrest assembly or the second connection part or the third connecting part; or, the booster mechanism is a gas spring or a spring, one end of which is connected to the fixed body or the fourth connecting part, and the other end is connected to the armrest assembly or the second or third connecting part. 5. The armrest adjustment device according to claim 3, characterized in that: the armrest assembly is an integral structure, which drives the locking structure to lock or unlock the first connecting part through rotation; the armrest assembly A sliding guide structure of the first connecting portion is provided. 6. The armrest adjustment device according to claim 3, characterized in that: the armrest assembly includes an armrest and a locking frame rotatably connected to the armrest, the locking frame is provided with the protruding teeth, and drives the armrest through rotation. The locking structure locks or unlocks the first connecting portion; the first connecting portion is slidably connected to the armrest, and the armrest is provided with a sliding guide structure of the first connecting portion, and the second connecting portion is hinged to the armrest; The fixed body is provided with a sliding guide structure of the third connecting portion. 7. The armrest adjustment device according to claim 6, characterized in that: the locking frame is covered on the inner side of the armrest, and the locking frame is connected or formed with a control handle, and the locking frame is driven upward or toward Rotate downwards, and the armrest is correspondingly provided with a relief hole for the control handle to stretch out and move up and down. 8. The armrest adjusting device according to claim 6, characterized in that: a return elastic member is connected between the locking frame and the second connecting portion of the armrest or the X-shaped frame. 9. The armrest adjustment device according to claim 1, wherein the X-shaped frame includes at least two supports, and each support is hinged into an X-shaped structure by a first pole and a second pole respectively; the at least two supports The first poles of the at least two brackets are parallel to each other, the second poles of the at least two brackets are parallel to each other, and the at least two brackets are independent of each other or connected together by the same hinge shaft at their hinge points; the first of the at least two brackets The top ends of the poles are connected together by a first movable pin, which constitutes the first connecting portion, and the bottom ends of the second poles of the at least two brackets are connected together by a second movable pin, The second movable pin constitutes the third connection portion. 10. The handrail adjusting device according to claim 9, characterized in that: the length of the first pole of each bracket above the hinge point is less than the length below the hinge point, and the second pole of each bracket is above the hinge point. The length above the hinge point is greater than the length below the hinge point. 11. The armrest adjusting device according to claim 3, characterized in that: the heights of the protruding teeth in the same row gradually decrease from the front end to the rear end of the armrest assembly. 12. An engineering vehicle with an armrest adjustment device, characterized in that: comprising the armrest adjustment device according to any one of claims 1-11, the fixed body is installed in the cab of the engineering vehicle, or, the The fixed body is the vehicle frame of the engineering vehicle. 13. The engineering vehicle with an armrest adjustment device according to claim 12, wherein a joystick is installed at the front end of the armrest assembly, and/or, the engineering vehicle is a forklift.